Energy-saving efficient piling drill bit

Abstract

The invention relates to the technical field of piling drill bits, in particular to an energy-saving efficient piling drill bit which comprises a lower drill bit rod, a guniting opening is formed in the side face of the lower drill bit rod, an upper drill bit rod is fixedly connected to the top end of the lower drill bit rod, and piling mechanisms facilitating efficient drilling are arranged on the side face of the lower drill bit rod and the side face of the upper drill bit rod. And the outer end of the piling mechanism is provided with a side grinding mechanism facilitating rotary grinding of the pile hole wall to increase lines, the four sets of mounting bases are fixedly connected to the side wall of the lower drill bit rod and the side wall of the upper drill bit rod correspondingly, and the lower piling arm is fixedly connected to the mounting bases. According to the energy-saving and efficient piling drill bit, the lower piling arm and the upper piling arm are fixedly connected to the mounting bases fixedly connected to the side walls of the lower drill bit rod and the upper drill bit rod correspondingly, and the lower piling arm and the upper piling arm are each provided with a drill tooth base and a drill tooth body; and the tooth directions of the drilling tooth main bodies on the lower piling arm and the upper piling arm are opposite, so that large soil bodies can be broken while drilling is carried out.

Description

Technical Field

[0001] This invention relates to the field of piling drill bit technology, specifically to an energy-saving and high-efficiency piling drill bit. Background Technology

[0002] Piling drill bits are key tools in piling machinery used to penetrate soil or rock. They drill holes by rotation or impact to provide a channel for subsequent pile foundation construction.

[0003] Existing technologies lack the structure for bidirectional soil breaking and the cone-shaped pit on the pile sidewall to improve bearing capacity. As a result, most existing pile driving drills only break the soil at the bottom and use grout to flush out the soil and debris from the pile hole. Although this achieves good pile driving results, if large chunks of soil are generated from the bottom breaking and move above the drill bit, they can easily obstruct the pile hole, affecting the discharge of soil and grout, and thus impacting drilling efficiency. In addition, the existing pile hole walls are mostly flat, which can provide effective support and friction for the pile, but cannot increase friction and reduce cement consumption under the same bearing capacity conditions. Based on the shortcomings of existing technologies, this invention designs an energy-saving and high-efficiency pile driving drill. Summary of the Invention

[0004] This invention provides an energy-saving and efficient pile driving drill bit, which has the advantages of bidirectional soil breaking and pile sidewall conical pit to improve bearing capacity.

[0005] The present invention provides the following technical solution: an energy-saving and efficient piling drill bit, including a lower drill bit rod, a grouting port is provided on the side of the lower drill bit rod, an upper drill bit rod is fixedly connected to the top of the lower drill bit rod, a piling mechanism is provided on the sides of the lower drill bit rod and the upper drill bit rod to facilitate efficient drilling, and a side grinding mechanism is provided at the outer end of the piling mechanism to facilitate grinding the pile hole wall to increase texture. The piling mechanism includes a mounting base, a lower piling arm, a drill bit seat, a drill bit body, an upper piling arm, and a reinforcing plate. The four sets of mounting bases are respectively fixedly connected to the side walls of the lower drill bit rod and the upper drill bit rod. The lower piling arm is fixedly connected to the mounting base. The drill bit seat is fixedly connected to the lower piling arm. The drill bit body is fixedly mounted on the drill bit seat. The upper piling arm is fixedly connected to the mounting base. The reinforcing plate is fixedly connected between the mounting base, the lower piling arm, and the upper piling arm.

[0006] As a preferred embodiment of the present invention, the side grinding mechanism includes a sleeve, a rotary joint, a connecting roller, a lower toothed roller, an upper toothed roller, a slot, a connecting bolt, lower grinding teeth, a mounting screw hole, a screw opening, and a screw. The sleeve is disposed at the outer end of the mounting base, the rotary joint is fixedly disposed at the outer end of the sleeve, the connecting roller is inserted through and onto the rotary joint, the lower toothed roller is fixedly connected to the bottom end of the connecting roller, the upper toothed roller is rotatably sleeved on the connecting roller, the slot is opened through and onto the upper toothed roller, the connecting bolt is threadedly inserted into the connecting roller, the lower grinding teeth are fixedly connected to the bottom of the lower toothed roller, the mounting screw hole is opened on one side of the mounting base and the upper piling arm, the screw opening is opened through and onto the mounting base, and the screw is threadedly inserted into the mounting screw hole.

[0007] As a preferred embodiment of the present invention, a connector is fixedly connected to the top end of the upper drill rod, and a bottom cone is fixedly connected to the bottom end of the lower drill rod.

[0008] As a preferred embodiment of the present invention, the lower drill bit rod and the upper drill bit rod are provided with grout delivery pipes inside.

[0009] As a preferred embodiment of the present invention, the lower pile-driving arm is fixedly connected to two sets of mounting seats on the lower drill bit rod, and the upper pile-driving arm is fixedly connected to two sets of mounting seats on the upper drill bit rod.

[0010] As a preferred embodiment of the present invention, both the lower piling arm and the upper piling arm are provided with drill bit seats and drill bit bodies. The drill bit seats and drill bit bodies provided on the lower piling arm are arranged downwards, and the drill bit seats and drill bit bodies provided on the upper piling arm are arranged upwards.

[0011] As a preferred embodiment of the present invention, the lower toothed roller and the upper toothed roller are rotatably disposed on the upper and lower sides of the rotary joint, respectively, and the connecting bolt is positioned on the upper surface of the upper toothed roller.

[0012] As a preferred embodiment of the present invention, the screw is threaded through the screw opening and fixedly inserted into the mounting screw hole, and the screw is limited and inserted into the sleeve.

[0013] As a preferred embodiment of the present invention, the plug-in connection is provided at the outer ends of the lower pile driving arm and the upper pile driving arm.

[0014] As a preferred embodiment of the present invention, the inner cavity of the grout delivery pipe is connected to the grout injection port, and the grout delivery pipe is also provided on the connector.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This energy-saving and high-efficiency piling drill bit connects the lower and upper drill rods to an external drilling rig via a connector. The bottom cone is then placed at the center of a pre-set piling hole and rotated to initiate piling operations. During piling, the rotating lower piling arm, drill bit seat, and drill bit body perform the drilling operation. Simultaneously, the grout delivery pipe and grout nozzle spray grout, carrying soil debris, which flows out from the top of the pile hole. As the soil debris rises, larger pieces of soil come into contact with the upper piling arm positioned above the lower piling arm. The drill bit seat and drill bit body on the upper piling arm can quickly break up large pieces of soil, reducing large soil that cannot be discharged with the grout to smaller pieces, thus increasing the grout flow rate and improving the piling efficiency of the lower piling arm and drill bit seat. This device facilitates efficient piling and the breaking up of large soil blocks.

[0016] 2. This energy-saving and high-efficiency piling drill bit is fixed by inserting the mounting bases one by one into the lower and upper piling arms, then fixing the insert sleeves by inserting screws into the screw holes and mounting bolts, then inserting the connecting roller into the rotary joint and fitting the upper toothed roller onto the connecting roller, and using connecting bolts for limiting. During the piling operation of the rotary joint, connecting roller, lower toothed roller and upper toothed roller, the lower toothed roller and upper toothed roller come into contact with the inner wall of the pile hole as the rotary joint and upper toothed roller rotate. The conical teeth set on the side walls of the lower toothed roller and upper toothed roller will engage with the inner wall of the pile hole, making the pile side wall conical in shape. This device facilitates the increase of pile bearing capacity. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the drill bit structure from below according to the present invention; Figure 3 This is a schematic cross-sectional view of the piling drill bit rod of the present invention; Figure 4 This is a schematic diagram of the piling mechanism and drill bit rod of the present invention. Figure 5 This is a schematic diagram of the unfolded structure of the piling arm and side grinding mechanism of the present invention; Figure 6 This is an exploded structural diagram of the main body of the side grinding mechanism of the present invention.

[0018] In the diagram: 1. Lower drill bit rod; 101. Upper drill bit rod; 102. Connector; 103. Bottom cone; 2. Grouting nozzle; 201. Grouting pipe; 3. Pile driving mechanism; 301. Mounting base; 302. Lower pile driving arm; 303. Drill tooth seat; 304. Drill tooth body; 305. Upper pile driving arm; 306. Reinforcing plate; 4. Side grinding mechanism; 401. Sleeve; 402. Rotary joint; 403. Connecting roller; 404. Lower toothed roller; 405. Upper toothed roller; 406. Slot; 407. Connecting bolt; 408. Lower grinding tooth; 409. Mounting screw hole; 410. Threaded opening; 411. Screw. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1 - Figure 6 An energy-saving and efficient piling drill bit includes a lower drill bit rod 1, a grouting port 2 on the side of the lower drill bit rod 1, an upper drill bit rod 101 fixedly connected to the top of the lower drill bit rod 1, a piling mechanism 3 for efficient drilling is provided on the sides of the lower drill bit rod 1 and the upper drill bit rod 101, and a side grinding mechanism 4 for increasing the texture of the pile hole wall is provided at the outer end of the piling mechanism 3, a connector 102 is fixedly connected to the top of the upper drill bit rod 101, and a bottom cone 103 is fixedly connected to the bottom of the lower drill bit rod 1.

[0021] Please see Figure 3 The lower drill rod 1 and the upper drill rod 101 are provided with a grout delivery pipe 201. The inner cavity of the grout delivery pipe 201 is connected to the grout injection port 2. The grout delivery pipe 201 is also provided on the connector 102.

[0022] Please see Figure 4 - Figure 5The piling mechanism 3 includes a mounting base 301, a lower piling arm 302, a drill bit seat 303, a drill bit body 304, an upper piling arm 305, and a reinforcing plate 306. Four sets of mounting bases 301 are respectively fixedly connected to the side walls of the lower drill bit rod 1 and the upper drill bit rod 101. The lower piling arm 302 is fixedly connected to the mounting base 301. The drill bit seat 303 is fixedly connected to the lower piling arm 302. The drill bit body 304 is fixedly mounted on the drill bit seat 303. The upper piling arm 305 is fixedly connected to the mounting base 301. The reinforcing plate 306 is fixedly connected to the mounting base 301. Between the lower pile arm 302 and the upper pile arm 305, the lower pile arm 302 is fixedly connected to two sets of mounting seats 301 set on the lower drill bit rod 1, and the upper pile arm 305 is fixedly connected to two sets of mounting seats 301 set on the upper drill bit rod 101. Both the lower pile arm 302 and the upper pile arm 305 are provided with drill tooth seats 303 and drill tooth bodies 304. The drill tooth seats 303 and drill tooth bodies 304 on the lower pile arm 302 are set downwards, and the drill tooth seats 303 and drill tooth bodies 304 on the upper pile arm 305 are set upwards.

[0023] By setting up a lower pile driving arm 302, a drill bit seat 303, and a drill bit body 304, the contact surface is increased to achieve thorough mixing and break up large soil blocks. By setting up an upper pile driving arm 305, with a drill bit seat 303 and a drill bit body 304 facing upwards, the contact surface is increased to achieve thorough mixing and assist in breaking up large soil blocks. By setting up a reinforcing plate 306, the strength of the lower pile driving arm 302 and the upper pile driving arm 305 during use is enhanced. By setting the length of the upper lower pile driving arm 302 to be greater than the length of the lower lower pile driving arm 302, and the length of the upper upper pile driving arm 305 to be greater than the length of the upper lower pile driving arm 302, secondary widening is used to reduce soil disturbance and improve the condition of the pile sidewall.

[0024] Please see Figure 5 - Figure 6The side grinding mechanism 4 includes a sleeve 401, a rotary joint 402, a connecting roller 403, a lower toothed roller 404, an upper toothed roller 405, a slot 406, a connecting bolt 407, lower grinding teeth 408, a mounting screw hole 409, a screw thread 410, and a screw 411. The sleeve 401 is disposed at the outer end of the mounting base 301, the rotary joint 402 is fixedly disposed at the outer end of the sleeve 401, the connecting roller 403 is inserted through the rotary joint 402, the lower toothed roller 404 is fixedly connected to the bottom end of the connecting roller 403, the upper toothed roller 405 is rotatably sleeved on the connecting roller 403, the slot 406 is opened through the upper toothed roller 405, and the connecting bolt 407 is threaded into the connecting roller 403. The lower grinding tooth 408 is fixedly connected to the bottom of the lower tooth roller 404. The mounting screw hole 409 is opened on one side of the mounting base 301 and the upper piling arm 305. The screw opening 410 is opened through the mounting base 301. The screw 411 is threaded into the mounting screw hole 409. The lower tooth roller 404 and the upper tooth roller 405 are respectively rotatably set on the upper and lower sides of the rotary joint 402. The connecting bolt 407 is limited and set on the upper surface of the upper tooth roller 405. The screw 411 is threaded through the screw opening 410 and fixedly inserted into the mounting screw hole 409. The screw 411 is limited and inserted into the sleeve 401. The sleeve 401 is inserted into the outer end of the lower piling arm 302 and the upper piling arm 305.

[0025] By setting up connecting roller 403, lower toothed roller 404 and upper toothed roller 405, it is possible to roll on the side wall of the pile, so that the side wall of the pile forms a cone-shaped pit, which increases the pile friction and thus increases the bearing capacity. At the same time, the amount of cement can be reduced under the same bearing capacity conditions. By setting up connecting bolt 407 and rotary joint 402, it is possible to replace the lower toothed roller 404 or the upper toothed roller 405. By setting up insert 401, mounting screw hole 409, screw 410 and screw 411, it is possible to disassemble and assemble the lower toothed roller 404 and the upper toothed roller 405.

[0026] Working principle: When an energy-efficient piling drill bit is used, in the initial state, the upper drill rod 101, connector 102, and bottom cone 103 are respectively installed at the top and bottom of the lower drill rod 1. A grouting pipe 201 is installed inside the lower drill rod 1, upper drill rod 101, and connector 102, and the bottom end of the grouting pipe 201 communicates with a grouting nozzle 2 on the side wall of the lower drill rod 1 to facilitate grout injection into the pile hole and discharge of drilling debris. A lower piling arm 302 and an upper piling arm 305 are respectively fixedly connected to the mounting base 301 fixedly connected to the side walls of the lower and upper drill rods 101. Both the lower pile arm 302 and the upper pile arm 305 are equipped with drill tooth seats 303 and drill tooth bodies 304. The teeth of the drill tooth bodies 304 on the lower pile arm 302 and the upper pile arm 305 are arranged in opposite directions to facilitate drilling while breaking large pieces of soil. At the same time, a connecting roller 403, a lower tooth roller 404 and an upper tooth roller 405 are installed on the rotary joint 402 connected to the outer end of the lower pile arm 302 and the upper pile arm 305 by a sleeve 401 and a screw 411. The bottom end of the lower tooth roller 404 is provided with a lower grinding tooth 408 to form a cone-shaped pit on the side wall of the pile. When efficient piling and breaking large sections of soil are required, the lower drill bit rod 1 and the upper drill bit rod 101 are first connected to the external drilling rig using the connector 102. Then, the bottom cone head 103 is placed at the center of the preset piling hole and rotated to start the piling operation. During the piling process, the rotating lower piling arm 302, drill tooth seat 303, and drill tooth body 304 perform rotating drilling operations. At the same time, the grout delivery pipe 201 and the grout nozzle 2 spray out grout, carrying soil debris, which flows out from the top of the pile hole. During the upward flow of soil and debris, larger pieces of soil will come into contact with the upper pile driving arm 305 located above the lower pile driving arm 302. The drill bit seat 303 and drill bit body 304 located on the upper pile driving arm 305 can quickly break up large pieces of soil, breaking them down into smaller pieces so that they cannot be discharged with the grout. This increases the flow rate of the grout and improves the pile driving efficiency of the lower pile driving arm 302 and the drill bit seat 303. This device facilitates efficient pile driving and breaks up large pieces of soil.

[0027] When it is necessary to increase the bearing capacity of the pile, firstly, the mounting bases 301 are inserted one by one into the lower pile driving arm 302 and the upper pile driving arm 305. Then, the insert sleeve 401 is fixed by inserting screws 411 into the screw holes 410 and 409. Then, the connecting roller 403 is inserted into the rotary joint 402 and the upper toothed roller 405 is put on the connecting roller 403. The fixing is completed by using the connecting bolt 407 for limiting. During the pile driving operation of the rotary joint 402, connecting roller 403, lower toothed roller 404 and upper toothed roller 405, the lower toothed roller 404 and upper toothed roller 405 come into contact with the inner wall of the pile hole as the rotary joint 402 and upper toothed roller 405 rotate. The conical teeth set on the side walls of the lower toothed roller 404 and upper toothed roller 405 will be inserted into the inner wall of the pile hole, so that the side wall of the pile is in the shape of a cone pit. This device is convenient for increasing the bearing capacity of the pile.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving and high-efficiency piling drill bit, comprising a lower drill bit rod (1), characterized in that: The lower drill bit rod (1) has a grouting port (2) on its side. The upper drill bit rod (101) is fixedly connected to the top of the lower drill bit rod (1). The lower drill bit rod (1) and the upper drill bit rod (101) are provided with a piling mechanism (3) to facilitate efficient drilling. The outer end of the piling mechanism (3) is provided with a side grinding mechanism (4) to facilitate grinding the pile hole wall to increase texture. The piling mechanism (3) includes a mounting base (301), a lower piling arm (302), a drill bit seat (303), a drill bit body (304), an upper piling arm (305), and a reinforcing plate (306). The four sets of mounting bases (301) are respectively fixedly connected to the side walls of the lower drill bit rod (1) and the upper drill bit rod (101). The lower piling arm (302) is fixedly connected to the mounting base (301). The drill bit seat (303) is fixedly connected to the lower piling arm (302). The drill bit body (304) is fixedly installed on the drill bit seat (303). The upper piling arm (305) is fixedly connected to the mounting base (301). The reinforcing plate (306) is fixedly connected between the mounting base (301), the lower piling arm (302), and the upper piling arm (305).

2. The energy-saving and high-efficiency piling drill bit according to claim 1, characterized in that: The side grinding mechanism (4) includes a sleeve (401), a rotary joint (402), a connecting roller (403), a lower toothed roller (404), an upper toothed roller (405), a slot (406), a connecting bolt (407), lower grinding teeth (408), a mounting screw hole (409), a screw opening (410), and a screw (411). The sleeve (401) is disposed at the outer end of the mounting base (301), the rotary joint (402) is fixedly disposed at the outer end of the sleeve (401), the connecting roller (403) is inserted through the rotary joint (402), and the lower toothed roller (404) is fixedly connected to the mounting base (301). At the bottom end of the connecting roller (403), the upper toothed roller (405) is rotatably sleeved on the connecting roller (403), the slot (406) is opened through the upper toothed roller (405), the connecting bolt (407) is threaded into the connecting roller (403), the lower grinding tooth (408) is fixedly connected to the bottom of the lower toothed roller (404), the mounting screw hole (409) is opened on one side of the mounting base (301) and the upper piling arm (305), the screw opening (410) is opened through the mounting base (301), and the screw (411) is threaded into the mounting screw hole (409).

3. The energy-saving and high-efficiency piling drill bit according to claim 1, characterized in that: The top end of the upper drill rod (101) is fixedly connected to a connector (102), and the bottom end of the lower drill rod (1) is fixedly connected to a bottom cone (103).

4. The energy-saving and high-efficiency piling drill bit according to claim 1, characterized in that: The lower drill rod (1) and the upper drill rod (101) are provided with grout delivery pipes (201).

5. The energy-saving and high-efficiency piling drill bit according to claim 1, characterized in that: The lower pile arm (302) is fixedly connected to two sets of mounting seats (301) on the lower drill bit rod (1), and the upper pile arm (305) is fixedly connected to two sets of mounting seats (301) on the upper drill bit rod (101).

6. The energy-saving and high-efficiency piling drill bit according to claim 1, characterized in that: Both the lower pile driving arm (302) and the upper pile driving arm (305) are equipped with drill bit seats (303) and drill bit bodies (304). The drill bit seats (303) and drill bit bodies (304) on the lower pile driving arm (302) are arranged downwards, while the drill bit seats (303) and drill bit bodies (304) on the upper pile driving arm (305) are arranged upwards.

7. The energy-saving and high-efficiency piling drill bit according to claim 2, characterized in that: The lower toothed roller (404) and the upper toothed roller (405) are respectively rotatably disposed on the upper and lower sides of the rotary joint (402), and the connecting bolt (407) is limited to the upper surface of the upper toothed roller (405).

8. The energy-saving and high-efficiency piling drill bit according to claim 2, characterized in that: The screw (411) is threaded through the screw opening (410) and fixedly inserted into the mounting screw hole (409). The screw (411) is limited and inserted into the sleeve (401).

9. The energy-saving and high-efficiency piling drill bit according to claim 2, characterized in that: The insert (401) is inserted into the outer ends of the lower pile arm (302) and the upper pile arm (305).

10. The energy-saving and high-efficiency piling drill bit according to claim 4, characterized in that: The inner cavity of the grout delivery pipe (201) is connected to the grout spray nozzle (2), and the grout delivery pipe (201) is also located on the connector (102).

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