45results about How to "The average gear ratio is accurate" patented technology

A shift control device for a continuously variable transmission includes a downhill control module that executes downhill control in which a gear ratio of the continuously variable transmission is corrected to a low side during driving downhill, and a gear ratio holding module that, in the case where a braking operation is detected while downhill control is executed, the gear ratio of the continuously variable transmission is held at the gear ratio at the time when the braking operation is started.

The invention relates to a testing device for a rotary valve pneumatic actuator. The testing device for the rotary valve pneumatic actuator can respectively carry out no-load tests, load tests, seal tests, strength tests and action life tests on a single-action rotary valve pneumatic actuator and a double-action rotary valve pneumatic actuator, the device is overall a digitized closed-loop control system, the rotary valve pneumatic actuator which is long in service life and stable is tested, testing precision is high, stability is high, testing is convenient, detection speed is high, and the whole testing device is simple in structure and low in maintenance cost.

The invention discloses an intelligent full-hydraulic power catwalk which comprises a supporting arm, a lifting leg, a pulley, a drill rod positioning mechanism, a plurality of active outriggers, a twisting machine, a twisting machine sliding rail, a control box, a ramp, outriggers, an overturning plate, a foundation support, a waterpower decoring device and a hydraulic station. The ramp is connected with the foundation support via a bolt, the twisting machine and the twisting machine sliding rail are mounted on one side of the foundation support, the waterpower decoring device is mounted on the twisting machine, the drill rod positioning mechanism and the overturning plate are arranged on the foundation support, the pulley is arranged on the supporting arm, the active outriggers are arranged on two sides of the foundation support, the hydraulic station supplies power to a system, and operation of the system is control by the control box. By the aid of the intelligent full-hydraulic power catwalk, processes including joint and throw rod connecting, hole bottom power connecting and disconnecting and water power rock coring can be integrated, twisting and water power decoring can be automatically finished without removal of a drill rod, technical requirements for drilling deep well coring are met, construction fields are greatly reduced, labor intensity is lowered, and working efficiency of a drilling system is improved. Since the power catwalk is fully hydraulically controlled, stepless speed change can be realized, transmission mechanism is simplified, and adaptability and reliability of the power catwalk are improved.

The invention relates to a pipe-pulling pattern-twisting machine. The pipe-pulling pattern-twisting machine comprises a platform frame, a platform frame panel, two sets of transmission chains, a traction mechanism, a pattern-twisting mechanism, a driving motor and a control panel. The traction mechanism and the pattern-twisting mechanism are located on the platform frame panel. The driving motor is installed inside the platform frame. One set of motor chain power device is responsible for twisting patterns, and the other set of motor chain power device is responsible for pulling pipes. Manufacturing of the patterns is completed through optimized procedures. The procedures are controlled to be ungraded, the machine can be made to operate well and stably, and all kinds of patterns can be manufactured. Pattern-twisting machining of various kinds of blank pipes can be achieved through one set of the device, multiple sets of molds do not need to be prepared, the application amount of mold materials is decreased, and the working efficiency is improved.

The invention discloses a stretcher leveler chain drive lifting pin mechanism with guiding. The stretcher leveler chain drive lifting pin mechanism with the guiding comprises a hanging bracket, a bolt cylinder, compression columns, a crosshead, lifting pins, two roller chains, two fixed chain wheels, two moving chain wheels, a chain wheel guide rail, copper sliding plates and hanging bracket guide rails, wherein the two fixed chain wheels are respectively and fixedly arranged at both sides of the crosshead; the two moving chain wheels are arranged on the hanging bracket above the fixed chain wheels through a chain wheel shaft; one ends of the two roller chains are respectively and fixedly arranged on the two fixed chain wheels; the other ends of two the roller chains respectively bypass the moving chain wheels to be respectively connected onto the lifting pins; the chain wheel guide rails are respectively and fixedly arranged at the outer sides of the fixed chain wheels; the hanging bracket guide rails are respectively arranged on pillars of the hanging bracket; the copper sliding plates are arranged on surfaces of the hanging bracket guide rails; and the chain wheel guide rails are respectively abutted with the copper sliding plates on the surfaces of the hanging bracket guide rails. The stretcher leveler chain drive lifting pin mechanism with the guiding has the beneficial effects that elastic sliding or slipping does not occur during chain drive, so that the average drive ratio is stable and accurate, and the synchronism and the work efficiency of the movement of every lifting pin can be improved; the deflection of a piston rod is avoided; the service life of the hydraulic cylinder is prolonged; and chain drive tension is low, so that pressure acting on the chain wheel shaft is also low.

The invention discloses a chain-type circular stacking device, which comprises a chain driving device, an object-carrying device, an object-carrying flexible trolley device, and an object-carrying car device. The beneficial effects of the present invention are: using the chain drive, the average transmission ratio is accurate, the work is reliable, the efficiency is high, the transmission power is large, and the load capacity is strong; the use of the chain drive device to cooperate with the transport device can realize the cycle of uninterrupted storage of goods, such as It can realize the separation of the load-carrying engineering vehicle and the lifting car, and connect with the loading platform through the connecting track to complete the cargo transportation action of the load-carrying engineering vehicle; the uninterrupted warehouse storage improves work efficiency, and the operation is simple, reducing the number of people operating on the post, creating Higher efficiency; the flexible trolley passes through the track, reducing unnecessary rigid impact; most of the parts are common parts, which are easy to replace and match after damage, so the service life is longer.

The invention discloses a multilayered fabric weaving machine. The multilayered fabric weaving machine comprising a let-off mechanism, a shedding mechanism, a weft insertion mechanism, a beating-up mechanism, and a rolling mechanism, wherein the shedding mechanism comprises a shedding frame; a plurality of shedding cylinders, a plurality of upper connecting plates, an upper amplifying plate, an upper mesh plate, a harness wire, a lower mesh plate, a lower amplifying plate, a plurality of lower connecting plates are arranged on the shedding frame; every shedding cylinder is connected with the corresponding upper connecting plates; the lower end of every lower connecting plate is provided with a returning spring; and the lower end of the returning spring is fixed at the bottom end of the shedding frame. After being connected with harness cords respectively, the upper end and lower end of every harness wire are respectively crossed through the upper mesh plate and lower mesh plate, the upper amplifying plate and the lower amplifying plate through the harness cords, then every group of harness cords are connected with the corresponding connecting plate; through the direct connection between the harness cords and the harness wires, the space limit caused by a heald frame in the traditional weaving machine is avoided; thereby weaving of the multilayered fabric is realized under a certain opening.

The invention relates to a centrifugal fluidized bed drying and sorting system and a drying and sorting method, and belongs to the technical field of mineral drying and sorting devices. The technicalproblems of small processing capacity, high energy consumption, poor continuity and the like existing in existing wet mineral drying and sorting devices are solved. The system comprises a pre-drying unit and a drying and sorting unit, the pre-drying unit comprises a first air distribution chamber, a first mandrel and a first air distribution cylinder provided with a plurality of first holes, the first air distribution cylinder comprises a first rotary drum, the drying and sorting unit comprises a second rotary drum, a second air distribution cylinder, a second air distribution chamber and a second mandrel, the area between the second rotary drum and the second air distribution cylinder is a sandwich area, and the second rotary drum and the second air distribution cylinder are provided witha plurality of second holes, and the air quantity of the first air distribution chamber is larger than that of the second air distribution chamber. A pre-drying centrifugal fluidized bed and a dryingseparation centrifugal fluidized bed are adopted for tandem type design, the mineral is subjected to primary drying and then is subjected to subsequent drying and sorting, and the purpose of dry dehydration and upgrading of the mineral is achieved.