156 results about "Traction system" patented technology

The invention provides a bumper assembly low-speed collision test system and method, and the system comprises a mobile barrier trolley, a universal rapid installation clamp, a multi-sensor integrated measurement module, and a data collection and processing system, and can adapt to different bumper assemblies to be tested through the universal rapid installation clamp, simulates the real collision process, and improves the test precision. In the process that the traction system drives the movable barrier trolley to move along the track to conduct the collision test, the multi-sensor integrated measurement module can collect collision data and draw a data curve, and the accuracy of the collision test result is improved. And then the data acquisition and processing system scores the maintenance economy, the energy absorption efficiency, the passenger protectiveness and the structural integrity according to the collision data and the data curve, grades the collision test result according to the scoring result, and finally can output a depth test report containing rating and improvement suggestions. The method is used for supporting and improving the design and optimization capability of the bumper assembly.

The utility model relates to the technical field of wire cutting, and discloses a diamond wire cutting machine traction system which comprises a base, a diamond wire and a placing frame, the top of the base is fixedly connected with a supporting frame, the two sides of the top end of the supporting frame are rotationally connected with a wire inlet wheel and a wire outlet wheel respectively, and an encoder is arranged on one side of the wire outlet wheel. A first tension adjusting assembly and a second tension adjusting assembly are arranged on the two sides of one end of the supporting frame correspondingly, the first tension adjusting assembly and the second tension adjusting assembly each comprise a fixing support, and one side of each fixing support is rotationally connected with a first tension wheel and a fixed wheel. A traditional traction servo motor is omitted, a high-precision encoder is additionally arranged on a wire outlet wheel and serves as a constant-speed wheel to control stable operation of a whole wire net, a traction shaft cannot form a slipping effect in the whole operation process of equipment, and therefore the service life of the traction shaft is greatly prolonged, and the occupied area is reduced.

An autonomous utility vehicle can include a towing component. The vehicle can further include a fastening component attached to the towing component, and configured to fasten to a cable to be pulled by the vehicle. The vehicle can further include processor(s) coupled to a memory having instructions stored therein, which when executed by the processor(s), cause the vehicle to: detect a tension of the cable, determine whether the tension of the cable is detected, in response to determining that the tension of the cable is detected, determine whether the tension of the cable has exceeded a tension threshold, and in response to determining that the tension of the cable has exceeded the tension threshold, adjust at least one of: a speed of the vehicle or a heading of the vehicle.

A traction system for a mobile support device, such as a prosthetic foot piece or a crutch, includes a chassis, a latch assembly, and a strap. The chassis is couplable to a distal end of the mobile support device to extend underneath a bottom side of the mobile support device and the latch assembly. The latch assembly includes a front catch and a rear catch, both of which are securable to a top side of the mobile support device, the front catch being closer to the distal end of the mobile support device than the rear catch, and a lever having a front end and a rear end, the front end being releasably latchable to the front catch, the rear end being releasably latchable to the rear catch when the lever is pivoted about the front end of the latch. The strap is secured to the lever and the chassis.

The invention discloses a harmonic suppression method and system of a rail transit electric traction system. The system comprises a traction unit harmonic response acquisition module, a traction group construction and intra-group influence analysis module, a traction group collaborative behavior analysis module, a collaborative suppression strategy generation module and a suppression resource regulation and control module. The method comprises the following steps: dividing a plurality of traction units on the same train into traction groups, analyzing harmonic response information of the traction units on a traction group level to generate comprehensive harmonic influence characteristics, analyzing action results of the plurality of traction groups on a traction power supply section level, and judging whether a harmonic collaborative amplification or collaborative instability trend exists or not; and thus, a collaborative harmonic suppression strategy for the traction group or the traction unit is generated. Through differential regulation and control on harmonic suppression resources and in combination with feedback correction, dynamic adjustment of a harmonic suppression process is realized, and pertinence of harmonic suppression under a complex operation condition and operation stability of a traction power supply system are improved.

The invention belongs to the technical field of bridge construction, and particularly relates to a cast-in-place box girder formwork sliding device and a construction method thereof.The device comprises a sliding rail system, a formwork fixing platform and a traction system, the sliding rail system is formed by detachably splicing multiple sections of I-shaped steel, and the formwork fixing platform is of an integrated frame structure; a roller group matched with the sliding track system is arranged at the bottom of the template fixing platform, and an adjustable template rolling shaft is arranged at the top of the template fixing platform; the traction system is used for driving the template fixing platform to slide along the sliding rail system; the construction method comprises the steps of parameter matching, track laying and positioning, formwork mounting and fastening, sliding propulsion control, position correction locking and cyclic displacement operation, deviation is corrected through closed-loop regulation and control in sliding, and positioning adopts a three-level alignment and multiple locking positioning mechanism to guarantee precision; the problems existing in traditional cast-in-place box girder formwork construction are solved, and the construction goals of mechanization, high precision, high adaptability, safety and stability are achieved.

The invention provides a factory-like rapid construction method for an underground long rigid pipeline, a plurality of underground factory units are planned and excavated along a pipeline line at intervals, each underground factory unit comprises an assembling unit and a traction unit, and the adjacent underground factory units are connected through a foundation pit; a travelling crane is arranged in the assembly unit, a traction system is arranged in the traction unit, an assembly jig frame is arranged in the foundation pit, and an underground factory greenhouse is installed above each underground factory unit and the foundation pit; the pipeline transport vehicle transports the pipeline sections into the assembling units, the travelling crane hoists the pipeline sections to the assembling jig frame, and all the pipeline sections are welded to form a pipeline with the designed length; the welded pipeline is driven by a traction system and assisted by a lifting type sliding support to move to a traction unit along the foundation pit; and then welding with a subsequent pipe section to form a continuous pipeline. The problems that underground long rigid pipelines are low in construction efficiency, installation precision and construction quality are solved.

The invention relates to the technical field of wind power plant equipment transportation, and provides an auxiliary uphill device suitable for a mountainous region wind power plant equipment transportation vehicle, which comprises fixed support columns arranged in pairs and symmetrically distributed on two sides of a transportation channel; the rolling equipment and the fixed supporting columns are arranged in a one-to-one correspondence manner; the movable pulley is detachably arranged on a semitrailer of the transport vehicle, and the movable pulley is located on the side, back on to the semitrailer, of the head of the transport vehicle; one end of the first steel wire rope is connected with the rolling equipment on the first side, and the other end of the first steel wire rope is connected with one side of the movable pulley; one end of the second steel wire rope is connected with the rolling equipment on the second side, and the other end is connected with the other side of the movable pulley. Loss caused by the fact that traction force is transmitted to the semitrailer through a vehicle head can be avoided, effective traction force is improved, and the problem that uphill power of a heavy-load transport vehicle is insufficient is solved; in addition, the two steel wire ropes and the movable pulley form double-side traction, a foundation is provided for direction adjustment of traction force, and direction deviation caused by single-side traction is avoided.

The utility model provides a screen structure relates to door and window technical field, including synchronous wheel one, two and with two meshed synchronous belt one group constitutes the traction system, synchronous wheel three, four and with two meshed synchronous belt two group constitutes the winding transmission system, power system, screen curtain mechanism and frame, synchronous wheel two, three are connected by transmission shaft no.

The invention discloses a novel floating dock traction system which comprises a track, and a ship moving trolley is arranged on the track. The ship moving trolley comprises a frame, and a motor, a follow-up gear, trolley wheels and a driving gear driven by the motor are arranged on the frame; the follow-up gear is arranged below the driving gear, and the driving gear is meshed with the follow-up gear; the trolley wheels are fixedly connected with the follow-up gear through a horizontal shaft; a first supporting component and a second supporting component are fixedly arranged on the frame, the first supporting component is connected with a vertical anti-overturning wheel, and the second supporting component is connected with a horizontal anti-overturning wheel; the track comprises a track panel and a track web fixedly arranged at the bottom of the track panel; the width of the track panel is greater than that of the track web; the trolley wheels are arranged above the track panel, and the vertical overturn-preventing wheels and the horizontal overturn-preventing wheels are arranged below the track panel. The traction device is compact in structure, high in traction efficiency, capable of saving cost and reducing deck area occupation and beneficial to cabin arrangement.

The application provides a method and device for inhibiting DC bus voltage oscillation of a traction converter and a traction system, the method comprising: obtaining an oscillation component of bus voltage and inputting the oscillation component into a phase lead link to obtain a current feedforward control compensation quantity; calculating a sum of a torque component of a motor given current vector and the current feedforward control compensation quantity to obtain a torque component of a corrected motor given current vector; calculating a motor voltage vector through a vector control algorithm according to the corrected motor given current vector and an actual motor current vector; and performing pulse width modulation (PWM) according to the motor voltage vector to obtain a driving signal of the traction converter, so that the traction converter provides voltage for the motor under the driving of the driving signal. The application can effectively inhibit DC bus voltage oscillation of the traction converter on the basis of meeting motor control performance, so that the traction converter runs more stably and the reliability of the traction system is improved.

This invention discloses an insulation detection method, device, and traction converter for the main circuit of a traction system, relating to the field of rail transit technology. The method includes: when in the insulation detection mode of the traction motor, blocking the pulses of non-target modules connected to the intermediate DC circuit and disconnecting the contactors of the non-isolated circuits connected to the intermediate DC circuit; using the grounding detection circuit in the intermediate DC circuit to obtain the insulation detection voltage information of the traction motor; and determining the insulation resistance to ground of the traction motor based on the insulation detection voltage information. This invention enables rapid and proactive identification and quantitative detection of the insulation resistance of the main circuit of the traction system while ensuring the existing functions of the traction converter remain unchanged. This allows for early identification of insulation performance degradation in the main circuit before a fault occurs, enabling vehicle users to accurately and reliably understand potential fault points in advance and take preventative maintenance measures, achieving intelligent early warning and autonomous real-time monitoring.

The utility model relates to the technical field of traction equipment, in particular to a traction system for vertically arranging a deep drilling optical cable, which comprises a winch, a traction cable and a damping device, the traction rope is connected with the winch so as to be driven by the winch to retract and release. The damping device comprises a damping mechanism and a damping adjusting mechanism, the damping mechanism is connected with the traction cable and used for absorbing impact force of the traction cable, and the damping adjusting mechanism is connected with the damping mechanism and used for adjusting damping of the damping mechanism. According to the traction system for vertical arrangement of the deep-drilling optical cable provided by the utility model, the damping device is arranged, so that the damping mechanism of the damping device can be used for applying damping to the traction cable, and the situation that the traction cable is broken due to sudden acting force generated when the winch is started and stopped is prevented; traction cable fatigue and optical cable damage caused by uneven stress are effectively relieved, the damping adjusting mechanism can adjust damping of the damping mechanism according to requirements, and the flexibility of the system is remarkably improved.

A sand grooming vehicle comprises a traction system for moving the vehicle in reverse and a rake movable between a plurality of positions. A vehicle control unit includes at least one memory and at le

The present application relates to the technical field of sightseeing car traction system, and disclose a kind of traction system for straddle type monorail sightseeing car, including power supply brake detection module, path monitoring system, monorail overhead line and wireless communication module;The power supply brake detection module includes energy storage module and traction control module, the energy storage module is used to provide direct current, and the power energy is input to traction control module by DC / DC converter;The power supply brake detection module is used to change DC1500V into AC1500V;The power supply brake detection module includes direct current DC mode and alternating current AC mode;Power supply brake detection module includes ramp conversion module, ramp conversion module is used to track the slope on track in the process of running, path identification slope section, the path identification slope section is provided with climbing mode, flat slope mode and downhill deceleration mode.The present application has the advantages of automatic traction speed regulation and automatic conversion of switching direct current and alternating current.

The invention provides a segmented traction conversion method for a load-bearing cable. The method comprises the steps that an anchor head and a group traction head are sequentially arranged from the traction end of the load-bearing cable; a traction system is erected and used for pulling the bearing cable, and the traction system comprises traction nodes and corresponding sections of traction cables; connecting the group of traction heads to a section of traction cable of the traction system for pulling the group of traction heads to a node; after the group of traction heads are connected to the section of traction cable, the connection between the group of traction heads and the section of traction cable is relieved, and the group of traction heads are pulled to the first node; and the anchor head is pulled to the first node until the anchor head is connected to the section of pulling cable. Relay traction of the segmented traction system is achieved through the traction head and the anchor head, the bearing cable does not need to be manually pulled, a complex traction system structure does not need to be arranged either, and the advantages of construction safety, low construction cost and the like are achieved.

The utility model discloses a kind of inorganic room freight elevator arrangement structure, comprising: traction system, counterweight system, car system, safety linkage system, guide rail and guide rail support system and guide wheel system, car system includes car bottom wheel, traction system includes bearing beam, bearing beam is installed on hoistway upper bearing wall, bearing beam is installed with tractor, counterweight side guide wheel, counterweight rope head mounting device, car rope head mounting device, speed limiter mounting device and steel wire rope.The utility model adopts the structure arrangement mode of 4:1 of traction ratio, because the car depth of freight elevator is deeper, this 4:1 arrangement structure steel wire rope can hold the two sides of car bottom, than the structure of 2:1 of traction ratio only holds the middle operation of car bottom, more stable, under the same motor power, the structure of 4:1 of traction ratio can improve the rated load capacity of elevator.

The utility model relates to the field of traveling crane traction systems, solves the problem that in the prior art, after a winch for adjusting the height of a fish lead is arranged outside a traveling crane, the adjustment and control operation for keeping the height of the fish lead unchanged in the traveling crane moving process is tedious, and provides a hydrological traveling crane shoreside traction system. Comprising a crane, a first pulley, a second pulley, a first rope and a movable pulley, the first pulley is connected with the travelling crane; the second pulley is connected with the travelling crane; the first rope is wound on the first pulley and the second pulley; and the first rope between the first pulley and the second pulley is wound on the movable pulley. When the crane moves, the first pulley and the second pulley can be driven to move, then the movable pulley drives the fish lead to move, in the moving process of the crane, one side of the vertical first ropes on the two sides of the movable pulley is lowered, the other side of the vertical first ropes is lifted, and then the total length of the vertical first ropes on the two sides of the movable pulley can be kept unchanged. And the height of the fish lead is not changed.

The application provides a passenger elevator operation protection system and application, which comprises an elevator car, the elevator car comprises an operation system and a safety protection system, the operation system comprises a guide system and a traction system, the safety protection system comprises a braking system, an alarm system, a buffer system and a door locking system, the traction system is mainly used for outputting and transmitting power, can drive the elevator car to move up and down, and can make the traction motor accurately stop at a landing position, so that the elevator car can be accurately stopped at the landing position. The first line wheel and the second line wheel are arranged, the compensation chain of the elevator car can be tensioned and limited, the situation that the compensation chain drags the ground due to the movement of the elevator car is avoided as much as possible, when the elevator falls, the first line wheel and the second line wheel can swing upward at the same time, the bottom of the elevator is buffered, and the compensation chain of the elevator car can be tensioned and limited when the elevator car does not fall.

The present application relates to the field of rehabilitation equipment. The purpose is to provide a traction system for orthopedic rehabilitation, comprising a lying plate, the middle part of the lying plate is provided with a concave mounting cavity, the mounting cavity is provided with a thigh support plate, the lying plate on both sides of the thigh support plate is respectively provided with a hip support area and a foot support area; the foot support area is provided with a moving plate which can move along the length direction of the lying plate under the drive of a drive mechanism, the moving plate is provided with a foot pedal for fixing the foot of a patient; the thigh support plate can swing obliquely upward around the center line of the plate shaft when the moving plate moves toward the hip support area to form support for the thigh of the patient. When the present application is used for knee joint rehabilitation traction of a patient, it can form active support for the thigh of the patient, guide the bending direction of the thigh and the calf, and reduce the impact on the knee joint.

The invention discloses a winch traction system steering pulley stress detection device, which belongs to the technical field of electric power circuit construction, and comprises a main body, a connecting shaft rotatably mounted on the main body, and a movable arm connected with the main body and provided with a roller, and further comprises a pressure sensor arranged on a stress path of the connecting shaft, the traction force sensor is used for detecting traction force borne by the steering tackle; the control panel is arranged in the main body, is electrically connected with the pressure sensor and is used for processing the traction force data; the positioning module is integrated on the control panel and is used for acquiring the position information of the steering pulley; the original invisible mechanical state is converted into real-time and accurate digital information with a position label, it is guaranteed that the signals collected by the sensor truly reflect the axial traction force borne by the tackle, the processes such as downhole pre-preparation and real-time detection in operation are omitted, the time consumption of single-time operation is shortened, and the operation and maintenance efficiency is greatly improved.

The invention relates to a suspension bridge main cable strand magnetic attraction antifriction traction system, and belongs to cable strand preforming traction devices. Comprising a plurality of supporting units arranged at intervals in the traction direction of a main cable strand and a cable strand take-up frame used for coiling the pulled cable strand. Each supporting unit comprises a supporting roller assembly and a magnetic suction adjusting assembly; the supporting roller assembly comprises a supporting roller and a roller support. The magnetic attraction adjusting assembly comprises a magnetic attraction counterforce support, a magnetic attraction adjusting screw, a magnetic attraction adjusting nut, a magnetic attraction force sensor and a magnetic attraction device. The magnetic attraction devices are located above the supporting rollers in a one-to-one mode and used for generating magnetic attraction force to attract the main cable strand, and the height of the magnetic attraction devices is adjustable. The frictional resistance between the roller and the lower-layer steel wire caused by the weight of the main cable strand is reduced, and the stress nonuniformity and the length error of the upper-layer steel wire and the lower-layer steel wire are eliminated.

The invention relates to the technical field of excavator traction, in particular to an excavator traction system, a control method and engineering machine.The traction system has a low-traction-force rope winding mode, and in the low-traction-force rope winding mode, an overflow valve set enables the system overflow pressure of a second oil way to be reduced from first pressure P1 to third pressure P3; the oil inlet of the first reversing valve V1 is communicated with the second working oil port, high-pressure oil output by the main pump enters the rope winding oil port of the winch motor M1 through the first reversing valve V1 and the second oil way to achieve low-traction-force rope winding action, other operators do not need to assist in commanding when the winch winds the steel wire rope, the situation that the rope is wound to the bottom can be avoided, and the working efficiency is improved. A steel wire rope traction pin damages a winch and a rope guider; the traction system has the free rope releasing mode, in the free rope releasing mode, the brake oil cylinder G1 relieves braking on the winch motor M1 to achieve the free rope releasing action, and therefore the situation that the whole equipment is overturned is avoided.

The application discloses a control method and device for preventing skidding and spinning of a rail vehicle, and relates to the technical field of rail vehicles, wherein the method comprises the following steps: collecting current axle speed information of each brake axle, and determining current axle speed and current axle acceleration of each brake axle according to the current axle speed information of each brake axle; determining a current control decrement of each brake axle according to the current axle speed, the current axle acceleration and a pre-determined output decrement mapping relationship; in response to the current control decrement being higher than a first decrement threshold, outputting a traction force control signal to a traction system according to the type of the traction system of the rail vehicle and the current control decrement of each brake axle; and in response to the current control decrement being lower than a second decrement threshold, outputting a retardation signal to the traction system. The application can effectively inhibit wheel set spinning / skidding, improve wheel / rail adhesion utilization, and obtain higher traction force.

A rehabilitation training traction frame belongs to the technical field of rehabilitation training equipment. The rehabilitation training device solves the problems that existing rehabilitation training equipment is single in function and high in price, and consequently the cost performance of the rehabilitation training equipment is low. The device comprises a training system and a traction system, the training system is connected with the traction system, functional supporting rods are arranged on a training frame base of the training system, each functional supporting rod is sequentially provided with a pedal rod, a middle bent rod mechanism and an upper supporting handrail, and a traction base of the traction system is connected with the training frame base. The traction support is installed on the traction base, a pulley installation seat is installed on the traction support, a first pulley and a second pulley are installed on the pulley installation seat, a plurality of balancing weights of the traction support are connected with the guide rod in a sliding mode, steel ropes are connected to the balancing weights, the steel ropes are connected with the traction pull rod, and a traction pull rope is connected to the traction pull rod. According to the rehabilitation training traction frame, the cost performance of rehabilitation training equipment is remarkably improved.

Captive wing traction system (1) including: a trajectory control flying device (7) attached to a traction wing (5) by fixed suspension lines (6) and mobile suspension lines (6), the trajectory control flying device (7) being adapted to control the mobile suspension lines (6); a traction line (8) connecting the trajectory control flying device (7) to the base platform (3); a guide line (9) that connects the leading edge (16) of the traction wing (5) to the trajectory control flying device (7); a stowage line (10) one end of which is connected to the base platform (3) and the other end of which is slidably connected to the guide line (9); a deflector element (13) attached to the stowage mast (4).

The invention provides a method for determining the position of a broken wire of a steel belt. The method aims at solving the problem that CN114104925B does not give the specific position of a broken wire point. The method is characterized in that a traction system with a broken wire detection device and an alarm circuit and a broken wire positioning device of the traction system are used, the broken wire positioning device comprises an MCU, a position sensor and the alarm circuit, and the alarm circuit is a photoelectric isolator; when the broken wire passes through the wheels, the time for the broken wire to pass through the wheels is different, and the corresponding alarm duration and mode are different, so that whether the broken wire passes through the traction wheel, the counterweight guide wheel or the lift car guide wheel can be determined, and then the broken wire alarm signal is generated according to the product of the lifting speed V of the lift car and the occurrence time T1 of the broken wire alarm signal. And the distance of the broken wire at the initial position of the traction wheel, the counterweight guide wheel or the lift car guide wheel can be judged.

The utility model relates to the field of silage processing devices, and discloses an oat grass stretch film wrapped silage processing device which comprises a traction system, a bolt is slidably connected to the left side of the traction system, a packaging system is slidably connected to the outside of the bolt, and a fixing assembly is installed on the left side of the traction system. The top of the packaging system is provided with a replacement assembly, the fixing assembly comprises a shell, the bottom of the shell is fixedly connected to the top of the left side of the traction system, an insertion rod is slidably connected into the shell, a sliding plate is fixedly connected to the exterior of the insertion rod, a first spring is fixedly connected to the right side of the sliding plate, and a baffle is slidably connected into the shell. According to the device, the inserting rod is pulled to drive the sliding plate to compress the first spring, so that the inserting rod is separated from the inserting pin, meanwhile, the baffle falls into the inserting rod and is blocked at the outlet of the inserting rod, the packaging system can be rapidly disassembled from the traction system, time and labor are saved, the installation efficiency is effectively improved, and meanwhile the inserting pin cannot fall off.

The utility model discloses a kind of offshore floating photovoltaic slip installation support, including the floating part for installing photovoltaic module and being connected with cableway traction system, the slip part for connecting ground water entry track and the two-way rotating structure for connecting floating part and slip part, the floating part includes pontoon and connecting structure, connecting structure is rotatably connected with two-way rotating structure and realizes horizontal direction rotation, the slip part includes support piece, several rolling members are rotatably installed on the support piece, two-way rotating structure is fixedly connected above support piece, by setting the overall configuration including floating part, slip part and two-way rotating structure, photovoltaic module can be assembled on land, and then be slid into sea by cooperating with ground water entry track by slip part, utilize the horizontal and vertical rotation ability of two-way rotating structure Automatic adaptation sliding direction and water surface vertical angle of inclusion, without aerial work and artificial angle adjustment, avoid the problem existing in traditional installation process.

A traction system for automatically tracking and displaying parameters of a joint during surgery. The traction system includes a traction device and a computing device. The traction device has a proximal end and a distal end. The proximal end has a platform with a perineal post extending therefrom and the distal end has one or more footrests extended therefrom. One or more sensors are connected to the traction device. The one or more sensors generate sensor data based on movement of the traction device. A computing device is connected to the one or more sensors and is configured to receive the sensor data and process the sensor data into a metric. A display connected to the computing device is configured to display the metric.