Multi-functional snow plough truck arch beam

Abstract

The application discloses a multi-functional snow removing vehicle arch-shaped girder, and belongs to the field of snow removing equipment manufacturing, which comprises a snow pushing shovel mounting support and a plurality of transverse beam assemblies, the two ends of the snow pushing shovel mounting support and the transverse beam assemblies are rigidly connected with two arch-shaped longitudinal girders respectively; the arch-shaped longitudinal girder adopts a multi-section bending and welding structure, and is sequentially divided into a front straight mounting section, a front inclined transition bending section, a middle arch-shaped bearing section, a rear inclined transition bending section and a rear straight mounting section along the length direction, and a splicing reinforcing plate is attached and welded to the inner side of the splicing butt joint between the front inclined transition bending section and the middle arch-shaped bearing section and between the middle arch-shaped bearing section and the rear inclined transition bending section; the mounting hole of the front straight mounting section is used for assembling the snow pushing shovel, the inner side of the middle arch-shaped bearing section forms an upwardly arched hollow space for assembling a snow sweeping brush, and the mounting hole of the rear straight mounting section is used for assembling a snow blowing fan. The application provides a multi-functional snow removing vehicle arch-shaped girder which can simultaneously improve the overall strength and driving stability of the vehicle frame.

Description

Technical Field

[0001] This invention belongs to the field of snow removal equipment manufacturing and relates to an arched beam adapted to a multi-functional snow removal vehicle. Background Technology

[0002] Multi-functional snowplows are increasingly used in highways, airport runways, and other similar applications. These vehicles typically feature an independent auxiliary engine drive system, requiring a snowplow mounted at the front of the chassis, a snow sweeping brush installed in the middle, and a snow blower fixed at the rear to achieve simultaneous pushing, sweeping, and blowing operations. The original chassis of existing models uses a straight longitudinal beam structure. However, in actual modifications and long-term use, several drawbacks have been found in this structure when used for three-in-one snow removal operations: First, there is insufficient installation space in the middle. The web height of the straight longitudinal beam is limited. After the large-diameter snow sweeper is installed, it either interferes with the frame or the ground clearance is insufficient. In practice, the snow sweeper can only be removed and a snowplow can be used alone, or vice versa. It is impossible to have three sets of equipment online at the same time. As a result, the work efficiency is not high, and a snow removal trip has to be made several times.

[0003] Secondly, stress concentration leads to premature frame failure. The instantaneous impact load during snowplow operation and the continuous high-torque alternating load of the snow sweeper are concentrated in the middle of the frame. In addition, the straight longitudinal beams do not have a dedicated stress-dispersing structure, and the welds and webs are subjected to alternating stress cycles. It is not uncommon for the longitudinal beams to bend and deform and the splicing welds to crack after a snow removal season. In severe cases, it can even affect the safety of the entire vehicle.

[0004] Third, the high center of gravity affects driving stability. The flat frame itself has a limited height, and after the snow sweeper and snow blower are installed together, the center of gravity of the whole vehicle is further raised. When snow removal is carried out at high speed, the vehicle body tilts significantly, and there is a lack of confidence in handling when turning and changing lanes.

[0005] Previously, attempts were made to strengthen the flat frame locally and raise the mounting brackets, but either the strength problem was solved but the center of gravity was raised, or the installation space was freed up but the structural rigidity was sacrificed, and it was never possible to achieve both. Summary of the Invention

[0006] This invention provides an arched main beam for a multi-functional snowplow, which solves the problems mentioned in the background art, such as insufficient installation space in the middle, stress concentration leading to early failure, and high center of gravity of the vehicle. Through optimization of the longitudinal beam configuration, zoned load-bearing design and node reinforcement, the snowplow, snow sweeper and snow blower can be installed simultaneously, while improving the overall strength of the frame and driving stability.

[0007] To solve the above problems, the technical solution adopted by the present invention is as follows: It includes a snowplow mounting bracket, multiple crossbeam assemblies, and two symmetrically arranged arched longitudinal beams. The two ends of the snowplow mounting bracket and the multiple crossbeam assemblies are rigidly connected to the two arched longitudinal beams, forming a complete vehicle frame. The arched longitudinal beams adopt a multi-segment bent and welded structure made of low-temperature resistant high-strength steel plates, and are sequentially divided along the length direction into a front straight mounting section, a front oblique transition bending section, a middle arched load-bearing section, a rear oblique transition bending section, and a rear straight mounting section. The inner side of the splicing joint between the oblique transition bend section and the middle arched load-bearing section, and between the middle arched load-bearing section and the rear oblique transition bend section, is welded with splicing reinforcement plates; the outer wing surface of the arched longitudinal beam is provided with mounting holes, the mounting holes of the front straight mounting section are used to assemble snowplows, the inner side of the middle arched load-bearing section forms an upward arched hollow clearance space for assembling snow sweeping rollers, the hollow clearance cavity provides space for the arrangement of large-diameter snow sweeping rollers and lowers the center of gravity of the vehicle, and the mounting holes of the rear straight mounting section are used to assemble snow blowers.

[0008] More specific technical solutions to the above technical solutions may include: the splicing reinforcing plate completely covers the inner area of ​​the segmented splicing weld, the thickness of the splicing reinforcing plate is ≥10mm, and the four sides of the splicing reinforcing plate are fully welded and sealed to the arched longitudinal beam body to offset the stress concentration of the weld caused by the impact of the snowplow and the large torque rotation of the snow sweeper, thus adapting to the heavy-load impact conditions of the snow sweeper roller.

[0009] Furthermore, the multiple crossbeam assemblies consist of two front crossbeam assemblies, two middle connecting crossbeam assemblies, and one rear crossbeam assembly. The two front crossbeam assemblies, the two middle connecting crossbeam assemblies, and the one rear crossbeam assembly are spaced apart between the two arched longitudinal beams, forming a closed spatial rigid frame, which improves the overall bending and torsional resistance and buffers the continuous vibration and impact generated by snowplow impact, roller rotation, and fan operation.

[0010] Furthermore, the mounting holes of the front straight mounting section, the middle arched bearing section, and the rear straight mounting section are all standardized through holes of uniform specifications. The hole positions of the three sections are independent of each other, which can simultaneously complete the assembly and fixing of snowplows, large snow sweeping rollers, and snow blowers, realizing three-in-one synchronous snow removal operations.

[0011] Furthermore, the snowplow mounting bracket, the front crossbeam assembly, the middle connecting crossbeam assembly, and the rear crossbeam assembly are all locked to the flange of the arched longitudinal beam by high-strength rivets, and the front crossbeam assembly, the middle connecting crossbeam assembly, and the rear crossbeam assembly have reserved mounting positions for hydraulic oil tanks, transmission transfer cases, and auxiliary engines.

[0012] By adopting the above technical solution, the present invention has the following advantages compared with the prior art: 1. Significantly improved space utilization: The central arched clearance cavity provides sufficient installation height and ground clearance for the large-diameter snow sweeping roller brush, solving the problem that the flat frame cannot accommodate the large roller brush. The three sets of operating devices can be online simultaneously, and the three processes of pushing, sweeping and blowing can be completed in one operation.

[0013] 2. Stress dispersion and extended structural life: The arched structure itself has a stress dispersion effect. Combined with the fully welded structure of the reinforcing plate on the inside of the splice joint, the impact of snowplowing and the torque load of the roller brush are smoothly transmitted along the longitudinal beam, avoiding local stress concentration. Actual bench tests show that under the same working conditions, the fatigue life of the weld of the arched beam is significantly improved compared with that of the straight structure.

[0014] 3. Lower center of gravity and improved driving stability: The arched longitudinal beam with its central arch and both ends lowered position lowers the snow sweeper relative to the vehicle's center of gravity. Combined with the low center of gravity layout of the closed rigid frame of the crossbeam, the body roll is reduced during high-speed snow removal operations, and steering and lane changing are more stable. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the outer side of the arched longitudinal beam of the present invention.

[0017] Figure 3 This is a schematic diagram of the inner side of the arched longitudinal beam of the present invention.

[0018] In the diagram: 1. Arched longitudinal beam; 1-1. Front straight installation section; 1-2. Front sloping transition bend section; 1-3. Middle arched load-bearing section; 1-4. Rear sloping transition bend section; 1-5. Rear straight installation section; 1-6. Splicing reinforcing plate; 2. Snowplow mounting bracket; 3. Front crossbeam assembly; 4. Middle connecting crossbeam assembly; 5. Rear crossbeam assembly. Detailed Implementation

[0019] The invention will be further described in detail below with reference to the accompanying drawings and examples: like Figures 1 to 3The multi-functional snowplow's arched frame includes a snowplow mounting bracket 2, two front crossbeam assemblies 3, two central connecting crossbeam assemblies 4, a rear crossbeam assembly 5, and two symmetrically arranged arched longitudinal beams 1. The snowplow mounting bracket 2, the two front crossbeam assemblies 3, the two central connecting crossbeam assemblies 4, and the rear crossbeam assembly 5 are rigidly connected at both ends to the two arched longitudinal beams 1, forming a closed-space rigid frame. This improves the overall bending and torsional resistance, buffers the continuous vibration and impact generated by snowplowing, brush rotation, and fan operation, and together constitutes the vehicle's load-bearing frame. The arched longitudinal beams 1 adopt a multi-segment bent and welded structure made of low-temperature resistant high-strength steel plates, and are divided along the length direction into a front straight installation section 1-1 and a front oblique transition section. The inner sides of the splicing joints between the bending section 1-2, the middle arched load-bearing section 1-3, the rear oblique transition bending section 1-4, and the rear straight installation section 1-5, as well as between the front oblique transition bending section 1-2 and the middle arched load-bearing section 1-3, and between the middle arched load-bearing section 1-3 and the rear oblique transition bending section 1-4, are all welded with splicing reinforcing plates 1-6. Mounting holes are opened on the outer flange of the arched longitudinal beam 1. The mounting holes of the front straight installation section 1-1 are used to assemble snowplows. The inner side of the middle arched load-bearing section 1-3 forms an upwardly arched hollow clearance space for assembling snow sweeping rollers. This hollow clearance cavity provides space for the arrangement of large-diameter snow sweeping rollers and lowers the center of gravity of the vehicle. The mounting holes of the rear straight installation section 1-5 are used to assemble snow blowers. The splicing reinforcement plate 1-6 completely covers the inner area of ​​the segmented splicing weld seam. The thickness of the splicing reinforcement plate 1-6 is ≥10mm. The four sides of the splicing reinforcement plate 1-6 are fully welded and sealed to the arched longitudinal beam 1 body, which offsets the stress concentration of the weld seam caused by the impact of the snowplow and the high torque rotation of the snow sweeper, and is suitable for the heavy-load impact conditions of the snow sweeper roller. The mounting holes of the front straight installation section 1-1, the middle arched load-bearing section 1-3, and the rear straight installation section 1-5 are all standardized through holes of uniform specification. The hole positions of the three sections are independent of each other, which can simultaneously complete the assembly and fixing of the snowplow, large snow sweeper roller, and snow blower, realizing the three-in-one synchronous snow removal operation. The snowplow mounting bracket 2, the front crossbeam assembly 3, the middle connecting crossbeam assembly 4, and the rear crossbeam assembly 5 are all locked to the wing surface of the arched longitudinal beam 1 by high-strength rivets. The front crossbeam assembly 3, the middle connecting crossbeam assembly 4, and the rear crossbeam assembly 5 have reserved mounting positions for hydraulic oil tanks, transmission transfer cases, and auxiliary engines.

[0020] It should be noted that the specific embodiments of the present invention have been described in detail. For those skilled in the art, various obvious changes made to it without departing from the spirit and scope of the present invention are within the protection scope of the present invention.

Claims

1. An arched beam for a multi-functional snowplow, characterized in that: The device includes a snowplow mounting bracket, multiple crossbeam assemblies, and two symmetrically arranged arched longitudinal beams. Both ends of the snowplow mounting bracket and the multiple crossbeam assemblies are rigidly connected to the two arched longitudinal beams. The arched longitudinal beams employ a multi-segment bent and welded structure, sequentially divided along their length into a front straight installation section, a front oblique transition bent section, a middle arched load-bearing section, a rear oblique transition bent section, and a rear straight installation section. Reinforcing plates are welded to the inner sides of the splicing joints between the front oblique transition bent section and the middle arched load-bearing section, and between the middle arched load-bearing section and the rear oblique transition bent section. Mounting holes are provided on the outer flanges of the arched longitudinal beams. The mounting holes in the front straight installation section are used to assemble snowplows, the inner side of the middle arched load-bearing section forms an upward-arched hollow space for assembling snow sweeping brushes, and the mounting holes in the rear straight installation section are used to assemble snow blowers.

2. The arched beam of the multi-functional snowplow according to claim 1, characterized in that: The splicing reinforcement plate completely covers the inner area of ​​the segmented splicing weld, the thickness of the splicing reinforcement plate is ≥10mm, and the four sides of the splicing reinforcement plate are fully welded and sealed to the arched longitudinal beam body.

3. The arched beam of the multi-functional snowplow according to claim 2, characterized in that: The multiple crossbeam assemblies are two front crossbeam assemblies, two middle connecting crossbeam assemblies, and one rear crossbeam assembly. The two front crossbeam assemblies, the two middle connecting crossbeam assemblies, and the one rear crossbeam assembly are arranged at intervals between the two arched longitudinal beams.

4. The arched beam of the multi-functional snowplow according to claim 3, characterized in that: The mounting holes of the front straight mounting section, the middle arched bearing section, and the rear straight mounting section are all standardized through holes of uniform specifications.

5. The arched beam of the multi-functional snowplow according to claim 4, characterized in that: The snowplow mounting bracket, the front crossbeam assembly, the middle connecting crossbeam assembly, and the rear crossbeam assembly are all locked to the flange of the arched longitudinal beam by rivets, and the front crossbeam assembly, the middle connecting crossbeam assembly, and the rear crossbeam assembly have reserved mounting positions for hydraulic oil tanks, transmission transfer cases, and auxiliary engines.

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