85results about How to "Rotation safety" patented technology

A powered rotating and articulating self-contained jib boom of both swing jib and non-swing jib design that attaches to mobile cranes and functions as an aerial lift when fitted with an optional work platform. Since it pins onto any existing crane by attachment to a standard swing-jib mounting system using the four pinning holes and pins located on the crane's outer most boom tip sheave head, it achieves powered leveling and rotation of a platform without having to modify or add components to the existing crane. Also, with the crane jib boom hydraulically powered for rotation in the horizontal plane up to 360-degrees and articulation in a 90-degree vertical plane, an attached work platform can be kept level during up/down articulation of the crane boom in its vertical plane. Furthermore, with dielectric insulation, the jib boom, crane boom, and attached work platform are usable on live electrical line work.

A dipping apparatus for dipping the workpiece W in a treatment bath. The workpiece is transferred while fixed on a conveying traveling body 2, and each one flipped upside down together into the treatment bath for carrying out a surface treatment of the workpiece W.

The dipping apparatus is provided with a positioning and fixing device to position the conveying traveling body 2 onto the guide rail 17a on the rotation base 15 at a fixed position and to fix the conveying traveling body 2 to the rotation base 15. A feeding mechanism feeds the conveying traveling body 2 to the fixed position on the rotation base 15.

The rotor of a hybrid aerodyne for producing lift by rotating during a stage of vertical flight and then for being held stationary and stored longitudinally during a stage of cruising flight has at least one single-blade with a counterweight. The length of the active blade that generates lift of the rotor while rotating is significantly shorter than the length of the radius of the rotor. The portion that carries the active blade that makes the connection between the active blade and rotor mast is structurally rigid. The rigid portion that carries the active blade presents a cross-section optimized to provide zero or almost zero lift and very little aerodynamic drag while the rotor is rotating. The assembly is hinged about a transverse axis perpendicular to the vertical axis of the rotor and substantially on the vertical axis of the rotor mast.

The invention discloses a folding handlebar which comprises a stand pipe and a folding base, wherein the folding base is arranged on the stand pipe, handles are symmetrically arranged at the two ends of the folding base, each handle comprises a horizontal pipe, a limiting button and a rotary plug, a sliding groove is formed in the inner surface of the folding base, each rotary plug is arranged on the top of the corresponding horizontal pipe, a boss is arranged on the top of each rotary plug and is clamped in the sliding groove, an opening is formed in each boss, through holes are formed in the two ends of the folding base, each handle further comprises a tension spring, a button sleeve and a torsion spring, positioning rivets are arranged at the two ends of the folding base in a penetrating mode and correspond to the openings of the bosses, a groove communicated with the opening of the corresponding boss is formed in each rotary plug, each button sleeve is arranged on the corresponding horizontal pipe in a sleeved mode, each torsion spring is arranged on the corresponding button sleeve, a limiting table is formed on the head portion of each limiting button and is inserted into the corresponding through hole in the folding base, the tail portion of each limiting button abuts against the corresponding torsion spring, one end of each tension spring is arranged in the corresponding horizontal pipe, and the other end of each tension spring is connected with the corresponding positioning rivet. The folding handlebar is smoother in use, capable of saving more labor, safe and reliable.

The invention discloses a vertical slippage-type stereoscopic garage with a rotatable device. The invention relates to a mechanical stereoscopic parking garage which comprises a laneway, multiple layers of car storage garages located on one side or two sides of the laneway, a parking device installed in the laneway and a carrying device. The garage is improved in that the parking device comprises a fixation frame, a lifting device, a translation device and the rotatable device; the fixation frame is installed in the laneway; the fixation frame comprises two parallel vertical frames located on the width direction of the multiple layers of car storage garages as well as horizontal frames installed on tops of the two vertical frames; the lifting device is installed between the two vertical frames and can be moved vertically along the vertical frames; the translation device is installed on the lifting device and can be moved along the width direction of the lifting device; the rotatable device is installed on the translation device and can make circular motion on the translation device; and the carrying device is used to carry cars at parking spaces of the multiple layers of car storage garage and can be moved back and forth on the rotatable device. The garage disclosed by the invention has the advantages that three-dimensional synchronous carrying of vertical moving, translation and rotation can be achieved; and carrying efficiency and the access speed during use are greatly increased.

The invention provides a drilling, loading, transporting and anchoring integrated machine with dual platforms and four arms for a coal roadway, comprising a caterpillar travel part, an engine body platform, four drill arm parts, four hydraulic drilling rig parts, a provisional supporting device, a hydraulic and operation system, a pump station part, a rear support part, a shovel plate part, a first conveyor and a second conveyor and being characterized in that the integrated machine also comprises a lifting platform and a platform lifter; the platform lifter is arranged on the engine body platform, and the lifting platform is connected above the platform lifter; four drill arm parts and four hydraulic drilling rig parts are installed at the rear sides of the upper and lower parts and the left and right sides of the lifting platform; and the provisional supporting part is fixedly installed on the front end of the lifting platform. The integrated machine in the invention can complete all procedures such as drilling, coal loading, coal transporting, anchor bolts and anchor cables construction, provisional supporting and the like, and improves the centrality, flexibility and systematicness of tunneling equipment, thus reducing mechanical handing, installing and dismounting operations on headwork faces, lowering labor intensity for workers and increasing work efficiency of tunneling.

A power transmission apparatus and a rotation apparatus are disclosed. A power transmission apparatus that includes: a power generating part, which includes a drive axis; a worm, which is joined to the drive axis; a worm gear, which meshes with the worm, and which includes an output axis configured to transmit power; and a friction hinge, which is joined to the output axis, and which is configured to engage and disengage a rotational force of the output axis, can provide sufficiently high deceleration and high torque, even when a low-capacity motor having a low cogging torque is used. Also, the power transmission apparatus can be made safer and less noisy for not only automatic operation by the motor but also manual operation by a user, while the gear module, motor, etch, can be protected from excessive loads.

An electric working machine including: a motor; a driving unit configured to be driven by the motor; a trigger switch configured to allow rotation of the motor; a power supply unit configured to supply electric power to the motor; and a control unit configured to control rotation of the motor, characterized in that: the electric working machine further comprises a switching element configured to perform short-circuiting between terminals of the motor to apply electronic braking, wherein the control unit is configured to perform adjustment of the braking by controlling the switching element when stopping the motor.

The invention relates to an installation and transportation vehicle for an efficient safe mine hydraulic support, which is used for transporting and installing a hydraulic support. The installation and transportation vehicle for the efficient safe mine hydraulic support comprises a rotary assembly, a bearing assembly, a bearing beam assembly, a push-and-pull transitional assembly, a tilting-preventing assembly and a rear tilting assembly, wherein a rotary hydraulic cylinder in the rotary assembly is arranged, so as to drive a rotary rack, the rotary rack is in engaging transmission with a rotary gear, and additionally, the rotary gear is installed on a rotary shaft which is fixed together with a rotary plate, so that a rectilinear motion of the rotary hydraulic cylinder is converted into a rotary motion of the rotary plate, the hydraulic support which is installed on the rotary plate can rotate at a large angle, and the hydraulic support can efficiently, safely and conveniently rotate. All of the assemblies are matched, so that the installation and transportation vehicle can be tilted, so as to be convenient for unloading and installing the hydraulic support. Additionally, the installation and transportation vehicle has the advantage of compact structure, and mine operating environment and working conditions are preferably satisfied in the aspect of the body width of the installation and transportation vehicle.

The invention relates to a nursing bed. The nursing bed comprises a bed frame, wherein a mattress frame is arranged on the bed frame, a mattress capable of being switched between a sitting mode and alying mode is connected to the mattress frame, the mattress frame is supported and connected to the bed frame in the mode of being capable of horizontally rotating around the vertical axis, and a rotation driving mechanism used for driving the mattress frame to horizontally rotate is arranged on the bed frame. The nursing bed has the advantages that the mattress frame does not need to be manuallyrotated, the working intensity of medical staff can be reduced, the mattress frame is more stable, smoother and safer when rotating, and the service life is long.

The invention discloses rotary hoisting equipment for a stiffening beam of a suspension bridge and an erecting method of the stiffening beam. The rotary hoisting equipment comprises rotary slings, balance beams and a hoisting mechanism, wherein the rotary slings are used for hoisting stiffening beam segments and enabling the hoisted stiffening beam segments to horizontally rotate; the balance beams are positioned right above the rotary slings; the hoisting mechanism is used for hoisting the rotary slings through the balance beams and can move forwards and backwards in the direction longitudinal to the bridge; the stiffening beam segments are hoisted on the rotary slings, the rotary slings are hoisted on the balance beams, and the balance beams are hoisted on the hoisting mechanism and are positioned under the hoisting mechanism; the hoisting mechanism is mounted on cable bent towers of the constructed suspension bridge. The erecting method of the stiffening beam comprises the following steps of: I, erecting a rear-side beam body or a front-side beam body; II, mounting a hoisting balance mechanism; III, erecting a middle beam body; and IV, erecting the front-side beam body or the rear-side beam body. According to the rotary hoisting equipment for the stiffening beam of the suspension bridge and the erecting method of the stiffening beam, disclosed by the invention, the design is reasonable, the realization is convenient, the use effects are good, the construction difficulty is low, and the hoisting and erecting process of the stiffening beam of the suspension bridge can be simply and rapidly completed.

A system and method for controlling the telescopic movements of two telescopic beams moving inside a spreader frame, and the locking movements of the twistlocks in the telescopic beams. The telescopic movement of the telescopic beams are held in position at a desired place in relation to the frame with locking members. The system has a joint multi-rope lever system for performing the telescopic movement of the telescopic beams and the locking movements of the twistlocks. The system has an actuator operating the multi-rope lever system. The system also includes a control system supervising and controlling the actuator and the lever system.

The invention provides a uniform cable winding device. The uniform cable winding device comprises a base. The base comprises a cuboidal support portion, a first vertical portion and a second verticalportion, wherein the first vertical portion and the second vertical portion are arranged at the two ends of the top face of the support portion correspondingly. A rotating disc is arranged on a cablewinding barrel close to the side of the second vertical portion in a sleeving manner. The end face, backing against the second vertical portion, of the rotating disc is provided with a transmission potion. The transmission portion is of a protruding structure, wherein the cross section of the protruding structure is in an Archimedes spiral shape. The top face of the support portion is provided with a groove, wherein the groove avoids the rotating disc and the transmission portion. A worm is rotatably arranged on the support portion, wherein the worm is matched with the transmission portion. Acam is arranged on the worm in a sleeving manner. The cam comprises a body, wherein the body rotates along with the worm. A protruding portion and a sunken portion are symmetrically arranged on the body. The support portion is further provided with a swing rod, wherein the swing rod is matched with the cam. The bottom of the swing rod is rotatably connected to the support portion. The top of the swing rod extends to the cable winding barrel. By means of the uniform cable winding device, cables can be wound on the cable winding barrel orderly and uniformly; and the cables can be stored to the greatest extent in a limited space, and the uniform cable winding device can be used in future conveniently.

The invention provides a descaling device for an oilfield water pouring pipe and an operation method. The device comprises a circular sleeve, wherein a group of inserting holes is formed around the circumference of the circular sleeve; transverse thread sleeves which are connected to transverse thread rods are welded to the inserting holes; the transverse thread rods are connected to transverse supporting rods; fixing sleeves are inserted to the outer sides of the transverse supporting rods; fixing holes are formed in the transverse supporting rods; concentric fixing holes are formed in the fixing sleeves and are overlapped with the fixing holes and are fixed through bolts; arc-shaped scrapping plates are welded to the fixing sleeves; the top parts and the bottom parts of the arc-shaped scrapping plates are provided with cutting edges; a group of supporting plates is connected around the circumference of the circular sleeve; the supporting plates are connected to screw sleeves which are connected to screws; and the screws are connected to couplings which are connected to motors. The device is applicable to descaling the oilfield water pouring pipe.

A chafing dish and frame assembly including a lower frame section for supporting a disposable food tray for holding food, an upper frame section pivotally attached to the lower frame section; a disposable food cover supported by the upper frame section; and a pivot hinge that pivotally connects the upper frame section to the lower frame section. The pivot hinge allows the disposable food cover to be pivoted up to ninety degrees relative to the disposable food tray from a closed position, wherein the disposable food cover rests on top of the disposable food tray, to an open position wherein the disposable food cover is pivoted upwardly so that the food in the disposable food tray may be accessed.

The invention discloses a method for correcting deviation of a connecting surface of a wind wheel system and a transmission spindle of a wind generating set. The method comprises the following steps that the wind wheel system is reversed by using aerodynamic force, a hydraulic braking device of the wind generating set is adopted for braking, and after the reversing-braking cycle is repeated for multiple times, the deviation of the connecting surface of the wind wheel system and the transmission spindle is corrected. According to the method, the deviation of the connecting surface of the wind wheel system and the transmission spindle is corrected by adopting aerodynamic force and a wind turbine generator braking device, and the deviation of the connecting surface of the wind wheel system and the transmission spindle can be effectively solved.

The invention discloses a frameless detachment-free rotary air heater, which consists of 3 to 8 groups of outer fin reinforced heat transfer tube bundles, wherein each group of heat transfer tube bundle has a frameless self-supporting structure consisting of spiral fin heat transfer tube bundles welded on a thin-walled inlet steam collecting tank and a thin-walled drainage collecting tank respectively, and the heat transfer tube bundles are averagely distributed in a primary air flue and a secondary air flue; any heat transfer tube bundle can rotate separately in a full angle of 360 degrees by adopting the self-supporting stable structure of the tube bundle so as to solve the problems that separate rotation of the heating surface of a certain stage cannot be realized, rotation in the full angle of 360 degrees cannot be realized, the heating surface cannot be rotated without cutting off steam, the operation part has complex structure and is not easily detached or maintained and ash blockage, leakage and fin deformation are caused; and the rotary air heater is frameless and detachment-free, can rotate in the full angle of 360 degrees, and is convenient to maintain.

A self-piercing hollow press-in element, in particular a nut element for attachment to a sheet metal part, wherein the press-in element has a flange part of a larger diameter and a shaft part of a smaller diameter. The shaft part extends away from the flange part and has a circular piercing edge at its end face remote from the flange part. The side of the flange part facing the shaft part forms a sheet metal contact surface in ring shape and features providing security against rotation are provided at the shaft part which extend approximately from the level of the sheet metal contact surface over a part of the length of the shaft part along the latter. A ring-like recess is provided radially within the ring-shaped sheet metal contact surface in the flange part and excess material for the shaft part which arises during manufacture of the ribs providing security against rotation is located within the ring recess. Further designs of the press-in element and also of a component assembly and methods for the manufacture of the press-in element and of the component assembly are described.

The invention discloses a crushing device for production and processing of pickled pepper bamboo shoots. The crushing device comprises a vibrating screen, a machine body shell and slicing knife blades. The top end of the machine body shell is provided with a slicing knife protective shell. The lower portion of the left end of the slicing knife protective shell is provided with a hinge. The lower portion of the left end of the interior of the slicing knife protective shell is provided with a slicing knife motor. The right side of the slicing knife motor is provided with slicing knives. When theslicing knives break down, the knives can be replaced and maintained without dismantling the machine body shell. Besides, the vibrating screen is arranged between a slicing device and a shredding device and shakes off impurities on the vibrating screen to enable materials to be cleaner. The impurities in the materials are removed to prevent a shredding knife from cutting foreign substances and being damaged. Moreover, the shredding-width-adjustable shredding knife is arranged and is composed of two fixing knife rolls and an adjustable knife roll. The shredding knife is adjusted through an adjustment lever according to different demands to change the shredding width. Accordingly, the adaptability of the machine is higher.

A vertical axis wind turbine comprises a base and blades. A rotation shaft is arranged in the base and provided with a fixed disc and a plurality of blade sets. The blade sets are evenly distributed. Each blade set comprises supporting rods hinged to the corresponding blades. A buffering and beneficiating device is arranged at the outer end of each blade in a matched mode. A hydraulic pump is disposed on the fixed disc. An inner gear is arranged on the inner wall of the base, and a hydraulic pump gear is engaged with the inner gear. An oil outlet of the hydraulic pump is sequentially connected with a pressure adjusting device and an execution mechanism. The pressure adjusting device comprises an adjusting valve shell. The adjusting valve shell is provided with an adjusting valve oil outlet, an adjusting valve oil inlet, an oil return opening and an oil return opening adjusting device matched with the oil return opening. The adjusting valve oil outlet is communicated with the execution mechanism. The adjusting valve oil inlet is connected with the oil outlet of the hydraulic pump. The oil return opening is communicated with an oil tank of the hydraulic pump. The vertical axis wind turbine can be started and rotated at a low wind speed, operation is stable, and the operation safety of the vertical axis wind turbine is improved.

The invention discloses a drilling, pile splicing and pile planting all-in-one machine and a construction method thereof. The drilling, pile splicing and pile planting all-in-one machine comprises a walking mechanism, a base plate, a plurality of hoisting devices and a rotary disc capable of rotating relative to the base plate. Operation pile position holes for drilling and pile planting are formed in the base plate; a tower which has a circular truss structure and is coaxial with the rotary disc is fixed on the rotary disc; a pipe pressing power head, a plurality of drilling power heads, a plurality of rotary welding devices for lengthening and welding upper and lower pipe piles and a pile feeding pipe driving head are sequentially arranged along the outer circumference of the tower; eachpipe pressing power head, each drilling power head, each rotary welding device and each pile feeding pipe driving head can be located over the corresponding operation pile position holes in sequenceafter rotating along with the rotary disc of a rotary disc device; and pile pressing equipment driven by an oil cylinder for pile planting is mounted on the base plate through a guide rail. Accordingto the drilling, pile splicing and pile planting all-in-one machine, drilling, pile splicing and pile planting construction can be completed on one device, the height of the device is relatively low,the concentricity of devices with multiple functions on the rotary disc is good, and the stability of the device is high.

In a power transmission device for a vehicle, a boss portion of a clutch guide, which is an input-side rotation member of a clutch unit, includes: a spline portion spline-connected to a small-diameter portion at one end of a center shaft which is an input shaft; and a fitting portion that extends further from the spline portion in an axial direction to contact the outer circumference of a medium-diameter portion of the center shaft. A recess functioning as a torque fuse is formed in the medium-diameter portion of the center shaft corresponding to the fitting portion. When the center shaft is severed or disconnected at the recess, the medium-diameter portion of the severed cut center shaft can still remain within the fitting portion, so that appropriate centering can be secured and stable self-propulsion of the vehicle can be secured without unwanted misalignment of the axis of rotation of the clutch.

A finished component assembly includes a sheet metal part, a sheet metal element and a rivet element. The rivet element is provided with a head part of larger diameter, which serves as a thread carrier and which forms a sheet metal contact surface, as well as with a hollow cylindrical rivet section of smaller diameter. The rivet section projects from the head part at the side of the sheet metal contact surface and extends through an aperture and a collar of the sheet metal part as well as through a hole of the sheet metal element and is shaped into an at least L-shaped, preferably U-shaped, rivet bead at the side of the sheet metal element remote from the sheet metal part, with the sheet metal contact surface contacting the side of the sheet metal part remote from the sheet metal element.