Electric tricycle with adjustable floor frame

Abstract

This utility model discloses an electric tricycle with a liftable chassis frame, including a chassis. A chassis plate is horizontally mounted on top of the chassis. The rear sides of the chassis plate are longitudinally rotatably connected to the chassis via hinged seats. Support columns are vertically fixed on both sides of the front of the chassis. A steel wire rope is movably supported on the top of the support columns. One end of the steel wire rope is fixedly connected to the front end of the chassis plate. With the cooperation of the support columns, connecting cable blocks, and a winding device, the steel wire rope forms a corner traction support. When it is necessary to raise the front end of the chassis plate, the motor drives the winding wheel to rotate and wind up the right end of the steel wire rope. With the cooperation of the support columns, the front end of the chassis plate is pulled upward and rotated clockwise along the hinged seats. When the chassis plate reaches an appropriate tilt angle, the goods will automatically fall out. Compared with existing lifting structures, this design has the characteristics of simple structure, good stability, and easy maintenance.

Description

Technical Field

[0001] This utility model relates to the field of electric tricycle technology, specifically to an electric tricycle with a liftable chassis frame. Background Technology

[0002] Electric tricycles are three-wheeled transportation vehicles powered by batteries and driven by electric motors. They are mainly used for carrying goods or passengers and can be categorized into household, freight, and passenger types. Existing automatic loading and unloading devices on electric tricycles use hydraulic cylinders and their transmission mechanisms to raise the front of the chassis and tilt it backward at an angle of 45° or more to unload the cargo. The disadvantages are that the hydraulic cylinders are complex and costly. Furthermore, the existing chassis of electric tricycles cannot be appropriately expanded to meet different usage needs, thus requiring improvement in operational flexibility. In related technologies, such as the patented electric tricycle automatic unloading and lifting device with announcement number CN202156332U, when it is in the closed state, the motor is turned on, and the worm gear drives the worm wheel to rotate counterclockwise. The support arm, which is coaxially connected to the worm wheel, also rotates in the same direction, causing the pulley to slide to the rear end in the slide rail. The vehicle floor rotates upward around the axis, causing the front end of the vehicle floor to gradually rise, and the goods are automatically unloaded. When the motor reverses, the vehicle floor falls back to the closed state.

[0003] While the aforementioned technical solution can drive the worm wheel to rotate clockwise and counterclockwise via the worm and use support arms to tilt and raise the vehicle floor, the heavy weight of the vehicle floor, especially when loading heavy objects such as bricks and metal machinery, inevitably causes squeezing wear and even deformation damage to the meshing surfaces of the worm and worm wheel. Moreover, the high-torque drive method using the mid-section swing arm further accelerates the wear rate of the worm and worm wheel. This is not conducive to the low-cost use and subsequent maintenance of the equipment, and its structural rationality and practicality need to be further improved. Utility Model Content

[0004] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0005] Therefore, the purpose of this utility model is to provide a liftable chassis frame for electric tricycles, in order to solve the problem mentioned in the background art of the prior art where the automatic unloading lifting device for electric tricycles is heavy, especially when loading heavy objects such as bricks and metal machinery. The strong pressure inevitably causes squeezing wear and even deformation damage to the meshing surfaces of the worm and worm wheel; moreover, the high torque drive method using the middle swing arm further exacerbates the wear rate of the worm and worm wheel.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an electric tricycle with a liftable chassis frame, comprising a chassis, a chassis plate horizontally arranged above the chassis, the rear two sides of the chassis plate being longitudinally rotatably connected to the chassis via hinged seats, support columns vertically fixed on the front two sides of the chassis plate, a steel wire rope movably supported on the top of the support columns, one end of the steel wire rope being fixedly connected to the front end of the chassis plate, and a winding and unwinding device for driving the other end of the steel wire rope to be wound and released near the middle of the bottom of the chassis;

[0007] Side baffles are fixed on both sides of the upper end of the vehicle floor, and an auxiliary floor plate is slidably extended and retracted on the inner rear end of the vehicle floor. An auxiliary baffle is fixedly connected to the auxiliary floor plate and is slidably extended and retracted on the inner rear end of the side baffle.

[0008] As a preferred embodiment of the electric tricycle with a liftable chassis frame according to the present invention, the hinge seat includes a fixed lug plate fixed to the side wall of the chassis and a rotating shaft with one end fixed to the side wall of the chassis and the other end rotatably connected to the upper end of the fixed lug plate.

[0009] As a preferred embodiment of the electric tricycle with a liftable chassis frame described in this utility model, a fixed pulley is longitudinally rotatably installed on the upper end of the support column, and a steel wire rope is wound around the inner top surface of the fixed pulley. The front sides of the chassis also have connecting rope blocks that are fixedly connected to one end of the steel wire rope.

[0010] As a preferred embodiment of the electric tricycle with a liftable chassis according to the present invention, the retraction device includes a bearing seat fixed to the lower part of the chassis, a main shaft horizontally movably passing through both sides of the bearing seat, a collecting wheel fixed to one end of the main shaft and fixedly wound with a wire rope, and a motor for driving the main shaft to rotate axially and fixedly installed at the bottom of the chassis.

[0011] As a preferred embodiment of the electric tricycle with a liftable chassis according to the present invention, a support balance seat for supporting the chassis is fixed at the top front end of the chassis.

[0012] As a preferred embodiment of the electric tricycle with a liftable chassis frame according to the present invention, the inner rear end of the chassis has a sliding groove 1a that is slidably matched with the auxiliary chassis, the inner rear end of the side baffle has a sliding groove 2a that is slidably matched with the auxiliary baffle, and the two sides of the rear end of the auxiliary chassis are fixedly connected to the rear end of the auxiliary baffle.

[0013] As a preferred embodiment of the electric tricycle with a liftable chassis according to the present invention, the auxiliary chassis has multiple positioning holes a along its length on one or both sides, and a threaded cylinder is fixed on one or both sides of the rear end of the chassis. The threaded cylinder is threaded with a bolt, and the bolt shank is coaxial with the positioning hole a on a horizontal line.

[0014] As a preferred embodiment of the electric tricycle with a liftable chassis frame described in this utility model, a front baffle is fixed to the front end of the chassis, and the two ends of the front baffle are fixedly connected to the side baffles on both sides. A door panel is also provided between the two side pillars.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] (i) The electric tricycle has a liftable chassis frame. With the cooperation of support columns, connecting rope blocks and retraction devices, a corner traction support is formed for the wire rope. When it is necessary to lift the front of the chassis, the motor drives the winding wheel to rotate and retract the right end of the wire rope. With the cooperation of the support columns, the front of the chassis is pulled upward and rotated clockwise along the hinge seat. When the chassis reaches an appropriate tilt angle, the goods will automatically fall out. Compared with the existing lifting structure, it has the characteristics of simple structure, good stability and easy maintenance, and its practicality is further improved.

[0017] (ii) The electric tricycle has a liftable chassis frame. When it is necessary to expand the load-bearing space of the chassis, the user can directly pull out the auxiliary chassis plate and auxiliary baffle at the rear end of the chassis, extend it to the appropriate stroke, and then tighten the bolts so that the bolt rods are embedded in the corresponding positioning holes a on the side of the auxiliary chassis plate. In this way, the adjustment and fixation of the entire chassis is completed, making the chassis frame more flexible to use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0019] Figure 2 This utility model Figure 1 A magnified schematic diagram of the structure at point B in the middle;

[0020] Figure 3 This is a schematic diagram of the structure of the launching and retracting device of this utility model;

[0021] Figure 4 This utility model Figure 1 A magnified view of the structure at point A in the middle;

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of the chassis frame of this utility model.

[0023] In the diagram: 100, chassis; 110, support balance seat; 200, floor plate; 200a, slide groove one; 210, side baffle; 210a, slide groove two; 220, front baffle; 300, hinge seat; 310, fixed ear plate; 320, shaft; 400, support column; 410, fixed pulley; 420, wire rope; 430, connecting cable block; 500, winding and unwinding device; 510, bearing seat; 520, main shaft; 530, winding wheel; 540, motor; 600, auxiliary base plate; 600a, positioning hole; 610, side column; 620, auxiliary baffle; 630, door panel; 700, threaded cylinder; 710, bolt. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0027] Figures 1-5 The diagram shown is a complete structural schematic of the adjustable chassis frame of this utility model electric tricycle. Please refer to [link / reference]. Figures 1-5 The electric tricycle with a liftable chassis frame of this embodiment includes a chassis 100, a chassis plate 200 horizontally arranged above the chassis 100, and a longitudinal rotatable connection between the rear two sides of the chassis plate 200 and the chassis 100 through hinge seats 300. Support columns 400 are vertically fixed on the front two sides of the chassis 100, and a steel wire rope 420 is movably supported on the top of the support column 400. One end of the steel wire rope 420 is fixedly connected to the front end of the chassis plate 200. A winding and unwinding device 500 for driving the other end of the steel wire rope 420 to wind and unwind is arranged near the middle of the bottom of the chassis 100. Side baffles 210 are fixed on the upper two sides of the chassis plate 200, and an auxiliary chassis plate 600 is slidably extended and retracted on the inner rear side of the chassis plate 200. An auxiliary baffle 620 fixedly connected to the auxiliary chassis plate 600 is slidably extended and retracted on the inner rear side of the side baffles 210.

[0028] The hinge seat 300 includes a fixed lug plate 310 fixed to the side wall of the chassis 100, and a rotating shaft 320 with one end fixed to the side wall of the chassis 200 and the other end rotatably connected to the upper end of the fixed lug plate 310. A fixed pulley 410 is longitudinally rotatably mounted on the upper end of the support column 400, and a steel wire rope 420 is wound around the inner top surface of the fixed pulley 410. Connecting cable blocks 430, fixedly connected to one end of the steel wire rope 420, are also present on both sides of the front end of the chassis 200. The fixed pulley 410 makes the steel wire rope 420 move more smoothly and smoothly. The winding device 500 includes a bearing seat 510 fixed to the lower part of the chassis 100, a main shaft 520 horizontally movably passing through both sides of the bearing seat 510, a winding wheel 530 fixed to one end of the main shaft 520 and fixedly wound with the steel wire rope 420, and a motor 540 for driving the main shaft 520 to rotate axially and fixedly mounted on the bottom of the chassis 100. It should be noted that the motor 540 used in this embodiment can be either a single-axis motor or a dual-axis motor. If it is a dual-axis motor, it can simultaneously drive the two main shafts 520 to rotate synchronously, and there is no limitation on this. In addition, the control switch for controlling the motor can be set on the handle of the electric tricycle. Specifically, in use, the steel wire rope 420 is formed by the cooperation of the support column 400, the connecting cable block 430 and the winding device 500. When it is necessary to lift the front end of the vehicle floor 200, the motor 540 drives the winding wheel 530 to rotate and wind up the right end of the steel wire rope 420. With the cooperation of the support column 400, the front end of the vehicle floor 200 is pulled upward and rotated clockwise along the hinge seat 300. When the vehicle floor 200 reaches an appropriate tilt angle, the goods will automatically fall out. Compared with the existing lifting structure, it has the characteristics of simple structure, good stability and easy maintenance, and its practicality is further improved.

[0029] Furthermore, a support balance seat 110 for supporting the vehicle floor 200 is fixed to the top front end of the chassis 100. It can be understood that when the vehicle floor 200 is lowered and retracted, the support balance seat 110 and the hinge seat 300 can provide horizontal support for the vehicle floor 200. In other embodiments, shock absorbers, buffer pads, etc. can also be provided on the support balance seat 110, for example, to provide a certain buffer when the vehicle floor 200 is lowered too quickly.

[0030] The rear inner side of the vehicle floor 200 has a sliding groove 200a that slides and matches the auxiliary floor 600. The rear inner side of the side baffle 210 has a sliding groove 210a that slides and matches the auxiliary baffle 620. Side posts 610 that are fixedly connected to the rear ends of the auxiliary floor 600 are fixed on both sides of the rear end. Multiple positioning holes 600a are opened along the length direction on one or both sides of the auxiliary floor 600. Threaded cylinders 700 are fixed on one or both sides of the rear end of the vehicle floor 200. Bolts 710 are threadedly connected to the inner side of the threaded cylinders 700, and the bolt shank of the bolt 710 is coaxial with the positioning hole 600a on a horizontal line. When it is necessary to appropriately expand the load-bearing space of the chassis 200, the user can directly pull out the auxiliary chassis 600 and auxiliary baffle 620 at the rear end of the chassis 200, extend it to the appropriate stroke, and then tighten the bolt 710 so that the bolt rod is embedded in the corresponding positioning hole 600a on the side of the auxiliary chassis 600. In this way, the adjustment and fixation of the entire chassis is completed, making the chassis frame more flexible in use.

[0031] Furthermore, a front baffle 220 is fixed to the front end of the vehicle floor 200, and the two ends of the front baffle 220 are fixedly connected to the side baffles 210 on both sides. A door panel 630 is also provided between the two side pillars 610. Here, since the auxiliary floor 600 and the auxiliary baffle 620 are telescopic at the rear end of the vehicle floor 200, that is, occupying the original tailgate panel, we have set an openable and closable door panel 630 at the upper end of the auxiliary baffle 620. The door panel 630 can open to the side or open vertically downwards, etc., which will not be explained in detail here.

[0032] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An electrically powered three-wheeled vehicle liftable floor frame, characterised in that, The system includes a chassis (100), a floor plate (200) is horizontally arranged above the chassis (100), the rear ends of the floor plate (200) are connected to the chassis (100) by hinge seats (300) on both sides, and support columns (400) are vertically fixed on both sides of the front end of the chassis (100). A steel wire rope (420) is movably supported on the top of the support column (400). One end of the steel wire rope (420) is fixedly connected to the front end of the floor plate (200). A winding and unwinding device (500) is provided at the bottom near the middle of the chassis (100) for winding and unwinding the other end of the steel wire rope (420). Side baffles (210) are fixed on both sides of the upper end of the vehicle floor (200). An auxiliary floor plate (600) is slidably extended and retracted on the inner rear end of the vehicle floor (200). An auxiliary baffle (620) is fixedly connected to the auxiliary floor plate (600) and slidably extended and retracted on the inner rear end of the side baffle (210).

2. The electrically powered, three-wheeled, lift- floor vehicle frame of claim 1, wherein: The hinge seat (300) includes a fixed lug (310) fixed to the side wall of the chassis (100) and a pivot (320) with one end fixed to the side wall of the chassis (200) and the other end rotatably connected to the upper end of the fixed lug (310).

3. The electrically powered, three-wheeled, lift- floor vehicle frame of claim 1, wherein: The upper end of the support column (400) is longitudinally rotatably mounted with a fixed pulley (410), and the steel wire rope (420) is wound around the inner top surface of the fixed pulley (410). The front sides of the vehicle floor (200) also have connecting cable blocks (430) that are fixedly connected to one end of the steel wire rope (420).

4. The electrically powered, three-wheeled, lift- floor vehicle frame of claim 1, wherein: The take-up and take-down device (500) includes a bearing seat (510) fixed to the lower part of the chassis (100), a main shaft (520) horizontally movably passing through both sides of the bearing seat (510), a collecting wheel (530) fixed to one end of the main shaft (520) and fixedly wound with the wire rope (420), and a motor (540) for driving the main shaft (520) to rotate axially and fixedly installed at the bottom of the chassis (100).

5. The electrically powered, three-wheeled, lift- floor vehicle frame of claim 1, wherein: The front top of the chassis (100) is fixed with a support balance seat (110) for supporting the chassis plate (200).

6. The electrically powered, three-wheeled, lift- floor vehicle frame of claim 1, wherein: The rear inner side of the vehicle floor (200) has a sliding groove (200a) that slides and matches the auxiliary floor (600), the rear inner side of the side baffle (210) has a sliding groove (210a) that slides and matches the auxiliary baffle (620), and the rear sides of the auxiliary floor (600) are fixed with side posts (610) that are fixedly connected to the rear ends of the auxiliary baffle (620).

7. The electrically powered, three-wheeled, lift- floor vehicle frame of claim 1, wherein: The auxiliary base plate (600) has multiple positioning holes (600a) along its length on one or both sides. The rear end of the vehicle base plate (200) is fixed with a threaded cylinder (700) on one or both sides. The inner side of the threaded cylinder (700) is threaded with a bolt (710), and the bolt shank of the bolt (710) is coaxial with the positioning hole (600a) on a horizontal line.

8. The electric tricycle with a liftable chassis frame according to claim 6, characterized in that: The front end of the vehicle floor (200) is also fixed with a front baffle (220), and the two ends of the front baffle (220) are fixedly connected to the side baffles (210) on both sides. A door panel (630) is also provided between the two side pillars (610).

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