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31results about How to "Change stretch length" patented technology

Crane sling power generation system, crane sling and crane

The invention discloses a crane sling electricity-generating system, a crane sling and a crane. The crane sling electricity-generating system comprises a movable pulley, a generator and a storage battery, wherein the movable pulley is arranged on a crane sling frame and is connected with a fixed pulley block on a crane jib through a wirerope; during rotation, the movable pulley can drive a rotor shaft of the generator to rotate; an output end of a generator circuit is connected with the storage battery through a connection device; and when the sling moves down, the connection device ensures that the generator charges the storage battery. The crane sling electricity-generating system can make full use of the kinetic energy of the movable pulley to generate electric energy; the generated electric energy can be used to drive a telescopic mechanism and a rotary mechanism of the sling, and can also be used in other aspects of the crane so as to reduce oil consumption of the crane; meanwhile, hydraulic oil pollution can be reduced and environmental protection performance of the crane can be improved; in addition, the layout of a crane feeding circuit is simplified to optimize the service performance of the crane.
Owner:SANY MARINE HEAVY IND

Three-degree-of-freedom self-walking minitype shield machine

InactiveCN102797474APrevent skewingGas discharge is sufficientTunnelsSlagScrew conveyor
The invention relates to a three-degree-of-freedom self-walking minitype shield machine comprising a cutting head, a drive motor, a propelling oil cylinder, a supporting oil cylinder, a spiral conveyer, an inner support frame, an outer support frame, a hydraulic valve bank and a shield. In the invention, the cutting head adopts pick-shaped teeth cutting and realizes three-degree-of-freedom rotary cutting through an adjusting oil cylinder; a rock crush principle is as follows: coal rocks are subjected to crushing treatment through the pick-shaped teeth cutting and a secondary crushing mechanism by adopting a secondary crushing technology; a propelling system adopts two double-acting oil cylinders, a supporting and obstructing system adopts cross type double-acting oil cylinders, and rear support-front propelling and front support-rear contraction type stepping walking is realized through the control of a hydraulic system; a deslagging mode is as follows: slag and muddy water are conveyed into a conveying pipe by adopting the spiral conveyer, and deslagging is carried out by combining with negative pressure suction. According to the invention, the directional control and the large curvature radius curve walking of the three-degree-of-freedom self-walking minitype shield machine disclosed by the invention are realized; the slant stagger of a drill hole is prevented; the autonomous walking of the three-degree-of-freedom self-walking minitype shield machine is realized; long-distance hole drilling is ensured; and the problem of difficult deslagging of a pipe jacking technology is solved, and therefore, the gas is more sufficiently discharged.
Owner:CHINA UNIV OF MINING & TECH

Special oral mirror for medical treatment of stomatology department

The invention discloses a special oral mirror for medical treatment of a stomatology department. The oral mirror comprises a fixing cylinder, a screw is installed inside the fixing cylinder, a drivengear is installed in the middle of the right end of the screw, a driving gear is meshed with the lower end of the driven gear, a driving shaft is installed in the middle of the lower end of the driving gear, a moving column is mounted on the left end of the screw, a guiding sleeve sleeves the outer side of the moving column, a buffer spring sleeves the outer side of the screw between the right endof the guiding sleeve and the moving column, a fixing ball is connected to the left end of the moving column, grooves are uniformly formed in the inner side of the fixing ball, a rotating ball is installed inside the fixing ball, and the middle of the left end of the rotating ball is connected with a rotating rod. According to the oral mirror, through the mutual cooperation between the moving column and the screw, the change of the telescopic length of the oral mirror is achieved; through the mutual cooperation between the fixing ball and the rotating ball, the adjustment of the rotation angle of the oral mirror is achieved, the operation is simple, the reliability is high, the needs of medical workers for observing internal pathological tissues of patient mouths are satisfied, and the practicability is strong.
Owner:董蕾蕾

Stirring radius variable chlorination reaction kettle

The invention discloses a stirring radius variable chlorination reaction kettle which comprises a kettle body, wherein a stirring shaft is arranged in the kettle body; a plurality of shaft sleeves are arranged on the stirring shaft; casings are arranged on the two sides of the shaft sleeves; flanges are arranged at openings of the casings; extension rods are arranged in the casings in a sliding manner; one side, facing each shaft sleeve, of each extension rod is connected with each shaft sleeve via a spring; one side of the lower end of the kettle body is communicated with a discharge pipe; the tail end of the discharge pipe is connected with a filter; a filtration outlet of the filter is connected with a settling barrel; a side wall, close to the bottom end, of the settling barrel is communicated with a finished product discharge pipe; pipelines are arranged on the outer side of the kettle body and fixedly connected with the kettle body via connecting pieces; the pipelines are communicated with the interior of the kettle body via a plurality of spray pipes. The kettle is simple in structure and reasonable in design; a stirring radius of a stirring blade can be adjusted conveniently; the practicability is improved; at the same time, discharged materials are subjected to filtration and settling treatment, so that the discharged materials are better in quality.
Owner:桐乡市大麻腾岩广告设计工作室

Six-bar mechanism multi-foot robot and modeling method thereof

PendingCN110562348AExcellent force transmission performanceGood rigiditySpecial data processing applicationsVehiclesGear transmissionBevel gear
The invention discloses a six-bar mechanism multi-foot robot and a modeling method thereof. The six-bar mechanism multi-foot robot comprises a control device, bevel gear speed reducers and left-rightsymmetrical leg mechanisms, wherein the control device is composed of a power supply, a controller internally provided with a direct-current motor control board, a direct-current motor A and a direct-current motor B, and the output shafts of the direct-current motor A and the direct-current motor B are correspondingly connected to the bevel gear speed reducers; and each leg mechanism consists of shell plates, a gear transmission assembly A, a gear transmission assembly B, a six-bar mechanism and a foot claw assembly, and in the case of each leg mechanism, the gear transmission assembly A is mounted between the two shell plates, and the gear transmission assembly B is mounted between the other two shell plates, and both the gear transmission assembly A and the gear transmission assembly B drive the foot claw assembly through the six-bar mechanism. According to the six-bar mechanism multi-foot robot and the modeling method thereof, the two leg mechanisms are driven by the two direct-current motors, the six-bar mechanisms push eight foot claws of front and rear groups to move in a staggered mode, so that walking of the robot is achieved through the staggered movement of the adjacent six-bar mechanisms; and assembling of the robot is compact, thus meeting the requirements of narrow-space operation.
Owner:LULIANG UNIV

Multi-bud cane stem dropping apparatus

ActiveCN110140494AAdjustable opening timingChange stretch lengthPlantingBudEngineering
The invention provides a multi-bud cane stem dropping apparatus, comprising a support. A stem guide box assembly is mounted at the top end of the support; a transmission mechanism and a clamping component are mounted inside the support. Through the structure of the clamping component and stem guide box assembly and their ingenious cooperation, as well as simultaneous opening of stem guide plates and a moving claw, a dropping and clamping cooperation process of cane stems is achieved. If horizontal positions of a lower post and upper post are changed, opening time of the moving pawl may be adjusted; if extension length of a push bar is changed, the size of an opening of two stem guide plates and the opening time of the stem guide plates are changed; adjustment can be provided conveniently for the specific stem-dropping condition for different cane stems under different conditions. Each of the stem guide plates, the moving claw and a fixed claw is provided with a nonslip pad which is made of soft rubber or waterborne resin, providing good protection for buds during both cane stem clamping and conveying; uniform positions of buds are ensured before and after dropping and conveying ofcane stems, and it is ensured that the buds are in the horizontal positions during dropping.
Owner:NANNING UNIV

Heat radiating module and locking device thereof

The invention provides a heat radiating module which comprises a locking device, a heat radiator and a mainboard. The heat radiator comprises a baseboard, a penetrating hole is formed in the baseboard, a fixing hole is formed in the mainboard, the locking device comprises a buckling rod, an elastic element and a nut, the buckling rod comprises a column, a threaded portion formed by extending from the top end of the column, and a buckling portion formed by extending from the bottom of the column, the buckling portion comprises two retaining hooks which are opposite, the nut comprises a stud, a threaded hole is formed in one end of the stud, the elastic element sleeves the column, an internal thread of the nut and the threaded portion of the buckling rod are in screwed fit, the buckling portion of the buckling rod penetrates the penetrating hole of the baseboard and the fixing hole of the mainboard, the retaining hooks are retained to the mainboard, and the top end of the elastic element is connected to the stud of the nut in an abutted manner while the bottom end of the same is connected to the baseboard of the heat radiator in an abutted manner. The invention further provides the locking device. Compared with the prior art, the locking device of the heat radiating module has the advantage that the nut is rotated to change extending and contracting length of the elastic element so as to change buckling force.
Owner:HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1

Washing device for inner wall of water-coal-slurry pipe

The invention relates to a washing device for the inner wall of a water-coal-slurry pipe. The washing device comprises a front stator, a support column and a rear stator, wherein one end of the support column is fixedly connected with one end of the front stator, and the other end of the support column is fixedly connected with one end of the rear stator; a washing head is arranged at the other end of the front stator, and at least three groups of first support legs are uniformly distributed on the peripheral surface of the front stator; an adapter is arranged at the other end of the rear stator, and at least three groups of second support legs are uniformly distributed on the peripheral surface of the rear stator; the washing head is connected with the adapter through a guide pipe; a roller and a second motor driving the roller are arranged at the bottom ends of each group of second support legs; and the washing head comprises a shaft, a disc, a rubber leaf and a piston rod. The washing device for the inner wall of the water-coal-slurry pipe has the advantages that the front stator uniformly provided with at least three rollers and the rear stator uniformly provided with at least three driving rollers are arranged at the two ends of the support column, so that the washing device, free of rail devices in the prior art, can more flexibly walk.
Owner:WUHAN DESIGN & RES INST OF CHINA COALTECH & ENG GROUP

Iron-gallium alloy converse magnetostriction actuator driven by rotating motor and using method

The invention discloses an iron-gallium alloy converse magnetostriction actuator driven by a rotating motor. The iron-gallium alloy converse magnetostriction actuator comprises the rotating motor and an iron-gallium alloy converse magnetostriction actuator body. The iron-gallium alloy converse magnetostriction actuator body comprises an upper magnetic-conducting iron core (1), a lower magnetic-conducting iron core (3) and a rotor iron core (6). A gap is formed between the upper magnetic-conducting iron core (1) and the lower magnetic-conducting iron core (3) and internally provided with a permanent magnet (4) and iron-gallium alloy (5) parallel to the permanent magnet (4). The iron-gallium alloy (5) penetrates through the upper magnetic-conducting iron core (1). The rotor iron core (6) which is in clearance fit with the gap is arranged at the position, corresponding to the gap between the upper magnetic-conducting iron core (1) and the lower magnetic-conducting iron core (3), of an output shaft of the rotating motor.
Owner:ZHEJIANG SCI-TECH UNIV

Supporting equipment for bridge construction in field of bridge engineering

The invention discloses supporting equipment for bridge construction in the field of bridge engineering, and the supporting equipment comprises a supporting square column, the bottom end of the supporting square column is fixedly connected with a cross-shaped base, the top of an inner cavity of the supporting square column is rotatably connected with a threaded sleeve through a bearing, and the threaded sleeve is internally in threaded connection with a lead screw; the bottom end of the lead screw is fixedly connected with a moving square block, the moving square block is arranged in the supporting square column in a sliding mode, and the top of one side of the supporting square column is fixedly connected with a motor through a mounting base. Meanwhile, pedestrians can be blocked, the pedestrians can be far away from the device, objects falling from high altitudes are prevented from hurting people, the overall protection performance of the device is improved, meanwhile, falling sundries during bridge construction can be effectively blocked through a blocking mechanism, a protection mechanism below is prevented from being damaged, meanwhile, the situation that people are injured by falling objects can be further reduced, and the functionality of the device is improved.
Owner:姚平

Spring circuit breaker fault simulation device

The invention discloses a spring circuit breaker fault simulation device comprising an energy storage motor (1), a small chain wheel(2), a large chain wheel(3), a cam (4), a position-restricted pin (5), a maintaining supporting member (6), a main shaft (7), a synchronizing shaft (8), a connecting electromagnet (9), a connecting spring (14), a release maintaining sheet (11), and a fixing seat (10). The maintaining supporting member (6) is fixedly disposed on the synchronizing shaft (8) by a bolt through hole (13), and six position-restricted blocks of the maintaining supporting member (6) are used for the position restriction of the position-restricted pins (5) of the main shaft (7). The release maintaining sheet (11) is fixedly disposed on the synchronizing shaft (8) by a fastening screw hole (12). By adopting the form of the spring operation mechanism of the ZN-63 indoor fixing packaging type high voltage vacuum circuit breaker, the lengths of the position-restricted blocks of the maintaining supporting member (6) can be changed, and can be used for the position restriction of the position-restricted pins of the main shaft on the different positions, and in addition, the tension length of the connecting spring can be changed, and the energy stored by the connecting spring can be reduced, and therefore the loosening phenomenon of the connecting spring can be simulated in the short-time working period of the circuit breaker, the connecting time and the connecting speed of the circuit breaker can be changed, and the characteristic signals of the faults can be acquired.
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID

Portable folding automobile handrail

The invention discloses a portable folding automobile handrail. The portable folding automobile handrail comprises a U-shaped mounting plate and a connecting seat; side walls of the connecting seat and the U-shaped mounting plate are in contact connection with each other; a circular groove is formed in the side wall of the connecting seat; a cylinder is fixedly connected to the side wall of the U-shaped mounting plate; one end, far away from the U-shaped mounting plate, of the cylinder is rotationally connected to the interior of the circular groove; a plurality of fixing mechanisms are arranged on the side wall, far away from the U-shaped mounting plate, of the connecting seat; a threaded rod is rotationally connected to the inner wall of an outrigger of the U-shaped mounting plate; one end, far away from the outrigger of the U-shaped mounting plate, of the threaded rod runs through the outrigger on the other side and is fixedly connected with a rotating knob; a first thread and a second thread are arranged on the threaded rod; and the thread rotation directions of the first thread and the second thread are reverse to each other. According to the portable folding automobile handrail, a supporting effect on the left arm of a driver can be realized and aches of the left arm caused by long-time hanging can be effectively relieved.
Owner:YANCHENG GAOYUE MACHINERY

Leg strength exercising device for sports

The invention discloses a leg strength exercising device for sports. The device comprises a placing plate, wherein strength adjusting mechanisms are symmetrically welded to the two sides of one end ofthe placing plate, each strength adjusting mechanism comprises an L-shaped plate, a moving plate, a manual telescopic rod, a reset spring, a positioning plate and a lead screw, and the L-shaped plates are symmetrically welded to the two sides of one end of the placing plate; a movable plate is connected to one end of the inner wall of the L-shaped plate in an attached mode, manual telescopic rodsare welded to the four corners of one end face of the movable plate correspondingly, a positioning plate is welded to one end face of each manual telescopic rod, through the movable plate, the positioning plates, lead screws and connecting ropes, the position of the movable plate can be conveniently limited, and the phenomenon that the position of the movable plate moves is prevented; and meanwhile, the position of a positioning plate can be conveniently adjusted, the stretching length of a reset spring is changed, the tension of the reset spring can be conveniently adjusted, then the force needed by leg training of a user can be conveniently adjusted, and therefore the application range of the device is widened.
Owner:盐城盐龙文化体育产业投资有限公司

Iron gallium alloy series drive inverse magnetostrictive driving device and using method

The invention discloses an iron gallium alloy series drive inverse magnetostrictive driving device which comprises a rotating electric motor and an driving device; the driving device comprises an upper magnetic iron core (1) and a lower magnetic iron core (3), a gap is formed between the upper magnetic iron core (1) and the lower magnetic iron core (3), and a permanent magnet (4) and an iron gallium alloy (5) which are parallel to each other are arranged in the gap between the upper magnetic iron core (1) and the lower magnetic iron core (3); the iron gallium alloy (5) penetrates through the upper magnetic iron core (1) ; relative to the gap between the upper magnetic iron core (1) and the lower magnetic iron core (3), a rotor iron core (6) is arranged on an output shaft of the rotating electric motor, and the rotor iron core is matched with the gap between the upper magnetic iron core (1) and the lower magnetic iron core (3) in a clearance fit mode.
Owner:ZHEJIANG SCI-TECH UNIV

Metal belt type belleville spring with adjustable elastic force

The invention belongs to the technical field of belleville springs, and discloses a metal belt type belleville spring with the adjustable elastic force. The belleville spring comprises a pressing plate assembly and elastic sheet assemblies, wherein the pressing plate assembly comprises an upper pressing plate and a lower pressing plate, at least one elastic sheet assembly is arranged and is arranged between the upper pressing plate and the lower pressing plate in a coaxial arrangement mode, the belleville spring further comprises at least one elastic force adjusting assembly, the elastic forceadjusting assemblies comprise limiting pieces and gasket pieces, the limiting pieces are arranged in the elastic sheet assemblies, and the gasket pieces are arranged between two adjacent elastic sheet assemblies. According to the metal belt type belleville spring with the adjustable elastic force, the belleville spring is formed on the basis of the plurality of elastic sheet assemblies, one elastic force adjusting assembly is arranged between every two adjacent elastic sheet assemblies, whether one single elastic sheet assembly can be stretched or not is defined based on the elastic force adjusting assemblies corresponding to the single elastic sheet assembly, then the number and the stretching length of the elastic sheet assemblies actually applied in the overall belleville spring are changed, and then the elastic force magnitude is changed so as to meet different use requirements.
Owner:扬州凯润弹簧科技有限公司

Spring with limiting structure and using method thereof

The invention discloses a spring with a limiting structure and a using method thereof. The spring comprises a base plate, an adjusting assembly, a positioning sleeve, a supporting rod, an adjusting lead screw, a main pipe and a second hand wheel, the adjusting assembly is arranged at the bottom of the base plate, the positioning sleeve is fixedly connected to the top of the base plate, the supporting rod is fixedly connected to the center of the bottom of the inner wall of the positioning sleeve, and the supporting rod is slidably sleeved with the main pipe; and the spring is compact in structure, easy and convenient to operate and high in practicability, the position of a mounting plate can be adjusted through the adjusting assembly, and therefore the spring can be selectively mounted according to use requirements, clamping can be achieved, threaded connection can also be achieved, the use flexibility of the spring is improved, the adjusting lead screw can be driven to rotate throughthe second hand wheel, so that the total length of the adjusting main pipe and the supporting rod is adjusted, the extension length of the spring can be changed at the moment, the elasticity of the spring can be changed, the spring can be limited, and the actual use effect of the spring is improved.
Owner:厦门磊峰五金弹簧有限公司

Bridge construction supporting method

The invention discloses a bridge construction supporting method which is characterized by comprising the following steps: S1, pre-adjustment before supporting: a supporting device is moved to a position needing to be supported in advance, then a motor is started, and the motor drives a supporting seat to quickly ascend until the bottom of an inner cavity of the supporting seat is in contact with I-shaped steel at the bottom of a steel frame bridge; s2, fixing between the supporting device and the bridge: starting an air pump, quickly pumping out air in a cavity, keeping a vacuum state, quickly and tightly sucking the bottom of the inner cavity of the supporting seat and I-shaped steel at the bottom of the steel-framed bridge, then moving a reinforcing plate towards the inner side until the reinforcing plate is in contact with the I-shaped steel, and finally rotating a locking bolt to fix the supporting device and the bridge. The I-shaped steel is rotated and moved downwards under the assistance of the nut, so that the sliding seat is limited, and the I-shaped steel is secondarily fixed; s3, protection work is carried out; and S4, protecting the protection mechanism.
Owner:姚平

Hydraulic braking system of railway vehicle

The invention discloses a hydraulic braking system of a railway vehicle. The system comprises a brake frame, a variable-frequency pusher, a brake arm, a manual brake mechanism, a tie rod, a brake huband a brake mechanism, wherein the brake hub is arranged at the bottom of the outer side of a hub, and the brake mechanism is installed on the inner side of the brake hub; the brake arm is installed on the brake hub, the top end of the brake arm is installed on the manual brake mechanism, and the bottom end of the brake arm is installed on the brake frame; the variable-frequency pusher and the tierod are arranged between the brake frame and the manual brake mechanism respectively; the two ends of the variable-frequency pusher and the two ends of the tie rod are arranged on the brake frame andthe manual brake mechanism respectively. The system has the advantages that the brake mechanism is installed, the angle does not need to be adjusted, long-time brake locking and power supply fault electric locking functions are added, detachment and installation are convenient, and abrasion compensation and abrasion limit faults of the brake mechanism are prompted.
Owner:深圳市勇拓兴科技有限公司

A multi-bud section sugarcane seed metering device

ActiveCN110140494BAdjustable opening timingChange stretch lengthPlantingAgricultural engineeringSugar cane
The present invention provides a multi-bud segment sugarcane seed metering device, comprising a support; a seed guide box assembly is installed on the top of the support, and a transmission mechanism and a clamping assembly are installed in the support. The clamping assembly of the present invention The structure and cooperation of the components and the seed guide box components are ingenious. The seed guide plate and the movable claw are opened at the same time to realize the cooperation process of the falling and clamping of sugarcane seeds. If the horizontal position of the lower cylinder and the upper cylinder is changed, the opening timing of the movable claw can be adjusted. If the telescopic length of the push rod is changed, the size of the opening of the two seed guide plates and the timing of opening can be changed, so as to facilitate the adjustment of the specific conditions of seeding for different sugarcane species and different working conditions; All are equipped with non-slip anti-slip pads, made of soft rubber or water-based resin, which have a good protective effect on the seed buds during the clamping and transportation of sugarcane seeds; ensure the position of the seed buds before and after the seeding and transportation of the sugarcane seeds. Consistency, to ensure that the seed buds are in a horizontal position when the sugarcane seeds are discharged.
Owner:NANNING UNIV

Three-degree-of-freedom self-walking minitype shield machine

The invention relates to a three-degree-of-freedom self-walking minitype shield machine comprising a cutting head, a drive motor, a propelling oil cylinder, a supporting oil cylinder, a spiral conveyer, an inner support frame, an outer support frame, a hydraulic valve bank and a shield. In the invention, the cutting head adopts pick-shaped teeth cutting and realizes three-degree-of-freedom rotary cutting through an adjusting oil cylinder; a rock crush principle is as follows: coal rocks are subjected to crushing treatment through the pick-shaped teeth cutting and a secondary crushing mechanism by adopting a secondary crushing technology; a propelling system adopts two double-acting oil cylinders, a supporting and obstructing system adopts cross type double-acting oil cylinders, and rear support-front propelling and front support-rear contraction type stepping walking is realized through the control of a hydraulic system; a deslagging mode is as follows: slag and muddy water are conveyed into a conveying pipe by adopting the spiral conveyer, and deslagging is carried out by combining with negative pressure suction. According to the invention, the directional control and the large curvature radius curve walking of the three-degree-of-freedom self-walking minitype shield machine disclosed by the invention are realized; the slant stagger of a drill hole is prevented; the autonomous walking of the three-degree-of-freedom self-walking minitype shield machine is realized; long-distance hole drilling is ensured; and the problem of difficult deslagging of a pipe jacking technology is solved, and therefore, the gas is more sufficiently discharged.
Owner:CHINA UNIV OF MINING & TECH

Pipeline inner wall spraying device

The invention relates to a pipeline inner wall spraying device. The pipeline inner wall spraying device comprises prepositioned stators, postpositioned stators and a support column, wherein one end of the support column is fixedly connected with one ends of the prepositioned stators, the other end of the support column is fixedly connected with one ends of the prepositioned stators, spray heads are arranged at the other ends of the prepositioned stators, at least three groups of first landing legs are uniformly distributed on the circumferential surfaces of the prepositioned stators, first motors for driving the spray heads to rotate are arranged in the prepositioned stators, spray pipe adaptors are arranged at the other ends of the postpositioned stators, at least three groups of second landing legs are uniformly distributed on the circumferential surfaces of the postpositioned stators, the spray heads are connected with the spray pipe adaptors by guide pipes, and rolling wheels and second motors for driving the rolling wheels are arranged at the tail ends of the second landing legs. According to the pipeline inner wall spraying device, at least three prepositioned stators and the postpositioned stators with driving rolling wheels are uniformly distributed at two ends of the support column respectively, so that the spraying device can walk flexibly.
Owner:YANTAI XINHAI MINING MACHINERY

A spring circuit breaker fault simulation device

The invention discloses a spring circuit breaker fault simulation device comprising an energy storage motor (1), a small chain wheel(2), a large chain wheel(3), a cam (4), a position-restricted pin (5), a maintaining supporting member (6), a main shaft (7), a synchronizing shaft (8), a connecting electromagnet (9), a connecting spring (14), a release maintaining sheet (11), and a fixing seat (10). The maintaining supporting member (6) is fixedly disposed on the synchronizing shaft (8) by a bolt through hole (13), and six position-restricted blocks of the maintaining supporting member (6) are used for the position restriction of the position-restricted pins (5) of the main shaft (7). The release maintaining sheet (11) is fixedly disposed on the synchronizing shaft (8) by a fastening screw hole (12). By adopting the form of the spring operation mechanism of the ZN-63 indoor fixing packaging type high voltage vacuum circuit breaker, the lengths of the position-restricted blocks of the maintaining supporting member (6) can be changed, and can be used for the position restriction of the position-restricted pins of the main shaft on the different positions, and in addition, the tension length of the connecting spring can be changed, and the energy stored by the connecting spring can be reduced, and therefore the loosening phenomenon of the connecting spring can be simulated in the short-time working period of the circuit breaker, the connecting time and the connecting speed of the circuit breaker can be changed, and the characteristic signals of the faults can be acquired.
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID

Crane sling power generation system, crane sling and crane

The invention discloses a crane sling electricity-generating system, a crane sling and a crane. The crane sling electricity-generating system comprises a movable pulley, a generator, a storage battery and a feedback unit, wherein the movable pulley is arranged on a crane sling frame and is connected with a fixed pulley block on a crane jib through a wire rope; during rotation, the movable pulley can drive a rotor shaft of the generator to rotate; an output end of a generator circuit is connected with the storage battery through a connection device; and when the sling moves down, the connection device ensures that the generator charges the storage battery, the feedback unit is used for detecting the electric quantity of the storage battery and a control device controls the operation state of the electricity-generating system according to the detection result of the feedback unit. The crane sling electricity-generating system can make full use of the kinetic energy of the movable pulley to generate electric energy; the kinetic energy of the sling movable pulley is converted into the generated electric energy, which not only provides sufficient electric energy for the sling, but also reduces the load of the crane dolly mechanism.
Owner:SANY MARINE HEAVY IND
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