A walking trolley of a Mobius ring track and a walking demonstration device

Abstract

The utility model relates to scientific demonstration technical field, concretely is a kind of walking trolley and walking demonstration device of mobius annular track.The utility model includes trolley main body, the chassis of trolley main body includes the front bottom plate, middle bottom plate and rear bottom plate arranged in sequence, three are connected in proper order through universal hinge part, and universal hinge part is located in the middle between adjacent two, and there are tensioning member on the both sides of universal hinge part;The both sides of front bottom plate and the both sides of rear bottom plate are evenly installed with the walking part of rolling fit with track main body, and walking part is elastically supported or elastically clamped on track main body.The utility model not only can realize that trolley is stably driven on the track of big camber, still have good derailing prevention effect.

Description

Technical Field

[0001] This utility model relates to the field of scientific demonstration technology, specifically a walking trolley and walking demonstration device on a Möbius strip. Background Technology

[0002] Demonstration devices for Möbius strips are commonly found in science and technology museums or scientific experimental sites. Most existing demonstration devices for Möbius strips, as described in the text entitled "Möbius Strip Demonstrator" in Chinese Patent Publication No. CN202473020U, are equipped with an anti-detachment track that forms the structure of the Möbius strip, and a remote-controlled trolley is placed on the anti-detachment track. The wheels of the remote-controlled trolley are straddling both sides of the anti-detachment track to achieve a direct display of the Möbius strip.

[0003] In practice, due to the winding nature of the Möbius strip track, complex curvature variations, including horizontal, vertical, and even torsional changes, are extremely common. This often results in the remote-controlled car frequently engaging in curved turns, inclines, and twists while moving on the track. Because of the car's rigid body, it frequently gets stuck on tracks with these complex curvature variations. Existing technology uses gaps between the wheels (which span the anti-derailment track) and the track itself to prevent this jamming and ensure stable movement. However, in practice, these gaps can cause the car to derail and fly off the track when the car's speed is too high, or when there are uneven curves or widths due to track manufacturing processes. Therefore, a solution is urgently needed. Utility Model Content

[0004] In order to avoid and overcome the technical problems existing in the prior art, this utility model provides a trolley and a walking demonstration device for a Möbius ring track, which can not only make the trolley travel stably on a track with large curvature, but also has a good anti-derailment effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A trolley for a Möbius strip track includes a trolley body. The chassis of the trolley body includes a front base plate, a middle base plate, and a rear base plate arranged in sequence. The three are connected in sequence by a universal joint, which is located in the middle between adjacent plates. Tensioners are arranged on both sides of the universal joint. Traveling parts that roll with the track body are installed on both sides of the front base plate and both sides of the rear base plate. The traveling parts are elastically internally supported or elastically clamped to the track body.

[0007] As a further embodiment of this utility model: the universal joint includes a radial joint bearing, the bearing seat of the radial joint bearing is fixed to the middle of the base plate, and a central shaft is fixed on both the front base plate and the rear base plate by a pressure plate. The central shaft is inserted into and locked to the inner spherical surface of the radial joint bearing.

[0008] As a further improvement of this utility model: the tensioning component is a tension spring, and four tension springs are provided at each universal joint. Two tension springs are arranged on the upper plate of the chassis and symmetrically distributed on both sides of the universal joint, and the other two tension springs are arranged on the lower plate of the chassis and symmetrically distributed on both sides of the universal joint.

[0009] As a further embodiment of this utility model: the walking unit includes a first swing arm that is hinged to the front base plate and the rear base plate respectively via a swing shaft, and a floating gap is provided at the passage of the swing shaft to the front base plate and the rear base plate. The cantilever end of the first swing arm is rotatably fitted with a walking wheel. The rotation axis of the walking wheel and the swing axis of the first swing arm are both perpendicular to the surface of the chassis. The first swing arm is driven by a first torsion spring to expand outward or converge inward, so that the walking wheel is elastically supported or elastically clamped on the track body.

[0010] As a further improvement of this utility model, each of the first swing arms is equipped with a power motor that drives the walking wheels to rotate.

[0011] As a further improvement of this utility model, a motor drive board is installed on the bottom plate.

[0012] As a further improvement of this utility model, the main body of the vehicle also includes a shell that constitutes the outer shell of the frame, and the shell is fixed to the bottom plate.

[0013] The walking demonstration device uses a Möbius ring track walking trolley. The track body has two sets of conductive track rods spaced apart by an insulating base. The two sets of conductive track rods are respectively connected to the positive and negative terminals of the power supply. A power-taking component is installed on the bottom plate, which elastically abuts against the two sets of conductive track rods, so that the power supply and the walking part are continuously electrically connected during the movement of the trolley body on the track body.

[0014] As a further embodiment of this utility model: the power-gathering component includes two second swing arms that are respectively hinged to both sides of the middle base plate via a hinge shaft, and an movable gap is provided at the penetration point between the hinge shaft and the middle base plate. The cantilever end of the second swing arm is fixedly installed with a conductive shaft that is electrically connected to the walking part through an insulating sleeve. A conductive wheel is rotatably fitted on the outer circumference of the conductive shaft. The second swing arm is driven by a second torsion spring, which causes the conductive wheel to elastically abut against the conductive track rod. The hinge shaft of the second swing arm and the axis of the conductive shaft are both perpendicular to the plate surface of the chassis.

[0015] As a further improvement of this utility model: the walking part is rolled on the conductive track rod, and an insulating layer is arranged at the mating point between the walking part and the conductive track rod.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. Using a perspective perpendicular to the chassis plate surface as the explanatory viewpoint, the universal joint connection allows both the front and rear chassis plates to perform a combination of left-right swinging, up-down swinging, and torsional movements relative to the middle chassis plate. When the running gear travels on the left-right curved track body, the running gear relies on its own elastic clamping or elastic internal support to the track body, allowing the running gear itself to expand or contract elastically to adapt to the curvature of the track body. Meanwhile, since both the front and rear base plates are connected to the middle base plate through universal joints, when the trolley body passes through the track body that bends left and right, up and down, or even twists like a braid, the front and rear base plates can adapt to the left and right bending, up and down bending, or even twisting bending of the track body and produce corresponding swinging or twisting movements. The base plates swing or twist and deform adaptively with the bending or twisting direction of the track body, abandoning the traditional floating method that relies on the reserved gap between the traveling part and the track body. Under the premise of not jamming between the traveling part and the track body, the fit between the two is better, effectively preventing the traveling part from derailing when crossing curves.

[0018] 2. The chassis is equipped with tension springs on both the upper and lower plates to help maintain the chassis in a horizontal position under normal conditions and to enable the chassis to quickly return to its original position after bending up or down. At the same time, the tension springs on the upper and lower plates are symmetrically arranged on both sides of the universal joint to maintain the stability of the front and rear plates under normal conditions and to enable the chassis to return to its original position after swinging and twisting. This ensures the stability of the chassis in the combined motion of swinging up and down, swinging left and right, and twisting.

[0019] 3. A floating gap is provided at the penetration point between the swing shaft and the front and rear base plates, allowing the first swing arm to swing up and down simultaneously with left and right swinging. This allows the up-and-down swing of the first swing arm to assist the torsional motion of the universal joint when the track twists. The up-and-down and left-and-right swing of the first swing arm provides auxiliary swing for the combined motion of the universal joint, further ensuring the smoothness of the travel wheels during position adjustment as the track body deforms.

[0020] 4. Each first swing arm is equipped with a power motor that drives the walking wheels to rotate, so that the front and rear wheels of the trolley body are driven simultaneously, which is powerful, simple in structure and reliable.

[0021] 5. The main body of the track is equipped with two sets of conductive track rods that are respectively connected to the positive and negative terminals of the power supply; the bottom plate is equipped with a power-collecting component that elastically abuts against the two sets of conductive track rods, so that the main body of the car can form a continuous electrical connection between the power supply and the traveling part during the movement of the main body of the track. Compared with integrating the power supply on the main body of the car, this not only makes the main body of the car have a longer range, but also makes the structure of the main body of the car lighter.

[0022] 6. By using a conductive shaft for fixing and a conductive wheel that rotates and engages on the conductive shaft, the contact between the rolling conductive wheel and the conductive track rod reduces the frictional resistance during the movement of the power-collecting component. The non-rotating conductive shaft is electrically connected to the traveling part, effectively preventing the connecting wires between the power-collecting component and the traveling part from getting tangled. Furthermore, the use of a second torsion spring to drive the swing of the second swing arm ensures a stable electrical connection between the conductive wheel and the conductive track rod.

[0023] In addition, the arrangement of the movable gap at the penetration point between the hinge shaft and the middle base plate allows the second swing arm to swing up and down while swinging left and right. Thus, when the track twists, the up and down swing of the second swing arm can adapt to the torsional deformation of the track body, ensuring stable contact and power extraction between the conductive wheel and the conductive track rod.

[0024] 7. The walking unit and the power-collecting component share a conductive rail rod as the running track, so that there is no need to arrange a separate track for the walking unit to roll on the main track body, which reduces the processing difficulty of the main track body. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model.

[0026] Figure 2 This is a three-dimensional, upward-view structural diagram of the main body of the vehicle in this utility model.

[0027] Figure 3 This is a structural schematic diagram showing the internal cross-section of the main body of the vehicle in this utility model.

[0028] Figure 4 This is a cross-sectional structural schematic diagram of the power take-up wheel in this utility model.

[0029] In the diagram: 10. Track body; 11. Conductive track rod; 12. Insulating base; 20. Car body; 21. Front base plate; 22. Middle base plate; 23. Rear base plate; 24. Traveling wheel; 241. First torsion spring; 242. First swing arm; 243. Power motor; 25. Tension spring; 26. Power supply assembly; 261. Second torsion spring; 262. Second swing arm; 263. Conductive shaft; 264. Insulating sleeve; 265. Conductive wheel; 27. Universal hinge; 271. Pressure plate; 272. Radial spherical bearing; 273. Central shaft; 28. Housing; 29. ​​Motor drive plate. Detailed Implementation

[0030] 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.

[0031] For ease of understanding, the specific structure and working method of this utility model are further described below with reference to the accompanying drawings:

[0032] A type of trolley that travels on a Möbius strip, such as Figure 1-4 As shown, its main structure includes a trolley body 20 that can travel on the track body 10. The chassis of the trolley body 20 includes a front base plate 21, a middle base plate 22, and a rear base plate 23 arranged in sequence. The three are connected in sequence by a universal joint 27, which is located in the middle between adjacent plates. Tensioners are arranged on both sides of the universal joint 27 to provide tension and maintain the stability of the front base plate 21 and the rear base plate 23 under normal conditions and to restore them after swinging. In addition, a traveling part that rolls with the track body 10 is installed on both sides of the front base plate 21 and both sides of the rear base plate 23. The traveling part is elastically supported or elastically clamped onto the track body 10. From a perspective perpendicular to the chassis plate surface, the connection of the universal joint 27 allows the front base plate 21 and the rear base plate 23 to produce a combination of left-right swinging motion, up-down swinging motion, and torsional motion around the length of the chassis relative to the middle base plate 22. When the traveling unit moves on the left-right curved track body 10, it can adapt to the bending changes of the track body 10 by elastically clamping or internally supporting itself on the track body 10. Simultaneously, since the front base plate 21 and rear base plate 23 are connected to the middle base plate 22 via universal joints 27, when the trolley body 20 passes through the left-right, up-down, or even twisted track body 10, the front base plate 21 and rear base plate 23 can adapt to the left-right, up-down, or even twisting motions of the track body 10, producing corresponding swinging or twisting movements. This adaptive swinging or twisting deformation of the base plate with the bending or twisting direction of the track body 10 eliminates the traditional floating method relying on the pre-reserved gap between the traveling unit and the track body 10. This ensures better fit between the traveling unit and the track body 10 without jamming, effectively preventing the traveling unit from derailing when crossing curves.

[0033] Specifically, such as Figure 3As shown, the universal joint 27 includes a radial spherical bearing 272. The bearing seat of the radial spherical bearing 272 is fixed to the middle of the base plate 22. A central shaft 273 is fixed to both the front base plate 21 and the rear base plate 23 via pressure plates 271. This central shaft 273 is inserted into and locked to the inner spherical surface of the radial spherical bearing 272. Specifically, the locking can be achieved by welding or bolting to fix the central shaft 273 to the inner spherical surface of the radial spherical bearing 272. The universal joint 27 is constructed by inserting the central shaft 273 into the inner spherical surface of the radial spherical bearing 272. The bearing seat of the radial spherical bearing 272 can limit the rotation angle of the central shaft 273, thereby enabling the positioning of the left-right swing, up-down swing, and torsional angle of the front base plate 21 and the rear base plate 23. This effectively prevents the reduction in the service life of the tensioning components caused by excessive swinging or torsion of the front base plate 21 and the rear base plate 23. Of course, in actual implementation, the universal joint 27 can also be in the form of a universal ball joint or a cross shaft universal coupling.

[0034] Based on the above, such as Figure 3 As shown, the tensioning element is a tension spring 25. Four tension springs 25 are provided at each universal joint 27. Two tension springs 25 are arranged on the upper plate of the chassis and symmetrically distributed on both sides of the universal joint 27, while the other two tension springs 25 are arranged on the lower plate of the chassis and symmetrically distributed on both sides of the universal joint 27. The arrangement of tension springs 25 on both the upper and lower plates of the chassis helps the chassis maintain a horizontal arrangement under normal conditions and allows for rapid recovery after bending. Simultaneously, the symmetrical arrangement of the tension springs 25 on both sides of the universal joint 27 maintains the stability of the front base plate 21 and the rear base plate 23 under normal conditions and ensures their recovery after swinging and torsion, thus ensuring the stability of the chassis during combined vertical, horizontal, and torsional movements.

[0035] Based on the above, such as Figure 2As shown, the traveling unit includes a first swing arm 242 that is hinged to the front base plate 21 and the rear base plate 23 via a swing shaft. A floating gap is provided at the point where the swing shaft passes through the front base plate 21 and the rear base plate 23. Each cantilever end of the first swing arm 242 is rotatably fitted with a traveling wheel 24. The rotation axis of the traveling wheel 24 and the swing axis of the first swing arm 242 are both perpendicular to the surface of the chassis. The first swing arm 242 is driven by a first torsion spring 241 to extend outward or converge inward, so that the traveling wheel 24 is elastically supported or elastically clamped onto the track body 10. The swing arm-type clamping or supporting structure of the first swing arm 242 makes it difficult to form a transmission dead point, ensuring that the traveling wheel 24 can achieve stable supporting or clamping actions. Furthermore, a floating gap is provided at the penetration point between the swing shaft and the front base plate 21 and the rear base plate 23, allowing the first swing arm 242 to swing up and down simultaneously with left and right swinging. This allows the up-and-down swing of the first swing arm 242 to assist the torsional motion of the universal joint 27 when the track twists. The up-and-down and left-and-right swinging of the first swing arm 242 provides auxiliary swinging for the combined action of the universal joint 27, further ensuring the smoothness of the travel wheel 24 during position adjustment as the track body 10 deforms.

[0036] Of course, in actual implementation, the traveling wheel 24 can also be connected by a telescopic rod, and a spring can be fitted on the telescopic rod so that the traveling wheel 24 can float elastically.

[0037] In addition, such as Figure 2 As shown, each first swing arm 242 is equipped with a power motor 243 that drives the walking wheel 24 to rotate, so that the front and rear wheels of the trolley body 20 are driven simultaneously, which is powerful, simple in structure and reliable.

[0038] Furthermore, since the relative torsion of the middle base plate 22 relative to the front base plate 21 and the rear base plate 23 is smaller than the relative torsion between the front base plate 21 and the rear base plate 23, the motor drive plate 29 that controls the drive of the walking wheels 24 is mounted on the middle base plate 22.

[0039] In addition, the main body 20 of the vehicle also includes a shell 28 that forms the outer shell of the frame. The shell 28 improves the aesthetics of the main body 20 of the vehicle and can provide collision protection for the various structures inside the main body 20 of the vehicle. Furthermore, the shell 28 is fixed on the middle base plate 22, which can ensure that the shell 28 covers the various structures on the main body 20 of the vehicle as much as possible when the main body 20 of the vehicle turns on the track body 10.

[0040] The walking demonstration device uses a walking trolley based on the aforementioned Möbius strip track, such as... Figure 1-4As shown, its main structure includes two sets of conductive rail rods 11 spaced apart on the track body 10 via insulating bases 12, and the two sets of conductive rail rods 11 are respectively connected to the positive and negative terminals of the power supply; a power-collecting component 26 is installed on the middle base plate 22, which elastically abuts against the two sets of conductive rail rods 11, so that the trolley body 20 forms a continuous electrical connection between the power supply and the traveling part during the movement of the trolley body 20 on the track body 10. Compared with integrating the power supply on the trolley body 20, this not only makes the trolley body 20 have a stronger endurance, but also makes the structure of the trolley body 20 lighter.

[0041] Furthermore, the power-collecting component 26 includes two second swing arms 262 that are respectively hinged to both sides of the middle base plate 22 via hinge shafts, and an movable gap is provided at the penetration point between the hinge shaft and the middle base plate 22. The cantilever end of the second swing arm 262 is fixedly installed with a conductive shaft 263 that is electrically connected to the walking part via an insulating sleeve 264. A conductive wheel 265 is rotatably fitted on the outer circumference of the conductive shaft 263. The second swing arm 262 is driven by a second torsion spring 261, which causes the conductive wheel 265 to elastically abut against the conductive track rod 11. The hinge shaft of the second swing arm 262 and the axis of the conductive shaft 263 are both perpendicular to the surface of the chassis. By using a conductive shaft 263 for fixing and a conductive wheel 265 rotating on the conductive shaft 263, the contact between the rolling conductive wheel 265 and the conductive track rod 11 reduces the frictional resistance during the movement of the power-collecting component 26. The non-rotating conductive shaft 263 is electrically connected to the traveling part, effectively preventing the connecting wires between the power-collecting component 26 and the traveling part from tangling. Furthermore, the second torsion spring 261 drives the second swing arm 262 to swing, ensuring a stable electrical connection between the conductive wheel 265 and the conductive track rod 11. In addition, the arrangement of the movable gap at the penetration point between the hinge shaft and the middle base plate 22 allows the second swing arm 262 to swing up and down simultaneously, enabling it to adapt to the torsional deformation of the track body 10 when the track twists, ensuring stable contact and power collection between the conductive wheel 265 and the conductive track rod 11.

[0042] like Figure 1 As shown, the walking part rolls onto the conductive track rod 11, and an insulating layer is arranged at the mating point between the walking part and the conductive track rod 11. The walking part and the power taking component 26 share the conductive track rod 11 as the running track, so that there is no need to arrange a separate track for the walking part to roll on the track body 10, which reduces the processing difficulty of the track body 10.

[0043] Of course, those skilled in the art will recognize that this invention is not limited to the details of the exemplary embodiments described above, but also includes the same or similar structures that can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0044] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0045] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. A trolley that travels on a Möbius strip, characterized in that, The chassis of the trolley body (20) includes a front base plate (21), a middle base plate (22) and a rear base plate (23) arranged in sequence. The three are connected in sequence by a universal joint (27), and the universal joint (27) is located in the middle between the two adjacent parts. Tensioners are arranged on both sides of the universal joint (27). The two sides of the front base plate (21) and the two sides of the rear base plate (23) are equipped with a traveling part that rolls with the track body (10). The traveling part is elastically supported or elastically clamped on the track body (10).

2. The trolley traveling on a Möbius strip as described in claim 1, characterized in that, The universal joint (27) includes a radial spherical bearing (272), the bearing seat of which is fixed to the middle of the base plate (22). A central shaft (273) is fixed on both the front base plate (21) and the rear base plate (23) by a pressure plate (271). The central shaft (273) is inserted into and locked to the inner spherical surface of the radial spherical bearing (272).

3. The trolley traveling on a Möbius strip as described in claim 1, characterized in that, The tensioning element is a tension spring (25). There are four tension springs (25) at each universal joint (27). Two tension springs (25) are arranged on the upper plate of the chassis and symmetrically distributed on both sides of the universal joint (27). The other two tension springs (25) are arranged on the lower plate of the chassis and symmetrically distributed on both sides of the universal joint (27).

4. The trolley traveling on a Möbius strip as described in claim 1, characterized in that, The traveling unit includes a first swing arm (242) that is hinged to the front base plate (21) and the rear base plate (23) respectively via a swing shaft. A floating gap is provided at the passage of the swing shaft to the front base plate (21) and the rear base plate (23). The cantilever end of the first swing arm (242) is rotatably fitted with a traveling wheel (24). The rotation axis of the traveling wheel (24) and the swing axis of the first swing arm (242) are both perpendicular to the plate surface of the chassis. The first swing arm (242) is driven to expand outward or converge inward by a first torsion spring (241) so that the traveling wheel (24) is elastically supported or elastically clamped on the track body (10).

5. The trolley traveling on a Möbius strip according to claim 4, characterized in that, Each of the first swing arms (242) is equipped with a power motor (243) that drives the walking wheel (24) to rotate.

6. The trolley traveling on a Möbius strip according to claim 5, characterized in that, A motor drive plate (29) is mounted on the bottom plate (22).

7. The trolley traveling on a Möbius strip as described in claim 1, characterized in that, The main body (20) of the vehicle also includes a shell (28) that forms the outer shell of the frame, and the shell (28) is fixed on the middle base plate (22).

8. A walking demonstration device, wherein the walking demonstration device uses a walking trolley on a Möbius circular track as described in any one of claims 1-7, characterized in that, Two sets of conductive rail rods (11) are distributed at intervals on the track body (10) through an insulating base (12), and the two sets of conductive rail rods (11) are respectively connected to the positive and negative terminals of the power supply. A power-taking component (26) that elastically abuts against the two sets of conductive rail rods (11) is installed on the middle base plate (22) so that the power supply and the walking part are continuously electrically connected during the movement of the trolley body (20) on the track body (10).

9. The walking demonstration device according to claim 8, characterized in that, The power-collecting component (26) includes two second swing arms (262) that are respectively hinged to both sides of the middle base plate (22) via hinge shafts, and an movable gap is provided at the penetration point between the hinge shaft and the middle base plate (22). The cantilever end of the second swing arm (262) is fixedly installed with a conductive shaft (263) that is electrically connected to the walking part through an insulating sleeve (264). A conductive wheel (265) is rotatably fitted on the outer circumference of the conductive shaft (263). The second swing arm (262) is driven by a second torsion spring (261) and causes the conductive wheel (265) to elastically abut against the conductive track rod (11). The hinge shaft of the second swing arm (262) and the axis of the conductive shaft (263) are both perpendicular to the plate surface of the chassis.

10. The walking demonstration device according to claim 8, characterized in that, The traveling part is rolled on the conductive track rod (11), and an insulating layer is arranged at the mating point between the traveling part and the conductive track rod (11).

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