CN212373066U

CN212373066U - Deformable obstacle crossing wheel based on lantern mechanism

Info

Publication number: CN212373066U
Application number: CN202021117878.0U
Authority: CN
Inventors: 张娜; 朱青松; 荀致远
Original assignee: Beijing Polytechnic
Current assignee: Beijing Polytechnic
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2021-01-19
Anticipated expiration: 2030-06-16

Abstract

The utility model discloses a but flexible obstacle-surmounting wheel based on lantern mechanism, connect in the epaxial lantern form body of wheel including wherein one end, the center pin of lantern form body and the coincidence of the extension line of shaft, the diameter of lantern form body can be along with the reduction of lantern form body both ends interval and increase, and the outer wall of lantern form body corresponds stringcourse department and is equipped with a plurality of tire components. The utility model discloses the flexibility is good, can change fast between the work gesture of multiple difference, and it is many to adapt to the topography, uses the moving part of this wheel moreover and need not additionally set up the structure and just can realize turning to.

Description

Deformable obstacle crossing wheel based on lantern mechanism

Technical Field

The utility model belongs to intelligence hinders equipment field more, concretely relates to but flexible hinders wheel more based on lantern mechanism.

Background

The existing obstacle-surmounting robots are divided into wheeled robots, tracked robots, legged robots and spherical robots in moving modes, and different moving modes enable the robots to have different moving effects and adaptive working environments. The wheel type mobile robot has unique speed advantage on a flat structured road surface, the crawler type mobile robot has good trafficability on a fluctuant unstructured road surface, the leg type mobile robot has excellent obstacle crossing performance on a rugged mountain road and other complex road surfaces, and the ball type mobile robot has the characteristics of high moving efficiency and energy conservation. At present, no structure can simultaneously have all the performances, and most of the existing mobile robots use pairwise combination or even multiple combinations of the mobile structures to deal with various mixed road conditions.

However, most of moving structures have great limitation in combination due to the self-structure, so that the robot is very inflexible when various structures of different road surfaces are converted, the passing efficiency of the robot is affected, and the development of the application field of the robot is limited.

SUMMERY OF THE UTILITY MODEL

In order to solve the shortcoming that exists among the above-mentioned prior art, the utility model provides a but flexible obstacle-surmounting wheel based on lantern mechanism, concrete scheme is as follows:

the tire comprises a lantern-shaped body, wherein one end of the lantern-shaped body is connected to a wheel shaft, the central axis of the lantern-shaped body coincides with the extension line of the wheel shaft, the diameter of the lantern-shaped body can be increased along with the reduction of the distance between the two ends of the lantern-shaped body, and a plurality of tire components are arranged on the outer wall of the lantern-shaped body corresponding to the waist line.

Furthermore, the lantern-shaped body comprises a first connecting piece sleeved on the wheel shaft, one side of the first connecting piece is connected with a second connecting piece through a telescopic assembly, and the second connecting piece and the first connecting piece are arranged in parallel; the outer edge of the first connecting piece is hinged with a plurality of first rods which are uniformly arranged along the circumference, and the outer edge of the second connecting piece is hinged with a plurality of second rods which are in one-to-one correspondence with the first rods; the tire assemblies are connected with the lantern body through a plurality of intermediate pieces, and each intermediate piece is hinged to the tail end of one first rod and the tail end of one second rod at the same time.

Furthermore, the first connecting piece and the second connecting piece both comprise connecting piece main bodies, a plurality of connecting plates which are uniformly arranged along the circumference and are in a group of two-by-two are formed on the outer edge of each connecting piece main body, and a gap between the two connecting plates in the same group is in clearance fit with the head ends of the first rod and the second rod; the connecting plate is provided with a connecting hole, the head ends of the first rod and the second rod are provided with first shaft holes corresponding to the connecting hole, a first connecting shaft is arranged in each first shaft hole, and the two ends of the first connecting shaft are matched with the connecting hole.

Furthermore, the middle piece comprises a horizontal section and a vertical section, wherein two ends of the horizontal section are provided with first connecting grooves which are symmetrically arranged, the first connecting grooves are in clearance fit with the tail ends of the first rod and the second rod, the side walls of two sides of each first connecting groove are provided with first middle piece holes, the tail ends of the first rod and the second rod are provided with second shaft holes corresponding to the first middle piece holes, second connecting shafts penetrate through the second shaft holes, and two ends of each second connecting shaft are matched with the first middle piece holes; the tail end of the vertical section is provided with a second connecting groove which is used for connecting the tire assembly and is vertical to the first connecting groove, and the side walls of two sides of the second connecting groove are provided with second middleware holes.

Furthermore, the tire assembly comprises a tire connecting rod accommodated in the second connecting groove, the width of the tire connecting rod is smaller than that of the second connecting groove, one end of the tire connecting rod is provided with a third shaft hole corresponding to the second middleware hole, a third connecting shaft penetrates through the third shaft hole, and two ends of the third connecting shaft are matched with the second middleware hole; the other end of the tire connecting rod is vertically connected with a tire grounding contact rod, the tire grounding contact rod is formed into an arc shape, and the circle center of the tire grounding contact rod is located on a connecting line of the circle center of the first connecting piece and the circle center of the second connecting piece.

Furthermore, a torsion spring is sleeved on a part, located in the second connecting groove, of the third connecting shaft, the height of the torsion spring is equal to the difference between the width of the second connecting groove and the width of the tire connecting rod, and two ends of the torsion spring are connected to the intermediate piece and the tire connecting rod respectively.

Further, one end of the tire ground contact rod is formed into a fork, and the distance of the fork is larger than the width of the tire ground contact rod.

Further, the tire connecting rod is made of a hard material, and the tire ground contacting rod is made of an elastic material.

Further, the cross section that the ground pole was touched to the tire is trapezoidal, the bottom surface and the terminal surface that the ground pole was touched to the tire all formed with anti-skidding line.

Furthermore, the telescopic assembly comprises an electric push rod fixedly connected to the side face of the second connecting piece opposite to the first connecting piece, and the output end of the electric push rod is fixedly connected to the side face of the first connecting piece opposite to the second connecting piece.

The beneficial effects of the utility model reside in that:

the utility model provides a pair of but based on lantern mechanism's flexible hinders wheel more, the flexibility is good, can change fast between the work gesture of multiple difference, and it is many to adapt to the topography, uses the moving part of this wheel moreover and need not additionally set up the structure and just can realize turning to.

Drawings

Figure 1 is a schematic structural view of the utility model in a first working state,

figure 2 is a schematic left side view of the present invention in a first operating state,

figure 3 is a schematic front view of the present invention in a first operating state,

figure 4 is a schematic structural view of the lantern-shaped main body of the present invention,

FIG. 5 is an enlarged view of the first and second connecting members of the present invention,

FIG. 6 is an enlarged view of the first and second rods of the present invention,

figure 7 is an enlarged view of the structure of the intermediate piece of the utility model,

figure 8 is an enlarged view of the structure of the tire assembly of the present invention,

FIG. 9 is a schematic structural view of an embodiment of the tire grounding bar of the present invention,

figure 10 is a schematic structural view of another embodiment of a ground contacting bar according to the present invention,

figure 11 is a schematic view of the connection of the tire assembly of the present invention to an intermediate member,

figure 12 is a schematic structural view of the utility model in a second working state,

figure 13 is a schematic left side view of the present invention in a second operating state,

fig. 14 is a schematic front view of the present invention in the second operating state.

Figure number and name: 10. axle, 20, lantern body, 21, first connecting piece, 22, second connecting piece, 23, first pole, 24, second pole, 25, connecting plate, 26, connecting hole, 27, first axle hole, 28, second axle hole, 30, tire subassembly, 31, tire connecting rod, 32, third axle hole, 33, tire ground contact pole, 40, telescopic component, 50, middleware, 51, horizontal segment, 52, vertical segment, 53, first connecting groove, 54, first middleware hole, 55, second connecting groove, 56, second middleware hole, 60, torsion spring.

Detailed Description

In order to explain the technical content, structural features, achieved objects and functions of the present invention in detail, the following embodiments are described in detail with reference to the accompanying drawings.

As shown in fig. 1, the utility model discloses a but flexible obstacle-surmounting wheel based on lantern mechanism, including wherein one end connect in the epaxial lantern form body 20 of wheel, the center pin of lantern form body 20 and the coincidence of the extension line of wheel axle 10, the diameter of lantern form body 20 can be along with the reduction of lantern form body 20 both ends interval and increase, and the outer wall of lantern form body 20 corresponds stringcourse department and is equipped with six tire assembly 30. Through the interval of adjusting lantern form body both ends, realize the quick adjustment of wheel diameter, make it can adapt to the road surface of various different grade types.

Referring to fig. 2 to 4, the lantern body 20 includes a first connecting member 21 sleeved on the wheel axle 10, one side of the first connecting member 21 is connected to a second connecting member 22 through a telescopic assembly 40, and the second connecting member 22 is arranged in parallel with the first connecting member 21; the outer edge of the first connecting piece 21 is hinged with six first rods 23 which are uniformly arranged along the circumference, and the outer edge of the second connecting piece 22 is hinged with six second rods 24 which correspond to the first rods 23 one by one; six tyre assemblies 30 are connected to the lantern body 20 by means of six intermediate members 50, each intermediate member 50 being hinged to both an end of one first rod 23 and an end of one second rod 24. The telescopic assembly 40 comprises an electric push rod fixedly connected to the side of the first connecting piece 21 opposite to the second connecting piece 22, and the output end of the electric push rod is fixedly connected to the side of the second connecting piece 22 opposite to the first connecting piece 21.

As shown in fig. 5, each of the first connecting member 21 and the second connecting member 22 includes a connecting member main body, twelve connecting plates 25 are formed on the outer edge of the connecting member main body and are uniformly arranged along the circumference, each two connecting plates 25 are in a group, a gap between two connecting plates 25 in the same group is in clearance fit with the head ends of the first rod 23 and the second rod 24, and a connecting hole 26 is formed in each connecting plate 25. As shown in fig. 6, the first ends of the first rod 23 and the second rod 24 are respectively provided with a first shaft hole 27 corresponding to the connecting hole 26, a first connecting shaft (not shown in the drawings) is arranged in the first shaft hole 27, and two ends of the first connecting shaft are matched with the connecting hole 26.

Referring to fig. 7, the middle part 50 includes a horizontal section 51 and a vertical section 52, wherein two ends of the horizontal section 51 are provided with first connecting grooves 53 symmetrically arranged, the first connecting grooves 53 are in clearance fit with the tail ends of the first rod 23 and the second rod 24, and the side walls of two sides of the first connecting grooves 53 are provided with first middle part holes 54. As shown in fig. 6, the tail ends of the first rod 23 and the second rod 24 are both provided with a second shaft hole 28 corresponding to the first intermediate member hole 54, a second connecting shaft (not shown in the drawing) is arranged in the second shaft hole 28 in a penetrating manner, and two ends of the second connecting shaft are matched with the first intermediate member hole 54; the end of the vertical section 52 is opened with a second connecting groove 55 perpendicular to the first connecting groove 53 for connecting the tire assembly 30, and the sidewalls of the second connecting groove 55 are opened with a second intermediate member hole 56.

As shown in fig. 8, the tire assembly 30 includes a tire connecting rod 31 received in the second connecting groove 55, the width of the tire connecting rod 31 is smaller than the width of the second connecting groove 55, one end of the tire connecting rod 31 is provided with a third shaft hole 32 corresponding to the second intermediate member hole 56, a third connecting shaft (not shown in the drawing) is inserted into the third shaft hole 32, and two ends of the third connecting shaft are matched with the second intermediate member hole 56; the other end of the tire connecting rod 31 is vertically connected with a tire grounding contact rod 33, the tire grounding contact rod 33 is shaped into an arc, and the center of the tire grounding contact rod 33 is located on the connecting line of the center of the first connecting piece 21 and the center of the second connecting piece 22.

One end of the tire grounding contact rod 33 is formed into a fork, and the distance between the forks is larger than the width of the tire grounding contact rod 33, so that the bottom surface of the tire grounding contact rod is in a shape like a Chinese character 'ren' (as shown in fig. 9 or fig. 10), the bottom surface can ensure that the diameter of the lantern body is minimum when the distance between the two ends of the lantern body is maximum, and the head end of each tire grounding contact rod can be accommodated in the fork at the tail end of the previous tire grounding contact rod, so that the tire assembly can be accommodated into a circle with a small diameter.

As shown in fig. 11, a torsion spring 60 is sleeved on a portion of the third connecting shaft located inside the second connecting groove 55, a height of the torsion spring 60 is equal to a difference between a width of the second connecting groove 55 and a width of the tire connecting rod 31, and both ends of the torsion spring 60 are respectively connected to the intermediate member 50 and the tire connecting rod 31. When the tire is in an unstressed state, the tire connecting rod and the vertical section of the intermediate piece are ensured to be positioned on the same straight line.

The tire connecting rod 31 is made of hard materials, so that the tire connecting rod is always arranged in the radial direction of the connecting piece, bears radial load and plays a role of a spoke; the tire touch pole 33 is made of elastic material, such as rubber, can adapt to the shape of the ground to be bent under the premise of ensuring the ground gripping performance, and can automatically reset under the action of a torsion spring after turning over an obstacle or climbing up a step, thereby playing the role of a tire surface.

The cross section that the tire touched ground pole 33 is trapezoidal, and the increase tire touches the area of contact of ground pole and ground, further improves its ground performance of grabbing, guarantees the stability of normally traveling, and the bottom surface and the terminal surface that the tire touched ground pole 33 all are shaped and have anti-skidding line, improve its ability of hindering more.

The working principle of the utility model is as follows:

1. when walking on a flat ground, the electric push rod moves to the longest form, the diameter of the lantern-shaped body is the smallest at the moment, a plurality of herringbone rod parts of the deformation wheel are overlapped (the main view angle) and combined into a complete circle, and then the lantern-shaped body is driven to rotate through the wheel shaft (as shown in figures 1-3);

2. when the deformation wheel crosses an obstacle or climbs a step, the electric push rod moves to the shortest form, the diameter of the lantern-shaped body is the largest at this time, a plurality of herringbone ground contact rods of the deformation wheel do not contact with each other (the main view angle) and work independently, the wheels become legged robots, and gaps between every two adjacent ground contact rods can be used for crossing the obstacle or climbing the step (as shown in figures 12-14);

3. when the lantern-shaped body is used for walking on the ground with the pit groove, the electric push rod is retracted inwards for a certain length (the specific length can be determined by the size of the pit groove on the ground), the diameter of the lantern-shaped body is increased, the head-to-tail correspondence (the main view angle) of the plurality of herringbone ground touching rods of the deformation wheel is changed into a circle with a larger radius, and then the lantern-shaped body is driven to rotate through the wheel shaft (the shape is between 1 and 2).

The base part of each herringbone touch pole is provided with a torsion spring, when the herringbone touch pole crosses an obstacle or climbs a step, the herringbone touch pole can adapt to the shape of the ground and be bent, and the herringbone touch pole can automatically reset under the action of the torsion spring after crossing the obstacle or climbing the step, so that a certain assistance effect is realized on obstacle crossing.

In addition, when the angular velocity of dolly shaft motion is the same, the lantern form body through the dolly both sides is in the form realization of difference and need not set up and turn to the device and just can let the dolly turn: for example, when the diameters of the two lantern-shaped bodies on the left side of the trolley are smaller than the diameters of the two lantern-shaped bodies on the right side of the trolley, the trolley turns left; when the diameters of the two lantern-shaped bodies on the left side of the trolley are larger than the diameters of the two lantern-shaped bodies on the right side of the trolley, the trolley turns to the right.

In summary, the preferred embodiments of the present invention are only examples, and the scope of the present invention is not limited thereto, and all equivalent changes and modifications made in accordance with the scope of the present invention and the contents of the specification are within the scope covered by the present invention.

Claims

1. The utility model provides a but, flexible obstacle-surmounting wheel based on lantern mechanism which characterized in that: the wheel comprises a lantern-shaped body (20) with one end connected to a wheel shaft (10), wherein the central axis of the lantern-shaped body (20) is overlapped with the extension line of the wheel shaft (10), the diameter of the lantern-shaped body (20) can be increased along with the reduction of the distance between the two ends of the lantern-shaped body (20), and a plurality of tire components (30) are arranged on the outer wall of the lantern-shaped body (20) corresponding to the waist line.

2. A transformable obstacle-surmounting wheel based on a lantern mechanism, as defined in claim 1, wherein: the lantern-shaped body (20) comprises a first connecting piece (21) sleeved on the wheel shaft (10), one side of the first connecting piece (21) is connected with a second connecting piece (22) through a telescopic assembly (40), and the second connecting piece (22) is arranged in parallel with the first connecting piece (21); the outer edge of the first connecting piece (21) is hinged with a plurality of first rods (23) which are uniformly arranged along the circumference, and the outer edge of the second connecting piece (22) is hinged with a plurality of second rods (24) which are in one-to-one correspondence with the first rods (23); the plurality of tyre components (30) is connected to the lantern body (20) by a plurality of intermediate members (50), each intermediate member (50) being hinged to both an end of one of the first bars (23) and an end of one of the second bars (24).

3. A transformable obstacle-surmounting wheel based on a lantern mechanism, according to claim 2, wherein: the first connecting piece (21) and the second connecting piece (22) both comprise connecting piece main bodies, a plurality of connecting plates (25) which are uniformly arranged along the circumference and are in group two by two are formed on the outer edge of each connecting piece main body, and a gap between the two connecting plates (25) in the same group is in clearance fit with the head ends of the first rod (23) and the second rod (24); connecting hole (26) have been seted up on connecting plate (25), first pole (23) with first shaft hole (27) that correspond with connecting hole (26) are all seted up to the head end of second pole (24), be equipped with first connecting axle in first shaft hole (27), the both ends of first connecting axle with connecting hole (26) cooperation.

4. A transformable obstacle-surmounting wheel based on a lantern mechanism, according to claim 3, wherein: the middle piece (50) comprises a horizontal section (51) and a vertical section (52), two ends of the horizontal section (51) are provided with first connecting grooves (53) which are symmetrically arranged, the first connecting grooves (53) are in clearance fit with the tail ends of the first rod (23) and the second rod (24), the side walls of two sides of the first connecting grooves (53) are provided with first middle piece holes (54), the tail ends of the first rod (23) and the second rod (24) are provided with second shaft holes (28) corresponding to the first middle piece holes (54), second connecting shafts penetrate through the second shaft holes (28), and two ends of the second connecting shafts are matched with the first middle piece holes (54); the tail end of the vertical section (52) is provided with a second connecting groove (55) which is used for connecting the tire component (30) and is vertical to the first connecting groove (53), and the side walls of two sides of the second connecting groove (55) are provided with second middle piece holes (56).

5. A deformable obstacle-surmounting wheel based on a lantern mechanism, as defined in claim 4, wherein: the tire assembly (30) comprises a tire connecting rod (31) accommodated in the second connecting groove (55), the width of the tire connecting rod (31) is smaller than that of the second connecting groove (55), one end of the tire connecting rod (31) is provided with a third shaft hole (32) corresponding to the second intermediate piece hole (56), a third connecting shaft penetrates through the third shaft hole (32), and two ends of the third connecting shaft are matched with the second intermediate piece hole (56); the other end of tire connecting rod (31) is connected with tire perpendicularly and touches ground pole (33), the shaping of tire touch ground pole (33) is the arc, the centre of a circle that the tire touched ground pole (33) is located first connecting piece (21) the centre of a circle with on the line of second connecting piece (22) the centre of a circle.

6. A deformable obstacle-surmounting wheel based on a lantern mechanism, as defined in claim 5, wherein: the third is connected and is located partial cover in second connecting groove (55) on the axle is equipped with torsion spring (60), torsion spring (60) highly be equal to second connecting groove (55) width with the difference of the width of tire connecting rod (31), torsion spring (60) both ends connect respectively in intermediate member (50) with on the tire connecting rod (31).

7. A deformable obstacle-surmounting wheel based on a lantern mechanism, as defined in claim 6, wherein: one end of the tire ground contact rod (33) is formed to be branched, and the distance of the branches is larger than the width of the tire ground contact rod (33).

8. A transformable obstacle-surmounting wheel based on a lantern mechanism, according to claim 7, wherein: the tire connecting rod (31) is made of a hard material, and the tire ground contacting rod (33) is made of an elastic material.

9. A transformable obstacle-surmounting wheel based on a lantern mechanism, according to claim 8, wherein: the cross section that the ground pole (33) was touched to the tire is trapezoidal, the bottom surface and the terminal surface that the ground pole (33) was touched to the tire all shaping have anti-skidding line.

10. A transformable obstacle-surmounting wheel based on a lantern mechanism, according to claim 2, wherein: the telescopic assembly (40) comprises an electric push rod fixedly connected to the side face of the first connecting piece (21) opposite to the second connecting piece (22), and the output end of the electric push rod is fixedly connected to the side face of the second connecting piece (22) opposite to the first connecting piece (21).