Power battery suspension device for heavy-load vehicle

Abstract

The utility model relates to a suspension device for a power battery of a heavy-duty vehicle model, which solves the problems of disassembly and assembly of the power battery of the heavy-duty vehicle model. Comprising a vehicle body load platform, a support and a battery box, power battery hanging guide rails are connected with the vehicle body load platform through the support, the two parallel and symmetrical power battery hanging guide rails are arranged and distributed below the vehicle body load platform, the two opposite sides of the two power battery hanging guide rails are rectangular grooves, and the rectangular grooves are used for supporting the battery box; a plurality of pulleys are arranged at the two ends of the battery box and make contact with the bottom of the rectangular groove, and the battery box is pushed in or pulled out through the power battery hanging guide rail; the sinking grooves are formed in the power battery hanging guide rail and are in a semi-arc shape, and the number and the adjacent distance of the sinking grooves in the power battery hanging guide rail are consistent with those of the pulleys of the battery box.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of mechanical suspension, in particular to a heavy-duty vehicle power battery suspension device. BACKGROUND

[0002] In recent years, port container horizontal transport vehicles have also gradually developed towards electrification. The power battery provides power for the container horizontal transport carrier. In order to achieve the requirement of endurance, the horizontal transport carrier is usually equipped with a power battery pack with large volume and heavy weight. Due to poor road conditions and harsh environment in the port area, the battery pack needs to be frequently maintained and repaired.

[0003] The existing power battery mounting method of the vehicle is usually to directly fix the power battery box above the vehicle frame. Many hoisting equipment is needed to assist in disassembly and assembly. The steps of disassembling the battery suspension device or disassembling the battery box are complicated, which is not conducive to battery maintenance and replacement. Once the battery fails, the equipment is often stopped, which affects production. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at overcoming at least one defect of the prior art, providing a heavy-duty vehicle power battery suspension device, solving the problem of disassembly and installation of the heavy-duty vehicle power battery.

[0005] The utility model provides a heavy-duty vehicle power battery suspension device, including vehicle body load platform, support, battery box, the device includes:

[0006] Power battery suspension guide rail, power battery suspension guide rail is connected with vehicle body load platform through support, is equipped with two parallel and symmetrical power battery suspension guide rails, is distributed below vehicle body load platform, two power battery suspension guide rails opposite sides are rectangular recesses, the rectangular recess is used for supporting battery box;

[0007] Pulley, a plurality of pulleys are arranged at both ends of the battery box, the pulley is in contact with the bottom of the rectangular recess, and the battery box is pushed in or pulled out through the power battery suspension guide rail;

[0008] Sunken recess, the sunken recess is arranged on the power battery suspension guide rail and is a semicircular arc, the number and adjacent distance of the sunken recess on the power battery suspension guide rail are consistent with the pulley of the battery box.

[0009] The main advantages of the utility model are:

[0010] 1. The power battery suspension guide rail design can quickly push and pull the battery box.

[0011] 2. The sunken recess limiting design in the power battery suspension guide rail uses the gravity of the battery box itself to be self-locked in the limit, which effectively prevents displacement.

[0012] 3. Set a circular arc transition at the entrance and exit of the sunken groove to reduce the collision stress of the pulley sliding with the sunken groove of the power battery suspension rail.

[0013] 4. The structure design of the anti-vibration device greatly improves the stability and anti-vibration during movement, and the durability of the bracket and the battery box is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a heavy-duty vehicle power battery suspension device schematic diagram of the utility model.

[0015] Figure 2 It is a power battery suspension rail schematic diagram of the utility model.

[0016] Figure 3 It is a bracket schematic diagram of the utility model.

[0017] Figure 4 It is an anti-vibration device schematic diagram of the utility model.

[0018] Figure 5 It is a sunken groove schematic diagram of the utility model.

[0019] Figure 6 It is a pulley sliding into a sunken groove schematic diagram of the utility model.

[0020] The utility model drawing mark is: 1: car body load platform;2: bracket;3: battery box;4: power battery suspension rail;5: rectangular groove;6: pulley;7: sunken groove;8: transition surface;9: protrusion;10: anti-vibration device;11: bolt hole. DETAILED DESCRIPTION

[0021] The utility model drawing is only used for example explanation, and cannot be understood as the limitation of the utility model. In order to better illustrate the following embodiment, some components of the drawing will be omitted, enlarged or reduced, and the size of actual product is not represented;For those skilled in the art, it is understandable that some well-known structures and their description in the drawing can be omitted.

[0022] The embodiment of the application provides a heavy-duty vehicle power battery suspension device, including car body load platform 1, bracket 2, battery box 3, the device includes:

[0023] Power battery suspension rail 4, the power battery suspension rail 4 is connected with car body load platform 1 by bracket 2, is equipped with two parallel and symmetrical power battery suspension rails 4, is distributed below car body load platform 1, the two power battery suspension rails 4 opposite sides are rectangular groove 5, the rectangular groove 5 is used to support the battery box 3;

[0024] Pulleys 6, several pulleys 6 are arranged at both ends of the battery box 3, the pulleys 6 are in contact with the bottom of the rectangular groove 5, and the battery box 3 is pushed in or pulled out through the power battery suspension rail 4;

[0025] Sunken grooves 7, the sunken grooves 7 are arranged on the power battery suspension rail 4, are semicircular arcs, and the number and adjacent distance of the sunken grooves 7 on the power battery suspension rail 4 are consistent with the pulleys 6 of the battery box 3.

[0026] In the embodiment, the power battery is applied to the dismounting and mounting of the terminal intelligent guide vehicle. The terminal intelligent guide vehicle has a large load, and the required battery power is sufficient. Therefore, the corresponding power battery generally has a large size and weight. In addition, the terminal intelligent guide vehicle belongs to automatic operation, and the damage of the battery is inevitable under high-frequency use. In particular, the power battery of the relatively old terminal intelligent guide vehicle has a high frequency of maintenance and repair. The dismounting, mounting and mounting of the power battery are heavy work. Therefore, the present application is proposed to solve the following problems:

[0027] The power battery suspension rail 4 structure is adopted to simplify the mounting and replacement process of the battery box 3. The battery box 3 can be easily pushed in or pulled out along the power battery suspension rail 4 by using a forklift, thereby reducing the difficulty of the workers and saving time. The vehicle body load platform 1, the support 2 and the power battery suspension rail 4 are independently designed, and then assembled to form a suspension system. The modular degree is high, and the subsequent expansion and maintenance are facilitated. The maintenance cost is low.

[0028] By designing the limiting structure of the sunken groove 7 on the power battery suspension rail 4, and adding the self-weight of the battery box 3, the battery box 3 is fixed on the power battery suspension rail 4, and the stability and safety are high. The design of the sliding rail and the suspension system is suitable for different vehicle models and scenes, and has obvious advantages in large and special vehicles that frequently replace batteries.

[0029] In some embodiments, the device further comprises an excessive surface 8 arranged at the entrance and exit of the sunken groove 7 limiting structure, and the excessive surface 8 is a circular arc. The circular arc excessive surface 8 is arranged at the entrance and exit of the sunken groove 7 at both ends, so as to reduce the collision stress of the pulley 6 with the sunken groove 7 when sliding. The inner wall of the sunken groove 7 is covered with a high-damping composite material, such as high-strength rubber and polyurethane-metal braid layer, with a thickness of 3-5 mm, which can absorb vibration energy through viscoelastic damping effect. The circular arc excessive surface 8 is used to push the battery box 3 into the sunken groove 7. The circular arc excessive surface 8 at the front of the sunken groove 7 can fit the pulley 6 to enter the sunken groove 7. If a right angle is used, the stress area is small and easy to be damaged by collision. The arc-shaped dispersion collision force is adopted to facilitate the pushing and improve the durability.

[0030] In some embodiments, the protrusions 9 arranged on both sides of the sinking groove 7 can solve the problem of preventing the edge of the sinking groove 7 from falling off the power battery suspension rail 4, and the small protrusions 9 arranged on both sides of the sinking groove 7 can limit the pulley 6 above the rail when the pulley 6 is pushed into the battery box 3, so that the battery box 3 can be directly pushed in, which is convenient and fast.

[0031] In some embodiments, the device further comprises an anti-vibration device 10 arranged at the connection between the power battery suspension rail 4 and the support 2, the center hole of the anti-vibration device 10 is a threaded hole, the bottom is adhered with natural rubber and anti-skid beads, and the top cover is cup-shaped. The center hole of the anti-vibration device 10 is a threaded hole, and the installation base is a rhombus with 2 holes or a square with 4 holes. The cup-shaped top cover can protect the rubber body and distribute the load, and the anti-vibration device 10 can distribute the load. The anti-vibration device 10 can withstand radial stiffness which is 2-3 times of axial stiffness, and the rubber simultaneously withstands compression and shear force.

[0032] In some embodiments, the rectangular groove 5 is provided with a bolt hole 11 above it, a fixing bolt can be twisted into the bolt hole 11, and the bolt hole 11 is a limiting design for preventing strong vibration. A bolt hole 11 is designed on the rail above the rectangular groove 5, and a fixing bolt can be twisted into the bolt hole 11. The bolt hole 11 is used when the road condition is too bumpy or the self-weight of the battery box 3 is insufficient to fix the body. The stability of the battery box 3 on the support 2 can be greatly increased, and internal battery damage caused by shaking and jumping can be prevented.

[0033] In some embodiments, one end of the support 2 is connected with the vehicle body load platform 1, and the other end is connected with the power battery suspension rail 4. The support 2 can adjust the distance between the two horizontal power battery suspension rails 4, and can be applicable to different sizes of battery boxes 3.

[0034] In some embodiments, when the pulley 6 slides into the sinking groove 7, the center point of the pulley 6 is at the same level as the surface of the power battery suspension rail 4. After the pulley 6 enters the sinking groove 7, the semicircle of the pulley 6 is just sunk in the sinking groove 7, at this time, the inclined side wall forms a 45° angle with the pulley 6, and the contact area is increased by gravity dispersion.

[0035] In some embodiments, the surface of the pulley 6 is wrapped with rubber, and the rubber increases the friction between the surface of the pulley 6 and the power battery suspension rail 4.

[0036] Obviously, the above embodiments of the utility model are only examples for clearly illustrating the technical scheme of the utility model, and are not a limitation on the specific embodiments of the utility model. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model claim shall be included in the protection scope of the utility model claim.

Claims

1. A heavy-duty vehicle power battery suspension device, comprising a vehicle body load platform, a support, and a battery box, characterized in that, The device comprises: A power battery suspension rail is connected with a vehicle body load platform through a support, and is provided with two parallel and symmetrical power battery suspension rails distributed below the vehicle body load platform, and opposite sides of the two power battery suspension rails are rectangular grooves for supporting the battery box. A plurality of pulleys are arranged at both ends of the battery box, and the pulleys are in contact with the bottom of the rectangular grooves and push or pull the battery box into or out of the power battery suspension rail. A sinking groove is arranged on the power battery suspension rail and is semicircular, and the number and adjacent distance of the sinking grooves on the power battery suspension rail are consistent with the pulleys of the battery box.

2. The heavy-duty vehicle power battery suspension device according to claim 1, characterized in that, The device further comprises an excess surface arranged at the entrance and exit of the sinking groove limit, and the excess surface is a circular arc.

3. The heavy-duty vehicle power battery suspension device according to claim 1, characterized in that, Protrusions are arranged on both sides of the sinking groove.

4. The heavy-duty vehicle power battery suspension device according to claim 1, characterized in that, The device further comprises a vibration damper arranged at the connection between the power battery suspension rail and the support, and the center hole of the vibration damper is a threaded hole, the bottom is bonded with natural rubber and anti-skid beads, and the top cover is cup-shaped.

5. The heavy-duty vehicle power battery suspension device according to claim 1, characterized in that, A bolt hole is arranged above the rectangular groove, and a fixed bolt can be twisted into the bolt hole.

6. The heavy-duty vehicle power battery suspension device according to claim 1, characterized in that, One end of the support is connected with the vehicle body load platform, and the other end is connected with the power battery suspension rail, and the support can adjust the distance between the two parallel power battery suspension rails.

7. The heavy-duty vehicle power battery suspension device according to claim 1, characterized in that, When the pulley slides into the sinking groove, the center point of the pulley is at the same level as the surface of the power battery suspension rail.

8. The heavy-duty vehicle power battery suspension device according to claim 1, characterized in that, The surface of the pulley is wrapped with rubber.

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