CN215255973U

CN215255973U - Pull-type telescopic passenger ladder

Info

Publication number: CN215255973U
Application number: CN202120056690.8U
Authority: CN
Inventors: 时浩南; 潘凯凯; 俞占强
Original assignee: Sl Elevator Co ltd
Current assignee: Sl Elevator Co ltd
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2021-12-21
Anticipated expiration: 2031-01-11

Abstract

The utility model relates to the technical field of ladders, in particular to a dragging type telescopic passenger ladder, which comprises a bidirectional telescopic rod and a multi-stage telescopic rod, wherein the left end and the right end of the bidirectional telescopic rod are fixedly connected with a fixed block, the inner part of the fixed block is fixedly connected with the multi-stage telescopic rod, the outer part of the fixed block is fixedly connected with a protective shell, the inner part of the protective shell is slidably connected with a push rod, the outer part of the push rod is slidably connected with the multi-stage telescopic rod, the lower end of the multi-stage telescopic rod is fixedly connected with a connecting plate, the inner part of the connecting plate is spirally connected with a lead screw, the lower end of the lead screw is rotatably connected with a universal wheel, the outer part of the lead screw is fixedly connected with a rotating block, the front side of the bidirectional telescopic rod is slidably connected with a moving rod, in the utility model, the push rod is pulled, so that the multi-stage telescopic rod is stretched, thereby driving the extension of the passenger ladder, the second spring is used for contracting the push rod, so that the passenger ladder is fixed, and the multi-stage telescopic rod is prevented from moving in the using process.

Description

Pull-type telescopic passenger ladder

Technical Field

The utility model relates to a ladder technical field specifically is a scalable passenger ladder of drag-type.

Background

The ladder is mainly used for loft ladders for hotel climbing, can be stretched and shortened like fishing rods, the length after the stretching is about 0.7 m, the height after the stretching can reach about 4 m, the weight of the ladder is only about 6-10 kg, and the ladder can bear about 150 kg during climbing operation.

In prior art, the passenger ladder can only realize high shrink simple, can't realize horizontal width control, and it is too big to lead to passenger ladder area when not using, can't realize wholly accomodating, and simultaneously in the use, if fixed ground is uneven, the passenger ladder just can incline to place, has increased the danger of the in-process personnel of ascending a height.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pull-type scalable passenger ladder to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a dragging type telescopic passenger ladder comprises a bidirectional telescopic rod and a multi-stage telescopic rod, wherein the left end and the right end of the bidirectional telescopic rod are fixedly connected with a fixed block, the inner part of the fixed block is fixedly connected with the multi-stage telescopic rod, the outer part of the fixed block is fixedly connected with a protective shell, the inner part of the protective shell is slidably connected with a push rod, the outer part of the push rod is slidably connected with the multi-stage telescopic rod, the lower end of the multi-stage telescopic rod is fixedly connected with a connecting plate, the inner part of the connecting plate is spirally connected with a lead screw, the lower end of the lead screw is rotatably connected with a universal wheel, the outer part of the lead screw is fixedly connected with a rotating block, the front side of the bidirectional telescopic rod positioned at the upper end and the lower end is slidably connected with a moving rod, the outer part of the moving rod is fixedly connected with a limiting block, the left side of the limiting block is engaged with a gear, and the upper side and the lower side of the outer part of the gear are engaged with racks, one end of the rack is fixedly connected with a bidirectional telescopic rod.

Preferably, the right end of the limiting block is fixedly connected with a first guide rod, the outer portion of the first guide rod is connected with a supporting plate in a sliding mode, the outer portion of the supporting plate is fixedly connected with a bidirectional telescopic rod, a first spring is arranged on the outer portion of the first guide rod, and the left end and the right end of the first spring are fixedly connected with the limiting block and the supporting plate respectively.

Preferably, a second spring is arranged outside the push rod, one end of the second spring is fixedly connected with the push rod, and the other end of the second spring is fixedly connected with the protection shell.

Preferably, the universal wheel is a snap ring universal wheel, the upper end of the universal wheel is fixedly connected with second guide rods which are arranged in a bilateral symmetry mode, and the outer portion of each second guide rod is connected with a connecting plate in a sliding mode.

Preferably, a first sliding groove is formed in the rack, the rack is connected with the guide shaft in a sliding mode through the first sliding groove, and the front end and the rear end of the guide shaft are fixedly connected with two-way telescopic rods.

Preferably, the front side of the bidirectional telescopic rod at the upper end and the lower end is provided with a second sliding chute, and the bidirectional telescopic rod is connected with the movable rod in a sliding manner through the second sliding chute.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in the utility model, the multi-stage telescopic rod is stretched by pulling the push rod through the arranged push rod, the multi-stage telescopic rod, the lead screw, the rotating block and the universal wheel, so that the extension and the contraction of the passenger ladder are driven, the fixation of the passenger ladder is realized by the contraction of the push rod by the second spring, the multi-stage telescopic rod is prevented from moving in the using process, the danger is caused, the lead screw is driven to rotate by the rotating block, the height of the universal wheel is adjusted, the uneven ground is used, and the passenger ladder is prevented from being placed and inclined to cause the danger;

2. the utility model discloses in, through the two-way telescopic link that sets up, rack, gear, stopper and first spring, through the two-way telescopic link is tensile, drives the removal of rack to it is rotatory to drive the gear, thereby realizes the synchronous flexible of two-way telescopic link, drives the removal of stopper through first spring, thereby realizes the fixed of counter gear, prevents in the use, and two-way telescopic link takes place to remove, causes danger, the two-way telescopic link's of being convenient for simultaneously accomodating.

Drawings

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

FIG. 2 is a schematic view of the internal structure of the bi-directional telescopic rod of the present invention;

fig. 3 is a schematic view of the internal structure of the multi-stage telescopic rod of the present invention;

FIG. 4 is a schematic view of the structure at A in FIG. 1 according to the present invention;

fig. 5 is a schematic structural diagram of the point B in fig. 1 according to the present invention.

In the figure: 1-fixed block, 2-bidirectional telescopic rod, 4-multistage telescopic rod, 5-rack, 6-first chute, 7-guide shaft, 8-gear, 9-limited block, 10-movable rod, 11-first spring, 12-supporting plate, 13-first guide rod, 14-protective shell, 15-push rod, 16-second spring, 17-connecting plate, 18-lead screw, 19-second guide rod, 20-rotating block, 21-universal wheel and 22-second chute.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Referring to fig. 1-5, the present invention provides a technical solution:

a dragging type telescopic passenger ladder comprises a bidirectional telescopic rod 2 and a multi-stage telescopic rod 4, wherein the left end and the right end of the bidirectional telescopic rod 2 are fixedly connected with a fixed block 1, the inner part of the fixed block 1 is fixedly connected with the multi-stage telescopic rod 4, the outer part of the fixed block 1 is fixedly connected with a protection shell 14, the inner part of the protection shell 14 is slidably connected with a push rod 15, the outer part of the push rod 15 is slidably connected with the multi-stage telescopic rod 4, the lower end of the multi-stage telescopic rod 4 is fixedly connected with a connecting plate 17, the inner part of the connecting plate 17 is spirally connected with a screw rod 18, the lower end of the screw rod 18 is rotatably connected with a universal wheel 21, the outer part of the screw rod 18 is fixedly connected with a rotating block 20, the front side of the bidirectional telescopic rod 2 positioned at the upper end and the lower end is slidably connected with a moving rod 10, the outer part of the moving rod 10 is fixedly connected with a limiting block 9, the left side of the limiting block 9 is engaged with a gear 8, and the upper side and the lower side of the outer part of the gear 8 are engaged with a rack 5, one end of the rack 5 is fixedly connected with a bidirectional telescopic rod 2.

The right end of the limiting block 9 is fixedly connected with a first guide rod 13, the outer portion of the first guide rod 13 is connected with a supporting plate 12 in a sliding mode, the outer portion of the supporting plate 12 is fixedly connected with a bidirectional telescopic rod 2, a first spring 11 is arranged on the outer portion of the first guide rod 13, the left end and the right end of the first spring 11 are respectively fixedly connected with the limiting block 9 and the supporting plate 12, through the arranged first guide rod 13, the moving direction of the limiting block 9 can be conveniently determined, the limiting block 9 is prevented from deviating when limiting the gear 8, the sliding inside the bidirectional telescopic rod 2 is prevented from causing danger, and through the arranged first spring 11, the limiting block 9 is always guaranteed to be in contact with the gear 8, so that the gear 8 is positioned, the gear 8 is prevented from rotating, and the using effect is influenced; a second spring 16 is arranged outside the push rod 15, one end of the second spring 16 is fixedly connected with the push rod 15, the other end of the second spring 16 is fixedly connected with the protective shell 14, and the push rod 15 is fixed inside the multi-stage telescopic rod 4 through the arranged second spring 16, so that the multi-stage telescopic rod 4 is fixed, and the telescopic function is realized; the universal wheel 21 is a snap ring universal wheel, the upper end of the universal wheel 21 is fixedly connected with second guide rods 19 which are arranged in bilateral symmetry, the outer part of each second guide rod 19 is connected with a connecting plate 17 in a sliding mode, and the universal wheel 21 is supported by the connecting plates 17 conveniently through the arranged second guide rods 19, so that the bearing capacity of the screw rod 18 is enhanced in the using process, and dangers are prevented in the using process; first spout 6 has been seted up to the inside of rack 5, and rack 5 through the first spout 6 and the guide shaft 7 sliding connection that set up, the equal fixedly connected with two-way telescopic rod 2 in both ends around the guide shaft 7. The rack 5 can move conveniently through the arranged first sliding chute 5 and the guide shaft 7, and the bidirectional telescopic rod 2 is prevented from deviating in the stretching process; the front side of the two-way telescopic rod 2 at the upper end and the lower end is provided with a second chute 22, the two-way telescopic rod 2 is connected with the moving rod 10 in a sliding mode through the second chute 22, the second chute 22 is arranged, the two-way telescopic rod 2 can slide in the two-way telescopic rod 2 quickly and conveniently rotate 10, and therefore the limiting block 10 is driven to move, and the two-way telescopic rod 2 can stretch conveniently.

The working process is as follows: when the passenger ladder is required to be used, the multi-stage telescopic rod 4 is pulled out layer by layer, so that the passenger ladder is stretched, after the passenger ladder is pulled out, the push rod 15 is contracted through the second spring 16, the push rod 150 is inserted into the multi-stage telescopic rod 4, so that the passenger ladder is fixed, the multi-stage telescopic rod 4 is prevented from moving and causing danger in the use process, after the multi-stage telescopic rod 4 is stretched, the moving block 10 is pushed, the two-way telescopic rod 2 is stretched, the rack 5 is driven to move, the gear 8 is driven to rotate, so that the synchronous stretching of the two-way telescopic rod 2 is realized, the limiting block 9 is driven to move through the first spring 11, so that the gear 8 is fixed, the danger caused by the movement of the two-way telescopic rod 2 in the use process is prevented, meanwhile, the storage of the two-way telescopic rod 2 is convenient, and the moving direction of the limiting block 9 is convenient to determine through the arranged first guide rod 13, prevent that stopper 9 from taking place the skew when spacing to gear 8, lead to the inside slip of two-way telescopic rod 2, cause danger, when needs place the visitor's ladder on uneven road surface, it is rotatory to drive lead screw 18 through turning block 20, thereby to the altitude mixture control of universal wheel 21, the realization is to the use on uneven ground, prevent that the visitor's ladder from placing the slope, cause danger, the second guide arm 19 that the rethread set up, be convenient for connecting plate 17 is to the support of universal wheel 21, thereby prevent in the use, strengthen the bearing capacity of lead screw 18, prevent to take place danger in the use, after the use is accomplished, withdraw the visitor's ladder can.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a scalable passenger ladder of drag formula, includes two-way telescopic link (2) and multi-stage telescopic link (4), its characterized in that: the left end and the right end of the bidirectional telescopic rod (2) are fixedly connected with a fixed block (1), the inner part of the fixed block (1) is fixedly connected with a multi-stage telescopic rod (4), the outer part of the fixed block (1) is fixedly connected with a protective shell (14), the inner part of the protective shell (14) is connected with a push rod (15) in a sliding manner, the outer part of the push rod (15) is connected with the multi-stage telescopic rod (4) in a sliding manner, the lower end of the multi-stage telescopic rod (4) is fixedly connected with a connecting plate (17), the inner part of the connecting plate (17) is spirally connected with a lead screw (18), the lower end of the lead screw (18) is rotatably connected with a universal wheel (21), the outer part of the lead screw (18) is fixedly connected with a rotating block (20), the front side of the bidirectional telescopic rod (2) which is positioned at the upper end and the lower end is movably connected with a moving rod (10), and the outer part of the moving rod (10) is fixedly connected with a limit block (9), the left side meshing of stopper (9) is connected with gear (8), and both sides all meshing about the outside of gear (8) are connected with rack (5), the one end fixedly connected with bidirectional telescopic rod (2) of rack (5).

2. The pull-type retractable passenger conveyor of claim 1, wherein: the right-hand member fixedly connected with first guide arm (13) of stopper (9), and the outside sliding connection of first guide arm (13) has backup pad (12), the outside fixedly connected with two-way telescopic link (2) of backup pad (12), and the outside of first guide arm (13) is equipped with first spring (11), both ends difference fixedly connected with stopper (9) and backup pad (12) about first spring (11).

3. The pull-type retractable passenger conveyor of claim 1, wherein: the outside of the push rod (15) is provided with a second spring (16), one end of the second spring (16) is fixedly connected with the push rod (15), and the other end of the second spring (16) is fixedly connected with a protective shell (14).

4. The pull-type retractable passenger conveyor of claim 1, wherein: the universal wheel (21) is a snap ring universal wheel, the upper end of the universal wheel (21) is fixedly connected with second guide rods (19) which are arranged in a bilateral symmetry mode, and the outer portions of the second guide rods (19) are connected with connecting plates (17) in a sliding mode.

5. The pull-type retractable passenger conveyor of claim 1, wherein: first spout (6) have been seted up to the inside of rack (5), and rack (5) through first spout (6) and guiding axle (7) sliding connection who sets up, equal fixedly connected with bidirectional scalability pole (2) in both ends around guiding axle (7).

6. The pull-type retractable passenger conveyor of claim 1, wherein: the front side of the bidirectional telescopic rod (2) positioned at the upper end and the lower end is provided with a second sliding chute (22), and the bidirectional telescopic rod (2) is connected with the movable rod (10) in a sliding mode through the second sliding chute (22).