74results about How to "Meet the lifting requirements" patented technology

The invention relates to the field of anti-freezing and de-icing, in particular to an anti-freezing and de-icing mechanism for a lock gate or an arc gate. The anti-freezing and de-icing mechanism comprises an automatic lifting part, an anti-freezing and de-icing part, a cable limiting part and a visual monitoring and alarming part. A heavy hammer traction guide steel wire rope is adopted as a guidance for automatic lifting of the anti-freezing and de-icing device for the lock gate or the arc gate; a single floating barrel lifting system is adopted in such a manner that the debugging and mounting operations can be conveniently performed; two diving pumps and a main pipe are adopted in such a manner that the cable is enabled to meet the device lifting requirements by a three-way connection way and a cable limit suspension sliding way; the sections of the main pipe are connected in a such a flange division way that transportation is conveniently realized and bending deformation is prevented; the conventional crane is adopted in such a manner that the lifting operation is performed through a lifting hook arranged on a floating barrel; an outlet of a water spraying pipe forms an oblique upward angle of 45 DEG with the horizontal main pipe in such a manner that water flow form is more favorable for anti-freezing and de-icing; and the visual remote monitoring and alarming function is adopted in such a manner that an effective guarantee is provided for safe, stable and economic running of the lock gate or the arc gate.

The invention discloses a lifting belt-type suspender for horizontal hoisting and belongs to mechanical hoisting equipment. The lifting belt-type suspender solves the problem that the existing horizontal hoisting suspender has a limited adjustment or use range, low efficiency and poor universality. The lifting belt-type suspender comprises a hanging beam, lifting belts, front and rear rotating shaft assemblies and an overturn support. The two lifting belts are hung under left and right ends of the hanging beam. One end of each one of the two lifting belts is connected to the front rotating shaft assembly and the other end of each one of the two lifting belts is connected to the rear rotating shaft assembly. The front rotating shaft assemblies and the two rear rotating shaft assemblies are connected to the overturn support. The overturn support comprises four tripods. The lifting belt-type suspender has a simple structure, good versatility, high strength and good integrated mechanical properties. All the parts of the lifting belt-type suspender can be detachably connected so that manufacture and maintenance are simple and manufacturability is good. The lifting belt-type suspender can be used for horizontal hoisting of cabins having different quality, centroids and sizes and realize change of a static displacement state of the cabins under support action of the overturn support.

The invention provides a pour point depression and viscosity reduction agent. The pour point depression and viscosity reduction agent is characterized in that the pour point depression and viscosity reduction agent is a copolymer formed by a first monomer and a second monomer, wherein the first monomer is R1-CH=CH-COOR2, R1 is H, alkyls of C1-6 or COOH, R2 is alkyls of C12-24, and the second monomer is an olefinic bond-containing monomer with surface activity.

The invention discloses a steel rail roller conveyor. The main structure of the conveyor is that a motor is engaged with a gear fixed in the lower part of a transmission shaft inside a driving vertical roll cabinet through a retarder, a pair of gears fixed in the middle part of a stationary transmission shaft are engaged with each other and respectively engaged with two groups of intermediate gears, the intermediate gears are engaged with the gear in the middle part of a driving vertical roll to drive the rotation of the driving vertical roll, each intermediate gear is respectively engaged with a pivoted arm on the main shaft of the driving vertical roll and a pivot arm on the stationary transmission shaft, each main shaft of the driving vertical roll respectively forms a gear-link rod mechanism together with the stationary transmission shaft, and the four driving vertical roll cabinets are independent and have closed guide track structure. The inventive steel rail roller conveyor realizes the rotation of two pairs of driving vertical rolls for holding the rail web at the same rotation speed. The driving vertical rolls convey long steel rails to the 500-meter long steel rail storage platform along a roller line and then open to make room for hoisting the steel rails, so as to meet the technical requirements of driving the steel rails to travel along the roller line of the 500-meter long steel rail storage platform.

The invention discloses an unfolding-type mobile service publicizing vehicle. A side board on one side of a compartment is a movable door; a first support is symmetrically arranged at the front and back ends of the movable door respectively and connected with a second support in the compartment by a hydraulic cylinder; the middle parts of the front and back ends of a display screen frame are hinged with a positioning seat on a top board by a support arm respectively; a front linear guide rail and a back linear guide rail which are parallel to each other are fixed on the top board and provided with a slide block respectively; the slide blocks are fixed with the display screen frame; an electric motor is arranged between the two linear guide rails; the output shaft of the electric motor is coaxially connected with a lead screw; and nuts matched with the lead screw are fixed in the centers of the sides of the display screen frame. The using space of the mobile service publicizing vehicle can be effectively expanded so as to accommodate more exhibition stands, exhibits and visitors; and a light-emitting diode (LED) screen lifting mechanism in the unfolding-type mobile service publicizing vehicle takes up small space, meets the lifting requirement of the LED screen of the mobile service publicizing vehicle, and is characterized in that: the mechanism moves stably, is safe and reliable, and the like.

A construction method for integrally hoisting a large-size multi-edge-and-corner overhanging truss is disclosed. Integral assembling of a steel pipe truss is conducted on site, and integral hoisting is conducted after assembling is completed; the truss is connected with three welding positions in a butt-joint mode and then is welded firmly; two 500 t all-terrain cranes and a 350 t all-terrain crane are adopted to hoist the whole truss simultaneously, and step-by-step hoisting is conducted from south to north; the truss is totally provided with three main stress support joints which are all fixed by adopting butt welding, a third calibration point support is located at the top of the truss, a welded ball joint at the position of the third calibration point is a support point of a steel rainshed grid frame actually, a first calibration point support and a second calibration point support are located on both the left and right sides of the bottom of the truss correspondingly, and the first calibration point support and the second calibration point support are global stress supporting points of the truss. The construction method for integrally hoisting the large-size multi-edge-and-corner overhanging truss has the characteristics that the construction safety is high, the construction period is short, the engineering quality is easy to guarantee, the ground integral assembling efficiency is high, and the construction cost is reduced greatly.

The invention discloses an air cylinder linkage plug pin type automatic tray supply warehouse. The air cylinder linkage plug pin type automatic tray supply warehouse comprises a rack assembly, a chainwheel conveying assembly, a sensor assembly, a plug pin assembly, a protection frame assembly and a power assembly' the power assembly comprises an air cylinder assembly and an engine assembly whichare arranged in a cavity formed in the middle of the rack assembly. Through fit between multiple sensors and an air cylinder and ingenious fit of the chain wheel conveying assembly, full-automatic continuous stable extraction and conveying of trays can be achieved, and the warehouse is portable and efficient; the air cylinder with an electromagnetic valve is used for lifting the trays, the characteristic of the electromagnetic valve is used, during power failure, the pressure can be kept, one-air-cylinder multi-stroke moving is achieved, in the key fit position in the midway, the air cylinderis lifted for staying, a vertically moving execution mechanism is reduced, and the warehouse is simple and reliable; a crank connecting rod mechanism is used, pushing of the air cylinder s converted into rotation of a plug pin shaft, the plug pin can be driven to be rotated out, separation of the trays can be achieved, and through shrinkage, the plug pin is driven to be reset.

The invention discloses a high-wax thick oil pour point depressant and a preparation method thereof, and belongs to the field of polymer material preparation. The pour point depressant is formed by copolymerizing maleic anhydride and 2-acrylamido-2-methylpropanesulfonic acid according to a molar ratio of 1:0.01-1, and has a molecular weight of 3000-100000 g/mol. The pour point depressant has good temperature and salt resistance, the resisting temperature reaches 140 DEG C, and the resisting salinity reaches 200000 mg/L; and the pour point depressant also has a good pour point depression effect, and can reduce the freezing point of thick oil with the wax content of 30-40% by 6 DEG C or above. The pour point depressant can be widely applied to pour point depression of high-wax thick oil wells.

The invention discloses a mounting method of an external floating roof oil tank active protection system. The system comprises a micro fog sprayer and a sampling probe arranged in a first sealing ring and a second sealing ring of the external floating roof oil tank, wherein the micro fog sprayer and the sampling probe are connected with a field device arranged outside a fire dike of the oil tank through a pipe network. Through the pipe network structure design and mounting method of communicating the field device with the micro fog sprayer, and connecting the field device with the sampling probe, the system can be mounted under the condition that the oil tank has oil; the lifting requirements of the oil tank along with the liquid level can be satisfied; the load of the oil tank floating roof is not affected by the added materials; through the design of a hose, the static electricity generated when the liquid flows can be eliminated; and the lightning protection and grounding diversion ability of the oil tank can be strengthened.

The invention discloses a lifting tool for a large steel ingot and a large forge piece. The lifting tool for the large steel ingot and the large forge piece comprises two clamp arms and two clamp claws, wherein the lower end parts of the two clamp arms are fixedly connected with the two clamp claws respectively; the middle parts of the two clamp arms are hinged through a pin shaft; a cover plate is installed on the pin shaft; and the two clamp claws are matched to clamp the large steel ingot and the large forge piece. The lifting tool for the large steel ingot and the large forge piece is simple in structure, convenient to install and detach and non-hazardous in operation, is applicable for lifting the large steel ingot and the large forge piece, can be operated only by a crane operator, without needing other auxiliary workers, thus saving manpower to a certain extent, is strong in practicality, can improve the productivity, reduce the labor intensity and the operating dangerousness of working staff, meets lifting requirements of the large steel ingot and the large forge piece, and achieves safe and reliable lifting work; the workpiece clamping principle of the lifting tool for the large steel ingot and the large forge piece is different from that of an ordinary lifting tool, and a clamping force is generated by self weight of a workpiece, so that the lifting tool meets requirements on structural strength and rigidity, has good clamping performance and is material-saving.

The invention relates to a transition roller machine provided with an electronic elevation device used for a head end of a front axle. The transition roller machine comprises a chassis fixed on a mounting top-plate. A plurality of roller shafts which are arranged in parallel are rotationally connected with the chassis of the roller machine and rollers are fixed at two ends of the roller shafts. A covering plate is arranged above the roller shafts and grooves are arranged on the covering plate where rollers exist so as to lead the wheel faces of rollers to partially rise upwards from the grooves; transmission chain wheels are respectively fixed at two ends of the roller shafts; a roller machine motor is arranged on the chassis of one side and a driving chain wheel is fixed on an output shaft of the roller machine motor; a transmission chain is arranged around the driving chain wheel and the transmission chain wheel; and a bottom plate is arranged under the mounting top-plate and an electronic elevation device used for the mounting top-plate is arranged on the bottom plate. When in working, the transition roller machine can realize the transition of work pieces between two roller machines of different heights with an excellent durability and the elevation of work pieces of different weights, and can largely reduce the shake and noise emerging during the elevation process.

The invention discloses a horizontal lifting anti-theft door ventilation window. The window comprises a window frame embedded on an anti-theft door and a ventilation door capable of closing a window frame inner opening, the window frame comprises a fixing frame mounted on an anti-theft door ventilation opening from the inner side of the anti-theft door, and a ventilation window panel mounted on the anti-theft door ventilation opening from the outer side of the anti-theft door and matched with the fixed frame for fixing, a ventilation grating is arranged on the ventilation window panel, two vertical sides of the fixed frame inner opening are provided with vertical guide grooves with opposite openings, two vertical sides of the ventilation door are inserted in the two vertical guide grooves,and the horizontal lifting anti-theft door ventilation window further comprises a lifting mechanism capable of enabling the ventilation door to horizontally lift along the two vertical guide grooves,and the ling mechanism is a steel wire hanging, rack and gear or rack pawl lifting mechanism. After the ventilation door of the anti-theft door ventilation window is opened, the ventilation door cannot protrude towards a room, and cannot occupy the indoor space, the influence of the ventilation door on the indoor space is small, normal activity of indoor persons cannot be disturbed, and safety ofthe indoor persons cannot be endangered.

The invention provides a stereo garage lifting mechanism adopting rigid-flexible combination for traction, and relates to the field of stereo garages. The stereo garage lifting mechanism adopting the rigid-flexible combination for traction comprises driving motors, two ball screw rigid traction parts, steel wire ropes, car-carrying platforms, ball coupling devices, lifting connecting pieces, pulleys and lifting control systems. The motor drives the two ball screw rigid traction parts and the two steel wire rope pulley flexible traction parts to achieve the lifting motion of the car-carrying platforms. The ball coupling devices are used for protecting ball screws from being damaged by a bending moment so as to improve the reliability of the ball screws. The lifting control systems can accurately control the driving motors and brakes at the tails of the driving motors to achieve the lifting motion or stopping of maintaining of the platforms, and the steel wire ropes adopt dual winding so as to avoid sudden rope breaking in the lifting process. The stereo garage lifting mechanism adopting the rigid-flexible combination for traction is low in manufacturing cost, safe and reliable, convenient to implement and good in universality, and can satisfy the requirements for lifting of various double-layer or multi-layer lifting cross sliding type stereo garages.

The invention provides a novel lifting appliance for transporting a passenger car body. The novel lifting appliance comprises a lifting appliance body and a lifting eye device, wherein the lifting appliance body comprises a main framework and a lifting ring connected with the main framework through a lifting chain; the main framework comprises four lifting points; the lifting eye device comprises lifting claws arranged on the lifting points respectively; lifting point slings are also arranged on the lifting points; each lifting point sling is connected with a U-shaped support through a connecting ring. The novel lifting appliance has the advantages that complete dependence on the upper part side window structure of the passenger car body is avoided; the strength pressure on the upper part side window structure is reduced; the novel lifting appliance is suitable for passenger car bodies with arc side windows, and convertible and semi-convertible sightseeing buses; the lifting requirements of passenger car bodies of almost all structures can be met approximately. Moreover, due to the arrangement of the U-shaped support device, the stability of the passenger car body when the passenger car body is lifted up is enhanced; friction between the lifting belts and the skin of the passenger car body is avoided. Furthermore, manual moving is avoided during the lifting process, so that the labor efficiency is greatly improved, and the potential safety hazard is reduced.

The invention provides a replacement method of a coiler mandrel. The method comprises a step of hoisting out an old mandrel and a step of reassembling a new mandrel. Research and on-site investigationand measurement find that a coil stripping trolley can still move for 2.1 meters toward the driving side under in the normal gate position, the distance can completely ensure that most part of a mandrel can be pushed out of a coiler rack, the hoisting requirement is met, and tedious dismounting when a coiler is moved out and complicated debugging when the coiler is moved back are omitted. Accordingly, a special tool used for supporting the mandrel to move when the coil stripping trolley horizontally moves the mandrel is mounted on the coil stripping trolley and is matched with an overhead crane, the purpose of replacement by moving out the mandrel under the assistance of the coil stripping trolley is achieved, and the mandrel replacement difficulty and strength are greatly reduced.

The invention discloses a high-lifting force lifting mechanism of cab side window glass of a bulletproof vehicle. The lifting mechanism comprises a micro motor, a pedestal, and a speed reducer of a pair of worm wheel and worm which are mutually meshed, wherein the micro motor is fixedly arranged on an outer side of the pedestal; the output shaft of the micro motor is inserted into a side hole of the pedestal; and the worm wheel and the worm are positioned in the inner cavity of the pedestal, and the worm is arranged on the output shaft of the micro motor. The lifting mechanism also comprises a screw rod, a nut, a screw rod sleeve and a joint, wherein the screw rod is fixedly connected with the worm wheel by a coupling band; the nut is screwed to sleeve the screw rod; the screw rod sleeve is sleeved on the peripheral wall of the nut in a tight fit way, and positioned at the upper end of the nut; and the joint is fixedly arranged at the upper end of the screw rod sleeve and connected with the window glass. The lifting mechanism has the advantages of small volume, light weight, simple structure and the like, and can completely meet the lifting requirement of the bulletproof glass.

An application method of modeling sand substituting blocks in casting of large cast steel is characterized in that a large cast steel casting technology adopts modeling sand substituting blocks to substitute parts of modeling sand in founding molding to reduce the sand-to-iron ratio and improve the modeling sand permeability, and the modeling sand substituting blocks are waste molten steel casting products with any shape. The application method comprises the following steps: 1, determining the structure, the shape and the dimension of the modeling sand substituting blocks according to the characteristics of the cast steel and the specifications of a sandbox; 2, molding through adopting a routine technology, and using the waste molten steel to cast the modeling sand substituting blocks; 3, marking the disposing positions of the modeling sand substituting blocks in the sandbox; 4, using the modeling sand substituting blocks to substitute parts of the modeling sand in the founding molding of the large cast steel; and 5, opening the sandbox after the casting of the large cast steel is completed, and collecting the modeling sand substituting blocks for later use. The method has the advantages of reduction of the dosage and consumption of the modeling sand, cost reduction, reduction of the weight of the modeling sand, convenience in operation, improvement of the permeability of the modeling sand due to spaces in the modeling sand substituting blocks, and guaranteeing of the quality of casting products.

The invention relates to a portable cable terminal lifting device, and is used for lifting a cable terminal porcelain bushing. The device comprises a telescopic tripod, a winch and a fixed pulley, wherein the telescopic tripod is used for providing supporting and adjusting height; the winch can be adjustably fixed on one supporting leg of the telescopic tripod so as to realize lifting; and a steelsling is wound on the fixed pulley, one end of the steel sling is connected to the winch, and the other end is connected to the to be lifted cable terminal porcelain bushing. Compared with the priorart, the device has the advantages of being convenient to transport and labor-saving, the lifting requirements of the height of the terminal are met, a machine head of a crane can rotate by 360 degrees, and the base is firm.

The invention discloses an adjustable lifting bracket device for a buried single-column lifting machine. The device comprises a single-column lifting machine body, the upper end of the single-column lifting machine body is fixedly connected with a rectangular block, the two sides of the rectangular block are fixedly connected with stressed steel pipes respectively, the stressed steel pipes are movably connected into corresponding sliding bases in an inserted mode, the sliding bases are arranged in corresponding saddles, an electric push rod is installed in each saddle, the movable ends of the electric push rods are fixedly connected with the rectangular block, the two ends of each saddle are each provided with an opening U-shaped groove, a drawing base is hinged into each U-shaped groove through a rotating shaft, each drawing base is connected with a bracket through a second electric push rod, each bracket comprises a U-shaped support, a support sliding base is arranged in each drawing base, each U-shaped support is movably installed in the corresponding support sliding base, and a cushion block is arranged on the upper side face of the tail end of each bracket. The adjustable lifting bracket device for the buried single-column lifting machine is novel in structure, stale in running and capable of achieving bracket adjusting and control, meeting lifting requirements of various vehicle types and meeting the using requirement.