Combined suspension assembly for semi-trailer

Abstract

The invention discloses a combined suspension assembly for a semitrailer, comprising common suspensions, wherein there are three common suspensions, a common balance arm is fixed on the middle common suspension, a special-shaped balance arm is provided on the common suspension on the left, a common leaf spring is provided between the special-shaped balance arm and the common balance arm, and a common leaf spring is also provided between the common balance arm and the common suspension on the right, the lower end centers of the two common leaf springs are connected with a bridge shaft through two U-shaped fixing screws, a common pull rod is provided between one side of the two bridge shafts and the common suspensions adjacent to the left side thereof, and a reverse-mounted suspension bracket is provided on the left side of the common suspension on the left. The combined suspension assembly for the semitrailer has a simple structure, can meet the requirement of the ultra-low distance between the middle height of the tank truck and the bridge shaft, can effectively shorten the wheelbase of the powder tank semitrailer, is conducive to driving in mountainous areas, and is conducive to lowering the center of gravity of the whole vehicle, so as to reduce the possibility of rollover of the whole vehicle when turning.

Description

Technical Field

[0001] The invention relates to the technical field of semi-trailers, in particular to a combined suspension assembly for a semi-trailer. Background Art

[0002] A semi-trailer is a trailer with the axle placed behind the center of gravity of the vehicle (when the vehicle is evenly loaded) and equipped with a coupling device that can transmit horizontal and vertical forces to the tractor. Semi-trailers are generally three-axle semi-trailers, which are divided into many types, such as 11-meter warehouse semi-trailers, 13-meter warehouse semi-trailers, low-bed semi-trailers, etc. It is a heavy-duty transportation vehicle connected to the semi-trailer head through a traction pin.

[0003] A semitrailer is a trailer with the axle placed behind the center of gravity of the vehicle (when the vehicle is evenly loaded) and equipped with a hitch that can transmit horizontal or vertical forces to the towing vehicle.

[0004] Semi-trailers are mainly used to transport large goods that are large in size and difficult to disassemble, such as excavators, etc. The fence type is more suitable for pulling fresh goods, such as vegetables and fruits. The box type is more suitable for pulling bulk goods and moisture-proof and valuable goods, etc. The detailed classification is as follows: dump semi-trailer, low-bed semi-trailer, fence semi-trailer, container semi-trailer, tank semi-trailer, box semi-trailer, dump semi-trailer, oil tanker semi-trailer, ultra-light semi-trailer, vehicle transport semi-trailer, powder and particle material transport semi-trailer, ash loading semi-trailer, chemical liquid transport semi-trailer, ordinary liquid cargo transport semi-trailer, heavy-duty low-bed semi-trailer, fence semi-trailer, gooseneck semi-trailer, skeleton container transport semi-trailer, 17.5-meter low-bed semi-trailer, etc.

[0005] Compared with "single-type" vehicles, semi-trailers can improve the comprehensive economic benefits of road transportation, increase transportation efficiency by 30-50%, reduce costs by 30-40%, and reduce fuel consumption by 20-30%. More importantly, the use of semi-trailers can also promote the organizational form of my country's logistics to a certain extent.

[0006] In the market, the semi-trailer suspension is a leaf spring straight installation. Conventional models use a straight installation, that is, the leaf spring is installed on the bridge axle and fixed with a U-shaped wire. It cannot be used in some models that require ultra-low suspension. Therefore, the wheelbase of the powder tank semi-trailer is relatively long, which is not conducive to the vehicle's form on mountain roads. In addition, the vehicle has a high center of gravity, and it is easy to roll over when turning, which cannot meet people's needs. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the existing defects and provide a semi-trailer combined suspension assembly with a simple structure. The assembly can solve the requirement of the ultra-low distance between the middle height of the tank truck and the bridge axle, and can effectively shorten the wheelbase of the powder tank semi-trailer, which is beneficial for driving in mountainous areas. It is also beneficial for lowering the center of gravity of the whole vehicle, reducing the possibility of rollover of the whole vehicle when turning, and is more conducive to driving stability, which can effectively solve the problems in the background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a semi-trailer combined suspension assembly, including ordinary suspensions, wherein there are three ordinary suspensions, an ordinary balancing arm is fixed on the middle ordinary suspension, a special-shaped balancing arm is provided on the ordinary suspension on the left, an ordinary leaf spring is provided between the special-shaped balancing arm and the ordinary balancing arm, and an ordinary leaf spring is also provided between the ordinary balancing arm and the ordinary suspension on the right, the lower end centers of the two ordinary leaf springs are connected with a bridge shaft through two U-shaped fixing screws, an ordinary pull rod is provided between one side of the two bridge shafts and the ordinary suspension adjacent to the left side thereof, an inverted suspension bracket is provided on the left side of the ordinary suspension on the left, an inverted leaf spring is provided between the inverted suspension bracket and the lower end of the special-shaped balancing arm, an bridge shaft is fixed to the center of the upper surface of the inverted leaf spring through another two U-shaped fixing screws, each bridge shaft is evenly provided with steel rims and tires, and an inverted suspension pull rod is provided between one side of the bridge shaft on the inverted leaf spring and the inverted suspension bracket.

[0009] Furthermore, the bridge axle is a square tubular structure, and the lower ends of the three bridge axles are located on the same plane. The lower ends of the wheels are kept consistent by the lower ends of the three bridge axles being located on the same plane.

[0010] Furthermore, both ends of the inverted suspension rod and the ordinary rod are respectively provided with through holes, and the interior of the through holes is connected with short shafts through bearings. One end of the short shaft is connected to the inverted suspension bracket or the ordinary suspension through the short shaft so that the inverted suspension rod and the ordinary rod can rotate.

[0011] Furthermore, the special-shaped balancing arm is a Z-shaped structure, and the special-shaped balancing arm is rotatably connected to the common suspension through a rotating shaft.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the lower ends of the wheels are kept consistent by locating the lower ends of the three bridge axles on the same plane, the reversed suspension tie rods and the ordinary tie rods can be rotated by the short axle connection, and the center of gravity of the tank truck can be effectively lowered by the reversed suspension bracket and the reversed leaf spring, thereby making the tank truck more stable during driving. The semi-trailer combined suspension assembly has a simple structure, can solve the requirement of the ultra-low distance between the middle height of the tank truck and the bridge axle, and can effectively shorten the wheelbase of the powder tank semi-trailer, which is beneficial for driving in mountainous areas, and is beneficial for lowering the center of gravity of the whole vehicle, reducing the possibility of rollover of the whole vehicle when turning, and is more conducive to driving stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention;

[0014] Figure 2 This is a schematic diagram of the installation structure of the present invention.

[0015] In the figure: 1 reverse mounted suspension bracket, 2 ordinary suspension, 3 reverse mounted leaf spring, 4 ordinary leaf spring, 5 reverse mounted suspension tie rod, 6 ordinary tie rod, 7 axle shaft, 8 special-shaped balance arm, 9 ordinary balance arm, 10 U-shaped fixing screw, 11 steel rim and tire. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1-2The present invention provides a technical solution: a semi-trailer combined suspension assembly, including ordinary suspensions 2, three ordinary suspensions 2, an ordinary balancing arm 9 is fixed on the middle ordinary suspension 2, a special-shaped balancing arm 8 is provided on the ordinary suspension 2 on the left, an ordinary leaf spring 4 is provided between the special-shaped balancing arm 8 and the ordinary balancing arm 9, and an ordinary leaf spring 4 is also provided between the ordinary balancing arm 9 and the ordinary suspension 2 on the right, the lower end centers of the two ordinary leaf springs 4 are connected to a bridge shaft 7 through two U-shaped fixing screws 10, a common pull rod 6 is provided between one side of the two bridge shafts 7 and the ordinary suspension 2 adjacent to the left side, a reverse suspension bracket 1 is provided on the left side of the ordinary suspension 2 on the left, a reverse leaf spring 3 is provided between the reverse suspension bracket 1 and the lower end of the special-shaped balancing arm 8, a bridge shaft 7 is fixed to the center of the upper surface of the reverse leaf spring 3 through another two U-shaped fixing screws 10, each bridge shaft 7 is evenly provided with a steel ring and a tire 11, and the reverse leaf spring 3 is provided with a steel ring. A reverse suspension tie rod 5 is provided between one side of the bridge shaft 7 and the reverse suspension bracket 1. The bridge shaft 7 is a square tubular structure. The lower ends of the three bridge shafts 7 are located on the same plane. The lower ends of the wheels are kept consistent by the lower ends of the three bridge shafts 7 being located on the same plane. Through holes are provided at both ends of the reverse suspension tie rod 5 and the ordinary tie rod 6. Short shafts are connected to the inside of the through holes through bearings. One end of the short shaft is connected to the reverse suspension bracket 1 or the ordinary suspension 2. The reverse suspension tie rod 5 and the ordinary tie rod 6 can be rotated through the short shaft connection. The special-shaped balance arm 8 is a Z-shaped structure, and the special-shaped balance arm 8 is rotatably connected to the ordinary suspension 2 through a rotating shaft. The semi-trailer combined suspension assembly has a simple structure, can solve the requirement of the ultra-low distance between the middle height of the tank truck and the bridge shaft, and can effectively shorten the wheelbase of the powder tank semi-trailer, which is beneficial to driving in mountainous areas, and is beneficial to lowering the center of gravity of the whole vehicle, so that the possibility of rollover of the whole vehicle when turning is reduced, which is more conducive to driving stability.

[0018] When in use: the lower ends of the three bridge shafts 7 are located on the same plane to keep the lower ends of the wheels consistent, the reversed suspension rod 5 and the ordinary rod 6 can be rotated through the short axis connection, and the reversed suspension bracket 1 and the reversed leaf spring 3 can effectively lower the center of gravity of the tank truck, thereby making the tank truck more stable during driving.

[0019] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A semi-trailer combined suspension assembly, comprising a common suspension (2), characterized in that: There are three ordinary suspensions (2), an ordinary balancing arm (9) is fixed on the middle ordinary suspension (2), a special-shaped balancing arm (8) is provided on the ordinary suspension (2) on the left, an ordinary leaf spring (4) is provided between the special-shaped balancing arm (8) and the ordinary balancing arm (9), and an ordinary leaf spring (4) is also provided between the ordinary balancing arm (9) and the ordinary suspension (2) on the right, the lower ends of the two ordinary leaf springs (4) are connected to a bridge shaft (7) via two U-shaped fixing screws (10), one side of the two bridge shafts (7) is provided with an ordinary pull rod (6) and the ordinary suspension (2) adjacent to the left side thereof, and the left side of the ordinary suspension (2) on the left side is provided with an inverted suspension A frame bracket (1), an inverted leaf spring (3) is provided between the inverted suspension bracket (1) and the lower end of the special-shaped balance arm (8), a bridge shaft (7) is fixed to the center of the upper surface of the inverted leaf spring (3) by two other U-shaped fixing screws (10), each bridge shaft (7) is evenly provided with a steel ring and a tire (11), and an inverted suspension tie rod (5) is provided between one side of the bridge shaft (7) on the inverted leaf spring (3) and the inverted suspension bracket (1); the bridge shaft (7) is a square tubular structure, and the lower ends of the three bridge shafts (7) are located on the same plane; the special-shaped balance arm (8) is a Z-shaped structure, and the special-shaped balance arm (8) is rotatably connected to the ordinary suspension (2) via a rotating shaft.

2. A semi-trailer combined suspension assembly according to claim 1, characterized in that: Through holes are respectively provided at both ends of the reverse-mounted suspension tie rod (5) and the common tie rod (6), and short shafts are respectively connected inside the through holes via bearings, and one end of the short shaft is connected to the reverse-mounted suspension bracket (1) or the common suspension (2).

Images