5851results about "Engine lubrication" patented technology

The invention relates to the technical field of metal sliding bearings, and provides a liquid metal sliding bearing with high sealing performance, which comprises a mandrel, a graphite sealing assembly, a flange and a shaft sleeve, and further comprises a ternary gallium-based liquid metal and a silicon carbide ceramic coating, wave-shaped check rings are arranged among the multiple graphite rings at intervals, initial contact loads are provided through the wave-shaped check rings, the graphite rings and the flange are tightly attached, static sealing with excellent performance is formed in the static state, and the fit clearance between the mandrel and the shaft sleeve is filled with ternary gallium-based liquid metal. A silicon carbide ceramic coating is plated at the matching position of the mandrel and the flange, and a silicon carbide ceramic coating is also plated at the matching position of the mandrel and the shaft sleeve. By using the graphite ring, the ternary gallium-based liquid metal and the silicon carbide ceramic coating, the liquid metal has good fluidity, so that the interface can be fully filled, the liquid metal is not easy to volatilize, the lubricating effect is better, the friction factor is low, and the wear resistance is better.

The invention discloses a self-lubricating gasket capable of intelligently monitoring wear, the gasket comprises a substrate, a wear-resistant layer and a monitoring part, one side of the substrate is adhered to the inner side of a bearing outer ring, and the wear-resistant layer is arranged on the other side of the substrate; the multiple monitoring parts are arranged around the base in the circumferential direction and comprise conductive wear pieces and resistance sensors, the conductive wear pieces are embedded in the surface of the side, close to the wear-resistant layer, of the base, the resistance sensors are arranged in the base, and the conductive wear pieces are connected with the resistance sensors through positive and negative wires; and the substrate, the wear-resistant layer and the conductive wear sheet are all self-lubricating gaskets. When the self-lubricating gasket is used for a self-lubricating bearing, on the premise that the antifriction and abrasion resistance of the self-lubricating gasket is not affected, the resistance value change of the gasket on the bearing can be monitored, the abrasion loss of the gasket is monitored through the resistance value change, shutdown or equipment disassembly is not needed, the detection efficiency is improved, and the labor cost is reduced; errors caused by manual measurement are avoided, and the intelligent monitoring effect is achieved.

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 discloses a method for preparing lubricating oil microspheres based on a microfluidic technology. The method comprises the following steps: preparing an external phase solution, an intermediate phase solution, an internal phase solution and a collection solution; firstly, the internal phase solution is introduced into the micro-fluidic chip, and after the flow of the internal phase solution is stable, the intermediate phase solution is introduced into the micro-fluidic chip to be sheared with the internal phase solution to form nuclear layer liquid drops. After the core layer liquid drops are generated stably, the external phase solution is introduced into the micro-fluidic chip to be sheared with the core layer liquid drops, so that the external phase solution wraps the outer layer of the core layer to form a shell layer with a core-shell structure, and then the double liquid drops are dropped into a collecting solution containing glutaraldehyde to be crosslinked and cured to form the chitosan lubricating oil microspheres. The chitosan lubricating oil microsphere has the following beneficial effects that the lubricating oil is wrapped in the microsphere through a microfluidic technology, so that the chitosan lubricating oil microsphere is of a core-shell structure, and when the lubricating oil is needed, the lubricating oil in the microsphere is released to improve the friction performance of parts.

The invention relates to the technical field of electric energy meters, and discloses an electric energy meter convenient to disassemble and assemble, which comprises a mounting slide rail, the mounting slide rail is used for mounting an electric meter, the mounting slide rail is slidably connected with a sliding shell, one side of the sliding shell is fixedly connected with a pair of supporting round shells, and a lubricating oil bin is rotatably connected between the two supporting round shells. An oil outlet hole is formed in one side of the lubricating oil bin, a first sliding groove is formed in the lubricating oil bin, the first sliding groove is located in one side of the oil outlet hole, a sealing block is slidably connected into the first sliding groove, the sealing block is clamped in the first sliding groove, a round hole is formed in the sealing block, and an oil outlet pipe is fixedly connected to one side of the sealing block. According to the electric energy meter convenient to disassemble and assemble, before the electric energy meter is installed on the sliding rail, the two sides of the installation sliding rail are coated with lubricating oil, so that the installation sliding rail can be lubricated, and the electric energy meter can stably slide on the installation sliding rail.

The invention discloses a plug plugging and unplugging test device, and relates to the technical field of plug plugging and unplugging test.The plug plugging and unplugging test device comprises an operation table with an operation panel, a driving box, a fixing block and an auxiliary assembly, a mounting frame is fixedly arranged on the operation table, a first clamping plate and a second clamping plate are arranged on the two sides of the mounting frame respectively, and the driving box is fixedly arranged in the mounting frame; a supporting seat is fixedly arranged on the side, away from the driving box, of the interior of the mounting frame, a supporting plate is fixedly arranged at the bottom of the supporting seat, a second clamping assembly is arranged in the supporting seat, the fixing blocks are symmetrically arranged in the mounting frame, and symmetrically-distributed positioning rods are fixedly arranged on the outer side of the mounting seat. The fixing blocks are symmetrically arranged on the upper side and the lower side of the positioning rod, the first clamping plate for clamping a plug and the second clamping plate for clamping a socket are fixed at the same time through the mounting frame, then the positioning rod slides between the fixing blocks to accurately move the plug into the plug, and the situation that the plug is plugged in and out in a staggered mode due to vibration when the plug is plugged in and pulled out is prevented.

The utility model discloses a cable stranding device, which relates to the technical field of cable processing, and comprises a bottom frame, the top of the bottom frame is fixedly connected with a first fixing plate, the interior of the first fixing plate is fixedly connected with an oil brushing disc, the interior of the oil brushing disc is provided with a plurality of mounting holes, the interior of the oil brushing disc is provided with an oil brushing assembly, and the oil brushing assembly is fixedly connected with the bottom of the bottom frame. A first fixing plate is fixedly connected to the top of the bottom frame, a second fixing plate is fixedly connected to the top of the bottom frame, a twisting assembly is arranged in the second fixing plate, a supporting rod is fixedly connected to the top of the bottom frame, a collecting ring is fixedly connected to the top of the supporting rod, a fixing frame is fixedly connected to the top of the first fixing plate, and an oil storage tank is fixedly connected to the interior of the fixing frame. According to the utility model, the lubricating oil can be uniformly coated on the surface of the cable through the oil brushing assembly, so that the friction between the cable and the through hole and the collecting ring can be reduced, the cable is prevented from being damaged, and the abrasion of the through hole and the collecting ring is also reduced.

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.

A lubrication system for a chainsaw, the lubrication system including a reservoir housing a lubricant, a fluid conduit extending between the reservoir and a location adjacent to a chain of the chainsaw, a pump configured to move lubricant from the reservoir to the location adjacent to the chain, and a valve disposed along the fluid conduit. The valve has a lubricant inlet that receives lubricant from the reservoir, an air inlet, and an outlet that provides lubricant to the location adjacent to the chain. The valve is movable between an open position whereby lubricant passes from the lubricant inlet to the outlet and a closed position whereby the outlet is in fluid communication with the air inlet. The valve moves between the open and closed positions in response to a user input.

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 the technical field of grinding structures, in particular to a ball head pipe end grinding structure which comprises a supporting structure used for supporting a ball head body, a fixing mechanism for fixing the ball head body is installed above the supporting structure, and a grinding structure and a lubricating mechanism for machining the ball head body are installed on the fixing mechanism. The supporting structure comprises a base, a supporting rod welded to the upper surface of the base and a supporting cylinder detachably installed on the outer surface of the supporting rod. The fixing mechanism comprises a mounting cylinder fixedly mounted at the top end of the supporting rod; a transmission structure connected with the pump body is mounted on the mounting frame; an annular guide groove is formed in the outer surface of the top end of the supporting cylinder. The grinding device has the advantages of efficient grinding, intelligent lubrication, accurate control, high adaptability and simplicity and convenience in operation, the grinding effect of the ball head body can be remarkably improved, the service life of a tool can be remarkably prolonged, the labor intensity of operators is reduced, and the production efficiency is improved.

The invention discloses a vortex air inner-cooling and inner-lubricating grinding wheel which comprises a hot shaft assembly, a rotating seat assembly, a rotating main shaft, a fan-shaped spray head, a grinding wheel mounting disc assembly and a grinding wheel disc. A hot shaft in the hot shaft assembly, the fan-shaped spray head and a grinding wheel installation disc in the grinding wheel installation disc assembly are sequentially connected with a rotating main shaft through threads, and the grinding wheel disc and the grinding wheel installation disc are fastened through bolts. During machining, compressed air is introduced into one side of the grinding wheel, high-speed airflow generates vortexes through an internal vortex pipeline structure, cold airflow and hot airflow are separated out, and the cold airflow is separated towards the grinding wheel disc side. And meanwhile, lubricating liquid is introduced into the other side of the grinding wheel, cold air and the lubricating liquid converge and enter a grinding wheel disc cavity through a fan-shaped spray head, and then flow out through a grinding wheel hole to cool and lubricate a grinding area. The grinding force and the grinding heat during grinding are effectively reduced, the production cost is reduced, the grinding quality is improved, and green machining is achieved.

A device for lubricating a surface of a tubular element includes a shaft portion having a longitudinal axis, where the shaft portion is formed from plastic, and a brush portion located on the shaft portion. The brush portion has at least one contact zone for contacting a surface. The brush portion is formed from a brush portion material and a lubricant agent, which is transferred from the at least one contact zone to a surface during use.

An apparatus for lubricating a surface of a tubular element for a medicament delivery device includes a rotatable drum comprising a tubular element receiving section configured to receive a tubular element to be lubricated. The drum is rotatable about its central axis. The apparatus comprises a device manipulator comprising a device handler at one end of a rod. The device handler is configured to receive a shaft portion of a device, and the rod moves a device through a received tubular element. The device manipulator is rotatable about the central axis of the rotatable drum.

The invention relates to the technical field of accurate transmission control, in particular to a transmission device and a gallium nitride production system. In the transmission device, a transmission shaft is used for enabling a power output shaft of the driver to be in transmission connection with the main shaft body. And the transmission sleeve is in transmission fit with the transmission shaft and sleeves the transmission column. The first barrel and the second barrel are coaxially and fixedly connected, the inner spaces of the first barrel and the second barrel are communicated, and the first barrel is located at the end, close to the transmission column, of the second barrel. The first barrel is provided with internal threads. The rotating part is provided with an external thread, the rotating part is rotatably matched in the first barrel, and the rotating part and the first barrel are movably sealed. The rotating piece is connected with the transmission column. And the piston is in sliding fit in the second barrel. The pressure sensor is arranged on the inner side of the sealing plate, and a first elastic piece is connected between the pressure sensor and the piston in an abutting mode. The transmission precision can be calibrated as required according to the actual transmission situation, and the device can adapt to the situation that short-distance transmission and long-distance transmission are mixed.

A device for lubricating a surface of a tubular element includes a shaft portion having a longitudinal axis, and a brush portion located on the shaft portion. The brush portion comprises at least one radial projection having a helical form. The protrusion comprises at least one contact zone for contacting a surface. An outer diameter of the helical form formed by the at least one contact zone is tapered at both longitudinal ends of the brush portion such that the outer diameter of the helical form is reduced at the longitudinal ends of the brush portion. The brush portion is formed from a brush portion material and a lubricant agent which is transferred from the at least one contact zone to a surface during use.

The invention discloses an electric drive lubricating and cooling system and a vehicle. The electrically-driven lubricating and cooling system comprises a shell assembly, a controller, a motor, a speed reducer, an oil pump and an oil cooler, the shell assembly is provided with a motor installation cavity, a controller installation cavity, a water cooling cavity, a speed reducer installation cavity and an oil storage cavity, the speed reducer installation cavity and the oil storage cavity are communicated, and a plurality of oil channels and a plurality of water channels are arranged in the box wall of the shell assembly. The oil pump, the oil cooler, the stator mounting cavity and the speed reducer mounting cavity are sequentially communicated through oil ducts to form an electric drive lubricating and cooling loop; the oil cooler communicates with the water cooling cavity through a water channel. And the stator core and the stator winding are immersed in the circulating oil liquid for heat dissipation, so that the cooling efficiency is high. Lubricating oil and cooling liquid for cooling the controller circulate in the box wall of the shell assembly, an oil pipe and a water pipe do not need to be additionally arranged in the whole electrically-driven lubricating and cooling system, and the structure of the electrically-driven lubricating and cooling system is more compact.

The invention discloses a bearing vibration detector pressing device and method, and relates to the technical field of bearing detection.The bearing vibration detector pressing device comprises a machining table, a lifting table is fixedly installed at the top of the machining table, and a first motor is fixedly installed on the surface of the machining table; a second motor is fixedly installed at the top of the machining table, and the clamping device comprises a sliding plate, a first telescopic elastic rod, a clamping jaw, a gear, a base, a tooth block, a lantern ring, a rotating shaft, a fixing rod, a first connecting block, a first connecting rod, a linkage rod, a second connecting rod and a second connecting block. It is ensured that the bearing is kept stable in the detection process, interference of vibration signals is reduced, and looseness during vibration detection is effectively prevented.

A method of lubricating a surface of a tubular element for a medicament delivery device includes the steps of moving a device relative to the tubular element for a medicament delivery device, contacting the tubular element with a brush portion of the device, and depositing lubricant agent on the surface of the tubular element to lubricate a surface of the tubular element.

The invention discloses a fan-shaped air cylinder, and relates to the technical field of air cylinders, the fan-shaped air cylinder comprises two fan-shaped air cylinder shells, an integrated blade is arranged between the two fan-shaped air cylinder shells, and rotating shafts are arranged at the two ends of the integrated blade. The fan-shaped air cylinder adopts a two-way lip-shaped sealing structure and is provided with a spring steel sheet and a pressing plate, the structure is firm and durable, compressed air enters an air groove to enable the lip-shaped seals to expand all around to achieve zero leakage, a lubricating oil groove is formed between the lip-shaped seals on the two sides, lubricating oil rotates along with a piston, the lubricating effect is good, friction force is reduced, and the service life is prolonged. The service life of the sealing ring is prolonged, the torque is large, the rotating shaft does not need to use the sealing ring, leakage is avoided, the conical roller bearing is arranged on the fan-shaped air cylinder shell, the conical roller bearing can bear axial force and radial force at the same time, the blade rotating shaft can be effectively positioned, and the service life of the blade rotating shaft is prolonged. And abrasion of the lower edge sealing ring and scratching of the cylinder wall caused by sinking generated by the dead weight of the blades are prevented.

The invention relates to the technical field of disassembling tools for insulating water pipes in cylinder sleeves on low-speed diesel engines, and discloses a tool for pulling out an insulating pipe of a marine low-speed engine cylinder sleeve, which comprises an assembly block, trapezoidal pull rods, an opening rod, an assembly arm, a screw rod, a screw sleeve, an impact block and a limiting block, the trapezoidal pull rod is connected with the interior of the assembly block through a first spring, the opening rod and the impact block are in threaded connection with each other, the limiting block is inserted into the left side of the impact block, the assembly block comprises a threaded cylinder, the bottom of the threaded cylinder is in threaded connection with a bottom cover, and a limiting column is assembled at the top of the bottom cover and connected with the first spring. According to the tool for pulling out the insulating pipe of the cylinder sleeve of the marine low-speed machine, the elastic pin can be conveniently disassembled, and the situation that a rust remover is directly sprayed into a pipeline, consequently, the rust remover cannot be completely sprayed to the outer portion of the elastic pin, and the rust remover is wasted is avoided.

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 invention discloses a monitoring camera convenient to disassemble, and relates to the technical field of monitoring equipment.The monitoring camera convenient to disassemble comprises an installation frame and further comprises a disassembling device.An installation rod is fixedly installed at the bottom of the interior of the installation frame, an installation groove is formed in the surface of the installation frame, and an installation plate is slidably installed on the circumferential surface of the installation rod; a dismounting plate is arranged on the circumferential surface of the mounting rod, a supporting rod is fixedly mounted on the surface of the dismounting plate, a camera body is fixedly mounted at the top of the supporting rod, the mounting plate moves upwards to extrude the dismounting plate to move upwards, the dismounting plate moves upwards to drive the supporting rod to move upwards, and the supporting rod moves upwards to pop out the camera body. The mistaken touch prevention design can ensure continuous and stable operation of the monitoring system, monitoring interruption caused by mistaken touch disassembly of equipment is avoided, continuity and stability of the monitoring system can be kept, the monitoring camera is convenient to disassemble, and maintenance and replacement of the camera can be more convenient.

The invention discloses an intelligent pressure regulating and metering pry, and belongs to the technical field of pressure regulating and metering pry. Comprising a base; the skid-mounted component and the valve bodies are arranged on the base, the valve bodies are fixedly connected and communicated with the skid-mounted component, the valve bodies are in sealed sliding connection with valve rods, and the valve rods are in sealed sliding and rotating connection with sealing blocks; the sealing blocks are fixedly connected with first connecting pieces, the multiple sliding frames slide on the first connecting pieces of the adjacent sealing blocks respectively, the sealing blocks are fixedly connected with first sealing rings, and the multiple sliding frames located on the first connecting pieces of the same sealing blocks are jointly and fixedly connected with rubber rings. Solid particles located at the attaching position of the first sealing ring and the valve body are pushed to the outside in advance, then the first sealing ring and the valve body are attached to complete plugging, and the situation that the first sealing ring cannot be completely attached to the valve body due to the solid particles, and the sealing effect is reduced is avoided.

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 utility model discloses an energy-saving and emission-reducing container portal crane, and belongs to the technical field of container portal cranes. Comprising a chassis; a main beam is fixedly mounted at the top of the underframe; the travelling crane is clamped between the inner walls of the tops of the main beams in a sliding manner; the guide rails are fixedly mounted on the top surfaces of the two sides of the main beam; fixing plate motors are fixedly mounted at the four corners of the top of the traveling crane, and a motor is fixedly mounted on one side of the fixing plate; an output shaft of the motor is fixedly connected with the roller, and the roller is in rolling fit with the guide rail; the maintenance mechanism is installed on the fixing plate and connected with the guide rail and the rolling wheels, the traveling crane moves in a guiding mode through the rolling wheels and the guide rail, the maintenance mechanism synchronously cleans the guide rail and the rolling wheels during moving, dust accumulation is avoided, oil films are smeared on the guide rail and the rolling wheels after cleaning, and the aging condition of the guide rail and the rolling wheels in the weather is reduced; the service life is prolonged, the walking resistance is reduced, the energy consumption is reduced, and the low-carbon purpose is achieved.

The invention relates to the technical field of crane equipment, and provides a movable portal crane which comprises a portal support frame and a track, rails are laid and installed on the two sides of the bottom end of the gate-type supporting frame, braking mechanisms are arranged at the two ends of the bottom of the gate-type supporting frame, rolling wheels are movably installed at the bottom end of the gate-type supporting frame, and an electric hoist is movably installed at the top of the gate-type supporting frame. By arranging the lubricating mechanism, when a steel wire rope lifts a heavy object, through cooperation between a second gear and a forward and reverse rack, a fourth gear rotates forwards, the second rack is driven to move towards the middle at the same time, extrusion plates are made to get close, a piston is pushed to move towards one side through extrusion of a connecting rod, and lubricating oil is sprayed out from an oil outlet; when the steel wire rope moves upwards, the steel wire rope is fully contacted with the surface of the steel wire rope, so that lubrication is uniform, friction between the steel wire rope of the portal crane and parts such as a pulley and a winding drum is reduced, and the service life of the steel wire rope is prolonged.

The utility model discloses a tension-compression-resistant long-service-life ball pin assembly for a heavy truck swing arm, and relates to the technical field of ball pin assemblies. The ball pin comprises a ball pin seat, a connecting plate is mounted at the top of the ball pin seat, a ball pin body is arranged in the ball pin seat, a dust cover is mounted at the top of the connecting plate, lubricating oil channels are symmetrically and obliquely formed in the ball pin seat, and connecting assemblies are symmetrically mounted on one side of the ball pin seat. According to the split type ball pin assembly, the ball pin base, the connecting plate, the ball pin body and the connecting assembly are arranged, the ball pin base and the connecting plate are connected and fixed through the connecting assembly, so that the ball pin base is in split type connection, and at the moment, the ball pin body is taken out and inserted into the ball pin base to complete assembly connection; the connection between the ball pin seat and the connecting plate can be quickly released by operating the connecting assembly, and then the ball pin body is taken out for replacement, so that the maintenance cost and potential safety hazards are greatly reduced.