125results about How to "Improve traction efficiency" patented technology

Magnetic circuit that has (a) a source of magnetic flux which includes an electromagnet or one or more permanent magnets, (b) at least two oppositely polarisable pole extension bodies associated with the magnetic flux source, the bodies being disc, wheel, roller or similarly shaped with an outer circumferential surface and held rotatable about respective axes of rotation, and (c) a ferromagnetic counter body which is arranged to cooperate with the pole extension bodies such as to provide an external flux path for the magnetic flux when in magnetic proximity or contact with the circumferential surface of the pole extension bodies, which is characterised in that the magnetic flux source is held stationary relative to the rotatable pole extension bodies.

The invention discloses a tractive carrying device of straight line inductive motor, which adopts single-side short junior straight line inductive motor to provide suspending/unloading and tractive power, wherein the single-side short junior straight line inductive motor consists of overlapping ferric core [31] and junior [3] of winding [32] in the ferric core grove on two sides of bulk; when the surface of junior [3] faces upwards, the low grade fixed on two sides of rail; when the surface faces downwards, it opposites the surface of motor junior [3]; the low grade is made of aluminium or copper long reacting board [4] with back displaying excellent magnetic conductive steel board [5]; the reacting board and steel board are fixed on the rail beam [6].

An improved rail system fuel tender for use with one or more railroad locomotives capable of transporting a plurality of fuel containers suitable for containing pressurized fuel and suitable for directly fueling the one or more locomotives. The improved fuel tender may be powered by the locomotives to increase tractive effort, and the fuel containers may be separately fillable and separately removable from the fuel tender.

The invention discloses equipment for enabling a copper pipe to pass through a fin of a condenser. The equipment comprises a support, as well as a push plate driving system, a copper pipe collector, a fin collecting disc and a traction device which are sequentially positioned on the support, wherein the copper pipe is placed on a supporting base of the copper pipe collector, and clearance layers formed between clapboards or partition posts are stacked; a push plate passes through the upper part of the supporting base which can reciprocate up and down so as to push the copper pipe into the fin hole of the fin collecting disc; meanwhile a draw rod enters into the fin hole from the other side of the fin collecting disc under the effect of a guide mechanism, so as to draw the copper pipe, and a drawing head is inserted into the opening end of the copper pipe; when the draw rod is retreated from the fin hole, the copper pipe is synchronously guided into the fin hole, after that, the push plate and the draw rod are reset, the upper-layer copper pipe orderly falls to the supporting base so as to be subjected to the next round of pipe passing. The equipment is simple in operation and high in stability and safety, and can be used for improving the pipe passing efficiency and the alignment accuracy, reducing the equipment stagnation period in a pipe passing process and reducing the human cost and the equipment loss.

The invention provides an electric tractor gravity center adjusting device which comprises a power battery, a power battery bracket, a gravity center horizontal-adjusting mechanism and a gravity center longitudinal-adjusting mechanism. The power battery is used for providing gravity required for gravity center adjusting; the power battery bracket is used for installing and fixing the power battery and providing anti-collision protection for the power battery; the gravity center horizontal-adjusting mechanism located below the power battery bracket is used for adjusting a gravity center of an electric tractor in a horizontal direction; and the gravity center longitudinal-adjusting mechanism located below the gravity center horizontal-adjusting mechanism is used for adjusting the gravity center of the electric tractor in a longitudinal direction. According to the electric tractor gravity center adjusting device provided by the invention, the characteristic of large weight of an electric tractor battery can be fully utilized, gravity center adjusting can be carried out in the horizontal direction and the longitudinal direction without extraly adding balancing weight blocks, the gravity center adjusting range is wide, the precision is high, the tractive efficiency and the stability of the electric tractor can be improved, the energy can be saved, and the environment can be protected.

The invention aims at solving the problems that in an existing hub hydraulic drive system control method, the time-varying characteristic of system efficiency is ignored, control parameter calibrationis complex, control accuracy is poor, and self-adaptive control of a system cannot be guaranteed, provides a model prediction control method of a hub hydraulic motor auxiliary drive system and belongs to an automobile control system. In the control method, according to a kinetic equation and the actual control requirement of a hub hydraulic drive vehicle transmission system and with considerationof the characteristics that hydraulic system efficiency varies time to time along with the parameters such as temperature, pressure and the rotation speed, a vehicle transmission system kinetic modelis established, a control increment acting on system model prediction control is solved through a derivation feedback control law, and design of a model prediction controller based on time-varying efficiency is finished. The method has the advantages that the control parameters are optimized through consideration of the efficiency time-varying problem of the system, meanwhile, the feedback control law is explored, the accuracy of a control algorithm and the self-adaptive ability of system control are improved, quick self-adjustment of the system is achieved, and it is guaranteed that the vehicle traction performance is optimal.

The invention discloses a hybrid power driving device of a bulldozer, which comprises an engine, a generator, a current control module and an electrical motor, wherein an output shaft of the engine is connected with a power distribution device, an output shaft of the power distribution device is connected with the generator, alternating current generated by the generator is converted by the current control module and then drives the electrical motor, and the electrical motor drives a drive sprocket and an apron wheel. The driving device is steady and reliable in transmission and low in noise and oil consumption, has high transmission efficiency, can respond to changes of loads quickly, and can achieve stepless speed change. The invention also discloses the bulldozer with the driving device.

The invention discloses a building construction cable continuous extrusion molding machine that comprises a melting box, a heating device, a first outer sheave mechanism, a driving gear, a driven gear, a booster pump, a coating device and an adjusting traction device. A hot gas located at the upper side in the melting box is injected into a molten material through an air intake so that the molten material is heated uniformly to prevent a case that a conventional heating device causes high temperature at a position close to heating device and low temperature at a position away from the heating device and to improve the melting quality of a raw material. Since the rotation of a rotating column and the intermittent traction of the adjusting traction device are synchronous, a wire core can be completely coated. Thus, a case is avoided that too fast or too slow speed of the traction device leads to too little or too much insulating material coating the wire core, and product quality is improved. By adjusting a tightening bolt, the height of a pinch roller can be adjusted. Thus, adjustment is performed according to needs of different wire diameters. By means of surface contact traction, traction efficiency is improved and a cable is protected.

The invention discloses a petroleum horizontal well obstacle-crossing tractor, which comprises a detection centralizer, a first traction mechanism, a second traction mechanism and a control mechanism,wherein the detection centralizer is used for detecting information such as the location and size of obstacles in the wellbore; the traction mechanisms are connected at a certain angle, each tractionmechanism is equipped with a driving wheel, the installation directions of the driving wheels respectively correspond to the located directions of corresponding centralizing wheels on the centralizer, and the control mechanism achieve a purpose of fast obstacle crossing through controlling the support and contraction of different driving wheels. The petroleum horizontal well obstacle-crossing tractor performs obstacle crossing in a crossing mode, and is rapid in obstacle crossing process and controllable in obstacle crossing action, thereby being an obstacle-crossing tractor specially appliedto petroleum horizontal wells with varying pipe diameter and many downhole obstacles.

The invention relates to a traction bed, in particularly to a thigh traction bed and aims to provide a thigh traction bed capable of performing thigh traction and preventing secondary injury. According to the technical scheme, the thigh traction bed comprises a bed underframe, bed supports, a bed board, a first slider, a support plate, a tightening belt, a first support, first pulleys, a second support, a second pulley and a steel wire rope, wherein the two bed supports are mounted on the left side and the right side of the top of the bed underframe respectively; the bed board with a supporting function is fixedly mounted between tops of the two bed supports on left side and the right side; a first opening is formed in the left part of the bed board; a second opening with a guiding effectis formed in the middle of the bed board. A thigh of a patient can be stretched rightwards to reach the appropriate position for traction by anticlockwise rotating a rotating disc, the thigh is fixedby the tightening belt, therefore, the traction of the thigh can be facilitated, and the secondary injury can be prevented; the body of the patient can be prevented from moving rightwards with the thigh during traction by adjusting a clamping device.

The invention relates to a comprehensive pipe gallery cable traction and displacement laying system and an application method. The system comprises a cable traction process on a cable roller channel which is located at one side of a comprehensive pipe gallery and is parallel to and close to a cable design laying position, and a displacement process which enables a cable to be displaced to the cable design laying position, wherein a comprehensive pipe gallery electric vehicle, a cable traction and displacement device and a process parameter wireless sensing detection device are additionally arranged on the basis of an existing cable laying machine so as to improve the process efficiency, a video and safety monitoring control system is adopted in the laying process, and on the basis of traction machinery, a traction mode is optimized, a cable laying dynamic laying diagram in the comprehensive pipe gallery is established, and a cable laying process is managed and controlled, so that automatic calculation of a process traction force limit value, a protection value parameter and a segmented traction distance parameter, process cable laying dynamic display monitoring chart and process parameter visual monitoring, process voice communication normalization, process protection automation and fault reason processing and process video and voice informatization are realized.

The invention discloses a street lamp cable efficient traction device comprising a base. Supporting plates are vertically fixed to the two sides of the upper end face of the base. A plurality of traction assemblies are horizontally arranged between the supporting plates on the two sides, each traction assembly comprises a driving shaft and a driven shaft, the two ends of each driving shaft and thetwo ends of each driven shaft are rotationally installed on the supporting plates through bearing pedestals, traction wheels matched with each other are fixed to the driving shafts and the driven shafts, and a plurality of grooves are formed in the traction wheels; a top plate is fixed to the top of the supporting plate and provided with a lifting mechanism for driving the driven shaft to move upward and downward. According to the street lamp cable efficient traction device, traction force is dispersed through multiple traction assemblies, and traction is more stable and reliable; a pluralityof grooves with different opening widths and depths are formed in the traction wheels so that the cable traction device is suitable for traction of cables of different specifications, wide in application range, convenient and rapid to operate and high in traction efficiency.

The invention discloses an intelligent electro-hydraulic lifting control device for a paddy field agricultural machine. The intelligent electro-hydraulic lifting control device comprises a detection module, a control module and an execution module. The control module makes an action judgment according to agricultural machine information acquired by the detection module and sends a signal. The execution module controls automatic lifting, lowering and leveling of agricultural implements. The detection module comprises an automatic driving controller, a wheel speed sensor, a body tilt angle sensor and a leveling cylinder displacement sensor. The control module comprises an electro-hydraulic lifting controller. The execution module comprises an electro-hydraulic lifting control valve, a pump,a hydraulic cylinder and a three-point suspension, and is used for executing instructions sent by the control module to control movement of the agricultural implements. The agricultural machine information includes a straight travelling signal, a turning and reversing signal and an agricultural implement leveling signal. The invention further discloses an intelligent electro-hydraulic lifting control method for the paddy field agricultural machine. Straight travelling of the paddy field agricultural machine, the tilling depth of the agricultural implements during turning and reversing, and automatic leveling of the agricultural implements in a paddy field can be controlled.

The invention discloses an automatic traction method and system for a submersible to go in and out of a tunnel. The method comprises the steps of detecting whether a to-be-detected object on the submersible reaches a preset position of a tunnel entrance through distance sensors disposed at two sides in the tunnel, and when detecting that the to-be-detected object reaches the preset position of the tunnel entrance, acquiring the distance between the to-be-detected object and the two sides of the tunnel through the distance sensors, and if the distance difference between the to-be-detected object and the two sides of the tunnel is larger than a preset range, indicating that the advancing direction of the submersible deviates and needs to be adjusted, determining dragging parameters of dragging equipment based on the distance difference between the to-be-detected object and the two sides of the tunnel, and safely dragging the to-be-detected object into the tunnel, and after the to-be-detected object safely enters the tunnel, correcting the real-time running direction of the submersible according to the dragging parameters until the submersible safely reaches the working position in the tunnel. Rapid and simple automatic calibration of the system is achieved, the labor cost is reduced, and the positioning accuracy and the traction efficiency are improved.

The invention discloses mounting equipment for a building outer wall water tube. The mounting equipment comprises limiting mechanisms, a positioning mechanism, a first threaded rod, a connecting gear,a limiting blocking shaft, a supporting frame, a connecting sleeve, a gear ring and an adjusting mechanism, wherein the outer end surface of the adjusting mechanism is fixedly connected to the connecting sleeve for supporting through a fixed plate. The adjusting mechanism is arranged, so that efficiency of pulling and positioning the outer water tube is effectively improved; the mounting equipment can be suitable for water tubes with different radiuses, and effectively improves adaptability; when the two groups of limiting mechanisms get close to each other for clamping the outer water tube,spring shafts can provide enough elastic force to clamping plates to buffer, so that damages to the water tube as a result of too great contact water pressure between the clamping plates and the watertube are prevented, and clamping stability and protection on the water tube is improved.

The invention belongs to the technical field of the design and manufacturing of traction equipment for a coal mine; in order to solve a problem of swing compensation appearing when a rubber-tired vehicle hauls a track mine car, the invention provides a rubber-tired track mine car traction device with an offset compensation function. The rubber-tired track mine car traction device comprises a slide track and a track trolley, wherein the track trolley comprises a guide wheelset, a wheel carrier, a rotation frame and a traction element; the guide wheelset is connected with the wheel carrier and is arranged in a track groove of the slide track; the wheel carrier is connected with the rotation frame via a horizontally arranged pin shaft; the rotation frame is connected with the traction element to form a rotation pair. The rubber-tired track mine car traction device can rapidly realize the connection and traction functions of the rubber-tired vehicle and the track mine car, can also effectively compensate angle differences between the track mine car and the rubber-tired vehicle when the rubber-tired vehicle swings transversely and goes uphill and downhill and a torsion deviation of the rubber-tired vehicle, not only effectively utilizes the characteristics of great adhesion force, strong traction capability, strong climbing capability and the like, but also effectively ensures the smooth operation of the mine car in a track.

The embodiment of the invention provides a bogie and a railway vehicle, and the bogie comprises a framework; the framework comprises two side beams extending in the longitudinal direction and a cross beam arranged between the two side beams. The wheel pairs are arranged below the two ends of the side beams; the wheel pair comprises an axle, wheels symmetrically arranged on the axle and an axle box. A traction device; the traction device comprises a first traction pin and a second traction pin which are rotationally connected, and the first traction pin is matched with the cross beam to transmit longitudinal force; the first traction pin and the second traction pin are respectively used for being connected with two adjacent carriages; the primary suspension device is arranged between the end part of the side beam and the axle box; and the secondary suspension device is arranged on the framework. The bogie and the railway vehicle provided by the embodiment of the invention are beneficial to reducing the self weight of the vehicle and improving the traction efficiency.

The invention discloses a cable laying traction device and traction method for intelligent pipe gallery construction. A traction device relates to the technical field of cable laying and comprises a main bin body, a clamping mechanism, a moving mechanism and a pulling mechanism, the clamping mechanism comprises an upper plate, a lower plate, a clamping plate and a sliding rod, the sliding rod penetrates through the upper plate and is connected to the clamping plate to move vertically; a clamping spring is arranged between the upper plate and the clamping plate; and a cable penetrating throughthe main bin body is clamped by means of elastic force; the moving mechanism is arranged on the outer side of the main bin body and drives the whole device to move through rollers of the moving mechanism; and the damping assembly is arranged, so that moving is more stable; a pull rod of the pulling mechanism is connected with a sliding rod; clamping operation of operators is facilitated; a pull handle of the pulling mechanism is connected with the main bin body; and traction operation of the operators is facilitated in cooperation with the moving mechanism. According to the invention, batch cable traction can be realized, and the cable can be conveniently and stably pulled to a required position.

The invention discloses an articulated steering mechanism for use on a tractor; the articulated steering mechanism comprises a front transmission box (1), a rear transmission box (2) and a steering wheel (3); a steering mechanism connected with the front transmission box (1) and the rear transmission box (2) is arranged between the front transmission box (1) and the rear transmission box (2), and a steering push mechanism connected with the steering mechanism is disposed on the upper end face of the steering mechanism; the steering wheel (3) is connected with the upper end face of one end of the steering push mechanism through a hydraulic steering gear (4) and a steering wheel mount (5), and the steering push mechanism is connected with a hydraulic system through the hydraulic steering gear (4). The articulated steering mechanism has the advantages of compact structure, ingenious design, and good reliability of use, may be used to provide small steering radius, good steering flexibility and good maneuverability for a tractor, and is effective to operate in hilly areas, vegetable greenhouses and orchards.