CN217462005U

CN217462005U - Rotary drilling square pile drilling tool

Info

Publication number: CN217462005U
Application number: CN202121227311.3U
Authority: CN
Inventors: 廖必成; 岳大昌; 朱维新; 徐承忠
Original assignee: CHENGDU SIHAI GEOTECHNICAL ENGINEERING CO LTD
Current assignee: CHENGDU SIHAI GEOTECHNICAL ENGINEERING CO LTD
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2022-09-20
Anticipated expiration: 2031-06-02

Abstract

A rotary drilling square pile drilling tool relates to a pore-forming device in capital construction engineering. The novel toilet bowl comprises a center shaft assembly, a counterweight device, a bowl body and a toothed plate assembly, wherein the counterweight device and the bowl body are sleeved on the center shaft assembly, and the toothed plate assembly is arranged around the bowl body. The key technology is that a total pressure plate is sleeved between the upper square head of a central tube and a counterweight device, a spring is installed between the total pressure plate and a counterweight block, limiting plates are distributed on the lower end surface of the total pressure plate and the upper end surface of the counterweight block, a connecting rod is installed between the limiting plates, and sleeves are arranged at the lower ends of the side plates and the vertical plate; the pinion rack assembly comprises a pinion rack shaft, a pinion rack and drilling teeth, and the pinion rack shaft is located in the opening sleeve. The utility model has the advantages that: the lower end of the central tube is provided with a convex friction block, the bottom of the installation bucket is provided with a concave circular groove, and when the central tube rotates in the barrel body, the convex friction block at the lower end of the central tube rotates in the concave circular groove to bear the rotational friction of main pressure.

Description

Rotary drilling square pile drilling tool

The technical field is as follows:

a rotary drilling square pile drilling tool relates to a pore-forming device in capital construction engineering.

Background art:

for sections with high-risk steep side slopes, thick covering layers, large landslide thrust and poor side slope stability of roads, square anchor cable piles or anti-slide piles need to be arranged, or construction sites with building structures adopting square pile foundation forms often meet the requirements of square pile construction. Because above-mentioned operating mode all belongs to the great construction environment of risk, and compare in conventional cylindrical pile foundation, the square pile obviously has better atress performance. However, because the existing rotary drilling rig cannot realize rotary drilling forming of the square pile, the existing square pile construction mainly adopts the following two methods: for the prefabricated square pile with a smaller section, a pile driver is adopted to drive, press or vibrate the prefabricated square pile into the soil; for cast-in-place square piles with large sections, a construction form of manual hole digging is adopted, so that the consequences of low construction efficiency, high cost and high construction risk are caused.

The existing square pile drilling tool in the market adopts a rotary milling mode to drill after a hole is drilled at a pile position, the drilling speed is low, the milling torque is limited by a transmission mechanism and is only used in a stratum with the hardness of below 10MPa, the drilling tool is complex in structure, is not convenient to maintain and is not suitable for a water-containing square pile hole, and the construction risk is greatly increased when the drilling tool meets a stratum with higher hardness and still needs to adopt a manual excavation mode for construction.

The utility model has the following contents:

the to-be-solved problem of the utility model is exactly to above not enough and provide a square pile drilling tool that is suitable for the stratum extensively, can realize digging the drilling rig soon and draw the hole after disposable high-efficient pore-forming. The technical scheme is as follows:

a rotary drilling square pile drilling tool comprises a middle shaft assembly, a counterweight device, a barrel body and a toothed plate assembly, wherein the counterweight device and the barrel body are sleeved on the middle shaft assembly, and the toothed plate assembly is arranged around the barrel body; the axis assembly includes square head and center tube, and the square head is located the center tube upper end, and the counter weight device includes balancing weight and last slider mounting panel, and the ladle body includes panel, curb plate and riser. The key technology is that a total pressure plate is sleeved between the upper head of a central tube and a counterweight device, a spring is installed between the total pressure plate and a counterweight block, limiting plates are distributed on the lower end surface of the total pressure plate and the upper end surface of the counterweight block, a connecting rod is installed between the limiting plates, the lower end surface of the counterweight block is provided with an upper supporting plate, the lower end surface of the upper supporting plate is provided with an upper sliding block group, a side plate and a vertical plate are installed below a panel of a barrel body to form a box body, lower supporting plates are distributed on the upper end surface of the panel, the upper end surface of the lower supporting plate is provided with a lower sliding block group, the middle part of the panel is provided with a guide cylinder and an installation hopper, and the lower ends of the side plate and the vertical plate are provided with sleeves; the toothed plate assembly comprises a toothed plate shaft, a toothed plate and drilling teeth, the toothed plate shaft is located in the opening sleeve, the toothed plate shaft is provided with the toothed plate, and the drilling teeth are uniformly distributed on the toothed plate.

The square head is reinforced by a square head connecting plate, and square head rib plates are arranged in the diagonal directions of the square head.

The lower end of the central tube is inserted into the guide cylinder of the barrel body, the outer wall of the central tube is positioned at the lower end of the guide cylinder and sleeved with the limiting ring, and the limiting ring is matched and fixed with the lower end of the central tube.

The lower end of the central tube is provided with a convex friction block, and the bottom of the mounting bucket is provided with a concave circular groove.

And an oil groove is formed in the bottom of the mounting hopper.

The upper end of the spring is provided with a spring pressure plate, and the total pressure plate is provided with a pressurizing screw rod.

The middle part of the central pipe is sleeved with an abrasion-resistant plate mounting disc, and an abrasion-resistant plate is mounted below the abrasion-resistant plate mounting disc.

And the surface of the toothed plate is provided with a limiting strip.

And a corner toothed plate is arranged on the side plate and the lower end of the vertical plate in the diagonal direction.

Longitudinal rib plates and transverse rib plates are distributed in the barrel body.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the side plates and the vertical plates are arranged below the panel of the barrel body to form an open square box body, the formed rotary drilling square pile drilling tool is wide in applicable stratum, and the purpose of forming a disposable efficient square hole after a hole is led by the rotary drilling machine can be achieved.

2. The arrangement of the connecting rod and the limiting plate enables the counterweight device to transmit torque through the connecting rod and the limiting plate.

3. The upper sliding block group is matched with the lower sliding block group to convert the rotary motion into continuous up-and-down motion of the stroke of the balancing weight, so that the hammering impact of the appliance is realized.

4. The lower end of the central tube is provided with a convex friction block, the bottom of the installation bucket is provided with a concave circular groove, and when the central tube rotates in the barrel body, the convex friction block at the lower end of the central tube rotates in the concave circular groove to bear the rotational friction of main pressure.

5. The bottom of installation fill is equipped with the oil groove, and protruding circle clutch blocks and concave circular groove are by the lubricating oil submergence in the oil groove, play the effect for protruding circle clutch blocks and concave circular groove cooling.

6. The utility model discloses a spacing ring and fixed pin are connected, and the separation can easily be dismantled with the axis assembly to the ladle body, is convenient for maintain the maintenance.

7. The adoption of opening sleeve pipe makes the pinion rack assembly can deflect certain angle in the sleeve pipe, realizes creeping into the expansion, carries to bore and retrieves, takes place the jamming when avoiding the drilling tool to carry to ladle body four corners sets up the horn pinion rack, can guide the drilling tool to bore, and it is higher to improve the whole efficiency of construction of drilling tool and pore-forming pore wall quality.

8. The utility model discloses transmission parts is few, and it is low to digging rig power loss soon, use low cost, pure mechanical type structure, operation under the adaptable adverse conditions to can match the impact force that various stratums are suitable for according to the nimble adjustment spring pressure of different geological conditions in scene, improve the efficiency of construction.

Description of the drawings:

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the assembled three-dimensional structure of the middle shaft assembly and the counterweight device of the present invention;

fig. 3 is a schematic structural view of the counterweight device of the present invention;

fig. 4 is a schematic structural view of the lower slider group of the present invention;

fig. 5 is a schematic view of a partial connection structure of the middle shaft assembly and the barrel body of the present invention;

fig. 6 is a schematic structural view of the tooth plate assembly of the present invention;

fig. 7 is a schematic view of the assembly structure of the bucket body and the toothed plate assembly of the present invention.

The specific implementation mode is as follows:

referring to fig. 1 to 7, the rotary drilling square pile drilling tool comprises a center shaft assembly 1, a counterweight device 2, a barrel body 3 and a toothed plate assembly 4, wherein the counterweight device 2 and the barrel body 3 are sleeved on the center shaft assembly 1, and the toothed plate assembly 4 is arranged around the barrel body 3; the middle shaft assembly 1 comprises a square head 11 and a central tube 14, the square head 11 is located at the upper end of the central tube 14, the counterweight device 2 comprises a counterweight block 21 and an upper sliding block mounting plate 25, and the barrel body 3 comprises a panel 31, a side plate 32 and a vertical plate 33. The key technology is that a total pressure plate 16 is sleeved and welded between an upper head 11 of a central tube 14 and a counterweight device 2, a spring 24 is installed between the total pressure plate 16 and a counterweight 21 through a spring installation hole, a plurality of limiting plates 27 are respectively and uniformly distributed on the lower end face of the total pressure plate 16 and the upper end face of the counterweight 21, a connecting rod 271 is installed between the lower end face of the total pressure plate 16 and the limiting plate 27 on the upper end face of the counterweight 21, the counterweight device 2 transmits torque through the connecting rod 271 and the limiting plates 27, an upper supporting plate 22 is uniformly arranged on the lower end face of the counterweight 21, an upper triangular sliding block group 26 is arranged on the lower end face of the upper supporting plate 22 through an upper sliding block installation plate 25, a side plate 32 and a vertical plate 33 are installed below a panel 31 of a bucket body 3 to form an open square box body, lower supporting plates 311 are uniformly distributed on the upper end face of the panel 31, a lower triangular sliding block group 313 is arranged on the upper end face of the lower supporting plate 311 through a lower sliding block installation plate 312, the upper triangular sliding block group 26 is matched with the lower triangular sliding block group 313 to convert rotary motion into continuous counterweight 21 stroke of 30mm The upper and lower movement realizes the hammering impact of the appliance, the middle part of the panel 31 is provided with a guide cylinder 36 and an installation bucket 314, the guide cylinder 36 is positioned in the installation bucket 314, and the lower ends of the side plate 32 and the vertical plate 33 are respectively provided with an opening sleeve 37; toothed plate assembly 4 includes toothed plate shaft 41, toothed plate 42 and drilling tooth 43, and toothed plate shaft 41 is located open sleeve 37, installs toothed plate 42 on toothed plate shaft 41, and the drilling tooth 43 is evenly distributed on toothed plate 42.

The square head 11 is reinforced through a square head connecting plate 13, a square head rib plate 12 is arranged on the square head 11 in the diagonal direction, and the upper portion of a main pressing plate 16 is connected with the square head rib plate 12 in a welding mode.

The lower end of the central tube 14 is inserted into the guide cylinder 36 of the barrel body 3, the outer wall of the central tube 14 is positioned at the lower end of the guide cylinder 36, and the lower end of the guide cylinder 36 is sleeved with the limiting ring 19, the limiting ring 19 is matched and fixed with the pin hole at the lower end of the central tube 14 through the fixing pin 18, so that the middle shaft assembly 1 is limited, and the middle shaft assembly and the barrel body are connected in a combined manner.

The lower end of the central tube 14 is provided with a convex friction block 315, the bottom of the mounting bucket 314 is provided with a concave circular groove 316, and when the central tube 14 rotates in the barrel body 3, the convex friction block 315 at the lower end of the central tube rotates in the concave circular groove 316 to bear the rotational friction of main pressure.

The bottom of the mounting bucket 314 is provided with an oil groove 317, and the convex friction block 315 and the concave groove 316 are immersed by lubricating oil in the oil groove 317 to play a role in cooling the convex friction block 315 and the concave groove 316.

A spring pressing plate 23 is arranged at the upper end of the spring 24, a pressurizing screw rod 15 is uniformly arranged on the total pressing plate 16, and the compression amount of the spring 24 can be increased by screwing the pressurizing screw rod 15.

The middle part of the central tube 14 is positioned between the counterweight device 2 and the barrel body 3, the wear-resistant plate mounting disc 17 is sleeved and welded, the wear-resistant plate 38 is mounted below the wear-resistant plate mounting disc 17, and the wear-resistant plate 38 is in contact with the barrel body to assist in sharing the action of rotational friction force.

The surface of the toothed plate 42 is provided with a limit strip 44 for bearing the deflection moment of the toothed plate 42 in the drilling process, so that the hole forming quality is ensured.

And the corner toothed plates 39 are arranged on the lower ends of the side plates 32 and the vertical plates 33 in the diagonal direction, and the corner toothed plates 39 are higher than the drilling teeth 43, so that the guide drilling can be realized, and the drilling resistance of four corners of the square pile is reduced.

And longitudinal rib plates 34 and transverse rib plates 35 are distributed in the barrel body 3 for enhancing the integral strength of the barrel body.

A rotary drilling square pile drilling tool is characterized in that when holes are formed, a conventional drilling tool is firstly used for guiding the holes at a designed position for containing slag, and then the rotary drilling square pile drilling tool is replaced; after the rotary-digging square pile drilling tool is adjusted and centered, slowly drilling downwards to enable the angle tooth plate 39 to be embedded into the soil body preferentially, continuously pressurizing to enable the drilling tool drilling tooth 43 to be contacted with the soil body, then clockwise rotating the drilling tool square head 11, driving the limiting plate 27 welded below the total pressure plate 16 to rotate by the square head 11, driving the counterweight device 2 to rotate under the action of the connecting rod 271, enabling the upper triangular slide block group 26 arranged at the lower end of the counterweight device 2 and the lower triangular slide block group 313 arranged at the upper end of the barrel body 3 to slide relatively, converting the rotating motion into continuous up-and-down motion with 30mm stroke of the counterweight block 21, compressing and storing energy for the spring 24 in the upward process of the counterweight block 21, then sliding to the tail end of the upper triangular slide block group, enabling the counterweight block 21 to fall down at an instant speed, enabling the counterweight device 2 to hit the barrel body 3 to generate downward impact force, and enabling the drilling tool to continuously rotate to generate continuous impact force; under the impact action, the barrel body 3 drives the toothed plate assembly 4 to forcibly drill downwards, and the corner toothed plates 39 arranged at four corners of the barrel body 3 are matched to guide a drilling tool to drill, so that rapid hole forming is realized. During the drilling process, the drilling tool feed rate is observed, and the pressurizing screw 15 is adjusted on site to adjust the pressurizing force of the spring 24 according to the feed rate. Need put forward after drilling certain degree of depth and dig the square pile drilling tool soon, change and clear the downthehole sediment that holds of end drilling tool clearance, when carrying the brill, because toothed plate shaft 41 can be certain angle of deflection in opening sleeve 37, realize inwards deflecting, avoid the drilling tool to carry and take place pinion rack assembly 4 scraping pore wall when boring and cause the jamming, improve the efficiency of construction and just less to pore-forming pore wall quality influence. And after hole cleaning is finished, continuously changing the rotary drilling square pile drilling tool to operate until the hole is finished.

The above-mentioned embodiments are described for the preferred embodiments of the present invention, but not for limiting the scope of the present invention, and all the modifications and improvements made by the technical solutions of the present invention by the ordinary engineers in the art should fall into the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.

Claims

1. A rotary drilling square pile drilling tool comprises a middle shaft assembly (1), a counterweight device (2), a barrel body (3) and a toothed plate assembly (4), wherein the counterweight device (2) and the barrel body (3) are sleeved on the middle shaft assembly (1), and the toothed plate assembly (4) is arranged around the barrel body (3); the middle shaft assembly (1) comprises a square head (11) and a central tube (14), the square head (11) is positioned at the upper end of the central tube (14), the counterweight device (2) comprises a counterweight block (21) and an upper slider mounting plate (25), the barrel body (3) comprises a panel (31), a side plate (32) and a vertical plate (33), the middle shaft assembly is characterized in that a total pressure plate (16) is sleeved between the upper square head (11) of the central tube (14) and the counterweight device (2), a spring (24) is installed between the total pressure plate (16) and the counterweight block (21), limiting plates (27) are distributed on the lower end surface of the total pressure plate (16) and the upper end surface of the counterweight block (21), a connecting rod (271) is installed between the limiting plates (27), an upper supporting plate (22) is arranged on the lower end surface of the counterweight block (21), an upper slider group (26) is arranged on the lower end surface of the upper supporting plate (22), the side plate (32) and the vertical plate (33) are installed below the panel (31) of the barrel body (3) to form a box body, a lower support plate (311) is distributed on the upper end surface of the panel (31), a lower sliding block set (313) is arranged on the upper end surface of the lower support plate (311), a guide cylinder (36) and an installation bucket (314) are arranged in the middle of the panel (31), and sleeves (37) are arranged at the lower ends of the side plates (32) and the vertical plates (33); pinion rack assembly (4) are including pinion rack axle (41), pinion rack (42) and are crept into tooth (43), and pinion rack axle (41) are located sleeve pipe (37), and installation pinion rack (42) on pinion rack axle (41), and the equipartition has into tooth (43) on pinion rack (42).

2. The rotary square pile drilling tool according to claim 1, wherein the square head (11) is reinforced by a square head connecting plate (13), and a square head rib plate (12) is arranged on the square head (11) in the diagonal direction.

3. The rotary square pile drilling tool according to claim 1, wherein the lower end of the central tube (14) is inserted into a guide cylinder (36) of the barrel body (3), a limiting ring (19) is sleeved on the outer wall of the central tube (14) and located at the lower end of the guide cylinder (36), and the limiting ring (19) is matched and fixed with the lower end of the central tube (14).

4. The rotary square pile drilling tool as claimed in claim 1, wherein a convex friction block (315) is mounted at the lower end of the central pipe (14), and a concave circular groove (316) is formed at the bottom of the mounting bucket (314).

5. A rotary square pile drilling tool according to claim 3, characterized in that the bottom of the mounting bucket (314) is provided with an oil groove (317).

6. The rotary square pile drilling tool as claimed in claim 1, wherein a spring pressure plate (23) is mounted at the upper end of the spring (24), and a pressurizing screw (15) is mounted on the total pressure plate (16).

7. The rotary square pile drilling tool as claimed in claim 1, wherein a wear-resistant plate mounting disc (17) is sleeved in the middle of the central tube (14), and a wear-resistant plate (38) is mounted below the wear-resistant plate mounting disc (17).

8. The rotary square pile drilling tool according to claim 1, wherein a limiting strip (44) is arranged on the surface of the toothed plate (42).

9. The rotary square pile drilling tool according to claim 1, wherein a corner toothed plate (39) is arranged on the lower end of the side plate (32) and the lower end of the vertical plate (33) in the diagonal direction.

10. The rotary drilling square pile drilling tool according to claim 1, characterized in that longitudinal rib plates (34) and transverse rib plates (35) are distributed in the barrel body (3).