Cab overturning assembly and engineering mechanical equipment
The design of the flipping and locking components solves the problem of lack of limiters after the cab flips, achieving stable flipping and fixing of the cab, improving the safety and stability of engineering machinery and simplifying the maintenance and transportation process.
Patent Information
- Application Number
- CN202520539488.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-26
AI Technical Summary
The lack of effective limiting structures after the cab of existing construction machinery is overturned can cause the cab to overturn excessively or move in unexpected directions, affecting the safety and stability of the equipment.
The system employs a flipping assembly and a locking assembly, including a first lower suspension, a first upper suspension, and a limiting pin. The limiting pin is inserted into the lower pin hole and the upper pin hole. The locking assembly enables the cab to be fixed and separated from the frame in different angle states, ensuring that the cab can be flipped stably within a preset angle range.
It effectively prevents excessive tilting or unexpected movement of the cab, improves the safety and stability of construction machinery and equipment, facilitates maintenance and operation, and optimizes the transportation process.
Smart Images
Figure CN223835700U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mobile machinery and equipment technology, and in particular to a cab tilting assembly and engineering machinery and equipment. Background Technology
[0002] In modern engineering construction, construction machinery (such as excavators, loaders, bulldozers, etc.) plays a crucial role. The cab, as the operator's main workspace, directly impacts the operator's work efficiency, safety, and comfort.
[0003] Although existing construction machinery cabs already possess basic functionality, some shortcomings still exist in certain special scenarios:
[0004] Maintenance difficulties: Traditional fixed cabs make it difficult to inspect and maintain internal components, especially in confined spaces, where operators or maintenance personnel have difficulty accessing critical parts.
[0005] The rescue is difficult: In the event of an accident, the fixed driver's cab may become one of the factors that hinder rapid rescue.
[0006] Transportation limitations: For construction machinery that requires frequent transportation, the bulky fixed cab increases transportation costs and complexity.
[0007] To address the aforementioned problems, existing technologies have proposed a tiltable cab design. The core idea of this design is to achieve the complete tilting of the cab through a mechanical structure, thereby achieving the following objectives:
[0008] Improved maintenance efficiency: When maintenance is required on equipment inside or below the cab, simply flipping the cab at a certain angle will fully expose the parts to be repaired, greatly facilitating maintenance work.
[0009] Enhanced safety: In emergency situations, such as rollover accidents, the tiltable cab can be quickly adjusted to a position that is more conducive to rescue, reducing the risk of secondary injuries.
[0010] Optimize transportation process: By tilting the cab to lower the overall height, it can better adapt to various transportation conditions and reduce unnecessary disassembly and assembly steps.
[0011] However, the above design encountered a key problem in practical application: after the cab is tilted, the lack of an effective limiting structure may cause the cab to tilt excessively or move in an unexpected direction, thereby affecting the safety and stability of the equipment.
[0012] Therefore, there is an urgent need for cab tilting assemblies and engineering machinery equipment to solve the above problems. Utility Model Content
[0013] The purpose of this utility model is to provide a cab tilting assembly and engineering machinery equipment to solve the problem in the related technology that after the cab is tilted, the lack of an effective limiting structure may lead to excessive tilting of the cab or movement in an unexpected direction, thereby affecting the safety and stability of the equipment.
[0014] On one hand, this utility model provides a cab tilting assembly, which includes:
[0015] The flip assembly includes a first lower mount, a first upper mount, and a fixing member. The first lower mount is fixed to one side of the vehicle frame along a first horizontal direction, and the first upper mount is fixed to one side of the cab along the first horizontal direction. The first lower mount and the first upper mount are pivotally connected by a pivot shaft along a second horizontal direction. When the cab and the vehicle frame form a first preset angle, the fixing member can selectively fix the first lower mount and the first upper mount relative to each other.
[0016] The locking assembly includes two states: fixing the vehicle frame and separating the vehicle frame and the cab when the cab and the frame form a second preset angle. The first preset angle is greater than the second preset angle.
[0017] As a preferred technical solution for the cab tilting assembly, the first lower suspension and the first upper suspension are respectively provided with a lower pin hole and an upper pin hole along the first horizontal direction;
[0018] The fastener is a limiting pin. When the cab and the frame form the first preset angle, the limiting pin is inserted into the lower pin hole and the upper pin hole.
[0019] As a preferred technical solution for the cab tilting assembly, the first lower suspension and / or the first upper suspension are provided with storage holes.
[0020] As a preferred technical solution for the cab tilting assembly, the locking component includes a second lower mount, a second upper mount, and a mechanical lock. The second lower mount is fixed to the other side of the frame along the first horizontal direction, and the second upper mount is fixed to the other side of the cab along the first horizontal direction. When the cab and the frame form a second preset angle, the mechanical lock includes two states: fixing the second lower mount and separating the second upper mount.
[0021] As a preferred technical solution for the cab tilting assembly, one of the second lower suspension and the second upper suspension is provided with a guide cone, and the other is provided with a guide hole. When the cab and the frame form the second preset angle, the guide cone is inserted into the guide hole.
[0022] As a preferred technical solution for the cab tilting assembly, the locking component further includes an upper shock absorber, which is disposed between the second lower suspension and the vehicle frame.
[0023] As a preferred technical solution for the cab tilting assembly, the locking component further includes a lower shock absorber, a connecting bolt, and a connecting nut. One end of the connecting bolt passes sequentially through the second lower suspension, the upper shock absorber, the vehicle frame, and the lower shock absorber, and one end of the connecting bolt is screwed to the connecting nut.
[0024] As a preferred technical solution for the cab tilting assembly, at least two tilting components are provided, and the at least two tilting components are spaced apart along the second horizontal direction. At least two locking components are provided, and the at least two locking components are spaced apart along the second horizontal direction.
[0025] As a preferred technical solution for the cab tilting assembly, it also includes a hydraulic strut, which is located at the bottom of the cab, with one end of the hydraulic strut pivotally connected to the cab and the other end of the hydraulic strut pivotally connected to the vehicle frame.
[0026] On the other hand, this utility model provides engineering machinery equipment, including the cab tilting assembly in any of the above-mentioned solutions.
[0027] The beneficial effects of this utility model are as follows:
[0028] This utility model provides a cab tilting assembly and engineering machinery equipment. When inspecting engineering machinery equipment equipped with this cab tilting assembly, the locking component is switched to the disengaged state. At this time, the cab can be driven to rotate relative to the frame around the pivot shaft, so that the angle between the cab and the frame moves closer to the first preset angle from the second preset angle. When the angle between the cab and the frame is the first preset angle, the fixing component can fix the first lower suspension and the first upper suspension relative to each other, thereby fixing the angle between the cab and the frame at the first preset angle. At this time, the operator can inspect the equipment under the cab. The fixing component fixes the angle between the cab and the frame at the first preset angle, preventing the cab from tilting excessively or moving in an unexpected direction, thereby improving the safety and stability of the engineering machinery equipment. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the cab tilting assembly in an embodiment of the present utility model;
[0030] Figure 2 This is an exploded view of the cab tilting assembly in an embodiment of this utility model.
[0031] In the picture:
[0032] 100. Driver's cab;
[0033] X, first horizontal direction; Y, second horizontal direction; Z, vertical direction;
[0034] 1. Flip assembly; 11. First lower suspension; 111. Lower pin hole; 112. Storage hole; 12. First upper suspension; 121. Upper pin hole; 13. Pivot shaft; 14. Limiting pin;
[0035] 2. Locking assembly; 21. Second lower suspension; 211. Guide hole; 22. Second upper suspension; 23. Mechanical lock; 24. Guide cone; 25. Upper shock absorber; 26. Lower shock absorber; 27. Connecting bolt;
[0036] 3. Hydraulic struts. Detailed Implementation
[0037] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0038] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0041] like Figure 1 and Figure 2As shown, this embodiment provides a cab tilting assembly, which includes a tilting component 1 and a locking component 2. The tilting component 1 includes a first lower suspension 11, a first upper suspension 12, and a fixing member. The first lower suspension 11 is fixed to one side of the vehicle frame along the first horizontal direction X, and the first upper suspension 12 is fixed to one side of the cab 100 along the first horizontal direction X. The first lower suspension 11 and the first upper suspension 12 are pivotally connected by a pivot shaft 13 along the second horizontal direction Y. The fixing member is a limiting pin 14. The first lower suspension 11 and the first upper suspension 12 are respectively provided with a lower pin hole 111 and an upper pin hole 121 along the first horizontal direction X. When the cab 100 and the vehicle frame form a first preset angle, the limiting pin 14 is inserted into the lower pin hole 111 and the upper pin hole 121. When the cab 100 and the vehicle frame form a second preset angle, the locking component 2 includes two states: fixing the vehicle frame and the cab 100 and separating them. When inspecting construction machinery equipped with the cab tilting assembly, the locking component 2 is switched to the disengaged state. This allows the cab 100 to rotate relative to the frame around the pivot shaft 13, causing the angle between the cab 100 and the frame to move from the second preset angle towards the first preset angle. When the angle between the cab 100 and the frame is the first preset angle, the lower pin hole 111 and the upper pin hole 121 are aligned. The limiting pin 14 is then inserted into the lower pin hole 111 and the upper pin hole 121 to fix the angle between the cab 100 and the frame at the first preset angle. At this point, the operator can inspect the equipment below the cab 100. After inspection, the limiting pin 14 is pulled out, allowing the other side of the cab 100 to move closer to the frame, switching the angle between the cab 100 and the frame to the second preset angle. The locking component 2 is then switched to the fixed state, and the construction machinery can resume normal operation. The limiting pin 14 is inserted into the lower pin hole 111 and the upper pin hole 121 to fix the included angle between the cab 100 and the frame to the first preset included angle, so as to prevent the cab 100 from overturning or moving in an unexpected direction, thereby improving the safety and stability of the engineering machinery equipment.
[0042] In other embodiments, the fastener can also be a limiting strut, one end of which is pivotally connected to the vehicle frame. A limiting blind hole is provided on the surface of the cab 100 opposite to the vehicle frame. When the cab 100 and the vehicle frame form a first preset angle, the other end of the limiting strut is inserted into the limiting blind hole to support the cab 100, thereby fixing the angle between the cab 100 and the vehicle frame to the first preset angle.
[0043] Specifically, the first horizontal direction X is perpendicular to the second horizontal direction Y.
[0044] Optionally, the first preset angle is greater than the second preset angle, the first preset angle is 30° to 90°, preferably 60° or 80°, and the second preset angle is -10° to 10°, preferably 0°.
[0045] Optionally, the first lower suspension 11 and / or the first upper suspension 12 are provided with a storage hole 112. In this embodiment, after the equipment under the cab 100 is inspected and repaired, the limiting pin 14 is pulled out from the lower pin hole 111 and the upper pin hole 121, and then inserted into the storage hole 112, thereby completing the storage of the limiting pin 14. This allows the angle between the cab 100 and the frame to be adjusted from the second preset angle to the first preset angle. When fixing the cab 100 and the frame at the first preset angle position, this setting facilitates the operator in retrieving the limiting pin 14 and prevents the limiting pin 14 from being lost.
[0046] Optionally, the locking assembly 2 includes a second lower suspension 21, a second upper suspension 22, and a mechanical lock 23. The second lower suspension 21 is fixed to the other side of the vehicle frame along the first horizontal direction X, and the second upper suspension 22 is fixed to the other side of the cab 100 along the first horizontal direction X. When the cab 100 and the vehicle frame form a second preset angle, the mechanical lock 23 includes two states: fixing the second lower suspension 21 and separating the second upper suspension 22. In this embodiment, when the cab 100 and the vehicle frame form a second preset angle, the mechanical lock 23 can selectively fix or separate the second lower suspension 21 and the second upper suspension 22. Specifically, the mechanical lock 23 is an existing structure and will not be described in detail here.
[0047] Optionally, when the cab 100 and the frame form a second preset angle, the second lower suspension 21 and the second upper suspension 22 abut against each other in the vertical direction Z. In this embodiment, the second lower suspension 21 and the second upper suspension 22 abut against each other in the vertical direction Z, thereby achieving the effect of the bracket supporting the other side of the cab 100.
[0048] Optionally, one of the second lower suspension 21 and the second upper suspension 22 is provided with a guide cone 24, and the other is provided with a guide hole 211. When the cab 100 and the frame form a second preset angle, the guide cone 24 is inserted into the guide hole 211. In this embodiment, the guide cone 24 plays a guiding role, thereby ensuring that the second lower suspension 21 and the second upper suspension 22 always abut against each other, so that when the angle between the cab 100 and the frame is at the second preset angle, the relative positions of the cab 100 and the frame are always consistent.
[0049] Optionally, the locking assembly 2 further includes an upper shock absorber 25, which is disposed between the second lower suspension 21 and the frame. In this embodiment, the upper shock absorber 25 can reduce the transmission of frame vibrations to the cab 100, thereby improving the riding comfort of the staff in the cab 100.
[0050] Optionally, the locking assembly 2 further includes a lower shock absorber 26, a connecting bolt 27, and a connecting nut. One end of the connecting bolt 27 passes sequentially through the second lower suspension 21, the upper shock absorber 25, the frame, and the lower shock absorber 26, and one end of the connecting bolt 27 is screwed to the connecting nut. In this embodiment, the upper shock absorber 25 and the lower shock absorber 26 are respectively disposed on both sides of the frame. Compared to only disposing of the upper shock absorber 25, this arrangement can further reduce the vibration of the cab 100 and improve the riding comfort of the staff inside the cab 100. Specifically, both the upper shock absorber 25 and the lower shock absorber 26 are made of rubber.
[0051] Optionally, at least two flipping components 1 are provided, spaced apart along the second horizontal direction Y; at least two locking components 2 are provided, spaced apart along the second horizontal direction Y. In this embodiment, this arrangement can improve the stability of the cab 100 in both the flipped and relatively fixed states with the frame, preventing the cab 100 from tilting around the vertical direction Z during rotation. Specifically, there are two flipping components 1 and two locking components 2.
[0052] When the hydraulic strut 3 is positioned on one side of the cab 100 along the second horizontal direction Y, the lifting of the hydraulic strut 3 will generate a rotational torque in the horizontal plane on the cab 100. Over time, this will affect the fitting accuracy of the tilting assembly 1. To solve this problem, the cab tilting assembly may optionally include a hydraulic strut 3. The hydraulic strut 3 is located at the bottom of the cab 100, with one end pivotally connected to the cab 100 and the other end pivotally connected to the vehicle frame. In this embodiment, the point of action of the hydraulic strut 3 is located at the front-to-rear midpoint of the bottom of the cab 100, and the rotational torque generated in the horizontal plane on the cab 100 is negligible, resulting in higher accuracy over the same usage time.
[0053] This embodiment also provides engineering machinery equipment, including the cab tilting assembly in the above solution.
[0054] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A cab tilting assembly, characterized in that, include: The flip assembly (1) includes a first lower suspension (11), a first upper suspension (12) and a fixing member. The first lower suspension (11) is fixed to one side of the vehicle frame along a first horizontal direction (X), and the first upper suspension (12) is fixed to one side of the cab (100) along the first horizontal direction (X). The first lower suspension (11) and the first upper suspension (12) are pivotally connected by a pivot shaft (13) along a second horizontal direction (Y). When the cab (100) and the vehicle frame form a first preset angle, the fixing member can selectively fix the first lower suspension (11) and the first upper suspension (12) relative to each other. The locking assembly (2) includes two states: fixing the vehicle frame and separating the vehicle frame and the cab (100) when the cab (100) and the frame are at a second preset angle. The first preset angle is greater than the second preset angle.
2. The cab tilting assembly according to claim 1, characterized in that, The first lower suspension (11) and the first upper suspension (12) are respectively provided with a lower pin hole (111) and an upper pin hole (121) along the first horizontal direction (X); The fixing component is a limiting pin (14). When the cab (100) and the frame form the first preset angle, the limiting pin (14) is inserted into the lower pin hole (111) and the upper pin hole (121).
3. The cab tilting assembly according to claim 1, characterized in that, The first lower suspension (11) and / or the first upper suspension (12) are provided with a storage hole (112).
4. The cab tilting assembly according to claim 1, characterized in that, The locking assembly (2) includes a second lower mount (21), a second upper mount (22), and a mechanical lock (23). The second lower mount (21) is fixed to the other side of the vehicle frame along the first horizontal direction (X), and the second upper mount (22) is fixed to the other side of the cab (100) along the first horizontal direction (X). When the cab (100) and the vehicle frame form the second preset angle, the mechanical lock (23) includes two states: fixing the second lower mount (21) and separating the second upper mount (22).
5. The cab tilting assembly according to claim 4, characterized in that, One of the second lower suspension (21) and the second upper suspension (22) is provided with a guide cone (24), and the other is provided with a guide hole (211). When the cab (100) and the frame form the second preset angle, the guide cone (24) is inserted into the guide hole (211).
6. The cab tilting assembly according to claim 4, characterized in that, The locking assembly (2) also includes an upper shock absorber (25) disposed between the second lower suspension (21) and the frame.
7. The cab tilting assembly according to claim 6, characterized in that, The locking assembly (2) further includes a lower shock absorber (26), a connecting bolt (27) and a connecting nut. One end of the connecting bolt (27) passes through the second lower suspension (21), the upper shock absorber (25), the frame and the lower shock absorber (26) in sequence, and one end of the connecting bolt (27) is screwed to the connecting nut.
8. The cab tilting assembly according to claim 1, characterized in that, At least two of the flipping components (1) are provided, and the at least two flipping components (1) are spaced apart along the second horizontal direction (Y). At least two locking components (2) are provided, and the at least two locking components (2) are spaced apart along the second horizontal direction (Y).
9. The cab tilting assembly according to claim 8, characterized in that, It also includes a hydraulic strut (3), which is located at the bottom of the cab (100). One end of the hydraulic strut (3) is pivotally connected to the cab (100), and the other end of the hydraulic strut (3) is pivotally connected to the frame.
10. Engineering machinery and equipment, characterized in that, Includes the cab tilting assembly as described in any one of claims 1-9.