152 results about "Mechanical traction" patented technology

The invention discloses a trenchless built-in sleeve pipeline repairing method and equipment. The method includes utilizing two adjacent inspection shafts as operation space under the condition that the road surface is not excavated, adopting a pipeline to be repaired as a carrier, conveying short pipes into the pipeline to be repaired, dragging the short pipes to advance via a traction device, gradually completing hitting combination and connection between a latter short pipe and a former short pipe in an advancing process, realizing assembly of the short pipes in the pipeline to be repaired and finally forming a new pipeline; and then filling a gap between the new pipeline and the pipeline to be repaired in a grouting manner, leading the sleeved-in new pipeline to be stabilized and to be closely combined with the pipeline to be repaired to realize common pressure resistance strength, and accordingly realizing repair to the pipeline to be repaired. The equipment comprises a mechanical traction system and a hydraulic power system. The trenchless built-in sleeve pipeline repairing method and the equipment completely realize the trenchless technology, and have the advantages that continuousness is realized when the pipeline to be repaired crosses a road, construction time is short, engineering comprehensive manufacturing cost is low, influence to traffic is quite low, and the like.

The invention provides a steam catapult for a carrier-borne aircraft and a catapulting method thereof. The steam catapult comprises a take-off runway, a pulley, a pulley channel, a main traction winch, an auxiliary traction winch, a catapulting cylinder and a catapulting programmable controller, wherein the pulley channel is formed in the middle of an aircraft carrier ski-jump take-off runway or a horizontal take-off runway; the pulley is arranged in the pulley channel; the main traction winch and the auxiliary traction winch are arranged in a cabin below the take-off runway; the steel cables of the main traction winch and the auxiliary traction winch are connected with the front and rear ends of the pulley respectively; and the catapulting cylinder is arranged at the bottom of the pulley channel positioned at the starting point of the take-off runway. The catapult take-off of the carrier-borne aircraft is realized in pneumatic and mechanical traction modes, the defects that the conventional steam catapult has large volume, high energy consumption and short service life and is difficult to process are overcome, and a brand-new catapult for the carrier-borne aircraft is provided for aircraft carrier construction in China.

The invention provides a cutting wire tensity and temperature measurement and control device for an EPS (Expanded Poly Styrol) slab cutting machine, belonging to the field of machining. The cutting wire tensity and temperature measurement and control device is used in non-manual installation regulation and temperature control of cutting wires for solving the problems of large installation error and human injury due to broken wires. The cutting wire tensity and temperature measurement and control device for the EPS slab cutting machine is composed of a cutting wire set tension automatic maintaining and adjusting mechanical traction mechanism, a cutting wire tension sensor, a cutting wire temperature sensor, a control traction mechanism and a cutting wire working temperature control circuit. The cutting wire set tension automatic maintaining and adjusting mechanical traction mechanism is composed of a step motor, a supporting plate, a lead screw, a movable disk, an optical axis and a wire hanging plate; and the tension sensor comprises a step motor, a lead screw, a movable disk, an optical axis, a pressure sensor, an F contactor and a PT100 temperature sensor installed at one side of a cutting wire of the traction mechanism. The invention has the advantages of automatically maintaining the cutting wire tension and the cutting wire working temperature and adjusting errors to maintain the cutting wire at the optimal working state, improving the cutting quality of EPS slabs and eliminating potential safety hazards caused by manual installation.

The invention discloses a traffic mechanical traction device. The traffic mechanical traction device comprises a first fixed block body, a first bearing is fixedly embedded at the right side of the upper surface of the first fixed block body, a first cavity is arranged inside the first fixed block body, first slide grooves are formed in both the inner top wall and the inner bottom wall of the first cavity and are located at the left side of the first bearing, a first connection pillar is placed inside the first cavity and is located at the left side of the first bearing, first slide blocks matched with the first slide grooves are fixedly connected to both the top and the bottom of the first connecting pillar and are connected into the first slide grooves in a clamping mode, and first springs are fixedly connected to the side surfaces, away from the first bearing, of the first slide blocks. The traffic mechanical traction device has the effect of making a second pull ring rotate longitudinally and has the advantage of being suitable for multiple vehicle models, the traction device has the buffering effect and the effect of rotating transversely, and the occurrence of the situation that the angle is limited when the traction device makes a bend is prevented.

Therapeutic, tilting, split table, traction apparatus for home use manually operated by the user to relieve back pain and/or stretch, lumbar/spine/exercise back muscles/and provide mechanical traction with person in supine position. Apparatus having a upper tilting frame (one end being back and head support and opposing end being a rolling or sliding carriage), pivotally hinged on base frame with approximately 13 kilograms of upper body weight offset unto the back support to offset the effect of the 13 kilogram spring used to retract rolling or sliding carriage and keep body weight balanced for ease of use. Lower body is anchored by pelvic or waist harness to rolling or sliding carriage, As person releases latch, frame tilts (head lower then feet) and simultaneously pushes rod and roller assembly (hinged to under back support and under rolling carriage) up the 35 degree incline track pushing carriage away from back support creating traction/distraction force. Upper body is anchored by way of incline, gravity, skin on back directly in contact with padded vinyl back support. Removable handles attached to base are used by person to control tilt and traction force. As amount of tilting and traction force are simultaneous and easily controlled by the person, unlimited amount of techniques as far as traction/distraction, may be applied, intermittently, using an on-off cycle, or continuously.

A lightweight folding motorized chair with mechanical traction steering and braking. A folding frame supports the traction wheels and the drive system with hinged frame members configured to mechanically fold the control levers, wheels and periphery components into a substantially flat configuration for easy storage in small spaces. A mix of weight saving choices including: structural materials; mechanical traction control system; lithium ion battery; and overall lightweight design keeps the folding motorized chair at a size and weight that a person can lift into the trunk of a car.

The invention discloses a sealing dipping pultrusion system device for producing an optical fiber reinforced core and a preparation method. The device is characterized in that a heat moisture removing device, a seal pressure dipping device, a heat molding mold, a mechanical traction device and a rolling reel device are arranged at the right side of a guide creel in sequence, the upper end of a transparent sealing glue storage tank is connected with a glue inlet through a 1# valve and a pipeline; the lower end of the transparent seal glue storage tank is connected with the seal pressure dipping device through a 2# valve and a pipeline; the bottom of the seal pressure dipping device is connected with a glue outlet through a 3# valve and a pipeline; and the tail end of the seal pressure dipping device is connected with a vacuum pump through a 4# valve and a pipeline. The device provided by the invention is simple in structure, pollution-free for atmosphere, harmless for bodies of workers, and the harmful gases in glue material cannot be volatized; the product is strong in corrosion resistance, resistant to rust, free from nitrogen damage, does not affect the signal propagation performance of optical fiber, is insensitive to electric shock and long in service life. The product has no air gap, is large in density, high in strength and excellent in performance, thus, the device can be widely used for the manufacturing industry of optical fiber communication.

A modifiable pillow having a main pillow module, which serves as the foundation or base for the application of other modules adapted for various purposes is provided. A mechanical traction assembly may also be operatively associated with the main pillow module for apply mechanical traction to a user of the main pillow module.

The invention discloses a mechanical traction device with a buffer function. The mechanical traction device with the buffer function comprises a traction shell, a first elastic gasket, a first moving shaft, a first spring, a first end cover, a first pre-tightening nut, a first connecting shaft, a first bearing, a first fixing part, a first pull hook, a fixing screw, a second elastic gasket, a second moving shaft, a second spring, a second end cover, a second pre-tightening nut, a second pull hook, a second connecting shaft, a first fixing part and a second bearing. The mechanical traction device with the buffer function has the advantages that the mechanical traction device is simple and reasonable in structure and complete in function; during traction transport of box stands, the first pull hook and the second pull hook are connected between box bodies, and the first spring and the second spring are capable of buffering during start and braking, so that transport stability is guaranteed; pre-tightening force of the first spring and the second spring can be adjusted through the first pre-tightening nut and the second pre-tightening nut, so that different traction force requirements are met; the first pull hook and the second pull hook can rotate effectively through the first bearing and the second bearing, and accordingly the box bodies can turn more flexibly during traction is ensured.

The invention discloses a daylighting slippage skylight system comprising a supporting beam fixedly arranged at the top of a building. At least two sets of mechanical traction transmission devices are fixed on the supporting beam. Two ends of the supporting beam are connected with the mechanical traction transmission devices by daylighting tops. Each mechanical traction transmission device comprises a motor and a chain wheel arranged on a motor spindle, wherein the chain wheel is provided with a chain. A steel frame is connected with the chains by connectors arranged at the bottom of the steel frame. The bottom of the steel frame is also provided with a pulley which is embedded on a guide rail on the supporting beam. Each daylighting top comprises a supporting bracket fixed on the steel frame and a glass plate arranged on the supporting bracket. Compared with existing turnover-type and lifting-type daylighting tops, the system has a simpler and more reasonable structure. A moved daylighting top is overlapped with the daylighting tops fixed on the supporting beam so that a top surface can be fully opened and better effects in terms of smoke discharge and ventilation can be achieved. Moreover, the daylighting top overlapping also prevents the daylighting tops from being turned over by a strong wind so that the safety of the system is further improved.

The invention provides a four-change-one-increase high efficiency cultivation method for fresh eating sweet potatoes in plains of the China northern potato region. The method comprises the following steps that an excellent variety is selected; health seedlings are selected; ridging, pipe layering and film overlaying are carried out; close planting is carried out earlier appropriately; water and fertilizers are managed accurately; appropriate chemical control is implemented; vine removing and harvesting are carried out mechanically; and early harvesting and grading are carried out in proper time. In the cultivation method, drip irrigation is used according to needs of scaled household farms, the wheelspan of a power machine matching mechanical traction is taken into full consideration, a single-ridge-single-row manner is changed to a large-ridge-double-row manner, rely on natural rainfall is changed to accurate water supply, fertilizer broadcasting is changed into quantitative fertilizer supply, excessive chemical control is changed into staged green chemical control, and the sweet potato plantation density is increased; thus, the survival rate in the seedling stage and the rate ofcommercial potatoes are improved, the climate risk in sweet potato production is reduced, the high efficiency cultivation method with the core of four-change-one-increase for the fresh eating sweet potatoes is formed on the basis of integration of water and fertilizer drip irrigation, and production of the fresh eating sweet potatoes enters a mechanical, facility, engineering and simplified stage.

The invention relates to a method and a device of whole course uniformly-accelerated mechanical traction high-speed take-off of a shipboard aircraft and aims at solving the problems that in the prior art, auxiliary take-off power is little, take-off speed is slow, and cost is high. A high-power winch is utilized for traction of take-off of the shipboard aircraft. The high-power improved winch arranged at the head of a ship drags, in the forward direction, the shipboard aircraft to take off. A low-power universal winch arranged at the tail portion of the ship drags, in a reverse direction, a hook system or a reciprocating car mactched with the shipboard aircraft to restore to an original position. The high-power improved winch is improved in the following way: some gears of a speed reducing box are eliminated, the rotating speed of a roller is increased, and the roller is changed into a roller with a larger diameter. According to the device, the high-power winch is arranged under a deck and drags the hook system or the reciprocating car through steel wire ropes, and then the hook system or the reciprocating car drives the shipboard aircraft. Due to adoption of the high-power independent-power winch, high-speed take-off of any heavy-type and large-scale airplane full of oil, bombs or various materials is ensured, the take-off is high in quality, low in cost, safe, free of pollution, free of interference, and onboard fuel is saved. The device has the advantages of low cost, little investment, high energy utilization rate, little mechanical equipment, and the like, and is far better than an electromagnetic catapult and a steam catapult.

The invention discloses a traffic mechanical traction device with automatic adjustment function, in accordance with the present invention, The first slider comprises a first casing, an upper surface and a lower surface of the inner wall of the first casing are provided with a first sliding groove, two first sliding grooves are slidably connected with a first sliding block, and the opposite surfaces of the two first sliding blocks are fixedly connected with each other through a first connecting plate, and two first sliding sleeves are clamped on the side surfaces of the first connecting plate.The traffic mechanical traction device with automatic adjustment function relates to a traffic mechanical traction device with an automatic adjustment function, through the first rotational shaft, First spring, steering mechanism, third axis of rotation, a fit between the second spring and the second rotational shaft, The invention not only prevents the rear-end collision between the faulty vehicle and the consignment vehicle due to inertia and other reasons, but also makes the consignment vehicle and the faulty vehicle have a certain buffer force, thereby reducing the impact force of the faulty vehicle on the consignment vehicle due to inertia or failure to brake in time, so that the faulty vehicle and the consignment vehicle can be well protected.

In order to solve above technical problems, the invention provides a navigation system used for shaft fracture intramedullary reduction. The system comprises a marrow cavity endoscope, an image display module, a computer, an electromechanical control module, and a mechanical traction frame. The image display module is electrically connected between the marrow cavity endoscope and the computer. The electromechanical control module is electrically connected between the mechanical traction frame and the computer. The marrow cavity endoscope acquires image signals of proper positions, and transmits the image data to the computer through the image display module. After the image data is displayed, analyzed and processed on the computer, a displacement instruction is transmitted to the electromechanical control module. The electromechanical control module drives the mechanical traction frame to complete corresponding displacement operation. The system is characterized in that operation is simple, axial alignment and rotation alignment are realized, X-ray radiation damages are prevented, the system monitors reduction state in real time, and is high in precision, and can maintain a satisfied closed reduction state for a long time.

The invention relates to a preparation method of a carbon fiber waveguide. The preparation method comprises the following operation steps that (1) a waveguide core mould easy to demould is manufactured according to a conventional method; (2) eight lath-shaped carbon fiber sheets are manufactured according to the shape of the channel-steel-shaped waveguide and pasted on a copper foil in sequence, and thus a composite piece of the carbon fiber sheets and the copper foil is obtained; (3) one side of the copper coil of the composite piece is wound on the waveguide core mould in a wrapping mode according to the design requirement, gaps are filled with carbon fibers, a blank is obtained after curing, the carbon fibers are laid and pasted on the blank, and a preformed piece is obtained after curing; and (4) the preformed piece is demoulded through a demoulding auxiliary tool in a mechanical traction mode, and thus the carbon fiber waveguide with an inner cavity being provide with the continuous and reliable copper foil is obtained. The preparation method has the advantages that a copper foil layer is complete, uniform and continuous, the effects of the metal layer preparation processes of electroplating, spraying and the like are avoided, the waveguide core mould can be reused, and the method is particularly suitable for preparation of the composite material waveguide with a complex cavity structure.

The invention relates to a system for automatically mounting and dismounting green tires by a robot. The system comprises a green tire storage vehicle, an entrance buffer region limiting track, a middle part buffer region limiting track, an exit buffer region limiting track, a green tire mounting-dismounting workbench, an automatic spraying machine, a traction device, plate-lifting devices and a control device with a control function, wherein storage plates are hinged on the green tire storage vehicle; the green tire mounting-dismounting workbench comprises a mounting-dismounting mechanical arm and a grabbing component; the automatic spraying machine is disposed at one side of the middle part buffer region limiting track; the traction device is slidably disposed at the outer side of the three limiting tracks; the plate-lifting devices are disposed on the two ends of the middle part buffer region limiting track; plate-lifting manipulators for plate-lifting operations of the storage plates are disposed on the plate-lifting devices. According to the system, the green tires are loaded and transported by using the green tire storage vehicle; mechanical traction operations are realized by using the traction device; the plate-lifting operation and the green tire mounting-dismounting operation by the green tire storage vehicle are completed by using devices such as the plate-lifting devices, the green tire mounting-dismounting workbench and the like which are disposed at connection positions of the tracks; the storage, transportation and spraying of the green tires are mechanically operated.

Disclosed are a tubular traction pressurization connecting rod control device and an outer-bone fixing device. The device is composed of a traction pressurization connecting rod, steel needle fixing clamps and steel needles. The traction pressurization connecting rod is composed of a full-thread connecting rod body, at least one sleeve pipe and nuts, wherein the full-thread connecting rod body is sleeved with the at least one sleeve pipe and the nuts are fixed at the positions, at the two ends of the sleeve pipe, of the full-thread connecting rod body. The steel needle fixing clamps are connected to the traction pressurization connecting rod, and the steel needle fixing clamps are composed of steel needle pressing pads, screwed hole gaskets, bases, screws, upper nuts and lower nuts. The screws sequentially penetrate through holes in the centers of the steel needle pressing pads, holes in the centers of the screwed hole gaskets and holes in the centers of the bases, the upper nuts are located on the steel needle pressing pads and connected with the screws through threads, and the lower nuts are located under the bases and connected with the screws through threads. The tubular traction pressurization connecting rod control device and the outer-bone fixing device are flexible to combine and convenient to operate, have the functions of static fixation, mechanical traction and pressurization, have very good fixing, anti-shearing and anti-rotating capacities, are applicable to spiral fractures, oblique fractures and intertrochanteric unstable fractures of shinbones and thighbones, and are especially applicable to outer fixation of comminuted fracture.

The invention discloses a multifunctional traction physiotherapy couch, and belongs to the technical field of rehabilitation equipment. The physiotherapy couch includes a console, a bed plate, a bed rack and a supporting leg; the bottom end of the bed plate is fixedly connected to the top end of the bed rack; the bottom end of the bed rack is fixedly connected to the top end of the supporting leg;and the bed plate is provided with a cervical traction mechanism, a lumbar massage mechanism, armpit positioning arms and a leg traction mechanism. The physiotherapy couch is designed according to body curvature and sets physiotherapy parameters through a human-computer interface, and mechanical traction and massage can be performed by utilizing the cervical traction mechanism, the lumbar massagemechanism and the leg traction mechanism; through the design of the cervical traction mechanism, fixing can be performed on the cervical vertebras of patients, and massage and preheating treatment can be performed on the cervical vertebras by utilizing a second vibration cylinder and silica gel heating sheets; and through the design of the lumbar massage mechanism, an arched waist pad can be attached to the cervical vertebras of the patients, and massage and preheating treatment can be performed on the cervical vertebras by utilizing a first vibration cylinder and a silica gel heating plate,so that blood circulation can be promoted.

The invention discloses a hybrid power elevator and a working method thereof. The hybrid power elevator comprises a lift shaft, an elevator guide rail, a lift car and a mechanical traction system dragging the lift car to ascend. The upper portion of the lift car is in sliding connection with a sealing cover. The sealing cover is in sealing fit with the wall of the lift shaft. A closed air storage space exists between the sealing cover and the wall of the lift shaft above the sealing cover, the space of the lift shaft below the sealing cover is communicated with the atmosphere, the top of the air storage space is provided with a vent valve, and the lift car is dragged through the difference of the air pressure above the sealing cover and the air pressure below the sealing cover during descending of the lift car. The lift car is dragged through mechanical power during ascending, running is stable, and the ascending height is not limited. The descending of the lift car relies on the gravity of the lift car and the difference of the air pressure above the sealing cover and the air pressure below the sealing cover, energy consumption does not exist basically, energy is saved, environmental friendliness is facilitated, cost is low, the descending speed of the lift car is controlled by air pressure all the time, and the situation of passenger casualties caused by rapid descending or ascending of the lift car due to fracture of a steel wire rope, failure of a traction mechanism and the like cannot occur.

The invention relates to a composition capable of inducing stem cells to secret cytokines and application thereof. The composition capable of inducing the stem cells to secret cytokines comprises thefollowing ingredients: 1-5 milligrams of vitamin A, 50-100 milligrams of glutamine, 0.5-2 milligrams of lysophosphatidic acid, and 0.01-0.1 milligram of icaritin. An induction medium can be formed byadding the composition into high-glucose-content DMEM; and the formed induction medium can be used for stimulating umbilical cord mesenchymal stem cells to secret cytokines. Particularly, being used in cooperation with appropriate mechanical-traction physical stimulation during induced culture processes, the induction medium is capable of further increasing amount of cytokines secreted by the umbilical cord mesenchymal stem cells. In addition, the composition avoids social ethical controversy by adopting the umbilical cord mesenchymal stem cells; moreover, the umbilical cord mesenchymal stem cells are relatively rapid in proliferation rate and low in immune rejection rate.