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an electric push rod

An electric push rod and screw technology, which is applied in the direction of electric components, transmission devices, electromechanical devices, etc., can solve problems such as disappearance, reduced life of electric push rods, loss of lubrication and cooling effects, etc., so that it is not easy to be consumed and the service life is guaranteed. Effect

Active Publication Date: 2021-04-16
绍兴市上虞荣达实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] But this kind of lubrication method, after long-term use, the lubricating oil on the thread surface of the screw and the nut will be reduced or even disappear due to the downflow or deterioration of the lubricating oil, thus losing the lubrication and cooling effect, and reducing the life of the electric push rod

Method used

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Examples

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Embodiment Construction

[0041] An electric push rod, such as figure 1 As shown, it includes a base 6, an outer tube 1, an inner tube 2, a screw rod 3, a nut 4, a driver 5 and an end cover 11. The base 6 includes an upper cover 62, a lower cover 61, and a special-shaped tube seat 63. One end of the outer tube 1 is connected to On the special-shaped pipe seat 63, the other end is fixedly connected with the end cap 11, and the end cap 11 is provided with an end cap hole for the inner tube 2 to pass through.

[0042] The end face of the end cover 11 facing the nut 4 is provided with a guide sleeve 12, the inner wall of the guide sleeve 12 is provided with a wear-resistant sleeve 13, the wear-resistant sleeve 13 is sleeved outside the inner tube 2 and fits with the outer wall of the inner tube 2, the wear-resistant sleeve 13 The material is POM plastic.

[0043] like figure 1 and figure 2 As shown, the end face of the lower cover 61 facing away from the upper cover 62 is fixedly connected with the low...

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Abstract

The invention relates to the field of electric telescopic tools, and discloses an electric push rod, which includes an outer tube, an inner tube, a screw, a nut and a driving part. The two ends of the outer tube are respectively provided with bases and end covers, and the screw rod is arranged in the outer tube. The ends are respectively connected to the base and the nut in rotation, the inner tube is coaxial with the screw, one end of the inner tube penetrates into the outer tube from the end cover and is sleeved outside the screw, the nut is set on the inner tube, and the inner tube and the outer tube are in the direction of rotation Clamping, the driving part is used to drive the screw to rotate, the nut includes a main nut and an auxiliary nut, the auxiliary nut is provided with a socket, the end of the main nut facing the auxiliary nut is inserted into the socket, and there is a gap between the end surface and the bottom surface of the socket, An oil storage chamber is formed, and the end surface of the secondary nut facing away from the main nut is provided with a communication hole, the inner wall of the communication hole is provided with internal teeth, the screw rod is inserted into the communication hole and threaded with the main nut, and the screw rod and the internal tooth thread are connected and closely matched. The invention has the advantages of good lubricating and cooling effect and long service life.

Description

technical field [0001] The invention belongs to the field of electric telescopic tools, in particular to an electric push rod. Background technique [0002] Electric push rods, also known as push rod motors, electric cylinders and linear actuators. The electric push rod is an electric drive device that converts the rotary motion of the motor into the linear reciprocating motion of the push rod. It can be used as an execution machine in various simple or complex technological processes to realize remote control, centralized control or automatic control. [0003] The existing electric push rod includes a base, an outer tube, an inner tube, a screw, a nut and a driving part. The screw is rotatably connected to the base. The nut is set on the end of the inner tube facing the base and is threadedly connected with the screw. The inner tube and the outer tube are clamped in the direction of rotation along the axis. The driving part is set on the base and connected with the screw ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H57/04F16H25/20F16H25/24H02K7/116
CPCF16H25/20F16H25/24F16H57/0427F16H57/0497F16H2025/2062F16H2025/2081H02K7/116
Inventor 叶伟青
Owner 绍兴市上虞荣达实业有限公司
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