RU2428255C1 - Crusher for sponge titanium blocks - Google Patents

Abstract

FIELD: process engineering. ^ SUBSTANCE: invention relates to crushers of sponge titanium or zirconium blocks. Proposed crusher comprises cutting chamber with drive and driven shafts with toothed disks fitted thereon and provided with hubs and gears on their extensions, and passage slot for crushed material, as well as loading and discharging device, and drive. Crusher incorporates two-section drive. Toothed disks are integrated into detachable packages for coarse, medium or fine crushing. Drive and driven shafts have splined to receive said replaceable packages. Toothed disks feature tooth triangular shape and V-like cross section for coarse crushing, triangular shape and rectangular cross section for medium and fine crushing. Aforesaid passage is formed by central slot and slot branches between outer and lateral surfaces of adjoining replaceable toothed disk and outer surfaces of disk hubs. Total cross section of passage is selected from relationship: Q =n (S ù W) + U B, where n is number of slot branches, S is slot branch width, W is slot branch height, U is width of central slot, B is length of central slot. ^ EFFECT: higher crushing efficiency. ^ 8 cl, 12 dwg

Description

The invention relates to equipment intended for the processing of titanium sponge blocks, and can be used in technological lines of titanium-magnesium plants, mining, non-metallic and construction industries, as well as sponge zirconium processing enterprises.

Known crusher for grinding titanium sponge, Japanese patent No. 2000061334, class. B02C 4/08, claimed 08/25/98, publ. 02/29/2000, containing a crushing chamber with two rolls rotating towards each other, on the outer surface of which longitudinal teeth are made, and a passage slot between the rollers, a loading device, a device for weighing both newly arrived and already crushed titanium sponges, sorting, transmission device and drive. In this design, the material is crushed by the longitudinal teeth of the rolls at high revolutions of their rotation. To grind the titanium sponge on the crusher in question, the required weighted amount of the titanium sponge (newly arrived or already crushed) is sent to the processing zone between two rotating rolls with a through slot, where it is processed. After processing, the crushed titanium sponge enters the sorting device, where it is sorted into fractions. Finished material that has been sorted is removed, but not passed - sent for re-grinding. This process is repeated until the desired fraction of the material is obtained.

Known crusher for grinding sponge titanium allows you to crush and sort sponge titanium into fractions, however, the required size of the fraction from large to small here is obtained by repeatedly passing the same portion of material through the rolls of the crusher. This process reduces the performance of the crusher.

In addition, press crushing of the material with longitudinal teeth at high roll speeds causes significant compression forces in the structure of sponge titanium: compression and tension of the material, which contribute to efficient crushing of the material only into a small fraction, but do not allow high-quality crushing of material from a large fraction to medium and medium fractions per fine fraction. This reduces the efficiency of the process of crushing sponge titanium to obtain the desired fraction.

At the same time, high shaft rotation speeds do not provide a safe processing environment for sponge titanium blocks in the crusher cutting chamber. The cutting process takes place in an inert atmosphere, for example in an argon atmosphere, and this requires the use of special fire safety equipment in the rooms where the crushers are installed, and ensuring reliable sealing of the cutting chamber of the crusher.

Also known crusher for grinding titanium sponge, and.with. USSR No. 585867, cl. B02C 7/10, claimed 05/19/75, publ. 12/30/1977, containing a chamber with parallel shafts placed in it, on which crushing disks of a certain size are mounted, and a passage slot for moving the processed material, a loading and unloading device and a drive. The crusher drive includes motors whose shafts are connected to shafts carrying crushing disks through gearboxes, pinion shafts and gear wheels. With this design of the drive, the distance between the shafts with the crushing disks is fixed.

The main drawback of the design of this crusher is that it is possible to grind sponge titanium only into fractions of a certain size and it is impossible to obtain fractions of a material of various sizes. This is due, firstly, to the fact that the distance between the shafts with the crushing disks is fixed, and, secondly, the crushing disks mounted on the shafts have a certain, constant size. As a result, the size of the passage gap for moving the processed material is always the same.

Of the known crushers for cutting titanium sponge, the closest in technical essence is the crusher described in the patent of Ukraine No. 1906, class. B02C 1/00, declared October 28, 2002, publ. July 15, 2003. This crusher contains a cutting chamber with parallel driving and driven shafts, on which gear discs with hubs and gears on their shanks are mounted, and a through slot for moving the processed material, a loading and unloading device and a drive. In addition, on the hubs of the gear discs, in the gaps between them with the possibility of removal are installed compensation rings, the outer diameter of which is less than or equal to the diameter of the hollows of the tooth discs. In this design of the crusher, the size of the fraction of crushed spongy titanium is determined by the passage gap formed by the lateral surface of the teeth of the disks, the outer surface of the teeth of the opposing disks, and the outer diameter of the compensation rings.

The main disadvantage of the design considered above is its low technological capabilities, due to the fact that due to the unchanging size of the passage gap during the operation of the crusher, it is impossible to obtain fractions of material of various fineness.

The objective of the present invention is to expand the technological capabilities of the crusher by cutting titanium sponge blocks on it into large, or medium, or small fractions, increasing the efficiency of the material cutting process and its performance.

The task is achieved by the fact that in the crusher for cutting blocks of sponge titanium, containing a cutting chamber with parallel to the leading and driven shafts with gear discs mounted on them with hubs and gears on their shanks, and a feed slot for moving the processed material, loading and the unloading device and the drive, according to the invention, the drive is made in two sections, the gear discs are combined into interchangeable bags for large, or medium, or small cutting of the processed material , the drive and driven shafts are made with slots for removable packages of gear discs and gears, which are also removable, and the gear discs have a triangular tooth shape and a wedge-shaped transverse profile for large cutting, a triangular tooth shape and a rectangular transverse profile for medium and small cutting, and the passage slot for moving the processed material is formed by a central longitudinal slot and slotted branches between the outer and side surfaces of adjacent gear discs and the outer surfaces disc hubs, while the total cross section of the passage gap is selected from the relation: Q = n (S × W) + U · B, where n is the number of slot branches, S is the width of the slot branch, W is the height of the slot branch, U is the width of the central longitudinal slit, B is the length of the central longitudinal slit, in addition, each pair of gears on the shafts is placed with the possibility of reinstallation and has the same or different number of teeth on the gears within the center distance of the gearing. The gear discs of the replaceable packages of the drive shaft have a larger diameter and more teeth than the gear discs of the replaceable packages of the drive shaft. Toothed disks of a replaceable coarse cutting package on the drive and driven shafts are made with double-sided hubs. Toothed disks of the drive shaft of a medium-size interchangeable package are made with double-sided hubs, and toothed disks of the driven shaft are made with double-sided and one-sided hubs, while a toothed disk with a double-sided hub is located on the driven shaft in the center of the interchangeable package, and toothed disks with one-way hubs are located on both sides of this drive and facing their hubs to the center of the removable package. Toothed disks of a removable package of small cutting on the drive and driven shafts are made with one-sided hubs and placed with their hubs on the drive shaft towards the rear of the shaft, and on the driven shaft in the opposite direction. Slotted branches of the central longitudinal slit are located opposite the gear discs in each replaceable package of large, or medium, or small cutting. In addition, the first section of the crusher drive contains a motor and an input gearbox with input and output couplings, the second section contains an output gearbox and an output clutch, and the total gear ratio of the drive has two unequal parts, a larger value is on the input gearbox of the first section and a smaller value is the output gearbox of the second section, with both gearboxes output shafts are located on one side of the gearbox, and the gearboxes themselves with their output shafts are installed in the drive towards each other. The motor and the input gear, the output gear and the cutting chamber of the crusher are mounted on individual support frames and are kinematically connected to each other by means of couplings.

The proposed design of the crusher for cutting blocks of sponge titanium allows you to expand its technological capabilities during operation by cutting blocks of sponge titanium into large, or medium, or small fractions, to increase the efficiency of the process of cutting the material and the productivity of its work.

Expansion of technological capabilities of the crusher and increase of cutting efficiency of the material is achieved by combining gear discs with hubs in interchangeable packages with different numbers of discs, with different cross-sectional profiles of the discs, with different overall dimensions of the discs and different numbers on the tooth discs, making gear discs with one-sided and double-sided hubs, and due to the formation of individual passage slots formed by these gear discs and their hubs in each sizes known to each other with a common total cross-section for each interchangeable bag. All this allows you to effectively cut the processed material into gears, or medium, or small fractions with gear discs.

In addition, the cutting efficiency of the material is facilitated by the possibility of changing the magnitude of the cutting forces on the teeth of the disks in interchangeable packages by adjusting the rotational speeds of the drive and driven shafts, which is carried out by installing interchangeable gears on their shanks with the possibility of resetting each pair of gears with the same or different number of teeth .

In practice, the process of cutting material in the proposed crusher takes place at low revolutions of rotation of the drive and driven shafts with significant torques that create corresponding significant efforts to cut the material on the gear discs, and they effectively act on the material, destroying its structure.

In addition, cutting blocks of sponge titanium at low shaft speeds provides a safe environment for its processing in the cutting chamber of the crusher, since the cutting process takes place in a normal atmosphere.

Different linear speeds of rotation of the teeth of the disks due to their location on different diameters of the disks (D> D ₁ ) create different cutting forces in each pair of disks. These forces cause, in addition to compression stresses, additional shear stresses in the structure of the material, which contribute to a more efficient cutting of the material.

The increase in crusher productivity is achieved by changing the cutting forces of the material on the gear disks of the replaceable packages and when the material is cut with the same or different fractions. This is achieved due to the possibility of quick replacement of interchangeable packages of gear discs on the drive and driven shafts and pairs of gears on the shanks of these shafts.

The shape and area of passage slots with branches in replaceable bags also contribute to the crusher productivity increase, into which the processed material gets after unhindered and directed from the gear disks after cutting.

In addition, the breakdown of the total gear ratio of the drive into two unequal parts with a larger value on the input gear in the first section of the drive and a smaller value on the output gear of the second section of the drive contributes to an increase in the crusher’s performance. Such a breakdown of the gear ratio makes it possible to obtain the required torque in the crusher drive and, accordingly, the required efforts for cutting sponge titanium blocks with removable gear toothed disks and contributes to its stable performance, since gears with low mass rotate at high speeds and gears with a large mass rotate at low speeds. With this operation of the gearboxes, dynamic loads in the drive are significantly reduced and the durability of its main components: gears, gears, bearing assemblies and sealing elements increases.

The crusher drive itself is compact and has small dimensions, since both gearboxes in its sections are mounted towards each other with their output shafts, while the output shafts of the gearboxes are located on one side of the gearbox. Placing the motor, drive reducers, and crusher cutting chambers on individual support frames makes it possible to mount the drive in processing lines for processing titanium sponge blocks both to the left and to the right of the cutting chamber, which ensures the universal use of the crusher in technological lines.

To explain the invention, a specific embodiment of the invention is provided below with reference to the accompanying drawings, in which:

figure 1 shows a General view of the crusher in plan,

figure 2 is a view along arrow A, the cutting chamber of the crusher,

figure 3 - place 1 in figure 1, a removable package of gear discs for cutting material into a large fraction,

figure 4 is a view along arrow B in figure 3,

figure 5 - place II in figure 1, a removable package of gear discs for cutting material into a middle fraction,

figure 6 is a view along arrow B ₁ in figure 5,

in Fig.7 - place III in Fig.1, a removable package of gear discs for cutting material into a small fraction,

Fig.8 is a view along arrow B ₂ in Fig.7,

figure 9 - contours of the passage gap between the gear disks in the cutting chamber of the crusher,

figure 10 is a diagram of the forces applied to the material when it is cutting with gear discs, a diagram of the stresses that occur in the material when cutting it,

figure 11 is a diagram of the installation of the crusher in the production line with the left drive arrangement,

on Fig - the same, with the right location of the drive.

The crusher for cutting sponge titanium contains a cutting chamber 1, parallel to it, driving 2 and driven 3 shafts, on which replaceable packages 4, 5, 6 of gear discs with hubs for large, or medium, or small cutting, respectively, and removable gears 7, are mounted 8, 9, loading 10 and unloading 11 devices in the form of funnels and a drive.

On the leading 2 and driven 3 shafts, slots 13 are made for interchangeable packages of 4, 5, 6 gear disks, and on the shanks of the shafts are slots 14 for interchangeable gears 7, 8, 9 with the same or different number of teeth in pairs of gears 7-7, 8 -9, 9-8.

Replaceable packages of 4, 5, 6 gear discs mounted on the leading 2 and driven 3 shafts for large, medium and small cutting have the following composition and design:

- for large cutting, package 4 contains gear discs with large teeth of a triangular shape and a wedge-shaped transverse profile and double-sided hubs, while on the drive shaft 2 there are four gear discs 15, and on the driven shaft 3 there are three gear discs 16, which are fixed from axial displacement on the driven shaft rings 17,

- for medium cutting, the package 5 contains gear discs with middle teeth of a triangular shape and a rectangular transverse profile with two-sided and one-sided hubs, while on the drive shaft 2 there are four discs 18 with double-sided hubs, and on the driven shaft 3 one disc 19 with a double-sided hub is placed in the center of the interchangeable package 5, and the gear disks 20 with one-sided hubs are placed on both sides of the gear disc 19 and face their hubs to the center of the interchangeable package,

- for small cutting, package 6 contains gear discs with small teeth of a triangular shape and a rectangular transverse profile with one-sided hubs, while on the drive shaft 2 there are 5 gear discs 21, with their hubs facing the tail end of the shaft, and on the driven shaft 3 there are 5 gear discs 22, their hubs facing in the opposite direction.

The gear disks of the drive and driven shafts of the interchangeable packages 4, 5, 6 are fixed from axial displacement by the clamps 23, while the gear disks located on the drive shaft 2 have the same diameter D, and all the gear disks located on the driven shaft 3 have the same diameter D ₁ , with D> D ₁ in each interchangeable gear pack.

The width of the hubs of the gear discs in interchangeable bags 4, 5, 6 for large cutting is C, medium cutting is C ₁ , C ₂ and for small cutting is C ₃ , while C> C ₁ > C ₂ > C ₃ . The width of the hubs determines the number of gear disks on the shafts 2, 3 and their relative position on the same shaft and between the shafts within the width of the loading funnel 10 and the discharge funnel 11. The diameter of the hubs of the gear disks in the interchangeable package 4 of large cutting is equal to d, in the interchangeable package 5 of the average cutting - d ₁ and in a removable package 6 of small cutting - d ₂ , with d> d ₁ > d ₂ .

The thickness of the disks with a wedge-shaped or rectangular transverse profile of the teeth in replaceable packages 4, 5, 6 of large, or medium, or small cutting is respectively t, t ₁ , t ₂ , with t> t ₁ > t ₂ .

The teeth of the wedge-shaped or rectangular transverse profile of the disks in interchangeable packages 4, 5, 6 differ among themselves by the number of teeth z, tooth height h and tooth pitch b. The number of teeth of the disks placed on the drive 2 and driven 3 shafts in the replaceable package 4 for large cutting is respectively z, z ₁ , in the replaceable package 5 for medium cutting - respectively z ₂ , z ₃ and in the replaceable package 6 for small cutting - respectively z ₄ , z ₅ , with z> z ₁ , z ₂ > z ₃ , z ₄ > z ₅ . The height of the teeth in interchangeable packages 4, 5, 6 of large, or medium, or small cutting is equal to h, h ₁ , h ₂ , respectively, while h> h ₁ > h ₂ . The tooth pitch in interchangeable packages 4, 5, 6 of large, or medium, or small cutting is respectively b, b ₁ , b ₂ , with b> b ₁ > b ₂ .

The parameters of the gear discs determine the size of the passage gap for moving the processed material into it.

The passage slot in each interchangeable package 4, 5, 6 is formed by a central longitudinal slot 24 between the toothed disks of the driving 2 and the driven 3 shafts located opposite each other and the slotted branches 25 between the outer and lateral surfaces of the adjacent gear discs and the outer surfaces of the disc hubs. In this case, the slit branches 25 are located perpendicular to the central longitudinal slit 24 opposite the gear discs in each replaceable package of large, or medium, or small cutting.

The total cross section of the passage gap for each of the replaceable packages of 4, 5, 6 gear discs is determined by the ratios:

Q = n (S × W) + U · B, Q ₁ = n ₁ (S ₁ × W ₁ ) + U ₁ · B ₁ , Q ₂ = n ₂ (S ₂ × W ₂ ) + U ₂ · B ₂ ,

Where

- Q, Q ₁ , Q ₂ - the total cross section of the passage gap in each replaceable package,

- n, n ₁ , n ₂ - the number of slotted branches in each replaceable package,

- S, S ₁ S ₂ - the width of the slotted branches in each replaceable package,

- W, W ₁ , W ₂ - the height of the slotted branches in each replaceable package,

- U, U ₁ , U ₂ - the width of the Central longitudinal slit in each replaceable package,

- B, B ₁ , B ₂ - the length of the central longitudinal gap in each replaceable package.

Since the dimensions of the width S and the height W of the slotted branches of the passage gap are different in size: S> S ₁ > S ₂ and W> W ₁ > W ₂ , then the sizes of the total cross sections Q, Q ₁ , Q _{2 of the} passage slits of the exchangeable bags 4, 5 , 6 are different, with Q> Q ₁ > Q ₂ . The total cross section of the passage slots between the gear discs in the replaceable packages of large, medium and small cutting is reduced, as a result of which it becomes possible to obtain smaller fractions by size of sponge titanium when cutting blocks.

Installing on the splined shanks of the driving 2 and driven 3 shafts of interchangeable gears 7, 8, 9 with the same or different number of teeth in options 7-7, 8-9, 9-8 provides for the adjustment of the shaft speeds with equal or different speed numbers. When installing a pair of gears 7-7, drive 2 and driven 3 shafts rotate identically, when installing a pair of gears 8-9, drive shaft 2 rotates faster than driven shaft 3, when installing a pair of gears 9-8, drive shaft 2 rotates slower than driven shaft 3.

Such a resetting of interchangeable gears is carried out to change the cutting force of the material, for example, to cut sponge titanium blocks of different hardness or to obtain fractions of the material by size of one size or different sizes.

Under identical speeds lead 2 and the driven shafts 3 of drive teeth appended to the material of equal magnitude cutting forces P and P ₁ in the structure of the material having only compressive stress G _{compression channel.} At different revolutions of the driving 2 and driven 3 shafts due to different linear speeds of rotation of the teeth of the disks, since the diameter of the disks is different D> D ₁ , and, accordingly, different in magnitude of the cutting forces P and P ₁ , internal deformation processes arise in the structure of sponge titanium (shift components of this structure) with additional shear stresses arising in it J _sd . These stresses contribute to a more efficient destruction of the structure of sponge titanium blocks when it is cut with gear discs.

The crusher drive is made of two sections. The first section of the drive contains a motor 26, an input gearbox 27 with an input 28 and an output 29 couplings, and a second section an output gearbox 30 with an output coupling 31 connecting this gearbox to the drive shaft 2 of the cutting chamber 1. In this case, the output shafts of gearboxes 27 and 30 are located on one of their sides, and the gearboxes themselves are installed towards each other with their output shafts. The engine 26 and the input gearbox 27, the output gearbox 30, the crusher cutting chamber 1 are mounted on individual support frames 32, 33, 34, respectively. The leading 2 and driven 3 shafts are mounted on the frame 34 on the thrust bearings 35.

The two-section drive of the crusher in technological lines for cutting titanium sponge can have a left-handed 36 or right-handed 37 execution relative to the cutting chamber 1.

Crusher for cutting titanium sponge works as follows.

The crusher cutting chamber 1 is pre-adjusted to the desired fraction before the work of the processing line. For this, one of the interchangeable packages 4, 5, 6 with toothed disks 15, 16 for large, or toothed disks 18, 19, 20 for medium, or toothed disks 21, 22 for small cutting is installed on the splines 13 of the shafts 2 and 3. At the same time, rings 17 are used to center the gear disks 16 located on the driven shaft 16 for large cutting of the interchangeable package 4, and clamps 23 are used to fix the gear disks located on the drive and driven shafts of all interchangeable packages 4, 5, 6.

In addition, pairs of gears with the desired number of teeth are installed on the splines 14 of the shanks of the shafts 2 and 3 in the variants of the pairs of gears 7-7, or 8-9, or 9-8 to provide the necessary adjustment of the shaft speed of the interchangeable packages.

The crusher is ready to receive sponge titanium for cutting it.

Turn on the crusher drive motor 26. The rotation of the motor shaft through the input clutch 28 is transmitted to the input gearbox 27, then through its output shaft to the output clutch 29 and the input shaft of the gearbox 30, from the output shaft of the gearbox 30 to the output clutch 31 and to the drive shaft 2 of the cutting chamber 1. The drive shaft 2 through one of the pairs of gears 7-7, 8-9, or 9-8 rotates the driven shaft 3. The drive shaft 2 and the driven shaft 3 rotate in the bearings 35 mounted on the frame 34.

Sponge titanium blocks by a feeder or conveyor of the processing line are fed into the feed funnel 10 of the cutting chamber 1, through which it enters the processing zone with gear discs of replaceable bags. The material is processed here and then through the passage slot formed by the central longitudinal slot 24 and slotted branches 25, it is transferred to the discharge funnel 11, from where it enters the receiving feeder or belt conveyor of the technological line installed under the crusher and is transported further to other technological equipment of the line.

The proposed crusher for cutting sponge titanium into large, medium or fine fractions has a capacity of from 3.0 to 7.0 t / h.

With large cutting, the crusher can cut sponge titanium blocks 300 × 300 mm in size at the inlet to a particle size of 150 × 150 mm at the output, that is, the size of the input fraction after cutting is reduced by 50%.

With average cutting, the crusher can cut sponge titanium blocks with sizes from 150 to 180 mm at the inlet to a fineness of 70 × 70 mm at the outlet, that is, the sizes of the input fraction after cutting are reduced by 60%.

With fine cutting, the crusher can cut sponge titanium blocks with a size of 70 × 70 mm at the inlet to a grain size fraction of 25 × 25 mm at the outlet, that is, the sizes of the input fraction after cutting are reduced by 65%.

The crusher has a high-torque drive from 380 to 510 kN • m with a large total gear ratio of the drive up to 1229. The crusher shafts rotate at low speeds from 0.8 to 1.208 rpm. With such revolutions of the shafts, the teeth of the disks create large cutting forces ranging from 300 to 400 tf for cutting sponge titanium blocks.

The crusher can also be used in technological lines for cutting sponge zirconium blocks.

The design of the crusher proposed in the invention in comparison with the known crushers can significantly expand its technological capabilities for cutting sponge titanium blocks into large, or medium, or small fractions. It also makes it possible to increase the cutting efficiency of the material due to the use of directly toothed disks of a wedge-shaped and rectangular transverse profile in replaceable crusher bags, to provide the possibility of carrying out the process of cutting the material with large cutting forces at low revolutions of the rotation of the gear disks, and to increase the performance of the crusher.

Claims (8)

1. Crusher for cutting blocks of sponge titanium, containing a cutting chamber with parallel mounted drive and driven shafts with gear discs mounted on them with hubs and gears on their shanks, and a feed slot for moving the processed material, loading and unloading devices and drive, characterized in that the drive is made of two sections, the gear disks are combined into interchangeable bags for large, or medium, or small cutting of the processed material, the drive and driven shafts are made from they are for removable packages of gear disks and gears, which are also made replaceable, moreover, the gear disks have a triangular tooth shape and a wedge-shaped transverse profile for large cutting, a triangular tooth shape and a rectangular transverse profile for medium and small cutting, and a passage gap for moving the processed material is formed the central longitudinal slit and slotted branches between the outer and side surfaces of adjacent gear discs and the outer surfaces of the disc hubs, with the total cross section the passage gap is selected from the relation: Q = n (S × W) + U · B, where n is the number of slot branches, S is the width of the slot branch, W is the height of the slot branch, U is the width of the central longitudinal slot, B is the length of the central longitudinal slots, in addition, each pair of gears on the shafts is placed with the possibility of reinstallation and has the same or different number of teeth on the gears within the center distance of the gearing. 2. The crusher according to claim 1, characterized in that the gear disks of the interchangeable packages of the drive shaft have a larger diameter and more teeth than the gear disks of the interchangeable packages mounted on the driven shaft. 3. Crusher according to claim 1, characterized in that the gear discs of the interchangeable coarse cutting package on the drive and driven shafts are made with double-sided hubs. 4. The crusher according to claim 1, characterized in that the gear disks of the drive shaft of the interchangeable medium-cut package are made with double-sided hubs, and the gear disks of the driven shaft are made with double-sided and single-sided hubs, while the gear disk with the double-sided hub is centrally located on the driven shaft interchangeable package, and gear discs with one-sided hubs are placed on both sides of this disc and face their hubs to the center of the interchangeable package. 5. The crusher according to claim 1, characterized in that the gear disks of the removable package of small cutting on the drive and driven shafts are made with one-sided hubs and placed with their hubs on the drive shaft towards the tail end of the shaft, and on the driven shaft in the opposite direction. 6. The crusher according to claim 1, characterized in that the slotted branches of the central longitudinal slit are located opposite the gear discs in each replaceable package of large, or medium, or small cutting. 7. The crusher according to claim 1, characterized in that the first section of the crusher drive contains an engine and an input gear with input and output couplings, the second section contains an output gear and an output clutch, and the total gear ratio of the drive has two unequal parts, a large amount of the input gearbox of the first section and a smaller value on the output gearbox of the second section, while both gearboxes have output shafts located on one side of the gearbox, and the gearboxes themselves are installed in the drive towards each other with their output shafts. 8. The crusher according to claim 1, characterized in that the engine and the input gear, the output gear and the cutting chamber of the crusher are mounted on individual support frames and are kinematically connected to each other by means of couplings.

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