Muddy-water-resistant axle oil seal of agricultural machine

Abstract

The utility model relates to the technical field of axle oil seals, in particular to an agricultural machinery muddy water resistant axle oil seal which comprises an oil seal body, a lap joint groove is formed in the outer wall of the oil seal body, a dust cover is in lap joint with the inner side of the lap joint groove, and the dust cover is connected with the oil seal body in a clamped mode through a pressing mechanism. The pressing mechanism comprises a butt joint assembly, a rotary extrusion assembly and an abutting assembly, the butt joint assembly is used for preliminarily abutting the dust cover to the oil seal body, the rotary extrusion assembly is used for being matched with the butt joint assembly to unlock the position of the dust cover, and the abutting assembly is used for being matched with the rotary assembly to lock the position of the dust cover. The butt joint assembly comprises a plurality of movable rods slidably connected into the dust cover, and rotating grooves are formed in the positions, located on the outer sides of the movable rods, in the dust cover. The dustproof cover is simple in structure and convenient to operate, workers can conveniently and rapidly disassemble and assemble the dustproof cover, time and labor are saved, and working efficiency is further improved.

Description

Technical Field

[0001] This utility model relates to the field of axle oil seal technology, specifically to an agricultural machinery axle oil seal resistant to mud and water. Background Technology

[0002] Axle oil seals are one of the important sealing components in the chassis system. Because automobiles operate under harsh conditions for extended periods, external mud, water, dust, and particulate impurities can enter the main sealing cavity. To address this issue, OEMs often purchase and install two oil seals simultaneously. However, this method is not only complex and labor-intensive, but the two oil seals also cannot achieve a perfect fit. After a period of use, the gap between the two oil seals widens, allowing external mud, water, dust, and particulate impurities to still enter the sealing area, resulting in an unsatisfactory sealing effect.

[0003] To address the aforementioned technical problems, Chinese Patent No. CN217977362U discloses a mud-proof axle oil seal, comprising an inner oil seal and an outer oil seal. The inner oil seal includes an inner rubber body and an inner skeleton embedded therewith, with an inner sealing lip provided on the inner rubber body. The outer oil seal includes an outer rubber body and an outer skeleton embedded therewith, with an outer sealing lip provided on the outer rubber body. The inner skeleton and the outer sealing lip are press-fitted together, and the outer sealing lip includes a main lip and a secondary lip, forming a sealing cavity for accommodating lubricating wax between the main lip and the secondary lip.

[0004] Although the existing technical solution mentioned above adds a dust cover to better prevent external impurities from entering the sealed area, the dust cover is snapped into the oil seal through a mounting hole. The edge of the mounting hole is embedded inside the oil seal. Installation requires forceful squeezing, and disassembly requires forceful prying. This is not only time-consuming and laborious, but also easily causes wear or breakage of parts. It is difficult for workers to quickly remove the dust cover to inspect, clean, or replace the dust cover in the sealed area, thus affecting work efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a mud- and water-resistant axle oil seal for agricultural machinery, in order to solve the problem mentioned in the background art where the dust cover is snapped onto the oil seal through an installation hole, the edge of the installation hole is embedded inside the oil seal, requiring forceful squeezing during installation and forceful prying during disassembly. This is not only time-consuming and laborious, but also easily causes wear or breakage of parts. It is difficult for workers to quickly remove the dust cover to inspect, clean, or replace the dust cover in the sealed area, thus affecting work efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A mud- and water-resistant axle oil seal for agricultural machinery includes an oil seal body. An overlapping groove is formed on the outer wall of the oil seal body, and a dust cover overlaps inside the overlapping groove. The dust cover is engaged with the oil seal body via a pressing mechanism. The pressing mechanism includes a docking component, a rotary pressing component, and an abutting component. The docking component is used to initially dock the dust cover onto the oil seal body. The rotary pressing component is used to unlock the position of the dust cover in cooperation with the docking component. The abutting component is used to lock the position of the dust cover in cooperation with the rotary component.

[0008] As a preferred embodiment of this utility model, the docking assembly includes multiple sets of movable rods slidably connected inside the dust cover. A rotating groove is provided inside the dust cover on the outside of the movable rods. A rotating plate is slidably connected to the inside of the rotating groove. The rotating plate is rotatably connected to the movable rods. A first spring is installed between both ends of one side of the rotating plate and the inner wall of the rotating groove.

[0009] As a preferred embodiment of this utility model, the dust cover has a retraction groove on the side near the oil seal body, a locking block is installed at one end of the movable rod, a docking groove is opened on the side of the overlapping groove inside the oil seal body, the inner side of the overlapping groove is connected to the inner side of the docking groove, a locking block is installed at one end of the movable rod, and the docking groove and the locking block are slidably connected.

[0010] As a preferred embodiment of this utility model, the rotary extrusion assembly includes an installation groove located inside the oil seal body on one side of the docking groove. A chassis is rotatably connected to the inner side of the installation groove. A second spring is installed at both ends of the top of the chassis. A docking plate is installed at the top of the second spring. A positioning block is installed at the top of the docking plate. A positioning groove is provided at the bottom of the locking block to engage with the positioning block.

[0011] As a preferred embodiment of this utility model, the abutting component includes abutting grooves formed at both ends of the inner wall of the mounting groove, a third spring is installed inside the abutting groove, and an abutting block is installed at one end of the third spring.

[0012] As a preferred embodiment of this utility model, the abutting block and the abutting groove are slidably connected, and a fixing block is installed at both ends of the top of the locking block, and a fixing groove is opened at the bottom of the abutting block to engage with the fixing block.

[0013] As a preferred embodiment of this utility model, the outer wall of the dust cover is provided with an extension groove, and one end of the movable rod extending to the inner side of the extension groove is rotatably connected to a torsion plate. Both ends of the locking block and the opposite ends of the two sets of abutting blocks are provided with inclined surfaces. The cross-section of the locking block is T-shaped, and the two sets of inclined surfaces fit together.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, the dust cover is initially connected to the oil seal body by the docking component. The rotating extrusion component, in conjunction with the docking component, unlocks the position of the dust cover. The abutment component, in conjunction with the rotating component, locks the position of the dust cover. The structure is simple and easy to operate, allowing workers to quickly install and remove the dust cover, saving time and effort and further improving work efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a partial cross-sectional view of the oil seal body and dust cover of this utility model;

[0018] Figure 3 This is a partial three-dimensional structural diagram of the dust cover of this utility model;

[0019] Figure 4 This is a partial cross-sectional view of the pressing mechanism of this utility model.

[0020] In the diagram: 1. Oil seal body; 2. Dust cover; 3. Movable rod; 4. Torsion plate; 5. Rotating plate; 6. Retraction groove; 7. Locking block; 8. Docking groove; 9. Chassis; 10. Docking plate; 11. Positioning block; 12. Abutment groove; 13. Abutment block; 14. Fixing block; 15. Inclined surface. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] Example:

[0023] Please see Figures 1-4 This utility model provides a technical solution:

[0024] A mud-resistant axle oil seal for agricultural machinery includes an oil seal body 1. The outer wall of the oil seal body 1 has an overlapping groove, and a dust cover 2 overlaps inside the overlapping groove. The dust cover 2 is engaged with the oil seal body 1 via a pressing mechanism. The pressing mechanism includes a docking component, a rotary pressing component, and an abutting component. The docking component is used to initially dock the dust cover 2 onto the oil seal body 1. The rotary pressing component is used to unlock the position of the dust cover 2 in cooperation with the docking component. The abutting component is used to lock the position of the dust cover 2 in cooperation with the rotary component. In use, the device allows the dust cover 2 to be initially docked onto the oil seal body 1 via the docking component, the rotary pressing component to unlock the position of the dust cover 2 in cooperation with the docking component, and the abutting component to lock the position of the dust cover 2 in cooperation with the rotary component. The device has a simple structure, is easy to operate, and allows workers to quickly install and remove the dust cover 2, saving time and effort and further improving work efficiency.

[0025] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the docking assembly includes multiple sets of movable rods 3 slidably connected inside the dust cover 2. A rotating groove is provided inside the dust cover 2 on the outside of the movable rods 3. A rotating plate 5 is slidably connected to the inside of the rotating groove. The rotating plate 5 is rotatably connected to the movable rods 3. A first spring is installed between the two ends of one side of the rotating plate 5 and the inner wall of the rotating groove. First, the dust cover 2 is overlapped on the inside of the overlap groove. At this time, the locking block 7 retracts into the inside of the retraction groove 6, which does not prevent the dust cover 2 from being pushed into the overlap groove for initial engagement.

[0026] In this embodiment, as Figure 1 , Figure 2 and Figure 3As shown, the dust cover 2 has a retraction groove 6 on the side near the oil seal body 1, and a locking block 7 is installed at one end of the movable rod 3. A mating groove 8 is provided inside the oil seal body 1 on one side of the overlapping groove, and the inner side of the overlapping groove communicates with the inner side of the mating groove 8. The locking block 7 is installed at one end of the movable rod 3, and the mating groove 8 and the locking block 7 are slidably connected. The rotary extrusion assembly includes an installation groove located inside the oil seal body 1 on one side of the mating groove 8. A base 9 is rotatably connected to the inner side of the installation groove. Second springs are installed at both ends of the top of the base 9, and a mating plate 10 is installed at the top of the second springs. A positioning block 11 is installed at the top of the mating plate 10. A positioning block 11 is installed at the bottom of the locking block 7. Positioning block 11 engages with the positioning groove. Then, holding the torsion plate 4, press the movable rod 3 downwards to drive the rotating plate 5 to stretch the first spring. The two ends of the locking block 7 contact the abutment blocks 13 on both sides, and their inclined surfaces 15 contact each other. The abutment block 13 is squeezed, causing the third spring to retract. After the locking block 7 and the fixed block 14 installed on it continue to move downwards and offset the abutment block 13, the abutment block 13 rebounds. At this time, the positioning block 11 engages with the positioning groove, compresses the second spring of the docking plate 10 to retract, and then pulls back a distance. The fixed block 14 engages with the inside of the fixed groove. The abutment block 13 and the docking plate 10 press the locking block 7 together, completing the positioning and installation of the dust cover 2.

[0027] In this embodiment, as Figure 1 , Figure 2 and Figure 4 As shown, the abutting assembly includes abutting grooves 12 formed at both ends of the inner wall of the mounting groove. A third spring is installed inside the abutting groove 12, and an abutting block 13 is installed at one end of the third spring. The abutting block 13 and the abutting groove 12 are slidably connected. Fixed blocks 14 are installed at both ends of the top of the locking block 7. A fixing groove is formed at the bottom end of the abutting block 13 to engage with the fixing block 14. An extension groove is formed on the outer wall of the dust cover 2. A torsion plate 4 is rotatably connected to one end of the movable rod 3 that extends to the inner side of the extension groove. Inclined surfaces 15 are formed at both ends of the locking block 7 and at the opposite ends of the two sets of abutting blocks 13. The cross-section of the locking block 7 is T-shaped. When the inclined surfaces 15 are in contact with each other, and further, when it is necessary to separate the dust cover 2, the twist plate 4 can be pinched again to press down the movable rod 3 to move the locking block 7 down. At the same time, the positioning block 11 and the positioning groove can drive the docking plate 10 and the two sets of first springs to move. After the fixing block 14 is away from the inside of the fixing groove, the positioning block 11 and the positioning groove base plate 9 can be rotated again. After the locking block 7 is misaligned from the abutting block 13, the edge of the dust cover 2 can be grasped and pulled outward to separate it from the oil seal body 1. At this time, the dust cover 2 can be inspected and maintained, and whether mud and water impurities have entered the sealing area.

[0028] The implementation principle of the mud-resistant axle oil seal for agricultural machinery in this embodiment is as follows: The dust cover 2 is overlapped inside the overlap groove. At this time, the locking block 7 retracts inside the retraction groove 6, without hindering the dust cover 2 from being pushed into the overlap groove for initial engagement. The torsion plate 4 is held in place, and the movable rod 3 is pressed downwards, causing the rotating plate 5 to stretch the first spring. Both ends of the locking block 7 contact the abutment blocks 13 on both sides, and their inclined surfaces 15 contact each other. The abutment blocks 13 are squeezed, causing the third spring to retract. After the locking block 7 and the fixed block 14 installed on it continue to move downwards and offset the abutment blocks 13, the abutment blocks 13 spring back. At this time, the positioning block 11 engages in the positioning groove, compressing the second spring of the contact plate 10 to retract, and then is pulled back again. After a short distance, the fixing block 14 is inserted into the inner side of the fixing groove, and the abutment block 13 and the docking plate 10 press the locking block 7 together, completing the positioning and installation of the dust cover 2. When it is necessary to separate the dust cover 2, the torsion plate 4 can be pinched again to press down the movable rod 3 to move the locking block 7 down. At the same time, the positioning block 11 and the positioning groove can drive the docking plate 10 and the two sets of first springs to move, so that the fixing block 14 is away from the inner side of the fixing groove. Then, the positioning block 11 and the positioning groove base plate 9 can be rotated again. After the locking block 7 is misaligned with the abutment block 13, the edge of the dust cover 2 can be grasped and pulled outward to separate it from the oil seal body 1. At this time, the dust cover 2 can be inspected and maintained, and the sealing area can be checked for mud and water impurities.

[0029] The control method of this utility model is through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mud- and water-resistant axle oil seal for agricultural machinery, comprising an oil seal body (1), characterized in that: The outer wall of the oil seal body (1) is provided with an overlap groove, and a dust cover (2) overlaps on the inner side of the overlap groove. The dust cover (2) is engaged with the oil seal body (1) through a pressing mechanism. The pressing mechanism includes a docking component, a rotary extrusion component and an abutment component. The docking component is used to initially dock the dust cover (2) onto the oil seal body (1). The rotary extrusion component is used to cooperate with the docking component to unlock the position of the dust cover (2). The abutment component is used to cooperate with the rotary component to lock the position of the dust cover (2).

2. The agricultural machinery mud-resistant axle oil seal according to claim 1, characterized in that: The docking assembly includes multiple sets of movable rods (3) slidably connected inside the dust cover (2). A rotating groove is provided inside the dust cover (2) on the outside of the movable rods (3). A rotating plate (5) is slidably connected inside the rotating groove. The rotating plate (5) is rotatably connected to the movable rods (3). A first spring is installed between the two ends of one side of the rotating plate (5) and the inner wall of the rotating groove.

3. The agricultural machinery mud- and water-resistant axle oil seal according to claim 2, characterized in that: The dust cover (2) has a retraction groove (6) on one side near the oil seal body (1), and a locking block (7) is installed at one end of the movable rod (3). The oil seal body (1) has a docking groove (8) on one side of the overlapping groove. The inner side of the overlapping groove is connected to the inner side of the docking groove (8). The locking block (7) is installed at one end of the movable rod (3), and the docking groove (8) and the locking block (7) are slidably connected.

4. The agricultural machinery mud-resistant axle oil seal according to claim 3, characterized in that: The rotary extrusion assembly includes an installation groove located inside the oil seal body (1) on one side of the docking groove (8). A chassis (9) is rotatably connected to the inside of the installation groove. A second spring is installed at both ends of the top of the chassis (9). A docking plate (10) is installed at the top of the second spring. A positioning block (11) is installed at the top of the docking plate (10). A positioning groove that engages with the positioning block (11) is opened at the bottom of the locking block (7).

5. The agricultural machinery mud-resistant axle oil seal according to claim 4, characterized in that: The abutting component includes abutting grooves (12) formed at both ends of the inner wall of the mounting groove, a third spring is installed inside the abutting groove (12), and an abutting block (13) is installed at one end of the third spring.

6. The agricultural machinery mud-resistant axle oil seal according to claim 5, characterized in that: The abutting block (13) and the abutting groove (12) are slidably connected. The top two ends of the locking block (7) are equipped with fixing blocks (14). The bottom end of the abutting block (13) is provided with a fixing groove that engages with the fixing block (14).

7. The agricultural machinery mud-resistant axle oil seal according to claim 6, characterized in that: The outer wall of the dust cover (2) is provided with an extension groove. The end of the movable rod (3) extending to the inner side of the extension groove is rotatably connected to a torsion plate (4). Both ends of the locking block (7) and the opposite ends of the two sets of abutting blocks (13) are provided with inclined surfaces (15). The cross section of the locking block (7) is T-shaped, and the two sets of inclined surfaces (15) fit together.

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