Electric push rod
A technology of electric push rod and screw rod, which is applied in the direction of electric components, electrical components, electromechanical devices, etc. Damaged parts, etc., to avoid topping and prevent falling off.
Pending Publication Date: 2019-01-08
HENGDIAN GRP INNUOVO ELECTRIC
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0002] The electric push rod is a commonly used linear drive mechanism. The coaxiality between the output shaft and the screw rod of the reduction mechanism in the existing electric push rod housing is relatively poor. If it is large, it will make the jacking tube swing, and the expansion and contraction of the jacking tube will be negatively affected, so that the transmission efficiency of the electric push rod is poor
[0003] When the electric push rod motor rotates to make the pipe jacking stroke reach the limit position, there is a possibility that the screw nut will contact with other parts and push to the top, which will easily cause damage to the inner screw nut and other parts of the electric push rod
[0004] Electric push rods with different strokes need to be matched with jacking pipes of different lengths. Various types of jacking pipes will cause troublesome material flow and high storage costs
Method used
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[0020] The present invention will be further described below according to the accompanying drawings and specific embodiments.
[0021] Depend on figure 1 As shown, an electric push rod of the present invention includes a housing 1, a screw mandrel 2, a screw nut 3, a jacking pipe 4 and a conduit 5, the conduit 5 is sleeved outside the screw rod 2 and fixed with the housing 1, and the wire The rod nut 3 fits on the screw rod 2, the jacking tube 4 is sleeved on the screw rod 2 and fixed with the screw nut 3, the jacking tube 4 is located between the screw rod 2 and the conduit 5, and the housing 1 is provided with a driving mechanism, The driving mechanism is composed of a driving motor 11 and a reduction mechanism 12. The output shaft 13 of the driving mechanism is linked with the screw mandrel 2 through a shaft coupling 6, and the shaft coupling 6 is fixed with the housing 1 through a bearing 7.
[0022] The shaft coupling 6 is formed with an axial hole that runs through the ...
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The invention aims to provide an electric push rod capable of eliminating the coaxiality error between the shaft and the screw rod to improve the transmission efficiency of the electric push rod, avoiding the punching of the screw rod nut, and enabling the pushing pipe of one length to be used for the electric push rod with different stroke lengths. Electric-powered push rod, include a housing, Screw, screw nut, Pipe jacking and conduit, A drive mechanism is arranged in the shell, the output shaft of the driving mechanism is linked with the screw rod through a coupling, the coupling is fixed with the shell through a bearing, the coupling is formed with an axial hole penetrating axially forward and backward, At least one section of that axial bore and two section of the axial bore constitute the axial bore, A lead screw end is fit in a section of an axial bore and a lead shaft end is fitted in a second section of that axial bore, a first stop re is arranged on the lead screw, an external thread of the coupling away from the lead screw is fitted with a finite position nut, and the bearing inn ring is restricted between the first stop ring and the limit nut.
Description
technical field [0001] The invention relates to an electric push rod. Background technique [0002] The electric push rod is a commonly used linear drive mechanism. The coaxiality between the output shaft and the screw rod of the reduction mechanism in the existing electric push rod housing is relatively poor. Large, it will make the jacking pipe swing, and the expansion and contraction of the jacking pipe will be negatively affected, so that the transmission efficiency of the electric push rod is poor. [0003] When the electric push rod motor rotates to make the pipe jacking stroke reach the limit position, there is a possibility that the screw nut will contact with other parts and push to the top, which will easily cause damage to the inner screw nut and other parts of the electric push rod. [0004] Electric push rods with different strokes need to be matched with jacking pipes of different lengths. Various types of jacking pipes will make material flow troublesome and ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H02K7/06F16H25/22
CPCH02K7/06F16H25/22
Inventor 吴凌云
Owner HENGDIAN GRP INNUOVO ELECTRIC