CN213510392U

CN213510392U - Extension ladder with stable structure and herringbone ladder with same

Info

Publication number: CN213510392U
Application number: CN202021079462.4U
Authority: CN
Inventors: 俞米英
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-12
Filing date: 2020-06-12
Publication date: 2021-06-22
Anticipated expiration: 2030-06-12

Abstract

The utility model discloses an extension ladder with a stable structure and a herringbone ladder with the extension ladder, which comprises a ladder frame, an extension joint and a stable joint, wherein the ladder frame is composed of ladder sections which are sleeved one by one, the innermost ladder section is positioned at the top of the ladder frame, and the outermost ladder section is positioned at the bottom of the ladder frame; the telescopic joint is fixed at the top of each ladder section except the innermost ladder section and is used for locking the two ladder sections; the stabilizer bar is fixed in the ladder section bottom in the outside including stabilizer bar, stiffener, bracing piece and fixed steadying, and the stabilizer bar is fixed on the ladder section in the outside, and the stabilizer bar is connected to the one end of stiffener, and the ladder section in the outside is connected to the other end of stiffener, and fixed steadying is installed at the both ends of bracing piece, and fixed steadying is used for the bracing piece.

Description

Extension ladder with stable structure and herringbone ladder with same

Technical Field

The utility model relates to a ladder field, especially a take stable structure's extension ladder and take this extension ladder's double ladder.

Background

At present, current extension ladder only can stretch out and draw back, nevertheless does not stabilize the design to the ladder that stretches out and opens, leads to current extension ladder to erect the back insecure.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the existing extension ladder is unstable in erection.

The utility model provides an above-mentioned technical problem provide a take stable structure's extension ladder and take this extension ladder's double ladder.

The technical scheme of the utility model is that:

a telescopic ladder with a stable structure comprises a ladder frame, telescopic sections and stable sections, wherein the ladder frame is composed of ladder sections which are sleeved one by one, the innermost ladder section is positioned at the top of the ladder frame, and the outermost ladder section is positioned at the bottom of the ladder frame; the telescopic joint is fixed at the top of each ladder section except the innermost ladder section and is used for locking the two ladder sections; the stabilizer bar is fixed in the ladder section bottom in the outside including stabilizer bar, stiffener, bracing piece and fixed steadying, and the stabilizer bar is fixed on the ladder section in the outside, and the stabilizer bar is connected to the one end of stiffener, and the ladder section in the outside is connected to the other end of stiffener, and fixed steadying is installed at the both ends of bracing piece, and fixed steadying is used for the bracing piece.

Preferably, the reinforcing rods are cross rods.

Preferably, the telescopic joint comprises a cross rod, a telescopic pin and a spring, and holes matched with the telescopic pin are formed in two ends of the ladder section.

Preferably, the mobile stabilizing device further comprises a mobile stabilizing member, and the mobile stabilizing member is arranged on the support rod.

Preferably, the bottoms of the fixed stable part and the movable stable part are both designed in a triangular shape, and grooves are formed in the bottom surfaces of the fixed stable part and the movable stable part.

Preferably, the telescopic joint is provided with a pedal, and the support rod is provided with wheels.

A herringbone ladder with a stable structure comprises two ladder frames and a hinge rod; the tops of the two ladder frames are hinged, and the two ladder frames are connected through a hinge rod.

Preferably, the ladder comprises an elastic connecting piece, and the elastic connecting piece is used for connecting the two ladder frames.

Compared with the prior art, the utility model have following advantage and effect:

the utility model discloses an increase the stable festival, increase the area of contact of the bottom of extension ladder and ground, promote the firm degree after stretching out.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of portion A of FIG. 1;

FIG. 3 is an exploded view of FIG. 2;

FIG. 4 is a side view of portion B of FIG. 1;

fig. 5 is a schematic structural view of embodiment 2.

Description of reference numerals:

1-a first ladder section; 2-a second ladder section; 3-a third ladder section; 4-a telescopic joint; 5-a stabilizer bar; 6-a reinforcing rod; 7-a support bar; 8, fixing the fixing and fixing piece; 9-moving the steady piece; 10-pin; 11-a button; 12-a spring; 13-pin securing plate; 14-expansion joint fixing sleeve; 15-a cross bar; 16-connecting ropes; 17-a ladder frame; 18-a hinged lever; 19-wheels.

Detailed Description

The present invention will be described in further detail with reference to the following examples, which are illustrative of the present invention and are not intended to limit the present invention.

Example 1: a telescopic ladder with a stable structure comprises a ladder frame, telescopic sections and stable sections, wherein the ladder frame 17 is composed of a plurality of ladder sections, as shown in figure 1, the ladder frame 17 comprises a first ladder section 1, a second ladder section 2 and a third ladder section 3, as shown in figures 2 and 3, the second ladder section 2 and the third ladder section 3 are hollow, the bottom of the first ladder section 1 is provided with a hole, two ends of the second ladder section 2 are provided with holes, the top of the third ladder section 3 is provided with a hole, the first ladder section 1 is sleeved in the second ladder section 2, the second ladder section 2 is sleeved in the third ladder section 3, the first ladder section 1 is positioned at the top of the ladder frame, and the third ladder section 3 is positioned at the bottom of the ladder frame; as shown in fig. 2 and 3, the telescopic joint 4 includes a pin 10, a button 11, a spring 12, a pin fixing plate 13, a telescopic joint fixing sleeve 14 and a cross bar 15, two ends of the cross bar 15 are fixed at the top of the second ladder section 2 by the telescopic joint fixing sleeve 14, the pin fixing plate 13 is installed in the cross bar 15, the button 11 is installed in the pin fixing plate 13, the pin 10 is clamped in a chute of the pin fixing plate 13 by two cylinders, and the spring 12 is installed in the pin fixing plate 13 and is arranged at the top of the button 11; as shown in fig. 1, the stabilizing section comprises a stabilizing rod 5, a reinforcing rod 6, a supporting rod 7, a fixed stabilizing member 8 and a movable stabilizing member 9, the supporting rod 7 is fixed at the bottom of the third ladder section 3, the stabilizing rod 5 is fixed on the third ladder section 3, one end of the reinforcing rod 6 is connected with the stabilizing rod 5, the other end of the reinforcing rod 6 is connected with the third ladder section 3, the fixed stabilizing member 8 is installed at two ends of the supporting rod 7, the movable stabilizing member 9 is installed on the supporting rod 7, as shown in fig. 4, the bottoms of the fixed stabilizing member 8 and the movable stabilizing member 7 are both triangular designs, and grooves are formed in the bottom surfaces of the fixed stabilizing member and the movable stabilizing member, the contact area of the whole ladder and the ground is increased, the stability is improved, the. The movable steady piece 9 can move transversely on the support rod 7, the support position can be changed according to the condition of the ground, and the stability is further improved.

During the use, if will stretch out and draw back, for example, stretch out first ladder section 1, first ladder section 1 is located second ladder section 2 at first, first ladder section 1 does not have the locking with second ladder section 2, directly take out first ladder section can, when the hole of the bottom of first ladder section 1 overlaps with the hole at second ladder section 2 top, round pin 10 can insert two aforesaid two downtheholes that overlap this moment, because button 11 is in the bottom all the time under the effect of spring 12, round pin 10 can't kick-back, and then with first ladder section 1 and the locking of second ladder section 2, if will unblock, then press the button 11 of telescopic section 4 on second ladder section 2, round pin 10 moves toward horizontal pole 15 under the drive of button 11, and then round pin 10 breaks away from in the hole of first ladder section 1 bottom, realize the unblock. The extension and unlocking process of the second ladder section 2 is the same as the principle of the first ladder section. Similarly, if there is a fourth ladder section, a fifth ladder section, etc., the extending and unlocking process is the same principle.

Example 2:

this embodiment is substantially the same as embodiment 1, except that: in the embodiment 2, the cross bar 15 is provided with a foot pedal, as shown in fig. 5, the support bar 7 is provided with wheels 19, the upper ends of the two ladder frames 17 are hinged to form a herringbone ladder, and the hinged bar 18 and the connecting rope 16 are arranged between the two ladder frames 17.

In addition, it should be noted that the specific embodiments described in the present specification may differ in the shape of the components, the names of the components, and the like. All equivalent or simple changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. A telescopic ladder with a stable structure is characterized by comprising a ladder frame, telescopic sections and stable sections, wherein the ladder frame is composed of ladder sections which are sleeved one by one, the innermost ladder section is positioned at the top of the ladder frame, and the outermost ladder section is positioned at the bottom of the ladder frame; the telescopic joint is fixed at the top of each ladder section except the innermost ladder section and is used for locking the two ladder sections; the stabilizer bar is fixed in the ladder section bottom in the outside including stabilizer bar, stiffener, bracing piece and fixed steadying, and the stabilizer bar is fixed on the ladder section in the outside, and the stabilizer bar is connected to the one end of stiffener, and the ladder section in the outside is connected to the other end of stiffener, and fixed steadying is installed at the both ends of bracing piece, and fixed steadying is used for the bracing piece.

2. The telescopic ladder with stabilizing structure of claim 1, wherein said reinforcing bars are cross bars.

3. The extension ladder with the stabilizing structure as claimed in claim 1, wherein the extension section includes a cross bar, an extension pin and a spring, and holes matched with the extension pin are opened at both ends of the ladder section.

4. The telescopic ladder with stabilization structure of claim 1, further comprising a moving steady mounted on the support bar.

5. A telescopic ladder with a stabilizing structure according to claim 3, characterised in that the bottom of both the fixed steady and the moving steady are of triangular design and have grooves on their bottom surfaces.

6. A telescopic ladder with a stabilizing structure according to any one of claims 1-4, wherein a foot pedal is provided on the telescopic section and a wheel is provided on the support bar.

7. A trestle ladder comprising the extension ladder with stabilizing structure of claim 1 and an articulated bar; the telescopic ladder with the stable structure comprises a ladder frame, telescopic sections and stable sections, wherein the ladder frame is composed of ladder sections, the ladder sections are sleeved one by one, the innermost ladder section is positioned at the top of the ladder frame, and the outermost ladder section is positioned at the bottom of the ladder frame; the telescopic joint is fixed at the top of each ladder section except the innermost ladder section and is used for locking the two ladder sections; the stabilizing sections comprise stabilizing rods, reinforcing rods, supporting rods and fixing stabilizing members, the supporting rods are fixed at the bottoms of the outermost ladder sections, the stabilizing rods are fixed on the outermost ladder sections, one ends of the reinforcing rods are connected with the stabilizing rods, the other ends of the reinforcing rods are connected with the outermost ladder sections, the fixing stabilizing members are installed at two ends of the supporting rods, and the fixing stabilizing members are used for supporting the supporting rods; the tops of the two ladder frames are hinged, and the two ladder frames are connected through a hinge rod.

8. A trestle ladder according to claim 7, further comprising a resilient connection for connecting two ladder frames.