CN206336958U - A kind of self-positioning lowering or hoisting gear - Google Patents

Abstract

The utility model is related to lowering or hoisting gear technical field, refers specifically to a kind of self-positioning lowering or hoisting gear；Including frame, it is fixedly connected between the top board and base plate of frame by some vertical rods, it is vertical between the top board and base plate to be equipped with central shaft, the clutch lowering or hoisting gear that base plate is moved up and down provided with driving central shaft；The upper, middle and lower portion of the central shaft is sequentially provided with sub- wheel assembly, drive gear female wheel component, female wheel component includes bus wheel and cylinder mother's axle, cylinder mother's axle is movably arranged between bus wheel and central shaft, bus wheel is respectively arranged at two ends with platen and lower tray, upper platen is connected by the vertical rod of spring bearing and surrounding, and lower tray is fixedly connected with cylinder mother's axle；The utility model is rational in infrastructure, and the lift adjustment and arbitrary height that mosquito net and veiling support can be achieved are parked, facilitates user's flexibly using to mosquito net, improves disassembly, cleaning convenience and safety in utilization, terminal with compact integral structure is stable, have a wide range of application.

Description

A kind of self-positioning lowering or hoisting gear

Technical field

The utility model is related to lowering or hoisting gear technical field, refers specifically to a kind of self-positioning lowering or hoisting gear.

Background technology

Mosquito net is that we spend the common articles for use of hot summer, and it can effectively prevent biting for mosquito.Relative to killing Worm agent and mosquito-repellent incense, the use of mosquito net have the advantages that environmental protection, health and safety, low-carbon low cost.Exist on the market various The mosquito net of type, such as traditional mosquito net, it uses Corner Strapped point hang, and for example the mosquito net of mobile edition, and it is by can Folding frame is supported, and both mosquito nets have respective advantage and disadvantage, simple in construction but operation inconvenience in use.To have Effect improves the Discussing Convenience of Usage of bednets, the elevating mechanism operation of various mosquito nets and given birth to, and is very easy to mosquito net in daily Use, such as publication number CN104444885A Chinese invention patent, it discloses a kind of balance lifting device, including support, Gu Due to the fixing axle on support, the fixing axle top is provided with drive mechanism, and fixing axle bottom is provided with line wheel component, the driving Clutch is provided between mechanism and line wheel component, the line wheel component includes some twisted rope disks, the twisted rope disk and clutch Overload separation mechanism is provided between structure, it can effectively realize mosquito net balance lifting, the function such as parked, automatic adjustable balance.But The problem of prior art still can not solve mosquito net integral elevating, so that the repetition of inconvenient mosquito net, veiling in daily cleaning Problem is removed and installed, therefore, prior art has yet to be improved and developed.

The content of the invention

The purpose of this utility model be for prior art defect and not enough there is provided a kind of compact conformation, operation side Just can effectively realize the balance lifting of mosquito-net body, parked, automatic adjustable balance can realize that mosquito net, veiling integrally rise again The appropriate height smoothly touched is dropped to, greatly facilitates cleaning and the self-positioning lowering or hoisting gear installed.

To achieve these goals, the utility model uses following technical scheme：

A kind of self-positioning lowering or hoisting gear described in the utility model, including frame, the frame include top board and base plate, top It is fixedly connected between plate and base plate by some vertical rods；Vertical be equipped with central shaft, base plate sets between the top board and base plate There is the clutch lowering or hoisting gear that driving central shaft is moved up and down；The upper, middle and lower portion of the central shaft is sequentially provided with sub- wheel assembly, driving Gear female wheel component, female wheel component includes bus wheel and cylinder mother's axle, and cylinder mother's axle is movably arranged in bus Lun He centers Between axle, bus wheel is respectively arranged at two ends with platen and lower tray, and upper platen connected by the vertical rod of spring bearing and surrounding, Lower tray is fixedly connected with cylinder mother's axle；The base plate is provided with one-way locking device, and one-way locking device includes clutch discs, from Closing disk can be connected in the vertical rod of its surrounding up and downly, and some support springs, clutch discs are provided between clutch discs and base plate Provided with the second unilateral bearing being connected with cylinder mother's axle lower end；The first fixing axle is provided between the sub- wheel assembly and top board Hold, be connected with the first unilateral bearing between drive gear and central shaft, drive gear provided with respectively with sub- wheel assembly, upper platen The transmission component of cooperation.

According to above scheme, the upper platen is provided with through hole, and the upper end of cylinder mother's axle is rotationally arranged in platen Through hole in, and be connected with driving key between the through hole of cylinder mother's axle and upper platen.

According to above scheme, the central shaft is provided with the stroke reed coordinated with clutch discs, and stroke reed is fixedly arranged on drive Between moving gear and cylinder mother's axle upper surface, and stroke reed coordinates with cylinder mother's axle in clutch transmission.

According to above scheme, silica gel friction is equipped between upper platen and the bus wheel, between lower tray and bus wheel Piece.

According to above scheme, the clutch lowering or hoisting gear includes being oriented to ring gear and gearshift cross bar, is oriented to ring gear and is located at base plate Lower section and be secured to connection；The central shaft lower end penetrates rotatably base plate in guiding ring gear, and under central shaft End is fixedly connected with gearshift cross bar；Positioning stage clip, and positioning compression spring sleeve are connected between the cylinder mother's axle lower surface and base plate Dress is on center shaft；The gearshift cross bar transverse strands located at being oriented on ring gear, and gearshift cross bar when horizontally rotating along being oriented to ring gear Upper and lower displacement.

According to above scheme, the lower port of the guiding ring gear is provided with two groups of end to end pressure fluctuating orbits, by force Fluctuating orbit processed includes the low level working face, high-order working face and middle position working face set gradually, and low level working face, high-order work Make to be respectively connected with smooth transition surface between face and middle position working face；The two ends of the gearshift cross bar are arranged in corresponding pressure respectively In fluctuating orbit, along pressure fluctuating orbit upper and lower displacement when gearshift cross bar horizontally rotates.

According to above scheme, the transmission component includes some driving levers set along same circumference equi-angularly space, some groups Bar is arranged on drive gear vertically, and one-way driving mechanism is provided between driving lever lower end and upper platen, and upper end and the son of driving lever are taken turns Component coordinates drive connection.

According to above scheme, the one-way driving mechanism includes female basin transmission tip and mainshaft gear linkage basin, female basin transmission The tip is fixedly arranged on the upper surface of platen, mainshaft gear linkage basin be rotationally arranged in female basin transmission tip rotary motion trace and with Drive gear is fixedly connected, and the second fixing bearing is provided between mainshaft gear linkage basin and central shaft；The mainshaft gear linkage Basin outer edge surface is provided with some open slots, and periphery equi-spaced apart of some open slots along mainshaft gear linkage basin is set, open slot The interior movable blocking arm provided with eccentric rotation, the lower end of some driving levers, which is corresponded, to be arranged in open slot, and driving lever and activity The turning end of blocking arm is hinged, and the eccentric end of movable blocking arm coordinates with female basin transmission tip to be driven, and eccentric end and the drive of movable blocking arm Reduction torsion spring is provided between moving gear.

According to above scheme, the sub- wheel assembly includes circle bobbin shaft and some sub-line wheels, and some sub-line wheels are set with successively On circle bobbin shaft, and the overload separation device constituted between sub-line wheel and circle bobbin shaft provided with spring and hoodle；The center Axle top is arranged in round bobbin shaft and coordinated with it in gap, and circle bobbin shaft upper end is connected by the first fixing bearing and top board Connect.

According to above scheme, the round bobbin shaft lower end provided with linkage disk, linkage disk lower surface be provided with driving lever End coordinates the linkage tip of transmission.

According to above scheme, the vertical rod of the frame side is provided with tooth sector and power pelletron, and power pelletron passes through Tooth sector is connected with drive gear.

According to above scheme, also including mosquito net, veiling support and some pulleys coordinated respectively with bus wheel and sub-line wheel The assembly pulley of group, the frame and connection bus wheel is fixed on the furred ceiling face above mosquito net, and the pull rope on bus wheel passes through Corresponding assembly pulley is connected on the veiling support of mosquito net；The assembly pulley of the connexon line wheel is fixed on veiling support, son Pull rope in line wheel is connected on the account body footing of mosquito net by corresponding assembly pulley.

According to above scheme, the frame is provided with to be coordinated with clutch lowering or hoisting gear, drive gear, sub- wheel assembly respectively Release mechanism.

According to above scheme, the release mechanism includes semicircular limitation ring, and limitation ring is correspondingly arranged with gearshift cross bar, And limitation ring is rotatably connected on guiding ring gear；The limitation ring is provided with extension spring and drag-line, extension spring and drawing One end of rope is both connected on the one end on limitation ring string side, and the other end of extension spring is connected with base plate and then makes limitation ring string side The other end protrude from be oriented to ring gear pressure fluctuating orbit.

According to above scheme, some vertical rods are provided with bead back-up ring and sub-line back-up ring, and bead back-up ring is accordingly located at On the outside of power pelletron on drive gear, and bead back-up ring can be up and down along vertical rod, and sub-line back-up ring is accordingly fixedly arranged on some The outside of sub-line wheel.

The utility model has the beneficial effect that：The utility model is rational in infrastructure, and drive gear passes through center in reversing mode Axle drives gearshift cross bar to rotate, and gearshift cross bar forces up and down with switch operating plane by the effect of guiding ring gear, under normal conditions Gearshift cross bar is limited in the high-order working face for forcing fluctuating orbit by positioning stage clip, and now integrated model is flat in self-locking Weighing apparatus state；

Four kinds of patterns that drive gear exists in different working face work：

First, the drive gear under normality is in high-order working face, and driving lever upper end connects with the linkage tip transmission on linkage disk Connect, bus wheel realizes reversion locking by one-way locking device；Drive gear, which drives sub-line wheel to rotate forward, rises the account body of mosquito net； It is raised to account after required height, the external force revocation on drive gear, the reversal effect that sub-line wheel is produced by account body Action of Gravity Field Power is conducted to central shaft, gearshift cross bar via driving lever, drive gear and the first unilateral bearing and is oriented to ring gear；Due to positioning stage clip Effect make gearshift cross bar and be oriented to ring gear high-order orbital plane between have horizontal direction frictional resistance, reversal effect power with Frictional resistance reaches poised state to realize the self-locking of sub-line wheel.

Second, drive gear reversion drives the gearshift cross bar on central shaft to enter high-order work towards low level working face transition During face, drive gear and driving lever decline therewith, and driving lever upper end is separated with the linkage tip on sub-line wheel, and sub-line wheel can be in account body gravity In the presence of reversion so that account body decline；The reversion pulling force on drive gear is then cancelled, gearshift cross bar is made in positioning stage clip With it is lower it is automatic it is up return to high-order working face, drive gear and driving lever thereon re-establish drive connection with linkage disk so that Relocked sub-line wheel.

3rd, when drive gear is switched to low level working face, the stroke reed on central shaft promotes cylinder mother's axle to decline, and makes Lower tray declines with clutch discs along vertical rod, upper platen, and separation is so as to one-way locking device release bus between bus wheel, lower tray Wheel makes it freely to be rotated in cylinder mother's axle, veiling, support and mosquito net is integrally fallen under Action of Gravity Field；

4th, during drive gear switching middle position working face, stroke reed release cylinder mother's axle makes clutch discs go up, and supports bullet Spring driving lower tray rises simultaneously coordinates clamping bus wheel with upper platen, and now limited by the second unilateral bearing can not for bus wheel Reversion；And the movable blocking arm of driving lever lower end and female basin transmission tip engaged transmission, now drive gear, which is rotated forward, can drive bus wheel to enter And lift veiling support height needed for；Now cancel external pull, the one-directional rotation that cylinder mother's axle passes through the second unilateral bearing Property makes female wheel component return to self-locking state.

The utility model realizes the up and down balance system of mosquito-net body, veiling, integral support by the combination of said structure Regulation and arbitrary height are parked, removing and installing when facilitating user's suspension height regulation overall to mosquito net, reducing daily cleaning Difficulty, improves disassembly, cleaning convenience and safety in utilization, and terminal with compact integral structure is stable, have wide range of applications.

Brief description of the drawings

Fig. 1 is lifter internal structure schematic diagram of the present utility model；

Fig. 2 is female wheel component of the present utility model, sub- wheel assembly, one-way locking device part-structure schematic diagram；

Fig. 3 is drive gear of the present utility model, transmission component, clutch lowering or hoisting gear part-structure schematic diagram；

Fig. 4 is transmission component part planar structural representation of the present utility model；

Fig. 5 is guiding ring gear of the present utility model and safety pin portion deployed configuration schematic diagram；

Fig. 6 is lifter of the present utility model and assembly pulley and mosquito net mounting structure schematic diagram.

In figure：

1st, frame；2nd, central shaft；3rd, female wheel component；4th, sub- wheel assembly；5th, drive gear；6th, one-way locking device；7th, pass Dynamic component；8th, assembly pulley；11st, top board；12nd, base plate；13rd, vertical rod；21st, clutch lowering or hoisting gear；22nd, it is oriented to ring gear；23rd, shift gears horizontal Bar；24th, stage clip is positioned；25th, fluctuating orbit is forced；26th, ring is limited；27th, extension spring；28th, drag-line；29th, stroke reed；31、 Bus wheel；32nd, cylinder mother's axle；33rd, upper platen；34th, spring bearing；35th, female basin transmission tip；41st, the first fixing bearing；42nd, circle Bobbin shaft；43rd, sub-line wheel；44th, link disk；45th, link the tip；46th, sub-line back-up ring；51st, the first unilateral bearing；52nd, mainshaft gear Link basin；53rd, the second fixing bearing；54th, open slot；55th, tooth sector；56th, power pelletron；57th, bead back-up ring；61st, second Unilateral bearing；62nd, clutch discs；63rd, support spring；64th, lower tray；65th, silica gel friction plate；71st, driving lever；72nd, movable blocking arm； 73rd, reduction torsion spring；81st, mosquito net；82nd, veiling support.

Embodiment

The technical solution of the utility model is illustrated with embodiment below in conjunction with the accompanying drawings.

As shown in figures 1 to 6, a kind of self-positioning lowering or hoisting gear described in the utility model, including frame 1, the frame 1 is wrapped Top board 11 and base plate 12 are included, is fixedly connected between top board 11 and base plate 12 by some vertical rods 13；The top board 11 and base plate 12 Between vertical be equipped with central shaft 2, the clutch lowering or hoisting gear 21 that base plate 12 is moved up and down provided with driving central shaft 2；In described The upper, middle and lower portion of heart axle 2 is sequentially provided with sub- wheel assembly 4, the female wheel component 3 of drive gear 5, also including mosquito net 81, the and of veiling support 82 The assembly pulley 8 of some assembly pulleys 8 coordinated respectively with bus wheel 31 and sub-line wheel 43, the frame 1 and connection bus wheel 31 is consolidated On the furred ceiling face for being scheduled on the top of mosquito net 81, the pull rope on bus wheel 31 is connected to the account of mosquito net 81 by corresponding assembly pulley 8 On curtain support 82；The assembly pulley 8 of the connexon line wheel 43 is fixed on veiling support 82, and the pull rope on sub-line wheel 43 passes through Corresponding assembly pulley 8 is connected on the account body footing of mosquito net 81；Above-mentioned part constitutes the utility model agent structure, machine therein Frame 1 is fixed on installation top surface for main body frame, and the pull rope on female wheel component 3 and sub- wheel assembly 4 connects the He of mosquito net 81 respectively Veiling support 82, clutch lowering or hoisting gear 21 drives central shaft 2 and drive gear 5 up and down so as to switch different Working moulds Formula.

The female wheel component 3 includes bus wheel 31 and cylinder mother's axle 32, and cylinder mother's axle 32 is movably arranged in bus wheel Between 31 and central shaft 2, bus wheel 31 is respectively arranged at two ends with platen 33 and lower tray 64, and upper platen 33 passes through spring bearing 34 are connected with the vertical rod 13 of surrounding, and lower tray 64 is fixedly connected with cylinder mother's axle 32；The base plate 12 is filled provided with monodirectional locking 6 are put, one-way locking device 6 includes clutch discs 62, clutch discs 62 can be connected in the vertical rod 13 of its surrounding up and downly, clutch Some support springs 63 are provided between disk 62 and base plate 12, it is single that clutch discs 62 are provided with second be connected with the lower end of cylinder mother's axle 32 To bearing 61；The upper platen 33 can horizontally rotate in frame 1, and bus wheel 31 can be in cylinder mother's axle 32 and central shaft 2 certainly By rotating, and the second unilateral bearing 61 connected between cylinder mother's axle 32 and one-way locking device 6 is only capable of one-directional rotation；It is specific and Speech, female wheel component 3 can horizontally rotate in frame 1 and central shaft 2, due to the limitation of one-way locking device 6, female wheel component 3 Under normal conditions in reversion locking mode, in middle level, drive gear 5 can drive female wheel component 3 to rotate forward during working face, make veiling branch Frame 82 and mosquito net 81 rise；When one-way locking device 6 cuts off the connection between female wheel component 3, female wheel component 3 can be inverted So that the entire lowering of veiling support 82；Drive gear 5 under normality is in upper mode, its between sub- wheel assembly 4 all the time Drive connection is kept, drive gear 5 is limited by the first unilateral bearing 51 and can not inverted on central shaft 2, so that son wheel Component 4 keeps reversion self-locking state, and drive gear 5 rotates forward and can then be lifted with mover wheel assembly 4 height of mosquito net 81, is rising Realized after to certain height parked；The effect of the clutch lowering or hoisting gear 21 is to drive central shaft 2 and drive gear 5 Move up and down, and the reversion by limiting central shaft 2 realizes that the reversion of sub- wheel assembly 4 is parked；The utility model is by above-mentioned Effective cooperation of each mechanism, drives the rotating forward of female wheel component 3 and sub- wheel assembly 4 to realize veiling support 82 or mosquito net 81 respectively Lifting, and the veiling support 82 and mosquito net 81 under self-locking poised state are parked under arbitrary height.

The first fixing bearing 41 is provided between the sub- wheel assembly 4 and top board 11, is connected between drive gear 5 and central shaft 2 The first unilateral bearing 51 is connected to, drive gear 5 is provided with the transmission component 7 coordinated respectively with sub- wheel assembly 4, upper platen 33；Institute The lifting for driving female wheel component 3 and sub- wheel assembly 4 to realize mosquito net 81 respectively by transmission component 7 when drive gear 5 is rotated forward is stated, Clutch lowering or hoisting gear 21 can drive the clutch discs 62 in one-way locking device 6 to decline veiling support 82, and drive gear declines can The connection between transmission component 7 and sub- wheel assembly 4 is cut off, mosquito net 81 is declined so as to discharge sub- wheel assembly 4.

Specifically, due to the limitation of one-way locking device 6, bus wheel 31 is in reversion locking mode under normal conditions, this When drive gear 5 be transferred to lower layer model female wheel component 3 can be driven to rotate forward so that veiling support 82 rises overally；Work as clutch discs When 62 clampings for declining between disengaging and upper platen 33 coordinate, bus wheel 31 can be freely inverted so that account in cylinder mother's axle 32 Curtain support 82 declines；Drive gear 5 under normality, which is in, remains drive connection between upper mode and sub- wheel assembly 4, drive Moving gear 5 is limited by the first unilateral bearing 51 and can not inverted on central shaft 2, so that sub- wheel assembly 4 keeps reversion certainly Lock status, and drive gear 5 rotates forward and can then be lifted with mover wheel assembly 4 height of mosquito net, it is real after certain height is risen to It is existing parked；The effect of the clutch lowering or hoisting gear 21 is to drive moving up and down for central shaft 2 and drive gear 5, and is passed through The reversion of limitation central shaft 2 realizes that the reversion of sub- wheel assembly 4 is parked；The utility model is in effectively matching somebody with somebody by above-mentioned each mechanism Close, the rotating forward of female wheel component 3 and sub- wheel assembly 4 is driven respectively to realize the lifting of veiling support or mosquito net, and self-locking balance Veiling support and mosquito net under state is parked under arbitrary height.

The upper platen 33 is provided with through hole, and the upper end of cylinder mother's axle 32 is rotationally arranged in the through hole of platen 33 It is interior, and driving key is connected between the through hole of cylinder mother's axle 32 and upper platen 33, between upper platen 33 and bus wheel 31, lower tray Silica gel friction plate 65 is equipped between 64 and bus wheel 31；When the driving of support spring 63 clutch discs 62 rise, cylinder mother's axle 32 drive lower trays 64 are with the clamping bus of platen 33 wheel 31 is closed, and the silica gel friction plate 65 between upper platen 33 and lower tray 64 is used In raising frictional drive coefficient, it is ensured that the self-locking stability of one-way locking device 6, drive gear 5 passes through transmission component when rotating forward 7 drive lower trays 64 are rotated forward, and its torque passes to upper platen 33 by driving key, cylinder mother's axle 32, so as to drive bus wheel 31 Rotated forward on the second unilateral bearing 61 and spring bearing 34.

The central shaft 2 is provided with the stroke reed 29 coordinated with clutch discs 62, and stroke reed 29 is fixedly arranged on drive gear Between 5 and the upper surface of cylinder mother's axle 32, and stroke reed 29 coordinates with cylinder mother's axle 32 in clutch transmission；The stroke reed 29 Decline it for the down maneuver of central shaft 2 to be passed into cylinder mother's axle 32, so that upper platen 33 and lower tray 64 are released Clamping to bus wheel 31 is linked, stroke reed 29 under the driving of clutch lowering or hoisting gear 21 with above and below the one of central shaft 2 Linkage, so as to promote clutch discs 62 to release the locking to bus wheel 31, makes veiling support 82 freely to decline under gravity.

As shown in Fig. 3, Fig. 5, the clutch lowering or hoisting gear 21 includes being oriented to ring gear 22 and gearshift cross bar 23, is oriented to ring gear 22 Located at the lower section of base plate 12 and it is secured to connection；The lower end of central shaft 2 penetrates rotatably base plate 12 located at guiding ring gear 22 It is interior, and central shaft 2 lower end with gearshift cross bar 23 be fixedly connected；It is connected between the lower surface of cylinder mother's axle 32 and base plate 12 Stage clip 24 is positioned, and positioning stage clip 24 is sleeved on central shaft 2；Gearshift cross bar 23 transverse strands, which are located at, to be oriented on ring gear 22, And gearshift cross bar 23 when horizontally rotating along being oriented to the upper and lower displacement of ring gear 22；The lower port for being oriented to ring gear 22 is first provided with two groups The pressure fluctuating orbit 25 that tail connects, force low level working face, high-order working face that fluctuating orbit 25 includes setting gradually and in Smooth transition surface is respectively connected between position working face, and low level working face, high-order working face and middle position working face；The gearshift is horizontal The two ends of bar 23 are arranged in corresponding pressure fluctuating orbit 25 respectively, along pressure fluctuating orbit when gearshift cross bar 23 horizontally rotates 25 upper and lower displacements；The effect of the clutch lowering or hoisting gear 21 is to promote central shaft 2 and drive gear 5 thereon, stroke spring Piece 29 is moved up and down, and positioning 24 pairs of gearshift cross bars 23 of stage clip apply upward active force, makes it with being oriented to the generation level of ring gear 22 The frictional resistance in direction, and the frictional resistance makes gearshift cross bar 23 keep stable on fluctuating orbit 25 is forced under normal conditions, from And the structure of central shaft more than 2 is in self-locking poised state；The reversion of drive gear 5 drives central shaft 2 to rotate, and gearshift is horizontal Bar 23 moves up and down along pressure fluctuating orbit 25 and is transferred to different working faces, the work different with the correspondence of drive gear 5 of central shaft 2 There are Three models in plane, during high-order working face, and the transmission component 7 on drive gear 5 is connected with sub- wheel assembly 4, unidirectionally Locking device 6 and clutch lowering or hoisting gear 21 realize the self-locking balance of female wheel component 3 and sub- wheel assembly 4 respectively；Low level working face When, the driving one-way locking device 6 of stroke reed 29 opens locking, bus wheel 31 is freely inverted, while sub- wheel assembly 4 is in State free to rotate；During middle position working face, stroke reed 29 falls after rise, and one-way locking device 6 locks bus wheel 31 integral Dynamic, transmission component 7 drives bus wheel 31 to rotate forward and realizes lifting, and drive gear 5 stops operating, and one-way locking device 6 is kept Reversion limitation to bus wheel 31, so as to realize the parked purpose of veiling support 82.

As shown in figure 3, the transmission component 7 includes some driving levers 71 set along same circumference equi-angularly space, some groups Bar 71 is arranged on drive gear 5 vertically, and one-way driving mechanism is provided between the lower end of driving lever 71 and upper platen 33, driving lever 71 Upper end coordinates with sub- wheel assembly 4 to be connected；The drive gear 5 is in an initial condition under high-order working face, driving lever 71 In connection off-state between the one-way driving mechanism at end and upper platen 33, when drive gear 5 is in clutch lowering or hoisting gear 21 When driving lower decline, driving lever 71 is connected by one-way driving mechanism and upper platen 33, so that drive gear 5 drives self-locking shape Female wheel component 3 under state is rotated forward, and then one-way driving mechanism fails in the reversion switch operating of drive gear 5 face, and busbar assembly 3 is kept Self-locking state will not be inverted with drive gear 5.

The one-way driving mechanism includes female basin transmission tip 35 and mainshaft gear linkage basin 52, and female basin transmission tip 35 is fixedly arranged on On the upper surface of upper platen 33, mainshaft gear linkage basin 52 be rotationally arranged in the female basin transmission rotary motion trace of the tip 35 and with drive Moving gear 5 is fixedly connected, and the second fixing bearing 53 is provided between mainshaft gear linkage basin 52 and central shaft 2；The mainshaft gear Link basin 52 and the integrally connected of drive gear 5, and the second fixing bearing 53 is two-way bearing, and mainshaft gear linkage basin 52 and second Fixing bearing 53 will not change the transmission direction of the first unilateral bearing 51, therefore can improve between drive gear 5 and central shaft 2 Bonding strength and transmission stability.

Mainshaft gear linkage basin 52 outer edge surface is provided with some open slots 54, and some open slots 54 join along mainshaft gear The periphery equi-spaced apart of dynamic basin 52 is set, and is provided with open slot 54 under the movable blocking arm 72 of eccentric rotation, some driving levers 71 End one-to-one corresponding is arranged in open slot 54, and the turning end of driving lever 71 and movable blocking arm 72 is hinged, the bias of movable blocking arm 72 End coordinates with female basin transmission tip 35 to be driven, and is provided with reduction torsion spring 73 between the eccentric end and drive gear 5 of movable blocking arm 72；Institute Drive gear 5 is stated in middle position working face, mainshaft gear linkage basin 52, the movable blocking arm 72 of the upper end of driving lever 71 are in female basin and passed In the dynamic tip 35, movable blocking arm 72 can centered on driving lever 71 eccentric rotary counterclockwise, the eccentric end of movable blocking arm 72 is in open slot During 54 outside, the eccentric end of movable blocking arm 72 is maximum and more than female basin transmission in the movable diameter that mainshaft gear links on basin 52 The rotational trajectory diameter of the tip 35, drive gear 5 is rotated, and movable blocking arm 72 contradicts and promotes female basin transmission tip 35 to rotate therewith, from And drive upper platen 33 and the bus wheel 31 linked with it to rotate forward；When drive gear 5 from high-order working face is transitioned into middle position work During making face, situation is contacted in the presence of two kinds between movable blocking arm 72 and female basin transmission tip 35, first, movable blocking arm 72 is inclined The reduction torsion spring 73 that heart end lower surface is rotating on the female basin transmission tip 35 of touching, movable blocking arm 72 is compressed so that female basin transmission The tip 35 is slipped in the movable lower surface of blocking arm 72；Second, movable blocking arm 72 is driven in the rotational plane of the tip 35 in female basin and rotated, it is living Dynamic blocking arm 72 is transferred in open slot 54 clockwise in the case where female basin is driven the stop of the tip 35, the now reversion of drive gear 5 and female wheel group Without drive connection on part 3, so as to drive the switching working mode of clutch lowering or hoisting gear 21.

As shown in Fig. 2 the sub- wheel assembly 4 includes circle bobbin shaft 42 and some sub-line wheels 43, some sub-line wheels 43 are successively It is sleeved on round bobbin shaft 42, and the overload separation constituted between sub-line wheel 43 and circle bobbin shaft 42 provided with spring and hoodle is filled Put；The top of central shaft 2 is arranged in round bobbin shaft 42 and coordinated with it in gap, and the circle upper end of bobbin shaft 42 is solid by first Dead axle holds 41 and is connected with top board 11；First fixing bearing 41 is two-way bearing, and sub-line wheel 43 matches somebody with somebody with central shaft 2 in rotation Close, thus sub-line wheel 43 and circle bobbin shaft 42 one can on top board 11 Double-directional rotary, drive gear 5 in high-order working face its On driving lever 71 be connected with sub- wheel assembly 4, drive gear 5 is rotated forward, and drives some sub-line wheels 43 to rotate lifting mosquito nets 81 Each tie point, and some sub-line wheels 43 are connected on round bobbin shaft 42 by overload separation device, when any company of mosquito net 81 When contact card line problem occurs or reaches the limit of height, overload separation device disconnects the company of correspondence sub-line wheel 43 and circle bobbin shaft 42 Connect, so as to realize the corrdinated adjustment function between some sub-line wheels 43；When the overall lifting of mosquito net 81 is to required height, Ruo Ganzi The gravity forces of line wheel 43 pass to clutch lowering or hoisting gear 21 by drive gear 5, central shaft 2, are carried by positioning stage clip 24 The pivoting friction resistance of confession realizes the locking of sub- wheel assembly 4, so as to realize parked function of the mosquito net 81 on arbitrary height.

The lower end of round bobbin shaft 42 is provided with linkage disk 44, and the lower surface of linkage disk 44 is provided with to be coordinated with the upper end of driving lever 71 The linkage tip 45 of transmission, the disk 44 that links is realized by the tip 45 that links with the cooperation of driving lever 71 to be driven, its structural principle and mother The basin transmission tip 35 is identical therefore does not repeat herein.

Operation principle：

Under normal conditions, gearshift cross bar 23 is on the high-order working face for forcing fluctuating orbit 25, the 24 pairs of gearshifts of positioning stage clip Cross bar 23 applies pressure so that it produces pivoting friction resistance, and gearshift cross bar 23 is stably in pressure fluctuating orbit 25 Prevent central shaft 22 from rotating, now the driving lever 71 on drive gear 5 and sub- wheel assembly 4 are in drive connection state, due to the One unilateral bearing 51 prevents drive gear 55 from being inverted on central shaft 2, the gravity reversal effect power of some sub-line wheels 43 via Circle bobbin shaft 42, linkage disk 44, the linkage tip 45, driving lever 71, drive gear 5, the first unilateral bearing 51 are conducted to central shaft 2, and Central shaft 2 is limited by the frictional resistance of gearshift cross bar 23 makes said mechanism be in self-locking poised state, is parked at mosquito net 81 On residing height.

Meanwhile, the support spring 63 applies to clutch discs 62 to be upwarded pressure, and lower tray 64 is clamped with closing platen 33 Bus wheel 31, now bus wheel 31 and upper platen 33, lower tray 64, circle bobbin shaft 42 form integral linkage structure, due to circle There is the second unilateral bearing 61 of one-directional rotation between bobbin shaft 42 and clutch discs 62, cause above-mentioned linkage structure in clutch discs It can not be inverted on 62, so that the veiling support 82 that bus wheel 31 is connected is parked on residing height.

The central shaft 22 and drive gear 55 thereon, mainshaft gear linkage basin 52, driving lever 71, the first unilateral bearing 51 and second fixing bearing 53 constitute centre shaft of the present utility model, gearshift cross bar 23 is with being oriented to tooth when drive gear 5 is inverted Ring 22 coordinates the up and down action for realizing centre shaft, so as to switch the working face of drive gear 5 and driving lever 71；Gearshift cross bar 23 exists When forcing parked in low level working face, high-order working face, middle position working face and the transition plane of fluctuating orbit 25, drive gear 5 have four kinds of co-rotating modes on central shaft 2：

First, the drive gear 5 under normality is in high-order working face, and the upper end of driving lever 71 and the linkage tip 45 of linkage disk 44 are passed Dynamic connection, drive gear 5 drives driving lever 71, the linkage tip 45, linkage disk 44, circle bobbin shaft 42 and some sub-line wheels 43 successively Rotate forward, make each tie point of mosquito net 81 while rising to required height.

Second, gearshift cross bar 23 is from high position work towards during low level working face transition, and drive gear 5 and driving lever 71 decline, Driving lever 71 is separated with the linkage tip 45 during this, and sub-line wheel 43 loses restraining force, is rotated under gravity pulling, mosquito-net body is with leading Messenger declines；When active force rut disappears, gearshift cross bar 23 is slid and returned to automatically on intermediate incline by the pressure of positioning stage clip 24 High-order working face, sub-line wheel 43 is locked again.

3rd, when drive gear 5 is switched to low level working face, the stroke reed 29 on central shaft 2 promotes cylinder mother's axle 32 Decline, lower tray 64 is glided with clutch discs 62 along vertical rod 13 and depart from upper platen 33, bus wheel 31 is free to rotate so as in weight Veiling support 82 is fallen under power effect.

4th, when gearshift cross bar 23 is in middle position working face, the release of stroke reed 29 cylinder mother's axle 32 make clutch discs 62 and Lower tray 64 thereon coordinates clamping bus wheel 31 with upper platen 33, and the lower end of driving lever 71 is with passing through movable blocking arm 72 and upper platen 33 On female basin transmission tip 35 be connected, drive gear 5, which is rotated forward, to be driven bus wheel 31 and then lifts veiling support 82 to required high Degree；After revocation is to the pulling force of drive gear 5, cylinder mother's axle 32 makes female wheel group by the one-directional rotation of the second unilateral bearing 61 Part 3 returns to self-locking state.

The utility model is realized the lift adjustment of mosquito net 81 and veiling support 82 and appointed by the combination of said structure Meaning is highly parked, facilitates user's flexibly using to mosquito net 81, improves disassembly, cleaning convenience and safety in utilization, overall structure It is succinct to stablize, have a wide range of application.

The vertical rod 13 of the side of frame 1 is provided with tooth sector 55 and power pelletron 56, and power pelletron 56 is by turning to Gear 55 is connected with drive gear 5；The power pelletron 56 is used to pull the forward or reverse of drive gear 5 manually, realizes Lowering or hoisting gear is to mosquito net 81, the descending operation of veiling support 82.

The frame 1 is provided with the safe machine coordinated respectively with clutch lowering or hoisting gear 21, drive gear 5, sub- wheel assembly 4 Structure；The release mechanism includes semicircular limitation ring 26, and limitation ring 26 is correspondingly arranged with gearshift cross bar 23, and limitation ring 26 It is rotatably connected on guiding ring gear 22；The limitation ring 26 is provided with extension spring 27 and drag-line 28, the He of extension spring 27 One end of drag-line 28 is both connected on the one end on limitation ring 26 string side, the other end of extension spring 27 be connected with base plate 12 and then The other end on the string side of limitation ring 26 is set to protrude from the pressure fluctuating orbit 25 for being oriented to ring gear 22；The limitation ring 26 is located at guiding Connected between the outside of ring gear 22, and limitation ring 26 and guiding ring gear 22 by rotating shaft, it is rotated being oriented on ring gear 22； The end of gearshift cross bar 23, which is stretched out, is oriented to ring gear 22 so that when its edge pressure fluctuating orbit 25 horizontally rotates, limitation ring 26 is with changing Gear cross bar 23 coordinates to avoid it from rotating the working face excessively to enter mistake；Connect between the limitation ring 26 and base plate 12 Extension spring 27 is connected to, the distal projection that ring 26 is limited under normal conditions is forcing the high-order working face and low level work of fluctuating orbit 25 Make between face, gearshift cross bar 23 contradicts the outer rim of limitation ring 26 when being rotated from high-order work towards low level working face, limit ring 26 Card stop the shifting gears rotation of cross bar 23 makes above-mentioned drive gear 5 and central shaft 2 rest on middle level working face, now integrated model Under second mode, sub-line wheel 43 is free to rotate so that the account body of mosquito net 81 be fallen；Make limitation ring when pulling drag-line 28 26 near-end is rotated, and the distal end for now limiting ring 26 rotates and retracted in pressure fluctuating orbit 25, and the near-end for limiting ring 26 is convex Rise on low layer working face, gearshift cross bar 23 enters low level working face from high-order working face and is restricted the stop reality of ring 26 Now force parked, and drive gear 5 and central shaft 2 rest on low level working face, integrated model is under the 3rd pattern makes Veiling support 82 and mosquito net are integrally fallen；Then release limitation ring 26 resets it under extension spring effect, then shifts gears horizontal Bar 23 can turn to middle position working face from low level working face or be rotated further into high-order working face to enter next circulation.

Some vertical rods 13 are provided with bead back-up ring 57 and sub-line back-up ring 46, and bead back-up ring 57 is accordingly located at sliding tooth The outside of power pelletron 56 on wheel 5, and bead back-up ring 57 can be up and down along vertical rod 13, if sub-line back-up ring 46 is accordingly fixedly arranged on The outside of dry sub-line wheel 43.

Some vertical rods 13 are provided with bead back-up ring 57 and sub-line back-up ring 46, and bead back-up ring 57 is accordingly located at sliding tooth The outside of power pelletron 56 on wheel 5, and bead back-up ring 57 can be up and down along vertical rod 13, if sub-line back-up ring 46 is accordingly fixedly arranged on The outside of dry sub-line wheel 43.

The above is only better embodiment of the present utility model, therefore all according to described in the utility model patent claim The equivalent change or modification done of construction, feature and principle, be included in the utility model patent claim.

Claims (10)

1. a kind of self-positioning lowering or hoisting gear, including frame (1), the frame (1) include top board (11) and base plate (12), top board (11) it is fixedly connected between base plate (12) by some vertical rods (13)；It is characterized in that：The top board (11) and base plate (12) Between vertical be equipped with central shaft (2), the clutch lowering or hoisting gear that base plate (12) is moved up and down provided with driving central shaft (2) (21)；The upper, middle and lower portion of the central shaft (2) is sequentially provided with sub- wheel assembly (4), drive gear (5) female wheel component (3), female wheel group Part (3) includes bus wheel (31) and cylinder mother's axle (32), and cylinder mother's axle (32) is movably arranged in bus wheel (31) and center Between axle (2), bus wheel (31) is respectively arranged at two ends with platen (33) and lower tray (64), and upper platen (33) passes through support shaft Hold (34) to be connected with the vertical rod (13) of surrounding, lower tray (64) is fixedly connected with cylinder mother's axle (32)；Set on the base plate (12) There is one-way locking device (6), one-way locking device (6) includes clutch discs (62), and clutch discs (62) can be connected to up and downly In the vertical rod (13) of its surrounding, it is provided between clutch discs (62) and base plate (12) in some support springs (63), clutch discs (62) Provided with the second unilateral bearing (61) being connected with cylinder mother's axle (32) lower end；Set between the sub- wheel assembly (4) and top board (11) There is the first fixing bearing (41), the first unilateral bearing (51), drive gear are connected between drive gear (5) and central shaft (2) (5) provided with the transmission component (7) coordinated respectively with sub- wheel assembly (4), upper platen (33)；The upper platen (33) and bus wheel (31) silica gel friction plate (65) is equipped between, between lower tray (64) and bus wheel (31).

2. self-positioning lowering or hoisting gear according to claim 1, it is characterised in that：The upper platen (33) is provided with through hole, The upper end of cylinder mother's axle (32) is rotationally arranged in the through hole of platen (33), and cylinder mother's axle (32) and upper platen (33) Through hole between be connected with driving key；The central shaft (2) is provided with the stroke reed (29) coordinated with clutch discs (62), stroke Reed (29) is fixedly arranged between drive gear (5) and cylinder mother's axle (32) upper surface, and stroke reed (29) and cylinder mother's axle (32) coordinate in clutch transmission.

3. according to any described self-positioning lowering or hoisting gears of claim 1-2, it is characterised in that：The clutch lowering or hoisting gear (21) Including being oriented to ring gear (22) and gearshift cross bar (23), ring gear (22) is oriented to located at base plate (12) lower section and connection is secured to；Institute State central shaft (2) lower end and penetrate rotatably base plate (12) in guiding ring gear (22), and lower end and the gearshift of central shaft (2) Cross bar (23) is fixedly connected；Positioning stage clip (24) is connected between cylinder mother's axle (32) lower surface and base plate (12), and it is fixed Position stage clip (24) is sleeved on central shaft (2)；Described gearshift cross bar (23) transverse strands are on guiding ring gear (22), and gearshift is horizontal Along guiding ring gear (22) upper and lower displacement when bar (23) horizontally rotates.

4. self-positioning lowering or hoisting gear according to claim 3, it is characterised in that：It is described to be oriented in the lower port of ring gear (22) Provided with two groups of end to end pressure fluctuating orbits (25), force low level working face that fluctuating orbit (25) includes setting gradually, It is respectively connected between high-order working face and middle position working face, and low level working face, high-order working face and middle position working face smoothed Cross face；The two ends of the gearshift cross bar (23) are arranged in corresponding pressure fluctuating orbit (25) respectively, cross bar (23) water of shifting gears Along pressure fluctuating orbit (25) upper and lower displacement when flat turn is dynamic.

5. self-positioning lowering or hoisting gear according to claim 1, it is characterised in that：The transmission component (7) includes some edges The driving lever (71) that same circumference equi-angularly space is set, some driving levers (71) are arranged on drive gear (5) vertically, under driving lever (71) One-way driving mechanism is provided between end and upper platen (33), the upper end of driving lever (71) coordinates with sub- wheel assembly (4) to be connected；Institute Stating one-way driving mechanism includes female basin transmission tip (35) and mainshaft gear linkage basin (52), and female basin transmission tip (35) is fixedly arranged on pressure On the upper surface of disk (33), mainshaft gear linkage basin (52) be rotationally arranged in the female basin transmission tip (35) rotary motion trace and with Drive gear (5) is fixedly connected, and the second fixing bearing (53) is provided between mainshaft gear linkage basin (52) and central shaft (2)；Institute State mainshaft gear linkage basin (52) outer edge surface be provided with some open slots (54), some open slots (54) along mainshaft gear link basin (52) periphery equi-spaced apart is set, and the movable blocking arm (72) of eccentric rotation, some driving levers (71) are provided with open slot (54) Lower end correspond and be arranged in open slot (54), and the turning end of driving lever (71) and activity blocking arm (72) is hinged, active catch The eccentric end of arm (72) coordinates with female basin transmission tip (35) to be driven, and movable blocking arm (72) eccentric end and drive gear (5) it Between be provided with reduction torsion spring (73).

6. self-positioning lowering or hoisting gear according to claim 1, it is characterised in that：The sub- wheel assembly (4) includes cylinder Axle (42) and some sub-line wheels (43), some sub-line wheels (43) are sleeved on round bobbin shaft (42) successively, and sub-line wheel (43) with The overload separation device constituted between circle bobbin shaft (42) provided with spring and hoodle；Central shaft (2) top is arranged in cylinder Coordinate in sub- axle (42) and with it in gap, circle bobbin shaft (42) upper end is connected by the first fixing bearing (41) and top board (11) Connect；Round bobbin shaft (42) lower end is provided with and driving lever (71) upper end provided with linkage disk (44), the lower surface of linkage disk (44) Coordinate the linkage tip (45) of transmission.

7. self-positioning lowering or hoisting gear according to claim 1, it is characterised in that：The vertical rod (13) of frame (1) side Tooth sector (55) and power pelletron (56) are provided with, power pelletron (56) is passed by tooth sector (55) and drive gear (5) Dynamic connection；Also include mosquito net (81), veiling support (82) and some cunnings coordinated respectively with bus wheel (31) and sub-line wheel (43) The assembly pulley (8) of wheel group (8), the frame (1) and connection bus wheel (31) is fixed on the furred ceiling face above mosquito net (81), female Pull rope in line wheel (31) is connected on the veiling support (82) of mosquito net (81) by corresponding assembly pulley (8)；The connection The assembly pulley (8) of sub-line wheel (43) is fixed on veiling support (82), and the pull rope on sub-line wheel (43) passes through corresponding pulley Group (8) is connected on the account body footing of mosquito net (81).

8. self-positioning lowering or hoisting gear according to claim 1, it is characterised in that：The frame (1) provided with respectively with from Close the release mechanism that lowering or hoisting gear (21), drive gear (5), sub- wheel assembly (4) coordinate.

9. self-positioning lowering or hoisting gear according to claim 8, it is characterised in that：The release mechanism includes semicircular limit Ring (26) processed, limitation ring (26) is correspondingly arranged with gearshift cross bar (23), and limitation ring (26) is rotatably connected to guiding ring gear (22) on；The limitation ring (26) is provided with extension spring (27) and drag-line (28), the one of extension spring (27) and drag-line (28) End is both connected on the one end on limitation ring (26) string side, and the other end of extension spring (27) is connected with base plate (12) and then makes limitation The other end on ring (26) string side protrudes from the pressure fluctuating orbit (25) for being oriented to ring gear (22).

10. self-positioning lowering or hoisting gear according to claim 8, it is characterised in that：Some vertical rods (13) are provided with drawing Pearl back-up ring (57) and sub-line back-up ring (46), the power pelletron (56) of bead back-up ring (57) accordingly on drive gear (5) is outside Side, and bead back-up ring (57) can be up and down along vertical rod (13), sub-line back-up ring (46) is accordingly fixedly arranged on some sub-line wheels (43) Outside.