CN213088667U

CN213088667U - Ball screw overload protection mechanism

Info

Publication number: CN213088667U
Application number: CN202021649824.9U
Authority: CN
Inventors: 戴汝山; 戴宏彬
Original assignee: JIANGSU DISA MACHINERY CO Ltd
Current assignee: Shanghai Deesa Electromechanical Co ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-04-30
Anticipated expiration: 2030-08-10

Abstract

The utility model discloses a ball screw overload protection mechanism, including key shaft, protection device first, dish spring protective sheath, protection device second and dish spring subassembly, the cover is established protection device first and dish spring protective sheath on the key shaft, and the cover is equipped with the big gasket of dish spring between protection device first and the dish spring protective sheath, and the one end that protection device first kept away from the big gasket of dish spring is equipped with protection device second, and the convex part on the terminal surface and the concave part phase-match meshing on the relative terminal surface of protection device second, and the cover is equipped with the dish spring subassembly on the dish spring protective sheath. The utility model discloses can effectually protect ball screw, guarantee ball screw's normal work.

Description

Ball screw overload protection mechanism

Technical Field

The utility model relates to a protection mechanism, concretely relates to ball screw overload protection mechanism.

Background

A ball screw is a mechanical device that converts a rotary motion into a linear motion or converts a linear motion into a rotary motion, and is widely used in the field of machinery.

The ball screw is easy to overload during working, the overload easily causes the damage of the ball screw, great loss is brought to a producer, and normal production and processing are influenced, so that an overload protection mechanism is needed to protect the ball screw.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model provides a ball screw overload protection mechanism can effectually protect ball screw, guarantees ball screw's normal work.

The utility model discloses a realize through following technical scheme: the utility model provides a ball screw overload protection mechanism, includes key shaft, protection device first, dish spring protective sheath, protection device second and dish spring subassembly, the epaxial cover of key is established protection device first and dish spring protective sheath, the cover is equipped with the big gasket of dish spring between protection device first and the dish spring protective sheath, protection device first keeps away from the one end of the big gasket of dish spring is equipped with protection device second, and convex part on the terminal surface with the concave part phase-match meshing on the relative terminal surface of protection device second, the cover is equipped with on the dish spring protective sheath the dish spring subassembly.

The key shaft is a spline shaft, a key groove is formed in the protection device A, and the key shaft is matched with the key groove in the protection device A.

And a switch device is arranged on one side of the disc spring assembly close to the disc spring large gasket and comprises a travel switch or a magnetic induction switch.

The protective device A is sleeved with an oil bearing.

And one end of the disc spring protective sleeve, which is far away from the disc spring large gasket, is sequentially provided with a stop piece and a positioning nut.

And a box body is sleeved outside the protection device A, the protection device B and the disc spring assembly.

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

1. the utility model adopts two control protection modes of switch electric control protection and mechanical control protection, can achieve double protection when the ball screw is overloaded, effectively avoids the damage of the ball screw caused by overload, and ensures normal production and processing;

2. when the ball screw is overloaded, the protection device A retreats under the stress to move and compress the disc spring assembly, so that the switch device on the disc spring assembly is moved to trigger the external motor switch, the motor is turned off, the ball screw stops working, the ball screw is effectively protected, and the ball screw is prevented from being damaged due to overload;

3. the utility model discloses when switching device not in operation, ball screw transships and causes protection device first continuous atress to retreat and remove compression dish spring subassembly, breaks away from with the concave part on the relative terminal surface of protection device second until convex part on the protection device first terminal surface, and then makes ball screw stop work, and the effectual ball screw that has protected avoids ball screw to transship and damage.

Drawings

Fig. 1 is an exploded view of the overload protection mechanism of the present invention;

fig. 2 is an elevation view of a protection device a in the overload protection mechanism of the present invention;

fig. 3 is another exploded view of the present invention;

fig. 4 is a first elevation view of the present invention;

fig. 5 is a second elevation view of the present invention;

fig. 6 is a third perspective view of the present invention.

In the drawings: 1. a key shaft; 2. a protection device A; 3. a disc spring protective sleeve; 4. a protection device B; 5. a disc spring assembly; 6. a disc spring large gasket; 7. a switching device; 8. a stopper; 9. positioning a nut; 10. and (4) a box body.

Detailed Description

The ball screw overload protection mechanism comprises a key shaft 1, a protection device A2, a disc spring protection sleeve 3, a protection device B4 and a disc spring assembly 5, wherein the protection device A2 and the disc spring protection sleeve 3 are sleeved on the key shaft 1, a disc spring large gasket 6 is sleeved between the protection device A2 and the disc spring protection sleeve 3, the protection device B4 is arranged at one end, far away from the disc spring large gasket 6, of the protection device A2, a convex part on the end face is in matched engagement with a concave part on the opposite end face of the protection device B4, and the disc spring assembly 5 is sleeved on the disc spring protection sleeve 3.

The key shaft 1 is a spline shaft, a key groove is formed in the protection device A2, and the key shaft 1 is matched with the key groove in the protection device A2, so that the key shaft 1 can smoothly slide in the protection device A2 when stressed.

And a switch device 7 is arranged on one side of the disc spring assembly 5 close to the disc spring large gasket 6, and the switch device 7 comprises a travel switch or a magnetic induction switch and is sensitive to induction.

The protective device A2 is sleeved with an oil-retaining bearing.

One end of the disc spring protective sleeve 3, which is far away from the disc spring large gasket 6, is sequentially provided with a stop piece 8 and a positioning nut 9, so that the disc spring protective sleeve can be stopped and positioned.

The outer sides of the protection device A2, the protection device B4 and the disc spring component 5 are sleeved with a box body 10.

Specifically, when the ball screw is overloaded, the overload force can push the protection device a 2 to move towards the disc spring assembly 5 through the protection device b 4, which causes the protection device a 2 to compress the disc spring assembly 5 on the disc spring protection sleeve 3, so that the disc spring assembly 5 contracts, and further causes the switch device 7 on one side of the disc spring assembly 5, which is close to the disc spring large gasket 6, to trigger the controller electrically connected with the external motor, so that the motor stops rotating (the triggering mode of the controller electrically connected with the external motor by the switch device 7 is common general knowledge, the specific triggering mode can be selected according to actual conditions, and is common knowledge of technicians in the field, and does not need to be described in detail), so that the ball screw stops rotating, and when the switch device 7 does not work, the overload force can push the protection device a 2 to the disc spring assembly 5 through the protection device b 4 to continuously move and compress the disc spring assembly 5, until the convex part on the end face of the protection device A2 is separated from the concave part on the opposite end face of the protection device B4, the ball screw stops working, the ball screw is effectively protected, and the ball screw is prevented from being damaged due to overload.

In summary, the present invention is only a preferred embodiment, and is not intended to limit the scope of the present invention, and all equivalent changes and modifications of the shapes, structures, features and spirit described in the claims of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a ball screw overload protection mechanism which characterized in that: the disc spring protection device comprises a key shaft (1), a protection device A (2), a disc spring protection sleeve (3), a protection device B (4) and a disc spring assembly (5), wherein the protection device A (2) and the disc spring protection sleeve (3) are sleeved on the key shaft (1), a disc spring large gasket (6) is sleeved between the protection device A (2) and the disc spring protection sleeve (3), the protection device B (4) is arranged at one end, away from the disc spring large gasket (6), of the protection device A (2), a convex portion on the end face is meshed with a concave portion on the opposite end face of the protection device B (4) in a matching mode, and the disc spring assembly (5) is sleeved on the disc spring protection sleeve (3).

2. The ball screw overload protection mechanism of claim 1, wherein: the key shaft (1) is a spline shaft, a key groove is formed in the protection device A (2), and the key shaft (1) is matched with the key groove in the protection device A (2).

3. The ball screw overload protection mechanism of claim 1, wherein: and a switch device (7) is installed on one side, close to the disc spring large gasket (6), of the disc spring assembly (5), and the switch device (7) comprises a travel switch or a magnetic induction switch.

4. The ball screw overload protection mechanism of claim 1, wherein: the protective device A (2) is sleeved with an oil-containing bearing.

5. The ball screw overload protection mechanism of claim 1, wherein: and one end of the disc spring protective sleeve (3) far away from the disc spring large gasket (6) is sequentially provided with a retainer (8) and a positioning nut (9).

6. The ball screw overload protection mechanism of claim 1, wherein: the outer sides of the protection device A (2), the protection device B (4) and the disc spring assembly (5) are sleeved with a box body (10).