A sheet metal A-beam trailer-type RV chassis assembly

Abstract

The present invention discloses a sheet metal A-beam trailer-type RV chassis assembly, which relates to the technical field of chassis assemblies, including: a high-strength A-beam subassembly, which is tightly connected to the RV body floor; an inertia pull rod subassembly, which is assembled on the high-strength A-beam subassembly and connected to the tractor; an independent suspension subassembly, which is connected to the high-strength A-beam subassembly and the tail end of the inertia pull rod subassembly, and is also tightly connected to the RV body floor; a wheel hub tire, which is connected to both sides of the independent suspension subassembly; and a guide wheel subassembly, which is connected to the head end of the inertia pull rod subassembly. The high-strength A-beam subassembly is symmetrically provided with a first manually adjustable leg on both sides, and the tail of the independent suspension subassembly is symmetrically provided with a second manually adjustable leg, and the first manually adjustable leg and the second manually adjustable leg are both tightly connected to the RV body floor. The present application greatly reduces the overall weight of the chassis, improves safety and comfort, and has off-road performance.

Description

Technical Field

[0001] The invention relates to the technical field of chassis assemblies, and in particular to a sheet metal A-beam trailer-type caravan chassis assembly. Background Art

[0002] In recent years, with the significant improvement of people's living standards, trailer RVs, as a means of transportation that relies on tractor power and brings great convenience to travel and leisure life, have experienced vigorous development and widespread popularity. However, this type of RV has long faced some problems that are difficult to ignore: its chassis design is often heavy, and during long-distance travel, the tractor power requirements are also higher, which can easily cause problems such as fatigue driving.

[0003] The above situation not only increases the safety risks during driving, but also affects the overall comfort and controllability. Especially when facing complex and changeable off-road conditions, the limitations of traditional trailer RVs are particularly obvious. They lack the necessary off-road performance and are difficult to meet consumers' comprehensive considerations of safety, comfort and adventure needs. Summary of the invention

[0004] The purpose of the present invention is to provide a sheet metal A-beam trailer-type caravan chassis assembly, which greatly reduces the overall weight of the chassis, improves safety and comfort, and has off-road performance.

[0005] To achieve the above purpose, the technical solution of the present application is: a sheet metal A-beam trailer RV chassis assembly, comprising:

[0006] High-strength A-beam subassembly, firmly connected to the RV body floor;

[0007] The inertia tie rod sub-assembly is assembled on the high-strength A-beam sub-assembly and connected to the tractor;

[0008] The independent suspension sub-assembly is connected to the high-strength A-beam sub-assembly and the rear end of the inertia tie rod sub-assembly, and is also firmly connected to the floor of the RV body;

[0009] Wheels and tires are connected to both sides of the independent suspension sub-assembly;

[0010] The guide wheel sub-assembly is connected to the head end of the inertia pull rod sub-assembly.

[0011] As a preferred solution of the present invention, the high-strength A-beam sub-assembly is symmetrically provided with a first manually adjustable leg on both sides, and the independent suspension sub-assembly is symmetrically provided with a second manually adjustable leg at the rear, and the first manually adjustable leg and the second manually adjustable leg are both fastened to the RV body floor.

[0012] As a preferred solution of the present invention, the first manually adjustable leg and the second manually adjustable leg have the same structure and both include a threaded screw installed on an adjusting bracket, one end of the threaded screw extends out of the adjusting bracket as an adjusting part, a slider is rotatably connected to the threaded screw, and the slider is connected to the supporting frame, and both sides of the middle part of the supporting frame are connected to the adjusting bracket through pull rods respectively.

[0013] As a preferred embodiment of the present invention, the independent suspension sub-assembly includes a rectangular frame, a special-shaped frame, a spring and an axle head. The two sides of the rectangular frame are connected to the special-shaped frames extending inwardly through a rotating shaft. The special-shaped frame is connected to a curved plate. A support shaft connected to the rectangular frame is provided on the curved plate, and a spring is sleeved on the outside of the support shaft. An axle head is provided at the end of the curved plate, and the axle head is connected to the wheel hub tire.

[0014] As a preferred solution of the present invention, the inertia pull rod subassembly includes a tractor, an inertia hydraulic brake, a brake pull rod, and a brake cable, wherein the tractor is connected to the inertia hydraulic brake, the inertia hydraulic brake is connected to the brake cable through the brake pull rod, and the brake cable is traction-connected to the shaft head; the brake pull rod slides back and forth in the through holes of a plurality of brackets, and each bracket is fastened to the floor of the RV body.

[0015] As a preferred solution of the present invention, the guide wheel subassembly includes a double-row guide wheel, a height-adjustable worm gear and a manual crank. The double-row guide wheel and the manual crank are respectively connected to the bottom and top of the height-adjustable worm gear. The height-adjustable worm gear is also connected to the inertia hydraulic brake.

[0016] As a preferred solution of the present invention, the inertia hydraulic brake is fixed to the high-strength A-beam sub-assembly via an inertia brake connecting plate.

[0017] As a preferred embodiment of the present invention, the high-strength A-type beam subassembly includes a first hot-formed high-strength longitudinal beam and a second hot-formed high-strength longitudinal beam, and a hot-formed high-strength cross beam is connected between the first hot-formed high-strength longitudinal beam and the second hot-formed high-strength longitudinal beam, and the three are connected in an A-shape.

[0018] As a preferred solution of the present invention, a plurality of ear pieces are distributed on the first thermoformed high-strength longitudinal beam and the second thermoformed high-strength longitudinal beam for fastening connection with the RV body floor; the tail ends of the first thermoformed high-strength longitudinal beam and the second thermoformed high-strength longitudinal beam are arranged in parallel and are equipped with independent suspension clips for fastening connection with the RV body floor and the independent suspension.

[0019] As a preferred solution of the present invention, when parking, the RV is first parked under the action of the inertia pull rod sub-assembly, and then the guide wheel sub-assembly is manually adjusted to make the double-row guide wheels fall down and contact closely with the ground to play a pre-support role; then the tractor ball head is unhooked from the tractor; finally, the first manual adjustment leg and the second manual adjustment leg are dropped and contact closely with the ground, and the RV body is straightened by adjusting the first manual adjustment leg and the second manual adjustment leg.

[0020] The present invention adopts the above technical solution, and can achieve the following technical effects:

[0021] 1. The high-strength A-beam sub-assembly structure is more compact and stable. Compared with the traditional rectangular cold-stamped horizontal and longitudinal beam structure, it greatly reduces the weight while meeting high safety requirements.

[0022] 2. Equipped with independent suspension and 17-inch large wheels, it effectively improves the comfort and off-road performance of the RV.

[0023] 3. Equipped with an inertia pull rod sub-assembly, it adds an "insurance" for parking safety before and after the manual adjustment legs fall, which can further improve the parking safety performance.

[0024] 4. The manually adjustable outriggers have an independent leveling function, allowing the RV to adapt to certain potholes, slopes and other harsh parking road conditions, further improving parking comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 It is a schematic diagram of the structure of the chassis assembly of a sheet metal A-beam trailer-type RV;

[0027] Figure 2 This is the application diagram of the sheet metal A-beam trailer RV chassis assembly;

[0028] Figure 3 This is a schematic diagram of the high-strength A-beam subassembly structure;

[0029] Figure 4 It is a schematic diagram of the structure of the inertia pull rod sub-assembly;

[0030] Figure 5 It is a schematic diagram of the structure of the independent suspension subassembly;

[0031] Figure 6This is a schematic diagram of the structure of the guide wheel sub-assembly;

[0032] Figure 7 It is a schematic diagram of the structure of the second manually adjustable leg.

[0033] Description of the serial numbers in the figure: 1. High-strength A-beam subassembly; 1.1. First hot-formed high-strength longitudinal beam; 1.2. Second hot-formed high-strength longitudinal beam; 1.3. Hot-formed high-strength cross beam; 1.4. Ear piece; 1.5. Independent suspension clamp; 2. Inertia pull rod subassembly; 2.1. Retractor; 2.2. Inertia hydraulic brake; 2.3. Inertia brake connecting plate; 2.4. Brake pull rod; 2.5. Bracket; 2.6. Brake cable; 3. Independent suspension Sub-assembly; 3.1, rectangular frame; 3.2, special-shaped frame; 3.3, bent plate; 3.4, spring; 3.5, shaft head; 4, wheel hub tire; 5, first manual adjustment leg; 5.1, manual crank; 5.2, height adjustment worm gear; 5.3, double-row guide wheel; 6, second manual adjustment leg; 6.1, adjustment bracket; 6.2, slider; 6.3, threaded screw; 6.4, support frame; 6.5, pull rod; 6.6, adjustment part. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined. "Several" means one or more, unless otherwise clearly and specifically defined.

[0037] In the description of the present application, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] like Figure 1-2 As shown, this embodiment provides a sheet metal A-beam trailer type RV chassis assembly, including:

[0040] The high-strength A-beam sub-assembly is firmly connected to the RV body floor and can effectively support the RV;

[0041] The inertia tie rod sub-assembly is mounted on the high-strength A-beam sub-assembly and connected to the tractor, adding an extra layer of insurance to parking safety and further improving parking safety performance;

[0042] The independent suspension sub-assembly is connected to the high-strength A-beam sub-assembly and the tail end of the inertia tie rod sub-assembly, and is also firmly connected to the floor of the RV body, which can effectively absorb the vibration caused by uneven road surface and improve riding comfort;

[0043] The wheel hub tires are connected to both sides of the independent suspension sub-assembly; the 17-inch large wheel hub effectively improves the comfort and off-road performance of the RV when driving;

[0044] The guide wheel sub-assembly is connected to the head end of the inertia tie rod sub-assembly to play a pre-support role;

[0045] The first manually adjustable legs are symmetrically arranged on both sides of the high-strength A-beam subassembly and are firmly connected to the floor of the RV body;

[0046] The second manually adjustable outrigger is symmetrically arranged with the rear portion of the independent suspension sub-assembly and is firmly connected to the floor of the RV body;

[0047] like Figure 3As shown, the high-strength A-beam subassembly includes a first hot-formed high-strength longitudinal beam and a second hot-formed high-strength longitudinal beam, between which a hot-formed high-strength cross beam is connected, and the three are connected in an A-shape; the first hot-formed high-strength longitudinal beam and the second hot-formed high-strength longitudinal beam are both provided with a plurality of ear pieces for fastening to the floor of the RV body; the first hot-formed high-strength longitudinal beam and the second hot-formed high-strength longitudinal beam are arranged in parallel at the rear ends, and are equipped with independent suspension clips for fastening to the floor of the RV body and the independent suspension. The high-strength A-beam subassembly is a key component used to provide strong support and stability. Through the hot forming process and structural design, not only the weight is greatly reduced, but also the various forces and moments generated by the RV during driving can be withstood.

[0048] like Figure 4 As shown, the inertial pull rod subassembly includes a tractor, an inertial hydraulic brake, a brake pull rod, and a brake cable, wherein the tractor is connected to the inertial hydraulic brake, the inertial hydraulic brake is connected to the brake cable through the brake pull rod, and the brake cable is traction-connected to the shaft head. The brake pull rod slides forward and backward in the through holes of multiple brackets, and each bracket is tightly connected to the floor of the RV body. The inertial pull rod subassembly is connected to the tractor, and when the tractor is driving, the tractor pulls the RV chassis assembly and then drives the RV body to move. When the tractor brakes, the RV impacts the inertial hydraulic brake under the action of inertia to compress it, pushing the brake oil inside the inertial hydraulic brake to move to the wheel cylinder, and the wheel cylinder obtains power and will hold the brake pull rod 2 tightly, and the brake pull rod pulls the brake cable, and finally the brake pad inside the shaft head is pulled by the brake cable to brake the wheel hub tire of the RV, thereby assisting the RV braking. The brake rod slides forward and backward in the through hole of the bracket, allowing the brake rod to have a certain stroke and flexibility during braking, thereby ensuring that the braking force can be evenly and stably applied to the wheel hub.

[0049] like Figure 5 As shown, the independent suspension subassembly includes a rectangular frame, a special-shaped frame, a spring and an axle head. The two sides of the rectangular frame are connected to the special-shaped frame extending inward through a rotating shaft. The special-shaped frame is connected to a curved plate. A support shaft connected to the rectangular frame is provided on the curved plate, and a spring is sleeved on the outside of the support shaft; an axle head is provided at the end of the curved plate, and the axle head is connected to the wheel hub tire. Each component works together to achieve support and buffering for the wheel hub tire. When the RV travels on an uneven road surface, the spring can absorb and disperse the impact force, thereby maintaining riding comfort. The special-shaped frame, the rotating shaft, and the curved plate enable the suspension to adapt to the unevenness of the road surface and maintain good contact between the wheels and the ground, thereby ensuring driving stability and controllability.

[0050] like Figure 6As shown, the guide wheel subassembly includes a double-row guide wheel, a height-adjusting worm gear and a manual crank. The double-row guide wheel and the manual crank are respectively connected to the bottom and top of the height-adjusting worm gear, and the height-adjusting worm gear is also connected to the inertia hydraulic brake. When the height of the guide wheel subassembly needs to be adjusted, the operator can drive the height-adjusting worm gear by rotating the manual crank. The worm gear mechanism converts the rotational motion into linear motion, thereby realizing the precise adjustment of the height of the double-row guide wheel. After the adjustment is completed, the double-row guide wheel will fall and contact the ground tightly, playing a pre-support role.

[0051] like Figure 7 As shown, the first manual adjustment leg and the second manual adjustment leg have the same structure, both of which include a threaded screw installed on the adjustment bracket, one end of the threaded screw extends out of the adjustment bracket as an adjustment part, and a slider is rotatably connected to the threaded screw, and the slider is connected to the support frame, and the two sides of the middle of the support frame are respectively connected to the adjustment bracket through a pull rod. When the RV needs to be parked on an uneven ground, the first manual adjustment leg and the second manual adjustment leg can be operated to make them fall and contact the ground tightly. By rotating the adjustment part on the threaded screw, the height of the leg can be accurately adjusted, thereby adjusting the levelness and stability of the RV body. Since the first manual adjustment leg and the second manual adjustment leg have the same structure and work independently, their heights can be adjusted separately to ensure that the RV body remains level and stable when parked. Although this manual adjustment method is relatively simple, it can provide sufficient support and stability and is suitable for a variety of different parking environments and conditions.

[0052] When parking the RV, first stop the RV under the action of the inertia pull rod sub-assembly, then manually adjust the guide wheel sub-assembly so that the double-row guide wheels fall down and contact closely with the ground to play a pre-support role; then unhook the tractor ball head from the tractor; finally, drop the first manual adjustment leg and the second manual adjustment leg and contact closely with the ground, and straighten the RV body by adjusting the first manual adjustment leg and the second manual adjustment leg.

[0053] The chassis assembly of the present application is specially designed for trailer RVs. The chassis design focuses on light weight, high safety and high comfort, and has excellent off-road performance.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A sheet metal A-beam trailer RV chassis assembly, characterized in that: include: High-strength A-beam subassembly, firmly connected to the RV body floor; The inertia tie rod sub-assembly is assembled on the high-strength A-beam sub-assembly and connected to the tractor; The independent suspension sub-assembly is connected to the high-strength A-beam sub-assembly and the rear end of the inertia tie rod sub-assembly, and is also firmly connected to the floor of the RV body; Wheels and tires are connected to both sides of the independent suspension sub-assembly; The guide wheel sub-assembly is connected to the head end of the inertia pull rod sub-assembly.

2. The sheet metal A-beam trailer RV chassis assembly according to claim 1, characterized in that: The high-strength A-beam subassembly is symmetrically provided with a first manually adjustable leg on both sides, and the independent suspension subassembly is symmetrically provided with a second manually adjustable leg at the rear end. The first manually adjustable leg and the second manually adjustable leg are both fastened to the floor of the RV body.

3. The sheet metal A-beam trailer RV chassis assembly according to claim 2, characterized in that: The first manual adjustment leg and the second manual adjustment leg have the same structure and both include a threaded screw installed on an adjustment bracket. One end of the threaded screw extends out of the adjustment bracket as an adjustment part. A slider is rotatably connected to the threaded screw, and the slider is connected to the support frame. Both sides of the middle part of the support frame are connected to the adjustment bracket through pull rods.

4. The sheet metal A-beam trailer RV chassis assembly according to claim 1, characterized in that: The independent suspension sub-assembly includes a rectangular frame, a special-shaped frame, a spring and an axle head. The two sides of the rectangular frame are connected to the special-shaped frames extending inward through a rotating shaft. The special-shaped frame is connected to a curved plate. A support shaft connected to the rectangular frame is provided on the curved plate, and a spring is sleeved on the outside of the support shaft. An axle head is provided at the end of the curved plate, and the axle head is connected to the wheel hub tire.

5. A sheet metal A-beam trailer RV chassis assembly according to claim 4, characterized in that: The inertia pull rod subassembly includes a tractor, an inertia hydraulic brake, a brake pull rod, and a brake cable, wherein the tractor is connected to the inertia hydraulic brake, the inertia hydraulic brake is connected to the brake cable through the brake pull rod, and the brake cable is traction-connected to the shaft head; the brake pull rod slides back and forth in the through holes of multiple brackets, and each bracket is fastened to the floor of the RV body.

6. A sheet metal A-beam trailer RV chassis assembly according to claim 5, characterized in that: The guide wheel subassembly includes a double-row guide wheel, a height-adjusting worm gear and a manual crank. The double-row guide wheel and the manual crank are respectively connected to the bottom and top of the height-adjusting worm gear. The height-adjusting worm gear is also connected to an inertia hydraulic brake.

7. The sheet metal A-beam trailer RV chassis assembly according to claim 5, characterized in that: The inertia hydraulic brake is fixed on the high-strength A-beam subassembly through an inertia brake connecting plate.

8. The sheet metal A-beam trailer RV chassis assembly according to claim 1, characterized in that: The high-strength A-type beam subassembly comprises a first hot-formed high-strength longitudinal beam and a second hot-formed high-strength longitudinal beam, a hot-formed high-strength cross beam is connected between the first hot-formed high-strength longitudinal beam and the second hot-formed high-strength longitudinal beam, and the three are connected in an A-shape.

9. A sheet metal A-beam trailer RV chassis assembly according to claim 8, characterized in that: The first thermoformed high-strength longitudinal beam and the second thermoformed high-strength longitudinal beam are both provided with a plurality of ear pieces for fastening and connecting with the RV body floor; the tail ends of the first thermoformed high-strength longitudinal beam and the second thermoformed high-strength longitudinal beam are arranged in parallel and are equipped with independent suspension clips for fastening and connecting with the RV body floor and the independent suspension.

10. The sheet metal A-beam trailer RV chassis assembly according to claim 1, characterized in that: When parking, first stop the RV under the action of the inertia pull rod sub-assembly, then manually adjust the guide wheel sub-assembly to make the double-row guide wheels fall down and contact closely with the ground to play a pre-support role; then unhook the tractor ball head from the tractor; finally, drop the first manual adjustment leg and the second manual adjustment leg and make them contact closely with the ground, and straighten the RV body by adjusting the first manual adjustment leg and the second manual adjustment leg.

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