A combat robot arena and system
By installing chisel and roller devices inside the fighting robot's arena, the problem of limited functionality in existing technologies has been solved, resulting in more diverse competition methods, enhanced entertainment value, and improved strategic depth and fairness.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEILONGJIANG XUANSU TECHNOLOGY CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-06-19
AI Technical Summary
The existing combat robot arena has relatively simple functions, lacks diverse competitive elements, and has a fixed competition format, making it difficult to fully showcase the creativity and strategic planning of the participants.
The combat robot's fighting cabin is equipped with a chisel-throwing device and a roller device. The chisel-throwing device drives the hammer to perform chiseling actions through a first drive mechanism, while the roller device drives the toothed roller to rotate through a second drive mechanism, increasing the diversity and strategy of the competition.
It enriches the combat methods of robot fighting competitions, enhances the viewing experience and strategic depth of the competitions, and adds competitive elements through the synergy of chisel and roller devices, forcing robots to adjust their posture or movement paths, thus increasing the complexity and fairness of the competitions.
Smart Images

Figure CN224374142U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of combat robot technology, and more specifically, to a combat robot arena and system. Background Technology
[0002] With the rapid development of technology, robot combat, as an emerging competitive sport, has received increasing attention. The robot combat arena, as the core venue for competition, is also constantly evolving technologically. Currently, most robot combat arena on the market possess basic protective functions, using a robust cabin structure to prevent flying parts from the robots during intense combat from injuring surrounding personnel and facilities. Additionally, the arena is generally equipped with a flat combat platform to provide a stable operating space for the robots, and some arena also have simple boundary markers to define the competition area.
[0003] However, the combat robot arena technology has significant shortcomings. Its functions are relatively limited, mostly only meeting the basic combat needs of combat robots and lacking diverse competitive elements. During matches, the combat methods of the robots are relatively fixed, mainly limited to direct physical attacks between robots, which restricts the entertainment value and strategic depth of the competition. For example, matches often simply compare the robots' attack power, defense, and movement speed, making it difficult to fully showcase the creativity and strategic planning of the participants. Utility Model Content
[0004] The technical problem to be solved by this utility model is: how to improve the functionality of the fighting robot's arena.
[0005] This utility model provides a fighting robot arena, including a cabin body and a striking device and a roller device disposed in the cabin body. The striking device includes a first drive mechanism and a hammer head. The first drive mechanism is driven to the hammer head and is used to drive the hammer head to perform a striking action. The roller device includes a second drive mechanism and a roller. The second drive mechanism is driven to the roller and is used to drive the roller to rotate. The outer wall of the roller is provided with a toothed structure.
[0006] Optionally, the cabin is a rectangular box structure assembled from plates, and both the chisel device and the roller device are mounted on the bottom plate of the cabin.
[0007] Optionally, the fighting robot arena further includes a wedge-shaped rod connected to the corner of the bottom plate of the arena, with the sloping side of the wedge-shaped rod facing the center of the arena. The wedge-shaped rod is used to isolate the corner of the bottom plate of the arena into an elimination zone.
[0008] Optionally, the two wedge rods are respectively disposed at two opposite corners of the bottom plate of the cabin, the two roller devices are respectively disposed at two other opposite corners of the bottom plate of the cabin, and the two chisel devices are respectively disposed at two opposite sides of the bottom plate of the cabin.
[0009] Optionally, the top plate of the cabin has an entrance / exit, and a door panel is provided at the entrance / exit. The door panel is connected to the top plate of the cabin by a hinge, and a latch for locking the door panel is also provided on the side plate of the cabin.
[0010] Optionally, the side panels of the cabin are transparent panels.
[0011] Optionally, the first drive mechanism includes a servo motor and a linkage assembly, and the striking device further includes a weapon rod. The servo motor is driven to the linkage assembly, and the two ends of the weapon rod are respectively connected to the hammer head and the linkage assembly. The servo motor is used to drive the linkage assembly to make the weapon rod reciprocate.
[0012] Optionally, the second drive mechanism includes a motor and a reducer, the roller device further includes a support, the support is connected to the chamber, the roller is rotatably connected between two supports, the motor is disposed on the support, the motor is drivenly connected to the reducer, and the reducer is drivenly connected to the roller.
[0013] Optionally, the fighting robot combat cabin also includes a support plate and legs, the legs being connected between the bottom of the cabin and the support plate.
[0014] Compared with the prior art, the fighting robot arena provided by this utility model has the following technical effects:
[0015] The combat robot arena provided by this utility model can serve as a closed arena for combat robots to compete. The arena serves as a basic load-bearing structure, providing installation space for the striking device and the roller device while ensuring their protective functions (such as preventing parts from flying). The striking device and roller device are installed within the arena. The first drive mechanism of the striking device drives the hammer to perform a striking action, creating intermittent point impacts on combat robots entering its range, forcing the robots to adjust their posture or movement path. This can serve as a mechanism in combat robot competitions, or as a bonus or penalty point according to the competition rules. The second drive mechanism of the roller device drives the toothed roller to rotate, generating continuous friction, impact, or dragging forces on the contacting combat robots, damaging their locomotion mechanism or changing their direction of movement. The striking device and roller device work together to increase the competitive elements from different dimensions, enriching the combat methods of combat robots, enhancing the viewing experience and strategic depth of the competition, and effectively improving the functionality of the combat robot arena.
[0016] In addition, this utility model also provides a fighting robot competition system, including the aforementioned fighting robot competition cabin and controller, wherein the controller is electrically connected to the striking device and the roller device of the fighting robot competition cabin.
[0017] Compared with the prior art, the fighting robot competition system provided by this utility model has roughly the same technical effect as the fighting robot competition cabin mentioned above, by setting up the fighting robot competition cabin and controller, and the controller is electrically connected to the striking device and roller device of the fighting robot competition cabin respectively. It will not be described in detail here. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of the fighting robot arena, as described in an embodiment of this utility model.
[0019] Figure 2 This is a schematic diagram of the internal structure of the fighting robot's arena, as described in an embodiment of this utility model.
[0020] Figure 3 This is a schematic diagram of the structure of the chisel device according to an embodiment of the present invention;
[0021] Figure 4 This is a schematic diagram of the structure of the roller device in an embodiment of the present invention.
[0022] Explanation of reference numerals in the attached figures:
[0023] 10-Hull, 11-Door panel, 12-Hinge, 13-Latch, 20-Chisel-wielding device, 21-Hammer, 22-Steering gear, 23-Linkage assembly, 24-Weapon rod, 30-Roller device, 31-Roller, 32-Motor, 33-Reducer, 34-Support, 40-Wedge rod, 50-Support plate, 60-Leg. 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] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this utility model described herein can be implemented in sequences other than those illustrated or described herein.
[0026] In the description of this utility model, the orientation or positional relationship indicated by terms such as "up", "down", "left", "right", "top", "bottom", "front", "back", "inner" and "outer" is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this utility model and is not intended to indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the scope of protection of this utility model.
[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0028] In the description of this specification, references to terms such as "embodiment," "one embodiment," and "one implementation" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or illustrative embodiment of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.
[0029] like Figure 1 and Figure 2As shown, this utility model embodiment provides a fighting robot arena, including a cabin body 10 and a striking device 20 and a roller device 30 disposed within the cabin body 10. The striking device 20 includes a first drive mechanism and a hammer head 21. The first drive mechanism is driven to the hammer head 21 and is used to drive the hammer head 21 to perform a striking action. The roller device 30 includes a second drive mechanism and a roller 31. The second drive mechanism is driven to the roller 31 and is used to drive the roller 31 to rotate. The outer wall of the roller 31 is provided with a toothed structure.
[0030] It should be noted that traditional fighting robot arenas generally only provide a relatively enclosed arena for fighting robot competitions, and their primary function is protection, preventing parts from flying during robot combat. Therefore, traditional fighting robot arenas only consider their own robustness. However, with the promotion and diversification of fighting robot competitions, traditional robot arenas can no longer meet the diverse needs of competitions. In this embodiment, by setting a chisel-shaped device 20 and a roller device 30 inside the arena 10, these can serve as mechanisms, obstacles, bonus points, or penalty points in the competition, enriching the diversity of fighting robot competitions, making them more entertaining, and more in demand by the market. For example, if a fighting robot is hit by the hammer 21 of the chisel-shaped device 20 or touched by the toothed structure on the roller 31 of the roller device 30 during the competition, a point will be deducted. This process also tests the fighting robot's ability to withstand the destructive actions of the chisel-shaped device 20 and the roller device 30, its flexibility, and stability, as well as the operator's control and strategic abilities. Of course, the specific function can be reflected according to the user's specific competition rules, and no specific limitations are made here.
[0031] In this embodiment, the fighting robot arena provided can serve as a closed arena for fighting robots to compete. The arena 10 serves as a basic load-bearing structure, providing installation space for the striking device 20 and the roller device 30, while ensuring their protective functions (such as preventing parts from flying). Furthermore, by installing the striking device 20 and the roller device 30 within the arena 10, the first drive mechanism of the striking device 20 can drive the hammer 21 to perform a striking action, creating intermittent point impacts on the fighting robot entering its effective range, forcing the robot to adjust its posture. The movement path can be used as a mechanism in fighting robot competitions, or as a bonus or penalty item according to the competition rules. The second drive mechanism of the roller device 30 can drive the toothed roller 31 to rotate, which can generate continuous friction, impact or drag force on the contacting fighting robot, destroy the walking mechanism of the fighting robot or change its direction of movement. The chisel device 20 and the roller device 30 work together to increase the competitive elements from different dimensions, enrich the combat methods of fighting robots, enhance the viewing and strategic aspects of the competition, and effectively improve the functionality of the fighting robot competition cabin.
[0032] Optionally, such as Figure 1 and Figure 2 As shown, the cabin 10 is a square box structure assembled from plates, and the chisel device 20 and the roller device 30 are both installed on the bottom plate of the cabin 10.
[0033] Specifically, the cabin 10 is composed of six panels, including a top plate and a bottom plate arranged opposite each other, as well as four side plates around the perimeter. Under normal circumstances, the bottom plate is the activity area of the fighting robot, that is, the fighting competition is carried out on the upper surface of the bottom plate.
[0034] In this embodiment, by setting the cabin 10 as a rectangular box structure assembled from plates, preferably a square box structure, the cabin 10 is easy to manufacture, transport and disassemble. At the same time, the rectangular box structure provides the robot with a regular competition space. Furthermore, by setting both the chisel device 20 and the roller device 30 on the bottom plate of the cabin 10, the effective area of the devices can be concentrated on the main working plane of the robot, increasing the probability of contact between the devices and the robot and ensuring that their functions are effectively performed.
[0035] Optionally, such as Figure 2 As shown, the fighting robot arena also includes a wedge-shaped rod 40, which is connected to the corner of the bottom plate of the arena 10, and the sloping side of the wedge-shaped rod 40 faces the middle of the arena 10. The wedge-shaped rod 40 is used to isolate the corner of the bottom plate of the arena 10 into an elimination area.
[0036] Specifically, the wedge rod 40 can be installed on the bottom plate of the cabin 10 by means of screws, for example. The wedge rod 40 is inclined relative to the edge of the bottom plate of the cabin 10, that is, it isolates a triangular area at the corner of the bottom plate as an elimination area. The sloping side of the wedge rod 40, that is, the inclined side relative to the upper surface of the bottom plate, allows the fighting robot to enter the elimination area through the sloping side of the wedge rod 40 when it is attacked to a corner by the opponent in the middle of the cabin 10, that is, the middle area of the bottom plate. It can then be set to be eliminated or have points deducted. More specifically, the sloping side of the wedge rod 40 forms an obtuse angle with the upper surface of the bottom plate, and the opposite side of the wedge rod 40, that is, the side facing the elimination area, forms a right angle or an acute angle with the upper surface of the bottom plate. This makes it difficult for the fighting robot to get out after entering the elimination area, making the competition more diverse.
[0037] In this embodiment, by connecting a wedge-shaped rod 40 to the corner of the bottom plate of the cabin 10, with the sloping side of the wedge-shaped rod 40 facing the middle of the cabin 10, when the fighting robot is engaged in a fighting match in the middle of the cabin 10, that is, the middle area of the bottom plate, if it is attacked to a corner by the opponent, it can enter the elimination area through the sloping side of the wedge-shaped rod 40, which can be set as elimination or point deduction. If the robot cannot escape, it is judged as eliminated. This adds rules such as "area elimination", enriches the competition strategy, clarifies the failure conditions, reduces the subjective judgment of the referee, and improves the fairness and entertainment value of the competition.
[0038] Optionally, such as Figure 2 As shown, the two wedge rods 40 are respectively disposed at two opposite corners of the bottom plate of the cabin 10, the two roller devices 30 are respectively disposed at two other opposite corners of the bottom plate of the cabin 10, and the two chisel devices 20 are respectively disposed at two opposite sides of the bottom plate of the cabin 10.
[0039] It should be noted that the position and number of the chisel device 20, the roller device 30 and the wedge rod 40 can be set according to the user's specific competition rules.
[0040] In this embodiment, by setting two wedge rods 40 at two opposite corners of the bottom plate of the cabin 10, two roller devices 30 at two other opposite corners, and two chisel devices 20 at two opposite sides, the interference elements in the competition cabin are evenly and symmetrically distributed, avoiding the imbalance caused by excessive density of devices on one side. This ensures that the robot faces similar challenges in any area. At the same time, the differentiated division of functional areas requires the robot to develop a response plan based on the characteristics of the devices in different areas during movement, further enhancing the complexity and strategy of the competition.
[0041] Optionally, such as Figure 1 As shown, the top plate of the cabin 10 has an entrance and exit, and a door panel 11 is provided at the entrance and exit. The door panel 11 is connected to the top plate of the cabin 10 by a hinge 12. The side plate of the cabin 10 is also provided with a latch 13 for locking the door panel 11.
[0042] Specifically, the top plate of the cabin 10 has two entrances and exits, and correspondingly, two door panels 11 are provided, allowing two fighting robots to enter simultaneously to ensure the fairness of the competition. Meanwhile, the latch 13 can have a structure similar to a door latch, door lock, or bolt lock, as long as it facilitates the opening and closing of the door 11 and prevents the door from opening autonomously; its specific structure is not specifically limited here.
[0043] In this embodiment, by opening an entrance and exit on the top plate of the cabin 10 and setting a door panel 11, the door panel 11 is connected to the top plate by a hinge 12, which facilitates the insertion and removal of the robot and the internal maintenance of the cabin 10. At the same time, the latching buckle set on the side plate of the cabin 10 can ensure that the door panel 11 is tightly closed during the competition, preventing the robot or parts from splashing out of the cabin 10, thus enhancing the safety of the cabin 10 and avoiding external factors from interfering with the competition.
[0044] Optionally, such as Figure 1 As shown, the side panels of the cabin 10 are transparent panels.
[0045] Specifically, the transparent panel structure can be made of materials such as explosion-proof glass or acrylic, as long as it has a certain degree of sturdiness and transparency; no specific limitations are imposed here. Meanwhile, the top and bottom panels of the cabin 10 can be designed as transparent panel structures according to actual needs.
[0046] In this embodiment, by setting the side panels of the cabin 10 as transparent panels, the audience and referees can clearly observe the combat process of the robots inside the cabin and the details of the interaction between the devices and the robots, which enhances the visual experience of the competition. At the same time, the transparent panels can prevent parts from flying while ensuring visibility, thus balancing safety and viewing experience.
[0047] Optionally, such as Figure 2 and Figure 3 As shown, the first drive mechanism includes a servo motor 22 and a linkage assembly 23. The chiseling device 20 also includes a weapon rod 24. The servo motor 22 is driven to the linkage assembly 23. The two ends of the weapon rod 24 are respectively connected to the hammer head 21 and the linkage assembly 23. The servo motor 22 is used to drive the linkage assembly 23 to drive the weapon rod 24 to reciprocate.
[0048] Specifically, the shape and material of the hammerhead 21 can be set according to actual needs. The linkage assembly 23 includes multiple hinged rods. The output shaft of the servo motor 22 is connected to the linkage assembly 23. Through mutual cooperation and connection with the weapon rod 24, the multiple rods of the linkage assembly 23 can transmit the rotation of the servo motor 22 to the weapon rod 24 for reciprocating swing. The structure is simple and reasonable, and easy to assemble and produce.
[0049] In this embodiment, the chiseling device 20 is configured with a structure in which a servo motor 22, a linkage assembly 23, and a weapon rod 24 work together to drive each other. The servo motor 22 is connected to the linkage assembly 23, and the two ends of the weapon rod 24 are connected to the hammer head 21 and the linkage assembly 23, respectively. This allows the servo motor 22 to drive the linkage assembly 23 to make the weapon rod 24 swing back and forth, making the chiseling action of the hammer head 21 more stable and controllable. The swing amplitude and frequency can be adjusted to adapt to different robots. At the same time, the weapon rod 24 extends the effective radius of the hammer head 21, expands the interference range of the chiseling device 20, and the linkage structure is easier to maintain, reducing the device failure rate.
[0050] Optionally, such as Figure 2 and Figure 4 As shown, the second drive mechanism includes a motor 32 and a reducer 33. The roller device 30 also includes a support 34, which is connected to the cabin 10. The roller 31 is rotatably connected between two supports 34. The motor 32 is disposed on the support 34. The motor 32 is drivenly connected to the reducer 33, and the reducer 33 is drivenly connected to the roller 31.
[0051] Specifically, the support 34 can be installed on the bottom plate of the cabin 10 with screws, the reducer 33 can be set as a reduction gear set, making the power transmission more reliable and controllable, and the toothed structure on the outer wall of the roller 31 can be evenly spaced to increase the attack or interference area.
[0052] In this embodiment, by setting the second drive structure of the roller device 30 as a motor 32 reducer 33 structure, and rotating the roller 31 between two supports 24, the motor 32 can adjust the speed and torque of the roller 31 through the reducer 33, making the roller 31 rotate more smoothly and reliably. This provides sufficient interference force while avoiding overload of the device, thus extending its service life. At the same time, the supports 34 provide stable support for the second drive mechanism and the roller 31, ensuring that the position of the roller 31 is fixed during rotation, thereby improving the reliability of the device.
[0053] Optionally, such as Figure 1 and Figure 2 As shown, the fighting robot arena also includes a support plate 50 and legs 60, with the legs 60 connected between the bottom of the arena 10 and the support plate 50.
[0054] Specifically, the shape of the support plate 50 is adapted to the shape of the bottom plate of the cabin 10, and the four legs 60 are respectively connected between the four corners of the bottom plate of the cabin 10 and the four corners of the support plate 50, making the structure more stable and reliable.
[0055] In this embodiment, by setting a support plate 50 and a support leg 60, with the support leg 60 connected between the bottom of the cabin 10 and the support plate 50, the cabin 10 is raised, avoiding wear or moisture caused by the bottom plate directly contacting the ground. This facilitates wiring, layout of controllers and power supplies under the cabin 10, and cleaning and maintenance, improving the durability and maintenance convenience of the competition cabin. At the same time, the support plate 50 makes the cabin 10 more stable, reducing shaking during the competition and ensuring the stability of the competition environment.
[0056] A combat robot competition system includes a combat robot competition cabin and a controller, wherein the controller is electrically connected to a striking device 20 and a roller device 30 of the combat robot competition cabin.
[0057] In addition, another embodiment of the present invention provides a fighting robot competition system, including the above-mentioned fighting robot competition cabin and controller, wherein the controller is electrically connected to the striking device 20 and the roller device 30 of the fighting robot competition cabin.
[0058] For example, the controller can also communicate with a wireless remote controller, allowing the user to wirelessly control the actions of the chisel device 20 and the roller device 30 according to the actual competition requirements.
[0059] In this embodiment, the fighting robot competition system provided in this embodiment is equipped with the aforementioned fighting robot competition cabin and controller, and the controller is electrically connected to the striking device 20 and the roller device 30 of the fighting robot competition cabin respectively. Its technical effects are roughly the same as those of the aforementioned fighting robot competition cabin, and will not be described in detail here.
[0060] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.
Claims
1. A combat robot arena, characterized in that, The device includes a housing (10) and a chisel device (20) and a roller device (30) disposed within the housing (10). The chisel device (20) includes a first drive mechanism and a hammer (21). The first drive mechanism is driven to the hammer (21) and is used to drive the hammer (21) to perform chiseling actions. The roller device (30) includes a second drive mechanism and a roller (31). The second drive mechanism is driven to the roller (31) and is used to drive the roller (31) to rotate. The outer wall of the roller (31) is provided with a toothed structure.
2. The fighting robot arena according to claim 1, characterized in that, The cabin (10) is a rectangular box structure assembled from plates. The chisel device (20) and the roller device (30) are both installed on the bottom plate of the cabin (10).
3. The fighting robot arena according to claim 2, characterized in that, The fighting robot arena also includes a wedge rod (40), which is connected to the corner of the bottom plate of the cabin (10), and the sloping side of the wedge rod (40) faces the middle of the cabin (10). The wedge rod (40) is used to isolate the corner of the bottom plate of the cabin (10) into an elimination area.
4. The fighting robot arena according to claim 3, characterized in that, Two wedge rods (40) are respectively disposed at two opposite corners of the bottom plate of the cabin (10), two roller devices (30) are respectively disposed at two other opposite corners of the bottom plate of the cabin (10), and two chisel devices (20) are respectively disposed at two opposite sides of the bottom plate of the cabin (10).
5. The fighting robot arena according to claim 2, characterized in that, The top plate of the cabin (10) has an entrance and an exit, and a door panel (11) is provided at the entrance and exit. The door panel (11) is connected to the top plate of the cabin (10) by a hinge (12). The side plate of the cabin (10) is also provided with a latch (13) for locking the door panel (11).
6. The fighting robot arena according to claim 2, characterized in that, The side panels of the cabin (10) are transparent panels.
7. The fighting robot arena according to claim 1, characterized in that, The first drive mechanism includes a servo motor (22) and a linkage assembly (23). The chiseling device (20) also includes a weapon rod (24). The servo motor (22) is driven to the linkage assembly (23). The two ends of the weapon rod (24) are connected to the hammer head (21) and the linkage assembly (23) respectively. The servo motor (22) is used to drive the linkage assembly (23) to drive the weapon rod (24) to reciprocate.
8. The fighting robot arena according to claim 1, characterized in that, The second drive mechanism includes a motor (32) and a reducer (33). The roller device (30) also includes a support (34). The support (34) is connected inside the cabin (10). The roller (31) is rotatably connected between the two supports (34). The motor (32) is disposed on the support (34). The motor (32) is drivenly connected to the reducer (33). The reducer (33) is drivenly connected to the roller (31).
9. The fighting robot arena according to claim 1, characterized in that, The fighting robot arena also includes a support plate (50) and legs (60), the legs (60) being connected between the bottom of the arena (10) and the support plate (50).
10. A fighting robot competition system, characterized in that, Includes the fighting robot arena and controller as described in any one of claims 1-9, wherein the controller is electrically connected to the striking device (20) and the roller device (30) of the fighting robot arena, respectively.