Spring-assisted vertical servo electric push cylinder
By introducing a power assist spring into the upright servo electric push cylinder, the static load of the actuator is offset, and the power peak problem caused by the overlap between the dynamic load and the static load is solved, achieving the effect of reducing power consumption and extending service life.
Patent Information
- Application Number
- CN202420832724.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2024-12-13
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When the actuator moves at an upward acceleration, the dynamic load and the static load direction overlap, resulting in a large peak of the motor power, causing waste of success rate and shortened service life.
A spring-assisted servo push cylinder including electric cylinder cylinder, servo motor, folding gear box, electric cylinder push rod, power spring, trunnion, hinge seat and spring plate is designed to assist the spring nesting On the outside of the cylinder cylinder and push rod, it is always compressed, providing thrust to offset static loads and reducing the output torque and power consumption of the servo motor.
Provide thrust through the compressed state of the power spring, reduce the output torque and power consumption of the servo motor, improve thrust and thrust speed, extend service life, and replace the traditional upright servo thrust cylinder under heavy lifting conditions, improving safety and convenience sex.
Smart Images
Figure CN222169523U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of vertical lift drive mechanisms and relates to a spring-assisted vertical servo electric push cylinder. Background Art
[0002] The vertical servo electric cylinder is a driving component used in common engineering structures such as lifting platforms, lifting booms, and telescopic masts. It has the advantages of high precision, fast response, and good stability. However, for most vertical servo electric cylinders, in addition to overcoming the motion load caused by the actuator's action, they also have to overcome the static load caused by the actuator's own weight when working.
[0003] Especially for heavy-load mechanisms, when the actuator moves with an upward acceleration, the directions of the dynamic load and the static load will overlap, resulting in a large power peak for the electric push cylinder. As a result, a larger rated power is required when selecting the electric push cylinder motor, resulting in serious waste. At the same time, excessive peak load will also shorten the service life of the electric push cylinder and reduce its safety. Utility Model Content
[0004] In view of the above problems existing in the prior art, the present application provides a spring-assisted upright servo electric cylinder.
[0005] The technical solution of the utility model is as follows:
[0006] A spring-assisted upright servo electric push cylinder comprises an electric cylinder barrel, a servo motor, a reciprocating transmission gear box, an electric cylinder push rod, an assist spring, a left ear shaft, a right ear shaft, a rod end hinge seat, a cylinder end retaining spring plate, a rod end retaining spring plate and an electrical connection box. The housing of the servo motor is fixed to the reciprocating transmission gear box by bolts. The electric cylinder barrel drives the electric cylinder push rod to reciprocate through an internal transmission gear and a lead screw. The left ear shaft and the right ear shaft are hinged to an external fixed end and are respectively installed on the left and right sides of the reciprocating transmission gear box. The rod end hinge seat is fixedly installed on the top end of the electric cylinder push rod and is hinged to an external actuator.
[0007] As a preferred embodiment of the utility model: the cylinder end retaining spring plate is installed in the middle position of the outer side of the electric cylinder barrel, the rod end retaining spring plate is installed on the upper end of the electric cylinder push rod, the bottom end of the booster spring is fixedly installed on the cylinder end retaining spring plate, the top end of the booster spring is fixedly installed on the rod end retaining spring plate, and the booster spring is nested in the upper end of the electric cylinder barrel and the outer side of the lower end of the electric cylinder push rod.
[0008] As a preferred implementation mode of the utility model: when the electric cylinder push rod is extended, the booster spring is extended upward along with the rod end retaining spring plate; when the electric cylinder push rod is retracted, the booster spring is shortened downward along with the rod end retaining spring plate.
[0009] As a preferred implementation mode of the utility model: when the electric cylinder push rod is pushed to the uppermost end, the booster spring is in the longest working state, and at this time the length of the booster spring is less than or equal to its initial length when it is not compressed.
[0010] As a preferred implementation mode of the utility model: when the electric cylinder push rod is retracted to the bottom, the booster spring is in the shortest working state, and at this time, the thrust of the booster spring is less than or equal to the static load pressure of the actuator.
[0011] As a preferred embodiment of the utility model: the power connection box is externally connected to a power line and an encoder line to supply power to the servo motor and send control instructions to drive the electric cylinder push rod to extend and retract to a specified position. When the spring-assisted upright servo electric push cylinder drives the actuator to rise and fall, the assist spring is always in a compressed state and provides thrust to offset part of the static load caused by the actuator's own weight, thereby reducing the output torque and power consumption of the servo motor.
[0012] The beneficial effects of the utility model are:
[0013] The utility model discloses a spring-assisted upright servo electric push cylinder, in which the assisting spring is always in a compressed state and provides thrust to offset part of the static load caused by the actuator's own weight, so that the output torque of the servo motor can be reduced accordingly, thereby reducing the static load of the servo electric cylinder, improving the thrust and pushing speed of the servo electric cylinder, and reducing the power consumption of the cylinder. When performing load lifting operations, it can replace the traditional upright servo electric push cylinder, thereby extending the service life of the electric push cylinder and being safe and convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a three-dimensional structural diagram of the utility model in the extended state;
[0015] Figure 2 It is a three-dimensional structural diagram of the utility model in the retracted state;
[0016] Figure 3 It is a schematic diagram of the structure of the utility model;
[0017] Figure 4 This is a force balance principle diagram of the utility model;
[0018] Figure 5 This is the force balance diagram of a traditional electric cylinder.
[0019] In the figure: 1-electric cylinder barrel; 2-servo motor; 3-return transmission gear box; 4-electric cylinder push rod; 5-boost spring; 6-left ear shaft; 7-right ear shaft; 8-rod end hinge seat; 9-cylinder end retaining spring plate; 10-rod end retaining spring plate; 11-electrical connection box. DETAILED DESCRIPTION
[0020] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0021] like Figure 1-5 As shown, a spring-assisted upright servo electric push cylinder includes an electric cylinder barrel 1, a servo motor 2, a reciprocating transmission gear box 3, an electric cylinder push rod 4, an assisting spring 5, a left ear shaft 6, a right ear shaft 7, a rod end hinge seat 8, a cylinder end retaining spring plate 9, a rod end retaining spring plate 10 and an electrical connection box 11. The housing of the servo motor 2 is fixed to the reciprocating transmission gear box 3 by bolts. The electric cylinder barrel 1 drives the electric cylinder push rod 4 to reciprocate through the internal transmission gear and lead screw. The left ear shaft 6 and the right ear shaft 7 are hinged to the external fixed end and are respectively installed on the left and right sides of the reciprocating transmission gear box 3. The rod end hinge seat 8 is fixedly installed on the top of the electric cylinder push rod 4 and is hinged to the external actuator.
[0022] The cylinder end retaining spring plate 9 is installed in the middle position of the outer side of the electric cylinder barrel 1, the rod end retaining spring plate 10 is installed at the upper end of the electric cylinder push rod 4, the bottom end of the booster spring 5 is fixedly installed on the cylinder end retaining spring plate 9, the top end of the booster spring 5 is fixedly installed on the rod end retaining spring plate 10, and the booster spring 5 is nested in the upper end of the electric cylinder barrel 1 and the outer side of the lower end of the electric cylinder push rod 4.
[0023] When the electric cylinder push rod 4 is extended, the booster spring 5 will extend upward along with the rod end retaining spring plate 10; when the electric cylinder push rod 4 is retracted, the booster spring 5 will shorten downward along with the rod end retaining spring plate 10; when the electric cylinder push rod 4 is pushed to the uppermost end, the booster spring 5 is in its longest working state, at which time the length of the booster spring 5 is less than or equal to its initial length when not compressed; when the electric cylinder push rod 4 is retracted to the lowermost end, the booster spring 5 is in its shortest working state, at which time the thrust of the booster spring 5 is less than or equal to the static load pressure of the actuator.
[0024] The electrical box 11 is externally connected to a power line and an encoder line to supply power to the servo motor 2 and send control instructions, driving the electric cylinder push rod 4 to extend and retract to a specified position. When the spring-assisted upright servo electric push cylinder drives the actuator to move up and down, the assist spring 5 is always in a compressed state to provide thrust to offset part of the static load caused by the actuator's own weight, so that the output torque of the servo motor 2 can be reduced accordingly, thereby reducing power consumption.
[0025] To sum up, the utility model is a spring-assisted upright servo electric push cylinder, in which the assisting spring is always in a compressed state and provides thrust. The thrust is used to offset part of the static load caused by the actuator's own weight, so that the output torque of the servo motor is reduced accordingly, thereby reducing the static load of the servo electric cylinder, improving the thrust and pushing speed of the servo electric cylinder, and reducing the power consumption of the cylinder. It can replace the traditional upright servo electric push cylinder when performing load lifting operations, thereby extending the service life and being safe and convenient to use.
[0026] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes, and it can be fully applicable to various fields suitable for the utility model. For those familiar with the art, for ordinary technicians in the art, these embodiments can be changed, modified, replaced and modified without departing from the principle and spirit of the utility model. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the utility model is not limited to specific details.
Claims
1. A spring-assisted vertical servo electric cylinder, characterized in that: It includes an electric cylinder barrel, a servo motor, a reciprocating transmission gear box, an electric cylinder push rod, a booster spring, a left ear shaft, a right ear shaft, a rod end hinge seat, a cylinder end retaining spring plate, a rod end retaining spring plate and an electrical connection box. The housing of the servo motor is fixed to the reciprocating transmission gear box by bolts. The electric cylinder barrel drives the electric cylinder push rod to reciprocate through an internal transmission gear and a lead screw. The left ear shaft and the right ear shaft are hinged to the external fixed end and are respectively installed on the left and right sides of the reciprocating transmission gear box. The rod end hinge seat is fixedly installed on the top end of the electric cylinder push rod and is hinged to the external actuator.
2. The spring-assisted vertical servo electric cylinder according to claim 1, characterized in that: The cylinder end retaining spring plate is installed at the middle position of the outer side of the electric cylinder barrel, the rod end retaining spring plate is installed on the upper end of the electric cylinder push rod, the bottom end of the booster spring is fixedly installed on the cylinder end retaining spring plate, the top end of the booster spring is fixedly installed on the rod end retaining spring plate, and the booster spring is nested in the upper end of the electric cylinder barrel and the outer side of the lower end of the electric cylinder push rod.
3. The spring-assisted vertical servo electric cylinder according to claim 2, characterized in that: When the electric cylinder push rod is extended, the booster spring is extended upward along with the rod end retaining spring plate, and when the electric cylinder push rod is retracted, the booster spring is shortened downward along with the rod end retaining spring plate.
4. The spring-assisted vertical servo electric cylinder according to claim 1, characterized in that: When the electric cylinder push rod is pushed to the uppermost end, the booster spring is in the longest working state, and at this time the length of the booster spring is less than or equal to its initial length when it is not compressed.
5. The spring-assisted vertical servo electric cylinder according to claim 1, characterized in that: When the electric cylinder push rod is retracted to the bottom, the booster spring is in the shortest working state, and at this time, the thrust of the booster spring is less than or equal to the static load pressure of the actuator.
6. The spring-assisted vertical servo electric cylinder according to claim 1, characterized in that: The electrical box is externally connected to a power line and an encoder line to supply power to the servo motor and send control instructions to drive the electric cylinder push rod to extend and retract to a specified position. When the spring-assisted upright servo electric push cylinder drives the actuator to move up and down, the assist spring is always in a compressed state and provides thrust to offset part of the static load caused by the actuator's own weight, thereby reducing the output torque and power consumption of the servo motor.