Rock drill excavation mechanism

Abstract

The present invention belongs to the technical field of stone mining tools, and specifically relates to a rock drilling mechanism, comprising a bottom slide, a propulsion device for driving the bottom slide to move is arranged below the bottom slide, the upper end of the bottom slide is rotatably connected to a drilling rod, the upper end of the bottom slide is equipped with a rotating mechanism for driving the drilling rod to rotate, the front end of the outer end of the drilling rod is sleeved with a synchronous supporting mechanism, and the outer side of the synchronous supporting mechanism is sleeved with a fixed base; the drilling rod comprises a rod body, the outer side of the main body of the rod body is provided with a counterclockwise spiral chip removal groove, the front side of the drilling rod is detachably connected to a drilling drill bit, and the outer side of the main body of the drilling drill bit is provided with a clockwise spiral chip removal groove; the device supports the drilling rod at both ends of the drilling rod with the bottom slide and the synchronous supporting mechanism, which can greatly reduce the length of the suspended end of the drilling rod, thereby improving the stability and service life of the drilling rod.

Description

Technical Field

[0001] The invention relates to the technical field of stone mining tools, in particular to a rock drill excavation mechanism. Background Art

[0002] A rock drill is a drilling tool used in stone mining. When blasting stone, a rock drill is first used to drill holes in the rock layer, and then explosives are placed in the holes to blast the rock, thereby completing stone mining or other stone projects. In addition, a rock drill can also be converted into a breaker to break hard layers such as concrete.

[0003] Rock drills can be divided into two categories according to their working principles: 1. The drilling rod in the excavation mechanism adopts a reciprocating working principle, and uses the drilling rod to impact the rock to break and open holes. It is usually used to break concrete and rock and to open shallow holes in rock; 2. The drilling rod in the excavation mechanism adopts a rotary working principle, and the drilling rod rotates to drill into the rock to open holes. This type of rock drill is usually used when opening deep holes in rock.

[0004] During the drilling process, it is necessary to discharge the crushed stone chips in the hole. In the prior art, a spiral chip discharge groove is provided on the outer side of the drilling rod to discharge the crushed stone chips. The drilling rod on the rotary rock drill is relatively long, usually about 3 meters. In the early stage of drilling, a relatively long suspended end is left on the drilling rod (the suspended end refers to the distance from the supporting part on the drilling rod to the end face of the drilling hole). During the drilling process, the longer the suspended end, the easier it is for the drilling rod to shake. The shaking of the drilling rod will hit the rock, which will not only increase the difficulty of rock drilling, but also increase the wear of the drilling rod, seriously damaging the drilling rod. When the weight is heavy, it will also cause the drilling rod to bend and damage; the use of double-end supports can reduce the length of the suspended end of the drilling rod, but the setting of the chip groove will affect the layout of the support structure, that is, when using double-end supports, there is no chip groove on the outside of the drilling rod. There is no chip groove to remove the debris. If there are too many debris inside the borehole, it will greatly increase the difficulty of rock drilling and the wear of the drilling rod; therefore, we propose a drilling rod with double-end supports and a chip groove to reduce the drilling difficulty of the rock drill excavation mechanism and extend the service life of the rock drill excavation mechanism. Summary of the invention

[0005] The object of the present invention is to provide a rock drill excavation mechanism to solve the problem that the drilling rod with a chip removal groove of the rock drill excavation mechanism mentioned in the above background technology has no double-end support.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a rock drill excavation mechanism, comprising a bottom slide, a propulsion device for driving the bottom slide to move is arranged below the bottom slide, a drilling rod is rotatably connected to the upper end of the bottom slide, a rotating mechanism for driving the drilling rod to rotate is installed at the upper end of the bottom slide, a synchronous support mechanism is sleeved on the front end of the outer end of the drilling rod, and a fixed base is sleeved on the outer side of the synchronous support mechanism;

[0007] The drilling rod comprises a rod body, the outer side of the rod body is provided with a counterclockwise spiral chip removal groove, the front side of the drilling rod is detachably connected to a drilling bit, the outer side of the drilling bit body is provided with a clockwise spiral chip removal groove;

[0008] The synchronous support mechanism includes an inner support sleeve, the inner side of which is provided with a spiral protrusion corresponding to the counterclockwise spiral chip removal groove, the outer sliding sleeve of the inner support sleeve is provided with an outer support sleeve, the front and rear sides of the outer side of the inner support sleeve are provided with limiting retaining rings, and the front and rear sides of the outer side of the outer support sleeve are provided with fixed retaining rings.

[0009] Preferably, the body of the drilling drill bit is provided with a threaded docking hole on a side close to the drilling rod, and the front side of the rod body is provided with a threaded docking column matched with the threaded docking hole.

[0010] Preferably, a flushing mechanism is provided on the outer side of the perforating rod;

[0011] The flushing mechanism comprises a flushing base, a flushing brush and a flushing pipe are arranged on the inner side of the flushing base, a flushing nozzle is connected to the main body of the flushing pipe, and a water inlet pipe is installed on the outer side of the flushing base, and the water inlet pipe is connected with the flushing pipe through a pipeline.

[0012] Preferably, the bottom slide seat includes a lower slide, the upper side of the lower slide is slidably connected to the upper slide, an impact motor is installed on the upper side of the lower slide, a cam is sleeved on the outer side of the rotating shaft of the impact motor, a transmission connecting rod is hinged on the outer side of the upper end of the cam, and the other end of the transmission connecting rod is hinged to the upper slide.

[0013] Preferably, impact support plates are installed on the front and rear sides of the upper slide plate, and impact push plates are sleeved on the front and rear sides of the outer side of the rod body, and the impact push plates on both sides are located between the impact support plates on both sides.

[0014] Preferably, a spline support plate is provided at the front and rear of the upper side of the lower sliding plate, and a position adjustment support plate is provided at the front and rear of the upper side of the upper sliding plate;

[0015] The rotating mechanism includes a drilling motor, an adjusting spline shaft is rotatably connected between the spline support plates on both sides, one end of the adjusting spline shaft passes through the spline support plate and is connected to the rotating shaft of the drilling motor, a driving gear is slidably connected to the outer side of the adjusting spline shaft, and a driven gear meshing with the driving gear is sleeved on the outer side of the rod body;

[0016] The driving gear is located between the position adjustment support plates on both sides.

[0017] Preferably, limit anti-drop plates are provided at the front and rear of the upper side of the lower sliding plate, and the upper sliding plate is located between the limit anti-drop plates at both sides.

[0018] Preferably, a water guide hole is provided on the inner side of the main body of the rod body, and a drainage hole connected to the water guide hole is provided on the outer front end of the main body of the rod body.

[0019] Preferably, buffer grooves are provided on the front and rear sides of the body of the outer support sleeve, a buffer spring is installed on the inner side of the buffer groove, a buffer guide column is installed on the other end of the buffer spring, and the other end of the buffer guide column passes through the buffer groove and corresponds to the limit stop ring.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1) The device supports the drilling rod at both ends of the drilling rod with a bottom slide and a synchronous support mechanism. The distance between the synchronous support mechanism and the drill hole on the rock is short, which can greatly reduce the length of the suspended end of the drilling rod, thereby improving the stability and service life of the drilling rod;

[0022] 2) The synchronous support mechanism of the device includes an inner support sleeve and an outer support sleeve that can slide relative to each other. A spiral protrusion that matches the counterclockwise spiral chip removal groove is also provided on the inner side of the inner support sleeve, so that the inner support sleeve can be in close contact with the drilling rod, thereby stably supporting the drilling rod;

[0023] 3) The drilling rod is rotated and pushed forward during operation. When the drilling rod of the device is pushed forward, it will drive the inner support sleeve to move forward. When the drilling rod rotates, the inner support sleeve will rotate at a lower speed than the drilling rod under the influence of friction. At this time, under the cooperation of the counterclockwise spiral chip removal groove and the spiral protrusion, the rotating drilling rod will pull the inner support sleeve backward, thereby forming a dynamic balance of the inner support sleeve;

[0024] 4) When the drilling mechanism of the rock drill is working, the damage rate of the drilling bit is higher than that of the drilling rod. The device is provided with a detachable drilling bit on the front side of the drilling rod, so that the drilling bit can be replaced. Compared with the integrated structure of the drilling bit and the drilling rod, the device can reduce the replacement and maintenance costs of the drilling bit and the drilling rod;

[0025] 5) The device is provided with a counterclockwise spiral chip removal groove on the outer side of the drilling rod. When the drilling rod rotates, the counterclockwise spiral chip removal groove can more easily push out the broken stone chips in the drill hole, thereby reducing the wear of the drilling rod and the drilling drill bit and prolonging the service life of the drilling rod and the drilling drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 It is a structural schematic diagram of the synchronous support mechanism of the present invention;

[0028] Figure 3 It is a schematic cross-sectional structure diagram of the synchronous support mechanism of the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the drilling rod of the present invention;

[0030] Figure 5 It is a schematic cross-sectional view of the right side structure of the perforating rod of the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the drilling bit of the present invention;

[0032] Figure 7 This is a schematic diagram of the bottom slide structure of the present invention;

[0033] Figure 8 This is a schematic diagram of the cross-sectional structure of the bottom slide seat of the present invention;

[0034] Fig. 9 It is a schematic diagram of the structure of the flushing mechanism of the present invention.

[0035] In the figure: 1 a chiseling drill bit, 11 a threaded butt hole, 12 a clockwise spiral chip removal groove, 2 a chiseling rod, 21 a rod body, 22 an impact push plate, 23 a water guide hole, 24 a counterclockwise spiral chip removal groove, 25 a threaded butt column, 26 a drainage hole, 3 a fixed base, 4 a synchronous support mechanism, 41 an inner support sleeve, 42 an outer support sleeve, 43 a buffer guide column, 44 a limit retaining ring, 45 a fixed retaining ring, 46 a buffer spring, 5 a flushing mechanism, 51 a flushing base, 52 a water inlet pipe, 53 a flushing pipe, 54 a flushing nozzle, 6 a propulsion device, 7 a bottom slide seat, 71 a lower slide plate, 72 an upper slide plate, 73 a positioning support plate, 74 an impact support plate, 75 a spline support plate, 76 an impact motor, 77 a cam, 78 a transmission connecting rod, 79 a limit anti-drop plate, 8 a rotating mechanism, 81 an adjusting spline shaft, 82 a driven gear, 83 an active gear, and 84 a drilling motor. DETAILED DESCRIPTION

[0036] 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.

[0037] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention 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 on the present invention.

[0038] Example:

[0039] See also Figure 1-9 The present invention provides a technical solution: a rock drill excavation mechanism, including a bottom slide 7, the bottom slide 7 is slidably connected to the rock drill through a slide rail, and the bottom slide 7 can only move forward and backward due to the limit of the slide rail. A propulsion device 6 is arranged below the bottom slide 7 to drive the bottom slide 7 to move forward and backward (the propulsion device 6 is a prior art and will not be described in detail here). The upper end of the bottom slide 7 is rotatably connected to a drilling rod 2, and the drilling rod 2 is connected to an impact support plate 74 through a bearing. The number of the impact support plates 74 is two, and the lower ends of the two impact support plates 74 are fixed on the lower slide plate 71 of the bottom slide 7.

[0040] A rotating mechanism 8 is installed at the upper end of the bottom slide 7. The rotating mechanism 8 is used to drive the drilling rod 2 to rotate. The front side of the drilling rod 2 is connected to the drilling drill bit 1. The drilling drill bit 1 is used to drill and excavate on the rock. A threaded docking hole 11 is provided at the rear end of the body of the drilling drill bit 1. A threaded docking column 25 is provided at the front side of the drilling rod 2. The drilling rod 2 and the drilling drill bit 1 can be connected by screwing the threaded docking column 25 with the threaded docking hole 11. The threaded rotation direction of the threaded docking column 25 and the threaded docking hole 11 is opposite to the direction of rotation of the drilling rod 2 when rotating. When the drilling rod 2 is working, the drilling drill bit 1 will be gradually tightened, thereby preventing the drilling drill bit 1 from automatically loosening. At the same time, the threaded connection can also facilitate the disassembly and replacement of the drilling drill bit 1. The drilling rod 2 includes a rod body 21, and a counterclockwise spiral chip groove 24 is provided on the outer side of the body of the rod body 21. A clockwise spiral chip groove 12 is provided on the outer side of the body of the drilling drill 1. The helical rise angle of the clockwise spiral chip groove 12 is 30°, and the helical rise angle of the counterclockwise spiral chip groove 24 is 30° to 60°. After the drilling rod 2 is connected to the drilling drill 1, the clockwise spiral chip groove 12 is connected to the counterclockwise spiral chip groove 24. The rotation direction of the clockwise spiral chip groove 12 is the same as the rotation direction of the drilling drill 1 when working, so as to facilitate the drilling and excavation of the drilling drill 1. The rotation direction of the counterclockwise spiral chip groove 24 is opposite to the rotation direction of the drilling rod 2 when working. When the drilling rod 2 is working, the counterclockwise spiral chip groove 24 is rotated to push the crushed stone chips outward, thereby facilitating the automatic discharge of the crushed stone chips.

[0041] The front end of the outer end of the drilling rod 2 is sleeved with a synchronous support mechanism 4, and the outer side of the synchronous support mechanism 4 is sleeved with a fixed base 3, and the lower end of the fixed base 3 is fixed on the rock drill. The synchronous support mechanism 4 includes an inner support sleeve 41, and the inner side of the inner support sleeve 41 is provided with a spiral protrusion corresponding to the counterclockwise spiral chip groove 24. The spiral protrusion is inserted into the counterclockwise spiral chip groove 24 to support the front end of the drilling rod 2, and the connection between the spiral protrusion and the counterclockwise spiral chip groove 24 is similar to a threaded connection. When the helix angle of the counterclockwise spiral chip groove 24 is less than 45°, the inner side of the inner support sleeve 41 needs to be filled with balls to assist sliding. The outer sliding sleeve of the inner support sleeve 41 is provided with an outer support sleeve 42, and the outer side of the inner support sleeve 41 is provided with a spline, and the inner side of the outer support sleeve 42 is provided with a spline groove. Through the cooperation of the spline groove and the spline, the inner support sleeve 41 can slide forward and backward along the axial direction of the outer support sleeve 42. Limiting retaining rings 44 are provided on the front and rear sides of the outer side of the inner support sleeve 41. The limiting retaining rings 44 on both sides are used to limit the distance of the inner support sleeve 41 sliding forward and backward to prevent the inner support sleeve 41 from sliding off the outer support sleeve 42. Fixed retaining rings 45 are provided on the front and rear sides of the outer side of the outer support sleeve 42. The outer support sleeve 42 is connected to the fixed base 3 through a bearing. The fixed retaining rings 45 on both sides are respectively located at the front and rear sides of the fixed base 3. The fixed retaining rings 45 are used to prevent the outer support sleeve 42 from falling off the fixed base 3.

[0042] A flushing mechanism 5 is provided on the outer side of the drilling rod 2. The flushing mechanism 5 is located on the front side of the fixed base 3 and is used for cleaning the drilling rod 2. After the drilling rod 2 is inserted into the borehole, stone chips will adhere to the outer side of the drilling rod 2. These stone chips will enter the synchronous support mechanism 4 and increase the wear of the drilling rod 2. The stone chips are removed by the flushing mechanism 5, which can prevent the drilling rod 2 from bringing the stone chips into the synchronous support mechanism 4. The flushing mechanism 5 includes a flushing base 51, which is installed on the rock drill. A circular hole and an arch hole are arranged on the inner side of the flushing base 51. There are two arch holes, and the circular hole is located between the two arch holes. A flushing brush 55 is installed on the inner side of the circular hole. Flushing pipes 53 are installed on the inner sides of the two arch holes. The flushing pipes 53 are arranged on the upper side wall and the left and right side walls of the arch holes. A flushing nozzle 54 is installed on the outer side of the flushing pipe 53. The flushing nozzle 54 points to the axis of the flushing base 51. The drilling rod 2 passes through the arch hole and the circular hole. When the drilling rod 2 moves backward, the flushing nozzle 54 sprays water to the drilling rod 2 to clean the drilling rod 2. At the same time, the flushing brush 55 can also wash the rotating drilling rod 2. The setting of the arch hole can facilitate the flushing of gravel, and at the same time, the gravel at the bottom of the arch hole will not contact the drilling rod 2, thereby preventing the washed away gravel from adhering to the drilling rod 2 again. A water inlet pipe 52 is installed on the outside of the flushing base 51 . The water inlet pipe 52 is connected to the flushing pipe 53 through a pipeline, and an external water supply system is connected to the water inlet pipe 52 .

[0043] The bottom slide 7 includes a lower slide 71, which is driven by the propulsion device 6 and is used to realize the normal advancement and retreat of the drilling rod 2. A slide rail is installed on the upper side of the lower slide 71, and the upper slide 72 is connected to the slide rail through a slider. The upper slide 72 can drive the drilling rod 2 to move forward and backward quickly, and then can perform reciprocating impact on the rock. An impact motor 76 is installed on the upper side of the lower slide 71, and a cam 77 is sleeved on the outer side of the rotating shaft of the impact motor 76. A transmission connecting rod 78 is hinged on the outer side of the upper end of the cam 77, and the other end of the transmission connecting rod 78 is hinged to the upper slide 72. When the rotating shaft of the impact motor 76 rotates, it will drive the cam 77 to rotate, and the cam 77 will drive the upper slide 72 to reciprocate through the transmission connecting rod 78.

[0044] The front and rear sides of the outer side of the rod body 21 are sleeved with impact push plates 22, and the impact push plates 22 on both sides are located between the impact support plates 74 on both sides. When the upper slide plate 72 reciprocates, it will drive the impact push plates 22 to reciprocate through the impact support plates 74, and the impact push plates 22 drive the drilling rod 2 to reciprocate. When the drilling rod 2 reciprocates, the drilling rod 2 will drive the inner support sleeve 41 to slide forward and backward. At this time, the fixed base 3 supports the outer support sleeve 42, the outer support sleeve 42 supports the inner support sleeve 41, and the inner support sleeve 41 supports the drilling rod 2, that is, when the device is performing an impact operation, the synchronous support mechanism 4 can still provide stability support for the drilling rod 2.

[0045] The upper front and rear sides of the lower slide plate 71 are provided with spline support plates 75. The rotating mechanism 8 includes a drilling motor 84. The top end of the rotating shaft of the drilling motor 84 is connected with an adjusting spline shaft 81. The two ends of the adjusting spline shaft 81 are connected with the spline support plates 75 through bearings. The outer side of the adjusting spline shaft 81 is slidably connected with a driving gear 83. The driving gear 83 is provided with a spline groove that matches the adjusting spline shaft 81. Through the cooperation between the spline groove and the adjusting spline shaft 81, the driving gear 83 can only slide forward and backward. The upper front and rear sides of the upper slide plate 72 are provided with adjustment support plates 73. The moving gear 83 is located between the adjustment support plates 73 on both sides. When the upper slide plate 72 slides, the adjustment support plate 73 drives the driving gear 83 to move synchronously. A driven gear 82 is sleeved on the outside of the rod body 21, and the driven gear 82 is meshed with the driving gear 83; when working, the drilling motor 84 can drive the adjusting spline shaft 81 to rotate, and the adjusting spline shaft 81 drives the driving gear 83 to rotate, and the driving gear 83 drives the drilling rod 2 to rotate through the driven gear 82, and the drilling rod 2 drives the drilling drill 1 to rotate. The drilling motor 84 is located on the outside of the upper slide 72, so that when the drilling drill 1 performs an impact operation, the impact force received by the drilling motor 84 will be smaller, thereby reducing the probability of failure of the drilling motor 84.

[0046] Limiting anti-dropout plates 79 are provided at the front and rear of the upper side of the lower slide plate 71, and the upper slide plate 72 is located between the limiting anti-dropout plates 79 on both sides. The limiting anti-dropout plates 79 are used to prevent the upper slide plate 72 from falling off. In this way, when the connection between the cam 77, the transmission connecting rod 78 and the upper slide plate 72 falls off, the upper slide plate 72 will not fall off, thereby improving the safety of the device.

[0047] A water guide hole 23 is provided inside the main body of the rod body 21, and the rear end of the water guide hole 23 penetrates the rod body 21. The rod body 21 is connected to an external water supply system through a rotary joint, and water is supplied to the water guide hole 23 through the external water supply system. A drainage hole 26 connected to the water guide hole 23 is provided at the front end of the outer side of the main body of the rod body 21. The water in the water guide hole 23 can flow into the drill hole after being discharged from the water guide hole 23, thereby humidifying the rock and cooling the drilling bit 1.

[0048] The front and rear sides of the main body of the outer support sleeve 42 are provided with buffer grooves, and a buffer spring 46 is installed on the inner side of the buffer groove. A buffer guide column 43 is installed on the other end of the buffer spring 46. When the inner support sleeve 41 slides back and forth, it will drive the limit stop ring 44 to move synchronously. When the limit stop ring 44 is in contact with the buffer guide column 43, the elastic force of the buffer spring 46 will hinder the continued movement of the limit stop ring 44 to avoid excessive impact force between the limit stop ring 44 and the fixed stop ring 45.

[0049] Working principle: Impact operation: Start the impact motor 76, the rotating shaft of the impact motor 76 drives the cam 77 to rotate, the cam 77 drives the upper slide plate 72 to make reciprocating motion on the front and rear sides through the transmission connecting rod 78, the upper slide plate 72 drives the impact push plate 22 to make reciprocating motion through the impact support plate 74, the impact push plate 22 drives the drilling rod 2 and the drilling drill bit 1 on the front side of the drilling rod 2 to make reciprocating motion, and the drilling drill bit 1 performs an impact operation on the rock by frequently moving forward and backward;

[0050] Drilling operation: first start the propulsion device 6, and the propulsion device 6 pushes the bottom slide 7 forward, and the bottom slide 7 drives the drilling rod 2 and the drilling drill bit 1 to move forward. When the drilling drill bit 1 approaches the rock, start the drilling motor 84, and the drilling motor 84 drives the adjusting spline shaft 81 to rotate. The adjusting spline shaft 81 drives the driven gear 82 to rotate through the driving gear 83, and the driven gear 82 drives the drilling rod 2 and the drilling drill bit 1 to rotate. The drilling drill bit 1 performs a drilling operation on the rock by rotating;

[0051] During the drilling operation, the propulsion device 6 will drive the drilling rod 2 and the drilling drill bit 1 to advance slowly. The drilling rod 2 will push the inner support sleeve 41 forward when advancing, and the drilling rod 2 will drive the inner support sleeve 41 to move backward and reset when rotating. When the inner support sleeve 41 moves backward to the limit, the drilling rod 2 will drive the inner support sleeve 41 to rotate synchronously when rotating, and the inner support sleeve 41 will drive the outer support sleeve 42 to rotate, so that the inner support sleeve 41 can stably support the drilling rod 2 when the drilling rod 2 moves forward and rotates.

[0052] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0053] 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. A rock drill excavation mechanism, comprising a bottom slide (7), a propulsion device (6) for driving the bottom slide (7) to move is arranged below the bottom slide (7), and a drilling rod (2) is rotatably connected to the upper end of the bottom slide (7), characterized in that: A rotating mechanism (8) for driving the drilling rod (2) to rotate is installed at the upper end of the bottom slide (7); a synchronous support mechanism (4) is sleeved on the front end of the outer end of the drilling rod (2); and a fixed base (3) is sleeved on the outer side of the synchronous support mechanism (4); The drilling rod (2) comprises a rod body (21), the outer side of the rod body (21) is provided with a counterclockwise spiral chip removal groove (24), the front side of the drilling rod (2) is detachably connected to a drilling bit (1), the outer side of the drilling bit (1) is provided with a clockwise spiral chip removal groove (12); The synchronous support mechanism (4) comprises an inner support sleeve (41), the inner side of the inner support sleeve (41) is provided with a spiral protrusion corresponding to the counterclockwise spiral chip removal groove (24), the outer sliding sleeve of the inner support sleeve (41) is provided with an outer support sleeve (42), the front and rear sides of the outer side of the inner support sleeve (41) are provided with limit stop rings (44), and the front and rear sides of the outer side of the outer support sleeve (42) are provided with fixed stop rings (45); The outer support sleeve (42) has buffer grooves on its front and rear sides. A buffer spring (46) is installed inside the buffer groove. A buffer guide column (43) is installed at the other end of the buffer spring (46). The other end of the buffer guide column (43) passes through the buffer groove and corresponds to the limit stop ring (44).

2. A rock drill excavation mechanism according to claim 1, characterized in that: The body of the drilling bit (1) is provided with a threaded docking hole (11) on one side close to the drilling rod (2), and the front side of the rod body (21) is provided with a threaded docking column (25) matched with the threaded docking hole (11).

3. A rock drill excavation mechanism according to claim 1, characterized in that: A flushing mechanism (5) is provided on the outer side of the perforating rod (2); The flushing mechanism (5) comprises a flushing base (51), a flushing brush (55) and a flushing pipe (53) are arranged on the inner side of the flushing base (51), a flushing nozzle (54) is connected to the body of the flushing pipe (53), and a water inlet pipe (52) is installed on the outer side of the flushing base (51), and the water inlet pipe (52) is connected to the flushing pipe (53) through a pipeline.

4. A rock drill excavation mechanism according to claim 1, characterized in that: The bottom slide seat (7) comprises a lower slide plate (71), the upper side of the lower slide plate (71) is slidably connected to an upper slide plate (72), an impact motor (76) is mounted on the upper side of the lower slide plate (71), a cam (77) is sleeved on the outer side of the rotating shaft of the impact motor (76), a transmission connecting rod (78) is hinged on the outer side of the upper end of the cam (77), and the other end of the transmission connecting rod (78) is hinged to the upper slide plate (72).

5. A rock drill excavation mechanism according to claim 4, characterized in that: Impact support plates (74) are installed on the front and rear sides of the upper slide plate (72), and impact push plates (22) are sleeved on the front and rear sides of the outer side of the rod body (21), and the impact push plates (22) on both sides are located between the impact support plates (74) on both sides.

6. A rock drill excavation mechanism according to claim 4, characterized in that: Spline support plates (75) are provided at the front and rear of the upper side of the lower slide plate (71), and position adjustment support plates (73) are provided at the front and rear of the upper side of the upper slide plate (72); The rotating mechanism (8) comprises a drilling motor (84), an adjusting spline shaft (81) is rotatably connected between the spline support plates (75) on both sides, one end of the adjusting spline shaft (81) passes through the spline support plate (75) and is connected to the rotating shaft of the drilling motor (84), a driving gear (83) is slidably connected to the outer side of the adjusting spline shaft (81), and a driven gear (82) meshing with the driving gear (83) is sleeved on the outer side of the rod body (21); The driving gear (83) is located between the position adjustment support plates (73) on both sides.

7. A rock drill excavation mechanism according to claim 4, characterized in that: The front and rear of the upper side of the lower slide plate (71) are both provided with limiting anti-slip plates (79), and the upper slide plate (72) is located between the limiting anti-slip plates (79) on both sides.

8. A rock drill excavation mechanism according to claim 1, characterized in that: A water guide hole (23) is provided on the inner side of the main body of the rod body (21), and a drainage hole (26) communicating with the water guide hole (23) is provided on the outer front end of the main body of the rod body (21).

Images