A mast-type aerial work platform with a fall protection structure

Abstract

This utility model relates to the technical field of mast-type aerial work platforms, specifically to a mast-type aerial work platform with a fall protection structure. It includes a chassis, a turntable, a housing, a mast, a swing arm, and a work bucket. The mast has multiple stages; the primary mast is fixedly connected to the turntable, and the final mast is hinged to the swing arm. Each stage of the mast is driven by a chain. The fall protection structure is located inside the mast and includes multiple steel wire ropes. One end of the first steel wire rope is fixedly connected to the upper end of the primary mast, and the other end passes over the top of the second-stage mast and is fixedly connected to the bottom of the third-stage mast. One end of the second steel wire rope is fixedly connected to the upper end of the second-stage mast, and the other end passes over the top of the third-stage mast and is fixedly connected to the bottom of the fourth-stage mast. Subsequent steel wire ropes follow the same principle. This utility model effectively prevents the mast from falling when the chain breaks, further improving the operational safety of the mast-type aerial work platform.

Description

Technical Field

[0001] This utility model relates to the technical field of mast-type aerial work platforms, specifically to a mast-type aerial work platform with a fall protection structure. Background Technology

[0002] As a type of aerial work platform, the mast-type aerial work platform is characterized by its small size, low noise, light weight, and simple operation. It can meet the low-height high-altitude operation needs of general small and medium-sized enterprises and institutions, and is therefore highly favored.

[0003] Safety is paramount during high-altitude operations. Existing mast-type aerial work platforms use multi-stage chain transmissions between masts. Each stage of the chain is a separate segment, and there are usually two chains in the same stage. This transmission structure is relatively safe. During use, even if one chain in a stage breaks, the remaining chain can still act as a buffer. Only when both chains in the same stage break will the mast fall. If the broken chain is not the first stage chain, the mast behind that stage will not fall directly to the ground, thus providing some cushioning. However, it is undeniable that if the entire first stage chain breaks, all subsequent masts will fail and fall, still posing a significant safety hazard.

[0004] Therefore, this utility model proposes a mast-type aerial work platform with a fall-prevention structure, in which fall-prevention steel wire ropes are installed between each level of the mast, further improving the safety of the mast-type aerial work platform. This is of great significance for ensuring operational safety and the safety of the lives and property of the workers. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of the existing technology by providing a mast-type aerial work platform with a fall protection structure, thereby further improving the operational safety of the mast-type aerial work platform.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a mast-type aerial work platform with a fall protection structure, comprising a chassis, a turntable, a housing, a mast, a swing arm, and a work bucket. The mast has multiple stages, with the primary mast fixedly connected to the turntable, the final mast hinged to the swing arm, and adjacent mast stages slidingly limited to each other. The mast stages are connected by chain drive. The fall protection structure is located inside the mast and includes multiple sections of wire rope. One end of the first section of wire rope is fixedly connected to the upper end of the primary mast, and the other end of the first section of wire rope passes over the top of the second mast and is fixedly connected to the bottom of the third mast. One end of the second section of wire rope is fixedly connected to the upper end of the second mast, and the other end of the second section of wire rope passes over the top of the third mast and is fixedly connected to the bottom of the fourth mast. Subsequent sections of wire rope follow the same principle.

[0007] Furthermore, in addition to the primary mast and the final mast, pulleys are installed above each of the other masts. When the steel wire rope passes over the corresponding mast, it cooperates with the pulley above the corresponding mast.

[0008] Furthermore, the pulley also works in conjunction with the chain.

[0009] Furthermore, the pulley is provided with a wire rope groove and a chain groove, the wire rope groove cooperating with the wire rope, and the chain groove cooperating with the chain.

[0010] Furthermore, on masts with pulleys, there are two pulleys respectively; the pulleys on adjacent masts are arranged alternately in space.

[0011] Furthermore, on the second-level mast, pulleys are symmetrically arranged on both sides of the upper part inside the second-level mast; on the third-level mast, pulleys are symmetrically arranged in the middle of the upper part inside the third-level mast, and so on.

[0012] The beneficial effects of this utility model are: This utility model can effectively prevent the fall of each level of the mast when the chain breaks, thereby further improving the safety of mast-type aerial work platform vehicles. Attached Figure Description

[0013] Figure 1 This is the main view of the utility model (closed state);

[0014] Figure 2 This is a left view of the present invention (in its folded state);

[0015] Figure 3 This is the main view of the utility model (in unfolded state);

[0016] Figure 4 This is the left view of the present invention (in unfolded state);

[0017] Figure 5 This is a utility model Figure 4 A magnified view of part A in the middle;

[0018] Figure 6 This is a utility model Figure 4 A magnified view of part B in the middle section;

[0019] Figure 7 This is a utility model Figure 4 A magnified view of part C in the middle;

[0020] Figure 8 This is a diagram showing the connection relationship between the first mast and the second mast of this utility model;

[0021] Figure 9 This is a diagram showing the connection relationship between the third and fourth masts of this utility model.

[0022] The names corresponding to each mark in the diagram:

[0023] 1. Chassis; 11. Forklift hole; 2. Track; 3. Turntable; 4. Engine box; 41. Battery box; 42. Power unit; 5. Mast; 51. First mast; 52. Second mast; 53. Third mast; 54. Fourth mast; 55. Fifth mast; 56. Hydraulic cylinder; 561. Cylinder body; 562. Piston rod; 57. Pulley; 571. Chain track; 572. Wire rope track; 58. Chain; 59. Wire rope; 6. Swing arm; 7. Work bucket. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0025] Embodiments of this utility model:

[0026] like Figure 1-2 As shown, the mast-type aerial work platform vehicle in this embodiment includes a chassis 1, on which a forklift hole 11 is provided, and tracks 2 are installed on both sides of the chassis 1. A turntable 3 is installed on the chassis 1, and a housing 4 and a mast 5 are fixedly installed on the turntable 3. The housing 4 includes a battery box 41 and a power unit 42. The mast 5 has multiple stages, with the final stage mast hinged to a swing arm 6, and the swing arm 6 hinged to a work bucket 7. In this embodiment, the power unit 42 is a hydraulic pump.

[0027] like Figure 3-9As shown, the mast 5 includes multiple stages. In this embodiment, it is provided with a first mast 51, a second mast 52, a third mast 53, a fourth mast 54, and a fifth mast 55, for a total of five stages. The masts are slidably connected to each other (this is a mature existing technology, and this utility model does not improve upon it, so it will not be described further). The first mast 51 is fixedly connected to the turntable 3. A hydraulic cylinder 56 is provided at the first mast 51. The hydraulic cylinder 56 is vertically arranged and includes a cylinder body 561 and a piston rod 562. The cylinder body 561 is fixedly connected to the turntable 3, and the piston rod 562 is drivenly connected to the upper part of the second mast 52.

[0028] Two pulleys 57 are provided on both sides above the second mast 52. Each pulley 57 includes a chain groove 571 and a wire rope groove 572. A first chain 58 is installed through the chain groove 571, and a first wire rope 59 is installed through the wire rope groove 572. One end of each of the two first chains 58 is fixedly connected to both sides of the upper end of the first mast 51, and the other end of each of the two first chains 58 passes around the pulleys 57 and is fixedly connected to both sides of the lower end of the third mast 53. One end of each of the two first wire ropes 59 is fixedly connected to both sides of the upper end of the first mast 51, and the other end of each of the two first wire ropes 59 passes around the pulleys 57 and is fixedly connected to both sides of the lower end of the third mast 53.

[0029] Two pulleys 57 are centrally located above the third mast 53. Each pulley 57 includes a chain groove 571 and a wire rope groove 572. A second chain 58 is installed through the chain groove 571, and a second wire rope 59 is installed through the wire rope groove 572. One end of each of the two second chains 58 is fixedly connected to the middle of the upper end of the second mast 52, and the other end of each of the two second chains 58 passes around the pulleys 57 and is fixedly connected to the middle of the lower end of the fourth mast 54. One end of each of the two second wire ropes 59 is fixedly connected to the middle of the upper end of the second mast 52, and the other end of each of the two second wire ropes 59 passes around the pulleys 57 and is fixedly connected to the middle of the lower end of the fourth mast 54.

[0030] Two pulleys 57 are installed on both sides above the fourth mast 54. Each pulley 57 includes a chain groove 571 and a wire rope groove 572. A third chain 58 is installed through the chain groove 571, and a third wire rope 59 is installed through the wire rope groove 572. One end of each of the two third chains 58 is fixedly connected to both sides of the upper end of the third mast 53, and the other end of each of the two third chains 58 passes around the pulleys 57 and is fixedly connected to both sides of the lower end of the fifth mast 55. One end of each of the two third wire ropes 59 is fixedly connected to both sides of the upper end of the third mast 53, and the other end of each of the two third wire ropes 59 passes around the pulleys 57 and is fixedly connected to both sides of the lower end of the fifth mast 55.

[0031] The above details the connection methods of the chains 58 and wire ropes 59 between the masts. The chains 58 and wire ropes 59 are arranged alternately on both sides and in the center, which is intended to achieve a reasonable spatial arrangement and avoid spatial interference. In addition, since the masts are multi-stage, if further installation is required, the above steps can be followed sequentially, which is easy for those skilled in the art to understand and will not be elaborated further. As for other structures not mentioned in this embodiment, such as the swing arm 6 and the work bucket 7, these are existing mature technologies and have been disclosed by the applicant in the past, and will not be elaborated further.

[0032] The principle of this utility model is as follows:

[0033] During use, this utility model is safer and more stable due to the anti-fall structure, which plays a positive role in ensuring operational safety and the personal safety of workers.

[0034] During the transfer, the equipment can be transferred to a transport vehicle using a forklift with forklift hole 11, then transferred to the location of use using the transport vehicle, and finally lowered to the ground using a forklift with forklift hole 11. On the ground, the position can be adjusted using the control panel on the chassis 4 or the remote control (this process has been disclosed before and will not be described again). At this time, the operator enters the work bucket 7 and can control the mast 5 to rise, thus achieving high-altitude operation.

[0035] During the ascent of mast 5, hydraulic cylinder 56 or piston rod 562 moves upward, thus pushing the second mast 52 upward. When the second mast 52 moves upward, due to the arrangement of the first chain 58, the third mast 53 is pulled upward. When the third mast 53 moves upward, due to the arrangement of the second chain 58, and since the length of the second chain 58 does not change, the fourth mast 54 is pulled upward. When the fourth mast 54 moves upward, due to the arrangement of the third chain 58, and since the length of the third chain 58 does not change, the fifth mast 55 is pulled upward. This achieves a synchronous ascent or descent process. Through the above explanation, those skilled in the art should be able to understand the transmission mechanism of the mast. Moreover, the above mechanism is a mature technology in this field and will not be elaborated further.

[0036] During the ascent or descent of the mast, the present invention is equipped with a fall prevention structure that operates synchronously, that is, the fall prevention wire rope 59 operates synchronously. Therefore, in the event of a breakage of the chain 58, the wire rope 59 can serve as a protective measure to effectively prevent the mast 5 from falling, thus playing a positive and effective role in ensuring operational safety.

Claims

1. A mast-type aerial work platform with a fall protection structure, comprising a chassis, a turntable, a housing, a mast, a swing arm, and a work bucket. The mast has multiple stages, with the primary mast fixedly connected to the turntable, the final mast hinged to the swing arm, adjacent mast stages slidingly limited to each other, and the mast stages connected by chain drive. Its characteristic feature is that: The aforementioned fall arrestor structure is installed inside the mast. The fall arrestor structure includes multiple sections of steel wire rope. One end of the first section of steel wire rope is fixedly connected to the upper end of the primary mast, and the other end of the first section of steel wire rope passes over the top of the second mast and is fixedly connected to the bottom of the third mast. One end of the second section of steel wire rope is fixedly connected to the upper end of the second mast, and the other end of the second section of steel wire rope passes over the top of the third mast and is fixedly connected to the bottom of the fourth mast. Subsequent sections of steel wire rope follow the same principle.

2. The pole-type aerial platform vehicle with a falling protection structure according to claim 1, characterized in that: The various levels of masts, excluding the primary mast and the final mast, are equipped with pulleys above each other. When the steel wire rope passes over the corresponding mast, it cooperates with the pulley above the corresponding mast.

3. The pole-type aerial platform vehicle with a falling protection structure according to claim 2, characterized in that: The pulley also works in conjunction with the chain.

4. The pole-type aerial platform vehicle with a falling protection structure according to claim 3, characterized in that: The pulley is provided with a wire rope groove and a chain groove, the wire rope groove cooperating with the wire rope, and the chain groove cooperating with the chain.

5. A mast-type aerial work platform with a fall protection structure according to claim 2, characterized in that: On masts with pulleys, there are two pulleys in total; the pulleys on adjacent masts are arranged alternately in space.

6. The pole-type aerial lift vehicle with a falling protection structure according to claim 5, characterized in that: On the second-level mast, pulleys are symmetrically arranged on both sides of the upper part of the interior of the second-level mast; on the third-level mast, pulleys are symmetrically arranged in the middle of the upper part of the interior of the third-level mast, and so on.

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