Box type oil seal structure suitable for muddy water prevention of agricultural machinery

Abstract

The utility model discloses a box type oil seal structure suitable for muddy water prevention of agricultural machinery, which comprises rubber, and a stainless steel spring is nested in the rubber; a metal framework is arranged in the rubber, a first rubber lip is arranged at the top of the rubber, the top of the first rubber lip is connected with the inner wall of the shaft sleeve, a second rubber lip is arranged at the top of the rubber, and the top of the second rubber lip is connected with the inner wall of the shaft sleeve; the metal framework is connected with the rubber in a vulcanization mode; the second rubber lip is arranged in a bent mode and located on the right side of the first rubber lip. According to the muddy water prevention box type oil seal structure suitable for the agricultural machinery, the first rubber lip and the second rubber lip are installed, external impurities cannot enter the box type oil seal through the first rubber lip and the second rubber lip, and then the box type oil seal has high sealing performance; therefore, the first rubber lip and the second rubber lip can play a role in protecting the box type oil seal.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural machinery transmission system technical field, concretely is a box type oil seal structure suitable for agricultural machinery mud water prevention. BACKGROUND

[0002] Agricultural machinery often faces harsh working environment when working in the field, especially in muddy environments such as rice fields, and box type oil seals can effectively block mud and pollutants in working conditions, protecting key components of agricultural machinery from damage.

[0003] The existing box type oil seal will be damaged due to long-term contact with soil, weeds, straw, mud, corrosive chemicals, etc., and agricultural machinery not only needs to operate continuously in such an environment, but also needs to be attacked by various complex media such as herbicides and lubricating oil.

[0004] To solve the above defects, the box type oil seal with publication number CN217736275U realizes the sealing cooperation between the inner oil seal and the assembly parts such as the axle through the sealing ring of the assembly end of the inner oil seal; the sealing cooperation between the assembly end of the outer oil seal and the assembly end of the inner oil seal is realized by the sealing lip of the buckling end of the outer oil seal abutting the assembly end of the inner oil seal; the sealing cooperation between the buckling end of the inner oil seal and the assembly end of the outer oil seal is realized by the labyrinth ring of the buckling end of the inner oil seal abutting the assembly end of the outer oil seal; when assembling the box type oil seal, glue can also be applied to the assembly end of the outer oil seal to realize the sealing cooperation between the outer oil seal and the assembly parts such as the hub; thus, the box type oil seal of the utility model can realize effective and stable sealing and dustproof and waterproof functions, prolonging the service life of the product.

[0005] In the actual use of the above device, although the sealing effect can be improved by the sealing lip, when the working environment is relatively harsh, the sealing lip may be damaged due to long-term operation, thereby affecting the service life of the oil seal.

[0006] Therefore, we propose a box type oil seal structure suitable for agricultural machinery mud water prevention, which can well solve the above problems. UTILITY MODEL CONTENTS

[0007] The utility model aims to provide a box type oil seal structure suitable for agricultural machinery mud water prevention to solve the problem of sealing lip damage due to long-term operation when the working environment is relatively harsh on the market, thereby affecting the service life of the oil seal.

[0008] In order to achieve the above object, the utility model provides the following technical scheme: a box type oil seal structure suitable for agricultural machinery mud water prevention, including rubber, the inside of rubber is nested with stainless steel spring;

[0009] The inside of the rubber is provided with a metal framework, and the top of the rubber is provided with a first rubber lip, and the top of the first rubber lip is connected with the inner wall of the shaft sleeve, the top of the rubber is provided with a second rubber lip, and the top of the second rubber lip is connected with the inner wall of the shaft sleeve.

[0010] Preferably, the metal framework is connected with the rubber by vulcanization.

[0011] Preferably, the second rubber lip is arranged in a bending mode, and the second rubber lip is located at the right side of the first rubber lip.

[0012] Preferably, the left side of the rubber is provided in a wave structure.

[0013] Preferably, the right side of the rubber is provided with a third rubber lip, and the right side of the third rubber lip is connected with the inner wall of the shaft sleeve.

[0014] Preferably, the right side of the rubber is provided with a fourth rubber lip, and the right side of the fourth rubber lip is connected with the inner wall of the shaft sleeve.

[0015] Preferably, the third rubber lip and the fourth rubber lip are arranged in an up-down structure, and the third rubber lip and the fourth rubber lip are connected in a radial sealing mode.

[0016] Compared with the prior art, the utility model has the advantages that the box type oil seal structure suitable for agricultural machinery mud water prevention has good sealing property and long service life, the sealing property of the box type oil seal can be improved through the use of the first rubber lip and the second rubber lip, and the service life of the box type oil seal can be improved through the use of the third rubber lip and the fourth rubber lip, and the specific contents are as follows:

[0017] (1) the first rubber lip and the second rubber lip are arranged, the impurities in the outside cannot enter the inside of the box type oil seal through the first rubber lip and the second rubber lip, so that the box type oil seal has strong sealing property, and the first rubber lip and the second rubber lip can protect the box type oil seal;

[0018] (2) the third rubber lip and the fourth rubber lip are arranged, the machining process requirement of the surface of the shaft body can be reduced through the use of the third rubber lip and the fourth rubber lip, the cost is reduced, the shaft is not abraded, and the service life of the box type oil seal is improved;

[0019] (3) The third rubber lip and the fourth rubber lip are arranged in an up-down structure, and the third rubber lip and the fourth rubber lip are connected in a radial sealing mode, so that the high load of the agricultural machinery and the complex vibration and impact working conditions can be adapted, the stable operation of the transmission system can be ensured, and the failure rate of the vehicle is reduced;

[0020] (4) The second rubber lip is arranged in a bending mode, and the second rubber lip is located on the right side of the first rubber lip, so that the second rubber lip has large elastic deformation and good adaptability to the movement, and the long and thin structure can greatly reduce the friction torque, reduce heat generation, and avoid rubber aging;

[0021] (5) The shaft sleeve is arranged on the top of the first rubber lip and connected with the inner wall of the shaft sleeve, the rubber top is provided with the second rubber lip, so that the machining process requirement of the surface of the shaft body can be greatly reduced, the cost is reduced, the shaft is not abraded, only the oil seal needs to be replaced, and the maintenance cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a front view structural schematic diagram of the utility model;

[0023] Figure 2 It is a shaft sleeve side view structural schematic diagram of the utility model;

[0024] Figure 3 It is a rubber rear view structural schematic diagram of the utility model;

[0025] Figure 4 It is a rubber and metal framework connection structural schematic diagram of the utility model;

[0026] Figure 5 It is a rubber and metal framework separation structural schematic diagram of the utility model.

[0027] In the drawing: 1, rubber; 101, first rubber lip; 102, second rubber lip; 103, third rubber lip; 104, fourth rubber lip; 2, shaft sleeve; 3, stainless steel spring; 4, metal framework. DETAILED DESCRIPTION

[0028] 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. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0029] Embodiment one: a box type oil seal structure suitable for agricultural machinery mud water prevention solves the problem that the sealing lip may be damaged due to long time operation when the existing working environment is relatively harsh, thereby affecting the service life of the oil seal. The service life of the box type oil seal is improved by using the first rubber lip 101 and the second rubber lip 102. Disclosed are:

[0030] The rubber 1 is internally nested with a stainless steel spring 3; the rubber 1 is internally provided with a metal framework 4, and the top of the rubber 1 is provided with a first rubber lip 101, and the top of the first rubber lip 101 is connected and arranged with the inner wall of the shaft sleeve 2. The rubber 1 is provided with a second rubber lip 102 at the top, and the top of the second rubber lip 102 is connected and arranged with the inner wall of the shaft sleeve 2. The second rubber lip 102 is arranged in a bent manner, and the second rubber lip 102 is located at the right side of the first rubber lip 101;

[0031] The use of the first rubber lip 101 enables the first rubber lip 101 to support and limit the shaft sleeve 2, so that the second rubber lip 102 has a suitable interference amount, thereby preventing external large particle impurities from entering the inside and damaging the lip, causing sealing failure. The second rubber lip 102 can well cope with the eccentric situation, effectively prevent the entry of external foreign matter, and has a large elastic deformation due to the design of the bent structure, has good adaptability to the movement, and the slender structure can also greatly reduce the friction torque and reduce the heat generation, avoid the aging of the rubber 1, thereby improving the sealing performance of the first rubber lip 101 and the second rubber lip 102.

[0032] Embodiment two: a box type oil seal structure suitable for agricultural machinery mud water prevention solves the problem of short service life of the existing box type seal. The service life of the box type seal is improved by using the third rubber lip 103 and the fourth rubber lip 104. Disclosed are:

[0033] The rubber 1 is provided with a third rubber lip 103 at the right side, and the right side of the third rubber lip 103 is connected and arranged with the inner wall of the shaft sleeve 2. The rubber 1 is provided with a fourth rubber lip 104 at the right side, and the right side of the fourth rubber lip 104 is connected and arranged with the inner wall of the shaft sleeve 2. The third rubber lip 103 and the fourth rubber lip 104 are arranged in an upper and lower structure, and are connected in a radial sealing manner;

[0034] In the use of agricultural machinery, due to the harsh use scene, in order to avoid impurities from entering the inside of the machinery and causing damage, the box type oil seal is needed to protect the machinery. Since the third rubber lip 103 and the fourth rubber lip 104 are radially sealed, the design of multiple lip ports can significantly improve the service life of the sealing element, thereby avoiding the entry of impurities into the inside of the box type oil seal, so that the box type oil seal can efficiently seal the mechanical parts, thereby reducing the wear of the mechanical parts.

[0035] Embodiment three: a box type oil seal structure suitable for agricultural machinery mud water prevention solves the problem of high cost of existing box type seal, by using the shaft sleeve 2, thereby reducing the cost of using the box type seal, discloses:

[0036] The left side section of the rubber 1 is provided in a wave structure, and the metal framework 4 is connected with the rubber 1 through vulcanization;

[0037] By using the shaft sleeve 2, the rubber 1 can avoid direct contact with the mechanical shaft body, thereby greatly reducing the processing requirement of the surface of the shaft body, reducing the cost, and not grinding the shaft, only replacing the oil seal, reducing the maintenance cost, and through the use of the metal framework 4, the rubber 1 has good strength, thereby effectively playing the sealing role of the rubber 1.

[0038] Working principle: when using the box type oil seal structure suitable for agricultural machinery mud water prevention, first, by using the first rubber lip 101, the first rubber lip 101 can play a supporting and limiting role on the shaft sleeve 2, thereby preventing external large particles from entering the inside and causing sealing failure, and the second rubber lip 102 can well cope with the eccentric situation, and has good adaptability to the leakage, and the slender structure can also greatly reduce the friction torque, reduce the heat generation, avoid the aging of the rubber 1, thereby improving the sealing performance of the box type oil seal.

[0039] In the use of agricultural machinery, due to the relatively harsh use scene, in order to avoid impurities from entering the inside of the machine and causing damage, a box type oil seal is needed to play a protective role on the machine, and the design of multiple lips can significantly improve the service life of the sealing element, so as to avoid impurities from entering the inside of the box type oil seal, thereby reducing the wear of the mechanical parts.

[0040] By using the shaft sleeve 2, the rubber 1 can avoid direct contact with the mechanical shaft body, thereby greatly reducing the processing requirement of the surface of the shaft body, reducing the cost, and not grinding the shaft, only replacing the oil seal, thereby effectively playing the sealing role of the rubber 1.

[0041] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0042] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. A box type oil seal structure suitable for agricultural machinery mud water resistance, comprising rubber (1), the inside of the rubber (1) is nested with stainless steel spring (3); characterized in that The inside of the rubber (1) is provided with metal framework (4), and the top of the rubber (1) is provided with first rubber lip (101), and the top of the first rubber lip (101) is connected with the inner wall of the shaft sleeve (2), the top of the rubber (1) is provided with second rubber lip (102), and the top of the second rubber lip (102) is connected with the inner wall of the shaft sleeve (2).

2. The box type oil seal structure for preventing mud water for agricultural machinery according to claim 1, characterized in that: The metal framework (4) and the rubber (1) are connected by vulcanization.

3. The box type oil seal structure for preventing mud water for agricultural machinery according to claim 1, characterized in that: The second rubber lip (102) is arranged in a bending manner, and the second rubber lip (102) is located on the right side of the first rubber lip (101).

4. The box type oil seal structure for preventing mud water for agricultural machinery according to claim 1, characterized in that: The left side of the rubber (1) is arranged in a wave structure.

5. The box type oil seal structure for preventing mud water for agricultural machinery according to claim 1, characterized in that: The right side of the rubber (1) is provided with third rubber lip (103), and the right side of the third rubber lip (103) is connected with the inner wall of the shaft sleeve (2).

6. The box type oil seal structure for preventing mud water for agricultural machinery according to claim 1, characterized in that: The right side of the rubber (1) is provided with fourth rubber lip (104), and the right side of the fourth rubber lip (104) is connected with the inner wall of the shaft sleeve (2).

7. The box oil seal structure for preventing mud water for agricultural machinery according to claim 5, characterized in that: The third rubber lip (103) and the fourth rubber lip (104) are arranged in an up-down structure, and the third rubber lip (103) and the fourth rubber lip (104) are connected in a radial sealing manner.

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