Hidden battery type flat forklift beam composite tube

Abstract

The present invention relates to a hidden battery type flat forklift beam composite tube, comprising a beam tube, a battery compartment is formed in the tube cavity of the beam tube, and the characteristic is that: flat fork tubes are formed on both side walls of the tube cavity of the beam tube, and the flat fork tubes on both sides include an internal section located in the beam tube and an external section extending outside the beam tube. The hidden battery type flat forklift beam composite tube of the present invention has a scientific and reasonable structural design, can effectively improve the strength of the hidden battery type beam tube, and is easy to install and use, while increasing the service life of the battery control line and improving the safety of battery use.

Description

Technical Field

[0001] The invention belongs to the technical field of electric power-assisted vehicles, in particular to a hidden battery-type flat forklift beam composite tube for electric vehicles. Background Art

[0002] The beam tube of an electric vehicle is a core component of the vehicle frame. In particular, the beam tube of existing electric vehicles also serves as a battery storage system. Typically, a hidden battery compartment is installed within the beam tube, creating a single, integrated beam tube with a simple and aesthetically pleasing appearance. Existing beam tubes are welded to the frame risers at the front and to the rear fork at the rear. This approach presents numerous drawbacks: First, the welding and installation process between the beam tube and the rear fork is cumbersome and time-consuming. Furthermore, because the battery is concealed within the battery compartment, a hole must be drilled at the rear end of the beam tube to route the control wires through a cable duct on the inside of the lower cover and then to the rear wheel motors. This complicates installation and exposes the wires to the environment, impacting their service life and safety. Second, because a long slot is required on one side of the beam tube to form the battery compartment, the beam tube's strength is compromised. To ensure its support, the beam tube wall thickness must be increased, resulting in high product costs. Summary of the Invention

[0003] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a hidden battery-type flat forklift beam composite tube, which can effectively improve the strength of the hidden battery-type vehicle beam tube and is easy to install and use, while increasing the service life of the battery control line and improving the safety of battery use.

[0004] The present invention solves the technical problem by the following technical solutions:

[0005] A hidden battery-type flat fork truck beam composite tube includes a truck beam tube, and a battery compartment is formed in the tube cavity of the truck beam tube. The characteristic is that flat fork tubes are formed on both side walls of the tube cavity of the truck beam tube, and the flat fork tubes on both sides include an internal section located in the truck beam tube and an external section extending outside the truck beam tube.

[0006] Moreover, the flat fork tube is made integrally with the vehicle beam tube, and the built-in section of the flat fork tube is located through-through at both side walls of the vehicle beam tube.

[0007] Moreover, the external section of the flat fork tube extends out from the vehicle beam tube and then bends upward in the vertical plane. The angle between the flat fork tube and the vehicle beam tube is 120-160 degrees. The external sections of the flat fork tube on both sides are successively provided with a connecting section, a wide section opened to both horizontal sides, and a parallel installation section at the position extending out of the vehicle beam tube cavity.

[0008] Moreover, the cross section of the flat fork tube is a square cross section, a circular cross section or an elliptical cross section.

[0009] Moreover, a shaft mounting hole is formed in the lower end of the beam tube and the flat fork tube.

[0010] Moreover, a rear axle mounting groove is formed at the rear end portion of the outward section of the flat fork tube.

[0011] Moreover, one or two of the flat fork tubes are formed with a threading inlet hole or a threading outlet hole.

[0012] Moreover, a battery box assembly is fixedly installed in the battery compartment, and a base is formed on the lower part of the battery box assembly and is embedded in the upper surface of the flat fork tube.

[0013] Moreover, the upper surface of the portion of the flat fork tube located inside the vehicle beam tube is formed with ridges along its length direction, and the lower surface of the battery box holder is formed with a slot for engaging with the ridges.

[0014] Moreover, a vertical pipe is fixedly installed on the front end portion of the beam tube.

[0015] The advantages and beneficial effects of the present invention are:

[0016] 1. This hidden battery-type flat fork beam composite tube has flat fork tubes on both sides of the tube cavity of the beam tube. One end of the flat fork tube on both sides is located inside the beam tube, and the other end extends outside the beam tube, effectively improving the convenience of using the integrated beam tube. There is no need to weld the beam tube and the rear flat fork, etc., which reduces installation time.

[0017] 2. This hidden battery-type flat fork beam composite tube is made of an integrated flat fork tube and a beam tube. The flat fork tube is located on both side walls of the beam tube, forming reinforced cavities on both sides of the tube cavity of the beam tube, thereby effectively improving the overall stiffness of the beam tube, improving structural stability and support strength, ensuring the safety of the integrated beam tube, improving product quality and reducing product costs.

[0018] 3. This hidden battery-type flat fork beam composite tube, the flat fork tube extends from the beam tube and then bends upward in the vertical plane. The angle between the flat fork tube and the beam tube is 120-160 degrees. The flat fork tubes on both sides are sequentially formed with a connecting section, a wide section opened to both horizontal sides, and a parallel installation section at the position where they extend out of the beam tube cavity. Its structure is similar to the connection shape of the existing rear flat fork and beam tube, ensuring versatility. After bending, the flat fork tube still maintains its cross-sectional shape and has strong structural stability.

[0019] 4. The composite tube of the hidden battery-type flat forklift beam has a square cross-section, and its height is greater than its width. The lower end of the beam tube and the flat fork tube are provided with a through axle mounting hole to facilitate the installation of the pedal shaft. The rear end of the flat fork tube is provided with a rear axle mounting slot to facilitate the installation of components such as the rear wheel axle.

[0020] 5. This hidden battery-type flat forklift beam composite tube has one or two flat fork tubes with wire entry holes and wire exit holes. The control wire as a whole passes through the inside of the beam tube and the flat fork tube to the rear wheel motor. The control wire is installed in a hidden manner, effectively avoiding damage caused by exposure to the outside, ensuring safety in use and service life.

[0021] 6. The hidden battery-type flat forklift beam composite tube has a battery box assembly fixedly installed in the battery compartment. The lower part of the battery box assembly is provided with a holder embedded in the upper surface of the flat fork tube. The upper surface of the flat fork tube located inside the vehicle beam tube is provided with ridges along its length. The lower surface of the holder of the battery box is provided with a slot that is engaged with the ridges. The built-in section of the flat fork tube can be effectively engaged and fixed with the battery box, playing a role in positioning and installation.

[0022] 7. The composite tube of the beam of this hidden battery-type flat forklift has a vertical tube fixedly installed at the front end of the beam tube, realizing an integrated design of the frame body, which is convenient for product assembly and use.

[0023] 8. The hidden battery-type flat forklift beam composite tube of the present invention has a scientific and reasonable structural design, which can effectively improve the strength of the hidden battery-type vehicle beam tube and is easy to install and use. At the same time, it increases the service life of the battery control line and improves the safety of battery use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of a composite tube for a hidden battery-type flat forklift beam;

[0025] Figure 2 for Figure 1 Half-section view;

[0026] Figure 3 for Figure 1 A cross-sectional perspective view of

[0027] Figure 4 for Figure 1 Cross-sectional view of .

[0028] Reference numerals

[0029] 1-vertical tube, 2-beam tube, 3-battery box, 4-flat fork tube, 5-installation section, 6-wide section, 7-connecting section, 8-axle mounting hole, 9-rear axle mounting slot, 10-tube cavity, 11-reinforcement cavity, 12-slot, 13-ridge, 14-battery compartment, 15-internal section, 16-external section, 17-seat. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below through specific examples. The following examples are only illustrative and not restrictive, and the scope of protection of the present invention cannot be limited thereto.

[0031] A composite tube for a hidden battery-powered flat forklift beam comprises a beam tube 2 with a battery compartment 14 formed within the beam tube lumen, which houses a battery box 3. Flat fork tubes 4 are formed on either side of the beam tube lumen 10. These tubes comprise an internal section 15 positioned within the beam tube and an external section 16 extending beyond the tube. This integrated beam tube design significantly enhances ease of use, eliminating the need for welding the beam tube to the rear flat fork and reducing installation time.

[0032] The flat fork tube is made of an integral body with the beam tube. The built-in section of the flat fork tube is located on both side walls of the beam tube, forming reinforced cavities 11 on both sides of the tube cavity of the beam tube, thereby effectively improving the overall stiffness of the beam tube, improving structural stability and support strength, ensuring the safety of the integrated beam tube, improving product quality and reducing product costs.

[0033] After the flat fork tube extends out from the beam tube, it is bent upward in the vertical plane. The angle between the flat fork tube and the beam tube is 120-160 degrees. The flat fork tubes on both sides are successively provided with a connecting section 7, a wide section 6 opened to both horizontal sides, and a parallel installation section 5 in the external section extending out of the beam tube cavity. Its structure is similar to the connection shape of the existing rear flat fork and the beam tube, ensuring versatility. After bending, the flat fork tube still maintains its cross-sectional shape and has strong structural stability.

[0034] The cross section is square, with the height greater than the width. A through-hole 8 is formed between the lower end of the beam tube and the fork tube to facilitate the installation of the pedal axle. A rear axle mounting slot 9 is formed at the rear end of the fork tube to facilitate the installation of components such as the rear wheel axle. The fork tube can be square, circular, or oval in cross section.

[0035] One or two of the flat fork tubes are provided with a wire entry hole or a wire exit hole (omitted in the figure). The control wire as a whole passes through the inside of the beam tube and the flat fork tube to the rear wheel motor. The control wire is installed in a hidden manner, effectively avoiding damage caused by exposure to the outside, thereby ensuring safety of use and service life.

[0036] The battery compartment houses a battery box assembly, the lower portion of which is fitted with a retaining plate 17 that engages with the upper surface of the flat fork tube. The upper surface of the flat fork tube, which lies within the beam tube, is provided with a ridge 13 along its length. The lower surface of the battery box retaining plate is provided with a slot 12 that engages with the ridge. This internal section of the flat fork tube effectively secures the battery box to the retaining plate, providing a secure, fixed position.

[0037] The front end of the beam tube is fixed with the vertical tube 1, realizing the integrated design of the frame body and facilitating the assembly and use of the product. After the external section of the flat fork tube is omitted, the beam tube can also be used as a composite tube with good support strength.

[0038] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A hidden battery type flat forklift beam composite tube, comprising a beam tube, a battery compartment is formed in the tube cavity of the beam tube, Features: Flat fork tubes are formed on both side walls of the tube cavity of the beam tube, and the flat fork tubes on both sides include an internal section located inside the beam tube and an external section extending outside the beam tube; The flat fork tube is made integrally with the beam tube, and the internal section of the flat fork tube is located through the two side walls of the beam tube; The flat fork tube external section extends out from the beam tube and then bends upward in the vertical plane. The angle between the flat fork tube and the beam tube is 120-160 degrees. The flat fork tube external sections on both sides are sequentially provided with a connecting section, a wide section opened to both sides horizontally, and a parallel installation section at the position extending out of the beam tube cavity. The lower end of the beam tube and the flat fork tube are provided with a through shaft mounting hole; The rear end of the outer section of the flat fork tube is formed with a rear axle mounting groove; One or two of the flat fork tubes are provided with a threading inlet hole or a threading outlet hole; A battery box assembly is fixedly installed in the battery compartment, and a clamping seat is formed at the lower part of the battery box assembly and is embedded with the upper surface of the flat fork tube; The upper surface of the portion of the flat fork tube located inside the vehicle beam tube is provided with ridges along its length direction, and the lower surface of the battery box holder is provided with a slot for engaging with the ridges.

2. According to claim 1, a composite tube for a hidden battery-type flat forklift beam, Features: The cross section of the flat fork tube is a square cross section, a circular cross section or an elliptical cross section.

3. According to claim 1, a composite tube for a hidden battery-type flat forklift beam, Features: A vertical pipe is fixedly mounted on the front end of the beam tube.

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