Front stand column profiled bar of safety cab of loading machine

Abstract

The utility model relates to the technical field of metal pipes, in particular to a front stand column profiled bar of a safety cab of a loading machine. The profiled bar comprises a pipe body, the cross section of the pipe body is of a continuously closed cavity structure, and the pipe body is formed by sequentially connecting a first vertical wall, a first transverse wall, a second vertical wall, a second transverse wall, a third vertical wall, a first inclined wall, a fourth vertical wall, a second inclined wall and a third transverse wall end to end. By means of the innovative section structural design, the strength, rigidity and collision safety of the front stand column of the cab are improved, and the high-standard protection requirement for the loader cab in the heavy industry scene is met.

Description

Technical Field

[0001] This utility model relates to the field of metal pipe technology, and in particular to a special-shaped profile for the front pillar of the safety cab of a loader. Background Technology

[0002] Industrial loaders, also known as wheeled loaders, are core equipment in the construction machinery field, widely used in heavy industrial settings such as construction, mining, ports, and logistics. Under these harsh working conditions, the loader cab, as a safety barrier for the operator, must possess sufficient strength and rigidity to withstand external impacts, vibrations, and rollovers, ensuring the operator's safety.

[0003] Traditional cab front pillars often use square or round tube structures. The moment of inertia and section modulus of round and square tubes are relatively small, resulting in poor bending and torsional resistance. Under complex working conditions, such as when the loader is subjected to lateral impact or torque, traditional structures are prone to bending or torsional deformation, affecting the overall stability of the cab. Summary of the Invention

[0004] To address the shortcomings of the aforementioned technologies, this utility model provides a special-shaped front pillar profile for the safety cab of a loader. Through innovative cross-sectional structural design, it aims to significantly improve the bending stiffness, torsional stiffness, and collision safety of the front pillar of the cab, thereby meeting the high-standard protection requirements for loader cabs in heavy industrial scenarios.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a special-shaped profile for the front pillar of a loader's safety cab, comprising a tube body, the cross-section of which is a continuously closed cavity structure, the cavity structure comprising a first vertical wall, the first vertical wall being bent clockwise by 90° and extended to form a first horizontal wall, the first horizontal wall being bent counterclockwise by 90° and extended to form a second vertical wall, the second vertical wall being bent clockwise by 90° and extended to form a second horizontal wall, the second horizontal wall being bent clockwise by 90° and extended to form a third vertical wall, the third vertical wall being bent counterclockwise by 85° and extended to form a first inclined wall, the first inclined wall being bent clockwise by 85° and extended to form a fourth vertical wall, the fourth vertical wall being bent clockwise by 32° and extended to form a second inclined wall, the second inclined wall being bent clockwise by 58° and extended to form a third horizontal wall, the third horizontal wall being connected to the first vertical wall.

[0006] Furthermore, the first vertical wall, the first horizontal wall, the second vertical wall, the second horizontal wall, the third vertical wall, the first inclined wall, the fourth vertical wall, the second inclined wall, and the third horizontal wall are smoothly connected by the first bend, the second bend, the third bend, the fourth bend, the fifth bend, the sixth bend, the seventh bend, the eighth bend, and the ninth bend, respectively.

[0007] Furthermore, the inner bending radius of the first bend, third bend, fourth bend, sixth bend, and ninth bend is T, where T is the wall thickness of the pipe.

[0008] Furthermore, the wall thickness T of the tube body is 3mm.

[0009] Furthermore, the inner bending radius of the seventh and eighth bends is 2T+1.

[0010] Furthermore, the inner bending radius of the second and fifth bends is 2T-1.

[0011] Furthermore, the distance between the second and third transverse walls is 70-80mm.

[0012] Furthermore, the distance between the second transverse wall and the first transverse wall is 20-30mm.

[0013] Furthermore, the distance between the first vertical wall and the fourth vertical wall is 70-80mm.

[0014] Furthermore, the distance between the first vertical wall and the second vertical wall is 20-30mm, and the distance between the first vertical wall and the third vertical wall is 40-50mm.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are:

[0016] This utility model improves the strength, rigidity, and collision safety of the front pillar of the cab through an innovative cross-sectional structure design, meeting the high standard protection requirements for loader cabs in heavy industrial scenarios. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0018] Figure 1 This is a cross-sectional view of the profile.

[0019] Figure 2 This is a schematic diagram of bending irregular profiles.

[0020] Explanation of reference numerals in the attached diagram: 1-First vertical wall, 2-First bend, 3-First horizontal wall, 4-Second bend, 5-Second vertical wall, 6-Third bend, 7-Second horizontal wall, 8-Fourth bend, 9-Third vertical wall, 10-Fifth bend, 11-First inclined wall, 12-Sixth bend, 13-Fourth vertical wall, 14-Seventh bend, 15-Second inclined wall, 16-Eighth bend, 17-Third horizontal wall, 18-Ninth bend. Detailed Implementation

[0021] The features and exemplary embodiments of various aspects of this utility model will now be described in detail. To make the objectives, technical solutions, and advantages of this utility model clearer, the following description, in conjunction with the accompanying drawings and specific embodiments, will provide a further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it. Those skilled in the art will recognize that this utility model can be implemented without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of this utility model by illustrating examples of it.

[0022] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this utility model. It should also be noted in the description of this utility model that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" 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 direct connection or an indirect connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] like Figure 1 and Figure 2 As shown, this embodiment provides a special-shaped front pillar profile for the safety cab of a loader, which aims to significantly improve the bending stiffness, torsional stiffness, and collision safety of the front pillar of the cab through innovative cross-sectional structural design, so as to meet the high standard protection requirements for the loader cab in heavy industrial scenarios.

[0024] The front column profile adopts a continuous closed cavity structure, consisting of 9 wall sections connected by bends at different angles. Starting from the first vertical wall 1, the first vertical wall 1 bends clockwise by 90° and extends to form the first horizontal wall 3. The first horizontal wall 3 bends counterclockwise by 90° and extends to form the second vertical wall 5. The second vertical wall 5 bends clockwise by 90° and extends to form the second horizontal wall 7. The second horizontal wall 7 bends clockwise by 90° and extends to form the third vertical wall 9. The third vertical wall 9 bends counterclockwise by 85° and extends to form the first inclined wall 11. The first inclined wall 11 bends clockwise by 85° and extends to form the fourth vertical wall 13. The fourth vertical wall 13 bends clockwise by 32° and extends to form the second inclined wall 15. The second inclined wall 15 bends clockwise by 58° and extends to form the third horizontal wall 17, finally closing with the first vertical wall 1.

[0025] The tube body forms an oblique force transmission channel through continuous bends of the fourth vertical wall 13, the second inclined wall 15, and the third transverse wall 17. The angle design of this channel must take into account the aerodynamic shape. The second inclined wall 15 and the third transverse wall 17 constitute the impact surface. Under transient impact conditions, the oblique path design absorbs energy through plastic deformation (energy absorption zone). Combined with the elastic recovery characteristics of the fourth vertical wall 13 and the first inclined wall 11 (buffer zone), the dynamic deformation of the structure is controlled within a safe threshold.

[0026] The wall thickness T of the tube body is 3mm, meeting the requirements for compressive and torsional resistance while ensuring lightweight design. The distance between the second transverse wall 7 and the third transverse wall 17 is 70-80mm, and 74mm is selected in this embodiment. The distance between the first vertical wall 1 and the fourth vertical wall 13 is 70-80mm, and 73mm is selected in this embodiment. The area enclosed by the second transverse wall 7, the third transverse wall 17, the first vertical wall 1, and the fourth vertical wall 13 is the main load-bearing area of ​​the profile of this utility model. By precisely controlling the distance between these walls, this utility model can significantly improve the load-bearing capacity and overall structural performance of this area while ensuring structural lightweight design. This allows the main load-bearing area to more effectively disperse and transfer stress when subjected to external impact or torque, thereby protecting the overall stability of the cab and the safety of the operator.

[0027] The distance between the second transverse wall 7 and the first transverse wall 3 is 20-30mm, and 25mm is chosen in this embodiment. The distance between the first vertical wall 1 and the second vertical wall 5 is 20-30mm, and 25mm is chosen in this embodiment. The distance between the first vertical wall 1 and the third vertical wall 9 is 40-50mm, and 43mm is chosen in this embodiment. This type of compact spacing significantly improves bending stiffness by increasing the local section moment of inertia.

[0028] The walls are designed to transition smoothly between each section. Specifically, the first vertical wall 1, the first horizontal wall 3, the second vertical wall 5, the second horizontal wall 7, the third vertical wall 9, the first inclined wall 11, the fourth vertical wall 13, the second inclined wall 15, and the third horizontal wall 17 are smoothly transitioned by the first bend 2, the second bend 4, the third bend 6, the fourth bend 8, the fifth bend 10, the sixth bend 12, the seventh bend 14, the eighth bend 16, and the ninth bend 18, respectively, to ensure uniform stress distribution and avoid stress concentration.

[0029] The seventh bend (14) and eighth bend (16) adopt a large radius design, with an inner bending radius of 2T+1 (T being the pipe wall thickness), which is 7mm in this embodiment. This effectively absorbs energy through plastic deformation when subjected to external forces, significantly reducing cab deformation and protecting operator safety. The second bend (4) and fifth bend (10) adopt a medium radius design, with an inner bending radius of 2T-1, which is 5mm in this embodiment. This balances the overall structural stiffness and stress distribution, improving fatigue life. The first bend (2), third bend (6), fourth bend (8), sixth bend (12), and ninth bend (18) adopt a small radius design, with an inner bending radius of T, which is 3mm in this embodiment. This strengthens local stiffness and prevents failure at critical connections.

[0030] The embodiments described above are not exhaustive, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the invention, enabling those skilled in the art to effectively utilize the invention and its modifications. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the protection scope of the invention.

Claims

1. A special-shaped profile for the front pillar of a loader's safety cab, characterized in that: The tube includes a pipe body, the cross-section of which is a continuously closed cavity structure. The cavity structure includes a first vertical wall (1), the first vertical wall (1) being bent 90° clockwise and extended to form a first horizontal wall (3), the first horizontal wall (3) being bent 90° counterclockwise and extended to form a second vertical wall (5), the second vertical wall (5) being bent 90° clockwise and extended to form a second horizontal wall (7), and the second horizontal wall (7) being bent 90° clockwise and extended to form a third vertical wall (5). The third vertical wall (9) is bent counterclockwise by 85° and extended to form the first inclined wall (11). The first inclined wall (11) is bent clockwise by 85° and extended to form the fourth vertical wall (13). The fourth vertical wall (13) is bent clockwise by 32° and extended to form the second inclined wall (15). The second inclined wall (15) is bent clockwise by 58° and extended to form the third horizontal wall (17). The third horizontal wall (17) is connected to the first vertical wall (1).

2. The special-shaped front pillar of the loader's safety cab according to claim 1, characterized in that: The first vertical wall (1), the first horizontal wall (3), the second vertical wall (5), the second horizontal wall (7), the third vertical wall (9), the first inclined wall (11), the fourth vertical wall (13), the second inclined wall (15) and the third horizontal wall (17) are smoothly connected by the first bend (2), the second bend (4), the third bend (6), the fourth bend (8), the fifth bend (10), the sixth bend (12), the seventh bend (14), the eighth bend (16) and the ninth bend (18) respectively.

3. The special-shaped front pillar of the loader's safety cab according to claim 2, characterized in that: The inner bending radius of the first bend (2), the third bend (6), the fourth bend (8), the sixth bend (12) and the ninth bend (18) is T, where T is the wall thickness of the pipe.

4. The special-shaped front pillar of the loader's safety cab according to claim 3, characterized in that: The wall thickness T of the tube is 3 mm.

5. The special-shaped front pillar of the loader's safety cab according to claim 4, characterized in that: The inner bending radius of the seventh bend (14) and the eighth bend (16) is 2T+1.

6. The special-shaped front pillar of the loader's safety cab according to claim 5, characterized in that: The inner bending radius of the second bend (4) and the fifth bend (10) is 2T-1.

7. The special-shaped front pillar of the loader's safety cab according to claim 1, characterized in that: The distance between the second transverse wall (7) and the third transverse wall (17) is 70-80mm.

8. The special-shaped front pillar of the loader's safety cab according to claim 7, characterized in that: The distance between the second transverse wall (7) and the first transverse wall (3) is 20-30mm.

9. The special-shaped front pillar of the loader's safety cab according to claim 1, characterized in that: The distance between the first vertical wall (1) and the fourth vertical wall (13) is 70-80mm.

10. The special-shaped front pillar of the loader's safety cab according to claim 9, characterized in that: The distance between the first vertical wall (1) and the second vertical wall (5) is 20-30mm, and the distance between the first vertical wall (1) and the third vertical wall (9) is 40-50mm.

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