CN219691481U

CN219691481U - Split two-flap bucket rotary drilling bit

Info

Publication number: CN219691481U
Application number: CN202320682538.XU
Authority: CN
Inventors: 李毅
Original assignee: Changsha Golden Drill Machinery Co ltd
Current assignee: Changsha Golden Drill Machinery Co ltd
Priority date: 2023-03-30
Filing date: 2023-03-30
Publication date: 2023-09-15
Anticipated expiration: 2033-03-30

Abstract

The utility model discloses a split two-valve bucket rotary drilling bit, which relates to the technical field of rotary drilling bits and comprises a connecting device, a fixed barrel body, a movable barrel body and a hinge device; the connecting device is used for connecting the rotary digging machine; the fixed barrel body is a half barrel body and is fixedly connected with the connecting device; the movable barrel body is a half barrel body, and the movable barrel body and the fixed barrel body are arranged in a relative manner, so that the movable barrel body and the fixed barrel body are enclosed to form a complete barrel body; the hinge device is arranged on the fixed barrel body and is positioned at one end of the fixed barrel body, which is close to the connecting device, and the hinge device is connected with the fixed barrel body and the movable barrel body, so that the movable barrel body can be turned over and opened. According to the split type two-flap bucket rotary drilling bit, the structure between the connecting device and the bucket body is stable, the bucket body is not easy to crack and falls into the pile hole, and the maintenance risk is reduced.

Description

Split two-flap bucket rotary drilling bit

Technical Field

The utility model relates to the technical field of rotary drilling bits, in particular to a split two-valve bucket rotary drilling bit.

Background

The rotary drilling rig is a construction process suitable for pore-forming operation in building foundation engineering. The drilling tool is widely used for foundation construction projects such as municipal construction, highway bridges, high-rise buildings and the like, is matched with different drilling tools, and is suitable for dry (short spiral) or wet (rotary bucket) and rock stratum (core drill) pore-forming operation.

Publication number CN210033292U discloses a bottomless two-flap bucket rotary drilling bit, the connection square box is connected with the barrel body of the rotary drilling bit through a hinge structure (the reference structure is shown in fig. 1), which has the following defects:

1. the middle sleeve of the hinge is welded with the connecting square box, the welding part is small, the welding seam is easy to crack under strong torsion, the connecting square box is separated from the barrel body of the rotary drilling drill, the whole barrel body is required to be manually salvaged in the pile hole, and the pile hole is scrapped when serious.

2. The hinge edge sleeve is welded with the top of the barrel body, the weldable part is small, the welding seam is easy to wear and cause cracking, the barrel body and the hinge edge sleeve are separated and fall off, and the maintenance cost of the drill bit is increased.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the split type two-flap bucket rotary drilling bit is provided, the structure between the connecting device and the bucket body is stable, the bucket body is not easy to crack and falls into the pile hole, and maintenance risks are reduced.

According to the embodiment of the utility model, the split two-valve bucket rotary drilling bit comprises: the device comprises a connecting device, a fixed barrel body, a hinge device and a movable barrel body;

the connecting device is used for connecting the rotary digging machine;

the fixed barrel body is a half barrel body and is fixedly connected with the connecting device;

the hinge device is arranged on the fixed barrel body and is positioned at one end of the fixed barrel body, which is close to the connecting device;

the movable barrel body is a half barrel body and is connected with the hinge device, so that the movable barrel body can be turned over and opened;

the movable barrel body comprises an opening state and a closing state, is arranged opposite to the fixed barrel body when in the closing state, and is enclosed with the fixed barrel body to form a complete barrel body.

The split two-valve bucket rotary drilling bit provided by the embodiment of the utility model has at least the following beneficial effects: the connecting device is directly connected with the fixed barrel body, the connecting structure is more reliable, the structural strength is higher, and the hinge device is transferred between the fixed barrel body and the movable barrel body, so that the movable barrel body can be opened towards the outer side to release the internal accumulated soil. When the rotary drilling operation is performed, most of the torque of the soil body is directly transmitted to the connecting device through the fixed barrel body instead of the hinge device, so that the risk of fracture of the welding seam at the connecting position is reduced.

According to some embodiments of the utility model, the hinge device comprises a middle sleeve, a connecting shaft and two side sleeves, wherein the two side sleeves are embedded in the fixed barrel body in a penetrating manner, the middle sleeve is arranged between the two side sleeves in a matching manner, the middle sleeve is connected with the end part of the movable barrel body, and the connecting shaft is arranged in the side sleeves and the middle sleeve in a penetrating manner.

According to some embodiments of the utility model, a first connecting rib plate is arranged between the fixed barrel body and the edge sleeves, the first connecting rib plate is arranged on the inner side wall of the fixed barrel body, and the first connecting rib plate is respectively connected with the side walls of the two edge sleeves.

According to some embodiments of the utility model, the connecting device comprises a square box and a connecting plate, the connecting plate is arranged at the bottom of the square box, the connecting plate cover is arranged on the end part of the fixed barrel body and is connected with the fixed barrel body, and a plurality of through connecting shaft holes are formed in the side wall of the square box.

According to some embodiments of the utility model, a plurality of second connecting rib plates are further arranged on one side, facing the fixed barrel body, of the connecting plate, the second connecting rib plates extend into the fixed barrel body, and the second connecting rib plates are connected with the inner side wall of the fixed barrel body.

According to some embodiments of the utility model, the square box comprises a box body and a reinforcing frame, wherein the box body is hollow, the upper part of the box body is opened for the matching insertion of a drill rod of the rotary drilling machine, the connecting shaft hole is formed in the peripheral side of the box body, the reinforcing frame is sleeved on the upper part of the box body, and the upper end face of the reinforcing frame is flush with the upper end face of the box body.

According to some embodiments of the utility model, the arrangement direction of the connecting shaft holes is parallel to the axial direction of the square box.

According to some embodiments of the utility model, a reinforcing plate is arranged on the side wall of the square box, and the reinforcing plate is attached to the connecting shaft hole so as to increase the thickness of the connecting shaft hole.

According to some embodiments of the utility model, a plurality of stoppers are provided on the inner side wall of the fixed tub, and the stoppers are located at the joint surface of the fixed tub and the movable tub, so that the stoppers can contact with the inner wall of the movable tub.

According to some embodiments of the utility model, the fixed barrel body and the movable barrel body are respectively provided with a plurality of wear-resistant blocks on outer side walls of the fixed barrel body and the movable barrel body, which are far away from one end of the connecting device, and the plurality of wear-resistant blocks are distributed along the circumferential direction of the fixed barrel body and the movable barrel body.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a schematic structural view of a split two-lobed bucket rotary drill bit according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a structure of a fixed tub according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a movable barrel according to an embodiment of the present utility model;

fig. 5 is a schematic structural diagram of a square box according to an embodiment of the present utility model.

Reference numerals:

the connecting device 100, the square box 110, the connecting shaft hole 111, the box body 112, the reinforcing frame 113, the reinforcing plate 114, the connecting plate 120, the second connecting rib plate 130, the fixed barrel body 200, the first connecting rib plate 210, the stop block 220, the wear-resisting block 230, the movable barrel body 300, the hinge device 400, the edge sleeve 410, the middle sleeve 420, the connecting shaft 430, the hinge middle sleeve 510, the hinge edge sleeve 520 and the connecting square box 530.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus 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 utility model.

In the description of the present utility model, plural means two or more. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 2, the split type two-lobed bucket rotary drill bit according to an embodiment of the present utility model includes a connection device 100, a fixed tub 200, a hinge device 400, and a movable tub 300;

the connecting device 100, the connecting device 100 is used for connecting a rotary excavator;

the fixed barrel body 200, the fixed barrel body 200 is a half barrel body, and the fixed barrel body 200 is fixedly connected with the connecting device 100;

the hinge device 400 is arranged on the fixed barrel body 200 and is positioned at one end of the fixed barrel body 200 close to the connecting device 100;

the movable barrel body 300, the movable barrel body 300 is a half barrel body, the movable barrel body 300 is connected with the hinge device 400, and the movable barrel body 300 can be turned over and opened;

the movable barrel 300 includes an open state and a closed state, and is disposed opposite to the fixed barrel 200 when the movable barrel 300 is in the closed state, and encloses the fixed barrel 200 into a complete barrel.

The connection device 100 is used for matching connection with a drill rod of a rotary drilling machine so as to mount the rotary drilling bit on the rotary drilling machine. The movable tub 300 and the fixed tub 200 are enclosed to form a complete tub as a main body portion of the rotary drilling bit. During rotary digging operation, soil body can enter the inside of the barrel body, so the movable barrel body 300 is connected to the fixed barrel body 200 through the hinge device 400, so that the movable barrel body 300 can be opened towards the outer direction, and the accumulated soil between the movable barrel body 300 and the fixed barrel body 200 can be conveniently dumped.

In the rotary digging operation, the fixed barrel body 200 and the movable barrel body 300 are mainly subjected to the torque of soil, and the fixed barrel body 200 is directly connected with the connecting device 100 without passing through members such as a hinge. The fixed barrel body 200 is generally connected with the connecting device 100 in a welding mode, the connecting surface is larger, the structure is more stable, the fixed barrel body 200 is not easy to fall off from the connecting device 100, the barrel body is prevented from being damaged and falls into the pile hole, and the maintenance risk is reduced.

Referring to fig. 3 and 4, it can be understood that the hinge device 400 includes a middle sleeve 420, a connection shaft 430, and two side sleeves 410, the two side sleeves 410 are inserted through the fixed tub 200, and the middle sleeve 420 is disposed between the two side sleeves 410 in a matching manner, the middle sleeve 420 is connected with an end of the movable tub 300, and the connection shaft 430 is inserted through the side sleeves 410 and the middle sleeve 420.

The edge sleeve 410 is inserted into the fixed tub 200, and the contact portion between the connection weld and the soil body is small during the rotary digging process of the fixed tub 200 and the movable tub 300, so that the abrasion is reduced, and the service life of the connection structure between the edge sleeve 410 and the fixed tub 200 is prolonged.

Referring to fig. 3, further, a first connection rib 210 is provided between the fixed tub 200 and the side case 410, the first connection rib 210 is provided on an inner sidewall of the fixed tub 200, and the first connection rib 210 is connected with the sidewalls of the side case 410, respectively.

The first connection rib plate 210 can enlarge the connection surface between the fixed tub 200 and the rim cover 410, so that the rim cover 410 is more firmly connected to the fixed tub 200. Therefore, the movable tub 300 is connected to the fixed tub 200 through the connection shaft 430, and the connection reliability thereof is higher, and when a large torque is applied, it is ensured that the movable tub 300 is not detached from the fixed tub 200.

Referring to fig. 5, it can be understood that the connection device 100 includes a square box 110 and a connection plate 120, the connection plate 120 is disposed at the bottom of the square box 110, the connection plate 120 is capped on the end of the fixed tub 200 and connected with the fixed tub 200, and the side wall of the square box 110 is provided with a plurality of connection shaft holes 111 therethrough.

The square box 110 is used for being installed in a matched mode with a rotary drilling machine drill rod, so that the rotary drilling machine drill rod can be inserted into the square box 110, then the square box 110 is fixedly connected through the shaft body penetrating through the connecting shaft hole 111, and the rotary drilling machine drill rod can drive the square box 110 to rotate. The connection plate 120 is disposed at the bottom of the square box 110, and is generally connected by welding. Compared with the traditional welding of the connecting box and the hinge structure, the welding surface between the bottom surface of the square box 110 and the plate surface of the connecting plate 120 is larger, and the connection is more reliable. The fixing tub 200 is welded to the plate surface of the connection plate 120, and the welding surface is also larger, so that the connection is more reliable. Preferably, the connecting shaft hole 111 may be a waist-shaped hole, and by setting the connecting shaft hole as a waist-shaped hole, the shaft for cutting off the connection by the shearing force of the rotation torque generated in the use process is effectively reduced, so that the service life of the shaft is prolonged, the quality is ensured, and the cost is reduced.

Further, a plurality of second connection rib plates 130 are further arranged on one side of the connection plate 120 facing the fixed tub 200, the second connection rib plates 130 extend into the fixed tub 200, and the second connection rib plates 130 are connected with the inner side wall of the fixed tub 200.

The second connecting rib plate 130 plays a role of reinforcing, and increases the connecting structure between the connecting plate 120 or the square box 110 and the fixed tub 200, so that the torque that the fixed tub 200 can bear is greater. Preferably, the second connecting rib plate 130 and the side plate of the square box 110 are in an integrated structure, that is, the second connecting rib plate 130 is located at the bottom of the square box 110, after the connecting plate 120 is installed, the second connecting rib plate 130 is located at one side of the connecting plate 120 facing the fixed barrel body 200, so that the structure has higher strength and better torque resistance. It will be appreciated that, from the structural point of view, both solutions belong to the fact that the second connecting rib 130 is disposed on the side of the connecting plate 120 facing the fixed tub 200.

It is to be understood that the square box 110 includes a box 112 and a reinforcing frame 113, the box 112 is hollow, and the upper portion is opened for the insertion of a drill rod of a rotary drilling machine, the connecting shaft hole 111 is disposed at the peripheral side of the box 112, the reinforcing frame 113 is sleeved on the upper portion of the box 112, and the upper end face of the reinforcing frame 113 is flush with the upper end face of the box 112.

The reinforcement frame 113 can play a role in increasing structural strength of the case 112. By setting the upper end surfaces of the reinforcing frame 113 and the case 112 (a side surface for connection with a drill pipe of a rotary excavator) to be flat, and the upper end surfaces of the reinforcing frame 113 and the case 112 are flush, when the drill pipe of the rotary excavator is pressed down, the reinforcing frame 113 and the case 112 bear pressure together, and excessive wear and even deformation of the case 112 are avoided.

It is understood that the arrangement direction of the connection shaft holes 111 is parallel to the axial direction of the square box 110.

The connection shaft hole 111 is used for inserting a shaft to fixedly connect the square box 110 to a drill rod of the rotary drilling machine. Because the heights of the corresponding holes of the drill rod connectors of different types are different, proper connecting shaft holes 111 are required to be selected, and the arrangement direction of the connecting shaft holes 111 is parallel to the axial direction of the square box 110, so that the drill rod connectors of different heights can be adapted, and the adaptability is improved. The holes of the drill pipe connector have different heights, and after the drill pipe connector is inserted into the square box 110, the positions of the holes are mainly shown as different positions along the axial direction of the square box 110.

It can be understood that the side wall of the square box 110 is provided with a reinforcing plate 114, and the reinforcing plate 114 is attached to the connecting shaft hole 111 to increase the thickness of the connecting shaft hole 111.

Since the square box 110 and the drill rod of the rotary drilling machine are fixed through the inserting shaft, the connecting shaft hole 111 is mainly affected by torque and is easy to deform, and the reinforcing plate 114 is attached to the connecting shaft hole 111 to increase the thickness of the connecting shaft hole 111 and strengthen the deformation resistance of the square box 110.

It can be appreciated that a plurality of stoppers 220 are provided on the inner sidewall of the fixed tub 200, and the stoppers 220 are located at the split surface of the fixed tub 200 and the movable tub 300, so that the stoppers 220 can contact the inner wall of the movable tub 300.

During the rotary digging operation, the movable tub 300 is subjected to torque, which tends to be dislocated from the fixed tub 200, and is generally resisted by the hinge device 400. The stopper 220 is provided, and the stopper 220 is fixed on the inner wall of the fixed tub 200 and can contact with the inner wall of the movable tub 300, so that the stopper 220 can prevent the movable tub 300 from moving and deforming when the movable tub 300 receives torque. Preferably, at least two sets of stoppers 220 are provided, and the stoppers 220 are arranged along the axial direction of the fixed tub 200, and when one set of stoppers 220 fails, the remaining stoppers 220 can still play a limiting role.

It can be appreciated that the fixed tub 200 and the movable tub 300 are provided at their ends remote from the connection device 100, and a plurality of wear blocks 230 are provided on the outer sidewalls thereof, and the plurality of wear blocks 230 are arranged and distributed along the circumferential direction thereof.

The abrasion-resistant block 230 can be attached to the outer side surfaces of the fixed tub 200 and the movable tub 300, and contacts with soil, and is used for protecting the fixed tub 200 and the movable tub 300 during rotary digging operation, reducing surface abrasion and prolonging service life.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims

1. The utility model provides a split type two lamella fill digs drill bit soon which characterized in that includes:

the connecting device (100) is used for connecting the rotary excavator (100);

the fixed barrel body (200), the fixed barrel body (200) is a half barrel body, the fixed barrel body (200) is fixedly connected with the connecting device (100), and a plurality of stop blocks (220) are arranged on the inner side wall of the fixed barrel body (200);

the hinge device (400) is arranged on the fixed barrel body (200) and is positioned at one end, close to the connecting device (100), of the fixed barrel body (200);

the movable barrel body (300), the movable barrel body (300) is a half barrel body, the movable barrel body (300) is connected with the hinge device (400), and the movable barrel body (300) can be turned over and opened;

the movable barrel body (300) comprises an opening state and a closing state, the movable barrel body (300) is arranged opposite to the fixed barrel body (200) when in the closing state, the movable barrel body and the fixed barrel body (200) are enclosed to form a complete barrel body, and the plurality of stop blocks (220) are located at the split surfaces of the fixed barrel body (200) and the movable barrel body (300), so that the stop blocks (220) can be in contact with the inner wall of the movable barrel body (300).

2. The split two-piece bucket rotary drill bit of claim 1, wherein: the hinge device (400) comprises a middle sleeve (420), a connecting shaft (430) and two side sleeves (410), wherein the two side sleeves (410) are embedded in the fixed barrel body (200) in a penetrating mode, the middle sleeve (420) is arranged in the middle of the two side sleeves (410) in a matching mode, the middle sleeve (420) is connected with the end portion of the movable barrel body (300), and the connecting shaft (430) is arranged in the side sleeves (410) in a penetrating mode.

3. The split two-piece bucket rotary drill bit of claim 2, wherein: the fixed barrel body (200) with be equipped with first connection gusset (210) between limit cover (410), first connection gusset (210) set up on the inside wall of fixed barrel body (200), first connection gusset (210) are connected with two respectively the lateral wall of limit cover (410).

4. The split two-piece bucket rotary drill bit of claim 1, wherein: the connecting device (100) comprises a square box (110) and a connecting plate (120), wherein the connecting plate (120) is arranged at the bottom of the square box (110), the connecting plate (120) is covered on the end part of the fixed barrel body (200) and is connected with the fixed barrel body (200), and a plurality of through connecting shaft holes (111) are formed in the side wall of the square box (110).

5. The split two-piece bucket rotary drill bit of claim 4, wherein: the connecting plate (120) is towards one side of the fixed barrel body (200) is further provided with a plurality of second connecting rib plates (130), the second connecting rib plates (130) extend into the fixed barrel body (200), and the second connecting rib plates (130) are connected with the inner side wall of the fixed barrel body (200).

6. The split two-piece bucket rotary drill bit of claim 4, wherein: square chest (110) are including box (112) and reinforcement frame (113), the inside cavity of box (112), and top opening is in order to supply to dig the machine drilling rod soon to match and insert, connecting shaft hole (111) set up the week side of box (112), reinforcement frame (113) cover is established the upper portion of box (112), just the up end of reinforcement frame (113) with the up end of box (112) flushes.

7. The split two-piece bucket rotary drill bit of claim 4, wherein: the arrangement direction of the connecting shaft holes (111) is parallel to the axial direction of the square box (110).

8. The split two-piece bucket rotary drill bit of claim 4, wherein: the side wall of the square box (110) is provided with a reinforcing plate (114), and the reinforcing plate (114) is attached to the connecting shaft hole (111).

9. The split two-piece bucket rotary drill bit of claim 1, wherein: the fixed barrel body (200) and the movable barrel body (300) are far away from one end of the connecting device (100), a plurality of wear-resisting blocks (230) are arranged on the outer side wall of the fixed barrel body, and the plurality of wear-resisting blocks (230) are distributed in a circumferential direction.