CN204812958U - Lifting device for guardrail - Google Patents

Abstract

The utility model provides a lifting device for guardrail, stand about including, fix the guide arm on the stand about, protection network, sheer pole on, horizontal pole and locking device, its characterized in that, the lower level of protection network links to each other with the sheer pole, the sheer pole about with the stand link to each other, the protection network left and right sides links to each other with the guide arm, the left and right sides of protection network is passed through the guide arm and is upwards slided and then expand, the lapse is then folded, the higher authority of protection network links to each other with last horizontal pole, and left side or right side that last horizontal pole passes through the protection network link to each other with the guide arm is indirect, locking device includes colluding of horizontal pole left end or right -hand member or checkpost, collude or checkpost and last horizontal pole articulated, collude or the checkpost can radially stretch out or retract for last horizontal pole, be equipped with on the stand with the screens of colluding or the checkpost corresponds. The operation of this kind of lifting device for guardrail is light simple, the lift noiselessness, and the fault rate is extremely low, does not have hidden danger safely.

Description

The lowering or hoisting gear of guardrail

Art

The present invention relates to a kind of lowering or hoisting gear of guardrail, described guardrail can be Cribguard, also can be placed on ground playpen.Cribguard Main Function prevents infant or adult from falling down bed, plays safety protection function.Guardrail lifting device is mainly used in rising or putting down guardrail, facilitates the turnover of people.The lowering or hoisting gear of this guardrail can be applied on the Cribguard that is arranged on large bed, also can be applied on the guardrail of infanette or basket cot or sick bed or playpen.

Background technology

How safely and conveniently elevating guardrail after installing guardrail, thus facilitate the turnover of people, be a Focal point and difficult point.Patent 200610047830.5 discloses a kind of playpen be arranged on large bed, its shortcoming is: 1. noise is large, just sleeping baby is easy to wake up, because cross tube two ends are connected with the device that horizontally slips (guide rail parallel with column) respectively, not only easily produce noise, and cross tube two ends must be risen simultaneously, or cross tube must keep vertical with left and right pillar (namely vertical with the device that horizontally slips substantially in process of rising or falling, parallel to the ground in other words), if only have one end first rise or slightly tilt, will certainly block, because two column guide rail is parallel, article two, the oblique line between parallel lines is longer than the vertical line perpendicular to parallel lines, the rise of cross tube one end can make cross tube and guide rail out of plumb, and cross tube two ends spacing is fixing, so will certainly block, 2. inconvenient operation, needs both hands to pin the latch office at cross tube two ends simultaneously, and slow, wastes time and energy, 3. complex manufacturing, production cost is high, 4. dangerous, two ends, left and right be risen simultaneously and fix, take sb's mind off sth, A man cannot spin and reel at the same time., and this lifting fixed form very likely occurs only to fix, and another side does not fix, and unware situation, cause potential safety hazard, 5. fault rate is high, both sides to rise simultaneously and fixes, and requires high to parts, and the spacing of the sliding rail that the length of cross tube will be just in time parallel with two is equal, and slightly distortion or error will be blocked, 6. cross tube is directly connected with carriage, cause cross tube fall after enough low (that is can not drop to the position lower than bed surface) that can not decline, or necessary elongate posts is lower than the lower end of bed surface, extend the lower end of carriage, cross tube just can be made to drop to enough low horizontal level, the shortcoming of elongate posts lower end is, the mattress of a lot of bed is had now just to exceed several centimeters than edge of bed, elongate posts lower end, mattress just exceeds the bed just bad installation of several centimeters than edge of bed.

Patent 201220632633.0 discloses a kind of playpen, cross tube is fixed on left and right pillar by fixture, if but there is the guardrail of people's manipulator tail to drive column to tilt to tailstock direction, so the cross tube of bed side likely falls down from left and right pillar, there is potential safety hazard.So locking device not only will solve and prevent cross tube from moving downwards, upwards, in bed and to direction outside bed, and want effectively to prevent cross tube transverse shifting or to the right left.

Patent 201220214813.7 discloses a kind of catch means of Cribguard, after guardrail rises, rotate cross tube, the spiral being fixed on two ends, cross tube left and right hooks and will catch on hook corresponding on column, lock although this design can realize singlehanded both sides simultaneously, but still there is child's spiral in the process of push-and-pull guardrail to hook and loosen unblock gradually, there is certain potential safety hazard; In addition, this design needs to rise by swing arm to arrive precalculated position (other modes are inconvenient), and the article of bedside cupboard desk of bedside and so on often can block the movement locus of swing arm.

Summary of the invention

Main purpose of the present invention designs a kind of operation easily simply, and fault rate is extremely low, safely without hidden danger, and the guardrail lifting device that production cost is low.

The technical solution adopted for the present invention to solve the technical problems is: comprise left and right pillar, the guide rod be fixed on left and right pillar, protection network, sheer pole, cross tube and locking device, it is characterized in that, the following of described protection network is connected with sheer pole, sheer pole is connected with left and right pillar, the protection network left and right sides is connected with guide rod, the left and right sides of protection network is then launched by guide rod upward sliding, and slide downward is then folded up; The top of protection network is connected with cross tube, and cross tube is connected with guide rod indirectly by the left side of protection network or right side; Described locking device comprises hook or the clamp of cross tube left end or right-hand member, described hook or clamp and cross tube hinged, to hook or clamp can stretch out relative to cross tube or retract; Column is provided with and the screens hooked or clamp is corresponding.

(said cross tube is connected with guide rod indirectly by the left side of protection network or right side herein, refers to that the rod end of cross tube is only connected with protection network, is not directly connected with carriage)

Be connected with carriage relative to cross tube two ends in patent 200610047830.5, in this patent, cross tube is connected with carriage indirectly by protection network, the benefit of such design is, cross tube need not rise simultaneously or falls in two ends, rise to fall in process also need not with ground keeping parallelism; Time cross tube slides up and down, directly do not contact with guide rod, but the side of protection network contacts with guide rod, effectively prevent in lifting process the problem blocked or make a noise.In addition, the hook of cross tube rod end or clamp can stretch out relative to cross tube or retract, such design can greatly handled easily, if hook or clamp are fixed on the not flexible of cross tube rod end, time screens corresponding with column upper end after so rising cross tube is sealed, hold the screens that whole piece cross tube goes in alignment post, not so good operation, and cross tube is ined succession protection network, protection network can make this operation more allow people feel to have some setbacks to the holdback force of cross tube, if the hook of cross tube rod end or clamp can stretch, hook or clamp so with regard to directly taking cross bar rod end go the screens in alignment post, faster convenience.

Cross tube have at least one end rise after by described locking device and corresponding left column or right column hinged, then the other end rises connected with corresponding column again; Or, left and right pillar is provided with vertical positioner, cross tube two ends are risen simultaneously, be temporarily fixed on column be unlikely to fall down by the vertical positioner on column, are then successively locked at two ends, cross tube left and right by the locking device at left and right pillar or two ends, cross tube left and right.

The left end of described cross tube or right-hand member first rise hinged with corresponding column, and then the other end rises again; Or first upper horizontal rise is temporarily blocked.Like this, after can concentrating one's energy to fix one end of cross tube, then the other end is fixed.Not only operate more easy and convenient, and be not easy to make mistakes.

The left end of cross tube or right-hand member first rise hinged with corresponding column, and the hinged cross tube one end that just can make is risen, and the other end is still in low level, and two ends do not affect each other; If not hinged, rise left end, right-hand member droops down, bad operation, and easily damages junction.

As preferably, described vertical positioner can be arranged on hook on column or groove, and after cross tube rises, two ends ride on hook or groove.As preferably, hook or groove opening up or towards outside bed.

As preferably, described vertical positioner can be the saddle be arranged on column.Saddle and column form a L-type screens, after cross tube rises, two ends, left and right are shelved in the L-type screens on left and right pillar respectively, a hand just can keep cross tube not fall down slightly to front pushing away, and then locks two ends, cross tube left and right respectively with another hand.

As preferably, described vertical positioner can be clamp.Clamp opening becomes large from large to small or from large to small again, and clamp has elasticity or cross tube rod end has elasticity (pole can attenuate a bit under external force extruding), and after cross tube rises, two ends are stuck in clamp.As preferably, clamp is opening down or outer or towards oblique below towards bed.Such as, column is provided with the track parallel with column, in the upper end of track, track (is equivalent to a clamp) from large to small, time cross tube two ends (being made up of elastomeric material) rise to track upper end along track, just be stuck in after being unlikely to loose one's grip in track from large to small and fallen down, so just can vacate hand and come respectively cross tube two ends to be locked on left and right pillar.

Cross tube drives protection network to rise formation facade after rising; Unlocked device, cross tube drives protection network to fall.

As preferably, two, the left and right side of described protection network is connected with carriage, carriage is connected with column or sheer pole, described carriage comprises guide rail or guide rod, and described guide rail or guide rod can be rigid posts also can be that the rope tightened forms (fishing line etc. of such as iron wire or steel wire rope or overstriking).

Described carriage comprises slip meson.As preferably, described slip meson can be the sleeve or the collar that are connected with protection network side or overlap and hook or buckle fast or rope band or clamp or slide fastener, and sleeve or the collar or cover hook or buckle to be enclosed within guide rail or guide rod and can slide up and down that (sleeve can be cloth cover; Buckle (such as common in life key chain, dog's leash buckles, Fastener for climbing mountain, D shape is hung fast) convenient installation), or one of clamp is stuck in guide rail and can slides up and down, or rope band walk around guide rail or guide rod after be or stick up come (such as magic adhesive tape) or buckle come (such as rope band is provided with double buckle) can slide up and down.As preferably, above-mentioned sleeve or the collar or cover hooks or the position of card and guide rail or guide rod contact slide adopts noise-proofing material (such as plastics); As preferably, guide rail or guide rod outer with sleeve or the position that the collar or overlap hooks or rope band or clamp contact adopt noise-proofing material.

Described guide rail or guide rod can be the vertical rods (guide rail or guide rod also can be that lower end is connected with sheer pole, and upper end is connected with column) be fixed on column, also can be that column self forms guide rail or guide rod.

As preferably, two, the left and right side of protection network is connected with carriage, and carriage is connected with column or sheer pole, and described carriage comprises guide rail or guide rod.As preferably, described guide rail or guide rod can be rigid posts also can be that the rope tightened is formed.

As preferably, the side of protection network is connected with sleeve, and jacket casing is on described guide rail or guide rod.

As preferably, described guide rod upper end is connected with column by connecting rod, and the extension (extension refers to and the connector that guide rod upper end is connected) of guide rod upper end or guide rod upper end is higher than connecting rod, and described guide rod, connecting rod and column together constitute a draw-in groove.As preferably, the extension of guide rod upper end or guide rod upper end exceeds connecting rod at least 1.5cm, that is, the extension of guide rod upper end or guide rod upper end emerge connecting rod at least at least high 1.5cm of 1.5cm(not only can block cross tube and outwards laterally escape from groove screens, also can prevent cross tube from first upwards outwards laterally escaping from groove screens more simultaneously, because when cross tube rises to the height of connecting rod, often also reach the peak that protection network upwards stretches, to continue again upwards just to need to use very large strength, so to exceed connecting rod more in the extension of guide rod upper end or guide rod upper end, cross tube is more impossible upwards escapes from retaining groove), such guide rod, column and connecting rod three just constitute a groove screens (groove screens just constitutes a catch means) naturally, solve two problems guide rod and catch means are fixed on column simultaneously, be convenient to install, design succinctly (guide rod attractive in appearance, a tie point is only had) between catch means and column, and be convenient on column, wrap up crashproof sheet.As preferably, described guide rod is pipe, and guide rod is provided with aperture, and connecting rod, through aperture, is then screwed in column upper end, as preferably, described guide rod is iron staff, connecting rod is provided with aperture, guide rod upper end is through aperture, on connecting rod, cover has sleeve, while connecting rod is fixed on column by screw locking, column outer wall can be withstood in one end of sleeve, the other end then can withstand guide rod, thus guide rod is fixed, the benefit of design is like this: the first, is convenient to install, because guide rod will need user oneself to install through the sleeve of protection network side, guide rod just can fix through the screw of locking connecting rod after the hole on protection network side sleeve and connecting rod, second, guide rod can be regulated as required to emerge the height of connecting rod, this point is for very important the catch means preventing cross tube from upwards escaping from screens only by the downward pulling force of protection network, the height on guide rod top is shorter, it is lighter that rise cross tube crosses guide rod top, but safety coefficient lower (child more easily oneself upwards mentions cross tube), the height on guide rod top is higher, it is more painstaking that rise cross tube crosses guide rod top, but safety coefficient higher (strength of child is limited), so need to find a Best Point, neither too painstaking, child can not oneself mention again, find this Best Point can realize by regulating the height of guide rod.

As preferably, cross tube has at least one end to be connected with described guide rail or guide rod, the tie point of cross tube and described guide rail or guide rod be flexibly connect or the gap of tie point enough large, make after cross tube one end first rises, the other end can freely rise or fall; Cross tube left end or right-hand member are provided with locking device, and the upper end of left and right pillar or guide rod or guide rail is provided with corresponding locking device, after cross tube left end or right-hand member rise, by locking device and corresponding left column or right column or guide rod or guide rail hinged.

As preferably, described cross tube has at least one end to be connected with guide rail or guide rod, connect contact point and be provided with noise preventing device, the metallic rod that such as guide rail or guide rod adopt rod or outsourcing plastics or the rope tightened are made, or the contact site of cross tube and guide rail or guide rod adopts wood or plastics to make.

As preferably, two, the left and right side of described protection network is connected with tension rope (iron chains that such as expansion and contraction is very low or steel wire rope nylon rope band or VELCRO belt, also can be spring or stretch cord), tension rope upper end is connected with cross tube, lower end is connected with sheer pole or column lower end, after cross tube rises, tension rope is tightened, and prevents child from coming outbreak out from the gap between the side and column of protection network.

As preferably, column is provided with and sticks up bar, stick up bar one end and column hinged, cross tube after rising directly or indirectly with stick up bar and be connected, move and stick up bar, cross tube is upturned and fixes.

As preferably, two, the left and right side of described protection network is connected with folding rod, and folding rod upper end is connected with cross tube, lower end is connected with column lower end or sheer pole, cross tube rises, and folding rod launches, and prevents child from coming outbreak out from the gap between the side and column of protection network.

As preferably, that one end of first rising is not less than certain value X with the distance between the side of corresponding protection network and that tie point of the nearest of carriage, cross tube one end is risen, time the other end is in low level, cross tube, sheer pole, column, three is respectively on three limits of a right angled triangle, cross tube is on the hypotenuse of right angled triangle, so the length of cross tube adds certain value Y, just equal the hypotenuse length of right angled triangle, if stem height 50cm, sheer pole length 200cm, cross tube length 200cm, so Y=hypotenuse length deducts degree of growing crosswise=6.15cm, if protection network does not have elasticity and between cross tube and protection network, stable connection can not relative sliding, so certain value Y just equals certain value X, consider and be not fixedly linked between the elasticity of protection network and protection network and cross tube, so certain value X will be slightly less than certain value Y, so X=4cm.Like this, be just unlikely, first rise wherein one end time, because length is inadequate, make troubles to operation.

As preferably, the left end of described cross tube or right-hand member first rise hinged with corresponding column, and then the other end rises again, and that one end of rear rise is not less than 4cm with the distance between the side of corresponding protection network and that tie point of the nearest of carriage.

Because cross tube is connected with protection network, protection network is connected with guide rail or guide rod by carriage, so after cross tube falls, as long as the distance between the side of protection network and that nearest tie point of carriage is less than Z, would not hang on the ground.The terrain clearance of general bed surface, at about 40-60cm, both can so Z is only less than 40cm.

As preferably, described protection network can be yarn fabric or braid.

As preferably, the side of described protection network or protection network has elasticity, and after cross tube rises, the side of protection network or protection network keeps tensioned state, to the downward pulling force that cross tube one is lasting.Like this, the connection between cross tube and column can be made more firm, prevent child oneself from opening and fall guardrail, because the strength of child is limited, and need to pull-up, just can untie the connection between cross tube and column.Child Xie Kaisuo's may be uniquely that cross bar is pushed in couchant upwards front, so as preferably, the locking device on column comprises hook or screens, described hook or screens stop the left end of cross tube or right-hand member upward or to direction motion outside bed.

As preferably, described cross tube left end or right-hand member are connected with elastic rope or spring, and left end or the right-hand member of elastic rope or spring other end and corresponding column lower end or sheer pole are connected.Like this, elastic rope or spring can not only prevent child from coming outbreak out from the gap between the side and column of protection network, also can give the pulling force that cross tube one is downward.

As preferably, described buckle or hook or ring or draw-in groove or screens are provided with opening, and described rope enters buckle or hook or ring or draw-in groove or screens by opening.

As preferably, described cross tube left end or right-hand member are directly or indirectly connected with guide rail or guide rod, and being provided with one in column upper end can the block of opening and closing, after cross tube left end or right-hand member rise, closes block, stops cross tube left end or right-hand member to move downward; Or being provided with movable clip at cross tube left end or right-hand member, guide rail or guide rod upper end are provided with screens (such as raised or sunken or position, hole), and after cross tube left end or right-hand member rise, movable clip is stuck in screens and stops cross tube left end or right-hand member to move downward.

As preferably, described cross tube left end or right-hand member are connected with guide rail or guide rod, are provided with movable clip at cross tube left end or right-hand member, and guide rail or guide rod upper end are provided with screens, after cross tube left end or right-hand member rise, movable clip is stuck in screens and stops cross tube left end or right-hand member to move downward.

As preferably, locking device on described column comprises hook, hook is provided with limit track or hook participates in forming limit track, after the left end of cross tube or right-hand member enter limit track or after the locking device of cross tube left end or right-hand member enters limit track, after needing minimum conversion direction of motion, just limit track can be gone out.The locking device of described cross tube left end or right-hand member can be that snap fit (do not limit, and snap fit comprises thinner section and divides and clamp, and thinner section is divided can by the gap between limit track, and clamp is stuck in outside limit track by snap fit shape; So the left end of cross tube or right-hand member self also can form a snap fit, as long as such as arrange sunk part at cross tube left end or right-hand member, so sunk part is exactly that thinner section is divided, and can pass through limit track, the part that rod end does not cave in is exactly clamp, be stuck in outside limit track), also can be rope, one, rope be connected with cross tube, and one is connected with clamp, rope can by the gap between limit track, and clamp is stuck in outside limit track.Adopt the fixed form of limit track, can rise at cross tube two ends simultaneously, be connected with left and right pillar simultaneously.

As preferably, hook is provided with in column upper end, hook is provided with limit track or hook participates in forming limit track, described guide rod or guide rail are connected with hook, the left end of cross tube or right-hand member, after guide rod or guide rod enter the limit track of hook, just can go out limit track after needing minimum conversion direction of motion.

As preferably, described cross tube left end or right-hand member are provided with ring or hook or buckle or clamp, after the left end of cross tube or right-hand member rise, the ring corresponding with on column or hook or button or screens or clamp hinged.

As preferably, described left column or right column are provided with hasp, cross tube left end or the right-hand member locking device corresponding with on column hinged after, hasp fastens left end or the right-hand member of cross tube, stops it to move upward.

Hook corresponding on described left column or right column or button or clamp or screens are provided with opening, also be provided with block or gear rod or latch or snap-on, cross tube left end or right-hand member are provided with after ring or hook or buckle or clamp enter by described opening, more closed block or gear rod or latch or snap-on.

As preferably, the left end of described column or cross tube or the locking device of right-hand member comprise and buckling (such as common in life key chain, dog's leash buckles, Fastener for climbing mountain, and D shape is hung fast).

Described locking device comprises hook or the clamp of cross tube left end or right-hand member, described hook or clamp and cross tube hinged, described hook or clamp, with spanner, pull spanner, hook or clamp can rotate; Column is provided with corresponding screens, after the hook of cross tube left end or right-hand member or clamp enter screens, pull spanner and rotate hook or clamp, thus make hook or clamp can not escape from screens (refer to and do not rotate hook or clamp, hook or clamp can not escape from screens from Yuan Lu) from Yuan Lu.

As preferably, the hook of described cross tube left end or right-hand member or clamp and cross tube hinged, to hook or clamp can rotate, and can relative to cross tube radial motion (radial direction refers to the direction parallel with cross tube); As preferably, the hook of described cross tube left end or right-hand member or clamp and cross tube hinged, hook or clamp can rotate, and can relative to cross tube radial motion, described hook or clamp are connected with spring, spring is located on cross tube or in cross tube, and spring is given and hooked or the radial thrust of clamp one or pulling force.As preferably, after locking, the head of described hook is clipped between guide rod and column, or hooks in the upper end of guide rod.

As preferably, cross tube left end or right-hand member are provided with hook or clamp, described hook or clamp hinged with cross tube, hook or clamp can rotate and can relative to cross tube radial motion; Column is provided with and the screens hooked or clamp is corresponding, and the hook of cross tube left end or right-hand member or clamp enter screens and rotate or radial motion, thus sealed with screens.

As preferably, on left column or right column, corresponding hook or button or clamp or screens are provided with opening; After ring on described cross tube left end or right-hand member or hook or buckle or clamp enter described opening, pull spanner, make the ring on cross tube left end or right-hand member or hook or buckle or clamp catch on or block hook corresponding on left column or right column or button or clamp or screens.

As preferably, described cross tube left end or right-hand member are provided with clamp, and column is provided with corresponding draw-in groove; Draw-in groove is provided with opening, large in opening sulculus; Clamp and cross tube hinged, clamp can rotate, during rotation, clamp can be thicker or attenuate in the face of the face of draw-in groove opening, can enter in draw-in groove by draw-in groove opening when attenuating, then rotate clamp make it thicker just by draw-in groove opening not out.As preferably, clamp be provided with spanner (wrench shape is not limit, as long as design conveniently pull operation just can), facilitate rotating operation.

As preferably, the locking device on column comprises adds a cover hook, adds a cover hook and comprises block and positive stop, stops left end or the right-hand member upwards forward of cross tube.

As preferably, on left column or right column, corresponding ring or hook or button or clamp or screens are provided with opening, and opening becomes large from large to small again, and opening has elasticity.Ring on such aperture efficiency cross tube left end or right-hand member or hook or buckle or clamp smaller, can prevent the ring on cross tube left end or right-hand member or hook or buckle or clamp from running out; As preferably, opening up.

In order to prevent cross tube rise after left and right transverse shifting, cross tube left end or right-hand member are provided with horizontal screens, and column is provided with the clamp corresponding with horizontal screens, and clamp blocks horizontal screens, stop it or move right left.The internal diameter of the clamp on described column is less than horizontal screens maximum outside diameter and is greater than horizontal screens minimum outer diameter.

As preferably, the horizontal screens of described cross tube rod end refers to, has at least a place larger or little than the bar footpath at other positions, such as, be provided with a ring at rod end at cross tube rod end, and the external diameter of ring is greater than the bar footpath of cross tube; Or be provided with a ball at rod end, ball is connected by a thin rod with rod end, and ball footpath is the same large with cross tube bar footpath, but ball diameter is greater than the diameter of thin rod; Such as be provided with a groove in distance 2cm position, rod end summit again, the bar footpath of groove is less than the bar footpath on rod end summit; Such as be provided with a T-shaped clamp at rod end again, the head of T-shaped clamp is larger than bar.

As preferably, described locking device comprises snap fit, snap fit and column hinged, rotate snap fit, snap fit catches on cross tube.

As preferably, described locking device comprises U-shaped button, and U-shaped button is fixed on column, and can slide up and down, and slide downward fastens and locks cross tube, and upward sliding is then unblanked.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the present invention is further described.

Fig. 1 is the stereogram of first embodiment of the invention.

Fig. 2 is the detail view of first embodiment of the invention.

Fig. 3 is the detail view of second embodiment of the invention.

Fig. 4 is the detail view of third embodiment of the invention.

Fig. 5 is the detail view of four embodiment of the invention.

Fig. 6 is the detail view of fifth embodiment of the invention.

Fig. 7 is the detail view of sixth embodiment of the invention.

Fig. 8 is the detail view of seventh embodiment of the invention.

Fig. 9 is the detail view of eighth embodiment of the invention.

Figure 10 is the detail view of ninth embodiment of the invention.

Figure 11 is the detail view of tenth embodiment of the invention.

Figure 12 is the detail view of eleventh embodiment of the invention.

Figure 13 is the detail view of twelveth embodiment of the invention.

Figure 14 is the detail view of thirteenth embodiment of the invention.

Figure 15 is the detail view of thirteenth embodiment of the invention.

Figure 16 is the detail view of fourteenth embodiment of the invention.

Figure 17 is the detail view of fifteenth embodiment of the invention.

Figure 18 is the detail view of guide rod in fifteenth embodiment of the invention.

1. cross tubes in figure, 2. left column, 3. right column, 4. guide rod, 5. guide rod, 6. sheer pole, 7. protection network, 8. the collar, 9. protection network side, 10.T shape hooks, 11. buckles, 12. snap open, 13. circular hooks, 14. hooks, the under shed of 15. hooks, 16. hooks, 17. screens, 18. screens openings, 19. clamp bars, the spanner of 20. clamps, 21. draw-in grooves, 22. draw-in grooves, 23. snap fits, 24. snap fits, 25. card bead ropes, 26. ropes, 27. hooks, 28.U shape hooks, 29. annular hook, 30.L shape hooks, 31. add a cover hook, 32. hooks, the cross bar of 33. hooks, the spanner of 34. hooks, 35. hooks, 36. snap fits, 37. snap fits, 38. active catchs, 40. axle center, 41. snap fits, 42. saddles, 43. balls, the cross section of 44. cross tubes, 45. hooks, 46. screens, 47. hooks, the cross bar of 48. hooks, the spanner of 49. hooks, the connecting rod of 50. guide rods, 51. stuck points, 52. stuck points, 53. stage clips, 55. annulus, 56. sleeves, 57. nuts

Detailed description of the invention

In FIG, sheer pole (6) two ends are connected with right column (3) with left column (2) respectively.Protection network is made up of protection network (7), the limit, left side (9) of protection network is connected with multiple collar (8), the collar (8) is connected with guide rod (4), the collar can slide up and down along guide rod, plastic layer is enclose outside the collar, effectively can prevent noise, the collar is provided with spring opening, facilitates installation sleeve on protection network side and guide rod.Symmetrical with left side on the right side of protection network.Guide rod (4), (5) are separately fixed on left and right pillar.Following being connected with sheer pole of protection network (7), top is connected with cross tube (1).In figure cross tube (1) left end rise after by locking device and left column (2) hinged, the left end of cross tube (1) does not have directly to be connected with guide rod 4, but be connected with guide rod indirectly by the limit, left side of protection network, such cross tube has certain freely movable space and leeway.Be connected with right column upper end by locking device after cross tube right-hand member also rises, and drive protection network to rise together, form a facade.Unlocked device, cross tube drives protection network to fall, and facilitates the turnover of people.The collar in figure also can be directly be enclosed within column, and such column self is exactly guide rod, does not just need separately to establish guide rod.In addition, protection network side seams makes cloth sleeve, and cloth jacket casing replaces the collar on guide rod or column.The benefit of not sleeve is adopted to be more attractive in appearancely do not have gap.

In fig. 2, be the locking device detail view (in FIG, people is that the dead ahead standing in guardrail looks over, and Fig. 2 stands in look near the position of the left front of left column) that cross tube left end and left column are corresponding.The left end of cross tube (1) is provided with T-shaped and hooks (10), the large bar of T-shaped eave tile thin (so T-shaped hooks be equivalent to a horizontal screens); Left column (2) is provided with buckle (11), the opening (12) of buckle (11) changes from small to big, the thin bar part that minimum position hooks than T-shaped is just smaller, because buckle (11) has elasticity, just in time can stick among buckle so T-shaped hooks the thin bar part of (10), thus achieve the hinged of cross tube left end and left column.Buckle becomes large opening from large to small again and cross tube left end can be stoped to move upward, and the head that T-shaped hooks is greater than the inner ring space of buckle, so cross tube can not move left and right.Noiseproof plastics are provided with in buckle.Protection network (7) in Fig. 1 has elasticity in the vertical direction, to the pulling force that cross tube one is downward, so child oneself is difficult to the snap close untiing cross tube and column.Buckle in this embodiment becomes large opening from large to small again and has flexible protection network, and can prevent cross tube from moving upward, these two features, can possess simultaneously, also can be only possess one of them.In addition, T-shaped in this embodiment hooks also can change common annular hook or arc hook into, buckle (11) corresponding on column also can change U-shaped into or L-type hooks, as long as the hook of cross tube can stop cross tube after being connected with the hook of column about and movable just passable.In this example, can be first rise cross tube one end and rise the sick locking other end after locking again; If (protection network is more loose, downward pulling force is smaller) also can be that two ends are risen simultaneously and after two ends rise simultaneously, be shelved on (buckle 11 is also a saddle simultaneously) on the buckle 11 on left and right pillar, if cross tube is pushed buckle 11 to need larger power, so can successively at twice two ends, cross tube left and right be pressed into buckle, if the power that being pressed by cross tube needs into buckle 11 is not too large, then can cross tube two ends be pressed into buckle simultaneously simultaneously.

In figure 3, be the detail view (in FIG, people is that the dead ahead standing in guardrail looks over, and Fig. 3 stands in look near the position of left front of left column) of the locking device that have changed cross tube and column on the basis of first embodiment.The left end of cross tube (1) is provided with circular hook (13), the large bar of circular hook (13) head is thin, hook (14) is fixed on the upper end of left column (2), hook and column shaft together constitute a downward opening limit track, the circular thin bar part hooking (13) just in time can enter from the under shed of hook (14) from the bottom up, turn right again, finally the descending inner bottom part arriving hook afterwards.Meanwhile, the circular rounded nose hooked is greater than the orbit gap of hook, so move about restriction cross tube.Like this, cross tube left end just and hinged between column.Infant oneself unties cross tube downing track and needs minimum conversion direction of motion, so for very safe infant, can not untie.In addition, in order to more insure, can limit track descender (inner lane of hook) be designed have elasticity, and it be smaller just to can be compared to the circular thin bar part hooked, just need firmly by, otherwise, also need when former road returns firmly just by.

In Fig. 4, it is the detail view that have changed the hook on column on the basis of second embodiment.The limit track of the hook in second embodiment only has half-turn, the limit track that hook (16) is formed together with column has a whole circle many, from most inner lane out, need upwards, left, downwards, to the right, upwards, left, downwards could out, so safer.In addition, hook (16) also can be designed to circular arc.In addition, the hook in this example also can connect with the upper end of the guide rod in Fig. 1, and cross tube left end is connected with guide rod, enters the limit track of hook along guide rod.Finally, adopt the fixed form of hook limit track in this example, two ends, cross tube left and right can be risen simultaneously and fix, and not necessarily need first to rise one end and rise the other end again.

In Fig. 5, it is the detail view (in FIG, people is that the dead ahead standing in guardrail looks over, and Fig. 5 stands in look near the position of the left front of left column) of the locking device that have changed cross tube and column on the basis of first embodiment.Annular hook (29) U-shaped that can be enclosed within left column being fixed on cross tube (1) left end hooks on (28), article one, elastic rope (not drawing in figure) one end is connected with the left end of cross tube (1), the other end is connected with column lower end or sheer pole, the lowest pull that elastic rope can be mentioned between adult female to the downward pulling force size of cross tube and child can not mention or between the maximum pull that upwards boosts, such cross tube left end has just been fixed on column, can not before and after left backly to have moved up and down.In addition, the elastic rope in this example is connected with the side of protection network, and the elastic rope tightened plays the effect preventing child from coming outbreak out from the gap between protection network side and column, so just not necessarily need the guide rod that setting is connected with protection network side.(while that elastic rope having flexible, also having a maximum development length, is also just in time that elastic rope is when reaching maximum development length time also cross tube rises to peak.Like this, even if child pulls at protection network side, the gap between protection network side and column can not be got enough large.Such as, elastic rope can form by two strands, and one has elasticity, and one does not have elasticity, by do not have flexible this one to limit the maximum height that cross tube can rise.In this embodiment, if the elastic force of protection network is smaller, so cross tube two ends can be risen simultaneously and hang on the U-shaped hook of left and right pillar; If the elasticity rate of protection network is comparatively large, cross tube two ends be risen simultaneously hang on the U-shaped hook of left and right pillar, it is more difficult that practical operation is got up, so first can hang up properly one end to hang other end meeting more easily a lot.The present embodiment also can be, cross tube left end or right-hand member adopt horizontal screens (such as T-shaped hook 10 or circular hook 13) to replace annular hook 29; First hang up properly one end to hang the other end again and have two kinds of modes: the first: singlehanded left end of taking hangs left end, then hangs right-hand member; The second both hands hold cross tube, and two ends are almost risen simultaneously, the high slightly point in one end, and the short slightly point in one end, first hangs up properly that higher one end, then hangs that shorter one end.U-shaped in this embodiment hooks the effect simultaneously also serving a vertical screens.

In Fig. 6, it is the detail view (in FIG, people is that the dead ahead standing in guardrail looks over, and Fig. 6 stands in look near the position of the left front of left column) of the locking device that have changed column and cross tube left end on the basis of first embodiment.The lid that has that the horizontal component that the L shape be fixed on cross tube (1) hooks (30) can just in time enter on left column (2) from top to bottom hooks the opening of (31).Thus cross tube left end cannot be moved forward and backward (except the place of little opening may upwards be escaped from) up and down.In order to safer, the left end of cross tube (1) can be connected (not drawing in figure) with column lower end by an elastic rope, or the protection network (7) in Fig. 1 has elasticity, to the pulling force that cross tube is downward, child cannot be mentioned or upwards boost.Because guardrail height is generally high or similar than child shoulder, so child is difficult to upwards lift, unique may be half couchant with the hands upwards front push to cross bar, but cross tube can be added a cover hook " small lid " and blocked and can not move upward.Adding a cover in this embodiment hooks and L shape hook also can be arc.

In Fig. 7, it is the detail view (in FIG, people is that the dead ahead standing in guardrail looks over, and Fig. 7 stands in look near the position of the left front of left column) of the locking device that have changed column and cross tube left end on the basis of first embodiment.In figure, the cross section of the bar part (19) of clamp is rectangle; The spanner (20) of clamp down time (shown in figure), (cross section of the bar part of clamp is rectangle in the bar part (19) of clamp thicker face, the face at that place, limit that rectangle is longer) facing to fluting (17) opening, not by the opening (18) of draw-in groove (17).The left end of clamp and cross tube (1) is hinged, and pulls the spanner (20) of clamp, and the bar part (19) of clamp can be rotated.Pull general 90 degree of the spanner (20) of clamp with hand after, the thinner face (face at that place, limit that cross section rectangle is shorter) of the bar part (19) of clamp just can face toward the opening (18) of draw-in groove (17), and just in time can pass through.After the bar part (19) of the clamp opening (18) by draw-in groove (17), the spanner (20) of clamp is turned to down, thicker that of the bar part (19) of such clamp is facing to draw-in groove opening, the bar part of such clamp has just been stuck in inside draw-in groove can not out (opening of draw-in groove (17) be little, large in groove, have enough activity spaces in groove for the bar partial turn of clamp).

In Fig. 8, be the detail view of the locking device that have changed column and cross tube left end on the basis of first embodiment (in FIG, people is that the dead ahead standing in guardrail looks over, Fig. 8 stands in look near the position of the left front of left column, so draw-in groove (22) seems slightly somewhat narrow in figure, actual in wider in figure).Cross tube (1) left end is provided with draw-in groove (21), column (2) has corresponding draw-in groove (22), same, and cross tube right-hand member and right column are also provided with corresponding draw-in groove.Being risen at cross tube two ends rests on draw-in groove corresponding to left and right pillar, and after draw-in groove (21) snaps in draw-in groove (22), cross tube just can not be lower mobile all around, can only move upward.Latch gear (23) above draw-in groove is inserted to the right, blocks cross tube left end and move up.Enough gaps and activity space is had between draw-in groove (21) and draw-in groove (22), when making cross tube left end rise right-hand member be in low level, can not be stuck between two draw-in grooves.In addition, the draw-in groove 22 on this case central post can replace with hook; Or adopt tool protection network springy to replace latch gear (23) to prevent cross tube from moving upward; Or the opening of draw-in groove 22 is (namely the dead ahead of column) outwardly, after draw-in groove 21 snaps in, latch blocks cross tube and stops it outwards to move; Or latch gear adopts block to replace, and block is fixed on column, realizes opening and closing by rotating or sliding.

In Fig. 9, it is the detail view (in FIG, people is that the dead ahead standing in guardrail looks over, and Fig. 9 stands in look near the position of the left front of left column) of the locking device that have changed column and cross tube left end on the basis of first embodiment.Card bead rope (25) is connected with the left end of cross tube (1), card bead rope there are several card beads, the snap fit (24) that card bead ratio is fixed on column (2) is bigger, the rope of card bead rope can just by the opening of snap fit (24), the peak that the residing height of snap fit (24) can rise higher than cross tube, so after on card bead wire clips to snap fit, cross tube just firmly connects together with column, only have and upwards put on cross bar left end on the other hand, make card bead rope keep relaxed state could be untied from snap fit by card bead rope with another hand.Snap fit in this example also can be the buckle of band opening; Card bead rope also can be that a rope is connected with one or two or multiple clamp; As long as the clamp be connected with rope is large just more passable than the buckle with opening.In addition, snap fit in this example also can adopt the hook with limit track to replace, rope enters hook nexine by limit track, the clamp be connected with rope is larger than limit track, as long as so rope enters limit track, clamp is just all (such as hook can be designed to the spirality of spring-like, and the gap between a coil spring and another coil spring just constitutes limit track) that be stuck on hook all the time.In addition, the snap fit on the rope be connected with cross tube in this example and column can be exchanged, and that is snap fit is connected with cross tube, and rope is connected with column.

In Figure 10, it is the detail view (in FIG, people is that the dead ahead standing in guardrail looks over, and Figure 10 stands in look near the position of the left front of left column) of the locking device that have changed column and cross tube left end on the basis of first embodiment.The rope of length (26) one end can be regulated to be connected with cross tube (1) left end, and the other end is connected with an iron hoop.After cross tube left end rises, rope (26) walks around hook (27) successively from top to bottom, walk around 28 from the bottom up, the iron hoop that is finally connected with rope hangs over or be stuck in hook (32), rope is adjusted to appropriate length, when making the iron hoop be connected with rope hang over or be stuck in hook (32), cross tube left end just in time rises to peak.Hook in this example can adopt large the tying up of one or several skin-friction coefficients to hook replacement, the iron hoop be connected with rope in addition adopts heavier solid iron ball to replace, such rope can directly be wrapped in be tied up on hook, after a few circle of many windings, presses down cross tube rope also can not unclamp even if actual.

In Figure 11, it is the detail view (in FIG, people is that the dead ahead standing in guardrail looks over, and Figure 11 stands in look near the position of the left front of left column) of the locking device that have changed column and cross tube left end on the basis of first embodiment.The cross bar (33) of L shape hook is connected with cross tube (1) left end, the spanner (34) of L shape hook can rotate, when cross tube left end rises to the highest, the cross bar (33) of L shape hook is just in time a little more than the bottom portion of groove with the hook be fixed on column (35), and just in time can laterally (from right to left) insert hook (35) groove in (also can be, the hook of L shape and cross tube rod end hinged, also can horizontally slip along direction, bar footpath, in other words the cross bar 33 of L shape hook is inserted in above cross tube rod end cross section, that can insert also can outwards pull out one section deeply, but can not pull out completely, be equivalent to a latch), then the spanner (34) of L shape hook is pulled, make it to become down from the position upward in figure, so just the hook on column is just caught in the hook of cross tube, both are connected together.L shape hook in the present embodiment also can be other shapes, an annulus such as, weld a little iron, it is hinged with it that annulus is enclosed within cross tube rod end, and little iron is equivalent to spanner, and pulling spanner can make little iron unblank upward or sealed down by tumbler ring.In addition, as preferably, the side of the protection network (7) in Fig. 1 is provided with a VELCRO belt, VELCRO belt lower end is directly or indirectly connected with sheer pole, cross tube left end is walked around in the hook face of VELCRO, and then down return to be bonded on VELCRO hair side, so just can regulate the height of the side of protection network (7), thus the maximum height limiting cross tube left end and can rise can be regulated.

In Figure 12, it is the detail view (in FIG, people is that the dead ahead standing in guardrail looks over, and Figure 12 stands in look near the position of the left front of left column) of the locking device that have changed column and cross tube left end on the basis of first embodiment.Snap fit (36) is connected with the left end of cross tube (1), snap fit (37) is fixed on column upper end, which is provided with active catch (38), when active catch (38) is smoked, expose an opening, the crossbar sections of snap fit (36) can snap in snap fit (37) from this opening, and then active catch (38) closes opening downwards.Active open also can be designed to rotary type, and time that one end that in figure, active catch (38) is spherical is rotated upward, the opening of snap fit (38) is opened; Time that one end that active catch (38) is spherical is rotated down, the opening of snap fit (38) is closed.Or be designed to spring snap type, the key chain of similar active open or to buckle fast.Active catch (38) in the present embodiment also can be designed to one inverted U-shaped, an inverted U-shaped pin is directly connected with column, and can be up and down, and upwards pull up snap fit (37) opening and expose, the opening of snap fit (37) is then closed in downward activity.

In Figure 13, it is the detail view of the locking device that have changed column and cross tube left end on the basis of first embodiment.The left end of cross tube (1) is provided with lead ring (39) and is enclosed within guide rod (4), after rising to peak (higher than keeping off the residing height of rod (40) in figure), the active catch rod (40) being fixed on column (2) upper end moves right and blocks lead ring (39) and stops it to move downward.In the present embodiment, lead ring (39) can with a sphere diameter be greater than cross tube bar footpath be also greater than gap between guide rod and column wooden shot replace, two ends, cross tube left and right are clipped in the gap between guide rod and left and right pillar respectively, block owing to there being wooden shot, so can only move up and down, can not left and right transverse movement.The actual formation in gap between guide rod and column track, gap between guide rod and column from large to small, also more smaller than the bar footpath of cross tube in upper gap, guide rod upper end has elasticity and skin-friction coefficient large (such as guide rod upper end is surrounded by rubber layer), so guide rod and column upper end are equivalent to define a resilient clamp, cross tube is slightly firmly upwards carried after rising, and cross tube can be stuck in track upper end, left and right, and then lock gear rod.

In Figure 14, it is the detail view of the locking device that have changed column and cross tube left end on the basis of first embodiment.(in FIG, people is that the dead ahead standing in guardrail looks over, and Figure 14 stands in look near the position of the left front of left column).Cross tube left end is provided with ball (43), and sphere diameter is greater than the bar footpath of cross tube (1), is also greater than the inner width of saddle (42), can not move to the right so cross tube left end is placed on saddle.After cross tube two ends are risen simultaneously, place on the saddle of left and right pillar, in figure, the upper end of guide rod (4) is higher than saddle, cross tube two ends can be blocked like this, make it to be unlikely to fall down outward (if the upper end of guide rod (4) is equally high with saddle, after so rise cross tube places on the saddle of left and right pillar, need slightly firmly to go forward to push away with a hand, with an other hand by cross tube two ends successively locking).Snap fit (41) is provided with hinged with column in column (2) upper end, snap fit can rotate around axle center (40), cross tube two ends to be risen simultaneously and after placing on the saddle of left and right pillar, positive hour hands rotate snap fit (41), make it to catch on cross tube (1) from top to bottom, even if the upper end of guide rod is equally high with saddle, after being caught on by snap fit (41), cross tube all can not move before and after up and down.

In Figure 15, be that snap fit (41) rotates the detail view (seeing cross tube from left to right) after catching on cross tube.Ball (43) is eliminated in figure, after the cross section (44) of cross tube is caught on by snap fit, can only down or towards left (namely the direction at column place) motion, but this both direction has saddle and column to block respectively, so cross tube has been locked.The benefit of this embodiment is, simplicity of design, easy to operate, be convenient to produce.In 13 embodiment, also snap fit (37) or inverted U-shaped snap fit can be used to replace snap fit (41), inverted one of them pin of U-shaped snap fit is connected with column, and can slide up and down as latch, when upward sliding, inverted gap between U-shaped snap fit another pin and saddle becomes large, opening is opened, to enter above saddle below inverted U-shaped snap fit by this opening after cross tube rises, inverted U-shaped snap fit slide downward, opening is closed, and cross tube is closed between inverted U-shaped snap fit and saddle.

In Figure 16, be on the basis of the 13 embodiment, instead of snap fit (41) with hook (45).In third embodiment of the invention (Fig. 4), simultaneously push in hook (16) about two ends, cross tube left and right being lifted also simultaneously and compare effort, particularly when protection network is relatively tighter, time larger to the pulling force that cross tube is downward.So, in the 14 embodiment, two ends, cross tube left and right are first risen and are shelved on saddle (42), because this is not highly the peak of cross tube, protection network is also more loose, so this operation can be relatively lighter, and then successively two ends, cross tube left and right are pushed (hook 45 is in fact also a limit track) in hook (45) respectively.Certainly, disposable rise at cross tube two ends also can be selected also directly to push in hook (45).The sphere diameter of ball (43) is greater than the inner width of hook (45), so after cross tube left end enters hook, can not move right.Relative 3rd embodiment of the present embodiment, benefit is, there is saddle as undertaking springboard, when rising left end, cross tube right-hand member just need not be in low level (but being shelved on saddle), and the gap of the pin joint between such cross tube left end and column does not need too large (cross tube rocks little after locking) stayed.

In Figure 17, it is the detail view (in FIG, people is that the dead ahead standing in guardrail looks over, and Figure 11 stands in look near the position of the left front of left column) of the locking device that have changed column, guide rod and cross tube left end on the basis of first embodiment.The upper end of guide rod (4) is connected with column by the connecting rod (50) of guide rod, and the connecting rod of guide rod upper end, guide rod and column constitute a screens (46), hook (47) comprises the spanner (49) of hook and the cross bar (48) of hook, the cross bar (48) of hook is connected with cross tube (1) left end, the spanner (49) of hook can with the cross bar of hook for axis rotation, when cross tube left end rises to the highest, the cross bar (48) of hook is just in time a little more than the bottom portion of groove of screens (46), and can in the groove of horizontal cross (from right to left) insertion screens (46) (also can be just in time, hook and cross tube rod end hinged, also can horizontally slip along direction, bar footpath, in other words the cross bar 48 of hook 47 is inserted in above cross tube rod end cross section, that can insert also can outwards pull out one section deeply, but can not pull out completely, be equivalent to a latch), then outside hook is outwards pulled out one section, pull the spanner (49) of hook again, make it to become down from the position upward in figure, finally push inward back again (to the right), after rolling back, the head of the spanner (49) of hook is just in time placed in the below of the connecting rod (50) of guide rod, and be clipped in the gap between guide rod (4) and column (2), the spanner (49) of such hook is just blocked and can not have rotated freely, or outwards hook is outwards pulled out one section, (turn clockwise general 10-170 degree to pull the spanner (49) of hook again, ), finally push inward back again (to the right), after rolling back, the head of the spanner (49) of hook is just in time blocked in the outside of guide rod upper end, that is hook hooks (the height 2cm of the bottom of the head distance groove of the spanner (49) of hook on guide rod, and the height of the bottom of guide rod top distance groove is 3cm, do not go back so the head of spanner is blocked to turn, unless just can go back to upward first be pulled outwardly out one section by the spanner of hook after, retaining groove could be gone out again).Wrench head can be clipped in the gap between guide rod guide rod (4) and column (2) that (it is more difficult to operate, but be more difficult to resolve lock), also directly can be hooked by hook and (operate more simple and convenient, be applicable to a little bit smaller baby) on guide rod, user can select as required.Such design is safer relative to the embodiment of the tenth in Figure 11, can effectively prevent child oneself from unblanking.In this case, also the head of the spanner of hook (49) outwards can be extracted (stretching out), then retraction is inserted in the top of the connecting rod (50) of guide rod and is clipped in (namely direct hook is in the upper end of guide rod) in the gap between guide rod (4) and column (2), and this mode of operation is simpler; In addition, a spring can be designed, spring, to hook one power to the right, can hold hook like this, makes the head of the spanner of hook (49) be placed in the top of the connecting rod (50) of guide rod or below all the time and the gap be clipped between guide rod (4) and column (2); Or.Design spring structure as follows: the cross bar (48) of hook some be inserted in the hole of cross tube left end, the part be exposed is provided with stuck point (51), stuck point 51 external diameter is greater than the aperture in the hole of cross tube left end, the part being inserted in the inside is provided with stuck point (52), stage clip (53) is enclosed within the cross bar (48) of hook, its internal diameter is greater than the bar footpath of the cross bar of hook, but external diameter is less than the aperture in the hole of cross tube left end, is also less than stuck point (52).In addition, the right-hand member of cross tube can be designed to the 4th embodiment in Fig. 5, cross tube right-hand member first rises and hangs up properly, then the hook (47) of left end rises and is locked on left column, after left end locks, right-hand member can not be taken off easily, only have and first left end to be unlocked and right-hand member just can lower after falling, because right-hand member just can be untied after will lowering and must first upwards lifting hook cover, in the state that two ends, left and right are all risen, net is in tensioned state, will must use very large strength directly to above lifting cross tube right-hand member.Relative to the advantage of the 4th embodiment, the present embodiment is that descending operation is more easily easy, because the present embodiment only needs the connecting rod (50) that is lifted to by cross tube left end than guide rod slightly high, namely omit high several millimeters than the peak of design just can lock, and the 4th embodiment needs to mention and hooks the higher U-shaped that just can hang in the top of (28) than U-shaped and hook on (28), that is to mention than peak height about the 2-3cm designed, like this otherwise operation require great effort very much, that protection network can only be designed relaxes, after guardrail rises, net is very lax.

In Figure 18, it is the detail view of how location guide in embodiment 15.The right-hand member of connecting rod (50) is provided with an annulus with holes (55), guide rod upper end is through annulus, connecting rod left end is pinned (connecting rod left end be provided with screw thread) slightly larger than after the circular hole in connecting rod bar footpath by nut (57) through on sleeve (56) and column successively, after nut check, the left end of sleeve has withstood column, the right-hand member of sleeve has then withstood guide rod (internal diameter of sleeve slightly larger than the external diameter of annulus, so be unlikely to blocked by annulus and push up less than guide rod), and such guide rod has just been locked.

Claims (9)

1. the lowering or hoisting gear of a guardrail, comprise left and right pillar, the guide rod be fixed on left and right pillar, protection network, sheer pole, cross tube and locking device, it is characterized in that, the following of described protection network is connected with sheer pole, sheer pole is connected with left and right pillar, the protection network left and right sides is connected with guide rod, and the left and right sides of protection network is then launched by guide rod upward sliding, and slide downward is then folded up; The top of protection network is connected with cross tube, and cross tube is connected with guide rod indirectly by the left side of protection network or right side; Described locking device comprises hook or the clamp of cross tube left end or right-hand member, described hook or clamp and cross tube hinged, to hook or clamp can stretch out relative to cross tube or retract; Column is provided with and the screens hooked or clamp is corresponding.

2. the lowering or hoisting gear of a kind of guardrail according to claim 1, is characterized in that, described cross tube have at least one end rise after by described locking device and corresponding left column or right column hinged, then the other end rises connected with corresponding column again.

3. the lowering or hoisting gear of a kind of guardrail according to claim 1, is characterized in that, described guide rod upper end is connected with column by connecting rod, and guide rod upper end is higher than connecting rod at least 1.5cm.

4. the lowering or hoisting gear of a kind of guardrail according to claim 1, is characterized in that, the side of described protection network or protection network has elasticity, and after cross tube rises, the side of protection network or protection network keeps tensioned state.

5. the lowering or hoisting gear of a kind of guardrail according to claim 1, is characterized in that, described hook or clamp are connected with spring, and spring is located on cross tube or in cross tube, and spring is given and hooked or the radial thrust of clamp one or pulling force.

6. the lowering or hoisting gear of a kind of guardrail according to claim 1, is characterized in that, the head of described hook is clipped between guide rod and column, or directly hooks in the upper end of guide rod.

7. the lowering or hoisting gear of a kind of guardrail according to claim 1, is characterized in that, described cross tube have at least one end rise after by described locking device and corresponding left column or right column hinged; Described hinged for flexibly connect or tie point has enough gaps, make the other end of cross tube freely to rise or to fall.

8. the lowering or hoisting gear of a kind of guardrail according to claim 1, is characterized in that, described hook or clamp can stretch out relative to cross tube or retract, and hooks or clamp stretches out, then retracting hooks in screens corresponding on column.

9. the lowering or hoisting gear of a kind of guardrail according to claim 1, is characterized in that, described hook or clamp can stretch out relative to cross tube or retract, and hook or the top that clamp stretches out, then retraction is inserted in the connecting rod (50) of guide rod, hook the upper end at guide rod .