Electric push rod suitable for deepwater environment

An electric push rod and environmental technology, applied in the direction of electric components, electromechanical devices, electrical components, etc., can solve the problems of push rod corrosion, thread structure loss, increase push rod force load, etc., and achieve the effect of maintaining stability

Inactive Publication Date: 2022-04-26
王丹丹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to meet the requirements of waterproof and anticorrosion, the outer tube and the inner tube need to be sealed by waterproof seals, so as to maintain the sealing of the inner cavity of the outer tube, so as to realize the tightness between the screw rod and the thread structure; but due to the underwater environment, especially It is a deep-sea environment and there is a large water pressure. Once the outer tube is sealed, a large pressure difference will be generated between the inside and outside of the push rod during the push proces

Method used

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  • Electric push rod suitable for deepwater environment
  • Electric push rod suitable for deepwater environment
  • Electric push rod suitable for deepwater environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] An electric actuator suitable for deep water environment, such as figure 1 As shown, it includes a driving device, an outer tube 2 and an inner tube 3, wherein the inner tube 3 is telescopically installed in the outer tube 2, and the end of the outer tube 2 is installed on the casing 1 of the driving device, and the screw thread is driven by the driving device The transmission structure can drive the inner tube 3 to move telescopically in the middle of the outer tube 2 .

[0034] The driving device includes a motor 24, a reducer 25 and a rotating shaft 4, one end of the rotating shaft 4 is rotatably supported by a bearing assembly 5, and the other end of the rotating shaft 4 extends into the outer tube 2; the inner tube 3 is sleeved between the outer tube 2 and the rotating shaft 4 The inner pipe 3 is provided with a balance chamber 2 10, the end of the balance chamber 10 facing outward is closed, and the end facing the driving device is sealed with the outer periphery ...

Embodiment 2

[0037] An electric push rod suitable for deep water environment, which is further optimized on the basis of the first embodiment, the push rod also includes a pressure balance device, the pressure balance device includes an elastic oil storage bag 17, and the elastic oil storage bag 17 passes through the connecting pipe 16 communicates with the balance chamber 2 10 with the annular connection structure, and fills the elastic oil storage bag 17 and the balance chamber 10 with pressure-stabilizing oil, so that the balance chamber 2 10 can always be filled with the pressure-stabilizing oil, and the oil pressure is maintained with the external water pressure. A certain balance is stable, and it can also maintain constant lubrication performance through the stabilized oil of the threaded parts.

[0038] The elastic oil storage bag 17 of the pressure balance device can replenish and temporarily store the oil in the balance chamber 10, so as to adapt to the expansion and contraction c...

Embodiment 3

[0046] An electric push rod suitable for deep water environment, further optimized on the basis of the second embodiment, the elastic oil storage bag 17 communicates with the balance chamber 10 through the connecting pipe 16, and a buffer device 23 is connected to the connecting pipe 16 , the oil pressure between the elastic oil storage bag 17 and the balance chamber 10 can be buffered by the buffer device 23, that is, the elastic oil storage bag 17 can be connected to the balance chamber only when there is a certain pressure difference between the two. Chamber two 10 is connected.

[0047] refer to Figure 4 As shown, the buffer device 23 is provided with a buffer cavity 231, the buffer cavity 231 is cylindrical in the middle, and gradually expands towards the two ends, in the shape of a bell mouth. A buffer plug 232 is connected to the middle piston of the buffer chamber 231, and the two ends of the buffer plug 232 are elastically supported by a buffer spring 234, and both ...

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PUM

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Abstract

The invention discloses an electric push rod suitable for a deepwater environment, and aims at solving the problem that an existing push rod is poor in adaptability to the underwater working environment, the electric push rod is characterized by comprising a driving device, an outer pipe and an inner pipe, the outer pipe is installed on a shell of the driving device, and the inner pipe is installed in the outer pipe in a telescopic mode; the driving device comprises a motor, a speed reducer and a rotating shaft, one end of the rotating shaft is rotationally supported through a bearing assembly, and the other end of the rotating shaft extends into the inner pipe; a second balance cavity is formed in the inner pipe, the outward end of the second balance cavity is closed, and the inward end of the second balance cavity is sealed with the periphery of the rotating shaft through a second annular sealing piece. The inner circumferential wall of the second balance cavity is provided with an internal thread and is in threaded connection with a threaded block, and the threaded block is fixedly connected with the end of the rotating shaft. The high-pressure underwater push rod can adapt to a high-pressure underwater environment, and the working stability of the push rod is kept.

Description

technical field [0001] The invention relates to the technical field of push rods, more specifically, it relates to an electric push rod suitable for deep water environment. Background technique [0002] The motor drive has small volume and weight, low power consumption, and high control precision. Through different transmission structures, it can realize the actions of various motion structures. The linear push rod drive mechanism is one of the commonly used electric drive structures. Through the adaptation of the screw and the nut, the rotation motion can be converted into an axial sliding motion, thereby realizing linear drive. [0003] In the underwater environment, the underwater push rod needs to have high pressure resistance, waterproof and anti-corrosion requirements, and the performance requirements for the push rod are relatively high. In order to meet the requirements of waterproof and anticorrosion, the outer tube and the inner tube need to be sealed by waterproo...

Claims

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Application Information

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IPC IPC(8): H02K5/132H02K5/10H02K7/06
CPCH02K5/132H02K5/10H02K7/06
Inventor 王丹丹
Owner 王丹丹
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