LU504027B1 - Movable tool-type herringbone ladder - Google Patents

Movable tool-type herringbone ladder Download PDF

Info

Publication number
LU504027B1
LU504027B1 LU504027A LU504027A LU504027B1 LU 504027 B1 LU504027 B1 LU 504027B1 LU 504027 A LU504027 A LU 504027A LU 504027 A LU504027 A LU 504027A LU 504027 B1 LU504027 B1 LU 504027B1
Authority
LU
Luxembourg
Prior art keywords
ladder
movable
movable tool
backing plate
herringbone ladder
Prior art date
Application number
LU504027A
Other languages
French (fr)
Inventor
Xinyu Ma
Guangquan Li
Yingfang Ma
Wei Liu
Jian Yu
Tong Li
Shixin Kang
Xianpan Xu
Keqiang Wang
Qiqian Wang
Kaiqiang Cheng
Xiang Wen
Yanbin Lu
Xiaochen Zhang
Xin Hu
Original Assignee
China Constr Municipal Eng Corp Ltd
China Constr First Group Corp Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China Constr Municipal Eng Corp Ltd, China Constr First Group Corp Ltd filed Critical China Constr Municipal Eng Corp Ltd
Application granted granted Critical
Publication of LU504027B1 publication Critical patent/LU504027B1/en

Links

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
    • E06C1/39—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
    • E06C1/39—Ladders having platforms; Ladders changeable into platforms
    • E06C1/393—Ladders having platforms foldable with the ladder
    • 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
    • E06C7/08—Special construction of longitudinal members, or rungs or other treads
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/14—Holders for pails or other equipment on or for ladders

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)

Abstract

The present disclosure discloses a movable tool-type herringbone ladder, wherein the movable tool-type herringbone ladder comprise: two ladder assemblies, one end being fixedly connected to a bottom surface of the backing plate and the other end obliquely extending to a bottom surface; transversal braces, which are respectively connected to the two ladder assemblies at a lower side away from the backing plate, so that a triangular structure is formed by the two ladder assemblies and each transversal brace; a pair of posts, one end of the post being vertically fixed to a bottom part of the backing plate and the posts being between the two ladder assemblies; a center shaft, which comprises a metallic casing and a rotatable bone axis at least partially encased inside the metallic casing, the metallic casing being fixed to the other end of the posts away from the backing plate and the rotatable bone axis being internally installed inside the metallic casing; a fixed footboard, which is fixedly connected to the metallic casing and is kept to be horizontal; a movable footboard, which is fixedly connected to the rotatable bone axis and obliquely extends upwards; and a movable supporting assembly, of which one end is vertically fixed to the movable footboard and the other end obliquely extends to the bottom surface. The movable tool-type herringbone ladder can be controlled by operators themselves so as to move in a horizontal direction; moreover, the movable tool-type herringbone ladder is firm and reliable.

Description

Specification 2027
MOVABLE TOOL-TYPE HERRINGBONE LADDER
Technical Field
The present disclosure relates to the technical field of ladder, in particular to a movable tool-type herringbone ladder.
Background Art
Herringbone ladders are a kind of climbing tool used in operation in space (e.g., roofs, high walls and so on) above the plane. When a herringbone ladder 1s used, a triangle 1s formed by the front and rear ladder poles and the ground, which makes the ladder looks herringbone, so it is figuratively called a “herringbone ladder”.
Herringbone ladders are light and stable, and have high strength. Nowadays, due to advantages of being light, beautiful and durable, herringbone ladders made of aluminum alloy have gradually taken the place of traditional ones made of wood, and have been widely used in construction engineering, interior decoration, aerial photography, storage and other fields.
However, following the rapid development of various industries and fields, the workload of operation at high space is increasing, so traditional herringbone ladders cannot meet people’s needs for operational functions of climbing tools. For instance, most herringbone ladders with a traditional structure or pattern cannot be moved when they are in use, so an operator often has to move a herringbone ladder to a next working area after finishing the work in one area and has to climb the herringbone ladder again, as a result, the operator’s work is made strenuous and cumbersome by handling of the herringbone ladder, and it 1s impossible to keep the operation efficient and continuous.
The above-mentioned information disclosed in the part of Background Art is merely for better understanding of the background of the present disclosure, and 1
Specification —_— 504027 thus may include information that does not constitute prior art commonly known to ordinary technicians in this field.
Summary of the Utility Model
The object of the present disclosure is to provide a movable tool-type herringbone ladder, which can be horizontally moved under the control of an operator, as well as can provide a more comfortable and secure operating environment. Relative to existing herringbone ladders, the present disclosure saves both time and effort for operation at high space.
To realize the afore-mentioned object, the technical solution provided in the present disclosure 1s as follows.
A movable tool-type herringbone ladder in the present disclosure, comprising: a seat plate; a backing plate, which is fixedly laid on a bottom surface of the seat plate, two ladder assemblies, one end being fixedly connected to a bottom surface of the backing plate and the other end obliquely extending to a bottom surface, and the two ladder assemblies forming a herringbone ladder structure, rollers, which are movably provided at a bottom part of the ladder assemblies, transversal braces, which are respectively connected to the two ladder assemblies at a lower side away from the backing plate so that a triangular structure is formed by the two ladder assemblies and each transversal brace, a pair of posts, one end of the post being vertically fixed to a bottom part of the backing plate and the posts being between the two ladder assemblies, a center shaft, which comprises a metallic casing and a rotatable bone axis at least partially encased inside the metallic casing, the metallic casing being fixed to the other end of the posts away from the backing plate and the rotatable bone axis being internally installed inside the metallic casing, a fixed footboard, which is fixedly connected to the metallic casing and is kept to be horizontal, 2
Specification 2027 a movable footboard, which is fixedly connected to the rotatable bone axis and obliquely extends upwards, and a movable supporting assembly, of which one end is vertically fixed to the movable footboard and the other end obliquely extends to the bottom surface, a bottom part of the other end of the movable supporting assembly being provided with braking devices.
In the movable tool-type herringbone ladder, the seat plate is a plate-like structure with a horizontal top surface.
In the movable tool-type herringbone ladder, the ladder assembly comprises: a pair of oblique braces, one end being fixedly connected to the bottom surface of the backing plate and the other end obliquely extending towards the ground, a longitudinal brace, of which a top surface is connected to the other end of the pair of oblique braces and a bottom surface is connected with the rollers, and a plurality of steps, which are distributed between the backing plate and the longitudinal brace, two ends of each step being connected to the pair of oblique braces.
In the movable tool-type herringbone ladder, the longitudinal brace, the pair of oblique braces and the backing plate form a parallelogram structure.
In the movable tool-type herringbone ladder, one end of an angle brace is connected to the oblique brace at an angle of 45°, and the other end is connected to the longitudinal brace at an angle of 45°.
In the movable tool-type herringbone ladder, the movable supporting assembly comprises: a pair of oblique braces, one end being vertically and fixedly connected to the movable footboard, and the other end obliquely extending towards the ground and being provided with a braking device, and a plurality of reinforcement braces, both ends of each being connected to the pair of oblique braces. 3
Specification 4027
In the movable tool-type herringbone ladder, the braking device is an arc-shaped rubber friction block.
In the movable tool-type herringbone ladder, the metallic casing encases the rotatable bone axis by half.
In the movable tool-type herringbone ladder, height of the posts is no smaller than 1/5 of that of the seat plate.
In the movable tool-type herringbone ladder, the fixed footboard horizontally extends into the ladder assembly.
In the above-mentioned technical solution, a movable tool-type herringbone ladder provided in the present disclosure has the following beneficial effects: the movable tool-type herringbone ladder can meet the needs of moving the herringbone ladders by themselves for all kinds of operators at high space, and can save tedious and frequent process of herringbone ladder handling, thereby promoting working efficiency of operators, and reducing consumption and waste of manpower caused by herringbone ladder handling during traditional operation at high space; the movable tool-type herringbone ladder provided in the present disclosure is light, and is excellent in strength and corrosion resistance, so it has a simple structure and low cost, and is durable; safety requirements for climbing tools of all kinds of operation at high space can be satisfied; on the premise of ensuring overall stability, fastness and reliability of the structure, a seat plate and a footboard are additionally provided; for traditional herringbone ladders, operators mostly need to stand on the steps while working, while the present disclosure enables the operators working at high space to stably sit on the additionally provided seat plate with their feet being put on the footboard, and thus enables the operators to work in a more secure and steady gesture at high space; instability of climbing tools caused by big move of workers can be avoided during the process of operation; the present disclosure is suitable for development of climbing tools, and can reduce the amount of manual labor. 4
Specification —_— 504027
Brief Description of Drawings
In order to better explain technical solutions in the embodiments of the present disclosure or in prior art, drawings to be used in the embodiments will be briefly introduced below. Obviously, the following described drawings are merely some of the embodiments disclosed in the present disclosure, and one skilled in the art can further obtain other drawings based on these ones.
Fig. 1 is a structure diagram of the movable tool-type herringbone ladder in one example of the present disclosure.
Fig. 2 1s a top view showing the structure of the movable tool-type herringbone ladder in one example of the present disclosure.
Fig. 3 is a structure diagram of the movable tool-type herringbone ladder in one example of the present disclosure.
Embodiments
In order to make the object, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be definitely and completely described with reference to the drawings in the embodiments of the present disclosure.
Apparently, the described embodiments are merely part of embodiments of the present disclosure, rather than all. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative efforts belong to the scope of protection contained in the present disclosure.
Therefore, the following detailed description provided in the drawings about the embodiments of the present disclosure merely represent embodiments selected in the present disclosure, rather than limiting the scope of protection claimed by the present disclosure. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative efforts belong to the scope of protection contained in the present disclosure.
Specification —_— 504027
It should be noted: similar numbers and letters indicate similar parts in the drawings below. Therefore, once a part 1s defined in a drawing, it will not be further defined and explained in subsequent drawings.
In the description of the present invention, it should be understood that locations or position relationships indicated by “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “behind”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “anticlockwise” and other terms are the locations or position relationships indicated based on the drawings, and are merely for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the apparatus or element has to be in a specific location, or configured or operated at a specific location, and thus should not be understood as limits to the present disclosure.
Besides, the terms “first” and “second” are merely used for the purpose of description, and cannot be understood as indication or implication of relative significance, or implicit indication of the number of indicated technical features. As a result, features limited by “first” and “second” may clearly or implicitly indicate one or more of such features. Unless otherwise specified, the meaning of “plural” in the description of the present disclosure refers to two or more.
Unless otherwise specified or limited, “mount”, “interconnect”, “connect”, “fix” and other terms in the present disclosure should be understood in a broad sense, for instance, the parts can be fixedly or detachably connected, or can be integrated as one piece; they can be directly connected, and can also be indirectly connected via an intermediation, or can be a connection inside two elements or the interaction of two elements. For one skilled in the art, the meaning of the afore-mentioned terms in the present disclosure can be understood according to specific situations.
Unless otherwise specified or limited, the case in the present disclosure where a first feature is “on/above” or “under/below” a second feature may include the 6
Specification —_— 504027 case where the first feature and the second feature are in direct contact, and may also include the case where the first feature and the second feature are not in direct contact but are in contact via another feature. In addition, the case where the first feature 1s “over”, “above” and “on” the second feature includes the case where the first feature is right or obliquely above the second feature, or merely indicates that the first feature is horizontally higher than the second feature. The case where the first feature is “under”, “below” and “beneath” the second feature includes the case where the first feature is right or obliquely under the second feature, or merely indicates that the first feature is horizontally lower than the second feature.
For better understanding of the technical solution of the present disclosure by one skilled in the art, details of the present disclosure will be further explained with reference to the drawings.
As shown in Figs. 1 to 3, in one embodiment, a movable tool-type herringbone ladder of the present disclosure, comprising: a seat plate 1, a backing plate 15, which is fixedly laid on a bottom surface of the seat plate 1, two ladder assemblies, one end being fixedly connected to a bottom surface of the backing plate 15 and the other end obliquely extending to the bottom surface, and the two ladder assemblies forming a herringbone ladder structure, rollers 5, which are movably provided at a bottom part of the ladder assemblies, transversal braces 6, which are respectively connected to the two ladder assemblies at a lower side away from the backing plate 15 so that a triangular structure is formed by the two ladder assemblies and each transversal brace 6, a pair of posts 13, one end being vertically fixed to a bottom part of the backing plate 15, and the posts 15 being between the two ladder assemblies, a center shaft 11, which comprises a metallic casing and a rotatable bone axis at least partially encased inside the metallic casing, the metallic casing being fixed 7
Specification 2027 to the other end of the posts 13 away from the backing plate 15 and the rotatable bone axis being internally installed inside the metallic casing, a fixed footboard 12, which is fixedly connected to the metallic casing and is kept to be horizontal, a movable footboard 14, which is fixedly connected to the rotatable bone axis and obliquely extends upwards, and a movable supporting assembly, of which one end is vertically fixed to the movable footboard 14 and the other end obliquely extends to the bottom surface, a bottom part of the other end of the movable supporting assembly being provided with braking devices 7.
In a preferable example of the movable tool-type herringbone ladder, the seat plate 1 1s a plate-like structure with a horizontal top surface.
In a preferable example of the movable tool-type herringbone ladder, the ladder assembly comprises: a pair of oblique braces 2, one end being fixedly connected to the bottom surface of the backing plate 15 and the other end obliquely extending towards the ground, a longitudinal brace 8, of which a top surface is connected to the other end of the pair of oblique braces 2 and a bottom surface is connected with the rollers 5, and a plurality of steps 3, which are distributed between the backing plate 15 and the longitudinal brace 8, two ends of each step 3 being connected to the pair of oblique braces 2.
In a preferable example of the movable tool-type herringbone ladder, the longitudinal brace 8, the pair of oblique braces 2 and the backing plate 15 form a parallelogram structure.
In a preferable example of the movable tool-type herringbone ladder, one end of an angle brace 4 is connected to the oblique brace 2 at an angle of 45°, and the other end is connected to the longitudinal brace 8 at an angle of 45°. 8
Specification 2027
In a preferable example of the movable tool-type herringbone ladder, the movable supporting assembly comprises: a pair of oblique braces 10, one end being vertically and fixedly connected to the movable footboard 14, and the other end obliquely extending towards the ground and being provided with a braking device 7, and a plurality of reinforcement braces 9, both ends of each being connected to the pair of oblique braces 10.
In a preferable example of the movable tool-type herringbone ladder, the braking device 7 is an arc-shaped rubber friction block.
In a preferable example of the movable tool-type herringbone ladder, the metallic casing encases the rotatable bone axis by half.
In a preferable example of the movable tool-type herringbone ladder, height of the posts 13 is no smaller than 1/5 of that of the seat plate 1.
In a preferable example of the movable tool-type herringbone ladder, the fixed footboard 12 horizontally extends into the ladder assembly.
In one example, a movable tool-type herringbone ladder comprises a structure main frame, a reinforcement assembly and a movable device. An operator only needs to sit on the seat plate 1 provided at the top end of the herringbone ladder and put the feet respectively on the footboards on two sides; when the movable footboard 14 is stepped, an oblique force is applied downwards, and is transferred into a horizontal dynamic load after being transmitted by the movable device, and then drives the tires to move in the horizontal direction, thereby enabling the operators to control the horizontal movement of the herringbone ladder by themselves. Preferably, the structure main frame respectively comprises a seat plate 1, oblique braces 2, steps 3, longitudinal braces 8, a center shaft 11, a fixed footboard 12, and posts 13. The reinforcement assembly respectively comprises angle braces 4, transversal braces 6, reinforcement braces 9, and a backing plate 15, and the movable device respectively comprises rollers 5 having rubber tires, rubber braking devices 7, a movable supporting assembly, and a movable footboard 14. 9
Specification 4027
The seat plate 1, the backing plate 15, the oblique braces 2, steps 3, posts 13 and longitudinal braces 8 are all connected via full welding, so as to ensure that the structure is firm and reliable as a whole.
In one example, the center shaft 11 comprises a metallic casing and a rotatable bone axis, wherein the metallic casing is a fixed member, and there is supposed to be room inside the metallic casing that allows the rotatable bone axis to rotate while it is encased. The metallic casing is fixed onto the posts 13 via welding, and is connected to the fixed footboard 12 via full welding. The rotatable bone axis is internally provided in the metallic casing, and the metallic casing merely encases the rotatable bone axis by half so as to ensure solid welding of the rotatable bone axis and the movable footboard 14 without affecting the braking distance. The fixed footboard 12 is connected to the oblique braces 2 and the metallic casing of the center shaft 11 via full welding. The movable footboard 14 is welded onto the rotatable bone axis of the center shaft 11, and is in perforated connection with the movable device assembly, so as to ensure that the movable supporting assembly 1s flexibly controlled.
In one example, the present disclosure can satisfy the operation requirements at the height of 1.5 to 1.8 m, and the specification and size of each component can be changed according to actual operation height. However, in order to ensure the overall stability of the structure and make sure that the supporting strength can meet requirements of operation at high space, the oblique braces 2 and the transversal braces 6 are connected at an angle of 45°; height of the posts 13 is supposed to be no smaller than 1/5 of the operation height; angle braces 4 are connected respectively with oblique braces 2 and longitudinal braces 8 at an angle of 45°. Oblique braces 2, longitudinal braces 8, transversal braces 6 and posts 13 are main force bearing structures, and the section sizes thereof are no smaller than 30 mm x30 mm.
To ensure the overall stability of the herringbone ladder during the movement process, rollers 5 having rubber tires and rubber braking devices 7 are adopted in
Specification —_— 504027 the present disclosure as the components in contact with the ground so as to increase the friction coefficient, and the actual tire width is supposed to be no smaller than 50 mm. The structure main frame and the reinforcement assembly of the present disclosure are supposed to be made of an aluminum alloy material, which has the characteristics of low density, high strength, corrosion-resistance and low cost. The sizes and mounting positions in the present disclosure are not unchangeable, and suitable materials can be chosen to be processed and assembled according to the actual situation on site.
At last, it should be noted that the embodiments described here are merely part of the embodiments of the present disclosure, rather than all of them. Based on the embodiments of the present disclosure, all other embodiments obtained by one skilled in the art without making creative efforts belong to the scope of protection claimed by the present disclosure.
Above are merely explanation and illustration of some exemplary embodiments of the present disclosure. Undoubtedly, ordinary technicians in this field can amend the described embodiments by all different means without deviating from the spirits and scope of the present disclosure. Therefore, the afore-mentioned drawings and description are substantively illustrative, and should not be understood as limits to the scope of protection of the claims in the present disclosure. 11

Claims (10)

Claims 2027
1. A movable tool-type herringbone ladder, comprising: a seat plate; a backing plate, which is fixedly laid on a bottom surface of the seat plate, two ladder assemblies, one end being fixedly connected to a bottom surface of the backing plate and the other end obliquely extending to a bottom surface, and the two ladder assemblies forming a herringbone ladder structure, rollers, which are movably provided at a bottom part of the ladder assemblies, transversal braces, which are respectively connected to the two ladder assemblies at a lower side away from the backing plate so that a triangular structure is formed by the two ladder assemblies and each transversal brace, a pair of posts, one end of the post being vertically fixed to a bottom part of the backing plate and the posts being between the two ladder assemblies, a center shaft, which comprises a metallic casing and a rotatable bone axis at least partially encased inside the metallic casing, the metallic casing being fixed to the other end of the posts away from the backing plate and the rotatable bone axis being internally installed inside the metallic casing, a fixed footboard, which is fixedly connected to the metallic casing and is kept to be horizontal, a movable footboard, which is fixedly connected to the rotatable bone axis and obliquely extends upwards, and a movable supporting assembly, of which one end is vertically fixed to the movable footboard and the other end obliquely extends to the bottom surface, a bottom part of the other end of the movable supporting assembly being provided with braking devices.
2. The movable tool-type herringbone ladder according to claim 1, wherein the seat plate is a plate-like structure with a horizontal top surface.
3. The movable tool-type herringbone ladder according to claim 1, wherein the ladder assembly comprises: 1
Claims 2027 a pair of oblique braces, one end being fixedly connected to the bottom surface of the backing plate and the other end obliquely extending towards the ground, a longitudinal brace, of which a top surface 1s connected to the other end of the pair of oblique braces and a bottom surface 1s connected with the rollers, and a plurality of steps, which are distributed between the backing plate and the longitudinal brace, two ends of each step being connected to the pair of oblique braces.
4. The movable tool-type herringbone ladder according to claim 3, wherein the longitudinal brace, the pair of oblique braces and the backing plate form a parallelogram structure.
5. The movable tool-type herringbone ladder according to claim 3, wherein one end of an angle brace is connected to the oblique brace at an angle of 45°, and the other end is connected to the longitudinal brace at an angle of 45°.
6. The movable tool-type herringbone ladder according to claim 1, wherein the movable supporting assembly comprises: a pair of oblique braces, one end being vertically and fixedly connected to the movable footboard, and the other end obliquely extending towards the ground and being provided with a braking device, and a plurality of reinforcement braces, both ends of each being connected to the pair of oblique braces.
7. The movable tool-type herringbone ladder according to claim 1, wherein the braking device is an arc-shaped rubber friction block.
8. The movable tool-type herringbone ladder according to claim 1, wherein the metallic casing encases the rotatable bone axis by half.
9. The movable tool-type herringbone ladder according to claim 1, wherein height of the posts is no smaller than 1/5 of that of the seat plate.
10. The movable tool-type herringbone ladder according to claim 1, wherein the fixed footboard horizontally extends into the ladder assembly. 2
LU504027A 2023-03-03 2023-04-21 Movable tool-type herringbone ladder LU504027B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320382637.6U CN219570003U (en) 2023-03-03 2023-03-03 Mobilizable instrument formula double ladder

Publications (1)

Publication Number Publication Date
LU504027B1 true LU504027B1 (en) 2023-10-23

Family

ID=87667462

Family Applications (1)

Application Number Title Priority Date Filing Date
LU504027A LU504027B1 (en) 2023-03-03 2023-04-21 Movable tool-type herringbone ladder

Country Status (2)

Country Link
CN (1) CN219570003U (en)
LU (1) LU504027B1 (en)

Also Published As

Publication number Publication date
CN219570003U (en) 2023-08-22

Similar Documents

Publication Publication Date Title
JPH10506444A (en) Scaffold assembly
CN207959867U (en) One kind carrying turnover plate type portable type scaffold
LU504027B1 (en) Movable tool-type herringbone ladder
CN208310186U (en) A kind of wall reinforcement formwork structure with corner
CN212773477U (en) Stair aluminum alloy template
CN212128838U (en) Novel embedded unit type multidirectional displacement bridge expansion device with ultra-long service life
CN108372530B (en) Cutting and spraying integrated equipment for decoration and fitment plates
CN214462346U (en) Assembled scaffold for housing construction engineering
CN205577406U (en) Stair template structure
CN205663172U (en) Historical architecture scaffold frame for maintaining use
CN212153138U (en) Steel structure bridge support frame
CN210710496U (en) Lightweight material hoisting frame
KR200491378Y1 (en) Supporter for safety foot plate and scaffolding
CN207568153U (en) Floor concrete casting operation platform is built in a kind of room
CN209353660U (en) A kind of portable electric stair shaft workbench
CN205476818U (en) Covering or awning on a car, boat, etc. room structure
CN214885850U (en) Optimized ladder stand system convenient for offshore wind power construction
CN205476454U (en) Board device falls in instrument formula building
CN217924752U (en) Multifunctional combined scaffold
CN219402526U (en) Profiled steel sheet processing platform
CN208950196U (en) A kind of novel glass high ladder
CN110043026A (en) Mobile support device and its application method for building
CN207829441U (en) Large span inclined roof is led a wandering life curtain wall mounting device
CN211545613U (en) Assembled stand for elevator
CN219175906U (en) Building wall column verticality adjusting device

Legal Events

Date Code Title Description
FG Patent granted

Effective date: 20231023