CN219975264U - Rotating shaft fastening mechanism - Google Patents

Abstract

The utility model discloses a rotating shaft fastening mechanism, which comprises a mounting plate, wherein a first rotating shaft is mounted at the middle point of the mounting plate through a bearing, a second rotating shaft is fixed on the outer side of the first rotating shaft, a third rotating shaft is fixed on the outer side of the second rotating shaft, a turntable is sleeved on the outer side of the second rotating shaft, and arc racks are fixed at the upper end and the lower end of the side wall of the mounting plate; the both ends of mounting panel are provided with drive assembly, drive assembly is used for driving carousel and ring gear and carries out lateral movement. This pivot fastening device is provided with ring gear and actuating assembly, when needs are locked the rotation of pivot three and the rotary equipment who is connected, only need drive carousel and ring gear through actuating assembly and carry out lateral shifting to the one end that is close to the mounting panel, make ring gear and arc rack be in the meshing state, can lock carousel, pivot two, pivot one and pivot three, and then prevent that pivot one, pivot two and pivot three from taking place the autorotation when receiving the moment of torsion, improve the stability when rotary equipment stands.

Description

Rotating shaft fastening mechanism

Technical Field

The utility model relates to the technical field related to rotating shafts, in particular to a rotating shaft fastening mechanism.

Background

The rotating shaft is an indispensable important part in the rotating machinery, and is matched with the motor to drive the workpiece or the part to rotate, so that the quality of the rotating shaft directly influences the overall performance of the motor.

The Chinese patent with the publication number of CN207554640U discloses a locking mechanism of a rotating shaft, which belongs to the technical field of locking of the rotating shaft, and comprises a shaft sleeve, wherein a groove with a ring-shaped structure is formed in the circumference of the shaft sleeve, the bottom width of the groove is smaller than the width of a notch of the groove, a locking block which is in locking fit with the groove is arranged below the groove, and the whole locking block is in a cone structure; the locking block is used for being clamped into the groove, so that the shaft sleeve is locked; an adjusting power mechanism used for adjusting the locking block is arranged below the locking block. The locking mechanism of the rotating shaft has a simple structure, is convenient for locking the rotating shaft and is very convenient to maintain.

To sum up, the above-mentioned patent drives the locking piece card through the pneumatic cylinder and goes into the annular groove on the pivot axle sleeve to this realizes locking and fastening to the pivot through the mode of friction extrusion, in order to prevent that the pivot from taking place the rotation, but when the pivot receives the moment of torsion that is greater than the frictional force between locking piece and the axle sleeve, the pivot still can take place the rotation, and can produce great wearing and tearing to axle sleeve and locking piece, therefore its locking effect to the pivot of above-mentioned patent is relatively poor.

Disclosure of Invention

The utility model aims to provide a rotating shaft fastening mechanism, which solves the problem that the rotating shaft still rotates when the rotating shaft receives torque larger than the friction force between a locking block and a shaft sleeve in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a rotating shaft fastening mechanism comprises a mounting plate,

the middle point of the mounting plate is provided with a first rotating shaft through a bearing, the outer side of the first rotating shaft is fixedly provided with a second rotating shaft, the outer side of the second rotating shaft is fixedly provided with a third rotating shaft, the outer side of the second rotating shaft is sleeved with a rotary table, the outer wall of the second rotating shaft and the inner wall of the rotary table are polygonal, the side part of the rotary table is fixedly provided with a toothed ring, and the upper end and the lower end of the side wall of the mounting plate are fixedly provided with arc racks;

the both ends of mounting panel are provided with drive assembly, drive assembly is used for driving carousel and ring gear and carries out lateral movement.

Through adopting above-mentioned technical scheme, this pivot III can be connected with rotary equipment, and this drive assembly drives carousel and ring gear and carries out lateral shifting, can make between two sets of arc racks of ring gear card income mounting panel lateral wall, make ring gear and arc rack be in the meshing state, and then carry out spacing locking to ring gear and carousel to because the outer wall of pivot II is the polygon with the inner wall of carousel, consequently can lock pivot II, pivot I and pivot III simultaneously, in order to prevent that pivot I, pivot II and pivot III from taking place the autorotation when receiving the moment of torsion.

Preferably, the outer diameter of the cross section of the second rotating shaft is smaller than the inner diameter of the rotating disc.

By adopting the technical scheme, the outer wall of the second rotating shaft and the inner wall of the rotating disc are polygonal, so that the rotating disc can not only transversely move on the second rotating shaft, but also can enable torque to be transmitted between the second rotating shaft and the rotating disc.

Preferably, the driving assembly comprises a cylinder, the cylinder penetrates through the upper end and the lower end of the mounting plate, a connecting disc is arranged on the outer side of the rotary disc through a bearing sleeve, and the connecting disc is connected with the output end of the cylinder.

Through adopting above-mentioned technical scheme, when this pivot first, pivot second and pivot third are rotating, pivot second can be to carousel transmission moment of torsion to drive the carousel and rotate in the inboard of connection pad, the output shrink of this cylinder can drive the connection pad and remove to the one side that is close to the mounting panel, so that make the connection pad drive the ring gear card on the carousel go into between two sets of arc racks to carousel and pivot second lock.

Preferably, the U-shaped frame is fixed on the side part of the mounting plate through bolts, the motor is mounted on the U-shaped frame, the output end of the motor is connected with the connecting block, and the connecting block is connected with the first rotating shaft.

Through adopting above-mentioned technical scheme, this motor drives the connecting block and rotates, and this connecting block can drive pivot one and rotate, and then drives pivot two and pivot three and rotate.

Preferably, a rectangular groove is formed in the side portion of the first rotating shaft, the connecting block is rectangular, and the connecting block is located in the rectangular groove.

Through adopting above-mentioned technical scheme, removable bolt dismantles U-shaped frame and motor, later can take out the connecting block in the rectangle recess of pivot one side, can make connecting block and pivot one separate, only need with the connecting block card go into in the rectangle recess of pivot one side during the installation, can make the connecting block to the transmission moment of torsion of pivot one to drive pivot one, pivot two and pivot three and rotate, simple structure conveniently makes butt joint and demolish between motor and the pivot one.

Compared with the prior art, the utility model has the beneficial effects that: the rotating shaft fastening mechanism is provided with a rotating shaft,

(1) When the rotating shaft III and the connected rotating equipment are required to be locked, the rotating disc, the rotating shaft II, the rotating shaft I and the rotating shaft III can be locked only by driving the rotating disc and the toothed ring to transversely move towards one end close to the mounting plate through the driving assembly, so that the toothed ring and the arc-shaped rack are in a meshed state, the rotating disc, the rotating shaft II, the rotating shaft I and the rotating shaft III are prevented from rotating when the rotating shaft I, the rotating shaft II and the rotating shaft III are subjected to torque, and the stability of the rotating equipment in standing is improved;

(2) Be provided with U-shaped frame and connecting block, because connecting block and rectangle recess all are the rectangle, therefore when using, the connecting block can be to the transmission moment of torsion of pivot one, through dismantling the bolt that U-shaped frame is connected with the mounting panel, and pull out the connecting block in the rectangle recess of pivot one side, can make connecting block and pivot one separate, only need in the rectangle recess with the connecting block card income pivot one side during the installation, can make the connecting block to the transmission moment of torsion of pivot one, in order to drive pivot one, pivot two and pivot three rotate, and a structure is simple, conveniently make the butt joint between motor and the pivot one and demolish, improve the convenience of dismouting in-process.

Drawings

FIG. 1 is a schematic elevational view of the present utility model;

FIG. 2 is a schematic side view of the mounting plate of the present utility model;

fig. 3 is a schematic side view of the turntable and the connecting disk of the present utility model.

In the figure: 1. mounting panel, 2, pivot one, 3, pivot two, 4, pivot three, 5, carousel, 6, ring gear, 7, arc rack, 8, drive assembly, 801, cylinder, 802, connection pad, 9, U-shaped frame, 10, motor, 11, connecting block.

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.

Referring to fig. 1-3, the present utility model provides a technical solution: as shown in fig. 1, 2 and 3, a first rotating shaft 2 is arranged at the middle point of a mounting plate 1 through a bearing, a second rotating shaft 3 is fixed on the outer side of the first rotating shaft 2, a third rotating shaft 4 is fixed on the outer side of the second rotating shaft 3, a rotary table 5 is sleeved on the outer side of the second rotating shaft 3, the outer wall of the second rotating shaft 3 and the inner wall of the rotary table 5 are polygonal, a toothed ring 6 is fixed on the side part of the rotary table 5, and arc racks 7 are fixed at the upper end and the lower end of the side wall of the mounting plate 1;

the both ends of mounting panel 1 are provided with drive assembly 8, and drive assembly 8 is used for driving carousel 5 and ring gear 6 and carries out lateral movement.

As shown in fig. 1 and 3, the outer diameter of the cross section of the second rotating shaft 3 is smaller than the inner diameter of the turntable 5.

As shown in fig. 1 and 3, the driving assembly 8 includes a cylinder 801, the cylinder 801 is penetratingly disposed at the upper and lower ends of the mounting plate 1, a connection disc 802 is disposed at the outer side of the turntable 5 through a bearing housing, and the connection disc 802 is connected with an output end of the cylinder 801.

As shown in fig. 1, the side of the mounting plate 1 is fixed with a U-shaped frame 9 by bolts, a motor 10 is mounted on the U-shaped frame 9, the output end of the motor 10 is connected with a connecting block 11, and the connecting block 11 is connected with a rotating shaft one 2.

As shown in fig. 1, a rectangular groove is formed on the side of the first rotating shaft 2, the connecting block 11 is rectangular, and the connecting block 11 is located in the rectangular groove.

Working principle: opening motor 10 drives connecting block 11 and rotates, connecting block 11 can transmit the moment of torsion to pivot one 2 to drive pivot one 2, pivot two 3 and pivot three 4 rotate, with this equipment that drives to be connected with pivot three 4 rotates, when needs lock the rotation angle of connecting equipment, open cylinder 801 and to its pressure release, make it drive connection pad 802 to be close to the one end of mounting panel 1 and remove, connection pad 802 can drive carousel 5 and ring gear 6 to being close to the one end of mounting panel 1 and remove, make ring gear 6 card go into between two sets of arc racks 7 of mounting panel 1 lateral wall, ring gear 6 and arc rack 7 are in the meshing state this moment, can carry out spacing locking to carousel 5, and lock pivot two 3, pivot one 2 and pivot three 4 simultaneously, in order to prevent that pivot one 2, pivot two 3 and pivot three 4 from taking place the autorotation when receiving the moment of torsion.

This completes the entire operation and what is not described in detail in this specification is well known to those skilled in the art.

The terms "center," "longitudinal," "transverse," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used for descriptive simplicity and convenience only and not as an indication or implying that the apparatus or element being referred to must have a particular orientation, be constructed and operated for a particular orientation, based on the orientation or positional relationship illustrated in the drawings, and thus should not be construed as limiting the scope of the present utility model.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims (5)

1. A spindle fastening mechanism comprising a mounting plate (1), characterized in that:

the center of the mounting plate (1) is provided with a first rotating shaft (2) through a bearing, the outer side of the first rotating shaft (2) is fixedly provided with a second rotating shaft (3), the outer side of the second rotating shaft (3) is fixedly provided with a third rotating shaft (4), the outer side of the second rotating shaft (3) is sleeved with a rotary table (5), the outer wall of the second rotating shaft (3) and the inner wall of the rotary table (5) are polygonal, the side part of the rotary table (5) is fixedly provided with a toothed ring (6), and the upper end and the lower end of the side wall of the mounting plate (1) are fixedly provided with arc racks (7);

the two ends of the mounting plate (1) are provided with driving assemblies (8), and the driving assemblies (8) are used for driving the rotary table (5) and the toothed ring (6) to transversely move.

2. A spindle fastening mechanism according to claim 1, wherein: the outer diameter of the cross section of the second rotating shaft (3) is smaller than the inner diameter of the rotating disc (5).

3. A spindle fastening mechanism according to claim 1, wherein: the driving assembly (8) comprises an air cylinder (801), the air cylinder (801) is arranged at the upper end and the lower end of the mounting plate (1) in a penetrating mode, a connecting disc (802) is arranged on the outer side of the rotary disc (5) through a bearing sleeve, and the connecting disc (802) is connected with the output end of the air cylinder (801).

4. A spindle fastening mechanism according to claim 1, wherein: the lateral part of mounting panel (1) is fixed with U-shaped frame (9) through the bolt, and installs motor (10) on U-shaped frame (9), the output of motor (10) is connected with connecting block (11), and connecting block (11) are connected with pivot one (2).

5. A spindle fastening mechanism according to claim 4, wherein: a rectangular groove is formed in the side portion of the first rotating shaft (2), the connecting block (11) is rectangular, and the connecting block (11) is located in the rectangular groove.