CN112878903A

CN112878903A - Drilling device for rectangular pile foundation

Info

Publication number: CN112878903A
Application number: CN202110079191.5A
Authority: CN
Inventors: 王国举; 杨文函
Original assignee: Sichuan Railway Construction Co ltd
Current assignee: Sichuan Railway Construction Co ltd
Priority date: 2021-01-21
Filing date: 2021-01-21
Publication date: 2021-06-01
Anticipated expiration: 2041-01-21
Also published as: CN112878903B

Abstract

The application provides a drilling equipment for rectangle pile foundation includes: drill plate assembly and row material assembly. The drill plate assembly comprises a rectangular plate, disk-shaped drill bits are arranged on the rectangular plate in a sliding mode from the center to four corners, the disk-shaped drill bits are provided with independent motors, rotating shafts of the disk-shaped drill bits are perpendicular to the rectangular plate, and plowshares are arranged on the rectangular plate in a sliding mode from the center to four sides; the material discharging assembly comprises a connecting pipe, wherein a material discharging pipe is arranged at the upper section of the connecting pipe, the connecting pipe penetrates through the center of the rectangular plate and is connected with the rectangular plate, a spiral feeding rod coaxially penetrates through the connecting pipe, the bottom of the spiral feeding rod protrudes out of the connecting pipe, and a conical drill bit is connected to the bottom of the spiral feeding rod. Can accomplish simultaneously and drill and arrange the material, disk type drill bit and ploughshare position are adjustable, can be used to the pile foundation drilling construction of equidimension not, are convenient for use in the construction of installation prefabricated pipe simultaneously.

Description

Drilling device for rectangular pile foundation

Technical Field

The invention belongs to the field of engineering machinery, and particularly relates to a drilling device for a rectangular pile foundation.

Background

At present, the drilling devices for the rectangular pile foundation are more in types, but the following problems generally exist.

1. One set of drilling device can only drill rectangular holes with the same size and specification, and different drilling devices need to be replaced when rectangular holes with different sizes and specifications are drilled, so that the drilling devices are more in specification and variety, and the operation cost is increased;

2. the existing drilling device has a single function, can only be used for hole turning and cannot perform material discharging, the drilling device needs to be lifted after each drilling distance, soil generated during drilling is discharged, then the next section of drilling is performed, and the drilling efficiency is low;

3. when the pile foundation is drilled into a region with soft soil, the upper section of the pile foundation is easy to collapse, and in order to solve the problem, the prefabricated pipe is usually installed from top to bottom to prevent the pile foundation from collapsing. However, as shown in fig. 12, the area of the inner space of the prefabricated pipe after installation becomes smaller than the volume of the drilling apparatus, and thus the drilling apparatus cannot be taken out. In order to solve the problem, a drilling device with a size smaller than the specified size is selected during most construction, the drilling device can smoothly penetrate through the prefabricated pipe, and then steps suitable for the size of the prefabricated pipe are gradually dug on the upper section of the pile foundation to install the prefabricated pipe. The construction mode needs to enlarge the hole once again, increases the workload, cannot be completed at one time, and has lower construction efficiency.

Disclosure of Invention

In order to solve the defects of the prior art, the invention provides the drilling device for the rectangular pile foundation, which can simultaneously complete drilling and discharging, can adjust the positions of the disc-shaped drill bit and the plowshare, can be used for drilling construction of pile foundations with different sizes, and is convenient to use in construction of installing prefabricated pipes.

In order to realize the purpose of the invention, the following scheme is adopted:

a drilling apparatus for a rectangular pile foundation, comprising: drill plate assembly and row material assembly.

The drill plate assembly comprises a rectangular plate, disk-shaped drill bits are arranged on the rectangular plate in a sliding mode from the center to four corners, the disk-shaped drill bits are provided with independent motors, rotating shafts of the disk-shaped drill bits are perpendicular to the rectangular plate, and plowshares are arranged on the rectangular plate in a sliding mode from the center to four sides;

the material discharging assembly comprises a connecting pipe, wherein a material discharging pipe is arranged at the upper section of the connecting pipe, the connecting pipe penetrates through the center of the rectangular plate and is connected with the rectangular plate, a spiral feeding rod coaxially penetrates through the connecting pipe, the bottom of the spiral feeding rod protrudes out of the connecting pipe, and a conical drill bit is connected to the bottom of the spiral feeding rod.

Further, the rectangular plate surface is followed the slip direction processing of dish type drill bit has the spout, spout bottom processing have with spout length is the same and the bar hole that is parallel to each other, the spout slides and is equipped with the connecting block of "worker" font, the spout both sides are equipped with the clamp plate, the motor install in the connecting block top, the dish type drill bit is located the rectangular plate below, the motor with the connecting axle clearance of dish type drill bit passes the middle part of connecting block and bar hole.

Furthermore, the connecting blocks are connected to push rods of first hydraulic cylinders, the axes of the first hydraulic cylinders are intersected with the central shaft of the rectangular plate, the tail portions of the first hydraulic cylinders face the center of the rectangular plate, gaps are reserved between the first hydraulic cylinders and the connecting pipes, the motor is installed on a top plate of the connecting blocks, and the installation height of the first hydraulic cylinders is lower than that of the top plate.

Further, the ploughshare is the triangular pyramid structure of invering, the ploughshare is in projection on the rectangular plate is isosceles triangle, and the base is towards the drilling rig assembly outside, two isosceles sides are towards inside the drilling rig assembly.

Furthermore, the ploughshare is connected to the push rod of a second hydraulic cylinder, the second hydraulic cylinder is installed on the rectangular plate, the axis of the second hydraulic cylinder is intersected with the central shaft of the rectangular plate, the tail portion of the second hydraulic cylinder faces the center of the rectangular plate, a gap is reserved between the second hydraulic cylinder and the connecting pipe, the ploughshare is provided with a pair of reinforcing rods, the reinforcing rods all slide to penetrate through sliding seats, and the sliding seats are all installed on the rectangular plate.

Further, the reinforcing rods are located on two sides of the second hydraulic cylinder and are arranged at intervals with the axis of the second hydraulic cylinder along the vertical direction.

Furthermore, semicircular grooves are processed in the positions, corresponding to the plowshare, of the four sides of the rectangular plate, and are used for containing the plowshare.

Furthermore, the conical drill is connected with the bottom of the spiral feeding rod through a screw, and the diameter of the large end of the conical drill is larger than that of the connecting pipe.

Further, the spiral feeding rod comprises a spiral feeding plate and a spiral plate which is same in the rotation direction with the spiral feeding plate, the projection of the spiral plate along the axis of the spiral feeding rod covers the range of one fourth to one half of the periphery of the spiral feeding rod, and the spiral feeding plate is collinear with the bottom edge of the spiral plate and intersects with the axis of the spiral feeding rod.

Further, a plurality of wear-resistant heads are arrayed on the bottom edges of the spiral feeding plate and the spiral plate.

The invention has the beneficial effects that:

1. through collapsible dish type drill bit and ploughshare, the not rectangular hole of equidimension can be drilled out to this application, practices thrift the operating cost. The function of utilizing disc type drill bit and the contraction of ploughshare shell equally, the accessible is withdrawed disc type drill bit ploughshare after installing prefabricated pipe additional to reduce drilling equipment's whole volume, the drilling equipment of being convenient for takes out.

2. The earth that drilling produced passes through the spiral feed bar and gets into the connecting pipe, then discharges from arranging the material pipe through the connecting pipe, just can discharge earth in drilling, avoids the rise drilling equipment discharge earth of relapse, very big improvement drilling efficiency.

3. The rectangle pile foundation structure that drills out is regular, drilling equipment mainly implements drilling work through disk type drill bit and conical bit, because disk type drill bit and round structure, there is similar triangle-shaped's space between the adjacent disk type drill bit, this space can make the pile foundation form triangle-shaped's arch, but the less structural strength of the protruding area of triangle-shaped is not high usually, this application is shoveled this triangle-shaped arch through the ploughshare of locating the rectangular plate four sides to the length of stretching out of ploughshare can be adjusted and is convenient for correspond the repairment on limit to the pile foundation.

Drawings

The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure.

FIG. 1 shows the overall construction of the present application;

FIG. 2 shows a top view of an embodiment;

FIG. 3 illustrates the overall construction of the drill disk assembly;

FIG. 4 illustrates a bottom view of the present application in one use configuration;

FIG. 5 shows the configuration of the discharge assembly;

FIG. 6 shows a close-up view at A;

FIG. 7 shows a partial enlarged view at B;

FIG. 8 shows a structure of a rectangular plate;

FIG. 9 shows a partial enlarged view at C;

FIG. 10 shows the positional relationship and connection manner of the connection block, the motor, and the first hydraulic cylinder;

FIG. 11 shows a mounting structure of the plowshare;

FIG. 12 illustrates an embodiment of the present application;

fig. 13 shows another embodiment of the present application.

The labels in the figure are: 10-drilling plate assembly, 11-rectangular plate, 111-sliding chute, 112-strip-shaped hole, 113-pressing plate, 114-semicircular groove, 12-disc-shaped drill bit, 13-motor, 14-ploughshare, 141-reinforcing rod, 15-connecting block, 151-top plate, 16-first hydraulic cylinder, 17-second hydraulic cylinder, 18-sliding seat, 20-discharging assembly, 21-connecting pipe, 22-discharging pipe, 23-spiral feeding rod, 231-spiral feeding plate, 232-spiral plate, 24-conical drill bit and 25-wear-resisting head.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings, but the described embodiments of the present invention are a part of the embodiments of the present invention, not all of the embodiments of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only for convenience of describing the present invention and simplifying the description. The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. The terms "parallel", "perpendicular", etc. do not require that the components be absolutely parallel or perpendicular, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; either directly or indirectly through intervening media, or through both elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 to 5, a drilling apparatus for a rectangular pile foundation includes: a drill plate assembly 10 and a discharge assembly 20.

Specifically, drill plate assembly 10 includes rectangular plate 11, and rectangular plate 11 all slides from the center to four angular directions and is equipped with disk type drill bit 12, and disk type drill bit 12 bottom is the toper, and bottom and week side all are equipped with wear-resisting tooth to in drilling. The disc-type drill bit 12 is provided with an independent motor 13 for driving, so that a transmission mechanism can be avoided, the structure is simpler, and the position adjustment is facilitated. The rotation axis of the disc-type drill 12 is perpendicular to the rectangular plate 11. The rectangular plate 11 is provided with plowshare 14 from the center to the direction vertical to the four sides in a sliding way, and residual soil on the four walls of the pile foundation is scraped by the plowshare 14 and flows down from the gap between two adjacent disk type drill bits 12. In order to make the pile foundation more regular and can be completed once, a plowshare 14 is arranged. Plowshare 14 is arranged between adjacent disc-type drill bits 12.

More specifically, the structure of the plowshare 14 is shown in fig. 11, the plowshare 14 is in an inverted triangular pyramid structure, the bottom of the plowshare 14 is a sharp pointed angle so as to be convenient for inserting soil, the projection of the plowshare 14 on the rectangular plate 11 is in the shape of an isosceles triangle, the bottom edge of the isosceles triangle faces the outer side of the drill plate assembly 10, and the two isosceles sides face the inner side of the drill plate assembly 10.

Specifically, the discharging assembly 20 comprises a connecting pipe 21, a discharging pipe 22 is arranged at the upper section of the connecting pipe 21, and the connecting pipe 21 penetrates through the center of the rectangular plate 11 and is connected with the rectangular plate 11 in a welding manner. A spiral feeding rod 23 coaxially penetrates through the connecting pipe 21, the spiral feeding rod 23 is driven by a motor, and the motor is arranged at the top of the connecting pipe 21. Screw feed rod 23 bottom protrusion connecting pipe 21 for discharge earth, screw feed rod 23 bottom is connected with conical bit 24, utilizes conical bit 24 to drill the space at disk type drill bit 12 middle part, and conical bit 24's position is less than disk type drill bit 12 to the earth that disk type drill bit 12 drilled out piles up above conical bit 12.

More specifically, as shown in fig. 8 and 9, a sliding groove 111 is formed in the surface of the rectangular plate 11 along the sliding direction of the disc-shaped drill 12, a strip-shaped hole 112 having the same length as the sliding groove 111 and being parallel to each other is formed in the bottom of the sliding groove 111, an i-shaped connecting block 15 is slidably disposed on the sliding groove 111, pressing plates 113 are disposed on two sides of the sliding groove 111, the motor 13 is mounted on the top of the connecting block 15, the disc-shaped drill 12 is located below the rectangular plate 11, and a gap between the connecting shafts of the motor 13 and the disc-shaped drill 12 passes through the middle of the connecting block 15.

More specifically, as shown in fig. 1 and 10, the connecting blocks 15 are each connected to a push rod of a first hydraulic cylinder 16, the axis of the first hydraulic cylinder 16 intersects the center axis of the rectangular plate 11, and the tail portion faces the center of the rectangular plate 11, leaving a gap between the first hydraulic cylinder 16 and the connecting pipe 21.

Preferably, the motor 13 is mounted on the top plate 151 of the connecting block 15, and the first hydraulic cylinder 16 is mounted at a lower height than the top plate 151. Like this when retrieving disk-type drill bit 12 the connecting block 15 bottom alright press close to with first pneumatic cylinder 16's position more, the space of the good utilization roof 151 below of individual height is favorable to reducing the erection dimension between first pneumatic cylinder 16 and the connecting block 15 to reduce drilling equipment's overall dimension. Or the connecting block 15 has a longer moving stroke for the same size hour.

More specifically, the plowshare 14 is installed as shown in fig. 10, the plowshare 14 is connected to a push rod of a second hydraulic cylinder 17, the second hydraulic cylinder 17 is installed on the rectangular plate 11, the axis of the second hydraulic cylinder 17 intersects with the central axis of the rectangular plate 11, and the tail part faces the center of the rectangular plate 11. A gap is left between the second hydraulic cylinder 17 and the connecting pipe 21.

Preferably, to enhance the stability of the plow head 14 during operation and prevent deformation. The plowshare 14 is provided with a pair of reinforcing rods 141, the reinforcing rods 141 are all slidably provided with the sliding seats 18 in a penetrating manner, and the sliding seats 18 are all installed on the rectangular plate 11 by bolts.

It is further preferable that the reinforcing rods 141 are located on both sides of the second hydraulic cylinder 17, and in order to increase the vertical strength of the plowshare 14, the reinforcing rods 141 are spaced from the axis of the second hydraulic cylinder 17 in the vertical direction, that is, the reinforcing rods 141 and the push rod of the second hydraulic cylinder 17 are located on different horizontal planes.

Preferably, in order to reduce the size of the drilling device to a smaller size, semicircular grooves 114 are formed on the four sides of the rectangular plate 11 at positions corresponding to the positions of the plowshare 14, and the plowshare 14 can be accommodated in the semicircular grooves 114 when being retracted, so that the projection of the plowshare 14 on the rectangular plate 11 is completely within the outline range of the rectangular plate 11.

Preferably, the conical drill bit 24 is screwed to the bottom of the screw feeder rod 23 to facilitate replacement and installation. The diameter of the large end of the conical drill bit 24 is larger than that of the connecting pipe 21, so that the direct contact between the bottom of the pile foundation and the spiral feeding rod 23 can be prevented, and the damage to the spiral feeding rod 23 is prevented. When drilling the pile foundation with a large size, a large space exists between the 4 disc-type drill bits 12, the disc-type drill bits 12 effectively drill out the soil in the space, and therefore conical drill bits 24 are arranged between the disc-type drill bits 12, and the spiral feed rods 23 are used for driving the conical drill bits 24 to rotate for drilling the positions between the 4 disc-type drill bits 12. The cone 24 may need to be replaced when drilling different sized pilings, with the larger the space between the disc bits 12, the larger the cone 24. However, it is a prerequisite that the disc-type drill bit 12 and the cone-type drill bit 24 be spaced apart sufficiently to facilitate retraction of the disc-type drill bit 12 during the construction mode of laying the prefabricated pipe.

Preferably, as shown in fig. 6, the screw feeding rod 23 includes a screw feeding plate 231 and a screw plate 232 which is rotated in the same direction as the screw feeding plate 231. The screw feeder 231 serves as a main feeding function, and guides the soil generated by drilling into the connection pipe 21 through rotation and then is discharged from the discharge pipe 22. The projection of the spiral plate 232 along the axis of the screw feeding rod 23 covers a range of one fourth to one half of the periphery of the screw feeding rod 23, and the main purpose of the projection is to assist the soil to enter the connecting pipe 21 and increase the entering speed of the soil. The screw plate 231 is collinear with the bottom edge of the screw plate 232 and intersects the screw rod 23 axis.

Preferably, as shown in fig. 7, a plurality of wear-resistant heads 25 are arranged at the bottom edges of the spiral feeding plate 231 and the spiral plate 232, the wear-resistant heads 25 can improve the strength of the end faces of the spiral feeding plate 231 and the spiral plate 232, and are also beneficial to breaking soil, so that the spiral feeding plate 231 and the spiral plate 232 can be inserted into soil, and the soil can enter the connecting pipe 21 more easily and can be discharged.

The specific implementation mode is as follows: the device is arranged on the engineering mechanical arm through the connecting pipe 21, and the device can move up and down relative to the engineering mechanical arm through the connecting pipe 21 after being arranged.

Before use, the proper conical drill bit 24 is firstly selected according to the size of a drilled hole, and then the disc-type drill bit 12 and the plowshare 14 are adjusted to proper positions. Drilling can then commence.

During drilling, the disc-type drill bit 12 and the conical drill bit 24 play a main drilling role, soil at the bottom is loosened, and residual soil around the pile foundation is scraped by the plowshare 14. Adjacent disc bits 12 rotate in opposite directions, i.e., two pairs of adjacent disc bits 12 push the earth toward the middle of the drill plate assembly 10, causing the earth to accumulate at the top and periphery of the cone bits 24 to facilitate the entry of earth into the discharge assembly 20.

In the construction suitable for laying the prefabricated pipe, the drill plate assembly 10 shown in fig. 12 is constructed at the bottom of the pile foundation, and the prefabricated pipe is laid from top to bottom in sequence to prevent the pile foundation side slope from collapsing. After the drilling is completed, the disc-type drill bit 12 is furled by the first hydraulic cylinder 16, the plowshare 14 is furled by the second hydraulic cylinder 17 to form a state shown in fig. 13, and then the drill disc assembly 10 is taken out.

The foregoing is only a preferred embodiment of the present invention and is not intended to be exhaustive or to limit the invention. It will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention.

Claims

1. A drilling device for rectangular pile foundations, comprising:

the drilling disc assembly (10) comprises a rectangular plate (11), disc-shaped drill bits (12) are arranged on the rectangular plate (11) in a sliding mode from the center to four corners, the disc-shaped drill bits (12) are provided with single motors (13), the rotating shaft of each disc-shaped drill bit (12) is perpendicular to the rectangular plate (11), and plowshares (14) are arranged on the rectangular plate (11) in a sliding mode from the center to the direction perpendicular to the four sides;

arrange material assembly (20), including connecting pipe (21), connecting pipe (21) upper segment is equipped with row material pipe (22), connecting pipe (21) pass rectangular plate (11) center, and with rectangular plate (11) link to each other, coaxial wear to be equipped with spiral feed rod (23) in connecting pipe (21), spiral feed rod (23) bottom protrusion connecting pipe (21), spiral feed rod (23) bottom is connected with conical bit (24).

2. The drilling device for the rectangular pile foundation according to claim 1, wherein a sliding groove (111) is formed in the surface of the rectangular plate (11) along the sliding direction of the disc-type drill bit (12), strip-shaped holes (112) which are parallel to each other and have the same length as the sliding groove (111) are formed in the bottom of the sliding groove (111), the sliding groove (111) is slidably provided with an I-shaped connecting block (15), pressing plates (113) are arranged on two sides of the sliding groove (111), the motor (13) is installed on the top of the connecting block (15), the disc-type drill bit (12) is located below the rectangular plate (11), and a connecting shaft gap between the motor (13) and the disc-type drill bit (12) penetrates through the middle part of the connecting block (15) and the strip-shaped holes (112).

3. A drilling device for rectangular pile foundation according to claim 2, wherein the connecting blocks (15) are all connected to the push rod of a first hydraulic cylinder (16), the axis of the first hydraulic cylinder (16) intersects the central axis of the rectangular plate (11) and the tail part faces to the center of the rectangular plate (11), a gap is left between the first hydraulic cylinder (16) and the connecting pipe (21), the motor (13) is mounted on the top plate (151) of the connecting block (15), and the mounting height of the first hydraulic cylinder (16) is lower than that of the top plate (151).

4. A drilling device for rectangular pile foundation according to claim 1, wherein the plowshare (14) is in an inverted triangular pyramid structure, the projection of the plowshare (14) on the rectangular plate (11) is in an isosceles triangle shape, the bottom edge faces the outer side of the drill plate assembly (10), and the two isosceles edges face the inner side of the drill plate assembly (10).

5. The drilling device for the rectangular pile foundation as claimed in claim 1, wherein the plowshare (14) is connected to a push rod of a second hydraulic cylinder (17), the second hydraulic cylinder (17) is installed on the rectangular plate (11), the axis of the second hydraulic cylinder (17) is intersected with the central axis of the rectangular plate (11), the tail part of the second hydraulic cylinder faces the center of the rectangular plate (11), a gap is reserved between the second hydraulic cylinder (17) and the connecting pipe (21), the plowshare (14) is provided with a pair of reinforcing rods (141), the reinforcing rods (141) are respectively provided with a sliding seat (18) in a sliding mode, and the sliding seats (18) are respectively installed on the rectangular plate (11).

6. A drilling device for rectangular pile foundations according to claim 5, characterized in that the reinforcement bars (141) are located on both sides of the second hydraulic cylinder (17) and are vertically spaced from the axis of the second hydraulic cylinder (17).

7. The drilling device for the rectangular pile foundation according to claim 1, wherein semicircular grooves (114) are formed on four sides of the rectangular plate (11) at positions corresponding to the plowshare (14) and used for accommodating the plowshare (14).

8. A drilling device for rectangular pile foundation according to claim 1, wherein the conical drill bit (24) is screwed to the bottom of the screw feeding rod (23), and the diameter of the large end of the conical drill bit (24) is larger than that of the connecting pipe (21).

9. The drilling device for the rectangular pile foundation according to claim 1, wherein the spiral feeding rod (23) comprises a spiral feeding plate (231) and a spiral plate (232) which is screwed in the same direction as the spiral feeding plate (231), the projection of the spiral plate (232) along the axis of the spiral feeding rod (23) covers the range of one fourth to one half of the periphery of the spiral feeding rod (23), and the spiral feeding plate (231) is collinear with the bottom edge of the spiral plate (232) and intersects with the axis of the spiral feeding rod (23).

10. The drilling device for the rectangular pile foundation as claimed in claim 9, wherein a plurality of wear-resistant heads (25) are arrayed at the bottom edges of the spiral feeding plate (231) and the spiral plate (232).