Foldable guardrail

Abstract

The foldable guardrail comprises a fixed supporting unit, a movable handrail unit and a locking assembly, the fixed supporting unit is located on a mounting platform and fixedly connected with the mounting platform, the movable handrail unit is rotationally connected with the fixed supporting unit, and the movable handrail unit comprises a movable handrail; and the locking assembly is connected with the movable handrail. Due to the fact that the locking assembly comprises the inserting cylinder, and the inserting cylinder is inserted in the mounting platform in a pluggable mode, under the condition that the inserting cylinder is pulled out of the pre-embedded sleeve, the movable handrail unit is opened by rotating and folding the movable handrail unit relative to the fixed supporting unit, and the opening convenience of the movable handrail unit is improved. The number of the movable handrails is multiple, every two adjacent movable handrails are rotationally connected, the rotating number of the movable handrails can be adjusted according to the opening width requirement of the movable handrail unit, the compatibility of the foldable guardrail for different opening width requirements is improved, and the applicability of the foldable guardrail is improved.

Description

Technical Field

[0001] The present application belongs to the field of safety protection technology, and specifically relates to a foldable guardrail. Background Art

[0002] Guardrails are an important safety protection facility in construction projects. According to the "Technical Standards for Building Guardrails" JGJ / T470-2019, they are defined as: railings that provide safety protection for the human body and prevent the human body from passing, also known as guardrails.

[0003] Guardrails can be divided into two categories. One is a fixed guardrail that serves a protective function, provides safety protection for the human body, and is an immovable (or open) railing that prevents the human body from passing through. The other type has the same function as a fixed guardrail, but can be disassembled and opened. This type of guardrail is a movable guardrail.

[0004] In the related art, movable guardrails are difficult to open and have a limited opening area, and have low safety performance during use. Summary of the invention

[0005] In order to solve the technical problems in the related art that movable guardrails are difficult to open and have limited opening area, and have low safety performance during use, the present application provides a foldable guardrail. The foldable guardrail includes:

[0006] A fixed support unit, located on the mounting platform and fixedly connected to the mounting platform;

[0007] A movable railing unit is rotatably connected to the fixed support unit, wherein the movable railing unit comprises a plurality of movable railings, and two adjacent movable railings are rotatably connected;

[0008] A locking assembly is connected to the movable railing, and the locking assembly includes an insert sleeve, and the insert sleeve is pluggable and inserted on the mounting platform.

[0009] In some embodiments, the movable railing is provided with a guide track extending in a vertical direction, and the locking assembly further comprises:

[0010] A locking buckle is connected to the inserting tube, and the locking buckle is movably arranged in the guide track and can be locked in the guide track.

[0011] In some embodiments, the movable railing is provided with a hollow railing post, and the guide track is opened on the side wall of the railing post and communicates with the inner space of the railing post;

[0012] Alternatively, the movable railing is equipped with a railing post, and the locking assembly also includes a guide cylinder and a support plate provided with the guide track, the support plate and the insert cylinder are respectively located on the outside of the railing post and are respectively fixedly connected to the railing post, and the insert cylinder is movably inserted in the guide cylinder.

[0013] In some embodiments, the locking buckle further comprises:

[0014] A pin connected to the inserting tube, wherein the pin is movably arranged in the guide track;

[0015] A nut, threadedly connected to the pin;

[0016] Wherein, when the insert is located in the hollow railing post, the nut is located on the outside of the railing post, and the side wall of the railing post is clamped between the nut and the insert; or, the guide track is opened on the support plate, and the support plate is clamped between the nut and the insert.

[0017] In some embodiments, when the guide track is opened on the side wall of the railing post, the guide track passes through the railing post in a direction perpendicular to the vertical direction, the pin is inserted into the guide track, and both ends of the pin are respectively located on the outside of the guide track and are respectively threadedly connected with the nut.

[0018] In some embodiments, the guide rail is configured with a vertical section and one or more transverse sections, the transverse section is connected to the vertical section, the transverse section has a slot downward in the vertical direction, and the pin can pass through the vertical section and slide into the slot of the transverse section.

[0019] In some embodiments, the locking buckle further comprises:

[0020] A connecting rod, one end of which is connected to the insert cylinder, and the other end of which is movably connected to the pin.

[0021] In some embodiments, a gasket is connected to the bottom of the railing post, the gasket is detachably connected to the railing post and is provided with an insertion and extraction hole for the insertion tube to pass through.

[0022] In some embodiments, the fixed support unit is divided into two groups arranged at intervals, the movable railing unit is divided into two groups and are respectively rotatably connected to the fixed support units, and the sides of the two groups of movable railing units away from the fixed support units are respectively connected to the first door leaf and the second door leaf, and the first door leaf and the second door leaf are detachably connected.

[0023] In some embodiments, the fixed support unit includes a fixed railing, the fixed railing is fixedly connected to the mounting platform, and the movable railing unit is rotatably connected to the fixed railing.

[0024] According to the foldable guardrail provided by one or more embodiments of the present application, the foldable guardrail includes a fixed support unit, a movable railing unit and a locking assembly, the fixed support unit is located on the mounting platform and fixedly connected to the mounting platform, the movable railing unit is rotatably connected to the fixed support unit, the movable railing unit includes a movable railing, and the locking assembly is connected to the movable railing. Since the locking assembly includes an insert cylinder, and the insert cylinder is pluggably inserted on the mounting platform, when the insert cylinder is pulled out of the embedded sleeve, the movable railing unit is opened by rotating and folding the movable railing unit relative to the fixed support unit, thereby improving the convenience of opening the movable railing unit. The movable railing is provided with a plurality of adjacent movable railings that are rotatably connected, and the number of rotations of the movable railing can be adjusted according to the opening width requirements of the movable railing unit, thereby improving the compatibility of the foldable guardrail with different opening width requirements and improving the applicability of the foldable guardrail. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of a foldable guardrail in one or more embodiments of the present application;

[0026] Figure 2 A schematic diagram of the structure of the foldable guardrail in one or more embodiments of the present application in an open and closed state;

[0027] Figure 3 It is a schematic diagram of the structure of the handrail post, the locking assembly, the gasket and the mounting platform (the insert is located in the embedded sleeve) in one or more embodiments of the present application;

[0028] Figure 4 for Figure 3 The enlarged schematic diagram of point A in the middle;

[0029] Figure 5 for Figure 3 The enlarged schematic diagram of point B in the middle;

[0030] Figure 6 for Figure 3 Sectional view at CC;

[0031] Figure 7 It is a schematic diagram of the structure of the coordination of the railing post, the locking assembly, the gasket and the installation platform (the insert sleeve is separated from the embedded sleeve) in one or more embodiments of the present application;

[0032] Figure 8 for Figure 7 Enlarged schematic diagram of point D in the middle.

[0033] Description of reference numerals:

[0034] 11. Fix the railing;

[0035] 21. movable railing; 211. guide track; 212. vertical section; 213. horizontal section; 214. railing post; 22. first door leaf; 23. second door leaf;

[0036] 30. Locking assembly; 31. Insertion sleeve; 32. Locking buckle; 321. Pin; 322. Nut; 323. Connecting rod;

[0037] 40. Gasket;

[0038] 50. Installation platform; 51. Embedded sleeve;

[0039] 60. Door bolt. DETAILED DESCRIPTION

[0040] In order to make the technical personnel in the technical field to which the present application belongs to understand the present application more clearly, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0041] Guardrails are an important safety protection facility in construction projects. According to the Technical Standard for Building Guardrails JGJ / T470-2019, they are defined as: guardrails that provide safety protection for the human body and prevent the human body from passing through, also known as guardrails. From the definition, it can be seen that guardrails (referred to as guardrails) must have two basic functions: one is the safety protection function, that is, to ensure that they are not damaged when a specified external force is applied or when they are hit by an external force of a specified intensity, to prevent the fall of people or objects; the other is to prevent the human body from passing through, that is, to isolate dangerous areas, guide the flow of people, and provide visual warnings.

[0042] Commonly used guardrails can be divided into two categories. One is a fixed guardrail that serves a protective function. It is an immovable (or open) railing that provides safety protection for the human body and prevents the human body from passing through. The other type has the same function as the fixed guardrail, but is movable (or disassembled and opened). This type of guardrail is a movable guardrail.

[0043] In the related art, fixed guardrails are immovable and do not have an opening function, and movable guardrails are difficult to open and have a limited opening area, and have low safety performance during use. Therefore, in petrochemical projects, due to the characteristics of production buildings and structures, conventional fixed guardrails and movable guardrails have limitations in manufacturing and use, affecting production efficiency and user experience.

[0044] In order to solve the technical problems of the difficulty in opening the movable guardrail in the related art, the limited opening surface, and the low safety performance during use, the present application provides a foldable guardrail. Figure 1 to Figure 2 The foldable guardrail includes a fixed support unit (including a fixed railing 11), a movable railing unit (not shown in the figure) and a locking assembly 30. The fixed support unit is located on the mounting platform 50 and is fixedly connected to the mounting platform 50. The movable railing unit is rotatably connected to the fixed support unit. The movable railing unit includes a movable railing 21. The locking assembly 30 is connected to the movable railing 21. Figure 3 The locking assembly 30 includes an insert 31, which is pluggable and inserted into a pre-embedded sleeve 51 on the mounting platform 50. When the insert 31 is pulled out of the pre-embedded sleeve 51, the movable railing 21 is rotated and folded relative to the fixed support unit to open the movable railing 21, thereby improving the convenience of opening the movable railing unit. There are multiple movable railings 21, and two adjacent movable railings 21 are rotatably connected. The number of rotations of the movable railing 21 can be adjusted according to the opening width requirements of the movable railing unit, thereby improving the compatibility of the foldable guardrail with different opening width requirements and improving the applicability of the foldable guardrail.

[0045] It should be noted that the installation platform 50 can be a concrete platform, a steel structure platform, etc., and the connection method between the embedded sleeve 51 and the installation platform 50 can be: when the installation platform 50 is a concrete platform, the embedded sleeve 51 can be embedded in the concrete. When the installation platform 50 is a steel structure platform, the embedded sleeve 51 can be welded to the steel structure (or steel beam). The form of the installation platform 50 in this application is not limited, and the connection method between the embedded sleeve 51 and the installation platform 50 can be set according to actual conditions.

[0046] The fixed support unit includes a fixed railing 11, which is fixedly connected to the mounting platform 50, and the movable railing unit is rotatably connected to the fixed railing. Specifically, the column of the fixed railing 11 can be directly inserted into the embedded sleeve 51 to achieve a fixed connection between the fixed railing 11 and the mounting platform 50. In some embodiments, the column of the fixed railing 11 can also be embedded in concrete or welded to a steel structure to achieve a fixed connection between the fixed railing 11 and the mounting platform 50. It can be set according to actual conditions and is not limited in this application.

[0047] See also Figures 3 to 8 The movable rail 21 is provided with a guide track 211 extending in the vertical direction. The locking assembly 30 further includes a locking buckle 32. Since the locking buckle 32 is movably arranged in the guide track 211 and can be locked in the guide track 211, and the locking buckle 32 is connected to the inserting tube 31, the stroke of the inserting tube 31 can be adjusted. In this way, when the movable rail 21 is rotated and folded to a desired position relative to the fixed support unit (see Figure 2 , Figure 2The middle dotted line represents the process of the movable railing 21 being rotated and folded to a desired position), so that the inserting tube 31 abuts against the mounting platform 50 to support the movable railing 21, which can improve the stability of the movable railing unit.

[0048] The movable railing unit is equipped with a hollow railing column 214, and the guide track 211 is opened on the side wall of the railing column 214 and is connected to the internal space of the railing column 214. The insert tube 31 can be located in the internal space of the railing column 214, and the internal space of the railing column 214 can limit the moving direction of the insert tube 31. The locking buckle 32 is inserted into the guide track 211, and the locking buckle 32 is detachably connected to the guide track 211 to achieve the fixation of the position of the insert tube 31.

[0049] In some embodiments, the insert tube 31 may also be located outside the railing post 214, and the locking buckle 32 is inserted into the guide track 211 from the outside. The locking buckle 32 is detachably connected to the guide track 211 to fix the position of the insert tube 31.

[0050] Specifically, see Figures 3 to 8 The locking buckle 32 includes a pin 321 and a nut 322. The pin 321 is connected to the insert sleeve 31. The pin 321 can be movably inserted in the guide rail 211 and can be locked in the guide rail 211. The nut 322 is threadedly connected to the pin 321. The insert sleeve 31 is located in the hollow railing post 214. The nut 322 is located on the outside of the railing post 214. The side wall of the railing post 214 is clamped between the nut 322 and the insert sleeve 31.

[0051] The guide rail 211 is provided with a vertical section 212 and one or more transverse sections 213. The transverse sections 213 are connected to the upper part of the vertical section 212. When the pin 321 moves in the vertical section 212, the side wall of the railing column 214 is stably clamped between the nut 322 and the insert 31 by the locking nut 322, so that the position of the insert 31 can be fixed. When the insert 31 needs to be moved, the pin 321 is moved to a set position in the vertical section 212 by loosening the nut 322. Furthermore, the locking nut 322 fixes the position of the insert 31. In the vertical section 212 of the guide rail 211, by adjusting the position of the insert 31, the insert 31 is abutted against the mounting platform 50 to support the movable railing 21, so that the stability of the movable railing unit can be improved.

[0052] See also Figures 3 to 5, the transverse section 213 is provided with a slot downwardly in the vertical direction, and the pin 321 can pass through the vertical section 212 and slide into the slot of the transverse section 213. When the movable railing 21 needs to be rotated and folded, the pin 321 can be directly hooked into the slot of the corresponding transverse section 213 according to the height to which the inserting tube 31 needs to be lifted, so that the inserting tube 31 is separated from the mounting platform 50, which is convenient for the position movement of the movable railing 21. The pin 321 can also be directly hooked into the slot of the transverse section 213 connected to the top of the vertical section 212, and then it can be determined that the inserting tube 31 is separated from the mounting platform 50. At the same time, in order to prevent the movable railing 21 from falling when the inserting tube 31 moves, affecting the position movement of the movable railing 21, when the pin 321 can be hooked into the slot, the nut 322 can also be locked to fix the position of the inserting tube 31.

[0053] When the movable guardrail 21 is in the closed state, please refer to Figures 6 to 8 The fixed inner insert 31 is in a state of being inserted into the embedded sleeve 51, and the fastening nut 322 on the pin 321 of the connecting rod 323 is in a tightened state to prevent the fixed inner insert 31 from being accidentally lifted.

[0054] That is to say, the movable railing 21 is in the opening process (see Figures 3 to 6 ), the pin 321 is lifted into the slot of the transverse section 213, so that the insert 31 is lifted from the embedded sleeve 51, and the movable railing 21 is rotated toward the production area to open and fold, thereby improving the safety of the movable railing 21 during opening and closing. When the movable railing 21 is rotated and folded to a desired position relative to the fixed railing 11, the insert 31 is in contact with the mounting platform 50 and the nut 322 is in a locked state, supporting the movable railing 21 while preventing the insert 31 from moving up, thereby improving the stability of the movable railing unit.

[0055] The movable railing 21 is in the process of closing (see Figures 7 and 8 ), the pin 321 is lifted into the slot of the horizontal section 213, so that the insert 31 is disengaged from the installation platform 50, and the movable railing 21 is rotated in sequence to close it until the railing column 214 corresponds to the embedded sleeve 51, and the pin 321 is moved to the vertical section 212 of the guide track 211 until the insert 31 falls into the embedded sleeve 51, and the locking nut 322 is used to prevent the insert 31 from moving up, which can improve the stability of the fixed position of the movable railing unit.

[0056] In order to improve the stability of the position of the insert 31, please refer to Figure 6When the guide track 211 is opened on the side wall of the railing column 214, the guide track 211 penetrates the railing column 214 in a direction perpendicular to the vertical direction, and the pin 321 is inserted into the guide track 211. The two ends of the pin 321 are respectively located outside the guide track 211 and are respectively threaded with nuts 322. The nuts 322 at both ends can limit the position of the pin 321 and can also improve the stability of the fastening of the position of the insert 31.

[0057] In some embodiments, the movable railing unit is provided with a railing column 214, and the locking assembly 30 is further provided with a support plate (not shown in the figure) and a guide cylinder (not shown in the figure) provided with a guide track 211. The support plate and the insert cylinder 31 are respectively located on the outside of the railing column 214, the support plate and the guide cylinder are respectively fixedly connected to the railing column 214 and the guide cylinder is located below the support plate, the guide track 211 is provided on the support plate, and the support plate is clamped between the nut 322 and the insert cylinder 31. Since the insert cylinder 31 is movably installed in the guide cylinder, when the movable railing 21 is in the opening process, the pin 321 is lifted into the card slot of the transverse section 213 of the guide track 211, so that the insert cylinder 31 is lifted from the embedded sleeve 51, and the movable railing 21 is rotated toward the production area in turn to open and fold. When the movable railing 21 is rotated and folded to a desired position relative to the fixed support unit, the inserting tube 31 is in contact with the mounting platform 50 and the nut 322 is in a locked state, supporting the movable railing 21 while preventing the inserting tube 31 from moving upward, thereby improving the stability of the movable railing unit. When the movable railing 21 is in a closed state, the pin 321 is located in the vertical section 212 of the guide track 211, and the inserting tube 31 is located in the guide tube and the embedded sleeve 51 in sequence, so that the position of the movable railing 21 is fixed and the movable railing 21 is closed.

[0058] In petrochemical projects, foldable guardrails are usually set up in places near the air. During the opening process, the operator can rotate the first door leaf 22, the second door leaf 23 and the movable railing unit (including the movable railing 21) toward the production area to improve the operational safety of the opening and closing process of the movable railing 21, thereby improving the safety of the operator's operations near the air.

[0059] When the movable railing 21 is in the closing process, the pin 321 is lifted into the slot of the horizontal section 213 to disengage the insert sleeve 31 from the mounting platform 50, and the movable railing 21 is rotated and closed in sequence until the railing column 214 corresponds to the embedded sleeve 51, and the pin 321 is moved into the vertical section 212 of the guide rail 211 until the insert sleeve 31 falls into the embedded sleeve 51, and the locking nut 322 is used to prevent the insert sleeve 31 from moving up, thereby improving the stability of the fixed position of the movable railing unit.

[0060] The movable railing 21 is rotatably connected to the fixed railing 11 by hinges, so that the movable railing 21 can be rotatably folded, which improves the convenience of opening and closing the movable railing 21 during use. Multiple combination hinges can be arranged between the movable railing 21 and the fixed railing 11 in the vertical direction, and the multiple combination hinges can be arranged at the diagonal positions of the movable railing 21 and the fixed railing 11 respectively (see Figure 1 and Figure 2 ), which is used to connect the movable railing 21 and the fixed railing 11, and can also improve the stability of the rotational connection between the movable railing 21 and the fixed railing 11.

[0061] It should be noted that the fixed railing 11 and the movable railing 21 can be prefabricated in a standardized manner, so as to achieve standardization and unitization of the fixed railing 11 and the movable railing 21, improve the applicability and practicality of the foldable guardrail, and thus ensure the production efficiency and production quality of the foldable guardrail. The rotation connection between the fixed railing 11 and the movable railing 21 can be set according to actual needs, and this application does not limit it.

[0062] In some embodiments, the fixed support unit may also be a steel column and a wall. When the fixed support unit is a steel column, hinges may be welded on the steel column, and the movable railing 21 may be rotatably connected to the steel column through the hinges. When the fixed support unit is a wall, embedded parts may be pre-embedded on the wall of the concrete structure, hinges may be welded to the pre-embedded parts, and the movable railing 21 may be rotatably connected to the steel column through the hinges. This application does not limit the form and structure of the fixed support unit, and it may be set according to actual conditions.

[0063] The fixed railing 11 provides support for the movable railing 21, including ensuring the stability of the movable railing 21 during the rotation and folding process of the movable railing 21 and the process of being fixedly connected to the mounting platform 50. The fixed support unit may include a plurality of fixed railings 11, and the plurality of fixed railings 11 are divided into two groups arranged at intervals. Each group of fixed railings 11 includes at least one fixed railing 11, and the two fixed railings 11 are arranged at intervals to limit the maximum opening width of the movable railing 21.

[0064] In some embodiments, a plurality of fixed railings 11 may be provided to provide stable support for the movable railing unit, thereby improving the overall stability of the foldable guardrail.

[0065] The movable guardrail unit includes a plurality of movable guardrails 21, see Figure 1 to Figure 2 The plurality of movable railings 21 are divided into two groups and each group of movable railings 21 is rotatably connected to the fixed railings 11. The first door leaf 22 and the second door leaf 23 are respectively connected to the sides of the two groups of movable railing units away from the fixed support unit. The first door leaf 22 and the second door leaf 23 are detachably connected through a bolt 60, which improves the convenience of connecting and disconnecting the first door leaf 22 and the second door leaf 23.

[0066] In some embodiments, the first door leaf 22 and the second door leaf 23 may also be detachably connected in other ways, which is not limited in this application and may be set according to actual needs.

[0067] The opening width defined by the first door leaf 22 and the second door leaf 23 can be set as a daily passage, and is rotatably connected to the movable railing 21 through hinges, thereby improving the convenience of opening and closing the daily passage. During the opening process, the first door leaf 22 and the second door leaf 23 rotate toward the production area to open the daily passage, thereby improving the safety performance during the opening and closing process of the first door leaf 22 and the second door leaf 23. When it is necessary to expand the opening width, the first door leaf 22, the second door leaf 23 and a set number of movable railings 21 can be rotated at the same time. The number of rotations required for the movable railing 21 can be determined according to the opening width, so that the foldable guardrail can have the functions of daily passage and temporary opening width, thereby improving the applicability and practicality of the foldable guardrail.

[0068] It should be noted that the movable railing 21 can be rotated relative to the fixed railing 11 (or the adjacent movable railing 21) to open a daily passage to meet daily passage needs. At this time, there is no need to set the first door leaf 22 and the second door leaf 23.

[0069] In some embodiments, one fixed railing 11 may be provided, and a movable railing 21 may be provided as a group. The fixed railing 11 provides support for one side of the movable railing 21. By rotating and folding the movable railing 21, the movable railing 21 in the foldable guardrail can be opened and closed on one side.

[0070] The foldable guardrail includes a fixed railing 11 fixedly connected to the mounting platform 50, a movable railing 21 rotatably connected to the mounting platform 50, a first door leaf 22, and a second door leaf 23. While ensuring the stability of the foldable guardrail, it also has the functions of daily traffic and temporary opening width to adapt to different scenarios, such as the location of the wall opening of the building in the construction stage with walls on both sides, and the connection with the nearest building wall by the number of fixed support units, etc., to improve the applicability of the foldable guardrail. The foldable guardrail can also be applied to similar buildings (structures) of other industrial construction projects, and can be set according to actual needs, which is not limited in this application.

[0071] The locking buckle 32 further includes a connecting rod 323, one end of which is connected to the inserting tube 31, and the other end of which is movably connected to the pin 321. The connecting rod 323 is used in conjunction with the pin 321 to adjust the lifting state of the inserting tube 31. At the same time, since the guide track 211 is formed by opening a hole on the railing column 214 of the movable railing unit, the strength of the railing column 214 will be weakened. The guide track 211 can be moved upward by the connecting rod 323 to avoid the root of the railing column 214 that is subjected to greater force, thereby ensuring the strength of the railing column 214.

[0072] In order to facilitate the active connection between the pin 321 and the connecting rod 323, a socket is provided at the top of the connecting rod 323, and the pin 321 is movably inserted into the socket. The top of the connecting rod 323 can be bent to form a socket, or a socket can be provided at the top of the connecting rod 323, which can be set according to actual needs and is not limited in this application.

[0073] The bottom of the movable railing unit is also connected to a gasket 40, which is detachably connected to the railing post 214 and is provided with a plug-in hole for the insertion tube 31 to pass through. When the movable railing 21 is in the open state, the gasket 40 can make a certain gap between the railing post 214 and the ground, ensuring that the movable railing 21 does not contact the ground when it moves; when the movable railing 21 is in a stable position, the gap between the railing post 214 and the ground is filled to ensure the stability of the movable railing 21, thereby ensuring the overall stability of the foldable guardrail.

[0074] In the present application, the working principle of the foldable guardrail is as follows: when opening the foldable guardrail, the bolt 60 is moved to disengage the first door leaf 22 from the second door leaf 23, and the first door leaf 22 and the second door leaf 23 are rotated to open the daily passage through the hinges between the first door leaf 22 and the movable railing unit and between the second door leaf 23 and the movable railing unit, so as to open the daily passage. When the opening width needs to be expanded, the bolt 321 can be lifted to pull the insert 31 out of the embedded sleeve 51 of the installation platform 50, and the movable railing 21 is folded and opened through the hinges between adjacent movable railings 21 or between the movable railing 21 and the fixed railing 11, so as to expand the opening width of the movable railing 21. The first door leaf 22, the second door leaf 23 and the movable railing 21 are conveniently rotated through the hinges, thereby improving the convenience of the opening and closing process of the first door leaf 22, the second door leaf 23 and the movable railing 21.

[0075] The foldable guardrail in the present application solves the technical problems in the related art that the movable guardrail is difficult to open and has a limited opening surface, and has low safety performance during use. It realizes standardized prefabrication and modular assembly, improves the efficiency of the design stage of the foldable guardrail, as well as the construction efficiency and quality during the construction process, and ensures safety and comfort during use.

[0076] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0077] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0078] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0079] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0080] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A foldable guardrail, characterized in that: The foldable guardrail comprises: A fixed support unit, located on the mounting platform and fixedly connected to the mounting platform; A movable railing unit is rotatably connected to the fixed support unit, wherein the movable railing unit comprises a plurality of movable railings, and two adjacent movable railings are rotatably connected; A locking assembly is connected to the movable railing, and the locking assembly includes an insert sleeve, and the insert sleeve is pluggable and inserted on the mounting platform.

2. The foldable guardrail according to claim 1, characterized in that: The movable railing is provided with a guide track extending in a vertical direction, and the locking assembly further comprises: A locking buckle is connected to the inserting tube, and the locking buckle is movably arranged in the guide track and can be locked in the guide track.

3. The foldable guardrail according to claim 2, characterized in that: The movable railing is provided with a hollow railing post, and the guide track is opened on the side wall of the railing post and communicates with the inner space of the railing post; Alternatively, the movable railing is equipped with a railing post, and the locking assembly also includes a guide cylinder and a support plate provided with the guide track, the support plate and the insert cylinder are respectively located on the outside of the railing post and are respectively fixedly connected to the railing post, and the insert cylinder is movably inserted in the guide cylinder.

4. The foldable guardrail according to claim 3, characterized in that: The locking buckle also includes: A pin connected to the inserting tube, wherein the pin is movably arranged in the guide track; A nut, threadedly connected to the pin; Wherein, when the insert is located in the hollow railing post, the nut is located on the outside of the railing post, and the side wall of the railing post is clamped between the nut and the insert; or, the guide track is opened on the support plate, and the support plate is clamped between the nut and the insert.

5. The foldable guardrail according to claim 4, characterized in that: When the guide track is opened on the side wall of the railing post, the guide track passes through the railing post in a direction perpendicular to the vertical direction, the pin is inserted into the guide track, and both ends of the pin are respectively located outside the guide track and are respectively threadedly connected with the nut.

6. The foldable guardrail according to claim 4, characterized in that: The guide track is configured with a vertical section and one or more transverse sections, the transverse section is connected to the vertical section, the transverse section is provided with a slot downward in the vertical direction, and the pin can pass through the vertical section and slide into the slot of the transverse section.

7. The foldable guardrail according to any one of claims 4 to 6, characterized in that: The locking buckle also includes: A connecting rod, one end of which is connected to the insert cylinder, and the other end of which is movably connected to the pin.

8. The foldable guardrail according to any one of claims 3 to 6, characterized in that: A gasket is connected to the bottom of the railing post. The gasket is detachably connected to the railing post and is provided with a plug-in and pull-out hole for the insertion tube to pass through.

9. The foldable guardrail according to claim 1, characterized in that: The fixed support unit is divided into two groups arranged at intervals, the movable railing unit is divided into two groups and is rotatably connected to the fixed support unit respectively, and the first door leaf and the second door leaf are respectively connected to one side of the two groups of movable railing units away from the fixed support unit, and the first door leaf and the second door leaf are detachably connected.

10. The foldable guardrail according to claim 9, characterized in that: The fixed support unit comprises a fixed railing, the fixed railing is fixedly connected to the mounting platform, and the movable railing unit is rotatably connected to the fixed railing.

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