38results about How to "Adjust the size of the force" patented technology

The invention relates to a support frame, comprising a base, a permanent seat, a first sway brace, a second sway brace and a fixing plate. Effect of a four bar linkage which is shown as a parallelogram and made up via making use of the permanent seat, the first sway brace, an arranged connecting sheet and a knighthead comprises: when the first sway brace processes to turn and adjust angular position corresponding to the permanent seat, the second sway brace which is axially fixed on the top of the first sway brace can still keep an intrinsic angle of elevation with the first sway brace so as to make a fixity which is fixed on the fixing plate keep on the position of the intrinsic angle of elevation. Thereby, user can freely adjust the angle of the first sway brace corresponding to the permanent seat so as to adjust the position of the permanent seat up/down in the space. The invention has the advantages of that, the user can easily operate the fixity on the permanent seat, and when the user adjusts the angular position of the sway brace of the support frame, the fixity can still keep the intrinsic angle of elevation so that the invention is very suited for practicality.

The invention discloses a device and method for testing tensile and compressive creep of inter-hole rock bridges by using an expansion agent. The device comprises a rock sample for testing, wherein aplurality of small holes are processed inside the rock sample, the expansion agent is filled inside the small holes; a rock bridge is formed between two adjacent small holes, and distributed optical fibers, transparent mesh paper or stress monitoring points for measuring stress on the rock bridges are arranged in different regions of the rock bridges; steel plates are placed on both sides near therock bridges inside the small holes, and two adjacent steel plates are connected by steel bars. The method can monitor and measure various mechanical parameters and timely feedback on the force of the rock sample in real time, is simple in operation, low in cost and simple in structure, can be applied to quantity detection of tensile and compressive molds of rock samples of various shapes and sizes, and has a wide range of engineering practice significance and application prospects.

An embodiment of the invention discloses a paperbacked plasterboard edge sealing device which is arranged on two sides of a plasterboard. The paperbacked plasterboard edge sealing device comprises a rack, wherein an edge sealing band paper outlet device, a water supply device, a paper folding device, a positioning device and a cut-off device are arranged on the rack; the paper folding device comprises a paper folding board; the positioning device comprises an end part positioning roller, side positioning rollers and a positioning brush, the end part positioning roller is opposite to the end part of the plasterboard, the two side positioning rollers are opposite to two sides of the end part of the plasterboard; the positioning brush is in a U-shaped structure in the side direction and is fixed on the rack through a support frame. One group of edge sealing press rollers are adopted to realize the edge sealing positioning effect, the positioning brush is adopted to apply pressure to stickan edge sealing band on a board, three groups of edge sealing press rollers in the prior art are replaced, pressure of the plasterboard is reduced while a good edge sealing effect is realized, core air holes in the edge sealing position of the end part of the plasterboard are prevented from being damaged by pressing, and the paper taking-off phenomenon is prevented.

The invention discloses a device for edge sealing of a gypsum plaster board, and belongs to the technical field of mechanical equipment. According to the technical scheme, the gypsum board edge sealing machine is characterized by comprising a rack, an edge sealing belt paper outlet device, a water supply device, a paper folding device, positioning devices and a cutting-off device are arranged on the rack, the paper folding device comprises a paper folding plate, each positioning device comprises an end positioning roller, two side positioning rollers and a positioning brush, and the end positioning rollers are opposite to the ends of gypsum boards; and the two side positioning rollers are opposite to the two sides of the end of the gypsum board, the positioning brush can be seen as an inwards-concave structure in the side direction, the positioning brush is fixed to the rack through a supporting frame, a set of edge sealing pressing rollers are adopted to play a role in edge sealing and positioning, and then the positioning brush is adopted to apply pressure to adhere an edge sealing belt to the board. The pressure on the gypsum board is reduced while a good edge sealing effect isachieved, a board core air hole in the edge sealing position of the end of the gypsum board is prevented from being crushed, and the paper disengaging phenomenon is prevented.

The invention discloses a technology for avoiding wrinkling occurring in aluminum foil intaglio printing. The technology includes the following steps that 1 corona treatment is conducted on the two sides of a PET film (1); 2 the corona surfaces of the two sides of the PET film (1) are coated with polyurethane composite adhesives, and aluminum foil (2 and 3) is stuck to the surfaces of the polyurethane composite adhesives; 3 one layer of silicone protective film (5) is stuck to the surface of the aluminum foil (2); 4 ink (4) is printed on the other surface of the aluminum foil (3) through an intaglio printing rubber device, and drying treatment is conducted on the ink; 5 the silicone protective film is removed. The technology can effectively avoid the situation that the surfaces of the aluminum foil wrinkle after the ink is printed on the aluminum foil through the intaglio printing rubber roller device, and the technology is simple, low in cost and suitable for large-scale production.

The invention discloses a Hopkinson bar electromagnetic loading device and an implementation method, a stress wave loading device adopts a capacitor bank to provide instantaneous strong current for two magnetic field coils, a magnetic field is generated between the two coils, and the other capacitor bank provides instantaneous current for a force load. The force load with current is subjected to the action of electromagnetic force in a magnetic field, and the current flowing through the force load can be changed by changing the discharge parameters of the second capacitor bank, so that the magnitude and waveform of stress acting on the Hopkinson bar are changed. According to the invention, the stress of the Hopkinson bar can be flexibly adjusted, and the problem of stress wave generation in a complex loading mode is solved.

The invention provides a fixing frame used for correcting scoliosis. The fixing frame effectively solves the problems that in the process of treating scoliosis, the interchangeability of the fixing frame is poor, the fixing frame needs to be replaced, the manufacturing process is complex, and the applied force cannot be adjusted; the fixing frame comprises a slab, longitudinal plates are arrangedon the slab, and upright plates are arranged on the lower sides of the front and back ends each longitudinal plate; the upright plates and the longitudinal plates form U-shaped plates, first clampingplates are arranged at the front and back ends of each U-shaped plate, threaded holes are formed in the ends, placed in the U-shaped plates, of the first clamping plates, and first double-head bolts are arranged in the U-shaped plates; connecting rods are hinged to the sides, close to each other, of the lower ends of the two upright plates and are hinged to each other, a second double-head bolt isarranged between the two U-shaped plates, and cylinders are arranged at the two ends of the second double-head bolt; the fixing frame is ingenious in structure, the interchangeability of the fixing frame used for correcting scoliosis is effectively improved, the fixing frame can adapt to treatment of different stages, a supporting device does not need to be replaced, the applied force of the sickpart can be adjusted better, the adaptability of the fixing frame is wide, and the fixing frame can be conveniently manufactured in batches.

The invention discloses an unpowered exoskeleton. The unpowered exoskeleton comprises an exoskeleton body, a telescopic component and a connecting rod. The exoskeleton body is provided with a first side face of the exoskeleton body. The telescopic component is arranged on the first side face of the exoskeleton body. The telescopic component is provided with a first end of the telescopic component and a second end of the telescopic component. The connecting rod is arranged on the first side face of the exoskeleton body and provided with a through groove. The connecting rod is provided with a first end of the connecting rod and a second end of the connecting rod. The first end of the telescopic component is fixedly connected to the first side face of the exoskeleton body, the second end of the telescopic component is fixedly connected with the first end of the connecting rod, and the connecting rod is slidably connected with the exoskeleton body through the matching of the through groove and a first fastening component. The unpowered exoskeleton can assist a user to do exercise, the stress on the knee joints can be relieved when the user walks, the protection function on the knee joint is played, and the acting force applied to the user by the unpowered exoskeleton can be adjusted by adjusting the relative position of the first fastening component and the through groove.

The invention discloses a brocade silk yarn life tester, a brocade silk yarn life testing system and a brocade silk yarn life testing method. According to the brocade silk thread life tester, the brocade silk thread can be effectively prevented from being clamped, it can be guaranteed that swing of the brocade silk thread is highly consistent with swing of an actual use scene, meanwhile, the brocade silk thread can generate Ampere force under the action of a magnetic field to swing when current is input, and thus the life of the brocade silk thread is tested; the magnetic field intensity can be adjusted according to needs so as to adjust the stress of the brocade silk threads. According to the brocade silk yarn service life testing system, the service life measurement of the swing speed, the rotating speed, the radian, the angle, the load, the load current and the like of the brocade silk yarn highly conforming to the actual use scene can be realized, the alternate cycle test under more than two test conditions can be realized, and the service life testing precision of the brocade silk yarn is improved. According to the brocade silk yarn service life testing method, testing is carried out based on the brocade silk yarn service life testing system, traditional motor mechanical driving swing is abandoned, and high-precision testing that the height of the brocade silk yarn accords with the use scene can be achieved.

The invention discloses a quick exhaust valve with an overpressure protection function, which comprises a valve body, a valve cavity and a reversing mechanism arranged in the valve cavity, wherein the valve body is provided with a first valve port, a second valve port and a third valve port; the reversing mechanism divides the valve cavity into at least a first cavity and a second cavity which are separated from each other; the first valve port, the first cavity and the second valve port can be communicated to form an air inlet channel, the second valve port, the second cavity and the third valve port can be communicated to form an exhaust channel, and the first valve port, the first cavity and the third valve port can be communicated to form an overpressure protection channel; the reversing mechanism can directionally move or deform under air supply pressure and selectively communicate with the air inlet channel, the exhaust channel or the overpressure protection channel. The quick exhaust valve has the quick exhaust and pressure limiting functions, can save pressure limiting devices such as an overflow valve in a pneumatic system, and reduces complexity and cost of the system.

The invention provides a dystonia reliever and a use method thereof. The dystonia reliever includes a base, a first functional clamp, a mobile stiffener and a drive transmission mechanism; the first functional clamp includes two first half-clamp bodies arranged opposite to one side of the base, and the tail parts of the first half-clamp bodies and the base form rotating or moving connection; the mobile stiffener is connected to the tail parts of the two first half-clamp bodies of the first functional clamp; and the drive transmission mechanism includes a driving mechanism and a transmission mechanism, and two ends of the transmission mechanism are connected to the driving mechanism and the mobile stiffener respectively, wherein the mobile stiffener is driven by the driving transmission mechanism to move along the axial direction of the dystonia reliever to change the distance between the end parts of the two first half-clamp bodies of the first functional clamp. The dystonia reliever provided by the invention is simple in structure, convenient to use, easy to promote and low in cost, and is suitable for easing dystonia of muscle groups that control fine movement such as hands and feet.