CN215718408U

CN215718408U - Double-handrail four-step ladder

Info

Publication number: CN215718408U
Application number: CN202122119875.1U
Authority: CN
Inventors: 兰许坡; 徐建东; 邱俊杰
Original assignee: Zhejiang Aopeng Industry And Trading Co ltd
Current assignee: Zhejiang Aopeng Industry And Trading Co ltd
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2022-02-01
Anticipated expiration: 2031-09-03

Abstract

A double-handrail four-step ladder comprises a folding ladder body, a handrail frame and a pedal structure, wherein the handrail frame comprises a cross rod and two vertical rods, the two vertical rods are respectively and rotatably connected to two sides of the top end of the folding ladder body, both sides of the top end of the folding ladder body are provided with fixing structures, each fixing structure comprises a connecting plate, a rotating plate and an elastic sheet, the connecting plate is fixed to one side of the top end of the folding ladder body, the connecting plate is provided with jacks positioned below the vertical rods, both sides of the middle position of the rotating plate are respectively and fixedly provided with side plates, the vertical rods are rotatably connected between the two side plates through pin shafts, and with the rotor plate between remain there is the interval, the shell fragment sets up in the interval and be located the top of round pin axle, the bottom and the montant fixed connection of shell fragment, the top of shell fragment to the top slope of rotor plate and with the rotor plate contact, the bottom of rotor plate extends to the below of montant and is fixed with the bolt that is used for inserting the jack. The utility model can quickly fold the handrail frame, the handrail frame does not occupy space, and the storage, the placement and the transportation are convenient.

Description

Double-handrail four-step ladder

Technical Field

The utility model relates to the technical field of ladders, in particular to a double-handrail four-step ladder.

Background

The ladder is used as an auxiliary climbing tool and mainly used for people to climb. However, the existing ladder generally comprises a ladder frame and a ladder board arranged on the ladder frame, and no other safety protection structures exist, so that the high-altitude falling accident is easily caused if the gravity center is unstable in the using process of people.

In order to prevent the falling accident from high altitude, the handrails are usually arranged on the ladder, but the handrails occupy extra space, are inconvenient to store and transport and are inconvenient to package and transport when the handrails are arranged on the ladder.

The chinese patent with publication number CN209637668U discloses a folding household ladder, the back tube that includes the head tube of two side-by-side settings and two side-by-side settings, two liang of mutual articulations of head tube and back tube, be connected with flexible handrail on the top of two head tubes, flexible handrail includes two telescopic links of pegging graft in the head tube, the horizontal pole is connected on the top of two telescopic links, still include a pull rod, it has the stroke groove to open on the head tube, the one end of pull rod is passed the stroke groove and is articulated with the end of telescopic link, the other end is articulated with the back tube, this application handrail is extending structure, can withdraw the handrail during packing or transportation, volume when reducing the packing carton transportation.

Meanwhile, the utility model also provides a technical scheme for solving the problems that the handrail occupies extra space, is inconvenient to store and transport and is inconvenient to package and transport.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a double-handrail four-step ladder, aiming at achieving the technical effect that the handrails can be folded and retracted so as to reduce the occupied space.

A double-handrail four-step ladder comprises a folding ladder body, a handrail frame and a rotatable and foldable pedal structure, wherein the handrail frame comprises a transverse rod and two vertical rods which are respectively positioned at two ends of the transverse rod, the two vertical rods are respectively and rotatably connected to two sides of the top end of the folding ladder body, fixing structures for fixing the vertical rods are also arranged on two sides of the top end of the folding ladder body, each fixing structure comprises a connecting plate, a rotating plate and a spring piece, the connecting plate is fixed on one side of the top end of the folding ladder body, inserting holes positioned below the vertical rods are formed in the connecting plate, two sides of the middle position of the rotating plate are respectively fixed with a side plate, the vertical rods are rotatably connected between the two side plates through pin shafts, a space is reserved between each vertical rod and the rotating plate, the spring pieces are arranged in the space and positioned above the pin shafts, the bottom ends of the spring pieces are fixedly connected with the vertical rods, the top ends of the spring pieces incline towards the top ends of the rotating plates and are contacted with the rotating plates, the bottom end of the rotating plate extends to the lower part of the vertical rod and is fixedly provided with a bolt for inserting into the jack.

Through adopting above-mentioned technical scheme, when needs folding receipts are received and are closed handrail frame, press the top of rotor plate to montant place direction, because it has the interval to remain between rotor plate and the montant, the rotor plate passes through the sideboard and is connected with the montant rotation, the top of rotor plate rotates to the montant, the shell fragment receives pressure and produces deformation, form the bounce, the bottom of rotor plate will be towards deviating from the direction rotation of montant and folding ladder body, thereby make the bolt take out from the jack, can rotate the montant downwards after that, make whole handrail frame rotate downwards and receive the receipts. In a similar way, when the handrail frame is expanded again to needs, press the top of rotor plate, upwards rotate the montant, when the position of bolt and jack corresponds, loosen and apply the power on the rotor plate, under the effect of the rebound force of shell fragment, the top of rotor plate deviates from the montant and rotates, and the bottom of rotor plate rotates towards the montant, and the bolt inserts the jack to fix the montant, accomplish the fixed of handrail frame. The utility model can quickly fold the handrail frame, the handrail frame does not occupy space, and the storage, the placement and the transportation are convenient.

The utility model further comprises the following steps: the fixed cover in outside of bolt is equipped with the rubber sleeve.

Through adopting above-mentioned technical scheme, the setting of rubber sleeve has promoted the stability when the bolt inserts the jack on the one hand, and on the other hand can protect the bolt, avoids bolt wearing and tearing to damage.

The utility model further comprises the following steps: the bottom cover of folding ladder body is equipped with the slipmat podotheca.

Through adopting above-mentioned technical scheme, the setting of slipmat podotheca has promoted frictional force between folding ladder body and the ground, has promoted the stability of folding ladder body.

The utility model further comprises the following steps: the bottom of the non-slip mat foot cover is provided with non-slip lines.

Through adopting above-mentioned technical scheme, the frictional force between slipmat podotheca and the ground has been promoted in the setting of anti-skidding line to further promote the stability of folding ladder body.

The utility model further comprises the following steps: and the cross rod is sleeved with an insulating sleeve.

Through adopting above-mentioned technical scheme, the setting of insulating cover can avoid operating personnel to produce static when the contact handrail frame.

The utility model further comprises the following steps: the insulating sleeve is provided with a holding grain.

Through adopting above-mentioned technical scheme, the setting of holding the line makes operating personnel more comfortable when holding the horizontal pole.

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

the utility model provides a two handrail four-step ladder, when needs folding receipts are closed and are held up the hand rack, press the top of rotor plate to montant place direction, because it has the interval to remain between rotor plate and the montant, the rotor plate passes through the sideboard and rotates with the montant and be connected, the top of rotor plate rotates to the montant, the shell fragment receives pressure and produces deformation, form the bounce, the bottom of rotor plate will be towards deviating from the direction rotation of montant and folding ladder body, thereby make the bolt take out from the jack, can rotate the montant downwards after that, make whole hand rack rotate downwards and receive receipts. In a similar way, when the handrail frame is expanded again to needs, press the top of rotor plate, upwards rotate the montant, when the position of bolt and jack corresponds, loosen and apply the power on the rotor plate, under the effect of the rebound force of shell fragment, the top of rotor plate deviates from the montant and rotates, and the bottom of rotor plate rotates towards the montant, and the bolt inserts the jack to fix the montant, accomplish the fixed of handrail frame. The utility model can quickly fold the handrail frame, the handrail frame does not occupy space, and the storage, the placement and the transportation are convenient.

Drawings

FIG. 1 is a schematic view of the overall structure of a double-handrail four-step ladder of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is a schematic structural view of a vertical rod and a connecting plate of a double-handrail four-step ladder of the present invention;

fig. 4 is an enlarged view at B in fig. 3.

Reference numerals: 1. a folding ladder body; 2. a handrail frame; 3. a pedal structure; 4. a cross bar; 5. a vertical rod; 6. a connecting plate; 7. a rotating plate; 8. a spring plate; 9. a jack; 10. a side plate; 11. a pin shaft; 12. and (4) a bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A double-handrail four-step ladder is shown in figures 1-4 and comprises a folding ladder body 1, handrail frames 2 and a rotatable and foldable pedal structure 3.

The foldable pedal structure 3 in the folding ladder technology is a mature prior art, such as a pedal in a folding household ladder in chinese patent No. CN209637668U, a folding mechanism in a ladder handrail structure in chinese patent No. CN208106298U, etc., and will not be described in detail herein.

The handrail frame 2 comprises a cross rod 4 and two vertical rods 5 which are respectively positioned at two ends of the cross rod 4. Two montants 5 rotate respectively to be connected in the top both sides of folding ladder body 1, and the top both sides of folding ladder body 1 still all are provided with the fixed knot who is used for fixed montant 5 and construct. Fixed knot constructs including connecting plate 6, rotor plate 7 and shell fragment 8, connecting plate 6 is fixed in top one side of folding ladder body 1, set up the jack 9 that is located montant 5 below on the connecting plate 6, the both sides of the intermediate position of rotor plate 7 all are fixed with sideboard 10, montant 5 rotates through round pin axle 11 and connects between two sideboard 10, and with the rotor plate 7 between remain the interval, shell fragment 8 sets up in the interval and is located the top of round pin axle 11, the bottom and the 5 fixed connection of montant of shell fragment 8, the top of shell fragment 8 to the top slope of rotor plate 7 and with the contact of rotor plate 7, the bottom of rotor plate 7 extends to the below of montant 5 and is fixed with the bolt 12 that is used for inserting jack 9.

Additionally, a rubber sleeve (not shown) is fixedly sleeved on the outside of the bolt 12. The setting of rubber sleeve has promoted the stability when bolt 12 inserts jack 9 on the one hand, and on the other hand can protect bolt 12, avoids 12 wearing and tearing of bolt to damage.

The bottom end of the folding ladder body 1 is sleeved with a non-slip mat foot sleeve (not shown in the figure). The setting of slipmat podotheca has promoted frictional force between folding ladder body 1 and the ground, has promoted folding ladder body 1's stability. The bottom end of the non-slip mat foot cover is provided with non-slip lines (not shown in the figure). The friction between the anti-slip mat foot covers and the ground is improved due to the arrangement of the anti-slip lines, so that the stability of the folding ladder body is further improved.

The cross bar is sleeved with an insulating sleeve (not shown in the figure). The arrangement of the insulating sleeve can avoid static electricity generated when an operator contacts the armrest frame. The insulating sleeve is provided with a grip (not shown in the figure). The arrangement of the holding lines ensures that the operator is more comfortable when holding the cross rod

The working principle is as follows: when handrail frame 2 is received to needs folding receipts, press the top of rotor plate 7 to montant 5 place direction, because it has the interval to remain between rotor plate 7 and the montant 5, rotor plate 7 rotates with montant 5 through sideboard 10 and is connected, the top of rotor plate 7 rotates to montant 5, shell fragment 8 receives pressure and produces deformation, form the bounce, the bottom of rotor plate 7 will be towards deviating from montant 5 and the direction rotation of folding ladder body 1, thereby make bolt 12 take out from jack 9, can rotate montant 5 downwards after that, make whole handrail frame 2 rotate downwards and receive the receipts.

In a similar way, when needs expand handrail frame 2 again, press the top of rotor plate 7, upwards rotate montant 5, when the position of bolt 12 and jack 9 corresponds, loosen and apply the power on rotor plate 7, under the effect of the rebound force of shell fragment 8, the top of rotor plate 7 deviates from montant 5 and rotates, the bottom of rotor plate 7 rotates towards montant 5, bolt 12 inserts jack 9 to fix montant 5, accomplish fixing of handrail frame 2.

The utility model can quickly fold the handrail frame 2, the handrail frame 2 does not occupy space, and the storage, the placement and the transportation are convenient.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a four step ladder of two handrails, includes folding ladder body (1), handrail frame (2) and rotatable footboard structure (3) of converting into, handrail frame (2) include horizontal pole (4) and two montant (5) that are located horizontal pole (4) both ends respectively, two montant (5) rotate respectively and connect in the top both sides of folding ladder body (1), its characterized in that: the folding ladder comprises a folding ladder body (1), and is characterized in that both sides of the top end of the folding ladder body (1) are provided with fixing structures for fixing vertical rods (5), each fixing structure comprises a connecting plate (6), a rotating plate (7) and an elastic sheet (8), the connecting plates (6) are fixed on one side of the top end of the folding ladder body (1), jacks (9) positioned below the vertical rods (5) are formed in the connecting plates (6), side plates (10) are fixed on both sides of the middle position of each rotating plate (7), the vertical rods (5) are rotatably connected between the two side plates (10) through pin shafts (11), a gap is reserved between each vertical rod and the rotating plate (7), the elastic sheets (8) are arranged in the gap and positioned above the pin shafts (11), the bottom ends of the elastic sheets (8) are fixedly connected with the vertical rods (5), the top ends of the elastic sheets (8) are inclined towards the top ends of the rotating plates (7) and are in contact with the rotating plates (7), the bottom end of the rotating plate (7) extends to the lower part of the vertical rod (5) and is fixed with a bolt (12) which is used for being inserted into the jack (9).

2. A double handrail four step ladder as claimed in claim 1, wherein: the outside of the bolt (12) is fixedly sleeved with a rubber sleeve.

3. A double handrail four step ladder as claimed in claim 1, wherein: the bottom end of the folding ladder body (1) is sleeved with a non-slip mat foot sleeve.

4. A double handrail four step ladder as claimed in claim 3, wherein: the bottom of the non-slip mat foot cover is provided with non-slip lines.

5. A double handrail four step ladder as claimed in claim 1, wherein: the cross rod (4) is sleeved with an insulating sleeve.

6. A double handrail four step ladder as claimed in claim 5, wherein: the insulating sleeve is provided with a holding grain.