157results about How to "Increase tension" patented technology

A thrust ball head-sleeve pipe assemblage for car is composed of a ball head of thrust rod and a sleeve pipe, which are coupled in corrugated mode. Its assembling technology includes such steps as corrugating the coupled part of said ball head of thrust rod, machining the coupled part of sleeve pipe to become thin wall, setting up the pressing parameters of hydraulic press, setting up the heating power and time of MF heater, heating the thin-wall part of sleeve pipe, inserting it in a dedicated riveting apparatus, turning on hydraulic press to rivet the sleeve pipe with the ball head of thrust rod, and cooling.

The invention discloses a weighing apparatus intelligent calibrator which includes a base, a pit on the base for holding a weighing apparatus, and a calibration unit on the top of the base. The calibration unit includes a support column vertical to the top of the base, a lever hinged to the top of the support column, a vertically downward force-transferring column fixedly connected to the end of the lever close to the weighing apparatus, and a pressure sensor fixedly and horizontally disposed at the bottom of the other end of the lever. A hydraulic cylinder is disposed right under the other end of the lever when the lever is arranged horizontally. The distance from the hinge joint of the support column and the lever to the pressure sensor is greater than the distance from the hinge joint of the support column and the lever to the force-transferring column. The weighing apparatus intelligent calibrator applies force to the weighing apparatus from the outside, solves a problem that a traditional calibrator is directly pressed on the weighing apparatus and affects the accuracy of a calibration result, achieves a purpose of accomplishing a great task with little effort by using the unequal-arm level, reduces the bearing capacity of the pressure sensor of the calibrator, and is prolonged in the service life. Further, the bottom of the level is designed to be in a latticed shape suchthat the tension and pressure of the lever is increased.

The invention relates to a multifunctional hoisting bisecting stage act curtain towing mechanism comprising a support body, a motor, a speed reducer and a towing wheel. The motor and the speed reducer are fixedly mounted on the support body, and the motor drives the towing wheel to rotate by the speed reducer; an output shaft of the speed reducer is horizontally arranged, and the vertical towing wheel is rotatably mounted on the output shaft; a driven fluted disc clutched by gaining electrons and another driven fluted disc clutched by losing electrons are respectively coaxially fixedly mounted at both sides of the towing wheel, a driving fluted disc clutched by gaining electrons and the output shaft of the speed reducer are fixedly mounted, and a driving fluted disc clutched by losing electrons and a chain wheel which is rotatably mounted at the output shaft end are fixedly mounted. The invention has the advantages of compact structure and smart design, can be mounted at one end of an act curtain guide rail support, not only saves stage floor area, but also can simultaneously take effect along with a hoisting mechanism to realize the variety of the towing mechanism, can realize the automatic and manual control functions, the automatic tightening function of wire ropes and the high-precision position signal collection and control functions, thereby being the stage act curtain towing mechanism with higher novelty.

The invention discloses high-elasticity thermal insulation cotton and a method for producing the same. The cotton is prepared by mixing the following raw materials in percentage by weight: 75 to 85 percent of terylene fiber and 15 to 25 percent of low-melting point complex fiber, wherein the titer of the terylene fiber is between 0.6 and 2.75D. The method comprises the following steps that: the two raw materials are put in cotton mixing equipment for even mixing; the mixed raw materials are combed into a planar flake fiber web by a combing machine; the planar flake fiber is paved into a laminar fiber web by a web paving machine; the top surface and the bottom surface of the laminar fiber web are acupunctured by a needle loom to prepare a fiber blanket; the fiber blanket is put in an oven for thermal fusion, taken out and naturally cooled at an ambient temperature of between 10 and 30 DEG C, so that the high-elasticity thermal insulation cotton is obtained. The high-elasticity thermal insulation cotton produced by the method greatly improves the strength of the thermal insulation cotton; and under the condition of equal thickness, the strength of the high-elasticity thermal insulation cotton is 6 to 9 times higher than that of the prior thermal insulation cotton; moreover, the high-elasticity thermal insulation cotton is also excellent in elasticity, permeability and the like.

The invention provides a guitar chord fingering device. The guitar chord fingering device comprises a shell, a frame, a plurality of electromagnetic devices, string contact pressers and an electrical control unit, wherein the shell is provided with chord keys; the frame is fixedly arranged in the shell; the electromagnetic devices are fixedly arranged on the frame; each electromagnetic device corresponds to a different pitch of each string of a guitar; the string contact pressers are driven by the electromagnetic devices; the chord keys are electrically connected with the electrical control unit; and the electrical control unit controls the electromagnetic device at the corresponding pitch to move according to a chord fingering spectrum corresponding to the chord keys so as to drive the string contact pressers to press strings. The invention also provides the guitar provided with the guitar chord fingering device. The guitar chord fingering device and the guitar have the advantages of good universality, simple structure and capability of avoiding interference among parts in various chord processes.