167results about How to "Limit rotation angle" patented technology

The invention discloses a mounting structure of a disc hob, which comprises a hob shaft support frame, hob shaft bases and a fixed cover plate. Two shaft ends of a hob center shaft are both processed by flat milling to form a flat shaft head with an inclined surface. The hob shaft support frame is a rectangular frame, the inner sides of the two opposite side upright plates of the hob shaft support frame are respectively fixedly provided with one hob shaft base in a connecting manner, an open groove is arranged on the inner side surface of each hob shaft base from bottom to top, a pressure spring, a limit slider and a trapezoid shaft base groove are arranged in the open groove from top to bottom, the bottom of the limit slider is an arc surface with a concave bottom, and a shaft base hole is formed between the arc surface with a concave top and the trapezoid shaft base groove. The side below the open groove is provided with an inclined surface, and an inclined channel is formed from the inclined surface to the opening. The flat shaft head of the disc hob center shaft is matched with the shaft base hole. According to the invention, the disc hob can be conveniently and quickly mounted, and space is widened for the further application of an automation technology. The invention has good application prospects.

The invention discloses a rotation limiting device. The rotation limiting device is used for limiting a rotational angle of a rotary shaft which is driven by a motor to rotate around an axis. The rotation limiting device comprises a first shifting plate, a second shifting plate, a first tact switch and a fixed portion; the fixed portion is fixedly arranged on the motor and does not rotate along with the rotary shaft; the first shifting plate can synchronously rotate along with the rotary shaft and is provided with a first rotating portion and a first protruded portion, the first rotating portion is clamped on the rotary shaft, and the first protruded portion extends from the first rotating portion; the second shifting plate can be driven by the first protruded portion to rotate around the rotary shaft and is provided with a second rotating portion, a shifting portion and a second protruded portion, the second rotating portion encircles the rotary shaft, the shifting portion extends from the second rotating portion and can be driven by the first protruded portion, and the second protruded portion extends from the second rotating portion and can press the first tact switch; and the first tact switch is arranged on the fixed portion and controls interruption of power supply for the motor when the first tact switch is pressed by the second protruded portion, so that the rotary shaft stops rotating. The rotation limiting device has the advantage that the rotation limiting device is provided with the tact switch, so that the rotational angle of the rotary shaft can be safely controlled.

The invention discloses a full-automatic double-ccd (charge-coupled device) photosensitive element digital microscope, which is used for acquiring specimen image information by synchronously using a colored ccd photosensitive element and a black-and-white ccd photosensitive element so as to obtain a multifocal plane holographic three-dimensional image, synchronously outputting a specimen reading result according to nucleus integral optical density acquired by the black-and-white ccd photosensitive element, and finally outputting a specimen picture and text report. Additionally, the full-automatic double-ccd photosensitive element digital microscope comprises a slide uploading and unloading device and a horizontal migration clamping device for automatically changing the specimen slide, and then, the slide is located in three dimensions through a three-dimensional frame, so that the colored ccd photosensitive element and the black-and-white ccd photosensitive element can conveniently acquire the image information of the specimen. Thus, the full-automatic double-ccd photosensitive element digital microscope can be used for not only performing morphological observation on the specimen, but also taking digital images for a dyed tissue section so as to form the multi-focal plane holographic three-dimensional image, so that all the information of the cell can be observed in multiple layers and multiple focal planes, and accuracy of early diagnosis is greatly improved.

The invention discloses a rotation-prevention intermittent angle adjusting collet chuck which aims to achieve the automatic intermittent angle adjustment of a collet chuck and can prevent rotation. The collet chuck comprise a collet chuck body, a ratchet wheel is arranged on the collet chuck body in the circumferential direction, a push rod capable of pushing the ratchet wheel to rotate and a pawl enabling the ratchet wheel to be located are arranged on the ratchet wheel in the side direction, the bottom end of the pawl is hinged to a platform, the middle of the push rod is hinged to a disc face of a rotating disc, a long-strip-shaped hole is formed in the end, far away from the ratchet wheel, of the push rod, a base is arranged in the long-strip-shaped hole in the side direction, a guide pillar is arranged at the top end of the base, and the guide pillar and the long-strip-shaped hole are sleeved in a clearance mode to enable the push rod to have the axial freedom degree.

The invention discloses a six-degree-of-freedom exoskeleton type upper limb rehabilitation robot, which belongs to the field of rehabilitation robots. The robot comprises a seat mechanism, a shouldermechanism, an elbow mechanism and a wrist mechanism, and the seat mechanism is used for lifting the posture of a user, is connected with an upper limb exoskeleton mechanical arm and provides support for the mechanical arm. Through driving of a motor, rehabilitation training of six degrees of freedom including shoulder joint flexion / extension, abduction / adduction, big arm inward rotation / outward rotation, elbow joint flexion / extension, forearm inward rotation / outward rotation and wrist joint flexion / extension can be achieved, each degree of freedom can achieve independent or combined action, and the training efficiency can be improved. The upper limbs of the human body are fixed through the hook-and-loop fasteners and the mechanical arms, the mechanical arms have the mechanical limiting function, secondary injuries caused by a mechanical structure to the human body are avoided, and the use comfort is improved. The mechanical arm is designed in a modular mode, the structure is simple andcompact, rehabilitation movement of single-side or double-side limbs can be achieved, higher practicability is achieved, and popularization is facilitated.

The invention relates to a man-machine interactive sport vehicle. The man-machine interactive sport vehicle comprises mounting plates, a rotating structure, two wheels and a hub motor, wherein the rotating structure comprises a rotating rod, a first end of the rotating rod is connected to a first mounting plate in a clamped manner, and a second end of the rotating rod is rotationally connected to a second mounting plate; the rotating angle of the rotating rod can be limited through matching of a first limiting part and a second limiting part. According to the special rotating mode, the mounting plate on one side or the mounting plates on two sides can be driven to turn by force of feet, and a user is enabled to move forwards or backwards.

The invention relates to a man-machine interactive sport vehicle. The man-machine interactive sport vehicle comprises mounting plates, a rotating structure, top covers, two wheels and a hub motor, wherein a first mounting plate is provided with a first groove, a second mounting plate is provided with a second groove, and the first groove and the second groove are used for accommodating a rotating rod in the rotating structure, so that the first mounting plate and the second mounting are integrated with the rotating structure to serve as a mechanical total bearing structure to perform a bearing function. Reinforcing ribs are arranged on surfaces, close to the mounting plates, of the top covers, so that when a user is located on the top covers, the top covers have good mechanical strength and can bear the weight of the user more powerfully.

The invention relates to a saw blade clamping device, in particular to a saw blade clamping device which is applicable to a back-and-forth cutting tool; the saw blade clamping device comprises a locking bar and a locking sleeve which is sleeved on the locking bar and can rotate relative to the locking bar; a steel ball is arranged on the locking bar or the locking sleeve, and the locking sleeve or the locking bar is provided with a groove which rolls with the steel ball and extends in a peripheral direction; and a stopping part which stops the steel ball from rolling extends in the groove in a radial direction. According to the saw blade clamping device provided by the invention, the steel ball and the groove which can be matched are arranged between the locking sleeve and the locking bar, the steel ball rolls in the groove so that the locking sleeve and the locking bar rotate relatively, simultaneously the groove is provided with the stopping part which extends in the radial direction and can stop the steel ball from rolling, so that the rotation angle of the locking sleeve relative to the locking bar can be effectively limited, the structure is simple, and the operation is convenient.

The invention discloses a torsional pendulum type rotary inertia measuring device of an air-floatation bearing support platform. The measuring device comprises a pedestal, a sleeve, a torsional pendulum assembly and a workbench; the torsional pendulum assembly comprises an air flotation bearing seat, an air flotation bearing, a torsion bar seat and a torsion bar, the air flotation bearing seat is connected to the top of the sleeve, a shaft sleeve of the air flotation bearing is connected with the air flotation bearing, the torsion bear seat is connected to the lower end of a main rotation shaft of the air flotation bearing,, and the upper end of the torsion bar is connected with the torsion bar seat; a torsion bar adapter is arranged on the pedestal, the middle position of the torsion bar adapter is provided with a square hole, and the lower end of the torsion bar is connected into the square hole in a clamped manner; and the workbench is connected to the upper end of the main rotation shaft of the air flotation bearing, the bottom of the workbench is provided with a pendulum pin, the top of the air flotation bearing seat is connected with a photoelectric tube seat, and a photoelectric tube is mounted on the photoelectric tube seat. The invention discloses a torsional pendulum type rotary inertia measuring method of the air-floatation bearing support platform. The device and method of the invention have the advantages of easy realization, low cost, high stability, measuring efficiency and precision and working reliability and low influence of air resistance.

The invention provides a melt-spinning device which can prevent the damage to a pack body, can press up a spinning pack to mount the spinning pack in a spinning pack receiver without rotating the spinning pack, can surely coincide polymer passages each other even in a case of a plurality of the polymer passages, and can always arrange the nozzle of a spinneret at a fiber-arranging position optimizing the cooling of the fiber with a cooling gas flow. This melt-spinning device is assembled by preliminarily heating the spinning pack into which a polymer guide member 5 is incorporated, fitting the lower step portion 4c of the spinning pack body 4 into the holding face 10a of a holder 10 mounted on a spinning pack-mounting tool 20, placing inlet packings 16a, 16b on the polymer guide member 5, and pressing up the spinning pack-mounting tool 20 to insert the spinning pack 3 into the spinning pack receiver 1a, and threadedly engaging the holder 10 with a screw member 9 to hold the spinning pack 3 at a prescribed position.

The invention discloses an active padlock. The active padlock comprises a lock body and a lock strike mounted on the lock body, a lock hole corresponding to a key is formed in the lock body, a cavity is formed in the lock body, a spring is arranged at the bottom of the cavity, one end of the lock strike is inserted into the cavity to abut against the bottom spring, a clamping groove is formed in the part, located in the cavity, of the lock strike, a cam with a groove is arranged at the position, close to the clamping groove, in the lock body, and a steel ball is arranged in a groove of the cam. According to the active padlock, an electronic control driving motor of a circuit board is additionally arranged, the unlocking and locking states of the lock are monitored in real time, and the wireless emission and abnormity alarm functions and the like are provided; the motor is driven to realize unlocking and locking, so that the automation is improved; and a first positioning pin can prevent the lock strike from being disengaged from the cavity of the lock body, and a second positioning pin can play a limiting role so as to limit the rotation angle of the cam.

The invention provides a workshop vibration damping device for a rail vehicle and the rail vehicle. The workshop vibration damping device comprises a first mounting seat, a second mounting seat, a vibration damper, a connecting rod assembly and a rotating arm. The first mounting seat comprises a first mounting plate and a first supporting seat, wherein the first supporting seat is mounted on one side of the first mounting seat. The second mounting seat comprises a second mounting plate, a second supporting seat and a third supporting seat, wherein the second supporting seat and the third supporting seat are mounted on the second mounting plate. The vibration damper is arranged in parallel between the first mounting plate and the second mounting plate, the second supporting seat is hinged to one end of the vibration damper, and the other end of the vibration damper is hinged to one side of the first supporting seat. One end of the connecting rod assembly is hinged to the other side opposite to the first supporting seat, and the other end of the connecting rod assembly is hinged to one end of the rotating arm. The other end of the connecting rod assembly is hinged to one end of the rotating arm, and the third supporting seat is hinged to the other end of the rotating arm. Transverse stoppers are arranged on both sides, in the rotating direction of the rotating arm, of the third supporting seat so as to limit the rotating angle. According to the workshop vibration damping device for the rail vehicle and the rail vehicle, the relative motion between two adjacent carriages can be attenuated, transverse vibration reduction is realized, and the maximum lateral displacement is limited.

The invention discloses a pruning module with a mechanical jaw. The pruning module comprises a module fixed installing support. A branch fixing jaw assembly, an electric chain saw assembly and a chainsaw feeding assembly are arranged on the module fixed installing support. The electric chain saw assembly is connected with the chain saw feeding assembly. The branch fixing jaw assembly grasps the end, close to a tree trunk, of a branch, then the position of the electric chain saw assembly is adjusted through the chain saw feeding assembly, and the branch is pruned through the electric chain sawassembly. When the branch is pruned, the branch serves as a carrier to relieve counter-acting force, the pruning module is more stable and efficient during use, and the safety coefficient is also increased.

The invention discloses a supporting device capable of being fast folded and unfolded. The supporting device comprises a supporting base connected with a supporting rod, and a plurality of supporting bottom legs capable of being arranged on the supporting base in an unfolded or folded mode through rotation, wherein the supporting base comprises a body assembly and a body knob, the body assembly and the body knob can rotate relative to each other, the supporting bottom legs are arranged on the body assembly, and the body knob can relatively lock or unlock the unfolded supporting bottom legs when rotating relative to the body assembly in the forward or backward direction. According to the supporting device capable of being fast folded and unfolded, in the rotating process of the body knob, the unfolding states of the supporting bottom legs can be simultaneously locked or unlocked, all the supporting bottom legs can be locked or unlocked just by operating the body knob in the supporting device one time, and the supporting device is easy, convenient and fast to operate.

The invention relates to the technical field of transformer substation prefabricated cabin accessories, in particular to an equipment cabinet, a side-hidden type cabinet door component and a cabinet door mounting device. The cabinet door mounting device comprises a door shaft and a guiding track. The door shaft and the guiding track are matched in a guiding mode in the extending direction of the guiding track and are matched in a rotating mode around the axis of the door shaft. According to the cabinet door mounting device, the side-hidden type function of a cabinet door can be achieved, the problem that an existing cabinet door can occupy a large space at the front end of the equipment cabinet after being opened is solved, then maximization of a corridor space in a secondary equipment cabin can be achieved, and more equipment cabinets can be contained in the secondary equipment cabin.

The invention relates to an accessory of a children's car, particularly to a steering wheel of the children's car. According to the steering wheel of the children's car, an elastic device for enabling a handle to reset automatically is arranged, and the children's car can reset automatically after steering in a manual or remote-control manner, that is, the children's car can center automatically after steering, so that the steering operation of the children's car is very convenient; to be specific, when the children's car steers in the manual or remote-control manner, that is, when the handle rotates, the elastic resetting device has elastic deformation, after steering, the handle cannot be interfered by external forces, and the resetting device restores the original shape under the action of the elastic force at the moment, so that automatic centering of the children's car after steering is realized; in addition, a limiting block and a limiting bulge are arranged, so that the rotating angle of the handle can be limited, damage to the resetting device caused by the overlarge rotating angle of the handle is avoided, turnover of the children's car caused by sudden turning due to the overlarge rotating angle of the handle can be prevented by the aid of the limiting block and the limiting bulge, and the safety performance of the children's car is improved.

The invention provides an elevator speed limiter. A rope wheel and a car synchronously move through a steel wire rope; a ratchet wheel limits a self rotating angle through a limiting device. When the car stops at a certain floor, a linkage device is started, so that the ratchet wheel is in linkage with the rope wheel; at the moment, once a car sliding phenomenon occurs, the limiting device firstly limits the rotating range of the ratchet wheel; at the moment, as the ratchet wheel is in linkage with the rope wheel, the rotation of the rope wheel is also limited, and the rope wheel and the car synchronously move through the steel wire rope arranged on the rope wheel in a tensioning manner; after the rotation of the rope wheel is limited, the steel wire rope of the speed limiter lifts and pulls a safety clamp operating handle, a safety clamp brakes the elevator car, and the motion of the car is also limited, so that the effect of controlling car sliding is realized. According to the elevator speed limiter, a phenomenon in the prior art that the car cannot stop due to the simple control of braking of a traction machine (as the secondary braking of the traction machine is not tight) can be effectively avoided.

The invention discloses a military vehicle display screen multi-angle fixing device and an adjusting method, the device comprises a mounting bracket (1) and a sliding sleeve (2) slidably connected with the mounting bracket (1), and the sliding sleeve (2) is rotatably connected with a rotating bracket (3); a display device (5) is rotationally connected to the rotary bracket (3); a sliding rod (11) on the installation support (1) is in sliding connection with the sliding sleeve (2), one or more sliding rails (111) are arranged on the sliding rod (11), the sliding rails (111) are in contact connection with the sliding sleeve (2), and a locking mechanism (4) and a rotating shaft (54) are arranged on the rotating support (3) and the display device (5) respectively so that the inclination angle of the display screen (51) can be adjusted around the rotating shaft (54). Different view requirements of primary and secondary drivers are met, the occupied area is small, later vehicle refitting is facilitated, and the problem that vehicle-mounted screens cannot be used by primary and secondary drivers at the same time is solved.

The invention discloses a security monitoring device having a face recognition function, comprising a camera, wherein one end of the camera is rotatably connected with a first telescopic device, one end of the first telescopic device, which is far away from the camera, is fixed on a wall, the end of the camera, which is close to the first telescopic device, is also provided with a power line, oneend of the power line, which is far away from the camera, is connected with a power supply device, one end of the camera is provided with a placement slot, the bottom of the placement slot is providedwith a second telescopic device, one end of the second telescopic device, which is far away from the bottom of the placement slot, is provided with a light supplement lamp, the camera is rotatably connected with a rotating shaft, a connecting tube sleeves the rotating shaft and is fixed on the camera, and a spiral spring plate is fixed on the rotating shaft. The security monitoring device of theinvention has the beneficial effects that: the security monitoring device is simple in structure and convenient in use; in addition, a shooting angle can be controlled, thereby facilitating shooting at night; and moreover, quick movement can not lead to unclear pictures, thereby improving accuracy.

The invention discloses an electric bicycle pedal mechanism capable of being automatically folded. A rotary shaft (3) and a stop block (2) are installed on a pedal support (4). An L-shaped pedal (1) is composed of a pedal main board (13) and a vertical board (11), wherein the vertical board (11) and the pedal main board (13) are integrated and are of an L-shaped structure. The joint of the pedal main board (13) and the vertical board (11) of the L-shaped pedal (1) is hinged to the rotary shaft (3). When the L-shaped pedal (1) rotates around the rotary shaft (3), the rotation angle of the pedal main board (13) and the vertical board (11) can be limited through the stop block (2). A folding motor (8) is fixed to a motor support (7). A spindle of the folding motor (8) is provided with a coiling block (9). One end of an unfolding spring (5) is fixed to the motor support (7). When rotating around the rotary shaft (3), the L-shaped pedal (1) can be in butt joint with the other end of the unfolding spring (5). One end of a tensioning steel wire rope (12) is fixed to the vertical board (11), and the other end of the tensioning steel wire rope (12) is wound around the coiling block (9). When the electric bicycle pedal mechanism is used, the pedal can be automatically folded, the bicycle taking comfort is improved, and the occupied space of a folded electric bicycle is reduced.

The invention provides a multifunctional industrial robot manipulator, and relates to the technical field of manipulators. A movable path is formed in the top end of the front side in a transmission arm; the tail end in the movable path is fixedly connected with a spring; the outer side of the spring is fixedly connected with a pressing block; the interior of the movable path is connected with a rolling ball in a rolling manner; the rolling ball is movably connected with the pressing block; a semicircular block is connected to the interior, positioned on the outer side of the rolling ball, ofthe movable path in a sliding manner; the top end of the semicircular block is fixedly connected with a supporting block which can limit the rotating angle of a clamping arm; a front sleeve is connected to the front end of the clamping arm in a sleeving manner; at least three openings are uniformly formed around the outer wall of the front sleeve; grasping claws are arranged in the openings in a penetrating manner; the tail ends of the grasping claws are rotatably connected with rotating shaft; a hydraulic pump is connected to the interior of the clamping arm in an embedded manner; the front end of the hydraulic pump is in transmission connection with an electric hydraulic rod to achieve a linkage effect; and the grasping claws can work at the same frequency. The problems of joint fractureand non-uniform linkage of the grasping claws caused by the situation of rotating excessively are solved.

The invention discloses a nut locking structure. The nut locking structure comprises a main body and locking nuts, and the main body and the locking nut lock the main body and a screw through at leastone locking mechanism; a thread is formed in an inner ring of the main body, the locking mechanism comprises locking parts formed on the side wall of the main body, and the locking parts protrude from the side wall of the main body and are gradually lowered in the clockwise direction; and grooves which are matched with the locking parts are formed in the inner walls of the locking nuts, lock parts are arranged on one sides of the grooves in the anti-clockwise direction, the depth of the lock parts are gradually decreased in the clockwise direction, and protrusion blocks are arranged at the initial ends of the lock parts. According to the nut locking structure, the locking parts are arranged on the main body, matched lock parts and protrusion blocks are arranged on the locking nuts, forward and reverse rotation of the locking nut during a locking condition is limited, and the reliability of locking of the nut is ensured; and meanwhile, the protrusion blocks can show operation personnelwhether the locking nut is under a locking state or not.

The invention discloses a big data technology based abnormal gait recognition and correction method for people with disabilities, and belongs to the technical field of medical rehabihtation. The arrangement of a special gait recognition device can be realized; a gait recognition garment in the gait recognition device is designed by imitating the lower limbs of human bodies, so that the gait recognition garment can well fit with the bodies of patients after wearing; and therefore, the influences of garments on gait recognition can be greatly reduced, and the accuracy of gait recognition can beenhanced. A gait recognition method conducted by the gait recognition device is based on principles of computer vision and big data technologies; the method can significantly reduce the influences ofbackground light external factors on gait recognition, so that the accuracy of recognition can be further enhanced; and the method can provide accurate and reasonable correction suggestions accordingto big data. A combined using correction device is also arranged and can make the patients carry out correction training according to the correction suggestions given by the gait recognition device, so that rotation angle difference existing between the two legs of the patient can be accurately and effectively corrected, and correction effects can be significantly enhanced.

The invention discloses a spraying arm of a dish washing machine and a manufacturing method thereof. The spraying arm of the dish washing machine comprises a spraying arm body and an installing seat,wherein the spraying arm body comprises a connecting arm and a telescopic arm; the connecting arm is provided with a first cavity; the telescopic arm is provided with a second cavity; the connecting arm is connected with the telescopic arm; the first cavity communicates with the second cavity; the connecting arm is provided with a connecting seat; the connecting seat is arranged on the installingseat; the telescopic arm is provided with annular grooves; each annular groove is provided with a rotating sleeve; the rotating sleeves are rotationally connected with the telescopic arm; each rotating sleeve is provided with a spraying hole; and each spraying hole communicates with the second cavity. The method comprises the following steps of a, preparation; b, assembly of a first transmission shaft and a transmission sleeve; c, installation of the spraying arm body and the rotating sleeves; d, assembly of fixing cases; e, installation of the first transmission shaft and the transmission sleeve; f, installation seat calibration; and g, whole operation detection. The spraying angle of the spraying holes is adjustable, so that the spraying angle is wider; the spraying efficiency is higher;the spraying effect is better; the steps are optimized; the manufacturing steps are simplified; and the production efficiency is improved.

The invention discloses an audience lamp and relates to the technical field of illumination. The audience lamp comprises a rear shell, a rear cover plate, a clamp support and a lamp body, the rear shell is connected with the rear cover plate, and a first sealing ring is arranged at the connecting position of the rear shell and the rear cover plate. The lamp support is connected with the rear coverplate, the lamp body is mounted on the lamp support, and the lamp body can rotate relative to the lamp support. The lamp body comprises a front cover and a lamp cap, the front cover is connected withthe lamp cap, and a second sealing ring is arranged at the connecting position of the front cover and the lamp cap. By arranging the sealing ring, the lamp has the waterproof function, additionally,a lamp cap steering shaft is further arranged in the lamp body and can be used for adjusting the angle of the lamp body, the structure is simple, and larger practicability and market value are achieved.

The invention relates to the technical field of mowers, in particular to an agricultural mower which comprises a cutting shell, wherein a fuel generator is fixedly mounted at the top of the cutting shell, a mowing mechanism is mounted at the position, close to the end, of the bottom face of the cutting shell, and one side of the cutting shell fixedly communicates with a collecting shell. According to the technical scheme, the distance between a connecting shaft below an adjusting plate and the cutting shell and the distance between the connecting shaft below the adjusting plate and the collecting shell are increased, so that the overall gravity center of the mower is improved, the bottom face of the mower cannot make contact with a ridge in the climbing process of the mower, especially when the mower climbs over the highest point, therefore, collision between the mower and the ridge when the mower climbs over the ridge is avoided, and the completeness of the ridge is maintained.

The invention relates to a fixable laparoscopic puncture outfit. The fixable laparoscopic puncture outfit comprises a sheath tube, and further comprises a fixing structure and a connecting structure connecting the sheath tube with the fixing structure, and the fixing structure can be fixed or move on the sheath tube through the connecting structure in the axial direction of the sheath tube; the fixing structure comprises a fixing tube, an air bag, a liquid / air injecting channel and a liquid / air injecting valve; the fixing tube is arranged outside the sheath tube in a sleeving mode, and the length of the fixing tube is smaller than that of the sheath tube; the air bag is arranged at the front end of the fixing tube; one end of the liquid / air injecting channel is connected with the air bag, the other end of the liquid / air injecting channel protrudes out of the tube wall of the fixing tube, an end port of the liquid / air injecting channel is provided with the liquid / air injecting valve, the liquid / air injecting valve is arranged at the back end of the fixing tube, and a valve port of the liquid / air injecting valve protrudes out of the tube wall of the fixing tube; the air bag and the liquid / air injecting valve are communicated through the liquid / air injecting channel.

The invention discloses a sliding plate valve for a dry-mixed mortar storage tank. The sliding plate valve comprises a valve base, a valve inner cavity is formed in the valve base, a feeding channel and a discharging channel are formed in the valve base, an arc-shaped rotating sliding plate is arranged in the valve inner cavity, a first rotating disc and a second rotating disc are arranged at the two ends of the arc-shaped rotating sliding plate respectively, a first blocking plate and a second blocking plate are arranged at the two ends of the valve inner cavity respectively, a first rotating connecting device is arranged between the first blocking plate and the first rotating disc, a second rotating connecting device is arranged between the second blocking plate and the second rotating disc, the second rotating connecting device is connected with a sliding plate rotating control device, and a rotating limiting locking device is arranged between the sliding plate rotating control device and the second blocking plate. When the valve is used, the sliding plate rotating control device is utilized for rotating the arc-shaped rotating sliding plate, a discharging opening is blocked, the rotating limiting locking device can limit the rotating angle of the sliding plate, an arc-shaped plate is adopted by the sliding plate, force, acting on the sliding plate, of mortar can be dispersed, operation is easy and convenient, and the service life of the sliding plate is prolonged.

The invention relates to a connection device used for a rear engine cover driving device of a vehicle, especially a device used for connecting a driven shaft (5) of the driving device and a hinge chain of the rear engine cover of the vehicle. The connection device comprises a driving rod (10) comprising an accommodation port (12) used for accommodating a driven shaft (5) and a slide groove opening (11), a through connection part (3) provided with a shaft neck (30), and a fixing element (2,20) used for keeping the through connection part (3) on the driving rod (1). The through connection part (3) can be connected with the hinge chain, and the shaft neck (30) passes through the slide groove opening (11). The neck shaft (30) is provided with a bearing area (31) and a fixing area (32) fixedly disposed on the fixing element (2,20). The shaft neck (30) is connected with the fixing element (2,20) on the fixing area (32) in order to prevent the loosening of the through connection part (3) from the driving rod (10). The bearing area (31) is disposed in a slide groove opening (11) of the driving rod (10) during the bearing process and / or sliding process.