A butt joint, a drill rod and a pile driver

Abstract

The present invention provides a docking device, a drill rod and a pile driver, wherein the docking device comprises a female joint and a male joint that cooperate with each other, the male joint having a plug-in section, and the female joint having a receiving cavity, when the female joint and the male joint are in a docking state, the plug-in section is inserted into the receiving cavity to cooperate in transmitting torque, an external locking piece is provided between the female joint and the male joint to fix the female joint and the male joint, the plug-in section of the male joint cooperates with the receiving cavity of the female joint to transmit torque, and the torque is transmitted by the contact part of the plug-in section and the female joint as a whole, the contact part of the plug-in section and the female joint is subjected to force as a whole, is not easy to wear, and is not easy to be damaged, avoids the situation that the thread teeth of the existing thread are worn out and cannot be used again, and improves the service life.

Description

Technical Field

[0001] The present invention relates to the technical field of drill rod pile drivers, and in particular to a docking device, a drill rod and a pile driver. Background Art

[0002] At present, the pile driving depth of pile drivers used in construction sites is often much greater than the height of the pile drivers. The length of a single drill rod is limited by the height of the pile driver and cannot meet the required depth of pile driving. In order to solve this problem, pile drivers usually reserve multiple sections of connectable drill rods for extension operations to meet construction requirements. However, the working conditions of the drill rods are very harsh and the stress conditions are very complicated. With the increase of drilling depth, the requirements for the strength of the drill rod, especially the strength and stability of its connection parts, are getting higher and higher.

[0003] The two ends of the existing drill pipe are connected by an upper joint and a lower joint through threads, and one of the upper joint and the lower joint has an internal thread and the other has an external thread. When the two drill pipes are butt-jointed, the butt end of the drill pipe is directly screwed into the butt end of the other drill pipe. When the drill pipe rotates, the torque is transmitted by the screw connection and the force is borne by the thread. After long-term use, the threads of the threads on the drill pipe joint will inevitably wear out. The wear of the threads makes it impossible for the upper joint and the lower joint to be screwed, that is, the butted ones cannot be unscrewed and the unbutted ones cannot be butt-jointed again, which makes the entire drill pipe invalid and has a short service life. Summary of the invention

[0004] In order to solve the technical problem that the threads of the existing joints are directly stressed when the drill rod rotates, resulting in wear of the joint threads, the present invention provides a docking device, a drill rod and a pile driver to change the torque transmission mode of docking the drill rod to increase the service life of the drill rod.

[0005] To achieve the purpose of the present invention, the present invention adopts the following technical solutions:

[0006] A docking device comprises a female connector and a male connector for docking with each other, the male connector having an inserting section, and the female connector having a receiving cavity. When the female connector and the male connector are in a docking state, the inserting section is inserted into the receiving cavity to cooperate in transmitting torque, and an external locking piece is provided between the female connector and the male connector to connect and fix the female connector and the male connector.

[0007] Specifically, the docking process of the docking device provided by the present invention is to first insert the plug section of the male connector into the receiving cavity of the female connector, and then fix the female connector and the male connector to be connected by an external locking member.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: the plug-in section of the male connector cooperates with the receiving cavity of the female connector to transmit torque, and the torque is transmitted as a whole at the contact point between the outer wall of the plug-in section and the inner wall of the female connector. The plug-in section and the female connector are subjected to force as a whole and continuously at the contact point, and are not easy to wear or damage, avoiding the situation in which the existing threaded connection structure cannot be used after the thread teeth are worn, thereby improving the service life.

[0009] Furthermore, the external locking member includes a first locking member and a second locking member that are matched and connected to each other, and the first locking member and the second locking member are respectively arranged on the female connector and the male connector.

[0010] The second locking member is a screw connection member, and the first locking member is a connecting thread that matches the internal thread of the screw connection member; one of the female connector and the male connector is movably mounted on the screw connection member, and the other is provided with the connecting thread on the outer wall. The female connector and the male connector are firmly connected through the connection between the screw connection member and the connecting thread, and the female connector and the male connector are sealed. The existing direct threaded connection is stressed, and after the thread teeth are worn, there will be a phenomenon of non-sealing. The docking device of the present invention is stressed by the male connector's plug-in section and the female connector's receiving cavity, and then the screw connection and sealing are performed by the screw connection member, thereby ensuring the sealing performance of the docking device.

[0011] The first locking member is provided with a stop ring that can accept the driving force to move, and the stop ring is provided with two or more uniformly arranged circumferential stop teeth protruding toward the second locking member, and the end face tooth ratchet is provided at the end of the second locking member toward the first locking member, and when the first locking member and the second locking member are connected, the circumferential stop teeth can reversely stop the end face tooth ratchet. Through the stop of the circumferential stop teeth on the first locking member and the end face tooth ratchet on the second locking member, the stop ring can always stop the circumferential stop teeth and the end face tooth ratchet when there is no external driving force, thereby improving the stability of the docking device when rotating, and when the docking device rotates in the reverse direction, due to the stop of the circumferential stop teeth and the end face tooth ratchet, it is effectively guaranteed that the first locking member and the second locking member rotate together, preventing the first locking member and the second locking member from being disconnected, so that the docking device can be rotated in both positive and negative directions when used, thereby enhancing the applicability of the docking device.

[0012] In addition, the present invention also provides a drill rod, and the specific scheme is as follows:

[0013] A drill rod comprises a rod body and the aforementioned butt joint, wherein the female joint and the male joint are respectively installed and fixed at two axial ends of the rod body.

[0014] The drill rod provided by the present invention includes the aforementioned butt jointer, and thus has the same function as the butt jointer.

[0015] In addition, the present invention also provides a pile driver, and the specific scheme is as follows:

[0016] A pile driver comprises a pile driver body and the aforementioned drill rod, wherein the pile driver body comprises a disassembly mechanism, which can apply a thrust away from a second locking member to the stop ring at the end of the drill rod to disengage the circumferential stop teeth on the stop ring from the end face tooth ratchet of the second locking member. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.

[0018] Figure 1 is a state diagram of the docking device when docking in an embodiment of the present invention;

[0019] Figure 2 is a state diagram of the docking device when it is disassembled in the embodiment of the present invention;

[0020] Figure 3 is an axial cross-sectional view of the docking device in the embodiment of the present invention when docking;

[0021] Figure 4 is a schematic structural diagram of a drill rod in an embodiment of the present invention;

[0022] Figure 5 is a schematic diagram of the butt connection between drill rods in an embodiment of the present invention;

[0023] Figure 6 is a schematic structural diagram of a pile driver according to an embodiment of the present invention;

[0024] Figure 7 yes Figure 6 A magnified schematic diagram of part A;

[0025] Figure 8 yes Figure 6 A magnified schematic diagram of part B;

[0026] Fig. 9 is a structural schematic diagram of a first disassembly mechanism in an embodiment of the present invention;

[0027] Fig.10 is a structural schematic diagram of a first clamping mechanism in an embodiment of the present invention;

[0028] Fig.11 is a structural schematic diagram of a second disassembly mechanism in an embodiment of the present invention;

[0029] Fig.12 It is a structural schematic diagram of the second clamping mechanism in an embodiment of the present invention.

[0030] Figure numerals: 100, pile driver; 10, drill rod; 1, docking device; 11, female joint; 111, receiving cavity; 112, second locking member; 112a, screw connection member; 1121, end face tooth ratchet; 12, male joint; 121, plug-in section; 122, first locking member; 122a, connecting thread; 123, tapered section; 13, stop ring; 131, circumferential stop teeth; 14, elastic member; 15, axial limit ring; 16a, first axial through hole; 16b, second axial through hole; 16c, third axial through hole; 16d, fourth axial through hole; 16A, first passage; 16B, second passage; 17, first sealing member; 18, second sealing member; 2, rod body; 3, connecting sleeve; 20, pile driver body; 30, disassembly mechanism; 31 , first disassembly mechanism; 311, first driving member; 312, first disassembly member; 313, limit frame; 3131, limit hook; 31311, oblique pressure block; 31312, support hook; 3132, swing frame; 31321, clamping roller; 3133, track bar; 32, second disassembly mechanism; 321, second disassembly member; 3211, groove; 322, second driving member; 40, pressing head; 50, clamping mechanism; 51, first clamping mechanism; 511, clamping block; 5111, clamping roller; 52, second clamping mechanism; 521, clamp; 5211, clamp; 5212, roller; 53, clamping member; 54, driver; 55, support frame; 56, fixed seat; 60, power head; 70, drill rod moving structure. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0032] In this article, the terms "upper, lower, inside, outside" and the like are established based on the positional relationships shown in the drawings. The corresponding positional relationships may also change depending on the drawings, and therefore cannot be understood as absolute limitations on the scope of protection; moreover, relational terms such as "first" and "second" and the like are merely used to distinguish one component from another with the same name, and do not necessarily require or imply any actual relationship or order between these components.

[0033] Embodiment 1

[0034] See also Figure 1 , Figure 2 , Figure 3 , Figure 1 It is a state diagram of the docking device 1 of the present invention when docking; Figure 2It is a state diagram of the docking device 1 of the present invention when it is disassembled; Figure 3 It is a cross-sectional view of the docking device 1 of the present invention.

[0035] The present embodiment provides a docking device 1 that can be used for docking a drill pipe 10, including a female connector 11 and a male connector 12 that cooperate with each other for docking. The male connector 12 has an inserting section 121, and the female connector 11 has a receiving cavity 111. When the female connector 11 and the male connector 12 are in a docking state, the inserting section 121 is inserted into the receiving cavity 111 to cooperate in transmitting torque. An external locking member is provided between the female connector 11 and the male connector 12 to connect and fix the female connector 11 and the male connector 12.

[0036] Specifically, the docking process of the docking device 1 provided by the present invention is to first insert the plug section 121 of the male connector 12 into the receiving cavity 111 of the female connector 11, and then connect and fix the female connector 11 and the male connector 12 through an external locking member.

[0037] The plug-in section 121 of the male connector 12 cooperates with the receiving cavity 111 of the female connector 11 to transmit torque. The torque is transmitted as a whole at the contact point between the outer wall of the plug-in section 121 and the inner wall of the female connector 11. The plug-in section 121 and the female connector 11 are subjected to force as a whole and continuously at the contact point, and are not easy to wear or damage, thereby avoiding the situation in which the existing threaded connection structure cannot be used after the thread teeth are worn, thereby improving the service life.

[0038] Embodiment 2

[0039] In this embodiment, the same parts as those in the first embodiment are given the same figure marks, and the same text descriptions are omitted.

[0040] See also Figure 1-Figure 3 Compared with the first embodiment, the docking device 1 provided in this embodiment has the following different structural designs:

[0041] The outer locking member includes a first locking member 122 and a second locking member 112 which are matched and connected, and the first locking member 122 and the second locking member 112 are respectively arranged on the female connector 11 and the male connector 12. The second locking member 112 is a screw member 112a, and the first locking member 122 is a connecting thread 122a adapted to the internal thread of the screw member 112a. One of the female connector 11 and the male connector 12 is movably fitted with the screw member 112a, and the other is provided with a connecting thread 122a on the outer wall. The female connector 11 and the male connector 12 are connected and fixed by screwing the screw connector 112a with the connecting thread 122a, and the female connector 11 and the male connector 12 can be further sealed. The existing connection that is directly subjected to force through threaded connection will not be sealed after the thread wears. The docking device 1 of the present invention is subjected to force through the insertion section 121 of the male connector 12 and the receiving cavity 111 of the female connector 11, and then screwed and sealed by the screw connector, thereby ensuring the sealing performance of the docking device 1.

[0042] The screw connection 112a is screwed onto the female connector 11 or the male connector 12, that is, when the female connector 11 and the male connector 12 are connected, the screw connection 112a is screwed onto the thread for fixing the screw connection 112a and the connecting thread 122a of the female connector 11 or the male connector 12 at the same time.

[0043] Alternatively, the screw connector 112a is clamped on the female connector 11 or the male connector 12. A convex ring can be provided on the female connector 11 or the male connector 12. The convex ring is clamped on one end of the screw connector 112a, and the upper side of the convex ring has a position for the screw connector 112a to move.

[0044] Embodiment 3

[0045] In this embodiment, the same parts as those in Embodiments 1 and 2 are given the same figure marks, and the same text descriptions are omitted.

[0046] See also Figure 1-Figure 3 Compared with the first and second embodiments, the docking device 1 provided in this embodiment has the following different structural designs:

[0047] The plug section 121 is in non-circular contact with the receiving cavity 111 (non-circular means a non-full circle in the circumferential direction), and there is no gap between the plug section 121 and the receiving cavity 111, and the torque is transmitted through the non-circular contact. More preferably, the cavity wall of the receiving cavity 111 and the outer wall of the plug section 121 are both regular polygonal force-bearing surfaces, and the male connector 12 and the female connector 11 adopt surface-to-surface contour contact to transmit torque, thereby increasing the force-bearing area, stably transmitting torque, improving stability, and not being easily damaged, thereby increasing service life.

[0048] The male connector 12 also has a tapered section 123 located at the front end of the plug-in section 121, a first axial through hole 16a is formed between the small diameter end of the tapered section 123 and the tail of the male connector 12, and a second axial through hole 16b is formed between the outer tapered surface of the tapered section 123 and the tail of the male connector 12; a third axial through hole 16c and a fourth axial through hole 16d are formed between the tail of the female connector 11 and the bottom of the receiving cavity 111, and when the female connector 11 and the male connector 12 are docked and fixed, the first axial through hole 16a and the third axial through hole 16c are connected to form a first channel 16A, and the second axial through hole 16b is connected to the fourth axial through hole 16d via the receiving cavity 111 to form a second channel 16B.

[0049] After the plug section 121 of the male connector 12 is inserted into the receiving cavity 111 of the female connector 11, the end of the plug section 121 abuts against the top wall of the receiving cavity 111, and the bottom of the plug section 121 abuts against the lower end of the female connector 11. The axis of the first axial through hole 16a is substantially coincident with the axis of the male connector 12, the second axial through hole 16b is located beside the first axial through hole 16a, and the axis of the third axial through hole 16c is preferably substantially coincident with the axis of the female connector 11, but the axis of the third axial through hole 16c and the axis of the female connector 11 can of course be radially staggered. The fourth axial through hole 16d is located beside the third axial through hole 16c. After the plug-in section 121 is inserted into the receiving cavity 111, the first axial through hole 16a and the third axial through hole 16c are connected to form a first channel 16A, and the second axial through hole 16b and the fourth axial through hole 16d are connected to the receiving cavity 111 to form a second channel 16B. By setting the front end of the male connector 12 to a tapered section 123, the receiving cavity 111 at the docking point with the front end of the male connector 12 has a gap connecting the second axial through hole 16b and the fourth axial through hole 16d. The dual channels are reasonably set, so that the docking device 1 can effectively transport different materials when in use.

[0050] In addition, the tapered section 123 is provided with a first sealing member 17 that can isolate the first passage 16A from the second passage 16B.

[0051] An equal-diameter circular transition section is formed between the plug-in section 121 and the tapered section 123 , and a second sealing member 18 is provided in the circular transition section. When the female connector 11 and the male connector 12 are in a docked and fixed state, the second sealing member 18 abuts against the equal-diameter circular transition section to seal the second channel 16B and the plug-in section 121 .

[0052] Embodiment 4:

[0053] In this embodiment, the same parts as those in Embodiments 1, 2, and 3 are given the same figure marks, and the same text descriptions are omitted.

[0054] See also Figure 1-Figure 3 Compared with the first, second and third embodiments, the docking device 1 provided in this embodiment has the following different structural designs:

[0055] The first locking member 122 is provided with a stop ring 13 which can accept the driving force to move. The stop ring 13 is protruded toward the second locking member 112 and is provided with more than two evenly arranged circumferential stop teeth 131. The end of the second locking member 112 is provided with an end face tooth ratchet 1121 toward the first locking member 122. When the first locking member 122 and the second locking member 112 are connected, the circumferential stop teeth 131 can reversely stop the end face tooth ratchet 1121. By locking the circumferential retaining teeth 131 on the first locking member 122 and the end face tooth ratchet 1121 on the second locking member 112, the retaining ring 13 can always keep the circumferential retaining teeth 131 and the end face tooth ratchet 1121 locked when there is no external driving force, thereby improving the stability of the docking device 1 during rotation, and when the docking device 1 rotates in the reverse direction, due to the locking of the circumferential retaining teeth 131 and the end face tooth ratchet 1121, it is effectively guaranteed that the first locking member 122 and the second locking member 112 rotate together, preventing the first locking member 122 and the second locking member 112 from being disconnected, so that the docking device 1 can be rotated in both forward and reverse directions when in use, thereby enhancing the applicability of the docking device 1.

[0056] Specifically, in the process of screwing the screw connector 112a to the connecting thread 122a, the screw connector 112a is screwed until it abuts against the tooth tip of the circumferential stop tooth 131. When the screwing continues, the screw connector 112a presses down the stop ring 13 to move, and the stop ring 13 moves away from the screw connector 112a, so that the screw connector 112a can continue to be screwed to achieve torque overload protection, until the screw connector 112a is screwed to abut against the stop ring 13, at which time the circumferential stop tooth 131 is locked with the end face tooth ratchet 1121.

[0057] The blocking surface of the circumferential blocking teeth 131 faces the blocking surface on the end face tooth ratchet 1121, so that when the docking device 1 rotates in the opposite direction, the blocking surfaces of the circumferential blocking teeth 131 and the end face tooth ratchet 1121 are subjected to force and are not easy to disengage, effectively preventing the circumferential blocking teeth 131 and the end face tooth ratchet 1121 from being disengaged.

[0058] The circumferential retaining teeth 131 are adapted to the receiving grooves between the adjacent locking teeth on the end face tooth ratchet 1121. Preferably, the depth of the receiving grooves is greater than the height of the circumferential retaining teeth 131, so that the circumferential retaining teeth 131 and the end face tooth ratchet 1121 are more closely matched, thereby making the locking of the circumferential retaining teeth 131 and the end face tooth ratchet 1121 more stable.

[0059] A plurality of elastic members 14 are evenly arranged around the lower side of the stop ring 13. Specifically, an elastic member 14 is arranged between the axial limit ring 15 and the stop ring 13. The elastic member 14 provides support force to the stop ring 13, so that the stop ring 13 can always lock the circumferential retaining teeth 131 with the end face tooth ratchet 1121 when there is no external driving force, thereby improving the stability of the docking device 1 when rotating. Moreover, by evenly arranging a plurality of elastic members 14 to provide a stable support force to the stop ring 13, when an external force pushes the stop ring 13, the elastic member 14 can evenly provide a force to reset the stop ring 13, and the stop ring 13 is evenly stressed, thereby ensuring the stability of the locking of the circumferential retaining teeth 131 with the end face tooth ratchet 1121.

[0060] The elastic member 14 is a compression spring axially abutting against the backstop ring 13 . The compression spring is a rectangular spring or a leaf spring to stably provide the backstop ring 13 with a force to support the circumferential retaining teeth 131 and the end face tooth ratchet 1121 to stop.

[0061] The extrusion spring and the backstop ring 13 are an integrated structure, or a limiting groove for embedding the extrusion spring is provided at the lower end of the backstop ring 13 to prevent the extrusion spring from detaching from the backstop ring 13 and ensure the stability of the circumferential retaining teeth 131 and the end face tooth ratchet 1121.

[0062] Embodiment 5

[0063] In this embodiment, the same parts as those in Embodiments 1, 2, 3 and 4 are given the same figure marks, and the same text descriptions are omitted.

[0064] See also Figure 1-Figure 6 , Figure 4 It is a schematic structural diagram of the drill rod 10 of the present invention; Figure 5 It is a schematic diagram of the drill pipe 10 of the present invention being butted against the drill pipe 10; Figure 6 Schematic diagram of the structure of the pile driver 100 of the present invention. Compared with the first, second, third and fourth embodiments, the pile driver 100 provided in this embodiment has the following features:

[0065] The pile driver 100 includes a pile driver body 20 and a drill rod 10 .

[0066] The drill rod 10 includes a rod body 2 and the aforementioned docking device 1, and a female connector 11 and a male connector 12 are respectively installed and fixed at the axial ends of the rod body 2, so that when the drill rod 10 is docked or when the drill rod 10 is connected to the pile driver 100, the female connector 11 and the male connector 12 can be docked, which is convenient to operate, and the plug-in section 121 of the male connector 12 cooperates with the female connector 11 to transmit torque. When the drill rod 10 rotates, the torque transmission is stable, the drill rod 10 is not easily damaged, and the service life of the drill rod 10 is increased.

[0067] Preferably, the female connector 11 and the male connector 12 are respectively installed and fixed on the rod body 2 through a connecting sleeve 3. When the female connector 11 or the male connector 12 is damaged, it can be replaced to improve the service life of the rod body 2 of the drill pipe 10, and an axial limit ring 15 is formed with one of the connecting sleeves 3 to support the elastic member 14.

[0068] Preferably, the connecting sleeve 3 and the rod body 2 are an integral structure, which is convenient for connection with the female connector 11 and the male connector 12 , and the connection between the rod body 2 itself and the female connector 11 and the male connector 12 can enhance the stability of the drill pipe 10 .

[0069] Among them, the pile driver body 20 includes a disassembly mechanism 30, which can apply a thrust away from the second locking member 112 to the stop ring 13 at the end of the drill rod 10 to disengage the circumferential retaining teeth 131 on the stop ring 13 from the end face tooth ratchet 1121 of the second locking member 112. The disassembly mechanism 30 drives the docked drill rod 10 or the docked drill rod 10 and the stop ring 13 of the pile driver 100 to disengage the circumferential retaining teeth 131 from the end face tooth ratchet 1121, so that the docked drill rod 10 or the docked drill rod 10 and the pile driver 100 are disengaged, and can be operated to be disassembled, which is easy to operate.

[0070] Specifically, the drill rod 10 is installed on the pile driver 100, and the part of the first locking member 122 having the back-stop ring 13 is located at the disassembly mechanism 30. When the disassembly mechanism 30 gives a thrust to the back-stop ring 13, the back-stop ring 13 moves, so that the circumferential retaining teeth 131 on the back-stop ring 13 are disengaged from the end face tooth ratchet 1121 of the second locking member 112, and the first locking member 122 and the second locking member 112 can be disassembled, so that the docked drill rod 10 or the docked drill rod 10 and the pile driver 100 can be disassembled.

[0071] Embodiment 6

[0072] In this embodiment, the same parts as those in Embodiments 1, 2, 3, 4 and 5 are given the same figure marks, and the same text descriptions are omitted.

[0073] See also Figure 1-Figure 9 , Figure 7 yes Figure 6 The enlarged schematic diagram of part A in the figure. Figure 8 yes Figure 6 The enlarged schematic diagram of part B in the figure is as follows: Fig. 9 : is a schematic diagram of the structure of the first disassembly mechanism 31. Compared with the first, second, third, fourth and fifth embodiments, the pile driver 100 provided in this embodiment has the following different structural designs:

[0074] The pile driver body 20 also includes a pressing head 40, which has a female connector 11 that cooperates with the male connector 12 of the drill rod 10. When the drill rod 10 is connected to the pressing head 40, the plug-in section 121 of the drill rod 10 is inserted into the receiving cavity 111 of the pressing head 40, and the first locking piece 122 on the pressing head 40 is connected to the second locking piece 112 on the drill rod 10, and the circumferential stop teeth 131 are locked with the end face tooth ratchet 1121. Specifically, the pressure head 40 is used to press the drill rod 10 underground, and the disassembly mechanism 30 is located next to the second locking piece 112 of the pressure head 40. When the drill rod 10 and the pressure head 40 are disassembled, the stop ring 13 that is engaged with the second locking piece 112 of the pressure head 40 is pressed down, so that the circumferential stop teeth 131 on the stop ring 13 and the end face tooth ratchet 1121 are disengaged, so that the second locking piece 112 of the pressure head 40 will not rotate with the drill rod 10 when it rotates, thereby allowing it to be disassembled.

[0075] The disassembly mechanism 30 includes a first disassembly mechanism 31, which is located at the connection between the lower pressure head 40 and the drill rod 10 or at the docking point of the docking drill rod 10. The first disassembly mechanism 31 includes a first driving member 311, a first disassembly member 312 and a limit frame 313. The first disassembly member 312 is movably installed on the limit frame 313. The first driving member 311 drives the first disassembly member 312 to apply a thrust to the stop ring 13 away from the second locking member 112 so that the circumferential blocking teeth 131 on the stop ring 13 are disengaged from the end face tooth ratchet 1121 of the second locking member 112. Preferably, the limiting frame 313 includes a plurality of limiting hooks 3131 and two hinged swing frames 3132, and the free ends of the two swing frames 3132 are connected to a first driving member 311, the limiting hook 3131 includes an inclined pressure block 31311 and a supporting hook 31312, one end of the inclined pressure block 31311 is fixedly connected to the swing frame 3132, and the other end is fixedly connected to the supporting hook 31312, there is a gap between the bottom end face of the inclined pressure block 31311 and the end face of the supporting hook 31312, and the bottom end face of the inclined pressure block 31311 has an inclined surface, and the first disassembly member 312 is movably arranged in the gap between the inclined pressure block 31311 and the supporting hook 31312, The first disassembly part 312 located at the gap has an extrusion inclined surface adapted to the inclined surface of the bottom end of the inclined pressure block 31311. When the lower pressure head 40 and the drill rod 10 are disassembled or two docked drill rods 10 are disassembled, the first driving part 311 drives the two swing frames 3132 to move and clamp. The swing frames 3132 drive the oblique pressure block 31311 to move and squeeze the first disassembly part 312 so that the first disassembly part 312 applies a thrust to the stop ring 13 away from the second locking part 112, so that the circumferential blocking teeth 131 on the stop ring 13 are disengaged from the end face tooth ratchet 1121 of the second locking part 112, so that the second locking part 112 will not rotate with it when the drill rod 10 rotates.

[0076] Preferably, one end of the swing frame 3132 connected to the first driving member 311 is movably disposed on the track bar 3133, so that when the first driving member 311 drives the swing frame 3132 to move, the movement of the swing frame 3132 is more stable.

[0077] Preferably, the swing frame 3132 has a clamping roller 31321 facing the drill rod 10, and the axial direction of the clamping roller 31321 is different from the axial direction of the drill rod 10. When the lower pressure head 40 and the drill rod 10 are removed or the two docked drill rods 10 are removed, the first driving member 311 drives the two swing frames 3132 to move, and the clamping roller 31321 clamps the second locking member 112. When the drill rod 10 rotates, the second locking member 112 will not rotate with it.

[0078] Embodiment 7

[0079] In this embodiment, the same parts as those in Embodiments 1, 2, 3, 4, 5 and 6 are given the same figure marks, and the same text descriptions are omitted.

[0080] See also Figure 1-Figure 12 , Fig.10 is a schematic structural diagram of the first clamping mechanism 51; Fig.11 is a schematic structural diagram of the second disassembly mechanism 32; Fig.12 : is a schematic diagram of the structure of the second clamping mechanism 52. Compared with the fifth and sixth embodiments, the pile driver 100 provided in this embodiment has the following different structural designs:

[0081] The pile driver body 20 also includes a clamping mechanism 50 for clamping the drill rod 10. The clamping mechanism 50 is located beside the drill rod 10. The clamping mechanism 50 includes a clamping member 53 and a driver 54. The driver 54 is connected to and drives the clamping member 53 to clamp the drill rod 10. When the down-head 40 and the drill rod 10 or two butted drill rods 10 are disassembled, the drill rod 10 is clamped by the clamping mechanism 50 to prevent the drill rod 10 from falling.

[0082] The clamping mechanism 50 includes a first clamping mechanism 51 and a second clamping mechanism 52. The first clamping mechanism 51 and the second clamping mechanism 52 both include a clamping member 53 and a driver 54. When two butt-jointed drill rods 10 are disassembled, the first clamping mechanism 51 and the second clamping mechanism 52 clamp the upper drill rod and the lower drill rod respectively to prevent the upper drill rod and the lower drill rod from falling during disassembly.

[0083] Preferably, the clamping member 53 of the first clamping mechanism 51 is a clamping block 511 having a clamping roller 5111, and the driver 54 of the first clamping mechanism 51 drives the clamping block 511 to move so that the clamping roller 5111 clamps the drill rod 10. Specifically, the first clamping mechanism 51 has a U-shaped groove, and the drill rod 10 is located in the U-shaped groove. The clamping blocks 511 and the driver 54 are arranged on both sides of the U-shaped groove. When clamping the drill rod 10, the drivers 54 on both sides drive the clamping blocks 511 on the same side to clamp the drill rod 10 from both sides, so as to stably clamp the drill rod 10. The axial direction of the clamping roller 5111 is at an acute angle or a right angle to the axial direction of the drill rod 10, so that when the drill rod 10 is disassembled, the upper drill rod is restricted from rotating, the lower drill rod rotates, and the screw connection 112a of the upper drill rod is disconnected from the connecting thread 122a of the male connector 12 of the lower drill rod.

[0084] Preferably, the clamping member 53 of the second clamping mechanism 52 is a rotatable clamp 521, and the driver 54 of the second clamping mechanism 52 drives the clamp 521 to clamp to clamp the drill rod 10. Specifically, the drill rod 10 is located in the middle of the clamp 521, and the clamp 521 clamps the drill rod 10 when clamping. More preferably, the clamp 521 has a plurality of rollers 5212 on one side adjacent to the drill rod 10, and the axis centerline direction of the rollers 5212 is the same as the axis centerline direction of the drill rod 10, so that the drill rod 10 can be rotated circumferentially while preventing the drill rod 10 from falling. More preferably, a support frame 55 is provided on the pile driver body 20, and the clamp 521 includes two clamps 5211, which are movably fixed on the support frame 55, and a fixing seat 56 is provided in the middle of one end of the two clamps 5211. The two ends of the two drivers 54 are respectively connected to the clamps 5211 and the fixing seat 56, and the positions of the clamps 5211 are limited by the fixing seat 56. Drivers 54 are provided on both sides of the fixing seat 56. When the drivers 54 are used at the same time, traction can be eliminated, damage to the fixing seat 56 can be avoided, and the stability and life of the clamp 521 are improved.

[0085] The disassembly mechanism 30 includes a second disassembly mechanism 32, and the second disassembly mechanism 32 includes a second disassembly component 321 and a second driving component 322. The second disassembly component 321 and the second driving component 322 are both installed on the lower end surface of the first clamping mechanism 51, and the second driving component 322 is connected to and drives the second disassembly component 321 to clamp the drill rod 10. When the two butt-jointed drill rods 10 are disassembled, the second driving component 322 drives the second disassembly component 321 to clamp the drill rod 10, and the drill rod 10 moves upward, and the second disassembly component 321 applies a thrust to the stop ring 13 away from the second locking component 112 to disengage the circumferential blocking teeth 131 from the end face tooth ratchet 1121. Specifically, the second disassembly mechanism 32 is a clamping plate arranged on the lower end surface of the first clamping mechanism 51, and each side of the U-shaped groove has a clamping plate and a second driving member 322. The two clamping plates are clamped together. When the drill rod 10 is lifted by the moving structure of the drill rod 10, the clamping plate presses down the backstop ring 13, so that the circumferential retaining teeth 131 and the end face tooth ratchet 1121 are disengaged, and the power head 60 rotates the drill rod 10, and the screw connection 112a of the upper drill rod and the connecting thread 122a of the male connector 12 of the lower drill rod are disengaged. Preferably, the second disassembly member 321 is a groove 3211 adapted to the outer surface of the drill rod 10, so that the drill rod 10 is clamped when clamped together, and the clamped through hole is smaller than the diameter of the backstop ring 13.

[0086] The pile driver body 20 further includes a power head 60 and a drill rod 10 moving structure, wherein the power head 60 is used to rotate the drill rod 10, and the drill rod 10 moving structure is used to move the drill rod 10 into or out of the drill rod 10 working area of ​​the pile driver body 20, and to move the drill rod 10 upward. Specifically, the down-pressing head 40, the first disassembly mechanism 31, the first clamping mechanism 51, the second disassembly mechanism 32, the second clamping mechanism 52 and the power head 60 are sequentially arranged from top to bottom.

[0087] Embodiment 8

[0088] In this embodiment, the same parts as those in Embodiments 1, 2, 3, 4, 5, 6 and 7 are given the same figure marks, and the same text descriptions are omitted.

[0089] See also Figure 1-Figure 12 Compared with the first, second, third, fourth, fifth, sixth and seventh embodiments, this embodiment provides a method for disassembling and assembling a drill rod 10 in a pile driver 100, including a disassembly method and an installation method of the drill rod 10.

[0090] The disassembly method includes disassembling the pressure head 40 from the drill rod 10 and disassembling the drill rod 10 from the drill rod 10;

[0091] The disassembly of the pressure head 40 and the drill rod 10 includes the following steps:

[0092] Step 1: The first disassembly mechanism 31 clamps the screw connection in the pressing head 40, and disengages the circumferential retaining teeth 131 from the end face tooth ratchet 1121; at the same time, the clamping mechanism 50 clamps the drill rod 10 to prevent the drill rod 10 from falling axially;

[0093] Step 2: The power head 60 rotates the drill rod 10 to disengage the threaded connection between the threaded member 112 a of the pressure head 40 and the connecting thread 122 a of the drill rod 10 .

[0094] Specifically, in step one, the first driving member 311 drives the swing frame 3132 to clamp the screw connection in the pressure head 40. At the same time, the swing frame 3132 drives the inclined pressure block 31311 to move and squeeze the first disassembly member 312. The first disassembly member 312 presses down the stop ring 13 to disengage the end face tooth ratchet 1121 on the screw connection in the pressure head 40 from the circumferential blocking teeth 131 on the drill rod 10.

[0095] The disassembly of the drill rod 10 and the drill rod 10 comprises the following steps:

[0096] Step 1: The moving structure of the drill rod 10 is connected to the male connector 12 of the upper drill rod, and the upper and lower drill rods are lifted. While the upper and lower drill rods are moved upward, the second disassembly mechanism 32 presses down the stop ring 13 to disengage the end face tooth ratchet 1121 of the screw connection on the lower drill rod from the circumferential stop teeth 131 on the upper drill rod;

[0097] Step 2: The first clamping mechanism 51 clamps the upper drill rod, and the second clamping mechanism 52 clamps the lower drill rod;

[0098] Step 3: The power head 60 rotates the lower drill rod to disengage the threaded connection between the threaded member 112a of the upper drill rod and the connecting thread 122a of the lower drill rod.

[0099] Specifically, in step 1, the second driving member 322 drives the second disassembly member 321 to clamp, and when the drill rod 10 moving structure lifts the drill rod 10, the second disassembly member 321 presses down the stop ring 13, so that the end face tooth ratchet 1121 of the screw connection on the lower drill rod is disengaged from the circumferential stop tooth 131 on the upper drill rod; in step 2, the driver 54 of the first clamping mechanism 51 drives the clamping block 511 to move so that the clamping roller 5111 clamps the upper drill rod, and the driver 54 of the second clamping mechanism 52 drives the clamp 521 to clamp to clamp the lower drill rod.

[0100] The installation method includes the following steps:

[0101] Step a, moving the outer drill rod to the place where the pile driver 10 connects to the drill rod 10 through the drill rod 10 moving structure, and docking the female connector 11 of the outer drill rod with the male connector 12 of the drill rod 10 on the pile driver 100;

[0102] Step b, the first clamping mechanism 51 clamps the outer drill rod to prevent the outer drill rod from falling axially, and then the moving structure of the drill rod 10 releases the outer drill rod to move outside the pile driver 100;

[0103] Step c, the power head 60 rotates the inner drill rod, so that the screw connection 112a of the female connector 11 of the inner and outer drill rods and the connecting thread 122a of the male connector 12 are screwed together, and the end face tooth ratchet 1121 is locked with the circumferential stop tooth 131;

[0104] Step d, the pressure head 40 moves downward, the female connector 11 of the pressure head 40 is connected with the male connector 12 of the outer drill rod, and the power head 60 rotates the inner and outer drill rods so that the connecting thread 122a of the male connector 12 of the outer drill rod is threadedly connected with the screw connector 112a of the female connector 11 of the pressure head 40, and the end face tooth ratchet 1121 is locked with the circumferential stop tooth 131.

[0105] Specifically, before step a, the method further includes disassembling the pressing head 40 from the inner drill rod. After the pressing head 40 is disassembled from the drill rod 10, the pressing head 40 is moved upward to the upper part of the pile driver 100 to free up the drill rod 10 so that the movable structure moves into the pile driver 100. In step a, when the outer drill rod is docked with the inner drill rod, the plug-in section 121 of the male connector 12 is first inserted into the non-circular accommodating cavity 111 of the female connector 11. In step d, when the pressing head 40 is moved downward, the plug-in section 121 of the male connector 12 of the outer drill rod is inserted into the non-circular accommodating cavity 111 of the female connector 11 of the pressing head 40.

[0106] In the above-mentioned embodiments 1 to 8, during the docking process of the docking device 1, torque transmission is achieved through the plug-in section 121 of the male connector 12 and the female connector 11, and the female connector 11 and the male connector 12 are firmly connected by screwing the movable screw 112a on the female connector 11 with the connecting thread 122a on the male connector 12, so that the torsion transmission of the docking device 1 of the present invention is stable, the torque transmission process will not affect other structures, the service life is improved, and the docking is easy to operate. Some technical implementation methods of embodiments 1 to 8 can be combined or replaced.

[0107] The above are only preferred embodiments of the present invention. The protection scope of the present invention shall be based on the scope defined by the claims. Several improvements and modifications 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

1. A pile driver, characterized in that: It includes a pile driver body and a drill rod; the drill rod includes a rod body and a butt joint; The docking device comprises a female connector and a male connector that are matched and docked with each other, the male connector has an inserting section, and the female connector has a receiving cavity. When the female connector and the male connector are in a docking state, the inserting section is inserted into the receiving cavity to cooperate and transmit torque, and an external locking member is provided between the female connector and the male connector to connect and fix the female connector and the male connector; The outer locking member comprises a first locking member and a second locking member which are matched and connected, and the first locking member and the second locking member are respectively arranged on the female connector and the male connector; The first locking member is provided with a stop ring capable of receiving a driving force to move, the stop ring is provided with two or more circumferential stop teeth evenly arranged protruding toward the second locking member, the end of the second locking member is provided with an end face tooth ratchet toward the first locking member, and when the first locking member and the second locking member are connected, the circumferential stop teeth can reversely stop the end face tooth ratchet; a plurality of elastic members are evenly arranged circumferentially on the lower side of the stop ring; The female joint and the male joint are respectively installed and fixed at two axial ends of the rod body; the female joint and the male joint are respectively installed and fixed on the rod body through a connecting sleeve; the connecting sleeve and the rod body are an integral structure; The pile driver body comprises a disassembly mechanism, which can apply a thrust away from the second locking member to the stop ring at the end of the drill rod so as to disengage the circumferential stop teeth on the stop ring from the end face teeth ratchet of the second locking member; the part of the first locking member having the stop ring is located at the disassembly mechanism; The pile driver body further comprises a pressing head, wherein the pressing head comprises a female joint matched with the male joint of the drill rod, and when the drill rod and the pressing head are connected, the first locking member on the pressing head is connected with the second locking member on the drill rod, and the circumferential stopper is locked with the end face tooth ratchet; The disassembly mechanism includes a first disassembly mechanism, which is located at the connection between the lower pressure head and the drill rod or at the docking position of the docking drill rod, and includes a first driving member, a first disassembly member and a limiting frame, and the first disassembly member is movably mounted on the limiting frame, and the first driving member drives the first disassembly member to apply a thrust to the stop ring away from the second locking member so that the circumferential stop teeth on the stop ring are disengaged from the end face tooth ratchet of the second locking member; The limit frame includes a plurality of limit hooks and two swing frames hingedly connected, and the free ends of the two swing frames are connected to the first driving member, the limit hook includes an inclined pressure block and a support hook, one end of the inclined pressure block is fixedly connected to the swing frame, and the other end is fixedly connected to the support hook, a gap is provided between the bottom end face of the inclined pressure block and the end face of the support hook, and the bottom end face of the inclined pressure block has an inclined surface, the first disassembly member is movably arranged in the gap between the inclined pressure block and the support hook, and the first disassembly member located at the gap has an extrusion inclined surface adapted to the inclined surface of the bottom end of the inclined pressure block. When the lower pressure head and the drill rod are disassembled or the two butted drill rods are disassembled, the first driving member drives the two swing frames to move and clamp, and the swing frame drives the inclined pressure block to move and extrude the first disassembly member so that the first disassembly member applies a thrust to the stop ring away from the second locking member to disengage the circumferential stop teeth on the stop ring from the end face teeth ratchet of the second locking member; One end of the swing frame connected to the first driving member is movably arranged on the track bar; The swing frame has a clamping roller facing the drill rod. When the lower pressure head and the drill rod are removed or two butted drill rods are removed, the first driving member drives the two swing frames to move, and the clamping roller clamps the second locking member so that the second locking member is disconnected from the first locking member when the drill rod rotates.

2. The pile driver according to claim 1, characterized in that: The second locking member is a screw-connecting member, and the first locking member is a connecting thread matched with the internal thread of the screw-connecting member; One of the female connector and the male connector is movably mounted on the threaded connector, and the other connector is provided with the connecting thread on the outer wall; The screw connection piece is screwed onto the female joint or the male joint, or the screw connection piece is clamped onto the female joint or the male joint.

3. The pile driver according to claim 1, characterized in that: The plug-in section is in non-circular contact with the receiving cavity, and there is no gap between the plug-in section and the receiving cavity; The cavity wall of the receiving cavity and the outer wall of the plug-in section are both regular polygonal force-bearing surfaces; The male connector further comprises a tapered section at the front end of the plug section, a first axial through hole is formed between the small diameter end of the tapered section and the tail of the male connector, and a second axial through hole is formed between the outer tapered surface of the tapered section and the tail of the male connector; A third axial through hole and a fourth axial through hole are formed between the tail of the female connector and the bottom of the receiving cavity. When the female connector and the male connector are butt-jointed and fixed, the first axial through hole and the third axial through hole are connected to form a first channel, and the second axial through hole is connected to the fourth axial through hole via the receiving cavity to form a second channel. The conical section is provided with a first sealing member capable of isolating the first channel from the second channel; An equal-diameter circular transition section is formed between the plug-in section and the tapered section, and the circular transition section is provided with a second sealing member. When the female connector and the male connector are in a docked and fixed state, the second sealing member abuts against the equal-diameter circular transition section to seal the second channel and the plug-in section.

4. The pile driver according to claim 1, characterized in that: The pile driver body also includes a clamping mechanism for clamping the drill rod, the clamping mechanism is located beside the drill rod, the clamping mechanism includes a clamping member and a driver, the driver is connected to and drives the clamping member to clamp the drill rod; The clamping mechanism comprises a first clamping mechanism and a second clamping mechanism, and the first clamping mechanism and the second clamping mechanism both comprise the clamping member and the driver; The clamping member of the first clamping mechanism is a clamping block with a clamping roller, and the driver of the first clamping mechanism drives the clamping block to move so that the clamping roller clamps the drill rod; The clamping member of the second clamping mechanism is a rotatable clamp, and the driver of the second clamping mechanism drives the clamp to clamp to clamp the drill rod; The clamp has a plurality of rollers on one side adjacent to the drill rod, and the axis direction of the rollers is the same as the axis direction of the drill rod; The axis of the clamping roller is in a different direction from the rolling axis of the roller; A support frame is arranged on the pile driver body, and the clamp comprises two clamps which are movably fixed on the support frame, a fixing seat is arranged in the middle of one end of the two clamps, and two ends of the two drivers are respectively connected to the clamps and the fixing seat.

5. The pile driver according to claim 4, characterized in that: The disassembly mechanism comprises a second disassembly mechanism, the second disassembly mechanism comprises a second disassembly member and a second driving member, the second disassembly member and the second driving member are both mounted on the lower end surface of the first clamping mechanism, and the second driving member is connected to and drives the second disassembly member to clamp the drill rod. When two butted drill rods are disassembled, the second driving member drives the second disassembly member to clamp the drill rod, the drill rod moves upward, and the second disassembly member applies a thrust force to the stop ring away from the second locking member to disengage the circumferential stop teeth from the end face tooth ratchet. The second disassembly member has a groove adapted to the outer surface of the drill rod; The pile driver body also includes a power head and a drill rod moving structure. The power head is used to rotate the drill rod. The drill rod moving structure is used to move the drill rod into or out of the drill rod working area of ​​the pile driver body and to move the drill rod upward.

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