Lightweight central axle trailer platform

Abstract

The utility model relates to a lightweight central axle trailer platform, mainly includes central axle trailer, auxiliary frame and towing device, and the towing device has the towing ring and triangular towing frame, and the towing ring has the connected towing rod and towing ring, and the rear section of towing rod is screwed with the nut, and the front side end of triangular towing frame is fixed with front and rear mounting plates, and the front and rear mounting plates are fixed with the mounting sleeve, and the towing rod is locked and fixed by the nut after sequentially passing through the front mounting plate, the mounting sleeve and the rear mounting plate, still include the auxiliary support mechanism of fixed on the towing device, and the rear mounting plate and the nut still sequentially have the butterfly spring and the washer between, triangular towing frame is equipped with a plurality of connecting cross beams, the utility model discloses lightweight central axle trailer platform does not cause the greater impact to the equipment of towing when towing, and the strength of triangular towing frame is better, can better satisfy the bearing requirement of the larger load of platform.

Description

Technical Field

[0001] This utility model relates to a lightweight center-axle trailer platform. Background Technology

[0002] A trailer is a carrier that supports both the superstructure and the undercarriage. It must be strong enough and have a reliable connection to the tractor unit in front.

[0003] The existing lightweight center-axle trailer platform mainly consists of a center-axle trailer, subframe, towing device, braking system, electrical system, leveling mechanism, and other undercarriage mechanisms. The center-axle trailer primarily consists of a mechanical suspension system, including tires, axles, and leaf springs, enabling the trailer to move and bear loads. The subframe, as the main load-bearing structure, mainly consists of longitudinal beams, cross beams, side beams, and upper structure mounting interfaces. All these beam components are integrally welded from HG70 high-strength channel steel plates, featuring a lightweight design with a weight ≤400kg. The towing device mainly consists of a towing ring and a towing frame, welded to the subframe to form an integral structure, improving overall strength. It also includes an auxiliary support mechanism fixed to the towing device. This auxiliary support mechanism has an auxiliary support rod and a foldable auxiliary support wheel mounted on the lower part of the auxiliary support rod. When parked, the foldable auxiliary support wheel is in a supported state; when driving, the foldable auxiliary support wheel is in a folded-down state. The traction device has a traction ring and a triangular traction frame. The traction ring has a connected traction rod and a traction ring. The rear section of the traction rod is screwed with a nut. The front end of the triangular traction frame is fixed with front and rear mounting plates. A mounting sleeve is fixed between the front and rear mounting plates. The traction rod passes through the front mounting plate, the mounting sleeve and the rear mounting plate in sequence and is then locked and fixed by the nut.

[0004] The main problems with the aforementioned lightweight center-axle trailer platform are as follows: 1. The drawbar passes sequentially through the front mounting plate, mounting sleeve, and rear mounting plate before being locked in place by the nut. There is no cushioning during trailer towing, which can easily cause significant impact to the towing equipment. 2. The triangular towing frame has poor strength; when the platform bears a large load, its strength is insufficient. 3. While the foldable auxiliary support wheels of the auxiliary support mechanism can provide support when parked, the towing device may tilt downwards when the parking area is poor or the ground is uneven, which is detrimental to the connection between the towing device and the towing vehicle. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a lightweight center-axle trailer platform that does not cause a large impact on the towing equipment when the trailer is towing, and has good strength of the triangular towing frame.

[0006] To solve the above-mentioned technical problems, this utility model provides a lightweight center-axle trailer platform, mainly comprising a center-axle trailer, a subframe, a traction device, a braking system, an electrical system, and a lower assembly mechanism. The traction device has a traction ring and a triangular traction frame. The traction ring has a connected traction rod and a traction ring. A nut is screwed onto the rear section of the traction rod. Front and rear mounting plates are fixed to the front end of the triangular traction frame, and a mounting sleeve is fixed between the front and rear mounting plates. The traction rod passes through the front mounting plate, the mounting sleeve, and the rear mounting plate in sequence and is then locked and fixed by the nut. The platform also includes an auxiliary support mechanism fixed to the traction device. This auxiliary support mechanism has an auxiliary support rod and a foldable auxiliary support wheel mounted on the lower part of the auxiliary support rod. The platform is characterized in that a disc spring and a washer are sequentially installed between the rear mounting plate and the nut; and multiple connecting beams are mounted on the triangular traction frame.

[0007] The lightweight center-axle trailer platform with the above structure also features a disc spring between the rear mounting plate and the nut. The disc spring has high stiffness and strong shock absorption capacity, allowing it to withstand large loads with small deformation. This prevents significant impact on the towing equipment during trailer towing. Furthermore, the disc spring occupies little space and does not affect the front layout or overall length control of the trailer. The triangular towing frame is equipped with multiple connecting crossbeams, which greatly improves the strength of the triangular towing frame and better meets the platform's load-bearing requirements.

[0008] Preferably, the number of the disc springs is two, arranged back to back.

[0009] By adopting the above-mentioned technical features, better buffering and vibration reduction effects can be achieved without affecting the front layout and overall length control of the trailer.

[0010] Furthermore, the front outer side of the triangular traction frame is fixed with a stop block.

[0011] With the above-mentioned technical features, when the safety chain is unhooked, the stop can be used to prevent the trailer from making direct contact with the tractor in front when turning.

[0012] As an improvement of this utility model, the auxiliary support mechanism further includes a lead screw lifting rod, the top end of which is fixed to the bottom end of the lead screw lifting rod, the lead screw lifting rod is fixed to the traction device, and the axes of the lead screw lifting rod and the auxiliary support rod are on the same straight line.

[0013] With the above-mentioned technical features, when the parking space is poor, the height of the traction device can be adjusted by adjusting the lead screw lifting rod, which can facilitate the connection between the traction device and the towing vehicle. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings.

[0015] Figure 1 This is a front view structural diagram of a lightweight center-axle trailer platform according to the present invention. The foldable auxiliary support wheel in the figure is in a folded state.

[0016] Figure 2 yes Figure 1 A side view structural diagram.

[0017] Figure 3 yes Figure 1 A top-view structural diagram.

[0018] Figure 4 This is a top-view enlarged schematic diagram of the traction device in this utility model.

[0019] Figure 5 yes Figure 4 Enlarged schematic diagram of the structure at point I.

[0020] Figure 6 It is after the front outer side of the triangular traction frame is fixed with a stop. Figure 4 .

[0021] Figure 7 This is a front view structural diagram of the auxiliary support mechanism in a lightweight center-axle trailer platform according to this utility model. The foldable auxiliary support wheel in the figure is in a supported state.

[0022] Figure 8 yes Figure 7 A side view structural diagram. Detailed Implementation

[0023] See Figure 1 - Figure 8This utility model discloses a lightweight center-axle trailer platform, mainly comprising a center-axle trailer 10, a subframe 20, a traction device 30, a braking system 40, an electrical system 50, and a lower assembly mechanism 60. The traction device 30 has a traction ring 31 and a triangular traction frame 32. The traction ring has a connected traction rod 311 and a traction ring 312. A nut 313 is screwed onto the rear section of the traction rod. Front and rear mounting plates 321 and 322 are fixed to the front end of the triangular traction frame 32, and a mounting bracket is fixed between the front and rear mounting plates. The sleeve 323, through which the traction rod passes sequentially through the front mounting plate, the mounting sleeve, and the rear mounting plate, is locked and fixed by the nut. It also includes an auxiliary support mechanism 70 fixed to the traction device 30. This auxiliary support mechanism has an auxiliary support rod 71 and a foldable auxiliary support wheel 72 mounted on the lower part of the auxiliary support rod. The rear mounting plate 322 and the nut 313 are further characterized by the sequential installation of a butterfly spring 314 and a washer 315. The triangular traction frame 32 is equipped with multiple connecting beams 324. There are two butterfly springs 314 arranged back-to-back. Stops 325 are fixed to the outer front part of the triangular traction frame 32. The auxiliary support mechanism 70 also includes a lead screw lifting rod 73. The top end of the auxiliary support rod 71 is fixed to the bottom end of the lead screw lifting rod, which is fixed to the traction device 30. The axes of the lead screw lifting rod and the auxiliary support rod are on the same straight line. The lead screw lifting rod can be a manual lifting rod with a self-locking function, as is common in the prior art. The center-axle trailer 10 is equipped with leveling mechanisms 80 at the four corners below.

[0024] It is understood that the above specific description of the present utility model is only used to illustrate the present utility model and is not limited to the technical solutions described in the embodiments of the present utility model. Any modifications or equivalent substitutions to the present utility model to achieve the same technical effect are within the protection scope of the present utility model.

Claims

1. A lightweight center-axle trailer platform, mainly comprising a center-axle trailer (10), a subframe (20), a traction device (30), a braking system (40), an electrical system (50), and a lower assembly mechanism (60), wherein the traction device (30) has a traction ring (31) and a triangular traction frame (32), the traction ring having a connected traction rod (311) and a traction ring (312), the rear section of the traction rod being screwed with a nut (313), the front end of the triangular traction frame (32) being fixed with front and rear mounting plates (321, 322), and a mounting sleeve (323) being fixed between the front and rear mounting plates, wherein the traction rod passes through the front mounting plate, the mounting sleeve, and the rear mounting plate in sequence and is locked and fixed by the nut, and further comprising an auxiliary support mechanism (70) fixed on the traction device (30), the auxiliary support mechanism having an auxiliary support rod (71) and a foldable auxiliary support wheel (72) mounted on the lower part of the auxiliary support rod, characterized in that: A butterfly spring (314) and a washer (315) are sequentially installed between the rear mounting plate (322) and the nut (313); multiple connecting beams (324) are installed on the triangular traction frame (32).

2. The lightweight center-axle trailer platform as described in claim 1, characterized in that: The number of the disc springs (314) is two, arranged back to back.

3. The lightweight center-axle trailer platform as described in claim 1, characterized in that: The front outer side of the triangular traction frame (32) is fixed with a stop block (325).

4. The lightweight center-axle trailer platform as described in claim 1, characterized in that: The auxiliary support mechanism (70) further includes a lead screw lifting rod (73), the top end of the auxiliary support rod (71) is fixed to the bottom end of the lead screw lifting rod, the lead screw lifting rod is fixed on the traction device (30), and the axes of the lead screw lifting rod and the auxiliary support rod are on the same straight line.

5. The lightweight center-axle trailer platform as described in claim 1, characterized in that: The center-axle trailer (10) is equipped with leveling mechanisms (80) at the four corners below.

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