Table surface area expansion type climbing tool

Abstract

The utility model discloses a table top area expanding type climbing tool which comprises a climbing tool body, and the climbing tool body comprises a highest treading face, supporting legs, grab rails, a rotating module and a bearing piece. The supporting legs are arranged below the highest treading surface; the rotating module acts between the grab rail and the supporting legs, so that the grab rail has a supporting state and a storage state; the functions of assisting in climbing and increasing the highest treading surface are achieved by switching the grab rail between folding and supporting, if the highest treading surface needs to be increased, the lower portion of the grab rail is guided to be separated from the constraint surface, and the grab rail is guided by the guide rail part to slide upwards and be locked. The locked grab rail is located on the side portion of the climbing tool after deflecting by a set angle with the connecting piece as the rotating center, at the moment, the surface of the grab rail is parallel to the highest treading face, and the grab rail is used as a component for enlarging the highest treading face.

Description

Technical Field

[0001] This utility model relates to the technical field of climbing equipment, specifically to a climbing equipment with an expanded platform area. The climbing equipment can be an A-frame ladder, a single-step ladder, a climbing platform, or a car wash platform. Background Technology

[0002] When performing high-altitude operations, the work area is usually located at a high altitude. To facilitate workers' access to heights, ladders, platforms, and other climbing equipment are often needed. These devices not only provide a safe first access point but also ensure that workers can stand stably while working at heights, improving work efficiency and reducing the risk of accidents. By setting up ladders or platforms, workers can easily reach the target height and complete various work tasks.

[0003] A representative example is patent document CN201620435377.4, which discloses a hanging ladder with foldable handrails. The ladder has handrails on the side of the steps used to support the operator. When the handrails are open, they rotate upwards and face upwards, allowing the user to grip them for leverage while climbing the ladder. When folded, the handrails rotate downwards and fit snugly against the ladder body for easy storage. The switching and positioning of the handrails between open and folded states is achieved through a handrail locking device. The handrails can be installed in pairs.

[0004] The technical solution disclosed in the aforementioned patent documents demonstrates a work platform (hanging ladder) for climbing, which also has a handrail to assist in climbing, in order to solve the technical problem of inconvenient storage. However, there are still limitations in actual use, as follows:

[0005] First, in different work scenarios, due to the constraints of the bottom space, the platform cannot directly contact the surface of objects such as walls, which results in a gap between the platform and the wall. Then, when placing items, the items are prone to falling through the gap.

[0006] Secondly, this problem doesn't just occur when placing items; there's also a risk of insufficient footing space when users are operating the platform. To reach further, users sometimes stand on the edge of the platform, but there's a gap between the platform and the wall. If the operator stands too far out, their feet may dangle too much in the air, increasing the risk of falling.

[0007] Therefore, how to overcome the shortcomings of the existing technology mentioned above has become the subject of this utility model. Utility Model Content

[0008] This utility model provides a platform-expanding climbing tool, which aims to solve the technical problems mentioned in the background art.

[0009] To achieve the above objectives, the technical solution adopted by this utility model is: a platform area expansion climbing tool. The climbing tool includes a climbing tool body, which includes a highest stepping surface, support legs, handrails, a rotating module, and a support component.

[0010] The support leg is located under the highest step surface; the rotating module acts between the handrail and the support leg to give the handrail a supported state and a retracted state; when the handrail is in the supported state, the handrail extends upward beyond the highest step surface; when the handrail is in the retracted state, the handrail is flipped to the side of the highest step surface.

[0011] Furthermore, a support member is provided on the side of the highest step surface corresponding to the position when the handrail is in the retracted state. The support member has a support surface that supports the handrail under the retracted state.

[0012] The support surface abuts against the handrail and controls the deflection tendency of the handrail;

[0013] When the handrail abuts against the supporting surface, the upper surface of the handrail serves as an extension of the highest stepping surface.

[0014] In the above scheme, when the handrail abuts against the support surface, preferably, the surface of the handrail away from the support surface is configured to be at least flush with the highest step surface.

[0015] In the above scheme, preferably, all the supporting components are distributed along the length of the main body of the climbing equipment, so that the position of the handrail is fully restricted.

[0016] In the above scheme, both the support surface and the highest stepping surface are directly above the ground.

[0017] In the above scheme, the support legs at both ends of the main body of the climbing equipment are hinged.

[0018] In the above scheme, the constraint component can be set as a support block that can support the bottom of the handrail, or a support block with a U-shaped cross-section, or other structure that can support the handrail from the bottom when the handrail is supported.

[0019] In the above scheme, the installation positions of the connector and the guide rail are not fixed. That is, the connector can be set on the support leg or the handrail. Therefore, the guide rail can be set on the handrail or the support leg.

[0020] In the above scheme, the connection between the connector and the guide rail can be the connection between the screw and the elongated guide rail hole, or the connection between the guide rail strip and the limiting post inserted into the guide rail strip (for example, a U-shaped guide rail strip with an open cross section and a limiting post with a T-shaped cross section), or the connection between the guide rail sleeve and the threaded post.

[0021] In the above scheme, such as Figure 1 A toolbox can be installed at the top of the handrail, and this toolbox is movably connected to the handrail. This allows the toolbox to have both upright and flat states, as shown in the reference diagram. Figure 1 and Figure 7 .

[0022] In the above scheme, a footplate can be hinged to the bottom of the support leg, so that the contact area between the support leg and the ground is larger.

[0023] In a further technical solution, the support member includes at least two support blocks; the upper surface of each support block has a locking groove, and the inner sidewall of the locking groove is the support surface;

[0024] The two support blocks are the first support block and the second support block;

[0025] Both the first support block and the second support block have a locking groove on the side surface away from the ground;

[0026] The inner wall of the slot is the supporting surface.

[0027] The above design makes the handrail more stable when it is located on the side of the main body of the climbing equipment.

[0028] There are at least two support members, and these two support blocks are arranged along the length of the corresponding handrail.

[0029] In a further technical solution, the supporting component also includes a locking component; the locking component includes a locking pin, an elastic component, and an unlocking component;

[0030] The locking pin is installed on the support block with its head facing the locking groove; the elastic element acts on the locking pin, and its elastic force forces the head of the locking pin to extend towards the locking groove so as to lock the side of the handrail in the storage state; one end of the unlocking element is connected to the locking pin, and the other end serves as the unlocking operation end.

[0031] The unlocking component is a push bar that slides relative to the supporting block. The sliding direction of the push bar is consistent with the movement direction of the locking pin. One end of the push bar is positioned and connected to the tail end of the locking pin, while the other end extends out as the unlocking operation end.

[0032] Specifically, the main body of the climbing equipment has a mounting groove on the side surface opposite to the highest stepping surface;

[0033] A fixing block is provided on the side of the first support block away from the slot, and the fixing block is arranged along the length direction of the main body of the climbing equipment;

[0034] The support component also includes a locking component;

[0035] The locking component includes a locking pin, an elastic element, and an unlocking element. The unlocking element is inserted through the fixed block and is perpendicular to the fixed block. It can move along the axis of the through hole in the fixed block. The end of the unlocking element has a bent portion extending towards the main body of the climbing equipment into the mounting groove.

[0036] The locking pin is correspondingly provided with the first support block, and one end of the locking pin passes through the inner wall of the mounting groove and the first support block until it enters the locking groove;

[0037] The other end of the locking pin is positioned and connected to the bent portion;

[0038] The elastic element acts between the bent portion and the inner wall of the mounting groove, and the elastic element is arranged along the axial direction of the locking pin, so that the bent portion has a tendency to push the locking pin to always be in the locking groove.

[0039] The above design allows the handrail to be positioned on the side of the climbing equipment, thus preventing it from moving freely when folded up.

[0040] A further technical solution is that the side wall of the handrail has a locking hole; when the handrail abuts against the supporting surface, the through end of the locking pin is embedded in the locking hole.

[0041] The above design allows the handrail to be further limited by the locking hole that engages with the locking pin.

[0042] In a further technical solution, the guide rail includes a guide sleeve, and the guide sleeve has a first channel for accommodating the handrail.

[0043] The connector includes a threaded post, one end of which is fixedly connected to the circumferential surface of the guide sleeve, and the other end is positioned and connected to the side of the support leg.

[0044] The threaded post serves as the rotation center for the guide sleeve and the handrail to switch between folded and extended states.

[0045] With the above design, the cooperation between the guide sleeve and the threaded column allows the handrail to switch between folded and extended states, and the handrail will not wobble due to the restriction of the guide sleeve during the switching process.

[0046] The threaded post is positioned and connected to the side of the support leg. Specific connection methods include threaded connection, welding, plug-in connection, etc.

[0047] In a further technical solution, the side of the support leg has a first arc hole, the threaded post is inserted and positioned in the first arc hole, and a nut sleeve is positioned and connected at the insertion end of the threaded post to limit the axial direction of the threaded post.

[0048] The above design allows for detachment between the threaded post and the side of the support leg. If the threaded post were fixed to the side of the support leg, bending of the threaded post would make replacing the entire device difficult. The first arc hole is there to allow space for the threaded post, while the nut sleeve can be an existing technology, serving to secure the threaded post.

[0049] In a further technical solution, a stabilizing post is provided on the side of the support leg next to the threaded post;

[0050] A second arc hole is provided on the surface of the guide sleeve at the position corresponding to the stabilizing post. The stabilizing post is matched with the second arc hole. When the guide sleeve is positioned and connected to the side of the support leg through the threaded post, the stabilizing post is configured to be positioned inside the second arc hole.

[0051] The center of the second arc hole is located on the axis of the threaded post;

[0052] The second arc hole has a first bearing surface and a second bearing surface at its two ends, respectively; the first bearing surface is used to provide vertical support for the guide sleeve; the second bearing surface is used to provide lateral support for the guide sleeve.

[0053] When the handrail is in the supported state, the first bearing surface supports the stabilizing column to maintain the position of the handrail when it is upright.

[0054] When the handrail is in the folded state, the second bearing surface supports the stabilizing column to maintain the end position of the handrail parallel to the highest step surface.

[0055] Since the guide sleeve needs to rotate, the stability of the handrail is further ensured when switching between the folded and extended states by the cooperation of the stabilizing column and the second arc hole.

[0056] A further technical solution is that the inner wall of the first channel is provided with a protrusion;

[0057] The handrail has a recessed portion on its periphery that matches the protrusion, and the recessed portion is provided along the length direction of the handrail.

[0058] When the first channel accommodates the handrail, the protrusion is configured to be embedded in the recess.

[0059] The above design makes the handrail more stable when sliding up and down.

[0060] In a further technical solution, a first locking member and a second locking member are positioned and connected within the recessed portion;

[0061] When the handrail is in the supported state:

[0062] The second locking element is configured to be located on the lower end side of the handrail;

[0063] The second locking member serves as an upward sliding control unit that controls the upward sliding trend of the handrail after it slides up the guide sleeve by a set distance;

[0064] The first locking member is positioned above the second locking member;

[0065] The first locking member serves as a downward control unit that controls the downward trend of the handrail after it slides down a set distance along the guide sleeve.

[0066] With the above design, the handrail will stop moving after reaching a certain position during the up-and-down sliding process, and will not fall off.

[0067] In a further technical solution, the constraint component includes a constraint sleeve that is positioned and connected to the side of the support leg and located below the rotating module. The constraint sleeve has a second channel for accommodating the lower end of the handrail when it is in the supported state, and the inner circumferential surface of the second channel is the constraint surface.

[0068] The inner wall of the second channel is provided with a clearance groove at the position corresponding to the recess to avoid the second locking member.

[0069] With the above design, the constraint component will not limit the sliding of the handrail when it deflects and limits the handrail.

[0070] The terms "first," "second," etc., used in this article do not specifically refer to order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.

[0071] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.

[0072] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0073] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the case.

[0074] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0075] The working principle and advantages of this utility model are as follows:

[0076] In this invention, the handrail can be switched between folded and extended states to assist in climbing and increase the maximum stepping surface. Specifically, in use, the main body of the climbing equipment is erected directly by the support legs, and then the folded handrail is extended, so that the handrail is used as an auxiliary climbing component. If it is necessary to increase the maximum stepping surface, the lower part of the handrail is guided away from the constraint surface and locked by sliding upward through the guide rail. After locking, the handrail deflects at a set angle around the connector and is located on the side of the main body of the climbing equipment. The support surface abuts against the surface of the handrail and acts as a limiting part to control the deflection trend of the handrail. At this time, the surface of the handrail away from the support surface is configured to be parallel to the maximum stepping surface, so that the handrail is used as a component to increase the maximum stepping surface. Attached Figure Description

[0077] Appendix Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model;

[0078] Appendix Figure 2 This is a schematic diagram of the rotating module structure in an embodiment of the present utility model;

[0079] Appendix Figure 3 This is a schematic diagram of the guide rail structure in an embodiment of the present utility model;

[0080] Appendix Figure 4 This is a schematic diagram of the constraint component structure in an embodiment of the present utility model;

[0081] Appendix Figure 5 This is a schematic diagram of the handrail when it is supported in an embodiment of the present utility model;

[0082] Appendix Figure 6This is a schematic diagram of the first support block structure in an embodiment of the present utility model;

[0083] Appendix Figure 7 This is a schematic diagram of the handrail when folded in an embodiment of the present invention;

[0084] Appendix Figure 8 This is a schematic diagram of the guide sleeve structure in an embodiment of the present utility model;

[0085] Appendix Figure 9 This is a schematic diagram of the main structure of the climbing equipment in an embodiment of this utility model;

[0086] Appendix Figure 10 for Figure 9 A schematic diagram of the cross-sectional structure along the middle AA.

[0087] In the attached diagrams: 1. Climbing equipment; 2. Support leg; 3. Handrail; 4. Support component; 5. Rotating module; 6. Restraint component; 7. Highest step surface; 8. Support surface; 9. Restraint surface; 10. Connector; 11. Guide rail; 12. Guide sleeve; 13. First channel; 14. Threaded post; 15. First arc hole; 16. Stabilizing post; 17. Second arc hole; 18. First bearing surface; 19. Second bearing surface; 20. Protrusion; 21. Recess; 22. First locking component; 23. Second locking component; 24. Restraint sleeve; 25. Clearance groove; 26. First support block; 27. Second support block; 28. Mounting groove; 29. ​​Fixing block; 30. Locking component; 31. Locking pin; 32. Elastic component; 33. Unlocking component; 34. Locking hole. Detailed Implementation

[0088] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0089] Example: The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the examples of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.

[0090] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.

[0091] See appendix Figures 1-10 As shown, a platform area expansion climbing tool is provided. The climbing tool 1 includes a climbing tool body, which includes a highest stepping surface 7, support legs 2, handrails 3, rotating modules 5, and support components 4.

[0092] The highest step surface 7 is provided with the support leg 2; the rotating module 5 acts between the handrail 3 and the support leg 2 so that the handrail 3 has a supported state and a retracted state; when the handrail 3 is in the supported state, the handrail 3 extends upward beyond the highest step surface 7; when the handrail 3 is in the retracted state, the handrail 3 is flipped to the side of the highest step surface 7.

[0093] Furthermore, a support member 4 is provided on the side of the highest step surface 7, corresponding to the position of the handrail 3 when it is in the retracted state. The support member 4 has a support surface 8 that supports the handrail 3 under the retracted state.

[0094] The supporting surface 8 abuts against the handrail 3 and controls the deflection tendency of the handrail 3;

[0095] When the handrail 3 abuts against the supporting surface 8, the upper surface of the handrail 3 serves as an extension of the highest stepping surface 7.

[0096] In this embodiment, when the handrail 3 abuts against the support surface 8, preferably, the surface of the handrail 3 away from the support surface 8 is configured to be at least flush with the highest stepping surface 7.

[0097] In this embodiment, preferably, all the supporting members 4 are distributed along the length of the main body of the climbing equipment, so that the position of the handrail 3 can be fully restricted.

[0098] In this embodiment, both the supporting surface 8 and the highest stepping surface 7 are directly above the ground.

[0099] In this embodiment, the support legs 2 at both ends of the main body of the climbing equipment are hinged.

[0100] In this embodiment, the constraint component 6 can be configured as a support block that can support the bottom of the handrail 3, or a support block with a U-shaped cross-section, or other structures that can support the handrail 3 from the bottom when it is supported.

[0101] In this embodiment, the installation positions of the connector 10 and the guide rail 11 are not fixed. That is, the connector 10 can be installed on the support leg 2 or on the handrail 3. Therefore, the guide rail 11 can be installed on the handrail 3 or on the support leg 2.

[0102] In this embodiment, the connection between the connector 10 and the guide rail 11 can be the connection between the screw and the elongated guide rail hole, or the connection between the guide rail strip and the limiting post inserted into the guide rail strip (for example, a guide rail strip with an open cross section and a limiting post with a T-shaped cross section), or the connection between the guide rail sleeve and the threaded post 14.

[0103] In this embodiment, as Figure 1 A toolbox can be installed at the top of the handrail 3. This toolbox is movably connected to the handrail 3, allowing the toolbox to have both upright and flat states. The two states can be referenced. Figure 1 and Figure 7 .

[0104] In this embodiment, a footplate can be hinged to the bottom of the support leg 2, so that the contact area between the support leg 2 and the ground is larger.

[0105] In this invention, the handrail 3 can be switched between folded and extended states to assist in climbing and increase the maximum stepping surface 7. Specifically, in use, the main body of the climbing equipment is erected directly by the support leg 2. Then, the folded handrail 3 is extended, that is, the handrail 3 is deflected at a set angle around the connecting member 10 and then slides down and locks under the guidance of the guide rail 11. When erected, the upper part of the handrail 3 extends beyond the maximum stepping surface 7, and the lower part abuts against the constraint surface 9, and the constraint surface 9 provides support for the stepping surface. The deflection trend of the handrail 3 is controlled; if it is necessary to increase the maximum step surface 7, the lower part of the handrail 3 is guided to disengage from the constraint surface 9 and locked by the guide rail part 11. After locking, the handrail 3 deflects at a set angle with the connecting member 10 as the rotation center and is located on the side of the main body of the climbing equipment. The supporting surface 8 abuts against the surface of the handrail 3 and serves as a limiting part to control the deflection trend of the handrail 3. At this time, the surface of the handrail 3 away from the supporting surface 8 is configured to be parallel to the maximum step surface 7.

[0106] In some specific embodiments, there are at least two support members, and these two support blocks are arranged along the length of the corresponding handrail.

[0107] The support member 4 includes at least two support blocks; the upper surface of each support block has a locking groove, and the inner wall of the locking groove is the support surface 8.

[0108] The two support blocks are the first support block 26 and the second support block 27;

[0109] Both the first support block 26 and the second support block 27 have a locking groove on the side surface away from the ground;

[0110] The inner wall of the slot is the supporting surface 8.

[0111] The handrail 3 can be directly inserted into the support surface 8, but it is prone to wobbling.

[0112] Preferably, the locking groove is U-shaped, so that the handrail 3 can be fully locked in place.

[0113] The above design makes the handrail 3 more stable when it is located on the side of the main body of the climbing equipment.

[0114] In some specific embodiments, the support member 4 further includes a locking member 30; the locking member 30 includes a locking pin 31, an elastic member 32, and an unlocking member 33;

[0115] The locking pin 31 is inserted and positioned on the support block, with its head facing the locking groove; the elastic member 32 acts on the locking pin 31, and its elastic force forces the head of the locking pin 31 to extend towards the locking groove so as to lock the side of the handrail 3 in the storage state; one end of the unlocking member is connected to the locking pin 31, and the other end serves as the unlocking operation end.

[0116] In some specific embodiments, the unlocking component is a push bar that slides relative to the supporting block. The sliding direction of the push bar is consistent with the movement direction of the locking pin 31. One end of the push bar is positioned and connected to the tail end of the locking pin 31, while the other end extends out as the unlocking operation end.

[0117] Specifically, the main body of the climbing equipment has a mounting groove 28 on the side surface opposite to the highest stepping surface 7;

[0118] A fixing block 29 is provided on the side of the first support block 26 away from the slot, and the fixing block 29 is arranged along the length direction of the main body of the climbing equipment;

[0119] The supporting component 4 also includes a locking component 30;

[0120] The locking component 30 includes a locking pin 31, an elastic component 32, and an unlocking component 33. The unlocking component 33 is inserted through the fixing block 29. The unlocking component 33 is perpendicular to the fixing block 29 and can move along the axis of the through hole in the fixing block 29. The end of the unlocking component 33 has a bent portion extending towards the main body of the climbing equipment into the mounting groove 28.

[0121] The locking pin 31 is correspondingly provided with the first support block 26, and one end of the locking pin 31 passes through the inner wall of the mounting groove 28 and the first support block 26 until it enters the locking groove.

[0122] The other end of the locking pin 31 is positioned and connected to the bent portion;

[0123] The elastic element 32 acts between the bent portion and the inner wall of the mounting groove 28, and the elastic element 32 is arranged along the axial direction of the locking pin 31 so that the bent portion has a tendency to push the locking pin 31 to always be in the locking groove.

[0124] To solve the swaying problem, the handrail 3 is held in place by the locking component 30.

[0125] In some specific embodiments, the side wall of the handrail 3 has a locking hole 34; when the handrail 3 abuts against the supporting surface 8, the through end of the locking pin 31 is embedded in the locking hole 34.

[0126] Although the shaking problem has been solved, the phenomenon of sliding within the support surface 8 is still prone to occur. Therefore, this problem is solved by the cooperation of the locking pin 31 and the locking hole 34.

[0127] The specific steps are as follows:

[0128] When the handrail 3 enters the locking groove, it will first push the locking pin 31 open, so that the elastic element 32 (such as a spring or tension spring) will start to store force. Then, when the handrail 3 fully contacts the support surface 8, the through end of the locking pin 31 is embedded in the locking hole 34 to achieve locking. At the same time, the elastic element 32 resets and pushes the locking pin 31 to always be in the locking groove.

[0129] Then, whenever it is necessary to support the handrail 3, simply push the end of the unlocking component 33 (e.g., Figure 10 As shown, a pressing head can be installed at the end of the unlocking member 33, so that the unlocking member 33, along with its bent part, moves away from the locking slot. Then, the bent part pulls the elastic member 32 to start accumulating force, and at the same time, the bent part also pulls the through end of the locking pin 31 away from the locking hole 34, so that the lock of the handrail 3 is released.

[0130] Then the unlocking component 33 is released, and the elastic component 32 pulls the locking pin 31 and the unlocking component 33 to reset.

[0131] In some specific embodiments, the guide rail 11 includes a guide sleeve 12, and the guide sleeve 12 is provided with a first channel 13 for accommodating the handrail 3;

[0132] The connector 10 includes a threaded post 14, one end of which is fixedly connected to the circumferential surface of the guide sleeve 12, and the other end is positioned and connected to the side of the support leg 2.

[0133] The threaded post 14 serves as the rotation center for the guide sleeve 12 and the handrail 3 to switch between folded and extended states.

[0134] With the above design, the cooperation between the guide sleeve 12 and the threaded post 14 can fully enable the handrail 3 to switch between the folded and the extended states. During the switching process, since the handrail 3 is inserted into the first channel 13, the guide sleeve 12 can restrict the handrail 3 so that it will not shake randomly.

[0135] In some specific embodiments, the support leg 2 has a first arc hole 15 on its side, the threaded post 14 passes through and is positioned in the first arc hole 15, and a nut sleeve is positioned and connected at the through end of the threaded post 14 to limit the axial direction of the threaded post 14.

[0136] The above design allows for the detachment of the threaded post 14 from the side of the support leg 2. If the threaded post 14 were fixed to the side of the support leg 2, bending of the threaded post 14 would make replacing the entire device difficult. The first arc hole 15 is there to allow space for the threaded post 14, while the nut sleeve can be an existing technology, serving to fix the threaded post 14.

[0137] In some specific embodiments, a stabilizing post 16 is provided on the side of the support leg 2 next to the threaded post 14.

[0138] The guide sleeve 12 has a second arc hole 17 at the position corresponding to the stabilizing column 16. The stabilizing column 16 is matched with the second arc hole 17. When the guide sleeve 12 is positioned and connected to the side of the support leg 2 through the threaded column 14, the stabilizing column 16 is configured to be positioned inside the second arc hole 17.

[0139] The center of the second arc hole 17 is located on the axis of the threaded post 14;

[0140] The second arc hole 17 has a first bearing surface 18 and a second bearing surface 19 at its two ends; the first bearing surface 18 is used to provide vertical support for the guide sleeve 12; the second bearing surface 19 is used to provide lateral support for the guide sleeve 12.

[0141] When the handrail 3 is in the supported state, the first bearing surface 18 supports the stabilizing column 16 to maintain the position of the handrail 3 when it is upright.

[0142] When the handrail 3 is in the folded state, the second bearing surface 19 supports the stabilizing column 16 to maintain the end position of the handrail 3 parallel to the highest step surface 7.

[0143] Since the guide sleeve 12 needs to rotate, the stability of the handrail 3 is further ensured when switching between the folded and extended states by the cooperation of the stabilizing column 16 and the second arc hole 17.

[0144] The specific operation for rotating the guide sleeve 12 is as follows:

[0145] First, the guide sleeve 12 with the welded threaded column 14 is abutted against the upper side wall of the support leg 2. During the abutment, the threaded column 14 needs to be positioned inside the first arc hole 15. At the same time, a nut sleeve is positioned and connected at the through end of the threaded column 14 to limit the axial direction of the threaded column 14.

[0146] Then the guide sleeve 12 can be guided to rotate;

[0147] Since the rotation of the guide sleeve 12 is driven by the handrail 3, the rotation of the guide sleeve 12 indicates that the handrail 3 has rotated. Therefore, the following explanation uses the perspective of the guide sleeve 12 to show that the guide sleeve 12 and the handrail 3 rotate together.

[0148] When the guide sleeve 12 deflects around the threaded post 14 as the rotation center, once the handrail 3 is in the supported state, the first bearing surface 18 supports the stabilizing post 16 to maintain the position of the handrail 3 when it is upright; once the handrail 3 is in the folded state, the second bearing surface 19 supports the stabilizing post 16 to maintain the end position of the handrail 3 parallel to the highest stepping surface 7.

[0149] In some specific embodiments, the inner sidewall of the first channel 13 is provided with a protrusion 20;

[0150] The handrail 3 has a recess 21 on its periphery that matches the protrusion 20, and the recess 21 is arranged along the length direction of the handrail 3;

[0151] When the first channel 13 accommodates the handrail 3, the protrusion 20 is configured to be embedded in the recess 21.

[0152] The above design makes the handrail 3 more stable when sliding up and down.

[0153] Specifically, when the handrail 3 is inserted into the first channel 13, the protrusion 20 is embedded in the recess 21, so that the handrail 3 can only slide up and down and move along the length of the handrail 3. Once a deflection occurs, the protrusion 20 will abut against the inner wall of the recess 21, making the handrail 3 more stable.

[0154] In some specific implementations...

[0155] The recessed portion 21 is provided with a first locking member 22 and a second locking member 23.

[0156] When the handrail 3 is in the supported state:

[0157] The second locking member 23 is configured to be located on the lower end side near the handrail 3;

[0158] The second locking member 23 serves as an upward sliding control unit that controls the upward sliding trend of the handrail 3 after it slides up the guide sleeve 12 by a set distance;

[0159] The first locking member 22 is disposed above the second locking member 23;

[0160] The first locking member 22 serves as a downward control unit that controls the downward trend of the handrail 3 after it slides down the guide sleeve 12 by a set distance.

[0161] With the above design, the handrail 3 will stop moving after reaching a certain position during the up-and-down sliding process, and will not fall off.

[0162] The first locking member 22 and the second locking member 23 have the same structure, such as Figure 2 , Figure 3 As shown, they all consist of a stop block and a screw that fixes the stop block, but they are not limited to this structure. It can also be a stop block that is just a screw or glued together.

[0163] In some specific embodiments, the constraint component 6 includes a constraint sleeve 24 positioned and connected to the side of the support leg 2 and located below the rotating module 5. The constraint sleeve 24 has a second channel for accommodating the lower end of the handrail 3 when it is in the supported state, and the inner circumferential surface of the second channel is the constraint surface 9.

[0164] The inner wall of the second channel is provided with a relief groove 25 at the position corresponding to the recess 21, so as to avoid the second locking member 23.

[0165] With the above design, the constraint component 6 will not limit the sliding of the handrail 3 when it deflects and limits the handrail 3.

[0166] The operation to lock the position of handrail 3 is as follows:

[0167] (When switching from the supported state to the folded state) the lower part of the handrail 3 detaches from the constraint surface 9 and slides out of the second channel, and slides upward through the guide rail 11. After the handrail 3 slides upward along the first channel 13 in the guide sleeve 12 for a set distance, the second locking member 23 will abut against the protrusion 20, so that the upward sliding trend of the handrail 3 is controlled.

[0168] (When switching from the folded state to the supported state) After the handrail 3 is deflected by a set angle with the connecting member 10 as the rotation center, it stands up. At this time, the handrail 3 is pushed down. When the lower end of the handrail 3 is inserted into the second channel, the lower part of the handrail 3 is restricted by the constraint surface 9. The first locking member 22 abuts against the protrusion 20, so that the downward trend of the handrail 3 is controlled.

[0169] In both processes, due to the presence of the clearance groove 25, the second locking member 23 will be avoided when the handrail 3 slides up and down, and there will be no phenomenon of not being able to insert or pull out the second channel.

[0170] Working principle:

[0171] First, the guide sleeve 12 with the welded threaded post 14 is abutted against the upper side wall of the support leg 2. During abutment, the threaded post 14 needs to be positioned inside the first arc hole 15. At the same time, a nut sleeve is positioned and connected at the through end of the threaded post 14 to limit the axial direction of the threaded post 14. Simultaneously, the handrail 3 is inserted into the first channel 13 and the second channel.

[0172] Because the handrail 3 can switch between folded and extended states, it can assist in climbing and increase the maximum step surface 7.

[0173] Therefore, when using it, the main body of the climbing equipment is directly erected by the support leg 2, and then the folded handrail 3 is raised, that is, the folded state is switched to the raised state.

[0174] At this point, the handrail 3 stands upright after deflecting a set angle around the threaded post 14. Then, it slides down, and when the lower end of the handrail 3 inserts into the second channel, its lower part is restricted by the constraint surface 9. The first locking member 22 abuts against the protrusion 20, thus controlling the downward trend of the handrail 3. The upper part of the now-erected handrail 3 extends beyond the highest stepping surface 7, while its lower part abuts against the constraint surface 9. The constraint surface 9 controls the deflection trend of the handrail 3, allowing it to be used as an auxiliary component for climbing.

[0175] If you need to increase the maximum step surface area by 7, switch from the extended state to the folded state.

[0176] The lower part of the handrail 3 detaches from the constraint surface 9 and slides out of the second channel, then slides upwards guided by the guide rail 11. After the handrail 3 slides upwards a set distance along the first channel 13 inside the guide sleeve 12, the second locking member 23 abuts against the protrusion 20, thereby controlling the upward sliding trend of the handrail 3.

[0177] Subsequently, the handrail 3 deflects at a set angle around the threaded column 14 and is positioned on the side of the main body of the climbing equipment. The supporting surface 8 abuts against the surface of the handrail 3 and serves as a limiting part to control the deflection trend of the handrail 3. At this time, the surface of the handrail 3 away from the supporting surface 8 is configured to be parallel to the highest stepping surface 7, so that the handrail 3 is used as a component to increase the highest stepping surface 7.

[0178] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A platform-area-expanding climbing device, characterized in that, The climbing equipment (1) includes a climbing equipment body, which includes a highest stepping surface (7), support legs (2), handrails (3), a rotating module (5) and a support component (4). The highest step surface (7) is provided with the support leg (2); the rotating module (5) acts between the handrail (3) and the support leg (2) so that the handrail (3) has a supporting state and a retracted state; when the handrail (3) is in the supporting state, the handrail (3) extends upward beyond the highest step surface (7); when the handrail (3) is in the retracted state, the handrail (3) is flipped to the side of the highest step surface (7); Furthermore, the support member (4) is provided on the side of the highest step surface (7) corresponding to the position when the handrail (3) is in the retracted state. The support member (4) has a support surface (8) that supports the handrail (3) in the retracted state. The supporting surface (8) abuts against the handrail (3) and controls the deflection tendency of the handrail (3); When the handrail (3) abuts against the support surface (8), the upper surface of the handrail (3) serves as an extension of the highest step surface (7).

2. The platform-expanding climbing tool according to claim 1, characterized in that: The support member (4) includes at least two support blocks; the upper surface of each support block has a locking groove, and the inner wall of the locking groove is the support surface (8).

3. The platform area expansion climbing tool according to claim 2, characterized in that: The support member (4) consists of at least two blocks, which are arranged along the length of the corresponding handrail (3).

4. The platform area expansion climbing tool according to claim 2, characterized in that: The supporting member (4) also includes a locking member (30); the locking member (30) includes a locking pin (31), an elastic member (32), and an unlocking member (33); The locking pin (31) is set on the support block with its head facing the slot; the elastic element (32) acts on the locking pin (31), and its elastic force forces the head of the locking pin (31) to extend towards the slot to lock the side of the armrest (3) in the storage state; one end of the unlocking element is connected to the locking pin (31), and the other end serves as the unlocking operation end.

5. The platform area expansion climbing tool according to claim 4, characterized in that: The unlocking component is a push bar that slides relative to the supporting block. The sliding direction of the push bar is consistent with the movement direction of the locking pin (31). One end of the push bar is positioned and connected to the tail end of the locking pin (31), while the other end extends out as the unlocking operation end.

6. The platform area expansion climbing tool according to claim 4, characterized in that: The handrail (3) has a locking hole (34) on its side wall; when the handrail (3) abuts against the support surface (8), the through end of the locking pin (31) is locked into the locking hole (34).

7. The platform area expansion climbing tool according to claim 1, characterized in that: The rotating module (5) includes a connector (10) and a guide rail (11); one of the connector (10) and the guide rail (11) is located on the side of the support leg (2) near the main body of the climbing equipment, and the other is located on the side of the handrail (3).

8. The platform area expansion climbing tool according to claim 7, characterized in that: The guide rail (11) includes a guide sleeve (12), and the guide sleeve (12) has a first channel (13) for accommodating the handrail (3). The connector (10) includes a threaded post (14); The threaded post (14) is located between the guide sleeve (12) and the main body of the climbing equipment. The threaded post (14) serves as the rotation center for the guide sleeve (12) and the handrail (3) to switch between folded and extended states.

9. The platform area expansion climbing tool according to claim 8, characterized in that: The side of the support leg (2) is provided with a stabilizing column (16) next to the threaded column (14). The guide sleeve (12) has a second arc hole (17) at the position corresponding to the stabilizing column (16) on its surface. The stabilizing column (16) is matched with the second arc hole (17). When the guide sleeve (12) is positioned and connected to the side of the support leg (2) through the threaded column (14), the stabilizing column (16) is configured to be positioned inside the second arc hole (17). The center of the second arc hole (17) is located on the axis of the threaded post (14); The second arc hole (17) has a first bearing surface (18) and a second bearing surface (19) at its two ends respectively; the first bearing surface (18) is used to provide vertical support for the guide sleeve (12); the second bearing surface (19) is used to provide lateral support for the guide sleeve (12); When the handrail (3) is in the supported state, the first bearing surface (18) supports the stabilizing column (16) to maintain the position of the handrail (3) when it is upright; When the handrail (3) is in a folded state, the second bearing surface (19) supports the stabilizing column (16) to maintain the end position of the handrail (3) parallel to the highest step surface (7).

10. The platform-area-expanding climbing tool according to claim 9, characterized in that: The inner wall of the first channel (13) is provided with a protrusion (20). The handrail (3) has a recess (21) on its periphery that matches the protrusion (20), and the recess (21) is arranged along the length direction of the handrail (3). When the first channel (13) accommodates the handrail (3), the protrusion (20) is configured to be embedded in the recess (21). The recess (21) is positioned and connected with a first locking member (22) and a second locking member (23). When the handrail (3) is in the supported state: The second locking member (23) is configured to be located on the lower end side near the handrail (3); The second locking member (23) is an upward sliding control unit that controls the upward sliding trend of the handrail (3) after it slides up the guide sleeve (12) by a set distance; The first locking member (22) is disposed above the second locking member (23); The first locking member (22) is a downward control unit that controls the downward trend of the handrail (3) after it slides down a set distance along the guide sleeve (12).

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