Traction device convenient for direction control and pavement cold recycling machine

Abstract

The invention discloses a traction device convenient for direction control and a pavement cold recycling machine, and belongs to the technical field of special mechanical equipment for roads. The traction device comprises a frame, and a cab assembly, a hood assembly, a fender and a front wheel assembly which are mounted on the frame; the hood assembly is arranged on the front portion of the cab assembly, the mud guards are arranged on the two sides of the cab assembly, the front wheel assembly is located below the cab assembly, and the mud guards are located above wheels of the front wheel assembly; front wheel rearview mirrors are arranged on the two sides of the front end of the hood assembly, and the rear end of the hood assembly is of a chamfered structure contracting inwards. The cab assembly comprises a cab framework and a front window installed on the cab framework, and the front window is arc glass composed of a left arc face, a middle arc face and a right arc face. The fender is provided with a notch structure. Under the condition that the length of the whole machine is not increased, the turning radius is reduced, the flexibility of the whole machine is improved, and a driver can conveniently obtain the steering state of the front wheels.

Description

Technical Field

[0001] This invention belongs to the technical field of road special machinery and equipment, and particularly relates to a traction device that facilitates directional control and a road surface cold recycling machine. Background Technology

[0002] A cold road recycling machine refers to a technology that uses a milling rotor to cold-mill and crush asphalt (or lime-soil) road surfaces on-site, and mixes in a certain amount of new aggregates, recycled binders, active additives (cement, lime, etc.) and water. After processes such as ambient temperature mixing, paving, and compaction, the old asphalt (or lime-soil) road surface is recycled in one go.

[0003] Cold road recycling machines use a traction device for directional control. This device typically employs hydraulic steering, and for cost and reliability reasons, it generally lacks automatic steering return. This means that during directional control, the tire rotation angle cannot be matched to the steering wheel angle, requiring the operator to frequently observe and adjust the tires' actual rotation angle to ensure proper machine operation. Currently, most mainstream small and medium-sized cold road recycling machines place the cab in the middle of the machine for easy rear-view observation of the working equipment. However, this central cab position places the front wheels near the bottom of the cab, making it difficult to observe their steering. Some manufacturers move the cab rearward to allow for better observation of the front wheels, but this increases the overall machine length and turning radius. Furthermore, the mudguards above the front wheels significantly obstruct the operator's view of the tires, making it difficult to directly observe tire steering during operation and construction, resulting in driving inconvenience and impacting road paving quality. Summary of the Invention

[0004] The purpose of this invention is to provide a traction device and a cold road recycling machine that facilitates directional control, in order to solve the problem that the traction device of the existing cold road recycling machine cannot observe the steering state of the front wheel, resulting in substandard road paving quality.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows:

[0006] In a first aspect, the present invention provides a traction device that facilitates directional control, comprising: a frame and a cab assembly, a hood assembly, a mudguard and a front wheel assembly mounted on the frame;

[0007] The engine hood assembly is located at the front of the cab assembly, the mudguards are located on both sides of the cab assembly, the front wheel assembly is located below the cab assembly, and the mudguards are located above the wheels of the front wheel assembly.

[0008] The front wheel rearview mirrors are disposed on both sides of the front end of the hood assembly, and the rear end of the hood assembly is a chamfered structure that tapers inward.

[0009] The cab assembly includes a cab frame and a front window mounted on the cab frame. The front window is an arc-shaped glass composed of a left arc surface, a middle arc surface and a right arc surface.

[0010] The front end of the mudguard has a notch structure, through which the wheel portion of the front wheel assembly is exposed.

[0011] The left or right arc surface, as well as the chamfered structure, front wheel rearview mirror, notch structure, and exposed wheel portion on the same side as the left or right arc surface, are within the same field of view.

[0012] The apex of the chamfered structure corresponds to the transition point of the middle arc surface to the left or right arc surface.

[0013] The front wheel rearview mirror is mounted on the hood assembly via a mounting bracket. The mounting bracket is a rotatable structure used to adjust the angle and position of the front wheel rearview mirror.

[0014] The frame edge and mudguard on the side of the engine hood assembly form the cab walkway, and the width of the cab walkway is not less than 40cm.

[0015] The front window is a one-piece molded glass, and the front window is tilted forward at an angle of 6.5°±1°.

[0016] The curvature radius of the left and right arc surfaces is 300mm-400mm, and the curvature radius of the middle arc surface is 3400mm-3600mm.

[0017] Secondly, the present invention provides a road surface cold recycling machine towed by the aforementioned traction device that facilitates directional control, comprising: a traction device, a rear frame, and a rear wheel assembly and a working device mounted on the rear frame, wherein the rear frame is bolted to the frame of the traction device that facilitates directional control.

[0018] Beneficial effects: The traction device and road cold recycling machine of the present invention, which facilitates directional control, reduce the turning radius without increasing the overall length of the machine, improve the flexibility of the machine, facilitate the driver's access to the steering status of the front wheels, and allow manual adjustment of the rotation angle of the hydraulic steering system without active return-to-center function; based on the original equipment, by upgrading and modifying the external structure of the traction device that facilitates directional control, the field of vision can be broadened, making it easier for the driver to access the status of the front wheels, thereby achieving accurate control of the forward direction and improving the quality of road paving. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the traction device for easy direction control according to the present invention;

[0020] Figure 2This is a schematic diagram of the cab assembly of the present invention;

[0021] Figure 3 This is a schematic diagram of the front window structure of the present invention.

[0022] Figure 4 This is a schematic diagram of the structure of the hood assembly of the present invention;

[0023] Figure 5 This is a schematic diagram of the mudguard structure of the present invention;

[0024] Figure 6 This is a schematic diagram of the overall structure of the cold road recycling machine of the present invention.

[0025] Among them, 1-cab assembly; 11-cab frame; 12-front window; 121-left arc surface; 122-middle arc surface; 123-right arc surface; 2-mudguard; 21-notch structure; 3-frame; 4-front wheel assembly; 5-front wheel rearview mirror; 6-engine hood assembly; 61-engine hood; 62-angled structure; 7-rear frame; 8-rear wheel assembly; 9-working device. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1

[0028] refer to Figures 1 to 5 As shown, a traction device that facilitates directional control includes: a frame 3 and a cab assembly 1, a hood assembly 6, a mudguard 2, and a front wheel assembly 4 mounted on the frame 3;

[0029] The engine hood assembly 6 is located at the front of the cab assembly 1, the mudguards 2 are located on both sides of the cab assembly 1, the front wheel assembly 4 is located below the cab assembly 1, and the mudguards 2 are located above the wheels of the front wheel assembly 4.

[0030] The front wheel rearview mirrors 5 are provided on both sides of the front end of the hood assembly 6, and the rear end of the hood assembly 6 is an inwardly tapering chamfered structure 62.

[0031] The cab assembly 1 includes a cab frame 11 and a front window 12 mounted on the cab frame 11. The front window 12 is an arc-shaped glass composed of a left arc surface 121, a middle arc surface 122 and a right arc surface 123.

[0032] The front end of the mudguard 2 has a notch structure 21, through which the wheel portion of the front wheel assembly 4 is exposed.

[0033] In this embodiment, the cab assembly 1 includes a cab frame 11 and a front window 12 mounted on the cab frame 11. The front window 12 is tilted forward at 6.5°±1°. The front window 12 is a one-piece curved glass, avoiding the problem of obstructed vision caused by splicing porous glass. The front window 12 can be divided into: a left curved surface 121, a middle curved surface 122, and a right curved surface 123. The left curved surface 121 and the right curved surface 123 have a large curvature (radius of curvature R300mm-R400mm), which can increase the driver's field of vision. The middle curved surface 122 has a small curvature (radius of curvature R3400mm-R3600mm), which can prevent the driver's field of vision from being distorted and reduce the difficulty of processing.

[0034] In this embodiment, the front wheel rearview mirror 5 is mounted to the side of the front end of the hood assembly 6 via a mounting bracket. The mounting bracket is a rotatable structure, and the angle and position of the front wheel rearview mirror 5 can be adjusted via the mounting bracket. The side of the rear end of the hood assembly 6 is a chamfered structure 62 that narrows inward. The left and right chamfers of the chamfered structure 62 correspond to the transition points from the left arc surface 121 and the right arc surface 123 of the front window 12 to the middle arc surface 122, respectively.

[0035] In this embodiment, the mudguard 2 is provided with a notch structure 21 to expose the front wheel within the field of vision of the front wheel rearview mirror 5. The driver can observe the rotation angle of the wheel through the left arc surface 121 / right arc surface 123, the chamfer structure 62, the front wheel rearview mirror 5, and the notch structure 21, which facilitates the driver's operation.

[0036] In this embodiment, the engine hood assembly 6 includes an engine hood 61 and a power system disposed inside the engine hood. The side of the frame 3 and the mudguard 2 on the side of the engine hood assembly 6 form a cab walkway, which serves as the passage for the driver to enter the cab. The width of the cab walkway is not less than 40cm. The chamfered structure 62 can compensate for the problem of reduced passage size caused by the notch structure 21, ensuring that drivers of various body types can enter the cab smoothly. The side of the driver walkway is also equipped with a safety railing or handrail to ensure the safety of the driver during the process of getting on and off. The power system includes an engine and a transmission system, which are used to provide power to the entire traction device.

[0037] Example 2

[0038] refer to Figure 6As shown, a road surface cold recycling machine includes the traction device described in Embodiment 1, a rear frame 7, a working device 9, and a rear wheel assembly 8. The rear frame 7 is bolted to the frame 3 for integral connection. The working device 9 is mounted on the rear frame 7 and is used for crushing and mixing the road surface during recycling. The rear wheel assembly 8 is mounted on the rear frame 7 and serves for load-bearing and movement.

[0039] In summary, the traction device and cold road recycling machine of the present invention, which facilitates directional control, reduce the turning radius and improve the overall flexibility of the machine without increasing its overall length. It also allows the driver to easily obtain the steering status of the front wheels and manually adjust the rotation angle of the hydraulic steering system without active return-to-center function. Furthermore, by upgrading the external structure of the traction device, which facilitates directional control, the driver's field of vision can be broadened, making it easier to obtain the front wheel status and thus achieving accurate control of the forward direction, thereby improving the quality of road paving.

[0040] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and 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, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0041] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0042] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A traction device for facilitating directional control, characterised in that, The utility model relates to a vehicle frame structure, which comprises: a vehicle frame and a cab assembly, a bonnet assembly, a fender and a front wheel assembly mounted on the vehicle frame; the bonnet assembly is arranged at the front of the cab assembly, the fenders are arranged on both sides of the cab assembly, the front wheel assembly is located below the cab assembly, and the fenders are located above the wheels of the front wheel assembly; the front wheel rearview mirrors are arranged on the two side faces of the front end of the bonnet assembly, and the rear end of the bonnet assembly is a concave corner structure; the cab assembly comprises a cab framework and a front window mounted on the cab framework, and the front window is a circular arc glass composed of a left arc face, a middle arc face and a right arc face; the front end of the fender has a notch structure, and the wheels of the front wheel assembly are partially exposed to the notch structure.

2. The traction device for ease of directional control of claim 1, wherein, the left arc face or the right arc face, the concave corner structure on the same side of the left arc face or the right arc face, the front wheel rearview mirror, the notch structure and the wheel exposed part are in the same visual field range.

3. The traction device for ease of directional control of claim 1, wherein, the top angle of the concave corner structure corresponds to the transition of the middle arc face to the left arc face or the right arc face.

4. The traction device for ease of directional control of claim 1, wherein, the front wheel rearview mirror is mounted on the bonnet assembly through a mounting bracket, the mounting bracket is a rotatable structure, and is used for adjusting the angle and position of the front wheel rearview mirror.

5. The traction device for ease of directional control of claim 1, wherein, the frame edge of the side of the bonnet assembly and the fender constitute a cab walkway, and the width of the cab walkway is not less than 40 cm.

6. The traction device for ease of directional control of claim 1, wherein, the front window is an integrally formed glass, the front window is inclined forward, and the inclination angle is 6.5°±1°.

7. The traction device for ease of directional control of claim 1, wherein, the curvature radius of the left arc face and the right arc face is 300mm-400mm, and the curvature radius of the middle arc face is 3400mm-3600mm.

8. A cold-in-place recycling machine towed by the towing device according to any one of claims 1 to 7, characterized in that, The utility model relates to a vehicle frame structure, which comprises: a traction device, a rear frame, and a rear wheel assembly and a working device mounted on the rear frame, and the rear frame is connected to the frame of the traction device facilitating direction control through bolts.

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