A front independent axle structure for a leaf-spring vehicle

Abstract

The utility model belongs to the field of frame manufacturing technology field, concretely relates to a kind of blade car front independent axle structure. Including the front goods platform and main beam welded as a whole, the front goods platform is equipped with reinforcing crossbeam to reduce blade fulcrum installation height, main beam two sides welding transverse support beam and fixed two independent suspensions, steering system is composed of steering cylinder, steering airplane plate, cross tie rod, rotating main shaft and fixed assembly, the rodless cavity of steering cylinder is connected with main beam by welded cylinder fixed seat, rotating main shaft is installed by the fixed block and bolt lock block assembly welding in main beam interior, steering airplane plate hinged cylinder cavity and axle steering are driven by cross tie rod, independent suspension's lifting cylinder connects axle and support beam, when empty car, tire can be retracted to reduce wear and tear. The utility model optimizes load capacity and maintenance convenience by reinforcing crossbeam and modularization fixed assembly, solves the problem of goose neck pressure too large, tire wear and low blade transport efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle frame manufacturing technology, specifically relating to an independent axle structure at the front of a blade vehicle. Background Technology

[0002] In the road transport of large items such as wind turbine blades, the design of the front axle structure of a semi-trailer directly affects transport stability and economy. Traditional blade transport vehicles typically use a rigid, integrated connection between the front cargo platform and the main beam, with the blade support points directly mounted on the upper surface of the main beam. This results in a high installation height, increasing the risk of center of gravity shift during transport. Furthermore, the main beam must bear the entire load from the blades, causing the gooseneck and tractor unit to be under constant high pressure, accelerating tire and connecting component mechanical wear. In addition, when the vehicle is empty, the continuous contact between the fixed axle and the ground further exacerbates tire wear. While existing technologies offer solutions by reinforcing the main beam or optimizing the suspension layout, these generally suffer from structural complexity, inconvenient maintenance, and limited load-bearing capacity, making it difficult to simultaneously address the needs of reducing blade installation height, distributing pressure, and protecting empty tires.

[0003] Chinese Patent No. CN222793161 U discloses an axle mounting assembly and a vehicle. The axle mounting assembly includes an axle and an X-shaped thrust rod; a connecting assembly comprising a double-ended stud and a connecting nut. The double-ended stud includes a first threaded section and a second threaded section. The first threaded section is threadedly connected to the axle, and the second threaded section passes through the X-shaped thrust rod. The second threaded section is threadedly connected to the connecting nut on the side of the X-shaped thrust rod opposite to the axle. This axle mounting assembly of the present invention connects the axle and the X-shaped thrust rod via the connecting assembly by connecting the first threaded section to the axle and using the cooperation of the second threaded section and the connecting nut to connect the X-shaped thrust rod. This reduces the possibility of hole misalignment during connection between the axle and the X-shaped thrust rod, and lowers assembly difficulty. The aforementioned method of connecting the axle and X-shaped thrust rod via double-ended studs, while optimizing assembly precision, does not involve an independent suspension system. This prevents the blade load from being distributed to the lateral support beams on both sides of the main beam, leaving the axle to directly bear the entire load. This results in continuous high pressure on the gooseneck and tractor unit, accelerating mechanical wear. Furthermore, the blade support point still needs to be located on the upper surface of the main beam, leading to a higher installation height and increased risks to transportation stability. Therefore, those skilled in the art urgently need to solve these technical problems. Utility Model Content

[0004] This invention addresses the problem in the prior art where the axle and X-shaped thrust rod are connected by double-headed studs. While this optimizes assembly precision, it does not involve an independent suspension system and cannot distribute the blade load to the transverse support beams on both sides of the main beam. The axle still directly bears the entire load, resulting in continuous high pressure on the gooseneck and tractor head, accelerating mechanical wear. At the same time, the blade support point still needs to be set on the upper surface of the main beam, resulting in a higher installation height and increased risk to transportation stability.

[0005] The technical solution adopted by this utility model is:

[0006] A blade-type independent front axle structure is installed between the front cargo platform and the main beam behind the semi-trailer cab.

[0007] The front loading platform and main beam are welded together as one piece. The front loading platform is provided with a reinforcing crossbeam, and the main beam is provided with transverse support beams on both sides. The front loading platform is provided with blade support points, which are welded to the reinforcing crossbeam.

[0008] Two independent suspensions are respectively fixed to the transverse support beam by bolts;

[0009] The steering system includes a steering cylinder, a steering plate, a tie rod, a rotary spindle, a cylinder mounting base, and a spindle mounting assembly;

[0010] The cylinder mounting base is welded to the main beam and fixes the rodless cavity of the steering cylinder; the rotating spindle is installed inside the main beam through the spindle fixing assembly.

[0011] One end of the steering plate is hinged to the rod chamber of the steering cylinder, and the other end is connected to the axle via a tie rod.

[0012] By adopting the above technical solutions and optimizing the connection and position of each component, the performance of the blade transport vehicle is significantly improved: the front cargo platform is welded to the main beam as a whole, and combined with the reinforcing crossbeam of the front cargo platform, it not only enhances the overall structural rigidity but also reduces the installation height of the blade support point, reducing the risk of transport center of gravity shift; the transverse support beams on both sides of the main beam provide symmetrical support points for the independent suspension, and modular disassembly and assembly are achieved through bolt fixing, which facilitates maintenance and distributes the blade load to the main beam, relieving pressure on the gooseneck and the front of the vehicle; the hydraulic cylinder mounting seat of the steering system is welded to the main beam to ensure the stability of the hydraulic cylinder, and the rotating main shaft built into the main beam reduces space occupation, while the steering aircraft plate articulates the hydraulic cylinder and the tie rod, efficiently transmitting steering power and reducing mechanical wear; the welded fixing block and bolt locking block design of the main shaft fixing assembly not only ensures the positioning accuracy of the main shaft but also simplifies the disassembly and maintenance process; the lifting cylinder of the independent suspension connects the transverse support beam and the axle, and the tires are retracted when unloaded to reduce wear, and the axle height is dynamically adjusted to optimize load distribution. Therefore, this utility model has been comprehensively optimized in terms of structural strength, load-bearing capacity, maintenance efficiency and functional expandability, and has solved key problems such as high pressure on the gooseneck of traditional axles, tire wear and inconvenience of installation.

[0013] Furthermore, the spindle fixing assembly includes a fixing block welded inside the main beam and a locking block connected to the fixing block by bolts, wherein the locking block is provided with bolts that mate with threaded holes on the fixing block.

[0014] By adopting the above technical solution, the fixing block is welded inside the main beam, providing a rigid support reference for the rotating main shaft, ensuring the accuracy of the installation position and axis, and avoiding steering jamming or decreased transmission efficiency. The locking block is connected to the fixing block by bolts, allowing for quick removal of the main shaft by simply loosening the bolts without damaging the main beam structure, significantly shortening maintenance time and reducing costs. The bolts and the threaded holes of the fixing block fit tightly, resisting transportation vibrations through preload, preventing bolt loosening, and ensuring long-term operational stability. In addition, the bolt connection design allows for the replacement of the locking block according to the main shaft size or wear condition, adapting to different models or upgrade requirements without modifying the main beam, improving design flexibility. In summary, this component ensures high-precision positioning while taking into account maintenance convenience and structural reliability, perfectly meeting the high-load, high-frequency maintenance requirements of blade transport vehicles.

[0015] Furthermore, the fixing blocks are welded to both the upper and lower surfaces inside the main beam, and the locking blocks are used to fix the rotating spindle with bolts.

[0016] By adopting the above technical solution, the design incorporates fixed blocks welded to both the upper and lower surfaces of the main beam, with the rotating spindle secured by locking bolts. This symmetrical rigid clamping structure evenly distributes the longitudinal and lateral loads on the spindle, significantly improving torsional resistance and preventing deformation or swaying caused by unilateral force, ensuring stable steering transmission. The double-sided fixed blocks provide rigid upper and lower references for the rotating spindle, limiting axial movement and ensuring precise alignment between its axis and the center of the main beam, preventing steering deviations or mechanical jamming caused by installation errors. Furthermore, the spindle can be disassembled without damage by simply loosening the upper and lower locking bolts, without disrupting the main beam structure, greatly simplifying maintenance and reducing costs. In addition, the upper and lower fixed blocks disperse vibration energy, and combined with the bolt preload locking design, effectively suppressing the impact of high-frequency vibrations on the spindle during transportation, extending component lifespan. In summary, this design, through symmetrical support, precise positioning, rapid maintenance, and vibration optimization, balances transmission accuracy, structural strength, and maintenance efficiency, perfectly meeting the comprehensive requirements of high-load blade transport vehicles for reliability, durability, and convenience.

[0017] Furthermore, the bolt holes on the transverse support beam are aligned with the reinforcing beam of the front cargo platform.

[0018] By adopting the above technical solution, the bolt hole positions of the transverse support beam are aligned with the reinforcing crossbeam of the front cargo platform. This precise hole matching achieves multiple performance improvements: Firstly, the bolt hole alignment ensures that the mounting point of the independent suspension and the support point of the reinforcing crossbeam are on the same vertical plane, optimizing the load transfer path and directly transmitting blade pressure to the reinforcing crossbeam through the suspension system. This reduces localized stress concentration in the main beam, preventing deformation or fatigue damage. Secondly, the transverse support beam and the reinforcing crossbeam form a continuous rigid frame, significantly enhancing overall bending and torsional resistance, suppressing abnormal vibrations on rough roads or during sharp turns, and improving structural stability. Thirdly, the alignment design simplifies the installation and positioning process, shortens assembly time, and reduces labor costs. During maintenance, the original hole positions can be directly matched without calibration or enlargement, greatly improving operational efficiency. Furthermore, the load is evenly distributed to the main beam through the reinforcing crossbeam, reducing direct pressure on the gooseneck and the tractor unit, decreasing mechanical wear, and extending the life of the tractor unit's suspension system and tires. In summary, this design, by optimizing load transfer, strengthening structural rigidity, and improving assembly and maintenance efficiency, fully meets the stringent requirements of high-load blade transport vehicles for reliability, economy, and ease of operation.

[0019] Furthermore, the extension and retraction direction of the steering cylinder is perpendicular to the longitudinal axis of the main beam and is hinged to the steering aircraft plate.

[0020] By adopting the above technical solution, the extension and retraction direction of the steering cylinder is perpendicular to the longitudinal axis of the main beam, and the design connects it to the steering aircraft plate through a hinge point. This multi-dimensional optimization enhances the steering system's efficiency: the vertical layout allows the cylinder thrust to act directly on the axle steering axis, reducing energy loss and significantly improving steering response speed and accuracy, meeting the rapid turning requirements of transporting large-sized blades; simultaneously, this layout fully utilizes the lateral space of the main beam, avoiding interference with the transverse support beam or lifting cylinder, making the structure more compact, reducing chassis height, and enhancing passability; the hinged connection design allows the cylinder to adapt to changes in the rotation angle of the steering aircraft plate during extension and retraction, reducing stress concentration and component wear caused by rigid connections, and extending the lifespan of the cylinder and aircraft plate; furthermore, the lateral thrust of the cylinder and the longitudinal rigidity of the main beam form orthogonal support, suppressing lateral vibration of the steering system. Combined with the flexible transmission of the hinge point, this effectively mitigates the impact of road bumps on steering action, ensuring smooth steering; the hinge point uses standardized bolt or pin connections, facilitating quick disassembly and maintenance without altering the main beam structure, reducing maintenance costs and downtime. Through the coordinated design of vertical thrust direction and flexible transmission, this solution has been comprehensively optimized in terms of steering efficiency, structural stability, space utilization and maintenance convenience, perfectly meeting the stringent requirements of high-load blade transport vehicles for steering accuracy, durability and operational flexibility under complex road conditions.

[0021] The beneficial effects of this utility model are as follows:

[0022] 1. This utility model welds the front cargo platform and the main beam into one piece, and sets a reinforcing crossbeam on the front cargo platform. Combined with the transverse support beams on both sides of the main beam, it forms an integral rigid structure. The reinforcing crossbeam serves as the low installation position of the blade fulcrum, which effectively lowers the center of gravity during transportation. At the same time, the transverse support beam is independently suspended by bolts, which distributes the blade load to both sides of the main beam, avoiding concentrated pressure on the gooseneck and the tractor head. The modular design of the independent suspension combined with the bolt connection not only improves the structural stability, but also simplifies the maintenance process and significantly reduces the risk of mechanical wear.

[0023] 2. This utility model achieves efficient steering power transmission by welding the hydraulic cylinder mounting base to the main beam and embedding the rotating spindle inside the main beam, combined with the hinged connection between the steering aircraft plate, hydraulic cylinder, and tie rod. The vertical thrust direction of the hydraulic cylinder is orthogonal to the longitudinal axis of the main beam, directly driving the steering axis of the axle and reducing energy loss. The rotating spindle is rigidly clamped on both sides by the upper and lower fixing blocks and locking blocks to limit axial movement and ensure steering transmission accuracy. The hinge point design allows the hydraulic cylinder to adapt to changes in steering angle, reducing rigid friction loss and improving system durability.

[0024] 3. This utility model achieves high-precision positioning and rapid maintenance of the rotating spindle through the cooperation of the upper and lower symmetrical fixing blocks and bolt locking blocks of the spindle fixing assembly. The fixing blocks are welded to the upper and lower surfaces inside the main beam to form an enclosed clamping structure, which evenly distributes the spindle load and enhances the torsional resistance. The locking blocks are connected to the fixing blocks by bolts, and the spindle can be disassembled simply by loosening the bolts without damaging the main beam structure. This ensures the stability of the spindle operation and simplifies the maintenance steps through the modular locking mechanism, adapting to the needs of high-frequency maintenance scenarios.

[0025] 4. This utility model strengthens the crossbeam by aligning the bolt holes of the independently suspended lifting cylinder with the bolt holes of the transverse support beam, thereby achieving dynamic load adjustment and optimized installation efficiency. The cylinder body of the lifting cylinder is connected to the support beam, and the piston rod is connected to the axle. When unloaded, the tires are retracted and raised to reduce wear. When loaded, the height is dynamically adjusted to optimize load distribution. The bolt holes are aligned with the reinforced crossbeam to form a continuous rigid frame, which directly transmits the load to the main beam, reducing stress concentration. The two work together to improve the chassis passability, while simplifying the assembly and positioning process and reducing labor costs and maintenance difficulty. Attached Figure Description

[0026] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0027] Figure 1 This is the left view of the present invention;

[0028] Figure 2 This is a top view of the present invention;

[0029] Figure 3 for Figure 1 Enlarged diagram of section A in the middle;

[0030] Figure 4 for Figure 2 Enlarged diagram of section B in the middle;

[0031] Figure 5 for Figure 3 A cross-sectional view along the AA direction;

[0032] Figure 6 for Figure 4 A cross-sectional view along the BB direction;

[0033] Figure 7 This is a schematic diagram of the spindle fixing assembly of this utility model;

[0034] Figure 8 This is a schematic diagram of the structure of the steering aircraft plate of this utility model;

[0035] Figure 9 This is a schematic diagram of the structure of the hydraulic cylinder mounting base of this utility model.

[0036] Among them, 10-front loading platform; 11-reinforcing crossbeam;

[0037] 20 - Main beam; 21 - Lateral support beam; 211 - Independent suspension;

[0038] 30-Steering system; 31-Steering cylinder; 32-Steering plate; 33-Tie bar; 34-Rotary spindle; 35-Cylinder mounting base; 36-Spindle mounting assembly; 361-Locking block; 362-Fixing block;

[0039] 40 - Blade pivot. Detailed Implementation

[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 intended to explain this utility model, and should not be construed as limiting this utility model.

[0041] The independent axle structure at the front of the blade vehicle according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0042] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9As shown, in this embodiment of the utility model, the independent axle structure at the front of the semi-trailer has a front cargo platform 10 and a main beam 20 welded together to form an integral steel structure, located behind the semi-trailer cab. A reinforcing crossbeam 11 is laterally positioned inside the front cargo platform 10, serving as the mounting base for the blade support point 40. The blade support point 40 is directly welded to the reinforcing crossbeam 11, positioned below the upper surface of the main beam 20. A transverse support beam 21 is symmetrically welded to the outer walls of both sides of the main beam 20, perpendicular to the longitudinal axis of the main beam. The front cargo platform 10 and the main beam 20 are fixed together by welding to form a rigid whole. The reinforcing crossbeam 11 is welded to the front cargo platform 10, and the transverse support beam 21 is welded to the main beam 20. Two independent suspensions 211 are also present. The independent suspensions 211 are symmetrically fixed to the transverse support beams 21 on both sides of the main beam 20. Each independent suspension 211 is aligned with the transverse support beam 21 through bolt holes. The base of the independent suspension 211 is fixed to the bolt holes of the transverse support beam 21 through bolts, realizing modular installation. The bolt hole positions of the transverse support beam 21 are aligned with the reinforcing crossbeam 11 of the front cargo platform 10 to form a load transmission path. The rodless chamber of the steering cylinder 31 is welded and fixed to the side wall of the main beam 20 through the cylinder fixing seat 35. The extension and retraction direction is perpendicular to the longitudinal axis of the main beam 20. The rod chamber is connected to one end of the steering aircraft plate 32 through a hinge point. The steering aircraft plate 32 is mounted on the main beam 20 around the rotation main shaft 34. Inside the main beam 20, located between the hydraulic cylinder 31 and the tie rod 33, one end is hinged to the rod chamber of the steering cylinder 31, and the other end is connected to the axle via the tie rod 33. The rotating spindle 34 is built into the main beam 20 and fixed by the spindle fixing assembly 36, which is clamped and fixed by the upper and lower welded fixing blocks 362 and bolt locking blocks 361 to ensure that the axis is aligned with the center of the main beam 20. One end of the tie rod 33 is connected to the steering plate 32, and the other end is connected to the axle steering arm, transmitting the extension and retraction force of the steering cylinder 31 to the axle to drive the wheels to steer. The fixing blocks 362 of the spindle fixing assembly 36 are symmetrically welded to the upper and lower surfaces inside the main beam 20, forming a surrounding clamping structure. The locking block 361 is connected to the fixing block 362 by bolts. The fixing block 362 is welded to the main beam 20 to provide a rigid support reference. The locking block 361 is engaged with the threaded hole of the fixing block 362 by bolts to realize the quick disassembly and fixation of the rotating main shaft 34. The cylinder body of the lifting cylinder of the independent suspension 211 is bolted to the transverse support beam 21. The piston rod is connected to the axle. When unloaded, the piston rod is retracted to raise the axle tires and reduce wear. When loaded, the axle height is adjusted to optimize the load distribution. The blade load is transmitted to the reinforcing crossbeam 11 of the front cargo platform 10 through the blade fulcrum 40, and then distributed to the main beam 20 through the transverse support beam 21 to avoid concentrated force on the gooseneck and the front of the vehicle.

[0043] In one embodiment, by welding the front loading platform 10 and the main beam 20 together, the blade support point 40 is set on the reinforcing crossbeam 11 of the front loading platform 10. By utilizing the layout of the front loading platform 10 being lower than the upper surface of the main beam 20, the blade installation height is significantly reduced, thus reducing the risk of transport center of gravity shift. The reinforcing crossbeam 11, as a transverse high-strength steel structure inside the front loading platform 10, is welded together with the blade support point 40 to form a rigid support frame, directly bearing and distributing the blade load to the main beam 20, avoiding local stress concentration on the main beam. At the same time, the transverse support beams 21 on both sides of the main beam 20 are bolted to the independent suspension 211, which are aligned with the reinforcing crossbeam 11 to form a continuous rigid frame, further distributing the load to both sides of the main beam 20, reducing the pressure on the gooseneck and the tractor head, and improving vibration resistance and overall stability. By employing a low-position layout of the front loading platform 10, strengthening the rigid support of the crossbeam 11, and coordinating the dispersion of the transverse support beam 21, this device achieves a low installation height of the blade support point 40 while ensuring structural reliability under high loads, optimizing transportation safety and durability, and solving the technical defects of traditional axles such as high center of gravity and easy wear.

[0044] In one embodiment, the dual independent suspensions 211 are symmetrically arranged on both sides of the main beam 20 via transverse support beams 21. Each suspension independently bears a portion of the blade load, distributing the pressure originally concentrated on the gooseneck and tractor head to both sides of the main beam. Combined with the rigid connection between the independent suspension base and the transverse support beams 21, the load transmission path is optimized, allowing the vertical pressure to be dispersed through the overall structure of the main beam, significantly reducing the burden on the gooseneck and tractor head. The hydraulic cylinder dynamic adjustment function retracts the piston rod to raise the axle tires when unloaded, reducing ground friction loss. When loaded, it automatically balances the load on both sides of the suspension, avoiding uneven wear and mechanical deformation. The blade load is transmitted to the main beam via the reinforcing crossbeam 11 of the front cargo platform 10, and then distributed to the independent suspensions via the transverse support beams 21, bypassing the gooseneck and directly transmitting force, reducing its mechanical wear. The bolted connection between the independent suspensions 211 and the transverse support beams 21 allows flexible displacement to absorb road impacts, and the symmetrical layout balances tire contact pressure, extending tire life. Through the synergistic effect of the above-mentioned symmetrical layout, dynamic adjustment, path optimization and flexible design, this device reduces the pressure on the gooseneck and the front of the vehicle, and reduces mechanical and frictional losses, while achieving stable operation under high load and low maintenance costs, thus solving the systemic defects caused by the concentrated force of traditional axles.

[0045] In one embodiment, the steering system 30 is driven by a vertically arranged steering cylinder 31: the rodless chamber of the cylinder is welded to the side wall of the main beam 20 via a cylinder mounting base 35, and its extension and retraction direction is perpendicular to the longitudinal axis of the main beam 20, so that the thrust acts directly on the steering axis of the axle, reducing energy loss; the rod chamber of the cylinder is connected to one end of the steering aircraft plate 32 via a hinge point, and the other end is linked to the steering arm of the axle via a tie rod 33. When the cylinder extends and retracts, it pushes the steering aircraft plate 32 to rotate around the rotating spindle 34, converting the linear thrust into the left and right steering action of the axle; the rotating spindle 34 is built into the main beam and is clamped and fixed by a fixing assembly 36 consisting of upper and lower welded fixing blocks and bolt locking blocks, ensuring that the axis of the rotating spindle 34 is aligned with the center of the main beam, suppressing vibration and offset, and ensuring steering stability; the hinged connection between the steering aircraft plate 32 and the cylinder and tie rod allows for adaptive angle changes, absorbs road impacts, reduces rigid friction loss, and at the same time, the modular spindle fixing assembly 36 and the standardized hinge design support quick disassembly and maintenance, extending the system life. Through the synergistic effect of vertical thrust drive, articulated transmission and main shaft vibration-resistant fixing, mechanical wear is significantly reduced, perfectly meeting the stringent requirements of high-load blade transport vehicles for steering efficiency and durability under complex road conditions.

[0046] Working principle: The blade support 40 is welded to the reinforcing crossbeam 11 of the front cargo platform 10. The design of the front cargo platform being lower than the main beam 20 reduces the installation height and reduces the risk of center of gravity shift. The blade load is transferred to the front cargo platform 10 and the welded main beam 20 through the reinforcing crossbeam 11, and distributed to the transverse support beams 21 on both sides. It is evenly borne by two independent suspensions 211, avoiding concentrated stress on the gooseneck and the tractor head. The independent suspensions 211 are dynamically adjusted by lifting cylinders. When unloaded, the axle tires are raised to reduce friction. When loaded, the height is automatically balanced to optimize load distribution. Its bolted connection design allows for small displacements to absorb road impacts. In the steering system 30, the steering cylinder 31, which is vertically fixed to the main beam 20, drives the axle to steer through the hinged steering plate 32 and tie rod 33. The rotating main shaft 34 is double-sided clamped by the upper and lower fixing blocks 362 and bolt locking blocks 361 to ensure stability. The hinged connection reduces mechanical wear. The modular design supports quick replacement of the independent suspensions 211 and non-destructive disassembly of the rotating main shaft 34. The combination of flexible connection and symmetrical load distribution extends the service life of components. With its low center of gravity installation, intelligent load distribution, precise steering control, and convenient maintenance, this device comprehensively solves the problems of high center of gravity, easy wear, and difficult maintenance of traditional axles, providing an efficient and reliable solution for the transportation of large blades.

[0047] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A blade-type independent front axle structure, disposed between the front cargo platform (10) and the main beam (20) behind the semi-trailer cab, characterized in that, include: The front loading platform (10) and the main beam (20) are welded together. The front loading platform (10) is provided with a reinforcing crossbeam (11). The main beam (20) is provided with transverse support beams (21) on both sides. The front loading platform (10) is provided with a blade support point (40). The blade support point (40) is welded to the reinforcing crossbeam (11). Two independent suspensions (211) are respectively fixed to the transverse support beam (21) by bolts; The steering system (30) includes a steering cylinder (31), a steering plate (32), a tie rod (33), a rotary spindle (34), a cylinder mounting base (35), and a spindle mounting assembly (36); The cylinder mounting base (35) is welded to the main beam (20) and fixes the rodless cavity of the steering cylinder (31). The rotating spindle (34) is installed inside the main beam (20) through the spindle fixing assembly (36). One end of the steering plate (32) is hinged to the rod chamber of the steering cylinder (31), and the other end is connected to the axle through the tie rod (33).

2. The independent axle structure at the front of the blade vehicle according to claim 1, characterized in that: The spindle fixing assembly (36) includes a fixing block (362) welded inside the main beam (20) and a locking block (361) connected to the fixing block (362) by bolts. The locking block (361) is provided with bolts that mate with threaded holes on the fixing block (362).

3. The independent axle structure at the front of the blade vehicle according to claim 1, characterized in that: The fixing block (362) is welded to both the upper and lower surfaces inside the main beam (20), and the locking block (361) is fixed to the rotating spindle (34) by bolts.

4. The independent axle structure at the front of the blade vehicle according to claim 1, characterized in that: The bolt holes on the transverse support beam (21) are aligned with the reinforcing beam (11) of the front cargo platform (10).

5. The independent axle structure at the front of the blade vehicle according to claim 1, characterized in that: The extension and retraction direction of the steering cylinder (31) is perpendicular to the longitudinal axis of the main beam (20) and is hinged to the steering aircraft plate (32).

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