Improved gear box dustproof ring and mounting method thereof

Abstract

The invention provides an improved gear box dustproof ring and a mounting method thereof. The improved gear box dust-proof ring comprises dust-proof strips and a fixing device, the dust-proof strips are connected end to end, and the outer sides of the dust-proof strips are sleeved with the fixing device. The installation method of the improved gear box dustproof ring comprises the steps of cutting off the dustproof strip, cutting off the fixing belt, installing the dustproof strip, installing the fixing belt and the like. According to the improved gear box dustproof ring and the mounting method thereof, the problems that an existing gear box dustproof ring is high in after-sales cost, high in manufacturing and management cost and prone to damage, and consequently dustproof failure is caused are solved.

Description

Technical Field

[0001] The invention relates to the field of dustproof rings, and in particular to an improved gear box dustproof ring and a mounting method thereof. Background Art

[0002] In order to prevent debris from entering the oil seal lip joint surface and causing scratches on the oil seal lip under harsh working conditions, the gearbox usually adds a dustproof device, i.e., a dust ring, where the oil seal contacts the outside world. Existing dust rings are usually designed individually according to the size of the gearbox used, and the dust ring is a full circle. During assembly, it is necessary to pre-insert the dust ring into the parts assembly area, and then assemble the reducer. Once the dust ring falls off, the reducer assembly needs to be disassembled to install the dust ring, which greatly increases the difficulty and cost of after-sales service. In addition, there may be situations where the parts for assembling the dust ring are difficult to disassemble or the parts are damaged during disassembly, which further increases the economic and time costs of after-sales service. Each model of gearbox needs to manufacture a dust ring separately, which cannot be interchanged with each other, and the manufacturing and management costs are high. At the same time, since the dust ring needs to have good airtightness, the diameter will be slightly smaller than the design diameter during manufacturing. The dust ring needs to be enlarged during assembly, which will cause the dust ring to be tight and easy to break. In the case of only the dust ring, the dust ring will fall off if it breaks and lose its dustproof function.

[0003] The existing application number is "201120218031.6", the applicant is "Jiangsu Aerospace Power Electromechanical Co., Ltd.", and the utility model named "Dust Ring" provides a dust ring made of two steel semicircles spliced ​​into a full circle, but it is not suitable for the working conditions of the gearbox. In addition, there are other devices such as dust sleeves that use similar principles, but they are not suitable for the working conditions of the gearbox. Summary of the invention

[0004] In order to solve the problems of high after-sales cost, high manufacturing management cost, easy damage and resulting in dustproof failure of existing gear box dust rings, the present invention provides an improved gear box dust ring and an installation method thereof that solves the above problems.

[0005] An improved dustproof ring for a gear box comprises a dustproof strip and a fixing device. The dustproof strip is connected end to end and the fixing device is sleeved on the outside.

[0006] In a preferred embodiment of the improved gearbox dust ring provided by the present invention, the dust strip comprises an integrated main strip body and side ribs, the side ribs are arranged on the side walls of the main strip body and tilted outward, and the outer side of the main strip body is sleeved with the fixing device. The outer side of the main strip body is provided with a groove, and the groove is connected with the fixing device. The end of the side rib away from the main strip body is a round head structure.

[0007] In a preferred embodiment of the improved dustproof ring for gearbox provided by the present invention, the dustproof strip is arranged at the groove position between the planet carrier and the bearing seat of the gearbox. The inner surface and one side surface of the main strip body are in contact with the bottom and the inner wall of the bearing seat in the groove position, and the other side surface of the main strip body is provided with the side guard; the side guard is away from the end of the main strip body and is in contact with the inner wall of the planet carrier in the groove position.

[0008] In a preferred embodiment of the improved gearbox dust seal provided by the present invention, the fixing device includes a fixing belt and a fixing buckle, the fixing belt is sleeved in the groove outside the main strip body, and the head and tail ends are connected by the fixing buckle. The fixing belt is a steel belt, and the fixing buckle is a steel belt buckle.

[0009] An improved method for installing a dust ring of a gear box comprises: Step 1: Measure the diameter of the groove between the planetary carrier and the bearing seat of the gearbox, cut off the dust strip with a length less than or equal to this diameter, and the fixing belt with a length greater than this diameter; Step 2: Apply glue to the end of the dustproof strip, place the dustproof strip in the groove, make its two sides fit the inner wall of the bearing seat and the inner wall of the planetary carrier in the groove respectively, and then glue the head and tail ends of the dustproof strip together to form a ring-shaped dustproof ring structure; Step 3: Bend one end of the fixing belt and buckle it into the fixing buckle. Then wrap the fixing belt around the outside of the dustproof strip, lock and bend the other end into the fixing buckle to fix it. Finally, bend the limiting protrusion of the fixing buckle inward to press against the fixing belt.

[0010] In a preferred embodiment of the improved gear box dust ring installation method provided by the present invention, a dust strip with a length equal to this diameter is cut in step 1, and the head and tail ends of the dust strip are docked and glued in step 2; if a dust strip with a length less than this diameter is cut in step 1, the dust strip is first stretched in step 2, and then the head and tail ends are docked and glued.

[0011] Compared with the prior art, the improved gear box dust ring and the installation method thereof provided by the present invention have the following beneficial effects: 1. In the present invention, a long dustproof strip is cut as needed and bonded to form a dustproof ring for use, thereby avoiding the problem that different types of gearboxes require different types of dustproof rings and need to open molds and build material numbers separately, thereby reducing manufacturing and management costs.

[0012] 2. In the present invention, the fixing belt and the fixing buckle are designed to be split. A roll of long fixing belt is cut as needed and connected with the fixing buckle to form a clamp structure for use, thereby avoiding the problem that different types of fixing belts need to be molded and built with separate material numbers, thereby reducing manufacturing and management costs.

[0013] 3. In the present invention, the fixing belt and the fixing buckle are assembled into a hoop structure and tied outside the dustproof ring, so that the dustproof ring is more difficult to break. Even if the dustproof ring is broken due to some accident, it can prevent the dustproof ring from falling off and continue to play a certain dustproof role.

[0014] 4. The dust ring and the fixing belt in the present invention are both long rolls that can be cut off and connected as needed, rather than a full-circle design, which greatly improves the convenience of subsequent replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the improved gearbox dust seal; Figure 2 yes Figure 1 Schematic diagram of the structure with the fixture removed; Figure 3 It is a cross-sectional view of the improved gearbox dust seal; Figure 4 yes Figure 3 Cross-section with fixture removed.

[0016] Reference numerals in the figure: dustproof strip 1, main strip body 11, side retaining edge 12, fixing belt 2, fixing buckle 3, limiting protrusion 31, planet carrier 4, bearing seat 5. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] Please also see Figures 1 to 4 , respectively, are the structural schematic diagram and cross-sectional diagram of the improved gearbox dust ring, and the structural schematic diagram and cross-sectional diagram after the fixing device is removed.

[0019] An improved dust ring for a gear box comprises a dust strip 1, a fixing belt 2 and a fixing buckle 3. For the convenience of description, a planet carrier 4 and a bearing seat 5 are also introduced.

[0020] The dustproof strip 1 is a rubber strip, including a main strip body 11 and a side rib 12 of an integral structure. The main strip body 11 has a square cross section, and a flat-bottomed groove is provided on the back side along the length direction. The side rib 12 has a triangular cross section, one end of which is connected to the main strip body 11, and the other end is tilted outward, with a rounded end. A V-shaped groove is formed between the back of the side rib 12 and the side wall of the main strip body 11, with an angle of 60°; the front of the side rib 12 is connected to the front of the main strip body 11.

[0021] The fixing belt 2 is a steel belt, and the fixing buckle 3 is a steel belt buckle. One end of the steel belt is bent to form a hook structure to hook on the buckle, and the steel belt is laid along the groove on the back side of the main strip 11, and after a circle, it is bent in the opposite direction to form another hook structure, which is also hooked on the buckle.

[0022] An improved method for installing a dust ring of a gear box comprises: Step 1: Measure the diameter of the groove between the planetary carrier 4 and the bearing seat 5 of the gearbox, and cut a dust strip 1 slightly smaller than the diameter and a steel belt longer than the diameter as a fixing belt 2 according to this diameter, and prepare a steel belt buckle as a fixing buckle 3.

[0023] Step 2: Apply glue to the end of the cut dust strip 1, and wrap the dust strip 1 around the bottom of the flat-bottomed groove area between the planet carrier 4 and the bearing seat 5. After the installation, the front of the main strip body 11 fits with the bottom of the groove, the right side fits with the inner wall of the bearing seat 5, and the left end round head of the side rib 12 fits with the inner wall of the planet carrier 4, and the two ends are close. Stretch the dust strip 1 appropriately to make the two ends fit together to achieve adhesion. Release it after the adhesion is firm.

[0024] Step 3: bend one end of the fixing belt 2 and buckle it on the fixing buckle 3. After the fixing belt 2 is wrapped around the groove on the outside of the dustproof strip 1, the other end is locked and bent into the fixing buckle 3 to fix it. As the fixing belt 2 is locked, the dustproof strip 1 is compressed. Finally, the limiting protrusion 31 of the fixing buckle 3 is bent inward to press against the fixing belt 2 to prevent it from bouncing back and causing it to loosen.

[0025] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An improved gear box dust seal, characterized in that: The utility model comprises a dustproof strip and a fixing device. The dustproof strip is connected end to end and the fixing device is sleeved on the outer side.

2. The improved gear box dust seal according to claim 1 is characterized in that: The dustproof strip comprises an integrated main strip body and side ribs, wherein the side ribs are arranged on the side walls of the main strip body and tilted outwards, and the fixing device is sleeved on the outer side of the main strip body.

3. The improved gear box dust seal according to claim 2 is characterized in that: A groove is provided on the outer side of the main strip body, and the groove is connected with the fixing device.

4. The improved gear box dust seal according to claim 3 is characterized in that: The end of the side rib away from the main strip body is a round head structure.

5. The improved gear box dust seal according to claim 4 is characterized in that: The dustproof strip is arranged in a groove between the planet carrier and the bearing seat of the gear box.

6. The improved gear box dust seal according to claim 5 is characterized in that: The inner surface and one side surface of the main strip body are in contact with the bottom and the inner wall of the bearing seat in the groove position, and the other side surface of the main strip body is provided with the side guard; the side guard is away from the end of the main strip body and is in contact with the inner wall of the planet carrier in the groove position.

7. The improved gear box dust seal according to any one of claims 3 to 6, characterized in that: The fixing device comprises a fixing belt and a fixing buckle. The fixing belt is sleeved in a groove outside the main strip body, and the head and tail ends are connected by the fixing buckle.

8. The improved gear box dust seal according to claim 7 is characterized in that: The fixing belt is a steel belt, and the fixing buckle is a steel belt buckle.

9. A method for installing an improved dust seal for a gear box according to any one of claims 1 to 8, characterized in that: include: Step 1: Measure the diameter of the groove between the planetary carrier and the bearing seat of the gearbox, cut off the dust strip with a length less than or equal to this diameter, and the fixing belt with a length greater than this diameter; Step 2: Apply glue to the end of the dustproof strip, place the dustproof strip in the groove, make its two sides fit the inner wall of the bearing seat and the inner wall of the planetary carrier in the groove respectively, and then glue the head and tail ends of the dustproof strip together to form a ring-shaped dustproof ring structure; Step 3: Bend one end of the fixing belt and buckle it into the fixing buckle. Then wrap the fixing belt around the outside of the dustproof strip, lock and bend the other end into the fixing buckle to fix it. Finally, bend the limiting protrusion of the fixing buckle inward to press against the fixing belt.

10. A method for installing the improved dust seal of a gear box according to claim 9, characterized in that: If a dust-proof strip having a length equal to the diameter is cut in step 1, then the ends of the dust-proof strip are butt-jointed and glued together in step 2; if a dust-proof strip having a length less than the diameter is cut in step 1, then the dust-proof strip is firstly stretched and then the ends are butt-jointed and glued together in step 2.

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