A mobile robot chassis

Abstract

The utility model discloses a kind of mobile robot chassis, including chassis bottom plate, power supply bin and battery box;Chassis adopts three-wheel structure, including universal wheel assembly and drive wheel assembly;Power supply bin is fixed above chassis bottom plate, for accommodating battery box, battery box can slide in power supply bin along slide strip, and be fixed by bolt or bolt with chassis bottom plate reserved hole, battery box is detachably connected on chassis bottom plate by battery box fixing foot and battery box fixing hole, battery box also includes box, lid, battery pack, insulating fire -retardant adhesive tape, explosion-proof cable sheath, spring handle and wiring port.The utility model passes through modularization power supply bin and quick-change fixing mechanism, solve the inconvenient problem of the operation of the maintenance or replacement power module of existing mobile robot, realize the quick disassembly and stable fixing of power supply, improve maintenance efficiency and use safety.

Description

Technical Field

[0001] This specification relates to the field of mobile robot technology, and in particular to a mobile robot chassis with a power supply quick-change mechanism. Background Technology

[0002] With the popularization of mobile robot technology, its application in industrial, commercial and service fields is becoming increasingly widespread. The stable and reliable operation of mobile robots is the foundation for their effectiveness, and the power system, as the core component of the robot, directly affects the robot's uptime and total life cycle cost due to its maintainability.

[0003] Currently, mobile robots commonly use rechargeable battery packs as their power source. However, battery packs are consumables with a limited charge-discharge cycle life. As usage time increases, their performance gradually degrades and ages, eventually requiring replacement. Furthermore, the power module itself may also require inspection or maintenance due to malfunction.

[0004] In many existing mobile robot designs, the power module is typically integrated into the chassis for a compact structure. However, replacing or repairing the battery often involves a cumbersome process. Maintenance personnel may need to disassemble the robot's outer shell, upper structure, or other components to access the battery compartment. This process is not only time-consuming, leading to prolonged downtime, but also requires specialized tools and technicians, significantly increasing the difficulty and cost of maintenance. Furthermore, the complex disassembly and assembly process increases the risk of misoperation or damage to surrounding cables.

[0005] The existing chassis structure does not allow for easy battery removal, causing maintenance difficulties and affecting the working efficiency of mobile robots. Traditional battery replacement and maintenance methods often require multiple manual operations, which is inefficient and results in a significant waste of human and material resources.

[0006] Therefore, simplifying the battery module replacement and maintenance process and reducing downtime caused by power system maintenance has become an important issue in improving the ease of use and economy of mobile robots. The market urgently needs a simple and easy-to-operate quick-change power supply mechanism that allows maintenance personnel to quickly and safely replace batteries, thereby solving the aforementioned inconveniences in existing technologies. Summary of the Invention

[0007] The purpose of this specification is to provide a mobile robot chassis device that facilitates quick and easy battery replacement. By placing the battery assembly on the upper surface of the chassis structure, the battery assembly of the mobile robot can be easily replaced by pulling it out, thereby improving work efficiency.

[0008] This specification provides a mobile robot chassis, including a base plate, a power supply compartment, and a battery box. The base plate has a folded surface at the front, which contacts the front surface of the power supply compartment. The compartment space formed by the power supply compartment and the folded surface is used to place the battery box. The base plate includes a wheel assembly, which includes omnidirectional wheels and drive wheels. The omnidirectional wheels are located at the center of the rear end of the base plate, and the drive wheels include two drive wheels, which are symmetrically arranged on the left and right sides of the front end of the base plate to ensure the overall balance of the mobile robot. The power compartment is located on the upper surface of the base plate, and the battery box is placed inside the power compartment. The power compartment has openings at both the front and rear ends. During the replacement and installation of the battery box, the power compartment can also guide the movement of the battery box and prevent the battery box from pulling on the surrounding cables during the movement, thus avoiding inconvenience to the battery replacement work. The battery box is provided with battery box fixing feet, and the battery pack is disposed inside the box; the bottom plate is provided with battery box fixing holes, and the battery box fixing feet are detachably connected to the bottom plate through the battery box fixing holes, so that the battery box is fixed on the chassis.

[0009] Preferably, the battery box includes a box body, a box cover, a battery pack, and a wiring port. A connector is provided at the fixing hole of the battery box. The connector is a pin or a bolt. After the battery box is replaced, the battery box is fixed in the position of the fixing hole of the battery box by bolts or pins to prevent the battery box from shaking when the mobile robot is working.

[0010] Preferably, a flange is provided at the rear end of the power compartment where it meets the base plate. The power compartment is connected to the base plate through the flange. The power compartment has flanges on both the outer and inner sides of its bottom surface to facilitate fixing the power compartment to the chassis base plate.

[0011] Preferably, the power compartment is provided with a sliding guide strip, which is disposed on the flange surface along the sliding direction of the battery box. The sliding guide strip can be glued to the upper surface of the inner flange by means of adhesive. The battery box can move back and forth along the sliding guide strip in the power compartment, which facilitates the pulling and replacement of the battery box.

[0012] Preferably, a damping washer is provided on the folded surface of the base plate to prevent the battery box from colliding directly with the chassis base plate and the power compartment during quick replacement, thus preventing mechanical damage.

[0013] Preferably, the battery box includes insulating flame-retardant tape, which is adhered to the inner surface of the box to improve safety during use.

[0014] Preferably, the battery box includes an explosion-proof cable sheath, which is disposed on the outer surface of the rear of the box body, thereby improving safety during use.

[0015] Preferably, the wiring port is located on the outside of the housing, and a power cord is provided on the battery pack. The power cord passes through the explosion-proof cable sheath and connects to the wiring port. The wiring port is freely located on the outside of the housing, which can realize quick plugging and unplugging of the cable. The wiring port can be designed as a DuPont interface.

[0016] Preferably, the housing is provided with spring handles, and there are two spring handles, located on the front and rear surfaces of the housing respectively, to facilitate manual pulling when replacing the battery pack.

[0017] This specification provides a mobile robot chassis device with a quick-change power supply mechanism. The battery assembly is mounted on the chassis. This robot has a simple structure, is easy to operate, reduces maintenance costs, and adopts an optimized structural design to achieve efficient and flexible quick-change power supply, thereby improving the working efficiency of the mobile robot. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of an embodiment of the present utility model; Figure 2 This is a front view structural diagram of an embodiment of the present utility model; Figure 3 This is a schematic diagram of the bottom structure of an embodiment of the present utility model; Figure 4 This is a schematic diagram of the structure after the battery box is removed in an embodiment of this utility model; Figure 5 This is an exploded view of the battery box according to an embodiment of the present invention; The components include: 1. Base plate; 2. Hub motor; 3. Casters; 4. Power supply compartment; 5. Housing; 6. Cover; 7. Spring handle; 8. Explosion-proof cable sheath; 9. Wiring port; 10. Slip belt; 11. Drive wheel mounting base; 12. Hub motor shaft nut; 13. Hub motor control cable; 14. Caster wheel mounting base; 15. Damping washer mounting hole; 16. Battery box mounting hole; 17. Battery box mounting foot; 18. Damping washer; 19. Battery pack; 20. Insulating flame-retardant tape; 21. Cable guide hole. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments in this specification, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0021] Please refer to Figures 1-5. This specification provides an embodiment of the mobile robot chassis.

[0022] A mobile robot chassis includes a base plate 1, a power supply compartment 4, and a battery box. The base plate 1 has a folded surface at its front, which contacts the front surface of the power supply compartment 4. The compartment space formed by the power supply compartment 4 and the folded surface is used to house the battery box. A wheel assembly is mounted on the base plate 1, including casters 3 and drive wheels. The casters 3 are located at the rear center of the base plate 1 and are securely mounted below the base plate 1 via caster mounting brackets 14, ensuring stability and flexibility during movement. The drive wheels include a left drive wheel and a right drive wheel, symmetrically arranged on the left and right sides of the front end of the base plate 1. A hub motor 2 is securely mounted below the base plate 1 via drive wheel mounting brackets 11, providing driving capability and ensuring the overall balance of the mobile robot.

[0023] The power supply compartment 4 is located on the upper surface of the base plate 1. The battery box is placed inside the power supply compartment 4. Openings are provided at both the front and rear ends of the power supply compartment 4. During battery box replacement and installation, the power supply compartment 4 also guides the battery box, preventing it from pulling on surrounding cables during movement. A flange is provided at the rear end of the power supply compartment 4 where it connects to the base plate 1. This flange includes both inward and outward flanges. The rear end of the power supply compartment 4 is fixed to the holes on the base plate 1 using a combination of hex bolts and nuts through the holes on its outward flange. The front end of the power supply compartment 4 is fixed to the front end of the base plate 1 using the same fixing method through the holes on its inward flange, thereby securing the power supply compartment 4 to the base plate 1.

[0024] The power compartment 4 is equipped with a sliding belt, and the lower inner flange of the power compartment 4 is glued with a sliding belt 10 for placing the battery box. The battery box can move along the direction of the sliding belt inside the power compartment 4, which facilitates the replacement operation and ensures that the battery box can be pulled out smoothly.

[0025] The base plate 1 is also designed with damping washer fixing holes 15. The damping washer 18 is fixed to the position of the damping washer fixing holes 15 on the base plate folded surface by internal hex bolts and nuts, so as to prevent the battery box from directly colliding with the base plate 1 and the power compartment 4 during the quick replacement process, thereby causing mechanical damage.

[0026] The battery box includes a box body 5, a box cover 6, a battery pack 19, a wiring port 9, and battery box mounting feet 17. The battery box houses the battery pack 19, which is located inside the box body 5. A battery box mounting hole 16 is provided on the base plate 1. The battery box mounting feet 17 are welded to the rear end of the box body 5. The battery box mounting feet 17 can be detachably connected to the upper surface of the base plate 1 through the threaded engagement of the hexagonal socket head cap screws with the battery box mounting holes 16 at the rear end of the base plate 1, thus fixing the battery box to the chassis 1 and preventing the battery box from shaking when the robot moves. In addition, the battery box mounting holes 16 and the battery box mounting feet 17 can also be fixedly connected by pins or other connection methods.

[0027] The battery box includes insulating and flame-retardant tape 20, which is adhered to the inner surface of the box body 5. The battery box also includes an explosion-proof cable sheath 8, which is located on the outer surface of the rear of the box body 5. A cable outlet hole is designed on the rear side of the box body 5 for installing the explosion-proof cable sheath 8. The explosion-proof cable sheath 8 can be clamped to the box body 5 by its own threads and nuts, preventing it from easily falling off or loosening. The box cover 6 is fixed by flat-head screws engaging with multiple threaded holes on the upper end of the box body 5. A notch is designed on the rear side of the box cover 6 to avoid interference with the explosion-proof cable sheath 8.

[0028] The battery pack 19 is placed inside the housing 5. Its power cable can pass through the explosion-proof cable sheath 8 and connect to the wiring port 9. The wiring port 9 is freely placed outside the battery box for easy and quick plugging and unplugging during battery replacement. The wiring port 9 can be designed as a DuPont connector. A cable routing hole 21 is also provided on the base plate 1.

[0029] The battery box also includes two spring handles 7, located at the front and rear of the box body 5 respectively. The front and rear end faces of the box body 5 are designed with mounting holes for the spring handles 7. The spring handles 7 are mounted on the box body 5 using a combination of hex bolts and nuts, facilitating manual pulling of the battery box.

[0030] In this embodiment, the battery assembly is placed above the base plate of the mobile robot chassis. By optimizing the structure of the battery assembly, the replacement steps are simplified while improving safety performance, greatly improving the convenience of battery replacement, and achieving efficient and flexible power supply quick replacement.

[0031] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on its differences from other embodiments. In this description, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this specification. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples. The accompanying drawings in this application are merely schematic diagrams and do not represent the actual structure of the various components.

[0032] The above description is merely an embodiment of one or more embodiments of this specification and is not intended to limit the scope of this specification. Various modifications and variations can be made to the one or more embodiments of this specification by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims.

Claims

1. A mobile robot chassis, characterized in that, Includes base plate, power supply compartment and battery box, The base plate has a folded surface at the front, and the folded surface contacts the front surface of the power supply compartment. The base plate includes a wheel assembly, which includes a swivel wheel and a drive wheel. The swivel wheel is located at the center of the rear end of the base plate, and the drive wheel includes a left drive wheel and a right drive wheel, which are symmetrically arranged on the left and right sides of the front end of the base plate. The power compartment is disposed on the upper surface of the base plate, and the battery box is placed inside the power compartment. Openings are provided at both the front and rear ends of the power compartment. The battery box contains a battery pack, and the battery box includes battery box mounting feet; The base plate is provided with battery box fixing holes, and the battery box fixing feet are detachably connected to the base plate through the battery box fixing holes.

2. The mobile robot chassis according to claim 1, characterized in that, The battery box includes a box body, a box cover and a wiring port. A connector is provided at the fixing hole of the battery box. The connector is a pin or a bolt.

3. A mobile robot chassis according to claim 2, characterized in that, A flange is provided at the junction of the power supply compartment and the base plate, and the power supply compartment is connected to the base plate through the flange.

4. A mobile robot chassis according to claim 3, characterized in that, The power compartment is equipped with a sliding aid belt, which is located on the upper surface of the flange along the sliding direction of the battery box.

5. A mobile robot chassis according to claim 1, characterized in that, Damping washers are provided on the folded surface of the base plate.

6. A mobile robot chassis according to claim 2, characterized in that, The battery box includes insulating and flame-retardant tape, which is adhered to the inner surface of the box.

7. A mobile robot chassis according to claim 6, characterized in that, The battery box includes an explosion-proof cable sheath, which is disposed on the outer surface of the rear of the box.

8. A mobile robot chassis according to claim 7, characterized in that, The connection port is located on the outside of the enclosure. A power cord is provided on the battery pack, and the power cord passes through the explosion-proof cable sheath and connects to the connection port.

9. A mobile robot chassis according to any one of claims 2-4, characterized in that, The enclosure includes a spring handle, which is fixedly installed on the surface of the enclosure.

10. A mobile robot chassis according to claim 9, characterized in that, There are two spring handles, which are fixedly installed on the front and rear surfaces of the box body, respectively.

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