Guardrail assembly and platform ladder

Abstract

The utility model relates to the technical field of platform ladders, in particular to a guardrail assembly and a platform ladder, the guardrail assembly comprises a guardrail main body, a connecting seat, an elastic piece, a locking piece and a hinge shaft; the guardrail main body is connected with the connecting seat through the hinge shaft, and the guardrail main body can rotate around the axis of the hinge shaft relative to the connecting seat; the guardrail main body is provided with an inner cavity; a first locking hole and a second locking hole are respectively formed in the guardrail main body and the connecting seat; the elastic piece is arranged in the inner cavity; the locking piece is arranged on the elastic piece; and a part of the locking piece is arranged in the first locking hole. Through cooperation of the elastic piece and the locking piece, the locking piece can be automatically inserted into the second locking hole to be locked and keep stable under the condition that no external force exists, only the locking piece needs to be pushed out of the second locking hole when locking is released, the structure is simple, and operation is convenient; and meanwhile, the elastic piece and the locking piece are arranged in a built-in manner, so that the occupied extra storage space is small.

Description

TECHNICAL FIELD

[0001] The utility model relates to platform ladder technical field, concretely relates to guardrail assembly and platform ladder. BACKGROUND

[0002] In engineering construction, maintenance operation and aerial work, platform ladder as important climbing tool, its safety is very important. Guardrail assembly as important component of platform ladder, it is mainly used for preventing the accidental falling of operator when operating at high place, ensures the operation safety. Guardrail assembly can be rotatably arranged to facilitate storage, and is equipped with locking structure to limit its rotation in the working stage.

[0003] At present, the locking structure of guardrail assembly is mostly external structure, and this design will lead to the increase of the space occupied by platform ladder. And the external locking structure has the deficiency in quick locking and unlocking, and in the aerial work,

[0004] If it cannot be quickly locked and unlocked, there is a safety risk, at this time, only the platform ladder can be laid flat first and then locked or unlocked, and the operation is inconvenient.

[0005] Therefore, how to solve the deficiency caused by the external locking structure of the prior art has become the subject to be studied and solved by the utility model. UTILITY MODEL CONTENT

[0006] The utility model aims at providing a guardrail assembly and platform ladder.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0008] The guardrail assembly comprises a guardrail body, a connecting seat, an elastic piece, a locking piece and a hinge shaft.

[0009] The guardrail body is connected with the connecting seat through the hinge shaft, and the guardrail body can rotate around the axis of the hinge shaft relative to the connecting seat.

[0010] The guardrail body has an inner cavity, and the guardrail body and the connecting seat are respectively provided with a first locking hole and a second locking hole.

[0011] The elastic piece is arranged in the inner cavity.

[0012] The locking piece is arranged on the elastic piece, and part of the locking piece is arranged in the first locking hole.

[0013] The guardrail assembly is configured to have a locked state and an unlocked state. In the locked state, part of the locking piece is arranged in the second locking hole to limit the movement of the guardrail body relative to the connecting seat. In the unlocked state, the locking piece is separated from the second locking hole to enable the movement of the guardrail body relative to the connecting seat.

[0014] In the above scheme, the guardrail assembly is in the locked state (corresponding to the working phase) and the guardrail body is unfolded to play a protective role. Since part of the locking member is placed in the second locking hole to limit the movement of the guardrail body relative to the connecting seat, the stable protection of the guardrail body (or the guardrail assembly) is achieved. Before the guardrail body is folded for storage, the guardrail assembly is switched from the locked state to the unlocked state. During the switching process, the locking member is pressed to separate it from the second locking hole, so that the guardrail body can be folded.

[0015] Through the above arrangement, the guardrail assembly can not only be stably protected during the working phase, but also be folded for storage during the non-working phase to reduce the occupied space. In addition, through the cooperation of the elastic member and the locking member, the locking member can be automatically inserted into the second locking hole for locking and maintaining stability without external force. When the locking is released, the locking member only needs to be pushed out of the second locking hole, which is simple in structure and convenient to operate. At the same time, the combined locking structure of the elastic member and the locking member is almost completely covered by the guardrail body, and the combined locking structure itself can be approximately regarded as not occupying additional storage space.

[0016] Further technical solutions, the hinge shaft is provided as a semi-hollow rivet; the guardrail body and the connecting seat are both provided with a rotation hole corresponding to the semi-hollow rivet.

[0017] Further technical solutions, the connecting seat, the elastic member, the locking member, and the hinge shaft are all provided as two; the two connecting seats are connected to the symmetrical two ends of the guardrail body through the two hinge shafts; the first locking hole is provided as two.

[0018] Through this arrangement, the support points for supporting the guardrail body are increased, so that the guardrail body can be stably rotated.

[0019] Further technical solutions, along the distribution direction of the two connecting seats, the first locking hole is provided through the guardrail body, and the second locking hole is provided through the corresponding connecting seat.

[0020] The locking member includes two locking pins, and the two locking pins are symmetrically arranged in the distribution direction of the two connecting seats.

[0021] The arrangement of this part also achieves stable rotation of the guardrail body, so that it can be used for a long time and prolong the service life, and at the same time, it avoids rotation during the working phase to cause safety accidents.

[0022] Further technical solutions, the guardrail body includes a guardrail structure, two end covers, and an enclosing mechanism.

[0023] The guardrail structure is connected to the connecting seat through the hinge shaft.

[0024] The two end covers and the guardrail structure enclose the inner cavity;

[0025] The enclosing mechanism and the guardrail structure enclose a protection space.

[0026] The guardrail structure and the enclosing mechanism are protection structures, which prevent people from falling forward, backward or sideways. Specifically, the enclosing mechanism and the guardrail structure enclose a protection space to protect people.

[0027] Further technical solutions, the end cover includes an insertion part and an exposed part, the insertion part is clamped in the inner cavity; and / or the size of the exposed part is larger than the size of the inner cavity.

[0028] For easy understanding, the cross section of the exposed part, the cross section of the insertion part and the cross section of the inner cavity are all circular, as follows: the insertion part is the cover body, the radius of the cross section of the insertion part is the same as the radius of the cross section of the inner cavity, so that the insertion part can be clamped in the inner cavity to achieve fixation; the exposed part is the cover cap, the radius of the cross section of the exposed part is larger than the radius of the cross section of the inner cavity, which can prevent the entire part of the end cover from entering the inner cavity, and facilitate the removal of the end cover.

[0029] The end cover protects the inner cavity to prevent foreign matter from entering the inner cavity.

[0030] Further technical solutions, the enclosing mechanism includes a strip structure and two fixing members; the two ends of the strip structure are connected to the guardrail structure through the two fixing members respectively.

[0031] The strip structure can be regarded as a safety belt, and the strip structure is used to protect people to prevent them from falling backward.

[0032] The fixing member can be a mountaineering safety buckle, and the fixing member is used to quickly disassemble and install the strip structure.

[0033] Further technical solutions, the two end covers are connected to the guardrail structure through the two fixing members respectively.

[0034] Further technical solutions, the strip structure has elasticity; and / or the fixing member includes at least one fixing ring for fixing the strip structure.

[0035] The fixing ring provides convenience for fixing the strip structure, for example, the two ends of the strip structure are provided with sticky objects similar to Velcro, at this time, the two ends of the strip structure enclose a matching ring, and the matching ring and the fixing ring are mutually threaded, which can refer to the arrangement between each chain ring in a chain.

[0036] The fixing ring can be single, two or more, which is suitable for strip structures of different lengths.

[0037] Also provided herein is a platform ladder comprising the guardrail assembly of any of the above embodiments.

[0038] As used herein, "first", "second", and / or the like are not intended to refer to order or sequence, but are used to distinguish one component from another. They are not intended to specify a particular order or sequence.

[0039] As used herein, "connected" or "positioned" can mean directly connected or indirectly connected through one or more intervening components or devices. It can also mean that two or more components or devices are in operative or communicative connection or interaction.

[0040] As used herein, "comprises", "comprising", "includes", "including" and / or the like are open-ended terms that are intended to mean including but not limited to.

[0041] As used herein, the terms are generally used in the same sense as they are used in the art, in the context of the present disclosure, and in the context of the specific content, unless otherwise indicated. Certain terms used to describe the present disclosure are discussed below or elsewhere in the specification to provide additional guidance to those skilled in the art regarding the description of the present disclosure.

[0042] As used herein, "front", "back", "up", "down", "left", "right", and / or the like are directional terms that are used in the present disclosure only to illustrate the positional relationship between structures, and are not intended to limit the scope of protection and the specific direction of actual implementation.

[0043] The working principle and advantages of the utility model are as follows: the guardrail assembly is in the locking state, the guardrail main body is unfolded to play a protective role, part of the locking member is placed in the second locking hole to limit the movement of the guardrail main body relative to the connecting seat, and the stable protection of the guardrail main body is realized; before folding the guardrail main body for storage, the guardrail assembly is switched from the locking state to the unlocking state, and in the switching process, the locking member is separated from the second locking hole by pressing, so that the guardrail main body can be folded. Through the above setting, the guardrail assembly can realize stable protection in the working stage, and can be folded in the non-working stage to reduce the occupied space; in addition, through the cooperation of the elastic member and the locking member, under the condition of no external force, the locking member can be automatically inserted into the second locking hole for locking and keeping stable, and when the locking is released, the locking member only needs to be pushed out of the second locking hole, so that the structure is simple and the operation is convenient; at the same time, the combined locking structure of the elastic member and the locking member is almost completely covered by the guardrail main body as a whole, which belongs to the built-in locking structure, and itself can be approximately regarded as not occupying additional storage space. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 It is a platform ladder structure schematic diagram of the guardrail assembly of the utility model embodiment in the unlocking state.

[0045] Figure 2 The utility model discloses a platform ladder structure schematic diagram of guardrail assembly in locking state for embodiment;

[0046] Figure 3 For Figure 2 The enlarged view of A in the middle;

[0047] Figure 4 The utility model discloses an explosion view of guardrail assembly for embodiment.

[0048] In the above drawing: 1, guardrail main body;11, inner chamber;12, first locking hole;13, guardrail structure;

[0049] 14, end cover;141, insertion site;142, exposed site;15, surrounding mechanism;151, strip structure;152, fixed part;1521, fixed ring;2, connecting seat;21, second locking hole;3, elastic part;4, locking part;5, hinged shaft;6, swivel hole;7, protection space. Specific implementation

[0050] The utility model will be further described below combining with the drawing and embodiment:

[0051] Embodiment: the following will be with the drawing and detailed description to the case of clear explanation, any person skilled in the art after understanding the embodiment of the case, when can by the technology taught by the case, change and modification, it does not deviate from the spirit and scope of the case.

[0052] The language of this paper is only for describing specific embodiments, and is not intended to limit the case. Singular forms such as "a", "this", "this", "this" and "this", as used herein, also include plural forms.

[0053] Referring to Figures 1-4 , guardrail assembly, including guardrail main body 1, connecting seat 2, elastic part 3, locking part 4, hinged shaft 5;

[0054] The guardrail main body 1 is connected (also can be said to be hinged) with the connecting seat 2 through the hinged shaft 5, and the guardrail main body 1 can rotate relative to the connecting seat 2 around the axis of the hinged shaft 5;

[0055] The guardrail main body 1 has inner chamber 11;The side wall of the guardrail main body 1 is provided with first locking hole 12 and second locking hole 21 respectively on the connecting seat 2;

[0056] The elastic part 3 is placed in the inner chamber 11;

[0057] The locking member 4 is arranged in the elastic member 3; part of the locking member 4 is arranged in the inner cavity 11, and part of the locking member 4 is arranged in the first locking hole 12;

[0058] The guardrail assembly is configured to have a locked state and an unlocked state; in the locked state, part of the locking member 4 (as a lock tongue part) is arranged in the second locking hole 21 to limit the movement of the guardrail body 1 relative to the connecting seat 2; in the unlocked state, the locking member 4 is separated from the second locking hole 21 so that the guardrail body 1 can move (or rotate) relative to the connecting seat 2.

[0059] When the guardrail assembly is in the locked state (corresponding to the working stage), the guardrail body 1 is unfolded to play a protective role; since part of the locking member 4 is arranged in the second locking hole 21 to limit the movement of the guardrail body 1 relative to the connecting seat 2, the stable protection of the guardrail body 1 (or the guardrail assembly) is achieved; before the guardrail body 1 is folded for storage, the guardrail assembly is switched from the locked state to the unlocked state; during the switching process, the locking member 4 is pressed to separate it from the second locking hole 21, so that the guardrail body 1 can be rotated and folded.

[0060] Through the above arrangement, stable protection of the guardrail assembly during the working stage can be achieved, and the guardrail assembly can be folded during the non-working stage to reduce the occupied space; in addition, through the cooperation of the elastic member 3 and the locking member 4, under the condition of no external force, the locking member 4 can be automatically inserted into the second locking hole 21 for locking and keeping stable; when the locking is released, the locking member 4 only needs to be pushed out of the second locking hole 21, so the structure is simple and the operation is convenient; at the same time, the combined locking structure of the elastic member 3 and the locking member 4 is almost completely covered by the guardrail body 1, and the combined locking structure itself can be approximately regarded as not occupying additional storage space.

[0061] The combined locking structure can be regarded as an internal structure, which is protected by the guardrail body 1 and can be separated from the guardrail body 1, so it can be replaced according to needs; when replacing, the locking member 4 can be pressed into the inner cavity 11.

[0062] The elastic member 3 can be arranged as an existing spring sheet. The elastic member 3 and the locking member 4 can be integrally arranged.

[0063] Referring to Figure 4 In this embodiment, the hinge shaft 5 is arranged as a half-hollow rivet; the guardrail body 1 and the connecting seat 2 are both provided with a rotation hole 6 corresponding to the arrangement of the half-hollow rivet.

[0064] The guardrail body 1 can rotate relative to the connecting seat 2 around the axis of the half-hollow rivet (or the axis of the rotation hole 6).

[0065] The semi-hollow rivet is a prior art structure, and the rotary arrangement is a conventional arrangement, which will not be described herein.

[0066] Referring to Figure 3 , Figure 4 In the embodiment, the connecting seats 2, the elastic members 3, the locking members 4, and the hinge shafts 5 are all provided in two; the two connecting seats 2 are respectively connected to the two symmetrical ends of the guardrail body 1 through the two hinge shafts 5; and the first locking holes 12 are provided in two.

[0067] Taking the guardrail body 1 as a square structure and including two symmetrical long sides and two symmetrical short sides as an example, the two connecting seats 2 can be respectively connected to the two symmetrical long sides or the two symmetrical short sides through the two hinge shafts 5.

[0068] Through the arrangement of the embodiment, the support points for supporting the guardrail body 1 are increased, so that the guardrail body 1 can stably rotate.

[0069] Referring to Figure 3 , Figure 4 In the embodiment, the first locking holes 12 are all provided in the guardrail body 1 along the distribution direction of the two connecting seats 2, and the second locking holes 21 are all provided in the corresponding connecting seats 2.

[0070] The locking member 4 includes two locking pins, and the two locking pins are symmetrically arranged along the distribution direction of the two connecting seats 2.

[0071] Taking the first locking hole 12 as an example, the first locking hole 12 is provided in the guardrail body 1, and at this time, the first locking hole 12 forms two openings in the guardrail body 1.

[0072] The arrangement of the embodiment has the same purpose as the previous embodiment, that is, to realize the stable rotation of the guardrail body 1, so that it can be used for a long time and prolong the service life, and at the same time, avoid safety accidents caused by rotation during work.

[0073] When unlocking, taking a single operator as an example, the operator's two hands are respectively placed outside the two ends of the guardrail body 1, and then the four locking pins are pressed to be separated from the corresponding second locking holes 21. After unlocking, the front end of the guardrail body 1 is lowered again by relying on the arms, and the rear end of the guardrail body 1 is lifted like a lever with the hinge shaft 5 as the fulcrum.

[0074] It should be noted that the weight distribution of the guardrail body 1 can be set, for example, the guardrail body 1 is divided into a first region and a second region, the weight of the first region is greater than that of the second region, and after pressing the four locking pins to be separated from the corresponding second locking holes 21, the guardrail body 1 rotates to one side along the predetermined setting.

[0075] Optionally, the material of the locking pin is one of carbon steel or stainless steel.

[0076] Optionally, the front end of the locking pin is conical or arc-shaped, facilitating the locking pin to enter and exit the second locking hole 21; the rear end of the locking pin is cylindrical to prevent it from being easily pulled out of the first locking hole 12.

[0077] Referring to Figure 3 , Figure 4 In the embodiment, the guardrail body 1 comprises a guardrail structure 13, two end covers 14 and an enclosing mechanism 15.

[0078] The guardrail structure 13 is connected with the connecting seat 2 through the hinge shaft 5.

[0079] The two end covers 14 and the guardrail structure 13 enclose to form the inner cavity 11.

[0080] The enclosing mechanism 15 and the guardrail structure 13 enclose to form the protection space 7.

[0081] Optionally, the cross section of the guardrail structure 13 is U-shaped. The guardrail structure 13 can be integrally formed or realized by twice bending of a profile, which has the process advantage of over-circularity.

[0082] The guardrail structure 13 and the enclosing mechanism 15 are protective structures, which prevent people from falling forward, backward or sideways. Specifically, the enclosing mechanism 15 and the guardrail structure 13 enclose to form the protection space 7 to protect people.

[0083] Referring to Figure 3 , Figure 4 In the embodiment, the end cover 14 comprises an insertion part 141 and an exposed part 142, the insertion part 141 is clamped in the inner cavity 11, and / or the size of the exposed part 142 is greater than the size of the inner cavity 11.

[0084] For the convenience of understanding, the cross sections of the exposed part 142, the insertion part 141 and the inner cavity 11 are all circular, as follows: the insertion part 141 is a cover body, the radius of the cross section of the insertion part 141 is the same as that of the inner cavity 11, so that the insertion part 141 can be clamped in the inner cavity 11 to be fixed; the exposed part 142 is a cover cap, the radius of the cross section of the exposed part 142 is greater than that of the inner cavity 11, so that all parts of the end cover 14 can not enter the inner cavity 11, facilitating the removal of the end cover 14.

[0085] The end cover 14 protects the inner cavity 11 to prevent sundries from entering the inner cavity 11.

[0086] Referring to Figure 3 , Figure 4In the embodiment, the enclosing mechanism 15 comprises a strip structure 151 and two fixing members 152; two ends of the strip structure 151 are connected with the guardrail structure 13 through the two fixing members 152 respectively.

[0087] The strip structure 151 can be regarded as a safety belt, and the strip structure 151 is used to protect the personnel from falling backward.

[0088] The fixing member 152 can be a mountain climbing safety buckle, and the fixing member 152 is used to realize quick dismounting and mounting of the strip structure 151.

[0089] Referring to Figure 3 , Figure 4 In the embodiment, the two end covers 14 are connected with the guardrail structure 13 through the two fixing members 152 respectively.

[0090] Optionally, the end cover 14 is partially inserted into the inner cavity 11, and the end cover 14 and the inner cavity 11 wall are both provided with a hole for the fixing member 152 to pass through.

[0091] Optionally, the fixing member 152 comprises a lifting ring and a bolt, and the bolt is used to fix the end cover 14.

[0092] Referring to Figure 3 , Figure 4 In the embodiment, the strip structure 151 is elastic; and / or the fixing member 152 comprises at least one fixing ring 1521 used to fix the strip structure 151.

[0093] The strip structure 151 can be made of elastic fiber material.

[0094] When the strip structure 151 is elastic, it can be deformed to a certain extent, and the size of the protection space 7 is adjusted when the strip structure 151 is deformed.

[0095] The fixing ring 1521 provides convenience for fixing the strip structure 151, for example, the two ends of the strip structure 151 are provided with sticky objects similar to Velcro, at this time, the two ends of the strip structure 151 enclose to form a matching ring, and the matching ring and the fixing ring 1521 are mutually penetrated, which can be referred to the arrangement between each chain ring in a chain.

[0096] The fixing ring 1521 can be single, two or more, which is suitable for strip structures 151 of different lengths.

[0097] Referring to Figure 3 , Figure 4 Figure 1 Figure 2 A platform ladder comprises the guardrail assembly in any of the above embodiments.

[0098] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A guardrail assembly characterized by: The guardrail assembly comprises a guardrail body (1), a connecting seat (2), an elastic member (3), a locking member (4) and a hinge shaft (5); The guardrail body (1) is hinged to the connecting seat (2) through the hinge shaft (5), and the guardrail body (1) can rotate around the hinge shaft (5); The guardrail body (1) has an inner cavity (11); a first locking hole (12) is arranged on the side wall of the guardrail body (1), and a second locking hole (21) is arranged on the connecting seat (2); The elastic member (3) and the locking member (4) are arranged in the inner cavity (11), and part of the locking member (4) extends out of the first locking hole (12) as a locking tongue under the action of the elastic member (3); The guardrail assembly is configured to have a locked state and an unlocked state; in the locked state, the locking tongue of the locking member (4) is engaged with the second locking hole (21) to limit the movement of the guardrail body (1) relative to the connecting seat (2); in the unlocked state, the locking tongue of the locking member (4) is separated from the second locking hole (21) to enable the guardrail body (1) to rotate relative to the connecting seat (2).

2. The guardrail assembly of claim 1, wherein: The hinge shaft (5) is provided as a semi-hollow rivet; the guardrail body (1) and the connecting seat (2) are both provided with a rotation hole (6) corresponding to the semi-hollow rivet.

3. The guardrail assembly of claim 1, wherein: The connecting seat (2), the elastic member (3), the locking member (4) and the hinge shaft (5) are all provided as two; the two connecting seats (2) are respectively hinged to the symmetrical two ends of the guardrail body (1) through the two hinge shafts (5); and the first locking hole (12) is provided as two.

4. The guardrail assembly of claim 3, wherein: Along the distribution direction of the two connecting seats (2), the first locking hole (12) is arranged through the guardrail body (1), and the second locking hole (21) is arranged through the corresponding connecting seat (2); The locking member (4) comprises two locking pins, and the two locking pins are symmetrically arranged in the distribution direction of the two connecting seats (2).

5. The guardrail assembly of claim 1, wherein: The guardrail body (1) comprises a guardrail structure (13), two end covers (14) and an enclosing mechanism (15); The guardrail structure (13) is connected to the connecting seat (2) through the hinge shaft (5); The two end covers (14) and the guardrail structure (13) enclose to form the inner cavity (11); The enclosing mechanism (15) and the guardrail structure (13) enclose to form a protection space (7).

6. The fence assembly of claim 5, wherein: The end cover (14) comprises an insertion part (141) and an exposed part (142), the insertion part (141) is engaged in the inner cavity (11); and / or the size of the exposed part (142) is greater than the size of the inner cavity (11).

7. The guardrail assembly of claim 5, wherein: The enclosing mechanism (15) comprises a strip structure (151) and two fixing members (152); the two ends of the strip structure (151) are respectively connected to the guardrail structure (13) through the two fixing members (152).

8. The guardrail assembly of claim 7, wherein: The two end covers (14) are respectively connected to the guardrail structure (13) through the two fixing members (152).

9. The guardrail assembly of claim 7, wherein: The strip structure (151) has elasticity; and / or the fixing member (152) comprises at least one fixing ring (1521) for fixing the strip structure (151).

10. A platform ladder characterized by: The guardrail assembly comprises the guardrail assembly according to any one of claims 1-9.

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