Device for cutting hard objects

Abstract

This utility model pertains to construction and structural engineering, specifically to devices for cutting solid objects, and can be used in the production, processing, reconstruction, dismantling, and cutting to size of reinforced concrete products and building structures. The device for cutting solid objects comprises a rail, a carriage mounted for movement along the rail, a carriage drive, a sleeve, a sleeve rotation drive, a saw blade, and a saw blade rotation drive. The carriage is equipped with a coaxial shaft assembly, including an inner shaft and an outer hollow shaft. The shafts are mounted for independent rotation. The sleeve is equipped with a flexible transmission, including a driving element and a driven element. The inner shaft is kinematically connected to the saw blade rotation drive, and the outer hollow shaft is connected to the sleeve rotation drive and the sleeve.The technical result is an increase in the compactness of the drive section of the device, ensuring independent actuation of the saw blade, sleeve, and carriage movement mechanism. 12 references, 3 figs.

Description

[0001] Technical field

[0002] The utility model relates to the field of construction and construction engineering, namely to devices for cutting solid objects, and can be used in the production, processing, reconstruction, dismantling and adjustment to size of reinforced concrete products and building structures.

[0003] Technology Level

[0004] A saw for construction cutting work is known, disclosed in patent US 8789521 B2 (IPC: B28D1 / 04, publication date: 07 / 29 / 2014). The known device comprises a rail with a toothed rack and a carriage mounted so as to be able to move along said rack with a rotary lever and a saw blade. The carriage includes a drive for rotating the saw blade and may include a separate drive for moving along the rack, as well as a separate drive for rotating the rotary lever, on the free end of which the saw blade is mounted. The rotary lever contains a transmission for transmitting rotation from the drive motor to the saw blade. The transmission includes a first gear mounted on the shaft of the drive motor, and a second gear secured to the output shaft of the saw blade. The second gear may be connected to the first gear by a chain or one or more intermediate gears.The transmission also includes a gear assembly, in which one gear is integral with a coaxial shaft, while the other gear is mounted on said shaft and can rotate relative to it. Torque is transmitted between the gears via a friction clutch, limiting the transmitted load.

[0005] A device for cutting concrete is known, disclosed in patent US 9174360 B2 (IPC: B28D1 / 08, B27B17 / 00, B27B17 / 08, publication date: 03.11.2015). The known device comprises a rail with a toothed rack and a carriage including a drive unit, a rotary lever, and a drive for rotating a saw blade. Moreover, the device can include a drive for rotating the rotary lever. In this case, the carriage is mounted on the rail by means of upper and lower rollers, and the movement of the carriage is ensured by the engagement of a feed gear with the said toothed rack. A saw blade is mounted on the rotary lever, fixed on the drive shaft of the saw blade by means of a flange assembly. The rotary lever comprises a gearbox including an input part, an intermediate gear and an output gear configured to transmit rotation to the drive shaft of the saw blade.Instead of a saw blade, a chain cutting unit can be installed on the output shaft, containing a transmission unit for transmitting rotation from the drive shaft to the drive sprocket of the cutting chain. Examples of such loop transmission elements include a toothed belt and a V-belt.

[0006] A drawback of known devices is the limited compactness of the carriage drive section, due to the use of separate kinematic chains to transmit rotation to the saw blade and rotation to the sleeve. This design requires the carriage drive section to contain multiple transmission elements, shafts, gears, and support assemblies, which complicates the device's layout and limits the potential for downsizing.

[0007] A flying saw for cutting moving rolled metal is known, disclosed in patent RU 2240898 C1 (IPC B23D 21 / 00, B23D 25 / 02, publication date: 10.01.2005) - prototype. The known device comprises a base with horizontal guides and a carriage with rollers and a rack and pinion drive. The carriage is equipped with a clamping mechanism and a cutting mechanism, an electric motor for rotating the saw blade, and a hydraulic cylinder. The rack and pinion drive of the carriage is located on the platform of the base cabinet, while the carriage moves along the horizontal guides of the base by means of rollers. The hydraulic cylinder feeds the circular saw to the cutting zone by moving the housing with the circular saw down along the vertical guides of the carriage. In this case, the cutting mechanism contains a spindle on rolling bearings, one end of which is connected to an electric motor for rotating the circular saw, and the other end is connected to the circular saw.

[0008] The disadvantage of this device is the increased complexity and size of the saw blade adjustment unit, due to the use of a separate vertical movement mechanism on stands with a hydraulic cylinder. The shaft system of the device is used only to transmit rotation to the saw blade and does not provide motion for changing the position of the cutting unit.

[0009] The above predetermines the technical problem, which is the need to create a device for cutting hard objects, which has a more compact arrangement of the drive part, ensuring independent actuation of the saw blade, sleeve and carriage movement mechanism.

[0010] Disclosure of the essence of the utility model

[0011] The technical result of the utility model, achieved by using the claimed device, consists in increasing the compactness of the arrangement of the drive part of the device while ensuring independent actuation of the saw blade, sleeve and carriage movement mechanism.

[0012] A device for cutting solid objects is claimed as a utility model, comprising a rail, a carriage mounted so as to be able to move along the rail, a carriage movement drive connected to the carriage, a sleeve, a sleeve rotation drive, a saw blade, and a saw blade rotation drive. Unlike the prototype, the carriage is provided with a coaxial shaft assembly, including an internal shaft and an external hollow shaft enclosing the internal shaft, the sleeve is provided with a flexible transmission located therein, including a driving element, which is kinematically connected to the internal shaft, and a driven element, which is kinematically connected to the mounting shaft of the saw blade, wherein the internal shaft is kinematically connected to the rotation drive of the saw blade, and the external hollow shaft is kinematically connected to the sleeve rotation drive and to the sleeve, wherein the internal shaft and the external hollow shaft are mounted so as to be able to rotate independently.

[0013] The claimed device for cutting solid objects can be implemented using the following particular embodiments of its implementation.

[0014] In particular, the inner shaft can be made solid.

[0015] In particular, the outer hollow shaft can be mounted on bearings relative to the inner shaft.

[0016] In particular, the bearings can be placed between the inner surface of the outer hollow shaft and the outer surface of the inner shaft.

[0017] In particular, the outer hollow shaft may be provided with a sleeve rotation gear kinematically connected to the sleeve rotation drive.

[0018] In particular, the outer hollow shaft can be connected to the sleeve by means of a flange connection.

[0019] In particular, flexible transmission can be made by belt, toothed belt or chain.

[0020] In particular, the driving element of the flexible transmission can be installed on the inner shaft of the coaxial shaft unit.

[0021] In particular, the driven element of the flexible transmission can be installed on the mounting shaft of the saw blade.

[0022] In particular, the saw blade seat shaft can be installed in the sleeve on bearings.

[0023] In particular, the saw blade rotation drive can be connected to the inner shaft of the coaxial shaft unit via a coupling.

[0024] In particular, the carriage movement drive can be kinematically connected to a driving movement gear configured to engage with a rail rack.

[0025] In particular, the carriage may be provided with support rollers mounted so as to be able to interact with the rail.

[0026] The carriage is equipped with a coaxial shaft assembly, comprising an inner shaft and an outer hollow shaft enclosing the inner shaft. This allows for the placement of two shafts, designed to transmit torque to different actuators, within a single shaft assembly. This design allows for the use of a single axial area of ​​the carriage to accommodate two torque transmission channels, reducing the number of spaced drive elements and contributing to a more compact drive arrangement.

[0027] The sleeve is equipped with a flexible transmission system, including a drive element kinematically connected to the inner shaft and a driven element kinematically connected to the saw blade mount. This transmission system ensures torque transmission from the inner shaft to the saw blade mount through the sleeve's interior. This allows the drive connection to the saw blade to be located within the sleeve, facilitating a compact layout.

[0028] The kinematic connection between the inner shaft and the saw blade drive ensures that torque is supplied from the drive to the inner shaft, which forms a separate torque transmission channel to the saw blade. As a result, the saw blade rotates through the inner shaft and the associated flexible transmission, allowing for the transmission of torque to the saw blade to be separated from that to the sleeve.

[0029] The kinematic connection between the outer hollow shaft, the sleeve rotation drive, and the sleeve ensures the transfer of torque from the sleeve rotation drive to the outer hollow shaft and then to the sleeve. This connection allows the outer hollow shaft to form an independent torque transmission channel for sleeve rotation. This channel is located coaxially with the inner shaft, allowing for a compact drive arrangement.

[0030] The independent rotation of the inner shaft and outer hollow shaft ensures separate torque transmission through two coaxially located channels: through the inner shaft to the saw blade, and through the outer hollow shaft to the sleeve. This allows the saw blade to rotate independently and the sleeve to rotate independently when the corresponding torque transmission channels are located in a single coaxial shaft assembly. This allows for a more compact drive unit while maintaining independent torque transmission to the saw blade and sleeve.

[0031] The prior art does not contain any technical solutions that contain a set of essential features characterizing the claimed utility model, which indicates its novelty.

[0032] The utility model was created in accordance with the laws of nature and knowledge of modern science about them, which indicates industrial applicability.

[0033] Brief description of drawings

[0034] The description of this utility model is presented with reference to the following figures:

[0035] Fig. 1 shows a general view of a device for cutting solid objects;

[0036] Fig. 2 shows a view of the device for cutting solid objects with the side wall of the carriage removed;

[0037] Fig. 3 shows a view of the device for cutting solid objects with an open sleeve.

[0038] The following symbols are used on the figures:

[0039] 1 - rail;

[0040] 2 - rack;

[0041] 3 - guides;

[0042] 4 - carriage;

[0043] 5 - top wall;

[0044] 6 - front and rear walls;

[0045] 7 - side walls;

[0046] 8 - carriage movement drive;

[0047] 9 - sleeve;

[0048] 10 - sleeve rotation drive;

[0049] 11 - saw blade;

[0050] 12 - saw blade mounting unit;

[0051] 13 - saw blade rotation drive;

[0052] 14 - support platform for the saw blade rotation drive;

[0053] 15 - inner shaft;

[0054] 16 - external hollow shaft;

[0055] 17 - sleeve rotation gear;

[0056] 18 - flange connection;

[0057] 19 - carriage movement shaft;

[0058] 20 - leading gear of movement;

[0059] 21 - support rollers;

[0060] 22 - coupling;

[0061] 23 - driven element of flexible transmission;

[0062] 24 - leading element of flexible transmission;

[0063] 25 - saw blade mounting shaft.

[0064] Implementation of a utility model

[0065] Fig. 1 shows a general view of a device for cutting solid objects. A solid object is defined as an object made of a material with increased hardness, rigidity, and / or strength that can be processed with a saw blade. Solid objects can be made of concrete, reinforced concrete, brick, stone, ceramics, metal, alloy, wood, polymer material, composite material, or combinations of these materials.

[0066] The device comprises a rail 1 on which a rack 2 and guides 3 are placed. A carriage 4 is mounted on rail 1 and can move along rail 1. Guides 3 are located along rail 1 and are intended to stabilize the position of carriage 4 relative to rail 1 during its movement along rail 1. Rack 2 is located along rail 1 and is intended to move carriage 4 along rail 1 using a movement mechanism. For this purpose, rack 2 can be made toothed, pinned, perforated, screw-shaped, or of another shape that ensures the possibility of moving carriage 4 due to the interaction of rack 2 with the mating element of the movement mechanism located in carriage 4.

[0067] Carriage 4 comprises a top wall 5, front and rear walls 6, and side walls 7. These walls form parts of the carriage housing 4 and provide for the placement and fastening of the device components. Mounted on top wall 5 is a movement drive 8, connected to carriage 4 and configured to ensure movement of carriage 4 along rail 1.

[0068] The front and rear walls 6 of the carriage 4 may be provided with slots, cutouts, profiled sections, or other elements. These elements allow the carriage 4 to be positioned on the rail 1 and move along the guides 3.

[0069] The design of the carriage body 4 may include additional body elements, including a bottom wall, partitions and stiffening ribs, which provide increased rigidity of the carriage 4 and facilitate the placement of the device elements within the carriage 4.

[0070] The device comprises a sleeve 9 mounted on the side wall 7 of a carriage 4 with the ability to rotate relative to said carriage 4. The sleeve 9 can be made hollow with the ability to accommodate elements for transmitting torque to a saw blade 11 inside it.

[0071] On the upper wall 5 of the carriage 4, a rotation drive 10 is installed, designed with the possibility of ensuring the rotation of the sleeve 9 relative to the carriage 4.

[0072] Carriage 4 and sleeve 9 can be made of metal materials, alloys, composite materials or their combinations, ensuring the perception of weight, vibration and dynamic loads that arise during the operation of the device, while maintaining the compactness of the layout of the elements of the drive part of the device and the ability to move along the rack 2 and guides 3 along the rail 1.

[0073] The device also includes a saw blade 11, secured by a mounting unit 12 to the sleeve 9 so that it can rotate when cutting a solid object. Mounting unit 12 ensures that saw blade 11 is positioned and held in the working position. Mounting unit 12 can be flanged, clamped, or threaded.

[0074] Saw blade 11 may be configured to cut hard objects and may include a housing made of metal or alloy and a cutting edge located along the periphery of the housing. The cutting edge may be abrasive, carbide, or diamond-containing. In a particular embodiment, saw blade 11 may be a diamond saw blade comprising a metal housing and a diamond-containing cutting layer or diamond-containing cutting segments secured to the periphery of the housing.

[0075] The rotation drive 13 of the saw blade 11 is configured to ensure rotation of the saw blade 11.

[0076] The rotary drive 13 of the saw blade 11 can be removable or replaceable, depending on the characteristics of the solid object being processed, the required power, the operating mode of the device, the operating conditions, or the requirements for the rotation speed of the saw blade 11. This design allows for the use of various types of rotary drives 13 within the device, differing in power, weight, dimensions, and other parameters. Furthermore, the removable design of the rotary drive 13 allows for its replacement during maintenance, repair, upgrading, or in the event of a failure of the rotary drive 13 without the need to disassemble the carriage housing 4 or remove the components of the coaxial shaft assembly, simplifying device maintenance.

[0077] The rotation drive 13 of the saw blade 11 is placed on the support platform 14, which is connected to the side wall 7 of the carriage 4 using fastening elements. Bolts, screws, studs, rivets, welded joints and other fastening elements can be used as fastening elements, providing the possibility of fixing the support platform 14 relative to the side wall 7 of the carriage 4 in order to accommodate the rotation drive 13 of the saw blade 11 relative to the carriage 4 and to bear the weight load from the said drive 13. The support platform 14 can be made in the form of a plate, corner, bracket or other supporting structure, providing the placement of the rotation drive 13 of the saw blade 11 on the carriage 4.

[0078] The travel drive 8, the rotation drive 10 and the rotation drive 13 can be made with electric, hydraulic, pneumatic or other drives, ensuring the movement of the carriage 4 along the rail 1, the rotation of the sleeve 9 and the rotation of the saw blade 11, respectively.

[0079] In accordance with Fig. 2, a coaxial shaft assembly is placed in the carriage 4 of the device for cutting solid objects, comprising an internal shaft 15 and an external hollow shaft 16. The internal shaft 15 is located in the cavity of the external hollow shaft 16, wherein said shafts are placed coaxially.

[0080] The inner shaft 15 and the outer hollow shaft 16 are mounted so that they can rotate independently of each other. This allows the rotation of the inner shaft 15 to be transmitted to the saw blade 11 independently of the rotation of the outer hollow shaft 16, which is transmitted to the sleeve 9.

[0081] In one embodiment, the outer hollow shaft 16 can be mounted relative to the inner shaft 15 on bearings located between the inner surface of the outer hollow shaft 16 and the outer surface of the inner shaft 15. Independent rotation of these shafts allows for separate rotation of the saw blade 11 and rotation of the sleeve 9 when both torque transmission channels are located in one coaxial shaft unit of the carriage 4. This facilitates the compact design of the drive part of the device without combining the torque transmission channels to the saw blade 11 and to the sleeve 9.

[0082] The inner shaft 15 is kinematically connected to the rotation drive 13 of the saw blade 11 and is intended to receive the torque from the said drive 13 with the subsequent transmission of the torque in the direction of the saw blade 11. The said connection allows the use of the inner shaft 15 as a separate path for transmitting rotation to the saw blade 11, located in a common axial zone with the outer hollow shaft 16.

[0083] In one embodiment, the inner shaft 15 can be made solid, which increases its load-bearing capacity when transmitting torque to the saw blade 11 and makes it possible to maintain a limited transverse size of said shaft when it is placed in a coaxial shaft assembly.

[0084] The outer hollow shaft 16 forms a second rotation transmission channel designed to rotate the sleeve 9 relative to the carriage 4. This arrangement of the inner shaft 15 and the outer hollow shaft 16 ensures the location of the rotation transmission elements to the saw blade 11 and to the sleeve 9 in the common axial area of ​​the carriage 4, which helps to increase the compactness of the drive system layout.

[0085] In one embodiment, a rotation gear 17 of the sleeve 9 can be secured on the outer hollow shaft 16. Placing the rotation gear 17 on the outer hollow shaft 16, located within the carriage 4, makes it possible to reduce the occupied volume of the transmission elements of the rotation of the sleeve 9. The rotation gear 17 of the sleeve 9 is kinematically connected to the rotation drive 10 of the sleeve 9 for transmitting torque from the said drive 10 to the outer hollow shaft 16. The outer hollow shaft 16 is connected to the sleeve 9, due to which, when the outer hollow shaft 16 rotates, the rotation of the sleeve 9 relative to the carriage 4 is ensured.

[0086] In one embodiment, the outer hollow shaft 16 is connected to the sleeve 9 by means of a flange connection 18. The flange connection 18 ensures the transmission of rotation of the outer hollow shaft 16 to the sleeve 9, due to which the sleeve 9 rotates relative to the carriage 4 together with the outer hollow shaft 16. The connection of the outer hollow shaft 16 to the sleeve 9 by means of the flange connection 18 ensures the transmission of torque to the sleeve 9 with a compact arrangement of the elements of the drive part of the device and maintaining the independence of the transmission of torque to the saw blade 11 through the inner shaft 15. The flange connection 18 can be made using a connecting washer, flanges, fasteners, connecting plates or combinations thereof, ensuring the transmission of rotation from the outer hollow shaft 16 to the sleeve 9.

[0087] For moving the device, a moving shaft 19 is placed in the carriage 4, which is connected to the moving drive 8. In one embodiment, a driving gear 20 can be installed on the moving shaft of the carriage 19 as a counter element of the moving mechanism. When transmitting torque from the moving drive of the carriage 8 to the moving shaft of the carriage 19, the driving gear 20 can rotate and engage with the rack 2, due to which the movement of the carriage 4 along the rail 1 is ensured. Additionally, between the moving drive of the carriage 8 and the driving gear 20, at least one additional gear can be placed, which enters into toothed engagement with the driving gear 20 and ensures the transmission of torque from the moving drive of the carriage 8 to the moving shaft of the carriage 19.The placement of the drive gear 20 on the carriage movement shaft 19 ensures the transmission of torque to the rack 2 within the carriage 4, which facilitates the compact placement of the elements of the device movement mechanism.

[0088] In one embodiment, support rollers 21 are installed on the carriage 4, configured to interact with the guides 3 to ensure stabilization of the position of the carriage 4 relative to the rail 1.

[0089] In accordance with Fig. 3, the sleeve 9 is provided with a flexible transmission placed therein (not shown in Fig. 3), designed to transmit torque from the internal shaft 15 to the saw blade 11. The flexible transmission can be made, for example, by a belt, toothed belt, chain or other transmission, ensuring the transmission of torque between spaced shafts inside the sleeve 9.

[0090] In one embodiment, the rotation drive 13 of the saw blade 11 can be connected to the inner shaft 15 of the coaxial shaft assembly by means of a clutch 22 covering a section of the inner shaft 15 protruding from the outer hollow shaft 16. When the rotation drive 13 of the saw blade 11 is operating, the clutch 22 transmits rotation to the inner shaft 15. This embodiment of the connection of the rotation drive 13 with the inner shaft 15 ensures the transmission of rotation to the saw blade 11 through the inner shaft 15 when the rotation transmission elements are located within the common axial zone of the carriage 4.

[0091] The connection of the rotary drive 13 to the internal shaft 15 by means of the coupling 22 provides the possibility of installing and replacing various versions of the rotary drive 13. When replacing the rotary drive 13, the coupling 22 can be used, which is made with the connection dimensions, the shape of the connecting elements or the type of fit corresponding to the design parameters of the selected rotary drive 13. Due to this, the possibility of adapting the device to various cutting conditions and the characteristics of the solid objects being processed is ensured, and the technical maintenance of the device is simplified.

[0092] The flexible transmission comprises a driven element 23 located on the side of the saw blade 11, and a leading element 24 located on the side of the inner shaft 15.

[0093] The driving element 24 is kinematically connected to the inner shaft 15. In one embodiment, the driving element 24 of the flexible transmission can be mounted on the inner shaft 15 of the coaxial shaft assembly. When the inner shaft 15 rotates, the torque is transmitted to the driving element 24 of the flexible transmission, then via the flexible transmission to the driven element 23, kinematically connected to the saw blade 11. In this case, the installation of the driving element 24 on the inner shaft 15 ensures the transmission of rotation to the flexible transmission within the common axial zone of the carriage 4 and the sleeve 9.

[0094] The device comprises a mounting shaft 25 of a saw blade 11, mounted in a sleeve 9 so as to be able to rotate. In one embodiment, the mounting shaft 25 can be mounted in the sleeve 9 on bearings.

[0095] The driven element 23 of the flexible transmission is kinematically connected to the mounting shaft 25 of the saw blade 11. Due to this, when transmitting torque from the driving element 24 to the driven element 23, rotation of the mounting shaft 25 and the saw blade 11 fixed thereto is ensured. In one embodiment, the driven element 23 of the flexible transmission can be mounted on the mounting shaft 25 of the saw blade 11.

[0096] Thus, the torque from the inner shaft 15 is transmitted to the mounting shaft 25 through the flexible transmission elements located in the inner space of the sleeve 9, which facilitates the compact placement of the drive connection with the saw blade 11.

[0097] The placement of the flexible transmission in the sleeve 9 ensures the transmission of torque to the saw blade 11 inside the sleeve 9, while the rotation of the sleeve 9 relative to the carriage 4 does not interfere with the transmission of torque from the inner shaft 15 to the mounting shaft 25 of the saw blade 11.

[0098] The claimed device for cutting hard objects works as follows.

[0099] Before starting work, rail 1 is positioned relative to the object to be cut. The method for installing rail 1 may depend on the object's configuration, the desired cutting direction, and the work conditions. The machine can be used for cutting concrete, reinforced concrete, stone, brick, metal, and other solid objects, including building structures, slabs, walls, floors, foundation elements, and other reinforced concrete products. Once rail 1 is positioned, carriage 4 with saw blade 11 is allowed to move along the intended cutting line.

[0100] After installing rail 1, the initial positioning of carriage 4 is carried out. In this case, the driving gear 20 interacts with rack 2, ensuring the possibility of moving carriage 4 along rail 1, and guides 3 interact with support rollers 21, ensuring stabilization of the position of carriage 4 relative to rail 1.

[0101] After placing the device on the rail 1, the rotation drive 13 of the saw blade 11 is initially started to bring the saw blade 11 to working speed before moving it toward the object to be cut. When the rotation drive 13 is operating, the torque is transmitted to the clutch 22, which covers the section of the inner shaft 15 protruding from the outer hollow shaft 16. The clutch 22 transmits rotation to the inner shaft 15. When the inner shaft 15 rotates, the torque is transmitted to the driving element 24 of the flexible transmission. Then, the rotation is transmitted via the flexible transmission to the driven element 23 and the mounting shaft 25 of the saw blade 11. The mounting shaft 25 rotates in bearings installed in the sleeve 9 and ensuring the rotation of the saw blade 11 relative to the sleeve 9 when taking up the loads arising during cutting.

[0102] After the saw blade 11 has reached its working speed, the rotation drive 10 is started to set the saw blade 11 in the required position relative to the object to be cut.

[0103] When the rotation drive 10 is operating, the torque is transmitted to the rotation gear 17 and the outer hollow shaft 16. When the outer hollow shaft 16 rotates, the rotation is transmitted through the flange connection 18 to the sleeve 9, as a result of which the sleeve 9 rotates relative to the carriage 4. At the same time, the inner shaft 15 continues to transmit rotation to the saw blade 11 regardless of the rotation of the sleeve 9.

[0104] When the rotating saw blade 11 is brought to the object, the cutting edge of the saw blade 11 interacts with the material of the object, as a result of which, when the carriage 4 moves along the rail 1, a cutting line is formed.

[0105] After cutting is completed in one section of the object or if it is necessary to change the position of the saw blade 11 relative to the object, the movement drive 8 is started to move the carriage 4 along the rail 1. The movement of the carriage 4 along the rail 1 can be carried out to continue cutting along the cutting line, move to another section of the object or change the position of the saw blade 11 in cases where the rotation of the sleeve 9 is not enough to achieve the required position of the saw blade 11 relative to the object.

[0106] When the drive 8 is operating, torque is transmitted to the drive pinion 20, which is engaged with the rack 2. As the drive pinion 20 rotates, the carriage 4 moves along the rail 1 along with the device components mounted thereon. During movement, the guides 3 interact with the support rollers 21, stabilizing the position of the carriage 4 relative to the rail 1.

[0107] During operation, the device can simultaneously provide rotation of the saw blade 11, rotation of the sleeve 9 and movement of the carriage 4 along the rail 1. The transmission of torque to the saw blade 11 and to the sleeve 9 is carried out through the independently rotating inner shaft 15 and outer hollow shaft 16 of the coaxial shaft unit, and the movement of the carriage 4 along the rail 1 is ensured due to the interaction of the driving gear 20 with the rack 2. In this case, the elements of the movement mechanism are located within the carriage 4 together with the coaxial shaft unit without mutually hindering their operation.

[0108] The placement of the rotation drive 13 of the saw blade 11, the rotation drive 10 of the sleeve 9, and the movement drive 8 ensures the cutting operations, rotation of the sleeve 9, and movement of the carriage 4 without separating these drives into separate structural units. Moreover, the drive pinion 20, support rollers 21, and elements interacting with the rail 1 are also located within the carriage 4, which ensures a compact arrangement of the elements of the device's movement mechanism.

[0109] Thus, the above advantages make it possible to increase the compactness of the arrangement of the drive part of the device while ensuring independent transmission of torque to the saw blade 11 and to the sleeve 9. This is achieved by placing the elements of the rotation transmission within the coaxial shaft unit of the carriage 4, transmitting rotation to the saw blade 11 inside the sleeve 9, and also placing the elements of the mechanism for moving the device along the rail 1 within the carriage 4.

Claims

1. A device for cutting solid objects, comprising a rail, a carriage mounted so as to be able to move along the rail, a carriage movement drive connected to the carriage, a sleeve, a sleeve rotation drive, a saw blade, a saw blade rotation drive, characterized in that the carriage is provided with a coaxial shaft unit, including an internal shaft and an external hollow shaft, enclosing the internal shaft, the sleeve is provided with a flexible transmission placed therein, including a driving element, which is kinematically connected to the internal shaft, and a driven element, which is kinematically connected to the mounting shaft of the saw blade, wherein the internal shaft is kinematically connected to the saw blade rotation drive, and the external hollow shaft is kinematically connected to the sleeve rotation drive and to the sleeve, wherein the internal shaft and the external hollow shaft are mounted so as to be able to rotate independently.

2. The device according to item 1, characterized in that the inner shaft is made solid.

3. The device according to item 1, characterized in that the outer hollow shaft is mounted on bearings relative to the inner shaft.

4. The device according to paragraph 3, characterized in that the bearings are placed between the inner surface of the outer hollow shaft and the outer surface of the inner shaft.

5. The device according to claim 1, characterized in that the outer hollow shaft is equipped with a sleeve rotation gear, kinematically connected to the sleeve rotation drive.

6. The device according to item 1, characterized in that the outer hollow shaft is connected to the sleeve by means of a flange connection.

7. The device according to item 1, characterized in that the flexible transmission is made of a belt, toothed belt, or chain.

8. The device according to claim 1, characterized in that the driving element of the flexible transmission is installed on the inner shaft of the coaxial shaft assembly.

9. The device according to item 1, characterized in that the driven element of the flexible transmission is installed on the mounting shaft of the saw blade.

10. The device according to item 1, characterized in that the saw blade mounting shaft is installed in the sleeve on bearings.

11. The device according to claim 1, characterized in that the saw blade rotation drive is connected to the internal shaft of the coaxial shaft unit by means of a clutch.

12. The device according to claim 1, characterized in that the carriage movement drive is kinematically connected to the drive pinion, designed with the possibility of engagement with the rail rack.

13. The device according to item 1, characterized in that the carriage is equipped with support rollers installed with the possibility of interaction with the rail.

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