32results about How to "Appropriate tightness" patented technology

The invention discloses a constraining device. The constraining device comprises an information collecting part and a constraining part, wherein the information collecting part is used for acquiring the action information of a user, and the constraining part is used for carrying out the tightening, loosening or position adjustment according to the action information of the user collected by the information collecting part. The constraining device provided by the technical scheme of the invention is used for carrying out scientific prejudgment on the behavior of the user, constraining is carried out in good time, so that the physical and psychological injuries caused to the user by the long-term unnecessary constraining are avoided, meanwhile, the body is in the functional position and hasthe appropriate degree of tightness, so that the comfort level of the user is guaranteed, and secondary injuries are prevented.

The invention discloses an impact adjustable internal puller, which comprises a handle rod, an adjusting rod, an impact hammer and a clamping claw component, wherein the handle rod is constituted by a hollow circular tube; the front end of the handle rod is welded with a supporting frame, and the rear end of the handle rod is provided with a handle; the root part of the handle is welded with a fixed disc; the supporting frame consists of a left lug seat and a right lug seat; the impact hammer is sleeved on a polished rod part of the handle rod; the clamping claw component consists of a left pulling claw, a right pulling claw, and a tension slide block and a tension spring which are arranged between the left pulling claw and the right pulling claw; the middle part of the tension slide block is provided with a threaded hole; the adjusting rod is constituted by an iron stick and is penetrated in the handle rod; the front end of the adjusting rod is provided with a threaded head, and the rear end of the adjusting rod is provided with a hexagon nut; the threaded head at the front end of the adjusting rod is screwed with the threaded hole on the middle part of the tension slide block; and the hexagon nut at the rear end of the adjusting rod is pressed against an orifice at the rear end of the handle rod. The product is smooth to operate, convenient and easy to use, fast to disassemble, time-saving and labor-saving and is suitable for disassembling bearings of various specifications.

The invention discloses a constant tension filament feeder for a nylon monofilament. The constant tension filament feeder comprises monofilament pan heads, motors, input pulleys, output pulleys, weight pulleys, sensor groups, input sensors, output sensors and controllers, wherein the nylon monofilament is wound inside the monofilament pan heads and connected with the motors in a transmission manner; the nylon monofilament sequentially passes through the input pulleys, the weight pulleys and the output pulleys and is fed to a nylon molding machine after being led out from the monofilament pan heads; the input sensors detect the rotating speeds of the input pulleys; the output sensors detect the rotating speeds of the output pulleys; each sensor group at least comprises an upper limit sensor and a lower limit sensor, and the controllers are connected with the motors and control the rotating speeds of the motors according to signals of the input sensors, the output sensors and the sensor groups, so that the weight pulleys are between the upper limit sensors and the lower limit sensors. Compared with the prior art, constant static tension can be achieved in a pulley weighting manner by control, so that the product quality is ensured.

The invention provides a nylon or polyester covering spandex method for yarn-dyed, knitted and piece-dyed fabrics. The steps are: 1) pouring yarn: pouring the nylon or polyester raw yarn into an aluminum tube for a covering machine; 2) parameters Settings: Set parameters such as drafting gear, feeding gear, crimping gear, etc. 3) Spandex covering: Air humidity is 60‑75%, yarn density is 0.35‑0.55g / cm 3 , covering machine spindle speed 8000‑16000 rpm, drafting line speed 18‑25m / min, yarn crimp rate 89‑96%, covering twist 350‑900 twists, draft ratio 2.0‑3.6 times, wrapping Yarn speed 15-27m / min, nylon or polyester denier 20D-200D, covered yarn elasticity 60-75%, tension 9-25cN; 4) Lifting head: the spindle passes through the pre-drafting roller, the feeding roller, etc. Finally, the center line is the same with the ring guard, and the cradle is dropped to complete the yarn wrapping.

The invention relates to a production process of cotton pulp for cellulose triacetate, in particular to a simple production process of cotton pulp using cotton linter as a raw material; in the whole pulping process, the wastewater COD discharge is as low as 20250-25050mg / l, so that the environmental pollution and sewage treatment pressure can be reduced; on the conditions of stable polymerization, high whiteness and alpha cellulose content, uniform fiber length and proper compactness, the product has low content of methylene dichloride extract and metallic ions, low ash content and low dust, thus being applicable to the industry for producing cellulose triacetate.

The invention relates to a high-power storage battery, and particularly discloses a nickel-hydrogen elementary battery as well as a storage battery provided with the nickel-hydrogen elementary battery. The nickel-hydrogen elementary battery comprises an outer insulating sleeve, a diaphragm and a pair of positive and negative plates, wherein the positive and the negative plates are basebands, the surfaces of which are coated with active materials corresponding to positive and negative electrodes; the nickel-hydrogen elementary battery is characterized in that the upper end part or the lower end part of the baseband serves as a tab, and the other part serves as a coating surface; the diaphragm, the size of which is matched with that of the coating surface, is arranged between the positive plate and the negative plate; the coating surface is formed on the opposite side of the two tabs and extended from the two tabs and wound to form a cuboid body; and the outer insulating sleeve is woundaround the periphery of the cuboid body.

The invention relates to an outer speed change mechanism of an electric bicycle. The outer speed change mechanism of the electric bicycle mainly adopts the structure that a one-way device is arranged between a large fluted disc and a crank shaft; the one-way device is driven by cranks to drive the large fluted disc to perform unidirectional rotation so as to enable a rear wheel, the larger fluted disc and a chain to keep rotation at the same rotational speed; besides, a sensing device is used for sensing the size of the rotating speed of the real wheel, the large fluted disc or the chain; and once the rotating speed is too low, an electronic derailleur stops move, during which a rider can not realize gear shift by using a manual control method or an automatic control method, so as to ensure that a shift cable can remain in a appropriate tightness, and avoid the situation of chain falling at the same time.

A breathing mask comprises a support unit, a mask unit, an adjusting unit, a connecting unit and a headband unit. The support unit comprises a forehead fixing support and an extending frame. The mask unit comprises a cover frame and a mask pad; the adjusting unit comprises an adjusting sheet arranged at the upper end of the cover frame and an inserting pin arranged on the extending frame; the connecting unit comprises pivoting portions located below left and right sides of the extending frame, pivoting rods located below the left and right sides of the cover frame and buckle seats located below the left and right sides of the extending frame; the headband unit comprises a band and a pair of bucklers. The connecting unit is capable of achieving the double purposes of pivoting the support unit and the mask unit and connecting the headband unit and the support unit, the proper tightness of the headband unit can be maintained through the position of the connecting unit, and the effects of facilitated usage and simple appearance can be achieved.