Motor tricycle rear axle load adjusting device and motor tricycle

Abstract

The motor tricycle rear axle load adjusting device comprises a base, an adjusting arm and a load spring, two sides of the base are respectively and rotatably connected with one end of an upper rocker arm, and the other end of the upper rocker arm is respectively connected with a rear wheel steering knuckle. Two brackets and a jacking mechanism are fixedly arranged on the upper surface of the base; the jacking mechanism is located between the two supports. The adjusting arm comprises a first end part, a second end part and an arm body, a through hole is formed in the first end part and is used for being rotatably connected with the second through hole, one end of a load spring sleeves the bottom of the second end part, and the other end of the load spring sleeves the upper surface of the upper rocker arm; a third through hole is formed in an arm body of the adjusting arm and used for being rotationally connected with a hole in the top of the jacking mechanism. The adjusting arm serves as a lever, the third through hole serves as a fulcrum, the through hole in the first end serves as a force point, the jacking mechanism presses the two load springs downwards while ascending, and load support is provided for the motor tricycle.

Description

Technical Field

[0001] This utility model relates to the field of three-wheeled motorcycles, specifically to a rear axle load adjustment device for a three-wheeled motorcycle and a three-wheeled motorcycle. Background Technology

[0002] Three-wheeled motorcycles have a significantly higher load capacity than two-wheeled motorcycles, and some three-wheeled motorcycles have become an important part of logistics and freight transportation. With the increased load capacity at the rear, existing three-wheeled motorcycles tend to ride down close to the ground.

[0003] However, the existing axle of the rear axle of three-wheeled motorcycles is inconvenient to fix with the axle, because the original axle is round and is fixed with a U-shaped clamp. The force is longitudinal, and the original round axle has a small stress point, which is prone to displacement and unstable fixation. Therefore, it is necessary for us to design a rear axle for three-wheeled motorcycles.

[0004] CN201646293U discloses a rear axle shock absorber for a three-wheeled motorcycle. It includes a main steel plate and a secondary steel plate. The secondary steel plate is placed on the main steel plate and fixed to the rear axle of the three-wheeled motorcycle by a pressure plate, a U-shaped steel bar with threaded ends, and a nut. The main steel plate is connected to the main beam at both ends by lifting lugs. The secondary steel plate has buffer pads at both ends, and the outer side of the main beam has supports corresponding to the buffer pads on the secondary steel plate. This rear axle shock absorber can limit the downward movement of the main beam. Summary of the Invention

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and propose a rear axle load adjustment device for a three-wheeled motorcycle and a three-wheeled motorcycle. The rear axle load adjustment device is an adjustment device that provides rigid support for the load of the three-wheeled motorcycle.

[0006] The rear axle load adjustment device for a three-wheeled motorcycle includes a base, an adjustment arm, and a load spring. The base is rotatably connected to one end of an upper rocker arm on two opposite sides along its length. The other end of the upper rocker arm is connected to the rear wheel steering knuckle of the three-wheeled motorcycle.

[0007] Two brackets and a lifting mechanism are fixedly installed on the upper surface of the base along its center line; and the lifting mechanism is located between the two brackets; the top of the bracket has a first through hole, the bracket extends out of the base and has a hole for fixed connection with the shock absorber spring of the three-wheeled motorcycle;

[0008] The adjusting arm includes a first end, a second end, and an arm body. The first end has a through hole for rotatable connection with a second through hole. One end of a load spring is sleeved on the bottom of the second end, and the other end of the load spring is sleeved on the upper surface of the upper rocker arm. The arm body of the adjusting arm has a third through hole for rotatable connection with the first through hole. The distance between the third through hole and the second end of the adjusting arm is 4-8 times the distance between the through hole of the first end and the third through hole.

[0009] The lifting mechanism is used to lift one end of the adjusting arm, and the top of the lifting mechanism has two second through holes, which are respectively connected to the first end of the adjusting arm;

[0010] The adjusting arm acts as a lever, with the third through hole as the fulcrum and the through hole at the first end as the force point. When it rises with the lifting mechanism, it simultaneously presses down the load springs located at the second ends of the two adjusting arms, providing load support for the three-wheeled motorcycle.

[0011] Moreover, during the bumpy ride, the lifting mechanism and adjusting arm remain stationary, only moving up and down when the driver activates the lifting mechanism.

[0012] Furthermore, the lifting mechanism is selected from one of the following: a hydraulic lifting mechanism, a screw lifting mechanism, and a pneumatic lifting mechanism.

[0013] Furthermore, the second through hole is an elongated hole, so that the end of the adjusting arm can fit into the second through hole when moving up and down.

[0014] Preferably, the ratio of the distance between the through hole at the first end of the adjusting arm and the third through hole to the distance between the third through hole and the shaft hole at the second end is 1:4.

[0015] Furthermore, the first ends of the two adjusting arms are rotatably connected to the second through holes at the top of the lifting mechanism via shafts, and the third through holes of the adjusting arms are rotatably connected to the first through holes at the top of the bracket via shafts.

[0016] A three-wheeled motorcycle includes a chassis lower connecting plate, a lower rocker arm, a rear wheel steering knuckle, and the aforementioned three-wheeled motorcycle rear axle load adjustment device. One end of the lower rocker arm is rotatably connected to the chassis lower connecting plate, and the other end of the lower rocker arm is rotatably connected to the lower part of the rear wheel steering knuckle. The upper part of the rear wheel steering knuckle is rotatably connected to an upper rocker arm. Moreover, the chassis lower connecting plate and the base are arranged in parallel.

[0017] Compared with the prior art, this utility model has a simple structure, can limit the downward movement of the vehicle body, and has the characteristics of simple structure and easy maintenance. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the structure of the three-wheeled motorcycle rear axle load adjustment device described in this utility model;

[0019] Figure 2 This is a diagram showing the usage status of the three-wheeled motorcycle rear axle load adjustment device when it is installed on the rear axle of the three-wheeled motorcycle.

[0020] in,

[0021] 1: Upper rocker arm; 2: Base; 3: Load spring;

[0022] 4: Adjusting arm; 5: Bracket; 6: Lifting mechanism;

[0023] 7: First through hole; 8: Second through hole; 9: Shock-absorbing spring;

[0024] 10: Rear wheel steering knuckle; 11: Chassis lower connecting plate; 12: Lower rocker arm. Detailed Implementation

[0025] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The specific embodiments described are only for explanation and illustration of this utility model and are not intended to limit this utility model.

[0026] like Figure 1 As shown, a rear axle load adjustment device for a three-wheeled motorcycle is installed on the upper part of the rear axle of an existing three-wheeled motorcycle for adjusting the load of the rear axle. It includes a rectangular base 2, on which two protruding shaft portions are respectively provided on two opposite sides along its length. The shaft portions are used to sleeve one end of an upper rocker arm 1, thereby allowing the upper rocker arm 1 and the base 2 to be rotatably connected. The other end of the upper rocker arm 1 is connected to the rear wheel steering knuckle 10 of the three-wheeled motorcycle. The outer wall of the rear wheel steering knuckle is provided with a shaft portion, which is used to connect to the wheel hub of the three-wheeled motorcycle.

[0027] Two brackets 5 and a lifting mechanism 6 are fixedly installed on the upper surface of the base 2 along its center line. The brackets 5 are respectively close to the two sides where the protruding shaft is provided, and the lifting mechanism 6 is located in the middle of the bracket 5. The bracket 5 is a triangular bracket, with the two corners containing its hypotenuse as the first corner and the second corner. The first corner is located at the top of the bracket and has a first through hole 7. The second corner extends out of the base 2 and has a hole for fixed connection with the shock absorber spring 9 of the three-wheeled motorcycle.

[0028] The lifting mechanism 6 is a hydraulic lifting mechanism, including a hydraulic pump, hydraulic lines, and a rod. The bottom of the rod is connected to the hydraulic pump, and the pressure generated by the hydraulic pump lifts the rod. A plate-shaped connecting element is welded to the top of the rod, and the connecting element has two second through holes 8, which are used to connect one end of the adjusting arm. Since the distance between the two opposing second through holes 8 will change slightly when the adjusting arm moves up and down with the lifting mechanism, the second through holes 8 are designed as elliptical elongated holes to improve the adaptability of the device. Moreover, the lifting mechanism has multiple preset positions. The first position corresponds to an additional load of 50-100kg, and the top of the lifting mechanism 6 is raised by 0.5cm; the second position corresponds to an additional load of 100-200kg, and the top of the lifting mechanism 6 is raised by 1cm.

[0029] The adjusting arm 4 includes two ends (a first end and a second end) and an arm body. The first end has a through hole for rotatable (and slightly sliding) connection with a second through hole 8. The second end is in the form of a shaft hole with a groove on its lower surface. A rubber block is fixed in the groove so that one end of the load spring 3 is fitted inside the rubber block. The arm body of the adjusting arm 4 has a third through hole for rotatable connection with a first through hole 7. The ratio of the distance between the through hole and the third through hole at the first end of the adjusting arm 4 to the distance from the third through hole to the second end is approximately 1:4. Specifically, the first ends of the two adjusting arms 4 are rotatably connected to the second through hole 8 at the top of the lifting mechanism 6 via a shaft. The third through hole of the adjusting arm 4 is rotatably connected to the first through hole 7 at the top of the bracket 5 via a shaft. One end of the load spring 3 is fixedly installed at the bottom of the second end of the adjusting arm 4. The other end of the load spring 3 is also installed on the upper surface of the upper rocker arm 1 in the same way. That is, the upper surface of the upper rocker arm has a groove with a rubber block fixed inside the groove so that the other end of the load spring 3 is fitted inside the rubber block.

[0030] like Figure 2 As shown, the rear axle load adjustment device for the three-wheeled motorcycle is installed on the upper part of the rear axle of the existing three-wheeled motorcycle. The chassis lower connecting plate 11 and the lower rocker arm 12 of the existing three-wheeled motorcycle are rotatably connected, and their connection method is similar to that of the base 2 and the upper rocker arm 1. Moreover, one end of the lower rocker arm 12 is connected to the chassis lower connecting plate 11, and the other end is rotatably connected to the lower part of the rear wheel steering knuckle 10; the upper part of the rear wheel steering knuckle 10 is rotatably connected to the upper rocker arm 1. The chassis lower connecting plate 11 and the base 2 are arranged in parallel; and in order to ensure that the distance between the chassis lower connecting plate 11 and the base 2 remains unchanged, a support plate is provided on the side wall on the same side of the chassis lower connecting plate 11 and the base 2, so that the chassis lower connecting plate 11 and the base 2 form a stable structure.

[0031] One end of the decompression spring 9 of the three-wheeled motorcycle is fixed to the lower rocker arm, and the other end is fixed to the bracket 5 of the rear axle load adjustment device.

[0032] The adjusting arm 4 acts as a lever, with the third through hole as the fulcrum and the through hole at the first end as the force point. As the lifting mechanism 6 rises, it simultaneously presses down on the load spring located at the bottom of the second end, providing load support for the three-wheeled motorcycle. During the extension and retraction of the load spring 3, the spring's stiffness changes, thereby altering the vehicle's load.

[0033] When in use, select the appropriate gear according to the increased load. For example, when the vehicle is stationary, the load spring 3 is 20 cm long. When a load of 100-200 kg is added to the rear of the three-wheeled motorcycle, manually control the lifting mechanism 6 to activate the second gear, raising the top of the lifting mechanism 6 by 2 cm and lowering the other end of the adjusting arm 4 by 8 cm. The load springs at both ends of the adjusting arm 4 will be compressed by 8 cm, reducing the spring length to 12 cm. This shortening of the spring increases its rigidity, preventing the three-wheeled motorcycle from sag too low when the load is added to the rear, thus increasing the load on the rear axle of the three-wheeled motorcycle.

[0034] During vehicle operation, the load spring 3 will extend and retract with the vehicle's movement, similar to the shock absorber spring 9. However, this extension and retraction is caused by the upward or downward movement of the upper rocker arm 1 below the spring. During bumpy conditions, the lifting mechanism 6 and the adjusting arm 4 remain stationary. These two parts only move when the owner adjusts the height selection of the lifting mechanism in the vehicle's LCD control system.

[0035] Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these are within the scope of protection of the present invention.

Claims

1. A load adjustment device for the rear axle of a three-wheeled motorcycle, characterized in that, Includes a base (2), an adjusting arm (4) and a load spring (3). The base (2) is rotatably connected to one end of an upper rocker arm (1) on two opposite sides along its length. The other end of the upper rocker arm (1) is connected to the rear wheel steering knuckle of the three-wheeled motorcycle. Two brackets (5) and a lifting mechanism (6) are fixedly installed on the upper surface of the base (2) along the center line of its length direction; and the lifting mechanism (6) is located between the two brackets (5); the top of the bracket (5) has a first through hole (7), the bracket (5) extends out of the base (2) and has a hole for fixed connection with the shock absorber spring (9) of the three-wheeled motorcycle; The adjusting arm (4) includes a first end, a second end, and an arm body. The first end has a through hole for rotatably connecting with a second through hole (8). One end of a load spring (3) is sleeved on the bottom of the second end, and the other end of the load spring (3) is sleeved on the upper surface of the upper rocker arm (1). The arm body of the adjusting arm (4) has a third through hole for rotatably connecting with a first through hole (7). The distance between the third through hole of the adjusting arm (4) and the second end is 4-8 times the distance between the through hole of the first end and the third through hole. The lifting mechanism (6) is used to lift one end of the adjusting arm, and the lifting mechanism (6) has two second through holes (8) at the top, which are respectively connected to the first end of the adjusting arm; The adjusting arm (4) acts as a lever, with the third through hole as the fulcrum and the through hole at the first end as the force point. When the lifting mechanism (6) rises, it simultaneously presses down the load springs (3) located at the second ends of the two adjusting arms (4) to provide load support for the three-wheeled motorcycle.

2. The load adjustment device for the rear axle of a three-wheeled motorcycle according to claim 1, characterized in that, The lifting mechanism (6) is selected from one of the following: a hydraulic lifting mechanism, a spiral lifting mechanism, and a pneumatic lifting mechanism.

3. The load adjustment device for the rear axle of a three-wheeled motorcycle according to claim 1, characterized in that, The second through hole (8) is an elongated hole, so that the end of the adjusting arm (4) can fit into the second through hole (8) when it moves up and down.

4. The load adjustment device for the rear axle of a three-wheeled motorcycle according to claim 1, characterized in that, The ratio of the distance between the through hole at the first end of the adjusting arm (4) and the third through hole to the distance between the third through hole and the shaft hole at the second end is 1:

4.

5. The load adjustment device for the rear axle of a three-wheeled motorcycle according to claim 1, characterized in that, The first ends of the two adjusting arms (4) are rotatably connected to the second through hole (8) at the top of the lifting mechanism (6) via shafts, and the third through hole of the adjusting arm (4) is rotatably connected to the first through hole (7) at the top of the bracket (5) via shafts.

6. A three-wheeled motorcycle, characterized in that, The device includes a chassis lower connecting plate (11), a lower rocker arm (12), a rear wheel steering knuckle (10), and a rear axle load adjustment device for a three-wheeled motorcycle according to claim 1. One end of the lower rocker arm (12) is rotatably connected to the chassis lower connecting plate (11), and the other end of the lower rocker arm (12) is rotatably connected to the lower part of the rear wheel steering knuckle (10). The upper part of the rear wheel steering knuckle (10) is rotatably connected to the upper rocker arm (1). Moreover, the chassis lower connecting plate (11) and the base 2 are arranged in parallel.

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