CN218991484U

CN218991484U - Power head of compaction type deep drilling CFG pile machine

Info

Publication number: CN218991484U
Application number: CN202320285482.4U
Authority: CN
Inventors: 袁志刚
Original assignee: Shanxi Zhongcheng Machinery Equipment Manufacturing Co ltd
Current assignee: Shanxi Zhongcheng Machinery Equipment Manufacturing Co ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-05-09
Anticipated expiration: 2033-02-22

Abstract

The utility model discloses a power head of a compaction type deep drilling CFG pile machine, which comprises a power head shell, a hollow drill sleeve and a plurality of key blocks, wherein the power head shell is used for being connected with a mast of the CFG pile machine, the drill sleeve is arranged in the power head shell, openings are formed in positions, corresponding to two ends of the drill sleeve, of the power head shell, the drill sleeve is used for fixing the upper section of a drilling tool of the CFG pile machine in a variable position, the key blocks are in a strip shape and are fixed on the inner wall of the drill sleeve, the length direction of the key blocks is parallel to the axial direction of the drill sleeve, the key blocks are uniformly distributed along the circumference of the inner wall of the drill sleeve, and the key blocks are used for being clamped with the drilling tool to transmit power. The power head of the compaction type deep drilling CFG pile machine is provided with the drill sleeve which can enable the drilling tool to pass through, and the drilling tool and the drill sleeve can slide relatively, rotate relatively and lock relatively, so that the length of the drilling tool is not limited by the height of the mast any more, and deeper drilling can be drilled.

Description

Power head of compaction type deep drilling CFG pile machine

Technical Field

The utility model relates to the technical field of CFG pile machines, in particular to a power head of a compaction type deep drilling CFG pile machine.

Background

The CFG pile machine is foundation and foundation treatment equipment, is suitable for CFG construction methods, precast piles, cast-in-place piles, underground continuous walls, soft foundation reinforcement and the like, is particularly suitable for pile foundation construction of settling projects, and can also be used as hole forming equipment for cast-in-place piles and cast-in-place piles. The hydraulic crawler-type chassis is adopted, so that the degree of automation is high, and the robot can walk and rotate by 360 degrees. A plurality of hydraulic cylinders are matched, and the hydraulic cylinders comprise four hydraulic support leg cylinders. The foldable box-shaped upright post is adopted, and is formed by bending two high-strength mask plates, so that the problem of weld joint cracking caused by splicing welding of four plates in the traditional process is solved; meanwhile, four reinforcing ribs are welded in the vertical column at intervals of 60cm, so that the torsion resistance and the bending resistance of the vertical column are improved. The lifting main frame is controlled by two amplitude-variable hydraulic cylinders, so that the automatic lifting is realized. The hydraulic power type power head drives the hollow spiral drilling tool to perform long spiral hole forming, concrete or slurry can be pumped into the pile hole through the drill rod central tube, and the working procedures of drilling, grouting, pulling out the drill, forming the hole and the like can be completed once.

In the existing CFG pile machine, a drill rod is connected to the bottom of a power head through a connecting device, the power head is arranged on a stand column, and although the power head can move up and down along the stand column in a certain range, the height of the power head cannot exceed the stand column, so that the height of the drill rod cannot exceed the stand column, and therefore, the drill rod cannot drill deeper holes due to the limitation of the height of the stand column.

Disclosure of Invention

Therefore, the utility model provides a power head of a compaction type deep drilling CFG pile machine, which aims to solve the technical problem that deeper drilling holes cannot be drilled due to the fact that a drill rod is connected to the bottom of the power head and limited by the height of an upright post.

In order to achieve the above object, the present utility model provides the following technical solutions:

the utility model provides a power head of crowded close type deep drilling CFG stake machine, includes power head casing, hollow drill bushing and a plurality of key piece, the power head casing is used for being connected with the mast of CFG stake machine, the drill bushing sets up in the power head casing, the power head casing correspond the position at the both ends of drill bushing is equipped with the opening, the drill bushing is used for the fixed of variable position the upper segment of the drilling tool of CFG stake machine, the key piece is the bar, fixes the inner wall of drill bushing, and length direction with the axial parallel of drill bushing, a plurality of key pieces are followed the inner wall week side evenly distributed of drill bushing, the key piece be used for with drilling tool joint is in order to transmit power.

Further, the power head further comprises two variable hydraulic motors, and the two variable hydraulic motors are in transmission connection with the drill bushing.

Further, the power head further comprises two speed reducers, the input ends of the two speed reducers are connected with the output ends of the two variable hydraulic motors in one-to-one correspondence, and the output ends of the two speed reducers are connected with the drill bushing in a transmission mode.

Further, the power head further comprises two guide sleeves, the two guide sleeves are respectively positioned at two ends of the drill sleeve, and the guide sleeves and the drill sleeve are coaxially arranged.

The utility model has the following advantages:

the power head is provided with a hollow drill sleeve, so that a drilling tool can pass through the power head, and the drilling tool and the drill sleeve can relatively slide (axially) and relatively rotate and can relatively lock (axially lock and circumferentially lock), so that the length of the drilling tool is not limited by the height of a mast (a stand column in the background art), and deeper drilling can be drilled.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments may be derived from the drawings provided without undue effort.

The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the utility model, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present utility model, should fall within the scope of the utility model.

FIG. 1 is a schematic structural view of a compaction deep drilling CFG pile machine;

FIG. 2 is a schematic diagram of a power head;

FIG. 3 is a schematic view of another view of the power head;

fig. 4 is a front view (partial cut-away) of the power head.

FIG. 5 is a schematic structural view of a drilling tool;

FIG. 6 is a schematic view of the lower end of the drilling tool;

FIG. 7 is a schematic illustration of the upper locking structure of the universal drill rod at the upper end of the drill;

fig. 8 is a schematic view of the lower locking structure of the universal drill rod at the upper end of the drill.

In the figure: 1-walking chassis, 2-rotary platform, 3-mast, 4-pressurizing winch equipment, 5-power head, 51-power head shell, 52-drill bushing, 53-variable hydraulic motor, 54-speed reducer, 55-guide bushing, 56-key block, 6-drilling tool, 61-drill bit, 62-compaction drill rod, 63-spiral drill rod, 64-general drill rod, 641-middle key groove, 642-left key groove, 643-right key groove, 644-round tube, 645-upper pressurizing block, 646-key bar, 647-lower pressurizing block, 648-main pressurizing block, 7-hydraulic system and 8-electric control system.

Detailed Description

Other advantages and advantages of the present utility model will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The terms such as "upper", "lower", "left", "right", "middle" and the like are also used in the present specification for convenience of description, but are not intended to limit the scope of the present utility model, and the changes or modifications of the relative relationship thereof are considered to be within the scope of the present utility model without substantial modification of the technical content.

As shown in fig. 1 to 8, the present embodiment provides a compact deep drilling CFG pile machine, which is an improvement over the existing CFG pile machine, at least in terms of the power head and the drilling tool.

The CFG pile machine comprises a walking chassis 1, a rotary platform 2, a pressurizing winch device 4, a mast 3 (also called a column), a power head 5, a hydraulic system and an electric control system. The rotary platform 2 is arranged on the walking chassis 1. The power head 5 is arranged on the track of the mast 3 and can slide up and down to realize drilling operation, the mast 3 is integrally arranged on the rotary platform 2 and can rotate along with the platform, so that a plurality of pile holes can be drilled conveniently at one station vehicle position, and the working efficiency of the whole machine is greatly improved. The pressurized hoisting device 4 is mounted on the rotary platform 2 and connected to the power head 5 by means of a wire rope to control the movement of the power head 5 along the mast 3. The hydraulic system is connected with the power head 5 to provide power for the power head 5, the power is provided by a hydraulic cylinder or a hydraulic motor, the hydraulic cylinder is arranged on the supporting leg on the rotary platform 2 to provide more stable support for the pile driver during working, and the hydraulic motor provides power for drilling of the pile driver; the constant-power hydraulic pump adopted by the full-hydraulic power system can ensure that the motor always works in an optimal working state close to rated power through automatic adjustment of the system, and ensure that the torque of the power head 5 is suitable for different stratum power demands. The electrical control system is in control connection with the hydraulic system and the pressurizing winch equipment 4 to control the automatic drilling process; for example, the method can be implemented by a PLC, so that the operation difficulty of personnel can be greatly reduced, and the PLC control program can automatically adjust the drilling speed according to the pressure of a drilling hydraulic system, so that the device is suitable for the drilling requirements of different stratum. The technical solution in this paragraph is a common technique of the existing CFG pile machine, and is therefore not described.

The CFG stake machine of this embodiment is the equipment after the improvement, has the characteristics that bore more deeply, the play is less after the improvement. The hollow power head 5 is adopted for deeper drilling, the drilling tool 6 provided with the compaction drill rod 62 is adopted for less soil discharging, and the two characteristics are specifically described below.

In this embodiment, the improved power head 5 includes a power head housing 51, a hollow drill sleeve 52, two variable displacement hydraulic motors 53, two speed reducers 54, and two guide sleeves 55. The power head housing 51 is connected to the mast 3 and is slidably movable with power along the mast 3, the power being derived from the pressurized hoisting apparatus 4. A drill bushing 52 is rotatably arranged in the power head housing 51, the axis of the drill bushing 52 being parallel to the axis of the mast 3. The positions of the power head shell 51 corresponding to the two ends of the drill sleeve 52 are provided with openings, and guide sleeves 55 are arranged at the openings to prevent the drill rod from shaking greatly in the drill sleeve 52; the guide sleeve 55 is similar to a bearing, the diameter of the inner ring is equal to that of the corresponding position of the drill rod, the inner ring can rotate freely, and the outer ring is used for being fixed relative to the power head shell 51. Two speed reducers 54 are fixed on the upper side of the power head housing 51, the two speed reducers 54 are arranged on two sides of a guide sleeve 55 on the upper side, and the output end of each speed reducer 54 is positioned in the power head housing 51 and is in transmission connection with the drill sleeve 52, such as gear transmission, chain transmission or belt transmission. The two variable hydraulic motors 53 are fixed on the two speed reducers 54 in a one-to-one correspondence manner, and the output ends of the variable hydraulic motors 53 are connected with the input ends of the speed reducers 54. Optionally, two sets of lubricant delivery pumps are provided within the housing of the speed reducer 54, the pumps acting to deliver lubricant to the gears within the speed reducer 54 and gearbox to reduce wear during movement between the gears. The variable hydraulic motor 53 and the speed reducer 54 can be purchased directly on the market without redesigning. Three bar-shaped key blocks 56 are arranged in the drill sleeve 52, the length direction of the key blocks is parallel to the axis of the drill sleeve 52, the three key blocks 56 are uniformly distributed on the periphery of the inner wall of the drill sleeve 52 and fixed on the drill sleeve 52 through bolts, and the key blocks are used for transmitting torque to a drill rod to provide power for drilling of the drilling tool 6.

The upper section of the drill tool 6 (generally referred to as the uppermost section of the universal drill rod 64) is threaded into the drill sleeve 52 and is axially slidable, axially rotatable and lockable within the drill sleeve 52. The circumference side of the universal drill rod 64 is provided with three lower locking structures and upper locking structures corresponding to the key blocks 56, a key groove group is formed between the adjacent locking structures on the circumference side, the key groove group comprises a middle key groove 641, a left key groove 642 communicated with the left side of the middle key groove 641 and a right key groove 643 communicated with the right side of the middle key groove 641, the upper end and the lower end of the left key groove 642 and the right key groove 643 are both closed, the length is not smaller than the length of the key blocks 56, the lower ends of the left key groove 642 and the right key groove 643 are generally flush, the upper end of the left key groove 642 is higher than the upper end of the right key groove 643 (namely, the left key groove 642 is longer than the right key groove 643), the upper end and the lower end of the middle key groove 641 of the lower locking structure are both open, the lower end of the middle key groove 641 of the upper locking structure is open, and the upper end is closed. In this embodiment, the upper locking structure includes a circular tube 644, an upper pressurizing block 645 and a key 646, the circular tube 644 is sleeved and fixed on the universal drill pipe 64, the plurality of upper pressurizing blocks 645 are uniformly fixed on the circumferential side of the universal drill pipe 64, the plurality of key 646 are uniformly fixed on the circumferential side of the universal drill pipe 64, and the key 646 is located between the circular tube 644 and the upper pressurizing block 645. In the present embodiment, the lower locking structure includes a lower pressurizing block 647, a main pressurizing block 648 and a key bar 646, the plurality of lower pressurizing blocks 647 are uniformly fixed on the circumferential side of the universal drill pipe 64, the plurality of main pressurizing blocks 648 are uniformly fixed on the circumferential side of the universal drill pipe 64, the plurality of key bars 646 are uniformly fixed on the circumferential side of the universal drill pipe 64, and the key bar 646 is located between the lower pressurizing block 647 and the main pressurizing block 648. Typically, the locking mechanism is installed outside of a common drill pipe 64 in the shop; the universal drill rod 64 is located in the uppermost section of the assembled drilling tool 6.

When the universal drilling tool 6 is used, the universal drilling tool 6 is arranged in the drill bushing 52 in a penetrating way, the key block 56 firstly penetrates into the middle key groove 641 of the lower locking structure, after the drill bushing 52 rotates forward (means steering during drilling) by a certain angle, the key block 56 enters into the left key groove 642 (related to the rotation direction of a spiral sheet body, when the spiral sheet body is reversely screwed, the key block 56 enters into the right key groove 643), at the moment, the drill bushing 52 rotates forward, the drilling tool 6 only rotates forward along with the drill bushing 52, circumferential locking is completed, and because the key block 56 enters into the left key groove 642 with the upper end and the lower end closed, and the whole power head 5 has a downward moving trend under the driving of the pressurizing winch equipment 4, the drilling tool 6 can only be driven to move downwards by the drill bushing 52, and axial locking is completed; when the drill sleeve 52 is reversed, the key block 56 is firstly put into the right key slot 643, and then the drill is pulled out; in this way, axial sliding, axial rotation and locking of the drilling tool 6 within the drill sleeve 52 is achieved. When the power head 5 is clamped by the lower locking structure and moves to the lowest position, the drill sleeve 52 is reversed by a certain angle, so that the key block 56 is positioned in the middle key groove 641, the power head 5 is lifted to the upper locking structure for locking again, and drilling is performed again, so that the purpose of drilling deeper holes is achieved.

The power head 5 is provided with a hollow drill sleeve 52, so that the drilling tool 6 can pass through the power head 5, and the drilling tool 6 and the drill sleeve 52 can slide relatively axially, rotate relatively and can be locked relatively (axially and circumferentially), so that the length of the drilling tool 6 is not limited by the height of the mast 3 (upright in the background art), and deeper drilling can be drilled; the hollow power head 5 can realize deeper drilling depth at a lower overall height, and meanwhile ensures that the height of the mast 3 is relatively lower, so that the overall gravity center height of the equipment is reduced, and the overall stability of the equipment is improved.

The drilling tool 6 generally comprises a multi-section universal drill pipe 64, a drill pipe 63 and a drill bit 61, and in this embodiment, a compaction drill pipe 62 is added between the drill pipe 63 and the drill bit 61. The drill bit 61 is arranged at the lowest part of the drilling tool 6 and is provided with a small section of spiral sheet body (in the embodiment, the drill bit 61, the compaction drill rod 62 and the spiral drill rod 63 are all spiral sheet bodies with the same rotation direction) and the functions of drilling, loosening soil and conveying formation tissues loosened in the drilling process upwards; the top of the drill bit 61 is provided with an openable cover door which is always closed under the action of pressure during drilling, and when the drill bit 61 is lifted, the cover door is opened under the action of gravity, and concrete can be poured into the drilled hole from the central pipe. The compaction drill rod 62 is connected to the upper end of the drill bit 61, the spiral sheet body is arranged on the periphery of the compaction drill rod 62, the rod body diameter of the compaction drill rod 62 gradually increases from bottom to top along the spiral trend to be equal to the outer diameter of the spiral sheet body, and a spiral extrusion angle is formed. A auger stem 63 is attached to the upper end of the compaction stem 62 and serves to transmit torque, provide guidance for drilling and repair of the pile hole wall. The universal drill pipe 64 is connected in sequence to ultimately form a length of drill 6. The insides of the universal drill rod 64, the compaction drill rod 62 and the spiral drill rod 63 are respectively provided with a central hole, so that a channel is provided for concrete pouring. The universal drill rod 64, the auger stem 63, and the drill bit 61 are all commercially available without redesign.

The diameter of the rod body of the compaction drill rod 62 gradually increases from bottom to top along the spiral trend to be equal to the outer diameter of the spiral sheet body, and stratum tissues drilled by the drill bit 61 are extruded to the periphery in the drilling process, so that the stratum tissues in the drilling process cannot be reflected out of the ground, the transportation of earthwork is avoided, the compactness of soil around the hole wall is increased, and the bearing capacity of the pile is increased.

While the utility model has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the utility model and are intended to be within the scope of the utility model as claimed.

Claims

1. The utility model provides a power head of crowded close type deep drilling CFG stake machine, its characterized in that includes power head casing, hollow drill bushing and a plurality of key piece, the power head casing is used for being connected with the mast of CFG stake machine, the drill bushing sets up in the power head casing, the power head casing correspond the position at the both ends of drill bushing is equipped with the opening, the drill bushing is used for the fixed of variable position the upper segment of the drilling tool of CFG stake machine, the key piece is the bar, fixes the inner wall of drill bushing, and length direction with the axial parallel of drill bushing, a plurality of the key piece is followed the inner wall week side evenly distributed of drill bushing, the key piece be used for with drilling tool joint is in order to transmit power.

2. The power head of the compaction deep drilling CFG pile machine according to claim 1, further comprising two variable hydraulic motors, both of which are in driving connection with the drill bushing.

3. The power head of the compaction type deep drilling CFG pile machine according to claim 2, further comprising two speed reducers, wherein the input ends of the two speed reducers are connected with the output ends of the two variable hydraulic motors in one-to-one correspondence, and the output ends of the two speed reducers are in transmission connection with the drill bushing.

4. The power head of the compaction type deep drilling CFG pile machine according to claim 1, wherein the power head further comprises two guide sleeves, the two guide sleeves are respectively positioned at two ends of the drill sleeve, and the guide sleeves are coaxially arranged with the drill sleeve.