Vehicle-mounted hydrogen cylinder placing rack

Abstract

The utility model discloses a kind of vehicle-mounted hydrogen cylinder racks, it is related to the technical field of vehicle-mounted hydrogen energy equipment fixation.It aims to solve the problem of single placement of existing rack, large space occupation, unable to adjust clamping force with vehicle state and poor adaptability to different size cylinders.The rack includes two spaced apart long strip vehicle body connecting racks, and a plurality of clamping rack bodies can be installed thereon;Each rack body includes a support, a clamping assembly and a drive assembly, the clamping assembly has two arc-shaped clamping members with driven gears, and the drive motor of the drive assembly drives the driven gears through a driving gear, causing the arc-shaped clamping members to open and close synchronously;The drive motor is connected to the vehicle controller.The utility model realizes multiple cylinder placement to save space, and the clamping force can be adjusted according to the vehicle motion mode or speed, suitable for different size cylinders, and the clamping is stable, easy to install and maintain, suitable for the safe fixation of vehicle-mounted hydrogen cylinders.

Description

Technical Field

[0001] This utility model provides a storage rack, and particularly relates to a vehicle-mounted hydrogen cylinder storage rack. Background Technology

[0002] A vehicle-mounted hydrogen cylinder rack is a device used to secure hydrogen cylinders on a car. Its function is to ensure the stability of the hydrogen cylinders during vehicle operation and to prevent safety hazards or equipment damage caused by shaking, collisions, etc. It is an important component of ensuring the safety of hydrogen storage in a vehicle-mounted hydrogen energy system.

[0003] Existing vehicle-mounted hydrogen cylinder racks are mostly one-piece fixed structures, with a basic structure that typically only has a single cavity to hold the hydrogen cylinder. This structure not only only allows for the placement of a single hydrogen cylinder, occupying a large space, but also cannot adaptively adjust the clamping degree of the hydrogen cylinder according to different vehicle operating states (such as starting sport mode, excessive speed, etc.). At the same time, existing racks are also difficult to provide effective and stable clamping support for hydrogen cylinders of different sizes, and they are significantly lacking in installation flexibility. They cannot flexibly expand or adjust the layout of the rack according to actual needs, making it difficult to meet the diverse, adaptable, and space-efficient requirements for hydrogen cylinder placement in vehicle scenarios. Utility Model Content

[0004] In order to solve the above problems, this application provides a vehicle-mounted hydrogen cylinder placement rack, which solves the problems of space occupation by single placement, inability to adjust clamping force in time with vehicle movement mode, and insufficient clamping stability for hydrogen cylinders of different sizes.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a vehicle-mounted hydrogen cylinder placement rack, including two vehicle body connecting frames arranged at intervals along the horizontal direction, wherein the vehicle body connecting frame is a long strip aluminum profile structure, and several clamping and placement racks can be installed along its length.

[0006] Each of the clamping and placing frames includes a support, a clamping assembly disposed on the support, and a driving assembly for driving the clamping assembly to move;

[0007] The bracket is a plate-shaped structure with a central cavity, and its two sides are connected to the vehicle body connecting frame via connectors. The clamping assembly includes two opposing arc-shaped clamping members for clamping hydrogen cylinders from both sides. The driving assembly includes a drive motor and a gear transmission mechanism connected to the output end of the drive motor. The gear transmission mechanism is connected to the two arc-shaped clamping members to drive the two arc-shaped clamping members to move closer or further away synchronously, thereby clamping or releasing hydrogen cylinders of different sizes. Each clamping and placement frame is equipped with an independent drive motor to adjust the clamping degree according to the vehicle status.

[0008] Preferably, the cross-section of the vehicle body connecting frame is a rectangular aluminum profile structure with multiple chambers, and the vehicle body connecting frame is provided with a plurality of mounting holes spaced apart along its length for connecting with the bracket.

[0009] Preferably, the bracket has outwardly extending connecting ears on both sides, and the connecting ears are connected to limiting sliding members by bolts. The limiting sliding members are engaged with the mounting holes on the vehicle body connecting frame to slide and fix the bracket between the two vehicle body connecting frames.

[0010] Preferably, the arc-shaped clamping component includes an arc-shaped main body and a clamping plate disposed at one end of the arc-shaped main body. The arc-shaped main body and the clamping plate are fixedly connected by a bolt structure. The end of the arc-shaped main body away from the clamping plate is a driven gear. A connecting hole is provided at the center of the driven gear. A fixing rod is provided inside the connecting hole, passing through itself and the support plate. The fixing rod serves as the center of rotation of the arc-shaped main body.

[0011] Preferably, the gear transmission mechanism includes a driving gear connected to the output shaft of the drive motor and meshing with the driven gear. The two driven gears mesh with each other, and one of the driven gears meshes with the driving gear, so that the drive motor drives the two driven gears to rotate synchronously in opposite directions, thereby driving the two arc-shaped clamping members to move closer or further away synchronously.

[0012] Preferably, the drive motor is mounted on the lower part of the bracket, and the output shaft of the drive motor extends horizontally and is connected to the gear transmission mechanism.

[0013] Preferably, the inner side of the arc-shaped body of the two arc-shaped clamping members is provided with an anti-slip pad layer to increase the friction with the surface of the hydrogen cylinder.

[0014] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages compared with the prior art:

[0015] Existing hydrogen cylinder storage racks suffer from several drawbacks: they can only hold a single cylinder, occupy a large space, cannot adapt the clamping force to different vehicle conditions, and lack sufficient stability and adaptability when holding hydrogen cylinders of different sizes. This vehicle-mounted hydrogen cylinder storage rack solves the space-consuming problem of single-cylinder placement by employing two horizontally spaced, elongated aluminum profile body connecting frames. The design allows for the installation of multiple clamping and storage racks along the length of the frame. Each clamping and storage rack is equipped with an independent drive motor, which is connected to two arc-shaped clamping components and clamping plates, each with a driven gear, via a gear transmission mechanism and screws. The bracket is fixed in place, with an anti-slip pad on the inner side of the arc-shaped main body. The arc-shaped main body is connected by a fixed rod that runs through itself and the bracket as the rotation center, which drives the two arc-shaped clamping parts to move closer or further away synchronously. This achieves effective and stable clamping of hydrogen cylinders of different sizes, and can also adaptively adjust the clamping degree when the car is in motion or at high speed. At the same time, the connecting ears on both sides of the bracket are connected to the mounting holes on the vehicle body connecting frame through bolted limiting sliding parts, so that the bracket can be stably and flexibly fixed between the two vehicle body connecting frames, further ensuring the installation stability and adjustment convenience of the overall structure.

[0016] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the hydrogen cylinder installation state of a vehicle-mounted hydrogen cylinder placement rack according to this utility model.

[0018] Figure 2 This is a cross-sectional view of the vehicle body connecting frame portion of a vehicle-mounted hydrogen cylinder placement rack according to this utility model.

[0019] Figure 3 This is an exploded view of the clamping part of a vehicle-mounted hydrogen cylinder placement rack according to this utility model.

[0020] Figure 4 This is a schematic diagram of the drive connection of the clamping part of a vehicle-mounted hydrogen cylinder placement rack according to this utility model.

[0021] As shown in the figure:

[0022] 1. Vehicle body connecting frame; 2. Clamping and placing frame; 3. Bracket; 4. Clamping assembly; 5. Drive assembly; 6. Mounting hole; 7. Connecting ear; 8. Arc-shaped main body; 9. Clamping plate; 10. Fixing rod; 11. Driven gear; 12. Driving gear. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] like Figure 1 and Figure 2 As shown, a vehicle-mounted hydrogen cylinder placement rack includes two vehicle body connecting frames 1 spaced apart in the horizontal direction. The vehicle body connecting frame 1 is a long strip aluminum profile with a rectangular structure having a multi-chamber cross-section. Multiple mounting holes 6 are spaced apart along its length to install several clamping placement rack bodies 2. The bracket 3 of each clamping placement rack body 2 is a plate-shaped structure with a receiving cavity in the middle. Connecting ears 7 extending outward are provided on both sides. The connecting ears 7 are connected to a limiting sliding member by bolts. The limiting sliding member engages with the mounting holes 6 on the vehicle body connecting frame 1, thereby slidingly fixing the bracket 3 between the two vehicle body connecting frames 1.

[0027] In this embodiment, in the vehicle-mounted hydrogen cylinder placement rack, the two ends of the fixing rod 10 are fixedly connected to the plate of the bracket 3, so that the arc-shaped main body 8 can rotate stably around the fixing rod 10; the output shaft of the drive motor is fixed to the drive gear 12 through a key connection, the drive gear 12 is in a vertical meshing state with one of the driven gears 11, and the two driven gears 11 are horizontally meshing with each other, and both are installed in the receiving cavity of the bracket 3 through the fixing rod 10; the bolt connection between the arc-shaped main body 8 and the clamping plate 9 is detachable, and the anti-slip pad is fixed to the inner side of the arc-shaped main body 8 by adhesive. From the perspective of implementation key points and innovation, the beneficial effects of this structural combination are as follows: First, through the meshing transmission design of the active gear and the double driven gear, the synchronous reverse rotation of the two arc-shaped clamping parts is realized, ensuring the consistency and stability of the clamping action and solving the problem of accurate alignment when clamping hydrogen cylinders of different sizes; Second, the configuration of the independent drive motor provides a structural basis for adjusting the clamping degree according to the vehicle status, breaking through the limitation of traditional fixed clamping that cannot be dynamically adjusted; Third, the detachable combination of the arc-shaped main body and the clamping plate and the arc-shaped adaptation structure not only expand the clamping adaptation range, but also facilitate the replacement and maintenance of components. In the process of solving the problem, the specific functions and benefits of each structure are as follows: the arc-shaped structure of the arc-shaped main body 8 can fit the surface of hydrogen cylinders of different diameters, achieving large-area contact; the clamping plate 9 further increases the contact area with the gas cylinder, improving the clamping firmness; the driven gear 11 converts the power of the driving gear into the rotational motion of the arc-shaped clamping component, ensuring efficient transmission; the fixing rod 10 provides a stable rotation fulcrum for the arc-shaped clamping component, preventing offset during clamping; the drive motor serves as a power source, providing power support for clamping adjustment; the driving gear 12 realizes the power transmission between the drive motor and the driven gear, ensuring transmission accuracy; the anti-slip pad layer increases the friction with the hydrogen cylinder, preventing the gas cylinder from sliding during vehicle movement and improving clamping stability.

[0028] Regarding the statement that "the drive motor is electrically connected to the vehicle's Controller Unit (VCU) via a control circuit, and the VCU can send control signals to the drive motor according to the vehicle's motion mode or driving speed to adjust the clamping degree of the arc-shaped clamping component on the hydrogen cylinder," in a specific implementation, the drive motor of each clamping and placing frame 2 is connected to the vehicle's VCU via a control circuit. The VCU can obtain status information such as whether the vehicle is in motion mode and its current driving speed. When the vehicle starts in motion mode or the speed exceeds a preset threshold (e.g., 80 km / h), the VCU sends a signal to the control circuit, which drives the corresponding drive motor of the clamping and placing frame 2 to operate. The output shaft of the drive motor drives the drive gear 12 in the gear transmission mechanism 6 to rotate, and the drive gear 12 interacts with one of the... Driven gear 11 meshes, and two driven gears 11 mesh with each other, thereby driving two arc-shaped clamping parts (composed of an arc-shaped main body 8 and a clamping plate 9 fixed by bolts, with an anti-slip pad on the inner side of the arc-shaped main body 8, and the arc-shaped main body 8 rotating around the fixed rod 10 that passes through itself and the plate of the bracket 3) to rotate synchronously in opposite directions, so that the two arc-shaped clamping parts move closer to the hydrogen cylinder to increase the clamping force and meet the stable clamping requirements of the vehicle at high speed or in motion mode; when it is necessary to clamp hydrogen cylinders of different sizes, the control circuit sends a corresponding control signal to the drive motor, and the drive motor drives the gear transmission mechanism 6 to adjust the distance between the two arc-shaped clamping parts. By utilizing the arc-shaped adaptation structure and anti-slip pad of the arc-shaped main body 8, effective and stable clamping support is achieved for hydrogen cylinders of different sizes from both sides, thereby achieving the expected purpose.

[0029] like Figure 3 and Figure 4 As shown, each clamping rack 2 of the vehicle-mounted hydrogen cylinder placement rack also includes a clamping assembly 4 and a driving assembly 5 mounted on a bracket 3. The clamping assembly 4 includes two opposing arc-shaped clamping members. Each arc-shaped clamping member includes an arc-shaped main body 8 and a clamping plate 9 at one end, which are fixedly connected by bolts. The end of the arc-shaped main body 8 away from the clamping plate 9 is a driven gear 11. A fixing rod 10 is provided in the connecting hole at the center of the driven gear 11, passing through itself and the plate of the bracket 3. The fixing rod 10 serves as the central axis for the rotation of the arc-shaped main body 8. The drive assembly 5 includes a drive motor mounted on the lower part of the bracket 3. Its output shaft extends horizontally and is connected to the gear transmission mechanism 6. The gear transmission mechanism 6 includes a drive gear 12 connected to the output shaft of the drive motor. The drive gear 12 meshes with one of the driven gears 11. The two driven gears 11 mesh with each other and can drive the two arc-shaped clamping parts to rotate synchronously in opposite directions to achieve closeness or distance. The inner side of the arc-shaped body 8 is provided with an anti-slip pad. Each clamping and placement frame 2 is equipped with an independent drive motor to adjust the clamping degree according to the vehicle status.

[0030] In this implementation scheme, the drive motor is fixed to the pre-set mounting base at the lower part of the bracket 3 by bolts. Its output shaft is connected to the drive gear 12 by an transition fit and positioned by a shaft shoulder to prevent the drive gear 12 from moving axially. The two ends of the fixing rod 10 pass through the plate of the bracket 3 and are locked with nuts to achieve a rigid connection with the bracket 3. Gaskets are added at the bolt connection between the arc-shaped body 8 and the clamping plate 9 to enhance the connection sealing and firmness. The anti-slip pad is made of elastic rubber and is attached to the inner side of the arc-shaped body 8 by hot pressing. From the perspective of implementation points and innovation, the beneficial effects of this structural combination are reflected in the following aspects: First, the mounting base connection between the drive motor and the bracket 3 and the positioning design of the output shaft ensure the stability of the power source operation and avoid meshing deviation caused by motor shaking during transmission. Second, the nut locking structure of the fixing rod 10 improves the reliability of the rotation fulcrum of the arc-shaped clamping part and solves the problem of fulcrum loosening after long-term use. Third, the elastic rubber anti-slip pad has both anti-slip and buffering functions, breaking through the limitation of traditional rigid clamping that easily causes wear to the gas cylinder. In the process of solving the problem, the specific functions and benefits of each structure are as follows: the mounting base at the bottom of the bracket 3 provides a precise installation reference for the drive motor, ensuring the coaxiality of the drive motor and the gear transmission mechanism 6; the shoulder positioning of the drive gear 12 avoids axial displacement during transmission, ensuring the continuity of meshing transmission; the nut locking structure of the fixing rod 10 prevents it from rotating relative to the bracket 3, ensuring the consistency of the rotation trajectory of the arc-shaped clamping component; the rubber anti-slip pad increases friction while absorbing the impact of bumps during vehicle operation, protecting the outer surface of the hydrogen cylinder; the gasket between the arc-shaped body 8 and the clamping plate 9 can disperse the bolt pressure, prevent the components from deforming due to uneven force, and extend the service life; the independent installation layout of the independent drive motors allows multiple clamping and placement frames 2 to respond to vehicle status signals respectively, realizing personalized clamping adjustment for different gas cylinders and improving the overall adaptability flexibility.

[0031] In actual use, this device requires the vehicle's onboard battery to power the drive motors of each clamping and mounting frame. The connecting wires between the drive motors and the onboard battery are made of PVC insulated wire, with copper terminals at the ends for reliable connection. The control circuit needs to be equipped with relays and a microcontroller to receive vehicle status signals sent by the vehicle controller via the CAN bus and convert them into drive motor operation commands. The vehicle body connecting frame needs to be fixed to the pre-set installation position on the vehicle body using expansion bolts made of 6061 aluminum alloy. A torque wrench must be used to ensure the specified torque value is reached when tightening the expansion bolts. The bracket is made of 5052 aluminum alloy to balance strength and lightweight design. The anti-slip pad on the inner side of the arc-shaped clamp is made of nitrile rubber to enhance anti-slip performance and withstand the hydrogen environment. The connection between the drive motor output shaft and the drive gear needs to be fitted with a silicone rubber waterproof seal to prevent rainwater or dust from entering. At the same time, when installing the clamping and placement rack, sufficient installation space must be reserved to match the valve protection cover of the hydrogen cylinder to ensure that the clamping action does not interfere with valve operation. In addition, insulating tape must be used to wrap and insulate the wiring of the control circuit to prevent short circuits caused by vibration during vehicle operation. Through the combination of these existing technologies, devices and materials, this vehicle-mounted hydrogen cylinder placement rack can be stably and safely integrated into the vehicle system and achieve the expected functions.

[0032] Specifically, during the installation phase of this device, the vehicle body connecting frame must first be positioned according to the pre-set installation baseline on the vehicle body. Using an electric drill, mounting holes for expansion bolts are drilled at the corresponding positions on the vehicle body. The expansion bolts are then inserted into the holes and tightened with a torque wrench to a torque of 35-40 N·m to ensure a rigid connection between the vehicle body connecting frame and the vehicle body. When installing the clamping and placing frame, the connecting ears on both sides of the bracket must be aligned with the mounting holes of the vehicle body connecting frame. After calibrating the level of the bracket with a level, the limiting sliding component is connected to the connecting ears with bolts, and the limiting sliding component is engaged in the mounting hole. After initial fixing, the bolts are tightened again with a torque wrench. During circuit routing, crimping pliers are used to crimp the terminals of the drive motor to the wires of the control circuit. The wires are laid along the pre-reserved wiring harness channels on the vehicle body and secured with nylon cable ties every 15-20 cm. The signal terminals of the control circuit are connected to the signal output terminals of the vehicle controller via the CAN bus interface. After connection, the wiring joints are wrapped with insulating tape and a waterproof sleeve is installed. During the system debugging phase, an on-board diagnostic tool needs to be connected to the vehicle controller. The clamping force adjustment threshold can be set through the diagnostic tool's operating interface. For example, the clamping force increase triggered by the sports mode can be set to 30%, and the clamping force increase when the speed exceeds 90km / h can be set to 25%. At the same time, the clamping compatibility of different sized hydrogen cylinders can be tested. The diagnostic tool sends control commands to drive the motor to run and observes whether the movement trajectory of the arc-shaped clamping parts is smooth, ensuring that the two arc-shaped clamping parts move synchronously and clamp in place. In daily use, when the driver switches to Sport mode or the vehicle speed reaches a set threshold, the vehicle controller automatically sends a signal to the control circuit. The control circuit drives the motor to rotate forward, which in turn drives the drive gear. Through the meshing of the driven gear, the two arc-shaped clamping parts move closer together, increasing the clamping force. When replacing the hydrogen cylinder, a release command is sent via the operation button on the vehicle's central control screen. The motor reverses, causing the arc-shaped clamping parts to move away. After removing the old cylinder and placing the new cylinder, a clamping command is sent again to make the arc-shaped clamping parts fit against the cylinder surface. During regular maintenance, a multimeter should be used to check the winding resistance of the drive motor to ensure that the resistance value is within the standard range. At the same time, the meshing of the gear transmission mechanism should be checked. If abnormal noise is found, lithium-based grease should be added, and the tightness of each bolt should be checked with a wrench to prevent loosening from affecting the clamping stability.

[0033] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A vehicle-mounted hydrogen cylinder storage rack, characterized in that, It includes two vehicle body connecting frames (1) spaced apart in the horizontal direction. The vehicle body connecting frame (1) is a long strip aluminum profile structure, and several clamping and placing frames (2) can be installed along its length. Each of the clamping and placing frames (2) includes a support (3), a clamping assembly (4) disposed on the support (3), and a driving assembly (5) for driving the clamping assembly (4) to move. The bracket (3) has a plate-like structure with a cavity in the middle, and its two sides are connected to the vehicle body connecting frame (1) through connectors; the clamping assembly (4) includes two oppositely arranged arc-shaped clamps for clamping the hydrogen cylinder from both sides; The drive assembly (5) includes a drive motor and a gear transmission mechanism connected to the output end of the drive motor. The gear transmission mechanism is connected to the two arc-shaped clamping members to drive the two arc-shaped clamping members to move closer or further away synchronously, thereby clamping or releasing hydrogen cylinders of different sizes. Each clamping and placement frame (2) is equipped with an independent drive motor to adjust the clamping degree according to the vehicle status. The drive motor is electrically connected to the vehicle controller via a control circuit. The vehicle controller can send control signals to the drive motor according to the vehicle's motion mode or driving speed to adjust the clamping degree of the arc-shaped clamp on the hydrogen cylinder.

2. The vehicle-mounted hydrogen cylinder placement rack according to claim 1, characterized in that, The cross section of the vehicle body connecting frame (1) is a rectangular aluminum profile structure with multiple chambers, and the vehicle body connecting frame (1) is provided with a plurality of mounting holes (6) spaced apart along its length for connecting with the bracket (3).

3. The vehicle-mounted hydrogen cylinder placement rack according to claim 2, characterized in that, The bracket (3) has outwardly extending connecting ears (7) on both sides. The connecting ears (7) are connected to a limiting sliding member by bolts. The limiting sliding member engages with the mounting hole (6) on the vehicle body connecting frame (1) to slide and fix the bracket (3) between the two vehicle body connecting frames (1).

4. The vehicle-mounted hydrogen cylinder placement rack according to claim 1, characterized in that, The arc-shaped clamping component includes an arc-shaped main body (8) and a clamping plate (9) located at one end of the arc-shaped main body (8). The arc-shaped main body (8) and the clamping plate (9) are fixedly connected by a bolt structure. The end of the arc-shaped main body (8) away from the clamping plate (9) is a driven gear (11). A connecting hole is provided at the center of the driven gear (11). A fixing rod (10) is provided inside the connecting hole, which passes through itself and the bracket (3) plate. The fixing rod (10) serves as the center of rotation of the arc-shaped main body (8).

5. The vehicle-mounted hydrogen cylinder placement rack according to claim 4, characterized in that, The gear transmission mechanism includes a drive gear (12) connected to the output shaft of the drive motor and meshing with the driven gear (11). The two driven gears (11) mesh with each other, and one of the driven gears (11) meshes with the drive gear (12) so that the drive motor drives the two driven gears (11) to rotate synchronously in opposite directions, thereby driving the two arc-shaped clamping members to move closer or further away synchronously.

6. The vehicle-mounted hydrogen cylinder storage rack according to claim 1, characterized in that, The drive motor is mounted on the lower part of the bracket (3), and the output shaft of the drive motor extends horizontally and is connected to the gear transmission mechanism.

7. The vehicle-mounted hydrogen cylinder storage rack according to claim 1, characterized in that, The inner side of the arc-shaped body (8) of the two arc-shaped clamps is provided with an anti-slip pad layer to increase the friction with the surface of the hydrogen cylinder.

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