CN205778458U - Elliptical tube extension ladder - Google Patents
Elliptical tube extension ladder Download PDFInfo
- Publication number
- CN205778458U CN205778458U CN201620533147.1U CN201620533147U CN205778458U CN 205778458 U CN205778458 U CN 205778458U CN 201620533147 U CN201620533147 U CN 201620533147U CN 205778458 U CN205778458 U CN 205778458U
- Authority
- CN
- China
- Prior art keywords
- bench
- armrest
- circumferential side
- extension ladder
- tube extension
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a kind of elliptical tube extension ladder, including several bench, each bench includes two armrest parts respectively and connects the stampeding section of two armrest parts, two armrest parts of each lower section bench insert in two armrest parts being socketed on bench adjacent and above, described armrest part is oval pipe, and outside the end inserting end of two armrest parts of each lower section bench, bulging becomes oval tube expansion；The inner circumferential side near end that is inserted into of two armrest parts of bench is provided with backstop adjacent and above, and described oval tube expansion can be mounted in described backstop.This utility model simple in construction, it is simple to implement, greatly reduce the process costs of elliptical tube extension ladder, can make the elliptical tube extension ladder with preferably gripping non-skid property promote the use of on a large scale.
Description
Technical field
This utility model relates to a kind of extension ladder, is specifically related to a kind of elliptical tube extension ladder.
Background technology
Extension ladder is commonly used to hang from top to bottom the place of use, and such as, on ships and light boats, ships and light boats person jumps for convenience
Water, swimming or operation, be generally equipped with extension ladder, in prior art, sees Fig. 1, and extension ladder includes several bench, each
Bench includes two armrest parts 1 respectively and connects the stampeding section 2 of two armrest parts, and two armrest parts of each lower section bench insert and are socketed on
Adjacent and above in two armrest parts of bench, two armrest parts of lower section bench insert in two armrest parts being socketed on bench adjacent and above
Structure: seeing Fig. 2, the end outer circumferential side inserting end of two armrest parts of each lower section bench is provided with flange 8, adjacent and above ladder
The inner circumferential side, end being inserted into end of section is provided with backstop, and flange is mounted in backstop.But, due to the limitation of flanging process, this
The armrest part of the extension ladder planting structure is usually pipe, and process costs cost performance is good, but when armrest part is elliptical tube, flange work
Skill is relatively costly, causes the production cost of whole extension ladder to be difficult to reduce；Make that there is the ellipse preferably gripping non-skid property
Pipe extension ladder cannot be promoted use.
Summary of the invention
In order to solve above-mentioned technical problem, the utility model proposes a kind of elliptical tube extension ladder, simple in construction, it is simple to real
Execute, greatly reduce the process costs of elliptical tube extension ladder, can make that there is the elliptical tube extension ladder preferably gripping non-skid property
Son is promoted the use of on a large scale.
The technical solution of the utility model is achieved in that
A kind of elliptical tube extension ladder, including several bench, each bench includes that two armrest parts and connection two are held up respectively
The stampeding section of hand, two armrest parts of each lower section bench insert and are socketed in two armrest parts of bench adjacent and above, described in hold up
Hand is oval pipe, and outside the end inserting end of two armrest parts of each lower section bench, bulging becomes oval tube expansion；Adjacent and above
The inner circumferential side near end that is inserted into of two armrest parts of bench is provided with backstop, and described oval tube expansion can be mounted in described backstop.
Further, the inner male part that described backstop is formed by the inside slot rolling of armrest part outer circumferential side forms.
Further, two clinch, two described clinch and two armrest part pivot joints of the top bench, institute are also included
State clinch side and be formed with blocking arm, described clinch when described armrest part rotates set angle, described blocking arm backstop in
Described armrest part.
Further, the side, face of trampling of described stampeding section is inclined upwardly set angle.
Further, the end inserting end of each lower section bench is installed with counterpart, the outer circumferential side tool of described counterpart
Have an anti-skidding effect, and with the inner circumferential side CONTACT WITH FRICTION of described armrest part.
Further, described counterpart is a stopper, and described stopper one end is fixed by socket in the insertion of described lower section bench
In end, the circumferential lateral surface of the other end has an anti-skidding effect, and with the inner circumferential side CONTACT WITH FRICTION of described armrest part.
Further, described counterpart is a ring, the insertion end of the inner circumferential side of described ring and described lower section bench
Outer circumferential side is fixing to be connected, and the outer circumferential side of described ring has an anti-skidding effect, and with the inner circumferential side CONTACT WITH FRICTION of described armrest part.
The beneficial effects of the utility model are: using expansion tube process, the end that each lower section bench is inserted end is carried out
The most swollen, form oval tube expansion, use slot rolling technique, being inserted into of two armrest parts of bench adjacent and above is held neighbouring inwardly rolling
Groove, forms backstop, by coordinating of oval tube expansion and backstop, it is achieved the flexible function mounted；Simple in construction, it is simple to implement, greatly
Reduce greatly the process costs of elliptical tube extension ladder, can make that there is the big model of elliptical tube extension ladder preferably gripping non-skid property
Enclose and promote the use of.It is also preferred that the left the end inserting end of each lower section bench is installed with counterpart, the outer circumferential side of counterpart has anti-
Sliding effect, and with the inner circumferential side CONTACT WITH FRICTION of armrest part.So, owing to counterpart has anti-skidding effect, have anti-at counterpart
Under the effect of the frictional force between the sliding outer circumferential side of effect and the inner circumferential side of armrest part, each bench of ladder will not be in the effect of gravity
Under open, external force can only be relied on just can to open, therefore, it can be prevented effectively from each bench of ladder skid off when opening dangerous because of
Element, meanwhile, when opening ladder under external force, under the effect of above-mentioned frictional force, the armrest part of lower section bench and top ladder
The armrest part of section closely cooperates, when rotating ladder, it is possible to effectively solve spacious dynamic the asking produced because of each bench matching loose
Topic.
Accompanying drawing explanation
Fig. 1 is prior art extension ladder structural representation (during the condensation of each bench)；
Fig. 2 is structure for amplifying schematic diagram at A in Fig. 1；
Fig. 3 is this utility model elliptical tube extension ladder one viewing angle constructions schematic diagram (during the condensation of each bench)；
Fig. 4 is schematic cross-section at B in Fig. 3；
Fig. 5 is structure for amplifying schematic diagram at C in Fig. 3；
Fig. 6 is another viewing angle constructions schematic diagram of this utility model elliptical tube extension ladder (during the condensation of each bench)；
Fig. 7 is that in this utility model, oval tube expansion coordinates schematic diagram with backstop mounting；
In conjunction with accompanying drawing, make the following instructions:
1 armrest part 2 stampeding section
3 oval tube expansion 4 backstops
5 slot rolling 6 clinch
7 blocking arm 8 flange
Detailed description of the invention
In order to be more clearly understood that technology contents of the present utility model, describe in detail especially exemplified by following example, its mesh
Be only that and be best understood from content of the present utility model and unrestricted protection domain of the present utility model.
As shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 7, a kind of elliptical tube extension ladder, including several bench, each bench is respectively
Including two armrest parts 1 and the stampeding section 2 of connection two armrest parts, two armrest parts of each lower section bench insert and are socketed on adjacent and above
In two armrest parts of bench, described armrest part is oval pipe, outside the end inserting end of two armrest parts of each lower section bench
Bulging becomes oval tube expansion 3；The inner circumferential side near end that is inserted into of two armrest parts of bench is provided with backstop 4, described ellipse adjacent and above
Tube expansion can be mounted in described backstop.So, use expansion tube process, each lower section bench is inserted outside the end of end carries out
Swollen, form oval tube expansion, by coordinating of oval tube expansion and backstop, it is achieved that the flexible function mounted；Simple in construction, it is simple to real
Execute, greatly reduce the process costs of elliptical tube extension ladder, can make that there is the elliptical tube extension ladder preferably gripping non-skid property
Son is promoted the use of on a large scale.
Preferably, the inner male part that described backstop is formed by the inside slot rolling of armrest part outer circumferential side 5 forms.So, rolling is used
Groove technique, holds neighbouring inwardly slot rolling to being inserted into of two armrest parts of bench adjacent and above, can form backstop.
Preferably, see Fig. 6, also include two clinch 6, two described clinch and two armrest parts of the top bench
Pivot joint, described clinch side is formed with blocking arm 7, described clinch when described armrest part rotates set angle, described gear
Arm backstop is in described armrest part.So, fixing it is connected by what clinch can realize between extension ladder with other equipment, logical
Cross blocking arm backstop armrest part, can position when rotating 90 degree, each bench is hung.
Preferably, the side, face of trampling of described stampeding section is inclined upwardly set angle, to facilitate user of service to trample.
Preferably, the end inserting end of each lower section bench is installed with counterpart, and the outer circumferential side of described counterpart has
Anti-skidding effect, and with the inner circumferential side CONTACT WITH FRICTION of described armrest part.So, owing to counterpart has anti-skidding effect, at counterpart
Having under the effect of the frictional force between the outer circumferential side of anti-skidding effect and the inner circumferential side of armrest part, each bench of ladder will not be at gravity
Effect under open, external force can only be relied on just can to open, therefore, it can be prevented effectively from each bench of ladder and skid off when opening not
Safety factors, meanwhile, when opening ladder under external force, under the effect of above-mentioned frictional force, the armrest part of lower section bench with
The armrest part of top bench closely cooperates, when rotating ladder, it is possible to it is spacious that effective solution produces because of each bench matching loose
Dynamic problem.
Preferably, described counterpart is a stopper, and described stopper one end is fixed by socket in the insertion end of described lower section bench
In, the circumferential lateral surface of the other end has an anti-skidding effect, and with the inner circumferential side CONTACT WITH FRICTION of described armrest part.
Preferably, described counterpart is a ring, and the inner circumferential side of described ring is inserted outside end with described lower section bench
Week, side fixing connected, and the outer circumferential side of described ring has an anti-skidding effect, and with the inner circumferential side CONTACT WITH FRICTION of described armrest part.
Above example is referring to the drawings, is described in detail preferred embodiment of the present utility model.The skill of this area
Art personnel by carrying out the amendment on various forms or change to above-described embodiment, but without departing substantially from the feelings of essence of the present utility model
Under condition, all fall within protection domain of the present utility model.
Claims (7)
1. an elliptical tube extension ladder, including several bench, each bench includes that two armrest parts (1) and connection two are held up respectively
The stampeding section (2) of hand, two armrest parts of each lower section bench insert in two armrest parts being socketed on bench adjacent and above, and it is special
Levying and be: described armrest part is oval pipe, outside the end inserting end of two armrest parts of each lower section bench, bulging becomes ellipse
Tube expansion (3)；The inner circumferential side near end that is inserted into of two armrest parts of bench is provided with backstop (4), described oval tube expansion energy adjacent and above
Enough it is mounted in described backstop.
Elliptical tube extension ladder the most according to claim 1, it is characterised in that: described backstop is inside by armrest part outer circumferential side
The inner male part composition that slot rolling (5) is formed.
Elliptical tube extension ladder the most according to claim 1, it is characterised in that: also include two clinch (6), described in two
Clinch and two armrest part pivot joints of the top bench, described clinch side is formed with blocking arm (7), and described clinch is relative
When described armrest part rotates set angle, described blocking arm backstop is in described armrest part.
Elliptical tube extension ladder the most according to claim 1, it is characterised in that: the face of trampling of described stampeding section is on the side
Tilt set angle.
Elliptical tube extension ladder the most according to claim 1, it is characterised in that: the end inserting end of each lower section bench
Being installed with counterpart, the outer circumferential side of described counterpart has an anti-skidding effect, and with the inner circumferential side CONTACT WITH FRICTION of described armrest part.
Elliptical tube extension ladder the most according to claim 5, it is characterised in that: described counterpart is a stopper, described plug
Sub-one end is fixed by socket in the insertion end of described lower section bench, and the circumferential lateral surface of the other end has anti-skidding effect, and with described
The inner circumferential side CONTACT WITH FRICTION of armrest part.
Elliptical tube extension ladder the most according to claim 5, it is characterised in that: described counterpart is a ring, described circle
The inner circumferential side of ring is fixing with the outer circumferential side inserting end of described lower section bench to be connected, and the outer circumferential side of described ring has anti-skidding work
With, and with the inner circumferential side CONTACT WITH FRICTION of described armrest part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620533147.1U CN205778458U (en) | 2016-06-02 | 2016-06-02 | Elliptical tube extension ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620533147.1U CN205778458U (en) | 2016-06-02 | 2016-06-02 | Elliptical tube extension ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205778458U true CN205778458U (en) | 2016-12-07 |
Family
ID=58136122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620533147.1U Withdrawn - After Issue CN205778458U (en) | 2016-06-02 | 2016-06-02 | Elliptical tube extension ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205778458U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888528A (en) * | 2016-06-02 | 2016-08-24 | 昆山元达精密机电工业有限公司 | Oval pipe telescopic ladder |
-
2016
- 2016-06-02 CN CN201620533147.1U patent/CN205778458U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888528A (en) * | 2016-06-02 | 2016-08-24 | 昆山元达精密机电工业有限公司 | Oval pipe telescopic ladder |
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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 |
Granted publication date: 20161207 Effective date of abandoning: 20180515 |
|
| AV01 | Patent right actively abandoned |