CN218971119U - Graded reaming full-hydraulic bottom-enlarging drill bit - Google Patents

Abstract

The utility model relates to a grading reaming full-hydraulic bottom-reaming drill bit, and belongs to the technical field of pile machine reaming. The drill bit comprises a shell, a support assembly, an upper reaming assembly, a lower reaming assembly, an upper telescopic hydraulic cylinder and a lower telescopic hydraulic cylinder, wherein the shell is provided with a cavity, the support assembly is installed in the cavity, the top end of the support assembly penetrates through the shell and is located at the top end of the shell, one end of the upper reaming assembly is rotationally installed at the top of the support assembly, an opening which is communicated with the cavity is formed in one side of the shell, one end of the lower reaming assembly is slidingly installed in the cavity, a through hole which is communicated with the cavity is formed in one side of the shell, the lower reaming assembly is located below the upper reaming assembly, the fixed end of the upper telescopic hydraulic cylinder is rotationally installed on the support assembly, the movable end of the upper telescopic hydraulic cylinder is rotationally installed on the upper reaming assembly, and the fixed end of the lower telescopic hydraulic cylinder is installed at one end of the lower reaming assembly which is located in the cavity.

Description

Graded reaming full-hydraulic bottom-enlarging drill bit

Technical Field

The utility model belongs to the technical field of pile machine reaming, and particularly relates to a grading reaming full-hydraulic bottom reaming bit.

Background

In modern construction, an anchoring technology is often used, and in the anchoring technology using concrete, concrete pouring is required to be performed after the bottom of a pore canal is enlarged, so that mechanical interlocking of a concrete rod and the pore canal is realized, and anchoring of the concrete rod and the pore canal is realized. Therefore, the bottom of the hole needs to be reamed by using a bottom-enlarging drill before the mechanical anchoring construction.

The utility model of the patent number CN202220926167.0 provides a two-section rotary digging bottom-expanding drill bit for the reverse construction of a foundation pit, which comprises a cross framework, an upper bottom-expanding part and a lower bottom-expanding part, wherein the upper bottom-expanding part is connected to the side edge of the cross framework, and the lower bottom-expanding part is connected to the lower end of the cross framework. The utility model has the advantages that compared with the prior art: firstly, the rotary-digging bottom-enlarging drill bit is provided with the upper bottom-enlarging and the lower bottom-enlarging to form a two-section rotary-digging bottom-enlarging structure, so that the bottom-enlarging efficiency can be effectively improved; and secondly, when the bottom expanding bottom of the rotary-digging bottom expanding drill bit is used for expanding the bottom, the upper bottom expanding part can maintain the pile face of the expanded bottom, stabilize the expanded bottom surface and enable the pile bottom with the complete expanded bottom to be more stable. However, most of the components in the grading drill bit in the prior art are directly contacted with soil and stones, when the grading drill bit works, a lot of soil and broken stones fall, and the soil Dan Rongyi is clamped at the joint of the upper and lower reaming components and the bracket component to influence the movement of the upper and lower reaming components, so that the bottom reaming effect is poor, and even the bottom reaming work can not be carried out when the grading drill bit is serious.

Disclosure of Invention

The utility model provides a grading reaming full-hydraulic bottom-reaming drill bit which is used for solving the technical problem that soil Dan Rongyi is clamped at the joint of an upper reaming assembly, a lower reaming assembly and a bracket assembly.

In order to achieve the above purpose, the present utility model is realized by the following technical scheme: the utility model provides a full hydraulic pressure of reaming under-reaming drill bit in grades includes casing, support subassembly, go up the reaming subassembly, lower reaming subassembly, go up flexible pneumatic cylinder and lower flexible pneumatic cylinder, the casing has the cavity, support subassembly installs in the cavity, the top of support subassembly is passed the casing and is located the casing top, lifting unit and rotating assembly are installed at the top of support subassembly, go up the one end rotation of reaming subassembly and install the top at support subassembly, one side of casing has been offered and is linked together and with the opening of last reaming subassembly adaptation, lower reaming subassembly's one end slidable mounting is in the cavity, one side of casing has been offered and is linked together and with the through-hole of lower reaming subassembly adaptation, lower reaming subassembly is located last reaming subassembly below, go up flexible pneumatic cylinder's stiff end and rotates and install on the support subassembly, go up flexible pneumatic cylinder's expansion cylinder's stiff end and rotate and install on last reaming subassembly through the opening in order to pass the lateral wall of casing to keep away from the casing orientation, the stiff end of lower flexible pneumatic cylinder is installed on the support subassembly, the expansion cylinder's expansion end is located the cavity down the promotion one end of cavity and is used for keeping away from the casing through the flexible through-hole of casing under-reaming subassembly.

Through the structure, the grading reaming full-hydraulic bottom-reaming drill bit provided by the utility model can prevent the connection part of the upper reaming assembly and the lower reaming assembly with the bracket assembly from being in direct contact with earth and stones, thereby preventing the connection part of the upper reaming assembly and the lower reaming assembly with the bracket assembly from being in direct contact with earth Dan Ka. Specifically, firstly, lifting assembly will be this drill bit to the bottom of pore, then, go up the expansion cylinder's expansion end and stretch out, in order to drive the one end that support subassembly was kept away from to the support subassembly and pass the casing through the opening and rotate to the direction of keeping away from the casing, simultaneously, the rotation subassembly drives support subassembly and rotates, thereby drive the assembly of reaming and rotate, and then accomplish the partial reaming to the pore, afterwards, the expansion cylinder's expansion end stretches out, in order to drive the one end that support subassembly was kept away from to the support subassembly and pass the casing through the through-hole and slide to the direction of keeping away from the casing, simultaneously, the rotation subassembly drives the support subassembly and rotates, thereby drive down the reaming subassembly and rotate, and then, the reaming subassembly is passed through the casing through the opening to the direction of being close to the support subassembly through the opening, because opening and the adaptation of last reaming subassembly, the earth stone on the circumference of last reaming subassembly can with the casing butt, and with the rotation of last reaming subassembly is followed up the reaming subassembly and is completely withdrawn, make soil Dan Nianfu on the shell or fall into the pore, simultaneously, the expansion cylinder is driven down the casing is followed by the expansion cylinder to drive down the expansion cylinder, the casing is followed by the shrinkage of the casing and is followed by the casing and is moved down the reaming subassembly and is moved down in the direction of the hole, the hole is followed by the well bore 35.

Optionally, the up-reaming assembly comprises:

one end of the push rod is rotatably arranged at the top of the bracket assembly, and the other end of the push rod passes through the side wall of the shell through the opening;

the axial direction of the push rod sleeve is perpendicular to the axial direction of the push rod, one end of the push rod sleeve is sleeved outside the push rod, the other end of the push rod sleeve penetrates through the shell and is positioned in the cavity, and the peripheral side of the push rod sleeve is abutted against the periphery of the opening;

the upper scraping teeth are axially distributed on one side of the push rod far away from the push rod sleeve.

Optionally, the under-reaming assembly comprises:

one end of the push plate is slidably arranged in the cavity, the other end of the push plate passes through the side wall of the shell through the through hole, is positioned at one side of the shell and below the push rod, and the peripheral side of the push plate is abutted with the peripheral side of the through hole;

the lower scraping teeth are distributed on one side of the push plate away from the shell along the width direction.

Optionally, the bracket assembly includes:

the two reinforcing columns are arranged at the top end and the bottom end of the shell in parallel, and one end of the push rod is arranged at one end of the reinforcing column far away from the bottom end of the shell;

one end of the connector is arranged on the reinforcing column far away from the bottom end of the shell, the other end of the connector penetrates through the shell and is positioned at the top end of the shell, and the connector is used for being connected with the rotating assembly and the lifting assembly;

the connecting shaft, both ends are installed respectively the middle part of two spliced poles, the axis of connecting shaft with the axis of spliced pole is perpendicular, the casing cover is established two spliced poles and the connecting shaft is outside.

Optionally, the method further comprises:

and the dredging knife is arranged at the bottom end of the shell.

Optionally, the method further comprises:

and the displacement sensor is arranged on the connecting shaft and positioned in the cavity and is used for detecting the stroke of the reaming bit.

Optionally, the method further comprises:

the two stabilizing blocks are respectively arranged on two opposite sides of the top end of the shell and respectively abutted with the hole wall of the hole channel.

Optionally, the shell is cuboid.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic structural view of a graded reaming full-hydraulic bottom-reaming bit according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a stepped reaming full hydraulic bottom-reaming bit in accordance with an embodiment of the present utility model;

FIG. 3 is a further cross-sectional view of a stepped reaming full hydraulic reamer bit in accordance with an embodiment of the present utility model;

FIG. 4 is a side view of a stepped reaming full hydraulic pilot bit in accordance with an embodiment of the present utility model;

FIG. 5 is a top view of a stepped reaming full hydraulic bottom reamer bit according to an embodiment of the present utility model

FIG. 6 is a schematic diagram of the working principle of a graded reaming full-hydraulic bottom-reaming bit according to an embodiment of the present utility model;

FIG. 7 is a schematic diagram of another working principle of a stepped reaming full-hydraulic bottom-reaming bit according to an embodiment of the present utility model;

fig. 8 is a schematic diagram of another working principle of a graded reaming full-hydraulic bottom-reaming bit according to an embodiment of the present utility model.

In the figure:

1-a housing; a 2-bracket assembly; 21-a reinforcement column; 22-linker; 23-connecting shaft; 3-an up-reaming assembly; 31-push rod; 32-push rod sleeve; 33-upper scraping teeth; 4-a bottom reaming assembly; 41-push plate; 42-lower scraping teeth; 5-an upper telescopic hydraulic cylinder; 6-a lower telescopic hydraulic cylinder; 7-dredging knife; 8-stabilizing blocks; 9-pore canal.

Detailed Description

Embodiments of the present application are described in detail below with reference to the accompanying drawings.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Examples:

in the prior art, most of the components in the grading drill bit are directly contacted with soil and stones, when the grading drill bit works, a lot of soil and broken stones fall, the soil Dan Rongyi is clamped at the joint of the upper reaming component 3, the lower reaming component 4 and the bracket component 2, the activities of the upper reaming component 3 and the lower reaming component 4 are influenced, the bottom reaming effect is poor, and even the bottom reaming work can not be carried out when the grading drill bit is serious.

In order to solve the above technical problems, the present embodiment as shown in fig. 1 and 2 provides a stepped reaming full hydraulic bottom-enlarging drill bit, which comprises a casing 1, a bracket assembly 2, an upper reaming assembly 3, a lower reaming assembly 4, an upper telescopic hydraulic cylinder 5 and a lower telescopic hydraulic cylinder 6.

In order to make the drill bit more balanced when rotating, a stepped reaming full hydraulic bottom reaming drill bit as shown in fig. 1 and 2 comprises two upper reaming assemblies 3, two lower reaming assemblies 4, two upper telescopic hydraulic cylinders 5 and two lower telescopic hydraulic cylinders 6. The upper telescopic hydraulic cylinder 5 is a scraper hydraulic cylinder with the model of GB90/45X420-L manufactured by Changzhou commercial hydraulic machinery Co., ltd. And the lower telescopic hydraulic cylinder 6 is a push plate hydraulic cylinder with the model of GB90/45X420-L manufactured by Changzhou commercial hydraulic machinery Co., ltd. Which are all of the prior art and are not described herein.

The casing 1 has the cavity, the support subassembly 2 is installed in the cavity, the top of support subassembly 2 passes casing 1 and is located the casing 1 top, and install lifting unit (not shown in the figure) and rotating unit (not shown in the figure), the one end of two upper broaching subassembly 3 is rotated respectively and is installed on the opposite sides at the top of support subassembly 2, the opening with the cavity intercommunication and with upper broaching subassembly 3 adaptation is seted up respectively to the opposite sides of casing 1, the equal slidable mounting of one end of two lower broaching subassembly 4 is in the cavity, the through-hole with the cavity intercommunication and with lower broaching subassembly 3 adaptation is seted up respectively to the opposite sides of casing 1, two lower broaching subassembly 4 are located two upper broaching subassembly 3 below respectively, the stiff end of two upper broaching pneumatic cylinder 5 is all rotated and is installed on support subassembly 2, two upper broaching subassembly 5 are rotated respectively, two upper broaching pneumatic cylinder 5 are located the cavity, two upper and lower broaching pneumatic cylinder 5 are used for promoting two upper broaching subassembly 3 respectively through two openings respectively with the rotation of two casing 1 direction of passing casing 1 down, two lower broaching subassembly 6 are kept away from in two lateral wall 1 direction respectively, two lower broaching subassembly 6 are kept away from respectively in two lateral wall 1 are installed to two lower broaching subassembly 6 respectively.

Through the structure, the grading reaming full-hydraulic bottom-reaming drill bit provided by the embodiment can prevent the connection part of the upper reaming assembly 4 and the lower reaming assembly 4 as well as the support assembly 2 from being in direct contact with earth and stones, thereby preventing the connection part of the upper reaming assembly 4 and the lower reaming assembly 4 as well as the support assembly 2 from being earthed Dan Ka. Specifically, firstly, the lifting assembly (not shown in the figure) lowers the drill bit to the bottom of the hole 9, then, the movable ends of the two upper telescopic hydraulic cylinders 5 extend to respectively drive one ends of the two upper reaming assemblies 3, which are far away from the bracket assembly 2, to respectively pass through the housing 1 and rotate in a direction far away from the housing 1 through the two openings, meanwhile, the rotating assembly (not shown in the figure) drives the bracket assembly 2 to rotate, so as to drive the two upper reaming assemblies 3 to rotate, and further, the hole 9 is partially reamed, then, the movable ends of the two lower telescopic hydraulic cylinders 6 extend to respectively drive one ends of the two lower reaming assemblies 4, which are far away from the bracket assembly 2, to respectively pass through the housing 1 and slide in a direction far away from the housing 1 through the two through holes, meanwhile, the rotating assembly (not shown in the figure) drives the bracket assembly 2 to rotate, so as to drive the lower reaming assemblies 4 to rotate, and then the hole-enlarging of the hole-enlarging 9 is completed, then, the movable ends of the two upper expansion hydraulic cylinders 5 are contracted to respectively drive the ends of the two upper expansion hydraulic cylinders 3, which are far away from the bracket component 2, to respectively pass through the shell 1 to rotate towards the direction, which is close to the bracket component 2, through the two openings, and as the openings are matched with the upper expansion hydraulic cylinders 3, earth and stones adsorbed on the peripheral side of the upper expansion hydraulic cylinders 3 can be abutted with the shell 1 and slide towards the direction, which is far away from the shell 1, relative to the upper expansion hydraulic cylinders 3 along with the rotation of the upper expansion hydraulic cylinders 3, the two upper expansion hydraulic cylinders 3 are completely retracted to enable the earth Dan Nianfu to be on the shell or fall into the hole-enlarging 9, meanwhile, the movable ends of the two lower expansion hydraulic cylinders 6 are contracted to respectively drive the ends of the two lower expansion hydraulic cylinders, which are far away from the bracket component 2, to respectively pass through the shell 1 to slide towards the direction, which is close to the shell 1, through the two through holes, since the through holes are matched with the under-reaming assemblies 4, earth and stones adsorbed on the circumferential sides of the under-reaming assemblies 4 are abutted against the casing 1, and slide relative to the under-reaming assemblies 4 along with the sliding of the under-reaming assemblies 4 in a direction away from the casing 1, the two under-reaming assemblies 4 are fully retracted, so that the earth Dan Nianfu is on the casing or falls into the hole 9, and finally, the lifting assembly (not shown in the figure) drives the drill bit to lift.

In order to prevent earth and stones from entering the cavity through the gap between the upper reamer assembly 3 and the housing 1 during the hole turning, an alternative embodiment of this embodiment is as follows: as shown in fig. 2, the upper reaming assembly 3 includes a push rod 31, a push rod sleeve 32 and sixteen upper scraping teeth 33, one end of the push rod 31 is rotatably installed at the top of the bracket assembly 2, the other end of the push rod 31 passes through the side wall of the shell 1 through an opening, the axial direction of the push rod sleeve 32 is perpendicular to the axial direction of the push rod 31, one end of the push rod sleeve 32 is sleeved outside the push rod 31, the other end of the push rod sleeve 32 passes through the shell 1 and is located in the cavity, the circumferential side of the push rod sleeve 32 abuts against the circumference of the opening, and the sixteen upper scraping teeth 33 are axially distributed on one side, far away from the push rod sleeve 32, of the push rod 31 as shown in fig. 4. Specifically, first, the movable end of the upper telescopic hydraulic cylinder 5 extends out to drive one end of the push rod 31 away from the bracket assembly 2 to pass through the shell 1 and rotate in a direction away from the shell 1 through the opening, so as to drive the push rod sleeve 32 to pass through the shell 1 and rotate in a direction away from the shell 1 through the opening, one end of the push rod sleeve 32 is sleeved outside the push rod 31, the other end of the push rod sleeve 32 passes through the shell 1 and is positioned in the cavity, the peripheral side of the push rod sleeve 32 is abutted with the periphery of the opening, so that earth and stones cannot enter the cavity through a gap between the push rod 31 and the shell 1, when the push rod 31 is retracted, the movable end of the upper telescopic hydraulic cylinder 5 contracts to drive one end of the push rod 31 away from the shell 1 to rotate in a direction close to the shell 1, so as to drive the push rod sleeve 32 to rotate in a direction close to the shell 1, and because the opening is abutted with the push rod sleeve 32, the earth and stones adsorbed on the peripheral side of the push rod sleeve 32 are abutted with the shell 1, the push rod 31 is retracted to drive the push rod sleeve 32 to slide in a direction away from the shell 1, and then the push rod 31 is completely retracted, and the earth and stones are completely accommodated in the cavity Dan Nianfu or falls into the cavity 579.

In order to prevent earth and stones from entering the cavity through the gap between the under-reaming assembly 4 and the housing 1 during the hole turning, an alternative implementation of this embodiment is as follows: the under-reaming assembly 4 shown in fig. 3 includes a push plate 41 and seven lower scraping teeth 42, one end of the push plate 41 is slidably mounted in the cavity, the other end of the push plate 41 passes through the side wall of the housing 1 through the through hole and is located at one side of the housing 1 and below the push rod 31, the circumferential side of the push plate 41 abuts against the circumferential side of the through hole, and the seven lower scraping teeth 42 are distributed at one side of the push plate 41 away from the housing 1 in the width direction as shown in fig. 4. Specifically, first, the movable end of the lower telescopic hydraulic cylinder 6 extends out to drive one end of the push plate 41 away from the bracket assembly 2 to pass through the housing 1 to slide in a direction away from the housing 1 through the through hole, and the peripheral side of the push plate 41 is abutted against the inner wall of the through hole, so that earth and stones cannot enter the cavity through the gap contact between the push plate 41 and the housing 1. When the push plate 41 is retracted, the movable end of the lower telescopic hydraulic cylinder 6 contracts to drive the push plate 41 to slide in a direction approaching the housing 1, and because the peripheral side of the push plate 41 is abutted with the peripheral side of the through hole, earth and stones adsorbed on the peripheral side of the push plate 41 are abutted with the housing 1, so that the earth and stones slide in a direction away from the housing 1 relative to the push plate 41, the push plate 41 is fully retracted, and the earth Dan Nianfu is arranged on the housing or falls into the duct 9.

An alternative implementation of this embodiment is as follows: the bracket assembly 2 shown in fig. 3 comprises two reinforced columns 21, a joint 22 and a connecting shaft 23, wherein the two reinforced columns are arranged at the top end and the bottom end of the shell 1 in parallel, one end of a push rod 31 is arranged at one end of the reinforced column 21 far away from the bottom end of the shell 1, one end of the joint 22 is arranged on the reinforced column 21 far away from the bottom end of the shell 1 as shown in fig. 5, the other end of the joint 22 penetrates through the shell 1 and is positioned at the top end of the shell 1, the joint 22 is used for being connected with a rotating assembly (not shown in the figure) and a lifting assembly (not shown in the figure), two ends of the connecting shaft 23 are respectively arranged at the middle parts of the two reinforced columns 21, the axis of the connecting shaft 23 is perpendicular to the axis of the reinforced column 21, and the shell 1 is sleeved outside the two reinforced columns 21 and the connecting shaft 23.

In order to leave the bottom ends of the channels 9 uncovered by sludge, an alternative implementation of this embodiment is as follows: as shown in fig. 1 and 2, the dredging device further comprises a dredging cutter 7, and the dredging cutter 7 is arranged at the bottom end of the shell 1. Specifically, the rotation assembly (not shown) rotates to drive the joint 22 to rotate to drive the reinforcing column 21 to rotate to drive the casing 1 to rotate to drive the dredging knife 7 to rotate, thereby cutting the bottom of the duct 9 to scrape the sludge on the bottom surface.

In order to make the reamer bit more stable to rotation during reaming, an alternative implementation of this embodiment is as follows: as shown in fig. 1 and 2, the device further comprises two stabilizing blocks 8, wherein the two stabilizing blocks 8 are respectively arranged on two opposite sides of the top end of the shell 1 and respectively abut against the wall of the pore canal 9. Specifically, when the reamer bit rotates, the stabilizer 8 abuts against the wall of the hole 9, so that the reamer bit is coaxial with the hole 9.

In order to enable an operator to better understand the position of the reamer bit during operation, a stepped reaming full hydraulic reamer bit further includes a displacement sensor (not shown) mounted on the connecting shaft 23 and positioned within the cavity. More preferably, the device further comprises a monitor (not shown in the figure), wherein the monitor (not shown in the figure) is handheld and is in signal connection with a displacement sensor (not shown in the figure), the displacement sensor (not shown in the figure) is a non-contact type displacement sensor (not shown in the figure) with the model number of SSL-1A4210-0500M1C03-WO, and the monitor is a JS series monitor produced by Tianjin Jingxin technology development Co., ltd. Specifically, the stroke of the oil cylinder is detected according to a displacement sensor (not shown in the figure) carried on the oil cylinder in the descending process, a feedback signal is sent to a monitor (not shown in the figure), and a liquid crystal screen of the monitor (not shown in the figure) is displayed in a pile shape, so that an operator can conveniently know the position condition of the reaming bit.

An alternative implementation of this embodiment is as follows: the housing 1 has a rectangular parallelepiped shape.

In summary, in the reaming process, firstly, as shown in fig. 6, the lifting assembly (not shown in the drawing) lowers the drill bit to the bottom of the hole 9, then, as shown in fig. 7, the movable ends of the two upper telescopic hydraulic cylinders 5 extend to respectively drive one ends of the two push rods 31 far away from the reinforcing column 21 to respectively rotate through the two openings through the shell 1 towards the direction far away from the shell 1, respectively drive the two push rod sleeves 32 to respectively rotate through the two openings through the shell 1 towards the direction far away from the shell 1, one ends of the push rod sleeves 32 are sleeved on the outer sides of the push rods 31, the other ends of the push rod sleeves 32 pass through the shell 1 and are positioned in the cavity, the peripheral sides of the push rod sleeves 32 are abutted against the periphery of the openings, so that earth and stones cannot enter the cavity through the gap between the push rods 31 and the shell 1, meanwhile, the rotating assembly (not shown in the drawing) drives the joint 22 to rotate, thereby driving the reinforcing column 21 to rotate and driving the two push rods 31 to rotate and driving the upper scraping teeth 33 to rotate and further completing the partial reaming of the duct 9, then, as shown in fig. 8, the movable ends of the two lower telescopic hydraulic cylinders 6 extend to respectively drive one ends of the two push plates 41 far away from the connecting shaft 23 to slide through the through holes passing through the shell 1 and far away from the shell 1, the peripheral sides of the push plates 41 are abutted with the inner walls of the through holes, so that earth and stones can not enter the cavity through the clearance contact between the push plates 41 and the shell 1, simultaneously, the rotating assembly (not shown) drives the joint 22 to rotate and drives the reinforcing column 21 to rotate and driving the connecting shaft 23 to rotate and driving the push plates 41 to rotate and further driving the lower scraping teeth 42 to complete the reaming of the duct 9, and during the reaming, the stabilizing block 8 is abutted with the wall of the duct 9, so that the reaming bit and the hole 9 are coaxial, the rotating assembly (not shown in the figure) rotates to drive the joint 22 to rotate, so as to drive the reinforcing column 21 to rotate, so as to drive the shell 1 to rotate, and drive the dredging knife 7 to rotate, thereby cutting the bottom of the hole 9, so as to scrape the sludge on the bottom surface, then, the movable ends of the two upper telescopic hydraulic cylinders 5 shrink, so as to respectively drive one ends of the two push rods 31 away from the shell 1 to rotate towards the direction close to the shell 1, thereby driving the two push rod sleeves 32 to rotate towards the direction close to the shell 1, because the opening is abutted with the push rod sleeves 32, the earth and stones adsorbed on the circumferential side of the push rod sleeves 32 can be abutted with the shell 1, the push rod 31 is retracted to drive the push rod sleeves 32 to retract, so that the earth and stones slide towards the direction away from the shell 1 relative to the push rod sleeves 32, the push rod sleeves 32 are completely retracted, so that the earth and stones are completely positioned in the accommodating cavity, so that the earth Dan Nianfu slide on the shell or fall into the hole 9, and simultaneously, the movable ends of the two lower telescopic hydraulic cylinders 6 shrink to respectively, so that the two push rods 41 slide towards the direction close to the shell 1, so that the circumferential sides of the push rod sleeves are adsorbed on the push rod sleeves 32 are completely abutted against the shell 1, and the earth and the soil and the push rod sleeves are completely retracted in the direction (37) so that the direction of the push rod sleeves are completely separated from the hole 1).

The above description is merely an embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present utility model, and it is intended to cover the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (8)

1. A staged reaming full hydraulic bottom reaming bit comprising:

a housing having a cavity;

the support assembly is arranged in the cavity, and the top end of the support assembly penetrates through the shell and is positioned at the top end of the shell;

one end of the upper reaming assembly is rotatably arranged at the top of the bracket assembly, and one side of the shell is provided with an opening which is communicated with the cavity and is matched with the upper reaming assembly;

one end of the lower reaming assembly is slidably arranged in the cavity, one side of the shell is provided with a through hole which is communicated with the cavity and is matched with the lower reaming assembly, and the lower reaming assembly is positioned below the upper reaming assembly;

the fixed end of the upper telescopic hydraulic cylinder is rotatably mounted on the bracket assembly, the movable end of the upper telescopic hydraulic cylinder is rotatably mounted on the upper reaming assembly, the upper telescopic hydraulic cylinder is positioned in the cavity, and the upper telescopic hydraulic cylinder is used for pushing the upper reaming assembly to pass through the opening so as to pass through the side wall of the shell and rotate in the direction away from the shell;

the lower telescopic hydraulic cylinder, the stiff end is installed on the support subassembly, the expansion end of lower telescopic hydraulic cylinder is installed the one end that the lower reaming subassembly is located in the cavity, lower telescopic hydraulic cylinder is used for promoting the lower reaming subassembly passes through the through-hole is in order to pass the lateral wall of casing is to keeping away from the casing direction slides.

2. The stepped reaming full hydraulic reamer head of claim 1, wherein said upper reamer assembly comprises:

one end of the push rod is rotatably arranged at the top of the bracket assembly, and the other end of the push rod passes through the side wall of the shell through the opening;

the axial direction of the push rod sleeve is perpendicular to the axial direction of the push rod, one end of the push rod sleeve is sleeved outside the push rod, the other end of the push rod sleeve penetrates through the shell and is positioned in the cavity, and the peripheral side of the push rod sleeve is abutted against the periphery of the opening;

the upper scraping teeth are axially distributed on one side of the push rod far away from the push rod sleeve.

3. The stepped reaming full hydraulic reamer head of claim 2, wherein said under reamer assembly comprises:

one end of the push plate is slidably arranged in the cavity, the other end of the push plate passes through the side wall of the shell through the through hole, is positioned at one side of the shell and below the push rod, and the peripheral side of the push plate is abutted with the peripheral side of the through hole;

the lower scraping teeth are distributed on one side of the push plate away from the shell along the width direction.

4. A stepped reaming full hydraulic reamer bit according to claim 3, wherein said carrier assembly comprises:

the two reinforcing columns are arranged at the top end and the bottom end of the shell in parallel, and one end of the push rod is arranged at one end of the reinforcing column far away from the bottom end of the shell;

one end of the connector is arranged on the reinforcing column far away from the bottom end of the shell, the other end of the connector penetrates through the shell and is positioned at the top end of the shell, and the connector is used for being connected with the rotating assembly and the lifting assembly;

the connecting shaft, both ends are installed respectively the middle part of two spliced poles, the axis of connecting shaft with the axis of spliced pole is perpendicular, the casing cover is established two spliced poles and the connecting shaft is outside.

5. The staged reaming full hydraulic bottom reamer of claim 4, further comprising:

and the dredging knife is arranged at the bottom end of the shell.

6. The staged reaming full hydraulic bottom reamer of claim 5, further comprising:

the two stabilizing blocks are respectively arranged on two opposite sides of the top end of the shell and respectively abutted with the hole wall of the hole channel.

7. The staged reaming full hydraulic bottom reamer of claim 6, further comprising:

and the displacement sensor is arranged on the connecting shaft and positioned in the cavity and is used for detecting the stroke of the reaming bit.

8. A stepped reaming full hydraulic reamer bit according to any one of claims 1 to 6, wherein said housing is rectangular.

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