Engineering machinery double-end floating oil seal

Abstract

The utility model discloses an engineering machinery double-end floating oil seal which comprises a first oil seal ring, a second oil seal ring is arranged at the bottom of the first oil seal ring, an upper fixing block is connected to the surface of the second oil seal ring in a clamped mode, a connecting rod is fixedly connected to the top of the upper fixing block, and a lower fixing block is connected to the surface of the connecting rod in a sliding mode. Through the arrangement of the anti-skid lines, a user can rotate the rotating block more conveniently, the comfort level of the user is improved, through the arrangement of the supporting sleeve, the rotating rod can be supported in an auxiliary mode, the phenomenon that the rotating rod inclines in the rotating process is prevented, and through the arrangement of the guide rod, the rotating rod can rotate more conveniently. The transmission plate can be limited, the moving range of the transmission plate is limited, through the arrangement of the opening, the clamping rod can completely pass through the opening for mechanical transmission, and the phenomenon that the clamping rod is clamped at the opening due to the fact that the width of the opening is too narrow is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of floating oil seals, in particular to a double-head floating oil seal for engineering machinery. Background Art

[0002] Floating oil seal is a common name for floating seal. It is a kind of mechanical seal in dynamic seal. It is mainly used for end face sealing under low speed, heavy load and harsh working conditions. It has super strong sealing performance in harsh working environments such as coal powder, mud, water vapor, etc. It is a compact mechanical seal. It has the advantages of strong anti-pollution ability, wear resistance, impact resistance, reliable operation, automatic compensation of end face wear and simple structure. Floating oil seal is mainly composed of fixed ring, floating ring, spring and sealing device. Its working principle is that when the equipment shaft rotates, lubricating oil is injected into the encapsulation cavity. There is a certain friction between the equipment shaft and the floating oil seal, so that the floating ring always keeps in contact with the equipment shaft. In the process of relative movement between the floating ring and the shaft, the lubricating oil is pumped to the outside of the shaft through the gap of the encapsulation cavity to form an oil film. The contact between this oil film and the shaft can form a lubricating oil seal to block external air and impurities from entering the equipment and prevent lubricating oil leakage. The spring of the floating oil seal enables the floating ring to adapt to shaft deformation and axial displacement caused by other factors. Floating oil seals are widely used in engineering machinery, coal mining machinery, various conveyors, sand processing equipment, concrete equipment and other fields. For example, bulldozer travel mechanism, scraper conveyor head sprocket assembly, tunneling machine loading mechanism and cantilever section, continuous coal mining machine left and right cutting drum and reducer, etc. In addition, some construction machinery, loaders, graders, cranes, mixers, and mining machines are also used.

[0003] At present, the existing double-head floating oil seals for engineering machinery need to be adjusted and fixed by tightening and loosening the fixing bolts when fixing the double-head floating oil seals. The current adjustment method is manual adjustment and the fixing bolts are used to fix the double-head floating oil seals, which makes the installation and disassembly of the double-head floating oil seals more cumbersome, and the fixing bolts are prone to getting stuck, affecting the convenience of the operator. Therefore, a double-head floating oil seal for engineering machinery is proposed to solve the above problems. Utility Model Content

[0004] 1. Technical problems to be solved by the utility model

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a double-headed floating oil seal for engineering machinery, aiming to solve the problem that the existing double-headed floating oil seal for engineering machinery needs to be adjusted and fixed by tightening and loosening the fixing bolts when fixing the double-headed floating oil seal, while the current adjustment method is manual adjustment and fixing with the fixing bolts makes the installation and disassembly of the double-headed floating oil seal more cumbersome, and the fixing bolts are prone to getting stuck, affecting the convenience of the operator.

[0006] 2. Technical solution

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A double-head floating oil seal for engineering machinery comprises a first oil seal ring, a second oil seal ring is arranged at the bottom of the first oil seal ring, an upper fixed block is clamped on the surface of the second oil seal ring, a connecting rod is fixedly connected to the top of the upper fixed block, a lower fixed block is slidably connected to the surface of the connecting rod, the lower fixed block is clamped with the upper fixed block, the surface of the connecting rod is slidably connected to a limiting assembly, a maintenance plate is arranged on the top of the limiting assembly, the interior of the limiting assembly is fixedly connected to the limiting block, and a positioning mechanism is arranged inside the limiting assembly.

[0009] As a preferred solution of the utility model, the positioning mechanism includes a rotating block, the back of the rotating block is fixedly connected to a rotating rod, the back of the rotating rod is fixedly connected to a first bevel gear, the back of the first bevel gear is meshed with a second bevel gear, the bottom of the second bevel gear is fixed with a first gear, the back of the first gear is meshed with a second gear, the bottoms of the first gear and the second gear are both movably connected to the bottom of the inner wall of the limit assembly through a bearing, the top of the second gear is movably connected to a movable plate through a rotating shaft, the bottom of the movable plate is movably connected to a connecting block through a rotating shaft, the outer side of the connecting block is fixedly connected to a transmission plate, the outer side of the transmission plate is fixedly connected to a clamping rod, and the outer side of the clamping rod passes through the interior of the connecting rod.

[0010] As a preferred solution of the utility model, the surface of the rotating block is provided with anti-skid patterns, and the anti-skid patterns are used in conjunction with the rotating block.

[0011] As a preferred solution of the utility model, a support sleeve is provided on the surface of the rotating rod, and the front side of the support sleeve is movably connected to the front side of the inner wall of the limiting assembly.

[0012] As a preferred solution of the utility model, a guide rod is fixedly connected inside the limit assembly, and the guide rod passes through the transmission plate and is slidably connected to the transmission plate.

[0013] As a preferred solution of the utility model, openings are provided on both sides of the limit assembly, the width of the openings is greater than the width of the clamping rod, and the openings are used in conjunction with the clamping rod.

[0014] As a preferred solution of the utility model, the surface of the limit assembly is provided with an anti-rust coating, and the anti-rust coating is used in conjunction with the limit assembly.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model can facilitate the user to rotate the rotating block more conveniently through the setting of the anti-slip pattern, thereby improving the comfort of the user; through the setting of the support sleeve, the rotating rod can be auxiliary supported to prevent the rotating rod from tilting when rotating; through the setting of the guide rod, the transmission plate can be limited to limit the movement range of the transmission plate; through the setting of the opening, the clamping rod can be completely passed through the opening for mechanical transmission, thereby avoiding the phenomenon that the clamping rod is stuck at the opening due to the narrow width of the opening; through the setting of the rust-proof coating, the limiting component can be protected, thereby improving the service life of the limiting component; the first oil seal ring and the second oil seal ring are butt-jointed together, and then installed and fixed by the upper fixing block, the connecting rod and the lower fixing block; the first oil seal ring and the second oil seal ring do not need to be connected by fixing bolts, and the floating oil seal has the effect of quick disassembly, and will not affect the convenience of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a double-head floating oil seal for engineering machinery according to the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the first oil seal ring of a double-head floating oil seal for engineering machinery according to the utility model;

[0020] Figure 3 This is a schematic diagram of the upper fixed block structure of a double-head floating oil seal for engineering machinery according to the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of a limit assembly of a double-head floating oil seal for engineering machinery according to the utility model;

[0022] Figure 5 The utility model is a schematic diagram of the side structure of a limit assembly of a double-head floating oil seal for engineering machinery.

[0023] In the figure: 1. first oil seal ring; 101. second oil seal ring; 102. upper fixed block; 103. connecting rod; 104. lower fixed block; 2. limit assembly; 201. maintenance plate; 202. limit block; 3. positioning mechanism; 301. rotating block; 302. rotating rod; 303. first bevel gear; 304. second bevel gear; 305. first gear; 306. second gear; 307. movable plate; 308. connecting block; 309. transmission plate; 310. clamping rod; 4. anti-slip pattern; 5. support sleeve; 6. guide rod; 7. opening; 8. anti-rust coating. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with 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 of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0025] Example:

[0026] See also Figure 1-Figure 5 The present embodiment provides a double-head floating oil seal for engineering machinery, comprising a first oil seal ring 1, a second oil seal ring 101 is arranged at the bottom of the first oil seal ring 1, an upper fixing block 102 is clamped on the surface of the second oil seal ring 101, a connecting rod 103 is fixedly connected to the top of the upper fixing block 102, a lower fixing block 104 is slidably connected to the surface of the connecting rod 103, the lower fixing block 104 is clamped with the upper fixing block 102, the surface of the connecting rod 103 is slidably connected to a limiting component 2, a maintenance plate 201 is arranged on the top of the limiting component 2, the limiting component 2 is fixedly connected to the limiting block 202 inside, and a positioning mechanism 3 is arranged inside the limiting component 2. When the double-head floating oil seal for engineering machinery is in use, it is installed and fixed by the upper fixing block 102, the connecting rod 103 and the lower fixing block 104, and the first oil seal ring 1 and the second oil seal ring 101 do not need to be connected by fixing bolts.

[0027] In this embodiment, if Figure 5 As shown, the positioning mechanism 3 includes a rotating block 301, the back of the rotating block 301 is fixedly connected to a rotating rod 302, the back of the rotating rod 302 is fixedly connected to a first bevel gear 303, the back of the first bevel gear 303 is meshed with a second bevel gear 304, the bottom of the second bevel gear 304 is fixed with a first gear 305, the back of the first gear 305 is meshed with a second gear 306, the bottoms of the first gear 305 and the second gear 306 are both movably connected to the bottom of the inner wall of the limiting component 2 through a bearing, and the top of the second gear 306 A movable plate 307 is movably connected via a rotating shaft, a connecting block 308 is movably connected to the bottom of the movable plate 307 via a rotating shaft, a transmission plate 309 is fixedly connected to the outer side of the connecting block 308, a clamping rod 310 is fixedly connected to the outer side of the transmission plate 309, and the outer side of the clamping rod 310 penetrates into the interior of the connecting rod 103. Through the various structures inside the positioning mechanism 3, the upper fixed block 102 and the lower fixed block 104 can be fixed, avoiding the tedious work of adjusting and fixing by tightening and loosening the fixing bolts.

[0028] In this embodiment, if Figure 5As shown, the surface of the rotating block 301 is provided with anti-slip grooves 4, and the anti-slip grooves 4 are used in conjunction with the rotating block 301. The surface of the rotating rod 302 is provided with a supporting sleeve 5, and the front side of the supporting sleeve 5 is movably connected to the front side of the inner wall of the limiting component 2. Through the setting of the anti-slip grooves 4, the user can more conveniently rotate the rotating block 301, which improves the user's comfort, and provides auxiliary support for the rotating rod 302 to prevent the rotating rod 302 from tilting during rotation.

[0029] In this embodiment, if Figure 5 The interior of the limit assembly 2 is fixedly connected with a guide rod 6, which passes through the transmission plate 309 and is slidably connected to the transmission plate 309. Openings 7 are provided on both sides of the limit assembly 2. The width of the opening 7 is greater than the width of the clamping rod 310. The opening 7 is used in conjunction with the clamping rod 310. Through the setting of the guide rod 6, the transmission plate 309 can be limited, limiting the movement range of the transmission plate 309, so that the clamping rod 310 can completely pass through the opening 7 for mechanical transmission, thereby avoiding the phenomenon that the clamping rod 310 is stuck at the opening 7 due to the width of the opening 7 being too narrow.

[0030] In this embodiment, if Figure 5 As shown, the surface of the limit component 2 is provided with an anti-rust coating 8, and the anti-rust coating 8 is used in conjunction with the limit component 2. Through the setting of the anti-rust coating 8, the limit component 2 can be protected, thereby increasing the service life of the limit component 2.

[0031] Working principle: When the double-head floating oil seal for construction machinery is used, first, the first oil seal ring 1 and the second oil seal ring 101 are connected together, and then the upper fixing block 102, the connecting rod 103 and the lower fixing block 104 are installed and fixed, and the limit assembly 2 is installed on the surface of the connecting rod 103. The user rotates the rotating block 301 through the anti-slip groove 4, and the rotating block 301 drives the rotating rod 302 to rotate, and the rotating rod 302 drives the first bevel gear 303 to rotate, and the first bevel gear 303 meshes with the second bevel gear 304 to drive the second bevel gear 304 to rotate, and the first bevel gear 303 is engaged with the second bevel gear 304 to drive the second bevel gear 304 to rotate, and the first bevel gear 303 is engaged with the second bevel gear 304 to drive the second bevel gear 304 to rotate. The second bevel gear 304 drives the first gear 305 to rotate, the first gear 305 meshes with the second gear 306 to drive the second gear 306 to rotate, the second gear 306 drives the movable plate 307 to rotate, the movable plate 307 pushes the connecting block 308 to move outward, the connecting block 308 drives the transmission plate 309 to move outward, the transmission plate 309 drives the clamping rod 310 to move outward, the clamping rod 310 enters the interior of the connecting rod 103, so that the upper fixing block 102 and the lower fixing block 104 can efficiently fix the first oil seal ring 1 and the second oil seal ring 101.

[0032] All technical features in this embodiment can be freely combined according to actual needs.

[0033] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A double-ended floating oil seal for engineering machinery, comprising a first oil seal ring (1), characterized in that: A second oil seal ring (101) is arranged at the bottom of the first oil seal ring (1), an upper fixed block (102) is clamped on the surface of the second oil seal ring (101), a connecting rod (103) is fixedly connected to the top of the upper fixed block (102), a lower fixed block (104) is slidably connected to the surface of the connecting rod (103), the lower fixed block (104) is clamped with the upper fixed block (102), a limiting component (2) is slidably connected to the surface of the connecting rod (103), a maintenance plate (201) is arranged on the top of the limiting component (2), the limiting block (202) is fixedly connected inside the limiting component (2), and a positioning mechanism (3) is arranged inside the limiting component (2).

2. The double-head floating oil seal for engineering machinery according to claim 1, characterized in that: The positioning mechanism (3) comprises a rotating block (301), the back of the rotating block (301) is fixedly connected to a rotating rod (302), the back of the rotating rod (302) is fixedly connected to a first bevel gear (303), the back of the first bevel gear (303) is meshed with a second bevel gear (304), the bottom of the second bevel gear (304) is provided with a first gear (305), the back of the first gear (305) is meshed with a second gear (306), the first gear (305) and the second gear (306) are connected to each other. The bottom of (306) is movably connected to the bottom of the inner wall of the limit assembly (2) through a bearing, the top of the second gear (306) is movably connected to a movable plate (307) through a rotating shaft, the bottom of the movable plate (307) is movably connected to a connecting block (308) through a rotating shaft, the outer side of the connecting block (308) is fixedly connected to a transmission plate (309), the outer side of the transmission plate (309) is fixedly connected to a clamping rod (310), and the outer side of the clamping rod (310) passes through the interior of the connecting rod (103).

3. A double-head floating oil seal for engineering machinery according to claim 2, characterized in that: The surface of the rotating block (301) is provided with anti-skid patterns (4), and the anti-skid patterns (4) are used in conjunction with the rotating block (301).

4. The double-ended floating oil seal for engineering machinery according to claim 2, characterized in that: A support sleeve (5) is sleeved on the surface of the rotating rod (302), and the front side of the support sleeve (5) is movably connected to the front side of the inner wall of the limiting assembly (2).

5. The double-ended floating oil seal for engineering machinery according to claim 2, characterized in that: A guide rod (6) is fixedly connected inside the limiting assembly (2), and the guide rod (6) passes through the transmission plate (309) and is slidably connected to the transmission plate (309).

6. The double-head floating oil seal for engineering machinery according to claim 2, characterized in that: Openings (7) are provided on both sides of the position limiting assembly (2); the width of the opening (7) is greater than the width of the clamping rod (310); and the opening (7) is used in conjunction with the clamping rod (310).

7. The double-ended floating oil seal for engineering machinery according to claim 2, characterized in that: The surface of the position limiting component (2) is provided with an anti-rust coating (8), and the anti-rust coating (8) is used in conjunction with the position limiting component (2).

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