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CN-224204903-U - Sleeve type linear electric cylinder

CN224204903UCN 224204903 UCN224204903 UCN 224204903UCN-224204903-U

Abstract

The utility model discloses a sleeve type linear electric cylinder which comprises a base, a driving assembly and an output sleeve, wherein the driving assembly is arranged on the base and is in transmission connection with the output sleeve so as to drive the output sleeve to do telescopic motion relative to the driving assembly, and a first connecting part is arranged at one end, far away from the driving assembly, of the output sleeve, wherein when the output sleeve moves to a minimum stroke position, at least part of the driving assembly is positioned in the sleeve. The sleeve type linear electric cylinder has shorter overall length under the condition of realizing the same stroke, and greatly reduces the occupation of the linear electric cylinder in space. In addition, the cantilever effect can be effectively reduced, and the overall rigidity of the electric cylinder is improved. In addition, the output sleeve is utilized to naturally form a protective cover in the working process of the electric cylinder, the self structural characteristics of the protective cover realize the protective function, and the shell is not required to be additionally arranged, so that the cost is reduced, and the volume of the electric cylinder is reduced to a certain extent.

Inventors

  • DU WEI
  • TIAN YIFEI
  • WANG JINCHENG

Assignees

  • 万拿机器人(北京)有限公司

Dates

Publication Date
20260505
Application Date
20250528

Claims (10)

  1. 1. A telescopic linear electric cylinder, comprising: A base; The driving assembly is arranged on the base and is in transmission connection with the output sleeve, so that the output sleeve is driven to do telescopic motion relative to the driving assembly, a first connecting portion is arranged at one end, far away from the driving assembly, of the output sleeve, and at least part of the driving assembly is located in the sleeve when the output sleeve moves to the minimum stroke position.
  2. 2. The telescopic linear electric cylinder according to claim 1, comprising a first transmission member, at least part of the first transmission member being located in the output sleeve and connected to the driving assembly, so that the driving assembly drives the first transmission member to rotate, a first transmission portion being provided on an inner wall of the output sleeve, the first transmission portion being cooperatively connected to the first transmission member, so that the first transmission member drives the output sleeve to perform telescopic motion when rotating.
  3. 3. The telescopic linear electric cylinder of claim 2, wherein the first transmission member is a screw having an external thread, the inner wall of the output sleeve having an internal thread, the internal thread forming the first transmission portion, the internal thread being threadedly engaged with the external thread.
  4. 4. The telescopic linear electric cylinder of claim 2, wherein the drive assembly includes a motor, a reduction gearbox, and an encoder, the encoder being coupled to the base, the motor being coupled to the encoder, the reduction gearbox being coupled to the motor, the first transmission being coupled to an output shaft of the reduction gearbox.
  5. 5. The telescopic linear electric cylinder of claim 4, wherein one of the output sleeve and the reduction gearbox is provided with a chute, and the other of the output sleeve and the reduction gearbox is provided with a slider that slidably fits within the chute along an axial direction of the output sleeve.
  6. 6. The telescopic linear electric cylinder of claim 5, wherein the chute is provided on an inner wall of the output sleeve and the slide is provided on the reduction gearbox.
  7. 7. The telescopic linear electric cylinder of claim 4, further comprising a bellows, wherein the bellows is sleeved on the reduction gearbox, one end of the bellows is connected to a bottom end surface of the output sleeve, and the other end of the bellows is connected to the reduction gearbox.
  8. 8. The telescopic linear electric cylinder of claim 4, further comprising a sealing ring sleeved on the reduction gearbox and connected to the bottom end surface of the output sleeve, wherein the inner peripheral surface of the sealing ring is stopped against the reduction gearbox.
  9. 9. The telescopic linear electric cylinder according to claim 1, wherein the first connection portion is provided with a first connection hole, and an axis of the first connection hole is perpendicular to an axis of the output sleeve.
  10. 10. The telescopic linear electric cylinder according to claim 1, wherein the base is provided with a second connection portion, the second connection portion is provided with a second connection hole, and an axis of the second connection hole is perpendicular to an axis of the output sleeve.

Description

Sleeve type linear electric cylinder Technical Field The utility model relates to the technical field of linear electric cylinders, in particular to a sleeve type linear electric cylinder. Background With the continuous development of the automation technology, the linear electric cylinder is used as an important linear driving executing element and is widely applied to various automation devices. However, in the related art, when the output sleeve of the linear electric cylinder and the driving assembly are arranged on the same straight line, the total length of the linear electric cylinder is equal to the stroke of the linear electric cylinder plus the length of the driving assembly, so that the whole length of the linear electric cylinder is long, the problem of large occupied space exists, and the installation and the use in the environment with limited space are limited. Disclosure of utility model The present utility model aims to solve at least one of the technical problems in the related art to some extent. To this end, an embodiment of the present utility model proposes a sleeve-type linear electric cylinder. The telescopic linear electric cylinder comprises a base, a driving assembly and an output sleeve, wherein the driving assembly is arranged on the base and is in transmission connection with the output sleeve so as to drive the output sleeve to do telescopic motion relative to the driving assembly, and a first connecting part is arranged at one end, far away from the driving assembly, of the output sleeve, wherein when the output sleeve moves to a minimum stroke position, at least part of the driving assembly is positioned in the sleeve. In some embodiments, the sleeve-type linear electric cylinder of the embodiment of the utility model includes a first transmission member, at least part of the first transmission member is located in the output sleeve and connected with the driving assembly, so that the driving assembly drives the first transmission member to rotate, a first transmission portion is disposed on an inner wall of the output sleeve, and the first transmission portion is connected with the first transmission member in a matching manner, so that the first transmission member drives the output sleeve to do telescopic motion when rotating. In some embodiments, the first transmission member is a screw rod, the screw rod has an external thread, the inner wall of the output sleeve has an internal thread, the internal thread forms the first transmission portion, and the internal thread is in threaded fit with the external thread. In some embodiments, the drive assembly includes a motor, a reduction gearbox, and an encoder, the encoder is coupled to the base, the motor is coupled to the encoder, the reduction gearbox is coupled to the motor, and the first transmission is coupled to an output shaft of the reduction gearbox. In some embodiments, a sliding groove is formed in one of the output sleeve and the reduction gearbox, and a sliding block is arranged on the other of the output sleeve and the reduction gearbox, and the sliding block is slidably matched in the sliding groove along the axial direction of the output sleeve. In some embodiments, the sliding groove is arranged on the inner wall of the output sleeve, and the sliding block is arranged on the reduction gearbox. In some embodiments, the sleeve-type linear electric cylinder of the embodiment of the utility model further comprises a corrugated pipe, the corrugated pipe is sleeved on the reduction gearbox, one end of the corrugated pipe is connected with the bottom end surface of the output sleeve, and the other end of the corrugated pipe is connected with the reduction gearbox. In some embodiments, the sleeve-type linear electric cylinder of the embodiment of the utility model further comprises a sealing ring, wherein the sealing ring is sleeved on the reduction gearbox and connected with the bottom end surface of the output sleeve, and the inner circumferential surface of the sealing ring is propped against the reduction gearbox. In some embodiments, the first connecting portion is provided with a first connecting hole, and an axis of the first connecting hole is perpendicular to an axis of the output sleeve. In some embodiments, a second connecting portion is provided on the base, and a second connecting hole is provided on the second connecting portion, and an axis of the second connecting hole is perpendicular to an axis of the output sleeve. When the output sleeve moves to the minimum stroke position, at least part of the driving assembly is positioned in the sleeve, so that the output sleeve and at least part of the driving assembly are overlapped in the axial direction of the output sleeve, the overall length of the linear electric cylinder is reduced, and the linear electric cylinder can be shortened by 30% -50% compared with the traditional linear electric cylinder. That is, under the condition of realizing the same stro