JP2013503990A - Rock drilling device, feed beam and vibration damping method - Google Patents

Abstract

The present invention relates to a rock drilling device, a feed beam, and a vibration damping method in a rock drilling device. In the rock drilling device (3), a damping element (13) is disposed between the joint surfaces of the two interconnected elements to dampen the vibration and prevent its propagation into the rock drilling device assembly. The feed beam (6) is divided into two or more elements (6a, 6b) between which elastic damping elements are arranged depending on the case.
[Selection] Figure 3

Description

Background of the Invention

  The present invention relates to a rock drilling device that can be connected to a rock drilling rig. The rock drilling device includes a rock drill supported by a long feed beam and movable on the feed beam by the feed device. The feed beam is then connected to the excavation boom of the rock drilling rig by tightening members.

  The invention further relates to a feed beam and a vibration damping method in a rock drilling device. The field of the invention is described in further detail in the preamble of the independent claims of this patent application.

  Rock drilling rigs are used to drill drilled rock mass at both mines and civil engineering sites. A rock rig generally includes a drilling boom with a rock drilling device having at least a rock drill, a feed beam and a feed device. A rock drill applies an impact pulse to a tool that breaks the rock and forms a borehole. The operation of the jackhammer produces very strong vibrations that propagate in turn to the components in the jackhammer and further to the drilling boom of the rock drill rig and other parts of the structure. Vibration causes acoustic emission from the surface of each component, which diffuses unpleasant noise into the surrounding area. In addition to noise, vibrations that propagate through the structure also cause movement between components, which can cause premature wear and other problems with the durability of each device.

BRIEF DESCRIPTION OF THE INVENTION

  The present invention seeks to provide a new and improved rock drilling apparatus, feed beam and vibration damping method.

  The rock drilling apparatus of the present invention is characterized by the following points. That is, the feed beam includes at least two feed beam parts disposed one above the other, the first feed beam part is on the rock drill side, the second feed beam part is on the tightening member side, Between the first and second feed beam components is at least one damping element that separates the mating surfaces of the feed beam components from each other.

  The feed beam of the present invention is characterized by the following points. That is, the cross section of the feed beam includes at least one first beam component and at least one second feed beam component, which are the same length as the feed beam and are clamped up and down with respect to each other. Between the first and second feed beam components is at least one damping element arranged to damp vibrations in the feed beam or prevent vibration propagation between both feed beam components.

  The method according to the invention is characterized in that the feed beam is formed of at least two beam parts and at least one damping element is arranged between their joint surfaces to prevent vibration propagation through the feed beam.

  The concept of the present invention is to dampen vibrations generated by a rock drill in the rock drilling device and prevent its propagation between components belonging to the rock drilling device. The normal metal interface between the components of the rock drilling device can be separated from one another by damping elements. The feed beam includes a first feed beam component and a second feed beam component, and one or more damping elements are disposed between their mating surfaces.

  An advantage of the present invention is that vibration can be damped near the vibration source. Furthermore, it is possible to efficiently and easily prevent vibrations from propagating from the rock drilling device to the excavation beam and throughout the rock drilling rig. When the vibration is attenuated, the noise generated by the vibration can be reduced. The demand for noise prevention will become increasingly severe in the near future. The present invention provides a relatively simple method as part of noise prevention. Furthermore, if the damping device of the present invention can reduce the vibration that causes premature wear on the structure, the movable life of the rock rig can be extended, and the need for maintenance can be reduced.

  The concept of an embodiment is to place one or more damping elements in the area between the rock drill and the feed beam. Thereby, propagation of vibration from the rock drill to the feed beam can be prevented. The feed beam often has a fairly large surface and is believed to emit noise as a result of vibration. In this embodiment, it is possible to prevent propagation of noise due to the structure to the feed beam.

  The concept of an embodiment is that the feed beam structure is composed of one or more attenuation elements. This therefore reduces the vibration propagation through the feed beam. Furthermore, the damping elements in the feed beam can absorb vibrations and thus can attenuate the vibrations in the feed beam.

  In one embodiment, the concept is that the feed beam is composed of a first feed beam component and a second feed beam component, which have substantially the same length as the feed beam, one between their mating surfaces. The above damping element is disposed. These feed beam parts are fixedly fixed with respect to each other. The first feed beam component comprises a first support surface on which the carriage can be supported. The second feed beam component includes a second support surface on which the cradle can be supported. This embodiment prevents the propagation of vibrations through the feed beam structure. In addition, the damping element can dampen the vibration of the feed beam. Furthermore, the wall surface of a two-part or multi-part feed beam is smaller than a single-part feed beam, thereby reducing the risk of noise due to wall vibration.

  The concept of an embodiment is that the feed beam is composed of a first feed beam component and a second feed beam component. The second feed beam part is formed of two components connected to each other in the transverse direction of the feed beam. There may be a shape locking clamp between the first feed beam part and the second feed beam part.

  The concept of an embodiment is that the feed beam is connected to the excavating boom or other structure of the rock rig by a clamping member. At the tightening member, there may be one or more damping elements that reduce the propagation of vibrations forward from the rock drilling device. The tightening member may be a cradle supported by an elongate guide surface on the feed beam side, so that the cradle and the feed beam can move relative to each other. The cradle may be formed of two or more parts, so that the damping element can be disposed on the interface between these parts.

  The concept of an embodiment is to connect a rock drill to the feed beam with a carriage. The carriage is composed of a first carriage component and a second carriage component arranged one above the other, and one or more damping elements may be disposed between them. The first carriage part is arranged with respect to the rock drill, and the second carriage part is arranged on the feed beam side. During excavation, the feed force is sent to the first carriage part on the side of the rock drill, whereby the feed force is sent firmly to the rock drill without going through the damping element.

  The concept of an embodiment is that the rock drill is supported on the feed beam by one or more interchangeable sliding blocks. In general, a plurality of sliding blocks are used. The rock drill may be connected to the feed beam by a carriage and a sliding block clamped thereto. Alternatively, the rock drill may be without a carriage so that the sliding block can be clamped to the body of the rock drill and supported by the feed beam. The damping element may be integrated with the sliding block. The sliding block may include at least two different materials: a sliding support and an elastic damping material. The sliding support member has a high wear resistance and is naturally intended to be arranged against the guide surface on the feed beam.

  The concept of an embodiment is that the rock drilling device has a protective casing that totally or at least partially surrounds the feed beam. The rock drill is also in the protective casing, which prevents the protective casing from emitting noise directly from the rock drill to the surrounding area. The protective casing may be formed of a vibration damping material and may be disposed between components belonging to the rock drill to prevent vibration propagation between interconnected components. When the vibration is attenuated in the rock drilling device, the vibration toward the protective casing and the resulting noise are also attenuated. This also simplifies the construction of the protective casing and the way in which it is tightened.

  The concept of an embodiment is that the feed beam has a first part on the rock drill side and a second part on the cradle side, between which the side walls of the protective casing are arranged to join them. It acts as a damping element between the surfaces. Alternatively, some other part of the protective casing, for example a tightening part or similar part, may function as a damping element.

  The concept of an embodiment is to make a coating applied to a component belonging to a rock drilling device function as a damping element. The coating can return and reflect vibrations or absorb vibrations.

  The concept of an embodiment is that the feed beam is at least partially coated with a material suitable for vibration prevention. In some cases, the feed beam or feed beam portion is entirely coated with this type of material.

  The concept of an embodiment is that the damping element is made of one or more vibration damping materials. The vibration damping material may be rubber, polymer, or other elastic material that hardly transmits vibration.

  The concept of an embodiment is that the damping element includes a mechanical damping member such as a spring member.

  The concept of an embodiment is that the damping element includes a pressure medium chamber in which a pressure medium is disposed to damp vibrations and prevent forward propagation thereof.

Several embodiments of the invention will now be described in more detail in the accompanying drawings.
It is a typical side view of a rock drilling rig. It is a typical side view of a rock drilling apparatus. FIG. 4 is a schematic cross-sectional view of a feed beam having two feed beam components connected to each other by a damping element. It is a typical cross section which shows the support of the rock drill by a 2nd feed beam and a carriage and a sliding block. FIG. 6 is a schematic cross-sectional view of a third feed beam, in which a cradle-side feed beam portion is formed by two parts interconnected in the transverse direction of the feed beam. FIG. 2 is a schematic cross-sectional view of a feed beam formed of two feed beam components, the feed beam components having a protective casing side surface between the connecting surfaces of each other. FIG. 3 is a schematic cross-sectional view of a feed beam disposed inside a protective casing, and the protective casing acts as a vibration damping member between the tightening surfaces of the feed beam and the cradle side sliding block. FIG. 2 is a schematic cross-sectional view of a feed beam fastened to a protective casing, which connects the feed beam and a cradle side sliding block to each other and also serves as a vibration damping element. 1 is a schematic cross-sectional view of a rock drilling device having a rock drill disposed on a carriage, the carriage being divided into two parts separated from each other by a vibration damping element. 1 is a schematic cross-sectional view of a rock drilling apparatus having a damping element between a rock drill and a carriage, and the rock drill has a feed surface that directly transmits a feed force to the rock drill. It is a typical cross-sectional view of the rock drilling device in which the connecting means to the cradle is disposed in the protective casing. FIG. 2 is a schematic cross-sectional view of a rock drilling device, in which two beam parts are arranged one above the other in a cross-section of a feed beam, and a protective casing is fastened to a cradle-side beam part. Or FIG. 2 is a schematic cross-sectional view of a feed beam, each feed beam having at least two feed beam components arranged one above the other and immovable with respect to each other. Or FIG. 3 is a schematic cross-sectional view of a feed beam, each feed beam having a substantially U-shaped cross section on a respective rock drill side portion. FIG. 6 is a schematic exploded view of possible derivation elements. It is a figure which shows the said derivation | leading-out element arrange | positioned in a protective casing.

  In the figures, some embodiments of the invention are simplified for the sake of clarity. In the drawings, similar parts are denoted by the same reference numerals.

Detailed Description of Some Embodiments of the Invention

  The rock drilling rig shown in FIG. 1 has a movable carrier 1, which has one or more excavating booms 2 on which a rock drilling device 3 is arranged. The rock drilling device 3 includes a rock drilling machine 4, which has an impact device that applies an impact pulse to a tool 5 connected to the rock drilling machine, and transmits the impact pulse to the rock to be excavated. The rock drill 4 is moved in the direction A on the feed beam 6 by the feed device.

  FIG. 2 shows the structure of the rock drilling device 3 in more detail. The feed beam 6 is an elongated part, to which the rock drill 4 can be connected by a carriage 7, or the body of the rock drill 4 is supported on the feed beam without a carriage, for example by means of a suitable sliding block. May be. The feed device 8 can be connected to act on the carriage 7 or, in the case of a structure without a carriage, the feed device 8 is arranged to act directly on the rock drill. The feed beam 6 is supported by the cradle 9 on the excavation boom 2, and the feed beam 6 can move in the longitudinal direction B with respect to the end of the excavation boom 2. In some cases, if it is not necessary to move the feed beam 2 in the B direction, some other fastening member may be provided between the feed beam 6 and the excavating boom 2 instead of the cradle. Furthermore, the rock drilling device 3 may have a protective casing 10 surrounding the rock drilling device 3 or at least a part thereof, or a similar protective structure. The purpose of the protective casing 10 is to attenuate the noise emitted from the rock drill 4 to the surrounding area, protect the people at the excavation site, and sometimes protect the rock drilling device from external blows.

  Vibration is generated by the operation of the rock drill 4 and propagates to the structure of the rock drilling device 3. In particular, not only the operation of the impact device 11 but also the operation of the rotating device 12 causes vibrations, which are propagated from the rock drill 4 to the carriage 7, further to the feed beam 6, and finally to the excavating boom 2 via the cradle 9. From here, it may propagate to other structures in the rock drilling rig. The vibration is transmitted to the constituent elements one after another via a joint surface between the constituent elements. In the damping embodiment presented in this patent application, the vibration in each component belonging to the rock drilling device is damped and the joint surfaces are separated from each other, thereby preventing the propagation of harmful vibrations between each component belonging to the rock drilling device. Can be prevented. The damping element can act as a separation device between components, which can partially return and reflect vibrations, or can act as a propagation damping device, which absorbs vibrations and absorbs vibration energy. Can be converted into heat. Depending on the case, the damping element may attenuate the vibration by using one or more of the above-described principles.

  FIG. 3 shows a cross section of the vibration-damping feed beam 6. The feed beam 6 has a first feed beam component 6a on the rock drill side and a second feed beam component 6b on the cradle side, and further includes one or more damping elements 13 disposed between the two components. The joint surfaces of the feed beam parts 6a and 6b are separated from each other. The damping element 13 can be made of an elastic material, which damps vibrations and prevents its propagation from the first feed beam part 6a to the second feed beam part 6b. In addition to separation, the damping element 13 can also absorb vibrations. The first feed beam part 6a has a first support surface 14, against which a sliding block or similar sliding surface can abut in the carriage or directly in a rock drill. Similarly, the second feed beam component 6b has a second support surface 15 against which a cradle or similar tightening member can abut. In some cases, the feed beam 6 comprises more feed beam components, eg a third or intermediate feed between the first feed beam component 6a and the second feed beam component 6b shown in FIG. Beam parts can be provided and separated from the upper and lower feed beam parts by the damping element 13. It is also possible to use a plurality of separate damping elements instead of a single integral damping element 13.

  FIG. 4 shows the feed beam 6, which also has two feed beam parts 6a and 6b which are arranged one above the other and apart from each other. Unlike FIG. 3, instead of the integral damping element 13, a plurality of separate damping elements 13a, 13b are arranged between the feed beam parts 6a, 6b, and their damping capacity depends on their material, shape or mechanical functionality. Based on FIG. 4 further illustrates the presence of a sliding block 16 between the carriage 7 and each support surface 14 of the first feed beam component 6a, which may be formed of at least two different materials. The sliding block 16 is preferably composed of a material 16a having good sliding resistance on the support surface 14 side, and a material 16b having good vibration isolation on the carriage 7 side. Furthermore, it is believed that the sliding block 16 can be made of a material having good resistance and damping characteristics. Therefore, the sliding block 16 is also involved in vibration isolation. This type of sliding block 16 can also be used in other embodiments described in this patent application.

  FIG. 4 further shows that the feed beam 6 and feed beam components 6a, 6b, which are hollow on the inside, may be wholly or partly filled with filler 17. The filler 17 may be a lightweight foam material such as polyurethane that attenuates the vibration of the feed beam wall and prevents noise generation. Long feed beams often have fairly large and thin walls, and begin to vibrate easily and generate noise. This embodiment can be used to supplement actual vibration damping as needed.

  FIG. 5 shows a feed beam 6 having a first feed beam component 6a and a second feed beam component 6b arranged one above the other. The second feed beam part 6b on the cradle side is divided into two elongate elements 18a and 18b, which may be symmetrical in cross section. Elements 18a, 18b are joined together in the transverse direction C of the feed beam. Furthermore, the bottom of the cross-sectional profile of the first feed beam part 6a has a protrusion 19, which can be a dovetail, for example. Similarly, the joined elements 18a and 18b form a correspondingly shaped space 20 capable of receiving the protrusion 19 on the rocker-side upper surface. The protrusion 19 and the space 20 form a shape locking portion between the feed beam parts 6a and 6b, whereby the feed beam parts are tightened firmly and the feed beam is strengthened. In addition, there are one or more damping elements 13 between the joint surfaces of the feed beam parts 6a, 6b, which prevent vibration propagation in the structure of the feed beam 6. The damping element 13 can also absorb vibrations. The damping element 13 remains firmly in place between the molded feed beam parts 6a, 6b. The cross-sectional shape of the damping element may correspond to the shape of its joining surface. The damping element can be, for example, a molded casting or an extrusion. For example, screwing may be used between the elements 18a and 18b. With this shape locking portion, the feed beam parts 6a and 6b are kept in a tightened state with each other without any other tightening means. Unlike FIG. 5, the second feed beam part 6 b may have a protrusion, and the first feed beam part 6 a may have a space for receiving the protrusion 19.

  The damping element shown in FIGS. 3 and 5 may be a separate part, or it may be a coating or similar material layer attached to one or both of the feed beam parts 6a, 6b.

  In the method shown in FIG. 6, the first feed beam portion 6 a is disposed inside the protective casing 10. The side surface 10a of the protective casing 10 may be disposed between the joint surfaces of the first feed beam portion 6a and the second feed beam portion 6b. In this case, the side surface 10a separates the joint surfaces from each other. . The protective casing 10 may be formed of a material capable of blocking vibration propagation, whereby the side surface 10a can act as a damping element between the joining surfaces. Of course, only one side 10a of the protective casing can be made of vibration isolating material, so that the remaining material and structure of the protective structure can be freely chosen. A coating made of vibration isolating material can be disposed on the side surface 10a of the protective casing, and further damping elements can be used.

  FIG. 7 shows an embodiment in which the rock drill 4 and the feed beam 6 are arranged inside the protective casing 10. The feed beam 6 has a cradle-side joining surface 22, and a sliding guide 23 that can be attached to and detached from the cradle is fastened thereto. The sliding guide 23 has a sliding surface 15a, which may be supported by a cradle. The side surface 10a of the protective casing 10 is arranged between the joint surface 22 of the feed beam and the side surface 24 of the sliding guide and can thereby act as a vibration isolation element. The material of the protective casing 10 may be made of a material that blocks and absorbs vibration. This scheme eliminates the need to change the cross-sectional profile and structure of the conventional rigid feed beam 6.

  FIG. 7 further shows that the rock drill 4 may be without a carriage, in which case its body 25 is supported directly by the sliding block 16 on the support surface 14 of the feed beam. A blocking layer may be integrated with the structure of the sliding block 16. Furthermore, there may be a damping element between the body 25 and the sliding block.

  FIG. 7 may further include a damping strip 35 on the side of the feed beam 6 that can affect the vibration characteristics of the feed beam 6. The number, location, material and shape of the attenuating strips 35 may be selected individually depending on the individual case.

  In the system shown in FIG. 8, the feed beam 6 is fastened to the protective casing 10, where the casing is fastened to the sliding guide 23 on the cradle side. The joint surface 22 of the feed beam 6 is not disposed on the joint surface 24 of the sliding guide, and tightening is performed via the wall 10a structure of the protective casing. The protective casing 10 may be made of an elastic material, so that the wall 10a can act as a vibration isolation clamp between the feed beam 6 and the sliding guide 23.

  FIG. 9 shows a possible embodiment in which the carriage 7 is divided into a first carriage part 7a on the rock drill 4 side and a second carriage part 7b on the feed beam side. One or more damping elements 13 are disposed between the carriage portions 7a and 7b, and the joint surfaces between the carriage portions are separated from each other. The second carriage part 7b has a sliding block 16, and is supported by the feed beam by the sliding block. The rock drilling machine 4 can be firmly fastened to the first carriage part 7a, whereby the feeding force can be transmitted from the feeding device to the first carriage part 7a. The first carriage portion 7a may be provided with a protrusion 26, which is disposed through the opening 27 in the second carriage portion 7b and extends to the groove 28 on the upper surface side of the feed beam 6. Can do. The feeding device may be disposed in the groove. Connection points at which the feeding device can be arranged to direct the feeding force are indicated by broken lines in the protrusion 26. Even if the feed force is sent to the first carriage portion 7a, no harmful load is applied to the damping element 13.

  FIG. 10 shows a further embodiment in which one or more damping elements 13 are arranged between the body 25 of the rock drill 4 and the carriage 7. In this case, the feed force can be sent directly to the body 25 of the rock drill, so that the feed force is not transmitted through the damping element 13. Accordingly, the feeding force does not distort the damping element 13, while the damping element 13 does not expand and contract, and no error in feeding motion is caused thereby. A protrusion 30 may be provided on the bottom side of the main body 25, and a feeding force can be sent to the connection point 29 therein. The feed device can be disposed in a groove 28 on the top surface of the feed beam 6. Alternatively, the main body 25 may be provided with, for example, one or more connection points 31 on the upper surface thereof.

  It should be noted here that in the embodiment of FIGS. 9 and 10, the feed beam 6 may be a single unitary structure as shown, or separated from each other by a damping element, for example as shown in FIGS. It may be divided into two or more parts. Furthermore, the various damping elements in these embodiments can be combined.

  Overall, it should be further noted that the connecting surfaces of the components of the rock drilling device may be coated with a vibration damping material. Alternatively, another vibration-damping elastic component may be disposed between the connection surfaces. Furthermore, a mechanical vibration damping structure can be disposed on the connection surface between the components. The mechanical structure may be based on a spring member, for example. The operation of the damping element may be based on the use of a pressure medium, for example.

  FIG. 10 shows the coating 32 disposed around the feed beam 6 in broken lines, which can be made of a suitable elastic material such as plastic or rubber. The coating 32 may surround the entire feed beam, or the coating 32 may be disposed so as to cover all other parts other than the guide surface of the feed beam. Similarly, a coating can be disposed around other components of the rock drilling device 3. Thus, for example, the carriage 7 and the rock drill 4 may be provided with coatings 33 and 34. These coatings can absorb vibrations and reflect them back. Further, in some cases, the coating may function as a vibration isolation layer between the components.

  In the embodiment shown in FIG. 11, the rock drill 4, the feed beam 6 and possibly the carriage 7 are arranged in the protective casing 10. One or more sides of the protective casing 10 may be provided with means for attaching them to the cradle. The attachment means may comprise a guide beam 36 with support surface 15 or the like. In this embodiment, the protective casing 10 may be completely closed. This is because there is no need to provide a movement opening between the cradle and the feed beam. The soundproofing of the protective casing 10 can be improved by sealing it as much as possible. The feed beam 6 is fastened to the cradle via the protective casing 10 and the guide beam 36. The material of the protective casing 10 can be selected to block vibration propagation from the feed beam 6 to the cradle. Of course, damping elements of the kind described above can be arranged at the connection points between the protective casing 10 and the feed beam 6 and between the protective casing 6 and the guide beam 36.

  FIG. 12 shows a feed beam 6 whose cross section comprises two beam parts 6a and 6b arranged one above the other, which are fixedly clamped against each other during use, both of which are sufficiently rigid. And a feed beam having other characteristics. The protective casing 10 may be fastened to the cradle side beam part 6b. The fastening point of the protective casing 10 may be provided with a damping element 37 of the type described in this patent application. In the present embodiment, the lower feed beam component 6b in the figure forms the bottom of the protective casing 10, so that the feed beam 6 forms part of the protective casing 10.

  In addition, the damping elements and other devices described in this patent application are not only rock drilling devices, but also other mining devices that use other power tools such as bolting machines that produce harmful vibrations as mining tools, Applicable instead of rock drill.

  13 to 18 show still another feed beam system that may be different from the above-described embodiment.

  FIG. 13 shows a cross section of the feed beam 6 having the first feed beam component 6a on the rock drill side and the second feed beam component 6b on the cradle side. The feed beam parts 6a and 6b are fastened to each other so as to form a feed beam that supports the rock drill. The feed beam components 6a, 6b may be substantially the same length as the feed beam 6. The feed beam 6 may be a component that is overlapped in two longitudinal directions as if it were divided at the center or symmetrically. In some cases, the feed beam may consist of feed beam components that are shorter than the entire feed beam. For example, the second feed beam component 6b may be composed of one or more short components that are separately clamped to the first feed beam component 6a. Even in this case, the cross section of the feed beam 6 has at least one first feed beam component 6a and at least one second feed beam component 6b arranged one above the other.

  FIG. 14 shows a feed beam 6 comprising a plurality of longitudinal parts. The cross section of the feed beam may have a first feed beam part 6a on the rock drill side and a second feed beam part 6b on the cradle side, at least the latter comprising two or more components 18a. , 18b may be divided. Between the feed beam parts 6a and 6b there may be a suitable shape locking member such as a protrusion 19 and a space 20 for receiving it as described in connection with the embodiment of FIG. Similar principles apply to the embodiment of FIG. In some cases, there may be a plurality of feed beam components arranged one above the other, and the first feed beam component 6a may also be composed of two or more components in the transverse direction C.

  In FIG. 15, the side wall 10a of the protective casing 10 is disposed between the first and second feed beam components 6a and 6b arranged one above the other. The protective casing 10 may be made of a thin steel plate that has been found to have good vibration propagation damping.

  It should also be noted that a feed beam formed of feed beam components may be arranged to form part of the protective casing that surrounds the rock drill. Thus, the protective casing may be fastened to the first or second feed beam component or disposed between both connection surfaces. Alternatively, the two part feed beam is not part of the casing. Therefore, the protective casing may be disposed around the feed beam.

  A common factor for each feed beam of the rock drilling rig shown in FIGS. 13 to 15 is that the feed beam is an elongated part, and at least a part of the cross section thereof is at least one first feed beam part 6a. And at least one second feed beam component 6b, both of which are arranged one above the other and stationary with respect to one another. In addition, the feed beam may have a first support surface 14 in the first feed beam part 6a, on which the rock drill 4 is movably supported and in the second feed beam part 6b. There may be a second support surface 15 whereby the feed beam 6 is clamped to the rock rig.

  16 to 18 show still another rock drilling apparatus in which the feed beam is different from those of the above-described embodiments.

  FIG. 16 shows a feed beam 6 with a tank-like cross section having a bottom 6c and two sides 6d. The side portions 6d may extend equidistant from the bottom portion 6c, or may have different heights as shown in FIGS. The rock drill 6 may be arranged in the carriage 7 by the method shown in FIGS. The carriage 7 may be supported on the bottom 6c and side 6d using a suitable sliding block 16 or equivalent. The bottom 6c may have a guide surface or the like, on which the carriage 7 can be supported. In FIG. 17, the rock drill 4 is supported directly by the feed beam 6 without the carriage 6.

  16 to 18, the tank-shaped feed beam 6 or one having a U-shaped cross section serves as a part of a casing surrounding the rock drill 4. The tub-like feed beam 6 can be closed with a lid 38, which can be connected to the top of the side 6d, for example with a hinge 39, so that the lid 38 opens and closes, for example during maintenance and drill rod replacement. be able to.

  A coating that may be provided on the feed beam 6 is shown in FIG. The coating 32 made of vibration damping material or vibration isolating material may be disposed on the inner surface of the feed beam 6 in a tank-like cross section, on the outer surface of the feed beam, or on both the inner and outer surfaces.

  In the embodiments shown in FIGS. 16 to 18, the vibration damping and vibration propagation preventing method between components disclosed in the present patent application can be applied.

  In the embodiment shown in FIG. 18, the feed beam 6 is composed of two feed beam parts 6a and 6b which are located one above the other. The cross section of the first feed beam part 6a is substantially U-shaped. The second feed beam part 6b is equipped with means for attaching it to the cradle.

  The common factor of each feed beam of the rock drilling rig shown in FIGS. 16 to 18 is that the feed beam 6 is an elongated part, and the side portion of the rock drilling machine has a bottom portion 6c and two side portions 6d separated from each other. It has the tank-shaped cross section provided. The rock drilling side part may thus have a substantially U-shaped cross section. The rock drill 4 moves inside the tank-shaped part. The tank-shaped feed beam forms a protective casing around the rock drill 4 with a lid 38 that can be opened and closed.

  19 and 20 show a lead-out element 40 that can be clamped to the protective casing 10, thereby providing the necessary pressure medium connection, electrical connection and other possible connections between the outside and inside of the protective casing 10. Can be provided. It has been found that rock sealing noise can be significantly reduced if the sealing of the protective casing can be improved. The lead-out element 40 allows various connections to be concentrated in one place, and the lead-out element 40 can also be hermetically clamped to the protective casing 10.

  As shown in FIG. 19, the lead-out element 40 has a connecting plate 41, which can be fastened to the lead-out opening 42, for example, in the body of the protective casing 10 by means of a threaded joint. One or more damping elements 43 may be disposed between the connection plate 41 and the protective casing 10 to prevent vibration propagation between the interconnected components. Further, one or more sealings 44 may be provided between the connection plate 41 and the protective casing 10, whereby the connection plate 41 can be hermetically tightened to the protective casing 10. The connection plate 41 has an opening 45, and a hydraulic hose, a pressurized air hose, an electric cable, or the like may be connected by tightening a required coupler 46 thereto. The coupler 46 allows for quick and easy connection release and reconnection, for example during maintenance.

  The derived elements shown in FIGS. 19 and 20 are characterized by the following points. That is, the lead-out element 40 has a connection plate 41 with a coupler 46 that guides the pressure medium conduit through the connection plate 41, and the connection plate 41 is provided with at least one sealing 44. A protective casing for a rock drilling rig of the type shown in FIGS. 19 and 20 is characterized by the following points. That is, all the pressure medium conduits necessary for the operation of the rock drill are led from at least one lead-out element 40 between the inside and the outside of the protective casing, and the connection plate 41 is hermetically tightened to the protective casing 10.

  In some cases, the configuration requirements described in this patent application may be used similarly regardless of the other configuration requirements. On the other hand, the constituent features described in this patent application may be combined as necessary to provide various combinations.

  The drawings and the related description are only intended to illustrate the concept of the invention. The details of the invention may vary within the scope of the claims.

Claims (7)

Jackhammer (4),
An elongated feed beam (6) on which the rock drill (4) is supported;
A feed device (8) for moving the rock drill (4) in the longitudinal direction of the feed beam (6);
A fastening member (9) connected to the feed beam (6) and fastening the rock drilling device (3) to the rock rig;
At least one damping element that attenuates vibration generated in the components belonging to the rock drilling device (3) by the operation of the rock drill (4) or vibration propagation between the components of the rock drilling device (3). In the rock drilling device (3) having (13),
The feed beam (6) includes at least two feed beam components (6a, 6b) disposed on top of each other, and the first feed beam component (6a) is located on the side of the rock drill (4). The second feed beam part (6b) is on the side of the fastening member (9),
Between the first feed beam part (6a) and the second feed beam part (6b) there is at least one damping element (13) separating the joint surfaces of the feed beam parts (6a, 6b) from each other. A rock drilling device characterized by being. A first support surface (14) for movably supporting the rock drill (4);
Including a second support surface (15) connecting the feed beam (6) to the rock drilling rig,
The cross section of the feed beam (6) comprises at least one first feed beam part (6a) and at least one second feed beam part (6b), both feed beam parts having a length which It ’s the same as the beam,
Between the first feed beam component (6a) and the second feed beam component (6b), vibrations in the feed beam are damped or vibration propagation between both feed beam components is prevented. Feeding beam for rock drilling rig, characterized in that there is at least one damping element (13) installed. The feed beam according to claim 2,
The second feed beam part (6b) is formed of two elongated parts (18a, 18b), which are connected to each other in the transverse direction (C) of the feed beam. Characteristic feed beam. The feed beam according to claim 3,
The cross-sectional profile of the first feed beam part (6a) includes a protrusion (19), which is oriented to the second feed beam part (6b),
The elongated parts (18a, 18b) of the second feed beam part (6b) are arranged so as to receive the protrusion (19) and form a shape locking part with the protrusion (19). A feed beam characterized by The feed beam according to any of claims 2 to 4, wherein the feed beam is
At least one protective casing (10) is fastened to the feed beam (6);
A part of the protective casing (10) is disposed between the joint surfaces of the feed beam parts (6a, 6b). The feed beam according to any one of claims 2 to 5,
A feeding beam characterized in that the damping element (13) is made of an elastic material. A rock drill (4), a feed beam (6), a feed device (8) for moving the rock drill (4) in the longitudinal direction (A) of the feed beam, and the feed beam (6) connected to the cutting machine. Look at the fastening member (9) that fastens the rock device (3) to the rock drilling rig,
In the rock drilling device (3), the vibration damping method in the rock drilling device for damping the vibration generated by the operation of the rock drill (4) by at least one damping element (13),
The feed beam (6) is formed of at least two parts (6a, 6b), and at least one damping element (13) is disposed between their joint surfaces to transmit vibration propagation through the feed beam (6). A method of damping vibration in a rock drilling device, characterized by preventing.

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