CN221323190U - Rotary limiting mechanism of rotating shaft - Google Patents

Abstract

The utility model discloses a rotating shaft rotating limiting mechanism, which comprises a rotating shaft assembly and a limiting assembly, wherein the limiting assembly is positioned at a radial position above one end of the rotating shaft assembly and is contacted with the rotating shaft assembly; the limiting assembly comprises a supporting seat, holding claws and a pin shaft, wherein the two holding claws are symmetrically arranged on the supporting seat in a left-right mode, and the holding claws are rotationally connected with the supporting seat through the pin shaft. According to the utility model, the rotating shaft assembly and the limiting assembly are arranged, so that the limiting assembly is positioned at the radial position above one end of the rotating shaft assembly and is contacted with the rotating shaft assembly, the rotating stability of the rotating shaft can be enhanced, the vibration and noise of equipment are reduced, the service life of the equipment is prolonged, and the rotating stability of the rotating shaft is further improved and the rotating shaft can be rapidly separated by arranging the holding claw capable of swinging and the riding wheel contacted with the holding claw.

Description

Rotary limiting mechanism of rotating shaft

Technical Field

The utility model relates to the technical field of mechanical structures, in particular to a rotating shaft rotation limiting mechanism.

Background

The mechanism in the machine is a device composed of relatively movable parts, and the relatively movable parts are matched with each other to complete various functions. The rotating shaft is a shaft which bears both bending moment and torque in the rotating operation, and is widely applied to mechanical structures. The mechanical limiting mechanism of the rotating shaft is generally composed of a limiting pin, a limiting block, a limiting disc, a band-type brake and other devices, and the limiting function can be realized through mechanical parts.

The existing rotating shaft rotates through connecting bearings, and the longer rotating shaft is usually provided with bearings at two ends of the rotating shaft. However, when the special working condition is met and the bearing cannot be mounted at one end of the rotating shaft, the bending moment born by the long rotating shaft can cause larger vibration and deformation in the motion process, larger noise is generated, and larger adverse effects are caused on the rotating stability and the service life of parts. To solve this problem, a balancing force can be provided on the proximal side of the bearing to balance the bending moment at both ends of the shaft. Therefore, it is necessary to develop a rotation limiting mechanism for the shaft to provide the balancing force and improve the rotation stability of the shaft.

Disclosure of utility model

The technical problem to be solved by the utility model is to provide a rotating shaft rotation limiting mechanism aiming at the defects in the prior art, and the rotating stability of a rotating shaft is enhanced by arranging a rotation limiting structure.

The technical scheme adopted by the utility model for achieving the purpose is as follows:

The rotating shaft rotating limiting mechanism comprises a rotating shaft assembly and a limiting assembly, wherein the limiting assembly is positioned at a radial position above one end of the rotating shaft assembly and is in contact with the rotating shaft assembly; the limiting assembly comprises a supporting seat, holding claws and a pin shaft, wherein the two holding claws are symmetrically arranged on the supporting seat in a left-right mode, and the holding claws are rotationally connected with the supporting seat through the pin shaft.

Preferably, the rotating shaft assembly comprises a rotating shaft and a riding wheel, the riding wheel is sleeved at one end of the rotating shaft, and the riding wheel is in contact with the limiting assembly.

Preferably, the rotating shaft assembly further comprises a power wheel, and the power wheel is sleeved with the rotating shaft.

Preferably, the power wheel is a belt pulley or a gear. The rotating shaft of the rotating shaft assembly can be driven to rotate through belt transmission or gear transmission.

Preferably, the riding wheel is provided with a trapezoid groove, the trapezoid groove is in contact with the supporting seat, and the rotating shaft assembly is limited in the radial direction and the axial direction. When the rotating shaft assembly moves to the limiting assembly for assembly, the inclined surface of the trapezoid groove can play a role in guiding.

Preferably, the supporting seat and the holding claws are contacted with the riding wheel, and the inner side surfaces of the opposite holding claws are contacted with the riding wheel, so that the rotating stability can be improved.

Preferably, the support seat is provided with a yielding groove, and the holding claw can rotate in the yielding groove.

Preferably, a concave arc surface is arranged on the lower bottom surface of the supporting seat, the concave arc surface is in contact with the riding wheel, and the concave arc surface is used for limiting the riding wheel in the radial direction. The concave cambered surface is in line contact with the riding wheel, so that friction resistance is reduced, and the riding wheel is centered and guided.

Preferably, when the rotating shaft assembly is assembled with the limiting assembly, the rotating shaft assembly moves relatively to the limiting assembly, and the rotating shaft assembly can firstly contact the holding claws and overcome the gravity of the holding claws to enable the holding claws to rotate until the riding wheel contacts the concave cambered surface. When the rotating shaft assembly is separated from the limiting assembly, the rotating shaft assembly can be directly separated from the limiting assembly by downward movement, and the holding claw rotates under the action of dead weight to restore to the initial position.

Preferably, a bearing is arranged at the joint of the riding wheel and the rotating shaft, so that when the rotating shaft rotates, the riding wheel does not rotate along with the rotating shaft, and friction resistance between the riding wheel and the limiting assembly is reduced.

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

According to the utility model, the rotating shaft assembly and the limiting assembly are arranged, so that the limiting assembly is positioned at the radial position above one end of the rotating shaft assembly and is contacted with the rotating shaft assembly, the rotating stability of the rotating shaft can be enhanced, the vibration and noise of equipment are reduced, the service life of the equipment is prolonged, and the rotating stability of the rotating shaft is further improved and the rotating shaft can be rapidly separated by arranging the holding claw capable of swinging and the riding wheel contacted with the holding claw.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a rotational limiting mechanism of a spindle;

FIG. 2 is a schematic structural view of a spindle assembly;

FIG. 3 is a schematic view of a spacing assembly;

FIG. 4 is a perspective cross-sectional view of the spindle rotation limiting mechanism;

FIG. 5 is a schematic view illustrating installation of a shaft rotation limiting mechanism;

FIG. 6 is a cross-sectional view at A-A in FIG. 5;

Fig. 7 is a cross-sectional view at B-B in fig. 5.

Reference numerals illustrate:

1. A spindle assembly; 101. a rotating shaft; 102. a riding wheel; 103. a power wheel;

2. A limit component; 201. a support base; 202. holding claws; 203. a pin shaft; 204. a relief groove; 205. a concave cambered surface;

3. A bearing with a seat;

4. and (5) mounting a bracket.

Detailed Description

The present utility model will be described in detail below with reference to the drawings and the specific embodiments, so that those skilled in the art can better understand the technical solutions of the present utility model.

As shown in fig. 1 and 3, a rotating shaft rotating limiting mechanism comprises a rotating shaft assembly 1 and a limiting assembly 2, wherein the limiting assembly 2 is positioned at a radial position above one end of the rotating shaft assembly 1 and is in contact with the rotating shaft assembly 1; the limiting assembly 2 comprises a supporting seat 201, holding claws 202 and a pin shaft 203, wherein the two holding claws 202 are symmetrically arranged on the supporting seat 201 in a left-right mode, and the holding claws 202 are rotationally connected with the supporting seat 201 through the pin shaft 203.

As shown in fig. 5, the rotating shaft assembly 1 is connected with a bearing 3 with a seat, and the bearing with a seat is mounted on a mounting bracket 4.

As shown in fig. 1 and 2, the rotating shaft assembly 1 includes a rotating shaft 101 and a supporting roller 102, the supporting roller 102 is sleeved at one end of the rotating shaft 101, and the supporting roller 102 contacts with the limiting assembly 2.

As shown in fig. 2, the spindle assembly 1 further includes a power wheel 103, and the power wheel 103 is sleeved on the spindle 101. The power wheel 103 is a belt pulley or a gear. The rotation shaft 101 of the rotation shaft assembly 1 may be driven to rotate by belt transmission or gear transmission.

As shown in fig. 4, the riding wheel 102 is provided with a trapezoid groove, and the trapezoid groove contacts with the supporting seat 201 to limit the rotating shaft assembly 1 in the radial direction and the axial direction. When the rotating shaft assembly 1 moves towards the limiting assembly 2 to be assembled, the inclined surface of the trapezoid groove can play a role in guiding.

As shown in fig. 6 and 7, the supporting seat 201 and the holding claws 202 are both in contact with the supporting wheel 102, and the inner side surfaces of the opposite holding claws 202 are both in contact with the supporting wheel 102, so that the stability of rotation can be improved.

As shown in fig. 3, the support base 201 is provided with a yielding groove 204, and the holding claw 202 can rotate in the yielding groove 204.

As shown in fig. 3 and fig. 4, a concave arc surface 205 is disposed on the lower bottom surface of the supporting seat 201, the concave arc surface 205 contacts with the riding wheel 102, and the concave arc surface 205 limits the riding wheel 102 in a radial direction. The concave cambered surface 205 is in line contact with the riding wheel 102, so that friction resistance is reduced, and the riding wheel 102 is centered and guided.

When the rotating shaft assembly 1 is assembled with the limiting assembly 2, the rotating shaft assembly 1 moves relatively to the limiting assembly 2, and the rotating shaft assembly 1 can firstly contact the holding claws 202 and overcome the gravity of the holding claws 202 to rotate until the riding wheel 102 contacts the concave cambered surface 205. When the rotating shaft assembly 1 is separated from the limiting assembly 2, the rotating shaft assembly 1 can be directly separated from the limiting assembly by downward movement, and the holding claw 202 rotates under the action of dead weight to restore to the initial position.

The bearing is arranged at the joint of the riding wheel 102 and the rotating shaft 101, so that when the rotating shaft 101 rotates, the riding wheel 102 does not rotate along with the rotating shaft 101, and friction resistance between the riding wheel 102 and the limiting assembly 2 is reduced.

According to the utility model, the rotating shaft assembly 1 and the limiting assembly 2 are arranged, so that the limiting assembly 2 is positioned at the radial position above one end of the rotating shaft assembly 1 and is in contact with the rotating shaft assembly 1, the rotating stability of the rotating shaft 101 can be enhanced, the vibration and noise of equipment can be reduced, the service life of the equipment can be prolonged, and the rotating stability of the rotating shaft 101 can be further improved and the rotating shaft 101 can be quickly separated by arranging the holding claw 202 capable of swinging. The rotating shaft rotation limiting mechanism provided by the utility model can be applied to other scenes in which the rotating shaft 101 needs to be limited and the rotating shaft 101 is easy to separate.

The embodiments of the present utility model have been described in detail by way of examples, but the descriptions are merely exemplary of the embodiments of the present utility model and are not to be construed as limiting the scope of the embodiments of the present utility model. The protection scope of the embodiments of the utility model is defined by the claims. In the technical scheme of the embodiment of the utility model, or under the inspired by those skilled in the art, similar technical schemes are designed within the spirit and the protection scope of the embodiment of the utility model, or equivalent changes and improvements made to the application scope are still included in the patent coverage protection scope of the embodiment of the utility model.

Claims (10)

1. The rotating shaft rotating limiting mechanism is characterized by comprising a rotating shaft assembly (1) and a limiting assembly (2), wherein the limiting assembly (2) is positioned at a radial position above one end of the rotating shaft assembly (1) and is in contact with the rotating shaft assembly (1); the limiting assembly (2) comprises a supporting seat (201), holding claws (202) and a pin shaft (203), wherein the two holding claws (202) are symmetrically arranged on the supporting seat (201) left and right, and the holding claws (202) are rotationally connected with the supporting seat (201) through the pin shaft (203).

2. The rotating shaft rotating and limiting mechanism according to claim 1, wherein the rotating shaft assembly (1) comprises a rotating shaft (101) and a riding wheel (102), the riding wheel (102) is sleeved at one end of the rotating shaft (101), and the riding wheel (102) is in contact with the limiting assembly (2).

3. The spindle rotation limiting mechanism according to claim 2, wherein the spindle assembly (1) further comprises a power wheel (103), the power wheel (103) being sleeved with the spindle (101).

4. A spindle rotation limiter in accordance with claim 3, characterized in that the power wheel (103) is a pulley or a gear.

5. The rotating limiting mechanism of claim 2, wherein the riding wheel (102) is provided with a trapezoid groove, and the trapezoid groove is in contact with the supporting seat (201) to limit the rotating shaft assembly (1) in the radial direction and the axial direction.

6. The rotating and limiting mechanism according to claim 5, wherein the supporting seat (201) and the holding claws (202) are both in contact with the supporting wheel (102), and inner side surfaces of the opposite holding claws (202) are both in contact with the supporting wheel (102).

7. The rotating limiting mechanism of claim 6, wherein the support base (201) is provided with a yielding groove (204), and the holding claw (202) can rotate in the yielding groove (204).

8. The rotating and limiting mechanism of claim 7, wherein a concave arc surface (205) is arranged on the lower bottom surface of the supporting seat (201), the concave arc surface (205) is in contact with the riding wheel (102), and the concave arc surface (205) limits the riding wheel (102) in the radial direction.

9. The rotating and limiting mechanism of claim 8, wherein when the rotating shaft assembly (1) and the limiting assembly (2) are assembled, the rotating shaft assembly (1) moves relatively to the limiting assembly (2), and the rotating shaft assembly (1) can contact the holding claw (202) first and overcome the gravity of the holding claw (202) to rotate until the riding wheel (102) contacts the concave cambered surface (205).

10. The spindle rotation limiting mechanism according to any one of claims 2-9, characterized in that a bearing is provided at the junction of the riding wheel (102) and the spindle (101).