CN214028055U - Universal wheel and robot - Google Patents

Abstract

The utility model discloses a universal wheel and a robot, which comprises a movable bracket, wheels, a bearing seat and a snail nail; the bearing block is arranged in the top end of the movable support, the wheel is rotatably arranged at the bottom end of the movable support, the worm nail penetrates through the bearing block and the movable support and is used for being connected with the outside, a thrust bearing is arranged between the bearing block and the bottom plate, the thrust bearing is sleeved on the outer side of the worm nail, one end of the thrust bearing is abutted to the bearing block, and the other end of the thrust bearing penetrates out of the movable support. Compared with the prior art, beneficial effect lies in: through set up a deep groove ball bearing and set up thrust bearing on deep groove ball bearing in movable support's inside, promote the axial and radial atress performance of universal wheel, the wheel adopts rubber to make, improves the anti-vibration and the anti-torque performance of universal wheel to promote the life of universal wheel.

Description

Universal wheel and robot

[ technical field ] A method for producing a semiconductor device

The utility model relates to an universal wheel technical field, specificly relate to an universal wheel and robot.

[ background of the invention ]

The universal wheel is a so-called movable caster, the structure of the universal wheel allows 360-degree horizontal rotation, the machine provided with the universal wheel can walk in any horizontal direction, the universal wheel adopts an eccentric principle, namely, a rotating shaft of the wheel deviates from a central line of a wheel carrier bearing, so that the wheel can turn at will, due to the structure, the eccentricity of a wheel shaft inevitably causes the reduction of the axial bearing capacity and the radial bearing capacity of the wheel, the service life is short, and the universal wheel is a ubiquitous problem at present.

In view of the above, it is desirable to provide a universal wheel and a robot to overcome the above-mentioned drawbacks.

[ Utility model ] content

The utility model aims at providing an universal wheel and robot aims at promoting the anti-vibration and the anti-torque performance of universal wheel, improves the axial and the radial atress performance of universal wheel to improve the life of universal wheel.

In order to achieve the purpose, the utility model provides a universal wheel and a robot, which is characterized in that the universal wheel and the robot comprise a movable bracket, wheels, a bearing seat and a snail nail; the bearing block is arranged in the top end of the movable support, the wheel is rotatably arranged at the bottom end of the movable support, the worm nail penetrates through the bearing block and the movable support and is used for being connected with the outside, a thrust bearing is arranged between the bearing block and the bottom plate, the thrust bearing is sleeved on the outer side of the worm nail, one end of the thrust bearing is abutted to the bearing block, and the other end of the thrust bearing penetrates out of the movable support.

In a preferred embodiment, a bottom plate is further arranged outside the top end of the movable support and used for being installed and fixed with the outside, and the worm nail penetrates through the bottom plate and connects the movable support, the bearing seat and the bottom plate together through riveting.

In a preferred embodiment, a dust cover is further arranged between the movable support and the bottom plate.

In a preferred embodiment, the number of the wheels is two, the two wheels are arranged in the bottom end of the movable support side by side, and two ends of the cross section of each wheel are arc-shaped.

In a preferred embodiment, the wheel is made of rubber, and two side surfaces of the wheel are provided with anti-winding covers.

In a preferred embodiment, the bearing housing comprises: the worm nail comprises a bearing sleeve and a deep groove ball bearing, wherein the bearing sleeve is fixedly connected with the movable support, the deep groove ball bearing is fixed in the bearing sleeve, and one end of the worm nail penetrates out of the center of the deep groove ball bearing and the bearing sleeve.

In a preferred embodiment, the thrust bearing is provided with a boss extending horizontally outwards and abutting against one end edge of the bearing seat.

Compared with the prior art, the utility model discloses universal wheel structure, beneficial effect lies in: set up a deep groove ball bearing and set up thrust bearing on deep groove ball bearing through the inside at the movable support, increase deep groove ball bearing's area of contact, promote the axial and radial atress performance of universal wheel, the wheel adopts rubber to make, improves the anti-vibration and the anti-torque performance of universal wheel to promote the life of universal wheel.

[ description of the drawings ]

Fig. 1 is a perspective view of the universal wheel structure provided by the present invention.

Fig. 2 is a sectional view taken along line a-a in fig. 1.

In the figure:

10. a movable support; 101. a dust cover; 11. a bearing seat; 111. a bearing housing; 112. a deep groove ball bearing; 12. a wheel; 121. an anti-wind cover; 13. a snail nail; 14. a thrust bearing; 15. a base plate.

[ detailed description ] embodiments

In order to make the objects, technical solutions and advantageous technical effects of the present invention more clearly understood, the present invention is further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration only and not by way of limitation.

Referring to fig. 1 to 2, the present invention provides a universal wheel structure 100, which is mainly used to improve the anti-vibration and anti-torque performance of the universal wheel, and improve the axial and radial stress performance of the universal wheel, thereby improving the service life of the universal wheel.

In an embodiment of the present invention, the universal wheel structure 100 includes: the device comprises a movable bracket 10, a wheel 12, a bearing seat 11 and a worm nail 13; in the top of movable support 10 was located to bearing frame 11, wheel 12 rotated the bottom of locating movable support 10, and snail nail 13 passed bearing frame 11 and movable support 10 for with external connection, be equipped with thrust bearing 14 on the bearing frame 11, thrust bearing 14 cover establish with the snail nail 13 outside, thrust bearing 14's one end and bearing frame 11 butt, the other end is worn out movable support 10.

Furthermore, a clamping groove (not shown in the figure) is arranged in the top of the movable support 10, a through hole (not shown in the figure) is arranged in the middle of the top of the movable support, the bearing seat 11 is arranged in the clamping groove in the movable support 10 in a riveting mode, so that the movable support 10 can drive the bearing seat 11 to rotate when rotating, the wheel 12 is rotatably arranged at the bottom end of the movable support 10 through a screw rod and a self-locking nut, the nut is prevented from being separated along with the rotation of the wheel 12, one end of the worm 13 penetrates through the bearing seat 11 and the top of the movable support 10 and is exposed outside, still be equipped with a thrust bearing 14 on bearing frame 11, the through-hole at the one end of thrust bearing 14 through movable support 10 top is worn out movable support 10, and thrust bearing 14's the other end and bearing frame 11 butt prolong the axial area of contact of bearing frame 11 to improve the universal wheel at axial and radial bearing capacity, promote the life of universal wheel.

It should be noted that the diameter of the through hole at the top of the movable bracket 10 needs to be larger than the maximum diameter of the thrust bearing, so that the thrust bearing 14 passes through the top of the movable bracket 10 and has a gap with the movable bracket 10, and the movable bracket 10 does not generate friction with the thrust bearing 14 when rotating.

In this embodiment, a bottom plate 15 is further disposed outside the top end of the movable bracket 10 for installation and fixation with the outside, and the worm 13 penetrates through the bottom plate 15 and connects the movable bracket 10, the bearing seat 11 and the bottom plate 15 together by riveting.

Further, a bottom plate 15 is arranged at the top of the movable support 10, the bottom plate 15 is used for being fixedly installed with the outside, and the worm 13 penetrates through the bearing seat 11 and one end of the movable support 10, penetrates through the bottom plate 15, and is fixed with the bottom plate 15 through a press riveting mode, so that the movable support 10 and the bearing seat 11 are fixedly installed with the outside object.

In this embodiment, the thrust bearing 14 is provided with a horizontally extending outward boss abutting against one end edge of the bearing seat 11.

Further, thrust bearing 14 has increased the axial area of contact of bearing frame 11, for promoting the radial area of contact of bearing frame 11, is equipped with the boss that outside level extended at thrust bearing 14 butt one end edge of bearing frame 11 to increase with bearing frame 11 at radial ascending area of contact, promote radial bearing capacity.

The thrust bearing 14 is made of a rigid material, such as iron or steel, having a good bearing capacity.

In the present embodiment, the bearing housing 11 includes: the bearing sleeve 111 and the deep groove ball bearing 112, the bearing sleeve 111 is fixedly connected with the movable support 10, the deep groove ball bearing 112 is fixed in the bearing sleeve 111, and one end of the worm 13 penetrates through the center of the deep groove ball bearing 112 and the bearing sleeve 111.

Further, the bearing seat 11 is divided into a bearing sleeve 111 and a deep groove ball bearing 112, wherein the deep groove ball bearing 112, also called a single-row radial ball bearing, can bear radial load, and can also bear radial load and axial load simultaneously by the deep groove ball bearing 112. When it is subjected to only radial loads, the contact angle is zero. When the deep groove ball bearing 112 has a large radial clearance, the deep groove ball bearing has the performance of an angular contact bearing, can bear a large axial load, and has a small friction coefficient and a high limit rotating speed of the deep groove ball bearing 112; the bearing sleeve 111 is horizontally embedded into the clamping groove of the movable support 10, the deep groove ball bearing 112 is fixed in the bearing sleeve 111, and the worm 13 penetrates through the axis of the deep groove ball bearing 112 in an interference fit mode, so that the outer ring of the deep groove ball bearing 112 is not rotated, and the movable support 10 connected with the deep groove ball bearing 112 can rotate.

In this embodiment, a dust cover 101 is further disposed between the movable bracket 10 and the bottom plate 15.

Further, for preventing when the universal wheel uses, the dust gets into in the bearing frame 11 from the top of movable support 10 and the clearance department between the thrust bearing 14, influence the rotation of bearing shaft, be equipped with a shield 101 on movable support 10 and between bottom plate 15, this shield 101 and bottom plate 15 fixed connection, shield 101 keeps away from the one end of bottom plate 15 and the interval setting of movable support 10, avoid shield 101 and movable support 10 contact, influence the rotation of movable support 10, can block outside most dust simultaneously.

In this embodiment, two wheels 12 are provided and are arranged side by side in the bottom end of the movable bracket 10, and both ends of the cross section of the wheels 12 are arc-shaped.

Further, wheel 12 is equipped with two, thereby increase the stationarity of universal wheel, two wheels 12 interval sets up the bottom at movable support 10 side by side, be equipped with two because of wheel 12, make the stationarity increase, but also make the area of contact of wheel 12 and ground enlarge consequently, lead to also increasing with the friction on ground, for reducing the area of contact of wheel 12 and ground, reduce the coefficient of friction with ground, promote the fluency of wheel 12 when walking and rotation, the periphery of wheel 12, the contact surface of wheel 12 and ground contact adopts circular-arc setting promptly, thereby reduce the area of contact of wheel 12 and ground, reduce the resistance of wheel 12 when walking and rotation.

In this embodiment, the wheel 12 is made of rubber, and both sides of the wheel 12 are provided with anti-winding covers.

Furthermore, the wheels 12 are made of rubber, and the rubber has good elasticity and a good damping effect, so that equipment using the universal wheel can not transmit vibration to the equipment even when walking on uneven roads, thereby playing a role in protecting the equipment, meanwhile, the rubber also has good wear resistance, the service life of the wheels 12 is prolonged, and the wheels 12 do not need to be frequently replaced; in order to avoid the occurrence of the situation, the anti-winding covers are arranged on the axle centers of the two sides of each wheel 12, so that the hairs, the lines and the dust are blocked outside the anti-winding covers, and the normal operation of the wheels 12 is guaranteed.

During the equipment, install deep groove ball bearing 112 in bearing housing 111 earlier, press the bearing housing 111 in the draw-in groove of movable support 10 again, place thrust bearing 14 on deep groove ball bearing 112 afterwards, wear to locate the center of bearing frame 11 with worm 13 again, installation shield 101, be connected assembled movable support 10 and bottom plate 15, fix bottom plate 15 on worm 13 through the mode of riveting, the installation is prevented twining the lid and is installed a pair of wheel 12 in the bottom of movable support 10 through screw rod and self-locking nut on the wheel 12, so far the universal wheel, the equipment finishes.

To sum up, the utility model provides an universal wheel structure 100 sets up a deep groove ball bearing 112 and sets up thrust bearing 14 on deep groove ball bearing 112 through the inside at movable support 10, promotes the axial and radial atress performance of universal wheel, and wheel 12 adopts rubber to make, improves the anti-vibration of universal wheel and anti-torque performance to promote the life of universal wheel.

The invention is not limited solely to that described in the specification and the embodiments, and additional advantages and modifications will readily occur to those skilled in the art, and it is not intended to be limited to the specific details, representative apparatus, and illustrative examples shown and described herein, without departing from the spirit and scope of the general concept as defined by the appended claims and their equivalents.

Claims (7)

1. The universal wheel is characterized by comprising a movable bracket, a wheel, a bearing seat and a worm nail; the bearing block is arranged in the top end of the movable support, the wheel is rotatably arranged at the bottom end of the movable support, the worm nail penetrates through the bearing block and the movable support and is used for being connected with the outside, a thrust bearing is arranged on the bearing block and sleeved outside the worm nail, one end of the thrust bearing is abutted to the bearing block, and the other end of the thrust bearing penetrates out of the movable support.

2. The universal wheel according to claim 1, wherein a bottom plate is further arranged outside the top end of the movable support for being installed and fixed with the outside, and the worm nail penetrates through the bottom plate and connects the movable support, the bearing seat and the bottom plate together through riveting.

3. The universal wheel according to claim 2, wherein a dust cover is further provided between the movable bracket and the bottom plate.

4. The universal wheel as claimed in claim 1, wherein there are two wheels, which are arranged side by side in the bottom end of the movable support, and the two ends of the cross section of the wheel are arc-shaped.

5. The universal wheel according to claim 1, wherein the wheel is made of rubber, and both sides of the wheel are provided with anti-winding covers.

6. The universal wheel of claim 1, wherein the bearing housing comprises: the worm nail comprises a bearing sleeve and a deep groove ball bearing, wherein the bearing sleeve is fixedly connected with the movable support, the deep groove ball bearing is fixed in the bearing sleeve, and one end of the worm nail penetrates out of the center of the deep groove ball bearing and the bearing sleeve.

7. A robot, characterized in that, the robot includes the main body of the robot and locates at a plurality of universal wheels of the robot main body bottom, the universal wheel is as set forth in any one of claims 1-6.

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