Hub oil seal of agricultural machine

Abstract

The utility model discloses an agricultural machine hub oil seal, and relates to the technical field of oil seals. The hub oil seal of the agricultural machine comprises an outer oil seal and an inner oil seal, the shaft sleeve is arranged at the bottom of the outer oil seal in a semi-surrounding manner; the limiting framework is connected with one end of the bottom of the shaft sleeve; the bending part is arranged at the top of the outer oil seal and extends in a fall shape in the horizontal direction; the main sealing lip is arranged at the bottom of the outer oil seal and is connected with the bottom of the inner side of the shaft sleeve; the first spring is arranged on the upper surface of the main sealing lip; the first dustproof lip is arranged on the side, away from the first spring, of the main sealing lip; and the second spring is arranged on the upper surface of the first dustproof lip. The axle oil seal for the agricultural machine solves the problems that an existing axle oil seal for the agricultural machine is simple in structure, generally only one or two seals are adopted, the sealing effect is ordinary, and the service life of the oil seal is seriously affected due to the fact that the oil seal is prone to large-amplitude movement in the using process.

Description

Technical Field

[0001] The utility model relates to the technical field of oil seals, in particular to an agricultural machinery wheel hub oil seal. Background Art

[0002] Oil seal is an annular seal used to seal lubricating oil or grease in mechanical equipment. It is usually made of rubber, metal or synthetic materials, and has good sealing performance and wear resistance. The main function of oil seal is to prevent lubricating oil from leaking from the moving parts of the machine, and to prevent external impurities such as dust and moisture from entering the machine, protecting the machine parts from pollution and wear. Oil seals are widely used in various industrial equipment, automobiles, agricultural machinery and other mechanical fields, and are an important part of ensuring the normal operation of equipment and extending the service life of equipment.

[0003] The existing axle oil seals for agricultural machinery have a simple structure, usually using only one or two seals, with average sealing effect, and the oil seals are prone to large-scale movement during use, which seriously affects the service life of the oil seals. There is currently no effective solution to the above problems. Utility Model Content

[0004] Purpose of the utility model: to provide an agricultural machinery wheel hub oil seal to solve the above-mentioned problems existing in the prior art.

[0005] Technical solution: Agricultural machinery wheel hub oil seal, including:

[0006] External oil seal;

[0007] A shaft sleeve, arranged at the bottom of the outer oil seal in a semi-enclosed shape;

[0008] A limiting frame connected to one end of the bottom of the shaft sleeve;

[0009] The bending portion is arranged at the top of the outer oil seal and extends in a drop shape in the horizontal direction;

[0010] A main sealing lip, arranged at the bottom of the outer oil seal and connected to the inner bottom of the shaft sleeve;

[0011] a first spring, disposed on the upper surface of the main sealing lip;

[0012] A first dustproof lip, arranged on the main sealing lip at a side away from the first spring;

[0013] a second spring, disposed on an upper surface of the first dust lip;

[0014] A second dustproof lip is horizontally arranged on the outer oil seal near the first dustproof lip, and the end thereof is arranged to abut against the inner wall of the shaft sleeve in the vertical direction;

[0015] a first rubber coating layer connected to the outer surface of the sleeve;

[0016] a plurality of third dust lips, disposed on the top of the first rubber coating layer and abutting against the inner wall of the outer oil seal; and

[0017] The second rubber coating layer is arranged on the top of the outer surface of the outer oil seal.

[0018] Preferably, the top of the second rubber coating layer is wavy.

[0019] Preferably, a first chamfer is provided at one end of the second rubber coating layer away from the third dust lip, and second chamfers are provided at both ends of the bottom of the first rubber coating layer.

[0020] Preferably, the second rubber coating layer is further provided with teeth at one end away from the third dust lip.

[0021] Preferably, a flange for reducing friction is provided at the upper end of the first rubber coating layer.

[0022] Preferably, the number of the third dust lips is two, and the two third dust lips are arranged obliquely and in parallel between the outer oil seal and the shaft sleeve.

[0023] Preferably, a pressure relief hole is provided through the side wall of the limiting frame.

[0024] Preferably, spring grooves matching the first spring and the second spring are respectively formed on the upper surface of the main sealing lip and the upper surface of the first dustproof lip.

[0025] Preferably, an inner convex ring and a cross flange are provided on the lower surface of the first rubber coating layer, and the cross flange is located on the left side of the inner convex ring.

[0026] Preferably, the inner wall of the sleeve, the main sealing lip close to the first dust lip and the outer oil seal form a chamber for filling grease, and the chamber is divided into two chambers by the second dust lip.

[0027] Beneficial effect: In the embodiment of the present application, a method of adding multiple sealing lips is adopted, through an outer oil seal; a shaft sleeve is arranged at the bottom of the outer oil seal in a semi-enclosed shape; a limiting frame is connected to one end of the bottom of the shaft sleeve; a bending portion is arranged at the top of the outer oil seal and extends in a drop shape in the horizontal direction; a main sealing lip is arranged at the bottom of the outer oil seal and connected to the inner bottom of the shaft sleeve; a first spring is arranged on the upper surface of the main sealing lip; a first dustproof lip is arranged on the main sealing lip away from the first spring; a second spring is arranged on the upper surface of the first dustproof lip; a second dustproof lip is horizontally arranged on a side close to the first dustproof lip The outer oil seal is arranged on the outer oil seal, and its end is set against the inner wall of the shaft sleeve in the vertical direction; the first rubber coating layer is connected to the outer surface of the shaft sleeve; a plurality of third dust lips are arranged on the top of the first rubber coating layer and are set against the inner wall of the outer oil seal; and the second rubber coating layer is arranged on the top of the outer surface of the outer oil seal, so as to achieve the purpose of increasing the sealing performance, thereby achieving the technical effect of improving the oil seal performance, and further solving the technical problems that the existing axle oil seals for agricultural machinery have a simple structure, usually only use one or two seals, the sealing effect is general, and the oil seals are prone to large-scale movement during use, which seriously affects the service life of the oil seals. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the planar structure of the agricultural machinery wheel hub oil seal of the utility model.

[0029] The accompanying drawings are marked as follows:

[0030] 10. External oil seal; 20. Bushing; 30. Limiting frame; 40. Bending portion; 50. Main sealing lip; 60. First spring; 70. First dustproof lip; 80. Second spring; 90. Second dustproof lip; 100. First rubber coating; 110. Third dustproof lip; 120. Second rubber coating; 130. First chamfer; 140. Second chamfer; 150. Engraved teeth; 160. Flange; 170. Pressure relief hole; 180. Inner convex ring; 190. Cross flange; 200. Chamber. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0034] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] like Figure 1 As shown, the present application relates to an agricultural machinery wheel hub oil seal. The agricultural machinery wheel hub oil seal comprises: an outer oil seal 10; which can prevent lubricating oil leakage and prevent external impurities (such as dust, moisture, etc.) from entering the interior of the equipment. In the present application, the outer oil seal 10 comprises: an outer frame, a rubber coating and a spring; which can achieve a good molding effect. The rubber and the metal frame are bonded by high-temperature vulcanization of an adhesive.

[0036] The shaft sleeve 20 is arranged at the bottom of the outer oil seal 10 in a semi-enclosed shape and can play the role of a bearing, reduce friction and wear, and extend the service life of the equipment. In the present application, the shaft sleeve 20 includes: an inner frame and a rubber coating.

[0037] The limiting frame 30 is connected to one end of the bottom of the shaft sleeve 20, and can achieve good limiting and fixing effects; at the same time, it can also achieve the effect of multiple disassembly and assembly.

[0038] The bending portion 40 is disposed at the top of the outer oil seal 10 and is extended in a step-shaped manner along the horizontal direction; by providing the bending portion 40, the strength of the skeleton can be increased.

[0039] The main sealing lip 50 is disposed at the bottom of the outer oil seal 10 and connected to the inner bottom of the shaft sleeve 20 , so as to achieve the effect of sealing the oil.

[0040] The first spring 60 is arranged on the upper surface of the main sealing lip 50 . By providing the first spring 60 , a certain radial force can be provided to increase the sealing effect.

[0041] The first dustproof lip 70 is disposed on the main sealing lip 50 at a side away from the first spring 60 ; the first dustproof lip 70 is a mud and water lip, which can achieve a good mud and water prevention effect.

[0042] The second spring 80 is disposed on the upper surface of the first dust lip 70 ; by adding the second spring 80 , the mud and water resistance is further improved.

[0043] The second dust lip 90 is horizontally arranged on the outer oil seal 10 near the first dust lip 70, and its end is arranged to abut against the inner wall of the shaft sleeve 20 in the vertical direction; it can prevent muddy water from entering the oil seal and improve the service life of the oil seal.

[0044] The first rubber coating layer 100 is connected to the outer surface of the shaft sleeve 20 , and can achieve a good coating effect, and at the same time, it can also have better corrosion resistance, thereby achieving a good protection effect.

[0045] A plurality of third dust lips 110 are disposed on the top of the first rubber coating layer 100 and are disposed against the inner wall of the outer oil seal 10 ; they can prevent muddy water from entering the interior of the oil seal, thereby improving the service life of the oil seal.

[0046] The second rubber coating layer 120 is disposed on the top of the outer surface of the outer oil seal 10. It can achieve a good coating effect and at the same time, it can also have better corrosion resistance, thereby achieving a good protection effect.

[0047] From the above description, it can be seen that the present application achieves the following technical effects:

[0048] In the embodiment of the present application, a method of adding multiple sealing lips is adopted, through the outer oil seal 10; the shaft sleeve 20 is arranged at the bottom of the outer oil seal 10 in a semi-enclosed shape; the limiting frame 30 is connected to one end of the bottom of the shaft sleeve 20; the bending portion 40 is arranged at the top of the outer oil seal 10 and extends in a drop shape in the horizontal direction; the main sealing lip 50 is arranged at the bottom of the outer oil seal 10 and connected to the inner bottom of the shaft sleeve 20; the first spring 60 is arranged on the upper surface of the main sealing lip 50; the first dustproof lip 70 is arranged on the main sealing lip 50 away from the side of the first spring 60; the second spring 80 is arranged on the upper surface of the first dustproof lip 70; the second dustproof lip 90 is horizontally arranged near the first dustproof lip The outer oil seal 10 is provided on one side of the dust lip 70, and its end is set against the inner wall of the shaft sleeve 20 in the vertical direction; the first rubber coating layer 100 is connected to the outer surface of the shaft sleeve 20; a plurality of third dust lips 110 are arranged on the top of the first rubber coating layer 100 and are set against the inner wall of the outer oil seal 10; and the second rubber coating layer 120 is arranged on the top of the outer surface of the outer oil seal 10, so as to achieve the purpose of increasing the sealing performance, thereby achieving the technical effect of improving the oil seal performance, and further solving the technical problems that the existing axle oil seals for agricultural machinery have a simple structure, usually only one or two seals are used, the sealing effect is general, and the oil seals are prone to large-scale movement during use, which seriously affects the service life of the oil seals.

[0049] Furthermore, the top of the second rubber coating layer 120 is wavy. It can be understood that by adopting the outer diameter design combining the wavy rubber coating with the metal, the stability of the oil seal under vibration is improved while satisfying the sealing performance.

[0050] Furthermore, the second rubber coating layer 120 is provided with a first chamfer 130 at one end away from the third dust lip 110, and the bottom ends of the first rubber coating layer 100 are respectively provided with second chamfers 140. It can be understood that the first chamfer 130 is a front chamfer, which can achieve the effect of installation and correction. The second chamfer 140 is a rear chamfer of the sleeve 20, which can release the extrusion force of the shaft during installation.

[0051] Furthermore, the second rubber coating layer 120 is further provided with a tooth 150 at one end away from the third dust lip 110. It can be understood that this can achieve a positioning effect during product molding.

[0052] Furthermore, a flange 160 for reducing friction is provided at the upper end of the first rubber coating layer 100. It can be understood that the friction can be reduced by adopting the flange 160 design.

[0053] Further, the number of the third dustproof lips 110 is two, and the two third dustproof lips 110 are obliquely and parallelly arranged between the outer oil seal 10 and the shaft sleeve 20. It can be understood that a good waterproof and dustproof effect can be further ensured.

[0054] Furthermore, a pressure relief hole 170 is formed through the side wall of the position limiting frame 30. It can be understood that the oil pressure shock is reduced and the lip lubrication is ensured.

[0055] Furthermore, the upper surface of the main sealing lip 50 and the upper surface of the first dustproof lip 70 are respectively provided with spring grooves matching the first spring 60 and the second spring 80. It can be understood that a good installation and fixing effect of the spring can be ensured.

[0056] Furthermore, the lower surface of the first rubber coating layer 100 is provided with an inner convex ring 180 and a cross flange 190, and the cross flange 190 is located on the left side of the inner convex ring 180. It can be understood that relative sliding with the shaft is avoided.

[0057] Furthermore, the inner wall of the shaft sleeve 20, the main sealing lip 50 near the first dust lip 70, and the outer oil seal 10 enclose a chamber 200 for filling grease, and the chamber 200 is divided into two chambers 200 by the second dust lip 90. It can be understood that by providing the chamber 200 and arranging grease in the chamber 200, the oil seal can achieve lubrication during rotation and reduce wear.

[0058] The utility model also has the following beneficial effects:

[0059] 1. The design of multiple sealing lips solves the defects of the existing design, such as insufficient anti-mud and water sealing ability and short service life;

[0060] 2. The use of the shaft sleeve avoids shaft wear and reduces the surface processing requirements of the shaft;

[0061] 3. The design can be disassembled and assembled multiple times, saving resources during maintenance.

[0062] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings; however, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical scheme of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. Agricultural machinery wheel hub oil seal, characterized in that: include: External oil seal; A shaft sleeve, arranged at the bottom of the outer oil seal in a semi-enclosed shape; A limiting frame connected to one end of the bottom of the shaft sleeve; The bending portion is arranged at the top of the outer oil seal and extends in a drop shape in the horizontal direction; A main sealing lip, arranged at the bottom of the outer oil seal and connected to the inner bottom of the shaft sleeve; a first spring, disposed on the upper surface of the main sealing lip; A first dustproof lip, arranged on the main sealing lip at a side away from the first spring; a second spring, disposed on an upper surface of the first dust lip; A second dustproof lip is horizontally arranged on the outer oil seal near the first dustproof lip, and the end thereof is arranged to abut against the inner wall of the shaft sleeve in the vertical direction; a first rubber coating layer connected to the outer surface of the sleeve; A plurality of third dust lips, arranged on the top of the first rubber coating layer and abutting against the inner wall of the outer oil seal; and The second rubber coating layer is arranged on the top of the outer surface of the outer oil seal.

2. The agricultural machinery wheel hub oil seal according to claim 1, characterized in that: The top of the second rubber coating layer is wavy.

3. The agricultural machinery wheel hub oil seal according to claim 1, characterized in that: A first chamfer is provided at one end of the second rubber coating layer away from the third dust lip, and second chamfers are provided at two ends of the bottom of the first rubber coating layer.

4. The agricultural machinery wheel hub oil seal according to claim 1, characterized in that: The second rubber coating layer is further provided with teeth at one end away from the third dust lip.

5. The agricultural machinery wheel hub oil seal according to claim 1, characterized in that: A flange for reducing friction is provided at the upper end of the first rubber coating layer.

6. The agricultural machinery wheel hub oil seal according to claim 1, characterized in that: The number of the third dust lips is two, and the two third dust lips are arranged obliquely and parallelly between the outer oil seal and the shaft sleeve.

7. The agricultural machinery wheel hub oil seal according to claim 1, characterized in that: A pressure relief hole is formed through the side wall of the position limiting frame.

8. The agricultural machinery wheel hub oil seal according to claim 1, characterized in that: The upper surface of the main sealing lip and the upper surface of the first dustproof lip are respectively provided with spring grooves matching the first spring and the second spring.

9. The agricultural machinery wheel hub oil seal according to claim 1, characterized in that: An inner convex ring and a cross flange are arranged on the lower surface of the first rubber coating layer, and the cross flange is located on the left side of the inner convex ring.

10. The agricultural machinery wheel hub oil seal according to claim 1, characterized in that: The inner wall of the shaft sleeve, the main sealing lip close to the first dust lip and the outer oil seal form a chamber for filling grease, and the chamber is divided into two chambers by the second dust lip.

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