30results about How to "Change speed ratio" patented technology

The present invention relates to an automatic spinning new end forming method and its equipment. The roving machine utilizes the coder positioned at the drafting portion position to detect the full-yarn length when the bobbin can be fulled, and makes the roving machine spin to a certain length in low speed, after the roving is spun to a certain length, makes the roving machine operate in low speed, at the moment makes the spindle rail stop lifting movement and makes the yarn be in said height position, winds 2-3 turns of halching and makes the spindle rail be quickly lowered to form large thread pitch wind so as to make the roving do not take-off in its transportation process; changes the speed ratio of flywer and roller so as to reduce roving twist, and obtain undertwisted roving, and when the ultralowering of spindle rail is made to place, the yarn is stretch-broken to produce fuzzy fibre whose length can be suitable for secondary automatic spinning new end formation.

The invention discloses a multi-functional integrated type hydraulic cylinder. The multi-functional integrated type hydraulic cylinder comprises a main cylinder barrel, a main cylinder cover, a barrel-shaped main cylinder piston rod, a rapid cylinder guide sleeve, an isolating ring, a three-section card key and a main cylinder guide sleeve and is characterized in that: a first oil port, a second oil port and a third oil port are formed on the main cylinder barrel; a fourth oil port and a sixth oil port are formed on the main cylinder cover; a positioning cylinder guide sleeve is matched with the inner wall of the left end part of the main cylinder barrel; the inner wall of the positioning cylinder guide sleeve is matched with the outer wall of the main cylinder guide sleeve; the left end part of a barrel-shaped rapid cylinder piston rod is matched with the inner wall of the barrel-shaped main cylinder piston rod; the right end of the barrel-shaped rapid cylinder piston rod is connected with a locknut in a matching way; a rapid cylinder head is connected with the inner wall of the left end part of the barrel-shaped main cylinder piston rod in a matching way; a low-pressure oil inlet pipe is fixedly connected in the barrel-shaped rapid cylinder piston rod; and the right end of the low-pressure oil inlet pipe is a fifth oil port. The multi-functional integrated type hydraulic cylinder has the advantages of compact structure, high circulating operation speed, high working pressure, large thrust force of a working condition, high power density and convenient installation.

The invention relates to a lathe sliding box; a transverse knife feeding gear and a longitudinal knife feeding gear are installed on front and rear sides of a middle gear on a wheel shaft; the middle gear, the transverse knife feeding gear and the longitudinal knife feeding gear are respectively engaged with an annular gear; a control handle shaft is parallel to the wheel shaft; a handle capable of driving the control handle shaft to rotate or slide forwards and backwards is installed on the control handle shaft; the annular gear is rotationally connected to one end of a sliding link rod, and the middle part of the sliding link rod is installed on a sliding link rod shaft that is parallel to the control handle shaft; a sliding link rod driving plate is fixedly installed on the control handle shaft and provided with a sliding link rod slot extending along the circumference, and the other end of the sliding link rod is inserted into the sliding link rod slot. A concave arc cam is installed on the control handle shaft, the rear end face of the concave arc cam is provided with a concave arc groove in which a link rod pin is inserted, and the outer end of the link rod pin is hinged to the upper end of a half nuts control link rod. According to the sliding box, interlocking of the transverse knife feeding gear, the longitudinal knife feeding gear and the half nuts is achieved by the control handle.

The invention relates to a planetary reduction stepless variable speed coupling box of a new energy automobile. The planetary reduction stepless variable speed coupling box comprises a main drive loop formed by motors, planetary reduction mechanisms and a differential mechanism, wherein the motors are connected with sun wheels of the planetary reduction mechanisms through rotor frames to be used as power input, and planet carriers of the planetary reduction mechanisms are connected with the differential mechanism to be used as power output drive wheels. The planetary reduction stepless variable speed coupling box of the new energy automobile further comprises an auxiliary drive device for driving inner gear rings of the planetary reduction mechanisms to rotate. Compared with the prior art, the main drive loop can carry out gear switching of different speed ratios on a planet gearbox according to the working conditions of the inner gear rings, and therefore the whole gear shifting process is continuous, stable and free of impact force, so that stepless variable speed of the automobile in climbing, heavy-load starting, common-load driving at the moderate speed and light-load driving at high speed can be achieved.

A magnetic transmission is provided with an inner rotor (1), an outer rotor (2), and a magnetic field-modulating stator (3) disposed coaxially between the inner rotor (1) and the outer rotor (2). Theinner rotor (1) is provided with a first magnet row (11) and a second magnet row (12) that are disposed in parallel in the direction of the central axis (A) and disposed at different pitches along thecircumferential direction. The outer rotor (2) is provided with a magnet row that is disposed along the circumferential direction. The magnetic field-modulating stator (3) is provided with a first magnetic body row (31) and a second magnetic body row (32) that oppose the first magnet row (11) and the second magnet row (12), respectively. Moreover, by moving the inner rotor (1) and the magnetic field-modulating stator (3) in the direction of the central axis (A) while maintaining the opposing relationship between the first magnetic body row (31) and the second magnetic body row (32) and the first magnet row (11) and the second magnet row (12), the position of opposition between the outer rotor (2) and the first magnet row (11) and second magnet row (12) is varied continuously.

The invention discloses a stepless speed change structure for planetary gears, which has the advantages of high torque bearing capability, no slipping, simple structure, less parts, low manufacture and maintenance costs, superior long service life and wide speed change range, and can be applied to heavy-duty vehicles, large-scale vehicles and mini-type vehicles. Based on the structural characteristics of the planetary gears, the stepless speed change of power input and output speeds is realized when the revolution ratio between a gear ring and a sun gear is changed by changing the rotational speed of a planetary gear rack. The stepless speed change structure comprises the gear ring, the planetary gear rack and the sun gear, wherein the gear ring is connected with the power input shaft of a vehicle engine; the sun gear is connected with the power output shaft; the planetary gears are mounted on the planetary gear rack and are connected with a power adjusting control device capable of changing the speeds of the planetary gears; and the power adjusting control device comprises a control power input shaft and a control gear arranged at one end of the control power input shaft.

The invention relates to a method for producing gears, wherein in a first step a set of teeth (6) is formed by means of a skiving wheel (4) rotationally driven by a tool spindle (2) in a workpiece gear (1) rotationally driven synchronously thereto by a workpiece spindle (5), wherein the workpiece spindle (5) and the tool spindle (2) are at an axis intersection angle ([Alpha]) to each other and theadvancement occurs in the tooth-flank extension direction, and wherein in a second step at least some teeth of the set of teeth (6) are machined by means of a tooth-machining tool (7). A combined tool is used, in the case of which the tooth-machining tool (7) and the skiving wheel (4) are fixedly connected to each other. Between the two steps, the combined tool (3) remains connected to the tool spindle (2) and the workpiece gear (1) remains connected to the workpiece spindle (5). Between the two steps, merely the relative position of the tool spindle (2) in relation to the workpiece spindle (5) and the rotational speed ratio of the two spindles (2, 5) are changed.

The invention provides an automatic gear shifting method of a hydraulic transmission system, aiming at solving the problem that the efficiency of the hydraulic transmission system changes with loads. A combination mode of step regulation and stepless regulation is adopted, wherein the step regulation plays the role of crude regulation, and the stepless regulation plays the role of fine regulation. A mechanical transmission is adopted for crude regulation, and a magnetic powder clutch or a device with similar function is adopted for fine regulation. By a certain algorithm, a hydrotransmitter can be caused to work at a high-efficiency point, thereby achieving the purposes of improving efficiency and saving energy.

The invention discloses an intelligent glass fiber reinforced plastic automatic production machine. The machine comprises a base, a first sliding way is arranged in the top face of the base in a penetrating manner, a mover is arranged in the first sliding way, and a left machine body is fixedly arranged on the mover. The intelligent glass fiber reinforced plastic automatic production machine is simple in structure and convenient to use, automatic production of glass fiber reinforced plastic paste spreading work is completed through gear transmission, and compared with existing common hand molding in China, the machine has the advantages that the mechanical degree is higher, the production efficiency is higher, it can be guaranteed that paste spreading materials of all layers are the same,and the process performance of products is improved. The machine is provided with a sliding matching block, the matching block can be controlled through a control rod, the movable distance of the matching block is changed, and therefore the rotating speed ratio of a main shaft to a threaded shaft is changed, the purpose of changing the number of layers of materials spread with the paste every timeis achieved, self-changing can be conducted according to user requirements, and product diversity is improved.

The invention discloses a patella replacement integrated drilling device and belongs to the technical field of medical instruments, the patella replacement integrated drilling device comprises a guider, a holding rod, a drilling assembly and a power connecting rod, the holding rod is arranged on the guider and fixedly connected with the guider, the drilling assembly is arranged on the guider and rotationally matched with the guider, and the power connecting rod is detachably connected with the drilling assembly. According to the patella replacement integrated drilling device, a first gear drives three second gears to rotate, and the three second gears drive three drilling heads to rotate, so that the patella is drilled and does not need to be drilled for three times, and drilling is faster and more stable.