CN116556820A - High-safety telescopic folding ladder - Google Patents
High-safety telescopic folding ladder Download PDFInfo
- Publication number
- CN116556820A CN116556820A CN202310389643.9A CN202310389643A CN116556820A CN 116556820 A CN116556820 A CN 116556820A CN 202310389643 A CN202310389643 A CN 202310389643A CN 116556820 A CN116556820 A CN 116556820A
- Authority
- CN
- China
- Prior art keywords
- rod
- rods
- folding
- fixing frame
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011324 bead Substances 0.000 claims description 7
- 239000004677 Nylon Substances 0.000 claims description 2
- 229920001778 nylon Polymers 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 1
- 230000009194 climbing Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/14—Ladders capable of standing by themselves
- E06C1/16—Ladders capable of standing by themselves with hinged struts which rest on the ground
- E06C1/18—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as ladders
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
- E06C1/383—Foldable ladders in which the longitudinal members are brought together on folding
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
- E06C1/39—Ladders having platforms; Ladders changeable into platforms
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
- E06C1/397—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders characterised by having wheels, rollers, or runners
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/02—Extending means
- E06C7/04—Hand-operated extending means carried by the ladder
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/18—Devices for preventing persons from falling
- E06C7/181—Additional gripping devices, e.g. handrails
- E06C7/183—Additional gripping devices, e.g. handrails situated along the ladder
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/42—Ladder feet; Supports therefor
- E06C7/423—Ladder stabilising struts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Abstract
The invention provides a high-safety telescopic folding ladder, which comprises an upper frame, a lower frame and a protection mechanism, wherein the upper frame and the lower frame form a main body structure of the folding ladder, the upper frame and the lower frame are matched with each other through a first fixing frame, a second fixing frame, a third fixing frame and a fixing clamp, the folding lifting ladder can be used for folding, lifting and keeping stability, and the protection mechanism is arranged on the upper frame and is mainly used for providing safety protection for workers. The invention can prevent the body of the staff from being unbalanced and falling when the staff ascends; the folding telescopic design enables the folding ladder to be more portable and occupies smaller space when being placed; the stability is strong, and the safety is improved; the bottom pulley is arranged to facilitate the movement of the ladder; the folding ladder can be used singly or in combination, and can be suitable for various height spaces.
Description
Technical Field
The invention relates to the technical field of climbing tools, in particular to a high-safety telescopic folding ladder.
Background
In the production and life processes, the climbing operation is often required, tools frequently used in the climbing operation comprise a single ladder and a folding ladder, the existing single ladder or folding ladder is slightly insufficient in design in terms of safety, the climbing operation also needs to be frequently moved in position, particularly the operation with higher height, and the ladder is required to be safe to use and convenient to move.
The existing high-altitude operation is usually realized by using a scaffold, but the existing scaffold has a plurality of defects, and has poor safety and great potential safety hazard; the occupied space is relatively large; heavy weight, difficult movement and the like.
Disclosure of Invention
In order to solve the problems existing in the prior art, the embodiment of the invention provides a high-safety telescopic folding ladder, which comprises an upper frame (1), a lower frame (2) and a protection mechanism (3), wherein the upper frame (1) comprises two short upper rods, two long upper rods, a first fixing frame (11), a second fixing frame (12), a pedal (13) and a fixing clamp (14), the lower frame (2) comprises four lower rod main rods (21), a supporting rod (22) and a third fixing frame (23), and the protection mechanism (3) comprises a handrail rod (31), a first protection rod (32), a first protection belt (34), a second protection belt (35) and a platform pedal (36); the short upper rods and the long upper rods are movably connected with four lower rod main rods (21) through fixing clamps (14), the tops of the short upper rods are rotatably connected with the left end of a first fixing frame (11) through shaft pins, the right end of the first fixing frame (11) is rotatably connected with the long upper rods through shaft pins, the two ends of a second fixing frame (12) are rotatably connected with the outer sides of the fixing clamps (14) on the left side and the right side through shaft pins, pedals (13) are respectively arranged between the two short upper rods, between the two long upper rods and between the lower rod main rods (21) in a penetrating manner, pedal holes (131) are formed at the two ends of each pedal (13), through holes are formed in the outer sides of parts of the fixing clamps (14) for clamping the short upper rods and the long upper rods, the size of pedal holes (131) at two ends of the pedal (13) is the same, square pins (141) are arranged in the through holes, the part of the fixing clamp (14) clamping the lower rod main rod (21) is welded with the lower rod main rod (21), two ends of the third fixing frame (23) are rotationally connected below the lower rod main rod (21) through shaft pins and close to the bottom, the top ends of the supporting rods (22) are rotationally connected to the outer sides of the lower rod main rod (21), a sawtooth adjusting rod (225) is arranged between the supporting rods (22) and the lower rod main rod (21), the grab bar (31) is arranged at the upper parts of the two long upper rods, the first guard bar (32) is arranged above the two long upper rods, and the tip is connected with the top of grab rail (31) through folding movable joint, second guard bar (34) set up in the top of two short upper bars, and the tip is connected through folding movable joint and grab rail (31) middle part upper position rotation, platform footboard (36) set up in top second footboard (13) top, and the tip is connected through folding movable joint and grab rail (31) intermediate position rotation, first guard bar (33) are installed between first guard bar (32) both ends, second guard bar (35) are installed between second guard bar (34) both ends.
In an alternative embodiment, the second fixing frame (12) is of a folding structure, and a plurality of fixing holes are formed in two ends of the second fixing frame.
In an alternative embodiment, the pedal (13) is of square tube structure.
In an alternative embodiment, a top bead (1411) is arranged on the square pin (141), and a spring is arranged below the top bead (1411).
In an alternative embodiment, a cross rod is arranged between the bottom ends of the two lower rod main rods (21) corresponding to each other, and pulleys are arranged at the two ends of the bottom of the cross rod.
In an alternative embodiment, the supporting rod (22) is of a loop rod structure, and comprises an upper supporting rod (221) and a lower supporting rod (222), the top end of the upper supporting rod (221) is rotatably connected to the outer side of the lower rod main rod (21) through an upper movable joint (223), the fixed end of the upper movable joint (223) is arranged on two side frames of the lower rod main rod (21), the movable end is connected with the top end of the upper supporting rod (221), and a pulley is arranged at the bottom end of the supporting rod (22).
In an alternative embodiment, the bottom end of the sawtooth adjusting rod (225) is rotationally connected to the outer side of the lower rod main rod (21) through a lower movable joint (224), the fixed end of the lower movable joint (224) is installed on two side frames of the lower rod main rod (21), the movable end is connected with the top end of the sawtooth adjusting rod (225), a plurality of tooth-shaped grooves (2251) are formed in the sawtooth adjusting rod (225), and fastening bolts matched with the tooth-shaped grooves (2251) are arranged on the side face of the supporting rod (22).
In an alternative embodiment, the third fixing frame (23) is of a folding structure, and two ends of the third fixing frame are provided with a plurality of fixing holes.
In an alternative embodiment, the first safety belt (33) and the second safety belt (35) are made of high-strength nylon, one end of the first safety belt (33) is fixed on the first guard bar (32), the other end of the first safety belt is connected with the other side of the first guard bar (32) through a folding buckle, one end of the second safety belt (35) is fixed on the second guard bar (34), and the other end of the second safety belt is connected with the other side of the second guard bar (34) through a folding buckle.
In an alternative embodiment, the platform deck (36) is a box mechanism.
Compared with the prior art, the invention has the beneficial effects that:
the invention can provide safety protection for staff during climbing and operation, and prevent the body from being unbalanced and falling during climbing operation; the folding telescopic design enables the folding ladder to be more portable and occupies smaller space when being placed; the stability is strong, and the safety is improved; the bottom pulley is arranged to facilitate the movement of the ladder; the folding ladder can be used singly or in combination, and can be suitable for various height spaces.
Drawings
Embodiments of the high safety telescopic folding ladder of the present invention are described below with reference to the accompanying drawings. The attached drawings are as follows:
fig. 1 is a schematic diagram of the overall structure of a high-safety telescopic folding ladder provided by the invention;
FIG. 2 is a schematic diagram of the portion A in FIG. 1;
FIG. 3 is a schematic view of the portion B in FIG. 1;
FIG. 4 is a schematic view of the portion C in FIG. 1;
FIG. 5 is a schematic view of a square pin configuration;
FIG. 6 is a schematic diagram of the portion D in FIG. 1;
fig. 7 is a schematic structural diagram of the portion E in fig. 1.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if there is a directional indication (such as up, down, left, right, front, rear.
Furthermore, if the description of "first," "second," etc. is referred to in this disclosure, it is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The following describes in detail the implementation of the present invention in connection with specific embodiments:
referring to fig. 1-4, the high-safety telescopic folding ladder provided by the embodiment of the invention comprises an upper frame (1), a lower frame (2) and a protection mechanism (3), wherein the upper frame (1) comprises two short upper rods, two long upper rods, a first fixing frame (11), a second fixing frame (12), a pedal (13) and a fixing clamp (14), the lower frame (2) comprises four lower rod main rods (21), a supporting rod (22) and a third fixing frame (23), and the protection mechanism (3) comprises a grab rail (31), a first protection rod (32), a first protection belt (33), a second protection belt (34), a second protection belt (35) and a platform pedal (36);
the upper frame (1) can slide from top to bottom relative to the lower frame (2), specifically, short upper rod and long upper rod all pass through fixation clamp (14) and four lower rod mobile jib (21) swing joint, short upper rod top is connected with first mount (11) left end rotation through the pivot, first mount (11) right-hand member is connected with long upper rod rotation through the pivot for the relative position of fixed short upper rod and long upper rod, second mount (12) both ends are connected in left and right sides fixation clamp (14) outside through the pivot rotation, second mount (12) are beta structure, and both ends are equipped with a plurality of fixed orifices for adjust the width that opens and shuts that should close the ladder, all wear to be equipped with footboard (13) between two short upper rods, between two long upper rods and between lower rod mobile jib (21), footboard (13) are square tube structure, footboard (13) both ends are equipped with footboard hole (131), the outside that fixation clamp (14) centre gripping short upper rod and long upper rod are equipped with through-hole (131), and the outside of fixed clamp (141) can be equipped with the fixed pin (141) in the same square upper rod (13) and the mobile jib (1) with the fixed clamp (141) and the same size of the lower rod mobile jib (141) relative to the inside fixed clamp (1) and the mobile jib that the mobile jib is fixed in the square upper frame (1) The upper and lower positions of the lower frame (2) are opposite, the square pins (141) are provided with top beads (1411), springs are arranged below the top beads (1411) to enable the top beads to extend out of the surfaces of the square pins (141) all the time elastically, the square pins (141) are ensured not to fall off when inserted into pedal holes (131), and when the relative positions of the upper frame (1) and the lower frame (2) are required to be adjusted, pull rings holding the square pins (141) are pulled outwards;
the lower frame (2) is a main supporting structure of the ladder, a cross rod is arranged between the bottoms of the two corresponding lower rod main rods (21), pulleys are arranged at the two ends of the bottom of the cross rod, two ends of the third fixing frame (23) are rotatably connected below the lower rod main rods (21) through shaft pins and close to the bottom, the ladder is of a folding structure, a plurality of adjusting holes are formed in the lower frame and are used for adjusting the distance between the two lower rod main rods (21), the top ends of the supporting rods (22) are rotatably connected to the outer sides of the lower rod main rods (21), the supporting rods (22) are diagonal braces of the ladder and prevent the ladder from swaying to the side, the supporting rods (22) are of a sleeve rod structure and comprise an upper supporting rod (221) and a lower supporting rod (222), the supporting angle is adjusted by adjusting the relative lengths of the upper rod and the lower rod, the upper supporting rods are fixed through shaft pins, the top ends of the upper supporting rod (221) are rotatably connected to the outer sides of the lower rod main rods (21) through upper joints (223), the fixed ends of the upper joints (223) are arranged on side frames of the two sides of the lower rod main rods (21), the movable ends of the upper joints (22) are connected to the upper ends of the supporting rods (221) through the upper rods (221), the lower rods (225) are connected with the lower rods (21) through the pulleys (224), the fixed end of the lower movable joint (224) is arranged on two side frames of the lower rod main rod (21), the movable end is connected with the top end of the sawtooth adjusting rod (225), the upper movable joint (223) and the lower movable joint (224) are similar to a universal joint structure and can be adjusted at multiple angles, a plurality of tooth-shaped grooves (2251) are formed in the sawtooth adjusting rod (225), fastening bolts matched with the tooth-shaped grooves (2251) are arranged on the side surfaces of the supporting rods (22), and the fastening bolts are clamped into different tooth-shaped grooves (2251) by adjusting the angle of the supporting rods (22);
the protection mechanism (3) is arranged above the upper frame (1) and is mainly used for protecting workers, the workers are prevented from falling due to unbalance of the body during ascending operation, the grab bar (31) is arranged at the upper parts of the two long upper bars and is used for supporting the workers with hands during ascending operation, the first protection bar (32) is arranged above the two long upper bars, the height of the first protection bar is equal to the upper chest of the workers, the end part of the first protection bar is rotatably connected with the top end of the grab bar (31) through a folding joint, the second protection bar (34) is arranged above the two short upper bars and is just blocked at the leg position of the workers, the lower part of the head of the second protection bar is supported by the pedal (13), the end part of the second protection bar is rotatably connected with the middle part of the grab bar (31) through a folding joint, the platform pedal (36) is arranged above the second pedal (13), the front part of the platform pedal (36) is a box-shaped mechanism, the end part of the platform pedal (36) is rotatably connected with the middle position of the grab bar (31) through the folding joint, the first protection bar (33) is fixedly connected with the second protection bar (33) through the first protection bar (33) at the other end, the second protection bar (33) is fixedly connected with the second protection bar (33) at the other end of the first protection bar (33) through the first protection bar (35), the second protection bar (33) is fixedly connected with the second protection bar (33) at the other end, one end of the second safety belt (35) is fixed on the second guard bar (34), and the other end of the second safety belt is connected with the other side of the second guard bar (34) through a folding buckle.
When working personnel perform ascending operation, the high-safety telescopic folding ladder is moved to an operation position, then the height according to the operation position is adjusted, the folding ladder is firstly transversely placed on the ground, the square pins (141) are pulled out, the relative positions of the upper frame (1) and the lower frame (2) are pulled, the folding ladder reaches the operation height, the upper square pins (141) are inserted to lock the upper frame (1) and the lower frame (2), the pin hole position of the second fixing frame (12) is determined according to the opening and closing width, then the lower frame (2) is pulled out for a distance, the second fixing frame (12) is fixed, the third fixing frame (23) is fixed, then the first protection rod (32), the second protection rod (34) and the platform pedal (36) are horizontally placed, the folding buckles of the first protection belt (33) and the second protection belt (35) are unfastened, then the folding ladder is erected, the length of the folding ladder is respectively adjusted, the toothed groove position and the integral angle of the adjusting rod (225) are respectively adjusted, the toothed groove and the fastening bolt are fastened, the bottom of the fastening pulley is fastened, and then the first protection belt (35) is fastened, and the working personnel begin to clamp the platform (35).
Embodiments of the present invention so far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will fall within the scope of the present invention.
Claims (10)
1. The utility model provides a high security flexible folding ladder, includes frame (1), lower frame (2) and protection machanism (3), its characterized in that: the upper frame (1) comprises two short upper rods, two long upper rods, a first fixing frame (11), a second fixing frame (12), a pedal (13) and a fixing clamp (14), the lower frame (2) comprises four lower rod main rods (21), a supporting rod (22) and a third fixing frame (23), and the protection mechanism (3) comprises a grab rail (31), a first protection rod (32), a first protection belt (33), a second protection rod (34), a second protection belt (35) and a platform pedal (36); the short upper rods and the long upper rods are movably connected with four lower rod main rods (21) through fixing clamps (14), the tops of the short upper rods are rotatably connected with the left end of a first fixing frame (11) through shaft pins, the right end of the first fixing frame (11) is rotatably connected with the long upper rods through shaft pins, the two ends of a second fixing frame (12) are rotatably connected with the outer sides of the fixing clamps (14) on the left side and the right side through shaft pins, pedals (13) are respectively arranged between the two short upper rods, between the two long upper rods and between the lower rod main rods (21) in a penetrating manner, pedal holes (131) are formed at the two ends of each pedal (13), through holes are formed in the outer sides of parts of the fixing clamps (14) for clamping the short upper rods and the long upper rods, the size of pedal holes (131) at two ends of the pedal (13) is the same, square pins (141) are arranged in the through holes, the part of the fixing clamp (14) clamping the lower rod main rod (21) is welded with the lower rod main rod (21), two ends of the third fixing frame (23) are rotationally connected below the lower rod main rod (21) through shaft pins and close to the bottom, the top ends of the supporting rods (22) are rotationally connected to the outer sides of the lower rod main rod (21), a sawtooth adjusting rod (225) is arranged between the supporting rods (22) and the lower rod main rod (21), the grab bar (31) is arranged at the upper parts of the two long upper rods, the first guard bar (32) is arranged above the two long upper rods, and the tip is connected with the top of grab rail (31) through folding movable joint, second guard bar (34) set up in the top of two short upper bars, and the tip is connected through folding movable joint and grab rail (31) middle part upper position rotation, platform footboard (36) set up in top second footboard (13) top, and the tip is connected through folding movable joint and grab rail (31) intermediate position rotation, first guard bar (33) are installed between first guard bar (32) both ends, second guard bar (35) are installed between second guard bar (34) both ends.
2. The high-safety telescopic folding ladder according to claim 1, wherein the second fixing frame (12) is of a folding structure, and a plurality of fixing holes are formed in two ends of the second fixing frame.
3. The high-safety telescopic folding ladder according to claim 1, characterized in that the tread (13) is of square tube construction.
4. The high-safety telescopic folding ladder according to claim 1, characterized in that a top bead (1411) is arranged on the square pin (141), and a spring is arranged below the top bead (1411).
5. The high-safety telescopic folding ladder according to claim 1, wherein a cross rod is arranged between the bottom ends of the front and rear corresponding two lower rod main rods (21), and pulleys are arranged at two ends of the bottom of the cross rod.
6. The high-safety telescopic folding ladder according to claim 1, wherein the supporting rod (22) is of a sleeve rod structure and comprises an upper supporting rod (221) and a lower supporting rod (222), the top end of the upper supporting rod (221) is rotatably connected to the outer side of the lower rod main rod (21) through an upper movable joint (223), the fixed end of the upper movable joint (223) is arranged on two side frames of the lower rod main rod (21), the movable end is connected with the top end of the upper supporting rod (221), and a pulley is arranged at the bottom end of the supporting rod (22).
7. The high-safety telescopic folding ladder according to claim 1, wherein the bottom end of the sawtooth adjusting rod (225) is rotatably connected to the outer side of the lower rod main rod (21) through a lower movable joint (224), the fixed end of the lower movable joint (224) is arranged on two side frames of the lower rod main rod (21), the movable end of the lower movable joint is connected with the top end of the sawtooth adjusting rod (225), a plurality of tooth-shaped grooves (2251) are formed in the sawtooth adjusting rod (225), and fastening bolts matched with the tooth-shaped grooves (2251) are arranged on the side face of the supporting rod (22).
8. The high-safety telescopic folding ladder according to claim 1, wherein the third fixing frame (23) is of a folding structure, and a plurality of fixing holes are formed at two ends of the third fixing frame.
9. The high-safety telescopic folding ladder according to claim 1, wherein the first safety belt (33) and the second safety belt (35) are made of high-strength nylon, one end of the first safety belt (33) is fixed on the first guard bar (32), the other end of the first safety belt is connected with the other side of the first guard bar (32) through a folding buckle, one end of the second safety belt (35) is fixed on the second guard bar (34), and the other end of the second safety belt is connected with the other side of the second guard bar (34) through a folding buckle.
10. The high security telescoping folding ladder of claim 1, wherein said platform deck (36) is a box mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310389643.9A CN116556820A (en) | 2023-04-13 | 2023-04-13 | High-safety telescopic folding ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310389643.9A CN116556820A (en) | 2023-04-13 | 2023-04-13 | High-safety telescopic folding ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116556820A true CN116556820A (en) | 2023-08-08 |
Family
ID=87490735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310389643.9A Pending CN116556820A (en) | 2023-04-13 | 2023-04-13 | High-safety telescopic folding ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116556820A (en) |
-
2023
- 2023-04-13 CN CN202310389643.9A patent/CN116556820A/en active Pending
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