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5046 results about "Locknut" patented technology
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A locknut, also known as a lock nut, locking nut, self-locking nut, prevailing torque nut, stiff nut or elastic stop nut, is a nut that resists loosening under vibrations and torque. Elastic stop nuts and prevailing torque nuts are of the particular type where some portion of the nut deforms elastically to provide a locking action. The first type used fiber instead of nylon and was invented in 1931.
External bolt prestress tensioning device suitable for tunnel segment joint
ActiveCN119145877Aavoid damagereduce volumeUnderground chambersHydro energy generationArchitectural engineeringStructural engineering
The invention relates to the field of building structure reinforcement, in particular to an external bolt prestress tensioning device suitable for a tunnel segment joint. Comprising a fixed end mechanism, a tensioning end mechanism, a cambered surface self-adaptive bolt, a prestress bolt and a locking nut, the fixed end mechanism and the tensioning end mechanism each comprise a horizontal supporting plate, and the bottoms of the ends, away from each other, of the two horizontal supporting plates are fixedly connected with vertical supporting plates correspondingly; a screw rod part of the prestress bolt sequentially penetrates through a through hole in the vertical supporting plate of the fixing end mechanism and a through hole in the vertical supporting plate of the tensioning end mechanism and is provided with a locking nut, the tops of the ends, away from each other, of the two horizontal supporting plates are fixedly connected with lug plates correspondingly, and fixing holes are formed in the two lug plates correspondingly. The device provided by the invention is completely fixed on the surface of the to-be-reinforced structure in a mechanical contact mode, destructive drilling on the structure is not needed, and damage to the interior of the structure is avoided.
Owner:FUJIAN UNIV OF TECH
AR Platform Firearm
An improved AR platform firearm includes modular brass deflectors and brass catches; sleeved takedown and pivot pinholes; a cam latch device for a secure upper / lower receiver connection; a two-piece upper receiver; a taper-fit barrel system; a barrel alignment system using a barrel alignment washer; a charging handle that positively engages with the bolt carrier; a charging handle retention system using a spring detent; a bolt carrier with rear wall to absorb shear force on the gas key or anvil; a leak-proof gas system using a straight gas tube, ferrule and threaded connection with the gas block; a gas block stop notch that mates with a gas block key; a gas block jam nut for holding the gas block in place; an interchangeable gas system; an expansion chamber; a handguard with adjustable weights; a handguard lock-up mechanism; a handguard extender; and a sloped Picatinny rail for extending scope utilization.
Owner:GREENE III CHARLES P
Special clamp device for grinding backing bearing
PendingCN119260595AExtended service lifeAchieve positioningGrinding work supportsShoulder surfaceLocknut
The invention relates to a special clamp device for backing bearing grinding, and relates to the technical field of bearing grinding. Comprising a mandrel, a tensioning sleeve, a locking nut, a pressing ring, a left end cover and a right end cover, a shaft ring is arranged in the middle section of the mandrel, the shaft ring is sleeved with the tensioning sleeve, the left end of the tensioning sleeve is pressed against the left shoulder face of the shaft ring through the locking nut, and the right end of the tensioning sleeve is positioned on the right shoulder face of the shaft ring through a screw by means of the pressing ring. A quick-change connector is arranged at the end of the outer side of the oil inlet hole, pressure oil is connected into the oil inlet hole through the quick-change connector, the pressure oil expands the outer cylindrical face of the tensioning sleeve after entering the oil cavity, and an inner hole of the inner ring of the backing bearing is positioned in the radial direction. A left end cover, a positioning device, a right end cover and a clamping device are arranged at the two ends of the mandrel. The outer cylindrical surface of the tensioning sleeve expands under the action of pressure oil, so that radial positioning of the inner hole of the inner ring of the backing bearing is realized, and the inner ring is clamped; and under the action of the positioning device and the clamping device, the outer ring of the backing bearing is clamped so as to realize precise grinding of the backing bearing.
Owner:SHANGHAI MACHINE TOOL WORK
IV-type gas cylinder hoop and fixing device
PendingCN119267792ASolve the force problemresolve failureVessel mounting detailsContainer filling methodsGas cylinderMechanical engineering
The invention belongs to the technical field of gas cylinder accessories, and particularly relates to an IV-type gas cylinder hoop and a fixing device. The device comprises a gas cylinder bandage, a radial expansion mechanism, a support, a gas cylinder support guide mechanism, a sliding base and a plurality of diameter compensation mechanisms with different thicknesses. The radial expansion mechanism is composed of a radial expansion guider I, a radial expansion compensator, a radial expansion guider II and a bandage locking nut from top to bottom, and the radial expansion compensator is a spring; a sliding groove is formed in the support. The two tail ends of the gas cylinder bandage penetrate through the corresponding sliding grooves through welded studs and are screwed to be installed on the support together with the radial expansion mechanism. The device is easy to assemble, high in efficiency, good in product interchangeability and consistency, and capable of absorbing the swelling amount of the gas cylinder in the diameter direction and the length direction due to the modular and lightweight design.
Owner:FAURECIA (SHANGHAI) HYDROGEN ENERGY INVESTMENT CO LTD
Lead screw pre-stretching mechanism for numerical control machine tool
The lead screw pre-stretching mechanism for the numerical control machine tool comprises a lead screw, a tail end bearing seat is arranged at the end of the lead screw, the tail end bearing seat comprises a tail end bearing sleeve, a plurality of first bearings, a first gasket, a load cell, a load cell gasket, a disc spring and a first outer spacer ring, and the first bearings, the first gasket, the load cell, the load cell gasket, the disc spring and the first outer spacer ring are located in the tail end bearing sleeve. The disc spring, the load cell gasket and the load cell are sequentially arranged on the first outer distance ring in a sleeved mode, the end of the tail end bearing sleeve is bent to form a contact step, the two ends of the disc spring abut against the contact step and the load cell gasket respectively, the end of the lead screw sequentially penetrates through the first outer distance ring, the first gasket and all the first bearings, and the load cell is tightly attached to the first gasket. The first gasket is tightly attached to the first bearing, and the end of the lead screw is exposed out of the tail end bearing seat and provided with a locking nut. The disc spring can well balance the pre-stretching force of the lead screw and the pre-tightening force of the tail end bearing seat, automatic compensation of thermal elongation of the lead screw can also be achieved, and high precision and high stability are provided for a transmission system of a machine tool.
Owner:ZHEJIANG UTE BEARING
Nested locknut wrench with magnetic hold
A nested locknut wrench system includes a first wrench and a second wrench. Each wrench has a base portion having a flat portion including at least one magnet. Each wrench has a first extension portion extending perpendicularly from a first end of the base portion. Each wrench has a first arc-shaped finger extending perpendicularly from the first extension portion and having a first hook member extending radially inward from the first arc-shaped finger. Each wrench has a second extension portion extending perpendicularly from a second end of the base portion opposite the first end. Each wrench has a second arc-shaped finger extending perpendicularly from the second extension portion and having a second hook member extending radially inward from the second arc-shaped finger.
Owner:KLEIN TOOLS INC
Movable joint
The invention relates to the technical field of pipeline movable joint manufacturing, and discloses a movable joint which comprises a first joint, a second joint, a third joint and a fourth joint. A spherical surface is arranged at the end of the second joint, and the spherical surface is used for being matched with the conical sealing surface to form sealing; the locking nut is used for connecting the first connector and the second connector, an internal thread is formed in the inner side wall of the locking nut, and the internal thread is matched with the external thread; the sealing ring is mounted between the first joint and the second joint; through the structural design of the first joint and the second joint, a formed sealing structure is provided with at least two sealing structures after being matched with a sealing ring, the sealing performance of the movable joint can be effectively improved, and even if the first two layers of sealing structures fail, the connection mode of the locking nut can also prevent the movable joint from generating overlarge leakage rate, so that the sealing performance of the movable joint is improved. The movable joint is particularly suitable for high-temperature medium pipelines, and the safety performance of the movable joint is effectively improved.
Owner:CHINA NUCLEAR IND 23 CONSTR +1
Replaceable belleville spring connecting device with self-resetting energy dissipation function
The utility model relates to the technical field of energy dissipation and shock absorption of civil engineering structures, in particular to a replaceable belleville spring connecting device with a self-resetting energy dissipation function, which comprises a plurality of complex belleville spring connecting devices used in a frame swing wall structure, the device comprises a plurality of belleville springs, and gaskets are arranged among the belleville springs; second outer baffles are installed on the left side and the right side of the device, the first baffles and the second baffles on the upper side and the lower side are connected through high-strength bolts, a thrust bottom plate and a hexagonal locking nut are arranged on the right sides of the second baffles, and a single-lug plate is arranged on the left sides of the second baffles. The connecting device has the advantages that the resetting and energy consumption principles of the connecting device are basically the same as those of a common steel strand and a damper, the mounting mode is simpler, the manufacturing cost is lower, and the universality is better; and on the other hand, the connecting device has better replaceability, the damaged belleville spring, the damaged gasket and the damaged rubber pad are detached and replaced, the production cost is reduced, earthquake energy can be dissipated, and resetting of the structure after an earthquake is achieved.
Owner:HENAN UNIV OF ECONOMICS & LAW
Shovel bolt lock can be used variably
The invention relates to a drive bolt lock (2) for locking and unlocking a fixed leaf (14) of a double-leaf door (11), having a lock housing (21) in which a retractable slide (241) for a drive bolt rod (24) and a bolt slide (5) are accommodated, and a slide plate (27) is mounted so as to be linearly displaceable and a lock nut (23) with a nut lever (231) is mounted so as to be rotatable in order to manually unlock the drive bolt lock (2). In order to enable a broad applicability of the espagnolette lock (2), it is provided that the lock housing (21) has at least two installation spaces (81, 82, 83, 84, 85), wherein a motor module for motor-driven unlocking of the espagnolette lock can be installed or retrofitted in a first installation space (81), and a latch slide module (4) can be installed or retrofitted in a second installation space (82).
Owner:ASSA ABLOY SICHERHEITSTECHNIK GMBH
Insulation puncture type circular connector structure
InactiveCN119447840AImproved vibration and shock resistanceImprove wiring efficiencyRelieving strain on wire connectionElectrically conductive connectionsStructural engineeringElectric equipment
The invention relates to the technical field of connectors, and provides an insulating puncture type circular connector structure, which comprises a connecting nut, a jack insulator, a shell, a locking nut, a plurality of jack contact elements, a clamping structure and a cable sealing ring, and is characterized in that the jack insulator is nested in the connecting nut, the jack insulator, the shell and the locking nut are connected in sequence, and the cable sealing ring is arranged in the shell; the clamping structure is arranged in a containing space formed by the shell and the locking nut and used for clamping a wire and a cable, the jack contact piece comprises a terminal connecting part, a bending part and a wire puncturing part which are integrally formed, and the terminal connecting part is of a jack structure. The wiring efficiency and the wiring reliability of the electrical equipment can be improved.
Owner:ELCO TIANJIN ELECTRONICS
Stabilizing apparatus for a recreational vehicle
A support assembly has a cylinder fastened to a frame, the cylinder having an extendable shaft, a foot element comprising a foot plate with a dome having a spherical shape, the dome having a central hole, an adapter element joined to a the shaft, presenting a concave surface downward having a shape of the dome, and a post with a male threaded portion at a lower end, and a key element having a conical shape with a base having a hole along an axis. The key element is under the dome, base downward, with the post passing through the hole in the key element with the key element resting on a lock nut threaded onto the post, such that with the shaft partially extended the foot element is loosely carried by the key element in contact with a lower edge of the hole of the first diameter through the dome.
Owner:GOODALL DARIUS
Sensor Mount Fixing
PendingUS20250137820A1Sheet joiningMeasurement apparatus housingsStructural engineeringMechanical engineering
Described are aspects of sensor mount fixing techniques and apparatuses that are configured to receive, secure, and / or support one or more sensors relative to a support structure of a workpiece. In aspects, a sensor mount fixing includes a body portion configured to mount on a support structure. The body portion includes a sensor mount portion configured to receive a sensor housing through the body portion. A sensor mount fixing may include a locknut retainer configured to retain a first locknut engaged with the sensor housing against rotation during a turning (e.g., a tightening, a loosening) of a second locknut engaged with the sensor housing. A sensor mount fixing may include a clamp portion configured to clamp onto the sensor housing to retain the sensor housing.
Owner:HELLERMANNTYTON CORP
A high voltage connection fitting for power lines
The present invention relates to the technical field of power lines, and specifically to a high-voltage connection hardware for power lines, comprising a limiting base plate and an upper clamping piece, wherein the upper end of the limiting base plate is fixedly connected with a lower clamping piece, and the limiting base plate and the lower clamping piece are an integrated structure. By designing an integrated anti-dropping unit at one end of a screw head component, the anti-dropping gasket is integrated with the screw head component, ensuring a flexible connection with the clamping piece while avoiding the loss of the anti-dropping gasket, which is convenient for assembly; through the design of the screw limiting unit, not only the anti-dropping of the locking nut and the screw after the lower clamping piece and the upper clamping piece are adapted and installed, but also the limiting storage of the locking nut after the upper clamping piece is disassembled further prevents the screw from falling off, and ensures that the screw and the locking nut are connected to the lower clamping piece when the hardware is not in use, thereby improving the stability and safety of the power line connection, and effectively preventing the nut and the screw from loosening and losing.
Owner:SHANDONG LUNENG GUANGDA ELECTRIC POWER EQUIP
Pivoting cursor for frameless glass in a vehicle
Owner:INTEVA PRODUCTS LLC
Transverse moving auxiliary tool for super-long ship
Owner:GUANGXI GUIJIANG SHIPYARD
Blow molding high-pressure inner container with preset metal pipe opening
The utility model relates to the technical field of blowing of high-pressure storage tanks, in particular to a blow molding high-pressure inner container with a preset metal pipe opening. The high-pressure inner container comprises a blow molding inner container and a metal pipe opening installed at an opening of the blow molding inner container. The metal pipe opening comprises a fixing piece coaxially installed on the inner side of the neck portion, an outer clamping hoop installed on the outer side of the neck portion in a sleeving mode and a locking nut connected to the fixing piece through threads. The inner end of the fixing piece is provided with a disc body clamped at the opening of the blow molding inner container, and the outer end of the fixing piece extends out of the blow molding inner container and is provided with an external thread used for installing the locking nut; the lower end of the outer clamping hoop and the disc body jointly form a clamping mechanism for the blow molding inner container, and the upper end of the outer clamping hoop abuts against the lower face of the locking nut. According to the high-pressure inner container, a large fixing piece can be pre-arranged in the blow molding inner container, a metal pipe opening is firmly connected, the sealing performance is good, and the compressive strength is high; and special requirements on the strength of the shoulder part and the neck part of the blow-molded inner container are avoided, so that the material consumption of the plastic inner container is reduced, and the overall weight is reduced.
Owner:王涵琳
Double-acting integrated hydraulic nut and hydraulic nut system
The invention discloses a double-acting integrated hydraulic nut and a hydraulic nut system. The double-acting integrated hydraulic nut comprises a cylinder body, a piston, a cylinder cover, a locking nut, an outer hexagon head bolt and a locking sleeve. A mounting plane attached to a workpiece is arranged at the bottom of the cylinder body, and the piston is arranged in an inner cavity of the cylinder body in an axial sliding mode. The outer hexagonal head bolt sequentially penetrates through the axial through hole of the piston and the bottom of the cylinder body, and the threaded end of the outer hexagonal head bolt is meshed with a workpiece in a threaded mode. The cylinder cover is arranged at the top of the cylinder body; the locking nut is in threaded connection with the piston rod and is in contact with the top surface of the cylinder cover; a pressurizing oil port connected with a hydraulic pump station is formed in the side wall of the cylinder body. The hexagonal head of the outer hexagonal head bolt is sleeved with the locking sleeve which is in driving connection with the electric wrench. Due to the fact that the bearing seat bolts are compact in layout and large in bolt pre-tightening force requirement, the experiment platform can be rapidly mounted and dismounted, and working time and cost are greatly reduced.
Owner:BEIJING BOSI GREAT MACHINERY & TRADE CO LTD
Locking-mode-selectable lock bolt and nut device
A locking-mode-selectable lock bolt and nut device comprises a bolt and a nut, the main fastening nut is arranged on the bolt in a sleeving manner; the fixed locknut is arranged on the bolt in a sleeving manner and is positioned above the main fastening nut; wherein a bolt locking groove is formed in the outer wall of one side of the bolt in the length direction, the section of the bolt locking groove is triangular, an acute angle is formed by two side faces in the bolt locking groove, one side face is arranged in the radial direction of the bolt, and the other side face is an inclined face; mounting through holes are symmetrically formed in two opposite surfaces of the fixed locknut, and a screw hole, a round hole and a square hole are sequentially formed in each mounting through hole from outside to inside; the inner diameter of the round hole is larger than that of the screw hole, and the width of the square hole is smaller than that of the round hole. And the two locking assemblies are respectively inserted into the two mounting through holes of the fixed locknut.
Owner:BAOSTEEL CONSTR
Mechanical locking hydraulic cylinder
InactiveCN119532274Aachieve lockingReduce structural complexityFluid-pressure actuatorsHydraulic motorHydraulic cylinder
The invention provides a mechanical locking hydraulic cylinder which comprises a cylinder barrel assembly, a motor mounting plate, a cylinder barrel, a cylinder bottom, a lead screw rotating seal, a supporting bearing pair, a sealing ring, a lead screw reducing sleeve and a bearing oil cylinder. The piston assembly comprises a piston, a first supporting ring, a piston seal and a compression nut; the guide sleeve assembly comprises a guide sleeve, a guide sleeve seal, a guide sleeve clamping ring, a guide sleeve check ring, a second supporting ring, a piston rod seal and a dustproof ring. The driving locking assembly comprises a hydraulic motor, a fixing pin, a trapezoidal pressing nut, a locking lead screw and a locking nut. The piston rod penetrates through the guide sleeve of the piston assembly to be fixed to the piston, limiting is achieved based on the cylinder barrel and the guide sleeve, an oil inlet and an oil outlet of the hydraulic cylinder supply oil to drive the piston rod to do axial telescopic motion, the hydraulic cylinder is locked at any position without an additional oil source, and the electric cylinder is low in structural complexity, good in reliability and convenient to use. Movement, hovering and locking at any position can be achieved.
Owner:CSSC CHONG QING HYDRAULIC ELECTRONICAL CO LTD
Friction-driven precise pipettor and use method thereof
The invention discloses a friction-driven precise pipettor and a use method thereof. The friction-driven precise pipettor comprises a fixed frame, a pipette and a driving mechanism arranged in the fixed frame, the driving mechanism comprises a disc motor, the disc motor is fixedly connected to the outer wall of one side of the fixing frame, a driving shaft is rotationally connected to the inner wall of one side of the fixing frame, one end of an output shaft of the disc motor penetrates through the fixing frame and is fixedly connected with the driving shaft, and a driving friction wheel is movably connected to the circumferential outer wall of the output shaft of the disc motor; the circumferential outer wall of the output shaft of the disc motor is in threaded connection with a locking nut; a friction wheel frame is slidably connected between the inner walls of the two sides of the fixing frame, and a driven friction wheel is rotationally connected between the inner walls of the two sides of the friction wheel frame. Through the arrangement of a controller, a pressure sensor, a displacement sensor, an actuator and a liquid level sensor, it is ensured that key parameters are controlled in the pipetting process; the compression degree of the compression spring is adjusted in a self-adaptive mode, the radial pre-tightening force is changed, and the stability of the pipettor in long-term operation is achieved.
Owner:SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI +1
Anti-falling overspeed protection device for cargo carrying table of stacking machine
The anti-falling overspeed protection device comprises the cargo carrying table and a guide seat, safety tongs are arranged on the cargo carrying table, the safety tongs are connected with a safety tongs connecting plate, and the safety tongs connecting plate is fixedly connected with a connecting rod and an overspeed connecting rod; the overspeed connecting rod is fixedly connected with the middle of the safety gear connecting plate, one end of the overspeed connecting rod is hinged to the cargo carrying table mounting plate, and the other end of the overspeed connecting rod is fixed to the overspeed protection steel wire rope. The upper end of the compression rod penetrates through the supporting spring and is fixed at the lower end of the guide seat through a locking nut; a guide rod is further fixed to the lower end of the guide seat through a nut, the guide rod penetrates through the spring support and the compression spring, a pulley shaft penetrates through the upper end of the guide seat, and the pulley shaft further penetrates through the pulley and the pulley bearing and is fixed to the pulley mounting plate through an end cover. The safety protection device is used for safety protection when rope breaking, rope loosening or stalling and overspeed happen to the cargo carrying table of the stacking machine.
Owner:YUNNAN KSEC INTELLIGENT EQUIP
Friction and wear testing device for high-temperature and high-pressure fluid lubrication rotating plane
ActiveCN119509970AWith self-locking functionsmall sizeMachine part testingUsing mechanical meansWear testingUniversal joint
The invention discloses a high-temperature and high-pressure fluid lubrication rotating plane frictional wear testing device, and belongs to the technical field of extreme working condition tribology testing. The device is characterized in that a lifting device and a loading cylinder are simultaneously fixed at the top of a test stand bracket, a piston rod of the loading cylinder is connected with a tension sensor and a water-cooling loading shaft, and the water-cooling loading shaft is connected with a lower sample piece (static ring) in a high-temperature and high-pressure test cavity through a spherical universal joint; the oil-cooling main shaft is fixedly connected with an upper sample piece (moving ring) in the high-temperature and high-pressure test cavity through a locking nut, so that the axial load of the water-cooling loading shaft and the oil-cooling main shaft in a non-concentric state can be uniformly loaded, and the end surfaces of the upper sample piece and the lower sample piece can be automatically attached to each other. The upper part of the high-temperature and high-pressure test cavity is connected with the water-cooling jacket, and the lower part is connected with the bearing cavity. High pressure of the test chamber is guaranteed by a high-pressure water station system, and high temperature is adjusted and controlled by an electric heater and a water cooling jacket. The device can realize the rotary sliding friction wear test of a friction pair in a high-temperature and high-pressure water environment.
Owner:DALIAN UNIV OF TECH
Inner clamping ring enclasping type locknut
The utility model discloses an inner clamping ring clasping type locknut which comprises a nut body, an inner thread groove is formed in the inner wall of the nut body, two groups of anti-loosening clasping assemblies are arranged in the nut body, and the number of the anti-loosening clasping assemblies is larger than the number of the anti-loosening clasping assemblies. The anti-loosening enclasping assembly comprises an arc-shaped mounting groove, a compression spring, an annular limiting block, an arc-shaped limiting groove, a screw rod, a cup head, threaded holes, an inner hexagonal limiting groove and a slope groove, and the threaded holes are formed in the left side and the right side of the outer surface of the upper end of the nut. According to the inner clamping ring enclasping type locknut, through the arrangement of the annular limiting block and the compression spring, one end of the annular limiting block can be conveniently clamped in the groove edge of the outer wall of the screw after the nut and the external screw are installed, the nut is prevented from loosening and falling off, stability is improved, and the nut can be tightly clamped by rotating the screw. And one end of the annular limiting block can be driven to be separated from the groove edge of the outer wall of the screw, so that the nut is convenient to disassemble.
Owner:SHENYANG JINYI FASTENER TECH DEV CO LTD
Low opening and closing pressure difference safety valve for ultrahigh-temperature high-flow fuel steam medium for spaceflight
PendingCN119267609AExhaust fastincrease exhaust flowOperating means/releasing devices for valvesEqualizing valvesPressure differenceSafety valve
The invention discloses a low opening and closing pressure difference safety valve for ultrahigh-temperature large-flow fuel oil steam media for spaceflight, which comprises a shell, an inlet pipe nozzle, an inlet locking nut, a large-flow valve core, a low-rigidity spring, a spring seat, a locking nut and an adjusting nut are arranged in the shell from front to back, and a flexible graphite sealing ring is embedded at the tail end of the inlet pipe nozzle. The large-flow valve element slides in the shell in the axial direction, and the front end of the large-flow valve element is designed to be an arc-shaped conical surface matched with an arc chamfer. The two ends of the spring abut against the spring seat and the tail of the large-flow valve element respectively, a safety valve exhaust hole is formed in the front end of the shell, and the safety valve exhaust hole is communicated with an inlet of the inlet pipe nozzle when the large-flow valve element is in a retreating state. The pressure relief function of a 380 DEG C ultra-high-temperature fuel oil steam medium can be achieved, the ultralow opening and closing pressure difference of 0.005 MPa under the dynamic and static environments is achieved, and the exhaust stability is guaranteed under the vibration and impact environments.
Owner:SHENYANG AEROSPACE XINGUANG GRP
Buffering overflow valve
The invention relates to the technical field of hydraulic valves, and discloses a buffer overflow valve which comprises a shell, a first sealing ring is arranged on the surface of the shell, a connecting block is fixedly connected to the right end of the shell, an adjusting assembly is arranged in the connecting block, and a storage assembly is fixedly connected to the side, close to the shell, of the adjusting assembly. A moving assembly is arranged in the storage assembly, a spring is arranged between the storage assembly and the moving assembly, the adjusting assembly comprises a threaded rod, the surface of the threaded rod is in threaded connection with a connecting block, and the surface of the threaded rod is in threaded connection with a locking nut. A closed cavity is formed between a connecting column and a fixing seat, a second sealing ring is used for sealing, a valve element and an oil way in the connecting column are communicated with the closed cavity, the cavity is filled with oil, and when the oil on the left side of the valve element rises, due to the existence of the oil in the closed cavity, the valve element cannot instantly leave a valve seat at the bottom of a valve block; therefore, the buffer overflow valve can be opened at low pressure, and pressure impact cannot be generated.
Owner:YUTAI HYDRAULIC TECH (SHANGHAI) CO LTD
External control direct-acting overflow valve
The utility model discloses an external control direct-acting overflow valve which comprises an overflow valve body, and the overflow valve body comprises a valve body, a main valve element, a valve sleeve, a spring seat, a main spring, a nut, an adjusting screw rod and a locking nut. One end of the valve sleeve is in threaded connection with the valve body, the other end of the valve sleeve is in threaded connection with the nut and the locking nut, the main valve element is arranged in the valve body, an oil inlet and an oil return opening are formed in the end portion and the side portion of the valve body, the adjusting screw rod is arranged in the nut and extends outwards, and a main spring cavity is formed between the valve body and the adjusting screw rod. One end of the main spring is pressed on the main valve core through the spring seat, and the other end is pressed on the adjusting screw rod; an external control opening is formed in the joint of the valve sleeve and the valve body and communicates the exterior of the overflow valve body with the main spring cavity. High-pressure oil enters an overflow valve spring cavity through an external control structure, high-pressure pressure acts on the main valve element to enable the overflow valve to be normally closed, meanwhile, the anti-pollution capacity of the overflow valve is improved through a single-stage main valve element structure, and the action requirement of an automobile crane supporting leg system is met.
Owner:XUZHOU HEAVY MASCH CO LTD
Drawing instrument capable of monitoring displacement of anchor rod in real time
The utility model discloses a drawing instrument capable of monitoring the displacement amount of an anchor rod in real time, which comprises a counter-force gasket, a sleeve, a tension oil cylinder, a steel wire type spring displacement meter and a connecting rod, the counter-force gasket, the sleeve and the tension oil cylinder are sequentially arranged in a contact mode, one end of the connecting rod penetrates through the tension oil cylinder and the sleeve and then is in threaded connection with the exposed end of the anchor rod, and the other end of the connecting rod is in threaded connection with the steel wire type spring displacement meter. The other end penetrates through the tension oil cylinder and then is in threaded connection with a locking nut; the steel wire type spring displacement meter is arranged on the counter-force gasket and the tension oil cylinder and is fixed through elastic force of the steel wire type spring displacement meter. The drawing instrument provided by the utility model can measure and record the displacement of the anchor rod in real time in the drawing process of the anchor rod, simultaneously generates an anchor rod displacement-time whole-process curve, observes the displacement change trend of the anchor rod, and can export data in the later period, so that engineers can comprehensively evaluate the performance of the anchor rod.
Owner:INNER MONGOLIA SHUANGXIN COAL MINE CO LTD +1
Lead screw supporting structure
The utility model provides a lead screw supporting structure which comprises a ball screw and a tail end seat, the tail end seat is provided with a through installation hole, one end of the ball screw is installed in the installation hole through a bearing, a limiting ring is arranged on the ball screw on the axial outer side of the bearing in a sleeved mode, and the limiting ring is arranged on the tail end seat. A locking nut is mounted on the lead screw on the axial outer side of the limiting ring; the ball screw on the axial inner side of the bearing is sleeved with a spacer ring, and a compressed elastic piece is arranged between the axial inner side of the spacer ring and the tail end base. The installation mode of the tail end of the ball screw is changed into a supporting mode from a fixing mode, continuous axial supporting force is provided for the tail end of the ball screw through the action of the elastic piece and the distance ring, axial movement of the ball screw is restrained, and the displacement precision of the ball screw is improved.
Owner:NANJING TENGYANG MACHINERY CO LTD
Stress-free supporting and unloading device for ground adjustment of reflecting surface
The invention provides an unstressed supporting and unloading device for ground adjustment of a reflecting surface. The unstressed supporting and unloading device comprises movable trundles, a bottom frame, an adapter plate and an adjustable supporting assembly. The plurality of adapter plates are mounted on the underframe; the adjustable supporting assembly is fixedly connected with the adapter plate, and the top end of the adjustable supporting assembly is used for being connected with an external reflecting surface. The adjustable supporting assembly comprises a rigid supporting bracket, a spherical hinge joint, an upper sleeve, a lower sleeve, a fixed support and a height adjusting structure. The height adjusting structure comprises an upper fixing nut, an upper locking nut, an adjustable supporting screw rod, a lower locking nut, a lower fixing nut, a height adjusting handle and a locking handle; a height adjusting handle is mounted on the adjustable supporting screw rod; locking handles are mounted on the upper locking nut and the lower locking nut; one set of device can penetrate through the reflecting surface assembling technological process, parking, loading, transporting and adjusting of the reflecting surface are met, one-stop assembling is achieved, and the assembling efficiency is improved.
Owner:SHANGHAI INST OF SATELLITE EQUIP
Anti-loosening double-nut pressing type quick coupler
The utility model discloses an anti-loosening double-nut pressing type quick coupler, and relates to the technical field of sealing couplings. Comprising a connector body, and a continuous fifth threaded section is arranged on the outer wall of the connector body; the locknut set comprises a fastening nut and a locking nut, a fixed section is formed at one end of the fastening nut, a continuous first threaded section matched with the fifth threaded section is arranged on the inner wall of the fastening nut and the inner wall of the fixed section, a second threaded section is arranged on the outer diameter of the fixed section, a locking section is formed at one end of the locking nut, and the locking section is matched with the second threaded section. A third threaded section matched with the second threaded section is arranged on the inner wall of the locking section, and a fourth threaded section matched with the fifth threaded section is arranged on the inner wall of the locking nut; the fastening nut and the locking nut are in threaded connection through the second threaded section and the third threaded section, and the locking nut is in threaded connection with the fifth threaded section on the connector body through the fourth threaded section. The fastening nut and the locking nut are fixed in a detachable connection mode.
Owner:BEIJING BOLANG YUANTONG INFORMATION TECH