Pedal device for aerial work platform and aerial work platform

Abstract

The invention relates to the technical field of aerial work, and discloses a pedal device for an aerial work platform and the aerial work platform. The first-stage guardrail assembly is rotationally connected with one longitudinal end of the pedal, and the first-stage guardrail assembly has a first unfolded state and a first folded state; the second-stage guardrail assembly is vertically and movably arranged on the first-stage guardrail assembly and has a second unfolded state and a second folded state; and the third-stage guardrail assembly is rotatably arranged on the second-stage guardrail assembly and has a third unfolded state and a third folded state, and in the third unfolded state, the third-stage guardrail assembly is perpendicular to the second-stage guardrail assembly, and the third-stage guardrail assembly and the second-stage guardrail assembly jointly form an annular protection area above the pedal. The pedal device for the aerial work platform is simple in structure, can be quickly folded and stored, and can also have a good protection effect on operators when the pedal device is unfolded.

Description

Technical Field

[0001] This application belongs to the field of high-altitude work technology, specifically relating to a footboard device for a high-altitude work platform and a high-altitude work platform. Background Technology

[0002] Aerial work platforms are widely used in construction and civil engineering, such as for tunnel roof and side construction, cleaning of exterior windows of high-rise buildings, and erection of overhead power lines. With the development of science and technology, aerial work platforms have become ubiquitous in all aspects of social production and life. Aerial work platforms can lift workers to heights of tens of meters for work. When encountering narrow areas for high-altitude work, the platform needs to raise a separate platform step to assist workers in completing the task. However, existing platform steps are often fastened to the platform with bolts or clamps, making it impossible to fold and store them quickly, and the extended platform step does not provide adequate protection for workers. Summary of the Invention

[0003] The purpose of this application is to provide a footboard device for an aerial work platform and an aerial work platform. The footboard device for the aerial work platform has a simple structure, can be quickly folded and stored, and can provide good protection for the workers when the footboard device is unfolded.

[0004] To achieve the above objectives, a first aspect of this application provides a footboard device for an aerial work platform, the footboard device comprising: pedal; The primary guardrail assembly is rotatably connected to one longitudinal end of the pedal. The primary guardrail assembly has a first unfolded state and a first folded state. In the first unfolded state, the primary guardrail assembly is distributed vertically. In the first folded state, the primary guardrail assembly is parallel to the pedal and fits together. The secondary guardrail assembly is vertically movable and is mounted on the primary guardrail assembly, and has a second unfolded state and a second folded state. In the second unfolded state, the secondary guardrail assembly extends upward along the length direction of the primary guardrail assembly; in the second folded state, the secondary guardrail assembly overlaps the primary guardrail assembly vertically. The third-level guardrail assembly is rotatably mounted on the second-level guardrail assembly and has a third unfolded state and a third folded state. In the third unfolded state, the third-level guardrail assembly is perpendicular to the second-level guardrail assembly and together with the second-level guardrail assembly above the pedal to form a ring-shaped protective area. In the third folded state, the third-level guardrail assembly is parallel to the second-level guardrail assembly and fits together.

[0005] In the embodiments of this application, the pedal includes a pedal portion and a first mounting bracket portion and a second mounting bracket portion respectively disposed at the lateral ends of the pedal portion. Both the first mounting bracket portion and the second mounting bracket portion are located at one longitudinal end of the pedal portion and each forms a connecting rod mounting groove. The connecting rod mounting groove has a first opening facing and communicating with the stepping space on the pedal portion. The primary guardrail assembly includes: The first connecting rod, a portion of the first connecting rod extends into the connecting rod mounting groove of the first mounting bracket and is rotatably connected to the first mounting bracket; The second connecting rod, part of the second connecting rod extends into the connecting rod mounting groove of the second mounting bracket and is rotatably connected to the second mounting bracket; The third connecting rod has its two ends connected to the first connecting rod and the second connecting rod, respectively. The first locking element is used to lock or unlock the first connecting rod and the first mounting bracket. The second locking element is used to lock or unlock the second connecting rod and the second mounting bracket.

[0006] In embodiments of this application, the primary guardrail assembly further includes a first mounting rod and a second mounting rod. The first mounting rod is disposed on the lateral outer wall of the first connecting rod and distributed parallel to the first connecting rod. The second mounting rod is disposed on the lateral outer wall of the second connecting rod and distributed parallel to the second connecting rod. The secondary guardrail assembly includes: The fourth connecting rod is axially movable and inserted inside the first mounting rod; The fifth connecting rod is axially movable and inserted inside the second mounting rod; The sixth connecting rod connects to the fourth connecting rod and the fifth connecting rod at its two ends, respectively. The third locking element is used to lock or unlock the first mounting rod and the fourth connecting rod; The fourth locking element is used to lock or unlock the second mounting rod and the fifth connecting rod.

[0007] In embodiments of this application, the secondary guardrail assembly further includes: The first limiting plate is located at the end of the fourth connecting rod away from the sixth connecting rod. The first limiting plate is used to prevent the fourth connecting rod from coming out of the first mounting rod when it moves in the direction protruding from the first-level guardrail assembly. The second limiting plate is located at the end of the fifth connecting rod away from the sixth connecting rod. The second limiting plate is used to prevent the fifth connecting rod from coming out of the second mounting rod when it moves in the direction protruding from the first-level guardrail assembly.

[0008] In an embodiment of this application, a receiving groove for accommodating a sixth connecting rod is formed on the third connecting rod.

[0009] In embodiments of this application, the secondary guardrail assembly further includes a first connecting frame and a second connecting frame. The first connecting frame is disposed at the end of the fourth connecting rod away from the first mounting frame and perpendicular to the fourth connecting rod. A first connecting groove with an opening facing away from the fourth connecting rod is formed on the first connecting frame. The second connecting frame is disposed at the end of the fifth connecting rod away from the second mounting frame and perpendicular to the fifth connecting rod. A second connecting groove with an opening facing away from the fifth connecting rod is formed on the second connecting frame. The tertiary guardrail assembly includes: The seventh connecting rod is bent. One end of the seventh connecting rod extends into the first connecting groove and is rotatably connected to the first connecting frame. The other end of the seventh connecting rod extends into the second connecting groove and is rotatably connected to the second connecting frame. The seventh connecting rod and the sixth connecting rod work together to form an annular protective area. The bottom wall of the first connecting groove and the bottom wall of the second connecting groove are both formed with flip-over notches for the seventh connecting rod to flip to one side of the secondary guardrail assembly. The fifth locking element is used to lock or unlock the seventh connecting rod and the first connecting frame; The sixth locking element is used to lock or unlock the seventh connecting rod and the second connecting frame.

[0010] In embodiments of this application, the pedal device further includes a foot pedal module disposed at the bottom of the pedal and rotatably connected to the pedal, the foot pedal module being used to provide a foot support surface for assisting in stepping onto the pedal.

[0011] In embodiments of this application, the pedal device further includes a second locking module disposed on the foot pedal module and the pedal and used to lock or unlock the foot pedal module.

[0012] In embodiments of this application, the second locking module includes: A locking mounting base is located at the bottom of the pedal and forms an installation space; The locking pin is laterally movable and inserted into the locking mounting base and passes through the installation space; The limiting pin is inserted radially into the locking pin and located in the installation space; The elastic element is sleeved on the outer periphery of the locking pin and its two ends abut against the side wall of the limiting pin and the mounting space, respectively. The foot pedal module has a socket for inserting part of the locking pin.

[0013] In embodiments of this application, the pedal device further includes: The mounting bracket module includes a first mounting bracket and a second mounting bracket respectively disposed on the bottom lateral sides of the pedal. The first mounting bracket has a first locking groove for the first lateral railing of the aerial work platform to be inserted into. The first locking groove is longitudinally continuous and has a downward-facing second opening. The second mounting bracket has a second locking groove for the second lateral railing of the aerial work platform to be inserted into. The second locking groove is longitudinally continuous and has a downward-facing third opening. The first locking module includes a first locking mechanism and a second locking mechanism movably disposed on the pedal and located on the lateral sides of the pedal respectively. The first locking mechanism is used to vertically lock the first lateral railing in the first locking groove, and the second locking mechanism is used to vertically lock the second lateral railing in the second locking groove.

[0014] A second aspect of this application provides an aerial work platform, which includes the aforementioned footboard device for an aerial work platform.

[0015] As can be seen from the above technical solution, the pedal device includes a pedal, a primary guardrail assembly, a secondary guardrail assembly, and a tertiary guardrail assembly. The primary guardrail assembly is rotatably connected to one longitudinal end of the pedal. The primary guardrail assembly has a first unfolded state and a first folded state. In the first unfolded state, the primary guardrail assembly is vertically distributed. In the first folded state, the primary guardrail assembly is parallel to and attached to the pedal. The secondary guardrail assembly is vertically movable and is mounted on the primary guardrail assembly, having a second unfolded state and a second folded state. In the second unfolded state, the secondary guardrail assembly extends upward along the length of the primary guardrail assembly. In the second folded state, the secondary guardrail assembly overlaps with the primary guardrail assembly vertically. The tertiary guardrail assembly is rotatably mounted on the secondary guardrail assembly, having a third unfolded state and a third folded state. In the third unfolded state, the tertiary guardrail assembly is perpendicular to the secondary guardrail assembly and forms a ring-shaped protective area above the pedal together with the secondary guardrail assembly. In the third folded state, the tertiary guardrail assembly is parallel to and attached to the secondary guardrail assembly. The pedal device includes a primary guardrail assembly, a secondary guardrail assembly, and a tertiary guardrail assembly, all of which can be switched between states. Operators can quickly operate these components according to actual needs, allowing the pedal device to function in multiple ways. For example, when all three components are folded, the pedal device occupies minimal space, facilitating storage and transportation. When all three components are unfolded, they effectively protect the operator standing on the pedal, enhancing safety.

[0016] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 This is a schematic diagram of the first state of the pedal device in an embodiment of this application; Figure 2 This is a schematic diagram of the second state of the pedal device in an embodiment of this application; Figure 3 This is a schematic diagram of the third state of the pedal device in an embodiment of this application; Figure 4 This is a schematic diagram of the fourth state of the pedal device in an embodiment of this application; Figure 5 This is a schematic diagram of the fifth state of the pedal device in an embodiment of this application; Figure 6 This is a schematic diagram of the installation of the second locking module in an embodiment of this application; Figure 7 This is a schematic diagram of the structure of the second locking module in an embodiment of this application; Figure 8 This is a schematic diagram of the installation of the pedal device on the aerial work platform in the embodiments of this application; Figure 9 This is a schematic diagram of the pedal structure in an embodiment of this application; Figure 10 This is a schematic diagram of the mounting bracket module in an embodiment of this application; Figure 11 This is a schematic diagram of the installation of the first flexible pad in an embodiment of this application; Figure 12 This is a schematic diagram of the structure of the first locking mechanism or the second locking mechanism in the embodiments of this application.

[0018] Explanation of reference numerals in the attached figures 1-Pedal; 101-Pedal section; 102-First mounting bracket section; 103-Second mounting bracket section; 104-First mounting hole; 105-Second mounting hole; 106-First mounting seat section; 107-Second mounting seat section; 108-Linkage mounting slot; 2-Mounting bracket module; 201-First mounting bracket; 202-Second mounting bracket; 203-First snap-fit ​​slot; 204-Second snap-fit ​​slot; 3-First horizontal railing; 4-Second horizontal railing; 5-First locking module; 501-First Locking mechanism; 502-Second locking mechanism; 503-Bending bracket; 5031-First horizontal section; 5032-Second horizontal section; 5033-Vertical connecting section; 504-Locking rod; 5041-Connecting rod part; 5042-Handle part; 5043-First circular ear plate body; 5044-Second circular ear plate body; 5045-Handle body; 505-Fastener; 6-First flexible pad; 7-First-level guardrail assembly; 701-First connecting rod; 702-Second connecting rod; 703-Third Connecting rod; 704-First locking element; 705-Second locking element; 706-First mounting rod; 707-Second mounting rod; 708-Receiving slot; 8-Secondary guardrail assembly; 801-Fourth connecting rod; 802-Fifth connecting rod; 803-Sixth connecting rod; 804-Third locking element; 805-Fourth locking element; 806-First connecting frame; 807-Second connecting frame; 808-First connecting groove; 809-Second connecting groove; 9-Third-level guardrail assembly; 901-Seventh connecting rod; 9 02-Fifth locking element; 903-Sixth locking element; 904-First connecting section; 905-Second connecting section; 906-Third connecting section; 907-Annular protective area; 10-Foot pedal module; 1001-Eighth connecting rod; 1002-Ninth connecting rod; 1003-Tenth connecting rod; 11-Second locking module; 1101-Locking mounting base; 1102-Locking pin; 1103-Limit pin; 1104-Elastic element; 1105-First cylindrical part; 1106-Second cylindrical part. Detailed Implementation

[0019] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0020] Embodiments of this application provide a footboard device for aerial work platforms, such as... Figures 1-6 As shown, the pedal device includes: Pedal 1; The primary guardrail assembly 7 is rotatably connected to one longitudinal end of the pedal 1. The primary guardrail assembly 7 has a first unfolded state and a first folded state. In the first unfolded state, the primary guardrail assembly 7 is distributed vertically. In the first folded state, the primary guardrail assembly 7 is parallel to the pedal 1 and fits together. The secondary guardrail assembly 8 is vertically movable and is mounted on the primary guardrail assembly 7, and has a second unfolded state and a second folded state. In the second unfolded state, the secondary guardrail assembly 8 extends upward along the length direction of the primary guardrail assembly 7; in the second folded state, the secondary guardrail assembly 8 and the primary guardrail assembly 7 overlap vertically. The third-level guardrail assembly 9 is rotatably mounted on the second-level guardrail assembly 8 and has a third unfolded state and a third folded state. In the third unfolded state, the third-level guardrail assembly 9 is perpendicular to the second-level guardrail assembly 8 and forms a ring-shaped protective area 907 with the second-level guardrail assembly 8 above the pedal 1. In the third folded state, the third-level guardrail assembly 9 is parallel to the second-level guardrail assembly 8 and fits together.

[0021] Specifically, the primary guardrail assembly 7 is rotatably mounted on one longitudinal end of the pedal 1. Applying force to the primary guardrail assembly 7 to make it rotate will switch its state. For example, to change the first folded state to the first unfolded state, the primary guardrail assembly 7 is rotated 90° in the first preset direction (such as counterclockwise); to change the first unfolded state to the first folded state, the primary guardrail assembly 7 is rotated 90° in the second preset direction (such as counterclockwise). The state switching of the secondary guardrail component 8 can be achieved by applying force to extend or retract it relative to the primary guardrail component 7. For example, when the primary guardrail component 7 is in the first extended state, applying force to move the secondary guardrail component 8 upward relative to the primary guardrail component 7 will switch the secondary guardrail component 8 from the second folded state to the second extended state; if force is applied to move the secondary guardrail component 8 downward relative to the primary guardrail component 7, the secondary guardrail component 8 will switch from the second extended state to the second folded state. In this embodiment, when the secondary guardrail component 8 is in the second folded state, the overall length of the primary guardrail component 7 and the secondary guardrail component 8 is the same as the length of the primary guardrail component 7. The state can be switched by applying force to the third-level guardrail assembly 9 to make it rotate. To change from the third folded state to the third unfolded state, rotate the third-level guardrail assembly 9 270° in the third preset direction (e.g., rotate 270° clockwise). Furthermore, if the worker is standing on the footboard 101, the annular protective area 907 formed by the third-level guardrail assembly 9 and the second-level guardrail assembly 8 surrounds the upper body of the worker, providing good protection for the worker at height and preventing the worker from leaning too far out of the high-altitude work platform and falling, thus further improving the safety of the footboard device. To change from the third unfolded state to the third folded state, rotate the third-level guardrail assembly 9 270° in the fourth preset direction (e.g., rotate 270° counterclockwise).

[0022] The pedal device in this embodiment includes a primary guardrail assembly 7, a secondary guardrail assembly 8, and a tertiary guardrail assembly 9, all of which can be switched between states. Operators can quickly operate these components according to actual needs, allowing the pedal device to operate in multiple states and perform various functions. For example, when all three components are in their folded states, the pedal device occupies less space, making it easier to store and transport. When all three components are in their unfolded states, they effectively protect the operator standing on the pedal 1, improving the safety of the device. Furthermore, operators can also, according to actual needs (such as when there is no need to lean out of the aerial work platform), operate the primary guardrail assembly 7 and secondary guardrail assembly 8 to their unfolded states, and the tertiary guardrail assembly 9 to its third folded state. In this case, the operator can hold onto the secondary component with one hand and perform aerial work with the other.

[0023] In one embodiment of this application, the pedal 1 includes a pedal portion 101 and a first mounting bracket portion 102 and a second mounting bracket portion 103 respectively disposed at the lateral ends of the pedal portion 101. The first mounting bracket portion 102 and the second mounting bracket portion 103 are both located at one longitudinal end of the pedal portion 101 and each forms a connecting rod mounting groove 108. The connecting rod mounting groove 108 has a first opening facing and communicating with the stepping space on the pedal portion 101. The primary guardrail assembly 7 includes: The first connecting rod 701, a portion of the first connecting rod 701 extends into the connecting rod mounting groove 108 of the first mounting bracket 102 and is rotatably connected to the first mounting bracket 102; The second connecting rod 702, a portion of the second connecting rod 702 extends into the connecting rod mounting groove 108 of the second mounting bracket 103 and is rotatably connected to the second mounting bracket 103; The third connecting rod 703 is connected to the first connecting rod 701 and the second connecting rod 702 at its two ends respectively. The first locking element 704 is used to lock or unlock the first connecting rod 701 and the first mounting bracket part 102; The second locking element 705 is used to lock or unlock the second connecting rod 702 and the second mounting bracket part 103.

[0024] Specifically, the first mounting bracket 102 and the second mounting bracket 103 are both disposed on the longitudinal vertical sidewall of the pedal portion 101. The pedal portion 101 has a notch corresponding to the first opening on the vertical sidewall away from the first locking module 5. The horizontal cross-section of the first mounting bracket 102 and the second mounting bracket 103 is U-shaped. The pedal portion 101 includes the pedal portion 101 body and multiple vertical sidewalls disposed on the pedal portion 101 body. The stepping space is formed by the pedal portion 101 body and the multiple vertical sidewalls disposed on the pedal portion 101 body. The first axial end of the first connecting rod 701 extends into the connecting rod mounting groove 108 and is rotatably connected to the first mounting bracket part 102 through the first connecting pin. The first axial end of the second connecting rod 702 extends into the connecting rod mounting groove 108 and is rotatably connected to the second mounting bracket part 103 through the second connecting pin. The two ends of the third connecting rod 703 are respectively connected to the second axial ends of the first connecting rod 701 and / or the second connecting rod 702 and / or the third connecting rod 703. Applying force to the first connecting rod 701 and / or the second connecting rod 702 and / or the third connecting rod 703 can realize the rotation of the first-level guardrail assembly 7, thereby switching the state of the first-level guardrail assembly 7.

[0025] Furthermore, a third through hole is formed on the vertical sidewall of the connecting rod mounting groove 108, a fourth through hole corresponding to the third through hole is formed on the first connecting rod 701, a fifth through hole is formed on the vertical sidewall of the connecting rod mounting groove 108, and a sixth through hole corresponding to the third through hole is formed on the second connecting rod 702. Both the first locking member 704 and the second locking member 705 can be selected as pins. After the primary guardrail assembly 7 is switched to the first unfolded state, part of the first locking member 704 is inserted into the third and fourth through holes, thereby locking the first connecting rod 701 and the first mounting bracket part 102. Together, insert part of the second locking member 705 into the fifth and sixth through holes, that is, lock the second connecting rod 702 and the second mounting bracket part 103 together, so that the first-level guardrail assembly 7 is stably in the first unfolded state; remove the first locking member 704 from the third and fourth through holes, that is, unlock the first connecting rod 701 and the first mounting bracket part 102; remove the second locking member 705 from the fifth and sixth through holes, that is, unlock the second connecting rod 702 and the second mounting bracket part 103, so as to facilitate switching the first-level guardrail assembly 7 to the first folded state.

[0026] In one embodiment of this application, the primary guardrail assembly 7 further includes a first mounting rod 706 and a second mounting rod 707. The first mounting rod 706 is disposed on the lateral outer wall of the first connecting rod 701 and distributed parallel to the first connecting rod 701. The second mounting rod 707 is disposed on the lateral outer wall of the second connecting rod 702 and distributed parallel to the second connecting rod 702. The secondary guardrail assembly 8 includes: The fourth connecting rod 801 is axially movable and inserted inside the first mounting rod 706; The fifth connecting rod 802 is axially movable and inserted inside the second mounting rod 707; The sixth connecting rod 803 is connected to the fourth connecting rod 801 and the fifth connecting rod 802 at its two ends respectively; The third locking element 804 is used to lock or unlock the first mounting rod 706 and the fourth connecting rod 801; The fourth locking element 805 is used to lock or unlock the second mounting rod 707 and the fifth connecting rod 802.

[0027] Specifically, the first mounting rod 706 has a first through hole extending along its axial direction, and the fourth connecting rod 801 is axially movable and inserted into the first through hole; the second mounting rod 707 has a second through hole extending along its axial direction, and the fifth connecting rod 802 is axially movable and inserted into the second through hole; the two ends of the sixth connecting rod 803 are respectively connected to the first axial end of the fourth connecting rod 801 and the first axial end of the fifth connecting rod 802. Applying force to the fourth connecting rod 801 and / or the fifth connecting rod 802 and / or the sixth connecting rod 803 can realize the vertical movement of the secondary guardrail assembly 8, thereby switching the state of the secondary guardrail assembly 8.

[0028] Furthermore, a seventh through hole is formed on the vertical sidewall of the second axial end of the first mounting rod 706, and an eighth through hole corresponding to the seventh through hole is formed on the fourth connecting rod 801. A ninth through hole is formed on the vertical sidewall of the second axial end of the second mounting rod 707, and a tenth through hole corresponding to the ninth through hole is formed on the fifth connecting rod 802. The third locking member 804 and the fourth locking member 805 can both be selected as pins. After the secondary guardrail assembly 8 is switched to the first unfolded state, part of the third locking member 804 is inserted into the seventh and eighth through holes, that is, the fourth connecting rod 801 and the first mounting rod 707 are connected to the fifth connecting rod 802. The rods 706 are locked together, and part of the fourth locking member 805 is inserted into the ninth and tenth through holes, that is, the fifth connecting rod 802 and the second mounting rod 707 are locked together, so that the secondary guardrail assembly 8 is stably in the second unfolded state; the third locking member 804 is removed from the seventh and eighth through holes, that is, the fourth connecting rod 801 and the first mounting rod 706 are unlocked, and the fourth locking member 805 is removed from the ninth and tenth through holes, that is, the fourth connecting rod 801 and the second mounting rod 707 are unlocked, so that the secondary guardrail assembly 8 can be switched to the second folded state.

[0029] In one embodiment of this application, the secondary guardrail assembly 8 further includes: The first limiting plate is located at the end of the fourth connecting rod 801 away from the sixth connecting rod 803. The first limiting plate is used to prevent the fourth connecting rod 801 from coming out of the first mounting rod 706 when it moves in the direction protruding from the first-level guardrail assembly 7. The second limiting plate is located at the end of the fifth connecting rod 802 away from the sixth connecting rod 803. The second limiting plate is used to prevent the fifth connecting rod 802 from coming out of the second mounting rod 707 when it moves in the direction protruding from the first-level guardrail assembly 7.

[0030] Specifically, the first limiting plate is set at the bottom of the second axial end of the fourth connecting rod 801, and the second limiting plate is set at the bottom of the second axial end of the fifth connecting rod 802. In this embodiment, the setting of the first limiting plate and the second limiting plate improves the convenience for operators to operate the secondary guardrail assembly 8, making it easier for operators to quickly move the secondary guardrail assembly 8 to a position where the third locking member 804 and the fourth locking member 805 can be inserted.

[0031] In one embodiment of this application, a receiving groove 708 for accommodating a sixth connecting rod 803 is formed on the third connecting rod 703. The receiving groove 708 is distributed laterally and its opening faces the sixth connecting rod 803, so that when the secondary guardrail assembly 8 is in the second folded state, the sixth connecting rod 803 can be accommodated in the receiving groove 708, which further improves the overlap between the secondary guardrail assembly 8 and the primary guardrail assembly 7 when the secondary guardrail assembly 8 is in the second folded state.

[0032] In one embodiment of this application, the secondary guardrail assembly 8 further includes a first connecting frame 806 and a second connecting frame 807. The first connecting frame 806 is disposed at the end of the fourth connecting rod 801 away from the first mounting bracket portion 102 and perpendicular to the fourth connecting rod 801. A first connecting groove 808 with an opening facing away from the fourth connecting rod 801 is formed on the first connecting frame 806. The second connecting frame 807 is disposed at the end of the fifth connecting rod 802 away from the second mounting bracket portion 103 and perpendicular to the fifth connecting rod 802. A second connecting groove 809 with an opening facing away from the fifth connecting rod 802 is formed on the second connecting frame 807. The tertiary guardrail assembly 9 includes: The seventh connecting rod 901 is bent. One end of the seventh connecting rod 901 extends into the first connecting groove 808 and is rotatably connected to the first connecting frame 806. The other end of the seventh connecting rod 901 extends into the second connecting groove 809 and is rotatably connected to the second connecting frame 807. The seventh connecting rod 901 and the sixth connecting rod 803 work together to form an annular protective area 907. The bottom wall of the first connecting groove 808 and the bottom wall of the second connecting groove 809 are both formed with a flipping notch for the seventh connecting rod 901 to flip to one side of the secondary guardrail assembly 8. The fifth locking element 902 is used to lock or unlock the seventh connecting rod 901 and the first connecting bracket 806; The sixth locking element 903 is used to lock or unlock the seventh connecting rod 901 and the second connecting bracket 807.

[0033] Specifically, the cross-sections of the first connecting frame 806 and the second connecting frame 807 are both U-shaped. The seventh connecting rod 901 includes a first connecting section 904, a second connecting section 905, and a third connecting section 906. The first end of the first connecting section 904 extends into the first connecting groove 808 and is rotatably connected to the first connecting frame 806 through a third connecting pin. The second connecting section 905 is distributed parallel to the first connecting section 904. The first end of the second connecting section 905 extends into the second connecting groove 809 and is rotatably connected to the second connecting frame 807 through a fourth connecting pin. The two ends of the third connecting section 906 are respectively connected to the second ends of the first connecting section 904 and the second ends of the second connecting section 905. When the operator applies force to the seventh connecting rod 901, the seventh connecting rod 901 can be flipped, thereby achieving the switching of the state of the three-level guardrail assembly 9. The setting of the flipping notch allows the seventh connecting rod 901 to achieve a 270° flip.

[0034] Furthermore, an eleventh through hole is formed on the side wall of the first connecting groove 808, a twelfth through hole corresponding to the eleventh through hole is formed on the first connecting section 904 of the seventh connecting rod 901, a thirteenth through hole is formed on the side wall of the second connecting groove 809, and a fourteenth through hole corresponding to the thirteenth through hole is formed on the second connecting section 905 of the seventh connecting rod 901. Both the fifth locking member 902 and the sixth locking member 903 can be selected as pins. After the three-level guardrail assembly 9 is switched to the third unfolded state, part of the fifth locking member 902 is inserted into the eleventh, twelfth, and fourteenth through holes, i.e., the first connecting section 904... First connecting bracket 806 is locked together, and part of the sixth locking member 903 is inserted into the thirteenth and fourteenth through holes, that is, the second connecting section 905 and the second connecting bracket 807 are locked together, so that the three-level guardrail assembly 9 is stably in the third unfolded state; the sixth locking member 903 is removed from the thirteenth and fourteenth through holes, that is, the first connecting section 904 and the first connecting bracket 806 are unlocked, and the sixth locking member 903 is removed from the thirteenth and thirteenth through holes, that is, the second connecting section 905 and the second connecting bracket 807 are unlocked, so that the three-level guardrail assembly 9 can be switched to the third folded state.

[0035] Furthermore, in this embodiment, the first locking member 704, the second locking member 705, the third locking member 804, the fourth locking member 805, the fifth locking member 902, and the sixth locking member 903 can all be selected as quick-release pins. This is beneficial to further improve the stability and reliability of the first-level guardrail assembly 7, the second-level guardrail assembly 8, and the third-level guardrail assembly 9 when they are in their respective unfolded states. It also prevents the locking members from accidentally coming out of their corresponding perforations, which could cause the first-level guardrail assembly 7, the second-level guardrail assembly 8, and the third-level guardrail assembly 9 to accidentally switch from their respective unfolded states to their respective folded states, thus affecting the usability of the pedal device.

[0036] In one embodiment of this application, such as Figure 1 As shown, the pedal device also includes a foot pedal module 10 disposed at the bottom of the pedal 1 and rotatably connected to the pedal 1. The foot pedal module 10 is used to provide a foot support surface to assist in stepping onto the pedal 1.

[0037] Specifically, in this embodiment, the pedal 1 also includes a first mounting base 106 and a second mounting base 107 located on the horizontal sides of the bottom of the pedal 1, respectively. The foot pedal module 10 includes an eighth connecting rod 1001, a ninth connecting rod 1002 and a tenth connecting rod 1003. The first end of the eighth connecting rod 1001 is rotatably connected to the first mounting base 106 through a fifth connecting pin. The first end of the ninth connecting rod 1002 is rotatably connected to the second mounting base 107 through a sixth connecting pin. The two ends of the tenth connecting rod 1003 are connected to the second ends of the eighth connecting rod 1001 and the second ends of the ninth connecting rod 1002, respectively. The end face of the tenth connecting rod 1003 facing the pedal 1 is a stepping support surface. The operator can step onto the pedal 1 by stepping on the stepping support surface.

[0038] In one embodiment of this application, such as Figure 7 As shown, the pedal device further includes a second locking module 11 disposed on the foot pedal module 10 and the pedal 1 and used for locking or unlocking the foot pedal module 10, wherein the second locking module 11 includes: The locking mounting base 1101 is located at the bottom of the pedal 1 and forms an installation space; The locking pin 1102 is laterally movable and inserted into the locking mounting base 1101 and passes through the mounting space; The limiting pin 1103 is inserted radially into the locking pin 1102 and located in the installation space; The elastic element 1104 is sleeved on the outer periphery of the locking pin 1102 and its two ends abut against the limit pin 1103 and the side wall of the installation space, respectively. The foot pedal module 10 has a socket for inserting part of the locking pin 1102.

[0039] Specifically, the locking pin 1102 includes a first cylindrical portion 1105 and a second cylindrical portion 1106 perpendicular to the first cylindrical portion 1105. The first cylindrical portion 1105 is located outside the locking mounting base 1101, and the second cylindrical portion 1106 passes laterally through the mounting space. In this embodiment, the elastic element 1104 can be a spring. The limiting pin 1103 and the elastic element 1104 are both disposed on the second cylindrical portion 1106. The insertion hole can be disposed on the eighth connecting rod 1001 or the ninth connecting rod 1002. When the foot pedal module 10 performs the auxiliary climbing function, the eighth connecting rod 1001 and the ninth connecting rod 1002 of the foot pedal module 10 are both distributed vertically. At this time, part of the second cylindrical part 1106 is not inserted into the socket, the elastic element 1104 is in the extended state, and the foot pedal module 10 is in its unlocked state. When the foot pedal module 10 is not needed, the operator can first pull the locking pin 1102 away from the socket, the elastic element 1104 is in the retracted state, and then flip the foot pedal module 10 so that it fits against the bottom of the pedal 1. After the foot pedal module 10 is flipped into place, the locking pin 1102 is released. Under the action of the elastic element 1104, the locking pin 1102 moves towards the socket, and part of the locking pin 1102 (i.e., part of the second cylindrical part 1106) is inserted into the socket, thereby locking the foot pedal module 10, and the foot pedal module 10 is in its locked state. The second locking module 11 enables the foot pedal module 10 to be folded, which helps to further reduce the space occupied by the pedal device when it is in the folded state.

[0040] In one embodiment of this application, such as Figures 8-10 As shown, the pedal device also includes: Mounting bracket module 2 includes a first mounting bracket 201 and a second mounting bracket 202 respectively disposed on the bottom horizontal sides of the pedal 1. The first mounting bracket 201 has a first locking groove 203 for the first horizontal railing 3 of the aerial work platform to be inserted into. The first locking groove 203 is longitudinally continuous and has a downward-facing second opening. The second mounting bracket 202 has a second locking groove 204 for the second horizontal railing 4 of the aerial work platform to be inserted into. The second locking groove 204 is longitudinally continuous and has a downward-facing third opening. The first locking module 5 includes a first locking mechanism 501 and a second locking mechanism 502, which are movably disposed on the pedal 1 and located on the lateral sides of the pedal 1 respectively. The first locking mechanism 501 is used to vertically lock the first lateral railing 3 in the first locking groove 203, and the second locking mechanism 502 is used to vertically lock the second lateral railing 4 in the second locking groove 204.

[0041] Specifically, the aerial work platform in this embodiment includes a platform base plate and a fence assembly disposed above the platform base plate. The fence assembly includes a first longitudinal railing, a second longitudinal railing, a first transverse railing 3, and a second transverse railing 4. The first longitudinal railing and the second longitudinal railing are located on the longitudinal sides of the platform base plate and are distributed transversely. The first transverse railing 3 and the second transverse railing 4 are located on the transverse sides of the platform base plate and are distributed longitudinally. The platform base plate, the first longitudinal railing, the second longitudinal railing, the first transverse railing 3, and the second transverse railing 4 together form the work platform space.

[0042] In this embodiment, both the first locking groove 203 and the second locking groove 204 are longitudinally continuous and open downwards. The lateral distance between the first mounting bracket 201 and the second mounting bracket 202 is consistent with the lateral distance between the first horizontal railing 3 and the second horizontal railing 4. Both the first locking mechanism 501 and the second locking mechanism 502 have an unlocked state and a locked state. In the unlocked state of the first locking mechanism 501 and the second locking mechanism 502, the first horizontal railing 3 and the second horizontal railing 4 can be respectively locked into the first locking groove 203 and the second locking groove 204. In the locked state of the first locking mechanism 501 and the second locking mechanism 502, the first horizontal railing 3 is locked in the first locking groove 203 (the first horizontal railing 3 cannot move vertically relative to the first mounting bracket 201), and the second horizontal railing 4 is locked in the second locking groove 204 (the second horizontal railing 4 cannot move vertically relative to the second mounting bracket 202).

[0043] When installing the footboard device, the operator first operates the first locking mechanism 501 and the second locking mechanism 502 to unlock them. Then, the operator applies force to move the footboard device downwards, engaging the first horizontal railing 3 and the second horizontal railing 4 into the first locking groove 203 and the second locking groove 204, respectively. After the first horizontal railing 3 and the second horizontal railing 4 are engaged, the operator operates the first locking mechanism 501 and the second locking mechanism 502 to lock them, thus locking the first horizontal railing 3 in the first locking groove 203 and the second horizontal railing 4 in the second locking groove 204, preventing the footboard device from detaching from the first horizontal railing 3 and the second horizontal railing 4. When disassembling the footboard device, the operator first operates the first locking mechanism 501 and the second locking mechanism 502 to unlock them, then applies force to move the footboard device upwards to detach it from the aerial work platform.

[0044] The pedal device in this embodiment has a simple structure, consisting of a mounting bracket module 2 and a first locking module 5. The first mounting bracket 201 of the mounting bracket module 2 has a first locking groove 203 for the first horizontal railing 3 of the aerial work platform to be inserted into. The first locking groove 203 is longitudinally continuous and has a downward-facing second opening. The second mounting bracket 202 of the mounting bracket module 2 has a second locking groove 204 for the second horizontal railing 4 of the aerial work platform to be inserted into. The second locking groove 204 is longitudinally continuous and has a downward-facing third opening. The above configuration allows the pedal device to be quickly locked onto the first horizontal railing 3 and the second horizontal railing 4 of the aerial work platform and vertically locked during installation. This simplifies operation and improves the efficiency of installation and disassembly of the pedal device, making it easier for workers to enter complex working conditions where it is difficult to lift the aerial work platform into position.

[0045] In one embodiment of this application, such as Figure 12 As shown, both the first locking mechanism 501 and the second locking mechanism 502 include: A bending bracket 503 is disposed below the pedal 1 and includes a first horizontal segment 5031, a second horizontal segment 5032 and a vertical connecting segment 5033. The second horizontal segment 5032 is vertically spaced below the first horizontal segment 5031. The two ends of the vertical connecting segment 5033 are respectively connected to the first horizontal segment 5031 and the second horizontal segment 5032. The length of the second horizontal segment 5032 is greater than the length of the first horizontal segment 5031. The locking rod 504 includes a connecting rod portion 5041 and a handle portion 5042. The handle portion 5042 is located above the pedal 1. The top end of the connecting rod portion 5041 is connected to the first circular ear plate 5043 and the second circular ear plate 5044 of the handle portion 5042 via a pin. The bottom end of the connecting rod portion 5041 passes through the pedal 1, the first horizontal section 5031 and the second horizontal section 5032 in sequence and is threadedly connected to the fastener 505. The two ends of the pin are eccentrically set on the first circular ear plate 5043 and the second circular ear plate 5044, respectively.

[0046] Specifically, in this embodiment, the handle portion 5042 includes a handle body 5045 and a first circular ear plate 5043 and a second circular ear plate 5044 located at one end of the handle body 5045 along its length. The first circular ear plate 5043 and the second circular ear plate 5044 are spaced apart along the width direction of the handle body 5045. A first through hole and a second through hole are formed on the first circular ear plate 5043 and the second circular ear plate 5044, respectively. The first through hole is eccentrically distributed on the first circular ear plate 5043, and the second through hole is eccentrically distributed on the second circular ear plate 5044. The top end of the connecting rod 5041 extends between the first circular ear plate 5043 and the second circular ear plate 5044. One end of the pin is engaged on the side end face of the first circular ear plate 5043, and the other end of the pin passes through the first circular ear plate 5043, the top end of the connecting rod 5041, and the second circular ear plate 5044 in sequence and is engaged on the side end face of the second circular ear plate 5044 away from the first circular ear plate 5043. In this embodiment, the fastener 505 can be a locking nut, and the bottom end of the connecting rod 5041 is provided with an external thread that mates with the locking nut.

[0047] The handle 5042 has a vertical and a horizontal state. After the first locking mechanism 501 and the second locking mechanism 502 are installed on the pedal 1, the position of the fastener 505 on the connecting rod 5041 is adjusted so that when the handle 5042 is in the vertical state, the distance between the bottom surface of the pedal 1 and the top surface of the fastener 505 is consistent with the height of the bent bracket 503 (i.e., the distance between the top surface of the first horizontal segment 5031 and the bottom surface of the second horizontal segment 5032). At this time, the bent bracket 503 is in a natural state and can pivot around the central axis of the connecting rod 5041. If the pedal device is to be installed, the bent bracket 503 must first be rotated to the first preset position. At this time, the second horizontal segment 5032 is distributed longitudinally so that the first horizontal railing 3, the first The two horizontal railings 4 can smoothly engage with the first locking groove 203 and the second locking groove 204. After the first horizontal railing 3 and the second horizontal railing 4 are engaged, the bending bracket 503 is rotated to the second preset position. At this time, the second horizontal section 5032 is distributed horizontally and located below the horizontal railing. Then, the handle 5042 is operated to change it to a horizontal state. Since the two ends of the pin are eccentrically set on the first circular ear plate 5043 and the second circular ear plate 5044 respectively, during the process of the handle 5042 changing from a vertical state to a horizontal state, the connecting rod 5041 moves upward, the bending bracket 503 is vertically compressed and can no longer rotate, and the horizontal railing is restricted between the second horizontal section 5032 and the mounting bracket and cannot move vertically relative to it. The first locking mechanism 501 and the second locking mechanism 502 described above have a simple structure, are easy to operate, and can cooperate well with the first mounting bracket 201 and the second mounting bracket 202 to vertically limit the first horizontal railing 3 and the second horizontal railing 4.

[0048] In one embodiment of this application, such as Figure 11 As shown, a first flexible pad 6 is provided on the groove wall of the first snap-fit ​​groove 203. The first flexible pad 6 is used to increase the friction between the groove wall of the first snap-fit ​​groove 203 and the first horizontal railing 3 and to protect the first horizontal railing 3 and the first mounting bracket. The second flexible pad is provided on the groove wall of the second snap-fit ​​groove 204. The second flexible pad is used to increase the friction between the groove wall of the second snap-fit ​​groove 204 and the second horizontal railing 4 and to protect the second horizontal railing 4 and the second mounting bracket.

[0049] Specifically, in this embodiment, the groove wall of the first snap-fit ​​groove 203 includes the top wall of the first snap-fit ​​groove 203 and the vertical side wall of the first snap-fit ​​groove 203, and the groove wall of the second snap-fit ​​groove 204 includes the top wall of the second snap-fit ​​groove 204 and the vertical side wall of the second snap-fit ​​groove 204. There are two sets of first flexible pads 6, one set of first flexible pads 6 is disposed on the top wall of the first snap-fit ​​groove 203, and the other set of first flexible pads 6 is disposed on the vertical side wall of the first snap-fit ​​groove 203; there are two sets of second flexible pads, one set of second flexible pads is disposed on the top wall of the second snap-fit ​​groove 204, and the other set of second flexible pads is disposed on the vertical side wall of the second snap-fit ​​groove 204. The first flexible pads 6 and the second flexible pads can be made of rubber or silicone, which can provide sufficient friction between the mounting bracket and the corresponding horizontal rail after the pedal device is installed to prevent the pedal device from moving arbitrarily along the axial direction after installation, and can also protect the paint on the mounting bracket and the paint on the horizontal rail.

[0050] In one embodiment of this application, both the first mounting bracket 201 and the second mounting bracket 202 are laterally adjustable at the bottom of the pedal 1.

[0051] Specifically, the pedal 1 includes a pedal portion 101 arranged in a horizontal direction. The pedal portion 101 has a first mounting hole group 104 and a second mounting hole group 105 on its lateral sides. The first mounting hole group 104 includes multiple first mounting holes 104 spaced laterally. A first mounting bracket 201 is connected to the pedal portion 101 via a first bolt assembly installed in the first mounting hole 104. Installing the first bolt assembly in different first mounting holes 104 allows for lateral position adjustment of the first mounting bracket 201. Similarly, the second mounting hole group 105 includes multiple second mounting holes 105 spaced laterally. A second mounting bracket 202 is connected to the pedal portion 101 via a second bolt assembly installed in the second mounting hole 105. Installing the second bolt assembly in different second mounting holes 105 allows for lateral position adjustment of the second mounting bracket 202. This configuration allows the pedal device to be installed on aerial work platforms of various widths, expanding the applicability of the pedal device.

[0052] Another embodiment of this application provides an aerial work platform, which includes the footboard device for aerial work platforms described in the above embodiments.

[0053] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0054] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0056] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A footboard device for an aerial work platform, characterized in that, The pedal device includes: Pedal (1); The primary guardrail assembly (7) is rotatably connected to one longitudinal end of the pedal (1). The primary guardrail assembly (7) has a first unfolded state and a first folded state. In the first unfolded state, the primary guardrail assembly (7) is distributed vertically. In the first folded state, the primary guardrail assembly (7) is parallel to the pedal (1) and fits together. The secondary guardrail assembly (8) is vertically movable and is mounted on the primary guardrail assembly (7) and has a second unfolded state and a second folded state. In the second unfolded state, the secondary guardrail assembly (8) extends upward along the length direction of the primary guardrail assembly (7); in the second folded state, the secondary guardrail assembly (8) and the primary guardrail assembly (7) overlap vertically. The third-level guardrail assembly (9) is rotatably mounted on the second-level guardrail assembly (8) and has a third unfolded state and a third folded state. In the third unfolded state, the third-level guardrail assembly (9) is perpendicular to the second-level guardrail assembly (8) and together with the second-level guardrail assembly (8) above the pedal (1) forms an annular protective area (907). In the third folded state, the third-level guardrail assembly (9) is parallel to the second-level guardrail assembly (8) and fits together.

2. The footboard device for an aerial work platform according to claim 1, characterized in that, The pedal (1) includes a pedal portion (101) and a first mounting bracket portion (102) and a second mounting bracket portion (103) respectively disposed at the lateral ends of the pedal portion (101). The first mounting bracket portion (102) and the second mounting bracket portion (103) are both located at one longitudinal end of the pedal portion (101) and both form a connecting rod mounting groove (108). The connecting rod mounting groove (108) has a first opening facing the stepping space on the pedal portion (101) and communicating with the stepping space. The primary guardrail assembly (7) includes: The first connecting rod (701) extends into the connecting rod mounting groove (108) of the first mounting bracket part (102) and is rotatably connected to the first mounting bracket part (102); The second connecting rod (702) extends into the connecting rod mounting groove (108) of the second mounting bracket part (103) and is rotatably connected to the second mounting bracket part (103); The third connecting rod (703) is connected at both ends to the first connecting rod (701) and the second connecting rod (702), respectively. The first locking member (704) is used to lock or unlock the first connecting rod (701) and the first mounting bracket part (102). The second locking element (705) is used to lock or unlock the second connecting rod (702) and the second mounting bracket (103).

3. The footboard device for an aerial work platform according to claim 2, characterized in that, The primary guardrail assembly (7) further includes a first mounting rod (706) and a second mounting rod (707). The first mounting rod (706) is disposed on the lateral outer wall of the first connecting rod (701) and distributed parallel to the first connecting rod (701). The second mounting rod (707) is disposed on the lateral outer wall of the second connecting rod (702) and distributed parallel to the second connecting rod (702). The secondary guardrail assembly (8) includes: The fourth connecting rod (801) is axially movable and inserted inside the first mounting rod (706); The fifth connecting rod (802) is axially movable and inserted inside the second mounting rod (707); The sixth connecting rod (803) is connected at both ends to the fourth connecting rod (801) and the fifth connecting rod (802). The third locking element (804) is used to lock or unlock the first mounting rod (706) and the fourth connecting rod (801). The fourth locking element (805) is used to lock or unlock the second mounting rod (707) and the fifth connecting rod (802).

4. The footboard device for an aerial work platform according to claim 3, characterized in that, The secondary guardrail component (8) also includes: A first limiting plate is disposed at the end of the fourth connecting rod (801) away from the sixth connecting rod (803). The first limiting plate is used to prevent the fourth connecting rod (801) from dislodging from the first mounting rod (706) when it moves in the direction protruding from the first-level guardrail assembly (7). A second limiting plate is disposed at the end of the fifth connecting rod (802) away from the sixth connecting rod (803). The second limiting plate is used to prevent the fifth connecting rod (802) from dislodging from the second mounting rod (707) when it moves in the direction protruding from the primary guardrail assembly (7).

5. The footboard device for an aerial work platform according to claim 3, characterized in that, The third connecting rod (703) has a receiving groove (708) for accommodating the sixth connecting rod (803).

6. The footboard device for an aerial work platform according to claim 3, characterized in that, The secondary guardrail assembly (8) further includes a first connecting frame (806) and a second connecting frame (807). The first connecting frame (806) is disposed at the end of the fourth connecting rod (801) away from the first mounting bracket (102) and is perpendicular to the fourth connecting rod (801). A first connecting groove (808) with an opening facing away from the fourth connecting rod (801) is formed on the first connecting frame (806). The second connecting frame (807) is disposed at the end of the fifth connecting rod (802) away from the second mounting bracket (103) and is perpendicular to the fifth connecting rod (802). A second connecting groove (809) with an opening facing away from the fifth connecting rod (802) is formed on the second connecting frame (807). The tertiary guardrail assembly (9) includes: The seventh connecting rod (901) is bent. One end of the seventh connecting rod (901) extends into the first connecting groove (808) and is rotatably connected to the first connecting frame (806). The other end of the seventh connecting rod (901) extends into the second connecting groove (809) and is rotatably connected to the second connecting frame (807). The seventh connecting rod (901) and the sixth connecting rod (803) work together to form the annular protective area (907). The bottom wall of the first connecting groove (808) and the bottom wall of the second connecting groove (809) are both formed with a flipping notch for the seventh connecting rod (901) to flip to one side of the secondary guardrail assembly (8). The fifth locking element (902) is used to lock or unlock the seventh connecting rod (901) and the first connecting frame (806). The sixth locking element (903) is used to lock or unlock the seventh connecting rod (901) and the second connecting bracket (807).

7. The footboard device for an aerial work platform according to claim 1, characterized in that, The pedal device also includes a foot pedal module (10) disposed at the bottom of the pedal (1) and rotatably connected to the pedal (1), the foot pedal module (10) being used to provide a foot support surface for assisting in stepping onto the pedal (1).

8. The footboard device for an aerial work platform according to claim 7, characterized in that, The pedal device further includes a second locking module (11) disposed on the foot pedal module (10) and the pedal (1) for locking or unlocking the foot pedal module (10).

9. The footboard device for an aerial work platform according to claim 8, characterized in that, The second locking module (11) includes: A locking mounting base (1101) is provided at the bottom of the pedal (1) and forms an installation space; A locking pin (1102) is laterally movable and inserted into the locking mounting base (1101) and passes through the mounting space; A limiting pin (1103) is inserted radially into the locking pin (1102) and located in the mounting space; The elastic element (1104) is sleeved on the outer periphery of the locking pin (1102) and its two ends abut against the side wall of the limiting pin (1103) and the mounting space, respectively. The foot pedal module (10) has a socket for inserting part of the locking pin (1102).

10. The footboard device for an aerial work platform according to any one of claims 1-9, characterized in that, The pedal device further includes: The mounting bracket module (2) includes a first mounting bracket (201) and a second mounting bracket (202) respectively disposed on the bottom lateral sides of the pedal (1). The first mounting bracket (201) has a first locking groove (203) for the first lateral railing (3) of the aerial work platform to be inserted into. The first locking groove (203) is longitudinally continuous and has a downward-facing second opening. The second mounting bracket (202) has a second locking groove (204) for the second lateral railing (4) of the aerial work platform to be inserted into. The second locking groove (204) is longitudinally continuous and has a downward-facing third opening. The first locking module (5) includes a first locking mechanism (501) and a second locking mechanism (502) movably disposed on the pedal (1) and located on the lateral sides of the pedal (1) respectively. The first locking mechanism (501) is used to vertically lock the first lateral railing (3) in the first locking groove (203), and the second locking mechanism (502) is used to vertically lock the second lateral railing (4) in the second locking groove (204).

11. An aerial work platform, characterized in that, The aerial work platform includes a footboard device for aerial work platforms according to any one of claims 1-10.

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