CN203612862U - Roll type aerial ladder telescopic mechanism - Google Patents
Roll type aerial ladder telescopic mechanism Download PDFInfo
- Publication number
- CN203612862U CN203612862U CN201320857533.2U CN201320857533U CN203612862U CN 203612862 U CN203612862 U CN 203612862U CN 201320857533 U CN201320857533 U CN 201320857533U CN 203612862 U CN203612862 U CN 203612862U
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- ladder
- pulley
- terraced
- contracting
- strands
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 238000000605 extraction Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses a roll type aerial ladder telescopic mechanism. The roll type aerial ladder telescopic mechanism comprises a ladder frame, a pulley, ladder-extending ropes and ladder-extracting ropes, and is characterized by being provided with a roll, a supporting frame, a fixing shaft and a tension pulley, wherein the two strands of ladder-extending ropes extend from the roll and are respectively guided through a first-grade guide pulley and a second-grade guide pulley to be upwards wound to the side surface of a first unit ladder frame from the lower surface of the first unit ladder frame, the two strands of ladder-extending ropes are backwards wound through a fixed pulley and are wound across a ladder-extending direction-changing pulley, and the tail ends of the ladder-extending ropes are fixed to a ladder-extending rope fixing frame; the two strands of ladder-extracting ropes respectively extend from the roll, are respectively upwards wound to the side surface of the first unit ladder frame from the lower surface of the first unit ladder frame through a first-grade ladder-extracting pulley, are backwards wound and forwards wound after passing through a positioning pulley, and are backwards wound and backwards extend through a ladder-extracting direction-changing pulley, the tail ends of the ladder-extracting steel wire ropes are fixed to a ladder- extracting rope fixing frame, the roll rotates to power the extension and extraction of the ladder frame, a movable pulley is driven to extend and retract the ladder frame, and the stress on steel wires is reduced to a half.
Description
Technical field
The utility model relates to fire appliance technical field, specifically a kind of spool type aerial ladder telescoping mechanism.
Background technology
As everyone knows, fire fighting turnable ladder is as important fire appliance instrument, be mainly used in height rescue, the key of aerial ladder truck height rescue is ladder, described ladder is to be formed by least two mutual sliding block joints of unit ladder, unit joint ladder front end has one group of pulley, make unit ladder synchronization telescope by rope belt movable pulley, make more piece ladder synchronization telescope complete ascend operation, the groundwork of aerial ladder truck steel rope synchronization telescope is for utilizing speedup pulley principle, by pulley driving, above a joint ladder be one to save two times of terraced stroke below, ladder is stretched out successively.
Owing to adopting speedup pulley, downward successively, steel rope is stressed increasing, and every increase by saves ladder and means that steel rope is stressed and double.So ladder is more and more, steel rope is more and more thicker, because the size of winding steel wire rope pulley is on directly affecting the service life of steel rope, so steel rope is thicker, and the corresponding increase of diameter of pulley.And fire fighting turnable ladder is compared with other box type arm support fire extinguishing tankers, between ladder, gap is little, and large pulley is difficult for arranging.And steel rope is too thick, steel rope deadlock is very large, is unfavorable for that ladder shrinks.So aerial ladder truck is more and more higher, ladder is more and more, and aerial ladder steel rope is more and more thicker, so will solve its stressed increasing problem, can, be dragged the stressed of terraced steel rope by solving final section from bottom to top, reduces wirerope diameter.
If in the situation that ladder quality is certain, reduce steel rope stressed, only have by laborsaving pulley extension ladder, but the feature of laborsaving pulley is laborsaving increase stroke.If the flexible stroke that aerial ladder truck one saves ladder is L, by after laborsaving pulley, the collapsing length of steel rope becomes 2L so, and the flexible power of aerial ladder truck stretches as main take oil cylinder at present, if meet the stroke of 2L, oil cylinder need to very long or increase speedup assembly pulley.
Summary of the invention
The purpose of this utility model is to solve above-mentioned the deficiencies in the prior art, a kind of novel structure, characteristics of compact layout are provided, rotate as the flexible power of ladder by reel, drive movable pulley to complete ladder fore and aft motion, make that steel rope is stressed to reduce by half, and the increase and decrease that is wound around quantity by steel rope on reel meets the flexible stroke of aerial ladder, make pulley arrangements reasonable, steel rope is difficult for de-groove, the spool type aerial ladder telescoping mechanism that fore and aft motion is not interfered.
The utility model solves the technical scheme that its technical matters adopts:
A kind of spool type aerial ladder telescoping mechanism, comprise ladder, pulley, stretch ladder rope and contracting ladder rope, described ladder is at least formed by first module ladder and the mutual sliding block joint of second unit ladder, it is characterized in that being provided with reel, bracket, anchor shaft and tension pulley block, described reel two ends are fixedly connected with first module ladder rear portion through bracket respectively, on described reel, be wound around two strands and stretch ladder rope and two strands of contracting ladder ropes, described two strands of contracting ladder ropes and two strands are stretched ladder and are restricted and arranged by middle mind-set bilateral symmetry, described reel front is provided with anchor shaft, anchor shaft two ends are fixedly connected with bracket respectively, on described anchor shaft, be arranged with tension pulley block, be beneficial to adjust the degree of tension of the terraced steel rope of contracting, described first module ladder front end both sides are respectively equipped with dead sheave and stretch ladder rope fixed mount, both sides, rear end are respectively equipped with positioning pulley and contracting ladder rope fixed mount, the front of the relative reel in described first module ladder lower surface is provided with one-level pulley erecting frame and secondary pulley erecting frame successively, one-level pulley erecting frame upper end is arranged with respectively one-level leading sheave by middle mind-set both sides, secondary pulley erecting frame upper end is arranged with respectively secondary leading sheave and the one-level terraced pulley that contracts by middle mind-set both sides, the terraced pulley coaxle setting of contracting of described secondary leading sheave and one-level, described second unit ladder rear portion is provided with pulley fixed link, described pulley fixed link front end is provided with stretches terraced angle pulley, rear end is provided with the terraced angle pulley of contracting, stretch ladder rope and stretch out from reel for described two strands, and respectively by one-level leading sheave and secondary leading sheave guiding, below first module ladder upwards around to first module ladder side, be wound around backward by dead sheave, then walk around and stretch terraced angle pulley, the terminal of stretching ladder rope is fixed on and is stretched on ladder rope fixed mount, described two strands of contracting ladder ropes stretch out from reel respectively, and respectively by one-level contract terraced pulley below first module ladder around to first module ladder side, and be wound around backward, by being wound around forward again after positioning pulley, and be wound around backward extension by the terraced angle pulley that contracts, the terminal of terraced steel rope of making to contract is fixed on the terraced fixed mount of contracting.
The utility model is owing to adopting said structure, rotate as the flexible power of ladder by reel, drive movable pulley to complete ladder fore and aft motion, make that steel rope is stressed to reduce by half, and the increase and decrease that is wound around quantity by steel rope on reel meets the flexible stroke of aerial ladder, make pulley arrangements reasonable, steel rope is difficult for de-groove, has novel structure, characteristics of compact layout, the advantage such as easy to use, lightweight.
accompanying drawing explanation
Front view when Fig. 1 is the contraction of aerial ladder ladder.
Fig. 2 is the right elevation of Fig. 1.
The birds-eye view that Fig. 3 amplifies while being the contraction of aerial ladder ladder.
Fig. 4 is the front view of aerial ladder ladder while stretching out.
Fig. 5 is the right elevation of Fig. 4.
Reference numeral: 1: dead sheave; 2: stretch ladder rope fixed mount; 3: secondary leading sheave; 4: the one-level terraced pulley that contracts; 5: one-level leading sheave; 6: stretch terraced angle pulley; 7: bracket; 8: terraced angle pulley contracts; 9: contracting ladder rope fixed mount; 10: positioning pulley; 11: reel; 12: anchor shaft; 13: second unit ladder; 14: first module ladder; 15 tension pulley blocks.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further illustrated:
As shown in drawings, a kind of spool type aerial ladder telescoping mechanism, comprise ladder, pulley, stretch ladder rope and contracting ladder rope, described ladder is at least formed by first module ladder 14 and the mutual sliding block joint of second unit ladder 13, it is characterized in that being provided with reel 11, bracket 7, anchor shaft 12 and tension pulley block 15, described reel 11 two ends are fixedly connected with first module ladder 14 rear portions through bracket 7 respectively, on described reel 11, be wound around two strands and stretch ladder rope and two strands of contracting ladder ropes, described two strands of contracting ladder ropes and two strands are stretched ladder and are restricted and arranged by middle mind-set bilateral symmetry, described reel 11 fronts are provided with anchor shaft 12, anchor shaft 12 two ends are fixedly connected with bracket 7 respectively, on described anchor shaft 12, be arranged with tension pulley block 15, be beneficial to the degree of tension of the terraced steel rope of moment adjustment contracting, described first module ladder 14 front end both sides are respectively equipped with dead sheave 1 and stretch ladder rope fixed mount 2, both sides, rear end are respectively equipped with positioning pulley 10 and contracting ladder rope fixed mount 9, the front of the described first module ladder 14 relative reels 11 in lower surface is provided with one-level pulley erecting frame and secondary pulley erecting frame successively, one-level pulley erecting frame upper end is arranged with respectively one-level leading sheave 5 by middle mind-set both sides, secondary pulley erecting frame upper end is arranged with respectively secondary leading sheave 3 and the one-level terraced pulley 4 that contracts by middle mind-set both sides, described secondary leading sheave 3 and the one-level terraced pulley 4 that contracts coaxially arranges, described second unit ladder 13 rear portions are provided with pulley fixed link, described pulley fixed link front end is provided with stretches terraced angle pulley 6, rear end is provided with the terraced angle pulley 8 of contracting, stretch ladder rope and stretch out from reel 11 for described two strands, and lead by one-level leading sheave 5 and secondary leading sheave 3 respectively, below first module ladder 14 upwards around to first module ladder 14 sides, be wound around backward by dead sheave 1, then walk around and stretch terraced angle pulley 6, the terminal of stretching ladder rope is fixed on and is stretched on ladder rope fixed mount 2, described two strands of contracting ladder ropes stretch out from reel 11 respectively, and respectively by one-level contract terraced pulley 4 below first module ladder 14 around to first module ladder 14 sides, and be wound around backward, by being wound around forward again after positioning pulley 10, and be wound around backward extension by the terraced angle pulley 8 of contracting, the terminal of terraced steel rope of making to contract is fixed on contracting ladder rope fixed mount 9.
Claims (1)
1. a spool type aerial ladder telescoping mechanism, comprise ladder, pulley, stretch ladder rope and contracting ladder rope, described ladder is at least formed by first module ladder and the mutual sliding block joint of second unit ladder, it is characterized in that being provided with reel, bracket, anchor shaft and tension pulley block, described reel two ends are fixedly connected with first module ladder rear portion through bracket respectively, on described reel, be wound around two strands and stretch ladder rope and two strands of contracting ladder ropes, described two strands of contracting ladder ropes and two strands are stretched ladder and are restricted and arranged by middle mind-set bilateral symmetry, described reel front is provided with anchor shaft, anchor shaft two ends are fixedly connected with bracket respectively, on described anchor shaft, be arranged with tension pulley block, described first module ladder front end both sides are respectively equipped with dead sheave and stretch ladder rope fixed mount, both sides, rear end are respectively equipped with positioning pulley and contracting ladder rope fixed mount, the front of the relative reel in described first module ladder lower surface is provided with one-level pulley erecting frame and secondary pulley erecting frame successively, one-level pulley erecting frame upper end is arranged with respectively one-level leading sheave by middle mind-set both sides, secondary pulley erecting frame upper end is arranged with respectively secondary leading sheave and the one-level terraced pulley that contracts by middle mind-set both sides, the terraced pulley coaxle setting of contracting of described secondary leading sheave and one-level, described second unit ladder rear portion is provided with pulley fixed link, described pulley fixed link front end is provided with stretches terraced angle pulley, rear end is provided with the terraced angle pulley of contracting, stretch ladder rope and stretch out from reel for described two strands, and respectively by one-level leading sheave and secondary leading sheave guiding, below first module ladder upwards around to first module ladder side, be wound around backward by dead sheave, then walk around and stretch terraced angle pulley, the terminal of stretching ladder rope is fixed on and is stretched on ladder rope fixed mount, described two strands of contracting ladder ropes are extracted out respectively in reel, and respectively by one-level contract terraced pulley below first module ladder around to first module ladder side, and be wound around backward, by being wound around forward again after positioning pulley, and be wound around backward extension by the terraced angle pulley that contracts, the terminal of terraced steel rope of making to contract is fixed on the terraced fixed mount of contracting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320857533.2U CN203612862U (en) | 2013-12-24 | 2013-12-24 | Roll type aerial ladder telescopic mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320857533.2U CN203612862U (en) | 2013-12-24 | 2013-12-24 | Roll type aerial ladder telescopic mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203612862U true CN203612862U (en) | 2014-05-28 |
Family
ID=50765521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320857533.2U Expired - Fee Related CN203612862U (en) | 2013-12-24 | 2013-12-24 | Roll type aerial ladder telescopic mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203612862U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108910794A (en) * | 2018-09-10 | 2018-11-30 | 广西电网有限责任公司电力科学研究院 | A kind of high altitude operation transmission scaling ladder device |
-
2013
- 2013-12-24 CN CN201320857533.2U patent/CN203612862U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108910794A (en) * | 2018-09-10 | 2018-11-30 | 广西电网有限责任公司电力科学研究院 | A kind of high altitude operation transmission scaling ladder device |
| CN108910794B (en) * | 2018-09-10 | 2023-07-21 | 广西电网有限责任公司电力科学研究院 | Aerial ladder conveying device for aerial work |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 |