CN209942720U

CN209942720U - Portable ladder

Info

Publication number: CN209942720U
Application number: CN201920209371.9U
Authority: CN
Inventors: 尹衍琦
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-02-19
Filing date: 2019-02-19
Publication date: 2020-01-14
Anticipated expiration: 2029-02-19

Abstract

The utility model provides a portable ladder, which belongs to the technical field of climbing tools and comprises two parallel supporting rods and a plurality of pedal rods connected between the two supporting rods, wherein the pedal rods are parallel to each other, each pedal rod comprises a left pedal rod and a right pedal rod rotationally connected with the left pedal rod, the left pedal rod and the right pedal rod are rotationally connected by virtue of a rotating shaft, the axial direction of the rotating shaft is parallel to the supporting rods, the left pedal rod and the right pedal rod have freedom degrees around the rotating shaft, and the left pedal rod and/or the right pedal rod can rotate to enable the two supporting rods to be overlapped; at least one of the pedal levers is provided with a locking structure for locking the left pedal lever and the right pedal lever which rotate to a straight line. The utility model provides a portable ladder can overlap after two branches are rotatory for the whole width of ladder reduces, and convenient to accomodate and carry open the back when the ladder, can prevent branch relative rotation through locking structure, and the use is firm reliable.

Description

Portable ladder

Technical Field

The utility model belongs to the technical field of the climbing apparatus, more specifically say, relate to a portable ladder.

Background

The ladder is a common tool in climbing operations such as decoration, city management, power maintenance and the like. At present, there are many kinds of ladders, such as a straight ladder, an elevator ladder, a telescopic ladder, and the like. However, the width of the existing ladder is fixed, and the ladder cannot be stretched and folded, and particularly for indoor decoration personnel, the ladder in the carried tool occupies a large part and is inconvenient to carry.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a portable ladder to solve the technical problem that the ladder that exists is not portable among the prior art.

In order to achieve the above object, the utility model adopts the following technical scheme: a portable ladder is provided, comprising: the pedal device comprises two parallel supporting rods and a plurality of pedal rods connected between the two supporting rods, wherein the pedal rods are parallel to each other and comprise a left pedal rod and a right pedal rod rotatably connected with the left pedal rod; at least one of the pedal levers is provided with a locking structure for locking the left pedal lever and the right pedal lever which rotate to a straight line.

Optionally, the rotating shaft is a countersunk bolt, a countersunk groove hole is formed in the left pedal rod or the right pedal rod, and the left pedal rod is connected with the right pedal rod through a locking nut.

Optionally, the left pedal lever and the right pedal lever have mutually overlapped bosses, and the rotating shaft is connected to the mutually overlapped bosses.

Optionally, the left foot bar and the right foot bar are in mortise-tenon joint fit, one end of the left foot bar is a tenon, the other end of the left foot bar is a groove, and the rotating shaft is rotatably connected to the mortise-tenon joint fit structure.

Optionally, the locking structure includes a left positioning pin disposed on a side surface of the left foot bar, a right positioning pin disposed on a side surface of the right foot bar, and a connecting piece hinged to the left foot bar or the right foot bar, and upper and lower end surfaces of the connecting piece are respectively provided with a left bayonet and a right bayonet for the corresponding insertion of the left positioning pin and the right positioning pin.

Optionally, the locking structure is provided on both the uppermost foot lever and the lowermost foot lever, or the locking structure is provided on the middle foot lever.

Optionally, two the branch corresponds the uppermost foot rest lever and the lowermost position of foot rest lever are equipped with the through-hole, correspond remaining the position of foot rest lever is equipped with the blind hole, be located the uppermost foot rest lever with be located the lowermost the foot rest lever both ends all pass branch and have the extension of outside extension, the extension has and is used for preventing the fitting pin of foot rest lever slippage, remaining the both ends of foot rest lever all insert the correspondence in the blind hole.

Optionally, the device is further provided with auxiliary rods respectively hinged with the supporting rods correspondingly, the upper ends of the auxiliary rods are rotatably connected with the supporting rods through connecting bolts, a supporting rod is arranged between the two auxiliary rods and comprises two hinged branch rods, and the two branch rods are rotatably connected through pins parallel to the auxiliary rods; the connecting rod is arranged between the auxiliary rod and the supporting rod, two ends of the connecting rod are respectively hinged with the auxiliary rod and the supporting rod, and the connecting rod is of a split structure and is rotatably connected with the supporting rod through a pin perpendicular to the supporting rod.

Optionally, the lower end of the supporting rod is provided with an anti-slip rubber sleeve, and the bottom of the anti-slip rubber sleeve is provided with anti-slip lines.

Optionally, a lock catch or a plug buckle for locking the two overlapped struts is further provided.

The utility model provides a portable ladder's beneficial effect lies in: compared with the prior art, the utility model discloses portable ladder can overlap after two branch rotations for the whole width of ladder reduces, is convenient for accomodate and carry, opens the back when the ladder, can prevent branch relative rotation through locking structure, uses firmly reliably.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a first schematic structural view of a portable ladder according to an embodiment of the present invention;

fig. 2 is a schematic retracted structural view of a portable ladder according to an embodiment of the present invention;

FIG. 3 is a first schematic structural view of the foot rest lever shown in FIG. 1;

FIG. 4 is a second schematic structural view of the foot rest lever shown in FIG. 1;

FIG. 5 is a schematic top view of the locking foot bar of FIGS. 3 and 4;

FIG. 6 is a schematic top view of the foot bar of FIGS. 3 and 4 shown unlocked;

fig. 7 is a schematic structural view of a portable ladder according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1-a locking pin; 2-a strut; 3-antiskid rubber sleeve; 4-a foot lever; 41-left pedal lever; 42-right foot bar; 43-a rotating shaft; 5-locking structure; 51-a connecting piece; 52-left bayonet; 53-left locating pin; 54-a right bayonet; 55-right locating pin; 6-auxiliary rod; 7-a support bar; 8-connecting rod.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 6 together, the portable ladder of the present invention will now be described. The portable ladder comprises two parallel struts 2 and a plurality of pedal rods 4 connected between the two struts 2, wherein the pedal rods 4 are parallel to each other, the pedal rods 4 comprise a left pedal rod 41 and a right pedal rod 42 rotatably connected with the left pedal rod 41, the left pedal rod 41 and the right pedal rod 42 are rotatably connected by a rotating shaft 43, the axial direction of the rotating shaft 43 is parallel to the struts 2, the left pedal rod 41 and the right pedal rod 42 have 360-degree freedom around the rotating shaft 43, and the left pedal rod 41 and/or the right pedal rod 42 can be rotated to enable the two struts 2 to be overlapped; at least one of the foot levers 4 is provided with a locking structure 5 for locking the left foot lever 41 and the right foot lever 42 rotated in a straight line.

The utility model provides a portable ladder compares with prior art, can overlap after two branches 2 are rotatory, like figure 2 for the whole width of ladder reduces, and be convenient for accomodate and carry, opens the back when the ladder, can prevent branch 2 relative rotation through locking structure 5, uses firm reliably, like figure 1, wherein has locking structure 5's pedal lever 4 like figure 5, figure 6.

Optionally, referring to fig. 3 to 6, the rotating shaft 43 is a countersunk bolt, a countersunk hole is formed on the left pedal rod 41 or the right pedal rod 42, and the left pedal rod 41 and the right pedal rod 42 are connected by a lock nut. One of the pedal rods is provided with a sunk groove hole, the sunk groove hole is arranged on the upper surface of the pedal rod 4 and is the surface of the pedal, the sunk groove hole is adopted to enable a nut of a countersunk head bolt to be sunk into the sunk groove hole so as to keep the surface of the pedal smooth, and the other pedal rod is provided with a through hole. Wherein, in order to facilitate the rotation of the left pedal rod 41 and the right pedal rod 42, the adjacent ends of the left pedal rod 41 and the right pedal rod 42 are arranged into a circular arc shape or a rotating gap is left.

Alternatively, referring to fig. 4, the left pedal lever 41 and the right pedal lever 42 have bosses overlapping each other, and the rotation shaft 43 is connected to the bosses overlapping each other.

Alternatively, referring to fig. 6 and 7, the left pedal rod 41 and the right pedal rod 42 are in mortise-tenon joint, one end of each of the left pedal rod and the right pedal rod is a tenon, the other end of each of the left pedal rod and the right pedal rod is a groove, and the rotating shaft 43 is rotatably connected to the mortise-tenon joint structure.

Optionally, referring to fig. 5 to 6, the locking structure 5 includes a left positioning pin 53 disposed on a side surface of the left foot bar 41, a right positioning pin 55 disposed on a side surface of the right foot bar 42, and a connecting piece 51 hinged to the left foot bar 41 or the right foot bar 42, and a left bayonet 52 and a right bayonet 54 for the corresponding insertion of the left positioning pin 53 and the right positioning pin 55 are respectively disposed on an upper end surface and a lower end surface of the connecting piece 51. When the ladder is opened for use, the connecting piece 51 is rotated to the right bayonet 54 and clamped into the right positioning pin 55, the left and right pedal rods 42 can be prevented from rotating, and when the ladder needs to be stored, the connecting piece 51 is reversely rotated to the left bayonet 52 and clamped into the left positioning pin 53. Wherein, one or two foot rest levers 4 are provided with the locking structure 5, and the operation is simple and convenient.

Alternatively, both the foot rest lever 4 positioned at the uppermost end and the foot rest lever 4 positioned at the lowermost end are provided with the locking structure 5, or the foot rest lever 4 positioned in the middle is provided with the locking structure 5.

Optionally, two of the support rods 2 are provided with through holes (not shown in the figure) at positions corresponding to the uppermost pedal rod 4 and the lowermost pedal rod 4, blind holes (not shown in the figure) at positions corresponding to the rest of the pedal rods 4, the pedal rod 4 at the uppermost end and the pedal rod 4 at the lowermost end both pass through the support rods 2 and have outwardly extending extensions, the extensions have locking pins 1 for preventing the pedal rods 4 from slipping off, and the rest of the pedal rods 4 both ends are inserted into the corresponding blind holes. The pedal rod 4 at upper and lower both ends directly passes corresponding branch 2, then inserts fitting pin 1 location locking, and the pedal rod 4 of mid portion inserts in the blind hole that corresponds, utilizes the blind hole location, and this kind of mounting means is convenient for the dismantlement between pedal rod 4 and the branch 2, and the equipment is also very convenient. Therefore, if the portable multifunctional trolley needs to be disassembled and then carried and transported, the disassembly and the assembly are simple and convenient. Of course, the extension portion is provided with a through hole through which the locking pin 1 passes, the locking pin 1 is provided with an anti-falling cap, or the locking pin 1 is a split pin.

Optionally, referring to fig. 7, an auxiliary rod 6 is further provided, which is hinged to the support rod 2 correspondingly, the upper end of the auxiliary rod 6 is rotatably connected to the support rod 2 by a connecting bolt, a support rod 7 is provided between the two auxiliary rods 6, the support rod 7 includes two hinged branch rods, and the two branch rods are rotatably connected by a pin parallel to the auxiliary rods 6; the utility model discloses a support rod, including auxiliary rod 6, branch 2, connecting rod 8, auxiliary rod 6 and branch 2, be equipped with connecting rod 8 between auxiliary rod 6 and the branch 2, the both ends of connecting rod 8 respectively with auxiliary rod 6 with branch 2 is articulated, connecting rod 8 is the components of a whole that can function independently structure, between with branch 2 vertically pin rotate to be connected. The auxiliary rod 6 is opened, the auxiliary rod 6 and the support rod 2 form a triangular support, wherein the supporting rod 7 and the pedal rod 4 rotate in the same direction, and the connecting rod 8 rotates upwards.

Optionally, referring to fig. 1 and 7, the lower end of the supporting rod 2 is provided with an anti-slip rubber sleeve 3, and the bottom of the anti-slip rubber sleeve 3 is provided with anti-slip lines. The friction between the ladder and the supporting surface is increased, the ladder for supporting is prevented from sliding, and the ladder with a steel structure is prevented from scratching the ground.

Optionally, still be equipped with and be used for two after overlapping hasp or eye-splice (not shown in the figure) that branch 2 locked, hasp and eye-splice are the latch fitting commonly used among the prior art, wherein, set up flexible band connection eye-splice on branch 2, accomodate overlapping back when two branch 2, connect hasp or eye-splice, can prevent that two branch 2 from scattering, so, more do benefit to and carry and store and place.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. Portable ladder includes two branches that are parallel to each other and a plurality of connection two pedal lever between the branch, each pedal lever is parallel to each other, its characterized in that: the pedal levers comprise a left pedal lever and a right pedal lever which is rotatably connected with the left pedal lever, the left pedal lever and the right pedal lever are rotatably connected by virtue of a rotating shaft, the axial direction of the rotating shaft is parallel to the support levers, the left pedal lever and the right pedal lever have freedom degrees around the rotating shaft, and the left pedal lever and/or the right pedal lever can rotate to enable the two support levers to be overlapped; at least one of the pedal levers is provided with a locking structure for locking the left pedal lever and the right pedal lever which rotate to a straight line.

2. A portable ladder as set forth in claim 1 wherein: the rotating shaft is a countersunk bolt, a slotted hole is formed in the left pedal rod or the right pedal rod, and the left pedal rod is connected with the right pedal rod through a locking nut.

3. A portable ladder as set forth in claim 1 or 2 wherein: the left pedal rod and the right pedal rod are provided with mutually overlapped bosses, and the rotating shaft is connected to the mutually overlapped bosses.

4. A portable ladder as set forth in claim 1 or 2 wherein: the left foot bar and the right foot bar are in mortise-tenon joint fit, one end of the left foot bar is a tenon, the other end of the left foot bar is a groove, and the rotating shaft is rotatably connected to the mortise-tenon joint fit structure.

5. A portable ladder as set forth in claim 1 wherein: the locking structure comprises a left positioning pin arranged on the side surface of the left pedal rod, a right positioning pin arranged on the side surface of the right pedal rod and a connecting piece hinged with the left pedal rod or the right pedal rod, wherein the upper end surface and the lower end surface of the connecting piece are respectively provided with a left bayonet and a right bayonet, and the left positioning pin and the right positioning pin are correspondingly inserted into the left bayonet and the right bayonet.

6. A portable ladder as set forth in claim 5 wherein: the foot rest lever located at the uppermost end and the foot rest lever located at the lowermost end are both provided with the locking structures, or the foot rest lever located in the middle is provided with the locking structures.

7. A portable ladder as set forth in claim 1 wherein: two branch corresponds the uppermost foot rest lever and lowermost the position of foot rest lever is equipped with the through-hole, corresponds remaining the position of foot rest lever is equipped with the blind hole, is located the uppermost foot rest lever with be located the lowermost the foot rest lever both ends are all passed branch and have the extension of outside extension, the extension has and is used for preventing the fitting pin of foot rest lever slippage, remaining the both ends of foot rest lever all insert the correspondence in the blind hole.

8. A portable ladder as set forth in claim 1 wherein: the support rod is provided with two hinged branch rods, and the two branch rods are rotatably connected with the auxiliary rods by pins parallel to the auxiliary rods; the connecting rod is arranged between the auxiliary rod and the supporting rod, two ends of the connecting rod are respectively hinged with the auxiliary rod and the supporting rod, and the connecting rod is of a split structure and is rotatably connected with the supporting rod through a pin perpendicular to the supporting rod.

9. A portable ladder as set forth in claim 1 wherein: the lower end of the supporting rod is provided with an anti-skidding rubber sleeve, and the bottom of the anti-skidding rubber sleeve is provided with anti-skidding lines.

10. A portable ladder as set forth in claim 1 wherein: and a lock catch or an eye-splice used for locking the two overlapped supporting rods is also arranged.