CN111114572B

CN111114572B - Externally hung ladder, sleeping berth and carriage

Info

Publication number: CN111114572B
Application number: CN202010047203.1A
Authority: CN
Inventors: 罗章陶; 冯广辉; 许海山; 杨醒锋; 杨余
Original assignee: Guangzhou Guangleng Huaxu Refrigeration & Air Conditioning Industry Co ltd
Current assignee: Guangzhou Guangleng Huaxu Refrigeration & Air Conditioning Industry Co ltd
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2021-09-14
Anticipated expiration: 2040-01-16
Also published as: CN111114572A

Abstract

The invention discloses an externally-hung ladder, a sleeping berth and a carriage.A frame main body is provided with an installation groove, and a pedal assembly is arranged in the installation groove to form a stepping level; then, link to each other through first connecting portion and second connecting portion for pedal subassembly stable connection is in the frame main part, thereby accomplishes the equipment of outer hanging ladder, so, has reduced the assembly degree of difficulty, greatly improves the assembly efficiency of outer hanging ladder. Because pedal subassembly and frame main part are two independent structures, and first connecting portion can be dismantled with the second connecting portion and be connected, consequently, when trampling portion fracture or wearing and tearing, only need break off first connecting portion and second connecting portion, can carry out independent maintenance, the later maintenance work of convenient outer hanging ladder to the portion of trampling on the pedal subassembly. Simultaneously, the pedal assembly of this embodiment is located the mounting groove, avoids trampling the outer hanging ladder of portion protrusion for outer hanging ladder guarantees the structure unanimity in whole outward appearance, has promoted the outward appearance effect of outer hanging ladder greatly.

Description

Externally hung ladder, sleeping berth and carriage

Technical Field

The invention relates to the technical field of ladders, in particular to an externally-hung ladder, a sleeping berth and a carriage.

Background

The ladder is widely applied to life as a climbing tool, wherein the ladder can be divided into an externally hung type and an embedded type according to the installation state. The externally hung ladder is hung on the surface of an object, such as: a sleeping berth of a train, a bed in a dormitory, tank bodies and the like.

On the sleeper of train, outer hanging ladder adopts many rod irons or steel sheet mutual overlap joint usually to through the welding mode, interconnect between rod irons or the steel sheet. However, the external ladder requires a professional welding technique, which complicates the assembly of the external ladder and seriously affects the assembly efficiency of the external ladder. Meanwhile, when the pedal part is broken or abraded, the whole ladder needs to be replaced completely, so that the ladder is inconvenient to maintain.

Disclosure of Invention

Therefore, the external-hanging ladder, the sleeping berth and the carriage are needed to be provided, the quick assembly is convenient, and the assembly efficiency is improved; meanwhile, the pedal part can be independently maintained, and later maintenance work is greatly facilitated.

The technical scheme is as follows:

an externally hung ladder comprising: the frame comprises a frame main body, wherein a mounting groove is formed in the frame main body; and the pedal assembly is arranged in the mounting groove, the pedal assembly is provided with a first connecting part, the frame body is provided with a second connecting part which can be detachably connected with the first connecting part, and the pedal assembly is provided with a pedal part.

According to the externally-hung ladder, the frame main body is used as a supporting main body, so that enough supporting force is provided for a user to climb; then, an installation groove is formed in the frame main body, and a pedal assembly is installed in the installation groove to form a stepping level; finally, link to each other with the second connecting portion through first connecting portion for pedal subassembly stable connection is in the frame main part, thereby accomplishes the equipment of outer hanging ladder, so, has reduced the assembly degree of difficulty, greatly improves the assembly efficiency of outer hanging ladder. Because pedal subassembly and frame main part are two independent structures, and first connecting portion can be dismantled with the second connecting portion and be connected, consequently, when trampling portion fracture or wearing and tearing, only need break off first connecting portion and second connecting portion, can carry out independent maintenance, the later maintenance work of convenient outer hanging ladder to the portion of trampling on the pedal subassembly. Simultaneously, the pedal assembly of this scheme is located the mounting groove, effectively avoids trampling the outer hanging ladder of portion protrusion for outer hanging ladder guarantees the structure unanimity in whole outward appearance, has promoted the outward appearance effect of outer hanging ladder greatly.

The principle and effect of the invention will be further explained by combining the above scheme:

in one embodiment, an accommodating cavity communicated with the mounting groove is formed in the frame main body, the second connecting portion is arranged on the wall of the accommodating cavity, and the first connecting portion can extend into the accommodating cavity from the mounting groove and is detachably connected with the second connecting portion.

In one embodiment, the first connecting portion includes a clamping block and a protrusion disposed on the clamping block, the second connecting portion is provided with a clamping groove, the clamping block is clamped in the clamping groove, and the protrusion abuts against a side surface of the second connecting portion facing away from the pedal assembly.

In one embodiment, the footrest assembly is a frame structure having a perimeter that fits within the slot opening of the mounting slot.

In one embodiment, the first connecting portions are two or more, the two or more first connecting portions are arranged on the side surface of the pedal assembly at intervals, and the second connecting portions are arranged along the circumferential direction of the mounting groove.

In one embodiment, the wall of the accommodating cavity is provided with an installation seam allowance, the installation seam allowance is arranged along the circumferential direction of the installation groove, and the pedal assembly is clamped in the installation seam allowance.

In one embodiment, the externally-hung ladder further comprises a reinforcing rib connected between the cavity wall of the accommodating cavity and the second connecting part.

In one embodiment, the pedal assembly includes a pedal frame and a flexible sleeve wrapped around the pedal frame, the first connecting portion is disposed on the pedal frame, and the pedal portion is disposed on the flexible sleeve.

In one embodiment, the frame body includes a first shell and a second shell that are matched with each other, the mounting groove is disposed through the first shell and the second shell, and the second connecting portion is disposed on the first shell and/or the second shell.

A sleeping berth comprises a sleeping berth body and the externally-hung ladder, wherein the frame main body is arranged on the sleeping berth body.

The sleeping berth adopts the externally-hung ladder, takes the frame main body as a supporting main body, is arranged on the sleeping berth body and provides enough supporting force for a user to climb; then, an installation groove is formed in the frame main body, and a pedal assembly is installed in the installation groove to form a stepping level; finally, link to each other with the second connecting portion through first connecting portion for pedal subassembly stable connection is in the frame main part, thereby accomplishes the equipment of outer hanging ladder, so, has reduced the assembly degree of difficulty, greatly improves the assembly efficiency of outer hanging ladder. Because pedal subassembly and frame main part are two independent structures, and first connecting portion can be dismantled with the second connecting portion and be connected, consequently, when trampling portion fracture or wearing and tearing, only need break off first connecting portion and second connecting portion, can carry out independent maintenance, the later maintenance work of convenient outer hanging ladder to the portion of trampling on the pedal subassembly. Simultaneously, the pedal assembly of this scheme is located the mounting groove, effectively avoids trampling the outer hanging ladder of portion protrusion for outer hanging ladder guarantees the structure unanimity in whole outward appearance, has promoted the outward appearance effect of outer hanging ladder greatly.

The carriage comprises a carriage body and the sleeper, wherein the sleeper body is arranged in the carriage body.

The carriage adopts the externally-hung ladder, takes the frame main body as a support main body, is arranged on the sleeper body and provides enough support force for a user to climb; then, an installation groove is formed in the frame main body, and a pedal assembly is installed in the installation groove to form a stepping level; finally, link to each other with the second connecting portion through first connecting portion for pedal subassembly stable connection is in the frame main part, thereby accomplishes the equipment of outer hanging ladder, so, has reduced the assembly degree of difficulty, greatly improves the assembly efficiency of outer hanging ladder. Because pedal subassembly and frame main part are two independent structures, and first connecting portion can be dismantled with the second connecting portion and be connected, consequently, when trampling portion fracture or wearing and tearing, only need break off first connecting portion and second connecting portion, can carry out independent maintenance, the later maintenance work of convenient outer hanging ladder to the portion of trampling on the pedal subassembly. Simultaneously, the pedal assembly of this scheme is located the mounting groove, effectively avoids trampling the outer hanging ladder of portion protrusion for outer hanging ladder guarantees the structure unanimity in whole outward appearance, has promoted the outward appearance effect of outer hanging ladder greatly.

Drawings

FIG. 1 is a perspective view of an externally-mounted ladder assembly according to an embodiment of the present invention;

FIG. 2 is an exploded view of an externally hung ladder according to one embodiment of the present invention;

FIG. 3 is an enlarged view of the structure at circle A in FIG. 2;

FIG. 4 is a schematic view of a footrest assembly in accordance with one embodiment of the present invention;

FIG. 5 is an exploded perspective view of the footrest assembly in accordance with one embodiment of the present invention;

FIG. 6 is a partial cross-sectional view of an externally hung ladder structure according to one embodiment of the present invention;

FIG. 7 is another perspective view of an externally hung ladder structure according to an embodiment of the present invention;

fig. 8 is another perspective view of an externally-hung ladder according to an embodiment of the present invention.

Description of reference numerals:

100. the outer hanging ladder comprises a main frame body, a mounting groove, a mounting cavity, a second connecting portion, a 1121, a clamping groove, a 113, an accommodating cavity, a 114, a mounting spigot, 115, a first shell, a 116, a second shell, a 117, a bayonet, 1171, a third mounting hole, a 120, a pedal assembly, a 121, a first connecting portion, a 1211, a clamping block, a 1212, a protrusion, a 122, a pedal portion, 1221, a cleat, a 123, a pedal framework, 1231, a first bracket, a 1232, a second bracket, 1233, a first bearing piece, 1234, a second bearing piece, 1235, a first clamping portion, 124, a soft sleeve, 1241, a second clamping portion, 130, a reinforcing rib, 140, a stand column, 141 and a first mounting hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The terms "first" and "second" used herein do not denote any particular order or quantity, but rather are used to distinguish one element from another.

In one embodiment, referring to fig. 1 and 2, an externally-hung ladder 100 includes: the frame body 110 and the footrest assembly 120, the frame body 110 is provided with a mounting groove 111. The pedal assembly 120 is installed in the installation groove 111, the pedal assembly 120 is provided with a first connection portion 121, the frame body 110 is provided with a second connection portion 112 detachably connected to the first connection portion 121, and the pedal assembly 120 is provided with a pedal portion 122.

The externally-hung ladder 100 takes the frame main body 110 as a support main body, and provides enough support force for a user to climb; then, a mounting groove 111 is formed on the frame body 110, and a pedal assembly 120 is mounted in the mounting groove 111 to form a stepping level; finally, the first connecting part 121 is connected with the second connecting part 112, so that the footrest assembly 120 is stably connected to the frame body 110, thereby completing the assembly of the externally-hung ladder 100, thus reducing the assembly difficulty and greatly improving the assembly efficiency of the externally-hung ladder 100. Because the pedal assembly 120 and the frame body 110 are two independent structures, and the first connecting portion 121 and the second connecting portion 112 are detachably connected, when the pedal portion is broken or worn, the pedal portion on the pedal assembly 120 can be independently maintained only by disconnecting the first connecting portion 121 and the second connecting portion 112, so that the later maintenance work of the externally-hung ladder 100 is facilitated. Meanwhile, the pedal assembly 120 of the present embodiment is located in the mounting groove 111, so as to effectively prevent the treading part from protruding out of the external hanging ladder 100, so that the external hanging ladder 100 is consistent in structure in the overall appearance, and the appearance effect of the external hanging ladder 100 is greatly improved.

It should be noted that the application place of the externally-hung ladder 100 is not specifically limited in this embodiment, and only the climbing assistance is required. Such as: the frame body 110 may be installed on a sleeper in a train, a bed in a dormitory, a tank, and the like.

It should be noted that the mounting groove 111 of the present embodiment may be a through hole structure or a blind hole structure, that is, one side of the frame body 110 is in an open state, and the other side is in a closed state. Meanwhile, the shape of the mounting groove 111 of the present embodiment may be various, for example, circular, oval, triangular, square, etc.

Optionally, the first connection portion 121 and the second connection portion 112 are detachably connected by a clamping, a bolt, a pin, or the like.

Specifically, referring to fig. 1, the frame body 110 is rounded at the side, bottom and top, so that the frame body 110 is rounded to avoid damage to the user.

Further, referring to fig. 2, the frame body 110 is provided with an accommodating cavity 113 communicating with the mounting groove 111. The second connection portion 112 is provided on a wall of the accommodation chamber 113. The first connecting portion 121 can extend into the accommodating cavity 113 from the mounting groove 111 and is detachably connected with the second connecting portion 112. It can be seen that when the footrest assembly 120 is positioned in the mounting slots 111, the first connection parts 121 are extended into the receiving cavities 113 through the mounting slots 111 and are completely connected with the second connection parts 112, such that the connection structure between the footrest assembly 120 and the frame body 110 is hidden in the receiving cavities 113, thereby ensuring a tight structure between the footrest assembly 120 and the frame body 110 and thus enhancing the integrity of the extension ladder 100. Meanwhile, the accommodating cavity 113 is formed in the frame body 110, so that the frame body 110 is of a hollow structure, the overall weight of the frame body 110 is reduced, and the overall structure of the externally-hung ladder 100 is lighter.

Further, referring to fig. 4 and 6, the first connecting portion 121 includes a latch 1211 and a protrusion 1212 disposed on the latch 1211. The second connecting portion 112 is provided with a locking slot 1121. The latch 1211 is engaged with the latch groove 1121, and the protrusion 1212 abuts against a side surface of the second connecting portion 112 facing away from the footrest assembly 120. Therefore, the connection manner of the first connection portion 121 and the second connection portion 112 of the present embodiment is a clamping manner, that is, the fixture 1211 is clamped into the clamping groove 1121, so that the protrusion 1212 and the pedal assembly 120 respectively abut against two opposite side surfaces of the second connection portion 112.

In another embodiment, the first connecting portion 121 and the second connecting portion 112 are engaged in an opposite manner, that is, the first connecting portion 121 is provided with a locking slot 1121, and the second connecting portion 112 includes a locking block 1211 and a protrusion 1212 provided on the locking block 1211.

In one embodiment, referring to fig. 1 and 4, the footrest assembly 120 is a frame structure. The periphery of the frame structure is fitted with the notches of the mounting slots 111. As such, the footrest assembly 120 is designed to be a frame structure so that the footrest assembly 120 fits better within the mounting slots 111, making the structure of the extension ladder 100 more compact and stable. Meanwhile, the consistency of the external hanging ladder 100 on the appearance is ensured, which is beneficial to improving the appearance effect of the external hanging ladder 100.

It should be noted that the present embodiment does not specifically limit the shape of the footrest assembly 120, and only needs to be installed in the installation groove 111. For example, the footrest assembly 120 can be circular, oval, triangular, square, etc.

In another embodiment, the footrest assembly 120 can be configured as a plate-like structure, a concave structure, or the like. When the footrest assembly 120 is designed in a plate-like or concave configuration, the portions of the walls of the mounting channel 111 that are not in contact with the footrest assembly 120 may be sealed by other means to ensure the structural integrity of the extension ladder 100.

Further, referring to fig. 2 and 4, the number of the first connecting portions 121 is two or more. The two or more first connection parts 121 are spaced apart from each other at the side of the footrest assembly 120, and the second connection parts 112 are disposed along the circumferential direction of the mounting grooves 111, so that the number of the first connection parts 121 is increased, thereby increasing the number of connections between the footrest assembly 120 and the frame body 110 and improving the overall structural strength of the extension ladder 100.

Specifically, referring to fig. 4, the number of the first connecting portions 121 is twelve, two first connecting portions 121 are disposed on both left and right sides of the pedal assembly 120, and four first connecting portions 121 are disposed on both upper and lower sides of the pedal assembly 120.

In one embodiment, referring to fig. 3 and 4, the cavity wall of the accommodating cavity 113 is provided with a mounting spigot 114. The mounting seam allowance 114 is provided along the circumferential direction of the mounting groove 111. The footrest assemblies 120 are snapped into the mounting notches 114. As can be seen, during assembly of the extension ladder 100, the footrest assemblies 120 are positioned within the mounting slots 111 such that the perimeter of the footrest assemblies 120 extend into the receiving cavities 113. Because the chamber wall that holds chamber 113 is equipped with corresponding installation tang 114, consequently, go into pedal assembly 120 card in the installation tang 114 for pedal assembly 120 is more stable in mounting groove 111, avoids pedal assembly 120 to take place in mounting groove 111 and rocks about, so, improves the structural stability of outer hanging ladder 100 greatly. Meanwhile, the corresponding mounting seam allowances 114 are arranged on the wall of the accommodating cavity 113, so that the peripheries of the pedal assemblies 120 are all hidden in the accommodating cavity 113, and the appearance of the externally hung ladder 100 is more attractive and consistent.

In one embodiment, referring to FIG. 3, the extension ladder 100 further includes reinforcement ribs 130. The reinforcing ribs 130 are coupled between the walls of the accommodating chamber 113 and the second connecting portion 112, so that the structural strength of the second connecting portion 112 is enhanced by the reinforcing ribs 130, and the stable coupling of the footrest assembly 120 to the frame body 110 is ensured.

Further, the reinforcing ribs 130 are disposed between two adjacent second connecting portions 112, and also enhance the structural strength of the second connecting portions 112, thereby ensuring stable installation of the footrest assembly 120.

In one embodiment, referring to fig. 4 and 5, the footrest assembly 120 includes a footrest frame 123 and a flexible cover 124 wrapped around the footrest frame 123. The first connection part 121 is provided on the pedal frame 123. The footrest portion 122 is disposed on the flexible cover 124. Thus, the pedal frame 123 enhances the structural strength of the pedal assembly 120, so that the pedal assembly 120 is stably coupled to the frame body 110. Meanwhile, the soft sleeve 124 is wrapped on the pedal framework 123, so that the flexibility of the pedal assembly 120 is increased, and the comfort level of a user in the pedaling process is improved. In addition, pedal portion 122 is installed on frame main part 110 through pedal skeleton 123, cancels the glue bonding, effectively avoids pedal portion 122 to take place excessive glue and be difficult to control appearance quality in the fixed process.

The method of wrapping the soft cover 124 around the pedal frame 123 is various, and this embodiment is not particularly limited. Such as: the injection molding process is performed on the pedal framework 123, the soft sleeve 124 is wound on the pedal framework 123, the soft sleeve 124 is sleeved on the pedal framework 123, and the like.

Alternatively, the pedal frame 123 may be made of wood, plastic, metal, or the like. Meanwhile, the soft cover 124 is made of rubber.

Further, referring to fig. 5 and 8, the anti-slip strips 1221 are disposed on the soft sleeve 124, so that the anti-slip strips 1221 increase the friction force on the soft sleeve 124, so that the user can step on the ladder more stably, which is beneficial to improving the safety of the external ladder 100.

In one embodiment, referring to fig. 4, the pedal frame 123 includes a first frame 1231, a second frame 1232, and a first bearing member 1233 and a second bearing member 1234 spaced between the first frame 1231 and the second frame 1232. The first support 1231, the first carrier 1233, the second support 1232, and the second carrier 1234 enclose a frame structure.

Specifically, referring to fig. 4, the first support 1231, the first carrier 1233, the second support 1232, and the second carrier 1234 are integrated, and the joints among the first support 1231, the first carrier 1233, the second support 1232, and the second carrier 1234 are rounded.

In an embodiment, referring to fig. 5 and fig. 6, a first fastening portion 1235 is disposed on the pedal frame 123, a second fastening portion 1241 that is fastened to the first fastening portion 1235 is disposed in the soft sleeve 124, and the soft sleeve 124 is stably wrapped on the pedal frame 123 by the first fastening portion 1235 being engaged with the second fastening portion 1241.

Optionally, the first fastening portion 1235 is a groove structure, and the second fastening portion 1241 is a protrusion structure; alternatively, the first fastening portion 1235 is a protrusion structure, and the second fastening portion 1241 is a groove structure.

In one embodiment, referring to fig. 2, the frame body 110 includes a first housing 115 and a second housing 116 that are engaged with each other. The mounting groove 111 is disposed through the first housing 115 and the second housing 116, and the first housing 115 and/or the second housing 116 are provided with a second connecting portion 112. Therefore, the frame body of the present embodiment is divided into a front portion and a rear portion, and during the assembly process, the first housing 115 and the second housing 116 are separated; then, the pedal assembly 120 is installed in the installation groove 111 of the first shell 115, and the first connection portion 121 is connected to the second connection portion 112; then, the second housing 116 is correspondingly fitted over the first housing 115, thereby completing the assembly of the extension ladder 100.

Optionally, the first housing 115 and the second housing 116 are detachably engaged, such as clamped, bolted, and pinned.

It should be noted that the second connecting portion 112 provided on the first casing 115 and/or the second casing 116 should be understood as follows: the second connection portion 112 is provided on the first housing 115; alternatively, the second connection portion 112 is provided on the second housing 116; further alternatively, the first housing 115 and the second housing 116 are both provided with the second connecting portion 112. When the first housing 115 and the second housing 116 are both provided with the second connecting portion 112, after the first housing 115 is matched with the second housing 116, the second connecting portion 112 on the first housing 115 is in interference fit with the second connecting portion 112 on the second housing 116.

Specifically, referring to fig. 2, the first shell 115 and the second shell 116 are both provided with a second connecting portion 112, the second connecting portion 112 is provided with a slot 1121, when the first shell 115 is matched with the second shell 116, the slot 1121 on one of the second connecting portions 112 is matched with the slot 1121 on the other second connecting portion 112, so that the pedal assembly 120 is stably clamped on the frame body 110.

In one embodiment, referring to fig. 8, the width W of the foot rest portion 122 gradually increases from the end portion of the foot rest portion 122 to the middle portion of the foot rest portion 122, such that the width of the middle portion of the foot rest portion 122 is greater than the width of the end portion, which is beneficial to increase the stepping range of the foot rest portion 122 and ensure that the user is more comfortable when getting on or off the ladder.

It should be noted that the step portion 122 should be understood as a partial region on the surface of the soft cover 124; alternatively, a portion of the surface of the footrest assembly 120.

In one embodiment, referring to fig. 2, the number of the installation slots 111 and the number of the step assemblies 120 are two or more, the two or more installation slots 111 are spaced apart along the height direction of the frame body 110, and the step assemblies 120 are disposed in one-to-one correspondence to the installation slots 111, such that the extension ladder 100 has a plurality of step levels.

In one embodiment, referring to fig. 1 and 2, a sleeper includes a sleeper body and an externally-mounted ladder 100 of any of the above embodiments, and a frame main body 110 is mounted on the sleeper body.

The sleeping berth adopts the externally-hung ladder 100, takes the frame main body 110 as a supporting main body, is arranged on the sleeping berth body and provides enough supporting force for a user to climb; then, a mounting groove 111 is formed on the frame body 110, and a pedal assembly 120 is mounted in the mounting groove 111 to form a stepping level; finally, the first connecting part 121 is connected with the second connecting part 112, so that the footrest assembly 120 is stably connected to the frame body 110, thereby completing the assembly of the externally-hung ladder 100, thus reducing the assembly difficulty and greatly improving the assembly efficiency of the externally-hung ladder 100. Because the pedal assembly 120 and the frame body 110 are two independent structures, and the first connecting portion 121 and the second connecting portion 112 are detachably connected, when the pedal portion is broken or worn, the pedal portion on the pedal assembly 120 can be independently maintained only by disconnecting the first connecting portion 121 and the second connecting portion 112, so that the later maintenance work of the externally-hung ladder 100 is facilitated. Meanwhile, the pedal assembly 120 of the present embodiment is located in the mounting groove 111, so as to effectively prevent the treading part from protruding out of the external hanging ladder 100, so that the external hanging ladder 100 is consistent in structure in the overall appearance, and the appearance effect of the external hanging ladder 100 is greatly improved.

Further, referring to fig. 8, the frame main body 110 is provided with a vertical column 140, the vertical column 140 is provided with a first mounting hole 141, and the sleeper body is provided with a second mounting hole opposite to the first mounting hole 141, so that the vertical column 140 and the sleeper body are stably connected by inserting the fixing member into the first mounting hole 141 and the second mounting hole, respectively. The fixing piece can be a bolt, a screw, a pin, a rivet or other fixing parts.

In one embodiment, referring to fig. 7, the sleeping berth body includes a first berth and a second berth spaced from each other at an upper portion and a lower portion, the frame body 110 is provided with a bayonet 117, the frame body 110 is connected to the first berth, and the bayonet 117 is clamped into a bed edge of the second berth, so that the externally-hung ladder 100 is tightly combined with the sleeping berth body, which is beneficial to reducing the occupied space of the externally-hung ladder 100.

Further, referring to fig. 7, a third mounting hole 1171 is formed on an inner wall of the bayonet 117, and a fourth mounting hole opposite to the third mounting hole 1171 is formed on the second bunk.

In one embodiment, please refer to fig. 1 and 2, a car body includes a car body and the above sleeping berths, and the sleeping berth body is installed in the car body.

The carriage adopts the externally-hung ladder 100, and the frame main body 110 is used as a support main body and is arranged on the sleeper body to provide enough support force for a user to climb; then, a mounting groove 111 is formed on the frame body 110, and a pedal assembly 120 is mounted in the mounting groove 111 to form a stepping level; finally, the first connecting part 121 is connected with the second connecting part 112, so that the footrest assembly 120 is stably connected to the frame body 110, thereby completing the assembly of the externally-hung ladder 100, thus reducing the assembly difficulty and greatly improving the assembly efficiency of the externally-hung ladder 100. Because the pedal assembly 120 and the frame body 110 are two independent structures, and the first connecting portion 121 and the second connecting portion 112 are detachably connected, when the pedal portion is broken or worn, the pedal portion on the pedal assembly 120 can be independently maintained only by disconnecting the first connecting portion 121 and the second connecting portion 112, so that the later maintenance work of the externally-hung ladder 100 is facilitated. Meanwhile, the pedal assembly 120 of the present embodiment is located in the mounting groove 111, so as to effectively prevent the treading part from protruding out of the external hanging ladder 100, so that the external hanging ladder 100 is consistent in structure in the overall appearance, and the appearance effect of the external hanging ladder 100 is greatly improved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An externally hung ladder, comprising:

the frame comprises a frame main body, wherein a mounting groove is formed in the frame main body; and

the pedal assembly is of a frame structure, a pedal part is arranged on the pedal assembly, the pedal assembly is integrally positioned in the mounting groove so as to prevent the pedal part from protruding out of the externally-hung ladder, the periphery of the frame structure is matched with a notch of the mounting groove, a first connecting part is arranged on the pedal assembly, and a second connecting part detachably connected with the first connecting part is arranged on the frame main body;

the frame main part includes first casing and the second casing of mutually supporting, the second casing cooperation is in on the first casing, the mounting groove runs through first casing with the second casing sets up, just first casing with all be equipped with on the second casing second connecting portion, be equipped with the draw-in groove on the second connecting portion, first casing with when the second casing cooperation, draw-in groove on one of them second connecting portion and the draw-in groove on another second connecting portion are to each other to make pedal subassembly joint in the frame main part.

2. The externally-hung ladder as claimed in claim 1, wherein the frame body is provided therein with a receiving cavity communicating with the mounting groove, the second connecting portion is provided on the wall of the receiving cavity, and the first connecting portion can extend into the receiving cavity from the mounting groove and is detachably connected to the second connecting portion.

3. The externally-hung ladder according to claim 2, wherein the first connecting portion comprises a clamping block and a protrusion arranged on the clamping block, the second connecting portion is provided with a clamping groove, the clamping block is clamped in the clamping groove, and the protrusion abuts against a side surface of the second connecting portion, which faces away from the pedal assembly.

4. The hanging ladder as claimed in claim 1, wherein the first connecting portions are two or more, the two or more first connecting portions are spaced apart from each other at a side of the footrest assembly, and the second connecting portions are disposed along a circumferential direction of the mounting groove.

5. The hanging ladder as claimed in claim 2, wherein the wall of the accommodating cavity is provided with a mounting spigot, the mounting spigot is arranged along the circumferential direction of the mounting groove, and the pedal assembly is clamped into the mounting spigot.

6. The hanging ladder of claim 2, further comprising a stiffener connected between the wall of the containment chamber and the second connection.

7. An externally-hung ladder according to any one of claims 1 to 6, wherein the pedal assembly comprises a pedal framework and a flexible sleeve wrapped outside the pedal framework, the first connecting portion is arranged on the pedal framework, and the pedal portion is arranged on the flexible sleeve.

8. The extension ladder of claim 7 wherein said foot pedal framework includes a first support frame, a second support frame, and a first load bearing member and a second load bearing member spaced apart from and connected between said first support frame and said second support frame, said first load bearing member, said second support frame, and said second load bearing member defining a frame structure.

9. An extension ladder according to any one of claims 1 to 6, wherein the width W of said foot rest portions increases from the ends of the foot rest portions to the middle of the foot rest portions.

10. A sleeper comprising a sleeper body and an externally-hanging ladder as defined in any one of claims 1 to 9, wherein said frame body is mounted on said sleeper body.

11. A carriage comprising a carriage body and the sleeper of claim 10, the sleeper body being mounted within the carriage body.