TWI471475B - Pneumatic Hammer Drilling with Grouting Pipes - Google Patents

Description

Pneumatic hammer drill with grouting pipe

The invention relates to a hole drill for drilling a ground layer, in particular to a pneumatic hammer drill which can directly introduce a grout through a gravity hammer to continuously impact the drill bit after the downward gravity.

Generally speaking, in the process of building construction, the drilling of the stratum must be carried out through the drilling and excavation equipment, and the types of the site are soft and hard depending on the differences in different regions, especially in Southeast Asian countries (such as Malaysia). It is a very hard rock formation, especially the deeper the rock formation will be harder.

The prior art is the invention patent of "rock disk drilling and boring device" of TW Patent Publication No. I278559; the prior art is transmitted to the device through a rotary power source, and cooperates with the gravity of the drilling device itself and the pneumatic unit of the device reciprocates up and down. The method enables the drill bit to continuously impact the shattered rock formation with downward gravity; the device comprises: an adapter, a structure for providing a rotary transmission and an intake vibration, a sleeve, and one end is coupled to the lower end of the engagement shaft, And connecting a joint, the joint is combined with a pneumatic unit, and the pneumatic unit is combined with a drill bit, so that the pneumatic unit drives the drill bit to generate up and down reciprocating vibration, so that the rock layer can be shattered by continuous downward impact.

However, after the prior art drills the working well in the actual construction, it is necessary to purchase another working well grouting device that can extend into the working well and communicate with the upper grouting port, so that the cement mortar can be sent from the bottom. Slowly move up and fill so that excess sludge water can be completely squeezed out of the working well to complete the bubble-free and high-density grouting construction requirements. Therefore, the prior art process is quite complicated; however, since the grouting project must be added separately Buying a working well grouting equipment, for the engineering industry, it is a very heavy cost burden; in addition, the engineering industry is more One piece of equipment must have more maintenance costs and storage space for one piece of equipment; therefore, the combination of these various problems is really a big problem that has long been plagued by the engineering industry.

The main object of the present invention is to provide a pneumatic hammer drill with a grouting pipe. The invention not only saves the cost of equipment addition and the maintenance cost after the equipment is added, but also saves the storage space required after the equipment is added, and solves the problem. The big problems that the industry has been plagued for a long time can be effectively constructed to shorten the working hours of the construction, so as to achieve the manpower, material cost and efficient construction needs of the engineering industry.

According to the above main object, the present invention provides a pneumatic hammer drill having a grouting pipe, the pneumatic hammer drill including: a rotating head driven by an external force and having an intake pipe, the rotating head is provided with a third An exhaust gas grouting common pipe; a cover disposed outside the rotating driving head and having an air inlet communicating with the air inlet pipe, the outer cover having a temporary space communicating with the third exhaust grouting shared pipe And the outer cover is provided with an exhaust grouting common port communicating with the temporary space; and an extended surface action unit that can be driven by the rotating head and has a guiding pipe communicating with the intake pipe, The guiding duct has a second exhaust grouting common pipeline communicating with the third exhaust grouting common pipeline, and the extending into the surface action unit comprises: an air hammer pipeline connected with the guiding duct The air hammer pipe is provided with a hollow air hammer piston and a drill bit partially extending outside the air hammer pipe and being struck by the air hammer piston; a return air space is connected with the air hammer pipe and is solid The integrated cover of the air hammer pipe, the outer cover of the integrated cover is provided with a stone cut-out port side by side with the air hammer pipe; a grouting pipe fixed to the integrated cover and side by side with the air hammer pipe, the grouting pipe The bottom is connected to a grouting outlet that can communicate with the outside, and the upper portion is connected to a first exhaust grouting common pipe that communicates with the second exhaust grouting common pipe, wherein the grouting outlet is provided with an elasticity and can only be outwardly a push-open cover; an exhaust gas inlet disposed on the integrated cover and communicating with the return air space; and an exhaust gas grouting interface connecting the exhaust gas inlet and the first exhaust gas grouting common pipe, And the exhaust gas inlet has a check valve in the exhaust grouting intersection.

Through the above technical solution, the beneficial effect achieved by the present invention over the essence of the prior art is that after the air pressure pushes the air hammer piston of the present invention and hits the drill bit to drill the working well and stops the air pressure, the present invention does not need to be taken out. According to the invention, the cement mortar can be sent from the bottom grouting outlet to the bottom of the grouting outlet to push the cover off, and the cement mortar will be poured after the action unit is moved up slowly. Work well bottom, and cement mortar can completely extrude excess gravel and sludge water from the working well, and complete the requirements of bubble-free and high-density grouting construction; if not only can save the cost of equipment addition and maintenance after equipment addition Costs, as well as the storage space required after the addition of equipment to solve the big problems that the engineering industry has been plagued for a long time, and can effectively reduce the construction time by construction, so as to achieve the savings, material cost and Efficiency of construction needs.

10‧‧‧Pneumatic hammer drill

20‧‧‧ Cover

21‧‧‧Air inlet

22‧‧‧Interim space

23‧‧‧Exhaust grouting shared port

30‧‧‧Rotating head

31‧‧‧Drive Department

32‧‧‧Intake pipe

33‧‧‧ Third exhaust grouting shared pipe

40‧‧‧Into the surface action unit

41‧‧‧Guided pipeline

411‧‧‧second spiral wing

42‧‧‧Air hammer pipe

421‧‧‧Air hammer piston

422‧‧‧ drill bit

423‧‧‧Exhaust through hole

424‧‧ ‧ spring

425‧‧‧Perforation

43‧‧‧ integrated cover

430‧‧‧return space

431‧‧‧Exhaust inlet

432‧‧‧Exhaust grouting handover interval

433‧‧‧ check valve

434‧‧‧ visor

44‧‧‧grouting pipeline

441‧‧‧ Grouting exit

442‧‧‧First exhaust grouting shared pipe

45‧‧‧Second exhaust grouting shared pipe

46‧‧‧ row of stone corners

461‧‧‧First spiral wing

47‧‧‧ Cover

471‧‧‧Fixed parts

Figure 1 is a perspective view of a preferred embodiment of the present invention.

Fig. 2 is a perspective view showing another perspective of Fig. 1 of the present invention.

Fig. 3 is a partially enlarged schematic view showing "Fig. 2" of the present invention.

Figure 4 is a cross-sectional plan view showing "Figure 1" of the present invention.

Fig. 5 is a schematic view showing the partial pressure flow of the upper portion of Fig. 4 of the present invention.

Fig. 6 is a schematic view showing a part of the exhaust gas in an enlarged view of Fig. 4 of the present invention.

Fig. 7 is a schematic view showing the exhaust portion of the upper portion of Fig. 4 of the present invention.

Fig. 8 is a schematic view showing the grouting of the upper part of Fig. 4 of the present invention.

Fig. 9 is a schematic view showing the partial grouting of the "Fig. 4" of the present invention.

The preferred embodiments and detailed technical aspects of the present invention are described in conjunction with the drawings.

Referring first to FIG. 1 to FIG. 4, the pneumatic hammer drill 10 of the present invention includes: a rotary driving head 30 that is rotated by an external force and has an intake duct 32, and the rotary driving head 30 is disposed. There is a third exhaust grouting common pipe 33, and the top end has a driving portion 31 connected to the rotating external force source; a cover 20 disposed outside the rotating driving head 30 and having the air inlet 21 communicating with the intake duct 32 The outer cover 20 has a temporary space 22 communicating with the third exhaust grouting common pipe 33, and the outer cover 20 is provided with an exhaust grouting common port 23 communicating with the temporary space 22; An extended surface action unit 40 that can be driven by the rotary driving head 30 and has a guiding duct 41 communicating with the air inlet duct 32, wherein the guiding duct 41 has a common pipeline 33 with the third exhaust grouting. The connected second exhaust grouting common pipe 45, and the extended surface action unit 40 includes: an air hammer pipe 42 communicating with the guiding pipe 41, wherein the air hammer pipe 42 is provided with a hollow air hammer The piston 421 and a portion extend out of the air hammer pipe 42 and are subjected to the air hammer The plug 421 strikes the action drill bit 422, and the drill bit 422 is sleeved with a spring 424 that buffers the impact of the air hammer piston 421, and the drill bit 422 is provided with a row that communicates with the air hammer pipe 42 via the spring 424 gap. a gas passage hole 423. The air hammer pipe 42 is also provided with a through hole 425 communicating with the return air space 430 at a position opposite to the spring 424. A return air space 430 is connected to the air hammer pipe 42 and is fixed. An integrated cover 43 of the air hammer pipe 42 is disposed, and the integrated cover 43 is recessed with a stone cut-off port 46 which is arranged along the air hammer pipe 42; and is fixed to the integrated cover 43 to be associated with the air hammer pipe 42. a side-by-side grouting pipe 44, the grouting pipe 44 is connected to a grouting outlet 441 communicating with the outside, and the upper portion is connected to a first exhaust grouting common pipe 442 communicating with the second exhaust grouting common pipe 45, wherein The grouting outlet 441 is provided with a cover 47 which is elastic and can only be pushed outwardly. The cover 47 is fixed to the grouting outlet 441 by a fixing member 471, and the fixing member 471 is preferably Implemented as a screw; one is disposed on the integrated cover 43 and is empty a 430-connected exhaust gas inlet 431; and an exhaust gas grouting interface section 432 that communicates the exhaust gas inlet 431 with the first exhaust gas grouting common pipe 442, and the exhaust gas inlet 431 to the exhaust gas grouting intersection section 432 With a check valve 433, the check valve 433 Above is provided a shutter 434 for preventing the cement mortar from clogging the check valve 433 after grouting. In addition, the extending surface action unit 40 further includes a first spiral wing 461 that is spirally fixed from the row of the stone corner opening 46 to the outside of the integrated cover 43; and wherein the guide pipe 41 is screwed to the outer disk The first spiral wing 461 airfoil can match the engaged second spiral wing 411.

Please refer to FIG. 5 to FIG. 9 again. When the pressure gas is input from the air inlet 21 to form a pneumatic flow, the air pressure flows through the guiding duct 41 to the air hammer duct 42 as shown in FIG. 5; At this time, the pressure of the air pressure pushes the hammer piston 421 to hit the drill bit 422. Since the drill bit 422 is sleeved with the spring 424, the air hammer piston 421 is pressed under the pressure of the air pressure, so that the drill bit 422 forms a reciprocating up and down impact. The function of the action, and the external force rotating the rotating head 30 to drill the working well, the crushed stone and the muddy water hitting at this time naturally gather in the stone-cutting corner 46, and then the first spiral wing 461 and the first The two spiral wings 411 are continuously rotated to carry out the gravel and the muddy water, and since the air hammer piston 421 is hollow, the air pressure can flow from the hollow portion through the exhaust through hole 423, and then flows back through the through hole 425. The air space 430, however, the air pressure in the return air space 430 will push the valve port of the check valve 433 through the exhaust inlet 431, and then enter the exhaust grouting interface 432 and then enter the first and second exhaust grouting. The shared pipes 442 and 45 are as shown in Fig. 6, and then enter again. After the three exhaust grouting common pipe 33 is discharged to the exhaust grouting common port 23 and is discharged outward as shown in "FIG. 7"; it is worth noting that after the working well is drilled as described above and the air pressure is stopped, it is not necessary. The cement mortar is fed from the exhaust grouting common port 23 as shown in FIG. 8 , and the cement mortar is sequentially passed through the third, second, and first. The exhaust grouting common pipes 33, 45, 442, the exhaust grouting delivery section 432 and the grouting pipe 44 are finally sent to the lowermost grouting outlet 441 to push open the cover 47 as shown in Fig. 9, and then After the surface action unit 40 is slowly moved up, the cement mortar can be poured into the bottom of the working well. If the excess sludge water is completely squeezed out of the working well, the bubble-free and high-density grouting construction requirements can be completed; The added cost of the equipment and the maintenance cost after the equipment is added, as well as the storage space required after the equipment is added, to solve the big problems that the engineering industry has been plagued for a long time, and can effectively construct and shorten the construction time. Reach the project Operators need to save manpower, material costs and efficient construction needs. It is worth mentioning that since the backstop valve 433 is located above the check valve 433 in the exhaust grouting interface section 432, it is possible to prevent the cement mortar from clogging the check valve 433 after grouting and affecting the next exhaust function.

Although the technical content of the present invention has been disclosed in the foregoing embodiments, it is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the equivalent of the scope of the patent application of the present invention. Variations and modifications are still within the scope of the invention.

10‧‧‧Pneumatic hammer drill

20‧‧‧ Cover

21‧‧‧Air inlet

22‧‧‧Interim space

23‧‧‧Exhaust grouting shared port

30‧‧‧Rotating head

31‧‧‧Drive Department

32‧‧‧Intake pipe

33‧‧‧ Third exhaust grouting shared pipe

40‧‧‧Into the surface action unit

41‧‧‧Guided pipeline

411‧‧‧second spiral wing

42‧‧‧Air hammer pipe

421‧‧‧Air hammer piston

422‧‧‧ drill bit

423‧‧‧Exhaust through hole

424‧‧ ‧ spring

425‧‧‧Perforation

43‧‧‧ integrated cover

430‧‧‧return space

431‧‧‧Exhaust inlet

432‧‧‧Exhaust grouting handover interval

433‧‧‧ check valve

434‧‧‧ visor

44‧‧‧grouting pipeline

441‧‧‧ Grouting exit

442‧‧‧First exhaust grouting shared pipe

45‧‧‧Second exhaust grouting shared pipe

46‧‧‧ row of stone corners

461‧‧‧First spiral wing

47‧‧‧ Cover

471‧‧‧Fixed parts

Claims (4)

A pneumatic hammer drill with a grouting pipe, the pneumatic hammer drill (10) comprising: a rotating head (30) rotated by an external force and having an intake duct (32), the rotating head (30) is worn a third exhaust grouting common pipe (33); a cover (20) disposed outside the rotating head (30) and having an air inlet (21) communicating with the intake pipe (32), The outer cover (20) has a temporary space (22) communicating with the third exhaust grouting common pipe (33), and the outer cover (20) is provided with a temporary space (22) An exhaust grouting shared port (23); and an extended surface action unit (40) that is drivable by the rotating head (30) and has a guiding duct (41) in communication with the intake duct (32), wherein The guiding duct (41) has a second exhaust grouting shared duct (45) communicating with the third exhaust grouting shared duct (33), and the extending into the surface action unit (40) comprises: An air hammer pipe (42) communicating with the guiding pipe (41), wherein the air hammer pipe (42) is provided with a hollow air hammer piston (421) and a portion extending outside the air hammer pipe (42) Suffered by the hammer piston (421) a drill bit (422); an integrated cover (43) having a return air space (430) in communication with the air hammer pipe (42) and fixed to the air hammer pipe (42), the integrated cover (43) a recessed corner opening (46) parallel to the air hammer pipe (42); a grouting pipe (44) fixed to the integrated cover (43) and side by side with the air hammer pipe (42), The grouting pipe (44) is connected to a grouting outlet (441) communicating with the outside, and the upper portion is connected to a first exhaust grouting common pipe (442) communicating with the second exhaust grouting common pipe (45). Wherein the grouting outlet (441) is provided with a cover (47) that is elastic and can only be pushed outward; a device is disposed on the integrated cover (43) and communicates with the return air space (430) Exhaust inlet (431); An exhaust grouting intersection section (432) communicating with the exhaust gas inlet (431) and the first exhaust grouting common pipeline (442), and the exhaust gas inlet (431) is disposed in the exhaust grouting intersection section (432) It has a check valve (433). The pneumatic hammer drill with a grouting pipe according to claim 1, wherein the extending into the surface action unit (40) further comprises an upwardly spiraling fixing from the row of stone corners (46) to the integrated cover. (43) The outer first spiral wing (461). The pneumatic hammer drill with a grouting pipe according to the second aspect of the invention, wherein the outer pipe of the guiding pipe (41) is screwed and provided with a second matching engagement with the airfoil of the first spiral wing (461). Spiral wing (411). The pneumatic hammer drill with a grouting pipe according to the first, second or third aspect of the patent application, wherein the drill bit (422) is provided with a spring (424) for buffering the impact of the air hammer piston (421), and the The drill bit (422) is provided with an exhaust through hole (423) communicating with the air hammer pipe (42) via the spring (424) gap, and the air hammer pipe (42) is disposed opposite to the spring (424) A perforation (425) is also provided in communication with the return air space (430).