CN219856667U

CN219856667U - Compact movable castor

Info

Publication number: CN219856667U
Application number: CN202321355791.0U
Authority: CN
Inventors: 卢响根
Original assignee: Quanzhou Zhuoye Caster Manufacturing Co ltd
Current assignee: Quanzhou Zhuoye Caster Manufacturing Co ltd
Priority date: 2023-05-31
Filing date: 2023-05-31
Publication date: 2023-10-20
Anticipated expiration: 2033-05-31

Abstract

The utility model relates to the field of casters and provides a compact movable caster, which comprises a caster body, wherein the caster body comprises a bracket, a wave disc arranged on the bracket, a bottom plate rotatably arranged above the wave disc, a nest nail penetrating through the wave disc and the middle part of the bottom plate, and a first bearing sleeved on the nest nail, the bottom plate is rotatably connected with the wave disc through a second bearing, a first annular groove is arranged on the inner wall of the bottom of the wave disc, the first bearing is connected with the first annular groove, and the nest nail is sequentially sleeved with the bottom plate, the wave disc and the second bearing from bottom to top. The wave disc bears the positions of the acting forces of the two bearings in the vertical direction, the wave disc can bear larger acting force, the height of the caster body can be designed to be lower, the structure is compact, and the technical problems of high height, large volume and insufficient compactness of the dual-bearing caster are solved.

Description

Compact movable castor

Technical Field

The utility model relates to the field of casters, in particular to a compact movable caster.

Background

The existing truckle is somewhat to turn to by adopting the duplex bearing, adopts duplex bearing to strengthen the bearing capacity of truckle, and duplex bearing sets up from top to bottom generally, still need set up the ripples dish of certain thickness between the duplex bearing for the height of whole truckle is high, and the truckle is bulky, compact inadequately, and packing transportation is with high costs, to some devices that need bear big, the truckle height is low, and the truckle is the requirement that is difficult to satisfy the device.

Chinese patent application No.: 202222076423.4 the utility model discloses a duplex bearing silence formula universal castor, including castor frame and wheel, the castor frame includes bearing installation department and wheel installation department, is equipped with the bearing mounting groove that runs through the upper and lower end of bearing installation department on the bearing installation department, is equipped with first bearing, second bearing and the fastening platform of looks butt in the bearing mounting groove, wears to locate first bearing, second bearing and fastening platform after with the fastening platform cooperation with first bearing and second bearing fixed in the bearing mounting groove through the fastener. The caster has a high height, is not compact enough, and is difficult to be applied to some devices.

Disclosure of Invention

Accordingly, in view of the above-mentioned problems, the present utility model proposes a compact movable caster. The dual-bearing caster solves the technical problems of high height, large volume and insufficient compactness of the dual-bearing caster.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a compact movable castor, includes the castor main part, the castor main part includes the support, locates ripples dish on the support, rotationally locates the bottom plate of ripples dish top, wears to locate ripples dish and bottom plate middle part nest nail, the first bearing of nest nail is located to the cover, the bottom plate with rotatable connection through the second bearing between the ripples dish, the inner wall of ripples dish bottom is equipped with first annular, first bearing is connected with first annular, bottom plate, ripples dish, second bearing are established to the cover in proper order from bottom to top on the nest nail.

Further:

the outer wall of ripples dish bottom is equipped with the second annular, the second annular is connected in the inner wall and the top of support.

The top of the wave disc is provided with a third annular groove, the second bearing is positioned on the third annular groove, and the radius of the central line of the third annular groove is larger than the outer diameter of the first bearing.

The vertical distance between the bottom of the third annular groove and the top of the second annular groove is 0-2cm.

The bottom surface of the third ring groove is lower than the top surface of the second ring groove.

The nest nail is characterized in that a small round nut is detachably arranged at the bottom of the nest nail, a convex ring is arranged on the outer wall of the nest nail or a pipe body is sleeved on the outer wall of the nest nail, the top of the inner ring of the first bearing can be abutted to the bottom of the convex ring or the bottom of the pipe body, and the bottom of the inner ring of the first bearing is abutted to the small round nut.

The first bearing is capable of carrying both radial and axial forces, and the second bearing carries axial forces.

The first bearing is a tapered roller bearing, and the second bearing is a thrust needle bearing.

The support is penetrated with a pin shaft, the pin shaft is rotatably provided with a roller, two sides of the roller are provided with groove bodies, a roller bearing is arranged in the groove bodies, and the roller bearing is sleeved on the pin shaft.

The pin shaft is provided with a sleeve, the pin shaft is fixed through a small nut, two ends of the sleeve respectively lean against the inner rings of the two roller bearings, and a gasket is arranged between the inner rings of the roller bearings and the bracket.

By adopting the technical scheme, the utility model has the beneficial effects that:

the first bearing is arranged in the first annular groove of the inner wall of the bottom of the wave disc, the second bearing is arranged at the top of the wave disc, the positions of the wave disc bearing the acting forces of the two bearings in the vertical direction are different, the vertical height distance between the first bearing and the second bearing can be designed to be smaller, the wave disc can bear larger acting force, the bearing capacity is large, the height of the caster main body can be designed to be lower, and the structure is compact; furthermore, the second annular groove of the outer wall of the bottom of the wave disc is supported by the bracket, is designed corresponding to the first annular groove of the outer wall of the bottom of the wave disc, and has more compact structure and good fixing effect; further, the radius of the central line of the third annular groove is larger than the outer diameter of the first bearing, and in the vertical direction, the acting force positions of the first bearing and the second bearing on the wave disc are far away, so that the bearing capacity of the wave disc is larger; further, the vertical distance between the bottom of the third ring groove and the top of the second ring groove is 0-2cm, the height of the caster body is low, and the structure is compact; furthermore, the bottom surface of the third ring groove is lower than the top surface of the second ring groove, the height of the caster body is lower, and the structure is more compact; furthermore, the first bearing inner ring has a supporting function in the axial direction, and the first bearing can bear larger acting force; further, the first bearing can bear radial and axial acting forces, the second bearing bears axial acting forces, the steering effect is better, and the bearing capacity is larger; furthermore, the tapered roller bearing is thinner, and the caster body is more compact; furthermore, the roller bearings are arranged on two sides of the roller, and the two roller bearings are symmetrically designed, so that the bearing force is uniform, the stability is better, and the bearing capacity is larger; further, the sleeve not only has a certain supporting function and improves the bearing capacity of the pin shaft, but also can support the inner ring of the roller bearing, the gasket supports the other side of the inner ring, the inner ring is supported by axial acting force, and damage of the inner ring is prevented.

Drawings

FIG. 1 is a schematic view of the main body of the caster of the present utility model;

FIG. 2 is a cross-sectional view of the caster body;

FIG. 3 is another angular cross-sectional view of the caster body;

FIG. 4 is an exploded view of the caster body;

FIG. 5 is a cross-sectional view of another construction of the caster body;

fig. 6 is a schematic view of the structure of the socket nail sleeved with the pipe body.

Detailed Description

The utility model will now be further described with reference to the drawings and detailed description.

Referring to fig. 1 to 4, the present embodiment provides a compact movable caster, including a caster body, the caster body includes a bracket 1, a wave plate 2 disposed on the bracket 1, a bottom plate 3 rotatably disposed above the wave plate 2, a socket nail 4 passing through the wave plate 2 and the middle of the bottom plate 3, and a first bearing 5 sleeved on the socket nail 4, the bottom plate 3 and the wave plate 2 are rotatably connected through a second bearing 6, the second bearing 6 carries axial acting force, the second bearing 6 is a thrust needle bearing, a first ring groove 21 is disposed on the inner wall of the bottom of the wave plate 2, the first bearing 5 is connected with the first ring groove 21, the first bearing 5 can carry radial and axial acting force, the first bearing 5 is a tapered roller bearing, and the socket nail 4 is sequentially sleeved with the bottom plate 3, the wave plate 2 and the second bearing 6 from bottom to top. The outer wall of the bottom of the wave disc 2 is provided with a second annular groove 22, and the second annular groove 22 is connected with the inner wall and the top of the bracket 1. The top of the wave disc 2 is provided with a third annular groove 23, the second bearing 6 is positioned on the third annular groove 23, and the radius of the central line of the third annular groove 23 is larger than the outer diameter of the first bearing 5. A pin shaft 7 is arranged on the bracket 1 in a penetrating way, a roller 8 is rotatably arranged on the pin shaft 7, groove bodies 80 are arranged on two sides of the roller 8, a roller bearing 81 is arranged in the groove bodies 80, and the roller bearing 81 is sleeved on the pin shaft 7. The pin shaft 7 is provided with a sleeve 82, two ends of the sleeve 82 respectively abut against the inner rings of the two roller bearings 81, a gasket 9 is arranged between the inner rings of the roller bearings 81 and the bracket 1, and the pin shaft 7 is fixed through a small nut 71.

The vertical distance between the bottom of the third ring groove 23 and the top of the second ring groove 22 is usually 0-2cm, but may be other larger distances as appropriate. The bottom surface of the third ring groove 23 may be lower than the top surface of the second ring groove 22, as shown in fig. 5, so that the structure is more compact and the vertical height of the caster body is smaller.

The lower end of the socket nail 4 is fixed by a small round nut 41, and the socket nail 4 may have other structures, which are well known structures and will not be described herein.

The outer wall of the nest nail 4 is provided with the convex ring 42, the convex ring 42 and the nest nail 4 are integrally formed, the top of the inner ring of the first bearing 5 can be propped against the convex ring 42, the bottom of the inner ring of the first bearing 5 is propped against the small round nut 41, the structure has a good supporting effect in the axial direction of the inner ring of the first bearing 5, the first bearing 5 is better protected, and the first bearing 5 can bear larger acting force.

Referring to fig. 6, the outer wall of the socket nail 4 is not provided with a convex ring 42, the socket nail 4 is sleeved with a pipe body 40, the upper end of the pipe body 40 abuts against the bottom plate 3, the lower end of the pipe body 40 abuts against the inner ring of the first bearing 5, and the bottom of the inner ring of the first bearing 5 abuts against the small round nut 41.

The convex ring 42 and the pipe body 40 may not be provided, and may be provided according to circumstances.

The socket nails 4 and the bottom plate 3 are usually fixed by welding, but also can be fixed by not welding, and are particularly arranged according to the situation.

The second ring groove 22 may not be provided, and may be provided according to circumstances.

The first bearing 5 may also be fixed to the bracket 1 by welding or other means, and is specifically set according to circumstances.

The radius of the center line of the third ring groove 23 may be smaller than the outer diameter of the first bearing 5, as the case may be.

The first bearing 5 may be another bearing capable of bearing radial and axial forces, the second bearing 6 may be another bearing capable of bearing axial forces, and the second bearing 6 may be a known bearing capable of bearing radial and axial forces, specifically according to circumstances.

The roller 8 may be provided as a single bearing, or may be provided as a roller 8 of other conventional structure, which is a well-known structure and will not be described in detail herein.

The sleeve 82 and the gasket 9 may not be provided, and may be provided as the case may be.

The working mode of the utility model is as follows:

the castor main body has the duplex bearing, and radial and axial effort can be born to first bearing 5, and axial effort can be born to second bearing 6, not only improves the steering effect of castor main body, and the bearing capacity is big moreover, and first bearing 5 sets up the first annular 21 at ripples dish 2 bottom inner wall, and second bearing 6 sets up at ripples dish 2 top, and ripples dish 2 bottom outer wall's second annular 22 is supported through support 1, and this kind of structure, castor main body height is low, compact structure.

While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A compact caster comprising a caster body, characterized in that: the caster comprises a caster body, a bracket, a wave disc arranged on the bracket, a bottom plate rotatably arranged above the wave disc, a nest nail penetrating through the wave disc and the middle part of the bottom plate, and a first bearing sleeved on the nest nail, wherein the bottom plate is rotatably connected with the wave disc through a second bearing, a first annular groove is arranged on the inner wall of the bottom of the wave disc, the first bearing is connected with the first annular groove, and the nest nail is sequentially sleeved with the bottom plate, the wave disc and the second bearing from bottom to top.

2. A compact caster as defined in claim 1, wherein: the outer wall of ripples dish bottom is equipped with the second annular, the second annular is connected in the inner wall and the top of support.

3. A compact caster as defined in claim 1, wherein: the top of the wave disc is provided with a third annular groove, the second bearing is positioned on the third annular groove, and the radius of the central line of the third annular groove is larger than the outer diameter of the first bearing.

4. A compact caster as defined in claim 3, wherein: the vertical distance between the bottom of the second bearing and the top of the first bearing is 0-2cm.

5. A compact caster as defined in claim 3, wherein: the bottom surface of the third ring groove is lower than the top surface of the second ring groove.

6. A compact caster as defined in claim 1, wherein: the nest nail is characterized in that a small round nut is detachably arranged at the bottom of the nest nail, a convex ring is arranged on the outer wall of the nest nail or a pipe body is sleeved on the outer wall of the nest nail, the top of the inner ring of the first bearing can be abutted to the bottom of the convex ring or the bottom of the pipe body, and the bottom of the inner ring of the first bearing is abutted to the small round nut.

7. A compact caster as defined in claim 1, wherein: the first bearing is capable of carrying both radial and axial forces, and the second bearing carries axial forces.

8. A compact caster as defined in claim 7, wherein: the first bearing is a tapered roller bearing, and the second bearing is a thrust needle bearing.

9. A compact caster as claimed in any one of claims 1 to 8, wherein: the support is penetrated with a pin shaft, the pin shaft is fixed through a small nut, the pin shaft is rotatably provided with a roller, two sides of the roller are provided with groove bodies, roller bearings are arranged in the groove bodies, and the roller bearings are sleeved on the pin shaft.

10. A compact caster as defined in claim 9, wherein: the pin shaft is provided with a sleeve, two ends of the sleeve respectively lean against the inner rings of the two roller bearings, and a gasket is arranged between the inner rings of the roller bearings and the bracket.