Rock drilling hammer and rock drilling system

Abstract

The utility model relates to the technical field of rock drilling, in particular to a rock drilling hammer and a rock drilling system. The rock drilling hammer comprises a hammer body, a joint piece extends out of the head of the hammer body, and a first through hole is formed in the joint piece; the hammer head is provided with a connecting groove, the connecting groove and the connector piece are embedded, a second through hole is formed in the connecting groove in a penetrating mode, and the second through hole and the first through hole are coaxially formed; and the pin shaft is matched with the first through hole and the second through hole and is fixedly connected with the hammer head. According to the rock drilling hammer provided by the utility model, the hammer head can be tightly connected to the hammer body through the embedding of the joint piece and the connecting groove, so that the relative shaking between the hammer body and the hammer head can be reduced; the hammer body and the hammer head are fixed through the pin shaft, and the hammer head can be conveniently replaced by mounting and dismounting the pin shaft; and the pin shaft is fixedly connected with the hammer head, so that the mounting strength of the pin shaft can be enhanced, the probability that the pin shaft falls off is reduced, the probability that the hammer head falls off in the construction process is reduced, and the connection tightness of the hammer body and the hammer head can be further enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of rock drilling, in particular to a rock drilling hammer and a rock drilling system. Background Art

[0002] With the vigorous development of urban areas and the gradual popularization of immersed tube tunnel construction, more and more inland waterways use immersed tube construction technology. During the laying of immersed tubes, it is often necessary to drill and level the riverbed. The construction of urban inland rivers is restricted by conditions such as narrow river channels, height restrictions on bridge navigation, and lack of blasting. Faced with large-volume, high-intensity, and tight-schedule underwater hard rock crushing and removal projects, the construction process generally uses special large-scale equipment and axe-type rock hammers as the main construction machinery.

[0003] The wear resistance and impact resistance of the axe-shaped rock hammer tip largely restrict the efficiency of rock breaking construction. Since the hammer tip is the main component of the rock hammer that wears out, it needs to be replaced frequently during rock breaking construction. The replacement and installation of the rock hammer body and the hammer tip inevitably face the problem of the tightness of the connection. If the connection is loose, the hammer tip may deviate from the rock hammer body during construction, thereby reducing the rock drilling accuracy. In more serious cases, the hammer tip may detach from the rock hammer body, posing a safety hazard. Utility Model Content

[0004] The purpose of the utility model is to overcome the problem in the background art that the connection between the hammer tip and the rock hammer body is not tight enough, and to provide a rock hammer and a rock drilling system.

[0005] In a first aspect, the present invention provides a rock hammer comprising:

[0006] A hammer body, wherein a joint piece extends from the head of the hammer body, and a first through-hole is provided on the joint piece;

[0007] A hammer head is provided with a connecting groove, the connecting groove is engaged with the connecting member, a second through-hole is provided through the connecting groove, and the second through-hole is coaxially provided with the first through-hole;

[0008] A pin shaft cooperates with the first through-hole and the second through-hole and is fixedly connected to the hammer head.

[0009] The utility model provides a rock hammer, wherein a joint piece is provided on the head of the hammer body, and a connecting groove is correspondingly provided on the hammer head, and the hammer head can be tightly connected to the hammer body through the engagement of the joint piece and the connecting groove, which is beneficial to reducing the relative shaking between the hammer body and the hammer head; the hammer body and the hammer head are fixed by a pin shaft, and the hammer head can be conveniently replaced by installing and removing the pin shaft; the fixed connection between the pin shaft and the hammer head can not only enhance the installation strength of the pin shaft, reduce the probability of the pin shaft coming off, reduce the probability of the hammer head falling off during construction, which is beneficial to construction safety, but also further enhance the tightness of the connection between the hammer body and the hammer head.

[0010] As a preferred solution of the present invention, the same pin shaft is passed through the coaxially arranged first through-hole and second through-hole, the side wall of the second through-hole facing outward is provided with a connecting groove, and a weld is provided between the outer wall of the pin shaft and the connecting groove.

[0011] As a preferred solution of the present invention, the side wall of the hammer head is provided with a first docking groove, and the side wall of the hammer tail is provided with a second docking groove corresponding to the first docking groove, and there is a weld between the first docking groove and the second docking groove.

[0012] As a preferred solution of the present invention, the hammer head is provided with an axe-shaped hammer tip, the width of the hammer tip decreases in the direction away from the tail of the hammer head, and the head of the hammer tip has an arc chamfer.

[0013] As a preferred solution of the present invention, the outer surface of the hammer head is provided with a first wear-resistant layer, and the first wear-resistant layer includes a plurality of wear-resistant strips in a grid shape.

[0014] As a preferred embodiment of the present invention, the hammer body includes a raised section and a transition section, the transition section is located on the side of the raised section close to the hammer head, the outer surfaces of the raised section and the transition section are continuously streamlined, and the size of the transition section in at least one direction decreases toward the direction close to the hammer head.

[0015] Used to reduce the resistance of the rock hammer when entering the water and increase the impact energy.

[0016] As a preferred solution of the present invention, the outer surface of the transition section is provided with a second wear-resistant layer, and the second wear-resistant layer includes a plurality of wear-resistant strips in a grid shape.

[0017] As a preferred solution of the present invention, a hanging hole is provided at the tail of the hammer body, and the hanging hole includes a first hole section with an arc-shaped axis, and: the arc of the axis of the first hole section is [1, π], and the two openings of the first hole section are respectively located on opposite sides of the hammer body.

[0018] The utility model provides a rock hammer, which, by arranging a first hole section with an arc-shaped axis at the tail of the hammer body, can keep the two ends of the suspension rope passing through the first hole section away from each other, thereby reducing the probability of the rock hammer rotating during use and causing deviation from the construction positioning, better stabilizing the suspended rock hammer, ensuring safety, and further improving rock breaking efficiency.

[0019] As a preferred solution of the present invention, the lifting hole also includes two second hole segments, which are respectively connected to the two ends of the first hole segment, and the second hole segment is away from the opening of the first hole segment and faces away from the hammer head.

[0020] As a preferred solution of the present invention, the axes of the two second hole segments are parallel to each other, and the first hole segment is symmetrical along the center axis of the hammer body.

[0021] In a second aspect, the present invention provides a rock drilling system, comprising a lifting rope, a lifting device and the rock hammer as described above, wherein the lifting rope passes through the lifting hole, and portions of the lifting rope located on both sides of the lifting hole are connected to the lifting device.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The utility model provides a rock hammer, in which a joint piece is provided on the head of the hammer body, and a connecting groove is correspondingly provided on the hammer head. The hammer head can be tightly connected to the hammer body by engaging the joint piece and the connecting groove, which is beneficial to reducing the relative shaking between the hammer body and the hammer head; the hammer body and the hammer head are fixed by a pin shaft, and the hammer head can be conveniently replaced by installing and removing the pin shaft; at least one end of the pin shaft is welded to the hammer head, and the installation strength of the pin shaft can be enhanced by welding, and the probability of the pin shaft coming off is reduced, thereby reducing the probability of the hammer head falling off during construction, which is beneficial to construction safety; and welding can further enhance the tightness of the connection between the hammer body and the hammer head. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the connection between the hammer head and the hammer head of the utility model;

[0025] Figure 2 This is a cross-sectional view (front view) of the rock hammer of the present invention;

[0026] Figure 3 A cross-sectional view (side view) of the rock hammer of the present invention;

[0027] Figure 4 This is a schematic structural diagram of the hammer body of the utility model;

[0028] Figure 5 This is a schematic structural diagram of the hammer head of the utility model;

[0029] Figure 6 This is a schematic structural diagram of the rock hammer of the present invention;

[0030] Figure 7 It is a structural schematic diagram of the rock drilling system of the utility model.

[0031] Markings in the figure:

[0032] 1- hammer;

[0033] 11-connector; 12-first perforation; 13-first butt groove; 14-second wear-resistant layer; 15-raised section; 16-transition section; 17-connecting section;

[0034] 2-Hammer head;

[0035] 21-connecting groove; 22-second perforation; 23-connecting groove; 24-first wear-resistant layer; 25-second connecting groove;

[0036] 3-pin;

[0037] 4- hammer tip;

[0038] 5- hanging hole;

[0039] 51-first hole section; 52-second hole section; 53-hanging hole; 54-protective cover;

[0040] 6-Lifting rope;

[0041] 7-Lifting device. DETAILED DESCRIPTION

[0042] The present invention will be further described in detail below with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments. All technologies implemented based on the present invention fall within the scope of the present invention.

[0043] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating orientation or positional relationships such as "upper," "lower," "left," "right," "center," "inside," and "outside" are based on the orientation or positional relationships shown in the accompanying drawings, or are the orientation or positional relationships in which the product / device / apparatus of the present invention is placed when it is conventionally used. These terms of orientation or positional relationships are merely for the purpose of facilitating the description of the present invention or simplifying the description of the specific embodiments to facilitate a quick understanding of the solutions by technicians, and do not indicate or imply that a particular device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship. Therefore, they should not be understood as limitations on the present invention.

[0044] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simply understood that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", and "parallel", and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the solution of the present utility model.

[0045] In addition, the expressions “first”, “second”, “third”, etc. in the terms are merely used to distinguish the description of the same or similar components, and should not be understood as emphasizing or implying the relative importance of specific components.

[0046] In addition, in the description of the embodiments of the present invention, "several", "a plurality", and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0047] Furthermore, in the description of the technical solutions of this utility model, unless otherwise expressly specified / defined / restricted, the terms "disposed," "installed," "connected," "connected," "provided with," "laid," and "arranged" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections. They may be welding, riveting, bolting, threading, or other commonly used connection methods in the art. Such connections may be mechanical, electrical, or communication connections; they may be direct connections, indirect connections through an intermediate medium, or internal connections between two components.

[0048] Example 1

[0049] See also Figure 1-6 The present embodiment provides a rock hammer, comprising a detachably connected hammer body 1 and a hammer head 2, wherein a joint piece 11 extends from the head of the hammer body 1, and a first through-hole 12 is provided on the joint piece 11; a connecting groove 21 is provided on the hammer head 2, which is engaged with the connecting groove 21, and a second through-hole 22 is provided through the connecting groove 21, and the second through-hole 22 is coaxially arranged with the first through-hole 12; and a pin shaft 3 is further provided, which cooperates with the first through-hole 12 and the second through-hole 22 and is fixedly connected to the hammer head 2.

[0050] The hammer body 1 refers to the hammer body component of the rock hammer, and the hammer head 2 is connected to one end of the hammer body 1, which is used to collide with the rock first during rock drilling construction; in normal use, the rock hammer uses its own gravity to hit the rock downward, and the hammer head 2 is located below the hammer body 1, or connected to the lower part of the hammer body 1.

[0051] The head and tail of the hammer body 1 are arranged opposite to each other, respectively referring to the two ends of the length direction where the hammer body 1 is relatively larger. A joint piece 11 is protrudingly provided on the end surface of the head of the hammer body 1. The size of the joint piece 11 is smaller than that of the head of the hammer body 1, similar to a protruding connecting tongue; a connecting groove 21 is correspondingly provided on the hammer head 2, which is engaged with the connecting piece 11. The inner wall size of the connecting groove 21 is close to the outer wall size of the connecting piece 11, so that the connecting piece 11 and the connecting groove 21 can be closely attached to each other, reducing the gap between the hammer body 1 and the hammer head 2 when connected, thereby reducing the shaking of the hammer head 2 relative to the hammer body 1 during the rock drilling process.

[0052] The hammer body 1 and the hammer head 2 are fixedly connected by a pin shaft 3, which passes through the hammer head 2 and the joint piece 11 to achieve the clamping and fixing of the joint piece 11 and the connecting groove 21; the pin shaft 3 has the characteristics of easy installation and disassembly and replaceability. The clamping between the joint piece 11 and the connecting groove 21 can be released by removing the pin shaft 3, so that the hammer head 2 can be easily removed from the hammer body 1; in addition, the installation and disassembly process causes relatively little damage to the hammer body 1, and there is no need to repeatedly hammer the hammer body 1 or the hammer head 2, which can reduce the damage to the hammer body 1 and the quality loss caused by replacement, reduce the maintenance cost of the hammer body 1, and extend its service life.

[0053] See also Figure 4-5 The first through-hole 12 is a through-hole provided on the connector 11, and the second through-hole 22 is a through-hole provided on the hammer head 2. The second through-holes 22 are provided in pairs, and the two opposite through-holes 22 are respectively located on the two side walls of the connecting groove 21; when the connector 11 is fitted into the connecting groove 21, the first through-hole 12 and the two corresponding second through-holes 22 can be aligned so that the pin 3 can pass through at the same time.

[0054] In order to reduce the probability of the pin 3 loosening and falling out, the pin 3 can be fixedly connected to the hammer head 2, for example, by welding the side wall of the end of the pin 3 to the hammer head 2, thereby reducing the probability of the hammer head 2 falling off the hammer body 1 due to the loosening of the pin 3 during rock drilling, thereby reducing the safety risk during construction; welding can also further improve the tightness of the connection between the hammer body 1 and the hammer head 2.

[0055] By engaging the connector 11 with the connector groove 21, the connection structure between the hammer body 1 and the hammer head 2 can be buried inside the rock hammer. Compared with providing a protruding connection structure on the outer wall, hiding it inside the rock hammer can greatly reduce the probability of damage to the connection structure during rock drilling, thereby ensuring the reliability of the connection between the hammer body 1 and the hammer head 2.

[0056] Therefore, the present embodiment provides a rock hammer, in which a joint piece 11 is provided on the head of the hammer body 1, and a connecting groove 21 is correspondingly provided on the hammer head 2. The hammer head 2 can be tightly connected to the hammer body 1 through the engagement of the joint piece 11 and the connecting groove 21, which is beneficial to reducing the relative shaking between the hammer body 1 and the hammer head 2; the hammer body 1 and the hammer head 2 are fixed by a pin shaft 3, and the hammer head 2 can be conveniently replaced by installing and removing the pin shaft 3; the pin shaft 3 is fixedly connected to the hammer head 2, which can not only enhance the installation strength of the pin shaft 3, reduce the probability of the pin shaft 3 coming off, and reduce the probability of the hammer head 2 falling off during construction, which is beneficial to construction safety, but also further enhance the tightness of the connection between the hammer body 1 and the hammer head 2.

[0057] In some embodiments, the same pin shaft 3 is passed through the coaxially arranged first through-hole 12 and second through-hole 22 , the side wall of the second through-hole 22 facing outward is provided with a connecting groove 23 , and a weld is provided between the outer wall of the pin shaft 3 and the connecting groove 23 .

[0058] A connecting groove 23 is provided on the outward end of the second through-hole 22. The connecting groove 23 is annularly located on the side wall of the end of the second through-hole 22. The surface of the connecting groove 23 is an inclined plane inclined relative to the axis of the second through-hole 22. The angle between the connecting groove 23 and the axis of the second through-hole 22 can be 50-70°; when the pin 3 is installed in place, an annular gap is provided between the connecting groove 23 and the side wall of the end of the pin 3. The pin 3 and the hammer head 2 can be connected by welding at this gap position, thereby reducing the probability of the pin 3 loosening and falling out.

[0059] The end of the pin 3 can also be provided with a groove symmetrical to the connecting groove 23 to increase the connection strength between the weld and the pin 3. Figure 1 As shown; the pin 3 and the hammer 2 can be made of the same material, such as 20CrNiMO.

[0060] In some embodiments, the side wall of the head of the hammer body 1 is provided with a first butt groove 13, and the side wall of the tail of the hammer head 2 is provided with a second butt groove 25 corresponding to the first butt groove 13, and a weld is provided between the first butt groove 13 and the second butt groove 25.

[0061] See also Figure 1The surface of the first butt groove 13 is an inclined surface inclined relative to the butt surface of the hammer body 1 and the hammer head 2, and the inclination angle can be 50-70 degrees; the surface of the second butt groove 25 is also an inclined surface inclined relative to the butt surface of the hammer body 1 and the hammer head 2, and the inclination angle can be 50-70 degrees; a conical groove concave relative to the side walls of the hammer body 1 and the hammer head 2 can be formed between the first butt groove 13 and the second butt groove 25, and the hammer body 1 and the hammer head 2 can be connected by butt welding in the conical groove to reduce the relative shaking of the hammer body 1 and the hammer head 2, which is conducive to improving the stability and accuracy of the hammer head 2 in rock drilling; by setting the butt groove, the cross-sectional area of ​​the weld can be increased, thereby improving the bearing capacity and durability of the welding, further ensuring that the rock hammer is sturdy and reliable during use, preventing it from falling off during construction, and reducing the maintenance workload.

[0062] The first butt groove 13 and the second butt groove 25 can be arranged around the side wall of the hammer body 1 in a complete circle; in a preferred embodiment, the hammer body 1 is made of 16Mn [Q345] material, and the hammer head 2 is made of 20CrNiMO material. The first butt groove 13 and the second butt groove 25 can be butt-welded using J507 arc welding [p3.2-p4.0mm], with a weld width of 120mm and a groove angle of 60°.

[0063] In some embodiments, the hammer head 2 is provided with an axe-shaped hammer tip 4 , the width of the hammer tip 4 decreases in a direction away from the tail of the hammer head 2 , and the head of the hammer tip 4 has an arc-shaped chamfer.

[0064] See also Figure 1-3 5. The head of the hammer head 2 is provided with a hammer tip 4. The hammer tip 4 is an axe-shaped structure with a relatively large length. In the cross section of the hammer tip 4, the width of the hammer tip 4 decreases in the direction away from the tail of the hammer head 2 to form a cutting edge, which is convenient for the hammer head 2 to hit and crush the rock when drilling. The cross section of the hammer tip 4 is designed to be roughly trapezoidal, and its head has an arc chamfer to enhance the strength and toughness of the head.

[0065] In some embodiments, the outer surface of the hammer head 2 is provided with a first wear-resistant layer 24 , and the first wear-resistant layer 24 includes a plurality of wear-resistant strips in a grid shape.

[0066] The wear-resistant strip can be welded with wear-resistant welding wire material. The hardness after treatment can reach 42-63HRC [Rockwell hardness], which is basically about 3 times that of conventional 45# steel. It can increase the wear degree of the hammer tip 4. At the same time, the quenching and tempering heat treatment process is adopted. While improving the strength of the hammer tip 4, it can also maintain good toughness, further improve the wear resistance of the hammer tip 4, reduce maintenance time, and improve construction efficiency.

[0067] In this embodiment, the wear strips are designed to be 15 mm wide, arranged in a grid pattern, with a spacing of 100 mm and a thickness of 6 mm. A similar wear-resistant layer can also be provided on the outer surface of the hammer body 1.

[0068] In some embodiments, the hammer body 1 includes a raised section 15 and a transition section 16. The transition section 16 is located on the side of the raised section 15 close to the hammer head 2. The outer surfaces of the raised section 15 and the transition section 16 are continuously streamlined, and the size of the transition section 16 in at least one direction decreases toward the direction close to the hammer head 2.

[0069] The hammer body 1 can be made of 16Mn [Q345] material and is manufactured through a normalizing and tempering heat treatment process. It is designed to be in a "teardrop" shape and the waist is designed to be streamlined with an arc, so as to reduce resistance when the rock hammer enters the water and increase the impact energy; in at least one direction, the size of the raised section 15 is larger than that of other sections on the hammer body 1. The larger size of the raised section 15 can break the water surface when entering the water. The outer surfaces of the raised section 15 and the transition section 16 are designed to be streamlined, which can minimize the water entry resistance and increase the impact energy.

[0070] A connecting section 17 may be provided on a side of the protruding section 15 away from the hammer head 2 , and a dimension of the connecting section 17 in at least one direction may gradually decrease in a direction away from the protruding section 15 .

[0071] In some embodiments, the outer surface of the transition section 16 is provided with a second wear-resistant layer 14 , which includes a plurality of wear-resistant strips in a grid shape. The second wear-resistant layer 14 can be manufactured in the same manner as the first wear-resistant layer 24 .

[0072] The overall weight of the rock hammer described in this embodiment is designed to be large, weighing about 35 tons, which effectively increases the rock breaking impact force, expands the rock breaking range, and improves construction efficiency.

[0073] Example 2

[0074] A rock hammer provided in this embodiment includes a hammer body 1, a lifting hole 5 is provided at the tail of the hammer body 1, and the lifting hole 5 includes a first hole section 51 with an arc-shaped axis, and: the arc of the axis of the first hole section 51 is [1, π], and the two openings of the first hole section 51 are respectively located on opposite sides of the hammer body 1.

[0075] See also Figure 2-3 The lifting hole 5 is a through-hole structure, which is arranged at the tail of the hammer body 1 and is used to connect the lifting rope 6; the lifting rope 6 can pass through the lifting hole 5, and the two ends of the lifting rope 6 are connected to the lifting device 7 and other components, so that the rock hammer can be lifted by the lifting rope 6.

[0076] The arc of the axis of the first hole segment 51 is greater than or equal to 1 rad and less than or equal to π rad.

[0077] The hoisting hole of the existing rock hammer is usually a short hole with a short axis length, such as Figure 2In the hanging hole 53, since the distance between the lifting ropes on both sides of the lifting hole is relatively close, the rock hammer is prone to rotation during the lifting, hovering and falling processes of rock drilling, resulting in deviation from the construction positioning. In order to better stabilize the rock hammer and improve construction safety and rock breaking efficiency, the hanging hole 5 in this embodiment is designed as an arc-shaped through-hole structure, and the arc of the axis of the first hole section 51 is [1, π], so that there is sufficient spacing between the lifting ropes 6 outside the two ends of the hanging hole 5. The rock hammer can remain relatively stable under the restoring action of the lifting rope 6, thereby reducing the rotation phenomenon.

[0078] The arc-shaped first hole section 51 has no or fewer corners, and the arc transition can reduce the bending of the suspension rope 6 and reduce the probability of the suspension rope 6 being broken due to excessive local force.

[0079] The present embodiment provides a rock hammer in which a first hole section 51 with an arc-shaped axis is provided at the tail end of the hammer body 1. This allows the two ends of the suspension rope 6 passing through the first hole section 51 to be spaced apart from each other, thereby reducing the probability of the rock hammer rotating during use and causing deviation from the construction positioning, thereby better stabilizing the suspended rock hammer, ensuring safety, and further improving rock breaking efficiency.

[0080] In some embodiments, the hanging hole 5 further includes a second hole segment 52 . The two second hole segments 52 are respectively connected to the openings on both sides of the first hole segment 51 . The second hole segment 52 is away from the opening of the first hole segment 51 and faces away from the head of the hammer body 1 .

[0081] The second hole section 52 is connected to the first hole section 51. The second hole section 52 has a certain length for accommodating the lifting rope 6, further improving the recovery effect of the lifting rope 6. When the rock hammer rotates, the lifting ropes 6 on both sides are entangled with each other, and the lifting ropes 6 abut against the side walls of the second hole section 52. The side walls of the second hole section 52 exert a reverse force on the lifting ropes 6, so that the lifting ropes 6 return to the separated state, and the rock hammer can maintain a stable position.

[0082] In a preferred embodiment, protective sleeves 54 are provided on both sides of the tail of the hammer body 1, and a groove is provided on the side wall of the hammer body 1, and the protective sleeve 54 and the groove are enclosed to form a second hole section 52, such as Figure 6 shown.

[0083] In some embodiments, the hammer body 1 is a plane-symmetrical structure, with both sides of the hammer body 1 being plane-symmetrical along the central axis, and the first hole section 51 being plane-symmetrical along the central axis of the hammer body 1 .

[0084] In some embodiments, the axes of the two second hole segments 52 are parallel to each other; the axes of the two second hole segments 52 are parallel to the mid-axis plane.

[0085] Example 3

[0086] This embodiment provides a rock hammer, based on the rock hammers described in Examples 1 and 2, comprising a detachably connected hammer body 1 and hammer head 2. A joint member 11 extends from the head of the hammer body 1, and a corresponding connection slot 21 is provided on the hammer head 2, which engages with the joint member 11. A pin 3 passes through the joint member 11 and the connection slot 21, and the side wall of at least one end of the pin 3 is welded to the hammer head 2. Furthermore, a hanging hole 5 is provided at the tail end of the hammer body 1. The hanging hole 5 includes a first hole section 51 with an arc-shaped axis. The arc of the axis of the first hole section 51 is [1, π]. The two openings of the first hole section 51 are located on opposite sides of the hammer body 1. The hanging hole 5 also includes two second hole sections 52, which are connected to the two ends of the first hole section 51, respectively. The second hole sections 52 are away from the opening of the first hole section 51 and face away from the head of the hammer body 1.

[0087] Example 4

[0088] See also Figure 7 This embodiment provides a rock drilling system, comprising a lifting rope 6, a lifting device 7 and a rock hammer as described in Example 2 or 3, wherein: the lifting rope 6 passes through the lifting hole 5, and the parts of the lifting rope 6 on both sides of the lifting hole 5 are connected to the lifting device 7.

[0089] The suspension rope 6 can be a steel wire rope, and the lifting device 7 can be a tower crane, etc. By using the above-described rock hammer, the probability of the rock hammer rotating during use and thus deviating from its working position can be reduced, thereby better stabilizing the suspended rock hammer, ensuring safety, and further improving rock breaking efficiency. The installation and removal of the pin shaft 3 facilitates the replacement of the hammer head 2; at least one end of the pin shaft 3 is welded to the hammer head 2, which can enhance the installation strength of the pin shaft 3 and reduce the probability of the pin shaft 3 being dislodged, thereby reducing the probability of the hammer head 2 falling off during construction, thereby promoting construction safety.

[0090] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rock hammer, characterized in that: include: A hammer body (1), a joint piece (11) extending from the head of the hammer body (1), and a first through hole (12) provided on the joint piece (11); A hammer head (2), wherein a connecting groove (21) is provided on the hammer head (2), wherein the connecting groove (21) is engaged with the connecting member (11), and a second through hole (22) is provided through the connecting groove (21), wherein the second through hole (22) is coaxially arranged with the first through hole (12); The pin (3) matches the first through hole (12) and the second through hole (22), and is fixedly connected to the hammer head (2).

2. The jack hammer according to claim 1, wherein: The same pin shaft (3) is passed through a first through hole (12) and a second through hole (22) that are coaxially arranged. A connecting groove (23) is provided on the side wall of the second through hole (22) facing outward, and a weld is provided between the outer wall of the pin shaft (3) and the connecting groove (23).

3. The jack hammer according to claim 1, wherein: The side wall of the head of the hammer body (1) is provided with a first butt joint groove (13), and the side wall of the tail of the hammer head (2) is provided with a second butt joint groove (25) corresponding to the first butt joint groove (13), and a weld is provided between the first butt joint groove (13) and the second butt joint groove (25).

4. The jack hammer according to claim 1, wherein: The hammer head (2) is provided with an axe-shaped hammer tip (4), the width of the hammer tip (4) decreases in a direction away from the tail of the hammer head (2), and the head of the hammer tip (4) has an arc-shaped chamfer; and / or, The outer surface of the hammer head (2) is provided with a first wear-resistant layer (24), and the first wear-resistant layer (24) comprises a plurality of wear-resistant strips in a grid shape.

5. The jack hammer according to claim 1, wherein: The hammer body (1) comprises a raised section (15) and a transition section (16), wherein the transition section (16) is located on a side of the raised section (15) close to the hammer head (2), and the outer surfaces of the raised section (15) and the transition section (16) are continuously streamlined, and the size of the transition section (16) in at least one direction decreases toward the direction close to the hammer head (2).

6. The jack hammer according to claim 5, characterized in that The outer surface of the transition section (16) is provided with a second wear-resistant layer (14), and the second wear-resistant layer (14) comprises a plurality of wear-resistant strips in a grid shape.

7. The jack hammer according to any one of claims 1 to 6, characterized in that: The tail of the hammer body (1) is provided with a hanging hole (5), and the hanging hole (5) includes a first hole section (51) with an arc-shaped axis, and: the arc of the axis of the first hole section (51) is [1, π], and the two openings of the first hole section (51) are respectively located on two opposite sides of the hammer body (1).

8. The jack hammer according to claim 7, wherein: The hanging hole (5) further comprises two second hole sections (52), the two second hole sections (52) being respectively connected to the two ends of the first hole section (51), and the second hole sections (52) being away from the opening of the first hole section (51) and facing away from the head of the hammer body (1).

9. The jack hammer according to claim 8, wherein: The axes of the two second hole sections (52) are parallel to each other, and the first hole section (51) is symmetrical along the central axis of the hammer body (1).

10. A rock drilling system, characterized in that: The invention comprises a lifting rope (6), a lifting device (7) and a rock hammer according to any one of claims 7 to 9, wherein the lifting rope (6) passes through the lifting hole (5), and the parts of the lifting rope (6) located on both sides of the lifting hole (5) are connected to the lifting device (7).

Images