CN211259527U

CN211259527U - High-precision large-load electric push rod

Info

Publication number: CN211259527U
Application number: CN201921702847.9U
Authority: CN
Inventors: 王高生; 陆一泓
Original assignee: Qidong Datong Electric Co ltd
Current assignee: Qidong Datong Electric Co ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-08-14
Anticipated expiration: 2029-10-12

Abstract

A high-precision heavy-load electric push rod comprises a primary pinion arranged on a motor, wherein the primary pinion is connected with a secondary pinion shaft through a primary bull gear, the secondary pinion shaft is connected with a secondary bull gear, and the secondary bull gear is connected with a tertiary bull gear through a tertiary pinion shaft; the second-stage pinion shaft and the third-stage pinion shaft are respectively installed in the box cover and the box body through a bearing I and a bearing II, the third-stage gearwheel is installed on the ball screw, and the screw nut is installed on the ball screw; the ball screw is fixed on the box cover and the box body through a bearing III and a bearing IV; the nylon uide bushing is installed in ball screw's upper end, and the nylon uide bushing is blocked with the retaining ring in the hole, and the push rod passes through the screw thread to be installed on ball screw, overlaps on the push rod and establishes the cylinder, and the cylinder passes through the screw thread to be installed on the case lid, and the adapter sleeve is installed on the push rod. The utility model realizes the design of high thrust by three-stage gear transmission, has compact and beautiful structure and reduces the occupied space; there is no risk of leakage of hydraulic oil.

Description

High-precision large-load electric push rod

Technical Field

The utility model relates to a push rod specifically is a high accuracy heavy load electric putter.

Background

The push rod is a power transmission device applied to a lifting platform, is the core of an actuating mechanism, and is more and more widely applied along with higher and higher national automation level due to high control precision. The lifting platform is used as important tool equipment and is widely applied. The existing hydraulic cylinder and electric push rod have the following defects: the traditional lifting platform adopts a hydraulic cylinder as a power transmission device and is widely applied, but the traditional lifting platform is only used in some common occasions and occasions with low precision due to the inherent characteristics of a hydraulic system; due to the size of the space, the push rod installed on the lifting platform can only generally achieve the thrust below 10 KN.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a high-precision heavy-load electric push rod, which comprises a primary pinion arranged on an output shaft of a motor, wherein the motor is fastened on a box cover through a screw and an elastic pad, and the box cover is fixedly connected with a box body through the screw and the elastic pad; the first-stage pinion is meshed with the first-stage gearwheel, the first-stage gearwheel is arranged on a second-stage pinion shaft, the second-stage pinion shaft is connected with the second-stage gearwheel, the second-stage gearwheel is arranged on a third-stage pinion shaft, and the third-stage pinion shaft is connected with the third-stage gearwheel; the second-stage pinion shaft is installed in the box cover and the box body through a bearing I, the third-stage pinion shaft is installed in the box cover and the box body through a bearing II, the third-stage gearwheel is installed on the ball screw, and the screw nut is installed on the ball screw; the ball screw is fixed on the box cover and the box body through a bearing III and a bearing IV; the nylon uide bushing is installed in ball screw's upper end, and the nylon uide bushing is blocked with the retaining ring in the hole, and the push rod passes through the screw thread to be installed on ball screw, overlaps on the push rod and establishes the cylinder, and the cylinder passes through the screw thread to be installed on the case lid, and the adapter sleeve is installed on the push rod.

The utility model adopts the three-stage gear transmission to realize the design of high thrust, and the thrust reaches 10-50 KN; the structure is compact and beautiful, and the occupied space is reduced; the control precision reaches 0.1mm precision level, and the method can be applied to automatic control occasions with high precision requirements; the risk of oil leakage of hydraulic oil is avoided, the application range of the push rod on the lifting platform is expanded, and the push rod lifting platform is particularly suitable for industries such as medical treatment and food.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the connection between the second-stage gearwheel and the third-stage gearwheel of the present invention.

In the figure, 1, a connecting sleeve, 2, a push rod, 3, a nylon guide sleeve, 4, a hole retainer ring, 5, a cylinder barrel, 6, a ball screw, 7, a screw nut, 8, a box cover, 9, a box body, 10, an oilless bearing, 11, a screw, 12, a spring washer, 13, a motor, 14, a primary pinion, 15, a primary bull gear, 16, a secondary pinion shaft, 17, a secondary bull gear, 18, a tertiary pinion shaft, 19, a tertiary bull gear, 20, a bearing I, 21, a bearing II, 22, a bearing III, 23 and a bearing IV are arranged.

Detailed Description

As shown in fig. 1 and 2, a high-precision heavy-load electric push rod comprises a primary pinion 14 mounted on an output shaft of a motor 13, wherein the motor 13 is mounted in a box cover 8 and fastened on the box cover 8 through a screw 11 and an elastic pad 12, and the box cover 8 is fixedly connected with a box body 9 through the screw 11 and the elastic pad 12; the first-level small gear 14 is meshed with the first-level large gear 15, the first-level large gear 15 is installed on the second-level small gear shaft 16, and the second-level small gear shaft 16 is installed in the box cover 8 and the box body 9 through a bearing I20. The second-stage pinion shaft 16 is connected with the second-stage gearwheel 17, the second-stage gearwheel 17 is mounted on the third-stage pinion shaft 18, and the third-stage pinion shaft 18 is mounted in the box cover 8 and the box body 9 through a bearing II 21. The third-level pinion shaft 18 is connected with the third-level gearwheel 19; the third-stage gearwheel 19 is arranged on the ball screw 6, and the screw nut 7 is arranged on the ball screw 6. The ball screw 6 is provided with a bearing III 22 and a bearing IV 23, and the ball screw 6 is fixed on the box cover 8 through the bearing III 22 and is fixed on the box body 9 through the bearing IV 23. The nylon guide sleeve 3 is installed at the upper end of the ball screw 6, the nylon guide sleeve 3 is blocked by the retainer ring 4 for the hole, the push rod 2 is installed on the ball screw 6 through threads, the cylinder barrel 5 is sleeved on the push rod 2, the cylinder barrel 5 is installed on the box cover 8 through threads, and the connecting sleeve 1 is installed on the push rod 2.

The utility model discloses main operation process: after a forward rotation electric signal is transmitted to the motor 13, the motor 13 rotates forward to drive the first-stage pinion 14 to rotate, the first-stage pinion 14 drives the first-stage gearwheel 15, the first-stage gearwheel 15 is installed on the second-stage pinion shaft 16, the second-stage pinion shaft 16 drives the second-stage gearwheel 17, the second-stage gearwheel 17 is installed on the third-stage pinion shaft 18, the third-stage gearwheel 18 drives the third-stage gearwheel 19, the third-stage gearwheel 19 is installed on the ball screw 6, the ball screw 6 drives the screw nut 7 to rotate, the push rod 2 is installed on the screw nut 7, and the push; when the reverse electric signal is transmitted to the motor 13, the motor 13 reverses to drive the primary pinion 14 to rotate, and finally the push rod 2 realizes the retraction movement.

Claims

1. The utility model provides a high accuracy heavy load electric putter which characterized in that: the motor is fixedly arranged on a box cover, and the box cover is fixedly connected with the box body; the primary pinion is meshed with the primary gearwheel, the primary gearwheel is arranged on a secondary pinion shaft, the secondary pinion shaft is connected with the secondary gearwheel, the secondary gearwheel is arranged on a tertiary pinion shaft, and the tertiary pinion shaft is connected with the tertiary gearwheel; the second-stage pinion shaft is installed in the box cover and the box body through a bearing I, the third-stage pinion shaft is installed in the box cover and the box body through a bearing II, the third-stage gearwheel is installed on the ball screw, and the screw nut is installed on the ball screw; the ball screw is fixed on the box cover and the box body through a bearing III and a bearing IV; the nylon uide bushing is installed in ball screw's upper end, and the nylon uide bushing is blocked with the retaining ring in the hole, and the push rod passes through the screw thread to be installed on ball screw, overlaps on the push rod and establishes the cylinder, and the cylinder passes through the screw thread to be installed on the case lid, and the adapter sleeve is installed on the push rod.