CN205314907U - Extension ladder with automatic locking and unblock function - Google Patents
Extension ladder with automatic locking and unblock function Download PDFInfo
- Publication number
- CN205314907U CN205314907U CN201620016320.0U CN201620016320U CN205314907U CN 205314907 U CN205314907 U CN 205314907U CN 201620016320 U CN201620016320 U CN 201620016320U CN 205314907 U CN205314907 U CN 205314907U
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- Prior art keywords
- ladder
- lock
- frame
- terraced
- ladder frame
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- Withdrawn - After Issue
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- 238000003466 welding Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims 1
- 230000008602 contraction Effects 0.000 description 7
- 230000006870 function Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008828 contractile function Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- Ladders (AREA)
Abstract
The utility model discloses an extension ladder with automatic locking and unblock function. It is the same along length direction nested a plurality of structures in proper order at extension ladder, the terraced unit of size gradual change, in arbitrary two adjacent terraced units, the terraced leg of ladder frame passes through the same liftoff connection of locking means detachable of structure after upward cup jointing in the terraced leg of descending stair frame, locking means includes the locking cuphead pilotage, the locking spring leaf, locking switch clamp plate and locking switch spring, the both sides of going up the terraced leg inner wall of ladder frame all are connected with the locking spring leaf, the fixed locking cuphead pilotage that is equipped with in locking spring leaf top, the round hole that locking cuphead pilotage level was passed on ladder frame and the descending stair frame lateral wall in proper order stretches out, locking switch spring overlaps at the extension of locking cuphead pilotage and connects locking switch clamp plate. The utility model discloses an extension ladder can realize automatic locking, unblock, and easy operation is convenient.
Description
Technical field
The utility model relates to a kind of flexible ladder, specifically provide a kind of have automatically lock only and the flexible ladder of unlocking function, energy quick-expansion and unblock.
Background technology
At present. Domestic and international flexible ladder major part is identical by structure, the terraced tuple that size is successively decreased, and the lock locking apparatus between adjacent ladder unit is then combined by spring and tumbler pin. At stretching, extension and the telescopic ladder period of the day from 11 p.m. to 1 a.m, staff needs the every one-level lock locking apparatus of manual operations, considerably increases duration of service, reduces working efficiency.
Practical novel content
Can not automatically locking only to improve existing flexible ladder, it is achieved the problem of Quick extension and contraction, the utility model provides a kind of to be had lock automatically and only and the flexible ladder of unlocking function, fully saves time, it is to increase efficiency.
The utility model realizes the technical scheme that its practical novel object adopts:
Nested multiple structure is identical successively along its length, the terraced unit of size gradual change at flexible ladder for the utility model, and the terraced frame of each ladder unit is formed by fixedly connecting with H type structure primarily of the stull between two terraced legs and two terraced legs; In arbitrary adjacent two terraced unit, between the both sides ladder leg that lower ladder frame and upper ladder frame connect, be equipped with lock locking apparatus, the terraced leg of upper ladder frame be socketed in the terraced leg of lower ladder frame after by lock locking apparatus that structure is identical separable connect.
Two described lock locking apparatus are installed on the zygomorphy ground of each ladder leg described.
Described lock locking apparatus is arranged on stull close beneath, lock locking apparatus comprises lock only cup head pin, lock is spring piece only, lockup switch pressing plate and lockup switch spring, the both sides of upper ladder frame ladder leg inwall are all connected with lock only spring piece, lock is only fixedly attached to ladder frame ladder leg inwall in spring piece bottom, lock is only fixed with lock only cup head pin in spring piece top, upper ladder frame and lower ladder frame sidewall all have circular hole, the outer side wall at lower ladder frame circular hole place is provided with the lockup switch spring with lower ladder frame sidewall circular hole coaxial and lockup switch pressing plate, lockup switch spring one end is connected to the sidewall at lower ladder frame circular hole place, the lockup switch spring the other end is connected to lockup switch pressing plate, lockup switch pressing plate side be articulated and connected lower ladder frame sidewall, the lock circular hole that only cup head pin level is passed on upper ladder frame and lower ladder frame sidewall successively stretches out, lockup switch spring is enclosed within the extension that lock stops cup head pin.
Described lock is only fixedly connected with upper ladder frame ladder leg inwall by bolt or welding spring piece bottom.
Described lock only stops cup head pin by bolt or welding with lock and is fixedly connected with in spring piece top.
Running fit between the terraced leg of described upper ladder frame and the terraced leg of lower ladder frame.
It is round end that described lock stops the extension end face of cup head pin, and other end is tack; Described flexible ladder is when lockup state, and only the round end curved surface of cup head pin and the friendship line of cylinder stretch out in outside lower ladder frame sidewall described lock.
Described flexible ladder is when lockup state, and only cup head pin is through upper ladder frame ladder leg sidewall circular hole and lower ladder frame ladder leg upper end circular hole for lock, and only cup head pin, upper ladder frame sidewall circular hole, lower ladder frame sidewall circular hole and lockup switch spring are coaxial for lock.
Compared with background technology, the beneficial effects of the utility model:
1, the utility model is simple to operation, it is possible to realize only automatically locking and the function of unblock, Quick extension and contraction. In the utility model, staff only need to mention certain ladder frame component, and lock locking apparatus is only locked automatically, can realize Quick extension; Staff only need to press lockup switch device, and lock locking apparatus can unlock automatically according to level, can realize quick contraction. The trouble of operable lock locking apparatus step by step can be saved, save time, it is to increase efficiency.
2, the utility model lock locking apparatus structure is simply effective. Two groups of short round end lock shotpin+spring piece+bolt assemblies are adopted to substitute traditional spring+long shearing pin. In flexible ladder, the shearing force that lock shotpin is mainly subject to two terraced frame relative movements and bring in the part contacted with ladder frame, forces are applied at other positions, short round end lock shotpin+spring piece+bolt assembly is utilized to be possible to prevent the lock shotpin rollover of short round end, realize latch functions, adopt symmetrical decoration form, it is to increase reliability.
Accompanying drawing explanation
Fig. 1 is extended configuration structure diagram of the present utility model;
Fig. 2 is extended configuration CONSTRUCTED SPECIFICATION figure of the present utility model;
Fig. 3 is contraction schedule structure diagram of the present utility model;
Fig. 4 is contraction schedule mechanical details figure of the present utility model.
In figure: 1, lower ladder frame, 2, upper ladder frame, 3, lock only cup head pin, 4, lock only spring piece, 5, bolt, 6, lockup switch pressing plate, 7, lockup switch spring.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
As shown in Figure 1, Figure 3, nested multiple structure is identical successively along its length, the terraced unit of size gradual change at flexible ladder for the utility model, and the terraced frame of each ladder unit is formed by fixedly connecting with H type structure primarily of the stull between two terraced legs and two terraced legs; In arbitrary adjacent two terraced unit, between the both sides ladder leg that lower ladder frame 1 and upper ladder frame 2 connect, be equipped with lock locking apparatus, the terraced leg of upper ladder frame 2 be socketed in the terraced leg of lower ladder frame 1 after by lock locking apparatus that structure is identical separable connect.
As shown in Figure 2 and Figure 4, lock locking apparatus is arranged on stull close beneath, lock locking apparatus comprises lock, and only cup head pin 3, lock stop spring piece 4, lockup switch pressing plate 6 and lockup switch spring 7, the both sides of upper ladder frame 2 ladder leg inwall are all connected with lock only spring piece 4, lock is only fixedly attached to ladder frame 2 ladder leg inwall in spring piece 4 bottom, lock is only fixed with lock only cup head pin 3 in spring piece 4 top, the lock of both sides only cup head pin 3 and lock only spring piece 4 be arranged symmetrically with; Upper ladder frame 2 and lower ladder frame 1 sidewall all have circular hole, the outer side wall at lower ladder frame 1 circular hole place is provided with the lockup switch spring 7 with lower ladder frame 1 sidewall circular hole coaxial and lockup switch pressing plate 6, lockup switch spring 7 one end is connected to the sidewall at lower ladder frame 1 circular hole place, lockup switch spring 7 the other end is connected to lockup switch pressing plate 6, lockup switch pressing plate 6 side be articulated and connected lower ladder frame 1 sidewall, lock stops cup head pin 3 level and stretches out through the circular hole on upper ladder frame 2 and lower ladder frame 1 sidewall successively, and lockup switch spring 7 is enclosed within the extension that lock stops cup head pin 3.Above-mentioned two lock locking apparatus are installed on the zygomorphy ground of each ladder leg, assemble secondary ladder frame successively according to this kind of method.
Lock is only fixedly connected with upper ladder frame 2 ladder leg inwall by bolt 5 or welding spring piece 4 bottom. Lock only stops cup head pin 3 by bolt 5 or welding with lock and is fixedly connected with in spring piece 4 top. Running fit between the terraced leg of upper ladder frame 2 and the terraced leg of lower ladder frame 1, can move freely along ladder leg direction between ladder frame when ensureing to shrink.
It is round end that lock stops the extension end face of cup head pin 3, and other end is tack. When connecting with bolt 5, just there is threaded hole; When being welded to connect, it is not necessary to threaded hole.
Flexible ladder is when lockup state, stop cup head pin by lock and lock the lock locking apparatus that only spring piece forms and be in lockup state, lock stops cup head pin 3 through upper ladder frame 2 ladder leg sidewall circular hole and lower ladder frame 1 terraced leg upper end circular hole, only cup head pin 3, upper ladder frame 2 sidewall circular hole, lower ladder frame 1 sidewall circular hole and lockup switch spring 7 are coaxial for lock, the friendship line of round end curved surface and cylinder that lock stops cup head pin 3 stretches out in outside lower ladder frame 1 sidewall, and it stretches out the reliability that partial-length can improve flexible ladder latch functions.
When released state, lock stops cup head pin and shrinks to ladder inboard leg, and only spring piece is bending for lock.
Stretching, extension principle of the present utility model and process be:
When flexible ladder be in contraction schedule need stretch time, when mentioning terraced frame and the upper end thereof of the top, terraced frame and the lock locking apparatus thereof of the top move, when the lock at the terraced frame place of the top stops the circular hole that cup head pin arrives the 2nd terraced frame upper end, bending lock is spring piece recovery original state only, eject cup head pin, then realize the stretching, extension between the terraced frame of the top and the 2nd terraced frame; Continue the terraced frame to the top firmly upwards to carry, drive the 2nd terraced frame and lock locking apparatus thereof to move, the same, the stretching, extension between the 2nd terraced frame and the 3rd terraced frame can be realized, achieve the stretching, extension between follow-up ladder frame with this.
Analogize with this, can according to working condition, the terraced frame of fixing bottom, firmly mentions a certain ladder frame of section in the middle of wherein, then terraced frame between the two can stretch, and lock locking apparatus only then can be locked automatically, finally as shown in Figure 1 and Figure 2.
Contraction principle of the present utility model and process be:
When flexible ladder be in extended configuration need to shrink time, it is necessary to press the lockup switch pressing plate being fixed on lower ladder frame ladder leg, compression lockup switch spring simultaneously, extruding lock only cup head pin picture ladder inboard leg move, lock only spring piece flexural deformation; When the round end place locking only cup head pin starts lower than lower ladder frame ladder leg outside surface, can there is a small amount of relative movement relative to upper ladder frame in lower ladder frame, and lower ladder frame ladder leg wall continues to ladder inboard leg extruding lock only cup head pin along round end curved surface; When the round end place locking only cup head pin leg internal surface terraced lower than lower ladder frame, upper ladder frame and upper module thereof can move down jointly, shrink.
When the lock locking apparatus of upper ladder frame ladder leg upper end moves to lower ladder frame ladder leg top, lower ladder frame ladder leg wall is along the round end curved surface in lock locking apparatus to ladder inboard leg extruding lock only cup head pin, when round end curved surface starts lower than upper ladder frame ladder leg outside surface, upper ladder frame ladder leg wall continues to ladder inboard leg extruding along round end curved surface; When the round end curved surface locking only cup head pin is lower than upper ladder frame ladder leg internal surface, then its upper module of terraced frame component of top can move down jointly, shrinks.
Analogizing with this, each lock locking apparatus all can unlock according to the method that lock locking apparatus unlocks successively, it is achieved ladder contractile function, finally as shown in Figure 3, Figure 4.
Claims (8)
1. one kind has automatic only lock and the flexible ladder of unlocking function, it is characterized in that: at flexible ladder, nested multiple structure is identical successively along its length, the terraced unit of size gradual change, the terraced frame of each ladder unit is formed by fixedly connecting with H type structure primarily of the stull between two terraced legs and two terraced legs; In arbitrary adjacent two terraced unit, be equipped with lock locking apparatus between the both sides ladder leg that lower ladder frame (1) and upper ladder frame (2) connect, the terraced leg of upper ladder frame (2) be socketed in the terraced leg of lower terraced frame (1) after by lock locking apparatus that structure is identical separable connect.
2. according to claim 1 a kind of have automatically that lock is only and the flexible ladder of unlocking function, it is characterised in that: zygomorphy ground installation two described lock locking apparatus of each ladder leg described.
3. according to claim 1 a kind of have automatically that lock is only and the flexible ladder of unlocking function, it is characterized in that: described lock locking apparatus is arranged on stull close beneath, lock locking apparatus comprises lock only cup head pin (3), lock is spring piece (4) only, lockup switch pressing plate (6) and lockup switch spring (7), the both sides of upper ladder frame (2) ladder leg inwall are all connected with lock only spring piece (4), lock is only fixedly attached to ladder frame (2) ladder leg inwall in spring piece (4) bottom, lock is only fixed with lock only cup head pin (3) in spring piece (4) top, upper ladder frame (2) and lower ladder frame (1) sidewall all have circular hole, the outer side wall at lower ladder frame (1) circular hole place is provided with the lockup switch spring (7) with lower ladder frame (1) sidewall circular hole coaxial and lockup switch pressing plate (6), lockup switch spring (7) one end is connected to the sidewall at lower ladder frame (1) circular hole place, lockup switch spring (7) the other end is connected to lockup switch pressing plate (6), lockup switch pressing plate (6) side be articulated and connected lower ladder frame (1) sidewall, the lock circular hole that only cup head pin (3) level is passed on upper ladder frame (2) and lower ladder frame (1) sidewall successively stretches out, lockup switch spring (7) is enclosed within the extension that lock stops cup head pin (3).
4. according to claim 3 a kind of have automatically that lock is only and the flexible ladder of unlocking function, it is characterised in that: described lock is only fixedly connected with the upper terraced leg inwall of terraced frame (2) by bolt (5) or welding spring piece (4) bottom.
5. according to claim 3 a kind of have automatically that lock is only and the flexible ladder of unlocking function, it is characterised in that: described lock only stops cup head pin (3) by bolt (5) or welding with locking and is fixedly connected with in spring piece (4) top.
6. according to claim 1 a kind of have automatically that lock is only and the flexible ladder of unlocking function, it is characterised in that: running fit between the terraced leg of described upper ladder frame (2) and the terraced leg of lower terraced frame (1).
7. according to claim 1 a kind of have automatically that lock is only and the flexible ladder of unlocking function, it is characterised in that: it is round end that described lock stops the extension end face of cup head pin (3), and other end is tack; Described flexible ladder is when lockup state, and only the round end curved surface of cup head pin (3) and the friendship line of cylinder stretch out in outside lower ladder frame (1) sidewall described lock.
8. according to claim 1 a kind of have automatically that lock is only and the flexible ladder of unlocking function, it is characterized in that: described flexible ladder is when lockup state, only cup head pin (3) is through upper ladder frame (2) ladder leg sidewall circular hole and lower ladder frame (1) ladder leg upper end circular hole for lock, and only cup head pin (3), upper ladder frame (2) sidewall circular hole, lower ladder frame (1) sidewall circular hole and lockup switch spring (7) are coaxial for lock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620016320.0U CN205314907U (en) | 2016-01-08 | 2016-01-08 | Extension ladder with automatic locking and unblock function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620016320.0U CN205314907U (en) | 2016-01-08 | 2016-01-08 | Extension ladder with automatic locking and unblock function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205314907U true CN205314907U (en) | 2016-06-15 |
Family
ID=56201220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620016320.0U Withdrawn - After Issue CN205314907U (en) | 2016-01-08 | 2016-01-08 | Extension ladder with automatic locking and unblock function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205314907U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443025A (en) * | 2016-01-08 | 2016-03-30 | 浙江大学 | Extension ladder with functions of automatic locking and unlocking |
| CN107083914A (en) * | 2017-05-18 | 2017-08-22 | 王洪全 | The protection bar assembly and screen window of a kind of screen window |
| CN108360971A (en) * | 2018-01-23 | 2018-08-03 | 庞志兰 | A kind of multifunctional ladder and its application method |
| CN110344746A (en) * | 2019-04-29 | 2019-10-18 | 珠海五八科技有限公司 | A kind of convenient and fast extension ladder of operation |
-
2016
- 2016-01-08 CN CN201620016320.0U patent/CN205314907U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443025A (en) * | 2016-01-08 | 2016-03-30 | 浙江大学 | Extension ladder with functions of automatic locking and unlocking |
| CN107083914A (en) * | 2017-05-18 | 2017-08-22 | 王洪全 | The protection bar assembly and screen window of a kind of screen window |
| CN108360971A (en) * | 2018-01-23 | 2018-08-03 | 庞志兰 | A kind of multifunctional ladder and its application method |
| CN108360971B (en) * | 2018-01-23 | 2020-09-18 | 浙江蓝特新能源科技股份有限公司 | Multifunctional ladder and using method thereof |
| CN110344746A (en) * | 2019-04-29 | 2019-10-18 | 珠海五八科技有限公司 | A kind of convenient and fast extension ladder of operation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160615 Effective date of abandoning: 20170412 |