106results about How to "Reduce the momentary impact" patented technology

The present invention relates to a wave energy conversion and power generation system. Said invention is characterized by that it utilizes a flexible surface which can be flexibly bent and fluctuated with wave to receive drive of wave, and utilizes a rope whose one end is tied on the described flexible surface and another end is winded round a rotating wheel to pull said rotating wheel, so that said rotating wheel can be used for converting wave energy into mechanical energy, then utilizes a hydraulic system and a power generator unit to convert the mechanical energy into electric energy.

The invention provides a wave power generating system with a floating-body-based rope pulley, relating to a wave energy power generating system and comprising a wave energy collecting part, a power generator and a base, wherein the wave energy collecting part has the mechanism of: pushing a floating body by waves, tightening a rope, further driving a rotating wheel arranged on the floating body to apply work, and outputting mechanical energy to realize the collection of wave energy; and in a wave dropping step, reversely rotating the rotating wheel by using small force, withdrawing the rope, pulling and withdrawing in the way, and continuously circulating. The wave energy collecting part is used for supplying power to the power generator to generate power. The wave power generating system can adapt to most shapes of waves and has the advantages of strong wind and wave resistance, low cost and easy maintenance.

The invention relates to a dual-rope type float body rope wheel sea wave power generation system, belonging to a wave energy generation system. In the invention, wave is pushed by a float body or an oscillating plate; one rope of which one end is tied thereon and the other end is wound on a rotating wheel to pull the rotating wheel to convert the obtained irregular wave push power into rotating power; during the wave fall-back period, another rope drives the rotating wheel to invert by the gravity of a heavy object to take back the rope; the rotating wheel realizes energy transmission and collection by a ratchet wheel mechanism and a hydraulic system so as to realize power generation via a generator. As for large-scale wave energy generation, the float body can form an array surface. The system can be adapted to waves with most waveforms, can efficiently absorb wave energy, has strong wind wave resistance and low cost and does not rely on shore-based operation.

The invention relates to a flue gas valve, and discloses a sealing structure for a rotary shaft of a flue gas valve. The sealing structure comprises a packing pipe. A pressing ring, first buffering rings, a compression spring, a graphite sealing ring and second buffering rings which are sequentially butted to one another are arranged in the packing pipe, an inner rib is arranged at one end of the packing pipe, an outer rib is arranged at the other end of the packing pipe, an outer flange is arranged at the end, which is far away from the first buffering rings, of the pressing ring and is connected with the outer rib by assembling bolts, an adjusting gap is reserved between the outer flange and the outer rib, the second buffering rings are butted to the inner rib, the outer peripheral surface of the graphite sealing ring is hermetically connected with the inner peripheral surface of the packing pipe, the flue gas valve comprises the rotary shaft, the rotary shaft is penetratingly arranged in the graphite sealing ring and is hermetically butted to the graphite sealing ring, matching surfaces of the rotary shaft and the graphite sealing ring are conical surfaces, and small-diameter ends of the conical surfaces are close to the inner rib. The sealing structure for the rotary shaft of the flue gas valve has the advantages that a shaft end of the rotary shaft of the flue gas valve can be sealed by the sealing structure, and sealing effects can be adjusted; the problem of leakage at a shaft end of an existing flue gas valve can be solved by the aid of the sealing structure.

Provided is an active protection device, pertaining to the technical field of car safety.The active protection device is characterized in that an anti-collision beam is divided into a fixed beam and a movable beam; the movable beam is installed on the fixed beam and can perform horizontal movement by stretching and retracting relative to the fixed beam; a retractable locking device of the movable beam is arranged on the fixed beam and can be used for locking the retraction state of the movable beam; a stretching driving unit of the movable beam is arranged on the fixed beam and used for driving the movable beam to stretch outwardly; a stretching locking device of the movable beam is arranged on the fixed beam; a spring buffer device is arranged between the fixed beam and the movable beam; the movable beam is capable of outwardly stretching and locking to receive collision; a spring protection device is opened to buffer collision; and a distance measurement device is arranged on a car and connected with a computer which is also connected with retractable locking device of the movable beam.The active protection device has following advantages: without increasing total length of the car and buffering impact force, larger physical collision space is obtained.

The invention discloses an irregular concrete column carrying device. The irregular concrete column carrying device comprises an inner ring and an outer ring; the outer ring is fixedly installed on the periphery of the inner ring; a pressure relief device and a lifting ring are fixedly installed on the outer ring; an even number of hold-down devices are fixedly arranged at the inner side of the inner ring; and furthermore, the multiple hold-down devices are uniformly distributed in the same vertical plane at the inner side of the inner ring along the circumference. When the irregular concretecolumn carrying device in the invention is used, the multiple hold-down devices work synchronously by utilization of the same hydraulic pump; depending on change of hydraulic pressure, connecting rodsin the multiple hold-down devices stretch out in different lengths; furthermore, concrete columns having irregular section shapes are clamped tightly; furthermore, by utilization of the pressure relief device on the outer ring, instantaneous impact force can be effectively buffered when the concrete columns are unloaded or drop inadvertently; and thus, the purpose of protecting the hold-down devices and the concrete columns is achieved.

The invention discloses water slide recreational equipment. The water slide recreational equipment comprises a slide bed board, a seat, a sliding block and a water sac, wherein guide rails are arranged on the two sides of the slide bed board in the length direction, and two strip-shaped grooves are formed in each guide rail in the length direction; the seat comprises a seat board and a backup plate, a protection rod is connected to the backup plate in a rotary mode, two lugs are arranged on the bottom portions of the two sides of the seat plate and in sliding fit with the guide rails, and the seat board is connected to the guide rails in a sliding mode; the sliding block in sliding fit with the guide rails is arranged on the side, close to the lower ends of the guide rails, of the seat, and the water sac is arranged at the lower ends of the guide rail.

The invention discloses an electric hoist with a low-friction type spherical hinge, and belongs to the field of electric equipment.The electric hoist with the low-friction type spherical hinge comprises an electric hoist body, the lower end of the electric hoist body is connected with a spherical hinge connecting shaft, and the outer end of the spherical hinge connecting shaft is wrapped with a hard protective shell barrel; the flexible buffer hemispheres are symmetrically and fixedly mounted in the spherical hinge connecting shaft, and through cooperative use of the flexible buffer hemispheres and the flexible anti-friction blocks, instantaneous traction force generated when the electric hoist is started is decomposed and offset, and damage caused by instantaneous impact force to the spherical hinge connecting shaft and the flexible buffer hemispheres is reduced; when the flexible buffer hemisphere deforms due to traction, the surface of the flexible anti-friction block is lubricated, abrasion of the surface of the flexible buffer hemisphere and aging of rubber are reduced, the service life of the device is effectively prolonged, the damping effect of the spherical hinge connecting shaft during instantaneous traction is improved, and then the use safety of the electric hoist body is effectively improved.

A double-protection connection device with a buffer overhead ground wire includes a connecting rod, a Fixture, a triangular connection plate, a main load-bearing terminal ring, a main load-bearing wire clamp, a spare connecting guide, a Backup connection pillar and standby wire clip, By setting a spare connecting guide, A standby connection guide post and a standby wire clamp form a standby connection piece, so that the main load-bearing terminal ring or the main load-bearing wire clamp can play a load-bearing connection role after the main load-bearing wire clamp is damaged, At the same time,a cushion spring is arranged between the standby connection guide sleeve and the standby connection guide post, As a result, after the main load-bearing terminal ring or the main load-bearing wire clamp is broken, the spare connector is shifted from being slightly stressed to undertaking all the tensile forces of the overhead wire, and the instantaneous impact force is buffered to protect the spare connector. The invention provides double protection for the overhead ground wire connection and reduces the instantaneous impact force with its own buffer.

The invention relates to a method for manufacturing an aluminum-silicon target material. The method comprises the following steps of: providing an AlSi ingot casting step, a drawing step, a primary upsetting step, an intermediate heat treatment step, a secondary upsetting step, a preheating treatment step, a calendaring step and an annealing heat treatment process step, wherein cold drawing operation is used in the drawing step, and a forging ratio X1 in the cold drawing operation is gerater than or equal to 1 and less than 2; in the primary upsetting step, a forging ratio X2 is greater than or equal to 2 and smaller than 3, and cold heading operation is used for primary upsetting; in the intermediate heat treatment step: a product is kept within a first preset temperature range, and is quickly put into cold water after being subjected to heat preservation for first preset time; in the secondary upsetting step, a forging ratio X3 is greater than or equal to 2 and smaller than 3, and cold heading operation is used for secondary upsetting; in the calendaring step: multi-pass calendaring is performed on the product, and reducing rolling reduction along with increase of calendaring passes; and in the annealing heat treatment process step: in an annealing temperature range, heat preservation is performed for third time, and water cooling treatment is performed to form a final targetproduct. According to the method, the forging ratio is reasonably controlled, water cooling is adopted for cooling, so that Si element precipitation is reduced, and therefore the microstructure and the machining performance of the target material are guaranteed.

A friction-jaw clutch. Driving disc is equipped on the driving wheel, and driven disc is equipped on the driven shaft. The driven disc and the driven shaft are tabled at radial direction, and skidding bond at axial direction; and driven spring is equipped on the driven shaft. The character is that dogtooth or beard is equipped on the driving disc, the correspondent is equipped on the driven disc, but they are asymmetrical shape. Backlash of the dogtooth and beard is less than four millimeter, or fit angle is less than four degree. The invention has the advantage of friction and jaw clutch.

The invention provides an adjustable import and export cargo hoisting structure with a buffering effect, and relates to the technical field of import and export cargo transportation. The adjustable import and export cargo hoisting structure with the buffering effect comprises a mounting shell, a fixing plate is fixedly mounted inside the mounting shell, a strip-shaped through hole is formed in the surface of the fixing plate, limiting stop blocks are fixedly mounted on the two sides of the fixing plate, and a pressing plate is arranged in the position, above the fixing plate, of the mounting shell. According to the adjustable import and export cargo hoisting structure with the buffering effect, through the unique design of a hoisting frame, in the actual use process of the hoisting structure, regular objects can be hoisted through a second suspension hook, gravity is conveniently shared, irregular cargoes can be suspended and hoisted through a first suspension hook, by arranging a spring damping structure, the structure can reduce instantaneous impact force generated during hoisting in actual use, and can also reduce shaking of the cargoes during hoisting.

The invention discloses a low-noise air pump, comprising an air pump body. The air pump body comprises a pump head cover. The bottom of the pump head cover is provided with a relief chamber; the upperend face of the pump head cover is provided with an exhaust head. The low-noise air pump also comprises an air flow buffer device that comprises a buffer cover; the buffer cover hermetically covers the upper end face of the pump head cover; the upper end face of the buffer cover is provided with a via hole allowing passage of the exhaust head; the bottom face of the buffer cover is provided withan air flow buffer chamber; the upper end face of the pump head cover is provided with an air flow through hole that communicates the relief chamber with the air flow buffer chamber. The low-noise airpump has the advantages that part of air in the relief chamber is discharged into the air flow buffer chamber via the air flow through hole so that transient impact of air discharged from the exhausthead can be effectively relieved; noise due to outflow impact of air at the exhaust head can be effectively reduced, and two-stage denoising is achieved; when the air in the air flow buffer chamber reflows into the relief chamber and flows out of the exhaust head, outflow travel of the air can be greatly extended, and noise can be further reduced; therefore, the low-noise air pump has good denoising effect.

The invention provides a method and device for controlling the strip shape of strip steel. The method comprises the steps of controlling the variable quantity of the perpendicularity of a center spindle of a coiling machine to be less than 0.1 mm/m and controlling the variable quantity of the levelness of the center spindle to be less than 0.1 mm/m; controlling the rising time of an outer supporting arm of the coiling machine to be 6-8 s; acquiring coordinates, the serial number, the maximum rolling width, the practical width, the practical strip steel total tension, the maximum coiling tension, the tension effect amplification coefficient and the compensation coefficient of the strip steel in a strip shape instrument region and the rotating angle of the coiling machine; compensating for the horizontal deviation of the outer supporting arm according to the coordinates, the serial number, the maximum rolling width, the practical width, the practical strip steel total tension, the maximum coiling tension, the tension effect amplification coefficient and the compensation coefficient of the strip steel in the strip shape instrument region and the rotating angle of the coiling machine;conducting compensation adjustment on the horizontal deviation of the outer supporting arm in the coiling process in real time. The stability of the coiling process is improved. The straightness of the strip shape is further improved. Deviation of the strip steel during on a subsequent treatment line is avoided.

The invention relates to the technical field of precision forging, in particular to a precision forging mold capable of conducting automatic lateral pressing and vibration reducing and a vibration reducing method for the forging mold. An upper movable block (a lower movable block) is driven by a first oil cylinder (a second oil cylinder) to get away from an upper fixed block (a lower fixed block), an upper mold body (a lower mold body) can be put into an upper installing groove (a lower installing groove) of an upper mold base (a lower mold base) accordingly, then the first oil cylinder (the second oil cylinder) stops driving, the upper movable block (the lower movable block) presses the upper mold body (the lower mold body) under the effect of a compression spring, the upper mold body (the lower mold body) is fixed accordingly, and the upper mold body (the lower mold body) is quite convenient to replace. When forging is carried out, as one side of the upper mold body and one side of the lower mold body abut against the upper fixed block and the lower fixed block respectively, automatic positioning can be achieved, large instantaneous impact force is generated when forging is carried out, and the impact energy can cause mold vibration; and due to the effect of the compression spring, the horizontal direction impact energy is absorbed, the instantaneous impact force is reduced accordingly, automatic resetting is achieved, and the service life of the mold is prolonged.

The invention discloses a production method of a striker board of an ice hockey stick. The production method includes the steps of cutting a sheet of striker board filler with a tool; connecting the filler with a handle preforming tool and attaching carbon fiber or glass fiber yarn to the front and back of each of the handle preforming tool and the striker board layer by layer; cutting a buffer film into strips; pricking the buffer film to obtain a plurality of evenly arranged air holes; attaching the buffer film to one side surface on the side of the striker board; attaching release cloth to the striker board to obtain a preformed striker board body; and forming the preformed striker board body in a striker board forming die. The production method has the advantages that transient impact of a puck upon the sticker board is reduced, the sticker board is resistant to damage, and the service life of the striker board is prolonged; shock transmitted from the ice hockey stick to hands of a user is reduced; and the puck rebounded by the striker board is well controllable, and better striking can be obtained.

The invention discloses a synchronous wrench for bolts arranged in an annular array mode. The synchronous wrench comprises a main body shell. According to the invention, a plurality of bolts can be rotated to bolt holes in which the bolts need to be mounted at the same time under the effect of synchronous rotation, therefore, the phenomena that due to the fact that a single bolt is stressed, the fastening angle of a connecting part deviates and the threads are damaged, the service life is short can be effectively prevented. The protection capability on the bolt structure is improved; potentialsafety hazard degree reduction, an annular array type longitudinal and transverse staggered rod body linkage mechanism is arranged; longitudinal and transverse cross arrangement is utilized; therefore, the transmission effect of rotation is realized; meanwhile, due to point contact and small friction force, longitudinal movement is not greatly affected, the efficiency is improved, and potential safety hazards in use are reduced; and in addition, the wrench is provided with an annular array spiral spring type maximum rotating strength control mechanism, and the phenomenon that a threaded structure is damaged due to the fact that the rotating strength is too large is avoided.