Novel door hanging wheel made of fireproof material

Abstract

The utility model relates to the technical field of door hanging wheels, in particular to a novel fireproof material door hanging wheel which comprises a wheel body, a first installation groove is formed in the outer circumferential surface of the wheel body, two semi-fireproof wear-resistant sleeves are connected to the inner wall of the first installation groove in a sleeved mode, one end of an outer ring of a bearing abuts against a blocking edge, and a second installation groove is annularly formed in the inner circumferential wall of the wheel body. An abutting device is arranged on the inner wall of the second mounting groove, the other end of the small wheel shaft is in threaded connection with a nut, and the nut abuts against the inner ring of the bearing. According to the utility model, the two semi-fireproof wear-resistant sleeves can conveniently extend into the annular limiting groove and can be conveniently and quickly mounted on the annular limiting groove; according to the door hanging wheel, one side of the bearing abuts against the blocking edge arranged on the wheel, the other side of the bearing is fixed to the wheel through the abutting block of the abutting device, and the bearing cannot fall off from the wheel.

Description

Technical Field

[0001] This utility model relates to the field of door roller technology, and in particular to a novel fireproof door roller. Background Technology

[0002] Currently, the rollers on sliding doors or windows, as well as elevators, generally consist of wheels and axles. The wheels are fitted onto the axles and move directly on the tracks.

[0003] For example, the authorized announcement number "CN205422294U" is named Fireproof Door Roller. It uses a fireproof and wear-resistant sleeve to contact the track, which can effectively suppress the generation of sparks and make it safer to use.

[0004] The above-mentioned and existing technologies have the following defects: the tapered extension end of the door roller is not easy to insert into the tapered slot, which makes it difficult to install the fireproof and wear-resistant sleeve on the annular mounting groove; one side of the bearing of the door roller is abutted by the shoulder step set on the wheel, while the other side of the bearing is not fixed to the wheel, which makes the bearing easy to fall off the wheel. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a new type of fireproof door roller.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A novel fireproof door hanger is designed, comprising a wheel, a first mounting groove on the outer circumference of the wheel, two semi-fireproof and wear-resistant sleeves fitted into the inner wall of the first mounting groove, an annular limiting groove on the inner circumference of the first mounting groove, and limiting protrusions matching the annular limiting groove on the opposing side surfaces of the two semi-fireproof and wear-resistant sleeves. An annular retaining edge is provided on the inner circumference of the wheel, and a bearing is provided on the inner circumference of the wheel. One end of the outer ring of the bearing abuts against the retaining edge. A second mounting groove is provided on the inner circumference of the wheel, and a clamping device is provided on the inner wall of the second mounting groove. A dustproof retaining ring is provided on the inner wall of the inner ring of the bearing. A small axle is provided on the inner wall of the bearing inner ring, a large axle is integrally formed on one end of the small axle, and a nut is threadedly connected to the other end of the small axle, the nut abutting against the inner ring of the bearing.

[0008] Preferably, the clamping device includes a clamping block, which is threadedly connected to the inner wall of the second mounting groove by a first bolt, and the clamping block abuts against the outer ring of the bearing.

[0009] Preferably, the wheel has a plurality of threaded holes arranged in a circumferential array on one side surface, which communicate with the first mounting groove. The inner wall of the first mounting groove away from the threaded holes has a plurality of snap-fit ​​grooves, each of which corresponds to one of the threaded holes. The limiting protrusion has a plurality of snap-fit ​​holes on its surface, each of which corresponds to one of the threaded holes. The snap-fit ​​holes, snap-fit ​​grooves, and threaded holes are in a straight line. The threaded holes are threadedly connected to a second bolt, one end of which passes through the snap-fit ​​hole and the snap-fit ​​groove.

[0010] Preferably, one end of each of the plurality of threaded holes is provided with a concealed groove, and the head of the second bolt is disposed in the concealed groove.

[0011] Preferably, the inner surface of the limiting protrusion is provided with a plurality of first positioning blocks, and the inner wall of the first mounting groove is provided with a plurality of first positioning grooves that match the first positioning blocks, and the plurality of first positioning grooves correspond one-to-one with the plurality of first positioning blocks.

[0012] Preferably, the semi-fireproof and wear-resistant sleeve is provided with a second positioning block and a matching second positioning groove at both ends, with the second positioning block extending into the second positioning groove.

[0013] The novel fireproof door roller proposed in this utility model has the following advantages: the two half fireproof and wear-resistant sleeves of this door roller can be easily inserted into the annular limiting groove, and the two half fireproof and wear-resistant sleeves can be easily and quickly installed on the annular limiting groove; one side of the bearing of this door roller is abutted by the retaining edge set on the wheel, and the other side of the bearing is fixed to the wheel by the abutting block of the abutting device, so the bearing will not fall off the wheel. Attached Figure Description

[0014] Figure 1 Exploded view of the wheel and two half fireproof and wear-resistant sleeves of this utility model;

[0015] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0016] Figure 3 This is an enlarged view of position A in this utility model;

[0017] Figure 4 This is an enlarged view of position B of this utility model.

[0018] In the diagram: 1. Wheel; 2. First mounting groove; 3. Semi-fireproof and wear-resistant sleeve; 4. Annular limiting groove; 5. Limiting protrusion; 6. Edge; 7. Second mounting groove; 8. Bearing; 9. Dustproof retaining ring; 10. Small wheel axle; 11. Large wheel axle; 12. Nut; 13. Clamping block; 14. First bolt; 15. Threaded hole; 16. Snap-fit ​​groove; 17. Snap-fit ​​hole; 18. Second bolt; 19. First positioning block; 20. First positioning groove; 21. Concealed groove; 22. Second positioning block; 23. Second positioning groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figure 1-4 A new type of fireproof door roller includes a wheel 1. A first mounting groove 2 is formed on the outer circumference of the wheel 1. Two semi-fireproof and wear-resistant sleeves 3 are fitted into the inner wall of the first mounting groove 2. An annular limiting groove 4 is formed on the inner circumference of the first mounting groove 2. Limiting protrusions 5 that match the annular limiting groove 4 are provided on the opposing side surfaces of the two semi-fireproof and wear-resistant sleeves 3. A retaining edge 6 is formed on the inner circumference of the wheel 1. A bearing 8 is provided on the inner circumference of the wheel 1. One end of the outer ring of the bearing 8 abuts against the retaining edge 6. A second mounting groove 7 is formed on the inner circumference of the wheel 1. A clamping device is provided on the inner wall of the second mounting groove 7. A dustproof retaining ring 9 is provided on the inner circumference of the second mounting groove 7 to effectively prevent external dust from entering. A small wheel axle 10 is provided on the inner wall of the inner ring of the bearing 8. A large wheel axle 11 is integrally formed on one end of the small wheel axle 10. A nut 12 is threadedly connected to the other end of the small wheel axle 10. The nut 12 abuts against the inner ring of the bearing 8.

[0021] The clamping device includes a clamping block 13, which is threadedly connected to the inner wall of the second mounting groove 7 by a first bolt 14, and the clamping block 13 abuts against the outer ring of the bearing 8.

[0022] The wheel 1 has a plurality of threaded holes 15 arranged in a circumferential array on one side surface, which communicate with the first mounting groove 2. The inner wall of the first mounting groove 2 away from the threaded holes 15 has a plurality of snap-fit ​​grooves 16, which correspond one-to-one with the threaded holes 15. The limiting protrusion 5 has a plurality of snap-fit ​​holes 17, which correspond one-to-one with the threaded holes 15. The snap-fit ​​holes 17, snap-fit ​​grooves 16 and threaded holes 15 are on a straight line. The threaded holes 15 are threadedly connected to a second bolt 18, one end of which passes through the snap-fit ​​holes 17 and snap-fit ​​grooves 16.

[0023] Each of the multiple threaded holes 15 has a concealed groove 21 at one end, and the head of the second bolt 18 is set in the concealed groove 21. The concealed groove 21 is provided to prevent the head of the second bolt 18 from protruding from the wheel 1.

[0024] The inner surface of the limiting protrusion 5 is provided with a plurality of first positioning blocks 19, and the inner wall of the first mounting groove 2 is provided with a plurality of first positioning grooves 20 that match the first positioning blocks 19, and the plurality of first positioning grooves 20 correspond one-to-one with the plurality of first positioning blocks 19.

[0025] The two ends of the semi-fireproof and wear-resistant sleeve 3 are respectively provided with a second positioning block 22 and a matching second positioning groove 23, with the second positioning block 22 extending into the second positioning groove 23. By extending the second positioning block 22 into the second positioning groove 23, the two semi-fireproof and wear-resistant sleeves 3 are connected more tightly.

[0026] Working principle: During installation, apply adhesive to the semi-fireproof and wear-resistant sleeve 3 and the wheel 1. Then, align the first positioning block 19 with the first positioning groove 20, insert the limiting protrusion 5 into the annular limiting groove 4, and then screw the second bolt 18 into the threaded hole 15. Through the threaded connection between the second bolt 18 and the threaded hole 15, the second bolt 18 passes through the snap-fit ​​hole 17 and then extends into the snap-fit ​​groove 16. Both semi-fireproof and wear-resistant sleeves 3 are operated in this manner. After installation, install the bearing 8. The clamping device is set up by clamping the outer ring of the bearing 8 against the retaining edge 6, and then installing the clamping block 13 onto the second mounting groove 7 with the first bolt 14, so that the clamping block 13 clamps the outer ring of the bearing 8. Then, the small wheel shaft 10 is inserted into the bearing 8, and the large wheel shaft 11 is pressed against the inner ring of the bearing 8. The small wheel shaft 10 is then threadedly connected to the small wheel shaft 10 through the nut 12. By tightening the nut 12, the nut 12 is pressed against the inner ring of the bearing 8. The small wheel shaft 10 and the large wheel shaft 11 are now installed. Then, the dustproof retaining ring 9 is installed. In summary, the two half fireproof and wear-resistant sleeves 3 of this door hanger can be easily inserted into the annular limiting groove 4, and the two half fireproof and wear-resistant sleeves 3 can be easily and quickly installed on the annular limiting groove 4. One side of the bearing 8 of this door hanger is abutted by the retaining edge 6 set on the wheel 1, and the other side of the bearing 8 is fixed to the wheel 1 by the abutting block 13 of the abutting device, so the bearing 8 will not fall off the wheel 1.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A new fireproof material door wheel, comprising a wheel (1), characterized in that, The outer circumferential surface of the wheel (1) is provided with a first mounting groove (2), and two semi-fireproof and wear-resistant sleeves (3) are fitted into the inner wall of the first mounting groove (2). An annular limiting groove (4) is provided on the inner circumferential surface of the first mounting groove (2). The opposing surfaces of the two semi-fireproof and wear-resistant sleeves (3) are provided with limiting protrusions (5) that match the annular limiting groove (4). The inner circumferential surface of the wheel (1) is provided with a retaining edge (6). The inner circumferential surface of the wheel (1) is provided with a bearing (8). The bearing (8) is located on the outer circumference of the wheel (1). One end of the ring abuts against the retaining edge (6). The inner wall of the wheel (1) is provided with a second mounting groove (7). The inner wall of the second mounting groove (7) is provided with a clamping device. The inner wall of the second mounting groove (7) is provided with a dustproof retaining ring (9). The inner wall of the inner ring of the bearing (8) is provided with a small wheel shaft (10). One end of the small wheel shaft (10) is integrally formed with a large wheel shaft (11). The other end of the small wheel shaft (10) is threaded with a nut (12). The nut (12) abuts against the inner ring of the bearing (8).

2. The novel fireproof material door wheel according to claim 1, characterized in that, The clamping device includes a clamping block (13), which is threadedly connected to the inner wall of the second mounting groove (7) by a first bolt (14), and the clamping block (13) abuts against the outer ring of the bearing (8).

3. The novel fireproof material door wheel according to claim 1, characterized in that, The wheel (1) has a plurality of threaded holes (15) arranged in a circular array on one side surface, which are connected to the first mounting groove (2). The inner wall of the first mounting groove (2) away from the threaded holes (15) has a plurality of snap-fit ​​grooves (16). The plurality of snap-fit ​​grooves (16) correspond one-to-one with the plurality of threaded holes (15). The surface of the limiting protrusion (5) has a plurality of snap-fit ​​holes (17). The plurality of snap-fit ​​holes (17) correspond one-to-one with the plurality of threaded holes (15). The snap-fit ​​holes (17), snap-fit ​​grooves (16) and threaded holes (15) are on a straight line. The threaded holes (15) are threadedly connected to a second bolt (18). One end of the second bolt (18) passes through the snap-fit ​​holes (17) and snap-fit ​​grooves (16).

4. The novel fireproof material door roller according to claim 3, characterized in that, Each of the multiple threaded holes (15) has a concealed groove (21) at one end, and the head of the second bolt (18) is located in the concealed groove (21).

5. The novel fireproof door roller according to claim 1, characterized in that, The inner surface of the limiting protrusion (5) is provided with a plurality of first positioning blocks (19), and the inner wall of the first mounting groove (2) is provided with a plurality of first positioning grooves (20) that match the first positioning blocks (19). The plurality of first positioning grooves (20) correspond one-to-one with the plurality of first positioning blocks (19).

6. The novel fireproof door roller according to claim 1, characterized in that, The semi-fireproof and wear-resistant sleeve (3) has a second positioning block (22) and a matching second positioning groove (23) at both ends, with the second positioning block (22) extending into the second positioning groove (23).

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