106results about How to "Reasonable mechanical structure" patented technology

The invention discloses a forging press used for metal machining, and relates to the technical field of metal forging. The forging press used for metal machining comprises a base plate. Fixed columnsare fixedly connected to the two sides of the top of the base plate correspondingly, and a workbench is movably connected to the surfaces of the two fixed columns. A vertical plate is fixedly connected to the left side of the top of the workbench. A lead screw is rotatably connected to the right side of the vertical plate. Movable blocks are connected to the two sides of the surface of the lead screw in a threaded mode, and clamping plates are fixedly connected to the surfaces of the movable blocks. A transverse plate is fixedly connected to the top ends of the fixed columns. A moving device is fixedly connected to the top of the transverse plate. According to the forging press for metal machining, a workpiece can be clamped and fixed conveniently, the situation that the machining effect is affected due to deviation of the workpiece in the machining process is avoided, and the safety in the machining process is improved; and the position of a forging device can be changed convenientlyso that different positions of the workpiece can be forged, the operating mode is flexible, manual operation is facilitated, and working efficiency is improved.

The invention relates to an automatic capping packaging machine which comprises a stand and an electronic control device, wherein a working platform is arranged on the stand; a conveying track is fixedly arranged on the working platform; a cover taking device and a capping device are respectively arranged above the conveying track along the direction of forward motion of the conveying track; and a cover storage device is arranged at one side (close to the cover taking device) of the conveying track. The automatic capping packaging machine is simple in working principle, simple and reasonable in mechanical structure and short in capping time, thus effectively improving the capping efficiency of bottle cans and reducing the production cost.

The invention relates to a system and a method for controlling a continuous auto-packing machine. The system comprises a rotary encoder, a position sensor, a color scale sensor, a vertical-seal drawing roller driver and a system controller; function parameters are input and stored into a memory of the system by corresponding function light touch keys of the system controller; a main motor of a packing machine runs; the system works; a vertical-seal drawing roller starts; and the speed of the vertical-seal drawing roller and the speed of the main motor are synchronous, so as to finish the operations, such as packing, paper letting-off, bag length, size and speed setting, pictorial trade mark positioning, automatic system controlling, error compensating, and the like. As a horizontal-seal roller eccentric mechanism is eliminated, the system has the advantages of reasonable mechanical structure, simple control arrangement and convenient system operation. When the bag length is different, only the corresponding length dimension needs to be reset, therefore, other structures of the packing machine are not required to be adjusted. The system is applicable for the control to the bag making, the cursor tracking and the cutting operations of the continuous auto-packing machine.

The invention discloses a shearer for the decorated metal chain. A stand is provided with a conveying mechanism, a length control mechanism and a shear mechanism that fit the conveying mechanism. The conveying mechanism of the decorated metal chain comprises a feed table of the decorated chain, a couple of feed plastic core-rubber tires that contact with each other and a rack-and-pinion mechanism that is driven by a piston shaft of the transmission cylinder and connected with the plastic core-rubber tires. The length control mechanism is a scaleplate and a length control device that is connected with the plastic core-rubber tire. The shear mechanism is a side knife that is installed on the stand which is below the plastic core-rubber tires and a moveable knife that fits the side knife and is connected with the piston shaft of the shear cylinder. The decorated chain of the invention hangs in the natural state. The invention has simple mechanical structure and high measuring accuracy, which leads a good quality of the product and high efficiency of the shearing.

The invention discloses stamping equipment for hardware production and machining, and relates to the technical field of hardware stamping. The stamping equipment comprises a shell; supporting columnsare fixedly connected to the two sides of the top of the shell, and a box body is fixedly connected to the top ends of the supporting columns; a screw rod is rotationally connected between the two sides of the inner wall of the box body, the two sides of the surface of the screw rod are both in threaded connection with movable blocks; a movable plate is fixedly connected to the bottoms of the movable blocks, and a stamping device is fixedly connected to the bottom of the movable plate; and the bottom end of the stamping device penetrates through the box body and extends to the outside of the box body, and a die is fixedly connected to the end, located outside the box body, of the stamping device. According to the stamping equipment for hardware production and machining, a stamping table isdriven to move back and forth through a moving device, thus, raw materials can be put into the lower portion of the die, the situation that hands of workers are injured by the die is avoided, the safety is improved, the position of the die can be adjusted conveniently, stamping can be conducted on different positions, and the machining effect can be improved easily.

The invention discloses an essence processing and production raw material filtering and crushing device which comprises a shell, wherein crushing cabins are fixedly connected with two sides of the inner wall of the shell; a moving device is fixedly connected with the left side of the top of the shell; the bottom end of the moving device penetrates through the shell and extends into the shell; a screening net is fixedly connected with one end on the inner wall of the shell, of the moving device; two sides of the screening net are respectively in sliding connection with two sides of the inner wall of the shell; an outer frame is fixedly connected with the right side of the surface of the shell; and a motor is fixedly connected with the bottom of the inner wall of the outer frame. The invention relates to the technical field of essence processing. By adopting the essence processing and production raw material filtering and crushing device, the screening net is driven to move through the moving device, raw materials can be screened, impurities can be removed, the purity of the raw materials can be improved, essences can be extracted, the raw materials can be dually crushed, the crushing effect of the raw materials can be improved, the crushing uniformity can be ensured, and the product quality can be improved.

The invention discloses a marine high-pressure dynamic hose flat steel bar locking device which is used for manufacturing lining pipelines of liquid conveying high-pressure hoses such as large petroleum pipelines as well as large and long power cables and submarine cables. According to the device, advanced mechanical structure and electric device control technologies are used, the revolving speed of a paying-off motor is controlled, the automatic constant-tension paying-off from a full disk to an empty disk for a flat steel bar can be achieved, the laid flat steel bar is subjected to compression moulding through a novel moulding roller which is located inside a steel bar traction driving gear case, and the flat steel bar is formed in advance through a steel bar guide device and then led to a stranding point in a positioning mode to be locked and formed, so that a locking hose is formed, or the flat steel bar is buckled on a cable to achieve steel band armoring.

The invention discloses an integrated cover sorting and arranging mechanism for an automatic can seamer. Only one driving air cylinder is used as a power source; and sorting and arranging operation for abnormally-shaped can covers in square, polygon and the like is realized at the same time. The integrated cover sorting and arranging mechanism comprises a stander, a cover bin part, a sliding boltpart, the driving air cylinder, a can body clamp and a can cover positioning baffle plate, and is characterized in that: a small sliding bolt capable of sliding forth and back along a large sliding bolt and a cover sorting fork which is positioned at the front end of the large sliding bolt and capable of sliding up and down are arranged in the sliding bolt part; inclined surfaces which are matched with each other are formed at the front end of the small sliding bolt and in the middle of the cover sorting fork; and when the small sliding bolt moves forwards relative to the cover sorting fork, the cover sorting fork is forcibly pressed down. An aim of sorting and arranging covers is fulfilled by using only one air cylinder; and the system has a simple structure, is convenient to control, and has high work efficiency.

The invention discloses a PVC (Polyvinyl Chloride) roll material pulling machine with good stability, which comprises a bottom plate. Damping devices are fixedly connected to two sides of the top partof the bottom plate; a cross plate is fixedly connected to the top parts of the damping devices; lifting devices are fixedly connected to the top part of the cross plate; a movement plate is fixedlyconnected to the top ends of the lifting devices; a pressing plate is fixedly connected to one side of the bottom part of the movement plate; a first support rod is fixedly connected to the top part of the cross plate; and a support plate is fixedly connected to the top end of the first support rod. The invention relates to the technical field of material pulling machines. According to the PVC roll material pulling machine with good stability, the movement plate conveniently flattens a PVC roll material, creases at the surface of the PVC roll material are eliminated, a mechanical structure isreasonable, the occurrence of the phenomenon that a work state of the device is influenced by vibration is avoided, the stability is improved, the interference suffered by the device is reduced, the device can conveniently move to different positions for working, and meanwhile, the device can be conveniently fixed with the ground, so that the practicability of the device is improved.

Disclosed are a frame and a solar heat collection device with the frame. The frame comprises a frame unit; the frame unit comprises ground fixed frames and a rotating cross beam; the two ends of the rotating cross beam are arranged on the opposite ground fixed frames respectively; the rotating cross beam is fixedly connected with suspension frames which are located below the rotating cross beam and are spaced; a gravity balance beam is connected with the rotating cross beam upwards; the centers of the curved surfaces of the suspension frames coincide with projections of the rotating cross beam and the gravity balance beam in the static state on the suspension frames; reflection plates are fixed to the suspension frames; a vacuum heat collection pipe extending in the direction the same as the direction of the rotating cross beam is arranged on the lower portion the rotating cross beam in a tight-attaching mode. The frame of the solar heat collection device is reasonable in carrying mechanics structure, the metal consumption of the frame is greatly reduced, the overall mass is greatly reduced, meanwhile, the overall strength and structural stability performance are greatly improved, the wind-resisting strength is greatly improved, and the rotating synchronization and the stability of the frame are improved.

The invention discloses a riveting device of a brush box. The riveting device comprises a base plate, a top plate, a guiding device, a horizontal riveting device, a vertical riveting device, a feeding device, a height-adjustable limit device, a feeding-position-adjustable limit device and supporting pellets. By combining structures of strong practicability such as a wedge structure and a dovetail structure, adopting the wedge structure to convert direction of force and the dovetail structure to guide and position, the overall riveting device of the brush box is reasonable and compact in structure, accurate in positioning, convenient to operate and good in popularity, so that convenience is brought to riveting between the brush box and a brush box fixing bracket during production of a permanent magnet direct-current motor.

The invention discloses a volume-adjustable multi-mould quantitative pouring trough, wherein a melt pouring main body (1) is supported by a support, a plurality of independent quantitative pouring troughs (9) partitioned by partition plates (5) are arranged on the melt pouring main body (1), adjusting bar supporting plates (4) are fixedly arranged on the quantitative pouring troughs (9), adjusting bar supports (3) are fixedly arranged on the adjusting bar supporting plates (4), adjusting bars (2) are arranged on the adjusting bar supports (3) and are inserted into the quantitative pouring troughs (9), all the quantitative pouring troughs (9) are connected with a liquid inlet (10) and an overflow gate (11), and a heating device is arranged at the bottom of the melt pouring main body (1). An external driving device is utilized to drive the whole body of the pouring troughs to rotate around a support shaft, and then multi-mould quantitative pouring can be realized. According to the volume-adjustable multi-mould quantitative pouring trough of the invention, the production effectiveness and product quality can be improved, and the timely regulation of the ingot weight and heat insulation to melts can be realized.

The invention discloses a sealing and cutting tracking control system for a continuous automatic packaging machine. The sealing and cutting tracking control system comprises a PLC controller, a proximity switch, a photoelectric switch, a longitudinal sealing driver and a horizontal sealing driver, wherein the proximity switch and the photoelectric switch are unidirectionally connected to the PLC controller; and the longitudinal sealing driver is unidirectionally connected with a longitudinal sealing motor. A sealing and cutting tracking control method for the continuous automatic packaging machine comprises the steps of selecting a cursor tracking mode, comparing a received photoelectric switch signal with a sealing position signal and a proximity switch signal, then comparing the photoelectric switch signal with a cutting cursor position, if the two are the same, continuing to execute a program according to original parameters by the controller, if the two are different, calculating the error, correcting by adjusting the cutting cursor position, and executing the program according to new parameters by the controller, until the speed of a paper feeding wheel meets the needed requirements. According to the sealing and cutting tracking control system and the sealing and cutting tracking control method disclosed by the invention, a horizontal sealing eccentric wheel mechanism of the packaging machine is omitted, the system is convenient to operate, and when the lengths of bags to be made are different, only corresponding length sizes need to be reset in the system.

The invention discloses a high-temperature-resistant motor applicable to a high-temperature electric submersible pump. A motor shaft is of a hollow structure; one end of the motor shaft stretches to a top housing, and the end part thereof is sealed; the other end of the motor shaft stretches to a tail housing, and an oil inlet is formed in the end part thereof; a supercharging spiral blade and a filter are sequentially arranged at the oil inlet; stabilizing bearings are arranged between adjacent unit rotors; stabilizing bushings and the stabilizing bearings form friction pairs; a thrust bearing is mounted between the top housing and the motor shaft; a static annular plate and a movable annular plate of the thrust bearing form a friction pair; the movable annular plate is fixedly connected with the motor shaft through a flat key; all the friction pairs are lubricated through oil throwing holes in the motor shaft; an oil storage space is formed in the upper part of the movable annular plate of the thrust bearing; the motor shaft is isolated from lubricating oil in the oil storage space through a main shaft spacer bush; a radial supporting bushing is mounted between the tail housing and the motor shaft, and the motor shaft on the upper part of the radial supporting bushing is sleeved with a main shaft protecting tube; an oil returning passage is formed in the housing body of the tail housing; a shading plate is arranged above the oil returning passage, and an annular sedimentation tank is arranged on the tail housing on the outer side of the oil returning passage.

The invention discloses a multi-mode quantitative indium ingot automatic casting system; a base (4) is provided with a support seat (3); a main pouring body (1) is installed on the support seat (3) and is connected with a pouring driving device; the main pouring body (1) is provided with a plurality of indium melt quantitative grooves (10), each of which is internally provided with an adjusting rod (2); the main pouring body (1) is provided with a heating device; a rolling over base (12) is provided with a rotating shaft (18) connected with the rolling over base in a transmission way; the rotating shaft (18) is provided with a multi-ingot casting mould (14) used for correspondingly receiving from the indium melt quantitative grooves (10) of the main pouring body (1); and a cooling groove (13) is installed under the multi-ingot casting mould (14). The multi-mode quantitative indium ingot automatic casting system can improve the production benefit and the product quality, lightens the labor intensity, and protects the health of workers.

The invention discloses an automatic box and lid feeding mechanism. The automatic box and lid feeding mechanism comprises a conveying belt. The outer surface of the lower end of the conveying belt isfixedly connected with a gear motor. One side of the outer surface of the gear motor is fixedly connected with a speed regulator. The outer surface of the speed regulator is movably connected with a box distributing air cylinder. The outer surface of the upper end of the box distributing air cylinder is movably connected with a box pulling air cylinder. The outer surface of the upper end of the box pulling air cylinder is movably connected with a clamp air cylinder. The outer surface of the upper end of the clamp air cylinder is movably connected with a box and lid holding frame. A position limit air cylinder is arranged at one side of the outer surface of the box and lid holding frame. A to-be-fetched box position is arranged on the outer surface of the upper end of the speed regulator. The outer and inner surfaces of the lower end of the box and lid holding frame are fixedly connected with an incoming material assembly line. According to the automatic box and lid feeding mechanism, in the fields of mechanical engineering and automation, an automatic boxing machine is provided with an automatic box and lid feeding and discharging mechanism, matching is achieved, using is flexible,the equipment continuity is improved, labor input is reduced, and the phenomenon that staff are accidentally injured by machines when taking and placing boxes and lids is avoided.

The invention discloses an unequal-height V-shaped bridge pier. The bridge pier is in a V shape and comprises a left V leg and a right V leg in a V shape relative to each other, wherein the upper ends of the left V leg and the right V leg are different in height; the lower ends of the left V leg and the right V leg are located on a bearing table; supports are arranged at the upper ends of the left V leg and the right V leg; the lower parts of the left V leg and the right V leg are connected through a lower tie beam; and the upper parts of the left V leg and the right V leg are connected through an inclined tie beam. The unequal-height V-shaped bridge pier disclosed by the invention saves space and enables space and enabling the building of a bridge pier in a limited space, and has a more reasonable mechanical structure.

The invention discloses a convenient pavement rolling and spreading mechanization apparatus. The convenient pavement rolling and spreading mechanization apparatus comprises a rolling and spreading bracket undercarriage, a rolling and tying framework installed on the spreading and rolling bracket undercarriage and rolling shafts installed on the rolling and tying framework; the rolling and spreading bracket undercarriage comprises a rolling and spreading roller group which is arranged at one end and can guide a paving locking plate to the ground, a chassis for carrying the rolling and tying framework is arranged at the middle part of the rolling and spreading bracket undercarriage, and the rolling and tying framework can rotate for 90 degrees by taking the center of the chassis as the axis; the rolling and tying framework comprises a rectangular undercarriage, two ends of the undercarriage are provided with the rolling shafts by virtue of a supporting frame, one end of the undercarriage is provided with a driving device driving the rolling shafts to rotate, and the undercarriage is provided with a plurality of rollers. The convenient pavement rolling and spreading mechanization apparatus is independent and is separated from a carrier and can be loaded by utilizing a pulling arm hook of the carrier, also can be loaded by virtue of the hoisting of a crane and also can be loaded by virtue of a forklift, thereby being flexible and convenient to operate and applicable to various different environments; the convenient pavement rolling and spreading mechanization apparatus can be used for rapidly and conveniently spreading and rolling a metal material pavement, the metal material pavement can be used for a vehicle with the carrying capacity of 70 tons to pass through and is more durable, and the difficulty that an existing product only can be operated on a soft pavement can be solved.

The invention provides a mechanical structure of a mixing chamber assembly of a polyurea spray gun and belongs to the technical field of spray polyurea elastomers. The mixing chamber assembly comprises a first mixing chamber assembly body and a second mixing chamber assembly body. The first mixing chamber assembly body is composed of four material conveying channels and a first mixing chamber. The second mixing chamber assembly body is composed of a second mixing chamber, a flow guide cylinder, four flow guide plates, a sleeve cover, four small screws, a baffle and six big screws. During operation of the spray gun, two components of a polyurea material are conveyed into the first mixing chamber through the material conveying channels for primary head-on collision mixing, instantly a strong chemical reaction occurs, then under the action of high pressure, the material rapidly passes through a flow guide channel to vertically enter the second mixing chamber for secondary head-on collision mixing, and a product generated after a complete chemical reaction is sprayed out. The two components of the polyurea material are subjected to head-on collision mixing twice and mixing in the flow guide channel once, so that the more sufficient reaction of the material is achieved, the mixing effect of the polyurea material is improved, and a better coating can be obtained.

The invention belongs to a lightweight dismantle-free heat insulation template integrated composite heat insulation system and manufacturing technology thereof. The lightweight dismantle-free heat insulation template integrated composite heat insulation system comprises a cast-in-place concrete base wall body, a heat insulation template inner protective layer, an organic heat insulation material layer, seamed reinforced glass wool or a rock wool board inorganic material insulation layer, and a polymer mortar layer are sequentially arranged on the outer side of the cast-in-place concrete base wall body, and are fixedly mounted and connected with the cast-in-place concrete base wall body through pre-embedded anchoring connecting parts, and the outer surface of the seamed reinforced glass wool or the rock wool board inorganic material insulation layer is coated with the polymer mortar layer. The lightweight dismantle-free heat insulation template integrated composite heat insulation system has the advantages that structure design is reasonable, the lightweight, high intensity and low heat conductivity performance are achieved, the comprehensive cost can be lowered, the load of buildings is relieved, the whole thickness of the mortar layer on the outer surface of the wall body is advantageously controlled, and the safety of anti-cracking, anti-falling-off and anti-fire is improved.

The invention discloses a rehabilitation training wheelchair, which comprises a chair seat, an auxiliary frame pole and a training pedal, wherein a supporting pillar is fixedly arranged at the back end of the bottom of the chair seat; wheel axles are connected to both left and right sides of the bottom of the supporting pillar; a big wheel and a small wheel are respectively arranged on the outer sides of the wheel axles; the training pedal is arranged in the inner cavity of a wheel disc stationary shaft; second auxiliary wheels are arranged on the left and right sides of a gear disc by virtue of second auxiliary wheel frames; and foot plates are arranged on the front surfaces of the second auxiliary wheel frames. The rehabilitation training wheelchair is simple in structure, convenient to use and reasonable in mechanical structure; the leg muscles of patients can be effectively trained and recovered, so that some patients with legs hurt can be trained slowly; and moreover, the wheelchair can serve as wheelchairs of general types, so that the wheelchair can effectively save a great amount of costs and can facilitate use as well.

The invention discloses an automatic casting machine of cadmium ingot. A bracket (10) is provided with a variable frequency motor (6) and a guide rod (11); the variable frequency motor (6) is connected with a screw structure (4) which is provided with a screw lifting bracket (12) in guide connection with the guide rod (11); the screw lifting bracket (12) is provided with a bailer rotating shaft (13) which is at least provided with a bailer (2); a bailer cylinder (3) is connected between the bailer (2) and the screw lifting bracket (12); a cadmium liquid pool (1) is provided with a liquid level sensor (8); a rotating shaft (16) is provided with a casting mould (15) and is connected with an overturn mechanism; the motor (14) is connected with a conveyer belt (18); and the casting machine operated on the guide rail (7) can be in butt joint with the cadmium liquid pool (1) and the casting mould (15). The invention has low labor intensity and high casting efficiency, can prevent oxidation of cadmium liquid, and ensures stable and accurate casting amount.

The invention discloses a three-dimensional measurement instrument for human knee-joint kinematics. The three-dimensional measurement instrument comprises a testing circuit, a testing rack (1), a thigh support rack (2), a calf binding part (3) and a thigh binding part (4) arranged at the top end of the thigh support rack (2). The testing rack (1) is welded with the thigh support rack (2) and comprises a testing rack body (5) and a testing rack base (6). The three-dimensional measurement instrument for human knee-joint kinematics has following beneficial effects: a mechanical measuring mechanism and a sensor circuit are utilized for acquiring data on knee-joint kinematics so that high-precision acquisition and calculation of knee joint rotation and data on translational motion can be achieved.

The invention relates to a raised foundation used for lashing of a container. The raised foundation used for lashing of the container comprises a standard corner fitting hole (1) formed in the upper end face (2), the upper end face (2) is round, the standard corner fitting hole (1) is formed in the centre of the upper end face (2), the periphery of the standard corner fitting hole (1) is provided with four side walls (4) corresponding to four sides of the standard corner fitting hole (1), the upper end of the side wall (4) is arc-shaped and matched with the upper end face (12), the lower end of the side wall (4) is straight line, the lower ends of four side walls (4) form a square, the side wall (4) is gradually amplified from the upper side to the lower side, the lower end of the side wall (4) is connected to the cabin port cover. The raised foundation used for lashing of the container has the advantages as follows: the forging method is used for having one-time forming, the upper end face opened with the corner fitting hole is a small round, the mechanical structure is reasonable, the production efficiency is high and the clean and environment protection characteristic is achieved.

The invention relates to the technical field of elevator industry, and in particular relates to a soft drive door without mechanical connecting rod, the soft drive door comprises a left door, a right door, a motor, a gearing-down platform and a transmitted platform, wherein a reduction gear is fixedly arranged on the gearing-down platform, the spindle of the motor is connected with a first-stage gear which is also connected with the reduction gear through a main gear belt, the reduction gear is connected with a two-stage gear through a rotating shaft, a driven gear is fixedly arranged on the transmitted platform and connected with the two-stage gear through a gear transmission belt on which a left slider and a right slider are symmetrically and fixedly arranged, the left slider is fixedly connected with the top end of the left door, the right slider is fixedly connected with the top end of the right door, and the motor is also connected with a rotary encoder. When in use, the soft drive door without mechanical connecting rod is high in transmission efficiency, low in failure rate and running noise, and capable of avoiding slipping and ensuring accurate positioning. The soft drive door without mechanical connecting rod has the advantages of simple structure, rational arrangement, low manufacture cost and the like.

An automatic adjusting arm for brake gaps of automobiles belongs to the technical field of automobiles, and in particular relates to a device for automatically adjusting the gaps between brake drums and friction plates of automobiles. The automatic adjustment arm of the brake clearance of the automobile includes a housing, in which a large worm gear and a large worm are installed, and a small worm gear is sleeved on the other side of the large worm, and the end of the small worm gear is provided with teeth, and there are teeth on the large worm The teeth meshing with the teeth at the end of the small worm wheel are provided with a one-way clutch device on the side of the small worm wheel. The one-way clutch device includes a small worm and a clutch gear. Connected to the gear, the small worm meshes with the small worm wheel, and a control arm assembly is arranged at the end of the large worm wheel, and the clutch gear meshes with the control arm assembly. Due to the addition of a small worm wheel and a small worm, the automatic adjustment arm has an internal working stroke of 360 degrees, and the range of motion of the control arm can reach about 220 degrees, which improves the reliability and stability of the automatic compensation of the adjustment arm, and is very convenient to use .

The invention discloses a stainless steel hard-seal pipe joint, which consists of a stainless steel joint main body, a stainless steel nut, and a stainless steel seal ring; the inner cavities of the two end parts of the joint main body are conical surfaces; the parts of the conical surfaces extending to the inside are cylindrical surfaces to form faucets of the two end parts of the joint main body; the diameter of the outer end of the conical surface is larger than the diameter of the inner end thereof; outer threads are arranged at the two end parts of the joint main body; inner threads are arranged in a nut cavity; the nut is provided with an end cover with an opening in the middle; the nut is connected with the threads at the two ends of the joint main body; and the stainless steel seal ring is arranged in an empty cavity formed between the faucets of the two end parts of the joint main body and the inner cavity of the nut as well as the outer wall of a connected stainless steel pipe workpiece.

The invention discloses a people and goods dual-purpose vertical-transportation building construction elevator and belongs to the field of elevators. According to the people and goods dual-purpose vertical-transportation building construction elevator, a steel wire rope traction transmission mode is adopted, a single column and two cages are arranged, the two cages are arranged on the two sides of a main frame respectively, and each cage moves up and down along an angle iron guide rail on one side of the main frame through a pulley on one side of the cage; counter-weight pulley guide rails are arranged on the inner sides of the main frame, and counter weights move up and down along the counter-weight guide rails on the inner sides of the main frame through pulleys of the counter weights; a traction machine is positioned and installed at the top end of the main frame; one end of each traction steel wire rope is connected with the top of the cage on the corresponding side in a balanced and hanging mode; the tensile strength of each traction steel wire rope is equal to or higher than 1570 N / mm, and the safety coefficient of each traction steel wire rope is equal to or lager than 14.8; the weight of the counter weights is two fifths or half the sum of the weight of the cages and the rated deadweight of the cages. The weight of the cages and approximately half of the rated deadweight are balanced out by means of the counter weights, actual required driving power is greatly lowered, and operation is made stable and safe.