52results about How to "Avoid Crushing Injuries" patented technology

The invention discloses a seat belt retractor. The seat belt retractor comprises a self-locking device and a winding shaft; the winding shaft comprises a winding drum body, a force-limiting mandrel and a shaft end piece, wherein the winding drum body is used for winding a fabric tape, the force-limiting mandrel is arranged in an internal cavity of the winding drum body, and the shaft end piece is fixedly connected with the self-locking device; the force-limiting mandrel comprises a rotary part, a mandrel body and a locking part; the shaft end piece is in rotation-stopping connection with the locking part; one end of the winding drum body is in rotation-stopping connection with the rotary part; both the other end of the winding drum body and the shaft end piece are provided with pin holes and are in pin connection through a driving pin; the shaft end piece is fixedly or integrally connected with the self-locking device; and the mandrel body is a shaft piece, wherein two ends of the mandrel body can be relatively twisted so as to form angles of twist. The retractor is provided with the mandrel body which can be twisted and have a force-limiting function, so that after a seat belt is locked, a small section of fabric tape can be further released to exert a buffering function, avoid holding the body of a passenger too firmly, prevent the chest and abdomen of the passenger from being injured by extruding, and reduce and alleviate the injury to the neck of the passenger.

The invention discloses a cantilever-type lifting medical stretcher which comprises a bed stand, a lifting frame and a lead screw feeding mechanism. Casters are arranged at four bottom corners of the bed stand, a support frame is arranged on one side of the bed stand, a cantilever connected with the lifting frame is arranged on the upper portion of the support frame, a sleeve connected with the lifting frame is arranged in the middle of the support frame, the lifting frame is provided with a power mechanism, the lead screw feeding mechanism is positioned in the front of the lifting frame, and the front end of the lead screw feeding mechanism is connected with a bed board. The lifting frame together with the sleeve can vertically move along the supporting frame and is applicable to sickbeds with different heights, and the lead screw feeding mechanism can effectively advance and draw back the bed board. By the aid of the cantilever-type lifting medical stretcher, a patient can be effectively shifted to another bed and transferred, the pain of the patient is relieved, and the working pressure of medical workers is relieved. The cantilever-type lifting medical stretcher is unique in creation, convenient to use and easy to popularize.

The invention relates to the field of medical devices, and in particular to an abdominal wall supporting device for a gasless laparoscopic surgery. The device comprises a rod-shaped body that cooperates with a cavity mirror puncture, wherein the rod-shaped body is provided with a through hole that cooperates with a laparoscope, the rod-shaped body is provided with at least one supporting mechanism, and the supporting mechanism comprises a telescopic tube and a slider which are detachably connected to each other, the slider is made of silicone material, and the telescopic tube is detachably connected with a gas supply device, the gas supply device controls the amount of gas in the telescopic tube, changes the distance between the slider and the rod-shaped body, and the telescopic tube is ina contracted state when the rod-shaped body is placed in the abdominal cavity in order to prevent the supporting mechanism from causing damage to the cavity mirror puncture, during the extension of the telescopic tube, the slider made of silicone material does not cause damage to the organ, at the same time, the gas supply device is used to control the moving speed of the slider, so as to avoid the crushing injury caused by the slider moving too fast, the abdominal wall and the internal organs can separate safely to form a surgical space for laparoscopic surgery in the abdominal cavity.

The invention discloses a tea equalizing device, which comprises a vibrating feeding device, a feeding baffle, a soft brush roller, a first-level equalizing baffle, and a second-level equalizing baffle. The vibration motor is fixedly installed at the bottom of a trough. And the end of the trough is provided with a blanking baffle, the soft brush roller is fixedly connected to one end of the top of the conveyor belt, one side of the soft brush roller is successively provided with a first-level equalization baffle and a second-level equalization baffle, Moreover, both the first-level equalizing baffle and the second-level equalizing baffle are connected to the upper end of the conveyor belt, and the discharge plate is connected to the end of the conveyor belt. The tea spreading device is equipped with a vibrating feeding device, and the tea leaves evenly slide onto the conveyor belt under the action of the vibrating motor and the feeding baffle, and is connected with a soft brush roller, which can evenly bring the tea to the soft side and avoid The tea leaves are damaged by rolling, and there are two sets of equal baffles connected to further adjust the thickness and uniformity of the tea leaves, so that the thickness of the tea leaves remains consistent.

The invention discloses a safety airbag of an automobile. The safety airbag can implement a buffer protection function on passengers and an automobile body. An outer airbag is connected with a gas charging valve and one end of a safety valve, the other end of the safety valve is connected with one end of a gas pipe, and the other end of the gas pipe is connected with an inner airbag. When collision occurs, the outer airbag which is charged with gas through the gas charging valve is subjected to external force, the gas inside the outer airbag is squeezed, the outer airbag deforms, and part of collision energy is absorbed. Simultaneously, the squeezed gas passes through the safety valve, when the gas pressure is high enough, the safety valve is switched on, the gas is delivered to the inner airbag through the gas pipe, the inner airbag is inflated, and the inflated inner airbag is used for preventing passengers from directly colliding with automobile parts and stopping the movement inertia of passengers.

A secondary light curtain for preventing injury to an operator of a press brake during formation of a second flange on a workpiece and a method for using the same. The secondary light curtain detects intrusion by the operator into a crush zone, i.e. the area, between the ram and the leading edge of a prior formed flange. In order to provide for ready adjustment of the height of the secondary light curtain, a mounting bracket having a longitudinal mounting slot, and a cooperating secondary angle bracket are provided. The mounting bracket of the present invention allows the secondary light curtain light assemblies to be mounted directly on the front or side of the ram.

The invention discloses a polishing device for a side surface of mobile phone glass. The polishing device comprises a grinding head, a rotating shaft, a rotary disc, an epicyclic gear and a loading box, wherein the rotating shaft is mounted in the central position of the rotary disc; sawtooth structures which mesh with the epicyclic gear are arranged on the inner edge of the rotary disc and the outer side of the rotating shaft; the loading box is arranged on the epicyclic gear; three side surfaces and the bottom surface of the loading box are fixed connection structures; the other side surface of the loading box is a movable fixing panel; tooth grooves with uniform intervals are formed in the bottom of the loading box; rubber spacers are arranged at the tops of the tooth grooves; grilles are arranged in the tooth grooves; glass placing grooves are formed between the grilles; and vertical rubber cushion blocks having the same width with the glass placing grooves are arranged at the two ends of the glass placing grooves. On the whole, the polishing device has the advantages that the production efficiency is high, the fixation is firm, and the polishing effect is good, and the phenomenon that the mobile phone glass is broken and scratched during the polishing process can be avoided.

The invention relates to the technical field of photovoltaic module processing, and discloses a framing machine for assembling a photovoltaic cell panel. The framing machine comprises a base, the twosides of the upper end of the base are both fixedly connected with first sliding rails, and one end of each of the two first sliding rails is fixedly provided with a first pneumatic cylinder. Througharrangement of an auxiliary table and a mounting ring, when the fixed photovoltaic panel is framed, a worker can rotate the fixed photovoltaic panel to make the photovoltaic panel matched with a to-be-framed assembly; since the pressing plate and the supporting plate can rotate freely, the photovoltaic panel can drive the pressing plate and the supporting plate to rotate synchronously, the photovoltaic panel is prevented from being scratched, cooperation of all to-be-framed assemblies is facilitated, and the framing effect is improved; after framing is completed, the pressing plate can automatically return to the initial position under the action of the bent spring, and the next framing work is facilitated; and the supporting plate can return to the original position under cooperation of the circular ring and the reset spring and can be matched with the pressing plate all the time.

The invention provides a walking type pineapple harvester, and belongs to the field of pineapple planting machines. The walking type pineapple harvester comprises a frame, wheels, an engine, a cutterhead, a cutterhead shaft, a transmission mechanism and a rotating mechanism. A collecting and conveying device and a pineapple temporary storage bin are omitted, and therefore the overall structure ofthe harvester is small and simple. Harvesting work is convenient through the position arrangement of a frame grip, and it is not needed to worry about damage of walking to fruits and plants. Forward power of the harvester depends on manual pushing, other power is supplied by the engine, forwarding and steering of the harvester are simple and controllable, and the harvester can adapt to complex terrain environments. Slipping of pineapples during cutting can be avoided through tooth-form cutter teeth of the cutterhead, and the cutting efficiency is improved. By means of the special structure that the tooth-form surface of the cutterhead is arranged into a horizontal surface, the other surface of the cutterhead is arranged into an inclined surface, on one hand, the cutting efficiency is improved, on the other hand, abrasion of the cutterhead is relieved, and polishing of secondary use of the cutterhead is also promoted.

The invention relates to a servo motor stator assembly shaping tool which comprises a gland (1), an upper pressuring column (2) and a fixing lantern ring (3), wherein the outer side of the lower end of the gland (1) is a conical surface, the upper end of the gland (1) is connected with the upper pressuring column (2), the fixing lantern ring (3) is arranged under the gland (1), a fixing ring (4) is fixedly connected to the lower end of the fixing lantern ring (3), and the internal diameter of the fixing ring (4) is smaller than the internal diameter of the fixing lantern ring (3). The servo motor stator assembly shaping tool is simple in operation and safe to use, meanwhile avoids extrusion caused by a traditional integrated shaping tool on a stator core, saves time and labor, and greatly improves production efficiency.

The invention discloses a protection device during rapid drop of an elevator. The protection device during rapid drop of the elevator comprises the elevator, wherein an elevator car is arranged in theelevator; a ventilation and illumination device is arranged above the elevator car; top protection devices are arranged at the upper sides of the left wall and the right wall of the elevator car; each top protection device comprises first storage cavities which are symmetrically arranged in the upper sides of the left wall and the right wall of the elevator car in a communication manner; a light-transmitting top support plate is rotationally arranged between the front wall and the rear wall of each first storage cavity; and a buffer device is arranged at the lower side of the elevator car, and provides buffer when squatting trapped persons drop and fall to the ground to reduce the damage of impact. The protection device during rapid drop of the elevator can be used as the last protectiondevice in the case of a fault of the elevator; the trapped persons are prevented from being excessively panic due to illumination, ventilation and warning communication, and wait for rescue; if otherprotection devices are failed, the great injury caused to human bodies by an impact force during drop can be reduced, and meanwhile, the elevator is prevented from being deformed to cause extrusion injury to internal personnel, and injury due to the crashing of upper dropping objects is avoided.

The invention provides a multifunctional upper limb traction apparatus, aiming at solving the problems of an existing fitness apparatus which is simple in function and fails to effectively develop actual effects of fitness. The multifunctional upper limb traction apparatus is characterized by comprising a main pipe support, a top cap, a transverse bracket, hanging chains, hand pull rings, a back massager, buffer springs, a height adjusting device, a turn plate pre-embedded base, a pre-embedded transverse rod, a rotary bearing, a height adjusting rod, a supporting turn plate, a turn plate bracket and a guiding and localizing boss, wherein the top cap is fastened at the top of the main pipe support in a fastener form; the guiding and localizing boss is arranged on a columnar surface of the main pipe support; and the height adjusting rod is arranged on a side columnar surface at the bottom of the main pipe support. The service life of the fitness apparatus (the multifunctional upper limb traction apparatus) is prolonged by arranging the main pipe support, the back massager and the height adjusting device; a massaging function is added; and meanwhile, the transverse bracket of the traction apparatus can be adjusted in accordance with body heights of people so as to adapt to body builders different in body height.

The invention relates to a servo motor stator assembly shaping tool which comprises a gland (1), an upper pressuring column (2) and a fixing lantern ring (3), wherein the outer side of the lower end of the gland (1) is a conical surface, the upper end of the gland (1) is connected with the upper pressuring column (2), the fixing lantern ring (3) is arranged under the gland (1), a fixing ring (4) is fixedly connected to the lower end of the fixing lantern ring (3), and the internal diameter of the fixing ring (4) is smaller than the internal diameter of the fixing lantern ring (3). The servo motor stator assembly shaping tool is simple in operation and safe to use, meanwhile avoids extrusion caused by a traditional integrated shaping tool on a stator core, saves time and labor, and greatly improves production efficiency.

The invention provides an impact buffer device for an automobile seat. The impact buffer device comprises a plurality of fixed plates, a plurality of movable plates, an elastic piece and a trigger device. The movable plates are located on the upper surfaces of the fixed plates and can horizontally move along the upper surfaces of the fixed plates. When the movable plates move horizontally relative to the fixed plates, the elastic piece can accumulate or release elastic potential energy. After the elastic piece accumulates elastic potential energy, the trigger device is started so that the elastic potential energy can be released, and the elastic potential energy can drive the movable plate to move relative to the fixed plate. The trigger device is connected with an automobile safety belt. The trigger device can be triggered by stretching the automobile safety belt. When an impact occurs on an automobile, the buffer device drives the automobile seat to move backwards rapidly, the chests and legs of passengers are prevented from being injured, and therefore safety of the passengers in the automobile is protected; meanwhile, the installation size of the buffer device can be adjusted so that the buffer device can be applicable to automobile seats of different sizes.

The invention discloses a hair transplantation method and a hair transplantation system without damaging hair follicles, the hair transplantation method comprises hair follicle selection, hair lifting, hair follicle cutting, hair follicle needle installation and hair follicle planting, and the hair transplantation system comprises a hair follicle obtaining device and a hair follicle planting device. Hair on the hair follicle to be taken is lifted to cut protruding skin instead of inserting to obtain the hair follicle, the hair follicle is dragged into the hair follicle protection cylinder under continuous traction of the hair puller, the inner cylinder is used for protection, the middle cylinder is used for cutting, and the outer protection cover is used for fixing the skin so that sharp damage to the hair follicle is avoided, the hair follicles are sequentially loaded into the hair follicle cylinder during planting, the hair follicles are prevented from being damaged by trimming and needle points, the filling and displacement processes of the hair follicles are completed in the sleeve, friction between the hair follicles and recipient area tissue is avoided, contusion and extrusion injuries of the hair follicles are reduced, the needle core withdraws from the needle tube when abutting against the hair follicles and cannot bring out the hair follicles, and thus hair follicle damage is minimized, and the planting survival rate is greatly improved.

The invention discloses a collision safety chair device with a collision threshold induction function and an operating method of the device. The device is composed of an elastic bi-stability structural component, a gear set, a horizontal H-shaped gear block, a connecting gear block, a connecting rod, a guide rail and a limiting device, wherein both ends of the elastic bi-stability structural component are connected with an automotive chassis, the middle point of the elastic bi-stability structural component is connected with the horizontal H-shaped gear block through the connecting rod, the horizontal H-shaped gear block forms a movement mechanism with single freedom through the gear set and the connecting gear block, and the chair can move along a bi-stability skipping direction through the mechanism. The operating method of the device is that the injury caused due to collision acceleration can be effectively relieved through the device under the counter-acting force of the elastic bi-stability structural component when the automobile generates collision. The collision safety chair device is a pure mechanical structure, fast in response, high in reliability, and strong in anti-jamming capability, and the injury of personnel in the front row in the automobile can be effectively avoided when the automobile generates direct impact or offset impact, thus the collision safety chair device is suitable for many types of automobiles.

The invention discloses an anti-pinch ticket evader injection access control card swiping device with a stretching and contracting function. The anti-pinch ticket evader injection access control cardswiping device structurally comprises a device body, a display screen, a cover plate, a card swiping area and a stretching and contracting clamping plate mechanism. The anti-pinch ticket evader injection access control card swiping device has the beneficial effects that an arranged clamping preventing structure is used so that when the leg of a ticket evading gate passing person is pinched, an anti-pinch plate receives the extruding force of the leg of the gate passing person so as to move inwards, a certain retreating time is provided for the gate passing person, the phenomenon that the leg of the gate passing person is subjected to mechanical stretching and contracting of the equipment and is seriously extruded and injured is avoided, and the personnel safety of the gate passing pinchedperson is improved; and due to the cooperation of a self air blowing structure and a tight pinch preventing structure, when the ticket evading gate passing person is pinched to retreat backwards and then directly moves forwards at the same time, under the repulsive effect between a soft magnetic piece and a magnetic plate embedded in the inner wall of the air bag, the air bag is in a shriveled shape, airflow in the air bag can be output outwards, strong airflow injection is generated on the leg of the ticket evading forward moving person, and the person can be prevented from evading the ticketand passing the gate.

The invention discloses a laminated slab transportation protection structure in the technical field of laminated slab transportation protection, the laminated slab transportation protection structure comprises a fixed seat, a hinge block and a laminated slab, a left adjusting cylinder and a right adjusting cylinder are fixedly mounted on the left side and the right side of the top of the fixed seat respectively, and a left supporting column is hermetically sleeved with the left adjusting cylinder; a right supporting column is sleeved with the right adjusting cylinder in a sealed mode, a communicating column is fixedly installed between the left adjusting cylinder and the right adjusting cylinder, and a flow slowing mechanism is arranged in the communicating column. According to the device, extrusion damage generated in the relative movement process of the laminated plate and the supporting plate is avoided, and meanwhile, the guide columns are arranged to drive the clamping blocks and the guide columns to move relative to each other in the inertial movement process of the laminated plate; and then the guide columns are in limiting contact with the inner walls of the guide holes, so that buffering is provided for the laminated plate, the situation that the movement degree of the laminated plate is too large, and the limiting pressure is too large is avoided, damage to the laminated plate is reduced, and the protection effect of the laminated plate is multiplied.

The invention provides a bumper bracket and a bumper assembly with it, which relates to the technical field of bumpers and solves the problem that the existing heavy truck bumpers usually adopt hydraulic energy absorption and The honeycomb energy-absorbing structure, when a collision occurs, the joint area is relatively large, and it is easy to affect a large area, forcing the vehicle to be seriously damaged, and the energy-absorbing body is mostly set in the middle position, and it is difficult to cover the corner position, which is easy to cause The bumper is directly impacted, including the energy-absorbing shell; the left and right ends of the energy-absorbing shell are respectively fixed with vertical corner guards by bolts; the rear end of the corner guard and the horizontal insurance One end corresponding to the main body of the bar support is fixedly connected by bolts. In the present invention, because the lower end of the corner protector is fixedly equipped with a strong magnetic block whose lower end is inclined forward and downward, the tires are avoided from being damaged, and the driving safety is improved. Moreover, in order to avoid secondary falling off after adsorption, the supporting tray can play the role of receiving.

The invention relates to the technical field of physical therapy medical equipment, and particularly relates to an upper and lower limb rehabilitation physical therapy device which comprises a physical therapy support, wherein the physical therapy support is composed of an upper support, a cross beam and side plates, the upper support is vertically welded to the upper end of the physical therapy support, the four parallel side plates are vertically arranged at the lower end of the physical therapy support, the upper ends of the side plates are fixedly welded to the lower end face of the physical therapy support, and a gap between a pair of parallel adjacent side plates is arranged to be a rotating inner cavity. The physical therapy device has the beneficial effects that linkage of movement of the upper limb and the lower limb is achieved by arranging a pull rope, bending and rising of the lower limbs are achieved by pulling the pull rope through the upper limbs, the linkage balance of the movement of the upper and lower limbs is realized, the rehabilitation effect on the upper and lower limbs is greatly improved, the vertical resetting of the human body is realized under the action of a buffer spring and the gravity of the human body, the requirement on the force application on the human body is greatly reduced, and the device is suitable for the rehabilitation of surgical hands with inconvenience in force application.

A medical multifunctional hand guard comprises a trapezoidal groove, a movable outer cloth sleeve and two wrist restraint straps, wherein a through hole is formed in the bottom of the trapezoidal groove, the movable outer cloth sleeve sleeves the trapezoidal groove, and the wrist restraint straps are arranged on two sides in the trapezoidal groove. The medical multifunctional hand guard is reasonable in structure and convenient to operate; the pain of a patient can be reduced, and the patient is safer; furthermore, the working difficulty of medical workers who nurse severe case patients is reduced effectively and the nursing work load is reduced.

The present invention belongs to the field of fresh-keeping of fruits and vegetables and relates to a device for surrounding type dielectric barrier discharge (DBD) low-temperature plasmas. The devicecomprises a container cover, a container body, positive electrodes, negative electrodes, discharge media, a net partition plate, a transformer and a pulse power supply, wherein the positive electrodes and negative electrodes are arranged at intervals around an inside of the container body; discharge regions are formed between the adjacent positive electrodes and negative electrodes; the positiveelectrodes and the negative electrodes are connected with the transformer and the pulse power supply; the discharge media cover left and right side surfaces of the positive electrodes; insulating sealing caps are arranged at upper and lower ends of the discharge media; the container cover is positioned above the container body and can be separated from the container body; air inlets are uniformlyformed in a periphery of the container cover; and the net partition plate is used for preventing the fruits and vegetables from contacting with the positive electrodes, the negative electrodes and thedischarge regions and guaranteeing stability of discharge and safety of the device. The device for the surrounding type DBD low-temperature plasmas is small in occupied space, wide in processing areaand uniform in processing effect. The present invention further provides a fresh-keeping storage and transportation vehicle and a fresh-keeping method for the surrounding type DBD low-temperature plasmas.

The invention discloses a cantilever-type lifting medical stretcher which comprises a bed stand, a lifting frame and a lead screw feeding mechanism. Casters are arranged at four bottom corners of the bed stand, a support frame is arranged on one side of the bed stand, a cantilever connected with the lifting frame is arranged on the upper portion of the support frame, a sleeve connected with the lifting frame is arranged in the middle of the support frame, the lifting frame is provided with a power mechanism, the lead screw feeding mechanism is positioned in the front of the lifting frame, and the front end of the lead screw feeding mechanism is connected with a bed board. The lifting frame together with the sleeve can vertically move along the supporting frame and is applicable to sickbeds with different heights, and the lead screw feeding mechanism can effectively advance and draw back the bed board. By the aid of the cantilever-type lifting medical stretcher, a patient can be effectively shifted to another bed and transferred, the pain of the patient is relieved, and the working pressure of medical workers is relieved. The cantilever-type lifting medical stretcher is unique in creation, convenient to use and easy to popularize.

The invention discloses a rivet feeding mechanism for an automatic drilling and riveting system and a preparation process. The mechanism comprises a mounting plate, a rivet storage box, a conversion box, a rivet conveying barrel, a first ejection assembly and a second ejection assembly, the rivet storage box is arranged on the mounting plate, a vibration plate is arranged in the rivet storage box, and a conversion disc is arranged in the conversion box. A rivet clamping groove is formed in the conversion disc, an intermittent motor for providing power for the conversion disc is arranged on the mounting plate, the rivet conveying barrel is arranged at the lower end of the mounting plate, a connecting elbow is arranged at the lower end of the rivet conveying barrel, and the first ejection assembly is used for ejecting rivets in a first conveying groove into the rivet clamping groove. The second ejection assembly is used for ejecting the rivets in the rivet clamping groove into a second conveying groove. The rivet feeding mechanism is reasonable in design, capable of achieving the automatic and continuous rivet feeding effect and suitable for large-scale popularization.

The invention provides a gynecological cleaning device, and relates to the field of medical instruments. The gynecological cleaning device comprises an expansion structure, a cleaning structure and a control unit, the expansion structure comprises an arc-shaped head body and an expansion body, the arc-shaped head body is connected with the cleaning structure, the expansion body is arranged between the cleaning structure and the arc-shaped head body, an expansion cavity is formed in the expansion body, and a pressurization opening and a pressure relief opening are formed in the expansion body; the pressurization opening and the pressure relief opening are both communicated with the expansion cavity, the pressurization opening is connected with a first pressurization pipeline, the pressure relief opening is connected with a pressure relief pipeline, first control valves are arranged on the pressure relief pipeline and the first pressurization pipeline, and the first control valves are connected to the control unit. According to the gynecological cleaning device, the stretching size can be effectively adjusted according to the vagina size in the gynecological cleaning process, cleaning liquid can be prevented from entering the uterus, and the situations that extrusion injury is caused to the vagina during flushing, uncomfortable symptoms are brought to a patient, and secondary injury is easily caused to a user can be effectively prevented.

The invention discloses a 3D glass forming die structure and belongs to the field of dies. The 3D glass forming die structure comprises a male die and a female die which are vertically arranged, wherein 3D glass is sandwiched between the male die and the female die; two grooves which are parallel to the side edge of the 3D glass and positioned on two sides of the 3D glass are formed in the male die; clamping angles corresponding to the two grooves are formed in the female die; limiting steps which are 0.03-0.05mm away from the highest point on a left / right side face of the 3D glass in the vertical direction are formed inside the grooves. The 3D glass forming die structure disclosed by the invention has the beneficial effects that the limiting steps are formed inside the grooves, so that the limiting steps can achieve effects of limiting two side edges of the glass so as to prevent the glass from swinging from side to side; however, since the glass is expanded while heated, the distancebetween the step plane and the highest point on a left / right side face of the 3D glass in the vertical direction is 0.03-0.05mm, imprint or debris appearing on the glass edges can be avoided.

Provided is a self-rescue device of a self-propelled agricultural vehicle. The self-rescue device includes an upper leg mechanism and a lower leg mechanism; the upper leg mechanism is connected with awheel hub of a slipping wheel of the self-propelled agricultural vehicle; one end of the lower leg mechanism is hinged to the upper leg mechanism, the other end of the lower leg mechanism is providedwith a self-rescue boot, and the lower leg mechanism swings freely along a hinge joint to make the bottom surface of the self-rescue boot parallel to the ground consistently; when the upper leg mechanism and the lower leg mechanism are positioned on the same line, the sum of the lengths of the upper leg mechanism and the lower leg mechanism is larger than the wheel radius of the self-propelled agricultural vehicle; when the self-propelled agricultural vehicle is driven forwards, the upper leg mechanism rotates together with the slipping wheel to drive the lower leg mechanism to move until theself-rescue boot of the lower leg mechanism is in contact with the ground and supports the slipping wheel off the ground to move forwards to achieve self-rescue.

The invention belongs to the field of automatic door and window manufacturing, and particularly relates to a revolving door structure with slidable display boxes. The revolving door structure with theslidable display boxes comprises inner crossbeams and two display boxes symmetrically distributed at two ends of the inner crossbeams. The revolving door structure with the slidable display boxes ischaracterized in that the display boxes can slide along the inner crossbeams. According to the revolving door structure with the slidable display boxes, human bodies can be prevented from being injured by extrusion, and the safety of a revolving door is improved.