31results about How to "Accurate pull" patented technology

The invention relates to a steel strand jacking force measuring device that includes strain meter, two inner sleeves, two outer sleeves and round steel. The two inner sleeves movably connect, and has round hole in center. The round steel is locating in the hole. Two ends of round steel have protuberance, whose diameter is larger than that of the hole. Strain gauge is stuck on round steel. The wire connects to strain gauge through the hole on inner sleeve. And the two ends of inner sleeve connect to the two ends of outer sleeve. Hole used for passing through steel strand is set in the center of sleeve. Cone cavity is set at the back of hole. And cutting off the steel stand, it could be connected to the cone clamping piece in cavity. The strain gage and steel strand is on the same axis. The invention has high accuracy, safety and reliability. It could realize monitoring the whole process of the pulling and using of the steel strand.

The invention discloses a tensioning instrument for screw detection and application thereof. The tensioning instrument comprises a mechanical module, a data collection module and a data analysis module; the mechanical module is used for tensioning a screw and adjusting the tightness degree of a nut; the data collection module is used for collecting pressure, ultrasonic flight time and temperature data which are generated when the mechanical module tensions the screw; the data analysis module is used for receiving the data collected by the data collection module and generating a length-tensile force relation curve of the screw. By using the tensioning instrument, current pre-tightening force of the screw can be accurately and conveniently tested out, and a basis is provided for determining whether tensioning supplementing is needed or not subsequently; meanwhile, after tensioning supplementing of tensile force of the screw is completed, the tensioning supplementing effect can be assessed according to a testing result.

One aspect of the present invention can include an operating lever of a vehicular seat provided at a front face, an upper face, or a back face of a seat, including a seat cushion and a seat back, and a first lever and a second lever. The first lever and the second lever are axially supported pivotably to each other on one end sides in length directions. An other end side in the length direction of the first lever is axially supported pivotably to the seat and is connected to a lock mechanism capable of changing a state of an attitude of the seat. The other end side in the length direction of the second lever is formed as an operating portion. The attitude of the seat can be operated while bending the first lever in two stages around axial shafts on sides of both ends in the length direction of the first lever by operating an operating portion of the second lever in a direction of being remote from the seat.

A pair of swimming goggles of the present invention comprises a pair of left and right lens frames which respectively include an outer surface and an inner surface and receive a pair of lenses, a bridge member disposed at the upper edges of the inner sides of the left and right lens frames, and a head strap means disposed at the outer sides of the left and right lens frames. The feature of the present invention is that the head strap means at least includes a first thread, a second thread, and a pair of adjustment fasteners disposed at the first and second threads, wherein the first thread is disposed at the upper position of the outer sides of the left and right frames, and the second thread is disposed at the lower position of the outer sides of the left and right frames. Thus, the adjustment fasteners properly adjust the first and second threads thereby providing different application lengths for the first and second threads and providing a desired pull force such that the upper and lower edges of the lens frames are adjusted to comfortably contact with the periphery of the eye holes and a desired refraction effect of the lenses in water is achieved.

The invention discloses a put-away machine of a blanking robot. The put-away machine comprises a machine frame, a correcting assembly, a puller assembly, a cut-off die, a conveying assembly, a variable-pitch sucker assembly and a blister box. A material belt is input through the correcting assembly, penetrates through the cut-off die and enters the puller assembly to be pulled out. The correctingassembly can freely adjust the correcting position according to the width of the material belt and can also support the material belt so that the product deformation caused by the drooping of the material belt can be prevented. The puller assembly can automatically send the to-be-stamped material belt into a servo cam stamping die, labor is saved, and the pulling speed is higher and more stable. The conveying assembly is used for conveying out cut-off stamped products from the lower side of the cut-off die and providing the product suction space for the variable-pitch sucker assembly. The variable-pitch sucker assembly moves the products to the blister box, and the put-away efficiency of the put-away machine is improved. By means of the put-away machine, the automatic steel material pulling and sending function and the material belt automatic stamping and put-away function are realized, the automation degree is high, cost is saved, and efficiency is improved.

The invention relates to a system for automatically controlling the stability of a temporary cable erection support. The system comprises a support body, a hydraulic system and a PLC control system, all inclined pulling wires are connected through the hydraulic system so that a linkage joint adjustment effect can be achieved, then the tensile force of all the inclined pulling wires can be independently or simultaneously controlled through the PLC control system, the system is easy and convenient to install, the inclined pulling wires and ground anchors can be connected only through a hydraulic cylinder, the hydraulic cylinder is controlled to stretch or retract by a hydraulic valve so that the tensile force of the inclined pulling wires can be adjusted, the responding speed is high, the tensile force is accurately controlled, and the whole set of equipment can be installed fast.

The invention relates to a large liquefied petroleum and natural gas boat pond test horizontal thrusting function simulation device which comprises four vertical supports, two guide rods, two linings for micro ball guide, balls, two fixed pulleys, two ropes, a plurality of weights with different masses, two tension sensors, a computer and a protractor. Every two vertical support are in a group, the two groups of vertical supports are symmetrically and fixedly arranged on banks on the two sides of an FLNG model. Each guide rod is fixedly installed on the tops of the corresponding two vertical supports on one side of the corresponding bank and is sleeved with one lining for micro ball guide, and each ball is arranged between the corresponding guide rod and the corresponding lining for micro ball guide. Each lining for micro ball guide is fixedly connected with one fixed pulley, each rope is wound on the corresponding fixed pulley, one end of each rope is connected with the weights, and the other end of each rope is connected with a boat bottom horizontal thrusting action point through one tension sensor.

The invention provides a guide rope tension measuring device, relates to the field of mechanical measurement and aims at solving the problem that the existing measuring device cannot accurately measure coring force and smoothly guide the coring force to a sample under complex selenographic environments and the multi-force composite effect. The guide rope tension measuring device provided by the invention comprises a base, a rotating shaft, a rotating block, a pressure sensor, pretightening springs, pretightening screws, a guide sleeve, a guide shaft and a guide rope through hole, wherein the base and a side end of the rotating block are fit with each other through the rotating shaft, an upper end surface of the rotating block is fixed at an upper part of the base through two pretightening screws, the pretightening springs are arranged on the pretightening screws. The guide rope tension measuring device is used for the mechanical measurement of the guide rope.

The invention discloses a tension sensor static calibration device and method in weightless environment. The device comprises a chassis and a shell mounted on the chassis; a dial is fixed on the chassis through a supporting column, and a graduated scale is arranged on the upper surface of the dial; a rotating shaft penetrates through the chassis and the dial and is connected with the chassis and the dial through bearings; the lower end of the rotating shaft is provided with a first gear; a servo motor is mounted on the chassis, a second gear is arranged on an output shaft of the servo motor, and the second gear is perpendicular to and meshed with the first gear; the rotating shaft is connected with a fine tuning arm; the fine tuning arm is positioned above the dial, and a distance is formed between the fine tuning arm and the dial; one end of the fine tuning arm is connected with one end of a tension sensor to be calibrated through a string, the other end of the tension sensor is connected with a standard mass balance weight through a string, a fine tuning knob for adjusting the telescopic length of the fine tuning arm is arranged on the fine tuning arm, and a balance beam is arranged on the opposite side of the fine tuning arm. The problem that a conventional calibration method is not suitable for a weightless environment is solved.

The invention discloses a temporary rapid installing support for cable erection. The temporary rapid installing support for cable erection comprises a square-arch-shaped frame body, inclined pull wires, ground anchors, hydraulic cylinders, a multi-way valve and a hydraulic station, wherein the inclined pull wires are connected with the top corners of the square-arch-shaped frame body and are fixed to the ground through the ground anchors, and the hydraulic cylinders are arranged between the inclined pull wires and the ground anchors 3 and are connected with the hydraulic station through the multi-way valve. The pull force of each pull wire can be independently controlled, it is only required that the pull wires and the ground anchors are connected together through the hydraulic cylinders and the hydraulic cylinders are controlled by the multi-way valve to stretch or contract to adjust the pull force of the pull wires, and the whole temporary rapid installing support for cable erection is easy, convenient and fast to install, high in corresponding speed and accurate in pull force control.

An efficient compact form factor for the hand powered mechanically driven flywheel electric generator for charging a smartphone or other personal device, in which the electric generator including a rotor and a stator, in which said rotor includes a plurality of alternating permanent magnetic fields arranged in a circular array such that a series of poles are established about the rotors circumference.

The invention relates to a spring force measuring device for a mechanics experiment in high school physics and a force measuring method. At present, the teaching tool for a high school physics laboratory is relatively single, especially for the experiment device for force measurement, force measurement in multiple directions can not be done, that is, the pressure and the tension in each directioncan not be measured, and effects of the mechanics experiment are directly influenced. The device comprises a disc (1); the middle part of the disc is provided with a square groove; the square groove is internally provided with a gear (4); the gear is engaged with a rack in a groove rack (3) with a rack; the upper surface and the lower surface of the groove rack are fixed with an upper spring (9) and a lower spring (7); the upper spring and the lower spring are connected with the inner side surface of a support frame (2) and are fixed; the top of the support frame is connected with an upper sliding rod (12); the upper sliding rod sequentially passes through a given-force adjusting sleeve (11) and a zero reset adjusting sleeve (10); and the zero reset adjusting sleeve is connected with the disc through thread. A spring force measuring device for a mechanics experiment in high school physics is provided.

The invention relates to a ship position tracking system capable of being used for long-distance transporting and shipping equipment. The ship position tracking system comprises a falling pipe lifting control device (1), a telescopic falling pipe (3), a lifting cable (5) and a lifting pulley (6), wherein a lower end discharge port (8) of the telescopic falling pipe (3) is hermetically connected with a ship cabin; the lower end of the lifting cable (5) is connected with the discharge port (8); and a tension sensor (2) is also arranged between the falling pipe lifting control device (1) and the telescopic falling pipe (3) and is connected with a sensing pulley (7). According to the ship position tracking system, the height of the lifting cable is controlled by using the tension sensor according to variation in tension of the lifting cable during variation in ship position, so that the lower end discharge port of the telescopic falling pipe is hermetically connected with the ship cabin all the time, and material loss and dust pollution caused by separation of the discharge port and the ship cabin due to variation in water level and wind wave and the bumping of the ship cabin are prevented.

The invention relates to an optical fiber tension measuring device and system, and in particular relates to the field of tension detection. The optical fiber tension measuring device comprises a light source, a first stress part, a second stress part, an elastic part, an optical fiber and an optical detector, when tension needs to be detected, the tension acts on the first stress part and the second stress part of the optical fiber tension measuring device, under the action of the first stress part and the second stress part, the elastic part deforms, the elastic part acts tension and pressure on the optical fiber to enable the optical fiber to deform, and then the transmission loss of the optical fiber is changed, so that the light intensity of an optical signal emitted through the optical fiber is changed, and the emergent light intensity of the optical signal is detected through the optical detector; and according to the corresponding relationship between the light intensity and the to-be-measured tension, the to-be-measured tension is acquired.