CN105384074A - Anti-falling device used for lifting mechanism of hoisting machine - Google Patents
Anti-falling device used for lifting mechanism of hoisting machine Download PDFInfo
- Publication number
- CN105384074A CN105384074A CN201511002294.2A CN201511002294A CN105384074A CN 105384074 A CN105384074 A CN 105384074A CN 201511002294 A CN201511002294 A CN 201511002294A CN 105384074 A CN105384074 A CN 105384074A
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- Prior art keywords
- cross
- pulley
- arm beam
- latch
- assembly pulley
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
- B66C15/02—Safety gear for retaining load-engaging elements in the event of rope or cable breakage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
The invention relates to an anti-falling device used for a lifting mechanism of a hoisting machine. The device comprises a pulley frame and a pulley block fixed to the pulley frame through a pulley shaft. Cross beams are arranged between pulleys on the inner sides of two vertical plates of the pulley frame and pulleys on the outer side of the pulley block. A locking block is supported on the upper portion of the front end of each cross beam. A pull rod which is vertically arranged acts on the tail portions of the cross beams. The bottom end of the pull rod is hinged to the pulley frame. The outer walls of the two outer pulleys of the pulley block are provided with a centrifugal force activated excitation device. When the pulleys are out of control, quickly rotates and makes centrifugal force larger than a preset vale, the excitation device beats the pull rod so that the pull rod can be disengaged from the cross beams, the cross beams rotate, and the locking blocks fall off and are self-locked by rubbing with the pulleys in a friction mode. By means of a centrifugal force activated locking device and the friction locking principle, the pulley block, a hoisting steel wire rope and the pulley frame are locked as a whole through the locking blocks, and the problem that the speed of the lifting mechanism suddenly stalls due to breaking of a speed reducer shaft and the steel wire rope, an existing device can not avoid falling of the lifting mechanism and lifting loads is solved.
Description
Technical field
The present invention relates to a kind of elevator machinery lifting mechanism falling proof device, be applicable to the safety precaution of Bridge Erector, lifting beam machine, beam shifting machine and various large scale hoisting machinery, can make elevator machinery because of hoisting system that the factors such as the fracture of winch reductor shaft, wire cable rupture cause fall off time, by locked to assembly pulley, pulley group frame and steel rope, stop lifting mechanism and lift by crane load and fall, belong to elevator machinery Manufacture and application field.
Background technology
At present; elevator machinery is widely used in the field such as bridge construction, large part lifting; for the object of safety guard-safeguard; lifting mechanism is provided with the safety guards such as the braking of low speed end, speed end braking more; but it is all installed on lifting speed reducing or hoists on winch; the lifting mechanism caused for factors such as reductor shaft fracture, wire cable ruptures and lifting load fall helpless, repeatedly cause serious accident.So erecting crane tool lifting mechanism falling proof device has very practical realistic meaning.
Summary of the invention
The object of the invention be to provide a kind of with centnifugal force activate, cheap, reliability is high, be convenient to the falling proof device for elevator machinery lifting mechanism of Inspection and maintenance.
For solving the problem, the technical solution used in the present invention is:
A kind of falling proof device for elevator machinery lifting mechanism, its gordian technique is: it comprises guide roller frame, the assembly pulley on described guide roller frame is fixed on by sheave shaft, between pulley, cross-arm beam free bearing is provided with cross-arm beam inside two risers of described guide roller frame and outside described assembly pulley, the latch that can slide up and down is provided with between two risers of described guide roller frame, described latch is the arc surface suitable with assembly pulley near the side of described assembly pulley, described latch is supported by described cross-arm beam, the caudal action of described cross-arm beam has the pull bar vertically arranged, described pull bar bottom by be arranged on pull bar free bearing inside guide roller frame upper vertical plate and described guide roller frame hinged, described assembly pulley two outside pulley outer wall is provided with excitation apparatus, when pulley fast rotational out of control causes that suffered by described excitation apparatus, centnifugal force is greater than preset security threshold value, impacting described pull bar causes itself and cross-arm beam to depart from, cross-arm beam rotates around cross-arm beam free bearing under latch Action of Gravity Field, latch falls and assembly pulley and wherein steel rope friction self-locking.
As preferably, described excitation apparatus comprise be arranged on described assembly pulley two outside elastic cable on pulley outer wall, be fixedly installed on exciting ball and being arranged on the elastic cable sheath outside elastic cable of described elastic cable end, described elastic cable sheath is fixed on the outside pulley outer wall of described assembly pulley.
As preferably, the arc surface side of described latch is laciniation, and the groove on it is corresponding with the grooving on pulley.
As preferably, between two risers of described guide roller frame, be provided with the positioning plate guiding described latch vertically to decline.
As preferably, described cross-arm beam free bearing is positioned at the middle part of described cross-arm beam, latch described in described cross-arm beam front support, and described cross-arm beam rear part is provided with downward hook plate, the top of described pull bar is provided with clamp, and described clamp is set in the groove that formed with described hook plate.
The beneficial effect adopting technique scheme to produce is:
Structure of the present invention is simple, utilizes the present invention, can overcome the above-mentioned shortcoming and defect that existing elevator machinery lifting mechanism safety guard exists; Locking device is activated with centrifugal principle; based on friction self-locking principle; by utilizing latch, assembly pulley, hoist rope and pulley group frame lock is integrated; solve when reductor shaft, wire cable rupture cause lifting mechanism to be fallen off; the lifting mechanism that existing device cannot overcome and the load that hoists fall problem; utilize the present invention; a kind of new design concept and technical guarantee can be provided for elevator machinery device protection device of standing up, be applicable to elevator machinery lifting mechanism and manufacture and design and transform reinforcing.
The present invention utilizes the locked principle of friction, assembly pulley, hoist rope and pulley group frame lock can be integrated by utilizing latch, solve when reductor shaft, wire cable rupture cause lifting mechanism to be fallen off, the lifting mechanism that existing device cannot overcome and the load that hoists fall problem.Be applicable to the safety precaution of Bridge Erector, lifting beam machine, beam shifting machine and various large scale hoisting machinery, when lifting mechanism is fallen off by locked to assembly pulley, hoist rope and pulley group frame, lifting mechanism can be prevented and the load falling from high altitude that hoists.
Accompanying drawing explanation
In order to be illustrated more clearly in the specific embodiment of the invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in detailed description of the invention or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is main TV structure schematic diagram of the present invention.
Fig. 2 is plan structure schematic diagram of the present invention.
Fig. 3 is the plan structure schematic diagram of latch of the present invention.
Fig. 4 is the mounting structure schematic diagram of cross-arm beam of the present invention.
Fig. 5 is the structural representation of braking procedure state one of the present invention.
Fig. 6 is the structural representation of braking procedure state two of the present invention.
Fig. 7 is the structural representation of braking procedure state three of the present invention.
Wherein: 1 latch, 1-1 latch, 1-2 groove, 2 cross-arm beams, 2-1 hook plate, 3 cross-arm beam free bearings, 4 pull bars, 4-1 clamp, 5 pull bar free bearings, 6 excite ball, 7 elastic cables, 8 elastic cable sheaths, 9 positioning plates, 10 pulleys, 11 guide roller frames, 12 sheave shafts.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing 1-7 and specific embodiment, clear, complete description is carried out to invention.
The structure of the present embodiment as illustrated in fig. 1 and 2, a kind of falling proof device device of mechanism of standing up for elevator machinery, it comprises guide roller frame 11, is fixed on the assembly pulley 10 on described guide roller frame 11 by sheave shaft 12, between pulley, cross-arm beam free bearing 3 is provided with cross-arm beam 2 inside two risers of described guide roller frame 11 and outside described assembly pulley 10, between two risers of described guide roller frame 11, is provided with the latch 1 that can slide up and down.Described guide roller frame 11 comprises the riser that two fixed symmetrical are arranged, and described sheave shaft 12 is fixedly installed between two risers.
As shown in Figure 3, described latch 1 is the arc surface suitable with assembly pulley 10 near the side of described assembly pulley 10, the arc surface side of described latch 1 is laciniation, be provided with multiple latch 1-1, groove 1-2 is formed between latch 1-1, described groove 1-2 is corresponding with the grooving on 10 groups, pulley, to ensure that hoist rope is freely movable in described groove 1-2 under normal working, the facade of described latch 1 is wedge shape, the arc surface radius of latch 1 is determined according to the pulley radius of assembly pulley 10, locked to ensure that latch 1 rubs when contacting with assembly pulley 10.Normal operation condition, latch 1 and assembly pulley 10, guide roller frame 11 preset clearances, hoist rope can free motion between the zig-zag gap of latch 1, meets elevator machinery and to hoist load demand.
Described latch 1 is supported by described cross-arm beam 2, the caudal action of described cross-arm beam 2 has the pull bar 4 vertically arranged, described pull bar 4 bottom is hinged with described guide roller frame 11 by the pull bar free bearing 5 being arranged on guide roller frame 11 upper vertical plate, described assembly pulley 10 two outside pulley outer wall is provided with excitation apparatus, described excitation apparatus is in assembly pulley 10 fast rotational out of control, when causing that suffered by described excitation apparatus, centnifugal force is greater than preset security threshold value, impact described pull bar 4 cause itself and cross-arm beam de-2 from, cross-arm beam 2 rotates around cross-arm beam free bearing 3 under latch Action of Gravity Field, latch 1 falls and assembly pulley 10 friction self-locking, the further motion of restriction assembly pulley 10 and hoist rope, reach the object preventing institute's hoisting heavy from falling.
Described excitation apparatus comprise be arranged on described assembly pulley 10 two outside elastic cable 7 on pulley outer wall, be fixedly installed on exciting ball 6 and being arranged on the elastic cable sheath 8 outside elastic cable 7 of described elastic cable 7 end, described elastic cable sheath 8 is fixed on the outside pulley outer wall of described assembly pulley 10, excite ball 6 to be positioned at elastic cable sheath 8 end under normal condition, described elastic cable 7 is positioned at assembly pulley 10 axle center outer fix.
As shown in Figure 4, described cross-arm beam free bearing 3 is positioned at the middle part of described cross-arm beam 2, latch 1 described in described cross-arm beam 2 front support, described cross-arm beam 2 afterbody is provided with downward hook plate 2-1, the top of described pull bar 4 is provided with clamp 4-1, and described clamp 4-1 sets in the groove that formed with described hook plate 2-1.Described pull bar 4 supports described cross-arm beam 2, glides for preventing normal operation condition latch 1.
The positioning plate 9 guiding described latch 1 vertically to decline is provided with between two risers of described guide roller frame 11, positioning plate 9 is fixed on guide roller frame 11, latch 1 is between positioning plate 9 and guide roller frame 11 riser, positioning plate 9 is determined according to latch 1 size with guide roller frame 11 riser gap, vertically slide for latch 1 cross spacing and guarantee latch, when latch 1 falls, positioning plate 9 and guide roller frame 11 riser play directional tagging.
As shown in Figure 5, when the lifting mechanism stall that reductor shaft fracture, wire cable rupture or other factors cause, under the centrifugal action exciting ball 6 to produce in assembly pulley 10 high speed rotating, elongate elastic cable 7 gradually, when exciting that suffered by ball 6, centnifugal force exceedes preset security threshold value, excite ball 6 will produce collision with pull bar 4, cause pull bar 4 and cross-arm beam 2 end to depart from, trigger falling proof device.
As shown in Figure 6, after pull bar 4 and cross-arm beam 2 end depart from, cross-arm beam 2 rotates around cross-arm beam free bearing 3 under latch 1 Action of Gravity Field, causes latch 1 and falls.
As shown in Figure 7, when latch 1 contacts with assembly pulley 10 and guide roller frame 11, friction is produced locked under assembly pulley 10 rotary action, thus the restriction further rotation of assembly pulley 10 and the motion of hoist rope, even if sub-thread hoist rope ruptures, lock due to institute's lay winding wire ropes on other assembly pulley 10 and pulley 10 and guide roller frame and be integrated, lifting mechanism can be avoided and the generation of the load falling accident that hoists.
As another kind of embodiment, the mechanical type flip flop equipment that pull bar 4 and pull bar free bearing 5 are formed can be changed to the triggering device of stroke switch of electronic type, or mechanical type is combined with electronic type, forms multiple protective.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in previous embodiment, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of embodiment of the present invention technical scheme.
Claims (5)
1. the falling proof device for elevator machinery lifting mechanism, it is characterized in that: it comprises guide roller frame (11), the assembly pulley (10) on described guide roller frame (11) is fixed on by sheave shaft (12), cross-arm beam free bearing (3) is positioned at inside two risers of described guide roller frame (11), safety gap is provided with assembly pulley (10) outside pulley, cross-arm beam (2) is positioned at cross-arm beam free bearing (3) top and can rotates around it, the latch (1) that can slide up and down is provided with between two risers of described guide roller frame (11), described latch (1) is the arc surface suitable with assembly pulley (10) near the side of described assembly pulley (10), described latch (1) is supported by described cross-arm beam (2), the caudal action of described cross-arm beam (2) has the pull bar (4) vertically arranged, under normal operation condition, state of equilibrium is in keep cross-arm beam, described pull bar (4) bottom is hinged with described guide roller frame (11) by the pull bar free bearing (5) be arranged on inside guide roller frame (11) riser, described assembly pulley (10) two outside pulley outer wall is provided with excitation apparatus, described excitation apparatus is when suffered by assembly pulley (10) fast rotary transmission out of control excitation apparatus, centnifugal force is greater than preset security threshold value, impacting described pull bar (4) causes itself and cross-arm beam (2) to depart from, cross-arm beam (2) is rotated around cross-arm beam free bearing (3) under latch Action of Gravity Field, latch (1) falls and assembly pulley (10) friction self-locking.
2. a kind of falling proof device for elevator machinery lifting mechanism according to claim 1, it is characterized in that: described excitation apparatus comprise be arranged on described assembly pulley (10) two outside elastic cable (7) on pulley outer wall, be fixedly installed on exciting ball (6) and being arranged on elastic cable (7) elastic cable sheath (8) outward of described elastic cable (7) end, described elastic cable sheath (8) is fixed on the outside pulley outer wall of described assembly pulley (10).
3. a kind of falling proof device for elevator machinery lifting mechanism according to claim 1 and 2, it is characterized in that: the arc surface side of described latch (1) is laciniation, the groove (1-2) on it is corresponding with the grooving on assembly pulley (10).
4. a kind of falling proof device for elevator machinery lifting mechanism according to claim 1, is characterized in that: be provided with the positioning plate (9) guiding described latch (1) vertically to decline between two risers of described guide roller frame (11).
5. a kind of falling proof device for elevator machinery lifting mechanism according to any one of claim 1-4, it is characterized in that: described cross-arm beam free bearing (3) is positioned at the middle part of described cross-arm beam (2), latch (1) described in described cross-arm beam (2) front support, described cross-arm beam (2) afterbody is provided with downward hook plate (2-1), the top of described pull bar (4) is provided with clamp (4-1), and described clamp (4-1) is set in the groove that formed with described hook plate (2-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511002294.2A CN105384074B (en) | 2015-12-29 | 2015-12-29 | A kind of falling proof device for hoisting machinery lifting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511002294.2A CN105384074B (en) | 2015-12-29 | 2015-12-29 | A kind of falling proof device for hoisting machinery lifting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105384074A true CN105384074A (en) | 2016-03-09 |
| CN105384074B CN105384074B (en) | 2017-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511002294.2A Active CN105384074B (en) | 2015-12-29 | 2015-12-29 | A kind of falling proof device for hoisting machinery lifting mechanism |
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| Country | Link |
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| CN (1) | CN105384074B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107161899A (en) * | 2017-01-22 | 2017-09-15 | 国网山东省电力公司检修公司 | A kind of self-locking pulley of anti-foreign matter |
| CN110963415A (en) * | 2019-10-31 | 2020-04-07 | 新疆工程学院 | Hoisting machine and hoisting mechanism overspeed protection method, device and equipment thereof |
| CN113685787A (en) * | 2021-10-26 | 2021-11-23 | 深圳市润格光电科技有限公司 | Suspension device for protecting accidental falling lamp |
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| JP2009113939A (en) * | 2007-11-07 | 2009-05-28 | Hitachi Ltd | Governor for elevator |
| CN101952538A (en) * | 2009-03-02 | 2011-01-19 | Db工业股份有限公司 | Fall arrest assembly |
| CN103030068A (en) * | 2012-12-26 | 2013-04-10 | 三一重工股份有限公司 | Protection device for rescue equipment and crane vehicle |
| CN104370216A (en) * | 2014-10-31 | 2015-02-25 | 芜湖三六机械有限公司 | Warning and braking acting device |
| CN204714266U (en) * | 2015-05-27 | 2015-10-21 | 江苏广通工程机械有限公司 | Building hoist safety anti-falling device |
| CN205367514U (en) * | 2015-12-29 | 2016-07-06 | 石家庄铁道大学 | A anti -falling device for hoisting machinery hoisting mechanism |
-
2015
- 2015-12-29 CN CN201511002294.2A patent/CN105384074B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009113939A (en) * | 2007-11-07 | 2009-05-28 | Hitachi Ltd | Governor for elevator |
| CN101952538A (en) * | 2009-03-02 | 2011-01-19 | Db工业股份有限公司 | Fall arrest assembly |
| CN103030068A (en) * | 2012-12-26 | 2013-04-10 | 三一重工股份有限公司 | Protection device for rescue equipment and crane vehicle |
| CN104370216A (en) * | 2014-10-31 | 2015-02-25 | 芜湖三六机械有限公司 | Warning and braking acting device |
| CN204714266U (en) * | 2015-05-27 | 2015-10-21 | 江苏广通工程机械有限公司 | Building hoist safety anti-falling device |
| CN205367514U (en) * | 2015-12-29 | 2016-07-06 | 石家庄铁道大学 | A anti -falling device for hoisting machinery hoisting mechanism |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107161899A (en) * | 2017-01-22 | 2017-09-15 | 国网山东省电力公司检修公司 | A kind of self-locking pulley of anti-foreign matter |
| CN110963415A (en) * | 2019-10-31 | 2020-04-07 | 新疆工程学院 | Hoisting machine and hoisting mechanism overspeed protection method, device and equipment thereof |
| CN113685787A (en) * | 2021-10-26 | 2021-11-23 | 深圳市润格光电科技有限公司 | Suspension device for protecting accidental falling lamp |
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| Publication number | Publication date |
|---|---|
| CN105384074B (en) | 2017-03-29 |
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