8results about How to "Smooth shifting" patented technology

This invention discloses a rapid detection device for the planar runout of the end face of medium and large bearings, comprising a base and a turntable. The top wall of the turntable serves as a placement surface, and several slots are evenly distributed along the circumference of the turntable on the placement surface. Each slot is formed from the edge of the turntable towards its center. A clamp is movably mounted in any three slots, arranged in a triangular pattern. Each clamp has an arc-shaped contact surface at its starting end for contacting the outer peripheral wall of the bearing race under test. Each clamp is equipped with a fastening structure for securely connecting the clamp to the corresponding slot and an adjustment structure for adjusting the relative height between the clamp and the turntable to accommodate bearing races of different thicknesses. The base is equipped with a detection element for detecting the planar runout of the bearing race end face. This invention solves the problems of existing bearing planar runout detection equipment, such as complex structure, poor adaptability, easy damage to the bearing surface, inconvenient disassembly and assembly, and low detection efficiency.

A stepless speed change pole transmission type speed changer comprises a driving cone pulley assembly, a driven cone pulley assembly and a transmission steel belt, and the driving cone pulley assembly and the driven cone pulley assembly are each formed by coaxially and fixedly connecting a fixed cone pulley and a movable cone pulley assembly and are connected through the steel belt; the movable cone pulley assembly is composed of an internal gear, a movable cone pulley, a partition plate and a cone pulley support, the cone pulley support is a gear shaft fixedly connected with the fixed cone pulley, the internal gear is a cylindrical gear, first internal teeth meshed with the cone pulley support are arranged on the hole wall of a center hole of the internal gear, and the outer side of one end of the internal gear extends in the axial direction to form an oil cylinder. A partition plate with an oil hole is inserted into the oil cylinder, and the other end of the partition plate is connected with the movable cone pulley. The large-torque transmission device has the beneficial effects that the structure is simple and reasonable, the problem of slipping sometimes during large-torque transmission is effectively solved through the mode that the inner gear and the outer gear are meshed, and the functions of smooth gear shifting and smooth large torque are achieved.

The invention discloses a synchronous regulation and control type bridge swivel construction intelligent control system and a construction method.The system comprises a swivel construction device, a swivel monitoring module and a swivel control module, and the swivel construction device comprises an annular friction disc, a guide supporting device and an annular guide rail arranged on a bridge body support bearing platform; the annular friction disc is coaxially sleeved on the periphery of the axle body support turntable, a friction liner is arranged on the inner wall, and a gear ring is arranged on the outer wall and is driven by an electric driving device; the guide supporting device is arranged at the bottom of the annular friction disc, the lower end of the guide supporting device can slide along the annular guide rail, the rotation monitoring module monitors the rotating speed of the annular friction disc and the rotating disc in real time, and the rotation control module regulates and controls the electric driving device according to the obtained rotating speed. Uniform bearing and low-friction driving are combined through the annular friction disc, synchronous and accurate regulation and control of the rotating speed of the bridge body are achieved through PLC intelligent control, and the problems of dynamic balance keeping, posture real-time and accurate control and the like of large-tonnage bridge body rotating construction are effectively solved.

The invention belongs to the technical field of constructional engineering construction machinery, and particularly relates to an oblique traction in-place tool and a using method. Comprising a plurality of first connecting lugs arranged on the surface of a steel ball body, a plurality of second connecting lugs fixed to the spherical exhibition hall and traction assemblies arranged between the first connecting lugs and the second connecting lugs, guide wheel sets are arranged on the two sides of the second connecting lugs at intervals, and traction cables are arranged on the guide wheel sets; one end of each traction cable is connected with a winch installed on the spherical exhibition hall, the other ends of the traction cables are jointly connected with the corresponding traction assemblies, and each traction assembly comprises a fixed lock head corresponding to the first connecting lug, an adjustable lock head corresponding to the second connecting lug and a steel inhaul cable arranged between the adjustable lock head and the fixed lock head. By the adoption of the technical scheme, the problem that a worker needs to continuously adjust stress balance of a steel ball due to the fact that an existing steel inhaul cable deforms after traction is completed can be effectively solved.

This utility model discloses a dual-power switching mechanism, a transfer case, and engineering machinery, including a cylinder, a piston sleeve, a meshing sleeve, and a bearing. The cylinder has a hollow structure with at least one air inlet on its annular circumferential surface. The piston sleeve is arranged in the cylinder and can move axially within it. The meshing sleeve is embedded in the piston sleeve. The bearing is arranged between the opposing circumferential surfaces of the piston sleeve and the meshing sleeve. The meshing sleeve can rotate circumferentially within the piston sleeve but cannot move axially. Two rotating shafts are inserted through two coaxially arranged openings in the cylinder. After air is introduced through the air inlets, the piston sleeve drives the meshing sleeve to reciprocate within the cylinder, disengaging and connecting the two rotating shafts at their joints, thereby achieving power transmission between the two shafts. This utility model's power switching mechanism utilizes the principle of reciprocating piston movement within the cylinder, and features two air inlets for gear shifting, making operation convenient and smooth.

The invention relates to the technical field of hydraulic pressure, in particular to a control mechanism for a rotary hydraulic device, which comprises an oil port A, an oil port B and a speed change valve, the speed change valve comprises a speed change valve core and a speed change channel, and a speed change valve cavity is arranged at the end part of the speed change valve core and is used for controlling the speed change valve core to move between a first speed position and a second speed position; the control valve is communicated with the oil port A and the oil port B and comprises a control valve core, and a load valve cavity is formed in the control valve core; when high-pressure oil enters the oil port, the control valve element is at the initial position, the variable-speed valve element is arranged at the first speed position, and the control valve element is switched to the control position, the high-pressure oil is introduced into the variable-speed valve cavity through the variable-speed channel from the control valve, the variable-speed valve element moves to the second speed position, the high-pressure oil enters the load valve cavity and acts on the control valve element, and when the pressure reaches a set value, the variable-speed valve element moves to the load valve cavity. And the control valve element is pushed back to the initial position, so that the variable-speed valve element moves back to the first speed position. The technical problems that in the prior art, the speed needs to be switched manually, and the speed cannot be adjusted automatically are solved.

A bicycle independent gearshift includes a box, a toothed disc, a gearshift component and a gearshift handle mounted on a handlebar. The box is fixed at the joint of a frame vertical tube and a rear lower fork, and the toothed disc is mounted on a crank on the left side of the bicycle. A gearshift wheel is arranged at the upper left side of the box and connected with the gearshift handle through a gearshift line. An input wheel is arranged at the lower left side of the box and connected with the toothed disc through a transmission member. An output wheel and a supporting arm are arranged at the right side of the box and connected with a freewheel of the bicycle through a transmission member. The gearshift component is mounted in the box and includes a gearshift gear, a gearshift disc and a gearshift member. The gearshift gear and the gearshift disc are axially engaged to change a transmission ratio. The gearshift member is provided with a buffer structure to ensure the convenience and smoothness of gearshift. The invention has simple structure, low cost and long service life. It is not only suitable for human-powered bicycles and tricycles, but also suitable for pedal driving systems of electric vehicles or moped, and can be used in mechanical gearshift occasions in other fields.

The utility model provides a permanent magnet synchronous turbine gear motor for an elevator, belongs to the technical field of elevators, and solves the problem that the conventional similar motor is easy to vibrate during operation. The motor comprises a sports car shell and an outer cover fixed with the sports car shell, and an integrally formed gear motor shell is fixedly connected in the outer cover. The speed reduction motor shell is provided with a speed reduction cavity and a motor cavity which are perpendicular in axis and communicated with each other, the outer side face of the motor cavity abuts against the outer cover, and at least two fixing columns protrude out of the outer side of the speed reduction cavity and are fixed to the outer cover. A stator, a rotor and a motor shaft are arranged in the motor cavity, one end is connected with a motor end cover, and an encoder is arranged outside the end cover; a speed reduction shaft and a speed reduction gear are arranged in the speed reduction cavity, and the speed reduction gear is in meshing transmission with the motor shaft. The speed reducing motor is compact in structure and stable in connection, vibration of the speed reducing motor in the operation process can be effectively reduced, and the operation safety and reliability of the elevator are improved.