CN213143055U - Drill bit of rotary drilling machine - Google Patents

Abstract

The utility model relates to a construction technical field discloses a dig quick-witted drill bit soon, including a shaft section of thick bamboo, fixed plate and connector, the connector is located the top of a shaft section of thick bamboo, the bottom of a shaft section of thick bamboo is equipped with the first tooth that bores of a plurality of, each the end-to-end combination of first brill tooth becomes the ring working face, the fixed plate is located the inside of a shaft section of thick bamboo, the fixed plate is equipped with a plurality of second and bores the tooth, each the end-to-end combination of tooth becomes circular working face is bored to the second, the ring working face is located the below of circular working face. Through first brill tooth contacts with the bottom plate earlier, and the ring working face of its formation can drill out the ring channel, right the drill bit plays the guide effect, avoids creeping into the in-process skew that appears, the rethread circular working face that the tooth formed is bored to the second is broken to old tubular pile, and the old tubular pile is chiseled in the segmentation, has better stability and security, construction convenience and greatly reduced construction cost.

Description

Drill bit of rotary drilling machine

Technical Field

The utility model relates to a construction technical field especially relates to a dig quick-witted drill bit soon.

Background

In engineering construction, it is often necessary to demolish old buildings and then build more up-to-date buildings in the old field, during which the old piles need to be demolished. At present, the method is commonly used for extracting the waste pipe piles on the foundation by using a pile extractor, and then reaming or backfilling the old pile holes. But to some miniature construction sites, it is low to be equipped with one set of equipment rate of utilization of pulling out specially, and it is big to extract the construction degree of difficulty with whole old stake moreover, need do a lot of safety work in advance, and construction cost is high.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: a rotary excavating machine drill with high efficiency and low cost is provided.

In order to solve the technical problem, the utility model provides a dig quick-witted drill bit soon, including a shaft section of thick bamboo, fixed plate and connector, the connector is located the top of a shaft section of thick bamboo, the bottom of a shaft section of thick bamboo is equipped with the first tooth that bores of a plurality of, each the end-to-end composition of first tooth that bores makes up into the ring working face, the fixed plate is located the inside of a shaft section of thick bamboo, the fixed plate is equipped with a plurality of second and bores the tooth, each the end-to-end composition of tooth is bored to the second makes up into circular working face, the ring working face is located circular working face's below.

Preferably, the ends of two adjacent first drill teeth are arranged in opposite directions, wherein the end of one first drill tooth faces the outer side of the shaft barrel, and the end of the other first drill tooth faces the inner side of the shaft barrel.

Preferably, the number of the fixing plates is two or more, one end of each fixing plate is connected with the inner wall of the shaft cylinder, and the other end of each fixing plate is connected with each other and is located at the center of the shaft cylinder.

Preferably, the number of the fixing plates is four, and the fixing plates are combined into a cross-shaped structure.

Preferably, the axial direction of the first drill tooth, the axial direction of the second drill tooth and the fixing plate are arranged obliquely towards the same rotating direction.

As the preferred scheme, be equipped with between connector and the fixed plate and hold the chamber.

Preferably, a connecting plate is arranged at the top end of the shaft cylinder, the connector is arranged on the connecting plate, and the connecting plate is provided with a plurality of through holes communicated with the accommodating cavities.

Preferably, the circular working surface is parallel to the circular working surface.

Preferably, the first drill teeth are welded to the shaft cylinder, and the second drill teeth are welded to the fixing plate.

Preferably, the shaft cylinder is a cylinder, and the fixing plate is a strip-shaped plate.

The utility model provides a rotary drilling machine drill bit compares with prior art, and its beneficial effect lies in:

the utility model discloses in utilize the connector is connected with the machine of digging soon, realizes that drive drill bit is rotatory, through first brill tooth contacts with the bottom plate earlier, and the ring channel can be drilled out to the ring working face of its formation, right the drill bit plays the guide effect, avoids creeping into the in-process and squints, the rethread circular work face that the tooth formed is bored to the second is broken in the face of old tubular pile, and the old tubular pile is chiseled in the segmentation, has better stability and security, and this drill bit cooperation is conventional digs soon and just can abolish old tubular pile, construction convenience and greatly reduced construction cost.

Drawings

Fig. 1 is a schematic top view of a rotary excavating machine according to a preferred embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of a rotary excavating machine drill according to a preferred embodiment of the present invention.

Fig. 3 is a schematic perspective view of a drill bit of a rotary drilling machine according to a preferred embodiment of the present invention.

Fig. 4 is another perspective view of a rotary excavating machine according to a preferred embodiment of the present invention.

In the figure: 1. a shaft cylinder; 2. a fixing plate; 3. a connector; 4. a first drill tooth; 5. a second drill tooth; 6. an accommodating chamber; 7. a connecting plate; 8. and a through hole.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "connected," "connected," and "fixed" used in the present invention should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral body; the connection can be mechanical connection or welding connection; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1 to 4, the utility model discloses preferred embodiment provides a dig quick-witted drill bit soon, including a shaft section of thick bamboo 1, fixed plate 2 and connector 3, connector 3 is located the top of a shaft section of thick bamboo 1, the bottom of a shaft section of thick bamboo 1 is equipped with the first brill tooth 4 of a plurality of, each the end-to-end combination of first brill tooth 4 becomes the ring working face, fixed plate 2 is located the inside of a shaft section of thick bamboo 1, fixed plate 2 is equipped with a plurality of second and bores tooth 5, each the end-to-end combination of second brill tooth 5 becomes circular working face, the ring working face is located the below of circular working face.

Dig quick-witted drill bit soon based on foretell technical characteristic utilizes connector 3 is connected with digging the machine soon, realizes that drive drill bit is rotatory, through first brill tooth 4 contacts with the bottom plate earlier, and the ring channel can be drilled out to the ring working face of its formation, right the drill bit plays the guide effect, avoids creeping into the in-process skew of appearing, the rethread the circular working face that 5 formation of second brill tooth carries out the breakage to old tubular pile, and the old tubular pile is dug in the segmentation, has better stability and security, and this drill bit cooperation is conventional digs the machine soon and just can abolishes old tubular pile, construction convenience and greatly reduced construction cost.

In this embodiment, as shown in fig. 1 and 4, the ends of two adjacent first drilling teeth 4 are arranged in opposite directions, one end of one first drilling tooth 4 faces the outer side of the shaft barrel 1, and the other end of the other first drilling tooth 4 faces the inner side of the shaft barrel 1, and the area of the working surface of the circular ring is enlarged by using the placing position of the first drilling tooth 4, so that the circular ring which is dug out can accommodate the shaft barrel 1, and the first drilling tooth 4 with a smaller diameter can be adopted, so that the first drilling tooth 4 can be easily drilled and broken. Wherein, each first drilling tooth 4 is distributed in a circumferential array, and each second drilling tooth 5 is distributed in a linear array.

In order to improve the crushing efficiency of the old tubular pile, the number of the fixing plates 2 is two or more, in this embodiment, the number of the fixing plates 2 is 4, the fixing plates are combined into a cross structure, one end of each fixing plate 2 is connected with the inner wall of the shaft barrel 1, and the other end of each fixing plate 2 is connected with each other and is located at the center of the shaft barrel 1, so that the second drilling teeth 5 form a circular working surface.

Further, the axial of first brill tooth 4 the axial of second brill tooth 5 with fixed plate 2 sets up towards same direction of rotation slope, and is also unified towards clockwise or anticlockwise, and the drill bit of being convenient for creeps into and breaks, works as the drill bit blocks when creeping into, but reverse direction drive the drill bit makes first brill tooth 4 or second brill tooth 5 breaks away from the screens point, and the positive direction drive again the drill bit creeps into and breaks, so relapse to the destruction of old tubular pile is realized, wherein, the axial of first brill tooth 4 the axial of second brill tooth 5 with fixed plate 2 is 30 to 80 for the inclination scope of horizontal plane.

In this embodiment, connector 3 with be equipped with the chamber 6 that holds that is used for holding the disintegrating slag between fixed plate 2 second brill tooth 5 carries out the broken back to old tubular pile, through the slope setting the guide of fixed plate 2 can get into fast hold chamber 6.

In this embodiment, as shown in fig. 2 and 3, the top of beam barrel 1 is equipped with connecting plate 7, connector 3 is located on the connecting plate 7, be convenient for connector 3 control beam barrel 1 rotates, connector 3 is equipped with the annular spread groove that is connected with the machine of digging soon, connecting plate 7 be equipped with a plurality ofly with hold the communicating through-hole 8 in chamber 6, the accessible through-hole 8 is observed hold the inside condition in chamber 6, when the disintegrating slag is full of when holding chamber 6, promote the drill bit clears up the disintegrating slag.

In this embodiment, the circular ring working surface is parallel to the circular working surface, so as to ensure that the stress of each first drill tooth 4 and each second drill tooth 5 is more balanced.

In this embodiment, first brill tooth 4 with be welded connection between the shaft section of thick bamboo 1, second brill tooth 5 with be welded connection between the fixed plate 2, it is convenient to make, and low in production cost, and construction unit can be according to the actual conditions on building site, right the drill bit improves, the external diameter size of the old tubular pile that also obtains in advance selects suitable specification the shaft section of thick bamboo 1 makes into the drill bit, generally speaking, the diameter of shaft section of thick bamboo 1 need be greater than the diameter of old tubular pile.

In this embodiment, the shaft tube 1 is a cylinder, the first drill teeth 4 are welded along the edge of the shaft tube 1, the fixing plate 2 is a strip-shaped plate, and the second drill teeth 5 are welded along the edge of the fixing plate 2.

To sum up, the embodiment of the utility model provides a dig quick-witted drill bit soon, its earlier utilizes first brill tooth 4 bores and digs out the ring channel, is used for the guide 1 vertical drilling down of beam barrel avoids appearing the skew, recycles second on the fixed plate 2 bores tooth 5 and carries out powerful breakage to old tubular pile to realize the segmentation chiseling, uses together with current dig quick-witted integration soon, can adopt the not drill bit specification of equidimension to be under construction. Therefore, special pile pulling equipment is not required to be additionally arranged, the holding cost, the leasing cost and the transition cost for pulling out the old tubular pile are reduced, the tubular pile can be taken at any time, and the construction cost is greatly reduced.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides a dig quick-witted drill bit soon, its characterized in that includes a shaft section of thick bamboo, fixed plate and connector, the connector is located the top of a shaft section of thick bamboo, the bottom of a shaft section of thick bamboo is equipped with the first tooth that bores of a plurality of, each the end-to-end composition of the first tooth that bores makes up into the ring working face, the fixed plate is located the inside of a shaft section of thick bamboo, the fixed plate is equipped with a plurality of second and bores the tooth, each the end-to-end composition of second brill tooth makes up into circular working face, the ring working face is located circular working face's below.

2. The rotary excavating machine drill bit according to claim 1 wherein the tips of adjacent ones of said first drill teeth are disposed in opposite directions with one of said first drill teeth facing outwardly of said barrel and the other of said first drill teeth facing inwardly of said barrel.

3. The rotary excavating machine drill according to claim 1, wherein the number of the fixing plates is two or more, one end of each of the fixing plates is connected to the inner wall of the shaft cylinder, and the other end of each of the fixing plates is connected to each other and located at the center of the shaft cylinder.

4. The rotary excavating machine drill according to claim 3 wherein the number of said fixing plates is four, and each of said fixing plates is combined into a cross-shaped structure.

5. The rotary excavating machine drill according to claim 3 wherein the axial direction of the first drill bit, the axial direction of the second drill bit and the fixing plate are inclined in the same rotational direction.

6. The rotary excavating machine drill according to claim 1 wherein a receiving cavity is provided between the connecting head and the fixing plate.

7. The rotary excavating machine drill according to claim 6 wherein the top end of the shaft barrel is provided with a connecting plate, the connecting head is provided on the connecting plate, and the connecting plate is provided with a plurality of through holes communicating with the accommodating cavity.

8. The rotary excavating machine drill bit according to claim 1 wherein said annular working surface is parallel to said circular working surface.

9. The rotary excavating machine drill according to any one of claims 1 to 8 wherein said first drill tooth is connected to said shaft by welding and said second drill tooth is connected to said fixed plate by welding.

10. The rotary excavating machine drill according to any one of claims 1 to 8 wherein the barrel is a cylinder and the fixing plate is a strip.

Images