Rock drills and drilling rigs

Abstract

The present invention provides a rock drill and a rock drilling trolley, and relates to the field of rock drills. The rock drill provided by the present invention includes a functional component, a shell, a connecting component, and a base. The shell cover is arranged outside the functional component. The functional component includes a drill rod and a piston. The piston is used to impact the drill rod so as to perform an impact operation through an impact head connected to the end of the drill rod; the shell includes a first shell and a second shell spliced ​​along a first direction. The first shell is arranged outside the drill rod. The connecting component includes a first threaded connector and a second threaded connector. The second shell is detachably connected to the first shell through the first threaded connector. The outer side of the second shell has a first clamping portion, and the base has a second clamping portion that cooperates with the first clamping portion. The second threaded connector is used to threadably connect the second shell and the base when the first clamping portion and the second clamping portion are clamped. The base is fixedly installed on the rock drilling trolley. The present invention provides a rock drill and a rock drilling trolley with a secure connection and high reliability.

Description

Technical Field

[0001] The present invention relates to the field of threaded connection, and in particular to a threaded connection component and underwater cable joint equipment. Background Art

[0002] Hydraulic rock drills are important construction equipment in the fields of tunnel excavation and mining. They use a reversing valve to drive the hydraulic oil to drive the impact piston rod to continuously hit the end of the drill rod, generating impact stress, which is transmitted to the interface between the drill bit and the rock to produce a rock-breaking effect.

[0003] Existing hydraulic rock drills generally include a housing and various functional components, each of which is installed in the housing. The housing is generally multi-section, and the multi-section housings are detachably connected by threaded connectors to facilitate disassembly and maintenance.

[0004] However, the above-mentioned threaded connection is prone to fatigue deformation and relaxation under the high-frequency vibration of the rock drill, which affects the reliability of the rock drill. Summary of the Invention

[0005] In order to solve at least one of the problems mentioned in the background technology, the present invention provides a rock drill and a rock drilling rig with a firm connection and high reliability.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] In a first aspect, the present invention provides a rock drill for use with a rock drilling rig, comprising a functional assembly, a housing, a connection assembly, and a base, wherein the housing is disposed over the functional assembly, the functional assembly comprising a drill rod and a piston, the piston being configured to impact the drill rod to perform an impact operation via an impact head connected to the end of the drill rod;

[0008] The outer shell includes a first shell and a second shell spliced ​​along a first direction, the first shell is arranged outside the drill rod, the connecting assembly includes a first threaded connector and a second threaded connector, the second shell is detachably connected to the first shell through the first threaded connector, the outer side of the second shell has a first clamping portion, and the base has a second clamping portion that cooperates with the first clamping portion. The second threaded connector is used to threadably connect the second shell and the base when the first clamping portion and the second clamping portion are clamped, and the base is configured to be fixedly installed on the rock drilling rig, wherein the first direction is consistent with the moving direction of the piston.

[0009] As an optional embodiment, the second shell includes a first wall surface and a second adjacent wall surface, the first wall surface has a first threaded hole, the first threaded connector is passed through the first threaded hole, and the first clamping portion is located on the second wall surface.

[0010] As an optional implementation, the second wall surface has a second threaded hole, and the second threaded connection member is passed through the second threaded hole.

[0011] As an optional embodiment, there are two second threaded holes, and the two second threaded holes are symmetrically arranged on both sides of the first clamping portion along the second direction, and the second direction is perpendicular to the first direction.

[0012] As an optional implementation, the first clamping portion is a boss structure, and the second clamping portion is a groove structure.

[0013] As an optional implementation, the first clamping portion is a cylindrical hollow structure.

[0014] As an optional implementation, the height of the first clamping portion is smaller than the depth of the second clamping portion.

[0015] As an optional embodiment, the shell also includes a third shell, a fourth shell and a fifth shell, and the first shell, the second shell, the third shell, the fourth shell and the fifth shell are spliced ​​together in sequence along the first direction. The connecting assembly also includes a third threaded connector and a fourth threaded connector. The second shell, the third shell and the fourth shell are threadedly connected through the third threaded connector, and the fifth shell and the fourth shell are threadedly connected through the fourth threaded connector.

[0016] As an optional implementation, the fourth shell has a third clamping portion, and the base has a fourth clamping portion that cooperates with the third clamping portion.

[0017] In a second aspect, the present invention further provides a rock drilling trolley, comprising any one of the rock drills in the first aspect, wherein the rock drill is fixedly mounted on a trolley arm of the rock drilling trolley via a base.

[0018] The rock drill provided by the present invention is applied to a rock drilling trolley, and includes a functional component, a shell, a connecting component and a base. The shell cover is arranged outside the functional component. The functional component includes a drill rod and a piston. The piston is used to impact the drill rod so as to perform an impact operation through an impact head connected to the end of the drill rod; the shell includes a first shell and a second shell spliced ​​along a first direction, the first shell is arranged outside the drill rod, the connecting component includes a first threaded connector and a second threaded connector, the second shell is detachably connected to the first shell through the first threaded connector, the outer side of the second shell has a first clamping portion, and the base has a second clamping portion that cooperates with the first clamping portion, the second threaded connector is used to threadably connect the second shell and the base when the first clamping portion and the second clamping portion are clamped, and the base is configured to be fixedly installed on the rock drilling trolley, wherein the first direction is consistent with the moving direction of the piston.

[0019] The rock drill provided by the present invention is provided with a first clamping portion on one side of the second shell and a second clamping portion on the base. When the rock drill body is connected to the base, the first clamping portion and the second clamping portion can be clamped together first, and then the second shell and the base are threaded together through the second threaded connection piece. In this way, when the piston impacts the drill rod to perform operation, the axial impact force applied to the drill rod is transmitted to the first shell, and then to the second shell through the first threaded connection piece. The second shell can transmit the impact to the base through the first clamping portion thereon, thereby effectively preventing the first threaded connection piece and the second threaded connection piece from fatigue deformation and connection loosening due to excessive impact and load, thereby improving the reliability of the rock drill. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 A first partial cross-sectional view of a rock drill provided by an embodiment of the present invention;

[0022] Figure 2 A second partial cross-sectional view of a rock drill provided by an embodiment of the present invention;

[0023] Figure 3 A third partial cross-sectional view of a rock drill provided by an embodiment of the present invention;

[0024] Figure 4 A front view of a rock drill provided by an embodiment of the present invention;

[0025] Figure 5 A schematic structural diagram of a second housing in a rock drill provided by an embodiment of the present invention;

[0026] Figure 6 A schematic diagram of the cooperation between a second shell and a base in a rock drill provided by an embodiment of the present invention.

[0027] Description of reference numerals:

[0028] 100- rock drill;

[0029] 110- Functional components;

[0030] 111-drill rod;

[0031] 112-piston;

[0032] 120-housing;

[0033] 121-first housing;

[0034] 122- second housing;

[0035] 1221-first clamping portion;

[0036] 1222-first threaded hole;

[0037] 1223-second threaded hole;

[0038] 123-third shell;

[0039] 124- fourth shell;

[0040] 1241-third clamping portion;

[0041] 125- fifth shell;

[0042] 130-first threaded connection;

[0043] 140- second threaded connection;

[0044] 150-third threaded connection;

[0045] 160- fourth threaded connection;

[0046] 170-base;

[0047] 171- second clamping portion;

[0048] X-first direction;

[0049] Y-second direction. DETAILED DESCRIPTION

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0051] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe the present invention and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0052] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0053] Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0054] Furthermore, the terms "first," "second," etc., are primarily used to distinguish between different devices, elements, or components (which may or may not be of the same type and configuration), and are not intended to indicate or imply the relative importance or quantity of the devices, elements, or components indicated. Unless otherwise specified, "plurality" means two or more.

[0055] Existing hydraulic rock drills typically consist of a housing and various functional components, each of which is individually mounted within the housing. The housing is typically multi-section, connected by detachable threaded connectors for easy assembly and disassembly and maintenance. However, threaded connectors are susceptible to fatigue deformation and loosening due to the high-frequency vibrations of the rock drill, compromising the reliability of the rock drill.

[0056] In view of this, the present invention provides a rock drill, which is applied to a rock drilling trolley, and includes a functional component, a shell, a connecting component and a base. The shell cover is arranged outside the functional component. The functional component includes a drill rod and a piston. The piston is used to impact the drill rod so as to perform an impact operation through an impact head connected to the end of the drill rod; the shell includes a first shell and a second shell spliced ​​along a first direction, the first shell is arranged outside the drill rod, the connecting component includes a first threaded connector and a second threaded connector, the second shell is detachably connected to the first shell through the first threaded connector, the outer side of the second shell has a first clamping portion, and the base has a second clamping portion that cooperates with the first clamping portion. The base is configured to be fixedly installed on the rock drilling trolley. When connecting the rock drill body and the base, the first clamping portion and the second clamping portion can be clamped together first, and then the second shell and the base are threaded together through the second threaded connection piece. In this way, when the piston impacts the drill rod to operate, the axial impact force exerted on the drill rod is transmitted to the first shell, and then transmitted to the second shell through the first threaded connection piece. The second shell can transmit the impact to the base through the first clamping portion thereon, thereby effectively preventing the first threaded connection piece and the second threaded connection piece from fatigue deformation and connection loosening due to excessive impact and load, thereby improving the reliability of the rock drill.

[0057] Figure 1 A first partial cross-sectional view of a rock drill provided by an embodiment of the present invention; Figure 2 A second partial cross-sectional view of a rock drill provided by an embodiment of the present invention; Figure 3 A third partial cross-sectional view of a rock drill provided by an embodiment of the present invention; Figure 4 A front view of a rock drill provided by an embodiment of the present invention; Figure 5 A schematic structural diagram of a second housing in a rock drill provided by an embodiment of the present invention; Figure 6 A schematic diagram of the cooperation between a second shell and a base in a rock drill provided by an embodiment of the present invention.

[0058] You can refer to Figures 1 to 6The embodiment of the present invention provides a rock drill 100, which is applied to a rock drilling trolley, including a functional component 110, a housing 120, a connecting component and a base 170. The housing 120 is arranged outside the functional component 110. The functional component 110 includes a drill rod 111 and a piston 112. The piston 112 is used to impact the drill rod 111 so as to perform an impact operation through an impact head connected to the end of the drill rod 111; the housing 120 includes a first shell 121 and a second shell 122 spliced ​​along a first direction X. The first shell 121 is arranged outside the drill rod 111. The connecting component includes a first threaded connection. The second shell 122 is detachably connected to the first shell 121 through the first threaded connector 130. The outer side of the second shell 122 has a first clamping portion 1221. The base 170 has a second clamping portion 171 that cooperates with the first clamping portion 1221. The second threaded connector 140 is used to threadably connect the second shell 122 and the base 170 when the first clamping portion 1221 and the second clamping portion 171 are clamped. The base 170 is configured to be fixedly installed on the rock drilling rig, wherein the first direction X is consistent with the moving direction of the piston 112.

[0059] The rock drill 100 provided in the embodiment of the present invention has a first clamping portion 1221 provided on one side of the second housing 122 and a second clamping portion 171 provided on the base 170. When connecting the rock drill 100 body and the base 170, the first clamping portion 1221 and the second clamping portion 171 can be first clamped together, and then the second housing 122 and the base 170 can be threaded together via the second threaded connection 140. In this way, when the piston 112 strikes the drill rod 111 to perform operation, the axial impact force applied to the drill rod 111 is transmitted to the first housing 121, and then transmitted to the second housing 122 via the first threaded connection 130. The second housing 122 can transmit the impact to the base 170 via the first clamping portion 1221 thereon. This effectively prevents the first threaded connection 130 and the second threaded connection 140 from fatigue deformation and connection loosening due to excessive impact and load, thereby improving the reliability of the rock drill 100.

[0060] like Figure 5As shown, in the above embodiment, the second housing 122 may include a first wall surface and a second wall surface adjacent to each other, the first wall surface having a first threaded hole 1222, the first threaded connector 130 being inserted into the first threaded hole 1222, and the first engaging portion 1221 being located on the second wall surface. The first housing 121 may have a threaded hole opposite to the first threaded hole 1222, and the first threaded connector 130 may be a bolt, one end of which is inserted into the first threaded hole 1222 and the threaded hole on the first housing 121 along the first direction X, respectively, to connect the first housing 121 and the second housing 122. Specifically, the first threaded connector 130 may be provided in plurality, and the first housing 121 and the second housing 122 may be connected at different locations by multiple threaded connectors, thereby ensuring a more secure connection between the two. The first wall surface may be a surface perpendicular to the first direction X, so that the tension applied to the first threaded connector 130 is consistent with its own longitudinal direction. The second wall surface may be perpendicular to the first wall surface, facing the base 170 and abutting against the surface of the base 170.

[0061] In the above embodiment, the second wall surface may have a second threaded hole 1223, and the second threaded connector 140 is inserted into the second threaded hole 1223. It is understood that the base 170 may have a threaded hole corresponding to the second threaded hole 1223. When the first clamping portion 1221 on the second housing 122 and the second clamping portion 171 on the base 170 are clamped together, the second threaded hole 1223 on the second housing 122 is aligned with and connected to the upper threaded hole of the base 170. At this time, the second threaded connector 140 can be inserted into the second threaded hole 1223 and the upper threaded hole of the base 170 in sequence, further fixing the second housing 122 and the base 170. It is understood that when the rock drill 100 is in operation, the axial force (force along the first direction X) applied to the second housing 122 is mainly borne by the first clamping portion 1221 and the second clamping portion 171, thereby preventing the first threaded connector 130 from being subjected to excessive axial tension and the second threaded connector 140 from being subjected to excessive shear force.

[0062] In the above embodiment, there may be two second threaded holes 1223 , which are symmetrically arranged on both sides of the first clamping portion 1221 along the second direction Y, where the second direction Y is perpendicular to the first direction X. The second housing 122 and the base 170 are connected by the second threaded connectors 140 on both sides, which can make the force more uniform.

[0063] In the above embodiment, the first clamping portion 1221 can specifically be a boss structure, and the second clamping portion 171 can be a groove structure. When connecting the second shell 122 and the base 170, the boss on the second shell 122 can be clamped into the groove on the base 170 to achieve rapid positioning, and then bolted. The installation is convenient and the connection is reliable. The boss can be integrated with the second shell 122 to improve the load-bearing capacity of the boss. Specifically, the boss (first clamping portion 1221) can be a cylindrical hollow structure. It can be understood that the vibration direction of the rock drill 100 is not fixed when it is working, which causes extrusion between different sides of the boss and different side walls of the groove (second clamping portion 171). Designing the boss into a columnar structure can make the force on each side of the boss more uniform, avoiding local deformation due to stress concentration. Figure 5 As shown, the center of the boss can be designed as a hollow structure, which can reduce the weight of the second shell 122.

[0064] In the above embodiment, the height of the first clamping portion 1221 can be made smaller than the depth of the second clamping portion 171. In this way, when the boss is inserted into the groove, a gap is left between the end of the boss and the bottom of the groove. This allows the second wall surface of the second shell 122 to abut against the surface of the base 170, thereby making the connection between the second shell 122 and the base 170 more stable.

[0065] In the above embodiment, the shell 120 may further include a third shell 123, a fourth shell 124 and a fifth shell 125. The first shell 121, the second shell 122, the third shell 123, the fourth shell 124 and the fifth shell 125 are spliced ​​together in sequence along the first direction X. The connecting assembly also includes a third threaded connector 150 and a fourth threaded connector 160. The second shell 122, the third shell 123 and the fourth shell 124 are threadedly connected through the third threaded connector 150, and the fifth shell 125 and the fourth shell 124 are threadedly connected through the fourth threaded connector 160. Among them, the shell 120 adopts a detachable five-section structure, which is more convenient for disassembly and assembly for maintenance. The middle three sections (the second shell 122, the third shell 123 and the fourth shell 124) are connected by a third threaded connector 150 (a longer connector), which can improve the concentricity of the three and reduce the number of threaded connectors. The first threaded connector 130 (a shorter connector) is used between the first shell 121 and the second shell 122, which can withstand greater loads and fatigue strength, thereby making the overall force of the shell 120 more uniform.

[0066] In the above embodiment, the fourth housing 124 may have a third clamping portion 1241, and the base 170 may have a fourth clamping portion that cooperates with the third clamping portion 1241. By connecting the second housing 122 and the fourth housing 124 to the base 170 at the same time, the reliability of the connection can be further improved. The third clamping portion 1241 can be specifically designed as follows: Figure 6 In addition, after the fourth housing 124 is engaged with the base 170, it can also be further bolted, and the connection method is similar to the connection method between the second housing 122 and the base 170, which will not be described here.

[0067] The rock drill 100 provided in an embodiment of the present invention is applied to a rock drilling trolley, and includes a functional component 110, a housing 120, a connecting component, and a base 170. The housing 120 is arranged outside the functional component 110. The functional component 110 includes a drill rod 111 and a piston 112. The piston 112 is used to impact the drill rod 111 so as to perform an impact operation through an impact head connected to the end of the drill rod 111; the housing 120 includes a first shell 121 and a second shell 122 spliced ​​along a first direction X. The first shell 121 is arranged outside the drill rod 111. The connecting component includes a first threaded connector 111. 30 and the second threaded connector 140, the second shell 122 is detachably connected to the first shell 121 through the first threaded connector 130, the outer side of the second shell 122 has a first clamping portion 1221, and the base 170 has a second clamping portion 171 that cooperates with the first clamping portion 1221. The second threaded connector 140 is used to threadably connect the second shell 122 and the base 170 when the first clamping portion 1221 and the second clamping portion 171 are clamped. The base 170 is configured to be fixedly installed on the rock drilling rig, wherein the first direction X is consistent with the moving direction of the piston 112.

[0068] The rock drill 100 provided in the embodiment of the present invention has a first clamping portion 1221 provided on one side of the second housing 122 and a second clamping portion 171 provided on the base 170. When connecting the rock drill 100 body and the base 170, the first clamping portion 1221 and the second clamping portion 171 can be first clamped together, and then the second housing 122 and the base 170 can be threaded together via the second threaded connection 140. In this way, when the piston 112 strikes the drill rod 111 to perform operation, the axial impact force applied to the drill rod 111 is transmitted to the first housing 121, and then transmitted to the second housing 122 via the first threaded connection 130. The second housing 122 can transmit the impact to the base 170 via the first clamping portion 1221 thereon. This effectively prevents the first threaded connection 130 and the second threaded connection 140 from fatigue deformation and connection loosening due to excessive impact and load, thereby improving the reliability of the rock drill 100.

[0069] In addition, an embodiment of the present invention further provides a rock drilling rig, which includes any one of the rock drills 100 described in the above embodiments. The rock drill 100 can be fixedly mounted on the trolley arm of the rock drilling rig via a base 170. Specifically, during installation, the base 170 can be welded to the trolley arm or connected via other detachable connection methods, which are not specifically limited herein. When maintenance of the rock drill 100 is required, the rock drill 100 can be removed from the base 170. The rock drilling rig in the embodiment of the present invention improves equipment reliability and reduces failure rate due to the use of the rock drill 100 described in the above embodiments.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rock drill, characterized in that: Applied to a rock drilling rig, comprising a functional component, a housing, a connection component, and a base, wherein the housing is provided outside the functional component, the functional component comprises a drill rod and a piston, the piston being used to impact the drill rod, so as to perform an impact operation through an impact head connected to the end of the drill rod; The outer shell includes a first shell, a second shell, a third shell, a fourth shell and a fifth shell which are spliced ​​in sequence along a first direction, the first shell is arranged outside the drill rod, the connecting assembly includes a first threaded connector, a second threaded connector, a third threaded connector and a fourth threaded connector, the second shell is detachably connected to the first shell through the first threaded connector, the outer side of the second shell has a first clamping portion, the base has a second clamping portion that cooperates with the first clamping portion, the second threaded connector is used to threadably connect the second shell and the base when the first clamping portion and the second clamping portion are clamped, the base is configured to be fixedly installed on the drilling rig, the second shell, the third shell and the fourth shell are threadedly connected through the third threaded connector, the fifth shell and the fourth shell are threadedly connected through the fourth threaded connector, wherein the first direction is consistent with the moving direction of the piston.

2. The rock drill according to claim 1, characterized in that The second shell includes a first wall surface and a second wall surface adjacent to each other. The first wall surface has a first threaded hole. The first threaded connector is inserted into the first threaded hole. The first clamping portion is located on the second wall surface.

3. The rock drill according to claim 2, characterized in that The second wall surface has a second threaded hole, and the second threaded connector is passed through the second threaded hole.

4. The rock drill according to claim 3, characterized in that There are two second threaded holes, and the two second threaded holes are symmetrically arranged on both sides of the first clamping portion along a second direction, and the second direction is perpendicular to the first direction.

5. The rock drill according to claim 4, characterized in that The first clamping portion is a boss structure, and the second clamping portion is a groove structure.

6. The rock drill according to claim 5, characterized in that The first clamping portion is a cylindrical hollow structure.

7. The rock drill according to claim 6, characterized in that The height of the first clamping portion is smaller than the depth of the second clamping portion.

8. The rock drill according to claim 7, characterized in that The fourth shell has a third clamping portion, and the base has a fourth clamping portion that matches the third clamping portion.

9. A rock drilling rig, characterized in that: A rock drill comprising any one of claims 1 to 8, wherein the rock drill is fixedly mounted on the trolley arm of the rock drilling trolley via the base.

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