Mounting structure of a post to a vehicle frame

Abstract

The utility model provides a mounting structure of stand and frame, including frame side muscle and the support base of being fixed on frame side muscle, support base has the gravity bearing portion of extending to the side, still include stand, its bottom is equipped with the support cooperation portion of shape adaptation with gravity bearing portion, support cooperation portion is hung on gravity bearing portion, forms vertical load path of stand gravity transmission to frame side muscle. Through the hanging type design of support base and stand bottom support cooperation portion, first in freight vehicle stand installation constructs the vertical load path of being independent of traditional insertion point, turns over the inherent defect that stand gravity concentrated action was in single socket completely. The structure makes stand gravity direct transmission to frame side muscle through support base, forms efficient gravity dispersion mechanism.

Description

Technical Field

[0001] This utility model relates to the technical field of truck body components, specifically to the installation structure of the column and the frame. Background Technology

[0002] Currently, the side panel pillars of freight vehicles are generally assembled using a plug-in structure. This involves inserting the reduced-diameter end of the pillar directly into a slot in the side rib of the frame for fixation. While this design offers short-term advantages such as simple structure and convenient assembly and disassembly, it reveals a fundamental flaw under the complex operating conditions of long-distance transportation: the pillar and the side rib of the frame rely solely on the mechanical connection of a single plug-in point, which cannot effectively distribute the multi-directional impact loads generated by vehicle bumps.

[0003] Of particular concern is that the lateral forces and gravity borne by the column are concentrated entirely at the joint. Under continuous alternating stress, this leads to stress concentration around the joint, causing structural fatigue deformation and even cracking. Worse still, the column creates a lever effect under gravity, exacerbating the risk of loosening at the joint. This can cause the column to sway, make abnormal noises, or even become unstable when the vehicle is traveling at high speeds or on curves, severely restricting freight safety and the lifespan of components. Utility Model Content

[0004] This utility model proposes an installation structure for the column and the frame, which solves the problem that in the prior art, the mechanical cooperation between the column and the side ribs of the frame relies only on a single plug-in point, which cannot effectively decompose the multi-directional impact load generated by vehicle bumps.

[0005] The technical solution of this utility model is implemented as follows: The mounting structure of the upright and the frame includes a frame side rib and a support base fixed on the frame side rib. The support base has a gravity-bearing part extending laterally. It also includes an upright with a support mating part at its bottom that is adapted to the shape of the gravity-bearing part. The support mating part is attached to the gravity-bearing part to form a vertical load-bearing path for the gravity of the upright to be transmitted to the frame side rib.

[0006] Furthermore, it also includes a lateral displacement constraint mechanism, which comprises: Positioning pins are installed on the column; Positioning interface provided on the support base; The positioning pin is inserted into the positioning interface to limit the horizontal displacement of the column.

[0007] Furthermore, the gravity-bearing part is a first hook-shaped structure integrally formed at the bottom of the support base, and the supporting mating part is a second hook-shaped structure provided on the rear side of the positioning insert shaft; The hook-shaped contour of the second hook-shaped structure cooperates with the hook groove of the first hook-shaped structure.

[0008] Furthermore, the second hook-shaped structure has an axial clearance opening below the corresponding positioning shaft.

[0009] Furthermore, it also includes a secondary positioning component, which comprises: Multiple positioning frames are provided on the supporting base; A positioning back plate is located on the back of the column, on which a positioning shaft is inserted into the positioning frame.

[0010] Furthermore, the height of the positioning back plate is less than the height of the main column, and the bottom end of the positioning back plate abuts against the top surface of the supporting base for two-stage gravity bearing.

[0011] The beneficial effects of the technical solution provided in this application are as follows: 1. The mounting structure of this column and frame, through the hook-and-loop design of the support base and the bottom support of the column, is the first to create a vertical load-bearing path independent of the traditional plug-in point in the installation of freight vehicle columns, completely reversing the inherent defect of the column's weight being concentrated on a single plug. This structure allows the column's weight to be directly transferred to the side reinforcement of the frame through the support base, forming an efficient gravity distribution mechanism. It eliminates the risk of stress concentration around the plug caused by the leverage effect from the root, significantly improving fatigue resistance and structural durability. 2. The mounting structure of this column and frame, under bumpy vehicle conditions, allows the weight-bearing part and the supporting part to mesh together, spontaneously suppressing the column's tendency to tip over. The static friction provided by the contact surface further resists lateral impacts, resulting in a significantly improved resistance to lateral displacement compared to traditional plug-in structures. This structural breakthrough reduces the incidence of column noise to less than 1 / 5 of the original level when freight vehicles are driving at high speeds around corners or on rough roads, fundamentally ensuring freight safety and extending the service life of components. Attached Figure Description

[0012] 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.

[0013] Figure 1 This is a schematic diagram showing the installation state of the column of this utility model on the side rib of the vehicle frame; Figure 2 This is an exploded view of the column and the side ribs of the frame of this utility model; Figure 3 This is a schematic diagram of the second hook-shaped structure and the positioning insert shaft of this utility model.

[0014] In the diagram: 10 Side rib of the frame; 20 Support base; 21 First hook-shaped structure; 22 Positioning interface; 23 Positioning frame; 30 Column; 31 Positioning shaft; 32 Positioning insert shaft; 33 Second hook-shaped structure; 34 Positioning back plate; 35 Axial clearance opening. Detailed Implementation

[0015] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] Reference Figure 1-3 This embodiment provides an installation structure for the column and the vehicle frame. The column is mainly used in freight vehicle scenarios. For example, when the side panel of a freight vehicle needs to remain upright after being flipped over, it needs to be fixed to the side of the side panel by a column fixed to the freight vehicle body. The conventional connection method between the column and the freight vehicle body is a plug-in method, that is, a plug is opened on the side rib of the freight vehicle, and the lower end of the column is smaller than the upper end. The smaller end of the column is inserted into the plug of the side rib of the freight vehicle. This assembly method is simple to operate and has a simple structure. However, the column of this assembly method has the defect of insufficient stability. Specifically, because the column and the side rib of the freight vehicle are only connected by a plug, the single fixed foundation is subject to accelerated wear and tear due to the frequent bumps of the freight vehicle during transportation.

[0017] The mounting structure of the column and the frame includes a frame side rib 10 and a support base 20 fixed to the frame side rib 10. The support base 20 has a gravity-bearing part extending laterally. It also includes a column 30, the bottom of which has a support mating part adapted to the shape of the gravity-bearing part. The support base 20 forms a hook-and-loop engagement with the support mating part at the bottom of the column 30 through its laterally extending gravity-bearing part, creating a directional gravity transfer channel between the frame side rib 10 and the column 30. This structure allows the vertical load of the column 30 to be directly transferred via the path of support mating part → gravity-bearing part → support base 20 → frame side rib 10, completely avoiding the stress concentration risk caused by gravity concentration at a single point in traditional plug-in structures. Simultaneously, the self-locking effect of the meshing surface shape adaptation suppresses the column's tendency to tip over under vehicle bumpy conditions.

[0018] In some embodiments, a lateral displacement constraint mechanism is also included, comprising a positioning pin 32 on the column 30 and a positioning interface 22 on the support base 20. The insertion and engagement of the positioning pin 32 and the positioning interface 22 establishes a rigid lateral locking mechanism between the support base 20 and the column 30. This mechanism forms a horizontal geometric constraint through a shaft-hole interference fit, precisely suppressing the lateral slippage and sway of the column 30 relative to the frame side ribs 10 when the vehicle is bumpy, diverting the lateral impact load borne by the gravity-bearing part to the positioning pin 32, and achieving separation of the mechanical paths of vertical bearing and horizontal limiting.

[0019] When the positioning shaft 32 is inserted into the positioning interface 22, its outer side and the inner wall of the positioning interface 22 generate radial extrusion force. This force is decomposed into two orthogonal components. The axial component locks the column 30 in the direction of the axis of the shaft 32, eliminating the inertial swaying under the acceleration and deceleration conditions of the freight vehicle. The tangential component forms an anti-torsional torque in the circumference of the shaft 32, blocking the circumferential swaying of the column caused by the excitation of uneven road surface.

[0020] In some embodiments, the gravity-bearing part is a first hook-shaped structure 21 integrally formed at the bottom of the support base 20, and the support mating part is a second hook-shaped structure 33 disposed on the rear side of the positioning insert shaft 32. The hook-shaped contour of the second hook-shaped structure 33 and the hook groove of the first hook-shaped structure 21 cooperate with each other, and the topology-optimized interface for gravity bearing is formed by the precise interlocking of the hook groove contours. This design concretizes the abstract support mating into a double hook-shaped mechanical interlocking body. By utilizing the geometric nesting of the hook cavities, the gravity of the column is transformed into compressive stress distributed along the normal direction of the hook contour, making the load transfer area more than 3 times larger than that of a planar support, fundamentally eliminating local plastic deformation caused by stress concentration.

[0021] When the hook groove of the first hook structure 21 is nested into the hook contour of the second hook structure 33, a three-point mechanical balance system is formed. The upper engagement point is located at the contact area between the top of the hook groove of the first hook structure 21 and the hook contour of the second hook structure 33, which mainly bears the pressure and inhibits the column from tilting backward. The lower engagement point is located at the turning area between the bottom of the hook groove of the first hook structure 21 and the hook contour of the second hook structure 33, which aims to generate shear resistance to block the column from moving forward. The hook cavity closure area is located at the gap of the bend of the double hook structure, which stores the rebound potential energy through the elastic deformation of the material and continuously provides the contact surface clamping force.

[0022] In some embodiments, the second hook-shaped structure 33 has an axial clearance opening 35 below the positioning insert shaft 32, forming a dynamic assembly channel by precisely removing local material from the hook body. This structure provides an interference-free path for the axial movement of the positioning insert shaft 32 while maintaining the gravity bearing capacity of the double hook-shaped structure, thus fundamentally solving the problems of insert shaft wear and hook-shaped structure stress distortion caused by spatial conflicts in traditional integrated designs.

[0023] In some embodiments, a secondary positioning component is also included, comprising multiple positioning frames 23 disposed on the support base 20; and a positioning back plate 34 disposed on the back of the column 30, on which a positioning shaft 31 is provided for insertion into the positioning frames 23. The positioning back plate 34 and the multiple positioning frames 23 distributed on the support base 20 cooperate through the insertion of the positioning shaft 31 to construct a redundant constraint system for the spatial attitude of the column. In addition to the lateral displacement constraint, this component adds locking of the rotational degree of freedom of the column 30 around the vertical axis, and dissipates the vibration energy of the frame side ribs 10 through multi-axis linkage, thereby improving the column's ability to resist composite impact loads.

[0024] In some embodiments, the height of the positioning backplate 34 is less than the height of the main body of the column 30, and the bottom end of the positioning backplate 34 abuts against the top surface of the supporting base 20 for secondary gravity bearing. Through the height reduction design of the positioning backplate 34 and its bottom end abutting against the top surface of the supporting base 20, a secondary gravity bearing transmission path is embedded in the secondary positioning assembly. This structure allows the positioning backplate 34 to perform its spatial constraint function while simultaneously diverting the off-center gravity of the column 30 to the supporting base 20 through its bottom contact surface, forming a dynamic compensation mechanism for the main bearing path and completely solving the problem of root bending moment overload caused by the cantilever effect in long columns.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. The mounting structure of the column and the frame, characterized in that, include: The frame side rib (10) and the support base (20) fixed on the frame side rib (10) have a gravity bearing part extending to the side; it also includes a column (30) with a support mating part at the bottom that is adapted to the shape of the gravity bearing part; the support mating part is attached to the gravity bearing part to form a vertical bearing path for the column to transfer gravity to the frame side rib (10).

2. The mounting structure of the column and the frame according to claim 1, characterized in that: It also includes a lateral displacement constraint mechanism, which comprises: Positioning pin (32) is provided on column (30); Positioning interface (22) provided on the support base (20); The positioning pin (32) is inserted into the positioning interface (22) to limit the horizontal displacement of the column.

3. The mounting structure of the column and the frame according to claim 2, characterized in that: The gravity bearing part is a first hook-shaped structure (21) integrally formed at the bottom of the support base (20), and the support fitting part is a second hook-shaped structure (33) provided on the rear side of the positioning insert shaft (32). The hook-shaped profile of the second hook structure (33) cooperates with the hook groove of the first hook structure (21).

4. The mounting structure of the column and the frame according to claim 3, characterized in that: The second hook-shaped structure (33) has an axial clearance opening (35) below the corresponding positioning insert shaft (32).

5. The mounting structure of the column and the frame according to claim 1, characterized in that: It also includes a secondary positioning component, which comprises: Multiple positioning frames (23) are provided on the supporting base (20); A positioning back plate (34) is provided on the back of the column (30), and a positioning shaft (31) is provided on it to be inserted into the positioning frame (23).

6. The mounting structure of the column and the frame according to claim 5, characterized in that: The height of the positioning back plate (34) is less than the height of the main body of the column (30), and the bottom end of the positioning back plate (34) abuts against the top surface of the supporting base (20) for two-stage gravity bearing.

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