A clamping mechanism for the spline shaft at the bottom of a rotor

Abstract

The present invention discloses a clamping mechanism for the spline shaft at the bottom of a rotor, which is characterized by including a fixed frame, a vertical driving mechanism and a clamping mechanism. The clamping mechanism includes a clamping driving ring and a clamping seat. The vertical driving mechanism and the clamping seat are respectively fixedly arranged on the fixed frame. The vertical driving mechanism drives the clamping driving ring to move up and down along the outside of the clamping seat. The first swing jaw and the second swing jaw are relatively rotatably arranged symmetrically left and right on the clamping seat. When the clamping driving ring moves upward, the clamping driving ring pushes the upper parts of the first swing jaw and the second swing jaw to rotate inward synchronously to form a clamping groove. When the clamping driving ring moves downward, the clamping driving ring pushes the lower parts of the first swing jaw and the second swing jaw to rotate inward synchronously. The advantages are that the lever principle is utilized to cleverly realize the clamping and loosening actions of the spline shaft at the bottom of the rotor, the structure is simple, the control is stable and convenient, and the cost is effectively reduced.

Description

Technical Field

[0001] The present invention relates to a clamping device, in particular to a clamping mechanism for the spline shaft at the bottom of a rotor. Background Art

[0002] When the stator and the rotor are assembled with each other, it is necessary to clamp the spline shaft at the bottom of the rotor to prevent rotation, so as to achieve the stable assembly of the stator and the rotor. The existing clamping devices generally use clamping members symmetrically arranged left and right to clamp the spline shaft. However, when the stator and the rotor are assembled with each other, the acting force is relatively large, which will generate a large outward thrust on the clamping members, resulting in a weakened clamping effect of the clamping members on the spline shaft and thus causing the spline shaft to rotate, affecting the assembly. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a clamping mechanism for the spline shaft at the bottom of a rotor with a simple structure, convenient control and good clamping effect.

[0004] The technical solution adopted by the present invention to solve the above technical problem is as follows: A clamping mechanism for the spline shaft at the bottom of a rotor, comprising a fixed frame, a vertical driving mechanism and a clamping mechanism. The clamping mechanism includes a clamping driving ring and a clamping seat. The vertical driving mechanism and the clamping seat are respectively fixedly arranged on the fixed frame. The vertical driving mechanism drives the clamping driving ring to move up and down along the outside of the clamping seat. The first swing claw and the second swing claw are relatively rotatably arranged symmetrically left and right on the clamping seat. When the clamping driving ring moves upward, the clamping driving ring pushes the upper parts of the first swing claw and the second swing claw to rotate inward synchronously and form a clamping groove. When the clamping driving ring moves downward, the clamping driving ring pushes the lower parts of the first swing claw and the second swing claw to rotate inward synchronously. At this time, the upper parts of the first swing claw and the second swing claw rotate outward synchronously.

[0005] The clamping seat described above includes a bottom plate, a first swing base and a second swing base that are symmetrically and fixedly arranged on the bottom plate. The vertical driving mechanism is fixedly connected to the bottom of the bottom plate. The middle part of the first swing jaw is pivotally connected to the first swing base. The outer side of the first swing jaw away from the clamping groove forms a first driving surface. The middle of the first driving surface is concave. The first driving surface is gradually inclined from the inside to the outside both upward and downward from the middle. The middle part of the second swing jaw is pivotally connected to the second swing base. The outer side of the second swing jaw away from the clamping groove forms a second driving surface. The middle of the second driving surface is concave. The second driving surface is gradually inclined from the inside to the outside both upward and downward from the middle. One side of the inner wall of the clamping driving ring abuts against the first driving surface and moves along it. The other side of the inner wall of the clamping driving ring abuts against the second driving surface and moves along it. When the clamping driving ring moves upward from the middle, it moves along the outer sides of the first driving surface and the second driving surface and squeezes the upper parts of the first swing jaw and the second swing jaw inward. Eventually, the first swing jaw and the second swing jaw clamp the spline shaft at the bottom of the rotor in the clamping groove, and the upper stator and the rotor start the assembly operation. When the clamping driving ring moves downward from the top, it moves along the outer sides of the first driving surface and the second driving surface and squeezes the lower parts of the first swing jaw and the second swing jaw inward. At this time, due to the lever principle, the upper parts of the first swing jaw and the second swing jaw gradually open outward when the clamping driving ring moves downward through the middle, thus loosening the spline shaft at the bottom of the rotor.

[0006] The first swing base includes two first support rods that are symmetrically and vertically fixed on the bottom plate front and back, and a first limit block fixedly connected to the bottom plate. The second swing base includes two second support rods that are symmetrically and vertically fixed on the bottom plate front and back, and a second limit block fixedly connected to the bottom plate. The middle part of the first swing jaw is pivotally connected between the two first support rods through a horizontally arranged first rotating shaft. The middle part of the second swing jaw is pivotally connected between the two second support rods through a horizontally arranged second rotating shaft. The first limit block is located at the bottom of the gap formed between the two first support rods and inside the lower part of the first swing jaw. The second limit block is located at the bottom of the gap formed between the two second support rods and inside the lower part of the second swing jaw.

[0007] The fixed frame described above includes an upper fixed plate and a lower fixed plate distributed from top to bottom. The two sides between the upper fixed plate and the lower fixed plate are fixedly connected by vertically arranged support plates. The vertical driving mechanism includes an anti-rotation cylinder, a special-shaped anti-rotation block, and a connecting plate. The anti-rotation cylinder is fixedly arranged vertically upward on the lower fixed plate. The special-shaped anti-rotation block is fixedly connected to the output shaft of the anti-rotation cylinder. The bottom plate is provided with an anti-rotation hole matching the outer shape of the special-shaped anti-rotation block. The special-shaped anti-rotation block extends into the anti-rotation hole and is fixedly connected to the bottom of the connecting plate. The connecting plate is fixedly connected to the top surface of the bottom plate and covers the anti-rotation hole. The clamping driving ring is fixedly arranged on the connecting plate. The upper fixed plate is provided with a movable limiting hole. The clamping driving ring is accommodated in the movable limiting hole and moves up and down. The upper fixed plate is used to bear the pressure of the upper stator-rotor integral structure, reducing the vertical pressure required to be borne when the first swing jaw and the second swing jaw are clamped. The movable limiting hole can play a certain limiting and protective role for the clamping driving ring during operation.

[0008] On the inner side of the upper part of the first swing jaw, two first clamping teeth are symmetrically arranged front and back. On the inner side of the upper part of the second swing jaw, two second clamping teeth are symmetrically arranged front and back. It has a good clamping effect on the spline shaft at the bottom of the rotor, effectively preventing the rotor from rotating during assembly.

[0009] On one side inside the clamping driving ring, two vertically distributed first limiting ribs are symmetrically arranged front and back and protrude inward. On the other side inside the clamping driving ring, two vertically distributed second limiting ribs are symmetrically arranged front and back and protrude inward. The first swing base is limited between the two first limiting ribs, and the second swing base is limited between the two second limiting ribs. It plays a certain limiting and protective role for the first swing base and the second swing base.

[0010] Compared with the prior art, the advantage of the present invention is that when the clamping drive ring moves upward from the middle, it squeezes the upper part of the first swing jaw and the upper part of the second swing jaw inwardly while moving, so that the first swing jaw and the second swing jaw finally clamp the spline shaft at the bottom of the rotor in the clamping groove, and the upper stator and rotor begin to assemble; when the clamping drive ring moves from top to bottom, it pushes the lower part of the first swing jaw and the lower part of the second swing jaw inwardly while moving, and at this time, the upper part of the first swing jaw and the upper part of the second swing jaw rotate outward synchronously to release the spline shaft at the bottom of the rotor, and the lever principle is used to cleverly realize the clamping and loosening action of the spline shaft at the bottom of the rotor, and the clamping drive ring limits the maximum opening angle of the first swing jaw and the second swing jaw when clamping, so that they basically will not continue to open outward when subjected to force, and the clamping effect on the spline shaft at the bottom of the rotor is strong, so that the stator and the rotor are more stable and reliable when assembled with each other, the structure is simple, the control is stable and convenient, and the cost is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a partial structural schematic diagram of the present invention;

[0012] Figure 2 It is a partial structural exploded view of the present invention;

[0013] Figure 3 The overall structural diagram of the present invention is shown in FIG. DETAILED DESCRIPTION

[0014] The present invention is further described in detail below with reference to the accompanying drawings.

[0015] Embodiment 1: A clamping mechanism for a spline shaft at the bottom of a rotor, comprising a fixed frame, a vertical driving mechanism and a clamping mechanism. The clamping mechanism includes a clamping driving ring 1 and a clamping seat. The vertical driving mechanism and the clamping seat are respectively fixedly arranged on the fixed frame. The vertical driving mechanism drives the clamping driving ring 1 to move up and down along the outside of the clamping seat. The first swing jaw 21 and the second swing jaw 31 are relatively rotatably arranged symmetrically left and right on the clamping seat. Two first clamping teeth 22 are symmetrically arranged front and back on the inner side of the upper part of the first swing jaw 21, and two second clamping teeth 32 are symmetrically arranged front and back on the inner side of the upper part of the second swing jaw 31. When the clamping driving ring 1 moves upward, the clamping driving ring 1 pushes the upper parts of the first swing jaw 21 and the second swing jaw 31 to rotate inward synchronously and form a clamping groove. When the clamping driving ring 1 moves downward, the clamping driving ring 1 pushes the lower parts of the first swing jaw 21 and the second swing jaw 31 to rotate inward synchronously. The clamping seat includes a bottom plate 41 and a first swing base and a second swing base fixedly and symmetrically arranged on the bottom plate 41. The vertical driving mechanism is fixedly connected to the bottom of the bottom plate 41. The middle part of the first swing jaw 21 is pivotally connected to the first swing base. The outer side of the first swing jaw 21 away from the clamping groove forms a first driving surface 23. The middle of the first driving surface 23 is concave. The first driving surface 23 is gradually inclined from the inside to the outside both upward and downward from the middle. The middle part of the second swing jaw 31 is pivotally connected to the second swing base. The outer side of the second swing jaw 31 away from the clamping groove forms a second driving surface 33. The middle of the second driving surface 33 is concave. The second driving surface 33 is gradually inclined from the inside to the outside both upward and downward from the middle. One side of the inner wall of the clamping driving ring 1 abuts against the first driving surface 23 and moves, and the other side of the inner wall of the clamping driving ring 1 abuts against the second driving surface 33 and moves. The first swing base includes two first support rods 42 symmetrically arranged front and back and vertically fixedly arranged on the bottom plate 41 and a first limit block 43 fixedly connected to the bottom plate 41. The second swing base includes two second support rods 44 symmetrically arranged front and back and vertically fixedly arranged on the bottom plate 41 and a second limit block 45 fixedly connected to the bottom plate 41. The middle part of the first swing jaw 21 is pivotally connected between the two first support rods 42 through a horizontally arranged first rotating shaft 24. The middle part of the second swing jaw 31 is pivotally connected between the two second support rods 44 through a horizontally arranged second rotating shaft 34. The first limit block 43 is located at the bottom of the gap formed between the two first support rods 42 and on the inner side of the lower part of the first swing jaw 21. The second limit block 45 is located at the bottom of the gap formed between the two second support rods 44 and on the inner side of the lower part of the second swing jaw 31. The fixed frame includes an upper fixed plate 51 and a lower fixed plate 52 distributed from top to bottom. The two sides of the upper fixed plate 51 and the lower fixed plate 52 are fixedly connected by vertically arranged support plates 53. The vertical driving mechanism includes an anti-rotation cylinder 61, a special-shaped anti-rotation block 62 and a connecting plate 63. The anti-rotation cylinder 61 is vertically and upwardly fixedly arranged on the lower fixed plate 52.The special-shaped anti-rotation block 62 is fixedly connected to the output shaft of the anti-rotation cylinder 61. The bottom plate 41 is provided with an anti-rotation hole 411 that matches the outer shape of the special-shaped anti-rotation block 62. The special-shaped anti-rotation block 62 extends into the anti-rotation hole 411 and is fixedly connected to the bottom of the connecting plate 63. The connecting plate 63 is fixedly connected to the top surface of the bottom plate 41 and covers the anti-rotation hole 411. The clamping drive ring 1 is fixedly arranged on the connecting plate 63. The upper fixing plate 51 is provided with a movable limiting hole 511. The clamping drive ring 1 is accommodated in the movable limiting hole 511 and moves up and down.

[0016] Embodiment 2: The rest is the same as Embodiment 1, and the difference lies in that on one side inside the clamping drive ring 1, two vertically distributed first limiting ribs 81 are symmetrically and inwardly convexly arranged in the front and back. On the other side inside the clamping drive ring 1, two vertically distributed second limiting ribs 82 are symmetrically and inwardly convexly arranged in the front and back. The first swing base is limitedly arranged between the two first limiting ribs 81, and the second swing base is limitedly arranged between the two second limiting ribs 82.

Claims

1. A clamping mechanism for a spline shaft at the bottom of a rotor, characterized in that It includes a fixing frame, a vertical driving mechanism and a clamping mechanism. The clamping mechanism includes a clamping driving ring and a clamping seat. The vertical driving mechanism and the clamping seat are respectively fixedly arranged on the fixing frame. The vertical driving mechanism drives the clamping driving ring to move up and down along the outside of the clamping seat. The first swing jaw and the second swing jaw are relatively rotatably arranged symmetrically left and right on the clamping seat. When the clamping driving ring moves upward, the clamping driving ring pushes the upper parts of the first swing jaw and the second swing jaw to rotate inward synchronously to form a clamping groove. When the clamping driving ring moves downward, the clamping driving ring pushes the lower parts of the first swing jaw and the second swing jaw to rotate inward synchronously; The clamping seat includes a bottom plate, a first swing base and a second swing base fixedly and symmetrically arranged on the bottom plate. The vertical driving mechanism is fixedly connected to the bottom of the bottom plate. The middle part of the first swing jaw is pivotally connected to the first swing base. The outer side of the first swing jaw away from the clamping groove forms a first driving surface, the middle of the first driving surface is concave, and the first driving surface is gradually inclined from the inside to the outside both upward and downward from the middle. The middle part of the second swing jaw is pivotally connected to the second swing base. The outer side of the second swing jaw away from the clamping groove forms a second driving surface, the middle of the second driving surface is concave, and the second driving surface is gradually inclined from the inside to the outside both upward and downward from the middle. One side of the inner wall of the clamping driving ring abuts against the first driving surface and moves, and the other side of the inner wall of the clamping driving ring abuts against the second driving surface and moves; The first swing base includes two first support rods symmetrically arranged front and back and vertically fixedly arranged on the bottom plate and a first limiting block fixedly connected to the bottom plate. The second swing base includes two second support rods symmetrically arranged front and back and vertically fixedly arranged on the bottom plate and a second limiting block fixedly connected to the bottom plate. The middle part of the first swing jaw is pivotally connected between the two first support rods through a horizontally arranged first rotating shaft. The middle part of the second swing jaw is pivotally connected between the two second support rods through a horizontally arranged second rotating shaft. The first limiting block is located at the bottom of the gap formed between the two first support rods and inside the lower part of the first swing jaw. The second limiting block is located at the bottom of the gap formed between the two second support rods and inside the lower part of the second swing jaw; The fixed frame includes an upper fixed plate and a lower fixed plate which are distributed from top to bottom. The two sides between the upper fixed plate and the lower fixed plate are fixedly connected by vertically arranged support plates. The vertical driving mechanism includes an anti-rotation cylinder, a special-shaped anti-rotation block and a connecting plate. The anti-rotation cylinder is fixedly arranged vertically upward on the lower fixed plate. The special-shaped anti-rotation block is fixedly connected to the output shaft of the anti-rotation cylinder. The bottom plate is provided with an anti-rotation hole matching the outer shape of the special-shaped anti-rotation block. The special-shaped anti-rotation block extends into the anti-rotation hole and is fixedly connected to the bottom of the connecting plate. The connecting plate is fixedly connected to the top surface of the bottom plate and covers the anti-rotation hole. The clamping driving ring is fixedly arranged on the connecting plate. The upper fixed plate is provided with a movable limiting hole. The clamping driving ring is accommodated in the movable limiting hole and moves up and down.

2. The clamping mechanism for the spline shaft at the bottom of the rotor according to claim 1, characterized in that Two first clamping teeth are symmetrically arranged front and back on the inner side of the upper part of the first swing jaw. Two second clamping teeth are symmetrically arranged front and back on the inner side of the upper part of the second swing jaw.

3. The clamping mechanism of a spline shaft at the bottom of a rotor according to claim 1, characterized in that On one side of the inside of the clamping driving ring, two vertically distributed first limiting ribs are symmetrically arranged front and back and protrude inward. On the other side of the inside of the clamping driving ring, two vertically distributed second limiting ribs are symmetrically arranged front and back and protrude inward. The first swing base is limited between the two first limiting ribs. The second swing base is limited between the two second limiting ribs.

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