SU1488405A1 - Drive of working member and conveyer of bucket-wheel trencher - Google Patents

Description

The invention relates to earth moving equipment. The purpose of the invention increase the durability of the drive. The conveyor drive reducer has a drive shaft (BB) 20, a hollow primary shaft (PV) .16, the middle part of which has external splines 38 and internal splines 19, gears 35 and 36 and a gear coupling 37 located on the PV 16. Hollow semi-rollers BB 20 and the corresponding coupling halves (PM) 23 and 24 have the right

00

00

ABOUT

cl

FIG. I

3

1488405

four

The left and left threads are 22, and the opposite ends of the half-shafts are the splines 28, which are in engagement with the splines 19, and the incisors 22 are with the coupling 37 "The covers 33 are fixed to PM 23 and 24, which through bearings 25 are located in the gearbox housing with emphasis in the ends of the halves of the explosives 20 through thrust bearings 26 and spherical bushings 27 "The hollow semi-shafts of the explosives 20 are interconnected by a nut 31 and screws 29 and 30, whose heads and covers 33 PM 23 and 24 are interconnected by springs 32 with the possibility of axial displacement of hollow poluvalov BB 20, Many;

The lead thread 22 has a lifting angle of 30-45 *. To drive the conveyor, the corresponding gears 35 or 36 are turned on by means of the clutch 37. Axial forces are perceived by thrust bearings 26 and spherical bushings 27 and PV 16 are mutually balanced. Axial forces are perceived through bearings 25 and bushings 27 in reverse rotation, mutually balanced by gearbox housing 13, Axial the forces acting on the BB 20 are perceived by screws 29 and 30 and the nut 31 or parts BB 20 and the nut 31. 1 з.п, ф-л, 3 Il.

““ ·

The invention relates to earth moving equipment, and more specifically to rotary trench excavators.

The purpose of the invention is to increase the drive length.

Figure 1 shows the kinematic diagram of the drive of the working body and the conveyor; FIG. 2 shows a conveyor drive reducer; on fig.Z - βθ

node I in FIG. 2.

The power from the engine is transferred to the rotor drive reducer 1 with a built-in bevel differential 2, with which it is divided in half and goes through half axes 3 and 4 to chain gears 5 and 6 located on both sides, the chain gears rotate half of the shaft 7 and 8, on

which are fixed gears 9 and 10 '_

41 ”

the rotor drive meshed with the teeth of the rails 11 on the right and left side of the rotor 12, In the middle between the rotor drive shaft openings, the conveyor drive gear 13 is located, the drive shaft of which is connected simultaneously by the chain couplings 14 and 15 to the rotor drive shaft. From the gear drive of the conveyor 13, the rotation is transmitted through cardan gears to the drums of the conveyor.

The primary shaft 16 of the gearbox is installed in the housing 17 on the bearings 18.

In the middle part of the primary shaft are situated straight internal splines 19. Inside the primary shaft pro- ^'5 goes to the drive shaft 20, the ends of which are cut right 21 and left 22 multistart trapezoidal thread.

At the ends of the shaft 20, chain coupling halves 23 and 24 are worn, with right and left internal threads, respectively. Chain coupling halves 23 and 24 are connected to the rotor drive half-shaft 7 and 8 and mounted coaxially with the primary shaft 16 in the gearbox housing on the bearings 25. On the inner side, the inner race of the bearings 25 is limited by a split thrust ring mounted on the half-coupling hubs 23 and 24. Internal the ends of the chain coupling halves 23 and 24 abut the primary shaft. 16 through thrust bearings 26 and spherical bushings 27, the drive shaft 20 is made up of two parts with straight outer splines 28 at the inner ends. Both parts of the composite drive shaft 20 are connected by screws 29 and 30 and a nut 31 located inside the input shaft between these parts. At the ends of the drive shaft 20 inside it there are springs 32, resting against the screws 29 and 30 and the covers 33 of the chain coupling halves.

Both parts of the drive shaft '20 have the possibility of joint axial movement along the splines 19 to the right and left by the size of the gap A. Gears 35 and 36 of different diameters are worn on the primary shaft 16 on bearings 34. Using a gear coupling 37 moving along the outer splines 38 of the input shaft 16, gears 35 or 36 can be connected to it by switching on the normal or reduced speed of the conveyor belt. Neck1488405

6

The thorns 35 and 36 are in engagement with the gears block 39, which is connected via gear 40 to the output shaft 41 of the gearbox, from both ends of the output shaft 41 go cardan gears 42 to the conveyor drums.

The drive works as follows.

From the motor shaft (figure 1) through the gearbox of the rotor drive 1 with a tapered differential 2 divided in half the time with the compensation of all errors and manufacturing inaccuracies is transmitted to two parallel branches of the chain gears 5 and 6. They are driven by the semi-shafts 7 and 8 of the rotor drive, which located on both sides of the gears 9 and 10, which are engaged with the rails 11, rotor 12 is driven into rotation. The drive gearbox of the conveyor 13 located between the half-shafts receives rotation from both half-shafts of the rotor drive at the same time in not preventing certain one-turn half-shafts relative to each other due to variations in the step of cast rails on the right and left sides ..

The drive shaft 20 through the splines 28 transmits rotation to the primary shaft 16, on which gears 35 and 36 are located on bearings 34. Including one or the other gears 35 and 36 using a gear coupling 37, the normal or reduced speed of the conveyor belt is activated. From the gear 35 or gear 36, the rotation is transmitted to the gear block 38, and from there to the driven output shaft 41 and through the driveline 42 to the conveyor drums.

When working on the chain coupling halves 23 and 24, axial forces act, which are perceived by the thrust bearings 26 and spherical bushings 27 and are mutually balanced by the input shaft 16. In the reverse rotation, the axial forces act in the opposite direction and are perceived through radial bearings 25 and the stop spring rings, and mutually balanced by gearbox housing.

Axial forces acting in opposite directions on the two parts of the drive shaft 20, are perceived by direct rotation by screws 29 and 30 passing through it and by nut 31, while rotating to the opposite side by counter-rest of both parts of shaft 20 through nut 31.

If during operation, one chain half coupling starts to drive, and the second does not transfer the load, i.e. the semi-shaft cuts off and forms a gap, then the first chain clutch is rotated and due to

10, a multiple trapezoidal thread causes the composite drive shaft 20 to move in the axial direction towards the other coupling.

Moving inside the primary shaft 15, the drive shaft 20, using a multiple thread in the opposite direction at the other end, causes the chain clutch to turn in the opposite direction until

2o until she starts to transfer the load from the other half-shaft too. The process can go from left to right or right to left.

25

Claims (2)

Claim 1. The drive of the working body and conveyor of a rotary trench excavator, including differential 30 A rotor drive gearbox, which is connected with chain drives of the two-shaft rotor gearboxes and a conveyor drive gearbox located between them, the ends of the drive shaft of which are connected by coupling halves. The rotor drive shaft openings coaxially mounted with the drive shaft in the gear case of the conveyor drive gear, and located between 40 they are a gear coupling with slots with the possibility of alternating connection with gears, which are kinematically connected with a conveyor, characterized in that, with the aim 45 increase the durability of the drive, the conveyor drive reducer is equipped with a hollow primary shaft installed coaxially with the drive shaft, the middle part of which has external and 50 internal splines, with gears and a gear coupling located on the primary shaft, and the drive shaft is made of hollow semi-shafts, one ends of which and the corresponding coupling half have 55 right and left threads, and the opposite ends of the half of the shaft have slots, and the semi-shafts are aligned inside the primary shaft with the ability to interact with their con7 1488405 eight with internal splines of the primary shaft and half-coupling threads that have covers, and are arranged by bearings in the housing of the conveyor drive reducer with an emphasis on the ends of the primary shaft by means of thrust bearings and spherical bushings, while the hollow semi-shafts are interconnected by means of spaced inner sleeves nuts and screws, the heads of which and the half-coupling covers are interconnected by means of springs with the possibility of axial displacement hollow in the low-sided direction 2 _O Drive according to π.1, which is the fact that on each leading semi-shaft the thread is made multiple with a lifting angle of 30 .. 45 ^e . 1488405