137results about How to "Promote labor saving" patented technology

The invention relates to a low-voltage draw-out switch gear, in particular to a propulsion mechanism for a drawer of a low-voltage draw-out switch cabinet, including a precession mechanism and a three-position locking mechanism, wherein, the precession mechanism includes a transmission spiral which is arranged on a bottom board of the drawer by a support and a groove-shaped locating piece which is inosculated with the transmission spiral and pushes the drawer to move forward and backward and is arranged on a layer board of a cabinet body; the positioning with the linear movement of the drawer is carried out by a spiral protrusion of the transmission spiral and a chute of the groove-shaped locating piece, so as to ensure the drawer not to be skewed and generate a mechanical movement dead point when the drawer receives the reverse withdrawal force. The invention adopts the multi-ring effort-saving propulsion principle of the transmission spiral to ensure the effort-saving propulsion of the drawer, creatively utilizes the spiral protrusion of the transmission spiral and the chute of the groove-shaped locating piece to effectively control the balanced movement of the drawer and fully controls the drawer to be balanced absolutely and not be skewed when the drawer receives the reverse withdrawal force, the operation is flexible and easy, and the operating mechanical faults can be eliminated.

The invention discloses an all-dimensional close-range seed implantation robot for the prostate and relates to the field of medical instruments. The robot is composed of a position adjustment mechanism, a cross joint gesture adjustment mechanism, an ultrasonic image navigation module, a seed implantation module and an operation table cart; by controlling a motor, the position and gesture of an ultrasonic probe can be adjusted, feeding and rotation motion around the axis of the ultrasonic probe are achieved, and a series of sequence ultrasonic images are obtained; under guide of the ultrasonicimages, by controlling the seed implantation module, the radioactive seed implantation treatment operation for the prostate cancer is completed. According to the robot, the defects can be overcome that in the traditional seed implantation operation process, due to the fatigued operation of doctors, the positioning precision and stability of manual operation are low, and the treatment process depends on the personal experience of the doctors. The operation efficiency and seed implantation precision are improved.

The invention discloses a tire structure for a wheelchair. A plurality of pattern groups are uniformly distributed at intervals on a tread of a tire in the circumferential direction, each pattern group contains an inverted S-shaped pattern block on the center line of the tread, and each inverted S-shaped pattern block comprises a central axle part and two flank parts, wherein the two correspondingflank parts are at 180 degrees from each other along the center of the tread. The central axle parts are located on the center line of the tread and are in a concave-convex shape with a wide upper end, a narrow middle end and a wide lower end in the circumferential direction of the tire. The two flank parts of the inverted S-shaped pattern blocks are arranged on one sides of the upper and lower ends of the central axle parts in an opposite mode. According to the tire structure for the wheelchair, through the structural design of the inverted S-pattern blocks on the center line of the tread, so that the inverted S-pattern blocks located at the center of the tread has double directionality, the tire can be switched smoothly between forward, backward, rotation and any other movement, the wheelchair is enabled to be labor-saving in pushing, agile and durable, a good catching performance is played, and safety hazards are reduced.

The invention discloses a portable tire-burst protecting emergency device for electric vehicles and motorcycles. Under the emergent situations of air leakage and burst of tires of the electric vehicles and the motorcycles, a faulted tire can be placed on the portable tire-burst protecting emergency device; by the device, the tire can be effectively protected from further damage after tire burst of a vehicle, and the vehicle can be labor-saving to push and can move forwards at a low speed when rear driving wheels are undamaged but front tires burst. Further, the device is provided with an adjusting mechanism, so that the device can be applied to tires with different specifications. When not in use, the device can be shortened to reduce size, and then is placed in a trunk or cavity of the vehicle to be carried with the vehicle. The device is reasonable in design, simple in structure, light in shape, safe and reliable.

The invention discloses a new energy automobile charging pile conveniently storing connecting wires and belongs to the field of charging piles. The new energy automobile charging pile conveniently storing the connecting wires comprises a base. A charging pile body is fixedly connected to the base. A pair of wire storage grooves are formed in the base and internally connected with elastic rotary shafts. The elastic rotary shafts are fixedly connected with take-up reels. Four evenly-distributed first clamping blocks are fixedly connected to one side wall of each take-up reel. First sliding grooves with openings corresponding to the first clamping blocks are formed in the charging pile body. The inner portions of the first sliding grooves are in sliding connection with second clamping blocksmatched with the first clamping blocks. A pair of extension springs are connected between the inner walls of each second clamping block and the corresponding first sliding groove. Electromagnets are fixedly connected to the inner walls of the first sliding grooves. By the adoption of the new energy automobile charging pile, the charging gun connecting wires can be easily stored, and losses or potential safety hazards caused by improper connecting wires storage can be reduced.

The invention discloses a cloth cutting device for clothing manufacture and relates to the technical field of cloth cutting, aiming to solve the problem that conventional bench type cutting devices are not adaptable to mass cutting of cloth. The cloth cutting device comprises a rack and a lower cutting plate; a blade carrier is arranged on the outer wall of the bottom of the rack, and the outer wall of the bottom of the blade carrier is welded to the outer wall of the top of the lower cutting plate; four mount holes are formed on the outer wall of the top of the lower cutting plate, and four rollers are respectively arranged inside the four mount holes; slide slots are respectively formed on the inner walls of two sides of the rack, two first sliders are slidably connected to the inner walls of two sides of the two slide slots respectively, the two first sliders are the same, mounting shafts are welded to outer walls of opposite sides of the two first sliders respectively, and holderssleeve the outer peripheral walls of the mounting shafts respectively; a cutting blade is fastened to the outer wall of the bottom of the holder, a U-shaped connecting frame is welded to the outer walls of backs of the two first sliders, and a second connecting plate is rotationally connected to the outer wall of the back of the U-shaped connecting frame. In application of the cloth cutting device, squeezing and fixing to single-layer or multi-layer cloth are facilitated, and accordingly, the cutting quality of the cutting blade is improved.

The invention relates to a rotary folding type hydraulic channeling machine, which comprises a body and a machine frame, wherein the body comprises a motive power head and a rolling mechanism, wherein the rolling mechanism comprises an oil cylinder body, an oil cylinder cover and an oil cylinder bottom plate, a piston and a piston rod are arranged in the oil cylinder body, the body is arranged on a flat plate assembly, a rotating device is arranged in the flat plate assembly, the flat plate assembly comprises a flat plate, the upper part of the flat plate is connected with a transition plate through a rotating shaft, the body is arranged on the transition plate, the transition plate rotates around the rotating shaft in a swinging way, the rotary folding type hydraulic channeling machine is also provided with a swinging position limiting device, the flat plate and the transition plate are provided with a braking mechanism, the flat plate is arranged on a flat plate frame, the machine frame is connected under the flat plate frame, the flat plate slides on the flat plate frame, the flat plate and the flat plate frame are provided with a locking mechanism, the machine frame is an air spring auxiliary support folding machine frame which comprises two opening hinges arranged under the front end of the flat plate frame, the opening hinges are connected with a short support rod, a position limiting strip is arranged under the tail end of the flat plate frame, a long support rod is surrounded by the position limiting strip and the flat plate frame, the long support rod and the short support rod are connected through a connecting shaft, a position limiting plate is arranged on the long support rod, a position limiting groove is arranged in the position limiting plate, a position limiting pin is fixed on the short support rod, and the position limiting pin is matched with the position limiting groove.

The invention discloses a tire-punctured pushing device for electric vehicles, which comprises a baseplate, wherein a pulley is arranged on the baseplate, and the baseplate is provided with a clamping-fixing device for being clamped at wheels of an electric vehicle. The pushing device disclosed by the invention has the beneficial effects that when a tire of an electric vehicle is punctured, the punctured tire can be placed on the pushing device disclosed by the invention, and in the process of manually pushing the electric vehicle, an operation that the punctured tire is contacted with the ground to slide is not required, thereby effectively protecting the faulted tire and reducing the application cost of the electric vehicle; because the device is provided with the pulley, an effect of labor saving is achieved in the process of pushing; and in addition, the device disclosed by the invention is simple and lightweight in structure, and easy to carry.

The invention discloses a rubber injection gun. The rubber injection gun comprises a support frame and a rubber tube bracket connected at the front end of the support frame, wherein through holes are correspondingly formed at the rear of the rubber tube bracket and the support frame; a push rod penetrates through the through holes; a propelling disc sliding along the rubber tube bracket is fixedly installed on the front of the push rod; the push rod is driven by a driving mechanism connected on the support frame; a guide frame is installed on the support frame; the rear of the guide frame is connected on the support frame via a hinge axis; a rear idler wheel pressing against the top of the push rod is installed on the hinge axis; the front of the guide frame penetrates through the rear end of the rubber tube bracket and is connected with a front idler wheel pressing against the push rod in a rotary manner; the front of the support frame or the rubber tube bracket is connected with a height limiting device for limiting the front height of the guide frame. The rubber injection gun has a simple structure and has the advantages that the rubber injection gun saves effort during pushing and can effectively prevent the push rod from tilting.

Provided is a transporting system. To-be-transported objects between unmanned transport vehicles can be automatically transported, and automation and labor saving in a factory can be further achieved. An unloading device (6) comprises an inclined convey belt (31). The inclined transport belt is arranged above a passage (T1) and inclines in a way that the exit is higher than the entrance, and the height of the entrance is the same as or is smaller than the height of the front end of a tray (3) carried by an unmanned transport vehicle (2). The unloading device also comprises a guide rail (32) which is arranged under and parallel to the inclined convey belt (31). The unmanned transport vehicle (2) further comprises a linkage rod (23) which extends upwards from the unmanned transport vehicle (2) to contact with the back end of the tray (3). When the unmanned transport vehicle (2) enters the passage (T1), the linkage rod contacts with the guide rail (32) and moves upwards, and the contact between the linkage rod and the back end of the tray (3) is kept, so the tray (3) is allowed to move on the inclined convey belt (31) along with the forward moving of the unmanned transport vehicle (2).

The invention discloses a hand-pushing and walk-learning dual-purpose trolley for a baby. The hand-pushing and walk-learning dual-purpose trolley comprises a table face, a seat pocket and pedals. The seat pocket is fixedly installed at the bottom of the table face. A backrest is fixedly connected to the position above the rear side of the seat pocket. A back cushion is arranged on the front side of the backrest. The rear side of the top of the table face is fixedly connected with a hand-pushing rod through a connecting rod. The hand-pushing rod is sleeved with anti-skidding sleeves. Handrails are fixedly installed on the left side and the right side of the top of the table face. Each of the two sides below the table face is fixedly connected with the outer side of the top of the corresponding pedal through two crossed supports. The connecting portion of every two adjacent supports is provided with a hinging piece. The hand-pushing and walk-learning dual-purpose trolley for the baby is simple in structure and convenient to use; the baby can fully learn and practice walking and be pushed forwards in a more labor-saving manner; and the baby can sit in the hand-pushing and walk-learning dual-purpose trolley more comfortably and the situation that the baby drags the legs in the walk-leaning process and consequently the baby is hurt can be avoided.

The invention relates to a wheel carrier for an electric bicycle, which structurally comprises a support plate, as well as front rolling wheels and rear rolling wheels which are arranged at the bottom of the support plate, wherein the front and rear parts of the support plate are articulated with a front baffle and a rear baffle respectively; a front cushion block and a rear cushion block are arranged between the support plate and the front baffle, and between the support plate and the rear baffle respectively; cushioning angles of the front and rear baffles can allow a loaded wheel of the electric bicycle to be just contained in an opening angle bracket formed by the front baffle, the support plate and the rear baffle; and hurdles are arranged in the middles on the two sides of the support plate, and are fixing frames of a bundling belt of the wheel of the electric bicycle. The wheel carrier is convenient to carry with the bicycle, good in fixity, and high in follow-up performance, is not easy to overturn in a moving process, and can meet using requirements of extensive electric bicycle users, and the practicability is improved greatly.

The invention relates to the field of sugarcane processing, in particular to a sugarcane semi-automatic peeling machine. The machine comprises a machine body, a peeling component, an adjusting component, two auxiliary propulsion components and two bearing components, the peeling component comprises two peeling cutters which are vertically symmetrically arranged in the machine body, the two peelingcutters move in opposite directions through two elastic pieces, the adjusting components are arranged in the machine body and used for driving the two elastic pieces to move in opposite directions, the two bearing components are respectively arranged at the left end and the right end inside the machine body, the two auxiliary propulsion components are respectively arranged at the left end and theright end outside the machine body, the left end and the right end outside the machine body are respectively provided with material passing holes, a feeding disc is also arranged outside the left side of the machine body, four round holes are formed in the feeding disc, and a control button is arranged at the periphery of each round hole. The machine has a simple and clear structure, can effectively peel sugarcane, and mainly adopts labor-saving manual operation so as to further save investment and later maintenance cost.

The invention discloses a lock bar member, a lock body, a lock component and a display screen. The lock bar member comprises a first locating sleeve, a lock bar, a handle, a first support rod and a second support rod; the lock bar slidably sleeves in the first locating sleeve; the first support rod is fixed on the first locating sleeve and hinged with one end of the handle; and the second supportrod is respectively hinged with the lock bar and the handle. According to the lock bar member provided by the invention, the first support rod, the handle and the second support rod form a lever structure; the lock lever member utilizes the lever principle to make the force acting on the lock lever greater than the force of a user acting on the handle, so that the user can save effort when pushingthe lock lever, even if the lock bar and a lock seat are slightly misaligned, the user can easily push out the lock bar, so that the operation of the user is more convenient and smoother, and the operating experience of the user is greatly improved.

The invention discloses an automatic lifting type mother and son bed. The automatic lifting type mother and son bed comprises a mother bed and a son bed. A son bed containing cavity is formed in one side of the mother bed. The son bed is arranged in the son bed containing cavity. The son bed comprises a bed board and bed legs. A supporting plate and at least one electric push rod are arranged below the son bed. The bed legs are telescopic rods, and the upper ends and the lower ends of the bed legs are fixedly connected with the bed board and the supporting plate respectively. The lower ends of the electric push rods are fixedly connected with the supporting plate, the upper ends of push rods of the electric push rods are connected with the lower end of the bed board, sliding rails are arranged at the bottom of the supporting plate, sliding grooves matched with the sliding rails are formed in the son bed containing cavity, limiting blocks are arranged at the front ends of the sliding grooves, and limiting plates are arranged at the rear ends of the sliding rails. Automatic lifting of the son bed is achieved through the electric push rods, operation is easy and convenient, meanwhile, the height of the son bed can be adjusted according to requirements, parents can conveniently take care of a baby, when the son bed is not needed, the push rods retract, then the son bed is pushed into a bed body of the mother bed, and therefore space can be saved.

The invention discloses a full-automatic rubber injection gun. The rubber injection gun is characterized in that a cylindrical push rod penetrates through a through hole; a propelling disc sliding along a rubber tube bracket is fixedly installed on the front of the push rod; a fixed handlebar is arranged at the lower part of the rear end of a support frame; a row of plane indentions arranged from front to rear are arranged on the surface of the push rod; a drive gear which is driven by a positive and negative rotation motor and is meshed with the plane indentions on the push rod is connected in the fixed handlebar in a rotary manner; an electric button for controlling rotation of the positive and negative rotation motor is installed on the fixed handlebar; a guide frame is installed on the support frame; the rear of the guide frame is connected on the support frame via a hinge axis; a rear idler wheel pressing against the top of the push rod is installed on the hinge axis; the front of the guide frame penetrates through the rear end of the rubber tube bracket and is connected with a front idler wheel pressing against the push rod in a rotary manner; the front of the support frame or the rubber tube bracket is connected with a height limiting device for limiting the front height of the guide frame. The full-automatic rubber injection gun has a simple structure and has the advantages that the full-automatic rubber injection gun saves effort during pushing and can effectively prevent the push rod from tilting.

The invention discloses a folding bicycle, which comprises a frame body assembly, the frame body assembly is provided with an upper frame, a lower frame, a supporting stress frame and a wheel frame, the upper frame and the lower frame are integrally arranged in a linkage mode and folded synchronously, the supporting stress frame and the wheel frame are connected between the upper frame and the lower frame, and the upper frame and the supporting stress frame are connected in a pivoted mode; the lower frame is rotationally connected with the wheel frame, and the supporting stress frame is horizontally connected with the wheel frame; the lower frame is provided with a switching lifting rod which can be folded and unfolded; the front wheel and the rear wheel are connected to the wheel frame in a staggered mode, and the axes of the wheels and wheel frame supporting points are eccentrically arranged; the eccentric directions of the front and rear wheels are opposite; and a pushing handle is rotationally connected to the wheel frame and can be adjusted in a locking manner at any angle between the horizontal direction and the vertical direction. The invention further discloses a folding method of the folding bicycle. The folding bicycle can be integrally folded, linkage synchronous folding can be achieved, the stress structure of the folding bicycle is reasonable in design, and the folding bicycle is more stable during use.

The invention discloses a balance car-baby carriage connector, an relates to the technical field of baby carriages. The balance car-baby carriage connector comprises two baby carriage clamps and two balance car clamps. A mounting rod is fixedly mounted between the two baby carriage clamps. A first transverse rod and a second transverse rod are rotatably mounted between the two balance car clamps.A u-shaped connecting rod is mounted at the first transverse rod. A cardan joint is welded to the middle of the u-shaped connecting rod. The other end of the cardan joint is welded to the middle of the mounting rod. A balance car can be connected with a baby carriage, the baby carriage can be pushed at the balance car, and therefore the problems that parents are liable to be tired when pushing thebaby carriage to take a baby out, and the walking speed is low. The balance car-baby carriage connector further solves the problems that when the balance cart and the baby carriage are not connectedand the parents stand directly in the balance car and push the baby carriage, it is liable to cause the baby carriage to be liable to fall when not braked and steered in time, and handles of the babycarriage are liable to take off when hand force is excessive.

The invention discloses a trimming device for a plate side edge sealing belt. The trimming device comprises an upper trimming device, the upper trimming device comprises a trimming tool bit, the trimming device further comprises a limiting piece and a connecting plate, the limiting piece and the upper trimming device are arranged on the connecting plate, and the limiting piece and the upper trimming device slide horizontally relative to each other. According to the invention, the limiting piece and the upper trimming device slide relatively and horizontally, therefore, the horizontal distancebetween the limiting piece and the tool bit is adjustable; during trimming, a plate is attached to the limiting piece, so the horizontal distance between the side edge of the plate and the tool bit isadjustable; therefore, the position of the tool bit can be adjusted according to the distance between the redundant edge sealing belt of the plate and the edge of the plate, the edge sealing belt onthe vertical side edge of the plate can be trimmed, the edge sealing belt on the non-vertical side edge of the plate can be trimmed, and the adaptability of equipment is improved.

The invention relates to punching equipment, in particular to hardware product clamping auxiliary punching equipment. According to the hardware product clamping auxiliary punching equipment provided by the invention, the position of a hardware product can be conveniently adjusted, the hardware product is punched, the hardware product is easily clamped and fixed in the transverse direction and the longitudinal direction, the hardware product can be controlled to stop moving instantly, and a drill bit can be conveniently pressed down. The hardware product clamping auxiliary punching equipment comprises supporting legs, a moving mechanism and a punching mechanism, wherein the supporting legs are symmetrically arranged on the two sides of the ground; the moving mechanism is arranged between the upper parts of the supporting legs; and the punching mechanism is arranged on the moving mechanism. According to the hardware product clamping auxiliary punching equipment provided by the invention, by pushing the hardware product to move downwards and pushing an arc-shaped plate to move towards the outer side, a groove frame, a connecting plate and a pressing plate are pushed to move towards the inner side through a groove block, and the pressing plate moves towards the outer side after making contact with the hardware product, so that the effect of conveniently clamping and fixing the hardware product in the transverse direction and the longitudinal direction is achieved, and position deviation of the hardware product is avoided.

The invention discloses an electric tricycle carriage with an auxiliary loading structure. The electric tricycle carriage comprises a carriage body, the outer surface of the front end of the carriagebody is connected with a carriage door through a hinge, the outer surface of the front end of the carriage door is welded with a lock nose, the inner surface of the bottom end of the carriage body iswelded with a bottom plate, the upper surface of the front end of the bottom plate is provided with a second through groove, the inner side of the second through groove is connected with a cover platethrough a rotating shaft, and the inner side of the bottom plate is provided with a storage bin. A loading plate is arranged on the inner side of the storage bin, a first through groove is penetratingly formed in the outer surface of the loading plate, a trapezoidal frame is welded on the upper surface of the rear end of the bottom plate, the top end of the trapezoidal frame is welded and fixed to the inner surface of the compartment body, a sliding seat is arranged at the rear end of the bottom plate, and a first partition door and a second partition door are arranged on the inner side of the sliding seat. The electric tricycle carriage is provided with the auxiliary loading structure, is convenient for labor-saving loading of large packages, is convenient for quickly taking out small packages and improves the taking efficiency.

The invention relates to the technical field of grain cutters, in particular to a hand-push type grain cutter. The grain cutter includes a sliding type machine body, two cutters are arranged at the end of the sliding type machine body, a push rod is connected with the upper portion of the sliding type machine body, four small wheels are rotatably installed at the bottom of the sliding type machine body, the upper portion of the sliding type machine body is provided with a storage tank, the bottom of the storage tank is provided with a movable bottom plate, one side of the movable bottom plate is rotatably installed on the sliding type machine body, the lower portion of the movable bottom plate is provided with an ejector rod, the ejector rod is connected with a connection rod, the connection rod is rotatably installed on the sliding type machine body, and the end of the connection rod extends to the outside of the sliding type machine body and is connected with a pedal. The bottom is provided with the small wheels, the streamline bottom plate is cooperated with the small wheels to make pushing save more labor, the arrangement of the storage tank and the movable bottom plate increases the storage capacity and can be cooperated with the pedal to make unloading easily, and the labor efficiency is thus effectively improved. The grain cutter is simple to manufacture, saves labor, is convenient to use, and is suitable for use in both a paddy field and dry soil.

The invention relates to a carrying system which achieves handing-over automation of carrying goods among unmanned carrying vehicles and further pushes forwards automation and labor-saving development of a factory. A loading and unloading device is provided with a standby conveyor belt (91) arranged above a passage (T3) and loaded with a tray (3), a folded plate (97) protruding towards the passage (T3)and rotating when being in contact with the unmanned carrying vehicles (2)entering the passage (T3), an arm (96)which rotates due to the rotating linkage between the arm and the folded plate (97)and is in contact with the tray (3)loaded on the standby conveyor belt (91) and drawing the tray (3)close to the edge of the standby conveyor belt (91).Additionally, the unmanned carrying vehicles (2)provided with linkage rods (23)which extend above the unmanned carrying vehicles (2)and are in contact with the rear end of the tray (3) on the standby conveyor belt (91).As the unmanned carrying vehicles (2)move forward in the passage (T3), the tray (3) on the standby conveyor belt (91)is pushed onto the unmanned carrying vehicles (2).

The invention discloses a big-data-based rotary cultivator with high soil condition self-adaption capability, and particularly relates to the field of agricultural cultivation equipment.The rotary cultivator comprises driving equipment, a shed frame is fixedly installed on the driving equipment, a lifting mechanism is arranged at the front end of the driving equipment, and a rotary tillage pretreatment mechanism is arranged at the end, away from the driving equipment, of the lifting mechanism; and a rotary tillage ridging mechanism is arranged at the rear end of the driving equipment. The surface of the soil to be subjected to rotary tillage is treated through the rotary tillage pretreatment mechanism, on one hand, damage to a rotary tillage cutter caused by sundries such as stones in the soil rotary tillage process can be prevented, on the other hand, the rotary tillage cutter can be screwed into the soil more easily, and therefore the service life of the rotary tillage cutter is prolonged, and the rotary tillage efficiency is improved while rotary tillage is completed. The ridging wheel can be used for ridging soil after rotary tillage, so that one machine has multiple functions in one way, and the working efficiency is greatly improved.

The invention discloses a nitrogen cylinder convenient to transport and store, and relates to the technical field of nitrogen cylinder equipment. The nitrogen cylinder convenient to transport and store comprises a nitrogen cylinder body, wherein a reinforcing shell fixedly sleeves the lower end of the circumferential side face of the nitrogen cylinder body, a supporting column is fixedly connected to the center of the lower surface of the reinforcing shell, and a base is fixedly connected to the lower surface of the supporting column; base through grooves I are formed in the front side face and the rear side face of the base, and base through grooves II are formed in the left side face and the right side face of the base; sliding grooves I are formed in the left side face and the right side face of the reinforcing shell, sliding grooves II are formed in the front side faces and the rear side faces of the inner walls of the sliding grooves I, clamping grooves I are formed in the upper ends of the inner walls of the sliding grooves I, and clamping grooves II are formed in the lower ends of the inner walls of the sliding grooves I; and hollow sliding blocks are slidably connected to the inner walls of the sliding grooves I, and hinges are fixedly connected to the left side faces of the hollow sliding blocks. The problem that nitrogen cylinders fall down and are damaged due to the fact that the nitrogen cylinders are prone to roll and turn on one side in a compartment during transportation due to the fact that most of existing nitrogen cylinders are cylindrical and cannot be stably placed is solved.

The invention relates to a multi-shift stretcher for interiors of ships. The multi-shift stretcher comprises a tray, a framework housing, triangular wheel devices, hinge folding structures, guide wheel devices and connecting rod folding structures, wherein each triangular wheel device is connected with the corresponding hinge folding structure; one side of each hinge folding structure is fixed on a bulge; each guide wheel device is connected with the corresponding connecting rod folding structure. The multi-shift stretcher has the following advantages: the wounded are prevented from secondary injuries, flexible turning and transporting of the multi-shift stretcher in narrow channels are facilitated, and the multi-shift stretcher can be conveniently taken upstairs and downstairs, is convenient to operate, and low in time consumption, labor consumption and maintenance cost, can be flexibly transported in narrow ship channels, realizes body positioning when being used for carrying the wounded, effectively reduces secondary injuries and only requires one person to finish carrying and rescuing of the wounded in the internal channels of the ships during practical operation.

The invention relates to the technical field of engineering machinery, in particular to a derusting device for engineering mechanical equipment based on a spraying mechanism. The device comprises a supporting device and a spraying mechanism arranged at the top of the supporting device; the spraying mechanism comprises a spraying box, the spraying box is a hollow shell, and a pressure plate is arranged in the spraying box; the side wall of the pressure plate is tightly attached to the inner wall of the spraying box; guide columns are arranged at the four corners of the pressure plate, and springs are arranged around the tops of the guide columns; and a liquid inlet hole is formed in the bottom of the left side wall of the spraying box. According to the derusting device for the engineering mechanical equipment based on the spraying mechanism provided by the invention, the pressure plate extrudes a rust remover through elastic force generated by deformation of the arranged springs, and the pressure intensity of the rust remover sprayed out through a main spraying pipe is increased under the dual action of the gravity of the rust remover in the spraying box and the extrusion force of the pressure plate, so that the spraying range of the sprayed rust remover is larger, and therefore, the contact area between the rust remover and the engineering mechanical equipment is increased.

The invention relates to a battery replacing system. The battery replacing system comprises a trolley, a storage battery and a battery bin. The trolley is composed of a trolley body, a lifting mechanism and a lifting platform. The lifting mechanism is arranged in the trolley body. The lifting platform is mounted on the lifting mechanism. The lifting platform is located above the trolley body. An up-down lifting structure is formed on the trolley body through the lifting mechanism. The storage battery comprises a battery body and a power male connector. The battery body is a cuboid. The power male connector is arranged on the outer side of the battery body. The battery bin is an open inner cavity mounted on electric equipment. The battery bin corresponds to the storage battery in shape andsize. The inner wall of the battery bin is provided with a power female connector corresponding to the power male connector on the storage battery. During application, the battery replacing system hasthe advantages that the battery is easy and convenient to replace, operation is easy, time and labor are saved, and thus, the battery replacing system is more beneficial to application and popularization of large-scale electric equipment such as electric cars and electric airplanes.

The invention provides a novel water-supply vehicle including a vehicle body; at least three vehicle wheels are disposed on the bottom of the vehicle body. The interior of the vehicle body is providedwith a cavity; a rotating shaft is connected between the two side walls of the vehicle body, a rotating drum is arranged on the rotating shaft, and a rotating gear is arranged on one side of the rotating drum; a rotating rod is arranged on the outer surface of one end, corresponding to the rotating gear, of the vehicle body; a gear is arranged at the end of the rotating rod, and the gear is in transmission fit with a rotating vehicle wheel. The vehicle body is also provided with a pushing handle, and an inlet pipe through-hole is formed in one end, provided with the pushing handle, of the vehicle body; a water outlet hole is also formed in the outer surface of the vehicle body; a hose is winded around the rotating drum; the water inlet end of the hose extends into the outside of the inletpipe through-hole and the water outlet end of the hose communicates with the water outlet hole; and a valve is arranged on the water outlet hole. A water pipe is set in a pushable vehicle body, so that the novel water-supply vehicle is easy to push, capable of saving labor, easy to organize and maintain, very convenient, very practical and the novel water-supply vehicle has a wide range of application.