CN210829122U - Pile machine drill rod and pile machine thereof - Google Patents

Pile machine drill rod and pile machine thereof Download PDF

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Publication number
CN210829122U
CN210829122U CN201920806149.7U CN201920806149U CN210829122U CN 210829122 U CN210829122 U CN 210829122U CN 201920806149 U CN201920806149 U CN 201920806149U CN 210829122 U CN210829122 U CN 210829122U
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drill rod
transmission
blade
rotating
pile machine
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CN201920806149.7U
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周兆弟
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周兆弟
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Abstract

The utility model provides a pile machine drill rod and a pile machine thereof, wherein the pile machine drill rod comprises a drill rod body which is provided with a transmission part and a drill bit which is arranged at the lower end of the transmission part; wherein, the transmission part is equipped with a plurality of minutes bodies of turning along the axial direction cover in proper order, and each minute body of turning sets up the helical blade that more than the round extends along the drill rod body axial, sets up variable speed drive mechanism between each minute body of turning and the transmission part respectively. The utility model discloses a variable speed drive mechanism changes each rotational speed that divides the body of turning, makes each divide the differential rotation between the body of turning, and when needs deceleration, transmission portion need not the deceleration, through variable speed drive mechanism, reduces each rotational speed that divides the body of turning, makes helical blade's rotational speed descend, obtains bigger moment of torsion, and each divides the helical blade's that the body of turning rotational speed different moreover, and the moment of torsion is also diverse, consequently can strengthen expanding native effect, improves drilling efficiency down.

Description

Pile machine drill rod and pile machine thereof
Technical Field
The utility model relates to a stake machine technical field especially relates to a stake machine drilling rod and stake machine thereof.
Background
At present, there are two types of piling machines used on construction sites: one is a rotary pile driver, the structure of the pile driver is pile driving equipment which utilizes a drill rod suspension bracket pulled up by a winch and drives a drill rod drill bit to drill downwards to the ground through a power head; the other type is an impact pile driver, and the structure of the pile driver is that a winch is used for pulling an impact hammer to fall repeatedly and lift the impact hammer to realize pile driving.
The prior art discloses a pile driver drill rod subassembly, including the hollow drilling rod body, drilling rod body one end has drill point pyramis, the one end circumference outside that is equipped with sharp pyramis at the drilling rod body is equipped with the helical bit blade that is the heliciform and distributes the setting, helical bit blade one end extends to drill point pyramis, the other end links to each other with the whitewashing seat of radial setting in the drilling rod body outside, whitewashing seat has at least one whitewashing hole that links to each other with the drilling rod body inside towards one side of drill point pyramis, and the aperture in whitewashing hole grow gradually from inside to outside.
However, in the above structure, the drill rod of the pile machine is drilled downwards in the process, when the drill rod meets the condition of large soil layer hardness, the whole rotating speed of the drill rod is generally required to be reduced, but the drill bit at the head of the drill rod is difficult to drill into the soil body, the drilling efficiency is reduced after the rotating speed of the drill rod is reduced, and the stirring effect on the soil body is poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's not enough, provide a improve stake machine drilling rod of efficiency of drilling down.
For solving the technical problem, the utility model discloses a following technical scheme:
a drill rod of a pile machine comprises a drill rod body formed with a transmission part and a drill bit arranged at the lower end of the transmission part;
the transmission part is sequentially sleeved with a plurality of sub-rotating bodies in the axial direction, each sub-rotating body is provided with more than one circle of spiral blades extending in the axial direction of the drill rod body, variable speed transmission mechanisms are respectively arranged between each sub-rotating body and the transmission part, and the rotating speeds of the corresponding sub-rotating bodies are respectively changed through each variable speed transmission mechanism, so that differential rotation is formed between each sub-rotating body.
Preferably, the variable transmission mechanism is a planetary gear set, the transmission ratio of each variable transmission mechanism decreases sequentially along the direction from top to bottom of the drill rod body, and the rotating speed of each rotating body increases sequentially when the drill rod body rotates.
Preferably, the variable speed transmission mechanism comprises a sun gear, an inner gear ring and a plurality of planetary gears, wherein the sun gear is arranged on the transmission part and synchronously rotates along with the transmission part, the inner gear ring is arranged at the concave position of the inner wall of the sub-rotating body, and the planetary gears are engaged and assembled between the inner gear ring and the sun gear;
wherein, the rotating shaft of the planetary gear is arranged at the concave part of the inner wall of the rotating body.
Preferably, in the direction from top to bottom along the drill rod body, the radius of gyration of each helical blade reduces in proper order, the outward flange of helical blade is equipped with a plurality of roller sword that autonomically rotate when drilling down.
Preferably, the roller cutters are arranged at intervals around the spiral track of the spiral blade;
preferably, the central axis of the roller blade is perpendicular to the central axis of the helical blade.
Preferably, a plurality of stirring blade groups which are arranged axially at intervals along the drill rod body are arranged above the transmission part of the drill rod body;
preferably, the drilling radius of the spiral blade of the uppermost rotating body is greater than or equal to the maximum stirring radius of the stirring blade group;
the transmission part is an elongated shaft end which is axially and integrally formed at the lower end of the drill rod body.
Preferably, the stirring blade group comprises more than two stirring blades distributed at intervals along the circumferential direction of the drill rod body, and the length direction of each stirring blade is perpendicular to the central axis of the drill rod body;
preferably, the blade surface of the stirring blade is inclined to the central axis of the drill rod body, and when viewed in the front view direction of the drill rod of the pile machine, at least part of the blade surface of the stirring blade is inclined downwards in a clockwise direction, or at least part of the blade surface of the stirring blade is inclined downwards in a counterclockwise direction.
Preferably, the roller cutters are arranged on at least part of the stirring blades, and the central axes of the roller cutters are parallel to the central axis of the drill rod body.
Preferably, a dynamic sealing structure is arranged at a contact surface between the sub-rotating bodies, and/or a dynamic sealing structure is arranged at a contact surface between the sub-rotating body close to the drill rod body and the drill rod body.
Another object of the utility model is to provide a stake machine of including above-mentioned stake machine drilling rod.
The utility model has the advantages that: the transmission part drives the sub-rotors to synchronously move, the variable speed transmission mechanism is arranged between the sub-rotors and the transmission part, the variable speed transmission mechanism changes the rotating speed of each sub-rotor to enable the sub-rotors to rotate in a differential mode, the rotating speed of the drill bit is always the same as that of the transmission part when the drill bit is drilled down, the drill bit can be ensured to enter a soil body more easily, when the speed is required to be reduced, the transmission part does not need to reduce the speed, namely the drill bit does not need to reduce the speed, the rotating speed of each sub-rotor is reduced through the variable speed transmission mechanism, the rotating speed of the spiral blades on each sub-rotor is reduced, larger torque is obtained, the rotating speeds of the spiral blades of each sub-rotor are different, and the torques are different, so that the soil expanding effect can.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of an embodiment of the present invention;
fig. 3 is a partially enlarged view of fig. 2 at the letter a.
Detailed Description
In order to facilitate understanding of the technical solutions of the present invention, the following detailed description is made with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the utility model discloses a drill rod of a pile machine, which comprises a drill rod body 1 formed with a transmission part 11 and a drill bit 12 arranged at the lower end of the transmission part 11; the transmission part 11 is sequentially sleeved with a plurality of sub-rotating bodies 2 along the axial direction, each sub-rotating body 2 is provided with more than one circle of spiral blades 21 extending along the axial direction of the drill rod body 1, the variable speed transmission mechanisms 3 are respectively arranged between each sub-rotating body 2 and the transmission part 11, and the rotating speed of the corresponding sub-rotating body 2 is respectively changed through each variable speed transmission mechanism 3, so that differential rotation is formed between each sub-rotating body.
In the structure, the transmission part 11 drives the sub-rotating bodies 2 to move synchronously, the variable speed transmission mechanism 3 is arranged between the sub-rotating bodies 2 and the transmission part 11, the rotating speed of each sub-rotating body 2 is changed through the variable speed transmission mechanism 3, so that the sub-rotating bodies 2 rotate in a differential way, when drilling, the rotating speed of the drill bit 12 is always the same as that of the transmission part 11, which can ensure that the drill bit 12 can enter the soil body more easily, preferably, the variable speed transmission mechanism 3 is a speed reduction transmission mechanism, when the speed reduction is needed, the speed reduction of the transmission part 11 is not needed, namely the speed reduction of the drill bit 12 is not needed, the rotating speed of each rotating body 2 is reduced through the variable speed transmission mechanism 3, the rotating speed of the helical blades 21 on each rotating body 2 is reduced, larger torque is obtained, and the spiral blades 21 of each sub-rotating body 2 have different rotating speeds and different torques, so that the soil spreading effect can be enhanced, and the drilling efficiency is improved. Wherein, the drill bit 12 and the transmission part 11 can be fastened by a fastener or fixed by welding. The transmission part 11 is an elongated shaft end which is axially and integrally formed at the lower end of the drill rod body 1
Certainly, in order to make the utility model discloses a stake machine drilling rod can be applied to the use of cement mixing stake machine, and the drilling rod body 1 is hollow cylindric with the transmission portion 11 in order to form defeated thick liquid passageway (not shown in the figure) to set up the grout jet (not shown in the figure) that is linked together with defeated thick liquid passageway at the tip of drill bit 12, when the drilling rod is rotatory, can follow the grout jet department of drill bit 12 and spout mud or cement ash, and mix with earth.
Further, in the present embodiment, the speed change transmission mechanisms 3 are planetary gear sets, and the transmission ratio of each speed change transmission mechanism 3 decreases in sequence along the direction from top to bottom of the drill rod body 1, and the rotation speed of each rotating body 2 increases in sequence when the drill rod body 1 rotates.
In the above structure, because the hardness of the lower soil body is relatively high, generally the rotation speed needs to be reduced to obtain a larger torque, which results in that the rotation speed of the drill bit 12 is also reduced, and the contact area between the drill bit and the soil body is relatively small, so that the rotation speed of the drill bit 12 does not need to be reduced, otherwise the drill bit 12 is not easy to drill into the soil body, by adopting the above structure, under the condition that the rotation speed of the drill rod body 1 is not changed, the rotation speed of each sub-rotating body 2 is sequentially increased from top to bottom along the drill rod body 1 through the variable speed transmission mechanism 3, so that the rotation speed of the helical blades 21 on each sub-rotating body 2 is sequentially increased from top to bottom, the rotation speed of the helical blades 21 can be reduced without reducing the rotation speed of the drill rod body 1, a larger torque is obtained, and the rotation speed of the helical blades 21 of each sub-rotating body 2 is sequentially increased, the rotating speed reduction amplitude of the spiral blade 21 at the bottommost layer is minimized, the influence of the reduction of the drilling speed caused by the reduction of the whole rotating speed of the spiral blade 21 is reduced, the spiral blades 21 above are sequentially reduced, the torque is sequentially increased, the soil expanding effect of the spiral blades can achieve the due effect, the reduction of the drilling efficiency caused by the reduction of the rotating speed is avoided, and the soil expanding effect is ensured.
As shown in fig. 3, further, the speed change transmission mechanism 3 includes a sun gear 31 disposed on the transmission part 11 and rotating synchronously with the transmission part 11, an inner gear ring 32 disposed at a recess of an inner wall of the rotating body 2, and a plurality of planet gears 33 engaged and assembled between the inner gear ring 32 and the sun gear 31; wherein, the rotation shaft 331 of the planetary gear 33 is installed at the inner wall recess of the rotating body 2.
In the above structure, when the transmission part 11 rotates along with the drill rod body 1, the sun gear 31 is driven to rotate, because the rotating shaft 331 of the planetary gear 33 is installed at the concave position of the inner wall of the rotating body 2, the planetary gear 33 can only rotate and cannot revolve around the sun gear 31, so the power can be directly transmitted to the inner gear ring 32 of the rotating body 2, the rotating body 2 is driven to rotate by the inner gear ring 32, and the power attenuation generated by the revolution of the planetary gear 33 is reduced. Of course, since the transmission ratio of each speed change transmission mechanism 3 is sequentially reduced in the direction along the drill rod body 1 from top to bottom, the specifications of the corresponding inner gear ring 32, sun gear 32, and planetary gears 33 are also reduced.
In addition, due to the differential rotation between the sub-rotating bodies 2, there is relative movement between the sub-rotating bodies 2, which inevitably causes the problem of connecting gaps between the sub-rotating bodies, and in the actual working process, foreign matters such as underground soil, sand and the like easily enter the planetary gear set through the connecting gaps to influence the normal operation of the sub-rotating bodies 2, so a dynamic sealing structure is arranged at the contact surface between the sub-rotating bodies 2, and/or a dynamic sealing structure is arranged at the contact surface between the sub-rotating body 2 close to the drill rod body 1 and the drill rod body 1. Specifically, a tongue-and-groove structure (not shown) is provided at the contact surface between the adjacent sub-rotators 2 and the contact surface between the sub-rotators 2 and the drill rod body 1, and a sealing strip is provided in the tongue-and-groove structure, thereby preventing foreign matters from entering the planetary gear train.
Furthermore, the turning radius of each helical blade 21 decreases in sequence along the direction from top to bottom of the drill rod body 1. In order to improve the efficiency of drilling down, lower floor's soil body hardness is great, the helical blade 21 of bottom is less with the area of contact of the soil body, and the helical blade 21 of bottom is by the range of slowing down for a short time, speed is faster than the helical blade 21 rotational speed of upper strata, the increase of moment of torsion is less, can be convenient for drill down, enlarge partly earlier with the soil layer, the bigger reaming is carried out through the bigger helical blade 21 of moment of torsion on upper strata again, with this reaming step by step, reach and improve drilling down efficiency promptly, can stir garrulous effect with the soil layer again.
In order to further improve the drilling efficiency, the outer edge of the helical blade 21 is provided with a plurality of roller cutters 22 which rotate autonomously during drilling. When helical blade 21 was rotatory, roller sword 22 can rotate with the soil layer friction is proper motion, and then makes the soil layer change by the stirring garrulous, improves and bores efficiency down to helical blade 21's friction damage can be reduced, helical blade 21's life is increased. In order to support the roller blade 22 to rotate on the spiral blade 21, a rotating shaft for mounting the roller blade may extend outward from the spiral blade 21.
Further, the roller blades 22 are arranged at intervals around the spiral track of the spiral blade 21; preferably, the central axis of the roller blade 22 is perpendicular to the central axis of the helical blade 21. In the present embodiment, the roller blade 22 is preferably a circular blade, and the outer surface of the roller blade 22 is always tangent to the outer side surface of the helical blade 21. When the drilling rod drills down, in the rotating process of the helical blade 21, the roller cutter 22 can rotate along the helical track at the edge of the helical blade 21 to stir soil blocks, so that the hole expanding effect is better, soil is stirred through the roller cutter 22 which preferentially rotates, and friction damage of the helical blade 21 is reduced.
Furthermore, after the helical blades 21 are used for enlarging and crushing the drilled hole, the soil at the conveying position of the helical blades 21 and the materials such as slurry or cement ash sprayed by the drill bit 12 need to be fully stirred, and a plurality of stirring blade groups which are arranged at intervals along the axial direction of the drill rod body 1 are arranged above the transmission part 11 of the drill rod body.
Because the length of the stirring blade group is generally longer, in order to avoid the situation that the stirring blade group is subjected to excessive resistance in the stirring process or is broken or bent due to collision with a soil layer which is not crushed by the helical blades 21 in the stirring process, it is preferable that the drilling radius of the helical blades 21 of the uppermost sub-rotating body 2 is greater than or equal to the maximum stirring radius of the stirring blade group, so that the stirring blade group can play a sufficient stirring role after each helical blade 21 is expanded.
Further, the stirring blade group comprises more than two stirring blades 4 distributed around the drill rod body 1 at intervals in the circumferential direction, and the length direction of the stirring blades 4 is perpendicular to the central axis of the drill rod body 1.
In the structure, the circumferential interval distribution of the more than two stirring blades 4 on the drill rod body 1 can avoid the condition that the resistance of the soil layer to the stirring blades 4 is uneven in the drilling process, so that the drill rod body 1 is inclined, and the drilled hole can not meet the use requirement.
Besides, preferably, the blade surface of the stirring blade 4 is inclined to the central axis of the drill rod body 1, and when viewed in a front view direction of the drill rod of the pile machine, at least part of the blade surface of the stirring blade 4 is inclined downward in a clockwise direction, or at least part of the blade surface of the stirring blade 4 is inclined downward in a counterclockwise direction. Wherein, stirring vane 4 can be the welding on the body of drill rod 1, perhaps outwards extend in the extension of the body of drill rod 1 side laminating mutually at stirring vane 4's tip, and rethread fastener is connected stirring vane 4 and body of drill rod 1 fixedly, and the fastener can be threaded fasteners such as bolt or screw.
In the above structure, because the stirring vane 4 extrudes the soil crushed by the helical vane 3 through the side surface of the stirring vane 4 in the rotating process, the soil is made to pass over the stirring vane 4 upwards or to drill through the stirring vane 4 downwards, so that the soil is further crushed, in order to obtain better stirring effect, the vane of the stirring vane 4 is inclined to the central axis of the drill rod body 1, and at least part of the vane surface of the stirring vane 4 is inclined downwards in a clockwise direction, or at least part of the vane surface of the stirring vane 4 is inclined downwards in an anticlockwise direction, through the above arrangement, when the stirring vane 4 rotates, the soil can move upwards or downwards for more distance when being extruded by the stirring vane, so that the stirring is more sufficient, besides, because the stirring vane 4 has a certain included angle with the horizontal direction, the stirring vane 4 can easily scoop up the soil on the same plane with the stirring vane, the stirring blade 4 is less resistant and the stirring blade 4 is not easy to break.
Furthermore, the roller cutters 22 are arranged on at least a part of the stirring blades 4, and the central axes of the roller cutters 22 are parallel to the central axis of the drill rod body 1. Through set up roller sword 22 on stirring vane 4 to this stirring effect who improves stirring vane 4, in this embodiment, roller sword 22 sets up the interlude at stirring vane 4 to roller sword 22's surface and stirring vane's blade surface are laminated mutually, owing to at stirring vane 4 in the rotation process, rub between roller sword 22 and the earth, and roller sword 22 can revolute the rotation of axes by oneself, therefore the stirring effect further improves. Of course, the roller blades 22 on the stirring vanes 4 may also be provided at the ends of the blade surfaces of the stirring vanes 5.
Since the roller blade 22 is disposed on the helical blade 21 and the roller blade 22 can rotate autonomously, the roller blade 22 will receive a large resistance during the drilling process, so the roller blade 22 and the rotation shaft of the helical blade 21 need to be thicker, the helical blade 21 has a thicker thickness, and such an arrangement will result in a poor soil spreading effect and a low drilling efficiency of the helical blade 21, and in order to improve the soil spreading effect and the drilling efficiency of the helical blade 21 and reduce the friction damage of the helical blade 21, the outer edge of the helical blade 21 is provided with a continuous or intermittent cutting edge (not shown) from the minimum radius to the maximum radius of the bottom of the helical blade 21. Of course, the roller blade 22 may also be provided with a continuous or interrupted cutting edge.
The utility model also discloses a stake machine of including above-mentioned stake machine drilling rod.
The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is defined by the scope defined by the claims, and a plurality of modifications and decorations made by those skilled in the art without departing from the spirit and scope of the present invention should also be regarded as the protection scope of the present invention.

Claims (10)

1. A drill rod of a pile machine is characterized by comprising a drill rod body (1) formed with a transmission part (11) and a drill bit (12) arranged at the lower end of the transmission part (11);
the transmission part (11) is sequentially sleeved with a plurality of sub-rotating bodies (2) in the axial direction, each sub-rotating body (2) is provided with more than one circle of spiral blades (21) extending along the axial direction of the drill rod body (1), a variable speed transmission mechanism (3) is arranged between each sub-rotating body (2) and the transmission part (11), and the rotating speed of the corresponding sub-rotating body (2) is changed through each variable speed transmission mechanism (3) so that differential rotation is formed between the sub-rotating bodies (2).
2. The pile machine drill rod according to claim 1, characterized in that the variable speed transmission mechanism (3) is a planetary gear set, the transmission ratio of each variable speed transmission mechanism (3) decreases in turn along the drill rod body (1) from top to bottom, and the rotation speed of each rotating body (2) increases in turn when the drill rod body (1) rotates.
3. The pile machine drill rod according to claim 2, characterized in that the speed change transmission mechanism (3) comprises a sun gear (31) which is arranged on the transmission part (11) and rotates synchronously with the transmission part (11), an inner gear ring (32) which is arranged at the recess of the inner wall of the rotating body (2), and a plurality of planet gears (33) which are engaged and assembled between the inner gear ring (32) and the sun gear (31);
wherein, the rotating shaft (331) of the planetary gear (33) is arranged at the concave position of the inner wall of the rotating body (2).
4. The drill rod of the pile machine as claimed in claim 1, characterized in that the radius of gyration of each helical blade (21) decreases in turn along the drill rod body (1) from top to bottom, and the outer edge of the helical blade (21) is provided with a plurality of roller cutters (22) which rotate autonomously during drilling down.
5. The piling machine drill rod of claim 4, characterized in that the roller cutters (22) are spaced around the helical track of the helical blade (21);
preferably, the central axis of the roller blade (22) is perpendicular to the central axis of the helical blade (21).
6. The pile machine drill rod according to claim 1, characterized in that the drill rod body (1) is provided with a plurality of stirring blade groups arranged at intervals along the axial direction of the drill rod body (1) above the transmission part (11);
preferably, the drilling radius of the spiral blade (21) of the uppermost rotating body (2) is more than or equal to the maximum stirring radius of the stirring blade group;
the transmission part (11) is a slender shaft section which is axially and integrally formed at the lower end of the drill rod body (1).
7. The pile machine drill rod according to claim 6, characterized in that the stirring blade group comprises more than two stirring blades (4) which are distributed at intervals along the circumference of the drill rod body (1), and the length direction of the stirring blades (4) is vertical to the central axis of the drill rod body (1);
preferably, the blade surface of the stirring blade (4) is inclined to the central axis of the drill rod body (1), and when viewed in the front view direction of the drill rod of the pile machine, at least part of the blade surface of the stirring blade (4) is inclined downwards in a clockwise direction, or at least part of the blade surface of the stirring blade (4) is inclined downwards in a counterclockwise direction.
8. The pile machine drill rod according to claim 7, characterized in that at least some of the stirring blades (4) are provided with roller cutters (22), the central axis of the roller cutters (22) being parallel to the central axis of the drill rod body (1).
9. The pile machine drill rod according to claim 1, characterized in that a dynamic sealing structure is arranged at the contact surface between the sub-rotators (2) and/or a dynamic sealing structure is arranged at the contact surface between the sub-rotator (2) and the drill rod body (1) close to the drill rod body (1).
10. A pile machine, characterized in that it comprises a pile machine drill rod according to any one of claims 1-9.
CN201920806149.7U 2019-05-31 2019-05-31 Pile machine drill rod and pile machine thereof Active CN210829122U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920806149.7U CN210829122U (en) 2019-05-31 2019-05-31 Pile machine drill rod and pile machine thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920806149.7U CN210829122U (en) 2019-05-31 2019-05-31 Pile machine drill rod and pile machine thereof

Publications (1)

Publication Number Publication Date
CN210829122U true CN210829122U (en) 2020-06-23

Family

ID=71253181

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920806149.7U Active CN210829122U (en) 2019-05-31 2019-05-31 Pile machine drill rod and pile machine thereof

Country Status (1)

Country Link
CN (1) CN210829122U (en)

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