Walking trolley with Mobius strip-shaped track

Abstract

The utility model relates to the technical field of small rail cars, in particular to a walking car with a Mobius strip-shaped rail. The track trolley comprises a trolley body and an elastic steel plate fixed at the bottom of the trolley body, vertical wheels are mounted at four corners of the end of the elastic steel plate, and the vertical wheels are elastically connected with the elastic steel plate, so that the vertical wheels are elastically clamped and matched on a track; the middle of the elastic steel plate is fixedly connected with the vehicle body, a gap used for deformation of the elastic steel plate is formed between the elastic steel plate and the vehicle body, extension springs are connected between the two ends of the elastic steel plate and the vehicle body, and when the elastic steel plate is in a non-deformation plane state, the extension springs are in a non-load-bearing state. According to the anti-derailment trolley, the trolley can stably run on a winding track, and a good anti-derailment effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of track trolleys, in particular to a walking trolley on a Möbius strip-shaped track. Background Art

[0002] Demonstration devices of the Möbius strip are commonly seen in science and technology exhibition halls or scientific experimental sites. Most of the existing demonstration devices for demonstrating the Möbius strip are described in the text of the Chinese patent publication number CN202473020U, which is entitled "Möbius Strip Demonstrator". They are provided with an anti-escape track that forms a Möbius strip structure, and a remote-controlled trolley is arranged on the anti-escape track, wherein the wheels of the remote-controlled trolley are placed on both sides of the anti-escape track to achieve an intuitive display of the Möbius strip.

[0003] In actual implementation, due to the winding characteristics of the anti-slip track of the Möbius strip structure, the remote control car is often accompanied by motions such as curve turning and even flipping when walking on the anti-slip track. And due to the rigid body structure of the remote control car, when walking on the track with large curvature and slope on the Möbius strip, the situation of getting stuck often occurs. In the prior art, in order to prevent the remote control car from getting stuck during the anti-slip track operation, there is often a gap between the wheel and the anti-slip track that are laterally connected across the anti-slip track both sides, so that the remote control car can stabilize the anti-slip track with large curvature and slope. But in actual implementation, when the remote control car running speed is too large, the gap for the remote control car to turn will cause the remote control car to derail and fly out, so it is urgent to solve. Utility Model Content

[0004] In order to avoid and overcome the technical problems existing in the prior art, the utility model provides a walking trolley with a Möbius strip track, which not only enables the trolley to travel stably on a winding track, but also has a good anti-derailment effect.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A walking trolley on a Möbius strip track comprises a vehicle body and an elastic steel plate fixed to the bottom thereof, wherein plumb wheels are mounted at the four corners of the ends of the elastic steel plate, and the plumb wheels are elastically connected to the elastic steel plate so that the plumb wheels are elastically clamped and fitted on the track; the middle portion of the elastic steel plate is fixedly connected to the vehicle body, and a gap is provided between the elastic steel plate and the vehicle body for deformation of the elastic steel plate; tension springs are connected between both ends of the elastic steel plate and the vehicle body, and when the elastic steel plate is in a non-deformed planar state, the tension springs are in a state of not bearing load.

[0007] As a further solution of the present invention: a swing arm is hinged on the elastic steel plate through a vertical hinge seat, the vertical wheel is installed on the cantilever end of the swing arm, and a clamping spring is connected between the swing arm and the elastic steel plate to form an elastic connection between the vertical wheel and the elastic steel plate.

[0008] As a further solution of the present invention: each plumb wheel includes a wheel axle and a friction washer fixed to the outer periphery of the wheel axle body, and smooth retaining rings are fixed to the shaft body at both ends of the friction washer on the plumb wheel, and the friction washer and the smooth retaining rings at both ends thereof form a walking groove that is engaged with the track.

[0009] As a further solution of the present invention: the two ends of the friction washer are respectively embedded in the inner sides of the two smooth retaining rings, and the outer periphery of the friction washer is provided with an annular groove, and the annular groove and the smooth retaining ring together form the running groove.

[0010] As a further solution of the present invention: the cross section of the groove cavity of the walking groove is open-shaped.

[0011] As a further solution of the present invention: the friction washer is a polyurethane washer.

[0012] As a further solution of the present invention: the smooth retaining ring is a smooth metal retaining ring.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. Utilize the elastic clamping fit between the vertical wheel and the track. The elastic stroke in the elastic clamping fit serves as the floating clearance between the vertical wheel and the track on the horizontal plane. This allows the vertical wheel to fit the track on the water surface while also allowing the vertical wheel to turn stably and without getting stuck, effectively reducing the probability of the vertical wheel derailing. The provision of an elastic steel plate utilizes the elastic deformation stroke of the elastic steel plate as the floating clearance between the vertical wheel and the track. A tension spring is provided to control the deformation of the elastic steel plate and assist in resetting the elastic steel plate. While the vertical wheel fits the track on the vertical plane, the vertical wheel can operate stably without getting stuck at the peaks and valleys of the track, further reducing the probability of the vertical wheel derailing.

[0015] 2. A swing arm is hinged to the vehicle body via a vertical articulated seat. The vertical wheel is mounted at the cantilever end of the swing arm. A clamping spring is connected between the swing arm and the vehicle body, creating an elastic connection between the vertical wheel and the vehicle body. The elastic clamping structure of the swing arm ensures smooth resistance when the vertical wheel swings to either side, ensuring stability during vehicle operation.

[0016] 3. In the running groove where the vertical wheel is connected to the track, the groove wall adopts a smooth retaining ring and the groove bottom adopts a friction washer. After the running groove is connected to the track, the friction washer ensures good friction between the vertical wheel and the track during normal driving of the vehicle body, ensuring stable driving without idling and achieving precise control of the vehicle body speed and position. However, when the vehicle body is running on a curve, it is subjected to a large centrifugal derailment force. During this process, the vertical wheel is mainly in contact with the track by the smooth retaining ring. Since the friction between the smooth retaining ring and the track is small, the probability of the vertical wheel derailing is effectively reduced.

[0017] 4. In the running groove structure finally formed by the vertical wheel, the bottom of the running groove and the groove wall adjacent to the bottom of the groove are friction surfaces, while the groove wall away from the bottom of the groove is a smooth surface. When the vertical wheel is in normal driving, the friction surfaces at the bottom of the groove and the groove wall cover the track, ensuring the friction under normal driving and preventing the metal smooth surface from causing wear on the rubber track. In addition, when the vertical wheel is running on a curved surface, when the vehicle body is subjected to a small centrifugal force in the early stage, the friction surface of the groove wall fits with the track, ensuring that a certain friction is maintained between the vertical wheel and the track, allowing the vehicle body to operate stably; and when the vehicle body is subjected to a large centrifugal force in the later stage, the smooth surface of the groove wall fits with the track, preventing the vertical wheel from derailing due to excessive friction. Thus, under the premise that the vertical wheel does not derail, the stability of the vertical wheel during the running on a curved surface is further guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the top view of the elastic steel plate and the plumb wheel in the utility model.

[0019] Figure 2 It is a structural schematic diagram of the vertical wheel in the utility model.

[0020] Figure 3 This is a schematic diagram of the main structure of the vehicle body in the present utility model.

[0021] In the figure: 10, vehicle body; 20, elastic steel plate; 30, swing arm; 40, vertical wheel; 41, axle; 42, friction washer; 43, smooth retaining ring; 50, clamping spring; 60, tension spring; 70, track. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] For ease of understanding, the specific structure and working mode of the present invention are further described below with reference to the accompanying drawings:

[0024] The specific structure of the utility model refers to Figure 1-3 As shown, its main structure includes a vehicle body 10 and an elastic steel plate 20 fixed to its bottom. Plumb wheels 40 are mounted at the four corners of the elastic steel plate 20. The plumb wheels 40 are elastically connected to the elastic steel plate 20 so that the plumb wheels 40 are elastically clamped and fit on the track 70. The elastic travel of the elastic clamping fit serves as a floating gap between the plumb wheels 40 and the track 70 on the horizontal plane, thereby ensuring that the plumb wheels 40 fit closely to the track 70 on the water surface while also achieving stable and smooth curve turns, effectively reducing the probability of the plumb wheels 40 derailing.

[0025] In addition, if Figure 3 As shown, the middle portion of the elastic steel plate 20 is fixedly connected to the vehicle body 10, and a gap is defined between the elastic steel plate 20 and the vehicle body 10 to allow the elastic steel plate 20 to deform. The provision of the elastic steel plate 20 utilizes the elastic deformation stroke of the elastic steel plate 20 as a floating gap between the vertical wheel 40 and the track 70 in the vertical plane. This allows the vertical wheel 40 to be in contact with the track 70 in the vertical plane while ensuring stable operation of the vertical wheel 40 without getting stuck at the peaks and valleys of the track 70, further reducing the probability of the vertical wheel 40 derailing.

[0026] Further, such as Figure 3 As shown, tension springs 60 are connected between both ends of the elastic steel plate 20 and the vehicle body 10, and when the elastic steel plate 20 is in a non-deformed, flat state, the tension springs 60 are in a non-load-bearing state. The tension springs 60 are provided to control the degree of deformation of the elastic steel plate 20 and prevent the elastic steel plate 20 from being difficult to reset due to excessive deformation. In particular, when the vehicle body 10 is inverted on the track 70, causing the vehicle body 10 to exert a large pulling force on the middle part of the elastic steel plate 20, the middle part of the elastic steel plate 20 will be arched and deformed toward the vehicle body 10; at this time, the tension springs 60 generate a pulling force from the vehicle body 10 on both ends of the elastic steel plate 20, which can resist the arching deformation of the middle part of the elastic steel plate 20 toward the vehicle body 10 and assist in resetting the elastic steel plate 20.

[0027] On the basis of the above, if Figure 1As shown, the car body 10 is hinged with a swing arm 30 through a vertical hinge seat, and the vertical wheel 40 is installed at the cantilever end of the swing arm 30. A clamping spring 50 is connected between the swing arm 30 and the car body 10 to form an elastic connection between the vertical wheel 40 and the car body 10. Specifically, the clamping spring 50 can be used to apply a pulling force or a thrust to the swing arm 30, so that the cantilever end of the swing arm 30 can eventually drive the vertical wheel 40 to generate an elastic extrusion force inward. The elastic clamping structure of the swing arm 30 is smooth when the vertical wheel 40 swings to both sides, thereby ensuring the stability of the car body 10 during operation. Of course, in actual implementation, a pipe-sleeve type telescopic rod structure can also be used, with one end of the telescopic rod connected to the car body 10 and the other end connected to the vertical wheel 40, and a spring that drives the telescopic rod to produce a contraction action can also be used to achieve an elastic connection between the vertical wheel 40 and the car body 10.

[0028] On the basis of the above, if Figure 2 As shown, each vertical wheel 40 includes a wheel axle 41 and a friction washer 42 fixed on the outer periphery of the wheel axle 41, and a smooth retaining ring 43 is fixed on the shaft body at both ends of the vertical wheel 40, and the friction washer 42 and the smooth retaining ring 43 at both ends are enclosed to form a running groove that is clamped with the track 70. After the running groove of the vertical wheel 40 is clamped on the track 70, when the car body 10 is running normally, the friction washer 42 ensures that there is good friction between the vertical wheel 40 and the track 70, ensuring that the car body 10 is stable and does not idle, and realizing accurate control of the speed and position of the car body 10; and when the car body 10 is running in a curve, the car body 10 is subjected to a large centrifugal derailment force. In this process, the vertical wheel 40 is mainly formed with the track 70 by the smooth retaining ring 43. Since the friction between the smooth retaining ring 43 and the track 70 is small, the probability of the vertical wheel 40 derailing is effectively reduced.

[0029] On the basis of the above, if Figure 2As shown, the ends of the friction washer 42 are respectively embedded in the inner sides of two smooth retaining rings 43, and the outer circumference of the friction washer 42 is provided with an annular groove, which together with the smooth retaining ring 43 forms a running groove. In the running groove structure finally formed by the vertical wheel 40, the bottom of the running groove and the groove wall adjacent to the bottom are friction surfaces, while the groove wall away from the bottom is smooth. When the vertical wheel 40 is running normally, the friction surfaces at the bottom and groove wall of the running groove cover the track 70, ensuring friction during normal driving and preventing the metal smooth surface from causing wear on the rubber track 70. In addition, when the vertical wheel 40 is running on a curved surface, when the vehicle body 10 is subjected to a smaller centrifugal force in the early stage, the friction surface of the groove wall of the running groove fits with the track 70, ensuring that a certain friction is still maintained between the vertical wheel 40 and the track 70, so that the vehicle body 10 runs stably; and when the vehicle body 10 is subjected to a larger centrifugal force in the later stage, the smooth surface of the groove wall of the running groove fits with the track 70, preventing the vertical wheel 40 from derailing due to excessive friction. Therefore, on the premise that the vertical wheel 40 does not derail, the stability of the vertical wheel 40 during the running on a curved surface is further guaranteed.

[0030] In addition, if Figure 2 As shown, the cross section of the running groove is open, so that when the vehicle body 10 is running on a curved surface, the smooth surface of the vertical wheel 40 near the running groove opening can better contact the rail 70.

[0031] Furthermore, the friction washer 42 is a polyurethane washer. Compared to rubber, polyurethane is stronger while ensuring friction, which helps maintain the stability of the vertical wheel 40. The smooth retaining ring 43 is a smooth metal retaining ring, specifically, it can be made of iron or stainless steel, which not only has a good smooth surface effect, but also has the advantages of high strength and good wear resistance.

[0032] Of course, it will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, but also encompasses the same or similar structures that can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and it is intended that all variations that fall within the meaning and range of equivalents of the claims be encompassed within the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0033] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0034] The technology, shape and structure that are not described in detail in this utility model are all well-known technologies.

Claims

1. A walking trolley with a Möbius strip track, characterized in that: The invention comprises a vehicle body (10) and an elastic steel plate (20) fixed at the bottom thereof, wherein plumb wheels (40) are installed at the four corners of the end of the elastic steel plate (20), and the plumb wheels (40) are elastically connected to the elastic steel plate (20) so that the plumb wheels (40) are elastically clamped and fitted on the track (70); the middle part of the elastic steel plate (20) is fixedly connected to the vehicle body (10), and a gap is provided between the elastic steel plate (20) and the vehicle body (10) for the elastic steel plate (20) to generate deformation; tension springs (60) are connected between the two ends of the elastic steel plate (20) and the vehicle body (10), and when the elastic steel plate (20) is in a non-deformed plane state, the tension springs (60) are in a state of not bearing load.

2. The walking trolley with a Möbius strip track according to claim 1, characterized in that: A swing arm (30) is hingedly connected to the elastic steel plate (20) via a vertical hinge seat, a vertical wheel (40) is mounted on the cantilever end of the swing arm (30), and a clamping spring (50) is connected between the swing arm (30) and the elastic steel plate (20) to form an elastic connection between the vertical wheel (40) and the elastic steel plate (20).

3. A walking trolley with a Möbius strip track according to claim 1 or 2, characterized in that: Each vertical wheel (40) comprises a wheel axle (41) and a friction washer (42) fixed on the outer periphery of the wheel axle (41), and smooth retaining rings (43) are fixed on the shafts at both ends of the friction washer (42) on the vertical wheel (40), and a running groove that is engaged with the track (70) is formed by the friction washer (42) and the smooth retaining rings (43) at both ends.

4. The walking trolley with a Möbius strip track according to claim 3, characterized in that: The two ends of the friction washer (42) are respectively embedded in the inner sides of the two smooth retaining rings (43), and the outer periphery of the friction washer (42) is provided with an annular groove, and the annular groove and the smooth retaining ring (43) together form the running groove.

5. The walking trolley with a Möbius strip track according to claim 3, characterized in that: The cross section of the groove cavity of the running groove is open.

6. The walking trolley with a Möbius strip track according to claim 3, characterized in that: The friction washer (42) is a polyurethane washer.

7. The walking trolley with a Möbius strip track according to claim 3, characterized in that: The smooth surface retaining ring (43) is a smooth surface metal retaining ring.

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