CN208327316U - A kind of novel extension ladder cylinder - Google Patents
A kind of novel extension ladder cylinder Download PDFInfo
- Publication number
- CN208327316U CN208327316U CN201820368193.XU CN201820368193U CN208327316U CN 208327316 U CN208327316 U CN 208327316U CN 201820368193 U CN201820368193 U CN 201820368193U CN 208327316 U CN208327316 U CN 208327316U
- Authority
- CN
- China
- Prior art keywords
- sealing
- inlet channel
- small column
- extension ladder
- column portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims description 23
- 238000009434 installation Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/0209—Telescopic
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/14—Ladders capable of standing by themselves
- E06C1/16—Ladders capable of standing by themselves with hinged struts which rest on the ground
- E06C1/20—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as poles
- E06C1/22—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as poles with extensible, e.g. telescopic, ladder parts or struts
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/14—Ladders capable of standing by themselves
- E06C1/24—Non-hinged free-standing ladders
- E06C1/28—Non-hinged free-standing ladders multi-part
- E06C1/30—Non-hinged free-standing ladders multi-part extensible, e.g. telescopic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3235—Constructional features of cylinders
- F16F9/3242—Constructional features of cylinders of cylinder ends, e.g. caps
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Abstract
The utility model discloses a kind of novel extension ladder cylinders, the big cylindrical portion including small column portion and positioned at small column subordinate portion, opposite on the outer wall in the small column portion to be equipped with buckle block.By using above scheme, the original screw connection of cylinder is changed to the clamping structure by buckling block, worker during installation directly pierces into the small column portion on cylinder in telescopic rod, is clamped so that card slot opposite on buckle block and telescopic rod inner wall is realized, convenient for operation, assembly efficiency is improved.
Description
Technical field
The utility model relates to extension ladder accessories field, in particular to a kind of novel extension ladder cylinder.
Background technique
Extension ladder is a kind of ladder that can be stretched and be shortened as fishing bar, is divided into engineering extension ladder and ring is flexible
Two kinds of ladder, cylinder are its internal one of important accessory.
Chinese patent notification number CN206111921U discloses a kind of extension ladder cylinder, including a staged cylindrical body,
By opening staged air passing hole on the face of great circle capital, opening the air inlet being connected to air passing hole in big cylindrical outer wall and passing through capping
The diaphragm seal cooperation being sealed in big air passing hole make the only air inlet of extension ladder cylinder can not outlet, and by being opened on cylinder body
One gas vent achievees the effect that the slow drop of safety.
Above-mentioned cylinder is functionally able to satisfy requirement, but in assembling process, after waiting cylinders to dispose, it is also necessary to screw pair
It is reinforced, and assembling process is more complicated, is influenced Assembling Production efficiency, is further improved.
Utility model content
The purpose of the utility model is to provide a kind of novel extension ladder cylinders, simple in assembly, can improve production work
Make efficiency.
The above-mentioned technical purpose of the utility model has the technical scheme that
A kind of novel extension ladder cylinder, the big cylindrical portion including small column portion and positioned at small column subordinate portion are described small
It is opposite on the outer wall of cylindrical portion to be equipped with buckle block.
By using above scheme, the original screw connection of cylinder is changed to the clamping structure by buckling block, Gong Ren
Directly the small column portion on cylinder is pierced into telescopic rod when installation, so that card slot opposite on buckle block and telescopic rod inner wall is real
It is now clamped, convenient for operation, improves assembly efficiency.
As a kind of improvement of the utility model, the connecting pin of the small column portion and big cylindrical portion radially opened it is main into
Gas channel, the two sides that main inlet channel is located in the small column portion symmetrically offer auxiliary inlet channel, the auxiliary inlet channel
It is arranged in parallel with main inlet channel, the buckle block is set on the outer wall of auxiliary inlet channel, the end face outside in the small column portion
Offer the gas vent being connected to main inlet channel, the end face outside of the big cylindrical portion is offered to be connected to main inlet channel
Air inlet.
By using above scheme, in air inlet, external air can be respectively from corresponding gas vent and air inlet
Into the sky that part of gas can also be formed between the main inlet channel of the cylinder of external extension bar bottom and external extension bar
Gap enters, and air inflow is increased, so that product is not in because air inflow leads to product victory inconvenient for use less in operation
The problem of.
As a kind of improvement of the utility model, sealing-plug is connected on the air inlet, the sealing-plug includes successively
Seal washer, sealing connecting rod and the sealing draw-in gear of connection, the seal washer are placed on the outside of big cylindrical portion, the seal washer
Outer diameter is greater than the outer diameter of air inlet, and the sealing connecting rod is arranged in air inlet, the cross section of the sealing connecting rod in cross,
The sealing draw-in gear is placed in main inlet channel, and the sealing draw-in gear is in inverted triangle shape.
By using above scheme, quickly sealing-plug can be packed into air inlet, it is easy for installation, accelerate work effect
Rate, the exhaust and convenient when extension ladder stretches do not influence air inlet when telescopic rod stretches.
As a kind of improvement of the utility model, the sealing-plug is made of rubber.
By using above scheme, the sealing effect of sealing-plug is good, and disassembly is easy, can directly with hand by sealing-plug from gas
It is detached from cylinder.
As a kind of improvement of the utility model, the end face outside of the big cylindrical portion is convexly equipped with annulated column, the gasket
Circle is slidably connected in annulated column.
By using above scheme, annulated column can play the role of guiding to sealing-plug, in exhaust, so that on sealing-plug
Seal washer can firmly block air inlet.
As a kind of improvement of the utility model, the first seal groove, the great circle are offered on small column portion outer ring
Column portion offers the second seal groove on outer ring.
By using above scheme, leakproofness is improved, solves leakage problem.
As a kind of improvement of the utility model, the periphery of the small column end surface is convexly equipped with a circle bulge loop, described convex
The inner wall of ring is tilted towards center from the outside to the core, and the convex block of triangle is symmetrically convexly equipped on the end face of the big cylindrical portion, described
The inclined-plane of convex block is tilted towards center from the outside to the core.
By using above scheme, after inside and outside telescopic rod collapses, the convex block on inside cylinder is resisted against the convex of outside cylinder
On ring, the impact resistance between interior outside cylinder can be improved, product service life is improved.
As a kind of improvement of the utility model, the upper end of the buckle block is equipped with guiding surface.
By using above scheme, when buckling in block insertion relative telescopic bar, guiding surface can play the work of guiding
With, so that buckle block is more easily inserted in telescopic rod, raising assembly efficiency.
In conclusion the utility model has the following beneficial effects:
1, buckle block clamping form assembly keeps cylinder assembly efficiency high；
2, air inflow is big, so that product use is more convenient；
3, sealing performance is high；
4, sealing-plug installation convenience, it is easy to operate, reduce enterprise's time cost.
Detailed description of the invention
Fig. 1 is a kind of axonometric drawing of novel extension ladder cylinder；
Fig. 2 is a kind of exploded view of novel extension ladder cylinder；
Fig. 3 is extension ladder stretched state diagram；
Fig. 4 is extension ladder contraction state schematic diagram.
In figure, 1, small column portion；2, big cylindrical portion；3, main inlet channel；4, auxiliary inlet channel；5, block is buckled；501, it leads
To inclined-plane；6, gas vent；7, bulge loop；8, air inlet；9, sealing-plug；901, seal washer；902, sealing connecting rod；903, sealing card
Head；10, annulated column；11, convex block；12, the first seal groove；13, the second seal groove；14, external extension bar；15, interior telescopic rod.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
Embodiment:
Referring to Fig. 1, a kind of novel extension ladder cylinder, including the great circle by small column portion 1 and positioned at 1 lower part of small column portion
The ontology that column portion 2 forms, has radially opened main inlet channel 3 in small column portion 1 and the connecting pin of big cylindrical portion, in small column portion
Auxiliary inlet channel 4 has symmetrically been opened in two sides on 1 positioned at main inlet channel 3, and auxiliary inlet channel 4 is parallel with main inlet channel 3 to be set
It sets, buckle block 5 is symmetrically offered on the outer wall of auxiliary inlet channel, only the inner side end of lower end and big cylindrical portion 2 is solid for buckle block 5
Fixed connection is also provided with guiding surface 501 in the upper end of buckle block 5.
The gas vent 6 being connected to main inlet channel 3 is offered at the end face outside center in small column portion 1, in small column portion 1
The periphery of end face outside be convexly equipped with a circle bulge loop 7, the inner wall of bulge loop 7 is tilted towards center from the outside to the core；In conjunction with Fig. 2, in great circle
The end face outside center in column portion 2 offers the air inlet 8 being connected to main inlet channel 3, and sealing-plug 9 is connected on air inlet 8, close
Blocking 9 is made of rubber, including sequentially connected seal washer 901, sealing connecting rod 902 and sealing draw-in gear 903, seal washer
901 are placed in big 2 outside of cylindrical portion, and the outer diameter of seal washer 901 is greater than the outer diameter of air inlet 8, in the end face outside of big cylindrical portion 2
On be also convexly equipped with the annulated column 10 slided for seal washer 901, sealing connecting rod 902 is arranged in air inlet 8, sealing connecting rod 902
In cross, sealing draw-in gear 903 is placed in main inlet channel 3 for cross section, and sealing draw-in gear 903 is in inverted triangle shape；In big cylindrical portion 2
End face outside on be symmetrically convexly equipped with the convex block 11 of triangle, the inclined-plane of convex block 1 is tilted towards center from the outside to the core.
Offer the first seal groove 12 on the outer ring in small column portion 1, the first seal groove 12 is located at main inlet channel 3, auxiliary
The outside of inlet channel 4 and buckle block 5, offers the second seal groove 13 on the outer ring of big cylindrical portion 2.
Referring to Fig. 3, when assembling cylinder, insertion sealing ring is covered in the first seal groove 12 and the second seal groove 13, and
Sealing-plug 9 is directly promoted in air inlet 8 and is clamped, worker can be directed at buckle block 5 later, and the small column portion 1 on cylinder is direct
It pierces into telescopic rod, is clamped so that the card slot on buckle block 5 and telescopic rod inner wall is realized, convenient for operation, improve assembly efficiency.
Referring to Fig. 3, when extension ladder is stretched, in the case where outer telescopic rod 14 is fixed, interior telescopic rod 15 is pulled outward
When stretching, the sealing-plug 9 in cylinder on interior telescopic rod 15 is moved backward with respect to cylinder, at this time the seal washer 901 on sealing-plug 9
Air inlet 8 is not blocked, the gas in the gas and interior telescopic rod 15 outside external extension bar 14 can be by corresponding at this time
Cylinder on gas vent 6 and air inlet 8 enter between external extension bar 14 and interior telescopic rod 15；Part of gas can be from outer
Gap between the main inlet channel 3 of the cylinder of 14 bottom of telescopic rod and external extension bar 14 enters；Due to cylinder and telescopic rod it
Between clamping there are certain gaps, there are also portion gas to pass through card from the outside of external extension bar 14 and interior telescopic rod 15
The clamping gap of button block 5 enters, so that air inflow is increased, convenient for the stretched operation of extension ladder.
Referring to fig. 4, when extension ladder being shunk, in the case where outer telescopic rod 14 is fixed, interior telescopic rod 15 is pushed away inside
Hui Shi, the sealing-plug 9 in cylinder on interior telescopic rod 15 is moved backward with respect to cylinder, so that the seal washer 901 on sealing-plug 9
Gas vent 8 is blocked, the air between external extension bar 14 and interior telescopic rod 15 can only pass through the cylinder on external extension bar 14 at this time
Interior gas vent 6 is discharged, and since gas vent 6 is smaller, interior telescopic rod 15 can be made slowly to shrink, avoid clamp hand；When inside and outside
After telescopic rod collapses completely, the convex block 11 on inside cylinder is resisted against on the bulge loop 7 of outside cylinder, can be improved anti-between interior outside cylinder
Impact improves product service life.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (7)
1. a kind of novel extension ladder cylinder, including small column portion (1) and it is located at the big cylindrical portion (2) of small column portion (1) lower part,
It is characterized in that, opposite on the outer wall of the small column portion (1) be equipped with buckle block (5)；
The connecting pin of the small column portion (1) and big cylindrical portion (2) has radially been opened main inlet channel (3), the small column portion
(1) two sides on positioned at main inlet channel (3) symmetrically offer auxiliary inlet channel (4), the auxiliary inlet channel (4) and main air inlet
Channel (3) is arranged in parallel, and buckle block (5) is set on the outer wall of auxiliary inlet channel (4), the outside of the small column portion (1)
End face offers the gas vent (6) being connected to main inlet channel (3), and the end face outside of the big cylindrical portion (2) offers and master
The air inlet (8) of inlet channel (3) connection.
2. a kind of novel extension ladder cylinder according to claim 1, which is characterized in that be clamped on the air inlet (8)
Have sealing-plug (9), the sealing-plug (9) includes sequentially connected seal washer (901), sealing connecting rod (902) and sealing draw-in gear
(903), the seal washer (901) is placed on the outside of big cylindrical portion (2), and the outer diameter of the seal washer (901) is greater than air inlet
(8) outer diameter, the sealing connecting rod (902) are arranged in air inlet (8), and the cross section of the sealing connecting rod (902) is in cross
Type, the sealing draw-in gear (903) are placed in main inlet channel (3), and the sealing draw-in gear (903) is in inverted triangle shape.
3. a kind of novel extension ladder cylinder according to claim 2, which is characterized in that the sealing-plug (9) is by rubber
It is made.
4. a kind of novel extension ladder cylinder according to claim 3, which is characterized in that outside the big cylindrical portion (2)
Side end face is convexly equipped with annulated column (10), and the seal washer (901) is slidably connected in annulated column (10).
5. a kind of novel extension ladder cylinder according to claim 2, which is characterized in that small column portion (1) outer ring
On offer the first seal groove (12), offer the second seal groove (13) on big cylindrical portion (2) outer ring.
6. a kind of novel extension ladder cylinder according to claim 1, which is characterized in that small column portion (1) end face
Periphery be convexly equipped with a circle bulge loop (7), the inner wall of the bulge loop (7) is tilted towards center from the outside to the core, the big cylindrical portion (2)
The convex block (11) of triangle is symmetrically convexly equipped on end face, the inclined-plane of the convex block (11) is tilted towards center from the outside to the core.
7. a kind of novel extension ladder cylinder according to claim 1, which is characterized in that the upper end of buckle block (5)
Equipped with guiding surface (501).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820368193.XU CN208327316U (en) | 2018-03-20 | 2018-03-20 | A kind of novel extension ladder cylinder |
| DE202018101804.3U DE202018101804U1 (en) | 2018-03-20 | 2018-04-03 | New air cylinder for a fold-out ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820368193.XU CN208327316U (en) | 2018-03-20 | 2018-03-20 | A kind of novel extension ladder cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208327316U true CN208327316U (en) | 2019-01-04 |
Family
ID=63525932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820368193.XU Active CN208327316U (en) | 2018-03-20 | 2018-03-20 | A kind of novel extension ladder cylinder |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN208327316U (en) |
| DE (1) | DE202018101804U1 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206111921U (en) | 2016-07-06 | 2017-04-19 | 董佐明 | Extension ladder cylinder |
-
2018
- 2018-03-20 CN CN201820368193.XU patent/CN208327316U/en active Active
- 2018-04-03 DE DE202018101804.3U patent/DE202018101804U1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE202018101804U1 (en) | 2018-08-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A new cylinder for telescopic ladder Effective date of registration: 20220725 Granted publication date: 20190104 Pledgee: Pan'an sub branch of Zhejiang Chouzhou Commercial Bank Co.,Ltd. Pledgor: Zhejiang mingfeng industry & trade Co.,Ltd. Registration number: Y2022330001512 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20190104 Pledgee: Pan'an sub branch of Zhejiang Chouzhou Commercial Bank Co.,Ltd. Pledgor: Zhejiang mingfeng industry & trade Co.,Ltd. Registration number: Y2022330001512 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A new type of cylinder for telescopic ladders Granted publication date: 20190104 Pledgee: Pan'an sub branch of Zhejiang Chouzhou Commercial Bank Co.,Ltd. Pledgor: Zhejiang mingfeng industry & trade Co.,Ltd. Registration number: Y2024330000978 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |