A straight-arm type dual-mode dual-load aerial work platform

Abstract

The utility model discloses a straight arm formula dual mode dual load aerial work platform, including the fixed installation in the chassis frame top one side's limit frame, the fixed installation in the chassis frame four corner position's stay mechanism, the rotating platform is rotationally installed on the chassis frame, the lifting arm is connected and installed to the rotating platform top, the lifting arm end is installed with the straight arm connecting frame of auxiliary turnover, the telescopic arm is turned over and installed on the straight arm connecting frame, the work platform is connected and installed to telescopic arm end, one side fixed mounting of chassis frame has the bearing frame, the bearing frame bottom fixed mounting has the bearing plate, and the bearing plate top fixed mounting has the locating seat, the oil cylinder is fixedly installed with two sets of limit rods for locking and limiting the work platform to the oil cylinder end, and the oil cylinder is fixedly installed with two sets of limit rods for locking and limiting the work platform. The utility model carries out the location to the work platform, guarantees the stability of work platform.

Description

Technical Field

[0001] This utility model belongs to the technical field of aerial work platforms, specifically relating to a straight boom dual-mode dual-load aerial work platform. Background Technology

[0002] Aerial work platforms are mobile work platforms used in various industries for high-altitude operations, equipment installation, maintenance, and other tasks. The main product categories include: scissor lifts, trailer-mounted aerial work platforms, articulated boom lifts, telescopic boom lifts, aluminum alloy aerial work platforms, telescopic cylinder lifts, and spider lifts.

[0003] A domestic utility model patent with application number CN202410827763.7 discloses a dual-mode aerial work platform and its working method. The dual-mode aerial work platform includes: a chassis, mounted on top of a mobile vehicle; a lifting mechanism, the bottom of which is connected to the chassis, and the top of which is connected to the work platform body; a first height limit triggering component, mounted on the chassis, which triggers the first height limit triggering component and generates a first trigger signal when the lifting mechanism lifts the work platform body to the first limit height; and a second height limit triggering component, mounted on the chassis. This embodiment of the dual-mode aerial work platform adopts both indoor and outdoor working modes, and sets two different limit heights according to the indoor and outdoor working modes, ensuring the safety of the aerial work platform when working outdoors and improving the utilization rate of the aerial work platform when working indoors. The aforementioned invention patent describes two working modes, while this utility model describes an aerial work platform with two walking modes. During normal operation, the normal walking mode can be used. When the aerial work platform needs to be moved quickly after the operation is completed, the high-speed walking mode needs to be used. In the high-speed walking mode, the straight boom of the aerial work platform needs to be retracted during the movement, otherwise it will affect the stability of the aerial work platform. However, the high-speed movement will also affect the work platform, and the greater wind resistance will affect the safety of the personnel controlling the work platform. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a straight boom dual-mode dual-load aerial work platform, comprising a chassis frame and walking tracks installed on both sides of the bottom of the chassis frame. It also includes a limiting frame fixedly installed on one side of the top of the chassis frame and parking mechanisms fixedly installed at the four corners of the chassis frame. A rotating platform is rotatably mounted on the chassis frame, and a lifting arm is connected to the top of the rotating platform. A straight boom connecting frame for auxiliary tilting is installed at the end of the lifting arm. A telescopic arm is tilted and installed on the straight boom connecting frame, and a working platform is connected to the end of the telescopic arm. A bearing frame is fixedly mounted on one side of the chassis frame, and a bearing plate is fixedly mounted at the bottom of the bearing frame, with a positioning seat fixedly mounted on the top of the bearing plate. A hydraulic cylinder is fixedly mounted on the side of the chassis frame at the location of the bearing frame, and two sets of limiting rods for locking and limiting the working platform are fixedly mounted at the end of the hydraulic cylinder.

[0005] As a further preferred technical solution of this utility model; a platform chassis is fixedly installed at the bottom of the working platform, a connecting arm is connected to the end of the telescopic arm, and an adjusting arm is flipped and connected to one end of the connecting arm, and the bottom of the adjusting arm is connected to the platform chassis through a connecting part.

[0006] The lifting arm, telescopic arm, and connecting arm are controlled and adjusted by the cooperation of hydraulic cylinders, so that the work platform can be moved to the designated position for operation.

[0007] As a further preferred technical solution of this utility model; the top of the bearing plate and the bottom of the positioning seat are fixedly installed by a shock-absorbing spring group, two sets of limiting grooves are opened on the side of the platform chassis, a connecting ring frame is fixedly installed on the pushing end of the oil cylinder, and the connecting ring frame and the limiting rod are connected and installed by a welding rod.

[0008] The connecting ring frame is moved to the limit rod by the hydraulic cylinder and the shock-absorbing spring assembly is fixedly installed at the bottom of the positioning seat to achieve the shock absorption effect of the working platform.

[0009] As a further preferred technical solution of this utility model, the limiting frame is provided with a positioning groove for storing the lifting arm, and the bottom of the rotating platform is fixedly installed with the output end of the servo motor fixedly installed inside the chassis frame.

[0010] Retracting the boom and telescopic boom effectively lowers the center of gravity of the aerial work platform, making it more resistant to uneven ground and bumps. It also reduces tipping moments, preventing dynamic impacts and even rollovers.

[0011] As a further preferred technical solution of this utility model, the parking mechanism includes a mounting bracket fixedly installed on the side of the chassis frame, a partition plate fixedly installed on the mounting bracket, and a parking screw threaded through the partition plate, with a parking block fixedly installed at the bottom of the parking screw.

[0012] When the aerial work platform is in a fixed position, the position of the parking block is adjusted by rotating the parking screw, so that the parking block makes full contact with the ground to achieve a friction effect, thereby ensuring the stability of the chassis frame of the aerial work platform during operation. Beneficial effects

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. When starting the high-speed travel mode of this aerial work platform, the lifting arm and telescopic arm need to be retracted. During the retraction process, the lifting arm is locked in the positioning groove to ensure the stability of the lifting arm and reduce the steering pressure and crushing wear on the components of the lifting arm caused by the steering sway during high-speed movement. At the same time, it also reduces the wear between the end of the lifting arm and the top of the rotating platform. 2. During the retraction of the lifting arm, the position of the work platform needs to be adjusted synchronously so that the work platform is retracted to the top of the positioning seat for limitation. The hydraulic cylinder pushes the connecting ring frame to move the limiting rod into the limiting groove to ensure the limitation of the work platform and reduce wind resistance to ensure the stability of the work platform. At the same time, a shock-absorbing spring assembly is fixedly installed at the bottom of the positioning seat to achieve the shock absorption effect of the work platform. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the positioning seat of this utility model; Figure 3 This is a schematic diagram of the limiting and locking cross-sectional structure of the working platform of this utility model; Figure 4 This is a structural diagram of the platform chassis location of this utility model.

[0015] In the diagram: 1. Chassis frame; 11. Limiting frame; 12. Positioning groove; 13. Bearing frame; 14. Bearing plate; 15. Positioning seat; 16. Shock-absorbing spring assembly; 17. Track; 2. Rotating platform; 21. Lifting arm; 22. Straight arm connecting frame; 23. Telescopic arm; 24. Connecting arm; 25. Adjusting arm; 3. Parking mechanism; 31. Mounting frame; 32. Partition plate; 33. Parking screw; 34. Parking block; 4. Working platform; 41. Platform chassis; 411. Limiting groove; 412. Connecting part; 5. Hydraulic cylinder; 51. Connecting ring frame; 52. Limiting rod; 53. Welding rod. Detailed Implementation

[0016] This specific implementation is a straight boom dual-mode dual-load aerial work platform.

[0017] The aforementioned invention patent describes two working modes, while this utility model describes an aerial work platform with two walking modes. During normal operation, the normal walking mode can be used. When the aerial work platform needs to be moved quickly after the operation is completed, the high-speed walking mode needs to be used. In the high-speed walking mode, the straight boom of the aerial work platform needs to be retracted during the movement, otherwise it will affect the stability of the aerial work platform. However, the high-speed movement will also affect the work platform, and the greater wind resistance will affect the safety of the personnel controlling the work platform.

[0018] Example 1: Its structural schematic diagram is as follows Figures 1-4 As shown. A straight boom dual-mode dual-load aerial work platform includes a chassis frame 1 and walking tracks 17 installed on both sides of the bottom of the chassis frame 1. It also includes a limiting frame 11 fixedly installed on one side of the top of the chassis frame 1 and parking mechanisms 3 fixedly installed at the four corners of the chassis frame 1. The parking mechanism 3 includes a mounting bracket 31 fixedly installed to the side of the chassis frame 1. A partition 32 is fixedly installed on the mounting bracket 31, and a parking screw 33 is threaded through the partition 32. A parking block 34 is fixedly installed at the bottom of the parking screw 33. When the aerial work platform is operating at a fixed point, the position of the parking block 34 is adjusted by rotating the parking screw 33, so that the parking block 34 makes full contact with the ground to achieve a friction effect, thereby ensuring the stability of the chassis frame 1 during the operation of the aerial work platform.

[0019] The limiting frame 11 has a positioning slot 12 for storing the lifting arm 21. The bottom of the rotating platform 2 is fixedly installed with the output end of the servo motor inside the chassis frame 1. The "dual mode" of the dual-mode straight boom aerial work platform mainly refers to two different walking modes. The core purpose of these two modes is to solve the problems of passability and mobility. During normal operation, the normal walking mode can be adopted, and the walking track 17 is driven by the drive motor inside the chassis frame 1 to achieve normal walking requirements. When the aerial work platform needs to be moved quickly after the operation, the lifting arm 21 and telescopic arm 23 on the top of the rotating platform 2 need to be retracted to ensure the stability of the aerial work platform in the other high-speed walking mode. Retracting the lifting arm 21 and telescopic arm 23 can effectively lower the center of gravity of the aerial work platform and effectively resist uneven ground and bumps. At the same time, it reduces the overturning moment and avoids dynamic impacts or even rollover.

[0020] A rotating platform 2 is mounted on the chassis frame 1 via a servo motor. A lifting arm 21 is connected to the top of the rotating platform 2 via a hydraulic cylinder. A straight arm connecting frame 22 for auxiliary tilting is mounted at the end of the lifting arm 21, and a telescopic arm 23 is tilted and mounted on the straight arm connecting frame 22. The tilting of the straight arm connecting frame 22 is electrically controlled by hydraulic rods at the bottom of the lifting arm 21 and inside the telescopic arm 23, as well as by an electrical control box inside the chassis frame 1. A work platform 4 is connected and mounted at the end of the telescopic arm 23. A platform chassis 41 is fixedly mounted at the bottom of the work platform 4. A connecting arm 24 is connected and mounted at the end of the telescopic arm 23, and an adjusting arm 25 is tilted and mounted at one end of the connecting arm 24. The bottom of the adjusting arm 25 is connected and mounted to the platform chassis 41 via a connecting part 412. The lifting arm 21, telescopic arm 23, and connecting arm 24 are controlled and adjusted by the cooperation of the hydraulic cylinders, so that the work platform 4 moves to the designated position for operation. A support frame 13 is fixedly installed on one side of the chassis frame 1. A support plate 14 is fixedly installed at the bottom of the support frame 13, and a positioning seat 15 is fixedly installed on the top of the support plate 14. A hydraulic cylinder 5 is fixedly installed on the side of the chassis frame 1 at the position of the support frame 13, and two sets of limiting rods 52 for locking and limiting the work platform 4 are fixedly installed at the end of the hydraulic cylinder 5. The top of the support plate 14 and the bottom of the positioning seat 15 are fixedly installed by a shock-absorbing spring assembly 16. Two sets of limiting grooves 411 are opened on the side of the platform chassis 41. A connecting ring frame 51 is fixedly installed at the pushing end of the hydraulic cylinder 5. The connecting ring frame 51 and the limiting rods 52 are connected and installed by a welding rod 53. When activating the high-speed travel mode of the aerial work platform, the lifting arm 21 and telescopic arm 23 need to be retracted. During the retraction process, the lifting arm 21 is engaged and limited within the positioning groove 12 to ensure its stability and reduce the impact of steering sway during high-speed movement, which could cause steering pressure and wear on the components of the lifting arm 21. This also reduces wear between the end of the lifting arm 21 and the top of the rotating platform 2. During the retraction of the lifting arm 21, the position of the work platform 4 needs to be adjusted synchronously so that it is retracted to the top of the positioning seat 15 for limitation. The hydraulic cylinder 5 pushes the connecting ring frame 51 to move the limiting rod 52 into the limiting groove 411 to ensure the limitation of the work platform 4 and reduce wind resistance while maintaining its stability. At the same time, a shock-absorbing spring assembly 16 is fixedly installed at the bottom of the positioning seat 15 to achieve a shock absorption effect on the work platform 4.

[0021] When the aerial work platform is in stationary operation, the position of the parking block 34 is adjusted by rotating the parking screw 33, so that the parking block 34 makes full contact with the ground to achieve a friction effect, thereby ensuring the stability of the chassis frame 1 during the operation of the aerial work platform. When the high-speed travel mode of the aerial work platform is started, the lifting arm 21 and telescopic arm 23 need to be retracted. The lifting arm 21 is locked in the positioning groove 12 to ensure the stability of the lifting arm 21. At the same time, the position of the work platform 4 needs to be adjusted so that the work platform 4 is retracted to the top of the positioning seat 15 for limiting. The hydraulic cylinder 5 pushes the connecting ring frame 51 to move the limiting rod 52 into the limiting groove 411 to ensure the limiting of the work platform 4. In the process of reducing wind resistance, the stability of the work platform 4 is ensured. At the same time, the shock-absorbing spring group 16 is fixedly installed at the bottom of the positioning seat 15 to achieve the shock absorption effect of the work platform 4.

[0022] All technical features in this embodiment can be freely combined according to actual needs.

[0023] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A straight boom dual-mode dual-load aerial work platform, comprising a chassis frame (1) and walking tracks (17) mounted on both sides of the bottom of the chassis frame (1), characterized in that, It also includes a limiting frame (11) fixedly installed on one side of the top of the chassis frame (1), a parking mechanism (3) fixedly installed at the four corners of the chassis frame (1), a rotating platform (2) rotatably installed on the chassis frame (1), a lifting arm (21) connected to the top of the rotating platform (2), a straight arm connecting frame (22) for auxiliary flipping installed at the end of the lifting arm (21), a telescopic arm (23) flipped on the straight arm connecting frame (22), a working platform (4) connected to the end of the telescopic arm (23), a bearing frame (13) fixedly installed on one side of the chassis frame (1), a bearing plate (14) fixedly installed at the bottom of the bearing frame (13), and a positioning seat (15) fixedly installed on the top of the bearing plate (14). A hydraulic cylinder (5) is fixedly installed on the side of the chassis frame (1) at the position of the bearing frame (13), and two sets of limiting rods (52) for locking and limiting the working platform (4) are fixedly installed at the end of the hydraulic cylinder (5).

2. The straight boom dual-mode dual-load aerial work platform according to claim 1, characterized in that: The work platform (4) has a platform chassis (41) fixedly installed at the bottom. The telescopic arm (23) has a connecting arm (24) connected to the end. One end of the connecting arm (24) is flipped and connected to an adjusting arm (25). The bottom of the adjusting arm (25) is connected to the platform chassis (41) through a connecting part (412).

3. The straight boom dual-mode dual-load aerial work platform according to claim 2, characterized in that: The top of the bearing plate (14) and the bottom of the positioning seat (15) are fixedly installed by a shock-absorbing spring group (16). Two sets of limiting grooves (411) are opened on the side of the platform chassis (41). A connecting ring frame (51) is fixedly installed on the pushing end of the oil cylinder (5). The connecting ring frame (51) and the limiting rod (52) are connected and installed by a welding rod (53).

4. The straight boom dual-mode dual-load aerial work platform according to claim 1, characterized in that: The limiting frame (11) has a positioning groove (12) inside for storing the lifting arm (21), and the bottom of the rotating platform (2) is fixedly installed with the output end of the servo motor inside the chassis frame (1).

5. A straight boom dual-mode dual-load aerial work platform according to claim 1, characterized in that: The parking mechanism (3) includes a mounting bracket (31) fixedly installed on the side of the chassis frame (1), a partition (32) is fixedly installed on the mounting bracket (31), and a parking screw (33) is threaded through the partition (32), and a parking block (34) is fixedly installed at the bottom of the parking screw (33).

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