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

A shaft installation structure suitable for large axial force environment

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 relatively large axial force environment.

Background technique

The transmission shaft connected to the driving device usually needs to be constrained during installation to overcome the axial force (some also need to constrain the radial constraint). At present, for the transmission, propulsion transmission shaft and other shaft transmission structure shaft To and radial constraints, mostly using bearings and retaining rings or flanges to achieve.

In the Chinese patent CN216794784U, a kind of adapter assembly is disclosed, which adopts the form of flange + bearing to overcome the axial force, but it is not convenient to use the retaining ring in the environment where there is a large axial force and radial force on the ship, etc. However, when using the flange form in the above-mentioned patent, there are too many fasteners or the situation that fasteners cannot be installed. Therefore, there is a need for a transmission shaft installation structure that can be used in a relatively large axial force environment.

Utility model content

In view of the above problems, the inventor provides a shaft installation structure different from the traditional flange structure, which is suitable for the environment with large axial force, and has reliable axial and radial to constraints.

Specifically, the utility model is achieved in this way:

A rotating shaft installation structure suitable for a large axial force environment, including:

case;

a support assembly, arranged on the housing, for constraining the axial movement of the rotating shaft;

A locking component is arranged on the support component and installed coaxially with the support component, and is used to limit the radial movement of the rotating shaft;

The rotating shaft is connected with the driving device after passing through the supporting assembly and the locking assembly.

Further, the support assembly includes:

A support sleeve is provided on the housing, and the support sleeve is provided with at least three steel ball holes, and at least three of the steel ball holes are evenly distributed along the circumference of the support sleeve;

Steel balls, corresponding to the number of steel ball holes;

The rotating shaft is provided with a steel ball embedding groove, and the steel ball embedding groove and the steel ball hole are surrounded to form a cavity for placing the steel ball. When in use, the steel ball is located in the cavity.

Further, the locking assembly includes:

The rotating part is installed coaxially with the supporting sleeve, and is configured to rotate around the axial direction as a whole. There are several protrusions and grooves on its inner circumference, the protrusions protrude toward the center of the circle, and the protrusions Arranged alternately with the groove parts; after the shaft is installed, the protrusions will bear against the steel balls and push the steel balls into the steel ball embedding grooves to limit the axial and radial movement of the shaft.

Further, the locking assembly also includes:

The rotating waist groove is arranged on the rotating member;

The fixed pin is arranged on the top of the support sleeve and passes through the rotating waist groove. When the rotating member rotates, the fixing pin slides in the rotating waist groove to limit the rotation angle of the rotating member.

Further, a steel wire retaining ring is provided on the support sleeve, and the steel wire retaining ring is located above the steel ball hole, and is against the rotating member to prevent the rotating member from moving axially.

Further, the support sleeve is provided with a constraining hole, and the rotating member is provided with a threaded hole, and the positioning screw enters the constraining hole after passing through the threaded hole, and is used for positioning and locking the rotating member.

Further, an annular groove is provided on the shaft, and a sealing ring is arranged in the annular groove. One side of the sealing ring is in contact with the annular groove, and the other side is in contact with the housing, so as to prevent communication between the inside and outside of the housing.

Working principle of the utility model:

When in use, the steel ball (22) is located inside the cavity formed by the steel ball hole (212) and the steel ball embedding groove (61), and the steel ball (22) is axially constrained by the cavity, thereby indirectly constraining the rotation of the rotating shaft (6). axial movement. The locking component resists the steel ball (22) so that it is always in the cavity, so as to limit the radial movement of the steel ball (22), and indirectly limit the radial movement of the rotating shaft (6).

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

(1) The supporting assembly + locking assembly is used to constrain the shaft axially and radially, which can withstand large axial force and small radial runout without increasing the rotational resistance of the shaft, and can meet the requirements of large axial force. The use requirements of the power environment.

(2) The mounting structure is easy to assemble and disassemble, which can effectively improve the overall assembly efficiency.

Description of drawings

Fig. 1 is a structural schematic diagram of a rotating shaft installation structure used in a relatively large axial force environment in embodiment 1;

Fig. 2 is the top view of the support sleeve in embodiment 1;

Fig. 3 is a longitudinal sectional view of the support sleeve in Embodiment 1;

Fig. 4 is the structural representation of the rotating shaft in embodiment 1;

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

Fig. 6 is a diagram of the use state of the rotating shaft installation structure used in the larger axial force environment in embodiment 1;

FIG. 7 is a schematic diagram of the assembly process of the rotating shaft installation structure used in the environment of relatively large axial force in Embodiment 1. FIG.

Reference signs:

1-shell; 21-support sleeve; 211-constraint hole; 212-steel ball hole; 22-steel ball; Hole; 314-locating screw; 41-rotating waist groove; 42-fixing pin; 5-supporting screw; 6-rotating shaft; 61-steel ball embedded groove; 62-ring groove;

Detailed ways

The utility model will be described in further detail below through specific embodiments in conjunction with the accompanying drawings.

Example 1

As shown in Figure 1, this embodiment provides a shaft installation structure suitable for environments with relatively large axial forces, including: a housing 1, a support assembly and a locking assembly, after the shaft 6 passes through the support assembly and the locking assembly Connected to the drive unit 8. 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, which is used to provide installation positions for the support assembly and the locking assembly. The support assembly is provided in the recessed area of the housing 1 to constrain the axial movement of the rotating shaft 6 . The locking component is sleeved on the supporting component and installed coaxially with the supporting component, and is used to limit the radial movement of the rotating shaft 6 . The structure adopts supporting components + locking components to constrain the rotating shaft axially and radially, which can withstand large axial force and small radial runout without increasing the rotational resistance of the rotating shaft, and can meet large axial force environment requirements.

Specifically, as shown in Figures 2-3, the support assembly includes: a support sleeve 21 and steel balls 22, the support sleeve 21 is fixed on the housing 1 through a number of support screws 5, and at least three steel ball holes are provided on the contact part with the rotating shaft 6 212 , several steel ball holes 212 are evenly distributed along the circumference of the support sleeve 21 , the number of steel balls 22 corresponds to the number of 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 the steel ball hole 212 is surrounded by the steel ball embedding groove 61 to form a cavity for accommodating the steel ball 22 . When in use, the steel ball 22 is located inside the cavity, and the cavity is used to constrain the steel ball 22 axially, thereby indirectly constraining the axial movement of the rotating shaft 6 . When in use, the locking component is against the steel ball 22 and always stays in the cavity, so as to limit the radial movement of the steel ball 22 and indirectly limit the radial movement of the rotating shaft 6 .

A plurality of annular grooves 62 are provided at the contact portion between the rotating shaft 6 and the housing 1 , and the sealing rings 7 are arranged in the annular grooves 62 to prevent communication between the inside and outside of the housing 1 and perform a sealing function.

Further, the support sleeve 21 is provided with a steel wire retaining ring 23, the steel wire retaining ring 23 is located above the steel ball hole 212, and resists the upper part of the locking assembly, so as to prevent the axial movement of the locking assembly and ensure the stability of the installation structure sex.

Further, as shown in FIG. 5, the locking assembly is a rotating member 31, which is installed coaxially with the support sleeve 21, and two threaded holes 313 are symmetrically provided on it, and the support sleeve 21 is provided with corresponding constraint holes 211 for positioning. The screw 314 passes through the threaded hole 313 and penetrates into the constraining hole 211 , so as to position and lock the rotating member 31 . A plurality of protrusions 311 and grooves 312 are arranged on the inner circumference of the rotating member 31 , the protrusions 311 and the grooves 312 are alternately arranged, and the protrusions 31 protrude toward the center of the circle. When in use, the protrusion 311 is located outside the steel ball hole 212 to resist the steel ball 22, and the steel ball 22 is pushed into the steel ball insertion groove 61, so that the steel ball 22 is always located in the space formed by the steel ball hole 212 and the steel ball insertion groove 61. In the cavity, ensure that the shaft 6 does not move axially and radially. Moreover, the steel ball 22 is in point contact with the rotating shaft 6, the rotating member 31, and the support sleeve 21, the contact area is very small, and the friction force generated is also very small, which ensures the power transmission efficiency.

In order to facilitate the disassembly and assembly of the rotating shaft 6, a rotating waist groove 41 is provided on the rotating member 31, and a fixing pin 42 is provided at a corresponding position of the supporting sleeve 21. After the rotating member 31 and the supporting sleeve 21 are assembled, the fixing pin 42 extends into the Into the rotating waist groove 41, after loosening the positioning screw 314, turn the rotating member 31, so that the position of the fixed pin 42 relative to the rotating waist groove 41 changes, and at the same time, the state of the raised part 311 resisting the steel ball 22 is converted into a groove When the part 312 is facing the steel ball hole 212, the steel ball 22 falls into the groove part 312 without radial constraint, and the constraint of the rotating shaft 6 is released, so that the rotating shaft 6 can be taken out.

Specifically, the installation process of the installation structure is as follows:

First put the steel ball 21 into the steel ball hole 212 , then put the rotating member 31 on, then install the steel wire retaining ring 23 , and then fix the support sleeve 21 on the housing 1 through the support screw 5 . After the driving surface of the rotating shaft 6 is aligned with the driving surface of the driving device 8 and inserted in place, the steel ball insertion groove 61 on the rotating shaft 6 is aligned with the steel ball hole 212 on the support sleeve 21, and the rotating member 31 rotates, and the raised portion 311 on it holds the steel ball 22 A part of it pushes into the steel ball embedding groove 61. The steel ball hole 212 and the steel ball embedded groove 61 jointly constrain the steel ball 22 in the axial direction, indirectly restraining the axial movement of the rotating shaft 6 , and the protrusions on the rotating member 31 constrain the steel ball 22 in the radial direction, indirectly constraining the rotating shaft 6 radial movement.

Rotating member 31 is reversed, the groove portion 312 on it is aligned with steel ball 22, and steel ball 22 falls into groove portion 312 without radial constraints, and the constraint of rotating shaft 6 is released, and the rotating shaft can be taken out.

The above uses specific examples to illustrate the utility model, which is only used to help understand the utility model, and is not intended to limit the utility model. For those skilled in the technical field to which the utility model belongs, some simple deduction, deformation or replacement can also be made according to the idea of the utility model.

Claims (7)

1. A shaft installation structure suitable for larger axial force environments, characterized in that it includes: shell (1); a support assembly, arranged on the housing (1), for constraining the axial movement of the rotating shaft (6); A locking component is arranged on the support component and installed coaxially with the support component, and is used to limit the radial movement of the rotating shaft (6); The rotating shaft (6) is connected with the driving device (8) after passing through the supporting assembly and the locking assembly. 2. The rotating shaft installation structure applicable to a relatively large axial force environment according to claim 1, wherein the support assembly comprises: The support sleeve (21) is arranged on the housing (1), the support sleeve (21) is provided with at least three steel ball holes (212), and at least three of the steel ball holes (212) are arranged along the support The sleeve (21) is uniformly distributed in the circumferential direction; Steel balls (22), corresponding to the number of steel ball holes (212); The rotating shaft (6) is provided with a steel ball embedding groove (61), and the steel ball embedding groove (61) and the steel ball hole (212) are surrounded to form a cavity for placing the steel ball (22). When in use, the steel ball (22) is located in the inside the cavity. 3. The rotating shaft installation structure used in a relatively large axial force environment according to claim 2, wherein the locking assembly comprises: The rotating part (31) is installed coaxially with the support sleeve (21), and is configured to rotate around the axial direction as a whole. Several protrusions (311) and grooves (312) are arranged on its inner circumference. The raised part (311) protrudes toward the center of the circle, and the raised part (311) and the groove part (312) are alternately arranged; After the rotating shaft (6) is installed, the protrusion (311) is against the steel ball (22), and pushes the steel ball (22) into the steel ball embedding groove (61), so as to limit the axial direction and the direction of the rotating shaft (6). radial movement. 4. The rotating shaft installation structure used in a relatively large axial force environment according to claim 3, wherein the locking assembly further comprises: Rotate the waist groove (41), set on the rotating member (31); The fixed pin (42) is arranged on the top of the support sleeve (21) and passes through the rotating waist groove (41). ) to slide in, for limiting the angle of rotation of the rotating member (31). 5. The rotating shaft installation structure for a relatively large axial force environment according to claim 3, characterized in that, the support sleeve (21) is provided with a steel wire retaining ring (23), and the steel wire retaining ring (23) is located at Above the steel ball hole (212), and against the rotating part (31), it is used to prevent the rotating part (31) from moving axially. 6. The rotating shaft installation structure used in a relatively large axial force environment according to claim 3, characterized in that, the support sleeve (21) is provided with a constraining hole (211), and the rotating member (31) is A threaded hole (313) is provided, and the positioning screw (314) enters the constraint hole (211) after passing through the threaded hole (313), and is used for positioning and locking the rotating member (31). 7. The rotating shaft installation structure used in a relatively large axial force environment according to claim 1, characterized in that an annular groove (62) is provided on the rotating shaft (6), and a seal is arranged in the annular groove (62). A ring (7), one side of the sealing ring (7) is in contact with the ring groove (62), and the other side is in contact with the housing (1), which is used to prevent the internal and external communication of the housing (1).