93 results about "Tee junction" patented technology

The application discloses an engine connecting rod small head elliptical horn hole detection device and method, which comprises a supporting plate and a detection assembly; the detection assembly comprises a small hole detection head, the bottom of the small hole detection head is installed at the upper end of a first lifting assembly; a profile gauge needle in an L shape with a profile gauge is installed in the inner cavity of the small hole detection head, one end of the profile gauge needle is installed at the upper end of the first lifting assembly, and the other end penetrates through the small hole detection head and elastically abuts against the inner wall of the elliptical horn hole of the connecting rod to be detected; four air channels are arranged in the small hole detection head, one end of the air channels extends to the bottom of the small hole detection head; one end of the two air channels opposite in the radial direction is connected with the air outlet pipe of the gas-electricity meter through a tee joint, and the other end extends to the side surface of the small hole detection head respectively. The application has the advantages that the long and short axis sizes of the elliptical hole and the accurate measurement of the horn hole profile line can be simultaneously detected through one-time clamping, and the detection precision and the detection efficiency are greatly improved.

The utility model relates to a wellhead gas production device, and belongs to the field of gas production. Comprising a gas production tree and a tee joint, an oil pipe connector flange of the gas production tree is provided with an oil pipe pipeline, the end, away from the oil pipe connector flange, of the oil pipe pipeline is connected with the tee joint, a sleeve connector flange of the gas production tree is provided with a sleeve pipeline, and the end, away from the gas production tree, of the sleeve pipeline is communicated with the oil pipe pipeline through the tee joint. A conveying pipe is arranged on the tee joint, a ground wellhead sledge is arranged at the end, away from the tee joint, of the conveying pipe, and the tee joint and the conveying pipe make contact with the ground. The oil pipe pipeline and the casing pipeline are communicated, so that the device can adapt to different production stages, repeated construction is not needed, management is simple, and cost is saved; the tee joint, the conveying pipe and the ground wellhead skid are all in contact with the ground, climbing operation can be omitted, safety risks are effectively eliminated, and the ground wellhead skid is skid-mounted, so that site construction time can be greatly shortened.

The three-way connector double-head punching device comprises a machine frame, a blanking through groove is formed in the middle of the front portion of a top plate of the machine frame, side transverse beams extending front and back are fixed to the left portion and the right portion of the top face of the top plate of the machine frame, and horizontal guide plates extending front and back are fixed to the top faces of the side transverse beams. Vertical extending parts are formed on the top faces of the opposite wall faces of the two horizontal guide plates, the bottom face of a to-be-machined three-way connector is pressed against the top face of the top plate of the rack, and the left side wall and the right side wall of a main body of the to-be-machined three-way connector are tightly attached to or close to the inner side walls of the two vertical extending parts. The three-way connector can be inserted between the two vertical extending parts to be installed, automatic punching can be achieved, punching can be conducted on two connecting blocks of the three-way connector at a time, machining can be completed at a time, automatic discharging is achieved, the machining efficiency is high, assembling and disassembling are convenient, and the manual labor amount is greatly reduced.

The drainage pipeline structure comprises a drainage blind ditch, a communication part and a drainage part, the drainage blind ditch is arranged between a rock mass surface and a vertical shaft lining, and the drainage blind ditch is used for collecting leakage water of a rock mass; the communicating part comprises a three-way connecting piece, a pre-buried drainage pipe and a filling material, the pre-buried drainage pipe extends in the thickness direction of the vertical shaft lining and penetrates through the vertical shaft lining, the three-way connecting piece communicates with the drainage blind ditch and the pre-buried drainage pipe, and the filling material is arranged on the side, away from the three-way connecting piece, of the pre-buried drainage pipe and detachably connected with the pre-buried drainage pipe; the end parts of the embedded drainage pipe and the filling material do not exceed the inner wall surface of the vertical shaft lining; and the drainage part is configured to be connected with the pre-embedded drainage pipe after the filling material is detached, and the drainage part is used for draining leakage water. The drainage pipeline structure for the slip form construction does not affect normal construction of the slip form, and can ensure safe drainage of mountain leakage water after the slip form construction is completed.

This utility model discloses a three-way connection mechanism for mosquito net frames, including a first pipe, a second pipe, a third pipe, and a three-way connection body. The three-way connection body includes an integrally formed first connector, a second connector, and a third connector. The first pipe is inserted into the first connector, and the second pipe is inserted into the second connector. The third connector includes a insertion part and a movable part. The third pipe can switch between an unfolded state connected to the insertion part and a folded state hinged to the movable part by axial movement. This three-way connection mechanism for mosquito net frames has the advantages of simple and compact structure, convenient folding and unfolding operation, high flexibility of use, and easy storage.

The utility model discloses a movable conveying mechanism, and relates to the technical field of material transfer, and the movable conveying mechanism comprises a connecting movable plate used for lifting or lifting and translational motion; the air supply guide pipe is connected to the connecting moving plate in an inserted mode in the vertical direction and used for adsorbing materials; the three-way connecting piece is used for being connected with external equipment and providing vacuum degree for the air supply guide pipe; the bottom of the air supply guide pipe is provided with a suction head used for making contact with materials and being fixed in an adsorption mode, the three-way connecting piece is connected with the air supply guide pipe, and the upper end of the air supply guide pipe is provided with a discharging unit used for discharging in a matched mode. The discharging unit is matched for discharging, so that the materials are prevented from being adhered to the suction head, and the effects of efficiently discharging the materials and improving the loading matching degree are achieved.

The utility model discloses a three-way conversion joint with a filter device, which relates to the technical field of three-way conversion joints and comprises a three-way conversion joint body, the upper end, the lower end and the left end of the three-way conversion joint body are respectively provided with a threaded joint, and a first limit ring and a filter element are arranged in the three-way conversion joint body. A fixing cylinder is arranged at the right end of the three-way adapter body, a fixing ring is arranged on the outer surface of the fixing cylinder, a second limiting ring is arranged on the outer surface of the fixing ring, a plurality of first threaded fixing blocks are annularly and uniformly arranged on the right side of the fixing ring, and a first sealing groove is formed in the right end of the fixing cylinder; a sealing ring is arranged in the first sealing groove, and a mounting circular plate is arranged on the right side of the fixing cylinder. According to the three-way adapter with the filtering device, it can be guaranteed that the filter element stably filters water flow, meanwhile, the situation of water leakage can be avoided under the action of the sealing ring, and operation is convenient and fast when the filter element is disassembled, assembled and replaced.

The utility model relates to the technical field of liquid taking, in particular to a liquid quantitative moving and taking device which comprises a liquid storage bottle, a T-shaped tee joint and a piston quantitative container, the liquid storage bottle is sequentially connected with a teflon bent connector control valve, the T-shaped tee joint, a backflow bottle and a reaction ball through a hose, and the T-shaped tee joint is connected with the piston quantitative container. The liquid metering device has the advantages that when flowing along the hose, liquid can gradually enter the piston quantitative containers, after the first piston quantitative container is filled with the liquid, the liquid can sequentially flow into all the other piston quantitative containers which are arranged side by side, after all the graduators are filled with the liquid, the bent control valve is closed, and the liquid can flow into the second piston quantitative container. And the solution in the hose flows into the reflux bottle, so that the condition of non-uniform moving and taking can be ensured not to be generated when the piston quantitative container is used for repeated experiments, and errors are reduced.

The utility model discloses sub-packaging equipment for baby bath oil production, which belongs to the technical field of sub-packaging and comprises a transportation table, protective guards are symmetrically arranged on the transportation table front and back, a sub-packaging bottle is placed at the upper end of the transportation table, and sub-packaging equipment is arranged above the sub-packaging bottle; the subpackaging equipment comprises a filling table, a box body is arranged at the upper end of the filling table, and baby bath oil is contained in the box body; the box body is connected with a split charging pipe, the split charging pipe is connected with a filling pipe through a plurality of tee joints, the other ports of the tee joints are connected with a vacuumizing pipe, and the vacuumizing pipe is connected with a hydraulic cylinder; an arc-shaped valve is slidably arranged in a cavity formed in the tee joint, an electrothermal film structure is arranged on the outer side wall of the filling pipe, and the outlet end of the filling pipe is located above the subpackaging bottle. According to the utility model, the electrothermal film is used for generating heat after being electrified, and the heat is transferred to the filling pipe to heat the high-viscosity bath oil so as to reduce the viscosity, so that the high efficiency of the sub-packaging process and the stability of the product quality are ensured.

The utility model discloses a wire harness convenient to adjust the plugging direction, which comprises a main wire harness sheath and a plurality of sub wire harnesses, a sub wire harness sheath is arranged outside each sub wire harness, the end part of each sub wire harness is provided with a wiring terminal, and a main wire harness sheath is arranged outside all the sub wire harnesses; the bus harness sheath is disconnected from the branch external connection part and is connected through a buckle type tee joint; after the buckle type tee joint is buckled, the disconnected main wire harness sheath is connected by the main channel, and the branch external sub wire harness is externally connected to the outside of the main wire harness sheath by the branch channel; the sub-wire harness sheath is provided with a fracture, and a bending sheath is arranged outside the fracture. According to the utility model, the branch external connection part of the main wire harness sheath is divided into two parts which are connected through the buckle-type tee joint, and when the plugging direction is adjusted, the buckle-type tee joint is rotated to drive the sub-wire harnesses to rotate circumferentially, and the length of the sub-wire harnesses does not need to be prolonged; and the bending sheath can meet the requirements of protecting the sub-wire harness and bending at a large angle, so that the length of the sub-wire harness does not need to be increased.

A tower crane attached embedded sleeve connecting structure comprises a concrete body, an embedded part and a lug seat, the embedded part comprises a positioning steel plate, a sleeve, a connecting rod and a three-way connector, the sleeve is arranged at one end of the positioning steel plate, and the sleeve is fixedly connected with the positioning steel plate; a connecting hole is formed in the positioning steel plate and is communicated with the sleeve; a connecting rod is arranged at the lower end of the sleeve, one end of the connecting rod is connected with the sleeve in a matched mode, a three-way connector is arranged at the other end of the connecting rod, and the connecting rod is arranged on the three-way connector and fixedly connected with the three-way connector. The positioning steel plate is arranged on the end face of the concrete body and is flush with the end face of the concrete body, and the sleeve, the connecting rod and the three-way connector are all pre-buried in the concrete body. The utility model aims to meet the requirements that the construction is more efficient and quicker in a narrow space complex environment, and on-site welding is not needed.

The utility model discloses a mechanical seal pressure testing device for a kettle in a polycarbosilane production line, which is mounted at a mechanical seal of a stirring kettle and structurally comprises a shaft sleeve nut connected with the mechanical seal of the stirring kettle through an O-shaped ring, and a connecting seat is arranged above the shaft sleeve nut. A three-way connecting pipe inserted into the connecting seat is arranged on the connecting seat, a pressure gauge is arranged at a top port of the three-way connecting pipe, a pressure release valve and an air inlet valve are respectively arranged on one side of a side port of the three-way connecting pipe, and the other end of the air inlet valve is connected with an air source pipe. After the technical scheme is adopted, the kettle mechanical seal pressure test device for the polycarbosilane production line forms static pressure test under the matching of the O-shaped ring, the shaft sleeve nut, the connecting seat, the pressure gauge, the pressure release valve, the air inlet valve and the air source pipe, so that leakage or faults can be found in time, the problem that a defective mechanical seal is used on line is avoided, and the production efficiency is improved. The sealing liquid is prevented from leaking into the stirring kettle due to failure of the mechanical seal, so that the product quality is prevented from being influenced.

The application discloses a kind of transformer oil conservator intelligent oil pressure test device, including test cabinet, the upper part of the pressure charging device is connected with pressure reducing valve assembly, one side of the pressure reducing valve assembly is connected with electromagnetic valve, one side of the electromagnetic valve is provided with transition tank, one side of the transition tank is connected with inflation pipeline, the inflation pipeline is connected with breathing pipe, exhaust pipe by tee, the middle part of the breathing pipe, exhaust pipe is respectively provided with tee valve one, tee valve two, the upper part of the transition tank is provided with pressure sensor, pressure relief valve, the module box is connected with electromagnetic valve.The application is connected with tee valve one and tee valve two by setting, to control the communication and disconnection of breathing pipe, exhaust pipe, carry out inflation and deflation adjustment pressure in oil conservator, set sensor to monitor, control pressure in transition tank, and carry out control to electromagnetic valve by module box, realize the undismounted verification of compensating element in oil conservator, reduce workload, simultaneously realize convenient to carry out a variety of different tests.

The invention discloses a precise sheet metal laser machining device, and belongs to the technical field of sheet metal machining.The laser machining device comprises a workbench internally provided with a cavity, a cantilever is arranged at one end of the upper surface of the workbench, a laser generator is slidably connected to the lower surface of the cantilever, and an adjusting platform is arranged on the upper surface of the workbench; a metal plate is placed on the adjusting platform and cut through the laser generator, air channels are symmetrically arranged on the inner bottom face of the cantilever, the tails of the air channels are connected with air inlet pipes through tee joints, the air inlet pipes penetrate through the workbench and extend into the inner cavity, a filter barrel is arranged in the cavity of the workbench, the air inlet pipes are connected with the filter barrel, and the upper surface of the filter barrel extends outwards to form an air outlet pipe. The tail end of the air outlet pipe is connected with a filter box, and an exhaust fan is assembled at the tail end of the filter box. The air ducts are symmetrically arranged on the inner bottom face of the cantilever, smoke generated during cutting can be effectively guided into the filtering system, the smoke dust collecting efficiency is guaranteed, and the smoke generated during cutting of the laser generator is filtered twice through the filtering barrel and the filtering box.

The utility model discloses a no-dead-corner joint convenient to plug and clean, which comprises a first joint main body, a second joint main body and a box body, the box body is provided with a mounting groove, and the first joint main body and the second joint main body are both positioned in the mounting groove. A silica gel soft plug is positioned between the first connector body and the second connector body, one end of the first connector body is connected with a first silica gel tube, and one end of the second connector body is connected with a second silica gel tube. And the first joint main body and the second joint main body respectively comprise one of a thread straight joint, a thread elbow, a straight joint connecting piece, an elbow connecting piece and a three-way connecting piece. Compared with existing various connectors in the market, the dead-corner-free connector convenient to plug, pull and clean has the advantages that cleaning is free of dead corners in the structure aspect, disassembly and assembly are convenient in the use aspect, the working efficiency is greatly improved, the reliability is high, and the maintenance cost is low.

The utility model discloses a novel three-way joint connector, which comprises a three-way connector used for connecting an inverter and bus connectors arranged on two sides of the three-way connector, and the three-way connector comprises a middle bayonet socket connected with the inverter and a three-core bayonet socket connected with the bus connectors. The three-core bayonet sockets are symmetrically arranged on the left side and the right side of the middle bayonet socket, a polarity conversion PCB is installed on the side, away from the middle bayonet socket, of the three-way connector, and the bus connector comprises a connecting plug connected with the three-core bayonet sockets and a three-core wire arranged on the inner side of the connecting plug. And the end part of the three-core wire is mounted on one side, far away from the three-core bayonet socket, of the connecting plug through a locking head thread. According to the three-way connector, the PCBA is arranged in the three-way connector to realize L and N polarity conversion, the bus connector does not need special modification and a fool-proof structure, the bus connector can be directly used in a plug-in manner, the assembly is simple, materials and assembly procedures are reduced, and the production cost is reduced.

The utility model relates to the field of sample injection valves, in particular to a high-rise building concrete pump pipe three-way connecting device which comprises two bent pipes and a connecting assembly, and the connecting assembly comprises a hoop, a cylindrical flow guide plate, a strip-shaped sealing ring and a circular sealing ring. Two bent pipes with the radius of 0.5 m are welded and assembled to form the three-way pipe, the strip-shaped sealing rings are arranged at the welding positions to increase the sealing performance of the three-way pipe, the hoops, the cylindrical flow guide plates and the circular sealing rings are arranged at pipe openings of the formed three-way pipe, and when the three-way pipe is connected with other pipelines, the sealing performance of the three-way pipe is improved. The cylindrical flow guide plate exposed out of the pipe opening is inserted into the connecting pipeline, then the circular sealing ring is arranged on the outer side of the connecting position of the three-way pipe and the connecting pipeline in a sleeving mode, so that sealing performance is improved, finally, the position of the connecting position is fixed through the hoop, and the cylindrical flow guide plate can conduct flow guide during conveying to reduce washing of the connecting position.

The present application relates to the technical field of building electrical pipeline construction, and particularly relates to a prefabricated and assembled electrical quick-mounting pipeline, a connecting device and a system, which comprises a power supply, a switch, a grounded electrical appliance, a non-grounded electrical appliance, and a flexible pipeline, a straight-through connector, a terminal electrical appliance connector and a tee connector; the flexible pipeline comprises at least one connecting component one; the straight-through connector and the terminal electrical appliance connector comprise at least one connecting component two; the tee connector comprises three connecting components two; the tee connector and the flexible pipeline are connected through the connecting component one and the connecting component two; the power supply, the switch, the grounded electrical appliance and the non-grounded electrical appliance are installed and arranged through a single flexible pipeline. The quick-plug-in mode is used, the quality is easy to control, the operation efficiency is high, the mass production and high-quality production requirements can be realized, and the engineering prefabrication requirements required by the assembled building are met.

This invention provides a design and installation method for a ground source heat pump pipeline tee connector, belonging to the technical field of ground source heat pump pipeline tee connectors. This invention establishes classification standards for fit and angle levels, selects appropriate connection parameters based on the working pressure of the ground source heat pump system and the installation environment, optimizes comprehensive performance through multi-layer structure thickness distribution, achieves precise alignment of the pipeline axis through a constraint optimization algorithm, avoids stress concentration through graded locking operations, improves connector adaptability through sliding stroke control, and achieves precise locking of the locking block and slot by using a throttle control screw to drive the moving ring to rise and fall. Ultimately, this forms a complete design and installation method for ground source heat pump pipeline tee connectors, effectively solving the technical problem of balancing connection strength and installation convenience under different operating conditions in existing ground source heat pump pipeline tee connectors.

A ventilation cabinet of a frame structure comprises a frame body, a bottom plate and a base. The frame body is a three-dimensional square frame composed of four horizontal frame strips, four vertical frame strips and four right-angle tee joints. The four right-angle tee joints and the four horizontal frame strips are sequentially connected to form the frame top of the frame body, and the top ends of the four vertical frame strips are connected with the four right-angle tee joints respectively and are perpendicular to the frame top. The bottom plate is installed at the bottom of the frame body, the bottom ends of the four vertical frame strips are connected with the four corners of the bottom plate respectively, the frame body is connected with the base through the bottom plate, and the fan is installed on the top face of the bottom plate. The frame body 1 is composed of the four horizontal frame strips, the four vertical frame strips and the four right-angle tee joints, and compared with an original complex structure using aluminum profiles with twelve edges and eight tee joints, the number of needed materials and parts is greatly reduced, and therefore the material cost and the manufacturing cost are reduced; the fan is mounted on the bottom plate, and the bottom plate is respectively connected with the four supporting structures of the frame body, so that the mounting stability of the fan is enhanced, and the safety risk is reduced.

This invention discloses a feeding gun with minimal material accumulation. The feeding gun head is screwed to one end of the feeding gun tube, and the other end of the feeding gun tube is screwed to one end of the feeding connection tee. The other end of the feeding connection tee is connected to one end of the tee connector, and the other end of the tee connector is connected to a cylinder. The push rod inside the cylinder is a hollow tube with a push rod head at its front end. The feeding gun tube includes an outer tube and an inner tube, which are sleeved together. The inner tube has a balance hole. The single-sided gap between the push rod and the inner wall of the inner tube is less than 1 mm, the single-sided gap between the push rod head and the inner wall of the feeding gun head is less than 1 mm, and the single-sided gap between the push rod head and the inner wall of the inner tube is less than 1 mm. This invention provides a technical solution that reduces the weight of the push rod by using a hollow tube as the push rod and controls the gaps between the push rod and the inner tube, the push rod head and the material gun head, and the push rod head and the inner tube. This reduces the accumulation of material on the inner wall of the material gun head and the material gun tube while increasing the pushing efficiency of the push rod. It solves the problem that in existing feeding guns, insufficient heating leads to incompletely expanded material sticking to the side wall of the push rod and retracting into the material gun head and the material gun tube as the push rod retracts. The material accumulated in the material gun head and the material gun tube hardens, affecting the smooth operation of the existing push rod (solid and slender) and causing the push rod to deform.

The utility model relates to a three-way connecting piece and a vacuum packaging bag, and relates to the field of three-way connecting pieces, the vacuum packaging bag comprises a supporting frame and a sealing bag, the supporting frame comprises a connecting rod and a three-way connecting piece; an air port is formed in the three-way connecting piece, the connecting rod is hollow and is communicated with the interior of the three-way connecting piece, and the connecting rod is inserted into the three-way connecting piece to form a supporting frame; and the sealing bag is covered outside the supporting frame. According to the vacuum packaging bag, the supporting frame is additionally arranged in the vacuum packaging bag, the packaging shape is kept through the supporting function of the supporting frame, products are protected in the supporting frame, the probability of extrusion deformation and damage caused by direct contact between objects and the products in the product storage and transportation process is reduced, and the protection effect on the objects is improved.

The invention discloses a novel Y-shaped aluminum three-way pipe and a machining method thereof.The Y-shaped aluminum three-way pipe comprises a U-shaped hollow aluminum pipe body and a vertical aluminum pipe body integrally formed at the top end of the U-shaped hollow aluminum pipe body, the vertical aluminum pipe body is communicated with the interior of the U-shaped hollow aluminum pipe body, and a protruding pipe is integrally formed at the outlet position of the vertical aluminum pipe body and the end of the U-shaped hollow aluminum pipe body; the inner diameter of the convex pipe is larger than, equal to or smaller than that of the U-shaped hollow aluminum pipe body; the machining method comprises the following steps that A, the aluminum material is prepared; b, bent pipe forming is achieved through bent pipe machining equipment, and water pressure operation is conducted again through water pressure equipment; c, the finished product in the step B is subjected to lubricant repressing operation; and D, automatic equipment is used for machining and forming. The three-way joint is reasonable in structural arrangement and convenient to install and use, and the stability and reliability of three-way connection can be guaranteed; meanwhile, the method is simple in process, favorable for saving materials and reducing cost, and good in environment-friendly effect.

The utility model provides a stink pollution source sampling device which comprises a sampling box and an air extracting pump, a connecting tee joint is arranged in the sampling box, the connecting tee joint is provided with a first connector, a second connector and a third connector, the stink pollution source sampling device further comprises a sampling assembly, a washing assembly and a collecting assembly, the sampling assembly comprises a sampling gun and a sampling pipe, and the sampling pipe is matched with the first connector. The flushing assembly comprises a flushing valve and a water inlet pipe, the flushing valve is matched with the second connector, the collecting assembly comprises a connecting pipe, a connector and an air bag, a movable rod and a spring are arranged in the third connector, the movable rod is provided with a connecting hole, the connecting pipe is detachably connected with the third connector, and the connecting pipe is communicated with the connecting hole and pushes the movable rod to move when installed on the third connector. According to the sampling device, the technical problem that pollution gas is attached to the inner wall of the sampling system to cause errors of detection results or influence on normal use of the sampling system is solved, and the technical effects that the sampling device is convenient to clean and cross contamination of samples is prevented are achieved.

The invention discloses a coating sleeve of an eccentric structure for rerepairing defects of a pipeline plugging tee joint. The cladding sleeve for the re-repairing eccentric structure comprises a three-way pipe, the three-way pipe is divided into a three-way pipe upper part and a three-way pipe lower part, and the three-way pipe upper part and the three-way pipe lower part are connected with a cladding plugging tee joint; the three-way pipe further comprises a reducing pipe upper portion and a reducing pipe lower portion, the reducing pipe upper portion and the reducing pipe lower portion are connected with and wrap part of the pipeline connected with the plugging three-way pipe, the reducing pipe upper portion and the reducing pipe lower portion form a reducing pipe, the two ends of a main pipe of the three-way pipe are connected with a large-diameter opening of the reducing pipe, a small-diameter opening of the reducing pipe is connected with the pipeline, and a branch pipe of the three-way pipe is connected with the end socket. The tee joint and the reducing pipe standard parts are combined and assembled, a large repairing cavity is formed, the defect coating requirement of the eccentric structure of the pipeline is met, the proper standard parts can be selected for combined repairing according to the specification and size of the defect, and the repairing cost is reduced.

The utility model discloses a lubrication protection device for wheels of a crown block, belongs to the technical field of crown block protection, and solves the problems that the rail gnawing phenomenon of the crown block is easily caused after the existing crown block is lack of lubrication during operation, and the normal operation of the crown block is influenced. The crown block wheels are installed below the crown block girder, the oil supply system is installed on the crown block girder, an oil pump of the oil supply system is connected with a main oil pipe, and the main oil pipe is connected with two branch oil pipes through an oil pipe tee joint. The oil brushes are installed at the tail ends of the branch oil pipes through the oil pipe connectors, and the two oil brushes make contact with the surfaces of rims on the two sides of the crown block wheel. The rail gnawing prevention device is simple in structure and stable in operation, effectively avoids the rail gnawing phenomenon of the crown block caused by insufficient lubrication, reduces dangerous factors, and enables the crown block to operate more smoothly.

This utility model discloses an S-type tee connector that is easy to connect and install. It includes an S-type tee with a connecting pipe at one end. Movable sealing rings are provided on the outer sides of both ends of the S-type tee. Moving screws that move with the sealing rings are provided on the outer sides of both ends of the S-type tee. A compression ring that moves with the moving screws is provided at the end of the S-type tee. A rubber sleeve is provided at the end of the compression ring. Compared with existing technologies, the double sealing structure of the sealing rings and rubber sleeve significantly enhances the sealing performance between the S-type tee and the connecting pipe during connection, effectively preventing media leakage, ensuring a stable connection, and reducing resource waste or safety hazards caused by sealing problems. During connection, the connecting pipe pushes the sealing rings, moving rings, and other components together, causing the compression ring to compress the rubber sleeve, achieving initial fixation of the S-type tee and the connecting pipe before welding.