SU1257140A1 - Working equipment of dragline - Google Patents

Description

one

The invention relates to earthmoving machines, and specifically to the working equipment of a dragline excavator.

The purpose of the invention is to increase productivity and improve unloading under the boom.

Figure 1 shows the excavator, side view; figure 2 - bucket; in Fig. 3, a corkscrew, side view; Fig 4, 5 - the same; figure 6 is an additional arch, front view; 7 - the same, side view; on Fig the same, top view; figure 9 is a section aa and ia of figure 8; figure 10 is a diagram of the installation of an additional winch; figure 11 - the same, relying winch; 12 to 15 show the moments of tipping the bucket onto a tooth; Fig. 16 is a kinematic scheme for traction and lifting winches; on Fig - the same, tipping winch; on Fig - the same holding winches; on Fig - cab driver; Fig. 20 is an electrical diagram of a holding and tilting winches.

Working equipment contains boom 1, bucket 2, hauling ropes 3, hoisting ropes 4, holding rope 5, tipping rope 6 (figure 1

 At the bottom of the boom 1 there are two rollers 7 and 8, which prevent shocks and friction of the tilting rope 6 about the details of the boom 1. On the rotary platform of the excavator, besides the thrust and lifting winch, there are tilting 9 and holding 10 winches.

Two blocks are additionally installed on the superstructure, block 11 for the tilting rope 6 and block 12 for the retaining rope 5.

The bucket with the harness (Figures 2–5) contains the traction chains 13, the additional chains 14, the expansion beam of the traction chains. 15, an additional arch 16, a platform 17 mounted on the additional arch 16, lifting chains 18, a spreading beam of the lifting chains 19. For the retaining rope 5 on the yoke for fastening the lifting ropes 4, the roller 20 is installed and the block 21 on the beam of the tubular section, which is the top of the main arch

bucket, and block 22.

The platform 17 is equipped with guide posts and an anvil roller 23 for the tilting rope 6 and four rollers, 24 for the arms

57140D

rope 5, going from block 22 to block 21 and roller 20 (Fig.6 - 8).

The cross section of the additional arch box 16 (Fig.9) On the rear wall

5 bucket fixed lever 25 (figure 10). To the lever 25 pivotally with the help of crushing 26 attached to the end of the tipping rope 6, the second end of this rope is fixed to the tipping drum

0 winch 9 ..

The end of the rope 5 is fastened to the block 22 by means of a wedge clamp 27, the second end is secured to the drum-holding winch

5 to (FIG. 11). At the top of the boom

1, between the head blocks of the hoisting ropes, a block 28 is installed for the holding back cable 5. In the interval from the hoisting ropes balancer to the upper part of the arch of the bucket, the rope 5 passes through the system of blocks 21 and 22, which form a three-time polyspast, where block 21 is conditionally, fixed, and the block 22 25 moving.

Rollers 29 are installed on the back wall of the bucket, which prevent friction of the branches of the retaining rope 5 against the back wall of the bucket (Fig. 15).

30 The ends of the lifting chains 18 and the pull chains 13 with the help of the earrings 30 are hingedly attached to the same fingers, the trunnions, which are semi-axes (Figures 2-4). The axle supports are side walls of the bucket and eyelets fixed to the side walls. Such a combination of a bucket with chains and the presence of expansion beams on chains ensures rotational movement.

diy bucket in a vertical plane with tensioned lifting 18 and traction 13

about

chains in the range of 70 ... 75.

Rope 5 keeps bucket 2 from tipping over the teeth during digging 45 (Figures 11 - 13).

IfeifeT 6 overturns the bucket 2 on the teeth during its unloading (figure 10, 14, 15).

The length of the additional chains 14 is set so that, with the tensioned thrust pins x 13, the bottom of the scoop

2 was parallel to the axis of the tow rope 3 or had a slope of 5 ... 8 towards the rear wall of the bucket 2.

55 The circumferential force on the drum of the winch 9 when digging and moving the bucket 2 from the bottom to the place of unloading and back is the minimum equal to the weight

five

loose rope 6 to prevent the rope 6 from loosening and tangling on the winch drum 9.

When tipping the loaded bucket 2 onto the teeth, these forces are equal to approximately 1/4 of the weight of the loaded bucket.

The circumferential force on the drum of the holding winch 10 varies. During the overturning of the bucket on the teeth with the help of the tilting rope 6, the circumferential force on the drum of the holding winch 10 is zero, since the directions of forces on the branches of the chain pulley of the rope 5 prevent the rotational movement of the bucket 2 from the tilting rope 5 of rope 6 (- 15). When the bucket 2 is loosely suspended, when you move it from the bottom to the point of unloading and back, the forces on the holding cable 5 are minimal — equal to the weight of the loose 20 cable 5. While digging, the forces on the holding cable 5 are proportional to the forces that occur on the traction 3. When the winch is operated, the current is rigidly connected to the winding between the electric winch winder and the holding winch 10, which provides a stable position of the bucket 2 from tipping it over the tooth when digging,

With the help of a rope 3, the bucket 2 is moved along the ledge from bottom to top, while cutting off the chips of the rock mass 150-300 mm. The thickness of the cutting chip 2 is set above the desired unloading point or vehicle.

 After the bucket 2 is installed above the unloading point, the button 44 increases the current in the circuit of the tilting winch motor 35 and decreases the current in the motor 38 of the holding winch 10 to zero and the bucket 2 under the influence of force P (Fig.14 - 15 ) turns B earrings 30 and the forge mass is poured out of the bucket 2.

During unloading using hoisting rope 4 and pulling 3, the bucket 2 can be moved in the plane of the boom 1, as well as by turning the turntable) in the horizontal plane, which allows the soil to be evenly distributed when loaded in vehicles or platforms, without spilling, thereby reducing bulldozer planning work.

When the bucket 2 is unloaded, the button 44 is released and the bucket 2 returns to the position fixed by additional chains 14. Under the force of gravity, the return of the bucket 2 from the vertical position can be accelerated. A button 43 can be horizontal.

Bucket 2 is controlled by an electric drive. The twists are adjusted by the hoisting rope 4. ". m, ".. 35 moment from two electric motors

31 is transmitted through the elastic sleeves 32 and through the reducer 33 to the drums 34, which, through the ropes 3, transmit force to the mat 2.

From the electric motor 35, a cool moment is transmitted through the elastic coupling- :: that 36 and the reduction gear 37 to the drum of the winch 9, which through the cable 6 transfers the force to the back wall of the bucket 2.

The torque from the electric motor 38 is transmitted through the elastic coupling 39, the gear 40, the coupling 41 to

The most difficult position is for excavation, when the digging depth is maximum, the bucket 2 is on the sole and the hoisting ropes 4 are upright (Fig. 12). For this and the second position, a button 43 for keeping the bucket 2 from tipping is provided.

The movement of the bucket along the ledge is carried out by the force F, which through the ropes 3 is transferred to the bucket 2. Keeps the bucket 2 from tipping to the teeth the force Q t of the bucket's hardness and the total force

F from the branches of the holding rope 5, which is transmitted to the upper part of the main arch of the bucket 2 (Figures 12-13).

The removal of the bucket 2 from the bottom is made by a lifting rope 4.

Simultaneously with the lifting of the bucket 2 upward turn turns. The turntable with the boom 1 is moved to the discharge area (Fig. 1). With the help of lifting 4, t 3 ropes and turning the turntable

the winch drum 10, which, through the rope 5 and block 22, transmits traction. 50 force on the main arch of the bucket 2.

One of the drums of the pull and hoist winch has a sleeve 42, by means of which the tension of the ropes is equalized during their replacement.

In the driver's cab (Fig. 19), a button is located on the lever of the controller for controlling the traction winch.

bucket 2 is installed above the desired unloading point or vehicle.

 After the bucket 2 is installed above the unloading point, the button 44 increases the current in the circuit of the tilting winch motor 35 and decreases the current in the motor 38 of the holding winch 10 to zero and the bucket 2 under the influence of force P (Fig.14 - 15 ) turns B earrings 30 and the forge mass is poured out of the bucket 2.

During unloading using hoisting rope 4 and traction 3, the bucket 2 can be moved in the plane of the boom 1, as well as by rotating the tilting platform) in the horizontal plane, which allows the soil to be evenly distributed without being spilled when loaded into vehicles or platforms, thereby reducing planning bulldozer work.

When the bucket 2 is unloaded, the button 44 is released and the bucket 2 returns to the position fixed by additional chains 14. Under the force of gravity, the return of the bucket 2 from the vertical position can be accelerated. A button 43 can be horizontal.

The bucket 2 was controlled by the winch drum 10, which, through the rope 5 and the block 22, transmits traction. force on the main arch of the bucket 2.

One of the drums of the pull and the lifting of the winches has a sleeve 42, by means of which the tension of the ropes is equalized when they are replaced.

In the driver's cab (Fig. 19), a button is located on the lever of the controller for controlling the traction winch.

51

43 (UKOO) keeping the bucket 2 from rolling out, and on the lever of the steering wheel control roller of the hoist winch control - button 44 (VK) unloading the bucket with normally open and normally closed contacts.

The excavator works as follows.

When returning the bucket 2 from the vertical position to the horizontal

571406

tipping the rope 6 l to the support roller 23, guides for it will be the branches of the retaining rope 5 coming from blocks 21 and 22, and the guides J standings (Figures 6 - 8). .

After unloading, the bucket with the help of the I-turn of the turntable and the channels of the lifting 4 and the traction 3 returns to the bottom.

18

i 5

30J3

re

a

a

iS

j3us.6

FIG. eight

fieE

cpu & w

go

 / /// / // // 7

ten

// G // P / G7 /////

(riz. 13

cpus.i

ffue. 15

figb

physical 17

41

J8 j9

FIG. 18

(rig 13

DX D

43

From traysfo / mapyu {roTg

and auanefaria / gnae |

AND

ffm mflafffefopA

 MomofltyTs

I From fpancft yi

sh

 - and 1. .V I

t j atoms / y & T4

41 | --one..

M

C / J

Gr1

-H

 jr a fl

r-iivJ

xr, gffgy

- "rvWigy- W

iv seam / i

COIL,

Well

ZMUD

iOjHf

5iw transfarma-that / zaGu I

77 ftrpa fcfapmama-

fTTOflCf GB

Compiled by I.Sinitska Editor N.Slobod nickname Techred L. Oleinik Proofreader L.Pilipenko;

Order 4886/22, Draw 641, Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

FIG. 20

Claims (1)

EXCAVATOR-DRAGLINE WORKING EQUIPMENT, including an arrow with head blocks, a bucket with a rear wall, an arch and a harness, containing traction and lifting chains articulated with bucket pivots, and traction and lifting and holding winches with ropes, characterized in that, in order to increase performance and improve unloading under the boom, it is equipped with an additional tipping winch, and its rope is parallel to the traction ropes and connected to the rear wall of the bucket, which has an additional arch with a block placed with the possibility of circling the block with a rope of an additional tipping winch, the fs are located on the bucket from its center of gravity to the part. at the same time, the axle is offset by the anterior 1 ι: