CN219472689U - Rotating shaft mounting structure suitable for environment with large axial force - Google Patents

Abstract

The utility model discloses a rotating shaft mounting structure suitable for a large axial force environment, which comprises the following components: the support component is arranged on the shell and used for restraining the axial movement of the rotating shaft; the locking component is arranged on the supporting component and is coaxially arranged with the supporting component, and is used for limiting the radial movement of the rotating shaft; the rotating shaft passes through the supporting component and the locking component and then is connected with the driving device, the mounting structure adopts the supporting component and the locking component to axially and radially restrain the rotating shaft, can bear larger axial force and smaller radial runout, does not increase rotating resistance of the rotating shaft, can replace a conventional flange plate structure and a conventional check ring structure, and can meet the use requirement of a larger axial force environment.

Description

Rotating shaft mounting structure suitable for environment with large axial force

Technical Field

The utility model relates to the technical field of rotating shaft installation, in particular to a rotating shaft installation structure suitable for a large axial force environment.

Background

The drive shafts connected to the drive units are usually constrained during installation to overcome axial forces (and in part also to constrain radial constraints), and at present, axial and radial constraints for the drive, propeller drive shafts and other shaft drive arrangements are most often achieved using bearings and retainers or flanges.

In chinese patent CN216794784U, an adapter assembly is disclosed, which uses a flange and a bearing to overcome the axial force, but it is inconvenient to use a retainer ring in environments where large axial force and radial force exist on a ship, etc., and in the flange form of the above patent, there are cases where there are too many fasteners or where the fasteners cannot be installed. Accordingly, there is a need for a propeller shaft mounting structure that can be used in environments of high axial forces.

Disclosure of Invention

In view of the above problems, the present inventors have provided a shaft mounting structure different from the conventional flange structure, which is suitable for environments where a large axial force exists, and has reliable axial and radial constraints while not increasing the rotational resistance of the shaft system.

Specifically, the utility model is realized as follows:

a spindle mounting structure adapted for use in a high axial force environment, comprising:

a housing;

the support component is arranged on the shell and used for restraining the axial movement of the rotating shaft;

the locking component is arranged on the supporting component, is coaxially arranged with the supporting component and is used for limiting the radial movement of the rotating shaft;

the rotating shaft penetrates through the supporting component and the locking component and then is connected with the driving device.

Further, the support assembly includes:

the support sleeve is arranged on the shell, at least three steel ball holes are formed in the support sleeve, and the at least three steel ball holes are uniformly distributed along the circumferential direction of the support sleeve;

steel balls corresponding to the steel ball holes in number;

the rotating shaft is provided with a steel ball embedding groove, the steel ball embedding groove and the steel ball Kong Gewei form a containing cavity for placing the steel ball, and when the steel ball is used, the steel ball is positioned in the containing cavity.

Further, the locking assembly includes:

the rotating piece is coaxially arranged with the supporting sleeve and integrally configured to rotate around the axial direction, a plurality of protruding parts and groove parts are arranged on the circumference of the inner side of the rotating piece, the protruding parts protrude towards the circle center, and the protruding parts and the groove parts are staggered; after the rotating shaft is installed, the protruding part is propped against the steel balls, and the steel balls are propped into the steel ball embedding grooves for limiting the axial and radial movement of the rotating shaft.

Further, the locking assembly further comprises:

the rotary waist groove is arranged on the rotary piece;

the fixed pin is arranged at the top of the supporting sleeve and penetrates through the rotating waist groove, and when the rotating piece rotates, the fixed pin slides in the rotating waist groove and is used for limiting the rotating angle of the rotating piece.

Further, the supporting sleeve is provided with a steel wire check ring, and the steel wire check ring is positioned above the steel ball hole and props against the rotating piece for preventing the rotating piece from axially moving.

Further, the support sleeve is provided with a restraint hole, the rotating piece is provided with a threaded hole, and the positioning screw penetrates through the threaded hole and then enters the restraint hole to be used for positioning and locking the rotating piece.

Further, the shaft is provided with a ring groove, a sealing ring is arranged in the ring groove, one side of the sealing ring is contacted with the ring groove, and the other side of the sealing ring is contacted with the shell for preventing the inside and outside of the shell from being communicated.

The working principle of the utility model is as follows:

when the steel ball bearing device is used, the steel ball (22) is positioned in a cavity formed by the steel ball hole (212) and the steel ball embedding groove (61), and the steel ball (22) is restrained axially by the cavity, so that the axial movement of the rotating shaft (6) is restrained indirectly. The locking component is propped against the steel ball (22) and is always positioned in the containing cavity, so that the radial movement of the steel ball (22) is limited, and the radial movement of the rotating shaft (6) is indirectly limited.

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

(1) The supporting component and the locking component are adopted to axially and radially constrain the rotating shaft, so that larger axial force can be borne, radial runout is small, meanwhile, the rotating resistance of the rotating shaft is not increased, and the use requirement of a larger axial force environment can be met.

(2) The mounting structure is convenient to assemble and disassemble, and the overall assembly efficiency can be effectively improved.

Drawings

FIG. 1 is a schematic structural view of a shaft mounting structure for a large axial force environment in embodiment 1;

FIG. 2 is a top view of the support sleeve of example 1;

fig. 3 is a longitudinal sectional view of the support sleeve in embodiment 1;

fig. 4 is a schematic structural diagram of the rotating shaft in embodiment 1;

fig. 5 is a top view of the rotary member in embodiment 1;

FIG. 6 is a view showing the use state of the spindle mounting structure for a large axial force environment in embodiment 1;

fig. 7 is a schematic diagram showing the assembly process of the spindle mounting structure for a large axial force environment in embodiment 1.

Reference numerals:

1-a housing; 21-a supporting sleeve; 211-restricting the hole; 212-steel ball holes; 22-steel balls; 23-a steel wire retainer ring; 31-a rotating member; 311-bosses; 312-groove portions; 313-threaded holes; 314-set screw; 41-rotating the waist groove; 42-fixing pins; 5-supporting screws; 6-rotating shaft; 61-steel ball embedding groove; 62-ring groove; 7-a sealing ring; 8-driving means.

Detailed Description

The utility model will be described in further detail below with reference to the drawings by means of specific embodiments.

Example 1

As shown in fig. 1, the present embodiment provides a shaft mounting structure suitable for a large axial force environment, including: the shell 1, the supporting component and the locking component are connected with the driving device 8 after the rotating shaft 6 passes through the supporting component and the locking component. The power of the driving device 8 is transmitted to the equipment through the rotating shaft 6. The upper part of the housing 1 is provided with a recessed area for providing mounting positions for a support assembly and a locking assembly, and the support assembly is arranged in the recessed area of the housing 1 for restraining the axial movement of the rotating shaft 6. The locking component is sleeved on the supporting component and is coaxially installed with the supporting component, and is used for limiting the radial movement of the rotating shaft 6. The structure adopts the supporting component and the locking component to axially and radially constrain the rotating shaft, can bear larger axial force and smaller radial runout, does not increase the rotating resistance of the rotating shaft, and can meet the use requirement of the environment with larger axial force.

In particular, as shown in fig. 2-3, the support assembly includes: the support sleeve 21 and the steel balls 22, the support sleeve 21 is fixed on the shell 1 through a plurality of support screws 5, at least three steel ball holes 212 are formed in the contact part of the support sleeve 21 and the rotating shaft 6, the plurality of steel ball holes 212 are uniformly distributed along the circumferential direction of the support sleeve 21, the number of the steel balls 22 corresponds to the number of the steel ball holes 212, and the steel balls 22 are located in the steel ball holes 212. As shown in fig. 4, the upper part of the rotating shaft 6 is provided with a steel ball embedding groove 61, and a steel ball hole 212 and the steel ball embedding groove 61 are surrounded to form a containing cavity for containing the steel ball 22. When in use, the steel balls 22 are positioned in the accommodating cavity, and the accommodating cavity is utilized to axially restrain the steel balls 22, so that the axial movement of the rotating shaft 6 is indirectly restrained. When in use, the locking component props against the steel balls 22 and is always positioned in the containing cavity, so that the radial movement of the steel balls 22 is limited, and the radial movement of the rotating shaft 6 is indirectly limited.

The contact part of the rotating shaft 6 and the shell 1 is provided with a plurality of ring grooves 62, and sealing rings 7 are arranged in the ring grooves 62 to prevent the inside and outside of the shell 1 from communicating and perform sealing function.

Further, the supporting sleeve 21 is provided with a steel wire check ring 23, and the steel wire check ring 23 is positioned above the steel ball hole 212 and props against the upper part of the locking assembly, so that the locking assembly is prevented from axially moving, and the stability of the installation structure is ensured.

Further, as shown in fig. 5, the locking assembly is a rotating member 31, which is coaxially installed with the supporting sleeve 21, and is symmetrically provided with two threaded holes 313, the supporting sleeve 21 is provided with corresponding restraining holes 211, and the positioning screws 314 penetrate into the restraining holes 211 after passing through the threaded holes 313, so as to position and lock the rotating member 31. The inner circumference of the rotating member 31 is provided with a plurality of protruding portions 311 and recessed portions 312, the protruding portions 311 and the recessed portions 312 are arranged in a staggered manner, and the protruding portions 31 protrude toward the center of the circle. When in use, the protruding part 311 is positioned at the outer side of the steel ball hole 212 to prop against the steel ball 22, and push the steel ball 22 into the steel ball embedded groove 61, so that the steel ball 22 is always positioned in the containing cavity formed by the steel ball hole 212 and the steel ball embedded groove 61, and the axial and radial movement of the rotating shaft 6 is ensured not to happen. In addition, the steel balls 22 are in point contact with the rotating shaft 6, the rotating piece 31 and the supporting sleeve 21, so that the contact area is small, the generated friction force is also small, and the power transmission efficiency is ensured.

In order to facilitate the disassembly and assembly of the rotating shaft 6, a rotating waist groove 41 is arranged on the rotating member 31, a fixing pin 42 is arranged at the corresponding position of the supporting sleeve 21, after the rotating member 31 and the supporting sleeve 21 are assembled, the fixing pin 42 stretches into the rotating waist groove 41, after the positioning screw 314 is loosened, the rotating member 31 is rotated, so that the position of the fixing pin 42 relative to the rotating waist groove 41 is changed, meanwhile, the state that the protruding part 311 props against the steel ball 22 is converted into the state that the groove part 312 is opposite to the steel ball hole 212, the steel ball 22 falls into the groove part 312 after being free from radial constraint, and the constraint of the rotating shaft 6 is released, so that the rotating shaft 6 can be taken out.

Specifically, the mounting structure is mounted as follows:

the steel ball 21 is first placed in the steel ball hole 212, then the rotating member 31 is sleeved, then the steel wire retainer ring 23 is installed, and then the supporting sleeve 21 is fixed on the shell 1 through the supporting screw 5. After the driving surface of the driving device 8 is aligned with the driving surface of the rotating shaft 6 and is inserted into place, the steel ball embedding groove 61 on the rotating shaft 6 is aligned with the steel ball hole 212 on the supporting sleeve 21, the rotating member 31 rotates, and the protruding part 311 on the rotating member pushes a part of the steel ball 22 into the steel ball embedding groove 61. The steel ball hole 212 and the steel ball embedding groove 61 jointly restrict the steel ball 22 axially, indirectly restrict the axial movement of the rotating shaft 6, and the protruding part on the rotating member 31 restricts the steel ball 22 radially, indirectly restrict the radial movement of the rotating shaft 6.

The rotating member 31 is reversed, the groove 312 on the rotating member is aligned with the steel balls 22, the steel balls 22 fall into the groove 312 after being free from radial constraint, the constraint of the rotating shaft 6 is released, and the rotating shaft can be taken out.

The foregoing description of the utility model has been presented for purposes of illustration and description, and is not intended to be limiting. Several simple deductions, modifications or substitutions may also be made by a person skilled in the art to which the utility model pertains, based on the idea of the utility model.

Claims (7)

1. A shaft mounting structure adapted for use in a relatively high axial force environment, comprising:

a housing (1);

the support component is arranged on the shell (1) and used for restraining the rotating shaft (6) from moving axially;

the locking component is arranged on the supporting component, is coaxially arranged with the supporting component and is used for limiting the radial movement of the rotating shaft (6);

the rotating shaft (6) passes through the supporting component and the locking component and then is connected with the driving device (8).

2. The shaft mounting structure of claim 1 adapted for use in a high axial force environment, wherein the support assembly comprises:

the support sleeve (21) is arranged on the shell (1), at least three steel ball holes (212) are formed in the support sleeve (21), and at least three steel ball holes (212) are uniformly distributed along the circumferential direction of the support sleeve (21);

steel balls (22) corresponding to the number of the steel ball holes (212);

the rotating shaft (6) is provided with a steel ball embedding groove (61), the steel ball embedding groove (61) and the steel ball hole (212) are surrounded to form a containing cavity for placing the steel ball (22), and when the steel ball type steel ball machine is used, the steel ball (22) is located in the containing cavity.

3. The shaft mounting structure for a high axial force environment of claim 2, wherein the locking assembly comprises:

the rotating piece (31) is coaxially arranged with the supporting sleeve (21) and integrally configured to rotate around the axial direction, a plurality of protruding parts (311) and groove parts (312) are arranged on the circumference of the inner side of the rotating piece, the protruding parts (311) protrude towards the circle center, and the protruding parts (311) and the groove parts (312) are arranged in a staggered mode;

after the rotating shaft (6) is installed, the protruding part (311) abuts against the steel ball (22), and the steel ball (22) is jacked into the steel ball embedded groove (61) to limit the axial and radial movement of the rotating shaft (6).

4. A spindle mounting structure for use in a high axial force environment as recited in claim 3, wherein said locking assembly further comprises:

a rotary waist groove (41) arranged on the rotary piece (31);

and the fixing pin (42) is arranged at the top of the supporting sleeve (21) and penetrates through the rotating waist groove (41), and when the rotating piece (31) rotates, the fixing pin (42) slides in the rotating waist groove (41) and is used for limiting the rotating angle of the rotating piece (31).

5. A spindle mounting structure for high axial force environments according to claim 3, wherein the supporting sleeve (21) is provided with a steel wire retainer ring (23), and the steel wire retainer ring (23) is located above the steel ball hole (212) and abuts against the rotating member (31) for preventing the rotating member (31) from axially moving.

6. A spindle mounting structure for a high axial force environment according to claim 3, wherein the support sleeve (21) is provided with a restraining hole (211), the rotary member (31) is provided with a threaded hole (313), and the positioning screw (314) passes through the threaded hole (313) and then enters the restraining hole (211) for positioning and locking the rotary member (31).

7. A spindle mounting structure for environments with large axial forces according to claim 1, characterized in that the spindle (6) is provided with a ring groove (62), a sealing ring (7) is provided in the ring groove (62), one side of the sealing ring (7) is contacted with the ring groove (62), and the other side is contacted with the housing (1) for preventing the internal and external communication of the housing (1).