CN211598479U

CN211598479U - Movable telescopic herringbone ladder

Info

Publication number: CN211598479U
Application number: CN202020004298.4U
Authority: CN
Inventors: 吕善勇; 赵艳波; 韩通; 蒋文竹; 崔延珑; 陈烈; 庞戈
Original assignee: China Construction First Group Corp Ltd
Current assignee: China Construction First Group Corp Ltd
Priority date: 2020-01-02
Filing date: 2020-01-02
Publication date: 2020-09-29
Anticipated expiration: 2030-01-02

Abstract

The utility model discloses a portable telescopic double ladder, including two sets of scalable complex first step framves and second step frame, two second step frame top rotatable coupling form one and take the platform, are equipped with the first pulley and the second pulley that are used for promoting the second step frame on every first step frame of group and the second step frame, the winding has the round rope between first pulley and second pulley. And the side beam of the second step frame is provided with a limiting device, and the limiting device can be clamped with each cross brace of the first step frame to prevent the second step frame from retracting. The bottom of the first ladder frame is provided with a supporting truss, and the bottom of the supporting truss is provided with trundles, so that the herringbone ladder can be conveniently moved. Double ladder stable in structure, convenient flexible regulation to be equipped with stop device and guarantee the safety in utilization, conveniently remove simultaneously, solved the not enough problem of double ladder flexibility.

Description

Movable telescopic herringbone ladder

Technical Field

The utility model belongs to the technical field of the building tool, concretely relates to portable telescopic double ladder.

Background

In a building construction site, the herringbone ladder is a necessary common tool, and is convenient for people to carry out various climbing operations. Due to the difference of the operation heights, the herringbone ladder with one type often cannot meet various use occasions, the operation height is often too high, the herringbone ladder cannot be used, and a higher herringbone ladder needs to be replaced, and when the operation height is not too high, the use of an operation space is influenced by the higher herringbone ladder used in the prior art, and the herringbone ladder needs to be replaced frequently. In addition, when the herringbone ladder is replaced, an operator is required to carry the herringbone ladder, the operation efficiency is influenced, and meanwhile, the workload is increased.

At present, a movable telescopic herringbone ladder is arranged on the building market, but the movable telescopic herringbone ladder is inconvenient to move and adjust in a telescopic mode, the use height is limited, the flexibility is insufficient, the overall stability is poor, and the requirements of the construction site of the building at present cannot be met.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned drawbacks and deficiencies of the prior art, it would be desirable to provide a movable telescopic herring ladder to solve the problems set forth in the background above.

The technical scheme adopted by the utility model for solving the problems is that the movable telescopic herringbone ladder comprises a first ladder frame and a second ladder frame which are respectively formed by combining a plurality of parallel cross braces and beams perpendicular to the two sides of the cross braces, and the tops of the two second ladder frames can be rotatably connected to form a riding platform; the second side beam of the second ladder frame can be matched with the first side beam of the first ladder frame to extend and retract relative to the first side beam; the top of first ladder frame is equipped with first pulley, the bottom of second ladder frame is equipped with the second pulley, around having the round rope between first pulley and the second pulley, through the round rope is steerable the flexible of second ladder frame.

Preferably, a support truss is connected to the bottom of the first ladder rack, and at least two casters are arranged at the bottom of the support truss.

Preferably, at least one limiting device is arranged on the second side beam at the bottom of the second ladder frame.

Preferably, the first side beam of the first step frame is provided with a chute structure with an opening on the inner side surface, and the second side beam of the second step frame can slide along the chute structure.

Preferably, the first pulley is fixed on a first cross brace at the top of the first ladder rack, and the second pulley is fixed on a second cross brace at the bottom of the second ladder rack.

Preferably, the caster is a universal wheel with double brakes.

Preferably, the limiting mechanism comprises a limiting groove and a limiting key, one side of the limiting groove is provided with an opening, one end of the limiting key is rotatably connected with the limiting groove, the other end of the limiting key is a movable end and can rotate out of the opening, and a limiting column for limiting the maximum rotation angle of the limiting key is arranged in the limiting groove.

Preferably, a clamping groove is formed in the movable end of the limiting key, and the limiting key can be matched and clamped with the first cross brace of the first ladder rack at the position of the maximum rotation angle of the limiting key through the clamping groove.

Preferably, the support truss comprises a bottom truss connecting the bottoms of the two first side beams of the first ladder rack and a side truss connecting the two ends of the bottom truss and the two first side beams.

Preferably, be equipped with two perpendicular to bottom surfaces and the backup pad that is parallel to each other on the bracing truss bottom surface, the axis of rotation both ends of truckle are fixed in on two backup pad planes, the backup pad bottom arrives bracing truss's distance is less than the truckle bottom arrives bracing truss's distance.

The utility model discloses beneficial effect who has:

(1) the pulley block is formed by the pulleys and the pulley rope, so that an operator can stretch and contract and adjust the herringbone ladder when standing on the ground, and the herringbone ladder is limited and fixed by the limiting device, and the problem that the use height of the herringbone ladder is limited is solved;

(2) the universal wheels with double brakes are adopted, so that the herringbone ladder is more convenient to move and operate, and the problem of insufficient flexibility of the herringbone ladder is solved;

(3) the support truss and the ladder frame form a triangular stress structure, so that the overall structure of the herringbone ladder is more stable, and the safety is improved;

(4) reasonable structure, convenient operation, suitability for various occasions and high popularization value.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic front view of the limiting device of the present invention;

fig. 3 is a schematic view of the installation of the caster of the present invention.

In the figure: 1. a first ladder frame; 11. a first cross brace; 12. a first side member; 2. a second ladder frame; 21. a second cross brace; 22. a second side member; 3. a riding platform; 4. a first pulley; 5. a second pulley; 6. a wheel rope; 7. a limiting device; 71. a limiting groove; 72. a limiting key; 73. a limiting column; 74. a card slot; 8. supporting the truss; 81. a bottom truss; 82. a side truss; 83. a support plate; 9. caster wheel

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

As shown in fig. 1, a movable telescopic herringbone ladder comprises two groups of first ladder frames 1 and second ladder frames 2 in telescopic fit with the first ladder frames, wherein the first ladder frames 1 are composed of a plurality of first cross braces 11 which are uniformly arranged in parallel with each other and two first side beams 12 which are parallel with each other, perpendicular to the first cross braces 11 and connected with the two ends of the first cross braces, and the second ladder frames 2 are composed of a plurality of second cross braces 21 which are uniformly arranged in parallel with each other and two second side beams 22 which are parallel with each other, perpendicular to the second cross braces 21 and connected with the two ends of the second cross braces. The herringbone ladder is composed of two groups of mutually matched first ladder frames 1 and second ladder frames 2, and the top side surfaces of the two second ladder frames 2 are rotatably connected to form a riding platform 3. The bottom of the first ladder frame 1 is connected with a supporting truss 8, and two trundles 9 are arranged at the bottom of the supporting truss 8. Be equipped with a first pulley 4 on the first stull 11 in top of first ladder frame 1, be equipped with a second pulley 5 on the bottom second stull 21 of second ladder frame 2, be equipped with between first pulley 4 and second pulley 5 and take turns rope 6, the pulling takes turns rope 6 and can promote second ladder frame 2, stretches out from first ladder frame 1. Be equipped with stop device 7 on two second side beams 22 in second step frame 2 bottom respectively, stop device 7 can be spacing fixed with each first stull 11 cooperation of first step frame 1, prevents that second step frame 2 from stretching out the back and retracting, guarantees safety in utilization.

Specifically, the inner sides of the two first side beams 12 of the first ladder rack 1 are provided with open chute structures, the first side beams 12 are hollow structures and can accommodate the two second side beams 22 of the second ladder rack 2, and the second side beams 22 can extend and retract along the chute structures of the first side beams 12.

Specifically, as shown in fig. 2, the limiting device 7 includes a limiting groove 71 with an opening on one side, a rotatable limiting key 72 is connected in the limiting groove 71, one end of the limiting key 72 is rotatably connected to the rotating shaft in the middle of the limiting groove 71, the other end is a movable end which can be screwed out from the opening of the limiting groove 71, and a limiting column 73 is arranged in the limiting groove 1 for limiting the maximum rotation angle of the limiting key 72. The end of the limit key 72 is provided with a slot 74, and the slot 74 is right-angled and can be matched and clamped with the right-angled edge of the first cross brace 11, so as to prevent the second step frame 2 of the herringbone ladder from sliding downwards after being adjusted to the height required to be used.

Specifically, the supporting truss 8 comprises a bottom truss 81 connected to the bottoms of the two first side beams 12 of the first ladder rack 1 and a side truss 82 connected to the two ends of the bottom truss 81 and the outer sides of the two first side beams 12, and the trusses are matched to form a triangular structure, so that the stress is more stable. Two supporting plates 83 which are perpendicular to the bottom plane and parallel to each other are arranged at two ends of the bottom truss 81, and the two supporting plates 83 are in contact with the ground to play a supporting role when the herringbone ladder is in a use state.

Specifically, as shown in fig. 3, the caster 9 is fixed on the side plane of the two support plates 83 through a rotating shaft, and the distance between the bottom of the caster 9 and the bottom truss 81 is greater than the distance between the bottom of the support plate 83 and the bottom truss 81. The truckle 9 can select the universal wheel of taking dual brake for use, makes things convenient for the removal of double ladder.

When the herringbone ladder is used, the limiting key 72 of the limiting device 7 is firstly arranged at an initial position, namely the herringbone ladder is not rotated out from the limiting groove 71, then the wheel rope 6 is pulled to respectively extend the two second ladder frames 2 out of the first ladder frame 1 and adjust the height to be used, then the limiting key 72 is rotated to the maximum rotation angle position, and the clamping groove 74 and a first cross brace 11 of the first ladder frame 1 are matched, clamped and fixed. After use, the limit keys 72 are turned into the limit grooves 71, the wheel ropes 6 are loosened, the two sides of the herringbone ladder are closed, the second ladder frame 2 retracts to the lowest position, and then the herringbone ladder is pushed to the designated position by the casters 9 to be stored.

The above embodiment is merely to illustrate the technical solution of the present invention and not to limit the same, and although the present invention is described in detail with reference to the embodiment, those skilled in the art should understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims

1. The utility model provides a portable telescopic double ladder, includes two sets ofly respectively by a plurality of stull that are parallel to each other and perpendicular to first ladder frame and the second ladder frame that the combination of both sides roof beam of stull formed, two the top rotatable coupling of second ladder frame forms a platform of taking which characterized in that: the second side beam of the second ladder frame can be matched with the first side beam of the first ladder frame to extend and retract relative to the first side beam; the top of first ladder frame is equipped with first pulley, the bottom of second ladder frame is equipped with the second pulley, around having the round rope between first pulley and the second pulley, through the round rope is steerable the flexible of second ladder frame.

2. The movable telescopic herringbone ladder of claim 1, wherein: the bottom of the first ladder frame is connected with a support truss, and the bottom of the support truss is provided with at least two trundles.

3. The movable telescopic herringbone ladder of claim 1, wherein: and at least one limiting device is arranged on the second side beam at the bottom of the second ladder frame.

4. The movable telescopic herringbone ladder of claim 1, wherein: the first side beam of the first ladder frame is provided with a chute structure with an opening on the inner side surface, and the second side beam of the second ladder frame can slide along the chute.

5. The movable telescopic herringbone ladder of claim 1, wherein: the first pulley is fixed on the first cross brace at the top of the first ladder frame, and the second pulley is fixed on the second cross brace at the bottom of the second ladder frame.

6. The movable telescopic herringbone ladder of claim 2, wherein: the truckle is the universal wheel that has dual brake.

7. The movable telescopic herringbone ladder of claim 3, wherein: the limiting device comprises a limiting groove and a limiting key, one side of the limiting groove is provided with an opening, one end of the limiting key is rotatably connected with the limiting groove, the other end of the limiting key is a movable end and can rotate out of the opening, and a limiting column for limiting the maximum rotation angle of the limiting key is arranged in the limiting groove.

8. The movable telescopic herringbone ladder of claim 7, wherein: the movable end of the limiting key is provided with a clamping groove, and the clamping groove enables the limiting key to be matched and clamped with the first cross brace of the first ladder rack at the maximum rotation angle of the limiting key.

9. The movable telescopic herringbone ladder of claim 2, wherein: the support truss comprises a bottom truss and side trusses, wherein the bottom truss is connected with the bottoms of the two first side beams of the first ladder frame, and the side trusses are connected with the two ends of the bottom truss and the two first side beams.

10. The movable telescopic herringbone ladder of claim 2, wherein: the supporting truss is characterized in that two supporting plates which are perpendicular to the bottom surface and parallel to each other are arranged on the bottom surface of the supporting truss, two ends of a rotating shaft of each caster are fixed on the planes of the two supporting plates, and the distance from the bottom of each supporting plate to the supporting truss is smaller than that from the bottom of each caster to the supporting truss.