CN209875030U - Telescopic folding platform ladder - Google Patents
Telescopic folding platform ladder Download PDFInfo
- Publication number
- CN209875030U CN209875030U CN201920057269.1U CN201920057269U CN209875030U CN 209875030 U CN209875030 U CN 209875030U CN 201920057269 U CN201920057269 U CN 201920057269U CN 209875030 U CN209875030 U CN 209875030U
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- ladder
- telescopic
- frame
- seat
- ladder frame
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Abstract
The utility model discloses a telescopic folding platform ladder, which has two working states of opening and folding and can be telescopically adjusted in height, and comprises a herringbone ladder, a working platform, telescopic diagonal braces, a telescopic ladder frame and gravity self-locking trundles, wherein the working platform, the telescopic diagonal braces, the telescopic ladder frame and the gravity self-locking trundles are sequentially arranged on the herringbone ladder from top to bottom; the landing ends of the two ladder legs of the telescopic ladder frame are provided with gravity self-locking trundles. The utility model independently adjusts the respective height of the front ladder frame and the rear ladder frame from the ground through the telescopic ladder frame, and is suitable for uneven ground or steps, so that the whole ladder has a plurality of using heights; through gravity auto-lock truckle for whole ladder also can remove the ladder to operating position at will under the open mode, improves the practicality of ladder.
Description
Technical Field
The utility model relates to a ladder technical field, in particular to flexible platform ladder of folding up.
Background
The platform ladder is generally used for high-altitude operation, a platform above the platform ladder can be used for people to stand, but the existing platform is poor in protection performance, the phenomenon that an operator shakes due to unstable gravity center and even falls down to cause a safety accident due to side turning when taking articles often occurs, and the safety is generally low; in addition, the existing platform ladder is inconvenient to carry in an open state, two to three persons are needed to lift the platform ladder in the open state to a working position, and the efficiency of using the platform ladder for operation is low.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem to the defect that exists among the above-mentioned prior art, provide a flexible platform ladder of folding into to solve the problem that proposes among the above-mentioned background art.
In order to solve the technical problem, the utility model adopts the following technical scheme that the telescopic folding platform ladder has two working states of opening and folding and can be telescopically adjusted in height, comprises a herringbone ladder, a working platform, telescopic inclined struts, a telescopic ladder frame and gravity self-locking trundles, wherein the working platform, the telescopic inclined struts, the telescopic ladder frame and the gravity self-locking trundles are sequentially arranged on the herringbone ladder from top to bottom; the landing ends of the two ladder legs of the telescopic ladder frame are provided with gravity self-locking trundles.
As a further elaboration of the above technical solution:
in the technical scheme, the telescopic diagonal brace comprises a telescopic rod, a support rod and a lock rod unit, wherein the upper end of the telescopic rod is pivoted with a ladder leg of the rear ladder frame, the support rod is sleeved at the lower end of the telescopic rod, and a lock hoop for adjusting the tightness between the support rod and the telescopic rod is arranged at the upper end of the support rod; the lock rod unit comprises a limiting stopper and a fixing sleeve, the fixing sleeve is sleeved on the telescopic rod, the limiting stopper is composed of two connecting rods which are connected end to end, two ends of the limiting stopper are respectively pivoted with the ladder feet of the rear ladder frame and the telescopic rod, and the fixing sleeve is provided with a clamping block which is clamped with the middle part of the limiting stopper.
In the technical scheme, the ladder legs of the telescopic ladder frame are arranged on the outer sides of the herringbone ladder legs, connecting ends parallel to the herringbone ladder legs are arranged at the upper ends of the ladder legs of the telescopic ladder frame, a positioning switch unit is arranged between the connecting ends and the herringbone ladder legs and comprises positioning seats, inserting rods and a plurality of positioning holes, the positioning holes are arranged on the herringbone ladder legs at intervals, the positioning seats are fixed on the outer sides of the connecting ends, the inserting rods are inserted in the axes of the positioning seats and extend towards the herringbone ladder legs, one ends of the inserting rods are provided with cake-shaped holding portions on the outer sides of the positioning seats, the other ends of the inserting rods are inserted into corresponding positioning holes of the herringbone ladder legs according to the required height of the working platform, and positioning springs for pushing the inserting rods towards the herringbone ladder legs are arranged between the inserting rods and the positioning seats.
In the above technical solution, the distance between the two ladder legs of the telescopic ladder frame in the direction from the ladder leg connecting end to the grounding end is gradually increased.
In the technical scheme, the lower ends of the two ladder legs of the telescopic ladder frame arranged at the lower end of the rear ladder frame are respectively provided with a lateral caster used for hauling the platform ladder in the folded state.
In the technical scheme, flexible rail of converting into includes railing, bar and horizontal handle, the railing sets up the upper end of ladder frame in the front, the bar sets up in the front between ladder frame ladder foot and the railing, horizontal handle sets up between two bars, horizontal handle's one end and a bar pin joint, horizontal handle's the other end sets up to the expansion end, corresponding be provided with on a bar with the expansion end joint fall U style of calligraphy snap ring, be provided with the clamp splice of pressing from both sides tight expansion end on the snap ring, be provided with the torsional spring between clamp splice and the bar.
In the technical scheme, the gravity self-locking caster comprises a fixed seat, a spring, an elastic sheet and a caster seat with a pulley, wherein the fixed seat is fixed at the landing end of a ladder leg of the telescopic ladder frame; one end of the elastic sheet is arranged to be a fixed end fixedly connected with the fixed seat, the other end of the elastic sheet is arranged to be a movable end connected with the caster post, and a wedge locking structure is arranged between the movable end and the elastic sheet; the fixing seat is provided with a clamping seat for limiting the posture of the movable end of the elastic sheet.
In the technical scheme, the landing end of the ladder leg of the telescopic ladder frame is sleeved with the anti-skid rubber leg.
In the technical scheme, the length of the ladder foot of the front ladder frame is greater than that of the ladder foot of the rear ladder frame.
Compared with the prior art, the beneficial effects of the utility model reside in that: the whole ladder can be folded and folded, so that the storage and the transportation are convenient; the telescopic ladder frame is used for independently adjusting the respective ground clearance of the front ladder frame and the rear ladder frame, is suitable for uneven ground or on stairs, has multiple using heights, improves the practicability of the ladder, and is positioned and locked by the positioning switch unit to avoid clamping hands; the platform ladder is firmer and more stable and cannot be laterally turned by opening the telescopic diagonal brace with adjustable length, and the opening and closing state of the telescopic diagonal brace is limited by the lock rod unit, so that the telescopic diagonal brace is prevented from automatically opening and closing; the self-locking transverse handle is convenient to operate and is locked by the clamping block after being closed so as not to loosen; the anti-skid rubber feet have anti-skid effect, so that the ladder is firmly attached to the ground; the side casters are convenient to fold and drag or pull, so that the practicability is improved; the casters are self-locked by gravity, so that the whole ladder can be freely moved to a working position in an open state.
Drawings
Fig. 1 is a schematic perspective view of the open state of the present invention;
fig. 2 is a schematic front view of the open state of the present invention;
fig. 3 is an enlarged schematic view of part a of fig. 1 (the gravity self-locking caster is in a locking state).
In the figure: 11. a front ladder frame; 12. a rear ladder frame; 13. a working platform; 21. a support bar; 22. a locking band; 23. a telescopic rod; 24. a stopper; 25. a clamping block; 26. fixing a sleeve; 3. a telescopic ladder frame; 31. anti-skid rubber feet; 4. positioning seats; 41. a grip portion; 42. inserting a rod; 43. positioning holes; 5. lateral caster wheels; 61. a railing; 62. a grab rail; 63. a horizontal handle; 64. a snap ring; 65. a clamping block; 66. a torsion spring; 71. a fixed seat; 73. a chute; 8. a spring; 81. a spring plate; 82. a card holder; 9. a caster seat; 91. a pulley; 92. a caster post.
Detailed Description
The present invention will be described in further detail with reference to fig. 1 to 3.
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. 1-3, a telescopic folding platform ladder has two working states of opening and folding, and can be adjusted in height in a telescopic way, comprises a herringbone ladder, a working platform 13, telescopic inclined struts, telescopic ladder frames 3 and gravity self-locking castors, wherein the working platform 13, the telescopic inclined struts, the telescopic ladder frames 3 and the gravity self-locking castors are sequentially arranged on the herringbone ladder from top to bottom; the landing ends of two ladder legs of the telescopic ladder frame 3 are provided with gravity self-locking trundles.
The telescopic diagonal bracing comprises a telescopic rod 23, a support rod 21 and a lock rod unit, the upper end of the telescopic rod 23 is pivoted with the ladder leg of the rear ladder frame 12, the support rod 21 is sleeved at the lower end of the telescopic rod 23, and the upper end of the support rod 21 is provided with a lock hoop 22 for adjusting the tightness between the support rod 21 and the telescopic rod 23; the lock rod unit comprises a stopper 24 and a fixing sleeve 26, the fixing sleeve 26 is sleeved on the telescopic rod 23, the stopper 24 is composed of two connecting rods connected end to end, two ends of the stopper 24 are respectively pivoted with the ladder leg of the rear ladder frame 12 and the telescopic rod 23, and the fixing sleeve 26 is provided with a clamping block 25 clamped with the middle part of the stopper 24.
The ladder foot of the telescopic ladder frame 3 is arranged on the outer side of a herringbone ladder foot, a connecting end parallel to the herringbone ladder foot is arranged at the upper end of the ladder foot of the telescopic ladder frame 3, a positioning switch unit is arranged between the connecting end and the herringbone ladder foot and comprises a positioning seat 4, an inserting rod 42 and a plurality of positioning holes 43, the plurality of positioning holes 43 are arranged on the herringbone ladder foot at intervals, the positioning seat 4 is fixed on the outer side of the connecting end, the inserting rod 42 is inserted in the axis of the positioning seat 4 and extends towards the herringbone ladder foot, a cake-shaped holding part 41 is arranged at one end of the inserting rod 42 on the outer side of the positioning seat 4, the other end of the inserting rod 42 is inserted into one corresponding positioning hole 43 of the herringbone ladder foot according to the required height of the working platform 13, and a positioning spring 8 for pushing the inserting rod 42 towards the herringbone ladder foot is arranged between the inserting rod 42 and the positioning seat 4.
The distance between two ladder feet of the telescopic ladder frame 3 in the direction from the ladder foot connecting end to the grounding end is gradually increased.
The lower ends of two ladder legs of the telescopic ladder frame 3 arranged at the lower end of the rear ladder frame 12 are respectively provided with a lateral caster 5 for hauling the platform ladder in a folded state.
The telescopic folding fence comprises a handrail 61, handrail rods 62 and a transverse handle 63, wherein the handrail 61 is arranged at the upper end of the front ladder frame 11, the handrail rods 62 are arranged between ladder legs of the front ladder frame 11 and the handrail 61, the transverse handle 63 is arranged between the two handrail rods 62, one end of the transverse handle 63 is pivoted with one handrail rod 62, the other end of the transverse handle 63 is arranged to be a movable end, an inverted U-shaped clamp ring 64 clamped with the movable end is correspondingly arranged on one handrail rod 62, a clamping block 65 for clamping the movable end is arranged on the clamp ring 64, and a torsion spring 66 is arranged between the clamping block 65 and the handrail rod 62.
The gravity self-locking caster comprises a fixed seat 71, a spring 8, an elastic sheet 81 and a caster seat 9 with a pulley 91, wherein the fixed seat 71 is fixed at the landing end of a ladder leg of the telescopic ladder frame, the caster seat 9 is arranged below the fixed seat 71, a caster column 92 is arranged on the caster seat 9 in the direction of the fixed seat 71, an installation part inserted in the fixed seat 71 is arranged at the upper end of the caster column 92, the spring 8 is sleeved on the installation part, and a clamping part is arranged in the middle of the caster column 92; one end of the elastic sheet 81 is arranged as a fixed end fixedly connected with the fixed seat 71, the other end of the elastic sheet 81 is arranged as a movable end connected with the caster post 92, the movable end is provided with a clamping hole 72, and a wedge locking structure is arranged between the movable end and the elastic sheet 81; the fixed seat 71 is provided with a clamping seat 82 for limiting the posture of the movable end of the elastic sheet 81.
The landing end of the ladder foot of the telescopic ladder frame 3 is sleeved with an anti-skid rubber foot 31. The ladder foot length of the front ladder frame 11 is greater than that of the rear ladder frame 12.
The whole ladder can be folded and folded, so that the storage and the transportation are convenient; the respective ground clearance of the front ladder frame 11 and the rear ladder frame 12 is independently adjusted through the telescopic ladder frame 3, the telescopic ladder frame is suitable for the uneven ground or on a ladder, the practicability of the ladder is improved, the adjusted telescopic ladder frame 3 is positioned and locked through the positioning switch unit, and the clamping of hands is avoided; the platform ladder is firmer and more stable and cannot be laterally turned by opening the telescopic diagonal brace with adjustable length, and the opening and closing state of the telescopic diagonal brace is limited by the lock rod unit, so that the telescopic diagonal brace is prevented from automatically opening and closing; the operation is convenient through the self-locking transverse handle 63, and the locking is realized through the clamping block 65 after the locking is closed so as not to loosen; the anti-skid rubber feet 31 have anti-skid effect, so that the ladder is firmly attached to the ground; the side caster wheels 5 are convenient to fold and drag or pull, so that the practicability is improved; through gravity auto-lock truckle for whole ladder also can remove ladder to operating position at will under the open mode, improves the efficiency of using platform ladder operation.
Gravity self-locking caster self-locking process: move the stiff end of shell fragment 81 along spout 73 with cassette 82 on the gravity auto-lock truckle, step on the ladder back of marking time as the people, the platform ladder moves down under people's action of gravity, make the spring 8 shrink of gravity auto-lock truckle, make the ladder foot of telescopic ladder frame land, the relative fixing base 71 rebound of truckle seat 9, shell fragment 81 makes the expansion end tilt up toward truckle seat 9 direction under the effect of self elasticity, make shell fragment 81 card hole 72 and truckle post 92 joint portion between form slide wedge locking structure, utilize the frictional force between card hole 72 pore wall and the joint portion cylinder to make truckle post 92 and truckle seat 9 fix and realize locking at this high position, make truckle seat 9 can not the rebound and hold up the ladder, make the more firm placing of ladder at operating position.
When needs moving platform ladder, need cancel the auto-lock of gravity auto-lock truckle, the people gets off from the platform ladder, remove the expansion end of shell fragment 81 with cassette 82 on the gravity auto-lock truckle, make shell fragment 81 expansion end press from both sides between cassette 82 and fixing base 71, shell fragment 81 expansion end keeps the level, it realizes unblanking to have the contact between card hole 72 pore wall and the joint portion cylinder, make truckle seat 9 remove downwards under spring 8's effect, make four pulleys 91 land, make the ladder foot and the bracing piece of telescopic ladder frame liftoff, move ladder to operating position at will through promoting the platform ladder.
The above is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.
Claims (9)
1. A telescopic folding platform ladder is provided with two working states of opening and folding and is characterized by comprising a herringbone ladder, a working platform, telescopic inclined struts, a telescopic ladder frame and gravity self-locking trundles, wherein the working platform, the telescopic inclined struts, the telescopic ladder frame and the gravity self-locking trundles are sequentially arranged on the herringbone ladder from top to bottom; the landing ends of the two ladder legs of the telescopic ladder frame are provided with gravity self-locking trundles.
2. The telescopic folding platform ladder according to claim 1, wherein the telescopic diagonal brace comprises a telescopic rod, a support rod and a lock rod unit, the upper end of the telescopic rod is pivoted with the ladder leg of the rear ladder frame, the support rod is sleeved at the lower end of the telescopic rod, and a lock hoop for adjusting the tightness between the support rod and the telescopic rod is arranged at the upper end of the support rod; the lock rod unit comprises a limiting stopper and a fixing sleeve, the fixing sleeve is sleeved on the telescopic rod, the limiting stopper is composed of two connecting rods which are connected end to end, two ends of the limiting stopper are respectively pivoted with the ladder feet of the rear ladder frame and the telescopic rod, and the fixing sleeve is provided with a clamping block which is clamped with the middle part of the limiting stopper.
3. The telescopic folding platform ladder of claim 1, wherein the ladder legs of the telescopic ladder frame are arranged outside the ladder legs of the herringbone ladder, the upper ends of the ladder legs of the telescopic ladder frame are provided with connecting ends parallel to the ladder legs of the herringbone ladder, a positioning switch unit is arranged between the connecting ends and the ladder legs of the herringbone ladder, the positioning switch unit comprises a positioning seat, an inserted bar and a plurality of positioning holes, the positioning holes are arranged on the feet of the herringbone ladder at intervals, the positioning seat is fixed at the outer side of the connecting end, the inserted bar is inserted in the axis of the positioning seat and extends towards the feet of the herringbone ladder, one end of the inserted bar is provided with a cake-shaped holding part at the outer side of the positioning seat, the other end of the inserted bar is inserted into a corresponding positioning hole of the step foot of the herringbone ladder according to the required height of the working platform, and a positioning spring which pushes the inserted bar to the step foot direction of the herringbone ladder is arranged between the inserted bar and the positioning seat.
4. A telescopic folding platform ladder as claimed in claim 3, wherein the distance between the ladder legs increases gradually in the direction from the ladder leg connecting end to the landing end.
5. The telescopic folding platform ladder as claimed in claim 1, wherein the lower ends of the two legs of the telescopic ladder frame disposed at the lower end of the rear ladder frame are respectively provided with lateral casters for hauling the folding platform ladder.
6. The telescopic folding platform ladder according to claim 1, wherein the telescopic folding fence comprises handrails, handrails and a cross handle, the handrails are arranged at the upper end of the front ladder frame, the handrails are arranged between ladder legs of the front ladder frame and the handrails, the cross handle is arranged between the two handrails, one end of the cross handle is pivoted with one of the handrails, the other end of the cross handle is arranged to be a movable end, an inverted U-shaped clamping ring clamped with the movable end is correspondingly arranged on one of the handrails, a clamping block for clamping the movable end is arranged on the clamping ring, and a torsion spring is arranged between the clamping block and the handrails.
7. The telescopic folding platform ladder according to claim 1, wherein the gravity self-locking caster comprises a fixed seat, a spring, an elastic sheet and a caster seat with a pulley, the fixed seat is fixed at the landing end of a ladder leg of the telescopic ladder frame, the caster seat is arranged below the fixed seat, a caster column is arranged on the caster seat in the direction of the fixed seat, an installation part inserted in the fixed seat is arranged at the upper end of the caster column, the spring is sleeved on the installation part, and a clamping part is arranged in the middle of the caster column; one end of the elastic sheet is arranged to be a fixed end fixedly connected with the fixed seat, the other end of the elastic sheet is arranged to be a movable end connected with the caster post, and a wedge locking structure is arranged between the movable end and the elastic sheet; the fixing seat is provided with a clamping seat for limiting the posture of the movable end of the elastic sheet.
8. The telescopic folding platform ladder as claimed in claim 1, wherein the landing end of the ladder leg of the telescopic ladder frame is sleeved with an anti-slip rubber leg.
9. The telescopic folding platform ladder of claim 1, wherein the ladder leg length of the front ladder frame is greater than the ladder leg length of the rear ladder frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920057269.1U CN209875030U (en) | 2019-01-14 | 2019-01-14 | Telescopic folding platform ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920057269.1U CN209875030U (en) | 2019-01-14 | 2019-01-14 | Telescopic folding platform ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209875030U true CN209875030U (en) | 2019-12-31 |
Family
ID=68950867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920057269.1U Active CN209875030U (en) | 2019-01-14 | 2019-01-14 | Telescopic folding platform ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209875030U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530427A (en) * | 2021-08-13 | 2021-10-22 | 苏州中创铝业有限公司 | A supporter and platform ladder for platform ladder |
-
2019
- 2019-01-14 CN CN201920057269.1U patent/CN209875030U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113530427A (en) * | 2021-08-13 | 2021-10-22 | 苏州中创铝业有限公司 | A supporter and platform ladder for platform ladder |
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