CN208951158U

CN208951158U - External electric driven propelling rod executes overload safety device

Info

Publication number: CN208951158U
Application number: CN201821841794.4U
Authority: CN
Inventors: 孟自明
Original assignee: Limtek (langfang) Transmission Equipment Co Ltd
Current assignee: Limtek (langfang) Transmission Equipment Co Ltd
Priority date: 2018-11-09
Filing date: 2018-11-09
Publication date: 2019-06-07
Anticipated expiration: 2028-11-09

Abstract

The utility model discloses a kind of external electric driven propelling rods to execute overload safety device; including worm screw and motor; motor shaft is provided on motor; motor shaft and worm screw are connected by the shaft coupling with torque limiter; torque limiter is ball type torque limiter; torque limiter is connected by torque limiter Gai Yuhou half a coupler, and rear half a coupler is connect with preceding half a coupler by elastomer；Torque limiter covers the groove for being equipped with and accommodating torque steel ball, is provided with arc groove corresponding with torque steel ball shape on inductive switching body；The end of motor is provided with motor connecting flange, and motor connecting flange is connect by push rod flange with worm screw, and limit switches are arranged in the outside of push rod flange.The utility model effectively prevents the generation for due to overload and causing equipment damage phenomenon, while easy to operate, simple and practical, improves the reliability of work, topology layout is reasonable, convenient for disassembly and assembly.

Description

External electric driven propelling rod executes overload safety device

Technical field

The utility model relates to electric pushrod technical fields, execute anti-mistake more particularly, to a kind of external electric driven propelling rod Carry protective device.

Background technique

Electric pushrod is that a kind of straight reciprocating motion that the rotary motion of motor is transformed into push rod is driven by electricity dress It sets, is universal auxiliary drive device, may be performed as mechanical use, to realize far distance control, centralized control or automatic Control.Electric pushrod generally comprises shell, motor, travel switch, inner and outer tubes, and inner tube is driven by the motor with respect to outer tube Linear expansion movement is carried out, pushing function is realized, has the advantages that structure is simple, transmission efficiency is high, reliable in action, each Field has a wide range of applications.General electric pushrod is during bringing onto load moves, since the loading procedure of thrust is rigidity , once overload is not prevented in time, it will result in motor rotation blockage and cause to burn, feed screw nut is severely deformed and damages, To cause equipment not to be available.For these reasons, a kind of external electric driven propelling rod execution overload safety device is designed It is necessary.

Utility model content

The purpose of the utility model is to provide a kind of external electric driven propelling rods to execute overload safety device, effectively prevents Stop the generation that equipment damage phenomenon is caused due to overload, while easy to operate, it is simple and practical, improve the reliable of work Property, topology layout is reasonable, convenient for disassembly and assembly.

To achieve the above object, the utility model provides a kind of external electric driven propelling rod execution antioverloading protection dress It sets, including worm screw and motor, motor shaft is provided on the motor, the motor shaft and the worm screw pass through band torque limiter Shaft coupling connection, the shaft coupling includes preceding half a coupler, elastomer, rear half a coupler and torque limiter, the torque Limiter is ball type torque limiter, and the torque limiter is connected by torque limiter lid and the rear half a coupler It connects, the rear half a coupler is connect with the preceding half a coupler by the elastomer；

The side of the torque limiter is provided with inductive switching body, and the side of the inductive switching body is provided with spring；

The torque limiter covers the groove for being equipped with and accommodating torque steel ball, be provided on the inductive switching body with it is described The corresponding arc groove of torque steel ball shape；

The end of the motor is provided with motor connecting flange, and the motor connecting flange passes through push rod flange and the snail Limit switches are arranged in the outside of bar connection, the push rod flange.

Preferably, the spring is disk spring.

Preferably, the push rod flange is bolted with the motor connecting flange.

Preferably, the rear half a coupler of the motor axis connection is connect by bolt with the torque limiter.

Therefore, the external electric driven propelling rod of the utility model using the above structure executes overload safety device, effectively Ground prevents the generation for due to overload and causing equipment damage phenomenon, while easy to operate, simple and practical, and improve work can By property, topology layout is reasonable, convenient for disassembly and assembly.

Below by drawings and examples, the technical solution of the utility model is described in further detail.

Detailed description of the invention

Fig. 1 is the cross-sectional view that a kind of external electric driven propelling rod of the utility model executes overload safety device embodiment；

Fig. 2 is the external structure that a kind of external electric driven propelling rod of the utility model executes overload safety device embodiment Schematic diagram；

Fig. 3 is the top view that a kind of external electric driven propelling rod of the utility model executes overload safety device embodiment.

Specific embodiment

Embodiment

Fig. 1 is the cross-sectional view that a kind of external electric driven propelling rod of the utility model executes overload safety device embodiment, Fig. 2 is the external structure schematic diagram that a kind of external electric driven propelling rod of the utility model executes overload safety device embodiment, Fig. 3 is the top view that a kind of external electric driven propelling rod of the utility model executes overload safety device embodiment.As shown, The utility model provides a kind of external electric driven propelling rod execution overload safety device, including worm screw 1 and motor 2, motor 2 On be provided with motor shaft 3, motor shaft 3 is connect with worm screw 1 by the shaft coupling with torque limiter, and the shaft coupling includes first half Shaft coupling 4, elastomer 5, rear half a coupler 6 and torque limiter 7, torque limiter 7 are ball type torque limiter, and torque Limiter 7 is connect by torque limiter lid 8 with rear half a coupler 6, and rear half a coupler 6 passes through elastomer 5 with preceding half a coupler 4 Connection, the rear half a coupler 6 that motor shaft 3 connects are connect by bolt with torque limiter 7；The side of torque limiter 7 is arranged There is inductive switching body 9, the side of inductive switching body 9 is provided with spring 10, and spring 10 is disk spring；On torque limiter lid 8 Equipped with the groove for accommodating torque steel ball 11, arc groove corresponding with 11 shape of torque steel ball is provided on inductive switching body 9；It crosses Torque steel ball when load in torque limiter comes out in groove, and pull switch inductor compresses disk spring to the left, this time limit Bit switch induction, illustrates to overload, and since torque steel ball has been detached from groove when overload, the rotation of motor cannot be transmitted to and electricity The connected rear half a coupler of arbor plays a protective role.

The end of motor 2 is provided with motor connecting flange 12, and motor connecting flange 12 is connected by push rod flange 13 and worm screw 1 It connects, limit switches 14 are arranged in the outside of push rod flange 13, and push rod flange 13 is connected to motor flange 12 and is bolted.

The utility model is provided with torque limiter between motor and worm screw, and installation one limit switch in centre passes through Limit switch acts to monitor the device whether push rod overloads, and advantage is securely and reliably, simply and readily to operate, it is therefore prevented that Machinery is impaired, avoids expensive shutdown loss.In the process of work, the worm screw side on electric pushrod is connected to motor, Motor is connected by intermediate torque limiter with worm shaft, is passed to worm gear and is driven lead screw rotation, spiral shell is equipped on lead screw Mother drives telescoping tube linear reciprocating motion by nut.Electric pushrod is to complete push pull maneuver using the positive and negative rotation of motor, when When electric pushrod overloads, the output torque of motor just will increase to be more than the nominal torque value of torque limiter setting, once More than the torque value, torque steel ball will be detached from out of torque limiter covers groove, and at this time although motor shaft continues to rotate, But since torque steel ball has been detached from operating position, so the rotary motion of motor cannot pass to rear half a coupler, to reach Pass to the purpose of worm screw, worm screw stop motion to cutting motor movement, electric pushrod is just shut down, simultaneously because torque steel ball from It is detached from the groove that torque limiter covers, so that steel ball moves downward extrusion torque killer swich inductor, inductive switching Body squeezes disk spring to the left, since inductive switching body position changes, triggers limit switch, the instruction of limit switch will be moved Make, issue alarm, electric pushrod stop motion causes limit switch indicator light to be gone out by bright turn, and action signal occurs for limit switch. When external loading becomes smaller, torque needed for worm shaft also becomes smaller, and disk spring is restored to original position by deformation, causes Also return, switch turn bright by going out, action signal occur the torque steel ball of inductive switching body and torque limiter, and electric pushrod is normal Operation.

Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model rather than limit it System, although the utility model has been described in detail with reference to the preferred embodiment, those skilled in the art should manage Solution: it still can be with the technical solution of the present invention is modified or equivalently replaced, and these are modified or equally replace Changing also cannot make modified technical solution be detached from the spirit and scope of the technical scheme of the present invention.

Claims

1. a kind of external electric driven propelling rod executes overload safety device, including worm screw and motor, it is characterised in that:

Motor shaft is provided on the motor, the motor shaft is connect with the worm screw by the shaft coupling with torque limiter, The shaft coupling includes preceding half a coupler, elastomer, rear half a coupler and torque limiter, and the torque limiter is ball type Torque limiter, and the torque limiter is connect by torque limiter lid with the rear half a coupler, the later half shaft coupling Device is connect with the preceding half a coupler by the elastomer；

The torque limiter covers the groove for being equipped with and accommodating torque steel ball, is provided with and the torque on the inductive switching body The corresponding arc groove of steel ball shape；

The end of the motor is provided with motor connecting flange, and the motor connecting flange is connected by push rod flange and the worm screw It connects, limit switches are arranged in the outside of the push rod flange.

2. external electric driven propelling rod according to claim 1 executes overload safety device, it is characterised in that: the bullet Spring is disk spring.

3. external electric driven propelling rod according to claim 2 executes overload safety device, it is characterised in that: described to push away Bar flange is bolted with the motor connecting flange.

4. external electric driven propelling rod according to claim 3 executes overload safety device, it is characterised in that: the electricity The rear half a coupler of arbor connection is connect by bolt with the torque limiter.