3098results about "Engine lubrication" patented technology

The invention discloses an energy-saving stage lamp moving and steering control adjusting device and a using method, and relates to the technical field of wastewater treatment.The energy-saving stage lamp moving and steering control adjusting device comprises a mounting base, a rotating base is arranged at the top of the mounting base, a lamp is arranged in the rotating base, and a rotating rod is fixedly connected to the bottom of the rotating base; according to the scheme, the memory metal wire can be lengthened along with the change of the temperature, so that the amplitude of rotation of the insulation cover driven by the traction piece is changed along with the change of the temperature; therefore, when the temperature is higher, the exposed area of a through groove formed in the outer side of the insulating cover and a groove formed in the inner side of the fixing ring is larger, the magnetic force borne by the first magnetic plate is larger, then the amount of liquid sprayed by the lubricating assembly is larger, and automatic adaptive adjustment is carried out.

A hybrid lubricating module includes a housing and an assembly which consists of at least two elements and has an axial hole run through by a shaft. At least one of the elements has one set of multiple notches on one end surface communicating with the axle hole. The housing has a through axial cavity to encase the assembly. The outer wall surface of the assembly and the inner wall surface of the housing are assembled to each other to form at least one storage chamber to store lubricating media. The multiple notches on at least one adjacent element form at least one set of fine flow passages communicating with the axial hole and the storage chamber.

The invention relates to the technical field of vibration measurement, and particularly discloses a guide plate online dynamic amplitude anti-deviation laser monitoring device which comprises a fixing frame, a mounting groove is formed in the outer surface of the upper end of the fixing frame, a movable rod used for supporting a guide plate is fixedly connected to the inner side of the mounting groove, and a limiting assembly is arranged on the outer side of the movable rod. The limiting assembly comprises a notch formed in the outer surface of the guide plate, a limiting sleeve is fixedly connected to the outer surface of the movable rod, a pressing crack is formed in the outer surface of the limiting sleeve, and the limiting sleeve penetrates into the notch. By arranging the limiting assembly, when the position of the guide plate deviates, a limiting sleeve can play a role in correcting the deviation of the guide plate, so that the position of the guide plate is always in a proper position, and the influence of the position deviation of the guide plate on the measurement precision of the vibration amplitude of the guide plate can be reduced to a certain extent; and the monitoring error can be reduced to improve the monitoring precision.

The invention discloses an electric capstan with multiple safety protections.The electric capstan comprises a capstan assembly, the capstan assembly comprises a cable body, two first protection assemblies are arranged at the bottom of the capstan assembly, and a second protection assembly is arranged between the outer surfaces of the two first protection assemblies; and two first protection assemblies. According to the electric capstan with the multiple safety protections, when a laser scanner detects that a certain position of the cable body is damaged, the upper portion of the damaged position is clamped and fixed through the four clamping blocks located on the upper portion, and then the four clamping blocks located on the lower portion are moved to the position below the damaged position to clamp and fix the cable body; multiple protection of the cable body in the electric capstan is achieved, and the problem that in the prior art, when a heavy object is lifted by a cable in the electric capstan, a certain section of the cable is damaged, the cable is broken, and the heavy object falls off is solved.

The invention relates to a repeatedly detachable magnetic composite water lubricated bearing and a maintenance method thereof.The water lubricated bearing comprises a cylindrical bearing seat surrounding a ship stern shaft and a permanent magnet assembly detachably connected with the bearing seat, a cylindrical sliding bearing is arranged on the inner side of the bearing seat, a notch is formed in the outer side face of the sliding bearing, and the permanent magnet assembly is detachably connected with the bearing seat; the notch penetrates through the sliding bearing in the axis direction of the sliding bearing, a containing groove used for containing the permanent magnet assembly is defined between the notch and the inner side wall of the bearing seat, when the water lubrication bearing is arranged on the outer side of the ship tail shaft in a sleeving mode, the containing groove is located over the ship tail shaft, and the permanent magnet assembly is in sliding fit with the containing groove in the axis direction of the sliding bearing. According to the scheme, the permanent magnet is configured to be in a detachable form, and the permanent magnet can be conveniently maintained after being demagnetized, so that the maintenance cost of the water-lubricated bearing is reduced, and the load of the water-lubricated bearing can be reduced for a long time.

The utility model discloses an air cylinder facilitating lubrication of a piston rod, and relates to the technical field of air cylinders. The air cylinder comprises an air cylinder body. The air cylinder body is started to drive the extrusion assembly to move, lubricating oil in the extrusion assembly can be pushed in the retraction process of the extrusion assembly, and then when the lubricating oil in the extrusion assembly is pushed into the lubricating assembly, the lubricating oil makes contact with the outer surface of a piston rod in the air cylinder body; then the lubricating oil enters the backflow assembly, under the action of the backflow assembly, the lubricating oil in the backflow assembly can be slowly pushed to enter the lubricating assembly, the lubricating oil in the backflow assembly flows into the extrusion assembly, and in the flowing process, the lubricating oil can make full contact with a piston rod in the air cylinder body; and therefore, the air cylinder can be fully lubricated and is prevented from being abraded to influence the use of the air cylinder body.

The invention discloses an active lubrication brake cylinder for a railway wagon and the railway wagon, and relates to the field of railway wagon control systems.The active lubrication brake cylinder comprises a fixed gear ring arranged at the bottom of a spinning cylinder body, and a piston is arranged in the spinning cylinder body; the matching gear ring and the fixed gear ring are arranged in parallel, and the side, facing the fixed gear ring, of the matching gear ring is a convex tooth surface; the projection of the S-shaped spiral elastic pieces in the axial direction of the piston is in a circular arc shape, one ends of the S-shaped spiral elastic pieces are connected with the side, away from the fixed gear ring, of the matched gear ring, the S-shaped spiral elastic pieces are symmetrically arranged in the circumferential direction of the matched gear ring, and the other ends of the S-shaped spiral elastic pieces are connected with a base of the piston; the brake cylinder structure meets the modification of the existing brake cylinder, is simple in structure and low in modification cost, and also has good manufacturability and maintainability.

The invention discloses a battery pack water connector automatic assembling machine and assembling method, the battery pack water connector automatic assembling machine comprises a conveying device, and the conveying device is sequentially provided with a base feeding station used for placing a base provided with a spring; the detection station is used for identifying the base and detecting whether a spring is mounted or not; a material distributing device, an oil brushing device and a moving device are arranged on the connector feeding station, the material distributing device is used for moving the two connectors to a first position and a second position correspondingly, and the oil brushing device is used for brushing oil on the clamped parts of the connectors and the base; the moving device is used for grabbing the connector to move to the oil brushing device for oil brushing and then moving and placing the connector on the base, and the rotating device is installed on the moving device. The pressing station is used for pressing the joint on the base; and the discharging station is used for discharging. Therefore, automatic assembly is achieved, the assembly precision and the assembly efficiency are improved, and meanwhile the problem that springs are prone to being omitted during manual assembly is solved.

The invention belongs to the technical field of metal plate wire drawing machines, and discloses a tension-adjustable aluminum gusset plate wire drawing machine which comprises a conveying plate, two supporting plates fixedly arranged on the two symmetric sides of the top of the conveying plate and mounting boxes fixedly mounted on the tops of the supporting plates, and moving grooves are formed in the two symmetric sides of the interior of the conveying plate; the wire drawing mechanism is located in the center of the top of the conveying plate, and the wire drawing mechanism is used for conducting wire drawing machining on the aluminum gusset plate; the lubricating mechanism is arranged in the mounting box and is used for lubricating the wire drawing mechanism; according to the aluminum gusset plate wire drawing machine, through cooperation of the wire drawing mechanism, the lubricating mechanism and other structures, uniform lubrication of the wire drawing roller is conveniently achieved, and the problems that in the wire drawing process of an existing aluminum gusset plate wire drawing machine through a guide roller, due to insufficient lubrication, uneven lubrication and low efficiency, the roller surface is scratched, and the guide roller is abraded are solved; therefore, the problem of tension imbalance detection distortion is solved.

The present invention discloses a grease injection system for a plug valve and a fracturing device. The grease injection system is used to inject grease into the plug valve. The grease injection system includes a power mechanism and a flow control valve group. The power mechanism includes a driving motor, a hydraulic pump, and a hydraulic oil tank. The driving motor is connected to the hydraulic pump. The hydraulic pump has an oil inlet and a plurality of oil outlets. The oil inlet is communicated with the hydraulic oil tank. The flow control valve group includes a valve body and a control valve. The valve body has a first oil passage port, a second oil passage port, and a third oil passage port. The first oil passage port is communicated with the second oil passage port. The second oil passage port and the third oil passage port are communicated with one or more of the oil outlets. A control valve is arranged between the first oil passage port and the third oil passage port to control the communication or disconnection between the first oil passage port and the third oil passage port. The above solution can solve the problem of great difficulty in injecting grease into the plug valve.

The invention relates to the technical field of universal joint transmission, in particular to a universal joint transmission shaft assembly which comprises a cross shaft, four bearing sleeves are connected to the cross shaft, roller pins are arranged between the bearing sleeves and the cross shaft, oil seals are installed on one sides of the bearing sleeves and make contact with the surface of the cross shaft, and an oil injection pipeline is arranged in the cross shaft. According to the design, the driving assembly is arranged on the cross shaft, a worker can control the second circular ring to move through the driving assembly, and the second circular ring can pull the oil seal on the side where waste oil is completely discharged so that the oil seal can be better attached to the cross shaft; when oil is injected, waste oil can be discharged from the position between the oil seal on the side with the smaller gap and the cross shaft, so that the amount of fresh oil flowing out of the cross shaft during oil injection is reduced, waste of the fresh oil is avoided, the situation that the waste oil cannot be discharged from the oil seal on the side with the smaller gap is avoided, the lubricating effect is ensured, and the service life is prolonged.

The invention provides an impact rotary drilling hydraulic control system of a dinting machine, which belongs to the technical field of hydraulic control systems and comprises a variable pump, a pilot oil source control valve group, a proportional multi-way valve, a shuttle valve I, a one-way pressure reducing valve, a shuttle valve II, a drilling machine pilot handle group, an impact rotary drilling machine, a bidirectional hydraulic lock and a drilling machine feeding oil cylinder. According to the hydraulic control system for percussive rotary drilling of the dinting machine, the percussive rotary drilling machine can perform stepless speed regulation between two speeds, high-frequency percussive or low-frequency percussive operation can be flexibly used according to rock stratum and geological working conditions, the application range of equipment is greatly widened, and the hydraulic control system can be used for rock stratums with high hardness, weathered rock stratums and hard and brittle geology. And during low-frequency impact operation, one-key linkage operation can be realized, namely, the functions of feeding, rotating and impacting of the drilling machine can be completed by operating the impact pilot handle.

The invention relates to the technical field of cable processing, in particular to wire and cable skin stripping and recycling equipment which comprises a traction frame, a fixing plate is fixed to the middle of the interior of the traction frame, a first hole groove is formed in the fixing plate, a stripping and recycling mechanism is installed in the first hole groove, and two second hole grooves are symmetrically formed in the two sides of the traction frame. Four fixing seats are fixed in the second hole groove at equal intervals, and first springs are fixed in the fixing seats; the stripping and recycling mechanism is used for cutting and recycling the cable skin, the cutting knife is used for cutting the cable skin, and meanwhile, lubricating oil is smeared on the surface of the cutting knife, so that overall smooth cutting is guaranteed, and the situation that the cutting knife is adhered to the cable skin due to overheating caused by excessive friction is avoided; and by means of the sliding connection effect between the movable block and the L-shaped sliding groove, the effects of stability during cutting and rapid replacement after cutting are achieved, and therefore the overall stripping and recycling efficiency is improved.

The utility model provides an anti-wear protective sleeve for a cable in a wind driven generator tower, which relates to the field of cable anti-wear and comprises a limiting outer sheath, a limiting inner ring block and a wind driven generator cable, and the inner side of the limiting outer sheath is slidably connected with the wind driven generator cable through the limiting inner ring block. The inner side face of the limiting outer sheath is attached to the outer arc face of the limiting inner ring block through an arc-shaped sliding groove, the groove face of the arc-shaped sliding groove is filled with a solid oil block, a sealing oil cover is pressed on the outer surface of the limiting outer sheath, the inner side face of the sealing oil cover is connected with an arc-shaped pressing plate through a supporting spring, and the solid oil block is tightly attached to the side face of the arc-shaped pressing plate. According to the utility model, the problem that the anti-wear service life is short due to the fact that the convex rotating beads of the protective sleeve are easy to damage after being impacted and collided in the prior art is solved.

The utility model discloses a stainless steel pipe inner wall polishing device, which belongs to the technical field of stainless steel pipe inner wall polishing devices, and adopts the technical scheme that the stainless steel pipe inner wall polishing device comprises a machining table, a sliding groove is formed in the top of the machining table, supporting plates are fixedly connected to the two sides of the machining table, and polishing assemblies are arranged at the tops of the supporting plates; the polishing assembly comprises a placing plate bolted to the top of the supporting plate, a clamping assembly is arranged on the front side of the machining table, and the problems that an existing stainless steel pipe inner wall polishing device cannot stably clamp a stainless steel pipe conveniently, so that the steel pipe shakes or displaces in the polishing process, the polishing precision and quality are affected, and the polishing efficiency is improved can be solved. And lubricating oil is not convenient to add in the process of polishing the long stainless steel pipe, so that the friction coefficient between the polishing head and the inner wall of the stainless steel pipe is increased, the inner wall of the stainless steel pipe is locally overheated to deform, and the size precision and the surface smoothness of subsequent machining are influenced.

The present disclosure provides a kind of injection valve, belongs to automatic lubrication system technical field.The injection valve includes valve body, valve core structure and injection structure, the inside of the valve body has communication channel, oil inlet channel, air inlet channel, oil injection channel and jet channel, the first end of the oil inlet channel, the first end of the air inlet channel, the first end of the oil injection channel, the first end of the jet channel are communicated with the communication channel, the second end of oil injection channel is used to spray out grease, the second end of the jet channel is used to spray out compressed air;Valve core structure is movably located in the communication channel, the above injection valve can be introduced into grease, while introducing compressed air into injection valve at the same time to spray out grease, to avoid the waste of compressed air.

The invention discloses an anti-jamming communicating pipe butterfly valve assembly for steam condenser cylinder cutting, which relates to the technical field of valves and comprises a valve body, a motor, a valve shaft, a valve plate, a bearing and an oil outlet assembly. The motor drives the valve shaft to rotate through the driving seat to drive the valve plate to adjust the opening and closing angle, and the valve plate is matched with the inner diameter of the valve body to optimize fluid control. Symmetrical bearings support the valve shaft to reduce friction; the oil outlet assembly converts rotation of the valve shaft into intermittent extrusion on the oil storage cavity through the linkage mechanism, lubricating oil is accurately injected into the bearing outer ring through the oil discharging channel, and automatic oil supplementing is achieved. The design solves the problem of period lag of traditional manual lubrication, ensures long-acting lubrication of the bearing, reduces abrasion and jamming risks, and is particularly suitable for harsh working conditions of high-temperature, high-pressure and high-frequency opening and closing. The valve is compact in structure, integrates fluid resistance optimization and intelligent lubrication functions, has the characteristics of high sealing performance and high temperature resistance, and effectively improves the operation reliability and prolongs the service life of the valve.

The utility model belongs to the field of curved block processing equipment, and particularly provides a parameter-controllable curved block bionic treading and rubbing device which comprises a power device used for driving a lifting assembly to lift up and down, the lifting assembly comprises a lifting platform, and the lifting platform is connected with a treading and rubbing support through a connecting rib plate. A plurality of treading and kneading lifting guide sleeves for guiding the treading and kneading connecting device are arranged on the treading and kneading support, a treading and kneading assembly is arranged on the lifting assembly, the treading and kneading assembly comprises an excitation power device for driving an eccentric shaft assembly, the eccentric shaft assembly comprises a power shaft, a plurality of eccentric bearings are arranged on the power shaft, and the upper end of an output sleeve rod is connected with the eccentric bearings; the treading and kneading connecting rod device comprises a loading connecting rod hinged to the supporting hinged support, the upper end of the tolerance connecting rod is hinged to the loading connecting rod, the lower end of the tolerance connecting rod is hinged to the treading and kneading connecting device, and the lower end of the treading and kneading connecting device is connected with the treading and kneading mold. The device simulates manual treading of the flexing block with feet for multiple times, improves the production efficiency and reduces the labor intensity.

A method of lubricating a fluid production pump may include mixing a polarized lubricant with water to produce a diluted lubricant. The method may additionally include creating a flowpath within the fluid production pump. An initial volume of the diluted lubricant may be circulated within the flowpath to allow the diluted lubricant to react with components of the fluid production pump and form a protective barrier on the components of the fluid production pump. The method may further comprise repeatedly introducing a periodic volume of diluted lubricant into the fluid production pump according to a predefined lubrication schedule.

The invention discloses an active bending section and an endoscope, and relates to the technical field related to endoscopes, the active bending section comprises a snake bone head section and a plurality of snake bone joints which are sequentially connected end to end, the snake bone head section is rotatably connected with the adjacent snake bone joints, one end of each snake bone joint is fixedly provided with a protruding ball head, and the other end of each snake bone joint is fixedly provided with a ball. One end of each snake-shaped joint is fixedly provided with a ball head, the other end of each snake-shaped joint is fixedly provided with a ball socket matched with the ball head for use, every two adjacent snake-shaped joints are rotationally connected through the ball heads and the ball sockets, each ball socket is internally provided with a self-lubricating unit used for lubricating the corresponding ball head and the corresponding ball socket, and each snake-shaped joint is fixedly provided with a fixing lug and is provided with a traction steel wire through the fixing lug; according to the self-lubricating ball head, self-lubricating operation between the ball head and the ball socket can be achieved when the ball head rotates, the rotating friction resistance between the ball head and the ball socket can be reduced, relative movement is smoother during bending, the abrasion degree can be reduced, chippings generated due to abrasion are reduced, and potential damage to human tissue is avoided.

The utility model discloses a multiphase flow intelligent control mixed transportation system which comprises a suction and extraction tank, a separation pressurization mixed transportation tank, an intelligent control cabinet, a pump body, a variable frequency motor, a transmission mechanism and at least one group of continuous suction and extraction units, an inlet and a plurality of outlets are formed in the surface of the pump body, and the suction and extraction tank is connected with the inlet of the pump body through a first pipeline; the separation pressurization mixed conveying tank is connected with a plurality of outlets of the pump body through a plurality of second pipelines, the intelligent control cabinet is electrically connected with the variable frequency motor, the continuous suction and extraction unit comprises two suction and extraction assemblies, and the variable frequency motor is connected with the continuous suction and extraction unit through a transmission mechanism; and when one of the suction and extraction assemblies discharges the medium into the separation and pressurization mixed transportation tank, the other suction and extraction assembly sucks and extracts the medium in the suction and extraction tank when the other suction and extraction assembly discharges the medium into the separation and pressurization mixed transportation tank. The device is simple and reliable in structure, can realize efficient and continuous conveying of gas, solid and liquid mixtures, and can be used for absorption and recovery as well as reinjection.

The invention discloses a strong-combination wide-temperature-range wear-resistant composite coating, and relates to the technical field of solid lubricating materials, the composite coating comprises a transition layer, a functional inner layer, a diffusion barrier layer and a functional outer layer which are sequentially formed on the surface of a matrix, the transition layer is a Mo layer and a Mo2N layer, the functional inner layer is a MoAgN layer, the diffusion barrier layer is a Mo2N layer, the functional outer layer is a MoAgN layer, and the functional inner layer is a MoAgN layer. The functional outer layer is a MoAgN layer, and the MoAgN layer comprises a Mo2N phase and an Ag phase. The invention further discloses a preparation method of the composite coating and application of the composite coating in the field of solid lubrication protection. The composite coating is good in film-substrate binding force and low in friction coefficient and wear rate in a wide temperature range, damage to key mechanical parts in the air foil bearing caused by high-temperature lubrication failure can be avoided, and the tribological performance of the bearing parts under the working condition of the wide temperature range is improved.

The invention relates to the field of cranes, in particular to a crane traveling wheel set with a track cleaning function, which comprises a track frame and a traveling wheel set arranged on the track frame, a retracting part is arranged at the front part of the upper end of the traveling wheel set, and the end part of the retracting part is connected with a lubricating oil tank; two brush bodies are symmetrically and obliquely installed at the lower end of the lubricating oil tank, the ends of the brush bodies are attached to the rail frame, a plurality of oil outlet holes are formed in the position, between the two brush bodies, of the lower end of the lubricating oil tank in a linear array penetrating mode, and a V-shaped shovel head is fixedly installed on the lower portion of the front end of the lubricating oil tank and attached to the rail frame. The labor intensity of workers is reduced, the working efficiency is improved, meanwhile, the phenomena that a V-shaped shovel head damages a lubricating oil layer and lubricating oil is continuously discharged to cause waste are avoided, and the phenomenon that the lubricating oil is polluted when the brush body is used for smearing is prevented.

The invention relates to the technical field of linear motors, in particular to a T-shaped mover linear motor with a self-lubricating function, which comprises a rack and a mover motor, a load platform is mounted at the top of the mover motor, and guide blocks which are symmetrically distributed are fixed on the inner wall of the load platform; guide grooves which are symmetrically distributed and matched with the guide blocks are formed in the side wall of the rack, oil storage cavities which are symmetrically distributed are formed in the load platform, oil outlet holes are formed in the guide blocks in a penetrating mode, one end of each oil outlet hole is communicated with the corresponding oil storage cavity, and an oil storage tank is arranged on one side of the rack and connected with an automatic oil supplementing mechanism. Wherein an oil supply mechanism is arranged in the oil storage cavity; according to the linear motor, in the reciprocating motion process of the rotor, the oil supply mechanism can continuously discharge the lubricant in the oil storage cavity from the oil outlet hole and uniformly smear the lubricant on the surface of the guide groove to achieve self-lubrication, the automatic oil supplementing mechanism automatically supplements the lubricant to the oil storage cavity, manual intervention is not needed in the whole process, and the stability and maintenance-free performance of equipment operation are remarkably improved.

The invention discloses an automatic assembling device and method for an O-shaped ring in an oil injector hole of an engine cylinder cover, and relates to the technical field of engine cylinder covers. The feeding mechanism comprises a feeding base, and a vibrating screen mechanism, a stop block mechanism and a jacking mechanism which are connected to the feeding base; the vibrating screen mechanism is used for sequentially conveying a plurality of O-shaped rings into the mounting positions of the stop block mechanism; a supporting claw connected with an O-shaped ring is arranged in an installation position of the check block mechanism, and an opening and closing baffle assembly is arranged at the top of the installation position. The jacking mechanism is provided with a jacking plate and a jacking device, and the jacking device can jack the jacking plate to enable the O-shaped ring on the supporting claw to be ejected out. The assembling mechanism comprises a conveying mechanism, an assembling base, a driving device and a grabbing and clamping mechanism; the assembling base is movably connected to the conveying mechanism; the driving device is connected to the assembling base; the driving device drives the grabbing and clamping mechanism to move so as to grab the O-shaped ring on the supporting claw, and the O-shaped ring is pressed into an oil spraying hole of the cylinder cover.

This invention relates to the field of cabin-penetrating sealing technology, specifically to a wire rope cabin-penetrating sealing device and method. The device includes a cabin-penetrating section, a transfer section, a fastening guide section, and multiple sealing sections. The fastening guide section is located at the front end of the cabin-penetrating section, and the transfer section is located at the rear end. A sealing section is provided at the fixed connection point between the transfer section and the cabin-penetrating section. The cabin-penetrating section is fixedly installed inside the cabin, and a sealing section is provided at the connection point between the cabin-penetrating section and the cabin. The sealing section includes a water-swellable sealing strip. The transfer section connects two cabin-penetrating sections installed in different cabins, achieving rapid installation, disassembly, and cabin-penetrating effect. The cabin-penetrating section and the transfer section are internally connected, with the wire rope passing through the middle. The fastening guide section is installed inside the cabin-penetrating section, and the size of the inner ring of the fastening guide section is adjusted to fix the outer wall of the wire rope. This invention solves the problems of current wire rope cabin-penetrating devices, such as simple structure, inability to provide buffering to neutralize axial sway of the wire rope, resulting in severe wear and short service life.

The invention discloses a double-acting shifting fork type pneumatic actuator, and relates to the technical field of actuators. Comprising a box body and a rotating shaft, the rotating shaft is provided with a shifting fork with a sliding groove, the buffering assembly comprises a hollow buffering ring located between the rotating shaft and the shifting fork, and the buffering ring is fixedly connected with the shifting fork and is slidably connected with a pushing ring through a plurality of guide rods. The lubricating assembly comprises lubricating boxes located on the two sides of the sliding groove and provided with a plurality of extrusion holes, and extrusion boxes communicated with the extrusion holes and an adjusting assembly are arranged in the lubricating boxes. The adjusting ring is connected with the buffering ring in a sliding mode and fixedly connected with the guide rod, the extrusion box communicates with the buffering ring through a guide pipe, and vibration and abrasion of a shifting fork groove and a sliding block are reduced through impact force of multi-stage buffering fluid and lubrication.

The utility model belongs to the technical field of front drive axles, and particularly relates to a light-weight tractor front drive axle which comprises a front axle body, a reinforcing plate is fixedly connected to the outer wall of the front axle body, a driving shaft penetrates through the outer wall of the front axle body, and a first bevel gear is fixedly connected to one end of the driving shaft. A rubber backing ring and a cover plate are arranged to drive a sealing ring on the outer wall of a connecting block to be attached to the inner wall of an oil injection opening, sealing operation on the oil injection opening is achieved, then a rotary knob rotates to drive a threaded column to slide along the connecting block through a bolt, and therefore the oil injection opening is sealed. The threaded column slides to drive the pressing ring at the top end of the pressing plate to move synchronously, then the pressing ring moves to press the rubber backing ring, the rubber backing ring deforms, the outer wall of the rubber backing ring is attached to the inner wall of the oil injection port, the sealing performance of the oil injection port is improved, and the situation that muddy water permeates into the front axle body through the oil injection port, and consequently workpieces in the front axle body are abraded is avoided.

The invention discloses a waste metal material crushing and recycling device, and relates to the technical field of waste metal material processing. A waste metal material crushing and recycling device comprises a shell, a feeding port is formed in the top of the shell, a crushing part used for crushing metal is arranged in the shell, a driving part used for driving the crushing part to operate is installed on the shell, grates are arranged on the inner wall of the bottom of the shell, and a feeding port is formed in the top of the shell. A discharge hole is formed in the bottom of the shell and is positioned on the grate; through the combination of intermittent high-speed cooling airflow dynamic regulation and control and an intelligent lubrication compensation mechanism, a local airflow protection layer is formed in the running process of a crushing part, chippings are effectively prevented from invading a friction interface, the heat shielding effect is broken through turbulence disturbance, meanwhile, the continuous running time of equipment is prolonged in a self-lubricating compensation mode on a wear area, and the service life of the equipment is prolonged. And the problems of abnormal wear, high energy consumption and frequent maintenance of the hammer shaft of the traditional crusher are solved.

The invention discloses a large movable earthquake alarm device for an open area, and relates to the technical field of earthquake alarms, the large movable earthquake alarm device comprises a fixed base, a height adjusting mechanism is installed on the top surface of the fixed base, the inner side of the top end of the height adjusting mechanism is connected with a rotating sphere, and the bottom of the rotating sphere is fixedly connected with a vertical wire. And a counterweight cone is fixedly mounted at the bottom end of the vertical wire. Vibration generated by an earthquake drives the device to vibrate synchronously, the rotating sphere, the vertical wire and the balance weight cone are in a vertical state all the time, then electric energy is transmitted to trigger alarm work through connection of the vertical wire and the conduction alarm mechanism, and the sensitivity of earthquake alarm is effectively improved; and the height of the counterweight cone can be adjusted through the arrangement of the height adjusting mechanism, so that the contact height between the conduction alarm mechanism and the vertical wire is controlled, and the sensitivity of the earthquake alarm is conveniently adjusted.