CN101864890A - Assembling structure of ladder landing and ladder thereof - Google Patents
Assembling structure of ladder landing and ladder thereof Download PDFInfo
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- CN101864890A CN101864890A CN 201010215109 CN201010215109A CN101864890A CN 101864890 A CN101864890 A CN 101864890A CN 201010215109 CN201010215109 CN 201010215109 CN 201010215109 A CN201010215109 A CN 201010215109A CN 101864890 A CN101864890 A CN 101864890A
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- 241000288049 Perdix perdix Species 0.000 claims description 10
- 230000009471 action Effects 0.000 claims description 4
- 238000001746 injection moulding Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 1
- 238000003860 storage Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 210000001364 upper extremity Anatomy 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000000243 solution Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention discloses an assembling structure of a ladder landing and a ladder thereof, which relate to the field of ladders and relate to the assembling structure of a foldable ladder landing or a pedal locking part and the ladder thereof. The assembling structure comprises the ladder landing, wherein the ladder landing is provided with a lock hook; the lock hook is used for locking ladder rung; the lock hook is integrally formed by a assembling part and a hooking part; the lock hook has preset thickness and is formed with the crest plane of the assembling part and the crest plane of the hooking part, wherein the crest plane of the assembling part is a contact surface which is anastomotic with the ladder landing; the assembling part is provided with a slideway hole for a pin shaft to slide; the crest plane of the hooking part is provided with a spring assembling bolt used for installing a spring; one end of the spring is mounted on the spring assembling bolt, and the other end thereof is supported by the lateral wall of the ladder landing; the hooking part is provided with a touch end capable of touching the ladder rung; the assembling part and the hooking part form a hook slot capable of accommodating the ladder rung; the bottom of the ladder landing is provided with an assembled slot for installing the lock hook; the assembled slot is provided with pin shaft hole for fixedly installing the pin shaft; and pin shaft limit key capable of limiting the sliding position of the lock hook is arranged adjacent to the pin shaft hole.
Description
Technical Field
The scheme belongs to the field of ladders and relates to an assembly structure of a foldable ladder platform or a pedal locking part and a ladder thereof.
Background
For ladders with foldable platforms, safety locking platforms and quick folding platforms are required, and on the basis, the aims of simpler structure and more material saving are required, so that the continuous pursuit of the industry is pursued.
As disclosed in chinese patent 01125580.3, the steps and the method for assembling the steps are as follows: assembling a frame having a front leg and a rear leg, the rear leg being connected to the front leg for relative pivotal movement between an open use position and a stowed storage position; providing a step connected to the front leg, the step being relatively pivotable between a horizontal use position and a storage position; assembling a connecting member including a body and a shaft connected to the body and the pedal; a junction elbow connected to the body is assembled. Further included is fitting the joint elbow into engagement with the rear leg such that when the step is moved from the horizontal use position to the storage position, the rear leg is correspondingly moved from the open use position to the merged storage position.
As another example, the disclosed chinese patent 200420019380.5 is an improved structure of a ladder chair, which is composed of a front frame, a middle frame, two connecting sets and a rear frame; the front frame is an n-shaped frame body, and the middle of the two side sections is pivoted with the two sides of the front section of the pedals; the middle frame is a frame body formed by welding two vertical rods and four transverse sections; the connecting group is clamped between the second and third transverse sections of the second vertical rod of the middle frame, is a slidable connecting structure with one end sleeved with the second vertical rod of the middle frame and the other end pivoted with the rear frame, and consists of a left block, a right block, a connecting rod and a lock catch piece; an inclined plane is arranged above the outer end of the left block, an ㄈ -shaped groove is downwards arranged at the center of the left block, and a transverse rod penetrating hole is arranged at the inner end of the left block; the inner end of the right block is provided with a vertical semicircular groove corresponding to the diameter of the vertical rod of the middle frame, the outer end of the right block is provided with a transverse rod penetrating hole, and the side wall of the right block is provided with an embedded groove for pushing the inner end of the left block; the connecting rod is a pivoted rod piece which penetrates through a rod penetrating hole of the right block and a rod penetrating hole of the left block; the lock catch piece is a hook buckle positioning structure sleeved on the middle section of the connecting rod; the rear frame is a frame body consisting of two vertical rods and a cross rod, the top end of the rear frame is pivoted with the two side sections of the front frame through a screw fastener, and the inner walls of the two vertical rods of the rear frame are correspondingly provided with two pivot rod grooves which can be embedded into two ends of a connecting rod; the sliding connection set can make the ladder chair stable and firm when unfolded and the width of the ladder chair sharp when folded to facilitate the storage, and the folding operation of the ladder chair is simple and convenient.
As disclosed in the chinese patent 200620026166.1, the ladder carrier is pivotally mounted on the ladder frame in a rotatable manner around a first cross bar, which is horizontally disposed between the main ladder frames, wherein the ladder carrier is assembled by profile plates having an adjacent snap-fit structure. The structure of the scheme enables the ladder supporting plate and the ladder pedal to be manufactured by the section bars with the same specification, thereby achieving the purpose of reducing the manufacturing cost.
For mature technologies such as ladders, improvements in product detail are much sought after by the audience, although improvements in detail are less likely. It is desirable in the industry to have a ladder with more rigid components, lighter components, more stable ladder and better safety, and lighter ladder, more material saving and lower manufacturing costs.
Disclosure of Invention
The present invention is directed to overcome the above-mentioned drawbacks of the prior art and to provide a platform locking structure for a ladder and a ladder thereof, so that the ladder has a simpler and more optimized structure, and the ladder is lighter, more material-saving and more secure in safety.
The technical problem to be solved by the invention is realized by adopting the following technical scheme, and the ladder platform assembling structure of the ladder comprises a ladder platform, wherein: a locking hook is arranged on the ladder platform and used for locking the ladder steps; the lock hook is integrally formed by an assembling part and a hooking part, the lock hook has a preset thickness and forms an assembling part ridged surface and a hooking part ridged surface, the assembling part ridged surface is a contact surface inosculated with the ladder platform, and the assembling part is provided with a slide way hole for allowing the pin shaft to slide; the hook part ridge surface is provided with a spring assembling bolt for installing a spring; one end of the spring is seated on the spring assembling bolt, and the other end of the spring is supported by the side wall of the ladder platform; the hooking part is provided with a touch end G which can touch the stair; the touch end G is a touch tip capable of forming point contact; the assembling part and the hooking part form a hook groove capable of accommodating the step;
the bottom of the ladder platform is provided with an assembly type groove for installing the lock hook, and the assembly type groove is used for embedding the assembly part of the lock hook; the assembly type groove is provided with a pin shaft hole for fixedly mounting a pin shaft, and a pin shaft limiting key for limiting the sliding position of the lock hook can be arranged adjacent to the pin shaft hole.
The technical problem solved by the scheme can be further realized by adopting the following technical scheme:
the ladder platform assembling structure of the ladder comprises: the ladder platform side wall is provided with a spring accommodating cavity in an extending mode, the spring accommodating cavity is provided with a preset depth, the spring accommodating part corresponds to the spring assembling bolt of the ridge surface of the hook hooking part of the lock hook, the spring accommodating part is provided with a spring fixing part, and the spring fixing part is composed of two spring limiting keys capable of clamping springs.
The ladder platform assembling structure of the ladder comprises: a buckle is also arranged on the ridge surface of the hooking part of the lock hook; the locking hook is used for pulling the locking hook to slide in a telescopic way along the direction of the slide way hole under the action of the spring.
The ladder platform assembling structure of the ladder comprises: the ladder platform is provided with a step limiting part which is in charge of being matched with the lock hook to limit the step to move.
Aforementioned ladder platform assembly structure, wherein: the step spacing part sets up 2 or 3 or 4.
The ladder platform assembling structure of the ladder comprises: the assembly type groove, the pin shaft limiting key, the spring accommodating cavity, the spring fixing part and the step limiting part of the ladder platform are integrally formed.
The technical problem to be solved by the invention is solved by adopting the following technical scheme, the ladder with any one of the ladder platform assembling structures comprises a main ladder, an auxiliary ladder and a ladder platform arranged between the main ladder and the auxiliary ladder, wherein: the connecting rod is arranged on the ladder platform and is responsible for driving the auxiliary ladder and the main ladder to be folded; the fixed end of the connecting rod is pivoted on the ladder platform, and the connecting rod can rotate around the ladder platform; the free end of the connecting rod is connected with the steps of the auxiliary ladder or the main ladder.
The technical problem solved by the scheme can be further realized by adopting the following technical scheme:
the foregoing ladder, wherein: connecting rod one end has the first pilot hole that can the suit on the step, and the other end of connecting rod has the second pilot hole that can install at terraced platform fixed point position, and first pilot hole is greater than the second pilot hole, and the edge integrative pilot hole flange that forms of first pilot hole and second pilot hole, and first pilot hole, second pilot hole all have the hole and accord with the face, and this hole accords with the face and can form the face contact by the assembly component.
The foregoing ladder, wherein: two external tangents between the first assembly hole and the second assembly hole of the connecting rod form a first edge and a second edge of the connecting rod, and the first edge and the second edge of the connecting rod and the outer edges of the first assembly hole and the second assembly hole form an external flange of the connecting rod.
The foregoing ladder, wherein: the connecting rod is integrally formed by injection molding, and a hollow hole is formed in the middle of the connecting rod.
Compared with the prior art, the invention has obvious advantages and beneficial effects.
According to the technical scheme, the invention has at least the following advantages under excellent structure configuration: the reasonable arrangement of the ladder platform assembly structure enables the part structure of the ladder platform assembly part to be firmer and the parts to be lighter, the stability and the safety of the ladder of the scheme are guaranteed, the ladder is lighter, the reasonable structure of the scheme can enable the manufacturing process to be optimized, and the ladder is more convenient to popularize and apply in industry.
The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.
Drawings
FIG. 1 is a schematic structural view of the ladder of the present invention;
FIG. 1a is an exploded view of the assembly of FIG. 1, partially enlarged;
FIG. 2 is an enlarged partially exploded view of the ladder of the present invention;
FIG. 2a is an enlarged partial schematic view of FIG. 2;
FIG. 3 is a cross-sectional structure diagram of the platform assembly structure of the present case;
FIG. 4 is an exploded view of the platform assembly structure of the present invention from another perspective;
FIG. 4a is a partially enlarged structural view of the bottom of the landing;
FIG. 5 is a schematic view of a folded planar structure of the ladder of the present invention in use;
FIG. 5a is a schematic plan view of the ladder during its opening operation;
FIG. 5b is a schematic plan view of the ladder of the present invention in its fully open position;
fig. 5c is a schematic view of a planar structure of the ladder ready to be folded when in use.
Detailed Description
The following detailed description is provided for the specific embodiments, features and functions according to the present invention in conjunction with the preferred embodiments; for the purposes of simplicity and clarity, descriptions of well-known technologies are omitted appropriately below so as not to obscure the description of the present technical solution with unnecessary details.
Referring to fig. 1 to 5, a ladder comprises a main ladder 1, an auxiliary ladder 2 and a ladder platform 3 installed between the main ladder and the auxiliary ladder,
the assembling structure of the ladder platform is as follows: one end of the ladder platform is arranged on the main ladder or the auxiliary ladder through a pivot shaft 10, the other end of the ladder platform can be lapped on the corresponding step 20 of the auxiliary ladder or the main ladder, and the step of the supporting ladder platform is correspondingly configured with the pivot shaft 10 of the pivoted ladder platform and is on the same plane; the ladder platform 3 is provided with a lock hook 5 which is responsible for locking the ladder platform with the steps of the auxiliary ladder or the main ladder; when the ladder is used, the ladder platform is in a horizontal position, the ladder platform is locked by the locking hook on the bottom surface of the ladder platform, when the ladder platform is folded, the locking hook is separated from the ladder step, and the ladder platform rotates around the pivot shaft 10 relatively and is folded onto the main ladder or the auxiliary ladder where the pivot shaft is positioned;
the ladder platform is usually arranged at the uppermost stage, and the possibility that the ladder platform is arranged at other steps is not eliminated; FIG. 1 shows the situation where the pivot end of the platform is on the main ladder and the steps of the support platform are on the auxiliary ladder, without excluding the opposite situation, the pivot end of the platform is on the auxiliary ladder and the steps of the support platform are on the main ladder; wherein,
the locking hook 5 is arranged on the ladder platform 3 through pin shafts 501 and 502 and used for hooking the ladder steps of the auxiliary ladder or the main ladder to realize the locking of the ladder platform and the ladder steps;
the latch hook is formed by an assembly part 51 and a hooking part 52 into an L-shaped structure, the latch hook has a preset thickness a, and forms an assembly part ridge surface 510 and a hooking part ridge surface 520, the assembly part ridge surface is a contact surface matched with the bottom of the ladder platform, therefore, the assembly part ridge surface can be stably combined with the contact surface of the ladder platform, and the hooking part ridge surface is provided with a spring assembly bolt 521 for installing a spring 6; the ridge surface of the hook-in part is also provided with a buckle 522 for pulling the hook to telescopically slide along the length direction of the slide way holes 511 and 512 under the action of the spring;
the hooking part is provided with a touch end G which can touch the stair; the touch end G is set as a touch tip capable of forming point contact, so that labor is saved; as shown in fig. 5a, the arrangement of the contact end G of the latch hook can cause the contact end of the latch hook to be collided with the step 20 when the ladder is opened, the latch hook is forced to move in the opposite direction of f, the spring is compressed, and when the ladder platform rotates to the horizontal position, the spring is reset, and the latch hook "hugs" the step 20, so that locking is realized;
the fitting portion and the hooking portion form a hooking groove 54 capable of receiving a step (or a rail);
the assembling part is provided with slide way holes 511 and 512 for accommodating the pin shafts 501 and 502 to slide, so that the slide way holes have two functions of assembling and sliding; moreover, as the lock hook has the preset thickness, the slide way hole of the assembling part also has the corresponding width, and the hook groove formed by the assembling part and the hooking part also has the corresponding width, so that the pin shaft is in surface contact with the slide way hole, and the hook groove also has a contact surface which can be in contact with the step in a matching way, thereby effectively improving the stability of the combination of the parts;
the bottom of the ladder platform 3 is provided with an assembly type groove 30 for installing the lock hook, and the assembly type groove is used for embedding an assembly part of the lock hook; the assembly type groove is provided with pin shaft holes 301a and 301b for fixedly mounting pin shafts 501 and 502, and pin shaft limiting keys 302a and 302b for limiting the sliding position of the lock hook can be arranged adjacent to the pin shaft holes; one end of the spring 6 is seated on the spring assembling bolt, and the other end is supported by the side wall of the ladder platform 3;
further, the side wall of the ladder platform 3 extends to form a spring accommodating cavity 303, the spring accommodating cavity has a preset depth b, the spring accommodating part corresponds to a spring assembling bolt 521 on the ridge surface of the hook hooking part of the lock hook, the spring accommodating part is provided with a spring fixing part 3036, and the spring fixing part 3036 is composed of two spring limiting keys capable of clamping the spring, so that the structure and arrangement are realized, the process assembly can be more convenient, and the tooling efficiency is improved;
a step limiting part 304 is arranged on the ladder platform and is used for being matched with the locking hook to limit the movement of the step; the step limiting parts 304 are uniformly arranged according to the length of the steps, and 1, 2, 3, 4 or more steps can be arranged;
when the ladder platform is positioned at a horizontal position, the ladder supporting the ladder platform is provided with three dimensional surfaces all in the hugging of the locking hooks, namely a first dimensional surface W1, a second dimensional surface W2 and a third dimensional surface W3 of the ladder platform, and a ladder limiting part of the ladder platform can just abut against a fourth dimensional surface W4 of the ladder, so that the ladder limiting part of the ladder platform is combined with the locking hooks to form a surrounding ladder structure, and the stability and the safety of the ladder platform are effectively improved;
the ladder platform 3 is integrally formed, and the assembly type groove 30, the pin shaft limiting keys 302a and 302b, the spring accommodating cavity 303, the spring fixing part 3036, the step limiting part of the ladder platform and other structural arrangements can be integrally formed, so that the manufacturing cost can be effectively reduced, the tooling efficiency can be improved, and the safety can be improved;
the ladder platform and the lock hook form an assembly structure of the ladder platform;
the connecting rod 4 is used for driving the auxiliary ladder and the main ladder to be folded when the ladder platform 3 is folded, the connecting rod can be integrally formed by injection molding, one end of the connecting rod is provided with a first assembling hole 42 which can be sleeved on the ladder step 20, the other end of the connecting rod is provided with a second assembling hole 43 which can be arranged at a fixed point of the ladder platform, the first assembling hole is larger than the second assembling hole, the edges of the first assembling hole and the second assembling hole are integrally formed into an assembling hole flange, and the first assembling hole and the second assembling hole are both provided with inner hole conforming surfaces; on one hand, the connecting rod assembly hole can form an inner hole conforming surface 420 which is in wider contact with the assembled component to form surface contact, so that the stability and the safety of the mutually matched ladder components can be effectively improved; similarly, the second assembly hole also forms an inner hole conforming surface; on the other hand, the assembly hole flange can also effectively strengthen the strength of the connecting rod; the assembled components are referred to herein as the steps 20 or landing fixed point pivots 34;
two external tangents between the first and second assembly holes form a first edge 41a and a second edge 41b of the connecting rod, and the first and second edges of the connecting rod and the outer edges of the first and second assembly holes form an outer flange 41 of the connecting rod, so that the strength of the connecting rod, particularly a plastic connecting rod, can be effectively enhanced; the middle part of the connecting rod is provided with the hollow hole, so that the material of the component can be saved under the condition of meeting the preset strength of the connecting rod;
the connecting rod is provided with the hollow hole 44, so that the component is light, and can be used for hanging any object, and convenience is provided.
The main ladder 1 and the auxiliary ladder 2 are installed by a connecting piece 9.
Referring to fig. 5, 5a, 5b and 5c, in the process of the ladder from the folding state to the opening state, when the ladder is closed or opened, the structural relationship between the ladder platform and the lock hook and the ladder, the force applied by pulling the lock hook 5 is F, so that the lock hook can be separated from the step 20; f is the acting force of the spring on the lock hook when the ladder platform is opened and approaches to the horizontal state, and the lock hook locks the ladder step under the action of the spring.
It will be apparent to those skilled in the art from this detailed description that various changes and modifications can be made without departing from the spirit and scope of the invention as defined in the following claims, and that the invention is not limited to the embodiments set forth in the specification.
Claims (10)
1. A ladder platform assembly structure of a ladder, comprising a ladder platform, characterized in that: a locking hook (5) is arranged on the ladder platform (3) and used for locking the ladder steps; the lock hook is formed by an assembling part (51) and a hooking part (52) in an integrated mode, the lock hook is provided with a preset thickness and forms an assembling part ridge surface (510) and a hooking part ridge surface (520), the assembling part ridge surface is a contact surface matched with the ladder platform, and the assembling part is provided with sliding channel holes (511) and (512) for allowing the pin shafts (501 and 502) to slide; the hook part ridge surface is provided with a spring assembling bolt (521) for installing a spring (6); one end of the spring (6) is seated on the spring assembling bolt, and the other end of the spring is supported by the side wall of the ladder platform (3); the hooking part is provided with a touch end capable of touching the step; the assembly part and the hooking part form a hook groove (54) capable of accommodating the step;
the bottom of ladder platform (3) has assembly type groove (30) of installation latch hook, assembly type groove has the round pin axle hole (301a, 301b) that holds round pin axle (501, 502) and adorn admittedly, adjoins the round pin axle hole and can sets up the round pin axle spacing key (302a, 302b) of restriction latch hook sliding position.
2. A ladder platform assembly configuration for a ladder as defined in claim 1, further comprising: the ladder platform (3) is provided with a spring accommodating cavity (303) in a side wall extending mode, the spring accommodating cavity is provided with a preset depth, the spring accommodating part corresponds to a spring assembling bolt (521) on the ridge surface of the hook hooking part of the lock hook, a spring fixing part (3036) is arranged on the spring accommodating part, and the spring fixing part (3036) is composed of two spring limiting keys capable of clamping a spring.
3. A ladder platform assembly configuration for a ladder as defined in claim 2, further comprising: a buckle (522) is also arranged on the ridge surface of the hooking part of the lock hook; the locking hook is pulled to slide telescopically along the direction of the sliding track holes (511, 512) under the action of the spring.
4. A ladder platform assembly configuration for a ladder as claimed in claim 3, wherein: the ladder platform is provided with a step limiting part (304) which is used for limiting the movement of the step in cooperation with the locking hook.
5. A ladder platform assembly arrangement for a ladder as claimed in claim 4, wherein: the number of the step limiting parts (304) is 2, 3 or 4.
6. A ladder platform assembly arrangement for a ladder as claimed in claim 5, wherein: an assembly groove (30), pin shaft limiting keys (302a, 302b), a spring accommodating cavity (303), a spring fixing part (3036) and a step limiting part of the ladder platform are integrally formed.
7. A ladder having any one of the above-described ladder platform assembly configurations 1 to 6, comprising a main ladder (1), an auxiliary ladder (2), and a ladder platform (3) installed between the main ladder and the auxiliary ladder, characterized in that: a connecting rod (4) is arranged on the ladder platform and is responsible for driving the auxiliary ladder and the main ladder to be folded; the fixed end of the connecting rod is pivoted on the ladder platform, and the connecting rod can rotate around the ladder platform; the free ends of the links are connected to the steps (20) of the secondary or main ladder.
8. A ladder as set forth in claim 7 wherein: connecting rod one end has first pilot hole (42) that can the suit on step (20), and the other end of connecting rod has second pilot hole (43) that can install at terraced platform fixed point position, and first pilot hole is greater than the second pilot hole, and the edge of first pilot hole and second pilot hole forms the pilot hole flange integratively, and first pilot hole, second pilot hole all have the hole and accord with the face, and this hole accords with the face and can form the face contact by the assembly component.
9. A ladder as set forth in claim 8 wherein: two external tangents between the first assembly hole and the second assembly hole of the connecting rod form a first edge and a second edge of the connecting rod, and the first edge and the second edge of the connecting rod and the outer edges of the first assembly hole and the second assembly hole form an external flange (41) of the connecting rod integrally.
10. A ladder as set forth in claim 9 wherein: the connecting rod is integrally formed by injection molding, and a hollow hole is formed in the middle of the connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102151099A CN101864890B (en) | 2010-07-01 | 2010-07-01 | Assembling structure of ladder landing and ladder thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102151099A CN101864890B (en) | 2010-07-01 | 2010-07-01 | Assembling structure of ladder landing and ladder thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101864890A true CN101864890A (en) | 2010-10-20 |
| CN101864890B CN101864890B (en) | 2012-02-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102151099A Active CN101864890B (en) | 2010-07-01 | 2010-07-01 | Assembling structure of ladder landing and ladder thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101864890B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102493759A (en) * | 2011-11-24 | 2012-06-13 | 金华电业局 | Insulating lifting platform for live-line working of tubular bus-bar |
| CN104594794A (en) * | 2015-01-27 | 2015-05-06 | 宁波兴富工具有限公司 | Work ladder as working platform |
| CN107178306A (en) * | 2017-07-20 | 2017-09-19 | 苏交科集团股份有限公司 | A kind of assembled stair and its application method for bridge machinery |
| CN111197457A (en) * | 2020-03-02 | 2020-05-26 | 韦仕兰 | Power system is with maintenance ladder convenient to accomodate and use more laborsaving |
| CN113047766A (en) * | 2021-04-02 | 2021-06-29 | 苏州莱恩精工合金股份有限公司 | Internal and external ladder locking device and multifunctional ladder comprising same |
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| CN2813866Y (en) * | 2005-08-23 | 2006-09-06 | 天津市金锚集团有限责任公司 | Clamping hook device for ladder platform |
| US20070039779A1 (en) * | 2005-08-18 | 2007-02-22 | Loren Ellingson | Hunting stand |
| WO2008041156A2 (en) * | 2006-10-06 | 2008-04-10 | Harold Bremner Sharp | A-framed step ladder with slidably displaceable extension member |
| CN201250604Y (en) * | 2008-09-18 | 2009-06-03 | 天津市金锚集团有限责任公司 | Latch hook unit for ladder |
| CN201730536U (en) * | 2010-07-01 | 2011-02-02 | 天津市金锚集团有限责任公司 | Improved ladder platform assembly structure and ladder thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20070039779A1 (en) * | 2005-08-18 | 2007-02-22 | Loren Ellingson | Hunting stand |
| CN2813866Y (en) * | 2005-08-23 | 2006-09-06 | 天津市金锚集团有限责任公司 | Clamping hook device for ladder platform |
| WO2008041156A2 (en) * | 2006-10-06 | 2008-04-10 | Harold Bremner Sharp | A-framed step ladder with slidably displaceable extension member |
| CN201250604Y (en) * | 2008-09-18 | 2009-06-03 | 天津市金锚集团有限责任公司 | Latch hook unit for ladder |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493759A (en) * | 2011-11-24 | 2012-06-13 | 金华电业局 | Insulating lifting platform for live-line working of tubular bus-bar |
| CN102493759B (en) * | 2011-11-24 | 2013-11-13 | 金华电业局 | Insulating lifting platform for live-line working of tubular bus-bar |
| CN104594794A (en) * | 2015-01-27 | 2015-05-06 | 宁波兴富工具有限公司 | Work ladder as working platform |
| CN107178306A (en) * | 2017-07-20 | 2017-09-19 | 苏交科集团股份有限公司 | A kind of assembled stair and its application method for bridge machinery |
| CN107178306B (en) * | 2017-07-20 | 2023-05-26 | 苏交科集团股份有限公司 | Assembled stair for bridge detection and application method thereof |
| CN111197457A (en) * | 2020-03-02 | 2020-05-26 | 韦仕兰 | Power system is with maintenance ladder convenient to accomodate and use more laborsaving |
| CN111197457B (en) * | 2020-03-02 | 2021-09-14 | 中电国际新能源控股有限公司 | Power system is with maintenance ladder convenient to accomodate and use more laborsaving |
| CN113047766A (en) * | 2021-04-02 | 2021-06-29 | 苏州莱恩精工合金股份有限公司 | Internal and external ladder locking device and multifunctional ladder comprising same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101864890B (en) | 2012-02-01 |
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