A rolling wheel cage lug sealing structure and a rolling wheel cage lug using the same

Abstract

The application discloses a rolling wheel cage ear sealing structure and a rolling wheel cage ear using the same, and relates to the technical field of vertical shaft lifting guidance, which comprises a ring-shaped groove sealing seat and a sealing cover with a U-shaped cross section. A sealing groove is formed in the outer peripheral wall of the ring-shaped groove sealing seat, and a floating seal is arranged in the sealing groove. The sealing cover is buckled on the outer periphery of the ring-shaped groove sealing seat, the ring-shaped inner peripheral wall of the sealing cover is in contact with the outer periphery of the floating seal, and a through hole matched with the main shaft is formed in the end of the sealing cover away from the rolling wheel. In the application, the rotation of the rolling wheel drives the ring-shaped groove sealing seat to rotate. When rotating, the floating seal is affected by the centrifugal force and is close to the sealing cover, so that the sealing of the main shaft connecting port is realized, the sealing effect is improved, the rotating part is not in direct contact with the main shaft, the abrasion of the main shaft is reduced, and the service life is prolonged.

Description

Technical Field

[0001] This invention relates to the field of vertical shaft hoisting and guiding technology, and in particular to a roller can ear sealing structure and a roller can ear using the same. Background Technology

[0002] Roller canisters have high lifting speed, heavy load, and operate in harsh environments. The combination of water, slag, and debris on site causes the roller canisters to have a short lifespan. The main reasons are that water and debris enter the bearing cavity, corroding the bearings, causing large vibrations in the lifting container and roller jamming, which leads to the short lifespan of the roller canisters.

[0003] Existing technologies for dynamic sealing of roller can ear bearing cavities typically use labyrinth seals and TC oil seals for dust and water protection. However, in operating environments with water spray, slag, and debris, these seals are prone to failure. This leads to debris entering the bearing cavity, causing excessive vibration in the lifting container, roller jamming, and a short lifespan for the roller can ear. As slag accumulates, it damages the seal and enters the bearing cavity. Furthermore, the TC seal is in direct contact with the shaft, and the wear on the shaft during operation is irreparable, making it not worth repairing and resulting in significant waste.

[0004] Therefore, there is an urgent need for a roller can ear sealing structure that provides a good seal and ensures the service life of the roller can ear. Summary of the Invention

[0005] The purpose of this invention is to provide a roller can ear sealing structure and a roller can ear using the same, so as to solve the problems existing in the prior art, improve the sealing effect of the floating seal by utilizing centrifugal force, reduce wear on the main shaft, and ensure the service life of the roller can ear.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides a roller can ear sealing structure, including an annular groove sealing seat for connection with the roller hub and a sealing cover with a U-shaped cross section. A sealing groove is formed on the outer peripheral wall of the annular groove sealing seat, and a floating seal is provided in the sealing groove. The sealing cover is fastened to the outer periphery of the annular groove sealing seat, and the annular inner peripheral wall of the sealing cover contacts the outer periphery of the floating seal. A through hole matching the main shaft is formed at the end of the sealing cover away from the roller.

[0007] Preferably, the inner peripheral wall of the sealing cover is spaced apart from the annular groove sealing seat to form a sewage discharge chamber, and the sealing cover has a notch for sewage discharge at the corner near the roller can ear base.

[0008] Preferably, the bottom horizontal height of the notch is not higher than the bottom horizontal height of the sewage discharge chamber.

[0009] Preferably, the distance between the notch and the main shaft of the roller can ear is 7-10mm.

[0010] Preferably, the outer edge of the annular groove sealing seat at the end away from the roller is inclined toward the roller.

[0011] Preferably, the cross-sections of the sealing groove and the floating seal are both trapezoidal, with the top edge of the trapezoid located close to the main shaft of the roller can ear.

[0012] Preferably, the floating seal is made of felt.

[0013] Preferably, the roller can ear sealing structure further includes a bushing and a sealing ring. The bushing is matched with the main shaft of the roller can ear. The bushing is located in the inner cavity of the annular groove sealing seat. The sealing ring is provided between the bushing and the annular groove sealing seat.

[0014] The present invention also provides a roller can ear using the above-mentioned roller can ear sealing structure, including a base, a buffer device, a swing arm and a roller, wherein the annular groove sealing seat is installed on the hub of the roller, and the through hole of the sealing cover is fixedly connected to the roller main shaft, or the sealing cover is fixedly connected to the swing arm.

[0015] Preferably, the end face of the sealing cover away from the roller is fitted to the swing arm.

[0016] The present invention achieves the following main technical effects compared to the prior art:

[0017] The rotation of the roller drives the annular groove seal seat to rotate. During rotation, the floating seal is affected by centrifugal force and comes close to the sealing cover, thus achieving a seal at the spindle connection and improving the sealing effect. At the same time, the rotating part has no direct contact with the spindle, reducing wear on the spindle and increasing its service life.

[0018] Other solutions of the present invention achieve the following technical effects compared with the prior art:

[0019] The dirt adhering to the annular groove sealing seat is thrown by centrifugal force onto the inner circumferential wall of the sealing cover and enters the drain chamber, and is discharged through the opening of the sealing cover, thus avoiding the accumulation of dirt.

[0020] The bushing and sealing ring combination provides a secondary seal, further improving the sealing effect. At the same time, the bushing can effectively protect the spindle and extend its service life. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the annular groove sealing seat of the present invention;

[0023] Figure 2 This is a front view of the sealing cover of the present invention;

[0024] Figure 3 This is a left view of the sealing cover of the present invention;

[0025] Figure 4 Front view of the can ear of the rim roller with sealing structure of the present invention;

[0026] Figure 5 Left view of the can ear of the rim roller with the sealing structure provided in this invention;

[0027] Figure 6 A top view of the can ear of the rim roller with the sealing structure provided for this invention;

[0028] Figure 7 A cross-sectional view of the roller portion of the can ear of the side wheel roller, which is provided with a sealing structure for the present invention;

[0029] Figure 8 Front view of the can ear of the central roller in the sealing structure of this invention;

[0030] Figure 9 Left view of the can ear of the middle roller, which provides the sealing structure for this invention;

[0031] Figure 10 A top view of the can ear of the central roller, which provides the sealing structure for this invention;

[0032] Figure 11 A cross-sectional view of the roller portion of the can ear of the central roller, which is provided with the sealing structure of the present invention;

[0033] The components include: 1. Sealing structure; 2. Annular groove sealing seat; 3. Sealing cover; 4. Sealing groove; 5. Floating seal; 6. Notch; 7. Bushing; 8. Sealing ring; 9. Base; 10. Buffer device; 11. Swing arm; 12. Roller; 13. Main shaft. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] The purpose of this invention is to provide a roller can ear sealing structure and a roller can ear using the same, so as to solve the problems existing in the prior art, improve the sealing effect of the floating seal by utilizing centrifugal force, reduce wear on the main shaft, and ensure the service life of the roller can ear.

[0036] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Please refer to the following: Figures 1-11 As shown, a roller can ear sealing structure 1 is provided, including an annular groove sealing seat 2 and a U-shaped sealing cover 3. The sealing cover 3 includes an annular inner peripheral wall and a planar inner peripheral wall. The annular groove sealing seat 2 is used to connect with the hub of the roller 12 and rotates synchronously with the roller 12. A sealing groove 4 is formed on the outer peripheral wall of the annular groove sealing seat 2, and a floating seal 5 is provided in the sealing groove 4. The sealing cover 3 is fastened to the outer periphery of the annular groove sealing seat 2, and the annular inner peripheral wall of the sealing cover 3 contacts the outer periphery of the floating seal 5. The floating seal 5 is preferably made of felt, and the expansion property of the felt itself ensures its contact with the inner wall of the sealing cover 3. As a result, the sealing cover 3 has a through hole at the end away from the roller that matches the main shaft 13. The function of the sealing cover 3 is to seal the end opening of the annular groove sealing seat 2 away from the roller 12, so that the entry path of dirt is limited to the annular inner circumferential wall of the sealing cover 3 and the annular groove sealing seat 2. The sealing structure 1 uses the rotation of the roller 12 to drive the annular groove sealing seat 8 to rotate. When rotating, the floating seal will be affected by centrifugal force and come close to the sealing cover 3, thereby achieving a seal at the connection of the main shaft 13 and improving the sealing effect. At the same time, the rotating part has no direct contact with the main shaft 13, reducing the wear on the main shaft 13 and improving its service life.

[0038] Because mine water corrodes metal, to ensure the contact effect between the floating seal 5 and the inner wall of the sealing cover 3, a stainless steel ring or electroplated hard chrome can be added to the inner wall of the sealing cover 3 to improve the corrosion resistance of the inner wall.

[0039] Since the floating seal 5 cannot completely prevent the entry of dirt, the inner peripheral wall of the sealing cover 3 and the annular groove sealing seat 2 are spaced apart to form a sewage discharge chamber. The sealing cover 3 has a notch 6 at the corner near the roller can ear base 9. Dirt adhering to the annular groove sealing seat 2 after passing over the floating seal 5 is thrown to the inner peripheral wall of the sealing cover 3 by centrifugal force and enters the sewage discharge chamber. It is discharged through the notch 6 of the sealing cover 3 to avoid the accumulation of dirt. At the same time, the notch 6 is set close to the base 9, which can effectively prevent water, slag and debris from the top from directly entering the sewage discharge chamber. In order to improve the sewage discharge effect of the notch 6, the bottom horizontal height of the notch 6 is not higher than the bottom horizontal height of the sewage discharge chamber.

[0040] Setting the notch 6 will affect the structural strength of the sealing cover 3. Since the through hole of the sealing cover 3 matches the main shaft 13, it will be under load during normal operation. Therefore, the distance between the notch 6 and the main shaft 13 of the roller can ear is set to 7-10mm to ensure the supporting strength of the sealing cover 3 on the main shaft 13.

[0041] The outer edge of the annular groove sealing seat 2, which is away from the roller 12, can be tilted towards the roller 12 to make it easier to discharge dirt.

[0042] In this embodiment, the cross-sections of the sealing groove 4 and the floating seal 5 are both trapezoidal, with the top edge of the trapezoid close to the main shaft 13 of the roller can ear. This structure can increase the contact area between the floating seal 5 and the sealing cover 3 and the annular groove sealing seat 2, thereby improving the sealing effect.

[0043] The roller can ear sealing structure 1 also includes a bushing 7 and a sealing ring 8. The bushing 7 is matched with the roller can ear main shaft 13 and can be interference-fitted on the main shaft 13. The bushing 7 is located in the inner cavity of the annular groove sealing seat 2. A sealing ring 8 is provided between the bushing 7 and the annular groove sealing seat 2. The bushing 7 and the sealing ring 8 can provide secondary sealing and further improve the sealing effect. At the same time, the bushing 7 can effectively protect the main shaft 13 and improve the service life of the main shaft 13. In addition to the sewage discharge effect, the notch 6 can also help reduce the amount of dirt contacting the secondary seal, that is, reduce the contamination of the secondary seal and improve the service life of the secondary seal.

[0044] This sealing structure 1 is applicable to the side wheel roller can ear and the middle wheel roller can ear, wherein the side wheel roller can ear refers to the roller can ear with a swing arm 11 on one side, and the middle wheel roller can ear refers to the roller can ear with a swing arm 11 on both sides.

[0045] The present invention also provides a roller can ear that applies the above-mentioned roller can ear sealing structure 1. The main structure is the same as that of a conventional roller can ear, including a base 9, a buffer device 10, a swing arm 11 and a roller 12. The difference is that the annular groove sealing seat 2 is installed on the hub of the roller 12, and the through hole of the sealing cover 3 is fixedly connected to the main shaft 13 of the roller 12, or the sealing cover 3 is fixedly connected to the swing arm 11.

[0046] The end face of the sealing cover 3 away from the roller 12 is fitted with the swing arm 11. The swing arm 11 helps to block the dirt falling from above, which can more effectively prevent the dirt from entering the drain chamber directly through the opening 6.

[0047] Any adaptive changes made according to actual needs are within the scope of protection of this invention.

[0048] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0049] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A roller can ear sealing structure, characterized in that, It includes an annular groove seal seat for connecting to the roller hub and a U-shaped sealing cover. The annular groove seal seat has a sealing groove on its outer peripheral wall and a floating seal is provided in the sealing groove. The sealing cover is fastened to the outer periphery of the annular groove seal seat. The annular inner peripheral wall of the sealing cover contacts the outer periphery of the floating seal. The end of the sealing cover away from the roller has a through hole that matches the main shaft. The inner circumferential wall of the sealing cover is spaced apart from the annular groove sealing seat to form a sewage discharge chamber, and the sealing cover has a notch for sewage discharge at the corner near the roller can ear base.

2. The roller can ear sealing structure according to claim 1, characterized in that, The bottom of the notch is not higher than the bottom of the drain chamber.

3. The roller can ear sealing structure according to claim 1, characterized in that, The distance between the notch and the main shaft of the roller can ear is 7-10mm.

4. The roller can ear sealing structure according to claim 1, characterized in that, The outer edge of the annular groove sealing seat at the end away from the roller is inclined toward the roller.

5. The roller can ear sealing structure according to claim 1, characterized in that, Both the sealing groove and the floating seal have trapezoidal cross sections, with the top edge of the trapezoid positioned close to the main shaft of the roller can ear.

6. The roller can ear sealing structure according to claim 1, characterized in that, The floating seal is made of felt.

7. The roller can ear sealing structure according to claim 1, characterized in that, The roller can ear sealing structure also includes a bushing and a sealing ring. The bushing is matched with the main shaft of the roller can ear. The bushing is located in the inner cavity of the annular groove sealing seat. The sealing ring is provided between the bushing and the annular groove sealing seat.

8. A roller can ear using the roller can ear sealing structure as described in any one of claims 1-7, characterized in that, It includes a base, a buffer device, a swing arm, and a roller. The annular groove sealing seat is installed on the hub of the roller. The through hole of the sealing cover is fixedly connected to the main shaft of the roller, or the sealing cover is fixedly connected to the swing arm.

9. The roller can ear according to claim 8, characterized in that, The end face of the sealing cover away from the roller is fitted to the swing arm.

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