Aerial work platform truck leveling device with anti-tipping mechanism

Abstract

The utility model provides an aerial work platform car leveling device with an anti-tipping mechanism, and aims to improve the safety and the stability of aerial work. The device integrates a leveling mechanism and an innovative anti-tipping mechanism. The leveling mechanism achieves flexible adjustment of the operation platform through a rotary table, a lower arm, an upper arm, a lifting arm and a bracket. According to the anti-tipping mechanism, the lower arm pull rod and the upper arm pull rod are tightly matched with the rotary table lower arm inhaul cable, the arm tail inhaul cable and the bracket lifting arm inhaul cable to form a stable hinged connection system, tension opposite to the tipping direction can be rapidly provided for the operation platform, external torque is effectively counteracted, and stability and safety of the operation platform are guaranteed. In addition, the anti-tipping mechanism is compact in structure, light in weight, suitable for operation in a narrow space, high in universality and capable of being widely applied to the folding arm type overhead working truck, the production cost is reduced, and the utilization rate of the device is improved. According to the leveling device, remarkable technical progress is brought to the field of high-altitude operation, and the safety of operators is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to high altitude operation platform equipment technical field, specifically point to a kind of high altitude operation platform car leveling device with anti-tipping mechanism. BACKGROUND

[0002] High-altitude operation vehicle keeps the working platform in horizontal state through leveling system when normal working, and the existing folding arm type high-altitude operation vehicle adopts parallelogram linkage type leveling mechanism or chain and sprocket type leveling mechanism, and the two kinds of mechanisms keep the working platform gravity moment balance through pull rod or chain, so that it is in horizontal state. But in high-altitude operation process, this kind of leveling system can only guarantee that the working platform does not tip over to the direction of gravity moment, but lacks corresponding protection in the opposite direction. When the working platform is subjected to the moment opposite to the gravity moment, the working platform can tip over to the direction opposite to the gravity, which can cause the operating personnel to fall out of the working platform, and there is a security risk. To ensure the safety and reliability of high-altitude operation vehicle operation, the anti-tipping of the working platform is very important. SUMMARY

[0003] The technical problem to be solved by the utility model is to overcome the above technical defects, and to provide a high-altitude operation platform vehicle leveling device with an anti-tipping mechanism, which aims to prevent the working platform from tipping over to the direction opposite to the gravity and to ensure the safety of the operating personnel.

[0004] To solve the above technical problems, the technical scheme provided by the utility model is as follows: a high-altitude operation platform vehicle leveling device with an anti-tipping mechanism, comprising:

[0005] A leveling mechanism, comprising a turntable, a lower arm, an upper arm, a lifting arm, a bracket and a working platform, one end of the lower arm is rotatably connected to the turntable through a first hinge shaft, the end of the lower arm away from the turntable is rotatably connected to the upper arm through a second hinge shaft, the end of the upper arm away from the lower arm is rotatably connected to the lifting arm through a third hinge shaft, the end of the lifting arm away from the upper arm is rotatably connected to the bracket through a fourth hinge shaft, and the working platform is fixed to the bracket;

[0006] An anti-tipping mechanism, comprising a lower arm pull rod and an upper arm pull rod, the lower arm pull rod is arranged above the lower arm, one end of the lower arm pull rod is fixed to the inside of the turntable through a turntable lower arm cable; the upper arm pull rod is arranged above the upper arm and is connected to the lower arm pull rod through an arm tail cable; one end of the upper arm pull rod away from the arm tail cable is provided with a bracket lifting arm cable, the bracket lifting arm cable is arranged on the lifting arm and is fixed to the bottom of the bracket.

[0007] Preferably, the two ends of the upper arm pull rod are connected to the bracket lifting arm cable and the arm tail cable through a first connecting piece and a second connecting piece respectively, and the two ends of the lower arm pull rod are connected to the turntable lower arm cable and the arm tail cable through a third connecting piece and a fourth connecting piece respectively.

[0008] Preferably, the first connecting piece, the second connecting piece, the third connecting piece and the fourth connecting piece each comprise a connecting block, a left connecting screw rod and a right connecting screw rod, the connecting block is provided with a left threaded hole and a right threaded hole at two ends respectively, and the left connecting screw rod and the right connecting screw rod are threadedly connected in the left threaded hole and the right threaded hole respectively;

[0009] The left connecting screw rod in the first connecting piece is fixed with the upper end of the bracket lifting arm cable, and the right connecting screw rod in the first connecting piece is fixed with the left end of the upper arm pull rod;

[0010] The left connecting screw rod in the second connecting piece is fixed with the right end of the upper arm pull rod, and the right connecting screw rod in the second connecting piece is fixed with the upper end of the arm tail cable;

[0011] The left connecting screw rod in the third connecting piece is fixed with the upper end of the lower arm cable of the rotating platform, and the right connecting screw rod in the third connecting piece is fixed with the left end of the lower arm pull rod;

[0012] The left connecting screw rod in the fourth connecting piece is fixed with the right end of the lower arm pull rod, and the right connecting screw rod in the fourth connecting piece is fixed with the lower end of the arm tail cable.

[0013] Preferably, the left connecting screw rod is threadedly connected with a left locking nut close to the left end of the connecting block, and the right connecting screw rod is threadedly connected with a right locking nut close to the right end of the connecting block.

[0014] Preferably, the first connecting piece, the second connecting piece, the third connecting piece and the fourth connecting piece each comprise a connecting block, a left connecting screw rod and a right connecting screw rod, the connecting block is provided with a left threaded hole and a right threaded hole at two ends respectively, and the left connecting screw rod and the right connecting screw rod are threadedly connected in the left threaded hole and the right threaded hole respectively;

[0015] The rotating platform lower arm cable passes through the outer edge of the first pulley, the arm tail cable passes through the lower first transition wheel, the second pulley and the upper first transition wheel in sequence, the upper end of the bracket lifting arm cable passes through the upper second transition wheel, the third pulley and the lower second transition wheel in sequence, and the lower end of the bracket lifting arm cable passes through the outer edges of the third transition wheel and the fourth pulley in sequence.

[0016] The utility model provides a kind of high-altitude operation platform car leveling device with anti-tipping mechanism, to improve the safety and stability of high-altitude operation.The device integrates leveling mechanism and innovative anti-tipping mechanism, and leveling mechanism is realized flexible posture adjustment of operation platform by multi-stage hinged arm structure of turntable, lower arm, upper arm, lifting arm and bracket.The anti-tipping mechanism forms stable hinged connection system by close cooperation of lower arm pull rod, upper arm pull rod and turntable lower arm cable, arm tail cable and bracket lifting arm cable, can quickly provide a pulling force opposite to the tipping direction for operation platform, effectively offsets the influence of external moment, so as to ensure the stability and safety of operation platform.

[0017] In addition, the anti-tipping mechanism in the application is compact in structure and light in weight, suitable for narrow space operation, and has strong universality, which can be widely applied to various folding arm type aerial work vehicles, reduces production cost and improves device utilization. In short, the leveling device of the application brings revolutionary progress to the field of high-altitude operation, and ensures the safety of the operator. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic diagram of the leveling device of the high-altitude operation platform car with anti-tipping mechanism.

[0019] Figure 2 is a structural schematic diagram of the anti-tipping mechanism in the application.

[0020] Figure 3 is a local enlarged structural schematic diagram of the first connecting piece in the application.

[0021] As shown in the figure: 1, turntable, 2, lower arm, 3, upper arm, 4, lifting arm, 5, bracket, 6, operation platform, 7, first hinged shaft, 8, second hinged shaft, 9, third hinged shaft, 10, fourth hinged shaft, 11, lower arm pull rod, 12, upper arm pull rod, 13, turntable lower arm cable, 14, arm tail cable, 15, bracket lifting arm cable, 16, first connecting piece, 17, second connecting piece, 18, third connecting piece, 19, fourth connecting piece, 20, connecting block, 21, left connecting screw, 22, right connecting screw, 23, left locking nut, 24, right locking nut, 25, first pulley, 26, second pulley, 27, third pulley, 28, fourth pulley, 29, first transition wheel, 30, second transition wheel, 31, third transition wheel. DETAILED DESCRIPTION

[0022] The utility model will be further described in detail below with reference to the drawings.

[0023] The specific implementation mode of the utility model will be further described below with reference to the drawings. Wherein, same parts are indicated by same reference numerals.

[0024] It should be noted that the words "front", "back", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "inner" and "outer" refer to the directions towards or away from the geometric center of a particular component.

[0025] In order to make the content of the utility model more easily and clearly understood, the technical solutions in the utility model embodiments will be clearly and completely described below in combination with the drawings in the utility model embodiments.

[0026] Referring to the drawings Figure 1 - the drawings Figure 3 A high-altitude operation platform truck leveling device with an anti-rollover mechanism, comprising:

[0027] The leveling mechanism comprises a rotating platform 1, a lower arm 2, an upper arm 3, a lifting arm 4, a bracket 5, and a work platform 6. One end of the lower arm 2 is rotatably connected to the rotating platform 1 through a first hinged shaft 7, and the end of the lower arm 2 away from the rotating platform 1 is rotatably connected to the upper arm 3 through a second hinged shaft 8. The end of the upper arm 3 away from the lower arm 2 is rotatably connected to the lifting arm 4 through a third hinged shaft 9, and the end of the lifting arm 4 away from the upper arm 3 is rotatably connected to the bracket 5 through a fourth hinged shaft 10. The work platform 6 is fixed to the bracket 5.

[0028] The anti-rollover mechanism comprises a lower arm pull rod 11 and an upper arm pull rod 12. The lower arm pull rod 11 is arranged above the lower arm 2, and one end thereof is fixed to the inside of the rotating platform 1 through a rotating platform lower arm cable 13. The upper arm pull rod 12 is arranged above the upper arm 3 and is connected to the lower arm pull rod 11 through an arm tail cable 14. The end of the upper arm pull rod 12 away from the arm tail cable 14 is provided with a bracket lifting arm cable 15, which is arranged on the lifting arm 4 and is fixed to the bottom of the bracket 5.

[0029] In a high-altitude operation platform truck leveling device with an anti-rollover mechanism, in order to ensure the stable connection between the components, especially the connection between the upper arm pull rod 12 and the lower arm pull rod 11 and the corresponding cables, the connection mode of the upper arm pull rod 12 and the lower arm pull rod 11 is designed in detail in this embodiment. Specifically, the two ends of the upper arm pull rod 12 are respectively connected to the bracket lifting arm cable 15 and the arm tail cable 14 through a first connecting piece 16 and a second connecting piece 17 to realize reliable connection, and the two ends of the lower arm pull rod 11 are firmly connected to the rotating platform lower arm cable 13 and the arm tail cable 14 through a third connecting piece 18 and a fourth connecting piece 19. This design not only enhances the stability of the structure, but also facilitates maintenance and replacement in the later stage.

[0030] Further, on the basis of the above-mentioned embodiments, the present embodiment describes the specific structure of the first connecting piece 16, the second connecting piece 17, the third connecting piece 18 and the fourth connecting piece 19 in detail. These connecting pieces all include a connecting block 20, and a left connecting screw 21 and a right connecting screw 22 respectively threadedly connected at both ends of the connecting block 20. In particular, the left connecting screw 21 adopts M10 specification, while the right connecting screw 22 adopts M16 specification, which not only ensures the strength of the connection, but also facilitates the distinction and installation. In addition, each connecting piece is tightly attached to the left and right ends of the connecting block 20 through a left locking nut 23 and a right locking nut 24 respectively, so as to realize the double locking of the cable and the pull rod, and further improve the stability of the overall structure.

[0031] The left connecting screw 21 in the first connecting piece 16 is fixed with the upper end of the bracket lifting arm cable 15, and the right connecting screw 22 in the first connecting piece 16 is fixed with the left end of the upper arm pull rod 12;

[0032] The left connecting screw 21 in the second connecting piece 17 is fixed with the right end of the upper arm pull rod 12, and the right connecting screw 22 in the second connecting piece 17 is fixed with the upper end of the arm tail cable 14;

[0033] The left connecting screw 21 in the third connecting piece 18 is fixed with the upper end of the turntable lower arm cable 13, and the right connecting screw 22 in the third connecting piece 18 is fixed with the left end of the lower arm pull rod 11;

[0034] The left connecting screw 21 in the fourth connecting piece 19 is fixed with the right end of the lower arm pull rod 11, and the right connecting screw 22 in the fourth connecting piece 19 is fixed with the lower end of the arm tail cable 14.

[0035] In order to optimize the arrangement of the cable, reduce friction and wear, and ensure that the cable can smoothly transmit the tension, the guide of the cable is carefully designed in the embodiment. The first pulley 25, the second pulley 26, the third pulley 27 and the fourth pulley 28 are arranged on the first hinged shaft 7, the second hinged shaft 8, the third hinged shaft 9 and the fourth hinged shaft 10 respectively for guiding the running direction of the cable. In addition, the first transition wheel 29 is additionally arranged above and below the second pulley 26, the second transition wheel 30 is additionally arranged on both sides of the third pulley 27, and the third transition wheel 31 is additionally arranged above the fourth pulley 28; the lower end of the turntable lower arm cable 13 passes through the outer edge of the first pulley 25, the tail arm cable 14 passes through the outer edge of the lower first transition wheel 29, the second pulley 26 and the upper first transition wheel 29 in turn, the upper end of the bracket lifting arm cable 15 passes through the outer edge of the upper second transition wheel 30, the third pulley 27 and the lower second transition wheel 30 in turn, and the lower end of the bracket lifting arm cable 15 passes through the outer edge of the third transition wheel 31 and the fourth pulley 28. The arrangement of these transition wheels enables the bracket lifting arm cable 15 and the tail arm cable 14 to smoothly bypass the pulleys and transition wheels according to the predetermined path, thereby effectively transmitting the tension and ensuring the normal operation of the anti-rollover mechanism.

[0036] Working principle: When the work platform 6 is working at a high altitude and is at risk of rolling over due to a moment opposite to gravity, the anti-rollover mechanism immediately comes into play. Through the close combination of the three-section cable (the turntable lower arm cable 13, the tail arm cable 14 and the bracket lifting arm cable 15) and the tension rod structure (the upper arm tension rod 12 and the lower arm tension rod 11), a stable hinged connection system is formed. This system can quickly provide a tension opposite to the rolling direction for the work platform 6, effectively offsetting the influence of external moments, thereby ensuring the stability and safety of the work platform 6. In addition, since the cable and the tension rod are carefully designed and arranged, the entire anti-rollover mechanism not only has a compact structure and light weight, but also has high reliability and durability, and is suitable for various complex high-altitude working environments.

[0037] The above describes the utility model and its implementation, which is not limited, and the drawings only show one of the embodiments of the utility model, and the actual structure is not limited. In general, if a person skilled in the art is inspired, without departing from the purpose of the utility model, without creative design, similar structure and embodiments of the technical solution should belong to the protection scope of the utility model.

Claims

1. An aerial work platform truck leveling device having an anti-rollover mechanism, comprising: The leveling mechanism comprises a rotating platform (1), a lower arm (2), an upper arm (3), a lifting arm (4), a bracket (5), and a working platform (6), one end of the lower arm (2) is rotatably connected with the rotating platform (1) through a first hinged shaft (7), the end of the lower arm (2) away from the rotating platform (1) is rotatably connected with the upper arm (3) through a second hinged shaft (8), the end of the upper arm (3) away from the lower arm (2) is rotatably connected with the lifting arm (4) through a third hinged shaft (9), the end of the lifting arm (4) away from the upper arm (3) is rotatably connected with the bracket (5) through a fourth hinged shaft (10), and the working platform (6) is fixed to the bracket (5); The anti-rollover mechanism comprises a lower arm pull rod (11) and an upper arm pull rod (12), the lower arm pull rod (11) is arranged above the lower arm (2), one end of the lower arm pull rod (11) is fixed to the inside of the rotating platform (1) through a rotating platform lower arm pull cable (13), the upper arm pull rod (12) is arranged above the upper arm (3) and is connected with the lower arm pull rod (11) through an arm tail pull cable (14), and the end of the upper arm pull rod (12) away from the arm tail pull cable (14) is provided with a bracket lifting arm pull cable (15), the bracket lifting arm pull cable (15) is arranged on the lifting arm (4) and is fixed to the bottom of the bracket (5). The two ends of the upper arm pull rod (12) are connected with the bracket lifting arm pull cable (15) and the arm tail pull cable (14) through a first connecting piece (16) and a second connecting piece (17) respectively, and the two ends of the lower arm pull rod (11) are connected with the rotating platform lower arm pull cable (13) and the arm tail pull cable (14) through a third connecting piece (18) and a fourth connecting piece (19) respectively.

2. The leveling device of the aerial work platform truck with anti-rollover mechanism according to claim 1, characterized in that, 3. The leveling device of the aerial work platform truck with the anti-rollover mechanism according to claim 2, wherein The first connecting piece (16), the second connecting piece (17), the third connecting piece (18) and the fourth connecting piece (19) each comprise a connecting block (20), a left connecting screw rod (21) and a right connecting screw rod (22), the connecting block (20) is provided with a left threaded hole and a right threaded hole at two ends thereof, and the left connecting screw rod (21) and the right connecting screw rod (22) are threadedly connected in the left threaded hole and the right threaded hole respectively; The left connecting screw rod (21) in the first connecting piece (16) is fixed to the upper end of the bracket lifting arm pull cable (15), and the right connecting screw rod (22) in the first connecting piece (16) is fixed to the left end of the upper arm pull rod (12); The left connecting screw rod (21) in the second connecting piece (17) is fixed to the right end of the upper arm pull rod (12), and the right connecting screw rod (22) in the second connecting piece (17) is fixed to the upper end of the arm tail pull cable (14); The left connecting screw rod (21) in the third connecting piece (18) is fixed to the upper end of the rotating platform lower arm pull cable (13), and the right connecting screw rod (22) in the third connecting piece (18) is fixed to the left end of the lower arm pull rod (11); The left connecting screw rod (21) in the fourth connecting piece (19) is fixed to the right end of the lower arm pull rod (11), and the right connecting screw rod (22) in the fourth connecting piece (19) is fixed to the lower end of the arm tail pull cable (14). ​ 4. The levelling device of the aerial platform truck with anti-tilt mechanism according to claim 3, characterized in that, The left connecting screw rod (21) is threadedly connected with a left locking nut (23) close to the left end of the connecting block (20), and the right connecting screw rod (22) is threadedly connected with a right locking nut (24) close to the right end of the connecting block (20).

5. The levelling device of the aerial platform truck with anti-tilt mechanism according to claim 1, characterized in that, The first, second, third and fourth articulated shafts (7, 8, 9 and 10) are respectively provided with first, second, third and fourth pulleys (25, 26, 27 and 28), the second pulley (26) is provided with first transition pulleys (29) above and below, the third pulley (27) is provided with second transition pulleys (30) on both sides, and the fourth pulley (28) is provided with a third transition pulley (31) above. The turntable lower arm cable (13) passes through the outer edge of the first pulley (25), the arm tail cable (14) passes through the lower first transition pulley (29), the second pulley (26) and the upper first transition pulley (29) in sequence, the upper end of the bracket lifting arm cable (15) passes through the upper second transition pulley (30), the third pulley (27) and the lower second transition pulley (30) in sequence, and the lower end of the bracket lifting arm cable (15) passes through the third transition pulley (31) and the outer edge of the fourth pulley (28).

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