CN112172411A

CN112172411A - Universal caster

Info

Publication number: CN112172411A
Application number: CN202010989482.3A
Authority: CN
Inventors: 刘欣鑫; 杨帅
Original assignee: 刘欣鑫
Current assignee: Quzhou Sanmei Hardware Technology Co., Ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-01-05
Anticipated expiration: 2040-09-18
Also published as: CN112172411B

Abstract

The invention relates to the field of casters, in particular to a universal caster which comprises a caster main body, wherein a first rotating bearing is arranged at the lower end of the caster main body, a first bearing rotating roller is arranged on one side of the first rotating bearing, a second bearing rotating roller is arranged in the middle of the upper end of the caster main body, a second rotating bearing is arranged at the upper end of the second bearing rotating roller, a connecting frame is arranged at the upper end of the second rotating bearing, a connecting groove is formed in the inner side of the connecting frame, circular through holes are formed in the outer surface of the front end of the connecting frame and the outer surface of the front end of the connecting groove in a penetrating mode, a fixing clamp column is arranged in the inner side of each circular through hole in a penetrating mode, an iron wire is arranged at the upper end of the fixing clamp column in a penetrating mode. The universal caster can be replaced conveniently, and can be used more stably, so that a better use prospect is brought.

Description

Universal caster

Technical Field

The invention relates to the field of casters, in particular to a universal caster.

Background

The casters are a general term and comprise movable casters and fixed casters, the movable casters are also called universal casters, the structure of the casters allows three hundred and sixty degrees of rotation, the fixed casters have no rotating structure and cannot rotate, and the two casters are usually matched, for example, the structure of the trolley is that the front side is provided with two fixed wheels, and the rear side is close to the pushing handrail is provided with two movable universal casters; the existing universal caster has certain disadvantages in use, is inconvenient to replace and not stable enough in use, and brings certain adverse effects to practical use;

simultaneously universal castor often installs and uses on the suitcase, but in the region that some meadows are more, like xinjiang, tibet, when not having the vehicle and need artificial pulling the suitcase, the universal castor of suitcase below twines the forage grass easily, leads to universal castor to be died by the card to influence the use of suitcase, for this reason, we propose a universal castor.

Disclosure of Invention

The invention mainly aims to provide a universal caster which can effectively solve the problems in the background technology.

In order to achieve the purpose, the invention adopts the technical scheme that:

a universal caster comprises a caster body, wherein the lower end of the caster body is provided with two first rotating bearings, a first bearing rotating roller is arranged between the two first rotating bearings, the middle part of the upper end of the caster body is provided with a second bearing rotating roller, the upper end of the second bearing rotating roller is provided with a second rotating bearing, the upper end of the second rotating bearing is provided with a connecting frame, the inner side of the connecting frame is provided with a connecting block, the outer surface of the front end of the connecting frame and the outer surface of the front end of the connecting block are both provided with a circular through hole in a penetrating manner, the inner side of the circular through hole is provided with a fixing clamp column in a penetrating manner, the upper end of the fixing clamp column is provided with an iron wire in a penetrating manner, the lower end inside the connecting block is provided with a damping spring, the inner side of the damping spring is provided with a supporting block, the upper end of the supporting block is provided with an installation plate; the outer side of the first bearing rotary roller is provided with a rolling wheel, and the outer surface of one side of the rolling wheel is movably connected with the outer surface of one side of the first rotary bearing through the first bearing rotary roller.

Preferably, two brackets which are symmetrical along the first bearing roller are respectively arranged on two inner side surfaces of the universal caster body; one end of the bracket is fixedly connected to the inner side surface of the universal caster body, and the other end of the bracket is fixedly connected with a cutting knife; one side of the cutting knife close to the outer surface of the first bearing rotary roller is provided with an arc-shaped surface, and the end surface of the cutting knife is provided with a slope surface; a gap is arranged between the arc-shaped surface and the first bearing rotary roller; the gap gradually increases towards the top of the first bearing roller.

Preferably, the top of the cutting knife is provided with an auxiliary block; one side that supplementary piece is close to domatic sets to the crescent, and the thickness of supplementary piece is crescent to one side of keeping away from the crescent, and supplementary piece is used for assisting the cutting knife to cut.

Preferably, one of the auxiliary blocks is slidably connected to the top surface of the cutting knife, an air cylinder is arranged on one side of the auxiliary block, which is far away from the slope surface, the end part of a telescopic rod of the air cylinder is fixedly connected with the side surface of the auxiliary block, and a slide way is arranged on the corresponding side of the universal caster body; the other end of the slideway is communicated with an inner cavity of the air cylinder through an air pipe; the end part of the other end of the insulating sliding block is fixedly connected with a conductive wire; a battery is arranged between the two brackets at the same side; the diameter of the middle part of the conductive wire is smaller than that of the two ends of the conductive wire, and the other end of the conductive wire is connected with the cathode of the battery; the telescopic link of supplementary piece sliding compression connection, the telescopic link is forced out the gas of inflator, and gas gets into in the slide through the trachea to promote insulating slider to slide, insulating slider promotes the tip of conducting wire and the anodal contact of battery, makes the conducting wire electrically conduct generate heat.

Preferably, the outer side surfaces of the universal caster main bodies are respectively hinged with a supporting rod; the bottom end of the supporting rod is fixedly connected with a sealing cover; the sealing cover seals the outer side face of the first rotating bearing.

Preferably, the outer surface of the lower end of the limiting plate is movably connected with the outer surface of the inner lower end of the connecting block through a damping spring, the outer surface of the lower end of the mounting plate is fixedly connected with the outer surface of the upper end of the limiting plate through a supporting block, and the outer surface of the upper end of the mounting plate is provided with a mounting hole in a penetrating mode.

Preferably, the outer surface of the upper end of the damping spring is fixedly connected with the outer surface of the lower end of the supporting block through a limiting plate, a welding block is arranged between the damping spring and the connecting block, and the outer surface of the lower end of the damping spring is fixedly connected with the outer surface of the inner lower end of the connecting block through the welding block.

Preferably, the outer surface of one side of the rolling wheel is movably connected with the outer surface of one side of the first rotating bearing through the first bearing rotating roller.

Preferably, the outer surface of the connecting block is fixedly connected with the inner side outer surface of the connecting frame through a fixing clamp column, the outer surface of the fixing clamp column is fixedly connected with the inner side outer surface of the circular through hole through an iron wire, and the fixing clamp column is T-shaped.

Preferably, the lower extreme surface of linking frame passes through No. two rolling bearing and the upper end surface swing joint of universal castor main part, No. two rolling bearing's lower extreme surface bears the weight of through No. two and changes the upper end surface swing joint of roller and universal castor main part, the surface of universal castor main part scribbles anti rust coating.

Compared with the prior art, the invention has the following beneficial effects:

1. the connecting frame is arranged, so that an iron wire can be pulled straight and pulled out of the fixing clamp column, the fixing clamp column is pulled out of the circular through hole, the connecting block and the connecting frame can be separated, then the connecting frame on the universal caster body is taken down from the connecting block on the mounting plate, meanwhile, the connecting frame on the new universal caster body is sleeved on the connecting block, then the fixing clamp column is inserted into the circular through hole again, and the iron wire is inserted into the fixing clamp column again and is bent, so that the fixing clamp column can be fixed in the circular through hole, namely, the connecting block on the mounting plate and the connecting frame on the new universal caster body are fixed together to finish replacement, and further, the universal caster is convenient to replace.

2. According to the invention, the damping spring is arranged, so that when the universal caster is fixed on a supported object for use, when the ground on which the universal caster travels is uneven, the connecting block and the rolling wheel on the universal caster body can move upwards or downwards, and the damping spring in the connecting block extends or contracts to offset the force generated when the connecting block moves upwards or downwards, so that the supported object on the mounting plate can keep stable linear advance when the connecting block moves upwards and downwards, and the advantage of more stable use is realized, and the use effect is better compared with that of the traditional mode.

3. According to the invention, the cutting knife is arranged, and the gap between the arc surface and the first bearing rotating roller is gradually enlarged towards the top of the first bearing rotating roller, so that on one hand, the gap can avoid friction generated by direct contact between the arc surface and the outer surface of the first bearing rotating roller, thereby influencing the normal work of the first bearing rotating roller, on the other hand, the smaller gap at the outer side can not place excessive forage grass on the first bearing rotating roller, and the forage grass can be removed along the slope when the amount of the wound forage grass is too much by matching with the slope arranged at the end part of the cutting knife, so that the cleaning efficiency is improved, the probability of blocking is reduced, the universal caster on the suitcase can be normally used at the grassland, and the application range and the practicability of the universal caster are increased.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a sectional view showing the connection of the connection frame and the connection block according to the present invention;

FIG. 3 is a sectional view of the mounting plate and connecting block of the present invention;

FIG. 4 is a schematic view of the connection frame of the present invention;

FIG. 5 is a front view of the caster body of the present invention;

FIG. 6 is a cross-sectional view A-A of FIG. 5 in accordance with the present invention;

in the figure: 1. a caster body; 2. a first rotating bearing; 3. a first bearing roller; 4. a rolling wheel; 5. a second bearing roller; 6. a second rotating bearing; 7. a connecting frame; 8. connecting blocks; 9. fixing the clamping column; 10. mounting a plate; 11. a circular through hole; 12. iron wires; 13. a support block; 14. a limiting plate; 15. a damping spring; 16. welding the blocks; 17. a support; 18. cutting; 19. an auxiliary block; 20. an air cylinder; 21. a slideway; 22. an insulating slider; 23. an air tube; 24. a conductive filament; 25. a strut; 26. and (7) sealing the cover.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-6, a universal caster comprises a universal caster body 1, wherein the lower end of the universal caster body 1 is provided with two first rotating bearings 2, a first bearing roller 3 is arranged between the two first rotating bearings 2, the middle part of the upper end of the universal caster body 1 is provided with a second bearing roller 5, the upper end of the second bearing roller 5 is provided with a second rotating bearing 6, the upper end of the second rotating bearing 6 is provided with a connecting frame 7, the inner side of the connecting frame 7 is provided with a connecting block 8, the outer surface of the front end of the connecting frame 7 and the outer surface of the front end of the connecting block 8 are both provided with a circular through hole 11 in a penetrating manner, the inner side of the circular through hole 11 is provided with a fixing clamp column 9 in a penetrating manner, the upper end of the fixing clamp column 9 is provided with an iron wire 12 in a penetrating manner, and the lower end of the, a supporting block 13 is arranged on the inner side of the damping spring 15, a limiting plate 14 is arranged at the upper end of the damping spring 15 on the outer side of the supporting block 13, and a mounting plate 10 is arranged at the upper end of the supporting block 13; the outer side of the first bearing rotary roller 3 is provided with a rolling wheel 4, and the outer surface of one side of the rolling wheel 4 is movably connected with the outer surface of one side of the first rotary bearing 2 through the first bearing rotary roller 3.

The outer surface of the lower end of the limiting plate 14 is movably connected with the outer surface of the lower end of the inner side of the connecting block 8 through a damping spring 15, the outer surface of the lower end of the mounting plate 10 is fixedly connected with the outer surface of the upper end of the limiting plate 14 through a supporting block 13, a mounting hole penetrates through the outer surface of the upper end of the mounting plate 10, the limiting plate 14 plays a role in limiting and fixing, the damping spring 15 plays a role in damping, the connecting block 8 plays a role in connecting, the supporting block 13 plays a role in connecting and supporting, and the mounting plate 10; the outer surface of the upper end of the damping spring 15 is fixedly connected with the outer surface of the lower end of the supporting block 13 through the limiting plate 14, a welding block 16 is arranged between the damping spring 15 and the connecting block 8, and the outer surface of the lower end of the damping spring 15 is fixedly connected with the outer surface of the inner lower end of the connecting block 8 through the welding block 16; the outer surface of the upper end of the first bearing rotating roller 3 is movably connected with the outer surface of the lower end of the universal caster main body 1 through the first rotating bearing 2, a rolling wheel 4 is arranged on the outer side of the first bearing rotating roller 3, the outer surface of one side of the rolling wheel 4 is movably connected with the outer surface of one side of the first rotating bearing 2 through the first bearing rotating roller 3, the welding block 16 plays a role in connection and fixation, the first bearing rotating roller 3 and the first rotating bearing 2 both play a role in connection and rotation, and the rolling wheel 4 plays a role in rolling; the outer surface of the connecting block 8 is fixedly connected with the inner side outer surface of the connecting frame 7 through a fixing clamp column 9, the outer surface of the fixing clamp column 9 is fixedly connected with the inner side outer surface of the circular through hole 11 through an iron wire 12, the fixing clamp column 9 is T-shaped, the fixing clamp column 9 plays a role in fixing, the connecting frame 7 plays a role in connecting and fixing, and the iron wire 12 plays a role in limiting; the lower extreme surface of linking frame 7 passes through No. two rolling bearing 6 and universal caster main part 1's upper end surface swing joint, No. two rolling bearing 6's lower extreme surface bears the upper end surface swing joint of commentaries on classics roller 5 and universal caster main part 1 through No. two, universal caster main part 1's surface scribbles anti rust coating, No. two rolling bearing 6 all play the connection rotation effect with No. two bearing commentaries on classics roller 5, universal caster main part 1 plays the supporting role.

As an embodiment of the invention, two inner side surfaces of the universal caster body 1 are respectively provided with two brackets 17 which are symmetrical along the first bearing roller 3; one end of the bracket 17 is fixedly connected to the inner side surface of the universal caster body 1, and the other end is fixedly connected with a cutting knife 18; one side of the cutting knife 18 close to the outer surface of the first bearing rotary roller 3 is set to be an arc-shaped surface, and the end surface of the cutting knife 18 is set to be a slope surface; a gap is arranged between the arc-shaped surface and the first bearing rotary roller 3; the gap gradually increases towards the top of the first load-bearing roller 3. When the universal caster wheel works, pasture grass is easy to wind in a large area of a pasture field when the universal caster wheel is used, so that the universal caster wheel is blocked and the use of the universal caster wheel is influenced, according to the universal caster wheel, the pair of brackets 17 are respectively arranged on the two inner side surfaces of the universal caster wheel main body 1, the cutting knives 18 are fixedly connected on the two brackets 17, the directions of the two cutting knives 18 are opposite, when the pasture grass or other objects are wound on the first bearing rotary roller 3 on the universal caster wheel, no matter which direction the first bearing rotary roller 3 rotates, the relative rotation generated between the fixed cutting knife 18 and the first bearing rotary roller 3 can ensure that the cutting knives 18 can cut the wound pasture grass, the pasture grass is shortened and then thrown out under the centrifugal force action when the first bearing rotary roller 3 rotates, and meanwhile, the arc-shaped surfaces can ensure that the bottom surfaces of the cutting knives 18 are attached to the first bearing rotary roller 3, better cutting winding forage grass, and with the clearance between the two to the top increase setting that bears the weight of commentaries on classics roller 3 gradually for one number, the clearance can be avoided the arcwall face and bear the weight of the friction that 3 surface direct contacts of commentaries on classics roller produced with one number on the one hand, thereby influence the normal work that bears the weight of commentaries on classics roller 3 for one number, the less clearance in the on the other hand outside can not put into one number with too much forage grass and bear on the commentaries on classics roller 3, cooperate the domatic of 18 tip settings of cutting knife, will remove along domatic when winding forage grass is too much, the efficiency of clearing away has been improved, the dead probability of card has been reduced, make universal castor on the suitcase also can normal use in the place in meadow, universal castor's application range and practicality.

As an embodiment of the present invention, an auxiliary block 19 is provided on the top of the cutting knife 18; one side of the auxiliary block 19 close to the slope surface is arranged to be crescent, the thickness of the auxiliary block 19 is gradually increased towards one side far away from the crescent, and the auxiliary block 19 is used for assisting the cutting knife 18 to cut. The during operation, through being equipped with supplementary piece 19, when twining too much forage grass in the short time, it can not clear away fast to lean on cutting knife 18 alone this moment, consequently be equipped with supplementary piece 19 at the top of cutting knife 18, too much forage grass directly enters into in the side of the crescent of concave supplementary piece 19 along domatic in the in-process of cutting, because the thickness of supplementary piece 19 is crescent to one side of keeping away from the crescent, the profile of the moon has formed the faceted pebble, the forage grass that the event falls into can be cut off by the facet in the crescent by force, thereby further improved cutting efficiency, the dead probability of card has been reduced, universal caster's application range and practicality have further been increased.

As an embodiment of the invention, one of the auxiliary blocks 19 is slidably connected to the top surface of the cutting knife 18, an air cylinder 20 is arranged on one side of the auxiliary block 19 away from the slope, the end of a telescopic rod of the air cylinder 20 is fixedly connected with the side surface of the auxiliary block 19, and a slide way 21 is arranged on the corresponding side of the universal caster body 1; the slide rail 21 is connected with an insulating slide block 22 in a sliding way, and the other end of the slide rail 21 is communicated with the inner cavity of the air cylinder 20 through an air pipe 23; the end part of the other end of the insulating sliding block 22 is fixedly connected with a conductive wire 24; a battery is arranged between the two brackets 17 at the same side; the diameter of the middle part of the conductive wire 24 is smaller than that of the two ends, and the other end of the conductive wire 24 is connected with the cathode of the battery; the auxiliary block 19 slides and compresses the connected telescopic rod, the telescopic rod pushes out the gas in the gas cylinder 20, the gas enters the slideway 21 through the gas pipe 23, so that the insulating slide block 22 is pushed to slide, the insulating slide block 22 pushes the end part of the conductive wire 24 to be in contact with the positive electrode of the battery, and the conductive wire 24 conducts electricity and generates heat. When the universal wheel works, hair is easy to wind particularly in the using process of the universal wheel and is not easy to clean, and the use of the universal wheel is seriously influenced, therefore, one auxiliary block 19 is connected to the end part of the cutting knife 18 in a sliding way, when too much hair or dry grass is wound, the universal wheel is manually pushed to rotate forwards and backwards, so that the hair or the dry grass can enter the auxiliary block 19 and then move relatively to the auxiliary block 19, the auxiliary block 19 can continuously cut the hair or the dry grass when moving to the limit position, the telescopic rod can be compressed by the movement of the auxiliary block 19, so that the gas in the gas cylinder 20 sequentially passes through the gas pipe 23 and slides, then the insulating slide block 22 is pushed to move, the end part of the conductive wire 24 is pushed by the insulating slide block 22 to be contacted with the positive pole of the battery, the positive pole and the negative pole of the battery are simultaneously communicated with the two ends of the conductive wire 24, the conductive wire, the heating conductive wire 24 is close to the first bearing rotary roller 3, so that hair or dry pasture is heated, the hair or the pasture is quickly curled and cut off, the cut-off hair or pasture can quickly fall off under the action of centrifugal force, and the clearing efficiency is further accelerated; meanwhile, the diameter of the middle part of the conductive wire 24 is smaller than that of the two ends, so that the heat-conducting wire in the middle part can heat hair or dry pasture at the lower part more quickly, the separation efficiency is improved, and the in-store loss of the battery is reduced; when the wound hair is too little, the auxiliary block 19 is pushed to move by manually holding the small rod from the lower part, and the conductive wire 24 can be used for heating the hair in a conductive manner, so that the application range and the practicability of the universal caster are further enlarged.

In one embodiment of the present invention, a strut 25 is hinged to each of the outer side surfaces of the caster main body 1; the bottom end of the supporting rod 25 is fixedly connected with a sealing cover 26; the sealing cover 26 seals the outer side surface of the first rotary bearing 2. During operation, the surface of rolling bearing 2 twines into forage grass or indoor hair equally easily in the in-process that the universal wheel used, consequently through articulated on the lateral surface of universal caster main part 1 have branch 25, rotate branch 25 for thereby the sealed lid 26 that branch 25 tip linked firmly just in time aligns with rolling bearing 2's surface and seals rolling bearing 2 No. one, thereby reduces the possibility that hair or forage grass got into rolling bearing 2 No. one, has improved universal caster's practicality.

It should be noted that, the present invention is a universal caster, when in use, a user can install an installation plate 10 at the lower end of a supported object through screws, and then push the supported object to make a rolling wheel 4 of the supported object roll by using the rotation performance between a first rotating bearing 2 and a first bearing rotating roller 3 to drive the supported object to move, when in movement, the rolling wheel 4 on the universal caster body 1 can flexibly turn by using the rotation performance between a second bearing rotating roller 5 and a second rotating bearing 6, for example, when walking on an uneven road surface, a connection block 8 and a rolling wheel 4 on the universal caster body 1 can move upwards or downwards, and simultaneously a damping spring 15 inside the connection block 8 extends or contracts to counteract the force generated when the connection block 8 moves upwards or downwards, so that the supported object on the installation plate 10 can keep stable straight advance when the rolling wheel 4 moves upwards or downwards, because the damping spring 15 is connected with the mounting plate 10 through the supporting block 13 and the limiting plate 14, the damping spring 15 cannot be separated from the mounting plate 10 when in use, if the universal caster needs to be replaced due to damage, a user can straighten the iron wire 12 and draw out the iron wire 12 from the fixing clamp column 9, and simultaneously draw out the fixing clamp column 9 from the inside of the circular through hole 11, so that the connecting block 8 and the connecting frame 7 can be separated, then the user takes the connecting frame 7 on the universal caster body 1 off from the connecting block 8 on the mounting plate 10, meanwhile, the user sleeves the connecting block 8 with the new connecting frame 7 on the universal caster body 1, then the user reinserts the fixing clamp column 9 into the circular through hole 11, and the user reinserts the iron wire 12 into the fixing clamp column 9 and bends, so that the fixing clamp column 9 can be fixed in the circular through hole 11, namely, the connecting block 8 on the mounting plate 10 and the new connecting frame 7 on the universal caster body 1 are fixed together The method is simple and convenient;

in the using process of the existing universal caster, pasture grass is easy to wind in a large area of a pasture field when used, so that the universal caster is blocked, and the use of the universal caster is influenced, therefore, the invention installs a pair of brackets 17 on two inner side surfaces of the universal caster body 1, the two brackets 17 are fixedly connected with the cutting knives 18, and the directions of the two cutting knives 18 are opposite, when the pasture grass or other objects are wound on the first bearing rotating roller 3 on the universal caster, no matter which direction the first bearing rotating roller 3 rotates, the relative rotation generated between the fixed cutting knife 18 and the first bearing rotating roller 3 can lead the cutting knife 18 to cut the wound pasture grass, the pasture grass is shortened and then thrown out under the centrifugal force action when the first bearing rotating roller 3 rotates, and simultaneously the arc surface can lead the bottom surface of the cutting knife 18 to be attached to the first bearing rotating roller 3, better cutting winding forage grass, and with the clearance between the two to the top increase setting that bears the weight of commentaries on classics roller 3 gradually for one number, the clearance can be avoided the arcwall face and bear the weight of the friction that 3 surface direct contacts of commentaries on classics roller produced with one number on the one hand, thereby influence the normal work that bears the weight of commentaries on classics roller 3 for one number, the less clearance in the on the other hand outside can not put into one number with too much forage grass and bear on the commentaries on classics roller 3, cooperate the domatic of 18 tip settings of cutting knife, will remove along domatic when winding forage grass is too much, the efficiency of clearing away has been improved, the dead probability of card has been reduced, make universal castor on the suitcase also can normal use in the place in meadow, universal castor's application range and practicality.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A universal caster, comprising a caster body (1), characterized in that: the lower end of the universal caster main body (1) is provided with two first rotating bearings (2), a first bearing rotating roller (3) is arranged between the two first rotating bearings (2), a second bearing rotating roller (5) is arranged in the middle of the upper end of the universal caster main body (1), a second rotating bearing (6) is arranged at the upper end of the second bearing rotating roller (5), a connecting frame (7) is arranged at the upper end of the second rotating bearing (6), a connecting block (8) is arranged on the inner side of the connecting frame (7), circular through holes (11) are formed in the outer surface of the front end of the connecting frame (7) and the outer surface of the front end of the connecting block (8) in a penetrating manner, fixing clamp columns (9) are arranged on the inner sides of the circular through holes (11) in a penetrating manner, iron wires (12) are arranged on the upper ends of the fixing clamp columns (9), and damping springs (15) are arranged at the lower ends of, a supporting block (13) is arranged on the inner side of the damping spring (15), a limiting plate (14) is arranged at the upper end of the damping spring (15) on the outer side of the supporting block (13), and a mounting plate (10) is arranged at the upper end of the supporting block (13); the outer side of the first bearing rotary roller (3) is provided with a rolling wheel (4), and the outer surface of one side of the rolling wheel (4) is movably connected with the outer surface of one side of the first rotary bearing (2) through the first bearing rotary roller (3).

2. The caster according to claim 1, wherein: two brackets (17) which are symmetrical along the first bearing roller (3) are respectively arranged on two inner side surfaces of the universal caster body (1); one end of the support (17) is fixedly connected to the inner side surface of the universal caster body (1), and the other end of the support is fixedly connected with a cutting knife (18); one side of the cutting knife (18) close to the outer surface of the first bearing rotary roller (3) is arranged into an arc-shaped surface, and the end surface of the cutting knife (18) is arranged into a slope surface; a gap is arranged between the arc-shaped surface and the first bearing rotary roller (3); the gap gradually increases towards the top of the first bearing roller (3).

3. The caster according to claim 2, wherein: the top of the cutting knife (18) is provided with an auxiliary block (19); one side of the auxiliary block (19) close to the slope surface is arranged to be crescent, the thickness of the auxiliary block (19) is gradually increased towards one side far away from the crescent, and the auxiliary block (19) is used for assisting the cutting knife (18) to cut.

4. A castor according to claim 3, wherein: one auxiliary block (19) is connected to the top surface of the cutting knife (18) in a sliding mode, an air cylinder (20) is arranged on one side, away from the slope, of the auxiliary block (19), the end portion of an expansion link of the air cylinder (20) is fixedly connected with the side face of the auxiliary block (19), and a slide way (21) is formed in one corresponding side of the universal caster main body (1); an insulating slide block (22) is connected in the slide way (21) in a sliding way, and the other end of the slide way (21) is communicated with the inner cavity of the air cylinder (20) through an air pipe (23); the end part of the other end of the insulating sliding block (22) is fixedly connected with a conductive wire (24); a battery is arranged between the two brackets (17) at the same side; the diameter of the middle part of the conductive wire (24) is smaller than that of the two ends, and the other end of the conductive wire (24) is connected with the negative electrode of the battery; the auxiliary block (19) slides and compresses the connected telescopic rod, the telescopic rod pushes out the gas in the gas cylinder (20), the gas enters the slideway (21) through the gas pipe (23), so that the insulating slide block (22) is pushed to slide, the insulating slide block (22) pushes the end part of the conductive wire (24) to be in contact with the positive electrode of the battery, and the conductive wire (24) conducts electricity and generates heat.

5. The caster according to claim 4, wherein: a supporting rod (25) is hinged to the outer side surface of the universal caster main body (1) respectively; the bottom end of the support rod (25) is fixedly connected with a sealing cover (26); the sealing cover (26) seals the outer side surface of the first rotating bearing (2).

6. The caster according to claim 1, wherein: the outer surface of the lower end of the limiting plate (14) is movably connected with the outer surface of the inner side lower end of the connecting block (8) through a damping spring (15), the outer surface of the lower end of the mounting plate (10) is fixedly connected with the outer surface of the upper end of the limiting plate (14) through a supporting block (13), and the outer surface of the upper end of the mounting plate (10) penetrates through a mounting hole.

7. The caster according to claim 1, wherein: the outer surface of the upper end of the damping spring (15) is fixedly connected with the outer surface of the lower end of the supporting block (13) through a limiting plate (14), a welding block (16) is arranged between the damping spring (15) and the connecting block (8), and the outer surface of the lower end of the damping spring (15) is fixedly connected with the outer surface of the inner lower end of the connecting block (8) through the welding block (16).

8. The caster according to claim 1, wherein: the outer surface of the upper end of the first bearing rotary roller (3) is movably connected with the outer surface of the lower end of the universal caster main body (1) through a first rotary bearing (2).

9. The caster according to claim 1, wherein: the surface of connecting block (8) passes through the inboard surface fixed connection of fixing clip post (9) and connected frame (7), the surface of fixing clip post (9) passes through the inboard surface fixed connection of iron wire (12) and circular through-hole (11), the shape of fixing clip post (9) is the T font.

10. The caster according to claim 1, wherein: the outer surface of the lower end of the connecting frame (7) is movably connected with the outer surface of the upper end of the universal caster body (1) through a second rotating bearing (6), the outer surface of the lower end of the second rotating bearing (6) is movably connected with the outer surface of the upper end of the universal caster body (1) through a second bearing rotating roller (5), and the outer surface of the universal caster body (1) is coated with an anti-rust coating.