Track crane combined with pneumatic down-the-hole hammer drilling equipment and drilling method

Abstract

A crawler crane combined with a pneumatic down-the-hole hammer drilling and hole-forming device and a drilling method, which relate to the field of construction machinery. The crawler crane combined with the pneumatic down-the-hole hammer drilling and hole-forming device includes a telescopic boom crawler crane, a gooseneck connecting frame connected to the telescopic boom of the telescopic boom crawler crane, a mast connected to the gooseneck connecting frame, a power head device installed on the mast and movable along the mast, and a rotating rod connected to the top of the power head device. The telescopic boom crawler crane is connected with a lifting device for lifting the power head device. The bottom of the rotating rod is connected with a pneumatic down-the-hole hammer, and the bottom of the pneumatic down-the-hole hammer is connected with a drill bit. The crawler crane combined with the pneumatic down-the-hole hammer drilling and hole-forming device and the drilling method provided by this application combine the telescopic boom crawler crane and the pneumatic down-the-hole hammer construction method. Not only can it meet the requirements of down-the-hole hammer construction, but it can also be constructed in complex and narrow sites, greatly reducing the construction difficulty of complex geological conditions.

Description

Technical Field

[0001] This application relates to the field of construction machinery. Specifically, it relates to a crawler crane combined with a pneumatic down-the-hole hammer drilling and hole-forming device and a drilling method. Background Technique

[0002] In the construction operation of drilling and hole-forming in hard rock formations, in order to meet the bearing capacity requirements, the foundation piles are required to be embedded below the fresh bedrock surface. Traditional drilling rigs have disadvantages such as low work efficiency, slow footage, rapid wear of drill tools, easy fracture of drill pipes, and poor reliability when drilling and hole-forming in such hard rock formations. In order to improve the drilling efficiency, pneumatic down-the-hole hammers are usually used for drilling construction in hard rock formations.

[0003] When the pneumatic down-the-hole hammer operates, the compressor provides compressed air to drive the impactor, making the impact piston inside the impactor reciprocate at a high frequency to generate impact force. Then, the impact force is transmitted to the rock formation through the drill bit. At the same time, the power head on the machine is used to apply appropriate drilling pressure and rotary drilling to the pneumatic down-the-hole hammer. The pneumatic down-the-hole hammer can both grind and crush the rock, and make the impact position of the down-the-hole hammer change continuously, so that the alloy protruding points at the bottom of the down-the-hole hammer hit different positions each time, thus achieving the effect of quickly breaking the rock. At the same time, the compressed air discharged by the pneumatic down-the-hole hammer can not only cool the drill bit but also blow the broken rock chips away from the bottom of the hole and discharge them out of the hole, thus achieving the purpose of down-the-hole impact rotary drilling.

[0004] In China, large three-point pile frames, walking pile frames, and rotary drilling rigs are generally selected as the mother machines for pneumatic down-the-hole hammers and are widely used in relatively open and flat sites. However, in many mountainous areas with hard rock formations, the site conditions are relatively complex. Large pile machines or rotary drilling rigs are too large in equipment and high in mast to reach the construction site at all.

[0005] Therefore, a pneumatic down-the-hole hammer drilling construction device and a drilling method that can adapt to narrow hard rock sites are needed to meet the requirements. Summary of the Invention

[0006] The purpose of this application is to provide a crawler crane combined with a pneumatic down-the-hole hammer drilling and hole-forming device and a drilling method, which can meet the requirements of down-the-hole hammer construction and can also be constructed in complex and narrow sites, greatly reducing the construction difficulty of complex geological conditions.

[0007] The embodiments of this application are implemented as follows:

[0008] An embodiment of the present application provides a crawler crane combined with a pneumatic down-the-hole hammer drilling and hole-forming device, which includes a telescopic boom crawler crane, a gooseneck connecting frame connected to the telescopic boom of the telescopic boom crawler crane, a mast connected to the gooseneck connecting frame, a power head device installed on the mast and movable along the mast, and a rotating rod connected to the top of the power head device. The telescopic boom crawler crane is connected with a lifting device for lifting the power head device. The bottom of the rotating rod is connected with a pneumatic down-the-hole hammer, and the bottom of the pneumatic down-the-hole hammer is connected with a drill bit.

[0009] In some optional embodiments, the gooseneck connecting frame is connected with an upper slewing connecting frame, the upper slewing connecting frame is connected with a lower slewing connecting frame that can rotate horizontally through a thrust bearing, and the top of the mast is connected with the lower slewing connecting frame.

[0010] In some optional embodiments, the lifting device includes a first hoisting winch provided on the telescopic boom crawler crane. The power head device is connected with a movable pulley block. The upper slewing connecting frame is provided with a first fixed pulley, and the lower slewing connecting frame is provided with a second fixed pulley. The first hoisting winch is connected with a first hoisting steel wire rope. The first hoisting steel wire rope is wound around the first fixed pulley, the second fixed pulley and the movable pulley block in sequence and then connected to the lower slewing connecting frame.

[0011] In some optional embodiments, the telescopic boom crawler crane is provided with a second hoisting winch, the lower slewing connecting frame is provided with a third fixed pulley, the second hoisting winch is connected with a second hoisting steel wire rope, and the second hoisting steel wire rope is wound around the first fixed pulley and the third fixed pulley in sequence and then connected with a hook.

[0012] In some optional embodiments, the power head device includes a connecting seat connected to the rotating rod and a hydraulic motor for driving the connecting seat to rotate. The connecting seat is provided with a gas circuit interface, and the rotating rod is provided with a gas circuit for delivering the gas in the gas circuit interface to the pneumatic down-the-hole hammer.

[0013] In some optional embodiments, the connecting seat is connected with a sliding seat, the sliding seat is connected with at least a pair of oppositely arranged guiding rollers, the mast is provided with guiding columns extending along its length direction, and each pair of guiding rollers rolls against both sides of the guiding column.

[0014] In some optional embodiments, the mast is a box structure welded by four guiding tubes and four webs, and at least one web is provided with a plurality of weight-reducing holes.

[0015] In some optional embodiments, the mast is connected with a clamping device for radially fixing the rotating rod.

[0016] This embodiment also provides a method for drilling with a crawler crane combined with a pneumatic down-the-hole hammer, which is carried out by using the above-mentioned crawler crane combined with a pneumatic down-the-hole hammer drilling and hole-forming device, and includes the following steps:

[0017] Use the telescopic boom of the telescopic boom crawler crane to lift the mast through the gooseneck connection frame and move it to the drilling area. At the same time, use the lifting device connected to the telescopic boom crawler crane to lift the power head device, rotary rod, pneumatic down-the-hole hammer and drill bit and move them to the drilling area along with the mast.

[0018] Fix the mast, then use the lifting device to lower the power head device, rotary rod, pneumatic down-the-hole hammer and drill bit. Use the power head device to drive the rotary rod, pneumatic down-the-hole hammer and drill bit to rotate, and control the pneumatic down-the-hole hammer to drive the drill bit to drill into the drilling area.

[0019] The beneficial effects of this application are as follows: The crawler crane combined with pneumatic down-the-hole hammer drilling and hole-forming equipment provided in this embodiment includes a telescopic boom crawler crane, a gooseneck connection frame connected to the telescopic boom of the telescopic boom crawler crane, a mast connected to the gooseneck connection frame, a power head device installed on the mast and movable along the mast, and a rotary rod whose top is connected to the power head device. The telescopic boom crawler crane is connected with a lifting device for lifting and lowering the power head device. The bottom of the rotary rod is connected with a pneumatic down-the-hole hammer, and the bottom of the pneumatic down-the-hole hammer is connected with a drill bit. The crawler crane combined with pneumatic down-the-hole hammer drilling and hole-forming equipment and the drilling method provided in this embodiment combine the telescopic boom crawler crane and the pneumatic down-the-hole hammer construction method. It can not only meet the requirements of down-the-hole hammer construction, but also can be constructed in complex and narrow sites, greatly reducing the construction difficulty of complex geological conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of this application, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of this application, so they should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of the crawler crane combined with pneumatic down-the-hole hammer drilling and hole-forming equipment provided by the embodiment of this application;

[0022] Figure 2 It is a partial structural schematic diagram of the crawler crane combined with pneumatic down-the-hole hammer drilling and hole-forming equipment provided by the embodiment of this application;

[0023] Figure 3 It is a schematic structural diagram of the power head device of the crawler crane combined with pneumatic down-the-hole hammer drilling and hole-forming equipment provided by the embodiment of this application from the first perspective;

[0024] Figure 4 It is a schematic structural diagram of the power head device of the crawler crane combined with pneumatic down-the-hole hammer drilling and hole-forming equipment provided by the embodiment of this application from the second perspective;

[0025] Figure 5 Schematic diagram of the structure when the crawler crane combined with pneumatic down-the-hole hammer drilling and hole-forming equipment of the present application conducts drilling operations across buildings;

[0026] Figure 6 Schematic diagram of the structure when the crawler crane combined with pneumatic down-the-hole hammer drilling and hole-forming equipment of the present application conducts drilling operations on the slope top;

[0027] Figure 7 Schematic diagram of the structure when the crawler crane combined with pneumatic down-the-hole hammer drilling and hole-forming equipment of the present application conducts drilling operations on the slope bottom.

[0028] In the figure: 100, telescopic boom crawler crane; 110, telescopic boom; 120, gooseneck connection frame; 130, mast; 131, guide column; 132, guide pipe; 133, web; 134, weight reduction hole; 140, power head device; 141, connection seat; 142, hydraulic motor; 143, gas circuit interface; 144, sliding seat; 145, guide roller; 146, bearing box; 150, rotating rod; 160, pneumatic down-the-hole hammer; 170, drill bit; 180, upper rotary connection frame; 190, thrust bearing; 200, lower rotary connection frame; 210, first hoisting winch; 220, movable pulley block; 230, first fixed pulley; 240, second fixed pulley; 250, first hoisting steel wire rope; 260, second hoisting winch; 270, third fixed pulley; 280, second hoisting steel wire rope; 290, hook; 300, clamping device; 310, fourth fixed pulley; 320, air compressor; 330, air pipe; 340, oil pipe; 350, dust cover; 360, fifth fixed pulley; 370, sixth fixed pulley. Detailed implementation manners

[0029] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. Generally, the components of the embodiments of the present application described and illustrated herein can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0031] It should be noted that like reference numerals and letters refer to like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0033] In addition, terms such as "horizontal", "vertical", "hanging" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0034] In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "install", "connect", "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0035] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but are in contact through other features between them. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0036] The features and performance of the crawler crane combined pneumatic down-the-hole hammer drilling rig and the drilling method of the present application will be further described in detail below in conjunction with the embodiments.

[0037] Such as Figure 1 、Figure 2 , Figure 3 and Figure 4 As shown in Figure 2 , Figure 3 and Figure 4 , an embodiment of the present application provides a crawler crane combined with a pneumatic down-the-hole hammer drilling and hole-forming device, which includes a telescopic boom crawler crane 100, a gooseneck connecting frame 120 connected to the telescopic boom 110 of the telescopic boom crawler crane 100, a mast 130 connected to the gooseneck connecting frame 120, a power head device 140 installed on the mast 130 and movable along the mast 130, a lifting device for lifting the power head device 140, and a rotating rod 150 with the top connected to the power head device 140. A pneumatic down-the-hole hammer 160 is connected to the bottom of the rotating rod 150, and a drill bit 170 is connected to the bottom of the pneumatic down-the-hole hammer 160.

[0038] Among them, the gooseneck connecting frame 120 is hinged with an upper slewing connecting frame 180 that can rotate in a vertical plane. The upper slewing connecting frame 180 is connected with a lower slewing connecting frame 200 that can rotate in a horizontal plane through a thrust bearing 190. The top of the mast 130 is connected to the lower slewing connecting frame 200. The lifting device includes a first hoisting winch 210 and a second hoisting winch 260 fixed on the telescopic boom crawler crane 100. The power head device 140 is connected with a movable pulley block 220. The gooseneck connecting frame 120 is connected with a fixed pulley block. The upper slewing connecting frame 180 is provided with a first fixed pulley 230. The lower slewing connecting frame 200 is provided with a second fixed pulley 240, a third fixed pulley 270 and a fourth fixed pulley 310. The first hoisting winch 210 is connected with a first hoisting steel wire rope 250. The first hoisting steel wire rope 250 is sequentially wound around the fixed pulley block, the first fixed pulley 230, the fourth fixed pulley 310, the second fixed pulley 240 and the movable pulley block 220 and then connected to the lower slewing connecting frame 200. The second hoisting winch 260 is connected with a second hoisting steel wire rope 280. The second hoisting steel wire rope 280 is sequentially wound around the fixed pulley block, the first fixed pulley 230, the fourth fixed pulley 310, the third fixed pulley 270 and then connected with a hook 290. The lower slewing connecting frame 200 is also respectively connected with a fifth fixed pulley 360 and a sixth fixed pulley 370 that are symmetrically arranged with the second fixed pulley 240 and the fourth fixed pulley 310.

[0039] The power head device 140 includes a connecting seat 141 connected to the rotating rod 150 and a hydraulic motor 142 for driving the connecting seat 141 to rotate. The hydraulic motor 142 is connected to the connecting seat 141 through a bearing housing 146. The telescopic boom crawler crane 100 is provided with a hydraulic system, and the hydraulic system is connected to the hydraulic motor 142 through a hydraulic pipe 340. The connecting seat 141 is provided with an air circuit interface 143, and the rotating rod 150 is provided with an air circuit for delivering the air in the air circuit interface 143 to the pneumatic down-the-hole hammer 160. The air circuit interface 143 is connected to an air compressor 320 through an air pipe 330; The connecting seat 141 is connected with a sliding seat 144, and the sliding seat 144 is connected with four pairs of oppositely arranged guiding rollers 145. The connecting seat 141 is connected with a dust-proof cover 350 sleeved on the top of the rotating rod 150; The mast 130 is a box-shaped structure formed by welding four guiding pipes 132 and four webs 133. A guiding column 131 extending along its length direction is provided on the web 133 on the side of the mast 130 facing the rotating rod 150. Each pair of guiding rollers 145 rolls against both sides of the guiding column 131. Fifty weight-reducing holes 134 are opened on the two oppositely arranged webs 133 of the mast 130 on both sides of the rotating rod 150. The bottom of the mast 130 is connected with a clamping device 300 for radially fixing the rotating rod 150.

[0040] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 shown, this embodiment also provides a method for the combined pneumatic down-the-hole hammer drilling of a crawler crane, which is carried out by using the above-mentioned crawler crane combined pneumatic down-the-hole hammer drilling and hole-forming equipment, and includes the following steps:

[0041] Use the telescopic boom 110 of the telescopic boom crawler crane 100 to lift the mast 130 to move to the drilling area through the gooseneck connecting frame 120. At the same time, use the lifting device connected to the telescopic boom crawler crane 100 to lift the power head device 140, the rotating rod 150, the pneumatic down-the-hole hammer 160 and the drill bit 170 to move to the drilling area along with the mast 130;

[0042] Fix the mast 130 to the ground in the drilling area, and then use the lifting device to lower the power head device 140, the rotating rod 150, the pneumatic down-the-hole hammer 160 and the drill bit 170. Use the power head device 140 to drive the rotating rod 150, the pneumatic down-the-hole hammer 160 and the drill bit 170 to rotate, and control the pneumatic down-the-hole hammer 160 to drive the drill bit 170 to drill the ground in the drilling area.

[0043] The hole-forming equipment for combined pneumatic down-the-hole hammer drilling of the crawler crane provided in this embodiment combines the telescopic boom crawler crane 100 and the pneumatic down-the-hole hammer 160. The telescopic boom 110 of the telescopic boom crawler crane 100 is used to connect the gooseneck connecting frame 120, and the gooseneck connecting frame 120 is used to hinge the upper slewing connecting frame 180 that can rotate in the vertical plane and the upper slewing connecting frame 180 is used to connect the lower slewing connecting frame 200 that can rotate in the horizontal plane through a thrust bearing 190. The lower slewing connecting frame 200 is connected with a power head device 140 for driving the rotating rod 150 to rotate, and the drill bit 170 is connected to the bottom of the rotating rod 150 through the pneumatic down-the-hole hammer 160. Therefore, by using the compact telescopic boom 110 structure of the telescopic boom crawler crane 100, the transportation length, height and turning radius of the rotating rod 150 and the pneumatic down-the-hole hammer 160 are greatly reduced, enabling it to reach some construction areas where pile frames and rotary drilling rigs cannot reach. When arriving at the designated construction site, the telescopic boom 110 is extended and raised to an appropriate angle, and the rotating rod 150, the pneumatic down-the-hole hammer 160 and the drill bit 170 are hoisted to utilize the high-efficiency rock-breaking drilling ability of the pneumatic down-the-hole hammer 160. It can not only meet the requirements of the construction of the pneumatic down-the-hole hammer 160, but also can carry out construction in complex and narrow sites, greatly reducing the construction difficulty of complex geological conditions.

[0044] Among them, the upper slewing connecting frame 180 that can rotate in the vertical plane is hinged by the gooseneck connecting frame 120, and the lower slewing connecting frame 200 that can rotate in the horizontal plane is connected by the upper slewing connecting frame 180 through a thrust bearing 190, which can facilitate the operator to adjust the connection angle between the gooseneck connecting frame 120 and the upper slewing connecting frame 180 in the vertical plane, and adjust the horizontal angle between the upper slewing connecting frame 180 and the lower slewing connecting frame 200. At the same time, the power head device 140 is used to drive the rotating rod 150, the pneumatic down-the-hole hammer 160 and the drill bit 170 to rotate and drill downward. At the same time, the pressure of the power head device 140, the rotating rod 150 and the pneumatic down-the-hole hammer 160 will also press down the drill bit 170 to promote the progress of the drilling operation.

[0045] The telescopic boom crawler crane 100 is provided with a first hoisting winch 210. The first hoisting winch 210 is connected with a first hoisting wire rope 250. The first hoisting wire rope 250 is sequentially wound around a fixed pulley block, a first fixed pulley 230, a fourth fixed pulley 310, a second fixed pulley 240 and a movable pulley block 220 and then connected to the lower slewing connecting frame 200. Operators can control the first hoisting winch 210 to wind in or pay out the first hoisting wire rope 250 to lift or lower the movable pulley block 220 and the power head device 140, the rotary rod 150, the pneumatic down-the-hole hammer 160 and the drill bit 170 connected thereto, so as to control the progress of the drilling process. At the same time, the telescopic boom crawler crane 100 is provided with a second hoisting winch 260. The second hoisting winch 260 is connected with a second hoisting wire rope 280. The second hoisting wire rope 280 is sequentially wound around the fixed pulley block, the first fixed pulley 230, the fourth fixed pulley 310, a third fixed pulley 270 and then connected with a hook 290. Operators can control the second hoisting winch 260 to wind in or pay out the second hoisting wire rope 280 to lift or lower the hook 290, so as to use the hook 290 for auxiliary hoisting operations. The lower slewing connecting frame 200 is further respectively connected with a fifth fixed pulley 360 and a sixth fixed pulley 370 which are symmetrically arranged with the second fixed pulley 240 and the fourth fixed pulley 310. When it is necessary to adjust the orientations of the power head device 140, the rotary rod 150, the pneumatic down-the-hole hammer 160 and the drill bit 170 relative to the mast 130, the fifth fixed pulley 360 and the sixth fixed pulley 370 can be adapted to replace the second fixed pulley 240 and the fourth fixed pulley 310 to guide the movement of the first hoisting wire rope 250 to connect and lift or lower the movable pulley block 220 and the power head device 140, the rotary rod 150, the pneumatic down-the-hole hammer 160 and the drill bit 170 connected thereto.

[0046] The connecting seat 141 is provided with an air circuit interface 143. The rotary rod 150 is provided with an air circuit for delivering the air in the air circuit interface 143 to the pneumatic down-the-hole hammer 160. The air circuit interface 143 is connected with an air compressor 320 through an air pipe. The air compressor 320 can be used to introduce compressed gas into the air circuit interface 143 through the air pipe, and further make the compressed gas be delivered to the pneumatic down-the-hole hammer 160 through the air circuit in the rotary rod 150 to drive the pneumatic down-the-hole hammer 160 to operate;

[0047] The connecting seat 141 is connected to a sliding seat 144, and the sliding seat 144 is connected to four pairs of oppositely arranged guiding rollers 145. On the web 133 of the mast 130 facing the side of the rotating rod 150, there are guiding columns 131 extending along its length direction. Each pair of guiding rollers 145 rolls and presses against both sides of the guiding column 131, enabling the power head device 140 to stably roll and press against both sides of the guiding column 131 when ascending and descending along the mast 130, ensuring that the power head device 140 stably ascends and descends along the mast 130. The connecting seat 141 is connected to a dust-proof cover 350 sleeved on the top of the rotating rod 150, which can prevent dust from entering the connection between the connecting seat 141 and the rotating rod 150 and affecting the operation. Fifty weight-reducing holes 134 are formed on the two oppositely arranged webs 133 of the mast 130 on both sides of the rotating rod 150 for reducing the weight of the web 133. The bottom of the mast 130 is connected to a clamping device 300 for radially fixing the rotating rod 150. The clamping device 300 includes two semi-annular clamping rings arranged opposite to each other. The two ends of the two clamping rings are respectively arranged opposite to each other and are detachably locked and connected through a pin shaft and a bolt.

[0048] The embodiments described above are some embodiments of the present application, rather than all embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts belong to the scope of protection of the present application.

Claims

1. A crawler crane combined with a pneumatic down-the-hole hammer drilling equipment, characterized in that: The invention relates to a telescopic crawler crane, a goose head connecting frame connected to the telescopic arm of the telescopic crawler crane, a mast connected to the goose head connecting frame, a power head device installed on the mast and moving along the mast, and a rotating rod connected to the power head device at the top. The telescopic crawler crane is connected with a lifting device for lifting the power head device. The bottom of the rotating rod is connected to a pneumatic down-the-hole hammer, and the bottom of the pneumatic down-the-hole hammer is connected to a drill bit. The goose head connecting frame is connected to an upper rotary connecting frame, and the upper rotary connecting frame is connected to a lower rotary connecting frame rotating in the horizontal direction through a thrust bearing. The top of the mast is connected to the lower rotary connecting frame. The lifting device includes a The first lifting winch on the telescopic arm crawler crane, the power head device is connected to the movable pulley group, the upper slewing connecting frame is provided with a first fixed pulley, the lower slewing connecting frame is provided with a second fixed pulley, the first lifting winch is connected to the first lifting wire rope, the first lifting wire rope is sequentially wound around the first fixed pulley, the second fixed pulley and the movable pulley group and then connected to the lower slewing connecting frame, the telescopic arm crawler crane is provided with a second lifting winch, the lower slewing connecting frame is provided with a third fixed pulley, the second lifting winch is connected to the second lifting wire rope, the second lifting wire rope is sequentially wound around the first fixed pulley and the third fixed pulley and then connected to the hook.

2. The crawler crane combined with pneumatic down-the-hole hammer drilling equipment according to claim 1 is characterized in that: The power head device includes a connecting seat connected to the rotating rod and a hydraulic motor for driving the connecting seat to rotate. The connecting seat is provided with an air circuit interface, and the rotating rod is provided with an air circuit for conveying the air in the air circuit interface to the pneumatic down-the-hole hammer.

3. The crawler crane combined with pneumatic down-the-hole hammer drilling equipment according to claim 2 is characterized in that: The connecting seat is connected to a sliding seat, and the sliding seat is connected to at least one pair of guide rollers arranged opposite to each other. The mast is provided with a guide column extending along its length direction, and each pair of guide rollers rolls and presses against both sides of the guide column.

4. The crawler crane combined with pneumatic down-the-hole hammer drilling equipment according to claim 1 is characterized in that: The mast is a box-shaped structure formed by welding four guide tubes and four webs, and at least one web is provided with a plurality of weight-reducing holes.

5. The crawler crane combined with pneumatic down-the-hole hammer drilling equipment according to claim 1 is characterized in that: The mast is connected with a clamping device for radially fixing the rotating rod.

6. A crawler crane combined with a pneumatic down-the-hole hammer drilling method, which is carried out using the crawler crane combined with a pneumatic down-the-hole hammer drilling device according to claim 1, characterized in that: The following steps are involved: The telescopic arm of the telescopic crawler crane is used to lift the mast through the goose head connecting frame and move it to the drilling area. At the same time, the lifting device connected to the telescopic crawler crane is used to lift the power head device, the rotating rod, the pneumatic down-the-hole hammer and the drill bit and move them along with the mast to the drilling area. Fix the mast, then use the lifting device to lower the power head device, the rotating rod, the pneumatic down-the-hole hammer and the drill bit, use the power head device to drive the rotating rod, the pneumatic down-the-hole hammer and the drill bit to rotate, and control the pneumatic down-the-hole hammer to drive the drill bit to drill into the drilling area.

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