258results about How to "Guaranteed force balance" patented technology

The invention discloses a replacement device for shield cutters. The replacement device comprises a fixed part, a moving part and two gates, wherein the fixed part is provided with a containing cavity, two sides, in a first direction, of the containing cavity are open, the moving part is movably arranged in the containing cavity in the first direction, the shield cutters are suitable for arranging on one side, in the first direction, of the moving part, the two gates are arranged on the moving part and arranged on a second direction which is perpendicular to the first direction, the two gates can move opposite to each other in the second direction, the two gates are constructed to separate from each other during the moving part moves towards one side of the moving part in the first direction, and when the two gates moves close to each other after the moving part moves towards the other side of the moving part in the first direction, two sides of the containing cavity are separated. The replacement device for the shield cutters has the advantages that arrangement space of the replaceable shield cutters in a shield cutter disc is effectively saved, and stress-balance and whole strength of the shield cutter disc are guaranteed to a certain extent.

The invention provides a lifting force measuring device and equipment and method for measuring the actual locking rail temperature of a jointless track. The lifting force measuring device comprises a bracket, a transverse shaft, a back-pulling mechanism, a flexible lifting mechanism and a tension sensor. The fixed end of the back-pulling mechanism is in shaft connection with the bracket, and the movable end of the back-pulling mechanism is connected with one end of the flexible lifting mechanism; the transverse shaft is arranged on the upper portion of the bracket, the flexible lifting mechanism is wound around the transverse shaft, and the other end of the flexible lifting mechanism is provided with a clamp; the back-pulling mechanism pulls the flexible lifting mechanism to slide on the transverse shaft and drives a jointless track rail to move upwards; the tension sensor is arranged at the upper end of the clamp. By the adoption of the method, according to the equipment, the actual locking rail temperature of the jointless track can be obtained by measuring rail lifting force, rail lifting displacement and rail temperature, wherein the rail lifting force is measured by the lifting measuring device, the lifting displacement is measured by a displacement sensor, the rail temperature is measured by a temperature sensor. Accordingly, the actual locking rail temperature of the jointless track can be accurately measured.

The invention discloses an automobile seat backrest with a middle armrest. The left end and the right end of an armrest cup holder are hinged to a cup holder rotating shaft. The left end of the cup holder rotating shaft is fixedly supported by an armrest cup holder limiting support. The armrest cup holder limiting support limits the armrest cup holder and is fixed to a large armrest cup holder bracket in a welded mode. The large armrest cup holder bracket is longitudinally welded into a backrest framework. The right side of the cup holder rotating shaft is also provided with an armrest cup holder limiting support and a large armrest cup holder bracket, and the armrest cup holder limiting support and the large armrest cup holder bracket on the right side of the cup holder rotating shaft are in symmetry with the armrest cup holder limiting support and the large armrest cup holder bracket on the left side. A shape supporting steel wire is arranged in back foam in an integrally foam forming mode. The position, close to an armrest cavity, of the steel wire is bent into a U shape along the upper edge, the lower edge and one side edge of the armrest cavity, and the steel wire is embedded into the back foam. The situation that the automobile seat backrest tilts as a result of imbalance between left stress and right stress will not happen, and the problem that soft foam at the edge of the armrest cup holder collapses after being coated with a shell fabric is solved.

The invention discloses a super-large downwards-pressing type corrugated paper box printing machine provided with an air-suction auxiliary paper feeding device. The machine comprise a pressing and printing roller and a printing roller which are arranged on the upper side and the lower side of corrugated paper; the printing length of the printing roller ranges from 4.5 m to 6 m; the air-suction auxiliary paper feeding device is further arranged above the corrugated paper and comprises an air suction chamber, an air suction chamber mounting frame and an auxiliary paper feeding mechanism; the air suction chamber is mounted on the printing machine through the air suction chamber mounting frame and is located on the outer side of the pressing and printing roller; and the auxiliary paper feeding mechanism is arranged in the air suction chamber. The machine is designed for printing of large or super-large corrugated paper boxes, the corrugated paper feeding process stability of the printing machine is improved by adding the air-suction auxiliary paper feeding device on the basis that the size of a printing platform is substantially increased, the corrugated paper is kept stable all the time to pass through the printing area between the printing roller and the pressing and printing roller and is not affected by the size, and the pressure stability between the corrugated paper and a printing plate is guaranteed, so that the printing quality is guaranteed.