CN107524412B

CN107524412B - Rotary digging equipment for building

Info

Publication number: CN107524412B
Application number: CN201710880911.1A
Authority: CN
Inventors: 冷伟
Original assignee: Hunan Dongxin New Machinery Technology Co ltd
Current assignee: HUNAN DONGXIN NEW MACHINERY TECHNOLOGY Co.,Ltd.
Priority date: 2017-09-26
Filing date: 2017-09-26
Publication date: 2020-12-18
Anticipated expiration: 2037-09-26
Also published as: CN111535738A; CN111535738B; CN107524412A

Abstract

The invention discloses a building rotary excavating device which comprises a machine body, a moving device arranged at the lower part of the machine body, a drill arm, a hoisting device matched with the drill arm, a drill bit driving piece used for driving the drill bit to rotate and a vibrating device arranged between the drill bit driving piece and the drill bit; the vibration device comprises a protective shell and a vibration piece arranged in the protective shell, the drill boom penetrates into the protective shell and then is connected with the vibration piece, and the drill bit penetrates through the protective shell and then is connected with the vibration piece; a first sealing structure is arranged between the protective shell and the drill boom, and a second sealing structure is arranged between the protective shell and the drill bit. The invention is provided with the vibrating device, so that the drill bit can synchronously vibrate in the high-speed rotating process, the drilling strength is high, the aid of other tools such as a down-the-hole drill is not needed, and the construction efficiency is high.

Description

Rotary digging equipment for building

Technical Field

The invention belongs to the technical field of outdoor buildings, and particularly relates to a rotary excavating device for a building.

Background

The pile foundation is a deep foundation consisting of piles and pile bearing platforms connected with the pile tops or a single pile foundation connected with the pile foundation through columns. In high-rise buildings, pile foundations are widely applied. Before the pile foundation is buried, the through groove needs to be excavated into the ground by a rotary excavating machine, column holes for accommodating the pile foundation are excavated, and then the required pile foundation is formed by pouring concrete.

The drill bit of the existing rotary drilling machine is driven to rotate by the driving piece and then excavates the stratum, under the structure, when the bottom layer is hard, the drill bit cannot directly drill, so that a hole needs to be drilled in advance by using tools such as a down-the-hole drill and the like, then the drill bit is used for rotary drilling, the consumed time is long, and the working efficiency is low.

Disclosure of Invention

The invention provides the building rotary excavating equipment with strong soil breaking capacity and high working efficiency in order to overcome the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: a building rotary excavating device comprises a machine body, a moving device arranged at the lower part of the machine body, a drill arm, a hoisting device matched with the drill arm, a drill bit driving piece used for driving the drill bit to rotate and a vibrating device arranged between the drill bit driving piece and the drill bit; the method is characterized in that: the vibration device comprises a protective shell and a vibration piece arranged in the protective shell, the drill boom penetrates into the protective shell and then is connected with the vibration piece, and the drill bit penetrates through the protective shell and then is connected with the vibration piece; a first sealing structure is arranged between the protective shell and the drill arm, and a second sealing structure is arranged between the protective shell and the drill bit; the drill bit comprises a drill part and a drill cutter, wherein the drill part is arranged in a conical shape, and the drill cutter is arranged at the end part of the drill part; a plurality of impact parts are distributed on the outer side wall of the drilling part at intervals. According to the invention, the vibrating device is arranged, so that the drill bit can synchronously vibrate in the process of high-speed rotation, the drill bit has larger destructive power during drilling, the drill bit can easily drill a bottom layer with higher hardness without the help of other tools such as a down-the-hole drill and the like, the time of a plurality of steps such as stopping the drill bit, replacing the down-the-hole drill, drilling the down-the-hole drill, taking out the down-the-hole drill, starting the drill bit and the like is saved, the waste of construction time is greatly reduced, the working efficiency is improved, the construction period is shortened, and the construction efficiency is improved; the drill driving piece does not need to be started or stopped frequently, so that the drill driving piece is not easy to damage, the drill arm is not easy to break, and the service life is prolonged; through the arrangement of the drill cutter, the drill bit can drill into the ground more easily and can drill holes more quickly, and the drilling efficiency is improved; through the setting of striking portion for the drill bit can strike peripheral soil layer when the vibration, makes drilling operation easier.

Furthermore, the upper part of the protective shell is provided with a through hole for the drill arm to pass through, and the first sealing structure comprises a cylinder part formed by upwards extending the inner wall of the through hole, a sealing part arranged between the cylinder part and the drill arm and a pressing part matched with the cylinder part; the sealing element is compressed through the compression piece, so that the inner side wall and the outer side wall of the sealing element are tightly attached to the drill boom and the cylinder part respectively, the sealing effect is good, muddy water in the drilling process is effectively prevented from entering the protective cover body from the joint of the inner side wall and the outer side wall, the situation that the vibration piece is damaged due to water entering is prevented, and the service life of equipment is prolonged.

Furthermore, a through groove for the cylinder part to pass through is arranged on the pressing part, and the inner wall of the through groove is obliquely arranged, so that a large opening end and a small opening end are formed at two ends of the through groove respectively; preferably, the aperture of the small-opening end is equal to the sum of the radius of the drill boom and the thickness of the cylinder part, so that when the cylinder part is pressed by rotating the pressing part to the small-opening end, the cylinder part is completely pressed on the drill boom, the sealing element is extruded to a great extent, the sealing element and the drill boom, and the sealing element and the cylinder part can be maintained in a very tight state, and the sealing effect is good; and because the structure that is similar to interior outer cover realizes compresses tightly, even long-term the use, the condition that also can not appear becoming flexible between the two to guarantee that the condition of weeping can not appear between the two all the time.

Furthermore, the pressing piece is in threaded connection with the cylinder part, and two V-shaped open grooves are symmetrically formed in the cylinder part; the upper part of the cylinder part can deform to a certain extent through the arrangement of the V-shaped open slot, so that the sealing element is easier to install; and when compressing tightly the piece and compressing tightly, the section of thick bamboo portion can be deformed to the state of minimum internal diameter, further strengthens sealing performance, improve equipment's life.

Furthermore, the end face of the large opening end extends upwards to form a circle of sealing boss, and a flexible layer is arranged on the inner wall of the sealing boss; effectively prevent that silt from entering to compressing tightly between piece and the section of thick bamboo portion from the clearance between macrostoma end and the section of thick bamboo portion to effectively prevent that silt from filling to the clearance between screw thread between them, prevent to compress tightly the unable condition of twisting soon of piece and get off, it is very convenient all the time to compress tightly a dismouting, is convenient for change and maintain the inside vibrating piece of protective housing.

Further, the end face of the small end extends downwards to form a circle of sealing edge, and a sealing layer is arranged on the inner wall of the sealing edge; effectively prevent that silt from the die end and the clearance between the section of thick bamboo portion from entering into compressing tightly between piece and the section of thick bamboo portion to effectively prevent that silt from filling to the clearance between screw thread between them, prevent to compress tightly the unable condition of twisting soon of piece and twist, it is very convenient all the time to compress tightly a dismouting, is convenient for change and maintain the inside vibrating piece of protective housing.

Further, a first ring groove matched with the sealing element is formed in the inner wall of the cylinder part, and a second ring groove matched with the sealing element is formed in the drill arm; the sum of the depths of the first ring groove and the second ring groove is h; the thickness of the sealing element is greater than h; under this kind of structure, when section of thick bamboo portion by compressing tightly completely on the drill boom surface, the sealing member will be in by highly extruded state, and be interference fit between it and first annular, the second annular, the laminating between sealing member and first annular, the second annular inner wall is effectual, guarantees to realize between section of thick bamboo portion and the drill boom well, the leakproofness.

Further, the second sealing structure comprises an annular boss arranged on the outer wall of the drill bit, a flexible sealing layer arranged on the lower surface of the annular boss and a connecting piece used for locking the protective shell and the annular boss; through the setting of connecting piece, the part that links to each other with protective housing and annular convex part is tightly pressed on annular convex part, effectively prevents the condition that leaks from appearing in junction between them, prolongs vibrating member's life.

Further, the impact part is arranged in a triangular structure; the pointed end of the impact part is arranged outwards, so that the destructive power of the drill bit on the ground when the drill bit drills the ground is enhanced, and the drill bit can quickly drill a hard soil layer.

In summary, the invention has the following advantages: the vibrating device is arranged, so that the drill bit can synchronously vibrate in the high-speed rotating process, the drill bit has larger destructive power during drilling, the help of other tools such as a down-the-hole drill and the like is not needed, the waste of construction time is greatly reduced, the working efficiency is improved, the construction period is shortened, and the construction efficiency is improved; the drill driving piece does not need to be started or stopped frequently, so that the drill driving piece is not easy to damage, the drill arm is not easy to break, and the service life is prolonged; through the cooperation of boring cutter and striking portion for it is easier when the drill bit bores the soil layer soon, improves and digs efficiency soon.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a partial schematic view of the present invention.

Fig. 3 is a cross-sectional view of fig. 2.

Fig. 4 is a partially enlarged view of fig. 3.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

As shown in fig. 1-4, a building rotary excavating device comprises a machine body 1, a moving device 2 arranged at the lower part of the machine body, a drill boom 3, a hoisting device 4 matched with the drill boom, a drill bit 5, a drill bit driving part 6 for driving the drill bit to rotate, and a vibrating device; the moving device 2 is two crawler belts arranged at the lower part of the machine body 1, and the crawler belts can be directly purchased from the market and are not described again; the drilling boom 3 and the drill bit 5 are both made of stainless steel, the hoisting device 4 comprises a steel wire rope 41 and a winch arranged on the machine body, one end of the steel wire rope 41 is connected with the drilling boom, and the other end of the steel wire rope is connected with the winch; the winch and the steel wire rope can be directly purchased from the market; the drill bit driving part 6 is a motor directly purchased from the market, and an output shaft of the motor is connected with the drill boom; the vibration device is arranged between the drill bit driving piece and the drill bit, the vibration device comprises a protective shell 71 made of stainless steel and a vibration piece 72 arranged in the protective shell, the vibration piece 72 is a vibration exciter directly purchased in the market, and the specific model is not limited; the upper part of the protective shell 71 is provided with a through hole 711 for a drill boom to pass through, the lower part of the protective shell 71 is provided with an opening for a drill bit 5 to pass through, the lower end of the drill boom 3 passes through the through hole, penetrates into the protective shell 71 and then is connected with the vibrating piece 72, and the upper end of the drill bit 5 passes through the opening, passes through the protective shell 71 and then is connected with the vibrating piece 72; therefore, when the drill boom drives the drill bit to rotate, the vibration piece is started to realize the vibration of the drill bit in the rotating process, the ground drilling strength of the drill bit is improved, and the drill bit can conveniently drill into a soil layer even when the hard soil layer is dug in a rotary mode.

Further, the drill bit 5 comprises a drill part 51 arranged in a conical shape and a drill blade 52 arranged at the end of the drill part; the two drilling cutters 52 are arranged in an arc shape, so that the drilling cutters can conveniently drill into a soil layer; preferably, a plurality of striking portions 511 are uniformly distributed on the outer side wall of the drilling portion 51 at intervals, the striking portions 511 are arranged to be triangular structures, and the pointed ends of the striking portions are arranged outwards, so that the destructive power of the drill bit on the ground during drilling is enhanced, and the drill bit can quickly drill a hard soil layer.

In the rotary drilling process, basically all muddy water is mixed with the muddy water, in order to prevent the muddy water from entering the vibration exciter, a first sealing structure is arranged between the protective shell 71 and the drill arm 3, and a second sealing structure is arranged between the protective shell 71 and the drill bit 5; preferably, the inner wall of the through groove 831 is inclined, so that a large opening end 832 and a small opening end 833 are respectively formed at two ends of the through groove 831, and the inner radius of the small opening end 833 is equal to the sum of the thickness of the barrel part and the radius of the part of the drill boom penetrating into the through hole, so that when the pressing piece is screwed to the barrel part and penetrates into the small opening end, the small opening end can completely press the barrel part onto the drill boom; preferably, the cylindrical portion 81 is symmetrically provided with two V-shaped opening grooves 811, so that the cylindrical portion can deform to a certain extent, and the sealing element is safer to mount; and the V-shaped open slot 811 enables the inner diameter of the barrel part to be slightly larger than the outer diameter of the drill boom, so that the drill boom can conveniently penetrate through the through hole, and meanwhile, the barrel part can be completely pressed on the outer surface of the drill boom when the pressing part is locked.

The sealing element is an annular pad made of rubber, a first annular groove 812 matched with the sealing element is arranged on the inner wall of the barrel part 81, and a second annular groove 31 matched with the sealing element is arranged on the drill arm 3; preferably, the sum of the depths of the first annular groove 812 and the second annular groove 31 is h, and the thickness of the sealing element 82 is greater than h, so that when the barrel part is locked to be completely attached to the outer surface of the drill arm by the pressing element, the sealing element is in interference fit with the first annular groove and the second annular groove, and the sealing effect is good.

Further, the upper end of the large-opening end 832 extends upwards to form a circle of sealing boss 834, a flexible layer 835 is arranged on the inner wall of the sealing boss 834, the flexible layer 835 is made of rubber and is bonded on the inner wall of the sealing boss 834, the lower end of the small-opening end 833 extends downwards to form a circle of sealing edge 836, a sealing layer 837 is arranged on the inner wall of the sealing edge 836, and the sealing layer 837 is made of rubber and is bonded on the sealing edge 836; through the setting of flexible layer and sealing layer, prevent effectively that muddy water from entering to compressing tightly between piece and the section of thick bamboo portion, prevent that the screw thread between the two from being filled up by silt.

The second sealing structure comprises an annular boss 91, a flexible sealing layer 92 and a connecting piece 93, wherein the annular boss 91 is formed by directly extending the outer wall of the drill bit outwards, and the outer diameter of the annular boss 91 is larger than the diameter of an opening at the lower part of the protective shell; flexible sealing layer 92 is made for rubber, just flexible sealing layer 92 locates on the lower surface of annular boss, connecting piece 93 is the screw of direct purchase on the market, and after the drill bit penetrated to protective housing, protective housing's inner wall and the flexible sealing layer 92 of annular boss lower surface inconsistent, later after passing protective housing and flexible sealing layer 92 with the screw, screw in to annular boss 91 in, with protective housing locking on annular boss, realize the sealed cooperation between protective housing lower part and the drill bit.

It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Claims

1. A building rotary excavating device comprises a machine body (1), a moving device (2) arranged at the lower part of the machine body, a drill arm (3), a hoisting device (4) matched with the drill arm, a drill bit (5), a drill bit driving piece (6) used for driving the drill bit to rotate and a vibrating device arranged between the drill bit driving piece and the drill bit; the method is characterized in that: the vibrating device comprises a protective shell (71) and a vibrating piece (72) arranged in the protective shell, the drill boom (3) penetrates into the protective shell (71) and then is connected with the vibrating piece (72), and the drill bit (5) penetrates through the protective shell (71) and then is connected with the vibrating piece (72); a first sealing structure is arranged between the protective shell (71) and the drill boom (3), and a second sealing structure is arranged between the protective shell (71) and the drill bit (5); the drill bit (5) comprises a drill part (51) which is arranged in a conical shape and a drill blade (52) which is arranged at the end part of the drill part; the two drill cutters (52) are arranged in an arc shape, and a plurality of impact parts (511) are distributed on the outer side wall of the drill part (51) at intervals; a through hole (711) for the drill arm to pass through is formed in the upper part of the protective shell (71), and the first sealing structure comprises a cylinder part (81) formed by upward extension of the inner wall of the through hole, a sealing part (82) arranged between the cylinder part and the drill arm and a pressing part (83) matched with the cylinder part; a through groove (831) for the barrel part to penetrate through is formed in the pressing piece (83), the inner wall of the through groove (831) is obliquely arranged, and a large opening end (832) and a small opening end (833) are formed at two ends of the through groove (831) respectively; the pressing piece (83) is in threaded fit with the cylinder part (81), and two V-shaped open grooves (811) are symmetrically arranged on the cylinder part (81); a first annular groove (812) matched with the sealing element is formed in the inner wall of the barrel part (81), and a second annular groove (31) matched with the sealing element is formed in the drill arm (3); the sum of the depths of the first ring groove (812) and the second ring groove (31) is h; the thickness of the seal (82) is greater than the h; a gap is formed between the inner surface of the barrel part and the outer surface of the drill arm; the second sealing structure comprises an annular boss (91) arranged on the outer wall of the drill bit, a flexible sealing layer (92) arranged on the lower surface of the annular boss and a connecting piece (93) used for locking the protective shell and the annular boss, wherein the end surface of the large-opening end (832) extends upwards to form a circle of sealing boss (834), a flexible layer (835) is arranged on the inner wall of the sealing boss (834), the end surface of the small-opening end (833) extends downwards to form a circle of sealing edge (836), a sealing layer (837) is arranged on the inner wall of the sealing edge (836), and the impacting part (511) is in a triangular structure; the annular boss (91) is formed by directly extending the outer wall of the drill bit outwards, and the outer diameter of the annular boss (91) is larger than the diameter of the lower opening of the protective shell; the flexible sealing layer (92) is made of rubber, and the flexible sealing layer (92) is arranged on the lower surface of the annular boss; after the drill bit penetrates into the protective shell, the inner wall of the protective shell is abutted to the flexible sealing layer (92) on the lower surface of the annular boss, and then the screw penetrates through the protective shell and the flexible sealing layer (92) and is screwed into the annular boss (91) to lock the protective shell on the annular boss.