CN215718409U

CN215718409U - Telescopic platform ladder

Info

Publication number: CN215718409U
Application number: CN202122265988.2U
Authority: CN
Inventors: 练展鹏
Original assignee: Yangjiang Tengda Safety Technology Co ltd
Current assignee: Yangjiang Tengda Safety Technology Co ltd
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2022-02-01
Anticipated expiration: 2031-09-17

Abstract

The utility model discloses a telescopic platform ladder, which comprises a herringbone ladder with two working states of opening and folding, wherein the herringbone ladder comprises two first ladder rods, two second ladder rods, a plurality of steps, a platform board, two first telescopic legs, two second telescopic legs and a locking assembly, one end of the platform board is rotatably arranged between the two first ladder rods, the middle part of the platform board is rotatably connected with the two second ladder rods through a hinge assembly, the two first ladder rods are respectively and slidably arranged in the corresponding first telescopic legs, the two second ladder rods are respectively and slidably arranged in the corresponding second telescopic legs, and the locking assembly is respectively arranged on the outer side surfaces of the top ends of the corresponding first telescopic legs and the second telescopic legs and is respectively contacted with or far away from the outer side surfaces of the corresponding first ladder rods and the second ladder rods. The platform ladder is simple in structure and convenient to operate, the required height of the platform ladder can be adjusted, the use requirements of different heights are met, the locking is stable and firm, and the integral stability of the platform ladder is ensured.

Description

Telescopic platform ladder

Technical Field

The utility model relates to the field of platform ladders, in particular to a telescopic platform ladder.

Background

Platform ladders are commonly used for aerial work, and the platform above the platform ladder can be used for people to stand. The existing platform ladder has single function, only has fixed height, cannot stretch out and draw back, has a single use environment, and cannot meet the requirements of different use environments.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the present invention is to provide a telescopic platform ladder to solve the problems in the background art mentioned above, aiming at the defects existing in the prior art.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: a telescopic platform ladder comprises a herringbone ladder with two working states of opening and folding, wherein the herringbone ladder comprises two first ladder rods, two second ladder rods, a plurality of steps, a platform plate, two first telescopic legs, two second telescopic legs and a locking assembly, a plurality of pedals are arranged between the two first ladder rods, between the two second ladder rods, between the two first telescopic legs and between the two second telescopic legs, one end of the platform plate is rotatably arranged between the two first ladder rods, the middle part of the platform plate is rotatably connected with the two second ladder rods through a hinge assembly, the two first ladder rods are respectively and slidably arranged in the corresponding first telescopic legs, the two second ladder rods are respectively and slidably arranged in the corresponding second telescopic legs, and the first ladder rods and the second ladder rods are arranged between the first telescopic legs and the second telescopic legs, the locking assembly is respectively arranged on the outer side surfaces of the top ends of the corresponding first telescopic foot and the second telescopic foot and is respectively contacted with or kept away from the corresponding outer side surfaces of the first ladder bar and the second ladder bar.

As a further elaboration of the above technical solution:

in the above technical solution, the locking assembly includes a base, a locking cover, two pull nails, a pressure spring and a shaft lock, the base is respectively installed on the top outer side surfaces of the corresponding first and second telescopic legs, the locking cover is respectively fastened on the corresponding outer side surfaces of the base and contacts with or is far away from the outer side surfaces of the base, the outer side surfaces of the first and second ladder bars are respectively provided with a plurality of insertion holes which are matched and inserted with the shaft lock, one end of the shaft lock is fixedly connected with the inner side wall of the locking cover, the other end passes through the base and is respectively matched and inserted with the corresponding insertion holes, the pressure spring is arranged in the base and is respectively sleeved on the corresponding outer side surfaces of the shaft lock, the pull nails are respectively installed on the upper and lower ends inside the locking cover and pass through the corresponding base, The first telescopic foot and the second telescopic foot are in contact with or far away from the outer side surfaces of the first ladder bar and the second ladder bar correspondingly.

In the above technical scheme, the blind rivet passes through one end of the first telescopic leg and the second telescopic leg and is provided with a limiting lug in an outward extending manner, gaps for the limiting lug to move transversely are respectively arranged between the first ladder rod and the first telescopic leg and between the second ladder rod and the second telescopic leg, and the limiting lug is arranged in the gap.

In the technical scheme, the shaft lock comprises a connecting part and an inserting part which are sequentially arranged along the axis of the shaft lock, the connecting part is fixedly connected with the lock cover, the inserting part is matched and inserted with the corresponding inserting hole, the diameter of the inserting part is larger than that of the connecting part, and the pressure spring is sleeved on the outer side surface of the connecting part.

In the technical scheme, the shaft lock further comprises a rivet, and the rivet sequentially penetrates through one side face of the lock cover and the connecting portion of the shaft lock and then extends out of the other side face of the lock cover, so that the shaft lock is fixedly connected with the lock cover.

In the above technical scheme, the upper end and the lower end of the outer side of the locking cover are respectively provided with a holding port for a hand to insert and hold.

In the above technical scheme, first flexible foot with the flexible foot of second includes sliding part and rake respectively, the rake leans out respectively and is "eight" style of calligraphy, the sliding part is parallel to each other to be installed on the top of rake, it has internally seted up and to supply first ladder bar with the gliding spout of second ladder bar grafting, first ladder bar with the second ladder bar slides and pegs graft in the spout.

Compared with the prior art, the utility model has the beneficial effects that: the platform ladder is simple in structure and convenient to operate, the required height of the platform ladder can be adjusted through the arrangement of the first telescopic leg, the second telescopic leg and the locking component, the use requirements of different heights are met, the locking is stable and firm, the integral stability of the platform ladder is ensured, and the platform ladder is prevented from shaking in use.

Drawings

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

FIG. 2 is a schematic view of the utility model in its expanded configuration;

FIG. 3 is a front view of the utility model when expanded;

FIG. 4 is a schematic view of the present invention in an expanded configuration with the first and second telescoping legs extended;

FIG. 5 is an enlarged schematic view of the structure at A in FIG. 4;

FIG. 6 is an elevational view of the utility model open with the first and second telescoping legs extended;

fig. 7 is an enlarged sectional view at B in fig. 6.

In the figure: 100. a herringbone ladder; 1. a first ladder bar; 2. a second ladder bar; 11. inserting holes; 12. a gap; 3. stepping; 4. a platform plate; 5. a first telescopic leg; 6. a second telescopic leg; 51. a sliding part; 52. an inclined portion; 53. a chute; 7. a locking assembly; 71. a base; 72. a locking cover; 721. a grip opening; 73. two blind rivets; 74. a pressure spring; 75. shaft locking; 751. a connecting portion; 752. a plug-in part; 76. a limiting bump; 77. riveting; 8. a hinge assembly.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. 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 application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; 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 meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

As shown in fig. 1-7, a telescopic platform ladder comprises a catwalk 100 having two working states of open and collapsed. The herringbone ladder 100 comprises two first ladder bars 1, two second ladder bars 2, a plurality of steps 3, a platform plate 4, two first telescopic feet 5, two second telescopic feet 6 and a locking assembly 7, wherein a plurality of pedals 3 are arranged between the two first ladder bars 1, between the two second ladder bars 2, between the two first telescopic feet 5 and between the two second telescopic feet 6. Wherein, the top end of the second ladder bar 2 is hinged with the first ladder bar 1, so that the first ladder bar and the second ladder bar are arranged in a herringbone manner. Platform board 4's one end is rotated and is installed two between the first ladder pole 1, the middle part is passed through hinge assembly 8 and two second ladder pole 2 rotates and connects for when the platform ladder is folded, platform board 4 can upwards rotate vertical folding, and when the platform ladder was opened, platform board 4 can rotate the level downwards and open. Two first ladder bar 1 slides respectively and installs correspondingly in the first flexible foot 5, two second ladder bar 2 slides respectively and installs correspondingly in the flexible foot 6 of second, first ladder bar 1 with second ladder bar 2 is arranged in first flexible foot 5 with between the flexible foot 6 of second, locking subassembly 7 is installed respectively correspondingly on the top lateral surface of the flexible foot 6 of first flexible foot 5 and second and respectively with corresponding the lateral surface of first ladder bar 1 and second ladder bar 2 contacts or keeps away from mutually. The detailed structure and action principle of the hinge assembly 8 are well known to those skilled in the art, and therefore will not be described herein.

In this embodiment, as shown in fig. 5 and 7, the locking assembly 7 includes a base 71, a locking cover 72, two pull nails 73, pressure springs 74 and shaft locks 75, the base 71 is respectively installed on the outer side surfaces of the top ends of the corresponding first and second telescopic legs 5 and 6, the locking cover 72 is respectively fastened on the corresponding outer side surfaces of the base 71 and contacts with or is away from the outer side surface of the base 71, the outer side surfaces of the first and second ladder bars 1 and 2 are respectively provided with a plurality of insertion holes 11 which are inserted and connected with the shaft locks 75, one end of the shaft locks 75 is fixedly connected with the inner side wall of the locking cover 72, the other end of the shaft locks passes through the base 71 and is inserted and connected with the corresponding insertion holes 11, the pressure springs 74 are placed in the base 71 and are respectively sleeved on the outer side surfaces of the corresponding shaft locks 75, the pull nails 73 are respectively installed on the upper and lower ends inside the locking cover 72, and the telescopic legs pass through the corresponding base 71, the first telescopic leg 5 and the second telescopic leg 6 to contact with or be far away from the outer side surfaces of the corresponding first ladder bar 1 and the corresponding second ladder bar 2.

Specifically, as shown in fig. 7, the rivet 73 penetrates through one end of the first telescopic leg 5 and one end of the second telescopic leg 6 to extend outward to form a limiting bump 76, a gap 12 for allowing the limiting bump 76 to move transversely is respectively arranged between the first ladder bar 1 and the first telescopic leg 5 and between the second ladder bar 2 and the second telescopic leg 6, the limiting bump 76 is arranged in the gap 12 to limit the pulling-out of the rivet 73, the rivet 73 is prevented from being separated from the first telescopic leg 5 and the second telescopic leg 6, the contact area between the rivet 73 and the first ladder bar 1 and the second ladder bar 2 is increased, and the locking of the rivet is more stable and firm.

As shown in fig. 7, the shaft lock 75 includes a connection portion 751 and an insertion portion 752 sequentially disposed along an axis thereof, the connection portion 751 is fixedly connected to the lock cover 72, the insertion portion 752 is inserted into the corresponding insertion hole 11, and a diameter of the insertion portion 752 is larger than a diameter of the connection portion 751, so as to ensure stability of insertion and avoid shaking during use. The pressure spring 74 is sleeved on the outer side surface of the connecting part 751, one end of the pressure spring 74 is in contact with the top surface of the insertion part 752, the other end of the pressure spring 74 is in contact with the inner side surface of the base 71, the pressure spring 74 is limited, the pulling-out distance is ensured, and the pressure spring 74 is prevented from being out of position. Specifically, the shaft lock further comprises a rivet 77, and the rivet 77 sequentially penetrates through one side surface of the lock cover 72 and the connecting part 751 of the shaft lock 75 and then extends out of the other side surface of the lock cover 72, so that the shaft lock 75 is fixedly connected with the lock cover 72, and the connection between the shaft lock 75 and the lock cover 72 is more stable and firm.

As shown in fig. 5, the upper and lower ends of the outer side of the locking cover 72 are respectively provided with a holding port 721 for a human hand to insert and hold, so that the human hand can conveniently hold, pull out and insert, and the operation difficulty is reduced.

In this embodiment, as shown in fig. 4, the first telescopic leg 5 and the second telescopic leg 6 respectively include a sliding portion 51 and an inclined portion 52, the inclined portion 52 is respectively inclined outwards and is "eight" style of calligraphy, the sliding portion 51 is parallel to each other and is installed on the top of the inclined portion 52, and it is internally provided with a sliding groove 53 for the first ladder rod 1 and the second ladder rod 2 to be inserted and slid, the first ladder rod 1 and the second ladder rod 2 are inserted and inserted in the sliding groove 53 in a sliding manner, so that the platform ladder is integrally stable in arrangement, and is prevented from shaking during use, and the use safety of a user is ensured.

When the telescopic operation is performed, the hand holds the holding port 721 of the lock cover 72 to pull the lock cover 72 outwards, thereby driving the shaft lock 75 to pull outwards to separate from the original plug hole 11, meanwhile, the shaft lock 75 compresses the pressure spring 74, the limit lug 76 on the pull nail 73 is far away from the first ladder rod 1 and the second ladder rod 2, at this time, the locking component 7 loosens the first ladder rod 1 and the second ladder rod 2 to separate from the first telescopic leg 5 and the second telescopic leg 6, after the first ladder rod 1 and the second ladder rod 2 slide in the slide groove 53 of the first telescopic leg 5 and the second telescopic leg 6 to the required height, the lock cover 72 is held by hand, the shaft lock 75 is inserted into the corresponding insertion hole 11, the shaft lock 75 is pressed under the elastic action of the pressure spring 74, meanwhile, the limit lug 76 on the blind rivet 73 is contacted with the outer side surfaces of the first ladder bar 1 and the second ladder bar 2, thereby locking the first ladder bar 1 and the second ladder bar 2 in the first telescopic leg 5 and the second telescopic leg 6.

The platform ladder is simple in structure and convenient to operate, the required height of the platform ladder can be adjusted through the arrangement of the first telescopic leg 5, the second telescopic leg 6 and the locking component 7, the use requirements of different heights are met, the locking is stable and firm, the integral stability of the platform ladder is ensured, and the platform ladder is prevented from shaking in use.

The technical scope of the present invention is not limited to the above embodiments, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.

Claims

1. A telescopic platform ladder comprises a herringbone ladder with two working states of opening and folding, and is characterized in that the herringbone ladder comprises two first ladder rods, two second ladder rods, a plurality of steps, a platform plate, two first telescopic legs, two second telescopic legs and a locking assembly, a plurality of pedals are arranged between the two first ladder rods, between the two second ladder rods, between the two first telescopic legs and between the two second telescopic legs, one end of the platform plate is rotatably arranged between the two first ladder rods, the middle part of the platform plate is rotatably connected with the two second ladder rods through a hinge assembly, the two first ladder rods are respectively and slidably arranged in the corresponding first telescopic legs, the two second ladder rods are respectively and slidably arranged in the corresponding second telescopic legs, the first ladder rods and the second ladder rods are arranged between the first telescopic legs and the second telescopic legs, the locking assembly is respectively arranged on the outer side surfaces of the top ends of the corresponding first telescopic foot and the second telescopic foot and is respectively contacted with or kept away from the corresponding outer side surfaces of the first ladder bar and the second ladder bar.

2. The telescopic platform ladder according to claim 1, wherein the locking assembly comprises a base, a locking cover, two pull nails, a pressure spring and a shaft lock, the base is respectively arranged on the outer side surfaces of the top ends of the corresponding first telescopic leg and the second telescopic leg, the locking cover is respectively fastened on the corresponding outer side surfaces of the base and contacts with or is far away from the outer side surfaces of the base, a plurality of insertion holes which are matched and inserted with the shaft lock are respectively arranged on the outer side surfaces of the first ladder bar and the second ladder bar, one end of the shaft lock is fixedly connected with the inner side wall of the locking cover, the other end of the shaft lock penetrates through the base and is respectively matched and inserted with the corresponding insertion holes, the pressure spring is arranged in the base and is respectively sleeved on the corresponding outer side surfaces of the shaft lock, the pull nails are respectively arranged on the upper end and the lower end inside the locking cover, and the telescopic legs penetrate through the corresponding base, the first telescopic legs and the second telescopic legs to be in contact with or far away from the outer side surfaces of the corresponding first ladder bar and the corresponding second ladder bar.

3. The telescopic platform ladder according to claim 2, wherein the pull nails extend outwards through one end of the first telescopic leg and one end of the second telescopic leg and are provided with limiting lugs, gaps for the limiting lugs to move transversely are respectively arranged between the first ladder rod and the first telescopic leg and between the second ladder rod and the second telescopic leg, and the limiting lugs are arranged in the gaps.

4. The telescopic platform ladder according to claim 2, wherein the shaft lock comprises a connecting portion and an inserting portion sequentially arranged along an axis of the shaft lock, the connecting portion is fixedly connected with the lock cover, the inserting portion is inserted into the corresponding inserting hole in a matched mode, the diameter of the inserting portion is larger than that of the connecting portion, and the pressure spring is sleeved on the outer side face of the connecting portion.

5. The telescopic platform ladder according to claim 4, further comprising a rivet, wherein the rivet sequentially penetrates through one side surface of the locking cover and the connecting portion of the shaft lock and then extends out of the other side surface of the locking cover, so that the shaft lock is fixedly connected with the locking cover.

6. The telescopic platform ladder according to claim 2, wherein the upper and lower ends of the outer side of the locking cover are respectively provided with a holding port for a human hand to insert and hold.

7. The telescopic platform ladder of claim 1, wherein the first telescopic leg and the second telescopic leg respectively comprise a sliding part and an inclined part, the inclined part is inclined outwards respectively to form an 'eight' shape, the sliding parts are arranged in parallel on the top end of the inclined part, a sliding groove is formed in the top end of the inclined part, the sliding groove can be used for the first ladder rod and the second ladder rod to be inserted and slid, and the first ladder rod and the second ladder rod are inserted and slid in the sliding groove.