Driving device for rotary excavating follow-up full pile casing

Abstract

The utility model discloses a driving device for a rotary excavating follow-up full pile casing. The driving device comprises an upper cross connector, a lower cross connector, a 1 # pin shaft, a 2 # pin shaft and a 3 # pin shaft, the upper cross connector comprises an upper ring and a lower ring connected with the upper ring into a whole; the upper ring is provided with a shaft hole used for being connected with the first pin shaft. The upper cross connector is connected with a power head through a 1 # pin shaft; two lug plates are symmetrically arranged on the lower ring, and shaft holes used for being connected with the third pin shaft are formed in the lug plates. A shaft hole seat is also arranged on the lower ring; the lower cross connector comprises an outer ring and an inner ring, the inner ring is arranged in the outer ring, and the inner ring and the outer ring are fixedly connected through a connecting plate; the front, rear, left and right ends of the lower cross connector are provided with shaft holes for connecting the 3 # pin shaft; the second pin shaft sequentially penetrates through the shaft hole seat, the first damping rubber mat, a shaft hole formed in the connecting plate and the second damping rubber mat. The drilling machine is easy to operate and high in practicability, the drill bit and the driving device do not need to be disassembled and assembled frequently in the process, and construction efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pile foundation construction equipment, and in particular relates to a driving device for rotary drilling and following up a full casing. Background Art

[0002] Depending on the geological conditions, rotary bored piles can be bored by dry operations, mud wall drilling, steel casing wall drilling, etc. In loose and easily collapsed strata such as backfill soil, sand, and gravel, steel casing wall drilling is the preferred reliable wall protection method. Due to the long pile length and high friction of the hole wall, high-frequency vibrating hammers, pipe rolling machines, and full-rotating machines are used to lower the long casing. However, the above methods are noisy, ineffective, and expensive. Using a rotary drilling rig to lower the casing is an efficient method.

[0003] The existing patent discloses a full casing follow-up process for bored piles of rotary pile drilling machines, with the publication number CN117779753 A. The patent states that the casing connector also includes a connecting tube and multiple sets of locking components, and the locking components include locking bolts, driven gears, driving gear columns and driving motors, and the driving motors are fixedly connected to the connecting tubes by bolts. Due to the use of motor drive connection, not only is the structure complicated and the installation is inconvenient, but also because it is set on the rotary drilling power device, it is prone to damage due to large vibration during operation.

[0004] The existing patent discloses an integrated equipment for burying and drilling steel casing of bored piles, with the authorization announcement number CN219864843 U. The patent steps describe a conversion device installed on the drill rod of a rotary drilling machine, the upper part of the conversion device is connected to the rotary power drive device of the rotary drilling machine, and the lower part of the conversion device is connected to the steel casing with detachable bolts; the bolts are detachable, and the steel casing can be detached from the connection conversion device. Since the conversion device is installed on the drill rod, the drill rod cannot be drilled, so it can only be fixed to the drill rod by welding, which is not conducive to installation and disassembly, and at the same time occupies the space for lifting the drill rod, affecting the structural performance and use function of the rotary drilling machine.

[0005] In addition, the authorization announcement number is CN 219547780 U, which discloses a rotary installation steel casing suitable for pile foundation, which is connected to the square head of the rotary drilling machine by a pin shaft; the authorization announcement number is CN 217027062 U, which discloses a self-propelled steel casing combination structure, which is connected to the square head of the rotary drilling machine by a locking pin; the authorization announcement number is CN 204370414 U, which discloses a steel casing and a drilling device for concrete cast-in-place pile drilling, which are also connected to the square head of the rotary drilling machine by a locking pin; the document "Research on Full Casing Follow-up Technology for Rotary Drilling Holes for Bridge Pile Foundations" published in "Transportation Science and Technology and Management", article number 2096-8949 (2024) 01-0080-03, the top of the device described in the document is fixed with a pin of the same material as the rotary drilling drill bit. The connection method in the above documents requires each time the casing is lowered, the drill bit is changed, and the driver is connected, which is time-consuming and reduces construction efficiency. Summary of the invention

[0006] The utility model aims to provide a driving device for rotary drilling and following up the full casing, which plays the role of connecting the power head and the driving flower pipe, avoiding repeated disassembly and installation, and plays the role of optimizing the construction process, saving construction costs and improving construction efficiency.

[0007] To achieve the above object, the utility model provides the following technical solutions: a driving device for rotary drilling and following up full casing, comprising an upper cross connector, a lower cross connector, a 1# pin, a 2# pin and a 3# pin;

[0008] The upper cross connector includes an upper ring and a lower ring connected to the upper ring; the upper ring is provided with a shaft hole for connecting the 1# pin; the upper cross connector is connected to the power head through the 1# pin, and the 1# pin located outside the upper cross connector is sleeved with a 1# circular gasket and a fixed lock plate, and is compressed and fixed by a hexagon socket bolt; two ear plates are symmetrically provided on the lower ring, and the ear plates are provided with a shaft hole for connecting the 3# pin; the lower ring is also provided with a shaft hole seat, and the shaft hole seat is provided with a shaft hole for connecting the 2# pin;

[0009] The lower cross connector includes an outer ring and an inner ring, the inner ring is arranged inside the outer ring, and the two are fixedly connected as a whole through a connecting plate; the four ends of the lower cross connector are all provided with shaft holes for connecting 3# pins, one pair of mutually symmetrical 3# pins is used to fix the lower cross connector to the driving flower tube, and the other pair of mutually symmetrical 3# pins is used to cooperate with the ear plate of the upper cross connector, and the end of the 3# pin located outside the outer ring is provided with a 2# circular gasket, and is tightened and fixed by a 1# bolt;

[0010] The 2# pin shaft passes through the shaft hole seat, the 1# shock-absorbing rubber pad, the shaft hole opened on the connecting plate and the 2# shock-absorbing rubber pad in sequence, and is tightened and fixed by the 3# circular gasket and the 2# bolt.

[0011] Preferably, the inner diameter of the upper ring is equal to the inner diameter of the lower ring, but the outer diameter of the upper ring is smaller than the outer diameter of the lower ring, and a plurality of ribs are fixedly provided at the junction of the upper ring and the lower ring.

[0012] Preferably, there are four shaft hole seats arranged on the lower ring, all of which are fixed on the outer wall of the lower ring, and the bottom of each shaft hole seat is flush with the bottom of the lower ring.

[0013] Preferably, the number of axial holes opened on the upper ring is four, and the four axial holes are arranged at equal intervals, and the number of 1# pins corresponding to the four axial holes is also four.

[0014] Preferably, there are four connecting plates between the outer ring and the inner ring, which are arranged at equal intervals.

[0015] Under the premise of ensuring the construction quality and not affecting the rotary drilling structure and use function, the utility model adopts bolts to connect with the rotary drilling machine power device, which can realize the casing installation and hole formation at the same time. The drill bit and the driving device do not need to be frequently disassembled and assembled during the process, and the torque transmission capacity is stronger, which is conducive to optimizing the construction process, saving construction costs, and improving construction efficiency. The utility model has a reasonable structure, simple installation and operation, high mechanical strength, and strong practicality. In the process of rotary drilling and full protection construction, the barrel driving device is conducive to buffering, reducing vibration and improving the dynamic performance of the shaft system in the rotating and heavy-loaded power transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a side view of the utility model;

[0018] Figure 3 It is a bottom view of the utility model;

[0019] Figure 4 This is the structural diagram of the upper cross connector;

[0020] Figure 5 This is the structural diagram of the lower cross connector. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are now described with reference to the accompanying drawings. It will be understood by those skilled in the art that the following embodiments are only used to illustrate the present invention and should not be considered as limiting the scope of the present invention. If no specific technology, connection relationship or condition is indicated in the embodiments, the technology, connection relationship, condition described in the literature in the field or the product specification is used. If the manufacturer of the materials, instruments or equipment used is not indicated, they are all conventional products that can be purchased.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention will be understood according to specific circumstances.

[0023] Combination Figure 1-Figure 5 As shown, the utility model provides a driving device for rotary drilling and following up full casing, comprising an upper cross connector 1, a lower cross connector 2, a 1# pin 3, a 2# pin 4 and a 3# pin 5;

[0024] The upper cross connector 1 includes an upper ring 101 and a lower ring 102 connected to the upper ring 101 as a whole; the upper ring 101 is provided with an axial hole for connecting the 1# pin 3; the upper cross connector 1 is connected to the power head through the 1# pin 3, and the 1# circular gasket 6 and the fixing lock plate 7 are sleeved on the 1# pin 3 located on the outer side of the upper cross connector 1, and are compressed and fixed by the hexagon socket bolt 14, that is, the hexagon socket bolt is threadedly connected to the upper cross connector; two ear plates 103 are symmetrically provided on the lower ring 102, and the ear plates 103 are provided with an axial hole for connecting the 3# pin 5; the lower ring 102 is also provided with an axial hole seat 104, and the axial hole seat 104 is provided with an axial hole for connecting the 2# pin 4;

[0025] The lower cross connector 2 includes an outer ring 201 and an inner ring 202, and the inner ring 202 is arranged in the outer ring 201. The two are concentric circle structures and are fixedly connected as a whole through a connecting plate 203. There are four connecting plates 203, which are arranged at equal intervals; the four ends of the lower cross connector 2, front, back, left and right, are all provided with shaft holes for connecting 3# pins 5, one pair of mutually symmetrical 3# pins 5 is used to fix the lower cross connector 2 to the driving flower tube, and the other pair of mutually symmetrical 3# pins 5 is used to cooperate with the ear plate 103 of the upper cross connector 1. The end of the 3# pin 5 located on the outer side of the outer ring 201 is provided with a 2# circular gasket 8, and is tightened and fixed by a 1# bolt 9, that is, the 1# bolt is threadedly connected to the 3# pin; the upper cross connector and the lower cross connector are connected at the connection point with two pins, so as to ensure that the driver plays a role in buffering, vibration reduction and improving the dynamic performance of the shaft system in the rotating and heavy-loaded power transmission;

[0026] The 2# pin shaft 4 passes through the shaft hole seat 104, the 1# shock-absorbing rubber pad 10, the shaft hole opened on the connecting plate 203 and the 2# shock-absorbing rubber pad 11 in sequence, and is compressed and fixed by the 3# circular gasket 12 and the 2# bolt 13, that is, the 2# bolt is threadedly connected with the 2# pin shaft; in the utility model, there are four 2# pin shafts 4, and the corresponding 1# shock-absorbing rubber pads 10 and 2# shock-absorbing rubber pads 11 are also four; the 1# shock-absorbing rubber pad 10 is arranged at the position where the upper cross connector is connected to the lower cross connector, and the 2# shock-absorbing rubber pad 11 is installed at the bottom of the lower cross connector 2; by installing the shock-absorbing rubber pad at the connection between the upper cross connector and the lower cross connector, the vibration during construction is effectively reduced, the vibration is prevented from directly acting on the power head, the power head is better protected, and the service life of the driver is effectively improved.

[0027] Specifically, the inner diameter of the upper ring 101 is equal to the inner diameter of the lower ring 102 , but the outer diameter of the upper ring 101 is smaller than the outer diameter of the lower ring 102 , and a plurality of ribs 105 are fixedly provided at the joint between the upper ring 101 and the lower ring 102 .

[0028] A further optimization scheme is that the number of shaft hole seats 104 arranged on the lower ring ring 102 is four, all of which are fixed on the outer wall of the lower ring ring 102, and the bottom of each shaft hole seat 104 is flush with the bottom of the lower ring ring 102; the number of shaft holes opened on the upper ring ring 101 is four, and the four shaft holes are arranged at equal intervals, and the number of 1# pin shafts 3 corresponding to the four shaft holes is also four.

[0029] When the utility model is actually used, it is only necessary to connect the upper cross connector to the power head through four 1# pins and to compress and fix them with hexagon socket bolts through circular gaskets and fixed locking plates; the lower cross connector is connected to the driving flower tube through two evenly distributed and opposite 3# pins, and at the same time, it is compressed and fixed with bolts through four circular gaskets, so that the power head and the driving flower tube are connected with a driver. The device is simple to install, effectively reduces the vibration of construction machinery directly acting on the power head, has high mechanical strength and can effectively avoid repeated installation and disassembly.

[0030] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A driving device for rotary drilling and full casing follow-up, characterized in that: It comprises an upper cross connector (1), a lower cross connector (2), a 1# pin (3), a 2# pin (4) and a 3# pin (5); The upper cross connector (1) comprises an upper ring (101) and a lower ring (102) connected to the upper ring (101); the upper ring (101) is provided with a shaft hole for connecting a 1# pin shaft (3); the upper cross connector (1) is connected to the power head via the 1# pin shaft (3); the 1# circular gasket (6) and a fixing lock plate (7) are sleeved on the 1# pin shaft (3) located outside the upper cross connector (1) and are compressed and fixed by a hexagon socket bolt (14); two ear plates (103) are symmetrically provided on the lower ring (102); the ear plates (103) are provided with a shaft hole for connecting a 3# pin shaft (5); the lower ring (102) is also provided with a shaft hole seat (104); the shaft hole seat (104) is provided with a shaft hole for connecting a 2# pin shaft (4); The lower cross connector (2) comprises an outer ring (201) and an inner ring (202), wherein the inner ring (202) is arranged inside the outer ring (201), and the two are fixedly connected as one body via a connecting plate (203); the lower cross connector (2) is provided with shaft holes for connecting 3# pins (5) at the four ends, front, back, left, and right, wherein a pair of mutually symmetrical 3# pins (5) are used to fix the lower cross connector (2) to the driving flower tube, and another pair of mutually symmetrical 3# pins (5) are used to cooperate with the ear plate (103) of the upper cross connector (1); the end of the 3# pin (5) located outside the outer ring (201) is provided with a 2# circular gasket (8), and is compressed and fixed by a 1# bolt (9); The 2# pin shaft (4) passes through the shaft hole seat (104), the 1# shock-absorbing rubber pad (10), the shaft hole opened on the connecting plate (203), and the 2# shock-absorbing rubber pad (11) in sequence, and is compressed and fixed by the 3# circular gasket (12) and the 2# bolt (13).

2. A driving device for rotary drilling and full casing according to claim 1, characterized in that: The inner diameter of the upper ring (101) is equal to the inner diameter of the lower ring (102), but the outer diameter of the upper ring (101) is smaller than the outer diameter of the lower ring (102), and a plurality of ribs (105) are fixedly provided at the junction of the upper ring (101) and the lower ring (102).

3. A driving device for rotary drilling and full casing according to claim 1, characterized in that: There are four shaft hole seats (104) arranged on the lower ring (102), all of which are fixed on the outer wall of the lower ring (102), and the bottom of each shaft hole seat (104) is flush with the bottom of the lower ring (102).

4. A driving device for rotary drilling and full casing follow-up according to claim 1 or 2, characterized in that: The number of axial holes opened on the upper ring (101) is four, and the four axial holes are arranged at equal intervals, and the number of 1# pins (3) corresponding to the four axial holes is also four.

5. The driving device for rotary drilling and full casing follow-up according to claim 1 is characterized in that: There are four connecting plates (203) between the outer ring (201) and the inner ring (202), which are arranged at equal intervals.

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