Aerial work platform and safety bucket thereof

Abstract

The application discloses a high-altitude operation vehicle and a safe working bucket thereof, and belongs to the technical field of high-altitude operation vehicles.The high-altitude operation vehicle comprises a vehicle body, a platform plate, a rhombic elevator, a working bucket, a combined climbing ladder and a safety rod.The combined climbing ladder is provided with a fixed climbing ladder and a plurality of climbing ladder modules.The safety rod is used for connecting a safety rope, and is slidably arranged on the side of the fixed climbing ladder after being detached.The safety rod is locked with the fixed climbing ladder or the climbing ladder modules after being pulled down by external force.The working bucket can be quickly returned to the ground through the standby climbing channel in the case of equipment failure in extreme weather, so that the working personnel can not be in the extreme weather for a long time, and the safety of high-altitude operation in extreme weather is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of aerial work platforms, and more specifically to an aerial work platform and its safety work bucket. Background Technology

[0002] Aerial work platforms are indispensable special equipment in modern urban construction and maintenance. Their core function is to smoothly transport personnel and tools to high-altitude work sites via hydraulic or electric lifting systems. Among them, the safety work bucket with a diamond-shaped lifting mechanism is an important innovation of this type of equipment: it achieves vertical lifting through a four-bar hinged structure, which has higher anti-rollover stability and a larger horizontal working range compared to the traditional straight boom structure.

[0003] However, existing safety designs still have shortcomings in extreme working conditions: when the main control system completely fails (such as hydraulic pipe bursts or electrical faults) or the mechanical structure deforms due to severe weather (such as strong winds or hail), although an emergency manual pump can be provided for slow descent, the operation is cumbersome and time-consuming, forcing workers to wait for rescue in a dangerous high-altitude environment. The failure rate is even higher in scenarios such as power grid repair and post-storm disaster relief, and traditional work buckets lack a rapid autonomous escape mechanism, making trapped personnel completely dependent on external rescue, which not only delays the repair progress but also directly threatens their lives.

[0004] Therefore, this application designs an aerial work platform equipped with an auxiliary ladder for climbing up and down and capable of self-locking in the event of a fall to ensure the safety of the workers, as well as its safety work bucket. Summary of the Invention

[0005] The purpose of this invention is to provide an aerial work platform vehicle and its safety work bucket, in order to solve the problems mentioned above.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an aerial work platform vehicle and its safety work bucket, comprising: The vehicle body has a platform plate welded and fixed to its upper part; The diamond-shaped elevator has one lower end rotatably connected to the platform plate, and the other lower end slidably connected to both sides of the platform plate. The lower end of the working bucket is rotatably connected to one end of the upper part of the diamond-shaped elevator, and simultaneously slidably connected to the other end of the upper part of the diamond-shaped elevator. The modular ladder consists of a fixed ladder and several ladder modules. The upper end of the fixed ladder is welded and fixed to the side of the work bucket. The lower end of the ladder module is slidably connected to the platform plate. The ladder modules are rotatably connected to each other through connecting rods. The fixed ladder and the ladder modules are rotatably connected through connecting rods. The last ladder module is connected to the lower sliding end of the diamond-shaped lifter through a push rod. The safety bar is detachably connected to the upper part of the work bucket and is used to connect the safety rope. After being detached, the safety bar is slidably installed on the side of the fixed ladder. When the safety bar is pulled down by an external force, it is locked to the fixed ladder or ladder module.

[0007] By using a modular ladder system, different numbers of ladder modules are automatically assembled at different heights within the work bucket, allowing the ladder height to adapt to the work bucket height. Furthermore, the ladder utilizes the self-sliding of the diamond-shaped lift as its drive mechanism, eliminating the need for additional drive systems. This provides a sufficiently robust backup access route for the work bucket. In the event of extreme weather or equipment damage, workers inside the work bucket can quickly return to the ground, ensuring they are not exposed to prolonged high-altitude extreme weather conditions and enabling autonomous escape. This effectively improves the safety of high-altitude operations under extreme weather conditions.

[0008] Furthermore, rollers are provided at both the upper and lower sliding ends of the diamond-shaped lifter to assist its sliding displacement. The push rod is rotatably connected to the lower sliding end of the diamond-shaped lifter. This rotatable connection is equipped with a limit. J-shaped grooves are provided on both sides of the fixed ladder and the ladder module. One end of the connecting rod is rotatably connected to the inner wall of the J-shaped groove, and the other end of the connecting rod is rotatably connected to the side wall of the ladder module.

[0009] Furthermore, the push rod includes a spring telescopic plate and a push handle. One end of the spring telescopic plate is fixedly connected to the ladder module at the rear end, and the other end of the spring telescopic plate is welded and fixed to the push handle. The lower end of the push handle is slidably connected to the platform plate with a limit, and the rear end of the push handle is rotatably connected to the lower sliding end of the diamond-shaped lifter.

[0010] Furthermore, both sides of the fixed ladder and the ladder module have through holes, and the front end of the through hole has a trapezoidal groove. Inside the trapezoidal groove, locking blocks are evenly fixed from top to bottom. Receiving grooves are formed on both sides of the through hole from top to bottom, and soft friction blocks are evenly arranged on both sides of the receiving grooves. A protective frame is welded and fixed to the upper end of the work bucket. A reinforcing rod to enhance structural stability is welded and fixed to the side of the protective frame. A pin is fixed to one side of the upper end of the reinforcing rod, and a trapezoidal groove is formed on the other side of the upper end of the reinforcing rod. The reinforcing rod is connected to the safety rod through the pin and the trapezoidal groove.

[0011] Furthermore, an annular groove is provided in the middle of the safety bar, and the safety rope is tied and fixed in the annular groove. A trapezoidal pin is fixedly installed on one side of the lower end of the safety bar, and a locking groove is provided on the other side of the lower end of the safety bar. Soft limiting strips are provided on both sides of the safety bar.

[0012] With its safety bar and special slotted ladder module design, the safety rope can be tied or locked to the safety bar when the worker is inside the work bucket, providing protection for the worker. When a spare access route is needed, the safety bar can be disassembled and inserted into the through hole. In the event of a fall while climbing the ladder, the safety bar will quickly engage with the trapezoidal through slot to ensure the worker's safety, further enhancing the safety of the active escape process.

[0013] Furthermore, the diamond-shaped elevator is equipped with a hydraulic cylinder that drives the diamond-shaped elevator to expand and contract, and a controller is installed on the upper part of the work bucket to facilitate the operation of the work bucket by personnel working at height.

[0014] Compared with existing technologies, it has the following beneficial effects: By setting up a modular ladder, different numbers of ladder modules are automatically spliced ​​at different heights in the work bucket, so that the height of the modular ladder adapts to the height of the work bucket. Furthermore, the diamond-shaped lifter uses its own sliding as a drive, eliminating the need for an additional drive. This provides a sufficiently strong backup access channel for the work bucket. In the event of extreme weather or equipment damage, the workers in the work bucket can quickly return to the ground through it, ensuring that the workers are not exposed to extreme weather conditions at high altitudes for extended periods, achieving autonomous escape, and effectively improving the safety of high-altitude operations under extreme weather conditions. With its safety bar and special slotted ladder module design, the safety rope can be tied or locked to the safety bar when the worker is inside the work bucket, providing protection for the worker. When a spare access route is needed, the safety bar can be disassembled and inserted into the through hole. In the event of a fall while climbing the ladder, the safety bar will quickly engage with the trapezoidal through slot to ensure the worker's safety, further enhancing the safety of the active escape process. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only preferred embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is an overall schematic diagram of an aerial work platform vehicle and its safety work bucket according to the present invention; Figure 2 This is another overall schematic diagram of an aerial work platform and its safety work bucket according to the present invention; Figure 3This is a schematic diagram of a combined ladder structure of an aerial work platform vehicle and its safety work bucket according to the present invention; Figure 4 This is a schematic diagram of the ladder module structure of an aerial work platform and its safety work bucket according to the present invention; Figure 5 This is an enlarged schematic diagram of a partial structure of the present invention (A). Figure 6 This is a schematic diagram of the working bucket structure of an aerial work platform vehicle and its safety working bucket according to the present invention; Figure 7 This is a schematic diagram of the safety bar insertion structure of an aerial work platform vehicle and its safety work bucket according to the present invention; Figure 8 This is a schematic diagram of the safety bar sliding structure of an aerial work platform and its safety bucket according to the present invention.

[0017] In the diagram: 1-Vehicle body; 2-Platform plate; 3-Rhomboid lifter; 31-Roller; 32-Hydraulic cylinder; 4-Work bucket; 41-Protective frame; 42-Reinforcing rod; 43-Pin; 44-Trapezoidal groove; 5-Fixed ladder; 6-Ladder module; 61-J-type slide; 62-Through hole; 63-Trapezoidal through groove; 64-Clamping block; 65-Receiving groove; 66-Soft friction block; 7-Connecting rod; 8-Push rod; 81-Spring telescopic plate; 82-Push handle; 9-Safety bar; 91-Annular groove; 92-Trapezoidal pin; 93-Locking groove; 94-Soft limiting strip. Detailed Implementation

[0018] To better understand the structure, functional features, and advantages of the present invention, preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings: like Figures 1 to 8 As shown, this application proposes an aerial work platform vehicle and its safety work bucket, comprising: The vehicle body 1 has a platform plate 2 welded and fixed to its upper end. The vehicle body 1 can be a wheeled vehicle body 1 or a passenger vehicle body 1 with a carriage structure, so that it can be used in a variety of working conditions. The diamond-shaped lifter 3 is rotatably connected to the platform plate 2 at one lower end and slidably connected to both sides of the platform plate 2 at the other lower end. The diamond-shaped lifter 3 is hydraulically driven and is made of high-strength synthetic steel. When the diamond-shaped lifter 3 expands or contracts, its upper and lower ends slide horizontally to adapt to its shape change. This sliding is equipped with a limit switch to prevent the diamond-shaped lifter 3 from deflecting and to ensure its stability.

[0019] The lower end of the working bucket 4 is rotatably connected to one end of the upper part of the diamond-shaped elevator 3, and simultaneously slidably connected to the other end of the upper part of the diamond-shaped elevator 3. The modular ladder consists of a fixed ladder 5 and several ladder modules 6. The upper end of the fixed ladder 5 is welded and fixed to the side of the work bucket 4. The lower end of the ladder module 6 is slidably connected to the platform plate 2. The ladder modules 6 are rotatably connected to each other through connecting rods 7. The fixed ladder 5 and the ladder modules 6 are rotatably connected through connecting rods 7. The last ladder module 6 is connected to the lower sliding end of the diamond-shaped lifter 3 through a push rod 8. Safety bar 9 is detachably connected to the upper part of the work bucket 4 and is used to connect the safety rope. After being detached, safety bar 9 is slidably installed on the side of the fixed ladder 5. When the safety bar 9 is pulled down by an external force, it is locked with the fixed ladder 5 or the ladder module 6.

[0020] See Figure 1 and Figure 2 Rollers 31 are provided at both the upper and lower sliding ends of the diamond-shaped lifter 3 to assist its sliding displacement. Multiple sets of rollers 31 are provided, and two sets of rollers 31 on the same side are connected to each other. At the same time, a limiting rod is provided on the side of the roller 31, which extends outward and is rotatably and slidably connected to the side wall of the platform plate 2, thereby limiting the diamond-shaped lifter 3. See Figure 2 The push rod 8 is rotatably connected to the lower sliding end of the rhomboid lifter 3, and this rotatable connection is equipped with a limit switch.

[0021] When the diamond-shaped elevator 3 is driven to unfold, its lower end slides and the push rod 8 is driven to move horizontally in sync. The push rod 8 then applies a forward thrust to the climbing module 6. As the work bucket 4 rises, the climbing modules 6 are pushed out of the platform plate 2 one by one, forming a vertical combined climbing structure. Its length is naturally formed according to the height of the work bucket 4.

[0022] See Figure 3 Both the fixed ladder 5 and the ladder module 6 have J-shaped grooves 61 on both sides. One end of the connecting rod 7 is slidably and rotatably connected to the inner wall of the J-shaped groove 61, and the other end of the connecting rod 7 is rotatably connected to the side wall of the ladder module 6. The lower rear ends of both the fixed ladder 5 and the ladder module 6 can be rounded to allow for smoother position changes and prevent interference between them. The rotatable connection between the connecting rod 7 and the J-shaped groove 61 is achieved through bearings, and the sliding connection is equipped with a limit to prevent the connecting rod 7 from dislodging from the J-shaped groove 61. The rotatable connections on both sides of the connecting rod 7 are limited by rotation angles to prevent excessive rotation and misalignment between the ladder modules 6. As the fixed ladder 5 rises with the work bucket 4, one end of the connecting rod 7 slides along the J-shaped slide 61. When it moves to the lower end of the J-shaped slide 61, the ladder module 6 is pushed by the push rod 8, causing the connecting rod 7 to move horizontally, so that one end of the connecting rod 7 enters the short end of the J-shaped slide 61 and rotates at the same time, causing the ladder module 6 to move to the lower end of the fixed ladder 5. Multiple sets of ladder modules 6 perform the same movement to form a combined ladder.

[0023] See Figure 3 The push rod 8 includes: a spring telescopic plate 81 and a push handle 82. One end of the spring telescopic plate 81 is fixedly connected to the last end of the climbing module 6, and the other end of the spring telescopic plate 81 is welded and fixed to the push handle 82. The lower end of the push handle 82 is slidably connected to the platform plate 2 with a limit. The rear end of the push handle 82 is rotatably connected to the lower sliding end of the diamond-shaped lifter 3. The sliding connection between the push handle 82 and the platform plate 2 is equipped with a limit to prevent rotation and to ensure that the push handle 82 can only slide back and forth in the horizontal direction. The spring telescopic plate 81 adopts a limit sliding telescopic form and is equipped with multiple sets of springs inside. When the diamond-shaped lifter 3 drives the push handle 82 to move horizontally, the push handle 82 moves with the spring telescopic plate 81. The spring telescopic plate 81 then applies a pushing or pulling force to the climbing module 6. Through the spring telescopic plate 81, the force on the climbing module 6 is reduced, preventing the rear climbing module 6 from bearing excessive pressure before the previous climbing module 6 is fully lifted, thus achieving the effect of force relief. At the same time, after the previous climbing module 6 is lifted, the subsequent module is sent to the edge of the platform plate 2, and the same applies when the working bucket 4 descends.

[0024] As another embodiment, to ensure the safety of workers when using the modular ladder to actively escape from danger, such as Figures 3 to 8 As shown, both sides of the fixed ladder 5 and the ladder module 6 have through holes 62. The front end of the through hole 62 also has a trapezoidal through groove 63. The trapezoidal through groove 63 is uniformly fixed with a locking block 64 from top to bottom inside. The two side walls of the through hole 62 have receiving grooves 65 from top to bottom. Soft friction blocks are uniformly arranged on both sides of the receiving groove 65.

[0025] The soft friction block 66 is preferably made of memory rubber, which can quickly return to its initial state after deformation, thus ensuring the long-term use effect of the device. After the climbing module 6 is lifted to form a combined climbing ladder, each set of through holes 62 and trapezoidal through grooves 63 of the climbing ladder and climbing module 6 are completely connected from top to bottom to form a through sliding channel. The front end of the trapezoidal through groove 63 extends to the outside of the side wall of the climbing module 6 to accommodate the safety rope.

[0026] See Figure 6 and Figure 7A protective frame 41 is welded and fixed to the upper end of the work bucket 4. A reinforcing rod 42 to enhance structural stability is welded and fixed to the side of the protective frame 41. A pin 43 is fixedly installed on one side of the upper end of the reinforcing rod 42, and a trapezoidal groove 44 is opened on the other side of the upper end of the reinforcing rod 42. The reinforcing rod 42 is connected to the safety rod 9 through the pin 43 and the trapezoidal groove 44. In the initial state, the safety rod 9 is directly connected to the reinforcing rod 42 through the pin 43 and the trapezoidal groove 44. When the operator climbs onto the work bucket 4 to work, he hangs or ties his safety rope to the safety rod 9 to form a safety rope with a hanging height. In addition, the height of the reinforcing bar 42 is higher than that of the guardrail, so that the safety rope binding point is higher and has stronger safety performance in the event of a fall accident.

[0027] See Figure 7 The safety bar 9 has an annular groove 91 in the middle, and the safety rope is tied and fixed in the annular groove 91. A trapezoidal pin 92 is fixedly installed on one side of the lower end of the safety bar 9, and a locking groove 93 is installed on the other side of the lower end of the safety bar 9. Soft limiting strips 94 are provided on both sides of the safety bar 9. The soft limiting strips 94 are preferably made of a low-friction deformable material, such as rubber with a low-friction coating. When in use, the soft limiting strips 94 are placed inside the receiving groove 65, allowing the safety bar 9 to slide within the through hole 62, providing appropriate limitation for its sliding.

[0028] In special circumstances, workers can actively escape using a modular ladder. First, the safety bar 9, to which the safety rope is attached, is removed and placed inside the through hole 62. The soft limiting strip 94 is placed in the receiving groove 65, and the safety rope extends out of the through hole 62 through the trapezoidal through groove 63. It is important to note that in the initial state, the trapezoidal pin 92 of the safety bar 9 is not located in the trapezoidal through groove 63, and the front of the through hole 62 has space to accommodate the trapezoidal pin 92. The safety bar 9 placed inside the through hole 62 is restricted by the soft friction block 66 and cannot slide down by its own weight. This ensures that the safety bar 9 remains higher than the worker during the climbing and descent process. As the worker descends, the safety bar 9 is pulled downward, causing the soft friction block 66 to deform and allowing the safety bar 9 to pass through. In the event of a fall, the safety bar 9 is pulled rapidly by a large external force. The soft limiting strip 94 is dislodged from the receiving groove 65, causing the safety bar 9 to deflect. The trapezoidal pin 92 deflects and inserts into the trapezoidal through groove 63, where it is gradually locked by the narrowing space and the locking block 64, preventing the safety bar 9 from slipping further and avoiding a fall for the operator. The operator can unlock the safety bar 9 by pushing it back into the track.

[0029] In addition, the diamond-shaped elevator 3 is equipped with a hydraulic cylinder 32 that drives the diamond-shaped elevator 3 to expand and contract, and a controller is installed on the upper part of the work bucket 4 so that the high-altitude workers can control the raising and lowering of the work bucket 4.

[0030] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of the present invention without departing from the scope of the present invention are within the protection scope of the present invention.

Claims

1. An aerial work platform vehicle and its safety work bucket, characterized in that, include: Vehicle body (1), with a platform plate (2) welded and fixed to the upper end of the vehicle body (1); The diamond-shaped lifter (3) has one lower end rotatably connected to the platform plate (2) and the other lower end slidably connected to both sides of the platform plate (2); The lower end of the working bucket (4) is rotatably connected to one end of the upper part of the diamond-shaped elevator (3), and simultaneously slidably connected to the other end of the upper part of the diamond-shaped elevator (3); The modular ladder consists of a fixed ladder (5) and several ladder modules (6). The upper end of the fixed ladder (5) is welded and fixed to the side of the work bucket (4). The lower end of the ladder module (6) is slidably connected to the platform plate (2). The ladder modules (6) are rotatably connected to each other by connecting rods (7). The fixed ladder (5) and the ladder modules (6) are rotatably connected by connecting rods (7). The last ladder module (6) is connected to the lower sliding end of the diamond-shaped lifter (3) by a push rod (8). The safety bar (9) is detachably connected to the upper part of the work bucket (4) and is used to connect the safety rope. After the safety bar (9) is detached, it is slidably installed on the side of the fixed ladder (5). When the safety bar (9) is pulled down by an external force, it is locked with the fixed ladder (5) or the ladder module (6).

2. The aerial work platform and its safety work bucket according to claim 1, characterized in that, Rollers (31) are provided at both the upper and lower sliding ends of the diamond-shaped lifter (3) to assist its sliding displacement.

3. The aerial work platform and its safety work bucket according to claim 1, characterized in that, The push rod (8) is rotatably connected to the lower sliding end of the rhomboid lifter (3), and the rotatable connection is provided with a limit.

4. The aerial work platform and its safety work bucket according to claim 3, characterized in that, Both the fixed ladder (5) and the ladder module (6) are provided with J-shaped grooves (61) on both sides. One end of the connecting rod (7) is slidably and rotatably connected to the inner wall of the J-shaped groove (61), and the other end of the connecting rod (7) is rotatably connected to the side wall of the ladder module (6).

5. The aerial work platform and its safety work bucket according to claim 4, characterized in that, The push rod (8) includes a spring telescopic plate (81) and a push handle (82). One end of the spring telescopic plate (81) is fixedly connected to the ladder module (6) at the last end. The other end of the spring telescopic plate (81) is welded and fixed to the push handle (82). The lower end of the push handle (82) is slidably connected to the platform plate (2) with a limit. The rear end of the push handle (82) is rotatably connected to the lower sliding end of the diamond-shaped lifter (3).

6. The aerial work platform and its safety work bucket according to claim 1, characterized in that, Both the fixed ladder (5) and the ladder module (6) have through holes (62) on both sides. The front end of the through hole (62) also has a trapezoidal through groove (63). The trapezoidal through groove (63) has a locking block (64) evenly fixed from top to bottom inside. The two side walls of the through hole (62) have a receiving groove (65) from top to bottom. The receiving groove (65) has a soft friction block evenly arranged on both sides.

7. The aerial work platform and its safety work bucket according to claim 6, characterized in that, A protective frame (41) is welded and fixed to the upper end of the working bucket (4). A reinforcing rod (42) to enhance structural stability is welded and fixed to the side of the protective frame (41). A pin (43) is fixedly installed on one side of the upper end of the reinforcing rod (42). A trapezoidal groove (44) is opened on the other side of the upper end of the reinforcing rod (42). The reinforcing rod (42) is inserted into the safety rod (9) through the pin (43) and the trapezoidal groove (44).

8. The aerial work platform and its safety work bucket according to claim 7, characterized in that, The safety rod (9) has an annular groove (91) in the middle, and the safety rope is tied and fixed in the annular groove (91). A trapezoidal pin (92) is fixedly installed on one side of the lower end of the safety rod (9), and a locking groove (93) is opened on the other side of the lower end of the safety rod (9). Soft limiting strips (94) are provided on both sides of the safety rod (9).

9. The aerial work platform and its safety work bucket according to claim 1, characterized in that, The rhomboid lifter (3) is equipped with a hydraulic cylinder (32) for driving the rhomboid lifter (3) to expand and contract.

10. The aerial work platform and its safety work bucket according to claim 1, characterized in that, The upper part of the work bucket (4) is equipped with a controller so that the high-altitude workers can control the lifting and lowering of the work bucket (4).

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