CN220151887U

CN220151887U - Waterproof sealing structure of transmission shaft

Info

Publication number: CN220151887U
Application number: CN202321695613.2U
Authority: CN
Inventors: 凌义德; 王基桂
Original assignee: Maanshan Aaima Sealing Technology Co ltd
Current assignee: Maanshan Aaima Sealing Technology Co ltd
Priority date: 2023-06-30
Filing date: 2023-06-30
Publication date: 2023-12-08
Anticipated expiration: 2033-06-30

Abstract

The utility model discloses a waterproof sealing structure of a transmission shaft, which comprises an outer sleeve shell, wherein a mounting groove is formed in the center of the outer sleeve shell, a waterproof bearing is mounted in the mounting groove, an inscribed sealing assembly is arranged between the waterproof bearing and the outer sleeve shell, a transmission shaft body is sleeved at the inner end of the waterproof bearing, and a mounting assembly is arranged between the transmission shaft body and the waterproof bearing. According to the waterproof sealing structure of the transmission shaft, tightness of the joint is ensured through pressing and sealing of the upper layer, the lower layer and the middle layer, water discharge sealing is effectively carried out, water discharge efficiency is improved, installation stability of the inscribed sealing assembly is improved through extrusion, gaps at the sealing position caused by vibration are prevented from occurring, adjustment can be carried out frequently, the gaps at the joint are prevented from becoming large due to long-time abrasion, sealing effect of the inscribed sealing assembly is ensured, a transmission shaft body is installed through bolts, and after the transmission shaft body is installed, a sealing ring on the outer side wall of the transmission shaft body is pressed with the inner wall of a waterproof bearing, and sealing performance is ensured while stable installation is carried out.

Description

Waterproof sealing structure of transmission shaft

Technical Field

The utility model relates to the technical field of transmission shaft sealing, in particular to a waterproof sealing structure of a transmission shaft.

Background

The waterproof sealing structure of the transmission shaft commonly used at present is that the shaft is sleeved with a graphite and silica gel type wear-resistant material, then a spring or other types of parts are added to provide a force to compress the sealing materials such as graphite and the like on the shaft, and meanwhile, when the sealing materials are worn, the force can play a role in compensation, and the sealing materials can still be attached on the shaft.

The Chinese patent with the publication number of CN206682303U discloses a waterproof sealing structure of a transmission shaft, which comprises a shell, the transmission shaft and a bearing, wherein a bearing groove is formed in the shell, the bearing is installed in the bearing groove, the transmission shaft is installed in the bearing, the bearing is a waterproof bearing, the waterproof bearing is in sealing fit with the shell through a first sealing ring, and the transmission shaft is in sealing fit with the waterproof bearing through a second sealing ring. The space between the waterproof bearing and the shell and the space between the transmission shaft and the waterproof bearing are directly utilized, so that the space is not required to occupy additional space, and the occupied space is small; in addition, the transmission power loss is small.

The method of the above patent is insufficient in sealing effect in the actual use process, and after long-time use, the sealing gasket is worn to cause gaps to easily appear at the joint, so that the sealing effect is affected, and therefore, the existing requirements are not met.

Disclosure of Invention

The utility model aims to provide a waterproof sealing structure of a transmission shaft, which ensures the tightness of a joint through pressing and sealing of an upper layer, a lower layer and a middle layer, effectively performs water discharge sealing, improves water discharge efficiency, improves the installation stability of an inscribed sealing assembly in an extrusion mode, prevents gaps at the sealing part caused by vibration, can be adjusted frequently, prevents the gaps at the joint from being enlarged caused by long-time abrasion, ensures the sealing effect of the inscribed sealing assembly, is installed through bolts, and ensures the sealing performance while ensuring the sealing performance through pressing a sealing ring on the outer side wall of the transmission shaft with the inner wall of a waterproof bearing after the transmission shaft is installed.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a waterproof seal structure of transmission shaft, includes the overcoat shell, the mounting groove has been seted up to the center department of overcoat shell, installs waterproof bearing in the mounting groove, is provided with inscription seal assembly between waterproof bearing and the overcoat shell, and the transmission shaft body has been cup jointed to waterproof bearing's inner, is provided with installation assembly between transmission shaft body and the waterproof bearing.

Preferably, the inscription seal assembly comprises an inscription clamping groove, a sleeve ring, a seal outer ring and a pressing assembly, wherein the inscription clamping groove is formed in the inner wall of the outer sleeve shell, the sleeve ring is sleeved on the outer end face of the waterproof bearing, and the pressing assembly is arranged below the sleeve ring.

Preferably, the sealing outer ring is sleeved on the outer side wall of the sleeving ring, and the outer ring surface of the sealing outer ring is attached to the inner wall of the inscription clamping groove.

Preferably, the upper end face and the lower end face of the sleeve joint ring are respectively provided with a sealing gasket in a coating manner, the upper end face of the sleeve joint ring is pressed with the inner upper wall of the inner joint clamping groove through the sealing gaskets, and the lower end face of the sleeve joint ring is jointed with the pressing surface of the pressing assembly through the sealing gaskets.

Preferably, the press-fixing assembly comprises a press-fixing ring, an adjusting screw rod, a fixing ring, a connecting toothed ring and an adjusting rod, wherein the press-fixing ring is arranged on the inner wall of the bottom end of the mounting groove, the adjusting screw rod is arranged on the press-fixing ring through sleeving, the bottom end of the press-fixing ring is sleeved on the adjusting screw rod, the connecting toothed ring is arranged below the fixing ring through a bearing, and the adjusting rod is arranged at the side end of the connecting toothed ring.

Preferably, the bottom end of the adjusting screw rod is provided with a tooth groove, the adjusting screw rod is meshed with the tooth groove on the inner wall of the connecting toothed ring, the adjusting rod is provided with the tooth groove, and the tooth groove on the adjusting rod is meshed with the tooth groove on the outer wall of the connecting toothed ring.

Preferably, the fixing ring is provided with a clamping tooth socket, and the adjusting rod is movably inserted into the clamping tooth socket.

Preferably, the installation component includes installation ring plate, bolt and mounting hole, and the installation ring plate is fixed on waterproof bearing inner wall, has seted up the mounting hole on the outer curb plate of transmission shaft, is connected by the bolt between installation ring plate and the transmission shaft body, and the transmission shaft outer lateral wall is gone up to connect the sealing washer with waterproof bearing inner wall laminating.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the waterproof sealing structure of the transmission shaft, the upper end face and the lower end face of the sleeve joint ring are respectively provided with the sealing gaskets in a coating manner, the upper end face of the sleeve joint ring is in pressing fit with the upper wall in the internal joint clamping groove through the sealing gaskets, the lower end face of the sleeve joint ring is in lamination with the pressing fit face of the pressing assembly through the sealing gaskets, the waterproof bearing is clamped in the mounting groove, the upper end and the lower end of the sleeve joint ring are in pressing fit density through the sealing gaskets, the sealing outer ring is further sleeved in a gap between the sealing gaskets, and the sealing performance of the joint is ensured through the upper layer and the lower layer of pressing fit, the water discharging sealing is effectively carried out, and the water discharging efficiency is improved.

2. According to the waterproof sealing structure of the transmission shaft, the tooth grooves on the adjusting rod are meshed with the tooth grooves on the outer wall of the connecting toothed ring, the clamping tooth grooves are formed in the fixing ring, the adjusting rod is movably inserted into the clamping tooth grooves, the connecting toothed ring is driven to rotate by rotating the adjusting rod, so that a plurality of groups of adjusting screw rods are driven to rotate, the bottom end of the pressing ring is sleeved on the adjusting screw rod through nuts, the adjusting screw rod rotates, the pressing ring is driven to move upwards to extrude the lower portion of the sleeved ring, the internal connecting sealing assembly is firmly pressed in the mounting groove, when the adjusting rod is adjusted, the adjusting rod is inserted into the clamping tooth grooves to limit, the external tooth wall of the adjusting rod is pressed and limited with the clamping tooth grooves under the action of reverse rotation force, the mounting stability of the internal connecting sealing assembly is improved in an extrusion mode, gaps at the sealing position caused by vibration are prevented, adjustment can be performed frequently, the gaps at the connecting position are prevented from becoming large due to long-time abrasion, and the sealing effect of the internal connecting sealing assembly is ensured.

3. According to the waterproof sealing structure of the transmission shaft, the installation ring plate is fixed on the inner wall of the waterproof bearing, the installation hole is formed in the outer side plate of the transmission shaft body, the installation ring plate is connected with the transmission shaft body through the bolts, the outer side wall of the transmission shaft body is connected with the sealing ring attached to the inner wall of the waterproof bearing, the transmission shaft body is installed through the bolts, and after the installation, the sealing ring on the outer side wall of the transmission shaft body is pressed with the inner wall of the waterproof bearing, so that the waterproof sealing structure is stable to install and ensures sealing performance.

Drawings

FIG. 1 is a cross-sectional view of the overall structure of the present utility model;

FIG. 2 is a split cross-sectional view of the overall structure of the present utility model;

FIG. 3 is a cross-sectional view of a press-fit assembly according to the present utility model;

FIG. 4 is a bottom view of the press-fit assembly of the present utility model;

fig. 5 is a cross-sectional view of the mounting assembly of the present utility model.

In the figure: 1. an outer shell; 11. a mounting groove; 2. a waterproof bearing; 3. inscribing a sealing assembly; 31. a clamping groove is internally connected; 32. a sleeve joint ring; 321. a sealing gasket; 33. sealing the outer ring; 34. a press-fixing assembly; 341. pressing and fixing the ring; 342. adjusting a screw rod; 343. a fixing ring; 344. connecting a toothed ring; 345. an adjusting lever; 4. a drive shaft body; 5. a mounting assembly; 51. installing a ring plate; 52. a bolt; 53. and (5) mounting holes.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In order to solve the technical problems that the existing sealing effect is insufficient, and after long-time use, gaps are easy to appear at the joint due to abrasion of the sealing gasket, and the sealing effect is affected, referring to fig. 1-4, the following technical scheme is provided in this embodiment:

the utility model provides a waterproof seal structure of transmission shaft, includes overcoat shell 1, the center department of overcoat shell 1 has seted up mounting groove 11, installs waterproof bearing 2 in the mounting groove 11, is provided with inscription seal assembly 3 between waterproof bearing 2 and the overcoat shell 1.

The inscription seal assembly 3 includes inscription draw-in groove 31, cup joint the ring 32, seal outer lane 33 and press solid subassembly 34, inscription draw-in groove 31 is offered on the overcoat shell 1 inner wall, cup joint the ring 32 and cup joint on waterproof bearing 2 outer terminal surface, cup joint the below of ring 32 and set up press solid subassembly 34, seal outer lane 33 cover is cup joint on the ring 32 lateral wall, seal outer lane 33 outer lane face and inscription draw-in groove 31 inner wall laminating, all the cladding is provided with sealed pad 321 on cup joint ring 32 up and down terminal surface, cup joint ring 32 up end passes through sealed pad 321 and inscription draw-in groove 31 inner upper wall pressfitting, cup joint ring 32 lower terminal surface passes through sealed pad 321 and presses solid subassembly 34 pressfitting face laminating, waterproof bearing 2 card is put in mounting groove 11, cup joint ring 32 upper and lower extreme is pressed through sealed pad 321 and is pressed density, still cup joint is provided with sealed outer lane 33 in the gap between sealed, through upper and lower three-layer pressfitting seal, ensure junction leakproofness, effectively carry out the water release seal, improve the efficiency.

The pressing and fixing assembly 34 comprises a pressing and fixing ring 341, an adjusting screw 342, a fixing ring 343, a connecting toothed ring 344 and an adjusting rod 345, wherein the pressing and fixing ring 341 is arranged on the inner wall of the bottom end of the mounting groove 11, the pressing and fixing ring 341 is mounted at the bottom end of the mounting groove 11 through screws, the dismounting is convenient, the installation of the waterproof bearing 2 is also convenient, and the dismounting convenience is improved.

The adjusting screw rod 342 is arranged on the pressing ring 341 in a sleeved mode, the bottom end of the pressing ring 341 is sleeved on the adjusting screw rod 342, the connecting toothed ring 344 is installed below the fixing ring 343 through a bearing, the adjusting rod 345 is arranged at the side end of the connecting toothed ring 344, a tooth groove is formed in the bottom end of the adjusting screw rod 342, the adjusting screw rod 342 is meshed with the tooth groove on the inner wall of the connecting toothed ring 344, the tooth groove is formed in the adjusting rod 345, the tooth groove is meshed with the tooth groove on the outer wall of the connecting toothed ring 344, the clamping tooth groove is arranged on the fixing ring 343, the adjusting rod 345 is movably inserted in the clamping tooth groove, the rotating adjusting rod 345 drives the connecting toothed ring 344 to rotate, so that a plurality of groups of adjusting screw rods 342 are driven to rotate, the bottom end of the pressing ring 341 is sleeved on the adjusting screw rod 342 through a nut, the pressing ring 341 is driven to extrude the lower portion of the sleeved ring 32, the inner sealing assembly 3 is firmly pressed in the mounting groove 11, when the adjusting rod 345 is inserted into the clamping tooth groove to limit, the outer tooth wall of the adjusting rod 345 is meshed with the clamping tooth groove in a limited mode under the action of reverse rotation, the sealing assembly 3 is improved in stability through the extrusion tooth groove, the long-time sealing assembly is prevented from being caused, the sealing assembly is prevented from being worn, and a long-time sealing assembly is prevented from being sealed, and a long, a long-time sealing effect is ensured, and a long-time sealing joint can be caused, and a sealing assembly can be ensured.

Referring to fig. 5, a transmission shaft body 4 is sleeved at the inner end of the waterproof bearing 2, a mounting assembly 5 is arranged between the transmission shaft body 4 and the waterproof bearing 2, the mounting assembly 5 comprises a mounting ring plate 51, bolts 52 and mounting holes 53, the mounting ring plate 51 is fixed on the inner wall of the waterproof bearing 2, the mounting holes 53 are formed in the outer side plate of the transmission shaft body 4, the mounting ring plate 51 is connected with the transmission shaft body 4 through the bolts 52, a sealing ring attached to the inner wall of the waterproof bearing 2 is connected to the outer side wall of the transmission shaft body 4, the transmission shaft body 4 is mounted through the bolts 52, and after mounting, the sealing ring on the outer side wall of the transmission shaft body is pressed with the inner wall of the waterproof bearing 2, so that the sealing performance is ensured while stable mounting is realized.

Working principle: the pressing ring 341 is installed at the bottom end of the installation groove 11 through screws, the waterproof bearing 2 is convenient to install, the installation ring plate 51 is connected with the transmission shaft body 4 through bolts 52, the transmission shaft body 4 is installed through bolts 52, after installation, sealing rings on the outer side wall of the transmission shaft body are pressed with the inner wall of the waterproof bearing 2, the upper end and the lower end of the sleeving ring 32 are pressed through sealing gaskets 321, a sealing outer ring 33 is sleeved in a gap between the sealing gaskets 321, through upper and lower three layers of pressing sealing, the rotating adjusting rod 345 drives the connecting toothed ring 344 to rotate, so that a plurality of groups of adjusting screw rods 342 are driven to rotate, the bottom end of the pressing ring 341 is sleeved on the adjusting screw rods 342 through nuts, the adjusting screw rods 342 are driven to rotate, the pressing ring 341 is driven to move upwards to press the lower part of the sleeving ring 32, the inscription sealing assembly 3 is firmly pressed in the installation groove 11, when the adjustment rod 345 is inserted into the clamping tooth grooves to limit, and the outer tooth walls of the adjustment rod 345 and the clamping tooth grooves are pressed to limit under the action of reverse rotation force.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model 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 therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a waterproof seal structure of transmission shaft, includes overcoat shell (1), its characterized in that: the waterproof sealing device is characterized in that a mounting groove (11) is formed in the center of the outer casing (1), a waterproof bearing (2) is mounted in the mounting groove (11), an inscribed sealing component (3) is arranged between the waterproof bearing (2) and the outer casing (1), a transmission shaft body (4) is sleeved at the inner end of the waterproof bearing (2), and a mounting component (5) is arranged between the transmission shaft body (4) and the waterproof bearing (2).

2. A waterproof sealing structure for a transmission shaft according to claim 1, wherein: the inner connecting sealing assembly (3) comprises an inner connecting clamping groove (31), a sleeve connecting ring (32), a sealing outer ring (33) and a pressing and fixing assembly (34), wherein the inner connecting clamping groove (31) is formed in the inner wall of the outer sleeve shell (1), the sleeve connecting ring (32) is sleeved on the outer end face of the waterproof bearing (2), and the pressing and fixing assembly (34) is arranged below the sleeve connecting ring (32).

3. A waterproof sealing structure for a transmission shaft according to claim 2, wherein: the sealing outer ring (33) is sleeved on the outer side wall of the sleeve joint ring (32), and the outer ring surface of the sealing outer ring (33) is attached to the inner wall of the inner joint clamping groove (31).

4. A waterproof sealing structure for a transmission shaft according to claim 2, wherein: the upper end face and the lower end face of the sleeve joint ring (32) are respectively provided with a sealing gasket (321), the upper end face of the sleeve joint ring (32) is pressed with the inner upper wall of the inner joint clamping groove (31) through the sealing gaskets (321), and the lower end face of the sleeve joint ring (32) is jointed with the pressing surface of the pressing assembly (34) through the sealing gaskets (321).

5. A waterproof sealing structure for a transmission shaft according to claim 2, wherein: the pressing and fixing assembly (34) comprises a pressing and fixing ring (341), an adjusting screw rod (342), a fixing ring (343), a connecting toothed ring (344) and an adjusting rod (345), wherein the pressing and fixing ring (341) is arranged on the inner wall of the bottom end of the mounting groove (11), the adjusting screw rod (342) is arranged on the pressing and fixing ring (341) through sleeving, the bottom end of the pressing and fixing ring (341) is sleeved on the adjusting screw rod (342), the connecting toothed ring (344) is arranged below the fixing ring (343) through a bearing, and the adjusting rod (345) is arranged at the side end of the connecting toothed ring (344).

6. The waterproof sealing structure of a transmission shaft according to claim 5, wherein: the bottom end of the adjusting screw rod (342) is provided with a tooth groove, the adjusting screw rod (342) is meshed with the tooth groove on the inner wall of the connecting toothed ring (344), the adjusting rod (345) is provided with a tooth groove, and the tooth groove on the adjusting rod (345) is meshed with the tooth groove on the outer wall of the connecting toothed ring (344).

7. The waterproof sealing structure of a transmission shaft according to claim 5, wherein: the fixing ring (343) is provided with a clamping tooth socket, and the adjusting rod (345) is movably inserted into the clamping tooth socket.

8. A waterproof sealing structure for a transmission shaft according to claim 1, wherein: the installation component (5) is including installation annular plate (51), bolt (52) and mounting hole (53), and installation annular plate (51) are fixed on waterproof bearing (2) inner wall, have seted up mounting hole (53) on transmission shaft body (4) outer panel, are connected by bolt (52) between installation annular plate (51) and transmission shaft body (4), and connect the sealing washer with waterproof bearing (2) inner wall laminating on transmission shaft body (4) lateral wall.