CN219600815U - Walking wheel - Google Patents

Abstract

The utility model provides a walking wheel, which comprises a wheel frame, a wheel body, a driving mechanism and a braking mechanism, wherein the wheel body is connected with the wheel frame, the wheel body can rotate relative to the wheel frame, the driving mechanism and the braking mechanism are both arranged on the wheel frame and are in transmission connection with the braking mechanism, after driving force is applied to the driving mechanism, the driving mechanism drives the braking mechanism to release braking of the wheel body, or after the driving force applied to the driving mechanism is removed, the driving mechanism self-resets and drives the braking mechanism to brake the wheel body; the walking wheel has the advantages of reasonable structure and simple and convenient use.

Description

Walking wheel

Technical Field

The utility model belongs to the technical field of rollers, and particularly relates to a travelling wheel.

Background

Road wheels, also known as rollers, are a widely used mechanical device that is commonly used to mount on the bottom of devices such as nursing beds, seats, carts, and rehabilitation aid walking devices and allow easy movement of the devices such as nursing beds, seats, carts; however, the travelling wheel in the prior art has the problem of inconvenient use, such as a novel brake castor disclosed in the patent application number 201921996679.9. Specifically, taking a nursing bed as an example, four travelling wheels are generally required to be installed on one nursing bed, and when the nursing bed needs to be fixed, the travelling wheels on the nursing bed need to be stopped, so that the travelling wheels cannot roll freely, and the aim of fixing the nursing bed is fulfilled; furthermore, when the travelling wheels are braked, the travelling wheels are required to be braked respectively by the staff through the feet, and similarly, when the travelling wheels are required to be unlocked, the travelling wheels are required to be unlocked respectively, that is, the travelling wheels are required to be braked or unlocked, the same actions are required to be repeated four times, and therefore the use of the travelling wheels is inconvenient.

Disclosure of Invention

Therefore, the utility model aims to provide the travelling wheel which is reasonable in structure and simple and convenient to use.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a walking wheel, its includes wheel carrier, wheel body, actuating mechanism and brake mechanism, the wheel body with the wheel carrier is connected, just the wheel body can rotate for the wheel carrier, actuating mechanism with brake mechanism is all installed on the wheel carrier, just actuating mechanism with brake mechanism transmission is connected, after applying the actuating force to actuating mechanism, actuating mechanism drives and makes brake mechanism release the stopping to the wheel body, perhaps, after removing the actuating force that is applied on actuating mechanism, actuating mechanism self-reset and drive brake mechanism stops the wheel body.

As a further improvement on the travelling wheel, the travelling wheel further comprises a steering mechanism, the wheel frame is connected with the steering mechanism, the wheel frame can rotate relative to the steering mechanism, and the driving mechanism is matched with the steering mechanism;

the driving mechanism is configured to unlock the steering mechanism after a driving force is applied to the driving mechanism, or to lock the wheel carrier and the steering mechanism after the driving force applied to the driving mechanism is removed.

As a further improvement to the walking wheel, the braking mechanism comprises a rocker arm, a braking drum and a braking pin, wherein the rocker arm is rotationally connected with the wheel frame, the braking pin is fixed at one end of the rocker arm, the other end of the rocker arm is connected with the driving mechanism, the braking drum is fixed on the wheel body, and when the braking mechanism is in a braking state, the braking pin is abutted against the inner wall of the braking drum.

As a further improvement to the travelling wheel, a plurality of first tooth grooves are further formed in the side wall of the brake drum along the circumferential direction of the brake drum, and when the brake mechanism is in a brake state, the brake pin is clamped in any one of the first tooth grooves.

As a further improvement to the road wheel, the steering mechanism includes a first connecting portion and a second connecting portion, the first connecting portion and the second connecting portion are fixedly connected, the first connecting portion is used for connecting an external device, the second connecting portion is connected with the wheel frame, and the second connecting portion is connected with the driving mechanism.

As a further improvement on the travelling wheel, the driving mechanism comprises a first guide column, a second guide column, a first elastic piece and a second elastic piece, wherein the first guide column is in sliding connection with the wheel frame, one end of the first elastic piece is abutted against the wheel frame, the other end of the first elastic piece is abutted against the first end of the first guide column, the second end of the first guide column is abutted against the first end of the second guide column, the second end of the second guide column is in sliding connection with the second connecting part, one end of the second elastic piece is abutted against the second guide column, and the other end of the second elastic piece is abutted against the wheel frame;

the end face of the first end of the first guide post is also provided with a plurality of second tooth grooves, the second tooth grooves are arranged around the axial lead of the first guide post, and the end face of the first end of the second guide post is provided with convex teeth matched with the second tooth grooves;

after the driving force is applied to the driving mechanism, the driving mechanism drives and enables the brake mechanism to release the brake of the wheel body, the steering mechanism can drive the second guide post to rotate relative to the first guide post,

or after the driving force applied to the driving mechanism is removed, the driving mechanism is self-reset and drives the braking mechanism to brake the wheel body, and the second guide post and the first guide post are locked and the wheel frame is in a non-rotatable state relative to the cover plate of the steering mechanism.

As a further improvement to the travelling wheel, the driving mechanism further comprises a stay wire, one end of the stay wire is rotatably connected with the second guide post, the second end of the stay wire is used for being connected with external equipment, and the stay wire is used for driving and enabling the second guide post and enabling the convex teeth to be separated from the second tooth grooves on the first guide post relative to the axial direction of the first guide post or the second guide post.

As a further improvement of the traveling wheel, the wire penetrates the cover plate, the first connecting portion, and the second connecting portion with respect to an axial direction of the steering mechanism.

As a further improvement of the travelling wheel, the elastic coefficient of the second elastic member is larger than that of the first elastic member, after the driving force applied to the driving mechanism is removed, the second elastic member pushes and enables the second guide post to abut against the first guide post, and the second guide post and the convex tooth on the first guide post are meshed with the second tooth groove, so that the wheel frame and the steering mechanism are locked.

As a further improvement on the travelling wheels, two wheels are arranged, the wheels are respectively arranged on two sides of the wheel frame, a containing cavity is formed between the wheels and the wheel frame, and the driving mechanism and the braking mechanism are both positioned in the containing cavity.

As a further improvement on the travelling wheels, each wheel body is provided with a brake drum, and brake pins matched with the brake drums are fixed on two sides of a rocker arm of the brake mechanism.

As a further improvement to the travelling wheel, the rocker arm comprises a first force arm, a second force arm, a third connecting part and a fourth connecting part, wherein the first ends of the first force arm and the second force arm are fixedly connected, an included angle is formed between the axes of the first force arm and the second force arm, and the length of the first force arm is larger than that of the second force arm;

the third connecting portion is located at the joint of the first force arm and the second force arm, the brake pin is fixed at the second end of the second force arm, the fourth connecting portion is fixed at the second end of the first force arm, and the fourth connecting portion is in transmission connection with the driving mechanism.

Compared with the prior art, the utility model has the following main beneficial effects: through set up the actuating mechanism mutually supporting with brake mechanism on the walking wheel, after removing the drive force of exerting on actuating mechanism, actuating mechanism is from resetting and drive brake mechanism stops the wheel body, that is to say, can accomplish the braking or the release braking to the walking wheel at the single control action of walking wheel to the convenience of walking wheel control in the use has been improved, the convenience that has improved the walking wheel and has used.

Drawings

The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular description of preferred embodiments of the utility model, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intentionally drawn to scale on actual size or the like, with emphasis on illustrating the principles of the utility model.

FIG. 1 is a schematic view of the overall structure of a running wheel according to the present utility model;

FIG. 2 is a schematic side view of the walking wheel of the present utility model with one side wheel body removed;

FIG. 3 is an exploded view of the bottom view of the running gear of the present utility model;

FIG. 4 is an exploded view of the top view of the running wheel of the present utility model;

fig. 5 is a schematic structural view of a rocker arm according to the present utility model.

Detailed Description

The technical solutions of the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments so that those skilled in the art may better understand the present utility model and implement the same, but the illustrated embodiments are not limiting of the present utility model, and in this embodiment, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present utility model, and do not indicate or imply that the referred devices or elements must have specific orientations, be configured and operated in specific orientations, and therefore should not be construed as limiting of the present utility model.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to and integrated with the other element or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like are used herein for illustrative purposes only.

As shown in fig. 1 to 5, the present embodiment provides a road wheel, which includes a wheel frame 1, a wheel body 2, a driving mechanism 3, and a braking mechanism 4; the wheel body 2 is connected to the wheel carrier 1 via a wheel axle, so that the wheel body 2 can rotate relative to the wheel carrier 1, the wheel carrier 1 serving as a support for the wheel body 2 or the wheel carrier 1 serving as a carrier for the wheel body 2. The driving mechanism 3 and the braking mechanism 4 are both arranged on the wheel frame 1, and the driving mechanism 3 is in transmission connection with the braking mechanism 4. Further, when a driving force is applied to the driving mechanism 3, the driving mechanism 3 drives and causes the braking mechanism 4 to release the braking of the wheel body 2; alternatively, after the driving force applied to the driving mechanism 3 is removed, the driving mechanism 3 self-resets and drives the braking mechanism 4 to brake the wheel body 2. Through set up the actuating mechanism 3 mutually supporting with brake mechanism 4 on the walking wheel, after removing the actuating force of exerting on actuating mechanism 3, actuating mechanism 3 self-reset and drive brake mechanism 4 stop wheel body 2, that is to say, carry out the single control action to the walking wheel and can accomplish the stopping or the stopping of releasing to the walking wheel to the convenience of walking wheel control in the use has been improved, promptly, the convenience of walking wheel use has been improved.

As shown in fig. 1-4, in a preferred embodiment, the travelling wheel further comprises a steering mechanism 5, the wheel carrier 1 is connected to the steering mechanism 5, the wheel carrier 1 is rotatable relative to the steering mechanism 5, and the driving mechanism 3 is co-operating with the steering mechanism 5. After the steering mechanism 5 is arranged on the wheel carrier 1, the wheel carrier 1 or the wheel body 2 arranged on the wheel carrier 1 can be flexibly rotated, that is to say, the moving direction can be freely adjusted when the travelling wheels are arranged on a bed, a seat or a cart. Further, when the driving force is applied to the driving mechanism 3, the driving mechanism 3 releases the brake of the wheel body 2 and also releases the lock of the steering mechanism 5 in addition to the brake mechanism 4; alternatively, after the driving force applied to the driving mechanism 3 is removed, the driving mechanism 3 self-resets and drives the brake mechanism 4 to brake the wheel body 2, and at the same time, the driving mechanism 3 also locks the wheel carrier 1 with the steering mechanism 5. That is, the driving mechanism 4 synchronously controls the steering mechanism 5 and the braking mechanism 4. In particular, for example, when the road wheels are mounted on a nursing bed, in order to enable the road wheels to turn smoothly during use, the axis of rotation of the wheel carrier 1 relative to the turning mechanism 5 is spaced from the axis of rotation of the wheel body 2 relative to the wheel carrier 1, or the projection points of the legs of the nursing bed relative to the ground and the contact points of the wheel body 2 relative to the ground are spaced from each other; that is, when the braking mechanism 4 brakes the wheel body 2, the nursing bed can not move any more, but the nursing bed can shake by taking the steering mechanism 5 as a movable point, so that the nursing bed is in an unstable state; therefore, after the steering mechanism 5 is synchronously locked by the driving mechanism 3, the nursing bed can be in a stable state when the nursing bed does not need to be moved, so that the travelling wheels and the use convenience of the nursing bed are further improved. Meanwhile, the use safety of the nursing bed can be improved, and particularly, if the casters in the prior art are forgotten to lock, the nursing bed is in a relatively unstable state, for example, when a user gets on or gets off the bed or a nursing staff leans on the nursing bed, a thrust force is inevitably generated on the nursing bed at the moment, so that the nursing bed can be moved, and further, the falling of the staff and personal injury can be caused.

As shown in fig. 3-5, in a preferred embodiment, the braking mechanism 4 includes a rocker arm 6, a braking drum 7 and a braking pin 8, the rocker arm 6 is rotationally connected with the wheel frame 1 through a pin shaft, the braking pin 8 is fixed at one end of the rocker arm 6, the braking pin 8 in this embodiment is in a strip shape, the braking pin 8 and the rocker arm 6 are integrally formed, the other end of the rocker arm 6 is in transmission connection with the driving mechanism 3, the braking drum 7 is fixed on the wheel body 2, and the braking drum 7 in this embodiment is integrally formed with the wheel body 2. Further, when the brake mechanism 4 is in a brake state, the brake pin 8 is abutted against the inner wall of the brake drum 7. Further, the inner wall of the brake drum 7 along the circumferential direction is further provided with a plurality of first tooth grooves 9, when the brake mechanism 4 is in the brake state, the brake pin 8 is clamped in any one of the first tooth grooves 9, and in this embodiment, the axis of each first tooth groove 9 is parallel to the rotation axis of the wheel body 2, that is, after the brake pin 8 is clamped in the first tooth groove 9 of the brake drum 7, the wheel frame 1 of the wheel body 2 is in a non-rotatable state, that is, the brake of the travelling wheel is performed.

As shown in fig. 3 to 4, in the preferred embodiment, the steering mechanism 5 includes a first connecting portion 11 and a second connecting portion 12, one ends of the first connecting portion 11 and the second connecting portion 12 are fixedly connected, and the first connecting portion 11 and one end of the second connecting portion 12 in this embodiment are integrally formed; further, the first connecting portion 11 is used for connecting an external device, for example, the first connecting portion 11 is fixed on a bed leg of a nursing bed, the second connecting portion 12 is connected to the wheel frame 1 through a bearing 13, that is, the wheel frame 1 can rotate relative to the first connecting portion 11 or the second connecting portion 12, and the second connecting portion 12 is connected to the driving mechanism 3. Further, the dust collecting device further comprises a cover plate 10, the cover plate 10 is sleeved outside the second connecting portion 12, the cover plate 10 is used for shielding the connecting portion of the second connecting portion 12 and the wheel frame 1, dust is prevented or reduced from directly falling on the connecting portion of the second connecting portion 12 and the wheel frame 1, and abrasion of the bearing 13 caused by entering the dust is further prevented or reduced.

As shown in fig. 3-4, in a preferred embodiment, the drive mechanism 3 comprises a first guide post 14, a second guide post 15, a first resilient member 16 and a second resilient member 17, the first guide post 14 being slidably connected to the wheel carrier 1. Specifically, the wheel carrier 1 is provided with a chute, and the first guide post 14 is disposed in the chute and reciprocates along the length direction of the chute, and the axis of the chute is parallel to the axis of the first guide post 14. Further, one end of the first elastic member 16 is abutted against the wheel frame 1, the other end is abutted against the first end of the first guide post 14, the second end of the first guide post 14 is abutted against the first end of the second guide post 15, and the second end of the second guide post 15 is slidably connected with the second connecting portion 12; specifically, the end of the second connecting portion 12 is provided with an external spline 18, which may, of course, be a polygonal cylinder, such as a quadrangular cylinder; the second guide post 15 is also provided with an internal spline (not shown) that is matched with the external spline 18, so that the second guide post 15 can slide along the axis or the length direction of the second connecting portion 12, but cannot rotate relative to the second connecting portion 12; further, one end of the second elastic member 17 abuts against the second guide post 15, and the other end abuts against the wheel carrier 1.

As shown in fig. 3 to 4, in the preferred embodiment, a plurality of second tooth grooves 19 are further provided on the end surface of the first end of the first guide post 14, the second tooth grooves 19 are arranged radially around the axis of the first guide post 14, and the protruding teeth 20 that are mutually matched with the second tooth grooves 19 are provided on the end surface of the first end of the second guide post 15. Further, after the driving force is applied to the driving mechanism 3, the driving mechanism 3 drives and enables the brake mechanism 4 to release the brake of the wheel body 2, and the steering mechanism 5 can drive the second guide post 15 to rotate relative to the first guide post 14; alternatively, after the driving force applied to the driving mechanism 3 is removed, the driving mechanism 3 self-resets and drives the braking mechanism 4 to brake the wheel body 2, and the second guide post 15 is locked with the first guide post 14 and makes the wheel frame 1 in a non-rotatable state with respect to the cover plate 10. Further, the driving mechanism 3 further includes a pull wire 21, one end of the pull wire 21 is connected to the second guide post 15 and is rotatably connected, the second end of the pull wire 21 is used for connecting an external device, and the pull wire 21 is used for driving and separating the second guide post 15 and the tooth 20 from the second tooth socket 19 on the first guide post 14 relative to the axial direction of the first guide post 14 or the second guide post 15. The wire 21 penetrates the cover plate 10, the first connection portion 11 and the second connection portion 12 with respect to the axial direction of the steering mechanism 5. The first elastic member 16 and the second elastic member 17 in this embodiment are both coil springs; and the elastic coefficient of the second elastic member 17 is larger than that of the first elastic member 16, after the driving force applied to the driving mechanism 3 is removed, the second elastic member 17 pushes and enables the second guide post 15 to abut against the first guide post 14, and the second guide post 15 and the convex teeth 20 on the first guide post 14 are meshed with the second tooth grooves 19, so that the wheel carrier 1 and the steering mechanism 5 are locked.

Specifically, when a pulling force is applied to the pull wire 21, the second guide post 15 connected to the pull wire 21 moves backward along the second connection portion 12 toward the first connection portion 11 against the elastic force of the second elastic member 17 under the action of the pulling force; at this time, the first elastic member 16 is no longer subjected to the elastic force of the second elastic member 17, that is, the first elastic member 16 in the compressed state is restored under the self elastic potential energy, so as to push the first guide post 14 to move towards the first connecting portion 11, and meanwhile, the first guide post 14 drives the rocker arm 6 to swing, so that the brake pin 8 on the rocker arm 6 is disengaged from the first tooth slot 9 in the brake drum 7, that is, the brake on the wheel body 2 is released. At this time, the teeth 20 on the second guide post 15 are not separated from the second tooth grooves 19 on the first guide post 14, so that the traveling wheel can only travel (roll) at this time, but the steering function cannot be realized, that is, the traveling wheel can only directionally roll at this time; further, as the second guide post 15 continues to move toward the first connecting portion 11, the teeth 20 on the second guide post 15 are disengaged from the second tooth slots 19 on the first guide post 14; that is, the wheel body 2 can now rotate freely, i.e. walk, relative to the wheel carrier 1; at the same time, the wheel carrier 1 can also be turned freely, i.e. turned, relative to the first connection 11 or the second connection 12 in the steering mechanism 5. Conversely, when the force applied to the wire 21 is removed, the second elastic member 17 in the compressed state starts to return (extend) and pushes the second guide post 15 to move toward the first guide post 14 and form an abutment with the first guide post 14, and since the elastic coefficient of the second elastic member 17 is greater than that of the first elastic member 16, that is, the elastic force of the first elastic member 16 is smaller than that of the second elastic member 17, the second elastic member 17 continues to push the first guide post 14 and compress the second elastic member 16; meanwhile, the first guide post 14 moves away from the first connecting part 11 and drives the rocker arm 6 to swing until the brake pin 8 on the rocker arm 6 is clamped in the first tooth groove 9 of the wheel body 2, so that the wheel body 2 is in a non-rotatable state relative to the wheel frame 1, namely, is braked; meanwhile, after the second guide post 15 is abutted with the first guide post 14, the convex teeth 20 on the second guide post 15 are clamped in the second tooth grooves 19 of the first guide post 14 (form engagement), so that the wheel carrier 1 cannot rotate relative to the second connecting portion 12 or the first connecting portion 11, namely, the steering function of the travelling wheel is locked.

As shown in fig. 1, 3 and 4, in the preferred embodiment, two wheels 2 are provided, the wheels 2 are respectively mounted on two sides of the wheel frame 1, a containing cavity is formed between the wheels 2 and the wheel frame 1, and the driving mechanism 3 and the braking mechanism 4 are both located in the containing cavity. The two wheel bodies 2 are arranged, so that the travelling wheels can have better bearing capacity, and the driving mechanism 3 and the braking mechanism 4 are placed in the accommodating cavity, so that protection is formed for the driving mechanism 3 and the braking mechanism 4, and the probability of faults or damages of the travelling wheels caused by collision is avoided or reduced.

As shown in fig. 1, 3 and 4, in the preferred embodiment, each wheel body 2 is provided with a brake drum 7, and two sides of a rocker arm 6 of the brake mechanism 4 are fixed with brake pins 8 which are matched with the brake drum 7; that is, each wheel body 2 can be braked, so that the phenomenon that the other wheel body 2 which is not braked can rotate or swing by taking the braked wheel body 2 as a fulcrum after only one wheel body 2 is braked is avoided, and the stability of the travelling wheel after being braked is further improved; further, for example, when the travelling wheels are applied to a nursing bed, and when both the wheel bodies 2 can be braked, the stability of the nursing bed can be further improved, and the shaking is reduced.

As shown in fig. 5, in the preferred embodiment, the rocker arm 6 includes a first arm 22, a second arm 23, a third connecting portion 24, and a fourth connecting portion 25, where the first ends of the first arm 22 and the second arm 23 are integrally formed, and the axes of the first arm 22 and the second arm 23 form an included angle of 70-90 degrees, for example, 75, 80, 85 degrees; further, the length of the first force arm 22 is greater than the length of the second force arm 23, and the third connecting portion 24 is located at the connection position of the first force arm 22 and the second force arm 23, that is, the third connecting portion 24 and the wheel carrier 1 form a rotational connection through a pin shaft; the brake pin 8 is fixed at the second end of the second force arm 23 in an integrally formed manner, the fourth connecting portion 25 is fixed at the second end of the first force arm 22, the fourth connecting portion 25 is in transmission connection with the driving mechanism 3, the fourth connecting portion 25 in this embodiment is connected with the first guide post 14 through a pin shaft, and a chute is further arranged on the fourth connecting portion 25 in this embodiment, that is, the fourth connecting portion 25 can slide a certain distance relative to the first guide post 14 in addition to rotating a certain angle relative to the first guide post 14. Because the length of the first force arm 22 is greater than that of the second force arm 23, and the third connecting portion 24 is located at the connection position of the first force arm 22 and the second force arm 23, the rocker arm 6 can form a labor-saving lever, that is, after the driving mechanism 3 inputs relatively small moment to the first force arm 22, relatively large moment can be output on the second force arm 23, and further, the biting force of the braking pin 8 and the first tooth slot 9 can be ensured, that is, the reliable braking of the travelling wheel is ensured. Further, after the axes of the first force arm 22 and the second force arm 23 form an included angle, the length of the first force arm 22 is greater than that of the second force arm 23, so that the gravity center on the rocker arm is biased to the first force arm 22, that is, the first force arm 22 sags due to gravity and drives the second force arm 23 to lift upwards, and the brake pin 8 can be clamped in the first tooth slot 9; that is, in an extreme case, after the driving mechanism 3 loses control over the rocker arm 6, the walking wheel can still be in a braking state, so that the nursing bed is in a stable state, that is, the safety of the walking wheel in use is improved.

Compared with the prior art, the utility model has the following main beneficial effects: through set up the actuating mechanism mutually supporting with brake mechanism on the walking wheel, after removing the drive force of exerting on actuating mechanism, actuating mechanism is from resetting and drive brake mechanism stops the wheel body, that is to say, can accomplish the braking or the release braking to the walking wheel at the single control action of walking wheel to the convenience of walking wheel control in the use has been improved, the convenience that has improved the walking wheel and has used.

In this specification, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description of the terms "preferred embodiment," "further embodiment," "other embodiments," or "specific examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (9)

1. A walking wheel, characterized in that: the wheel body is connected with the wheel frame, the wheel body can rotate relative to the wheel frame, the driving mechanism and the braking mechanism are both arranged on the wheel frame and are in transmission connection with the braking mechanism, after driving force is applied to the driving mechanism, the driving mechanism drives the braking mechanism to release braking of the wheel body, or after the driving force applied to the driving mechanism is removed, the driving mechanism self-resets and drives the braking mechanism to brake the wheel body;

the steering mechanism is connected with the wheel frame, the wheel frame can rotate relative to the steering mechanism, and the driving mechanism is matched with the steering mechanism;

after the driving force is applied to the driving mechanism, the driving mechanism releases the locking of the steering mechanism, or after the driving force applied to the driving mechanism is removed, the driving mechanism locks the wheel frame and the steering mechanism;

the driving mechanism comprises a first guide column, a second guide column, a first elastic piece and a second elastic piece, wherein the first guide column is in sliding connection with the wheel frame, one end of the first elastic piece is abutted against the wheel frame, the other end of the first elastic piece is abutted against the first end of the first guide column, the second end of the first guide column is abutted against the first end of the second guide column, the second end of the second guide column is in sliding connection with the second connecting part of the steering mechanism, one end of the second elastic piece is abutted against the second guide column, and the other end of the second elastic piece is abutted against the wheel frame;

the end face of the first end of the first guide post is also provided with a plurality of second tooth grooves, the second tooth grooves are arranged around the axial lead of the first guide post, and the end face of the first end of the second guide post is provided with convex teeth matched with the second tooth grooves;

after the driving force is applied to the driving mechanism, the driving mechanism drives and enables the brake mechanism to release the brake of the wheel body, the steering mechanism can drive the second guide post to rotate relative to the first guide post,

or after the driving force applied to the driving mechanism is removed, the driving mechanism is self-reset and drives the brake mechanism to brake the wheel body, and the second guide post and the first guide post are locked and the wheel frame is in a non-rotatable state relative to the cover plate of the steering mechanism;

the driving mechanism further comprises a stay wire, one end of the stay wire is rotationally connected with the second guide post, the second end of the stay wire is used for being connected with external equipment, and the stay wire is used for driving and enabling the second guide post and enabling the convex teeth to be separated from the second tooth grooves on the first guide post relative to the axial direction of the first guide post or the second guide post.

2. The road wheel of claim 1, wherein: the brake mechanism comprises a rocker arm, a brake drum and a brake pin, the rocker arm is rotationally connected with the wheel frame, the brake pin is fixed at one end of the rocker arm, the other end of the rocker arm is connected with the driving mechanism, the brake drum is fixed on the wheel body, and when the brake mechanism is in a brake state, the brake pin is abutted to the inner wall of the brake drum.

3. The road wheel of claim 2, wherein: the side wall of the brake drum along the circumferential direction is also provided with a plurality of first tooth grooves, and when the brake mechanism is in a brake state, the brake pin is clamped in any one of the first tooth grooves.

4. The road wheel of claim 1, wherein: the steering mechanism comprises a first connecting part and a second connecting part, the first connecting part is fixedly connected with the second connecting part, the first connecting part is used for connecting external equipment, the second connecting part is connected with the wheel frame, and the second connecting part is connected with the driving mechanism.

5. The road wheel of claim 4, wherein: and the stay wire penetrates through the cover plate, the first connecting part and the second connecting part relative to the axial direction of the steering mechanism.

6. The road wheel of claim 5, wherein: the elastic coefficient of the second elastic piece is larger than that of the first elastic piece, after the driving force applied to the driving mechanism is removed, the second elastic piece pushes and enables the second guide post to be abutted to the first guide post, the second guide post is meshed with the convex teeth on the first guide post and the second tooth grooves, and the wheel frame is locked with the steering mechanism.

7. The road wheel of any one of claims 3-5 wherein: the wheel body is provided with two, the wheel body is installed respectively in the both sides of wheel carrier, just the wheel body with be formed with the accommodation chamber between the wheel carrier, actuating mechanism with brake mechanism all is located the accommodation intracavity.

8. The road wheel of claim 7, wherein: each wheel body is provided with a brake drum, and brake pins matched with the brake drums are fixed on two sides of a rocker arm of the brake mechanism.

9. The road wheel of claim 2, wherein: the rocker arm comprises a first force arm, a second force arm, a third connecting part and a fourth connecting part, wherein the first end of the first force arm is fixedly connected with the first end of the second force arm, an included angle is formed between the axes of the first force arm and the second force arm, and the length of the first force arm is larger than that of the second force arm;

the third connecting portion is located at the joint of the first force arm and the second force arm, the brake pin is fixed at the second end of the second force arm, the fourth connecting portion is fixed at the second end of the first force arm, and the fourth connecting portion is in transmission connection with the driving mechanism.