CN115817069A - Universal wheel assembly and mounting frame - Google Patents

Abstract

The invention is suitable for the technical field of universal wheels, and provides a steering wheel component and an installation frame. The universal wheel assembly includes: the support piece is used for supporting the external connection piece, and the wheel carrier is rotatably connected with the support piece; the two universal wheels are connected to the wheel carrier and are arranged at intervals; the two universal wheels are separated by a preset distance, and the two universal wheels are positioned at different heights when the wheel frame rotates relative to the supporting piece. According to the invention, the universal wheels can always keep normal contact with the ground, so that a good shock absorption effect is achieved, shock mitigation within a certain height range is realized, and the overall operation stability is improved.

Description

Universal wheel assembly and mounting frame

Technical Field

The invention belongs to the technical field of universal wheels, and particularly relates to a universal wheel assembly and an installation frame.

Background

The universal wheel can rotate horizontally by 360 degrees in dynamic load or static load, meets the use requirement of walking direction adjustment, and is widely applied to equipment such as a luggage box, a trolley or a sweeping robot.

In the related art, the universal wheel is usually only provided with one universal wheel, the damping effect is poor, and when obstacles or low-lying are crossed, the generated vibration is large, so that the overall running stability is influenced.

Disclosure of Invention

In view of this, embodiments of the present invention provide a universal wheel assembly and an installation frame, so as to solve the problem that the overall operation stability is affected due to poor damping effect.

In order to solve the above problems, the technical solution of the embodiment of the present invention is implemented as follows:

a universal wheel assembly comprising: the support piece is used for supporting the external connection piece, and the wheel carrier is rotatably connected with the support piece; the two universal wheels are connected to the wheel carrier and are arranged at intervals; the two universal wheels are separated by a preset distance, and the two universal wheels are positioned at different heights when the wheel frame rotates relative to the supporting piece.

In some embodiments, the wheel carriage comprises: the universal wheel comprises a body, wherein two ends of the body are respectively provided with a first connecting structure, and two universal wheels are respectively connected with the corresponding first connecting structures; the connecting lug is arranged in the middle of the body, a second connecting structure is arranged on the connecting lug, and the supporting piece is connected to the second connecting structure.

In some embodiments, the first connecting structure is a mounting hole, the universal wheel includes a wheel fork and a road wheel movably mounted on the wheel fork, and the wheel fork is provided with a mounting shaft, and the mounting shaft is inserted in the first connecting structure.

In some embodiments, the second connecting structure is a shaft hole, a rotating shaft passes through the shaft hole, and the supporting member is connected to the rotating shaft.

In some embodiments, the wheel carriage comprises: the two connecting rods are arranged in parallel, a first connecting structure is respectively arranged at two ends of each connecting rod, and a second connecting structure for connecting the supporting pieces is arranged in the middle of each connecting rod; two connecting blocks are arranged and are respectively connected to two ends of the connecting rod, an accommodating groove and a third connecting structure are formed in one end of each connecting block, and a fourth connecting structure for connecting the universal wheels is arranged at the other end of each connecting block; the two ends of the connecting rod are respectively located in the corresponding accommodating grooves, and the first connecting structure is connected with the third connecting structure.

In some embodiments, the first connecting structure, the second connecting structure and the third connecting structure are through holes, a first connecting shaft penetrates between the first connecting structure and the third connecting structure, and a second connecting shaft for the connection of the supporting member penetrates in the second connecting structure.

In some embodiments, the fourth connecting structure is a connecting hole, the universal wheel includes a wheel fork and a traveling wheel movably mounted on the wheel fork, and a mounting shaft is disposed on the wheel fork and inserted into the fourth connecting structure.

In some embodiments, the supporting member includes a rod body and a first connecting sleeve connected to one end of the rod body, and the first connecting sleeve is movably connected to the wheel frame.

In some embodiments, the supporting member further includes a second connecting sleeve for connecting with an external member, and the rod body is disposed between the first connecting sleeve and the second connecting sleeve.

The embodiment of the invention also provides an installation rack, which comprises: the frame body comprises a bracket and a supporting wheel connected to the bottom of the bracket; in the above universal wheel assembly, the support member is connected to the support.

The universal wheel assembly provided by the embodiment of the invention comprises a wheel frame, a supporting piece and a universal wheel. Through being provided with two with the universal wheel, two universal wheels are connected on the wheel carrier to the interval is provided with between two universal wheels and predetermines the distance. Meanwhile, the supporting piece and the wheel frame are also in rotary connection. In this way, two universal wheels capable of rotating circularly are arranged, and the supporting piece and the wheel frame can also be mutually swung to adjust the position. Therefore, when the walking mechanism crosses obstacles or low places, the walking direction can be automatically adjusted through rotation of the universal wheels, and the position swing between the support piece and the wheel carrier is combined, so that the two universal wheels are located at different heights, the universal wheels can be always kept in normal contact with the ground, the damping effect is achieved, the vibration can be reduced within a certain height range, the overall operation stability is improved, and the use requirement is met.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic diagram of a first construction of a universal wheel assembly provided by an embodiment of the present invention;

FIG. 2 is a schematic diagram of a second construction of a universal wheel assembly provided by an embodiment of the present invention;

FIG. 3 is an exploded view of a first construction of a universal wheel assembly provided by an embodiment of the present invention;

FIG. 4 is an exploded view of a second construction of a universal wheel assembly provided by embodiments of the present invention;

fig. 5 is a first structural schematic diagram of a mounting bracket according to an embodiment of the invention;

fig. 6 is a schematic structural diagram of a second mounting frame according to an embodiment of the present invention.

Description of reference numerals:

1. a universal wheel assembly; 11. a wheel carrier; 111a, a body; 112a, a connecting lug; 113a, a first connecting structure; 114a, a second connecting structure; 115a, a rotating shaft;

111b, a connecting rod; 112b, a first connecting structure; 113b, a second connecting structure; 114b, a connecting block; 115b, accommodating grooves; 116b, a third connecting structure; 117b, a fourth connecting structure; 118b, a first connecting shaft; 119b and a second connecting shaft;

12. a support member; 121. a rod body; 122. a first connecting sleeve; 123. a second connecting sleeve; 13. a universal wheel; 131. a wheel fork; 132. a traveling wheel; 133. installing a shaft;

2. a mounting frame; 21. a frame body; 211. a support; 2111. a first support leg; 2112. a second support leg; 212. a support wheel; 213. a transition rod; 214. a connecting rod; 215. a bi-directional shock absorber.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The individual features described in the embodiments can be combined in any suitable manner without departing from the scope, for example different embodiments and aspects can be formed by combining different features. In order to avoid unnecessary repetition, various possible combinations of the specific features of the invention will not be described further.

It should be noted that the terms of orientation such as left, right, up and down in the embodiments of the present invention are only relative to each other or are referred to the normal use state of the product, and should not be considered as limiting.

As shown in fig. 1 and fig. 2, the universal wheel assembly 1 provided in the embodiment of the present invention may be used in an apparatus (such as a robot or a luggage compartment, etc.) that needs to adjust a walking direction arbitrarily when a position is moved. In the embodiment of the present invention, for convenience of understanding, the universal wheel assembly 1 is applied to the camera robot for illustration, and the universal wheel assembly 1 is used to improve the position stability of the camera robot during walking, and it should be understood that the application range of the universal wheel assembly 1 is not limited.

As shown in fig. 1 and 2, in some embodiments, the universal wheel assembly 1 includes a wheel frame 11, a support 12, and a universal wheel 13. The supporting member 12 is connected to the wheel frame 11 for supporting an external member (such as a camera), and the supporting member 12 is rotatably connected to the wheel frame 11, so that the supporting member 12 and the wheel frame 11 can rotate relative to each other, and the relative position therebetween can be adjusted as required. In the embodiment of the present invention, two universal wheels 13 are provided, two universal wheels 13 are fixedly or movably connected to the wheel frame 11, the universal wheels 13 can rotate circumferentially relative to the wheel frame 11, and the two universal wheels 13 are spaced apart by a predetermined distance. Like this, through being provided with two universal wheels 13 to with the interval between two universal wheels 13 and be provided with predetermined distance, make two universal wheels 13 not in same position department, just can avoid two universal wheels 13 to collide with same barrier simultaneously, and can pass through the barrier smoothly after position adjustment. The universal wheel assembly 1 having such a configuration can adjust the traveling direction of the universal wheel 13 by its rotation when crossing an obstacle or a depression, and can go around the obstacle. Meanwhile, when the wheel frame 11 rotates relative to the supporting part 12, the two universal wheels 13 are positioned at different heights, so that at least one of the two universal wheels 13 which are arranged at intervals can always keep normal contact with the ground when the two universal wheels 13 walk on different surfaces (relative horizontal planes), the jumping in the walking process is avoided, the shock absorption effect is achieved, the shock can be relieved within a certain height range, and the overall operation stability is improved,

in the above, a preset distance is set between the two universal wheels 13 at an interval, and the actual length of the preset distance is slightly larger than the average size of the obstacles or the depressions existing in the practical application environment, so that the universal wheels 13 can smoothly cross the obstacles or the depressions. Such as setting the preset distance to 15-25 cm. Meanwhile, the position of the support 12 connected with the wheel frame 11 is located at the midpoint of the two universal wheels 13, so that the two universal wheels 13 can be basically balanced in stress.

As shown in fig. 1 and 3, in some embodiments, the wheel frame 11 includes a body 111a and a connection lug 112a. The two ends of the main body 111a are respectively provided with a first connecting structure 113a, and the two universal wheels 13 are respectively connected with the corresponding first connecting structures 113 a. The connecting lug 112a is disposed in the middle of the body 111a, the connecting lug 112a is opened with a second connecting structure 114a, and the supporting member 12 is connected to the second connecting structure 114a. Specifically, the connecting lug 112a and the body 111a may be integrally formed, or may be fixedly connected by welding or a screw-type fastener. The two universal wheels 13 are respectively connected with the corresponding first connecting structures 113a to realize movable connection on the body 111 a. The supporting member 12 is connected to the second connecting structure 114a to realize the movable connection with the main body 111a, so that the main body 111a and the supporting member 12 can swing relatively to each other, thereby achieving the purpose of adjusting the contact angle between the universal wheel 13 and the ground.

As shown in fig. 1 and 3, in some embodiments, the first connecting structure 113a is provided as a mounting hole, and the universal wheel 13 includes a fork 131 and a road wheel 132 movably mounted on the fork 131, the fork 131 is provided with a mounting shaft 133, and the mounting shaft 133 is inserted into the first connecting structure 113 a. In this way, the universal wheel 13 and the wheel carrier 11 are movably connected to each other, and the fork 131 can be rotated circumferentially about the mounting shaft 133. It is understood that in other embodiments, the first connecting structure 113a may be configured as an axle structure, and then the fork 131 is configured with a hole structure, and the movable connection between the universal wheel 13 and the wheel frame 11 can also be realized through the matching connection of the axle structure and the hole structure.

As shown in fig. 1 and 3, in some embodiments, the second connecting structure 114a is a shaft hole, a rotating shaft 115a is disposed in the shaft hole, and the supporting member 12 is connected to the rotating shaft 115a. With the arrangement, the whole structure is simple, and the movable connection between the support 12 and the wheel frame 11 can be reliably realized. Of course, it is understood that the second connecting structure 114a may be directly provided with a shaft structure, and the supporting member 12 may be provided with a hole structure capable of being matched and connected with the shaft structure.

As shown in fig. 2 and 4, in some embodiments, the wheel frame 11 may be provided as another structure, and the wheel frame 11 of the structure includes a connection rod 111b and a connection block 114b. Two connecting rods 111b are arranged in parallel, and first connecting structures 112b are respectively arranged at two ends of the connecting rods 111 b. Meanwhile, a second connection structure 113b to which the support 12 is connected is provided at the middle of the connection rod 111 b. Two connection blocks 114b are also provided and are respectively used for connecting both ends of the connection rod 111 b. Specifically, one end of the connecting block 114b close to the connecting rod 111b is provided with a receiving groove 115b and a third connecting structure 116b, the other end of the connecting block 114b is provided with a fourth connecting structure 117b for the universal wheel 13 to connect, then, two ends of the connecting rod 111b are respectively located in the corresponding receiving grooves 115b, and the first connecting structure 112b and the third connecting structure 116b are connected to each other, so that the two connecting blocks 114b are respectively and correspondingly connected to two ends of the connecting rod 111 b. With this arrangement, the second connecting structure 113b is used to movably connect the support 12 and the wheel frame 11, and a parallelogram structure is formed between the two connecting rods 111b and the two connecting blocks 114b. With this structure, the wheel frame 11 can swing with the supporting member 12 as a supporting point, and the connecting block 114b and the two connecting rods 111b can rotate with each other. Therefore, the universal wheel assembly 1 has multiple degrees of freedom, and in use, the universal wheels 13 can always keep normal contact with the ground through automatic position adjustment (such as inclination) of each movable connection part, sudden jump or falling empty can not occur, a good damping effect is achieved, and the stability of movement is ensured. According to the connection requirement, a receiving groove 115b is opened at one end of the connection block 114b, and the receiving groove 115b extends along the length direction of the connection block 114b by a proper length to be able to receive the two connection rods 111b, and a third connection structure 116b is provided on the side wall of the receiving groove 115b to be able to be coupled with the corresponding connection rod 111b in a matching manner.

As shown in fig. 2 and 4, in this structure, the first connection structure 112b, the second connection structure 113b and the third connection structure 116b may be disposed as through holes, and a first connection shaft 118b is disposed between the first connection structure 112b and the third connection structure 116 b. When the third connecting structure 116b is provided as a through hole, the third connecting structure 116b penetrates into the receiving groove 115 b. Thus, the movable connection of the connecting block 114b and the connecting rod 111b is realized by the connection action of the first connecting shaft 118b. Similarly, a second connecting shaft 119b for connecting the supporting member 12 is inserted into the second connecting structure 113b, so that the supporting member 12 and the connecting rod 111b are movably connected through the second connecting shaft 119 b. Specifically, since the two connection rods 111b are provided, and both the two connection rods 111b are connected to the support 12. Thus, two second connecting shafts 119b are provided to achieve the movable connection of the two connecting rods 111b with the support 12.

As shown in fig. 2 and 4, in some embodiments, the fourth connecting structure 117b is a connecting hole, the universal wheel 13 includes a fork 131 and a road wheel 132 movably mounted on the fork 131, a mounting shaft 133 is disposed on the fork 131, and the mounting shaft 133 is inserted into the fourth connecting structure 117 b. With the arrangement, the whole structure is simple, and the movable connection between the universal wheel 13 and the connecting block 114b can be reliably realized. Of course, it is understood that the fourth connecting structure 117b may be directly provided with a shaft structure, and the fork 131 is provided with a hole structure capable of being matched and connected with the shaft structure, so that the movable connection between the universal wheel 13 and the connecting block 114b can be realized.

As shown in fig. 1 and 2, in some embodiments, the supporting element 12 includes a rod body 121 and a first connecting sleeve 122 connected to one end of the rod body 121, and the first connecting sleeve 122 is movably connected to the wheel frame 11. Set up like this, body of rod 121 is used for supporting external piece to under the connection of first connecting sleeve 122, body of rod 121 can swing for wheel carrier 11, has realized the adjustment of walking in-process position, with the demand that has satisfied external piece steady movement. Moreover, the number of the rod bodies 121 can be selected according to actual requirements, and can be one or two or other numbers, so that the actual supporting requirements are met.

As shown in fig. 1 and 2, in some embodiments, the supporting member 12 is configured to further include a second connecting sleeve 123 for connecting with an external member, and the rod body 121 is disposed between the first connecting sleeve 122 and the second connecting sleeve 123. Like this, through being provided with second adapter sleeve 123, improved the convenience of being connected with external piece.

The universal wheel assembly 1 provided by the embodiment of the invention is provided with two universal wheels 13 capable of rotating circumferentially, and the supporting piece 12 and the wheel carrier 11 can also be mutually swung to adjust the position. Therefore, when obstacles or low-lying are crossed, the walking direction can be automatically adjusted through rotation of the universal wheel 13, the universal wheel 13 can be always kept in normal contact with the ground by combining position swing between the support piece 12 and the wheel carrier 11, the shock absorption effect is achieved, the shock can be relieved within a certain height range, the overall running stability is improved, and the use requirement is met.

As shown in fig. 5 and fig. 6, an embodiment of the present invention further provides a mounting bracket 2, where the mounting bracket 2 may be used on a device of a photographing robot, and a camera device for photographing is fixedly mounted on the mounting bracket 2. The mounting frame 2 comprises a frame body 21 and the universal wheel assembly 1. The frame body 21 comprises a bracket 211 and a supporting wheel 212 connected to the bottom of the bracket 211, and the supporting wheel 212 rotates to drive the bracket 211 to move and connect the supporting member 12 in the universal wheel assembly 1 with the bracket 211. Specifically, the bracket 211 includes first and second support legs 2111 and 2112 that are spaced and obliquely disposed, and support wheels 212 are respectively connected to the bottom ends of the first and second support legs 2111 and 2112, and the support member 12 is obliquely connected to the upper ends of the first and/or second support legs 2111 and 2112. Thus, the first support leg 2111, the second support leg 2112 and the support member 12 combine to form a structure with the upper end closed and the bottom end diffused to form three support points. Thus, the installation and fixation of the external piece can be realized, and the external piece can move stably by combining the rotation of the supporting wheel 212 and the universal wheel 13.

Specifically, as shown in fig. 5 and 6, in some embodiments, transition bars 213 are provided in the areas between the first and second support legs 2111, 2112 and the support 12, the transition bars 213 being spaced from the first and second support legs 2111, 2112 and the support 12. And is adapted such that the first and second support legs 2111 and 2112, respectively, are connected to the transition bar 213 via the connecting rod 214. Meanwhile, a bidirectional shock absorber 215 is connected between the transition rod 213 and the support member 12, and the bidirectional shock absorber 215 has bidirectional shock absorption performance and can effectively reduce the shock generated in the walking process. Set up like this, not only improved 2 overall structure's of mounting bracket stability, mounting bracket 2 has good shock attenuation performance moreover, can further improve and use positional stability, has satisfied the user demand well in the use.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A universal wheel assembly, comprising:

a support member for supporting the external member;

the wheel carrier is rotatably connected with the supporting piece;

the two universal wheels are connected to the wheel carrier and are arranged at intervals;

the two universal wheels are separated by a preset distance, and the two universal wheels are positioned at different heights when the wheel frame rotates relative to the supporting piece.

2. The universal wheel assembly of claim 1, wherein said wheel carrier comprises:

the universal wheel comprises a body, wherein two ends of the body are respectively provided with a first connecting structure, and two universal wheels are respectively connected with the corresponding first connecting structures;

the connecting lug is arranged in the middle of the body, a second connecting structure is arranged on the connecting lug, and the supporting piece is connected to the second connecting structure.

3. The universal wheel assembly of claim 2, wherein said first attachment structure is a mounting hole, said universal wheel includes a wheel fork and a road wheel movably mounted on said wheel fork, said wheel fork having a mounting shaft thereon, said mounting shaft being inserted into said first attachment structure.

4. The universal wheel assembly as claimed in claim 2, wherein the second connecting structure is a shaft hole, a rotating shaft is disposed in the shaft hole, and the supporting member is connected to the rotating shaft.

5. The universal wheel assembly of claim 1, wherein said wheel carrier comprises:

the two connecting rods are arranged in parallel, a first connecting structure is respectively arranged at two ends of each connecting rod, and a second connecting structure for connecting the supporting pieces is arranged in the middle of each connecting rod;

two connecting blocks are arranged and are respectively connected to two ends of the connecting rod, an accommodating groove and a third connecting structure are formed in one end of each connecting block, and a fourth connecting structure for connecting the universal wheels is arranged at the other end of each connecting block;

the two ends of the connecting rod are respectively located in the corresponding accommodating grooves, and the first connecting structure is connected with the third connecting structure.

6. The universal wheel assembly according to claim 5, wherein the first connecting structure, the second connecting structure and the third connecting structure are through holes, a first connecting shaft is arranged between the first connecting structure and the third connecting structure in a penetrating manner, and a second connecting shaft for connecting the supporting member is arranged in the second connecting structure in a penetrating manner.

7. The universal wheel assembly as claimed in claim 5, wherein said fourth connecting structure is a connecting hole, said universal wheel comprises a wheel fork and a road wheel movably mounted on said wheel fork, said wheel fork is provided with a mounting shaft, and said mounting shaft is inserted into said fourth connecting structure.

8. The universal wheel assembly as claimed in any one of claims 1 to 7 wherein said support member comprises a rod and a first connecting sleeve connected to one end of said rod, said first connecting sleeve being movably connected to said wheel carrier.

9. The universal wheel assembly as claimed in claim 7, wherein said support member further comprises a second coupling sleeve for coupling with an external member, said shank being disposed between said first coupling sleeve and said second coupling sleeve.

10. A mount, comprising:

the frame body comprises a bracket and a supporting wheel connected to the bottom of the bracket;

the universal wheel assembly of any of claims 1 to 9, the support member being connected to the bracket.

Images