CN211874497U

CN211874497U - Rock vertical shield drill bit for building foundation engineering

Info

Publication number: CN211874497U
Application number: CN201922278436.8U
Authority: CN
Inventors: 唐勋; 刘晓明; 刘华夏; 吴琼
Original assignee: Hunan Dinggong Geotechnical Special Equipment Co ltd
Current assignee: Hunan Dinggong Geotechnical Special Equipment Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-11-06
Anticipated expiration: 2029-12-18

Abstract

The utility model provides a perpendicular shield of rock drill bit for building foundation engineering, includes upper housing, lower casing, flexible pull rod, bearing, screw pump, driving motor, drive mechanism and alloy drill bit, flexible pull rod is connected with the top of upper housing, the upper housing passes through the bearing and is connected with lower casing rotation, driving motor locates in the upper housing, driving motor passes through the rotation of drive mechanism drive lower casing, the screw pump passes bearing intercommunication upper housing and lower casing, the bottom of casing down is located to the alloy drill bit. The invention has simple structure and low manufacturing cost, can ensure the stability of the drill bit in the drilling process, can effectively avoid the vibration of the drill bit caused by the swinging of the connecting rod, avoids the deflection and the damage of the drill bit caused by the vibration of the drill bit and ensures the verticality of a pile hole.

Description

Rock vertical shield drill bit for building foundation engineering

Technical Field

The utility model relates to a building engineering field, in particular to a perpendicular shield of rock drill bit for building foundation engineering.

Background

Along with the development of modern construction in China, high-rise buildings and super high-rise buildings in engineering construction are more and more, because the load transmitted from the upper part in the high-rise building foundation construction is huge, common foundations are difficult to bear and special treatment is needed to meet the requirements of designing the bearing capacity and settlement of the foundations, the cast-in-place pile construction is divided into two parts, namely hole forming and pile forming, wherein the hole forming is the first link in the cast-in-place pile construction.

The construction of the cast-in-place pile is divided into a hole forming part and a pile forming part, wherein the hole forming part is the first link in the construction of the cast-in-place pile, on one hand, the conventional rock vertical shield machine is heavy in whole and high in manufacturing cost, and meanwhile, a special crane is required to be used in a matched mode, so that the cost and the operation difficulty are increased, and the cast-in-place pile is inconvenient to enter a construction site in urban construction; on the other hand, the drill bit is driven to rotate by the pull rod, so that the connecting rod swings and the drill bit vibrates greatly in the drilling process, and the pile hole is easy to deflect and the drill bit system is easy to damage.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that, overcome the above-mentioned defect that prior art exists, provide a perpendicular shield of rock drill bit for building foundation engineering.

The utility model provides a technical scheme that its technical problem adopted is, a perpendicular shield of rock drill bit for building foundation engineering, including last casing, lower casing, flexible pull rod, bearing, screw pump, driving motor, drive mechanism and alloy drill bit, flexible pull rod is connected with the top of last casing, it passes through the bearing and is connected with lower casing rotation to go up the casing, driving motor locates in the casing, driving motor passes through the drive mechanism drive casing rotation down, the screw pump passes casing and lower casing on the bearing intercommunication, the bottom of casing is located down to the alloy drill bit.

Preferably, drive mechanism includes support, pinion, drive bearing and internal gear dish, the support is located down on the casing, drive bearing locates on the support, drive motor's output shaft passes the bottom of last casing, and is connected with drive bearing, on drive motor's the output shaft was located to the pinion cover, internal gear dish and casing rigid coupling down, and with the pinion toothing, the pinion passes through internal gear dish and drives casing rotation down.

Preferably, the screw pump includes a drainage motor, a pump pipe, a slurry outlet, a suction chamber and a leakage-proof cover, the drainage motor is disposed at the top end of the pump pipe, the pump pipe is communicated with the slurry outlet, the slurry outlet passes through the upper casing to discharge slurry outwards, the pump pipe passes through a bearing and is communicated with the suction chamber disposed in the lower casing, the leakage-proof cover is disposed in the upper casing and forms a leakage-proof chamber with the upper casing, and the bearing is disposed in the leakage-proof chamber.

Preferably, the pump line overcoat is equipped with the inlet tube, the inlet tube passes casing and lower casing on the bearing intercommunication, be equipped with the water inlet on the inlet tube, the bottom of water inlet is connected with the upper end of inlet tube, the top of water inlet is passed the upper casing, and the clear water passes through the water inlet and flows through the inlet tube and reach casing down.

Preferably, the alloy drill comprises a first drill and a second drill, the first drill is arranged at the center of the bottom end of the lower shell, and the second drill is arranged at the outer periphery of the lower shell.

Preferably, the bottom surface of the lower shell is of a conical structure with the center protruding outwards, and the bottom surface of the lower shell is provided with a slag outlet.

Preferably, a cutter disc is arranged on the bottom surface of the lower shell, and a plurality of hobbing cutter mechanisms are arranged on the cutter disc.

Preferably, the hobbing cutter mechanism includes single-edged hobbing cutter, arbor and end cover, a plurality of single-edged hobbing cutters cover are located on the arbor, the both sides of single-edged hobbing cutter are located to the end cover.

Preferably, the top end of the upper shell is provided with a reinforcing rib, and the reinforcing rib is connected with the telescopic pull rod.

Compared with the prior art, the beneficial effects of the utility model are that:

the telescopic pull rod drives the shield drill bit to enter a region needing drilling, clear water is introduced into a water inlet, the three transmission motors synchronously drive the three pinions to rotate, the three pinions are meshed with the inner gear disc, the lower shell is driven to rotate synchronously to carry out wet grinding, the stability of the drill bit in the drilling process is guaranteed, the drill bit is prevented from being inclined in the drilling process and damaged due to vibration of the drill bit, the telescopic pull rod is connected with the upper shell through the reinforcing ribs, the vibration of the drill bit caused by the swinging of the connecting rod can be effectively avoided, and; the single-edge hob can be replaced to ensure the optimal wet grinding effect; the mud that produces in the drilling process gets into lower casing through the slag hole, and the drainage motor passes through the suction chamber and discharges mud from the mud export through the pump line, and the prevention of liquid leakage cover can effectively avoid mud to spill over and get into the normal work of upper housing influence transmission motor.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

FIG. 1 is a front view of one embodiment of the present invention;

fig. 2 is a top view of the lower housing of the present invention;

fig. 3 is a schematic structural view of the upper housing of the present invention;

fig. 4 is a bottom view of the lower case of the present invention;

fig. 5 is a schematic structural diagram of the hob mechanism of the present invention.

Description of reference numerals: 1-upper shell, 11-reinforcing rib, 2-lower shell, 21-slag hole, 22-cutter head, 221-hob mechanism, 2211-single-blade hob, 2212-cutter shaft, 2213-end cover, 3-telescopic pull rod, 4-bearing, 5-screw pump, 51-drainage motor, 52-pump pipe, 53-slurry outlet, 54-suction cavity, 55-leakage-proof cover, 56-water inlet pipe, 561-water inlet, 6-transmission motor, 7-transmission mechanism, 71-bracket, 72-pinion, 73-transmission bearing, 74-internal gear disc, 8-alloy drill bit, 81-first drill bit and 82-second drill bit.

Detailed Description

The technical solution provided by the present invention is further explained with reference to the accompanying drawings and embodiments.

Please refer to fig. 1-5 together, the utility model provides a perpendicular shield of rock drill bit for building foundation engineering, including last casing 1, lower casing 2, flexible pull rod 3, bearing 4, screw pump 5, driving motor 6, drive mechanism 7 and alloy drill bit 8, flexible pull rod 3 can be dismantled with the top of last casing 1 and be connected, it rotates with lower casing 2 through bearing 4 to go up casing 1 and be connected, three driving motor 6 evenly distributed is in last casing 1, driving motor 6 rotates through casing 2 under the drive of drive mechanism 7, screw pump 5 passes bearing 4 intercommunication casing 1 and lower casing 2, the bottom of casing 2 is down located to alloy drill bit 8.

Drive mechanism 7 includes support 71, pinion 72, drive bearing 73 and internal gear dish 74, on casing 2 was located down to support 71, drive bearing 73 was located on support 71, the output shaft of drive motor 6 passed the bottom of last casing 1, and was connected with drive bearing 73, pinion 72 overlaps on locating drive motor 6's the output shaft, internal gear dish 74 and casing 2 rigid coupling down, and mesh with pinion 72, pinion 72 drives down casing 2 through internal gear dish 74 and rotates, meshes through three pinion 72 and internal gear dish 74, and the stability of the in-process drill bit is crept into in the guarantee, avoids drill bit vibrations to cause the drilling skew. Damaging the drill bit.

The screw pump 5 comprises a drainage motor 51, a pump pipe 52, a slurry outlet 53, a suction cavity 54 and a liquid leakage prevention cover 55, wherein the drainage motor 51 is arranged at the top end of the pump pipe 52, the pump pipe 52 is communicated with the slurry outlet 53, the slurry outlet 53 penetrates through the upper shell 1 to discharge slurry outwards, the pump pipe 52 penetrates through the bearing 4 to be communicated with the suction cavity 54 arranged in the lower shell 2, the liquid leakage prevention cover 55 is arranged in the upper shell 1 to form a liquid leakage prevention cavity with the upper shell 1, and the bearing 4 is arranged in the liquid leakage prevention cavity and can effectively prevent slurry from overflowing and entering the upper shell 1 to influence the normal work of the transmission motor 6.

The pump pipe 52 is sleeved with a water inlet pipe 56, the water inlet pipe 56 penetrates through the bearing 4 to be communicated with the upper shell 1 and the lower shell 2, a water inlet 561 is arranged on the water inlet pipe 56, the bottom end of the water inlet 561 is connected with the upper end of the water inlet pipe 56, the top end of the water inlet 561 penetrates through the upper shell 1, and clean water flows through the water inlet pipe 56 through the water inlet 561 and reaches the lower shell 2.

The alloy drill 8 includes a first drill 81 and a second drill 82, the first drill 81 is disposed at the center of the bottom end of the lower casing 2, and the second drill 82 is disposed at the peripheral edge of the lower casing 2, so as to improve the drilling efficiency.

The bottom surface of casing 2 is the outside protruding toper structure of central authorities down, and the bottom surface of casing 2 is equipped with slag hole 21 down, be equipped with blade disc 22 on the bottom surface of casing 2 down, be equipped with a plurality of hobbing cutter mechanisms 221 on the blade disc 22, hobbing cutter mechanism 221 includes single-edged hobbing cutter 2211, arbor 2212 and end cover 2213, on arbor 2212 was located to a plurality of single-edged hobbing cutter 2211 covers, the both sides of single-edged hobbing cutter 2211 are located to end cover 2213.

The top end of the upper shell 1 is provided with a reinforcing rib 11, and the reinforcing rib 11 is connected with the telescopic pull rod 3 to avoid the swinging of the connecting rod.

The utility model discloses a theory of operation:

when the device is used, the telescopic pull rod 3 is connected with the upper shell through the reinforcing ribs 11, the swinging of the connecting rod is avoided, the telescopic pull rod 3 drives the shield drill bit to enter a region needing drilling, clear water is introduced into a water inlet 561, three transmission motors 6 synchronously drive three pinions 72 to rotate, the three pinions 72 are meshed with the inner gear disc 74, the lower shell 2 is synchronously driven to rotate, the single-edge hob 2211 carries out wet grinding on rocks, slurry generated in the drilling process enters the lower shell 2 through the slag outlet 21, the drainage motor 51 discharges the slurry from the slurry outlet 53 through the pump pipe 52 through the suction cavity 54, the vibration of the drill bit caused by the swinging of the connecting rod can be effectively avoided, and the verticality of a pile hole is.

The above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a perpendicular shield of rock drill bit for building foundation engineering which characterized in that: including last casing (1), lower casing (2), flexible pull rod (3), bearing (4), screw pump (5), drive motor (6), drive mechanism (7) and alloy bit (8), flexible pull rod (3) are connected with the top of last casing (1), go up casing (1) and rotate with lower casing (2) through bearing (4) and be connected, drive motor (6) are located in last casing (1), drive motor (6) rotate through casing (2) under drive mechanism (7) drive, screw pump (5) pass bearing (4) intercommunication last casing (1) and lower casing (2), the bottom of casing (2) is located down in alloy bit (8).

2. The vertical shield rock drill bit for construction foundation engineering as claimed in claim 1, wherein: drive mechanism (7) are including support (71), pinion (72), drive bearing (73) and internal gear dish (74), on casing (2) were located down in support (71), on drive bearing (73) were located support (71), the output shaft of drive motor (6) passed the bottom of last casing (1), and was connected with drive bearing (73), on the output shaft of drive motor (6) was located in pinion (72) cover, internal gear dish (74) and casing (2) rigid coupling down, and with pinion (72) meshing, casing (2) rotated under pinion (72) passed through internal gear dish (74) drive.

3. The vertical shield rock drill bit for construction foundation engineering as claimed in claim 1, wherein: the screw pump (5) comprises a drainage motor (51), a pump pipe (52), a slurry outlet (53), a suction cavity (54) and a liquid leakage prevention cover (55), wherein the drainage motor (51) is arranged at the top end of the pump pipe (52), the pump pipe (52) is communicated with the slurry outlet (53), the slurry outlet (53) penetrates through the upper shell (1) to discharge slurry outwards, the pump pipe (52) penetrates through the bearing (4) to be communicated with the suction cavity (54) arranged in the lower shell (2), the liquid leakage prevention cover (55) is arranged in the upper shell (1) to form a liquid leakage prevention cavity together with the upper shell (1), and the bearing (4) is arranged in the liquid leakage prevention cavity.

4. The vertical shield rock drill bit for construction foundation engineering as claimed in claim 3, wherein: the utility model discloses a water pump, including pump line (52), pump line (52) overcoat is equipped with inlet tube (56), inlet tube (56) pass bearing (4) intercommunication upper casing (1) and lower casing (2), be equipped with water inlet (561) on inlet tube (56), the bottom of water inlet (561) is connected with the upper end of inlet tube (56), upper casing (1) is passed on the top of water inlet (561), and the clear water reaches lower casing (2) through inlet tube (56) of flowing through water inlet (561).

5. The vertical shield rock drill bit for construction foundation engineering as claimed in claim 4, wherein: the alloy drill bit (8) comprises a first drill bit (81) and a second drill bit (82), the first drill bit (81) is arranged in the center of the bottom end of the lower shell (2), and the second drill bit (82) is arranged on the periphery of the lower shell (2).

6. The vertical shield rock drill bit for construction foundation engineering as claimed in claim 5, wherein: the bottom surface of the lower shell (2) is of a conical structure with the center protruding outwards, and the bottom surface of the lower shell (2) is provided with a slag hole (21).

7. The vertical shield rock drill bit for construction foundation engineering as claimed in claim 6, wherein: be equipped with blade disc (22) on the bottom surface of lower casing (2), be equipped with a plurality of hobbing cutter mechanisms (221) on blade disc (22).

8. The vertical shield rock drill bit for construction foundation engineering as claimed in claim 7, wherein: the hob mechanism (221) comprises a single-edge hob (2211), a hob shaft (2212) and an end cover (2213), the plurality of single-edge hobs (2211) are sleeved on the hob shaft (2212), and the end cover (2213) is arranged on two sides of the single-edge hob (2211).

9. The vertical shield rock drill bit for construction foundation engineering as claimed in claim 1, wherein: the top end of the upper shell (1) is provided with a reinforcing rib (11), and the reinforcing rib (11) is connected with the telescopic pull rod (3).