First bearing take-out device and method of spindle of automatic gearbox of truck

Abstract

The invention discloses a first bearing take-out device and method of a spindle of an automatic gearbox of a truck. The device comprises a mechanical mechanism and an electronic control hydraulic system, wherein bearing pedestal stress ends (14) are arranged at the bearing connecting end of the mechanical mechanism, the bearing pedestal stress ends are inserted in the gap between a first bearing pedestal (102) and a second bearing pedestal (103) and attached to the first bearing pedestal, and thus the mechanical mechanism is installed on a first bearing (101); and oil cylinder stress ends (12)are arranged at the hydraulic connecting end of the mechanical mechanism, the oil cylinder stress ends (12) are matched and buckled with a hydraulic oil cylinder (30) of the electronic control hydraulic system, a piston of the hydraulic oil cylinder and the spindle (100) are in coaxial contact and connection, a cylinder body drives the mechanical mechanism to move, and the first bearing pedestaland the first bearing move synchronously. Reasonable and effective pulling force on the bearing is realized, the take-out process does not cause any damage to the bearing, the bearing take-out processis safe and efficient, the whole process is controllable, and the bearing is taken out in a good condition.

Description

Technical field [0001] The invention relates to an auxiliary tool for maintenance of a truck gearbox and a use method thereof, in particular to a device and method for taking out a first bearing of a main shaft of an automatic gearbox of a truck. Background technique [0002] The Mercedes-Benz ACTROS4141 truck is one of the main models of the Ministry of Transport. The vehicle mainly undertakes the transportation of main and auxiliary raw materials in the factory, including: water slag, coke, asphalt ash, dry slag, gas ash, hot briquette, lime powder and other materials transport. The vehicle adopts an automatic gearbox (16 forward gears and 2 reverse gears), which does not require manual control of gears. The vehicle module control system will automatically switch gears according to signals such as vehicle speed, load, throttle, and brakes. The degree of operation load of the driver is reduced. Due to road restrictions in the factory area, vehicles stop and start more frequent...

AI Technical Summary

Problems solved by technology

[0006] 1. Use puller jaws, such as two-corner and triangle pullers commonly used in the market. Due to the structure and strength of the puller, in order to ensure sufficient strength, the puller head of the puller is too large to penetrate into the first bearing seat and The clearance of the second bearing seat caused the failure of the first bearing to be taken out

If the puller is specially made according to the structure of the bearing, not only the cost is high, but also the bearing cannot be taken out, and the bearing balls are easily damaged during the taking out process

[0007] 2. Using chisels, crowbars, hammers and hot work to remove the bearing will not only cause damage to the bearing, but will also cause damage to other related accessories on the main shaft, resulting in the problem that the main shaft cannot continue to be used. Expenses and cost increases caused by replacement of new spare parts

[0008] 3. The destructive demolition is carried out by air gun cutting, but the main shaft is damaged during the cutting process. The automatic transmission has very high requirements on the precision of each component. After the main shaft is damaged, it cannot continue to be used and must be replaced with a new one. This has led to an increase in the cost of spare parts. According to statistics, the factory needs to disassemble about 59 gearboxes within a year. The frequency of maintenance is high, and the problem of cost and cost has always plagued the maintenance personnel and technicians on site.

Images