CN209875031U - Adjustable lifting herringbone ladder - Google Patents
Adjustable lifting herringbone ladder Download PDFInfo
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- CN209875031U CN209875031U CN201920474000.3U CN201920474000U CN209875031U CN 209875031 U CN209875031 U CN 209875031U CN 201920474000 U CN201920474000 U CN 201920474000U CN 209875031 U CN209875031 U CN 209875031U
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- ladder
- limiting
- rod
- lifting
- herringbone
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Abstract
The utility model discloses an adjustable lifting herringbone ladder, which comprises two lifting ladders with hinged top ends, wherein each lifting ladder comprises a first ladder and a second ladder, the first ladder is sleeved in the second ladder and can move along the extending direction of the second ladder; the first ladder comprises first ladder supports and first ladder pedals, and the two parallel first ladder supports are connected through a plurality of first ladder pedals; the second ladder comprises second ladder supports and second ladder pedals, and the two parallel second ladder supports are connected through a plurality of second ladder pedals; the first ladder is provided with a lifting mechanism for moving the second ladder and a limiting mechanism for limiting the movement of the second ladder; but first ladder below both sides are equipped with lateral shifting's horizontal pole respectively, and the tip of horizontal pole is equipped with through nut complex screw rod, and the axis of screw rod is unanimous with the companion ladder extending direction. The utility model aims at providing an adjustable over-and-under type double ladder, this double ladder can adapt to use under the hollow ground environment, is difficult for lodging, and stability is good.
Description
Technical Field
The utility model belongs to the life instrument field specifically is an adjustable over-and-under type double ladder.
Background
The herringbone ladder is a climbing tool for decoration and other works in the space above a plane, and when the herringbone ladder is used, the front ladder rod, the rear ladder rod and the ground form an isosceles triangle and look like a Chinese character 'ren', so the herringbone ladder is called as the herringbone ladder in an image. The early herringbone ladder is generally made of wood, and along with the development of the metal industry, aluminum alloy materials are mostly utilized at present; the aluminum alloy herringbone ladder has the characteristics of lightness, attractiveness, durability and low manufacturing cost, and is widely used. The existing herringbone ladder is various in types, fixed, manually telescopic, electrically lifting and the like are arranged mostly, however, the herringbone ladder is mostly used on the flat ground, the bottom of the herringbone ladder cannot be adjusted, construction under the extremely uneven environment of terrain (such as hollow ground or stair wall construction) is frequently encountered in building construction, and due to the fact that the herringbone ladder cannot be adjusted, the herringbone ladder is often unstable in placement and easy to fall down, personal safety of constructors is seriously threatened, and therefore the existing herringbone ladder is necessary to be improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at above problem, provide an adjustable over-and-under type double ladder, this double ladder can adapt to use under the hollow ground environment, is difficult for lodging, and stability is good.
In order to realize the above purpose, the utility model adopts the technical scheme that: an adjustable lifting herringbone ladder comprises two lifting ladders with hinged top ends, wherein each lifting ladder comprises a first ladder and a second ladder, the first ladder is sleeved in the second ladder and can move along the extension direction of the second ladder; the first ladder comprises first ladder supports and first ladder pedals, and the two parallel first ladder supports are connected through a plurality of first ladder pedals; the second ladder comprises second ladder supports and second ladder pedals, and the two parallel second ladder supports are connected through a plurality of second ladder pedals; the first ladder is provided with a lifting mechanism for moving the second ladder and a limiting mechanism for limiting the movement of the second ladder; but first ladder below both sides are equipped with lateral shifting's horizontal pole respectively, and the tip of horizontal pole is equipped with through nut complex screw rod, and the axis of screw rod is unanimous with the companion ladder extending direction.
Furthermore, the lower end of the screw rod is connected with the bottom plate through a ball joint universal joint, and the upper end of the screw rod is provided with a hand wheel.
Furthermore, first ladder below is equipped with the pole cover with horizontal pole matched with, be equipped with on the pole cover and can remove and run through its inside bolt, evenly be equipped with a plurality of jacks with bolt matched with on the horizontal pole along its extending direction.
Furthermore, the lifting mechanism comprises a first pull rope, one end of the first pull rope is connected with the bottom end of the second ladder, and the other end of the first pull rope returns to the ground after bypassing the pulley above the first ladder.
Furthermore, stop gear includes gag lever post and second stay cord, first ladder support side is equipped with movably and runs through its inside gag lever post, second ladder support lateral surface evenly is equipped with the spacing hole of a plurality of along its extending direction, and gag lever post one end and spacing hole cooperation, the other end are connected with the second stay cord, and first ladder support side still is equipped with the pressure spring who makes the gag lever post top tight spacing hole.
Furthermore, a plurality of door-shaped buckles used for clamping the second pull rope are arranged on the side surface of the first ladder support along the extension direction of the first ladder support.
Furthermore, a clamping groove matched with the first ladder support is oppositely arranged on the inner side of the first ladder.
Furthermore, the lower ends of the two elevators are connected through a safety rope when opened for use.
The utility model has the advantages that: the herringbone ladder can be suitable for use in a hollow ground environment, is not prone to lodging, and is good in stability. The contact surface of the bottom plate is large, large supporting force and large friction force can be provided, the bottom plate can have the largest contact surface with the ground through the ball joint universal joint, and the hand wheel facilitates an operator to rotate the screw rod. According to the practical situation, the proper pulling-out length of the cross rod is selected, and the cross rod is matched with the jack through the plug pin, so that the cross rod is locked and cannot move along the rod sleeve automatically, and the reliability is ensured.
Drawings
Fig. 1 is a schematic view of the structure of the present invention.
Fig. 2 is a schematic side view of the present invention shown in fig. 1.
Fig. 3 is a schematic view of a part of an enlarged structure at a in fig. 2 according to the present invention.
The text labels in the figures are represented as: 1. a first ladder; 11. a first ladder support; 12. a first ladder step; 13. a card slot; 2. a second ladder; 21. a second ladder support; 22. a second ladder step; 3. a cross bar; 31. a bolt; 32. a jack; 4. a screw; 41. (ii) a 42. A base plate; 43. a hand wheel; 5. (ii) a 6. A first pull cord; 7. a pulley; 8. a limiting mechanism; 81. a limiting rod; 82. a second pull cord; 83. a compression spring; 84. a limiting hole; 9. a safety rope.
Detailed Description
In order to make the technical solution of the present invention better understood, the present invention is described in detail below with reference to the accompanying drawings, and the description of the present invention is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention.
As shown in fig. 1-3, the specific structure of the present invention is: an adjustable lifting herringbone ladder comprises two lifting ladders with hinged top ends, wherein each lifting ladder comprises a first ladder 1 and a second ladder 2, the first ladder 1 is sleeved in the second ladder 2 and can move along the extending direction of the second ladder 2; the first ladder 1 comprises first ladder supports 11 (side plates) and first ladder pedals 12, and the two parallel first ladder supports 11 are connected through a plurality of first ladder pedals 12; the second ladder 2 comprises second ladder supports 21 and second ladder pedals 22, and the two parallel second ladder supports 21 are connected through a plurality of second ladder pedals 22; the first ladder 1 is provided with a lifting mechanism for moving the second ladder 2 and a limiting mechanism 8 for limiting the movement of the second ladder (used for locking the first ladder 1 and the second ladder 2); but first 1 below both sides of ladder are equipped with lateral shifting's horizontal pole 3 respectively, and the tip of horizontal pole 3 is equipped with through nut 5 complex screw rod 4, and the axis of screw rod 4 is unanimous with the companion ladder extending direction.
Preferably, the lower end of the screw rod 4 is connected with the bottom plate 42 through a ball joint universal joint 41, and the upper end is provided with a hand wheel 43. The contact surface of the bottom plate 42 is large, so that large supporting force and friction force can be provided, the bottom plate 42 can have the largest contact surface with the ground through the ball joint universal joint 41, and the hand wheel 43 is convenient for an operator to rotate the screw rod 4.
Preferably, a rod sleeve matched with the cross rod 3 is arranged below the first ladder 1, a movable bolt 31 penetrating through the rod sleeve is arranged on the rod sleeve, and a plurality of insertion holes 32 matched with the bolt 31 are uniformly formed in the cross rod 3 along the extending direction of the cross rod. According to the practical situation, the pulling-out length of the cross rod 3 is selected to be appropriate, and the cross rod 3 is locked through the matching of the plug pin 31 and the jack 32 and cannot move along the rod sleeve, so that the reliability is guaranteed.
Preferably, the lifting mechanism comprises a first pull rope 6, one end of the first pull rope 6 is connected with the bottom end of the second ladder 2, and the other end of the first pull rope 6 returns to the ground after passing through a pulley 7 above the first ladder 1. An operator pulls one end of the first pull rope 6 to raise the second ladder 2 in the extending direction of the first ladder 1, and releases the second ladder 2 to lower the second ladder.
Preferably, the limiting mechanism 8 comprises a limiting rod 81 and a second pull rope 82, the side surface of the first ladder support 11 is provided with the limiting rod 81 which can move and penetrate through the side surface of the first ladder support, the outer side surface of the second ladder support 21 is evenly provided with a plurality of limiting holes 84 along the extending direction of the outer side surface, one end of the limiting rod 81 is matched with the limiting holes 84, the other end of the limiting rod is connected with the second pull rope 82, and the side surface of the first ladder support 11 is further provided with a compression spring 83 which enables the limiting rod 81 to tightly support the limiting holes 84. Through pulling second stay cord 82 one end, can make gag lever post 81 withdraw from spacing hole 84, do not play limiting displacement, second ladder 2 alright move along first ladder 1 extending direction, loosen second stay cord 82 after, pressure spring 83 just makes gag lever post 81 reset and compresses tightly.
Preferably, the first ladder frame 11 is provided at a side thereof with a plurality of door-shaped buckles 85 along the extending direction thereof for catching the second rope 82. Prevent the rope from being disordered.
Preferably, the inner side of the first ladder 1 is relatively provided with a clamping groove 13 matched with the first ladder support 11.
Preferably, the lower ends of the two elevators are connected through a safety rope 9 when opened for use.
When the novel herringbone ladder is used specifically, the herringbone ladder is placed at a place where the herringbone ladder is needed to be used, the second ladder 2 extends out through the lifting mechanism, and the herringbone ladder is locked through the limiting mechanism 8: when the ground is flat, the cross rod 3 is pulled out, the screw rod 4 is screwed out, the bottom of the cross rod is in contact with the ground, the screw rod 4 at the end part of the cross rod 3 is supported by the bottom of the first ladder 1, and the purpose is to enlarge the stress surface and enable the upper part of the herringbone ladder to be more stable; when the ground is not level, through the height of adjusting screw 4 separately and the height that one side second ladder 2 stretches out, guarantee the herringbone ladder top and guarantee the level basically, consequently this herringbone ladder can adapt to use under the pothole ground environment, is difficult for lodging, and stability is good.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present invention have been explained herein using specific examples, which are presented only to assist in understanding the methods and their core concepts. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes can be made without departing from the principle of the present invention, and the above technical features can be combined in a proper manner; the application of these modifications, variations or combinations, or the application of the concepts and solutions of the present invention in other contexts without modification, is not intended to be considered as a limitation of the present invention.
Claims (8)
1. An adjustable lifting herringbone ladder comprises two lifting ladders with hinged top ends, and is characterized in that each lifting ladder comprises a first ladder (1) and a second ladder (2), wherein the first ladder (1) is sleeved in the second ladder (2) and can move along the extension direction of the second ladder (2); the first ladder (1) comprises first ladder supports (11) and first ladder pedals (12), and the two parallel first ladder supports (11) are connected through a plurality of first ladder pedals (12); the second ladder (2) comprises second ladder supports (21) and second ladder pedals (22), and the two parallel second ladder supports (21) are connected through a plurality of second ladder pedals (22); the first ladder (1) is provided with a lifting mechanism for moving the second ladder (2) and a limiting mechanism (8) for limiting the movement of the second ladder; but first ladder (1) below both sides are equipped with lateral shifting's horizontal pole (3) respectively, and the tip of horizontal pole (3) is equipped with through nut (5) complex screw rod (4), and the axis and the companion ladder extending direction of screw rod (4) are unanimous.
2. The adjustable lifting herringbone ladder of claim 1, wherein the lower end of the screw rod (4) is connected with a bottom plate (42) through a ball joint (41), and the upper end of the screw rod is provided with a hand wheel (43).
3. The adjustable lifting herringbone ladder of claim 1, wherein a rod sleeve matched with the cross rod (3) is arranged below the first ladder (1), a bolt (31) which can move and penetrates through the rod sleeve is arranged on the rod sleeve, and a plurality of insertion holes (32) matched with the bolt (31) are uniformly formed in the cross rod (3) along the extending direction of the cross rod.
4. The adjustable lifting herringbone ladder of claim 1, wherein the lifting mechanism comprises a first pulling rope (6), one end of the first pulling rope (6) is connected with the bottom end of the second ladder (2), and the other end of the first pulling rope (6) returns to the ground after passing through a pulley (7) above the first ladder (1).
5. The adjustable lifting herringbone ladder of claim 1, wherein the limiting mechanism (8) comprises a limiting rod (81) and a second pull rope (82), the limiting rod (81) which can move and penetrates through the side surface of the first ladder support (11) is arranged on the side surface of the second ladder support (21), a plurality of limiting holes (84) are uniformly formed in the outer side surface of the second ladder support along the extending direction of the second ladder support, one end of the limiting rod (81) is matched with the limiting holes (84), the other end of the limiting rod is connected with the second pull rope (82), and a compression spring (83) which enables the limiting rod (81) to tightly press against the limiting holes (84) is further arranged on the side surface of the first ladder support (11).
6. An adjustable elevating herringbone ladder as claimed in claim 5, wherein said first ladder support (11) is provided with a plurality of gate-shaped buckles (85) along its extending direction for catching said second pulling rope (82) at the side thereof.
7. The adjustable lifting herringbone ladder of claim 1, wherein a clamping groove (13) matched with the first ladder support (11) is oppositely arranged on the inner side of the first ladder (1).
8. An adjustable elevating herringbone ladder as claimed in claim 1, wherein the lower ends of the two said ladders are connected through a safety rope (9) when opened for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920474000.3U CN209875031U (en) | 2019-04-10 | 2019-04-10 | Adjustable lifting herringbone ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920474000.3U CN209875031U (en) | 2019-04-10 | 2019-04-10 | Adjustable lifting herringbone ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209875031U true CN209875031U (en) | 2019-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920474000.3U Active CN209875031U (en) | 2019-04-10 | 2019-04-10 | Adjustable lifting herringbone ladder |
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| Country | Link |
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| CN (1) | CN209875031U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991653A (en) * | 2022-06-09 | 2022-09-02 | 淮北津奥铝业有限公司 | Aluminum alloy section bar |
-
2019
- 2019-04-10 CN CN201920474000.3U patent/CN209875031U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991653A (en) * | 2022-06-09 | 2022-09-02 | 淮北津奥铝业有限公司 | Aluminum alloy section bar |
| CN114991653B (en) * | 2022-06-09 | 2023-11-10 | 淮北津奥铝业有限公司 | Aluminum alloy section bar |
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