33results about How to "Play the role of self-locking" patented technology

The invention provides an aviation hydraulic elevator, which comprises a bottom machine frame, the top of the bottom machine frame is supported by a scissor fork lift mechanism and provided with a topoperating platform; the scissor fork lift mechanism is provided with a hydraulic cylinder assembly for jacking the top operating platform; a cylinder mechanical lock mechanism for self-locking the hydraulic cylinder assembly is installed on the hydraulic cylinder assembly; the hydraulic cylinder assembly is connected with a hand pump structure and provides hydraulic power to drive the jacking action of the hydraulic cylinder assembly. The lift cylinder structure of the elevator adopts pure mechanical locking device; when an oil pipe suddenly bursts or the cylinder bottom suddenly falls off, the piston rod can be mechanically locked to avoid a sudden fall of the platform and cause a safety accident.

The invention discloses an adhesive cleaner. According to the adhesive cleaner, a pair of rollable linear motors with an adsorption function are attached to parallel window frames; a cross beam is connected between linear rotors of the pair of rollable linear motors, and is connected with an inner cleaning head capable of reciprocating along the cross beam; a strong magnet is arranged at the center of the inner cleaning head, the arrangement of the strong magnet aims at providing magnetic force to an outer cleaning head on the other side of glass, so that the outer cleaning head and the inner cleaning head can move synchronously to clean the outer glass surface; and the cross beam and the cleaner are driven by the motors. Glass cleaning can be automatically completed by utilizing longitudinal and transverse movement of inner and outer cleaning heads on the glass surface, burden of workers can be reduced, and the safety problem is not worried.

The invention relates to the technical field of building decoration and discloses an installation structure. The installation structure comprises a transmission piece, a transmission rod and a sectionbar, wherein the transmission piece is a conversion rod or a locking rod or an angle driver, the transmission rod is arranged in a groove of the section bar, the transmission piece is installed in the groove of the section bar through a clamping assembly, the clamping assembly comprises a base, a rotating piece and an elastic piece, and the base is provided with an accommodating groove and a first boss; the rotating piece is arranged in the accommodating groove and is rotatably connected with the base, the rotating piece comprises a clamping sheet, and when the rotating piece rotates, the twoends of the clamping sheet can extend out of the accommodating groove to be clamped with the groove of the section bar, one end of the elastic piece along the length direction of the elastic piece isarranged on the first boss, and the other end of the elastic piece can abut against the side surface of the clamping sheet so as to limit the rotation of the clamping sheet. The installation structure is convenient to operate, simple in structure, high in installation efficiency, stable in structure, free of slot punching and accurate calculation of the length of the transmission rod, and large in error allowable range.

The invention provides a lifting stand column with a small installation distance. The lifting stand column comprises a driving device, a lifting pipe and a transmission assembly. The lifting pipe comprises a first pipe, a second pipe, a third pipe, a fourth pipe and a fifth pipe. The lower end of the fifth pipe is fixed to the driving device. The transmission assembly comprises a first screw rod,a second screw rod, a third screw rod and a fourth screw rod. The output end of the driving device is in transmission fit with the first screw rod and can drive the first screw rod to rotate. The lower end of the second screw rod is provided with a first nut in threaded transmission connection with the first screw rod. The lower end of the third screw rod is provided with a second nut in threadedtransmission connection with the second screw rod. The lower end of the fourth screw rod is provided with a third nut in threaded transmission connection with the third screw rod. The lower end of thefirst pipe is provided with a fourth nut in threaded transmission connection with the fourth screw rod. The adjacent screw rods are in threaded transmission connection, in addition, each nut is located between the corresponding two adjacent screw rods, the transmission assembly can be more compact in the axial direction and the radial direction, and the small installation distance and the large stroke of the lifting stand column are achieved.

The invention discloses an adjustable building crane, comprising a base. The left upper end of the base is provided with a cab; the right upper end of the base is provided with a rotating mechanism; the output end of the rotating mechanism is provided with a support column; the right upper end of the support column is provided with a suspender; a guide wheel is arranged at the tail end of the suspender; a lifting rope is arranged on the guide wheel in a winding manner; the left end of the lifting rope is fixedly connected with a hoist; a hook is arranged at the lower end of the lifting rope; and the tail end of the bending hook of the hook is connected with a self-locking rod by a reset hinge. The adjustable building crane has a simple and reasonable structure; when a heavy object is hungon the hook, a traction rope is subjected to a pressing force, and then the self-locking rod is driven to rotate towards the inner side of the hook so as to play the self-locking action; a camera is arranged on the suspender above the hook; the action of the camera is to observe the situation below the lifting, so that an operator can grasp the surrounding sight clearly and conveniently; the safety of the device is improved; the switching between the carrying mode and the fixing mode of the device is realized; and the practicability of the device is greatly improved.

A small ditching and fertilization integrated machine for tea trees comprises a chassis, a cutter lifting mechanism, a cutter excavation mechanism, a diesel engine, a speed reducer, a fertilization blanking mechanism and a handheld thrust mechanism, wherein the cutter lifting mechanism is mounted in front of the chassis through nuts and bolts, the cutter excavation mechanism is fixed on the cutterlifting mechanism through two bearing blocks, the fertilization blanking mechanism is fixed in the middle of the rack chassis through a support formed by welding square steel and steel plates, the small diesel engine and the speed reducer are mounted on the mechanism chassis through bolts and nuts, the handheld thrust mechanism is fixed at the tail of the chassis through bolts and nuts, and the handheld thrust mechanism is connected with the cutter lifting mechanism through welding steel tubes. The machine is small in size and compact in structure, can enter a tea garden to work, can reduce the working intensity of tea growers to a certain extent and is applicable to ditching and fertilization operation for tea garden planting in mountain and hill regions.

The invention relates to a switch cabinet and a valve driving mechanism with a self-locking function thereof. The valve driving mechanism comprises a mounting frame and a connecting plate rotationallymounted on the mounting frame; the valve driving mechanism further comprises a spring bolt which is movably assembled on the mounting frame, wherein the guiding direction of the spring bolt is parallel to the rotating axis of the connecting plate. A lock hole structure is arranged on the connecting plate, and the spring bolt is provided with a locking position connected with the lock hole structure in an inserted mode and an unlocking position separated from the lock hole structure in the moving stroke of the spring bolt, wherein a reset spring is arranged between the spring bolt and the mounting frame, and the spring bolt is provided with a pushing part used for being pushed by a corresponding unlocking push rod to overcome an acting force of a reset spring to move towards the unlockingposition. During use, the unlocking push rod pushes the spring bolt, so that the spring bolt moves to the unlocking position along the guide direction of the mounting frame; at the moment, the springbolt unlocks the connecting plate, the connecting plate can rotate to drive a valve to be opened, the unlocking push rod to move reversely and the valve to be closed; meanwhile, the spring bolt is guided to move to the locking position under the action of the reset spring, the connecting plate is locked and cannot rotate at the moment, and the valve self-locking effect is achieved.

An intelligent low-voltage meter box comprises a box body. The box body comprises a box door, supporting plates and a bottom plate, wherein the supporting plates are positioned on two sides of the box door, and the bottom plate is arranged perpendicular to the supporting plates. Each of the supporting plates on two sides is provided with an arc slide way, a left pulley is arranged in the left arc slide way, a right pulley is arranged in the right arc slide way, the left pulley is connected with the right pulley through a round rod, the round rod is fixedly connected with a movable top cover and is further fixedly connected with a transmission rod, the left end of the transmission rod is hinged with a left connecting rod while the right end of the transmission rod is hinged with the right connecting rod, the left connecting rod and the right connecting rod are hinged with the supporting plates, a sound-absorbing material layer is arranged on the inner side of the box body and is a three-dimensional mesh structure system, and the length-diameter ratio of the mesh ranges from 20-30. By the technical scheme, after sound-absorbing materials are attached on the surface of the box body, noise is reduced greatly while the intelligent low-voltage meter box is good in use environment.

The invention relates to a molding sand for casting elevator traction wheels and a molding device thereof. The molding sand includes a three-layer structure, which is divided into a fine sand layer, a medium sand layer and a coarse sand layer. The fine sand layer is the innermost layer. The middle sand layer is the outer layer of the fine sand layer, the coarse sand layer is the outer layer of the middle sand layer, the fine sand layer is a sand layer made of sand with a fineness modulus less than 2.2, and the middle sand layer is composed of A sand layer composed of sand with a fineness modulus between 2.3 and 3.0, the coarse sand is a sand layer composed of sand with a fineness modulus between 3.1 and 3.7, and the thickness of the fine sand layer is 30 to 50mm between. On the premise of ensuring the surface quality of the casting, the molding sand greatly reduces the manufacturing cost of the molding sand, and at the same time, the stability of the molding sand after molding is improved, and it is not easy to be damaged and deformed.

The invention discloses a multiple anti-theft bluetooth office lock, which comprises a motor fixed on a table, a control circuit for driving the motor to run, and a drive block fixed on a drawer, the opposite sides of the drive block are respectively fixedly connected with connecting rods , one end of the connecting rod is fixed to the drive block, the other end is fixed to the inner wall of the drawer, a threaded hole is provided in the middle of the drive block, a screw is coaxially fixed on the rotating shaft of the motor, and the screw passes through the screw thread The hole is set to match the internal thread of the threaded hole, and the drawer is driven to move back and forth along the length direction of the screw rod when the motor rotates. The multiple anti-theft bluetooth office lock of the present invention can effectively lock and open the drawer through the setting of the control circuit, motor, drive block, screw rod and threaded hole, avoiding the problem that can be achieved by destroying the lock cylinder in the prior art. And the problem of prying open the drawer.

The invention relates to a switch cabinet and a shutter driving mechanism with self-locking function. The shutter driving mechanism comprises a mounting frame and a connecting plate rotatably mounted on the mounting frame. The shutter driving mechanism also includes a guide direction parallel to the rotation axis of the connecting plate. The lock tongue assembled on the mounting frame is moved, and the connecting plate is provided with a lock hole structure. The lock tongue has a locking position that is inserted into the lock hole structure and an unlocking position that is separated from the lock hole structure on its moving stroke. A reset spring is arranged between the mounting brackets, and the lock tongue has a push portion for pushing the corresponding unlocking push rod to move to the unlocking position against the force of the reset spring. During use, the unlocking push rod pushes the lock tongue to make the lock tongue move to the unlocking position along the guide of the mounting frame. At this time, the lock tongue unlocks the connecting plate, and the connecting plate can be rotated to drive the shutter to open, and the unlocking push rod moves in the reverse direction. The shutter is closed, and the lock tongue is guided and moved to the locking position under the action of the return spring. At this time, the connecting plate is locked and cannot be rotated, which plays the role of self-locking of the shutter.

The invention discloses a movable lifter. The movable lifter comprises a base; a double-mast hydraulic column is arranged on the base, and is provided with a lifting platform; a fence is arranged on the lifting platform; the base is provided with a power assembly for controlling lifting of the double-mast hydraulic column; baffle plates are arranged at four corners of the lifting platform, and areprovided with two support columns horizontally extending outwards; support legs are arranged between the two support columns; one ends of the support legs are hinged to the base, and projections arearranged at the other ends on the two sides of the support legs; the projections are pressed on the support columns; two rotating columns are arranged on the two sides of the base; and each rotating column is rotationally connected with one pressing bar. When the support legs are gathered, the projections on the two sides of the support legs are pressed on the support columns to achieve a self-locking effect, so that hoisting of the lifting platform is prevented when the support legs are not used for supporting, the safety is improved, the overall functions are perfected, and the practicability is high.

The invention discloses a centrifugal supplementary oil supply device and method based on micropore oil supply. The device is suitable for space long-life rolling bearings. The device includes: an oil reservoir; a pair of wedge-shaped delay rings, and each wedge-shaped delay ring It is arranged around the outer surface of the oil reservoir and its outer side is the outer spacer ring of the bearing assembly. There is an oil storage chamber between the two wedge-shaped delay rings. There are several oil supply micro-holes on the outer wall of the oil reservoir at the oil storage chamber, so that The oil in the oil reservoir enters the oil storage cavity from the oil supply micropore, and then is supplied to the bearing assembly through the wedge-shaped delay ring. When the oil in the oil reservoir is large, the oil is stored in the oil storage cavity, and The oil is supplied to the bearing assembly through the wedge-shaped delay ring; when the oil in the oil reservoir is low, the oil stored in the oil storage chamber supplies oil to the wedge-shaped delay ring, and then supplies oil to the bearing assembly. It adopts the micropore oil supply method to control the oil flow rate to stabilize the speed control effect. The wedge-shaped delay ring and the oil storage chamber make the supplementary oil supply rate basically consistent throughout the life cycle.

The invention discloses a three-chamber automatic clamping and locking mechanism, which comprises an upper cover body, wherein the upper cover body is provided with a clamping oil cylinder which is connected with a hydraulic control device, a clamping piston matched with the clamping oil cylinder is connected with a clamping piston rod, the lower end of the clamping piston rod is connected with aplaten, and the upper end of the clamping piston rod extends into an inner chamber of a locking oil cylinder which is positioned above the upper cover body and is arranged perpendicular to the clamping oil cylinder; a locking piston arranged inside the locking oil cylinder is provided with an inclined surface which is matched with an inclined surface at the upper end of the clamping piston rod; and a right chamber positioned on the right side of the locking piston inside the locking oil cylinder is communicated with a lower chamber below the clamping piston inside the clamping oil cylinder through a hydraulic oil passage on the clamping piston rod. When the mechanism works, the clamping piston rod compacts a workpiece downward through the platen, the inclined surface at the locking pistonabove the clamping piston rod plays a role of compacting the upper end of the clamping piston rod at this time, and the mechanism plays a role in self-locking for the compaction of the workpiece, ensures that the clamped workpiece is firm and does not loosen, and has a simple integral structure, and flexible and reliable action.

The invention relates to a near-ultraviolet source adjustment mechanism for a solar simulator, which includes an adapter ring, a body, a condenser lens, an adjustment cylinder, an inner focusing cylinder, an insulating sleeve and a lamp holder, and the adapter ring is sleeved on one side of the body. The condenser is fixedly connected to the adapter ring, the adjusting cylinder is connected to the other side of the body by rotation, the inner focusing cylinder is plugged into the body, the insulating sleeve is plugged into the focusing inner cylinder, and the lamp holder is plugged into the insulating sleeve, among which , there are four adjusting screws threaded on the insulating sleeve, the axis directions of the adjacent adjusting screws are vertical to each other and one end is in contact with the lamp holder, the other end of the adjusting screw passes through the focusing inner barrel and extends out of the body; the focusing inner There are several guide columns fixedly connected to the outer wall of the cylinder, and several guide grooves are opened on the adjustment cylinder. The guide columns pass through the body and extend into the guide grooves, so that the guide columns and the adjustment cylinder are slidably connected. The advantages of adjusting the position of the xenon lamp axis, horizontal direction, and vertical direction are unchanged.

The invention discloses a liquid shading dice box, which comprises a transparent cover body, a supporting base connected with the lower portion of the cover body and a control box detachably connected with the upper end of the cover body. The cover body comprises an outer cover body and an inner cover body located in the outer cover body, wherein the outer cover body comprises an outer cylinder body and an outer upper plate connected with the upper end of the outer cylinder body, the inner cover body comprises an inner cylinder body located in the outer cylinder body and an inner upper plate connected with the upper end of the inner cylinder body and located below the outer upper plate, and a certain gap exists between the inner cover body and the outer cover body to form a containing cavity. The lower ends of the inner barrel and the outer barrel are connected with a liquid sealing mechanism for sealing the lower end opening part of the accommodating cavity, and shading liquid is stored in the accommodating cavity; and a first control mechanism for pumping out liquid in the accommodating cavity and injecting the liquid into the accommodating cavity is mounted in the mounting box. The dice is placed in the cover body, so that the dice cannot be dirtied and polluted, cannot be stuck, is easy to roll over and cannot be lost; when the first control mechanism draws away the liquid in the containing cavity, people can see the counting condition of the dice in the cover body.

The present invention provides an AGV lifting system and a lifting AGV. The lifting system includes a driving device, a gear set, a threaded connecting rod and a scissor lift frame. The driving device is connected to the threaded connecting rod through the gear set. The threaded connecting rod includes a connecting rod part and a threaded part. One end of the threaded part is connected to the gear set, and the other end is vertically connected to the connecting rod part. Both ends of the connecting rod part are connected to the bottom of the scissor lift frame. When the lifting system is retracted, it is located inside the AGV trolley, reducing the overall height of the AGV trolley and adapting to more applications; the design of gears and connecting rods is simple and compact in structure. The scissor support frame is composed of connecting rods. The mechanical processing is simple and the cost is low. At the same time, the driving system of the scissor support frame is simple and easy to control; the mechanical limit device can prevent the motor from failing, so that the scissor support frame can still maintain the supporting state, ensuring that the AGV vehicle The safety of the body's operation process and the normal operation of the organization.

The invention discloses a circuit breaker having a self-locking function. The circuit breaker comprises an upper housing, a lower housing, a self-locking electromagnetic coil, and a self-locking elastic rubber sheet. The upper housing and the lower housing are connected together by a buckle, and the middle part of the upper housing is connected with a starting switch in a penetrating way. The upper side and the lower side of the upper housing are respectively provided with a wire inlet groove and a wire outlet groove, the inner sides of which are provided with wire guiding holes. The upper side and the lower side of the inner cavity of the lower housing are respectively provided with an input end contact sheet and an output end contact sheet, and a connecting sheet is disposed between the input end contact sheet and the output end contact sheet. The circuit breaker having the self-locking function is advantageous in that the structure is simple, and a circuit-breaking and self-locking function is effectively realized, and therefore the own safety of the circuit breaker and safety of electrical devices are guaranteed.

The invention provides a downhole drilling tool and an anti-loosening self-locking structure thereof. The anti-loosening self-locking structure of the downhole drilling tool comprises a mandrel of a downhole drilling tool, the mandrel is connected with a casing of the downhole drilling tool in a pivotable manner via a bearing and a bearing seat, the bearing seat is connected with the casing via a first screw thread pair, the lower end of the mandrel is connected with the upper end of a driving shaft barrel of the downhole drilling tool via a second screw thread pair, and the lower end of the driving shaft barrel is connected with a drill via a third screw thread pair. During working, the threaded connections between the bearing seat and the casing, between the mandrel and the driving shaft barrel and between the driving shaft barrel and the drill become tighter and tighter by screwing along with rotation of the mandrel, so that self-locking function is realized, and loosening accidents can be effectively avoided. In addition, the downhole drilling tool and the anti-loosening self-locking structure thereof are simple in structure and low in cost.