CN222169523U - Spring-assisted vertical type servo electric push cylinder - Google Patents

Abstract

The utility model discloses a spring-assisted vertical type servo electric push cylinder, wherein a servo motor shell is fixed on a turn-back type transmission gear box, a cylinder end snap spring plate is arranged in the middle of the outer side of the cylinder barrel of the electric cylinder through a transmission gear in the cylinder barrel of the electric cylinder and a screw rod driving the cylinder push rod to reciprocate in the cylinder barrel of the electric cylinder, a rod end snap spring plate is arranged at the upper end of the cylinder push rod, the bottom end of a power-assisted spring is fixedly arranged on the cylinder end snap spring plate, the top end of the power-assisted spring is fixedly arranged on the rod end snap spring plate, a left trunnion and a right trunnion are respectively arranged at the left side and the right side of the turn-back type transmission gear box and are hinged with an external fixed end, and an electric box is connected with an external power wire and an encoder wire to supply and send control instructions for the servo motor. According to the utility model, the load lifting is carried out in a servo spring follow-up mode, so that the static load of the servo electric cylinder is reduced, the thrust and the push speed of the electric cylinder are improved, and the power consumption of the electric cylinder is reduced.

Description

Spring-assisted vertical type servo electric push cylinder

Technical Field

The utility model belongs to the technical field of a vertical lifting driving mechanism, and relates to a spring-assisted vertical type servo electric pushing cylinder.

Background

The vertical type servo electric pushing cylinder is a driving part used for driving common engineering structures such as a lifting platform, a lifting arm support, a telescopic mast and the like, and has the advantages of high precision, quick response, good stability and the like. However, for most of the vertical servo electric pushing cylinders, the static load generated by the self weight of the actuating mechanism is overcome besides the motion load caused by the action of the actuating mechanism during the working.

Especially for heavy-duty mechanism, when actuating mechanism moves with ascending acceleration, the direction of dynamic load and dead load can take place to coincide, leads to the electricity to push away the jar and has a great power peak value, and then needs great rated power when carrying out the electricity and push away jar motor selection, has caused serious waste, and too big peak load also can lead to the life of electricity to push away jar to shorten, the security reduces simultaneously.

Disclosure of utility model

Aiming at the problems in the prior art, the application provides a spring-assisted vertical type servo electric pushing cylinder.

The technical scheme of the utility model is as follows:

The utility model provides a vertical type servo electricity push cylinder of spring helping hand, includes electric cylinder barrel, servo motor, turn back type drive gear box, electric cylinder push rod, helping hand spring, left side trunnion, right side trunnion, rod end hinged support, jar end spring clamping plate, pole end spring clamping plate and electric box, servo motor's shell passes through the bolt fastening and is in turn back on the drive gear box, the electric cylinder barrel passes through inside drive gear and lead screw drive the reciprocating motion is done to the electric cylinder push rod, left side trunnion with right side trunnion is articulated and installs respectively with outside stiff end turn back the left and right sides of drive gear box, rod end hinged support fixed mounting is in the top of electric cylinder push rod and articulated with outside actuating mechanism.

As a preferable implementation mode of the utility model, a cylinder end snap spring plate is arranged at the middle position of the outer side of the cylinder barrel of the electric cylinder, a rod end snap spring plate is arranged at the upper end of the push rod of the electric cylinder, the bottom end of the power-assisted spring is fixedly arranged on the cylinder end snap spring plate, the top end of the power-assisted spring is fixedly arranged on the rod end snap spring plate, and the power-assisted spring is nested at the upper end of the cylinder barrel of the electric cylinder and the outer side of the lower end of the push rod of the electric cylinder.

As a preferred embodiment of the utility model, the booster spring extends upwardly with the rod end circlip plate when the electric cylinder pushrod is extended and shortens downwardly with the rod end circlip plate when the electric cylinder pushrod is retracted.

In a preferred embodiment of the present utility model, when the cylinder push rod is pushed to the uppermost end, the booster spring is in the longest operation state, and the length of the booster spring is less than or equal to the initial length when the booster spring is not compressed.

As a preferable implementation mode of the utility model, when the electric cylinder push rod is retracted to the bottommost end, the power-assisted spring is in the shortest working state, and the thrust of the power-assisted spring is smaller than or equal to the dead load pressure of the actuating mechanism.

As a preferred implementation mode of the utility model, a power line and an encoder line are externally connected with the power box, so as to supply power to the servo motor and send control instructions, the electric cylinder push rod is driven to stretch to a designated position, and when the vertical type servo electric push cylinder driven executing mechanism assisted by the spring is lifted, the assisting spring is always in a compressed state and provides thrust, so that dead load caused by the weight of part of executing mechanism is counteracted, and the output torque and power consumption of the servo motor are reduced.

The beneficial effects of the utility model are as follows:

According to the spring-assisted vertical type servo electric pushing cylinder, the arranged assisting spring is always in a compressed state and provides thrust force for counteracting static load caused by the weight of a part of actuating mechanism, so that the output torque of a servo motor can be correspondingly reduced, the static load of the servo electric cylinder is reduced, the thrust force and the pushing speed of the servo electric cylinder are improved, meanwhile, the power consumption of the electric cylinder is reduced, the traditional vertical type servo electric pushing cylinder can be replaced when the working condition of load lifting is carried out, the service life of the electric pushing cylinder is prolonged, and the spring-assisted vertical type servo electric pushing cylinder is safe and convenient.

Drawings

FIG. 1 is a perspective view of the present utility model in an extended state;

FIG. 2 is a perspective view of the present utility model in a retracted state;

FIG. 3 is a schematic diagram of the structure of the present utility model;

FIG. 4 is a force balancing schematic of the present utility model;

Fig. 5 is a force balance diagram of a conventional electric cylinder.

In the figure, a cylinder barrel of a 1-electric cylinder, a 2-servo motor, a 3-foldback transmission gear box, a 4-electric cylinder push rod, a 5-power spring, a 6-left trunnion, a 7-right trunnion, a 8-rod end hinged seat, a 9-cylinder end clamping spring plate, a 10-rod end clamping spring plate and an 11-power connection box are shown.

Detailed Description

The present utility model will be described in detail below with reference to the drawings and examples. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1-5, a spring-assisted upright type servo electric push cylinder comprises an electric cylinder barrel 1, a servo motor 2, a turn-back type 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 hinged support 8, a cylinder end clamp spring plate 9, a rod end clamp spring plate 10 and an electric receiving box 11, wherein the shell of the servo motor 2 is fixed on the turn-back type transmission gear box 3 through bolts, the electric cylinder barrel 1 drives the electric cylinder push rod 4 to do reciprocating motion through an internal transmission gear and a screw rod, the left ear shaft 6 and the right ear shaft 7 are hinged with an external fixed end and are respectively arranged on the left side and the right side of the turn-back type transmission gear box 3, and the rod end hinged support 8 is fixedly arranged at the top end of the electric cylinder push rod 4 and hinged with an external executing mechanism.

The cylinder end clamping spring plate 9 is arranged at the middle position of the outer side of the electric cylinder barrel 1, the rod end clamping spring plate 10 is arranged at the upper end of the electric cylinder push rod 4, the bottom end of the power assisting spring 5 is fixedly arranged on the cylinder end clamping spring plate 9, the top end of the power assisting spring 5 is fixedly arranged on the rod end clamping spring plate 10, and the power assisting spring 5 is nested at the outer side of the upper end of the electric cylinder barrel 1 and the lower end of the electric cylinder push rod 4.

When the electric cylinder push rod 4 stretches out, the power-assisted spring 5 stretches upwards along with the rod end clamping spring plate 10, when the electric cylinder push rod 4 is retracted, the power-assisted spring 5 shortens downwards along with the rod end clamping spring plate 10, when the electric cylinder push rod 4 pushes to the uppermost end, the power-assisted spring 5 is in the longest working state, the length of the power-assisted spring 5 is smaller than or equal to the initial length of the electric cylinder push rod when the electric cylinder push rod 4 is not compressed, when the electric cylinder push rod 4 is retracted to the bottommost end, the power-assisted spring 5 is in the shortest working state, and the thrust of the power-assisted spring 5 is smaller than or equal to the dead load pressure of the actuating mechanism.

The power connection box 11 is externally connected with a power line and an encoder line, and is used for supplying power to the servo motor 2 and sending a control instruction, the driving cylinder push rod 4 stretches to a designated position, and when the vertical type servo electric push cylinder driving execution mechanism assisted by the spring lifts, the assisting spring 5 is always in a compressed state and provides thrust, static load brought by the weight of part of the execution mechanism is counteracted, so that the output torque of the servo motor 2 can be correspondingly reduced, and the power consumption is reduced.

In summary, according to the spring-assisted vertical type servo electric pushing cylinder, the arranged assisting springs are always in a compressed state and provide thrust, the thrust is used for counteracting static load caused by the weight of part of the actuating mechanism, so that the output torque of the servo motor is correspondingly reduced, the static load of the servo electric cylinder is reduced, the thrust and pushing speed of the servo electric cylinder are improved, meanwhile, the power consumption of the electric cylinder is reduced, the traditional vertical type servo electric pushing cylinder can be replaced when the working condition of load lifting is carried out, the service life is prolonged, and the spring-assisted vertical type servo electric pushing cylinder is safe and convenient to use.

Although the embodiments of the present utility model have been disclosed in the foregoing description and drawings, it is not limited to the details of the embodiments and examples, but is to be applied to all the fields of application of the present utility model, it will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims (6)

1. A spring-assisted upright servo electric push cylinder, characterized in that it includes 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, and the rod end hinge seat is fixedly installed on the top of the electric cylinder push rod and is hinged to an external actuator. 2. The spring-assisted upright servo electric cylinder as described in claim 1 is characterized in that: 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 assisting spring is fixedly installed on the cylinder-end retaining spring plate, the top end of the assisting spring is fixedly installed on the rod-end retaining spring plate, and the assisting 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 upright servo electric cylinder as described in claim 2 is characterized in that: when the electric cylinder push rod is extended, the assist spring extends upward along with the rod end retaining spring plate, and when the electric cylinder push rod is retracted, the assist spring shortens downward along with the rod end retaining spring plate. 4. The spring-assisted upright servo electric cylinder as described in claim 1 is characterized in that when the electric cylinder push rod is pushed to the uppermost end, the assist spring is in its longest working state, and at this time the length of the assist spring is less than or equal to its initial length when it is not compressed. 5. The spring-assisted upright servo electric cylinder as described in claim 1 is characterized in that when the electric cylinder push rod is retracted to the bottom, the assist spring is in the shortest working state, and at this time the thrust of the assist spring is less than or equal to the static load pressure of the actuator. 6. The spring-assisted upright servo electric push cylinder as described in claim 1 is 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.