Improved gear box dustproof ring

Abstract

The utility model provides an improved gear box dustproof ring. 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 improved gear box dustproof ring solves 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, so that dustproof failure is caused, and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to dustproof ring field, concretely relates to an improved gear box dustproof ring. BACKGROUND

[0002] In order to prevent sundries from entering the oil seal lip joint surface and causing the oil seal lip scratch under the harsh working condition of gear box, dustproof device, i.e. dustproof ring, is usually added to the place where oil seal and outside contact. The existing dustproof ring is usually designed separately according to the size of gear box used, and the dustproof ring is a whole circle. When assembling, the part assembling dustproof ring needs to be pre-sleeved, and then the speed reducer is assembled. Once the dustproof ring falls off, the dustproof ring needs to be assembled by disassembling the speed reducer, which greatly increases the difficulty and cost of after-sales, and may exist the condition that the part assembling dustproof ring is difficult to disassemble or disassembled damaged parts, further increasing the economic cost and time cost of after-sales. Each model of gear box needs to manufacture dustproof ring separately, and cannot be exchanged with each other, which is high in manufacturing and management cost. At the same time, since the dustproof ring needs to have good airtightness, the diameter during manufacturing will be slightly smaller than the design diameter, and the dustproof ring needs to be enlarged during assembly, which will cause the dustproof ring to be tight and easy to break. In the case of only dustproof ring, the dustproof ring will fall off and lose the dustproof effect when it breaks.

[0003] In the utility model with the application number of "201120218031.6", the applicant of "Jiangsu Aerospace Power Machinery and Electrical Co. Ltd.", and the name of "dustproof ring", a dustproof ring is provided by two steel semicircles spliced into a whole circle, but it is not suitable for the working condition of gear box. In addition, there are devices such as dustproof sleeve using similar principles, but they are not suitable for the working condition of gear box. UTILITY MODEL CONTENTS

[0004] In order to solve the problems of high after-sales cost, high manufacturing and management cost, easy damage and dustproof failure of the existing gear box dustproof ring, the utility model provides an improved gear box dustproof ring to solve the above problems.

[0005] An improved gear box dustproof ring, comprising a dustproof strip and a fixing device, the dustproof strip is connected head to tail, and the outer side is sleeved with the fixing device, the dustproof strip comprises an integral main strip body and a side stop edge, the side stop edge is arranged on the side wall of the main strip body and inclined outward, and the outer side of the main strip body is sleeved with the fixing device; the dustproof strip is arranged at the groove position between the planet carrier and the bearing seat of the gear box, the inner face and one side face of the main strip body are attached to the bottom and the bearing seat side inner wall in the groove position, and the other side face of the main strip body is provided with the side stop edge; the end part of the side stop edge away from the main strip body is attached to the planet carrier side inner wall in the groove position.

[0006] In a preferable embodiment of the improved dustproof ring for gear box, 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 stop away from the main strip body is in a round head structure.

[0007] In a preferable embodiment of the improved dustproof ring for gear box, the fixing device comprises a fixing belt and a fixing buckle, the fixing belt is sleeved in the groove outside the main strip body, and the first end and the second end are connected through the fixing buckle. The fixing belt is a steel belt, and the fixing buckle is a steel belt buckle.

[0008] Compared with the prior art, the improved dustproof ring for gear box has the following beneficial effects:

[0009] 1. In the utility model, a long dustproof strip is cut according to needs, and the dustproof ring is formed by adhesion, so that the problem that different models of gear boxes need different models of dustproof rings and need to be separately opened and molded and separately built material numbers is avoided, and manufacturing and management costs are reduced.

[0010] 2. In the utility model, the fixing belt and the fixing buckle are designed to be split, a long fixing belt is cut according to needs, and the fixing buckle is connected to form a hoop structure, so that the problem that different models of fixing belts need to be separately opened and molded and separately built material numbers is avoided, and manufacturing and management costs are reduced.

[0011] 3. In the utility model, the fixing belt and the fixing buckle are assembled into a hoop structure and are bundled outside the dustproof ring, so that the dustproof ring is more difficult to break. Even if the dustproof ring is disconnected due to some accidents, the dustproof ring can also be prevented from falling off and continue to play a certain dustproof role.

[0012] 4. In the utility model, the dustproof ring and the fixing belt are both selected to be cut according to needs and are connected by themselves, instead of being designed as a whole, so that the convenience of subsequent replacement is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structure diagram of the improved dustproof ring for gear box;

[0014] Figure 2 is Figure 1 a structure diagram of the improved dustproof ring for gear box;

[0015] Figure 3 is a sectional view of the improved dustproof ring for gear box;

[0016] Figure 4 is Figure 3 a sectional view of the improved dustproof ring for gear box.

[0017] In the drawing, the reference signs are as follows: dustproof strip 1, main strip body 11, side stop 12, fixing belt 2, fixing buckle 3, limiting protrusion 31, planet carrier 4, bearing seat 5. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0019] Please refer to Figures 1 to 4 , respectively, the structure diagram and the cross-sectional view of the improved gear box dust ring, and the structure diagram and the cross-sectional view after removing the fixing device.

[0020] An improved gear box dust ring, comprising a dust strip 1, a fixed band 2 and a fixed buckle 3. For easy description, another planetary carrier 4 and bearing seat 5 are introduced.

[0021] The dust strip 1 is a rubber strip, comprising a main strip body 11 and a side stop edge 12 of integral structure. The cross section of the main strip body 11 is square, and a flat bottom groove is arranged on the back side along the length direction. The cross section of the side stop edge 12 is triangular, one end of which is connected with the main strip body 11, and the other end is inclined outward, and the end is a round head. A V-shaped groove is formed between the back of the side stop edge 12 and the side wall of the main strip body 11, and the included angle is 60°; the front of the side stop edge 12 is connected with the front of the main strip body 11.

[0022] The fixed band 2 is a steel band, and the fixed buckle 3 is a steel band buckle. One end of the steel band is bent to form a hook structure hooked on the buckle, and the steel band is laid along the groove on the back side of the main strip body 11, and after one turn, it is bent in the opposite direction to form another hook structure, which is also hooked on the buckle.

[0023] The installation method of the improved gear box dust ring comprises:

[0024] Step 1: measure the diameter of the recessed position between the planetary carrier 4 and the bearing seat 5 of the gear box, and cut the dust strip 1 with a length slightly smaller than the diameter according to the diameter, and the steel band with a length greater than the diameter as the fixed band 2, and prepare a steel band buckle as the fixed buckle 3.

[0025] Step 2: apply adhesive to the end of the cut dust strip 1, and wrap the dust strip 1 around the flat bottom groove area between the planetary carrier 4 and the bearing seat 5. After setting, the front of the main strip body 11 is attached to the bottom of the groove, the right side is attached to one side of the inner wall of the bearing seat 5, the left end of the side stop edge 12 is attached to one side of the inner wall of the planetary carrier 4, and the two ends are close to each other. The dust strip 1 is appropriately lengthened so that the two ends are attached and adhered. After the adhesion is stable, it is loosened.

[0026] Step 3: one end of the fixing band 2 is buckled on the fixing buckle 3, and the other end is locked and buckled in the fixing buckle 3 after being wrapped around the groove outside the dust strip 1. With the locking of the fixing band 2, the dust strip 1 is pressed tightly. Finally, the limiting protrusion 31 of the fixing buckle 3 is bent inward to resist the fixing band 2, preventing the spring from resetting and loosening.

[0027] The above is only an embodiment of the present application, and does not limit the patent range of the present application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, is also included in the patent protection range of the present application.

Claims

1. An improved dust seal for a gear box, characterized by: The dustproof strip includes a dustproof strip and a fixing device. The dustproof strip is connected end to end and the fixing device is sleeved on the outside. The dustproof strip includes an integral main strip body and a side guard. The side guard is provided on the side wall of the main strip body and is inclined outward. The fixing device is sleeved on the outside of the main strip body. The dustproof strip is located in the recessed position between the planetary carrier and the bearing seat of the gearbox. The inner surface and one side of the main strip body are attached to the bottom of the recessed position and the inner wall of the bearing seat. The other side of the main strip body is provided with the side guard. The end of the side guard away from the main strip body is attached to the inner wall of the planetary carrier in the recessed position.

2. The improved dust seal for gear case as claimed in claim 1 wherein: The outer side of the main strip is provided with a groove, which is connected to the fixing device.

3. The improved dust seal for a gear case as claimed in claim 2 wherein: The end of the side guard away from the main strip has a rounded shape.

4. The improved gearbox dust seal according to any one of claims 1 to 3, characterized in that: The fixing device includes a fixing strap and a fixing buckle. The fixing strap is fitted into a groove on the outside of the main strip, and the two ends are connected by the fixing buckle.

5. The improved gearbox dust seal according to claim 4, characterized in that: The fixing strap is a steel strap, and the fixing buckle is a steel strap buckle.

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