Scissor aerial platform guardrail

Abstract

The application discloses a scissor-type aerial work platform guardrail in the technical field of scissor-type aerial work platform accessories, which comprises a main platform, a sub-platform, a guardrail, a guardrail frame, a limiting plate and a limiting handle, the guardrail frame is installed on the main platform and the sub-platform, the guardrail is connected with the guardrail frame through a detachable structure, one end of the sub-platform is provided with a positioning device, the positioning device is matched with the height difference of the main platform bottom plate, and a track higher than the main platform bottom plate is arranged to guide the stable movement of the sub-platform, the sub-platform is provided with a locking device for locking the sub-platform when the guardrail is in a folded state, the limiting plate is arranged on the guardrail of the main platform, a plurality of grooves are arranged on the limiting plate, and the limiting handle is arranged on the guardrail of the sub-platform. The scissor-type aerial work platform guardrail provided by the application improves the space utilization, operation convenience and safety of the platform, and provides a more stable, reliable and efficient working platform for high-altitude operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of scissors-type aerial work platform accessories, and particularly relates to a scissors-type aerial work platform platform fence. BACKGROUND

[0002] The scissors-type aerial work platform is widely applied to high-altitude work scenes such as building construction and equipment maintenance, and its basic structure comprises a main platform, a sub-platform, a fence and a scissors-type lifting arm. In order to meet different work requirements, the sub-platform is usually designed as a telescopic structure, and the stability and locking effect of the sub-platform often directly affect the work safety and operation convenience of the platform during use. However, in the existing design, the telescoping of the sub-platform is easily affected by the sundries on the bottom plate or the track jamming, resulting in unsmooth operation, and even the situation of deviation may occur. In addition, in the switching between the work and transportation of the platform, the folding and fixing of the fence are also key problems to be solved. The existing fence folding structure design is usually complex and cumbersome to operate, and it is difficult to balance safety and operation convenience, and at the same time, the sub-platform after the folding of the fence is easy to slide accidentally due to the lack of effective locking structure, and there is a safety hazard. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at overcoming the defects in the prior art, and provides a scissors-type aerial work platform platform fence, which improves the space utilization, operation convenience and safety of the platform, and provides a more stable, reliable and efficient work platform for high-altitude work.

[0004] In order to achieve the above-mentioned purpose, the utility model is implemented by adopting the following technical scheme:

[0005] The utility model provides a scissors-type aerial work platform platform fence, which comprises a main platform, a sub-platform, a fence, a fence frame, a limiting plate and a limiting handle, wherein:

[0006] The fence frame is installed on the main platform and the sub-platform; the fence is connected with the fence frame through a detachable structure, and the detachable structure can fix the fence in an unfolded state;

[0007] One end of the sub-platform is provided with a positioning device, the positioning device is matched with the height difference of the main platform bottom plate, and a track higher than the main platform bottom plate is arranged to guide the stable movement of the sub-platform; a locking device is arranged on the sub-platform and used for locking the sub-platform when the fence is in a folded state;

[0008] The limiting plate is arranged on the fence of the main platform, and a plurality of grooves are arranged on the limiting plate; the limiting handle is arranged on the fence of the sub-platform, and the limiting handle is movably connected with the fence of the sub-platform; the limiting handle is clamped into the groove on the limiting plate through rotation, and the sub-platform is locked at different positions in the unfolded state of the fence.

[0009] Further, the bottom of the guardrail is connected with the guardrail frame through a rotating connection structure, the rotating connection structure forms a rotation center of the guardrail, and the guardrail can be folded from an unfolded state to a state parallel to the platform around the rotation center.

[0010] Further, the auxiliary platform is connected with the main platform through a sliding mechanism, the sliding mechanism comprises a sliding wheel connected to the main platform and a sliding groove opened on the auxiliary platform, and the sliding wheel is matched with the sliding groove.

[0011] Further, the positioning device comprises a roller mounted on the auxiliary platform and a rolling track arranged higher than the bottom plate of the main platform.

[0012] Further, the roller is mounted on one end of the auxiliary platform through a roller mounting plate, a bearing is pressed into the roller, a head pin shaft passes through the bearing, a shaft sleeve and the roller mounting plate in sequence, a limiting pin cooperates with the head pin shaft to fix the position of the roller, and finally the roller and the roller mounting plate are fixed on the auxiliary platform through bolts.

[0013] Further, a gasket for adjusting the axial position of the roller is arranged between the limiting pin and the roller mounting plate.

[0014] Further, the locking device is a reset type spring indexing pin arranged on the roller mounting plate, the reset type spring indexing pin is in a raised position when the auxiliary platform is unfolded for use, and when the auxiliary platform is completely retracted, the reset type spring indexing pin falls down and locks the auxiliary platform.

[0015] Further, the detachable structure comprises a bolt and a limiting hole, the bolt passes through the guardrail and cooperates with the limiting hole on the guardrail frame to realize the connection of the guardrail and the guardrail frame; the rotating connection structure comprises a mounting hole on the bottom of the guardrail and the guardrail frame, the mounting hole is below the limiting hole on the guardrail frame to form the rotation center of the guardrail, a connecting member is inserted into the mounting hole, and the guardrail can rotate around the connecting member to the folded state.

[0016] Further, the connecting member is a bolt, the bolt passes through the mounting hole on the bottom of the guardrail and the guardrail frame and is fixed through a nut; when the guardrail is switched from the unfolded state to the folded state, after removing the bolt, the guardrail can rotate around the rotating connection structure to the position parallel to the platform.

[0017] Further, the limiting handle comprises a main rod and an auxiliary rod, the auxiliary rod is in an L-shaped structure, the main rod and the auxiliary rod are fixedly connected at one end thereof, short rods are arranged on the main rod and the auxiliary rod, and mounting holes are opened on the two short rods.

[0018] Two inverted U-shaped structures are fixed on the guardrail of the secondary platform. The inverted U-shaped structures have mounting holes. The short rod is placed in the U-shaped groove of the inverted U-shaped structure. The bolt passes through the mounting holes of the inverted U-shaped structure and the short rod and is fixedly connected by a nut. The limiting handle can rotate around the bolt so that the short rod part of the limiting handle is engaged in the groove of the limiting plate, thereby locking the secondary platform. The working length of the secondary platform can be adjusted by lifting the limiting handle and pushing or pulling it to extend or retract the platform.

[0019] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0020] 1. The auxiliary platform is equipped with a positioning device. This device guides the smooth movement of the auxiliary platform by setting a track higher than the main platform's base plate, preventing contact between the auxiliary platform and debris on the main platform's base plate during extension and retraction. This effectively prevents operational difficulties caused by jamming during extension and retraction, ensuring smoother and more reliable operation. This invention provides a stable locking structure for the auxiliary platform in different guardrail states. In the folded state, the auxiliary platform is locked by a locking device; in the unfolded state, the auxiliary platform is locked by a combination of a limit handle and a limit plate, ensuring stability during operation. This design fully considers the equipment's usage needs in different states, further improving safety and ease of operation.

[0021] 2. The limiting design of the secondary platform adopts a combination structure of limiting plate and limiting handle. Multiple grooves on the limiting plate allow the secondary platform to be extended and retracted in multiple stages according to actual needs. The limiting handle is locked stably by gravity into the groove, which reduces the complexity of operation and improves safety. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the sub-platform locking structure provided in Embodiment 1 of this utility model;

[0023] Figure 2 This is a schematic diagram of the guardrail in a folded state according to Embodiment 1 of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the limiting handle provided in Embodiment 2 of this utility model;

[0025] Figure 4 This is a schematic diagram of the connection structure between the main platform and the sub-platform provided in Embodiment 2 of this utility model;

[0026] Figure 5 This is a schematic diagram of the mounting structure of the auxiliary platform roller and the reset spring indexing pin provided in Embodiment 2 of this utility model;

[0027] Figure 6This is a schematic diagram of the guardrail installation structure provided in Embodiment 2 of this utility model.

[0028] The meanings of the labels in the figures are as follows:

[0029] 1. Limiting plate; 2. Limiting handle; 21. Main rod; 22. Secondary rod; 23. Short rod; 3. Guardrail; 31. Main platform guardrail; 32. Secondary platform guardrail; 4. Sliding wheel; 5. Sliding groove; 6. Roller; 7. Rolling track; 8. Roller mounting plate; 9. Bearing; 10. Lead pin; 11. Bushing; 12. Limiting pin; 13. Reset spring indexing pin; 14. Guardrail frame; 15. Pin; 16. Rotation center. Detailed Implementation

[0030] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments and specific features in the embodiments are detailed descriptions of the technical solution of this application, rather than limitations on the technical solution of this application. Unless otherwise specified, the embodiments and technical features in the embodiments can be combined with each other.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Example 1

[0034] This embodiment provides a scissor lift platform railing, including a main platform, a secondary platform, a guardrail 3, a guardrail frame 14, a limit plate 1, and a limit handle 2.

[0035] like Figure 2As shown, guardrail frames 14 are installed on the main platform and the auxiliary platform respectively, for providing support for the guardrails 3. Common installation methods include welding, bolting, riveting, and using quick connection devices, etc. Depending on different requirements and installation environments, the guardrail frames 14 can be firmly connected with the main platform and the auxiliary platform through these methods. For example, welding method can provide high-strength fixation, suitable for scenarios with high stability requirements; bolting is convenient for disassembly, suitable for occasions requiring regular maintenance; riveting is suitable for applications requiring vibration resistance; quick connection devices can provide a convenient disassembly method, suitable for the needs of quick replacement and adjustment. The guardrails 3 are connected with the guardrail frames 14 through detachable structures, which can fix the guardrails 3 in the unfolded state, ensuring that the guardrails 3 can be stably arranged around the main platform and the auxiliary platform during operation.

[0036] One end of the auxiliary platform is provided with a positioning device, which cooperates with the height difference of the main platform bottom plate and is provided with a track higher than the main platform bottom plate to guide the stable movement of the auxiliary platform. This design prevents the auxiliary platform from being stuck by debris or obstructed by the track during extension and retraction, ensuring the stable operation of the auxiliary platform. In addition, the auxiliary platform is also provided with a locking device for locking the auxiliary platform when the guardrails are in the folded state, preventing accidental sliding of the auxiliary platform during transportation or storage.

[0037] As shown, Figure 1 A limiting plate 1 is provided on the guardrail 31 of the main platform, and a plurality of grooves are formed in the limiting plate 1. These grooves are arranged along the side rail direction of the main platform guardrail 31, providing multiple lockable positions for the extension and retraction of the auxiliary platform. A limiting handle 2 is provided on the guardrail 32 of the auxiliary platform, and the limiting handle 2 is movably connected with the auxiliary platform guardrail 32. When the auxiliary platform is extended or retracted to the target position along the main platform direction, the limiting handle 2 is rotated and locked into the groove on the limiting plate 1, achieving the locking of the auxiliary platform.

[0038] The detachable structure of the scissor-type aerial platform guardrail of the utility model can detach the guardrail in the non-operation state, saving storage and transportation space, and facilitating the handling and management of the equipment. The positioning device of the auxiliary platform and the track higher than the main platform bottom plate ensure the stable movement of the auxiliary platform during extension and retraction, avoiding the sticking phenomenon and improving the use efficiency and safety of the equipment. In addition, the locking device of the auxiliary platform cooperates with the limiting handle and the limiting plate to achieve multi-level locking, ensuring that the auxiliary platform can be stably positioned at different positions, reducing the operation complexity and enhancing the safety. During the locking process of the auxiliary platform, the locking device plays an important role when the guardrails are in the folded state, preventing accidental movement of the auxiliary platform during transportation and storage. In summary, the utility model improves the stability, reliability and use convenience of the equipment through reasonable design, meets different operation requirements, and improves the work efficiency of high-altitude operation.

[0039] Example 2

[0040] In order to further optimize the locking structure of the sub-platform and the connecting mode of the guardrails, the embodiment makes detailed improvements to the limiting handle, the detachable structure of the guardrails, and the positioning device of the sub-platform on the basis of the first embodiment.

[0041] Specifically, as shown in Figure 6 , the bottom of the guardrail 3 is connected with the guardrail frame 14 through a rotating connection structure, and the rotating connection structure forms the rotation center 16 of the guardrail 3. When it is necessary to fold the guardrail 3, the guardrail 3 can rotate around the rotation center 16 of the rotating connection structure from the unfolded state to a position parallel to the main platform or the sub-platform. After the guardrail 3 is folded, the space occupied by the guardrail 3 is significantly reduced, which makes the aerial work platform more convenient to transport or store, and avoids additional obstacles caused by the interference of the guardrail 3.

[0042] The main platform is slidably connected with the sub-platform through a sliding mechanism. As shown in Figure 4 , the sliding mechanism adopted in the embodiment includes a sliding wheel 4 connected to the main platform and a sliding groove 5 opened on the sub-platform, and the sliding wheel 4 is matched with the sliding groove 5. The sliding grooves 5 opened on both sides of the sub-platform are used to guide the sliding direction of the sub-platform, and the sliding wheel 4 can slide along the sliding groove 5 under the driving of the sub-platform. The sliding mechanism that the sliding wheel 4 is matched with the sliding groove 5 converts the sliding friction into rolling friction, and the sliding resistance is relatively small and the sliding noise is small, and the setting of the sliding groove 5 can reduce the phenomenon that the sub-platform is stuck due to the sliding inclination with the main platform.

[0043] In the embodiment, as shown in Figure 4 , the positioning device includes a roller 6 installed on the sub-platform and a rolling track 7 arranged higher than the bottom plate of the main platform, the roller 6 is installed on the sub-platform through a roller mounting plate 8, a bearing 9 is pressed into the roller, a head pin shaft 10 passes through the bearing 9, a shaft sleeve 11 and the roller mounting plate 8 in sequence, a limiting pin 12 cooperates with the head pin shaft 10 to fix the position of the roller, and finally the roller 6 and the roller mounting plate 8 are fixed on the sub-platform through bolts. As shown in Figure 5 , the roller mounting plate 8 is fixed on one end of the sub-platform through bolts, the bearing 9 is first pressed into the roller 6, the head pin shaft 10 passes through the bearing 9 and the shaft sleeve 11, then the whole assembly composed of the head pin shaft 10, the roller 6, the bearing 9 and the shaft sleeve 11 passes through the roller mounting plate 8 fixed on the sub-platform, the limiting pin 12 is inserted into the limiting hole of the head pin shaft 10 and the shaft sleeve 11, and finally the bolts are screwed to complete the fixed installation of the roller 6.

[0044] The spacer 12 and the roller mounting plate 8 are provided with spacers for adjusting the axial position of the roller. By increasing the spacers to adjust the position of the sub-platform roller, the gap between the sub-platform and the main platform can be changed, ensuring that the sliding wheels 4 on both sides of the sub-platform can move smoothly in the sliding groove 5, thereby optimizing the extension effect of the sub-platform.

[0045] The roller 6 avoids direct contact with the debris on the main platform bottom plate during sliding, thereby effectively preventing jamming or movement obstruction caused by debris. In addition, the exclusive track rolling and the spacer design for adjusting the axial position of the roller 6 further improve the anti-jamming capability and rolling precision of the sub-platform roller system, providing reliable protection for the extension operation of the sub-platform.

[0046] The guardrail 3 needs to be folded during transportation, and when the guardrail 3 is in a folded state, the sub-platform cannot be locked by the cooperation of the limiting handle 2 on the sub-platform guardrail 32 and the limiting plate 1 groove on the main platform guardrail 31. In order to avoid the accidental extension of the sub-platform after the guardrail 3 is folded during transportation, the embodiment of the utility model installs a reset type spring indexing pin 13 on the roller mounting plate 8 for locking the sub-platform in the folded state of the guardrail 3. The reset type spring indexing pin is in a raised position when the sub-platform is unfolded for use; when the sub-platform is completely retracted, the reset type spring indexing pin falls down, thereby fixing the sub-platform in the folded state of the guardrail 3 and avoiding accidental movement of the sub-platform due to vibration or operation error during transportation.

[0047] As an embodiment of the utility model, the guardrail 3 and the guardrail frame 14 are connected through a detachable structure, which includes a bolt 15 and a limiting hole. As shown in Figure 6 The bolt 15 passes through the limiting hole on the guardrail 3 and the guardrail frame 14 to fix the guardrail 3 in an unfolded state. The bottom of the guardrail 3 is connected with the guardrail frame 14 through a rotating connection structure, which includes a mounting hole and a limiting hole located below the guardrail frame 14. The mounting hole and the limiting hole together form a rotation center 16 of the guardrail 3, and the guardrail 3 can rotate around the rotation center 16 to a folded state.

[0048] Specifically, the connecting member in the rotating connection structure is a bolt, which passes through the mounting hole on the bottom of the guardrail 3 and the guardrail frame 14 and is fixed by a nut. To achieve the folding of the guardrail 3, the bolt 15 on the guardrail frame 14 needs to be removed first, which can release the fixation of the guardrail 3. Next, the guardrail 3 rotates around the rotation center 16 and finally folds into a state parallel to the platform, thereby saving space and facilitating transportation and storage.

[0049] Through this structural design, the installation and disassembly of the guardrail 3 become more convenient and flexible. When the guardrail 3 needs to be folded, the pin 15 is simply removed, the fixing of the guardrail 3 to the guardrail frame 14 is released, and folding is achieved through rotation without the need for complex tools or operations. This structure not only ensures the stability of the guardrail 3 in the unfolded state, but also saves a lot of space when folded, facilitating transportation and storage. In addition, the design of the rotating connection can avoid wear and tear caused by frequent disassembly and installation, prolong the service life, and make the folding of the guardrail 3 more stable and the operation more safe and convenient.

[0050] As an embodiment of the present application, as shown in Figure 3 The limiting handle 2 includes a main rod 21 and a secondary rod 22, wherein the secondary rod 22 is in an L-shaped structure, the main rod 21 is fixedly connected with the secondary rod 22 at one end, and a short rod 23 is arranged on each of the main rod 21 and the secondary rod 22, and two mounting holes are respectively arranged in the two short rods 23. Two inverted U-shaped structures are fixedly arranged on the secondary platform guardrail 3, mounting holes are arranged in the U-shaped slots of the inverted U-shaped structures, the short rods 23 are arranged in the U-shaped slots, bolts pass through the mounting holes of the inverted U-shaped structures and the short rods 23, and are fixedly connected through nuts. Through this connection mode, the limiting handle 2 can rotate around the bolts as the axis.

[0051] When the secondary platform moves along the rolling track 7 under the action of the rollers 6 and reaches the target position, the limiting handle 2 swings downward through the rotating structure, and the short rod 23 part of the limiting handle 2 is accurately clamped into the recess of the limiting plate 1 on the main platform guardrail 31, so as to realize the locking of the secondary platform. After being clamped into the recess, the center of gravity of the limiting handle 2 is always located on the inner side of the rotating center 16, so as to ensure the stability of the locking state and prevent loosening. In addition, a plurality of recesses are arranged on the limiting plate 1 along the length direction of the side rail of the main platform, and the secondary platform can realize multi-stage locking by clamping the limiting handle 2 into different recesses, so as to meet the demand of different extension lengths.

[0052] When the secondary platform needs to be adjusted in length, the limiting handle 2 is simply lifted to be separated from the current recess, the secondary platform is pushed or pulled to a new position, and then the limiting handle 2 is moved to a new target recess and released, so as to complete the relocking, and the operation process is simple and efficient.

[0053] Through the design of the limiting structure, the extension and locking operation of the auxiliary platform is more stable and reliable. The gravity of the limiting handle 2 makes it automatically clamped into the groove of the limiting plate 1, which saves an additional operation step and ensures the safety in the locked state. The design of the inverted U-shaped structure and the bolt connection form not only provides a stable rotating fulcrum for the limiting handle 2, but also further improves the positioning accuracy through the cooperation of the short rod 23 and the groove. The arrangement of the multi-stage groove makes the extension length adjustment of the auxiliary platform more flexible, which adapts to various operation requirements. In addition, the cooperation design between the limiting handle 2 and the limiting plate 1 avoids accidental loosening caused by vibration or external force, and significantly improves the durability and operation safety of the overall structure.

[0054] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and deformations can be made, which should be considered as the protection scope of the present application.

Claims

1. A scissors aerial platform guardrail, characterized in that, The fence includes a main platform, a sub-platform, a fence, a fence frame, a limiting plate and a limiting handle, wherein: The fence frame is installed on the main platform and the sub-platform; the fence is connected with the fence frame through a detachable structure, and the detachable structure can fix the fence in an unfolded state; One end of the sub-platform is provided with a positioning device, the positioning device is matched with the height difference of the main platform bottom plate, and a track higher than the main platform bottom plate is arranged to guide the stable movement of the sub-platform; the sub-platform is provided with a locking device for locking the sub-platform when the fence is in a folded state; The limiting plate is provided on the fence of the main platform, and a plurality of grooves are arranged on the limiting plate; the limiting handle is movably connected with the fence of the sub-platform, and the limiting handle is locked in the grooves of the limiting plate by rotating, so that the sub-platform is locked at different positions in the unfolded state of the fence.

2. The scissors-type aerial work platform fence according to claim 1, wherein The bottom of the fence is connected with the fence frame through a rotating connection structure, the rotating connection structure forms the rotation center of the fence, and the fence can be folded from the unfolded state to the state parallel to the platform around the rotation center.

3. The scissors-type aerial work platform fence according to claim 1, wherein The sub-platform is slidably connected with the main platform through a sliding mechanism, the sliding mechanism includes a sliding wheel connected to the main platform and a sliding groove opened on the sub-platform, and the sliding wheel is matched with the sliding groove.

4. The scissors-type aerial work platform fence according to claim 1, wherein The positioning device includes a roller installed on the sub-platform and a rolling track higher than the main platform bottom plate.

5. The scissors-type aerial work platform fence according to claim 4, wherein The roller is installed at one end of the sub-platform through a roller mounting plate, a bearing is pressed into the roller, a head pin shaft passes through the bearing, a shaft sleeve and the roller mounting plate in sequence, a limiting pin cooperates with the head pin shaft to fix the position of the roller, and finally the roller and the roller mounting plate are fixed to the sub-platform through bolts.

6. The scissors-type aerial work platform fence according to claim 5, wherein A gasket for adjusting the axial position of the roller is arranged between the limiting pin and the roller mounting plate.

7. The scissors-type aerial work platform fence according to claim 5, wherein The locking device is a reset type spring indexing pin arranged on the roller mounting plate, the reset type spring indexing pin is in a raised position when the sub-platform is unfolded; when the sub-platform is completely retracted, the reset type spring indexing pin falls down and locks the sub-platform.

8. The scissors-type aerial work platform fence according to claim 2, wherein The detachable structure includes a bolt and a limiting hole, the bolt passes through the fence and cooperates with the limiting hole on the fence frame to realize the connection of the fence and the fence frame; the rotating connection structure includes an installation hole on the bottom of the fence and the fence frame, the installation hole is below the limiting hole on the fence frame to form the rotation center of the fence, a connecting member is inserted into the installation hole, and the fence can rotate around the connecting member to the folded state.

9. The scissors-type aerial work platform fence according to claim 8, wherein The connecting member is a bolt, the bolt passes through the mounting hole on the guardrail frame and the bottom of the guardrail, and is fixed by a nut; when the guardrail is switched from the unfolded state to the folded state, after the bolt is removed, the guardrail can be rotated to a position parallel to the platform around the rotating connection structure.

10. The scissors aerial platform guardrail according to claim 1, characterized in that, The limiting handle comprises a main rod and a sub-rod, the sub-rod is in L-shaped structure, the main rod is fixedly connected with the sub-rod at one end, and short rods are arranged on the main rod and the sub-rod; installation holes are formed in the two short rods; Two inverted U-shaped structures are fixedly arranged on the sub-platform guardrail, installation holes are formed in the inverted U-shaped structures, the short rods are arranged in the U-shaped slots of the inverted U-shaped structures, a bolt passes through the installation holes of the inverted U-shaped structures and the short rods, and is fixedly connected by a nut; the limiting handle can rotate around the bolt, so that the short rod part of the limiting handle is clamped into the groove of the limiting plate, thereby achieving locking of the sub-platform; the sub-platform is stretched and retracted by lifting and pushing and pulling the limiting handle, thereby adjusting the working length of the sub-platform.

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