A pneumatic leg rock drill

Abstract

The present invention relates to the technical field of rock drills, and specifically to an air-leg rock drill, comprising a support leg, an outer side wall of the support leg being fixedly connected with a universal shaft, an equipment body being mounted on the universal shaft, an oil pipe and a water pipe being respectively arranged on both sides of the equipment body, a cooling chamber being arranged inside the equipment body, an exhaust port being arranged inside the cooling chamber, a drill rod being slidably arranged inside the equipment body, and through the arrangement of mechanisms such as a fan, when the equipment body is started and drilling in a rock formation, the fan will blow air into the cooling chamber through the cooling pipe to cool down the tail part of the drill rod, and if the equipment body is used at high power, the fan will transport air containing cooling water into the cooling chamber through the cooling pipe, so as to meet the cooling demand of the tail part of the drill rod under high power use, and ensure that the entire equipment body will not overheat when drilling in a rock formation at high power.

Description

Technical Field

[0001] The invention relates to the technical field of rock drills, in particular to an air-leg type rock drill. Background Art

[0002] An air-leg rock drill is a type of soil or rock drilling equipment. When the air-leg rock drill is working, it relies on compressed air to push the piston to reciprocate. During the stroke, the piston hits the drill tail, and during the return stroke, the piston drives the drill to rotate to achieve the crushing and drilling of the rock or soil.

[0003] When a rock drill is drilling in a rock formation, if it encounters a relatively hard rock formation and needs to use high power to improve the drilling efficiency of the rock formation, the piston will impact the drill tail at high speed. At this time, the drill tail will generate a lot of heat. Although a cooling mechanism for the drill tail and the stroke motor is provided inside the rock drill, the cooling effect is limited. Since the tail of the drill pipe is close to the drill tail, the high temperature generated by the drill tail will still be partially transmitted to the tail of the drill pipe. If the tail of the drill pipe is not cooled separately, the tail of the drill pipe will overheat after long-term use, thereby causing the entire rock drill to overheat and affecting the rock formation drilling effect. At the same time, the existing rock drills usually lack automatic lubrication mechanisms. When the rock drill is used at high power, there will be severe friction contact between the drill tail and the rotating sleeve. If the drill tail and the rotating sleeve are not lubricated, not only will the wear of the two be accelerated, but also the friction will generate a lot of heat, causing the rock drill to overheat and affect the use of the rock drill. In addition, when the existing rock drill is operating in soft rock or soil, the piston encounters less resistance when impacting the drill tail forward, and the stroke of the piston is relatively long. When pulling out the drill, the overly soft rock formation will cause the blasthole to shrink, and the mud will wrap the drill head and the drill rod, making it difficult and time-consuming to pull out the drill. When pulling out the drill, the piston will not be able to impact the drill tail, causing the rock drill to hit empty. Summary of the invention

[0004] The purpose of the present invention is to provide a pneumatic leg rock drill to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pneumatic leg type rock drill, comprising a support leg, a universal shaft is fixedly connected to the outer side wall of the support leg, an equipment body is installed on the universal shaft, an oil pipe and a water pipe are respectively arranged on both sides of the equipment body, a cooling chamber is arranged inside the equipment body, an exhaust port is arranged inside the cooling chamber, a drill rod is slidably arranged inside the equipment body, the drill rod passes through the cooling chamber to the outside of the equipment body, a drill tail is arranged at one end of the drill rod close to the inner side of the equipment body, a rotating sleeve is installed on the drill tail, a piston is arranged inside the equipment body, a cooling sleeve is arranged on the outer side wall of the equipment body, the drill rod slides through the interior of the cooling sleeve, and an anti-air strike mechanism is arranged inside the cooling sleeve.

[0006] Preferably, the anti-air strike mechanism includes two sliding rods arranged inside the cooling sleeve, and the outer walls of the two sliding rods are slidably connected with push plates, and the push plates are rotatably connected inside with a rotating bearing, and the rotating bearing is connected to the outer wall of the drill pipe. A return spring is fixedly connected to the outer wall of the push plate, and the other end of the return spring is fixedly connected to the inner wall of the cooling sleeve, and a cooling mechanism is arranged inside the cooling sleeve.

[0007] Preferably, the cooling mechanism includes a mounting bracket arranged inside the cooling sleeve, the mounting bracket is rotatably connected to a transmission rod inside, a fan is arranged at the end of the transmission rod, the end of the transmission rod away from the fan is fixedly connected to a reciprocating screw, a driving member is threadedly sleeved on the outer wall of the reciprocating screw, tension boxes are arranged on both sides of the driving member, a pull rod is slidably connected to the inner wall of the tension box, pressure springs are fixedly connected on both sides of the pull rod, the other end of the pressure spring is fixedly connected to the inner wall of the tension box, and the end of the pull rod away from the pressure spring is connected to the push plate.

[0008] Preferably, a collar is fixedly connected to the mounting bracket, the collar is rotatably connected to the transmission rod, a liquid guide tube is provided inside the collar, a micro suction pump is provided inside the liquid guide tube, an end of the liquid guide tube away from the collar is connected to an infusion tube, an end of the infusion tube away from the liquid guide tube is connected to the inside of the water pipe, and a plurality of liquid inlet holes are provided inside the transmission rod.

[0009] Preferably, an outer box is fixedly connected to the outer wall of the fan, an inner box is arranged inside the outer box, a through hole is arranged inside the inner box, the through hole is communicated with multiple liquid inlet holes, multiple trigger boxes are arranged inside the inner box, and multiple trigger boxes all penetrate to the outside of the outer box, an inner tube is arranged inside the trigger box, a through hole is opened inside the inner tube, and the through hole is communicated to the inside of the inner box, a limiting rod is fixedly connected to the inside of the inner tube, a pressing spring is sleeved on the outer wall of the limiting rod, a blocking plate is slidably connected to the outer wall of the limiting rod, and the blocking plate is in sliding contact with the inner wall of the inner tube, a liquid outlet pipe is arranged inside the trigger box, and one end of the liquid outlet pipe close to the inner side of the trigger box is sealed, and multiple liquid through pipes are arranged inside the liquid outlet pipe, and multiple liquid through pipes all penetrate to the inside of the inner tube, a splashing hole is arranged at the open end of the liquid outlet pipe, and multiple blocking plates are arranged on the splashing hole.

[0010] Preferably, a cooling tube is provided inside the device body, an air outlet is provided inside the cooling tube, and the air outlet is connected to the inside of the cooling chamber. A rotating rod is fixedly connected to the outer wall of the outer box, and the rotating rod is located inside the cooling tube. A rotating wheel is fixedly connected to the end of the rotating rod, and a sliding rail is provided on the inner wall of the rotating wheel. A side magnet is slidably connected inside the sliding rail, and a centrifugal spring is fixedly connected to the outer wall of the side magnet, and the end of the centrifugal spring away from the side magnet is fixedly connected to the inner wall of the sliding rail.

[0011] Preferably, the interior of the cooling tube is fixedly connected to a fixing part, the exterior of the fixing part is fixedly connected to a spray barrel, the inner side wall of the spray barrel is slidably connected to a push rod, the outer side wall of the push rod is sleeved with a return spring, a trigger magnet is provided at the end of the push rod, the trigger magnet has the same magnetic pole as the side magnet, a liquid spray pipe is provided at the end of the spray barrel, and the liquid spray pipe passes through the interior of the equipment body and is located above the rotating sleeve.

[0012] Preferably, a storage box is fixedly connected to the outside of the equipment body, and a suction pipe is provided in the interior of the spray barrel, and one end of the suction pipe away from the spray barrel is connected to the interior of the storage box.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] Through the setting of mechanisms such as fans, when the main body of the equipment starts to drill in the rock formation, the fan will blow air into the cooling chamber through the cooling pipe to cool the tail part of the drill pipe. If the main body of the equipment is used at high power, the fan will transport air containing cooling water into the cooling chamber through the cooling pipe to meet the cooling demand of the tail of the drill pipe under high power use, thereby ensuring that the entire main body of the equipment will not overheat when drilling in the rock formation at high power.

[0015] Through the setting of mechanisms such as the spray gun, when the main body of the equipment is drilling in the rock formation at high power, the spray gun will automatically spray lubricant to the contact part of the drill tail and the rotating sleeve. By lubricating both, the drill tail and the rotating sleeve can be prevented from wearing due to high-speed friction, thereby extending the service life of the drill tail and the rotating sleeve. In addition, through the setting of the return spring, auxiliary rebound force can be provided when the drill rod rebounds and the drill is pulled out, so as to avoid the drill rod in the main body of the equipment from being pulled out in time when drilling in too soft rock formations, resulting in empty piston strikes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the main structure of the device of the present invention;

[0018] Figure 3 for Figure 2 A magnified view of middle;

[0019] Figure 4 It is a schematic diagram of the local structure of the present invention Figure 1 ;

[0020] Figure 5 It is a schematic diagram of the local structure of the present invention Figure 2 ;

[0021] Figure 6 for Figure 5 Enlarged view of middle B;

[0022] Figure 7 It is a schematic diagram of the structure of the runner of the present invention;

[0023] Figure 8 It is a schematic diagram of the internal planar structure of the device body of the present invention;

[0024] Fig. 9 It is a schematic diagram of the fan structure of the present invention;

[0025] Fig.10 It is a schematic diagram of the local structure of the present invention Figure 3 ;

[0026] Fig.11 It is a schematic diagram of the internal structure of the fan of the present invention;

[0027] Fig.12 The trigger box structure of the present invention is schematically shown in FIG. Figure 1 ;

[0028] Fig.13 The trigger box structure of the present invention is schematically shown in FIG. Figure 2 .

[0029] In the attached drawings, the parts represented by the various reference numerals are listed as follows: 1. Support leg; 2. Universal joint; 3. Cooling sleeve; 4. Drill rod; 5. Oil pipe; 6. Water pipe; 7. Rotating bearing; 8. Storage box; 9. Sliding rod; 10. Push plate; 11. Return spring; 12. Infusion tube; 13. Mounting bracket; 14. Driving member; 15. Reciprocating screw; 16. Tension box; 17. Pull rod; 18. Fan; 19. Liquid guide tube; 20. Cooling tube; 21. Ring; 22. Air outlet; 23. Rotating rod; 24. Slide rail; 25. Rotating wheel; 26. Return spring ; 27. Spray gun; 28. Spray pipe; 29. ​​Fixing piece; 30. Suction pipe; 31. Push rod; 32. Centrifugal spring; 33. Side magnet; 34. Spray hole; 35. Piston; 36. Brazing tail; 37. Rotating sleeve; 38. Cooling chamber; 39. Outer box; 40. Liquid inlet hole; 41. Equipment body; 42. Trigger box; 43. Through hole; 44. Inner box; 45. Pressing spring; 46. Inner tube; 47. Blocking disk; 48. Limiting rod; 49. Liquid through pipe; 50. Liquid outlet pipe; 51. Through hole; 52. Transmission rod; 53. Pressure spring. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example 1: Please refer to Figure 1 - Figure 8 A pneumatic leg type rock drill comprises a support leg 1, a universal shaft 2 is fixedly connected to the outer wall of the support leg 1, an equipment body 41 is installed on the universal shaft 2, an oil pipe 5 and a water pipe 6 are respectively arranged on both sides of the equipment body 41, a cooling chamber 38 is arranged inside the equipment body 41, an exhaust port is arranged inside the cooling chamber 38, a drill rod 4 is slidably arranged inside the equipment body 41, the drill rod 4 passes through the cooling chamber 38 to the outside of the equipment body 41, a drill tail 36 is arranged at one end of the drill rod 4 close to the inner side of the equipment body 41, a rotating sleeve 37 is installed on the drill tail 36, a piston 35 is arranged inside the equipment body 41, a cooling sleeve 3 is arranged on the outer wall of the equipment body 41, the drill rod 4 slides through the interior of the cooling sleeve 3, and an anti-air strike mechanism is arranged inside the cooling sleeve 3.

[0032] The anti-air strike mechanism includes two sliding rods 9 arranged inside the cooling sleeve 3, and a push plate 10 is slidably connected to the outer walls of the two sliding rods 9. A rotating bearing 7 is rotatably connected inside the push plate 10. The rotating bearing 7 is connected to the outer wall of the drill pipe 4. A return spring 11 is fixedly connected to the outer wall of the push plate 10, and the other end of the return spring 11 is fixedly connected to the inner wall of the cooling sleeve 3. A cooling mechanism is arranged inside the cooling sleeve 3.

[0033] The cooling mechanism includes a mounting bracket 13 arranged inside the cooling sleeve 3, and a transmission rod 52 is rotatably connected inside the mounting bracket 13, and a fan 18 is arranged at the end of the transmission rod 52, and a reciprocating screw 15 is fixedly connected to the end of the transmission rod 52 away from the fan 18, and a driving member 14 is threadedly sleeved on the outer wall of the reciprocating screw 15, and tension boxes 16 are arranged on both sides of the driving member 14, and a pull rod 17 is slidably connected to the inner wall of the tension box 16, and pressure springs 53 are fixedly connected on both sides of the pull rod 17, and the other end of the pressure spring 53 is fixedly connected to the inner wall of the tension box 16, and the end of the pull rod 17 away from the pressure spring 53 is connected to the push plate 10.

[0034] A collar 21 is fixedly connected to the mounting bracket 13, and the collar 21 is rotatably connected to the transmission rod 52. A liquid guide tube 19 is provided inside the collar 21, and a micro suction pump is provided inside the liquid guide tube 19. An end of the liquid guide tube 19 away from the collar 21 is connected to an infusion tube 12, and an end of the infusion tube 12 away from the liquid guide tube 19 is connected to the inside of the water pipe 6. A plurality of liquid inlet holes 40 are provided inside the transmission rod 52.

[0035] An outer box 39 is fixedly connected to the outer wall of the fan 18, an inner box 44 is arranged inside the outer box 39, a through hole 43 is arranged inside the inner box 44, the through hole 43 is communicated with a plurality of liquid inlet holes 40, a plurality of trigger boxes 42 are arranged inside the inner box 44, the plurality of trigger boxes 42 all penetrate to the outside of the outer box 39, an inner tube 46 is arranged inside the trigger box 42, a through hole 51 is opened inside the inner tube 46, the through hole 51 is communicated with the inside of the inner box 44, a limiting rod 48 is fixedly connected to the inside of the inner tube 46, and a limiting rod 48 is fixedly connected to the inside of the inner tube 46. A pressing spring 45 is sleeved on the outer wall of the positioning rod 48, and a blocking plate 47 is slidably connected to the outer wall of the limiting rod 48. The blocking plate 47 is in sliding contact with the inner wall of the inner tube 46. A liquid outlet pipe 50 is arranged inside the trigger box 42, and one end of the liquid outlet pipe 50 close to the inner side of the trigger box 42 is sealed. A plurality of liquid through pipes 49 are arranged inside the liquid outlet pipe 50, and the plurality of liquid through pipes 49 all penetrate into the inner tube 46. A spreading hole 34 is arranged at the open end of the liquid outlet pipe 50, and a plurality of blocking plates are arranged on the spreading hole 34.

[0036] In this embodiment, when in use, the operator can first support the entire device body 41 through the support leg 1, and then start the stroke motor inside the device body 41 to drive the piston 35 to reciprocate and hit the drill tail 36, so that the drill tail 36 drives multiple drill rods 4 to reciprocate through the rotating sleeve 37, thereby drilling in the rock layer or soil layer (this is the prior art and will not be elaborated on in detail). When the piston 35 drives the drill rod 4 to reciprocate through the drill tail 36, the drill rod 4 will drive the push plate 10 to move in the cooling sleeve 3. When the push plate 10 reciprocates, it will pull the driving member 14 in the reciprocating thread through the pull rod 17. The reciprocating screw 15 reciprocates on the rod 15. Since the reciprocating screw 15 and the driving member 14 are threadedly connected, when the driving member 14 reciprocates on the reciprocating screw 15, the reciprocating screw 15 drives the transmission rod 52 to rotate. When the transmission rod 52 rotates, it drives the fan 18 at its end to rotate synchronously to blow air. Since the fan 18 is arranged on the positive side of the cooling tube 20, when the fan 18 blows air into the cooling tube 20, the wind will enter the cooling chamber 38 through the air outlet 22, and the tail end of the drill rod 4 located in the cooling chamber 38 will be cooled by blowing air, so as to avoid the tail end of the drill rod 4 from being too high and affecting the use of the entire equipment body 41.

[0037] Example 2: Please refer to Figure 1 - Fig.13 A cooling tube 20 is arranged inside the equipment body 41, and an air outlet 22 is opened inside the cooling tube 20, and the air outlet 22 is connected to the inside of the cooling chamber 38. A rotating rod 23 is fixedly connected to the outer wall of the outer box 39, and the rotating rod 23 is located inside the cooling tube 20. A rotating wheel 25 is fixedly connected to the end of the rotating rod 23, and a slide rail 24 is opened on the inner wall of the rotating wheel 25. A side magnet 33 is slidably connected inside the slide rail 24, and a centrifugal spring 32 is fixedly connected to the outer wall of the side magnet 33, and one end of the centrifugal spring 32 away from the side magnet 33 is fixedly connected to the inner wall of the slide rail 24.

[0038] The cooling tube 20 is fixedly connected to a fixing part 29 inside, and a spray tube 27 is fixedly connected to the outside of the fixing part 29. A push rod 31 is slidably connected to the inner wall of the spray tube 27, and a return spring 26 is sleeved on the outer wall of the push rod 31. A trigger magnet is provided at the end of the push rod 31, and the magnetic poles of the trigger magnet and the side magnet 33 are the same. A spray pipe 28 is provided at the end of the spray tube 27, and the spray pipe 28 passes through the interior of the equipment body 41 and is located above the rotating sleeve 37.

[0039] The outside of the equipment body 41 is fixedly connected with a storage box 8 , and the inside of the spray cylinder 27 is connected with a suction pipe 30 , and one end of the suction pipe 30 away from the spray cylinder 27 is connected to the inside of the storage box 8 .

[0040] When the device body 41 encounters a relatively hard rock formation and requires high power, the stroke motor built into the device body 41 will increase its power, allowing the driving piston 35 to hit the contact drill tail 36 at high speed, so that the drill tail 36 drives multiple drill rods 4 to reciprocate at high speed through the rotating sleeve 37, thereby allowing the drill rods 4 to drill at high speed in the rock formation. When the multiple drill rods 4 reciprocate at high speed, the push plate 10 will pull the driving member 14 on the reciprocating screw 15 through the pull rod 17 to reciprocate rapidly. When the reciprocating frequency of the driving member 14 on the reciprocating screw 15 becomes faster, the reciprocating screw 15 will rotate rapidly. When the reciprocating screw 15 rotates rapidly, it will drive the outer box 39 to rotate synchronously. Under the action of the large centrifugal force generated by the rapid rotation of the outer box 39, the blocking plate 47 will overcome the elastic force of the pressing spring 45 and move to the left side of the trigger box 42 (refer to Fig.12 ), when the trigger box 42 rotates rapidly with the outer box 39, the water in the inner box 44 will enter the inner tube 46 through the through hole 51, and the blocking plate 47 will lose its blocking of the open end of the liquid tube 49 after moving to the left side of the trigger box 42 (refer to Fig.12 ), at this time, the water entering the inner tube 46 through the through hole 51 will enter the liquid outlet pipe 50 through the liquid passing pipe 49, and finally be thrown out of the outer box 39 through the throwing hole 34. Since a plurality of blocking plates are arranged on the throwing hole 34, when the water in the liquid outlet pipe 50 is thrown out at high speed through the throwing hole 34, it will hit the plurality of blocking plates on the throwing hole 34 and disperse into smaller droplets. The wind blown by the mixing fan 18 enters the cooling pipe 20, and finally enters the cooling chamber 38 through the air outlet 22 to cool the tail of the drill rod 4. The wind mixed with cooling water has a better cooling effect, which can meet the cooling demand of the tail of the drill rod 4 under high power use, and ensure that the entire equipment body 41 will not overheat during use.

[0041] When the fan 18 drives the outer box 39 to rotate at a high speed, the outer box 39 will drive the rotating wheel 25 to rotate rapidly through the rotating rod 23. Under the action of the large centrifugal force generated by the rapid rotation of the rotating wheel 25, the side magnet 33 will overcome the elastic force of the centrifugal spring 32 and come to the outside of the slide rail 24. When the side magnet 33 comes to the outside of the slide rail 24 and as the rotating wheel 25 intermittently rotates to the side of the trigger magnet located at the end of the push rod 31, under the combined action of the intermittent repulsive magnetic force and the elastic force of the return spring 26, the push rod 31 will perform a reciprocating suction motion in the spray barrel 27. When the push rod 31 performs a reciprocating suction motion in the spray barrel 27, the suction pipe 30 will suck the lubricant in the storage box 8 into the inside of the spray barrel 27, and finally spray it to the connection between the shank tail 36 and the rotating sleeve 37 through the spray pipe 28 (refer to Figure 8), so as to lubricate the drill tail 36 and the rotating sleeve 37, prevent the drill tail 36 and the rotating sleeve 37 from high-speed friction and wear, and extend the service life of the drill tail 36 and the rotating sleeve 37. When the drill rod 4 reciprocates, it will squeeze the return spring 11. Under the action of its own elastic force, the return spring 11 will assist the drill rod 4 to rebound, so that the drill rod 4 can be pulled out in time even when operating in soft rock or soil layer, avoiding the piston 35 from hitting empty.

[0042] It should be noted that when the transmission rod 52 rotates, it will drive the multiple liquid inlet holes 40 to rotate synchronously. When the multiple liquid inlet holes 40 rotate to coincide with the open end of the liquid guide tube 19, the water sucked by the liquid guide tube 19 will enter the through hole 43 through the liquid inlet hole 40, and finally enter the inner box 44 through the through hole 43.

[0043] It should be noted that the catheter 19 is connected to the infusion tube 12, and the infusion tube 12 is connected to the water pipe 6. When the device body 41 is started and the water pipe 6 transports flushing water into the device body 41, the micro suction pump inside the catheter 19 will suck part of the water in the water pipe 6 into the catheter 19 through the infusion tube 12.

[0044] It should be noted that since the pulling force required for the driving member 14 to move back and forth on the reciprocating screw 15 is relatively small, the pull rod 17 can pull the driving member 14 to reciprocate on the reciprocating screw 15 at any time through the elastic force of the pressure spring 53. Once the equipment body 41 is used at high power, causing the reciprocating stroke of the drill rod 4 to become longer, the corresponding pull rod 17 will pull the driving member 14 to reciprocate. The distance will also be longer accordingly. When the pull rod 17 pulls the driving member 14 to the tail end of the reciprocating screw 15, under the action of the long stroke of the drill rod 4, the pull rod 17 will press the pressure spring 53 in the tension box 16 to continue moving.

[0045] It should be noted that both the suction pipe 30 and the liquid spraying pipe 28 are provided with a one-way valve to ensure that the suction pipe 30 only draws liquid and the liquid spraying pipe 28 only sprays liquid.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air-leg rock drill, comprising a support leg (1), characterized in that: A universal shaft (2) is fixedly connected to the outer wall of the support leg (1), and an equipment body (41) is installed on the universal shaft (2). An oil pipe (5) and a water pipe (6) are respectively provided on both sides of the equipment body (41). A cooling chamber (38) is provided inside the equipment body (41), and an exhaust port is provided inside the cooling chamber (38). A drill rod (4) is slidably provided inside the equipment body (41), and the drill rod (4) passes through the cooling chamber (38) to the outside of the equipment body (41). A drill tail (36) is provided at one end of the drill rod (4) close to the inner side of the equipment body (41), and a rotating sleeve (37) is installed on the drill tail (36). A piston (35) is provided inside the equipment body (41), and a cooling sleeve (3) is provided on the outer wall of the equipment body (41). The drill rod (4) slides through the interior of the cooling sleeve (3), and an anti-air strike mechanism is provided inside the cooling sleeve (3). The anti-air strike mechanism comprises two sliding rods (9) arranged inside the cooling sleeve (3), the outer side walls of the two sliding rods (9) are slidably connected to a push plate (10), the push plate (10) is rotatably connected inside to a rotating bearing (7), the rotating bearing (7) is connected to the outer wall of the drill pipe (4), a return spring (11) is fixedly connected to the outer side wall of the push plate (10), the other end of the return spring (11) is fixedly connected to the inner side wall of the cooling sleeve (3), and a cooling mechanism is arranged inside the cooling sleeve (3); The cooling mechanism comprises a mounting bracket (13) arranged inside the cooling sleeve (3), the mounting bracket (13) is rotatably connected to a transmission rod (52) inside, a fan (18) is arranged at the end of the transmission rod (52), one end of the transmission rod (52) away from the fan (18) is fixedly connected to a reciprocating screw (15), a driving member (14) is threadedly sleeved on the outer wall of the reciprocating screw (15), tension boxes (16) are arranged on both sides of the driving member (14), a pull rod (17) is slidably connected to the inner wall of the tension box (16), and pressure springs (53) are fixedly connected to both sides of the pull rod (17), the other end of the pressure spring (53) is fixedly connected to the inner wall of the tension box (16), and the end of the pull rod (17) away from the pressure spring (53) is connected to the push plate (10); The mounting bracket (13) is fixedly connected to a collar (21), the collar (21) being rotatably connected to a transmission rod (52), the collar (21) being internally connected to a liquid guide tube (19), the liquid guide tube (19) being internally connected to a micro suction pump, the end of the liquid guide tube (19) away from the collar (21) being connected to a liquid infusion tube (12), the end of the liquid infusion tube (12) away from the liquid guide tube (19) being connected to the interior of a water pipe (6), and the interior of the transmission rod (52) being provided with a plurality of liquid inlet holes (40); An outer box (39) is fixedly connected to the outer wall of the fan (18); an inner box (44) is arranged inside the outer box (39); a through hole (43) is arranged inside the inner box (44); the through hole (43) is communicated with a plurality of liquid inlet holes (40); a plurality of trigger boxes (42) are arranged inside the inner box (44); the plurality of trigger boxes (42) extend to the outside of the outer box (39); an inner tube (46) is arranged inside the trigger box (42); a through hole (51) is opened inside the inner tube (46); the through hole (51) is communicated with the inside of the inner box (44); a limit rod (46) is fixedly connected inside the inner tube (46) 8), a pressing spring (45) is sleeved on the outer wall of the limit rod (48), a blocking plate (47) is slidably connected to the outer wall of the limit rod (48), the blocking plate (47) is in sliding contact with the inner wall of the inner tube (46), a liquid outlet pipe (50) is arranged inside the trigger box (42), one end of the liquid outlet pipe (50) close to the inner side of the trigger box (42) is sealed, a plurality of liquid through pipes (49) are arranged inside the liquid outlet pipe (50), the plurality of liquid through pipes (49) all penetrate into the inner side of the inner tube (46), a spray hole (34) is arranged at the open end of the liquid outlet pipe (50), and a plurality of blocking plates are arranged on the spray hole (34); A cooling pipe (20) is arranged inside the equipment body (41), an air outlet (22) is opened inside the cooling pipe (20), and the air outlet (22) is connected to the inside of the cooling chamber (38).

2. The air-leg rock drill according to claim 1, characterized in that: A rotating rod (23) is fixedly connected to the outer wall of the outer box (39), the rotating rod (23) is located inside the cooling tube (20), the end of the rotating rod (23) is fixedly connected to a rotating wheel (25), the inner wall of the rotating wheel (25) is provided with a slide rail (24), the inside of the slide rail (24) is slidably connected to a side magnet (33), the outer wall of the side magnet (33) is fixedly connected to a centrifugal spring (32), and one end of the centrifugal spring (32) away from the side magnet (33) is fixedly connected to the inner wall of the slide rail (24).

3. The air-leg rock drill according to claim 2, characterized in that: The cooling tube (20) is fixedly connected to a fixing member (29) inside, and a spray tube (27) is fixedly connected to the outside of the fixing member (29). A push rod (31) is slidably connected to the inner wall of the spray tube (27). A return spring (26) is sleeved on the outer wall of the push rod (31). A trigger magnet is arranged at the end of the push rod (31). The magnetic poles of the trigger magnet and the side magnet (33) are the same. A liquid spray pipe (28) is arranged at the end of the spray tube (27). The liquid spray pipe (28) passes through the inside of the equipment body (41) and is located above the rotating sleeve (37).

4. The air-leg rock drill according to claim 3, characterized in that: The outside of the equipment body (41) is fixedly connected to a storage box (8), and the inside of the spray barrel (27) is connected to a suction pipe (30), and one end of the suction pipe (30) away from the spray barrel (27) is connected to the inside of the storage box (8).

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