CN101333864B - Mechanical type anti-fall device capable of ascending scaffold - Google Patents
Mechanical type anti-fall device capable of ascending scaffold Download PDFInfo
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- CN101333864B CN101333864B CN2008101242093A CN200810124209A CN101333864B CN 101333864 B CN101333864 B CN 101333864B CN 2008101242093 A CN2008101242093 A CN 2008101242093A CN 200810124209 A CN200810124209 A CN 200810124209A CN 101333864 B CN101333864 B CN 101333864B
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Abstract
The invention relates to a mechanical anti-falling device used for lifting a scaffold; the anti-falling device is mounted on the scaffold and the corresponding lifting device and is composed of a compression spring, a compression spring plank, a stressed cross rod, a lever, an anti-falling pull rod and a locking mechanism which can be locked on the anti-falling pull rod; the locking mechanism is in insertion connection with the anti-falling pull rod; the compression spring plank is connected with the stressed cross rod supports the lifting device; one end of the compression spring is connected with the compression spring plank; the lever is hinged on the scaffold; one end of the lever is connected wit the locking mechanism and the other end is connected with the free end of the compression spring; when the compression spring pushes one end of the lever to rotate, the other end of the lever has pulling and supporting effect on the locking mechanism. The mechanical anti-falling device used for lifting the scaffold has the advantages that because the locking mechanism in the anti-falling device only moves upwards and is unable to move downwards, the lifting device and the scaffold can be reliably and tightly locked on the anti-falling pull rod; the locking mechanism has simple structure and convenient mounting.
Description
Technical field
The present invention relates to building machinery, but relate in particular to a kind of mechanical type anti-fall device of hoisting scaffold.
Background technology
Along with building constantly increases, but hoisting scaffold is improved synchronously by lifting means.Hoisting scaffold is in the process that promotes, if the stressed member that lifting means damages or promotes damages, the stressed mistake of hoisting scaffold is carried and will be produced the phenomenon of falling, and therefore falling proof device must be arranged.
At present, but the mechanical type anti-fall device of hoisting scaffold commonly used is a utility model patent (patent No.: ZL02293116.3 that is proposed on December 3rd, 2002 by applicant Nantong No.4 Building Installation Engrg. Co., Ltd., title: the anti-drop device of hydraulic lifting scaffold), its structure as shown in Figure 7.Whole anti-drop device is installed in hydraulic jack 102 tops, anti-drop device mainly by hoisting mechanism 106, clamping pin mechanism 103, link rope and 110 form.Hoisting mechanism 106 is positioned at the horizontal center of scaffold, sees also Fig. 8.It by semi girder 105, spring base 114, spring 115, cover plate 113, pole-climbing 104, form.Cover plate 113 nut that spins is passed in pole-climbing 104 upper ends, and semi girder 105 is fixed on the floor face, and spring base 114 is installed on the semi girder 105, and the upper end of spring 115 is against on the cover plate 113.Clamping pin mechanism 103 is for sleeping in and is provided with trellis batten 108 between clamping pin mechanism and scaffold on the hydraulic lifting scaffold fluctuating orbit that is installed in hoisting mechanism 106 both sides, and bar batten 108 is connected on the scaffold.Clamping pin mechanism mainly is made up of cylindrical shell 117, pressing plate 118, compression spring 121, load axle 120 and office's pin 119 compression, sees also Fig. 9.Compression spring 121 is arranged in the inner chamber bottom of cylindrical shell 117, on the inner chamber top of cylindrical shell 117 load axle 120 is arranged, load axle 120 lower ends are fixed on the pressing plate 118, and the external diameter of pressing plate 118 is greater than the load axle, and its part that goes out greatly forms the shaft shoulder.Be provided with the hole on the barrel at cylindrical shell 117 middle parts, insert office's pin 119 in this hole, the inner of office's pin 119 is against on the shaft shoulder of pressing plate 118, and the outer end of office's pin 119 is provided with pin-and-hole.Under the effect of compression spring 121, office pin 119 is stuck by pressing plate 118, and the mid portion that links rope 110 is through in the hole of hoisting mechanism cover plate 113, and the head at its two ends respectively ties up in the pin-and-hole of the office's pin 119 in the side clamping pin mechanism by fixed pulley mechanism 11.
Under the normal condition, the weight of hydraulic jack 102 and pole-climbing 104 is bearing on the spring 115 by pressing plate, at this moment, the gravity that bear spring 115 upper ends is greater than the elastic force of spring, cover plate 113 is pressed touch in the upper end of spring 115, the office's pin 119 in the clamping pin mechanism is blocked by pressing plate 118 by compression spring 121.When pole-climbing 104 fractures, or hydraulic jack self is malfunctioning up and down, pole-climbing 104 weightlessness, and the elastic force of the spring 115 in the hoisting mechanism is greater than the suffered gravity in its upper end, cover plate 113 is by spring 115 jack-up, thereby pulling links rope 110, and tether 110 drives office's pin 119 of getting in touch at two ends, makes it to extract pin-and-hole, load axle 120 ejects under the effect of compression spring 121, reach in the grid of bar batten 108, make whole hydraulic lifting scaffold locking, do not fall.
The defective that above-mentioned falling proof device exists is, one, and because of the flexible distortion of load axle, regular meeting is stuck in simplified 117, anti-fall weak effect; Its two, the bar batten that is provided with grid of the vertical framework of scaffold 108 processing troubles, cost height; Its three, linking rope is not rigid body, and the succession effect of power not as good as rigid body, thereby is influenced the anti-fall reliability of anti-drop device.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned prior art, but design a kind of anti-fall reliable for effectly and be convenient to the mechanical type anti-fall device of a kind of hoisting scaffold of processing and implementation, it is implemented by following technical scheme:
Be installed on scaffold and the corresponding lifting means, comprise the compression spring, the compression spring planet, stressed cross bar, lever, anti-fall pull bar and the retaining mechanism that can be locked on the anti-fall pull bar, the retaining mechanism cross-under is on anti-fall pull bar, the compression spring planet is connected with the stressed cross bar of the described lifting means of supporting, compression spring one end is connected on the compression spring planet, lever is articulated in described scaffold, one end of this lever connects retaining mechanism, one end connects the free end of compression spring, when compression spring promotion lever one end rotated it, the lever other end produced the pushing and pressing effect to retaining mechanism.
Described retaining mechanism is by the pressing plate return spring, guide pillar, thimble, steel ball, steel ball return spring and cross-under pressing plate and the lock body on described anti-fall pull bar formed, pressing plate places the upside of lock body, several guide pillars are connected on the pressing plate end face facing to lock body one side, the pressing plate return spring is plugged on the guide pillar, its free end is pressed and is touched on lock body, be evenly equipped with several inclined holes and several pilot holes on the lock body, each inclined hole upside is provided with the centre hole that is communicated with it, steel ball and steel ball return spring place in the inclined hole, thimble is plugged in the centre hole and by touching on steel ball from weight, guide pillar is plugged in the pilot hole, described lever one end is connected the pressing plate upper end, one end is connected with the free end of pressing plate return spring, at lever pressing plate is produced described pushing and pressing and do the time spent, pressing plate by thimble pushing and pressing steel ball along inclined hole to moving away from anti-fall pull bar axis direction, and compression steel ball return spring, at lever pressing plate is not had described pushing and pressing and do the time spent, the pressing plate return spring makes the pressing plate return, and steel ball return spring pushing and pressing steel ball moves to close anti-fall pull bar axis direction along inclined hole.
Described lock body is made up of cylinder, post circle and gland, and gland is connected the upper end of cylinder by screw, and post circle close-fitting is at the outer circumferential side of cylinder, and described several inclined holes and several pilot holes are separately positioned on cylinder and the post circle, and several centre holes are arranged on the gland.
The outer circumferential side of described gland is connected with dust cover.
The present invention connects the retaining mechanism and the lifting means that can be locked on the anti-fall pull bar by a lever, and this lifting means connects scaffold.When the scaffold that can promote falls, lever is rotated, the steel ball on the retaining mechanism will be pressed on the anti-fall pull bar, and whole retaining mechanism is locked on the anti-fall pull bar.Like this, scaffold and lifting means also are locked on the anti-fall pull bar.And retaining mechanism can only move up, and can not move down, so this locking is very reliable.Retaining mechanism is simple in structure simultaneously, needs only its cross-under on anti-fall pull bar, and installation is implemented very convenient, need be at the other auxiliary of preparation in construction.
Description of drawings
Fig. 1 is the retaining mechanism stress surface M stress on the stressed support and lever motion state diagram when normally climbing and climbing.
Fig. 2 is that the c of structure shown in Figure 1 is to view.
Fig. 3 is that the d of structure shown in Figure 1 is to view.
Fig. 4 is the structure of retaining mechanism and the schematic diagram that is in locking state.
Fig. 5 is the structure of retaining mechanism and the schematic diagram that is in releasing orientation.
Fig. 6 be retaining mechanism when improper attitudes such as pole-climbing fracture, stress surface M stress on the stressed support and lever motion state diagram.
But Fig. 7 is the mechanical type anti-fall device structural representation of existing hoisting scaffold.
Fig. 8 is the structural representation of the hoisting mechanism in the anti-drop device structure shown in Figure 7.
Fig. 9 is the structural representation of the clamping pin mechanism in the anti-drop device structure shown in Figure 8.
Among the figure, 110 link rope, 2 anti-fall pull bars, 3 levers, 4 pin joints, 5 compression springs, 6 compression spring planets, 7 scaffolds, the stressed support of 8 lifting means, 9 stressed cross bars, 11 lifting means force rods, 13 bolts, strut rail on 14,15 times strut rails, 16 supports, 17 channel-section steels, 20 retaining mechanisms, 21 pressing plates, 22 dust covers, 23 pressing plate return springs, 24 guide pillars, 25 post circles, 26 inclined holes, 27 steel ball return springs, 28 steel balls, 29 glands, 30 thimbles, 31 cylinders, 32 dust covers, 33 pilot holes, 40 jack, 102 jack, 103 clamping pin mechanism, 104 pole-climbings, 105 semi girders, 106 hoisting mechanisms, 108, bar batten, 113 cover plates, 114 spring bases, 115 springs, pressing plate 118, office's pin 119,120 load axles, 121 compression springs.
The present invention will be further described below in conjunction with drawings and Examples.
The specific embodiment
Contrast Fig. 1, Fig. 2, Fig. 3, anti-drop device of the present invention mainly are made up of compression spring 5, compression spring planet 6, stressed cross bar 9, lever 3, anti-fall pull bar 2 and retaining mechanism 20.Anti-fall pull bar 2 is settled on the supporting roof beam structure that is fixed on the fabric structure.Retaining mechanism 20 cross-under are on anti-fall pull bar 2, and its both sides connect channel-section steel 17, are fixed on the scaffold 7 by channel-section steel 17 and (see also Fig. 2, Fig. 3).Retaining mechanism 20 can lock on anti-fall pull bar or unclamp.Lifting means is a jack 40, and it is installed on the stressed support 8 of lifting means of scaffold 7, and is connected to lifting means force rod 11, and force rod 11 lower ends are free shape, and the upper end is by the force rod hold-down nut and tightly on supporting roof beam structure 51.Jack 40 is connected on the stressed cross bar 9, and stressed cross bar 9 can move between strut rail A on the stressed support 8 of lifting means and down horizontal B retaining.Jack 40 can along lifting means force rod 11 upwards or move down drive scaffold 7 and rise together or descend when mobile.
Contrast Fig. 4 or Fig. 5, the retaining mechanism 20 in apparatus of the present invention mainly is made up of pressing plate 21, return spring 23, guide pillar 24, thimble 30, steel ball 28, steel ball return spring 27, pressing plate 21 and lock body.Lock body then is made up of cylinder 31, post circle 25 and gland 29, and gland 29 is connected the upper end of cylinder 31 by screw, and post circle 25 close-fittings are in the outer circumferential sides of cylinder 31.Be evenly equipped with seven centre holes on the gland 29, the position of cylinder 31 corresponding seven centre holes is provided with seven inclined holes 26, and each centre hole is communicated with corresponding inclined hole 26.Steel ball return spring 27 places the bottom of inclined hole 26, and steel ball 28 is placed on the upper end of steel ball return spring 27, and thimble 30 is plugged in the centre hole, and its lower end is by touching on steel ball from weight.
Jack 40 connects retaining mechanism 20 by lever 3.Lever 3 is articulated on the two stands 16 that is connected on the scaffold 7.Its end is connected (referring to Fig. 3) by the upper end of the pressing plate 21 in bolt 13 and the retaining mechanism, and the other end touches the free end that compresses spring 5.Compression spring 5 places on the compression spring planet 6, and compression spring planet 6 is connected with stressed cross bar 9.
Contrast Fig. 1, jack 40 be in upwards climb or climb downwards fall normal condition the time, jack 40 and the weight that is connected the scaffold on this jack act on the downside M of stressed support 8 strut rail A by stressed cross bar 9.At this moment, the upper side of stressed cross bar 9 and M face closely touch, compression spring 5 is compressed and upwards pushes the right-hand member of lever 3, lever 3 is rotated around pin joint 4, and the left end of lever 3 is to the pressing plate 21 that presses down retaining mechanism 20 tops, 30 downward pressing steel balls 28 of thimble, steel ball 28 along inclined hole 26 to moving away from anti-fall pull bar axis direction, no longer be pressed on the anti-fall pull bar 2, steel ball return spring 27 is compressed, and retaining mechanism is in releasing orientation.At this moment, lifting means drive scaffold climbs on lifting means force rod 11 or climbs, and retaining mechanism is inoperative to lifting means and scaffold, please again referring to Fig. 5.
Contrast Fig. 6, when the upper end of lifting means force rod 11 nut (see figure 1) comes off or lifting means force rod 11 fracture etc. when making stressed cross bar 9 lose due supporting suddenly, scaffold will together fall with stressed cross bar 9.At this moment, the downside M of strut rail A no longer closely touches with the upper side of stressed cross bar 9 on the stressed support, and the M face does not stress, and compression spring 5 does not have active force to lever 3 right-hand members not by compression, and then the left end of lever 3 is to the pressing plate 21 no downward pressures on retaining mechanism 20 tops.Pressing plate 21 will move up under the effect of return spring power 5, this moment, thimble no longer was subjected to the compacting of pressing plate 21, steel ball moves to close anti-fall pull bar axis direction along inclined hole under the effect of steel ball return spring, makes steel ball be locked at (see figure 4) on the anti-fall pull bar.And anti-fall pull bar is fixed, so whole anti-drop device can only move up when abnormal condition, can not move down, and connection system for guide rail firmly is locked on the anti-faller, plays reliable fall arrest effect.Do not need to prepare again auxiliary during construction resemble the grizzly bar.
Claims (3)
1. but the mechanical type anti-fall device of a hoisting scaffold, be installed on scaffold and the corresponding lifting means, it is characterized in that comprising the compression spring, the compression spring planet, stressed cross bar, lever, anti-fall pull bar and the retaining mechanism that can be locked on the anti-fall pull bar, the retaining mechanism cross-under is on anti-fall pull bar, the compression spring planet is connected with the stressed cross bar of the described lifting means of supporting, compression spring one end is connected on the compression spring planet, lever is articulated in described scaffold, one end of this lever connects retaining mechanism, one end touches the free end of compression spring, when compression spring promotion lever one end rotated it, the lever other end produced the pushing and pressing effect to retaining mechanism;
Described retaining mechanism is by the pressing plate return spring, guide pillar, thimble, steel ball, steel ball return spring and cross-under pressing plate and the lock body on described anti-fall pull bar formed, pressing plate places the upside of lock body, several guide pillars are connected on the pressing plate end face facing to lock body one side, the pressing plate return spring is plugged on the guide pillar, its free end is pressed and is touched on lock body, be evenly equipped with several inclined holes and several pilot holes on the lock body, each inclined hole upside is provided with the centre hole that is communicated with it, steel ball and steel ball return spring place in the inclined hole, thimble is plugged in the centre hole and by touching on steel ball from weight, guide pillar is plugged in the pilot hole, described lever one end is connected the pressing plate upper end, one end touches with the free end of compression spring, at lever pressing plate is produced described pushing and pressing and do the time spent, pressing plate by thimble pushing and pressing steel ball along inclined hole to moving away from anti-fall pull bar axis direction, and compression steel ball return spring, at lever pressing plate is not had described pushing and pressing and do the time spent, the pressing plate return spring makes the pressing plate return, and steel ball return spring pushing and pressing steel ball moves to close anti-fall pull bar axis direction along inclined hole.
2. but the mechanical type anti-fall device of a kind of hoisting scaffold according to claim 1, it is characterized in that described lock body is made up of cylinder, post circle and gland, gland is connected the upper end of cylinder by screw, post circle close-fitting is at the outer circumferential side of cylinder, described several inclined holes and several pilot holes are separately positioned on cylinder and the post circle, and several centre holes are arranged on the gland.
3. but the mechanical type anti-fall device of a kind of hoisting scaffold according to claim 1 is characterized in that the outer circumferential side of described pressing plate is connected with dust cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101242093A CN101333864B (en) | 2008-07-03 | 2008-07-03 | Mechanical type anti-fall device capable of ascending scaffold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101242093A CN101333864B (en) | 2008-07-03 | 2008-07-03 | Mechanical type anti-fall device capable of ascending scaffold |
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| Publication Number | Publication Date |
|---|---|
| CN101333864A CN101333864A (en) | 2008-12-31 |
| CN101333864B true CN101333864B (en) | 2010-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008101242093A Active CN101333864B (en) | 2008-07-03 | 2008-07-03 | Mechanical type anti-fall device capable of ascending scaffold |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852010B (en) * | 2010-04-23 | 2012-07-04 | 谭徳炎 | Load control device for attached lifting scaffold |
| CN103899019B (en) * | 2014-03-26 | 2017-01-11 | 湖南省金为型材有限公司 | Curtain wall system |
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| CN101333864A (en) | 2008-12-31 |
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