Multi-wheel steering folding arm crane chassis

Abstract

The utility model discloses a multi-wheel steering folding arm crane chassis, which belongs to the technical field of movable folding arm cranes and comprises a frame, and a folding arm crane mounting seat is mounted on the frame. First, second, third, fourth and fifth axles are mounted on the lower side of the frame; the first axle, the second axle, the fourth axle and the fifth axle are steering axles, and the third axle is a bearing axle; the axle distance between the first axle and the second axle is equal to the axle distance between the fourth axle and the fifth axle, and the axle distance between the first axle and the third axle is equal to the axle distance between the third axle and the fourth axle. A 10 * 4 driving mode is adopted, the bearing capacity is high, the design of the shorter vehicle chassis length can be achieved, the smaller turning radius can be achieved, the vehicle can be suitable for operation in a narrower space, and tire abrasion is reduced as much as possible during steering. The overall structure is simple, arrangement is compact, use is convenient, and practicability is good.

Description

Technical Field

[0001] This utility model belongs to the field of mobile articulated boom crane technology, specifically a multi-wheel steering articulated boom crane chassis. Background Technology

[0002] Knuckle boom cranes are flexible and efficient lifting equipment widely used in various industrial and engineering fields. Their main features include telescopic design and omnidirectional rotation capability.

[0003] Telescopic design: The boom of a knuckle boom crane can be extended and adjusted to adapt to different working environments and space constraints. This design allows the knuckle boom crane to perform lifting operations in confined spaces and can adjust the boom length as needed to meet the requirements of different working scenarios.

[0004] Full-range rotation capability: The design of the knuckle boom crane allows it to rotate 360 ​​degrees, and this all-around flexibility enables it to easily handle various complex working environments. Whether in confined spaces or in work scenarios requiring lateral movement, the knuckle boom crane demonstrates its excellent operational performance.

[0005] Knuckle boom cranes are special-purpose vehicles that mount a knuckle boom crane onto a vehicle chassis for easy and flexible movement. They are mainly used for equipment installation inside factories, hoisting equipment under high-voltage lines, and relocating equipment in confined spaces; they can also be used for hoisting operations outdoors. The compact structure and flexible operation of knuckle boom cranes allow them to operate in a wider range of fields, not only in traditional logistics and transportation, but also in municipal construction, fire protection, tire loading machinery, and pile extraction machines.

[0006] Existing mobile articulated boom cranes all use existing vehicle chassis. When operating in more confined spaces, traditional vehicle chassis cannot meet their requirements for flexible steering and movement. Utility Model Content

[0007] To address the issue that existing mobile articulated boom cranes, which all use existing vehicle chassis, cannot meet the requirements for flexible steering and movement when operating in confined spaces, this invention provides a multi-wheel steering articulated boom crane chassis.

[0008] This utility model is achieved through the following technical solution:

[0009] A multi-wheel steering articulated boom crane chassis includes a frame, on which an articulated boom crane mounting seat is installed for positioning and mounting the articulated boom crane; a first axle, a second axle, a third axle, a fourth axle, and a fifth axle are sequentially installed on the underside of the frame from front to rear; the first and second axles are steering axles, the third axle is a load-bearing axle, and the fourth and fifth axles are steering axles; and the wheelbase between the first and second axles is equal to the wheelbase between the fourth and fifth axles, and the wheelbase between the first and third axles is equal to the wheelbase between the third and fourth axles.

[0010] A further improvement of this utility model is that the first and second axles are mechanically controlled steering axles; and the fourth and fifth axles are electronically controlled steering axles.

[0011] A further improvement of this utility model is that the folding boom crane mounting base is located on the upper side of the fourth and fifth axles.

[0012] A further improvement of this utility model is that a front outrigger box is installed between the second and third axles, and a rear outrigger box is installed on the rear side of the fifth axle; the front and rear outrigger boxes are respectively provided with side outriggers that can extend to the left and right.

[0013] A further improvement of this utility model is that a tail support leg box is provided on the rear side of the frame, and a tail support leg that can extend backward is provided inside the tail support leg box.

[0014] A further improvement of this utility model is that the left and right corresponding side support legs are arranged in an alternating manner.

[0015] A further improvement of this utility model is that the first axle and the second axle are connected to the vehicle frame via a leaf spring suspension.

[0016] A further improvement of this utility model is that the third axle is connected to the vehicle frame via an air suspension.

[0017] A further improvement of this utility model is that the fourth and fifth axles are connected to the vehicle frame via rubber suspension.

[0018] A further improvement of this utility model is that vertical arc-shaped support plates are respectively connected to both sides of the two longitudinal beams of the frame, and vertical first side plates connected to the inner side of the support arc-shaped plates are connected at intervals in front and behind.

[0019] As can be seen from the above technical solutions, the beneficial effects of this utility model are:

[0020] Employing a 10x4 drive configuration, this vehicle boasts strong load-bearing capacity. The first, second, fourth, and fifth axles serve as steering axles, while the third axle acts as the load-bearing axle. Furthermore, the wheelbase between the first and second axles is equal to that between the fourth and fifth axles, and vice versa. This design allows for a shorter chassis length, a smaller turning radius, and suitability for operation in confined spaces, while minimizing tire wear (especially during steering). The overall structure is simple, compact, easy to use, and highly practical. Attached Figure Description

[0021] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0023] Figure 2 This is a side view of a specific embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the bottom structure of a specific embodiment of the present utility model.

[0025] Figure 4 This is a schematic diagram of the leaf spring suspension arrangement according to a specific embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of the air suspension arrangement in a specific embodiment of the present invention.

[0027] Figure 6 This is a schematic diagram of the rubber suspension arrangement in a specific embodiment of the present invention.

[0028] Figure 7 This is a schematic diagram showing the arrangement of the supporting arc-shaped plate and the second side plate in a specific embodiment of this utility model.

[0029] In the attached diagram: 1. Chassis; 2. First axle; 3. Second axle; 4. Third axle; 5. Fourth axle; 6. Fifth axle; 7. Knuckle boom mount; 8. Front outrigger box; 9. Rear outrigger box; 10. Tail outrigger box; 11. Support arc plate; 12. First side plate; 13. Second side plate; 14. Leaf spring suspension; 15. Air suspension; 16. Rubber suspension. Detailed Implementation

[0030] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0031] like Figure 1-7 As shown, this utility model discloses a multi-wheel steering articulated boom crane chassis, including a frame 1, on which an articulated boom crane mounting seat 7 is installed for positioning and mounting the articulated boom crane; a first axle 2, a second axle 3, a third axle 4, a fourth axle 5, and a fifth axle 6 are sequentially installed on the lower side of the frame 1 from front to back; the first axle 2 and the second axle 3 are steering axles, the third axle 4 is a load-bearing axle, and the fourth axle 5 and the fifth axle 6 are steering axles; and the wheelbase between the first axle 2 and the second axle 3 is equal to the wheelbase between the fourth axle 5 and the fifth axle 6, and the wheelbase between the first axle 2 and the third axle 4 is equal to the wheelbase between the third axle 4 and the fourth axle 5.

[0032] This articulated boom crane chassis adopts a 10x4 drive configuration, offering strong load-bearing capacity. It utilizes axles 2 (first axle), 3 (second axle), 5 (fourth axle), and 6 (fifth axle) as steering axles, and axle 4 (third axle) as the load-bearing axle. The wheelbase between axles 2 and 3 is equal to that between axles 5 and 6, and the wheelbase between axles 2 and 4 is equal to that between axles 4 and 5. This design allows for a shorter chassis length, a smaller turning radius, and suitability for operation in confined spaces, while minimizing tire wear (during turning). The overall structure is simple, compact, easy to use, and highly practical.

[0033] Because the chassis of this articulated boom crane has a relatively small wheelbase, the lower side of the frame 1 cannot accommodate the fuel tank and muffler. Therefore, the muffler and fuel tank are placed on the upper side of the frame 1 to make the arrangement more reasonable.

[0034] The front of this folding boom crane chassis uses a cab that reaches the top, ensuring the overall height of the vehicle does not exceed 3.3m and increasing its passability.

[0035] The wheelbase of this multi-wheel steering articulated boom crane chassis is 1350+2150+2150+1350 (mm), which allows the overall vehicle length to not exceed 10.5m and the turning radius to not exceed 9m (8.8m).

[0036] Furthermore, the first axle 2 and the second axle 3 are mechanically controlled steering axles; the fourth axle 5 and the fifth axle 6 are electronically controlled steering axles. This achieves the same steering parameters as all-wheel steering while eliminating the need for an additional electronic steering axle, resulting in lower costs.

[0037] The folding boom crane mounting base 7 is disc-shaped and located on the upper side of the fourth axle 5 and the fifth axle 6. This results in a more rational center of gravity arrangement for the entire vehicle, enhancing its stability during operation.

[0038] like Figure 1 , 2 As shown in Figures 3 and 7, a front outrigger box 8 is installed between the second axle 3 and the third axle 4 (under the frame 1), and a rear outrigger box 9 is installed on the rear side of the fifth axle 6 (under the frame 1). The front outrigger box 8 and the rear outrigger box 9 are respectively equipped with side outriggers that can extend to the left and right. By extending the side outriggers for support, stability and safety are achieved during use.

[0039] Furthermore, to improve stability and safety during use, two tail support leg boxes 10 are provided on the rear side of the frame 1, with tail support legs that can extend backward inside each tail support leg box 10. The two tail support legs, together with the four side support legs, provide stable and reliable support for the entire vehicle.

[0040] The side support legs are staggered, allowing for complete folding and a large support span, thus improving stability and safety during use.

[0041] The frame 1, front outrigger box 8, rear outrigger box 9, tail outrigger box 10, and disc-shaped folding arm crane mounting base 7 are integrated into one unit, which not only meets the overall strength and rigidity requirements, but also reduces the overall vehicle weight and lowers the overall center of gravity.

[0042] Among them, such as Figure 4 As shown, the first axle 2 and the second axle 3 are connected to the frame 1 via a leaf spring suspension 14. The first axle 2 and the second axle 3 employ a tandem leaf spring balance suspension, which ensures that the loads on the first and second axles remain equal or nearly equal even when there is a significant height difference between them. This guarantees that all tires bear the load evenly, reducing tire wear. The vehicle's braking force distribution is more even, improving the overall performance of the vehicle under harsh working conditions.

[0043] like Figure 5 As shown, the third axle 4 is connected to the frame 1 via the air suspension 15. The air suspension 15 generally requires no maintenance or has lower maintenance costs within 200,000 kilometers; the guide leaf springs are flexibly connected to the frame 1, reducing the need for tire replacement once a year; its excellent shock absorption performance effectively protects fragile items, electronic components, fluids, and other special transported goods; and it can lift the front axle when unloaded, reducing tire wear, lowering fuel consumption, and improving cornering performance.

[0044] like Figure 6As shown, the fourth axle 5 and the fifth axle 6 are connected to the frame 1 via a rubber suspension 16. The fourth axle 5 and the fifth axle 6 employ a rubber balance beam suspension. Rubber suspensions offer advantages such as light weight, maintenance-free operation, and good passability. Their vibration damping effect is superior to leaf springs and rigid balance suspensions. The combined rubber springs can simultaneously withstand vertical, lateral, and longitudinal loads. Furthermore, by adjusting the structure and hardness of the rubber springs, the suspension's ability to withstand three-dimensional forces can be adjusted, effectively improving tire wear, extending tire life, providing smooth braking without impact, and offering good steering stability. Simultaneously, the fourth and fifth axles can rotate around the balance axis to protect the axles and suspension system, thereby extending the chassis's lifespan.

[0045] The rational design and layout of the suspension system of this articulated boom crane chassis greatly improves the vehicle's ride comfort, operational stability, and passability.

[0046] like Figure 7 As shown, the frame 1 adopts a multi-box welded structure. Vertical arc-shaped support plates 11 are connected to both sides of the two longitudinal beams of the frame 1, and vertical first side plates 12, connected to the inner side of the support arc plates 11, are connected at intervals in front and behind. It also includes several vertical second side plates 13 connected to both sides of the longitudinal beams and spaced between adjacent first side plates 12, together providing reliable and stable support for the folding boom crane mounting base 7, and improving the strength and rigidity of the entire vehicle chassis.

[0047] This folding boom crane chassis is equipped with an emergency steering pump, which allows for easy steering and parking when the engine suddenly stalls. The first and second axles are traditional mechanical steering, while the fourth and fifth axles are electronic steering. At speeds below 25 km / h, the fourth and fifth axles rotate in the opposite direction to the first and second axles to achieve high passability and meet the needs of flexible operation in confined spaces. When traveling at high speeds, the fourth and fifth axles lock back to center to ensure safe driving.

[0048] This multi-wheel steering articulated boom crane chassis adopts a 10x4 drive configuration, offering strong load-bearing capacity. It utilizes axles 2 (first axle), 3 (second axle), 5 (fourth axle), and 6 (fifth axle) as steering axles, and axle 4 (third axle) as the load-bearing axle. The wheelbase between axles 2 and 3 is equal to that between axles 5 and 6, and the wheelbase between axles 2 and 4 is equal to that between axles 4 and 5. This design allows for a shorter chassis length, a smaller turning radius, and suitability for operation in confined spaces, while minimizing tire wear (during steering). The overall structure is simple, compact, easy to use, and highly practical.

[0049] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0050] The terms "upper," "lower," "outer," "inner," etc., used in the specification, claims, and accompanying drawings of this utility model, are used to distinguish relative positional relationships and are not necessarily qualitative. It should be understood that such data can be interchanged where appropriate so that embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0051] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-wheel steering articulated boom crane chassis, characterized in that, The vehicle includes a frame (1), on which a folding boom crane mounting seat (7) for positioning and mounting a folding boom crane is installed; the frame (1) is equipped with a first axle (2), a second axle (3), a third axle (4), a fourth axle (5) and a fifth axle (6) in sequence from front to back; the first axle (2) and the second axle (3) are steering axles, the third axle (4) is a load-bearing axle, and the fourth axle (5) and the fifth axle (6) are steering axles; and the wheelbase between the first axle (2) and the second axle (3) is equal to the wheelbase between the fourth axle (5) and the fifth axle (6), and the wheelbase between the first axle (2) and the third axle (4) is equal to the wheelbase between the third axle (4) and the fourth axle (5).

2. The multi-wheel steering articulated boom crane chassis according to claim 1, characterized in that, The first axle (2) and the second axle (3) are mechanically controlled steering axles; the fourth axle (5) and the fifth axle (6) are electronically controlled steering axles.

3. The multi-wheel steering articulated boom crane chassis according to claim 1, characterized in that, The folding boom crane mounting base (7) is located on the upper side of the fourth axle (5) and the fifth axle (6).

4. The multi-wheel steering articulated boom crane chassis according to claim 1, characterized in that, A front outrigger box (8) is installed between the second axle (3) and the third axle (4), and a rear outrigger box (9) is installed on the rear side of the fifth axle (6); the front outrigger box (8) and the rear outrigger box (9) are respectively provided with side outriggers that can extend to the left and right.

5. The multi-wheel steering articulated boom crane chassis according to claim 4, characterized in that, The rear side of the frame (1) is provided with a tail support box (10), and the tail support box (10) is provided with a tail support leg that can extend backward.

6. The multi-wheel steering articulated boom crane chassis according to claim 4, characterized in that, The left and right side support legs are staggered front and back.

7. The multi-wheel steering articulated boom crane chassis according to claim 1, characterized in that, The first axle (2) and the second axle (3) are connected to the frame (1) via a leaf spring suspension (14).

8. The multi-wheel steering articulated boom crane chassis according to claim 1, characterized in that, The third axle (4) is connected to the frame (1) via an air suspension (15).

9. The multi-wheel steering articulated boom crane chassis according to claim 1, characterized in that, The fourth axle (5) and the fifth axle (6) are connected to the frame (1) via rubber suspension (16).

10. The multi-wheel steering articulated boom crane chassis according to claim 1, characterized in that, The two longitudinal beams of the frame (1) are respectively connected to vertical arc-shaped support arc plates (11), and are connected at intervals to the front and rear to vertical first side plates (12) connected to the inner side of the support arc plates (11).

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