CN219082096U - Connecting shaft sealing structure - Google Patents

Abstract

The utility model discloses a connecting shaft sealing structure which comprises a shaft seat and a connecting shaft, wherein the center of the shaft seat is provided with a shaft hole, a bearing is fixedly arranged at the center of the shaft hole, two ends of the shaft hole are respectively sleeved with a shaft sleeve, the inside of the shaft hole is sleeved with the connecting shaft, the connecting shaft is fixedly connected with an inner ring of the bearing, the connecting shaft is sleeved with the shaft sleeve and connected with the shaft sleeve, a sealing structure is arranged between the shaft sleeve and the shaft hole, two ends of the connecting shaft are respectively sleeved with a sealing ring, one side of the outer wall of the sealing ring is provided with an annular oil collecting groove, two ends of the shaft hole are respectively provided with a fixing groove, and one end of the sealing ring is connected with the annular oil collecting groove in an embedded mode. The connecting shaft and the shaft seat are matched through oil sealing and mechanical sealing, so that the tightness of the connecting position is effectively ensured, the air drying of lubricating oil in the bearing due to incomplete sealing is reduced, and the rotation of the connecting shaft is influenced.

Description

Connecting shaft sealing structure

Technical Field

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

Background

The connecting shaft is mainly used for connecting the transmission parts to play a role in rotation and is widely applied to transmission of mechanical equipment.

According to patent number "CN207278201U" discloses a sealing connection axle, including first axis body and the second axis body of setting at first axis body both ends, second axis body surface is provided with the circular cone screw thread, the large end setting of circular cone screw thread is between first axis body and second axis body, the tip of circular cone screw thread is established at the outer terminal surface of second axis body, the tooth type angle of circular cone screw thread is 60, and the pitch is 6.35mm, first axis body external surface is provided with the keyway, be provided with the chamfer between keyway and the first axis body, the both ends face of first axis body all is provided with the chamfer. The sealing connecting shaft plays a role in sealing connection during deep hole processing, and is simple in process and processing; the sealing performance of the second shaft body is ensured when the second shaft body is connected with a pipeline through the conical threads arranged on the second shaft body; long service life and low production cost.

The sealing performance of the connecting shaft is guaranteed when the connecting shaft is connected with a pipeline through the conical threads arranged on the second shaft body, but the sealing performance of the connecting shaft and the connecting position of the shaft seat cannot be guaranteed due to long-term rotation abrasion of the connecting shaft in the installation process only through the improvement of the structure, and the sealing effect is affected.

Disclosure of Invention

The utility model aims to provide a connecting shaft sealing structure, which solves the problems that the sealing performance of the connecting position of the connecting shaft and the shaft seat cannot be ensured and the sealing effect is affected due to long-term rotation abrasion of the connecting shaft in the installation process by only improving the structure of the connecting shaft in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a connecting axle seal structure, includes axle bed and connecting axle, the center department of axle bed has seted up the shaft hole, the center department fixed mounting in shaft hole has the bearing, the both ends in shaft hole are all overlapped and are established and be connected with the axle sleeve, the inside cover in shaft hole is established and is connected with the connecting axle, the inner circle fixed connection of connecting axle and bearing, the connecting axle is established with the axle sleeve cover and is connected, be provided with seal structure between axle sleeve and the shaft hole, the sealing ring has all been overlapped at the both ends of connecting axle, annular oil collecting groove has been seted up to one side of sealing ring outer wall, the fixed slot has all been seted up at the both ends in shaft hole, the one end and the annular oil collecting groove of sealing ring are inlayed and are established and are connected, the fixed solid fixed ring that is equipped with in middle part of sealing ring, threaded connection has fixing bolt between gu the axle bed, the oil storage chamber bottom the oil filler groove intercommunication has all been seted up at the both sides.

Preferably, the sealing mechanism comprises an arc sealing block, an extrusion block and a rotating rod, wherein grooves are formed in the top and the bottom of two sides of the shaft hole, the arc sealing block is embedded in the grooves, and the arc sealing block is embedded with the shaft sleeve to be connected. The purpose of setting up like this is, inlays through arc sealing block and axle sleeve and establishes, is convenient for seal the junction of axle sleeve, carries out spacingly to the axle sleeve simultaneously, has improved the stability of axle sleeve

Preferably, a rotating rod is rotatably connected to the groove wall at one side of the groove, an extrusion block is fixedly arranged at the end of the rotating rod, and the extrusion block is in contact connection with the side face of the arc-shaped sealing block. The purpose of setting like this is through the rotation of the rotation area drive extrusion piece of dwang, through the extrusion of extrusion piece to arc sealing block, makes arc sealing block stable inlay with the axle sleeve and establish.

Preferably, a sealing ring is sleeved at the joint of the sealing ring and the fixing groove. The purpose of the arrangement is to further ensure the tightness of the joint by the sleeved sealing ring

Preferably, an oil filling hole communicated with the oil storage cavity is formed in the top end of the shaft seat, and a sealing plug is embedded in the oil filling hole. The purpose of this arrangement is to facilitate the injection of sealing oil into the oil reservoir 9 by the provision of the oil filling holes

Preferably, the inner diameter of the arc-shaped sealing block is matched with the transverse dimension of the shaft sleeve. The purpose of this is to reduce the gap at the joint.

The utility model has the technical effects and advantages that: the position department that connecting axle and axle bed are connected sets up through the cooperation of oil blanket with mechanical seal, the effectual leakproofness of guaranteeing the junction has reduced the inside lubricating oil of bearing and has led to the air-drying because of sealed incompletely, influences the rotation of connecting axle.

Drawings

Fig. 1 is a schematic structural view of a sealing structure of a connecting shaft according to the present utility model.

Fig. 2 is a schematic cross-sectional view of a seal structure for a connecting shaft according to the present utility model.

Fig. 3 is an enlarged view of a portion of the connecting shaft seal structure of fig. 2 according to the present utility model.

In the figure: 1. a shaft seat; 2. a connecting shaft; 3. a seal ring; 4. a fixing ring; 5. a fixing bolt; 6. a sealing plug; 7. a seal ring; 8. an annular oil sump; 9. an oil storage chamber; 10. an oil injection groove; 11. a bearing; 12. a shaft hole; 13. a shaft sleeve; 14. a fixing groove; 15. a groove; 16. an arc-shaped sealing block; 17. a rotating lever; 18. extruding the blocks.

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.

The utility model provides a connecting shaft sealing structure as shown in figures 1-3, which comprises a shaft seat 1 and a connecting shaft 2, wherein a shaft hole 12 is formed in the center of the shaft seat 1, a bearing 11 is fixedly arranged in the center of the shaft hole 12, shaft sleeves 13 are sleeved at the two ends of the shaft hole 12, the connecting shaft 2 is sleeved inside the shaft hole 12 and fixedly connected with the inner ring of the bearing 11, the connecting shaft 2 is sleeved with the shaft sleeve 13 and connected with the shaft sleeve 13, a sealing structure is arranged between the shaft sleeve 13 and the shaft hole 12, sealing rings 3 are sleeved at the two ends of the connecting shaft 2, an annular oil collecting groove 8 is formed in one side of the outer wall of the sealing rings 3, fixing grooves 14 are formed at the two ends of the shaft hole 12, one end of each sealing ring 3 is connected with the annular oil collecting groove 8 in an embedded manner, a fixing ring 4 is fixedly arranged in the middle of the sealing rings 3, fixing bolts 5 are connected between the fixing rings 4 and the shaft seat 1 in a threaded manner, oil storage cavities 9 are formed in the top of the shaft seat 1, and oil injection grooves 10 communicated with the fixing grooves 14 are formed at the two sides of the bottom end of the oil storage cavities 9.

According to the illustration in fig. 1 and 2, the sealing mechanism comprises an arc-shaped sealing block 16, an extrusion block 18 and a rotating rod 17, wherein grooves 15 are formed in the top and the bottom of two sides of the shaft hole 12, the arc-shaped sealing block 16 is embedded in the grooves 15, the arc-shaped sealing block 16 is embedded with the shaft sleeve 13 and connected, and the rotating rod 17 drives the extrusion block 18 to rotate.

The groove wall on one side of the groove 15 is rotationally connected with a rotating rod 17, an extrusion block 18 is fixedly arranged at the end of the rotating rod 17, the extrusion block 18 is connected with the side face of the arc-shaped sealing block 16 in a contact manner, the rotation of the rotating rod 17 drives the extrusion block 18 to rotate, and the arc-shaped sealing block 16 is extruded by the extrusion block 18 to be embedded with the shaft sleeve 13.

The sealing ring 7 is sleeved at the joint of the sealing ring 3 and the fixing groove 14, and the sealing performance of the joint is guaranteed through the sleeved sealing ring 7, so that the sealing effect of the joint of the connecting shaft 2 and the shaft seat 1 is further improved.

The top of the shaft seat 1 is provided with an oil filling hole communicated with the oil storage cavity 9, a sealing plug 6 is embedded in the oil filling hole, and sealing oil is conveniently filled into the oil storage cavity 9 of the box through the oil filling hole.

The inner diameter of the arc-shaped sealing block 16 is matched with the transverse dimension of the shaft sleeve 13, so that the arc-shaped sealing block 16 is ensured to be embedded and connected with the shaft sleeve 13, the connecting part of the shaft sleeve 13 is convenient to seal, and meanwhile, the shaft sleeve 13 is limited and fixed.

The working principle of the utility model is as follows: when the connecting shaft 2 and the shaft seat 1 are required to be connected, firstly, the connecting shaft 2 sequentially passes through the shaft sleeve 13 and the inner ring of the bearing 11, then, the rotating rod 17 is rotated by people, the extrusion block 18 is driven to rotate by the rotation of the rotating rod 17, the arc-shaped sealing block 16 is extruded by the rotation of the extrusion block 18, the arc-shaped sealing block 16 is embedded with the end face of the shaft sleeve 13, the limiting and the sealing of the connecting position of the shaft sleeve 13 are facilitated, afterwards, the two sealing rings 3 are artificially sleeved at the two ends of the connecting shaft 2, one end of each sealing ring 3 is embedded into the fixing groove 14, the side face of the fixing ring 4 is contacted with the surface of the shaft seat 1, then, the fixing bolt 5 is connected with the shaft seat 1 in a threaded manner, the sealing rings 3 are fixed, and then, sealing oil is artificially injected into the annular oil collecting groove 8 through the oil injection groove 10, so that the sealing of the connecting position is ensured.

What is not described in detail in this specification is prior art known to those skilled in the art. The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims (6)

1. The utility model provides a connecting shaft seal structure, includes axle bed (1) and connecting axle (2), its characterized in that, axle bed (1) center department has seted up shaft hole (12), the center department fixed mounting of shaft hole (12) has bearing (11), axle bed (13) are all established to the both ends of shaft hole (12) cover, connecting axle (2) are established to the inside cover of shaft hole (12), connecting axle (2) and bearing (11) inner circle fixed connection, connecting axle (2) are established with axle bed (13) cover and are connected, be provided with seal structure between axle bed (13) and shaft hole (12), sealing ring (3) are all established to the both ends cover of connecting axle (2), annular oil groove (8) have been seted up to one side of sealing ring (3) outer wall, fixed slot (14) have all been seted up at the both ends of shaft hole (12), the one end and annular oil groove (8) of sealing ring (3) inlay and are established and are connected, the middle part fixed solid fixed ring (4) that is equipped with of sealing ring (3), be connected with between guy ring (4) and axle bed (12) cover, screw thread (5) are seted up at the top of oil pocket (1), both sides of the bottom end of the oil storage cavity (9) are provided with oil injection grooves (10) communicated with the fixed grooves (14).

2. The connecting shaft sealing structure according to claim 1, wherein the sealing structure comprises an arc-shaped sealing block (16), an extrusion block (18) and a rotating rod (17), grooves (15) are formed in the top and the bottom of two sides of the shaft hole (12), the arc-shaped sealing block (16) is embedded in the grooves (15), and the arc-shaped sealing block (16) is embedded and connected with the shaft sleeve (13).

3. The connecting shaft sealing structure according to claim 2, wherein a rotating rod (17) is rotatably connected to a groove wall at one side of the groove (15), an extrusion block (18) is fixedly arranged at the end of the rotating rod (17), and the extrusion block (18) is in contact connection with the side face of the arc-shaped sealing block (16).

4. The connecting shaft sealing structure according to claim 1, wherein a sealing ring (7) is sleeved at the joint of the sealing ring (3) and the fixing groove (14).

5. The connecting shaft sealing structure according to claim 1, wherein an oil filling hole communicated with the oil storage cavity (9) is formed in the top end of the shaft seat (1), and a sealing plug (6) is embedded in the oil filling hole.

6. A connecting shaft sealing arrangement according to claim 2, characterized in that the inner diameter of the arc-shaped sealing block (16) matches the transverse dimension of the shaft sleeve (13).

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