Block-shaped double-pin bracket for spiral drilling machine and using method thereof

Abstract

The invention relates to the related technical field of double-pin bracket lubrication, in particular to a blocky double-pin bracket for a spiral drilling machine and a using method thereof.The blocky double-pin bracket comprises a main plate, a first connecting base, a second connecting base and a bracket body, the main plate is a rectangular platform, a hinge base is fixedly welded to the lower surface of the main plate, and the drilling machine is installed on the hinge base through a connecting piece; a first-stage mounting hole is formed in the first connecting seat; an oil storage groove is formed in a main shaft, a positioning seat and a limiting cap, a first-stage piston and a supporting spring are arranged in the oil storage groove, a first-stage oil channel, a second-stage oil channel, a piston groove and a lubricating oil hole are formed in the main shaft, a second-stage piston is arranged in the piston groove, and an oil guide groove is formed in the side wall of the second-stage piston. The second-stage piston and the supporting seat on the adapter seat act to bear force, so that the first-stage oil duct and the second-stage oil duct are communicated and disconnected through the oil guide groove through movement of the second-stage piston, and the self-lubricating effect of lubricating oil on the joint of the mounting shaft and the adapter seat is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field related to the lubrication of a double-pin bracket, and particularly to a block-shaped double-pin bracket for a screw drill and its usage method. Background Art

[0002] A screw drill is a screw blade drilling machine, which mainly consists of a top pulley group, a power head, a screw drill tool, a hydraulic lifting rod, an operator's cab, a chassis, a traveling mechanism, a slewing mechanism, a hoisting wire rope, a mast column, a hoisting winch, a hydraulic system and an electrical system; The existing Chinese patent document with the publication number CN220036596U discloses a drill base assembly and a frame including the drill base assembly. The solution includes: a base, the base is in a long strip shape; a bracket, the bracket is used for installing a drill machine tool and is rotatably arranged directly above the base, and the rotation axis line of the bracket extends along a horizontal direction perpendicular to the length direction of the base; an alignment support assembly, the alignment support assembly is arranged between the base and the bracket, and the alignment support assembly includes a driving unit for driving the bracket to rotate and a support arranged on the base and rotatably connected to the bracket; the support is a hollow support, and an oil inlet and an oil outlet communicated with its inner cavity are arranged on the support, and a filter element is connected to the support; However, in the above solution, there is no self-adding structure for lubricating oil at the bracket part, which leads to the need for regular lubricating oil addition and maintenance at the rotating part of the bracket, which is rather inconvenient. Therefore, the present invention proposes a block-shaped double-pin bracket for a screw drill and its usage method to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a block-shaped double-pin bracket for a screw drill and its usage method to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A block-shaped double-pin bracket for a screw drill, including: A main board, the main board is a rectangular platform, and a hinge seat is fixedly welded on the lower surface of the main board, and a drill is installed on the hinge seat through a connecting piece; A first connecting seat, a first-level installation hole is opened on the first connecting seat; A second connecting seat, a second-level installation hole is opened on the second connecting seat, the second-level installation hole is correspondingly arranged with the first-level installation hole, and the first connecting seat and the second connecting seat are rotatably installed on a transfer seat on the frame through a mounting shaft; A bracket body, the bracket body is fixedly connected to the lower surface of the main board, and the bracket body is used for limiting the drill.

[0005] Preferably, the primary mounting hole is a regular hexagonal hole structure. The mounting shaft is composed of a main shaft, a positioning seat, and a limit cap. The main shaft, the positioning seat, and the limit cap are integrally formed. The size of the positioning seat matches that of the primary mounting hole, and the size of the main shaft matches that of the secondary mounting hole. During actual installation, the positioning seat is inserted into the primary mounting hole, and the main shaft is inserted into the secondary mounting hole. A pin shaft hole is provided at the end of the main shaft, and the mounting shaft is positioned by a positioning pin in the pin shaft hole.

[0006] Preferably, oil storage grooves are provided on the main shaft, the positioning seat, and the limit cap. A limit seat groove is provided at the port of the oil storage groove, and a threaded hole is provided at the bottom of the limit seat groove. A limit seat is positioned and installed in the limit seat groove by a positioning bolt. An primary piston and a support spring are installed in the oil storage groove. The two ends of the support spring are respectively abutted against the primary piston and the limit seat. An primary oil passage, a secondary oil passage, and a piston groove are provided on the main shaft. The two ends of the primary oil passage are respectively communicated with the oil storage groove and the piston groove. The secondary oil passage is communicated with the piston groove, and the port of the secondary oil passage corresponds to the port of the primary oil passage. The end of the secondary oil passage is located at the edge of the main shaft, and a lubricating oil hole is provided on the side of the secondary oil passage. A secondary piston is movably installed in the piston groove. The outer end of the secondary piston is hemispherical, and a return spring is connected to the inner end of the secondary piston. An oil guiding groove is provided on the side wall of the secondary piston, and the oil guiding groove is an annular groove opening.

[0007] Preferably, the adapter seat is composed of a first seat body and a second seat body. Both the first seat body and the second seat body are semi-circular tube structures. A primary bolt hole and a secondary bolt hole are respectively provided on the first seat body and the second seat body. The first seat body and the second seat body are positioned by bolts and nuts. Primary mounting grooves and secondary mounting grooves are respectively provided on the inner cavity side walls of the first seat body and the second seat body. Both the primary mounting groove and the secondary mounting groove are semi-circular ring grooves with a U-shaped cross-section, and the primary mounting groove and the secondary mounting groove are correspondingly arranged. An installation ring is fixedly installed in the primary mounting groove and the secondary mounting groove. A support seat is installed on the installation ring. The support seat is bullet-shaped, and the cross-section of the support seat matches the cross-sections of the primary mounting groove and the secondary mounting groove, and the support seat is completely immersed in the primary mounting groove.

[0008] Preferably, when the tip of the secondary piston abuts against the tip of the support seat, the oil guiding groove is aligned with the primary oil passage and the secondary oil passage. When the return spring is in the reset state, the oil guiding groove is misaligned with the primary oil passage and the secondary oil passage. When the support spring is in the reset state, the primary piston moves to the bottom of the oil storage groove.

[0009] Preferably, a countersunk screw hole is formed in the side wall of the piston groove, a limit screw is fixedly installed in the countersunk screw hole, a limit groove is formed in the side wall of the secondary piston, the screw cap of the limit screw is embedded in the limit groove, and when the return spring is in the return state, the screw cap of the limit screw abuts against the bottom of the limit groove.

[0010] Preferably, an oil injection channel is formed in the bottom of the oil storage tank, an oil injection port is arranged at the port of the oil injection channel, a sealing cover is screwed at the port of the oil injection port, a central hole is formed in the limit seat, a first-stage connecting ear is integrally formed at the outer end of the first-stage piston, a second-stage connecting ear is fixedly welded at the port of the limit cap, a pull rope is connected between the second-stage connecting ear and the first-stage connecting ear, the pull rope passes through the central hole and the support spring, and the pull rope is a spring wire.

[0011] Preferably, a guiding hole is formed in the support seat, the support seat is movably installed on the installation ring through the guiding hole, limiting plates are fixedly installed on both sides of the installation ring, stress springs are installed between the support seat and the limiting plates on the installation ring, when the secondary piston moves from the misaligned state to the tip of the secondary piston abuts against the tip of the support seat, the stress spring does not reach the maximum compression state, engaging grooves are formed in the bottoms of the first-stage installation groove and the second-stage installation groove, and when the installation ring is actually installed, the limiting plate is embedded in the engaging groove.

[0012] Preferably, a positioning groove is formed in the end face of the first seat body, a positioning protrusion is integrally formed on the end face of the second seat body, and when the first seat body and the second seat body are actually butted, the positioning protrusion is embedded in the positioning groove.

[0013] The using method of the block double-pin bracket for the auger drill is used to operate the above-mentioned block double-pin bracket for the auger drill. When the installation shaft rotates relative to the adapter seat and the tip of the secondary piston abuts against the tip of the support seat, the oil guiding groove communicates with the first-stage oil channel and the second-stage oil channel, so that under the action of the support spring, the first-stage piston is pushed, so that the lubricating oil in the oil storage tank flows through the first-stage oil channel, the oil guiding groove, the second-stage oil channel and the lubricating oil hole into the junction of the installation shaft and the adapter seat to form a self-lubricating effect.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting up a block-shaped double-pin bracket for a screw drill composed of a main board, a first connector, a second connector, and a bracket body, and setting the mounting shaft to be composed of a main shaft, a positioning seat, and a limit cap, and opening oil storage grooves on the main shaft, the positioning seat, and the limit cap, and arranging a primary piston and a support spring in the oil storage grooves, and opening a primary oil passage, a secondary oil passage, a piston groove, and a lubricating oil hole on the main shaft, and arranging a secondary piston in the piston groove, and opening an oil guide groove on the side wall of the secondary piston, so that the secondary piston acts and is stressed by the support seat on the adapter seat, and through the movement of the secondary piston, the oil guide groove is used to connect and disconnect the primary oil passage and the secondary oil passage, thereby realizing the self-lubricating effect of the lubricating oil on the junction of the mounting shaft and the adapter seat; 2. By opening a guide hole on the support seat, and movably installing the support seat on the mounting ring, and limiting the support seat through a set of stress springs, so that the support seat can float within a certain range, thus avoiding the tip of the secondary piston and the tip of the support seat always abutting against each other when the mounting shaft and the adapter seat are at a certain angle, which may cause excessive discharge of lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a bottom view of the main board of the present invention; Figure 3 is a connection schematic diagram of the first seat body and the second seat body of the present invention; Figure 4 is Figure 3 a schematic enlarged view of the structure at A in Figure 5 is a schematic structural diagram of the mounting ring of the present invention; Figure 6 is a schematic structural diagram of the support seat of the present invention; Figure 7 is a schematic structural diagram of the secondary piston of the present invention; Figure 8 is a schematic structural diagram of the mounting shaft of the present invention; Figure 9 is a half-sectional view of the main shaft of the present invention; Figure 10 is Figure 9 a schematic enlarged view of the structure at B in Figure 11 is Figure 9 a schematic enlarged view of the structure at C in Figure 12 is a connection schematic diagram of the mounting shaft of the present invention; Figure 13 is Figure 12 a schematic enlarged view of the structure at D in Figure 14 is Figure 12Schematic enlarged view of the structure at position E; Figure 15 Schematic diagram of the second seat body structure of the present invention; Figure 16 is Figure 15 Schematic enlarged view of the structure at position F; Figure 17 Schematic diagram of the first seat body structure of the present invention.

[0016] In the figure: main board 1, first connection seat 2, second connection seat 3, hinge seat 4, bracket body 5, adapter seat 6, drill rig 7, mounting shaft 8, frame 9, first-level mounting hole 10, second-level mounting hole 11, first seat body 12, second seat body 13, first-level mounting groove 14, second-level mounting groove 15, mounting ring 16, support seat 17, main shaft 18, positioning seat 19, limit cap 20, pin shaft hole 21, oil storage groove 22, limit seat groove 23, threaded hole 24, limit seat 25, positioning bolt 26, first-level piston 27, support spring 28, first-level oil passage 29, second-level oil passage 30, lubricating oil hole 31, piston groove 32, second-level piston 33, return spring 34, oil guiding groove 35, countersunk screw hole 36, limit screw 37, limit groove 38, oil injection oil passage 39, oil injection port 40, central hole 41, second-level connection ear 42, pull rope 43, guiding hole 44, limit plate 45, stress spring 46, engaging groove 47, first-level bolt hole 48, second-level bolt hole 49, bolt nut 50, alignment groove 51, alignment protrusion 52. Specific embodiments

[0017] In order to clearly and completely describe the purpose, technical solution of the present invention, and make the advantages more clear, the following further details the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0018] Please refer to Figures 1-17 , the present invention provides the following three preferred embodiments: Example 1. A block double-pin bracket for a screw drill, comprising a main board 1, a first connecting seat 2, a second connecting seat 3 and a bracket body 5. The main board 1 is a rectangular platform, and a hinge seat 4 is fixedly welded to the lower surface of the main board 1. A drill 7 is installed on the hinge seat 4 through a connecting member. A primary mounting hole 10 is provided on the first connecting seat 2, and a secondary mounting hole 11 is provided on the second connecting seat 3. The secondary mounting hole 11 is arranged corresponding to the primary mounting hole 10. The first connecting seat 2 and the second connecting seat 3 are rotatably mounted on a transfer seat 6 on a frame 9 through a mounting shaft 8. The bracket body 5 is fixedly connected to the lower surface of the main board 1, and the bracket body 5 is used to limit the drill 7. The primary mounting hole 10 is a regular hexagonal hole structure. The mounting shaft 8 is composed of a main shaft 18, a positioning seat 19 and a limit cap 20. The main shaft 18, the positioning seat 19 and the limit cap 20 are integrally formed. The size of the positioning seat 19 matches that of the primary mounting hole 10, and the size of the main shaft 18 matches that of the secondary mounting hole 11. When the mounting shaft 8 is actually installed, the positioning seat 19 is inserted into the primary mounting hole 10, and the main shaft 18 is inserted into the secondary mounting hole 11. A pin hole 21 is provided at the end of the main shaft 18, and the mounting shaft 8 is positioned by a positioning pin in the pin hole 21.

[0019] Oil storage grooves 22 are provided on the main shaft 18, the positioning seat 19 and the limit cap 20. A limit seat groove 23 is provided at the port of the oil storage groove 22, and a threaded hole 24 is provided at the bottom of the limit seat groove 23. A limit seat 25 is positioned and installed in the limit seat groove 23 through a positioning bolt 26. A primary piston 27 and a support spring 28 are installed in the oil storage groove 22. The two ends of the support spring 28 are respectively abutted against the primary piston 27 and the limit seat 25. A primary oil passage 29, a secondary oil passage 30 and a piston groove 32 are provided on the main shaft 18. The two ends of the primary oil passage 29 are respectively communicated with the oil storage groove 22 and the piston groove 32. The secondary oil passage 30 is communicated with the piston groove 32, and the port of the secondary oil passage 30 corresponds to the port of the primary oil passage 29. The end of the secondary oil passage 30 is located at the edge of the main shaft 18, and a lubricating oil hole 31 is provided on the side of the secondary oil passage 30. A secondary piston 33 is movably installed in the piston groove 32. The outer end of the secondary piston 33 is hemispherical, and the inner end of the secondary piston 33 is connected with a return spring 34. An oil guiding groove 35 is provided on the side wall of the secondary piston 33, and the oil guiding groove 35 is an annular groove opening.

[0020] The adapter 6 is composed of a first seat body 12 and a second seat body 13. Both the first seat body 12 and the second seat body 13 are semi-circular tube structures. A first-level bolt hole 48 and a second-level bolt hole 49 are respectively provided on the first seat body 12 and the second seat body 13. The first seat body 12 and the second seat body 13 are positioned by bolts and nuts 50. First-level installation grooves 14 and second-level installation grooves 15 are respectively provided on the inner cavity side walls of the first seat body 12 and the second seat body 13. Both the first-level installation grooves 14 and the second-level installation grooves 15 are semi-circular ring grooves with a U-shaped cross-section, and the first-level installation grooves 14 and the second-level installation grooves 15 are arranged corresponding to each other. An installation ring 16 is fixedly installed in the first-level installation grooves 14 and the second-level installation grooves 15. A support seat 17 is installed on the installation ring 16. The support seat 17 is arranged in a bullet shape, and the cross-section of the support seat 17 matches the cross-sections of the first-level installation grooves 14 and the second-level installation grooves 15, and the support seat 17 is completely immersed in the first-level installation grooves 14. When the tip of the second-level piston 33 abuts against the tip of the support seat 17, the oil guide groove 35 is aligned with the first-level oil passage 29 and the second-level oil passage 30. When the return spring 34 is in the reset state, the oil guide groove 35 is arranged in a dislocation manner with the first-level oil passage 29 and the second-level oil passage 30. When the support spring 28 is in the reset state, the first-level piston 27 moves to the bottom of the oil storage groove 22.

[0021] A countersunk screw hole 36 is provided on the side wall of the piston groove 32. A limit screw 37 is fixedly installed in the countersunk screw hole 36. A limit groove 38 is provided on the side wall of the second-level piston 33. The screw cap of the limit screw 37 is embedded in the limit groove 38. When the return spring 34 is in the reset state, the screw cap of the limit screw 37 abuts against the bottom of the limit groove 38. By providing a block double-pin bracket for a helical drill composed of a main board 1, a first connecting seat 2, a second connecting seat 3 and a bracket body 5, and setting the installation shaft 8 to be composed of a main shaft 18, a positioning seat 19 and a limit cap 20, and providing an oil storage groove 22 on the main shaft 18, the positioning seat 19 and the limit cap 20, and providing a first-level piston 27 and a support spring 28 in the oil storage groove 22, and providing a first-level oil passage 29, a second-level oil passage 30, a piston groove 32 and a lubricating oil hole 31 on the main shaft 18, and providing a second-level piston 33 in the piston groove 32, and providing an oil guide groove 35 on the side wall of the second-level piston 33, so that the second-level piston 33 acts and is stressed by the support seat 17 on the adapter 6, and thus through the movement of the second-level piston 33, the oil guide groove 35 can be made to connect and disconnect the first-level oil passage 29 and the second-level oil passage 30, so as to realize the self-lubricating effect of the lubricating oil on the junction of the installation shaft 8 and the adapter 6.

[0022] An oil injection channel 39 is provided at the bottom of the oil storage tank 22. An oil injection port 40 is provided at the port of the oil injection channel 39. A sealing cap is screwed onto the port of the oil injection port 40. A central hole 41 is provided on the limit seat 25. An integral first - level connecting ear is formed on the outer end of the first - level piston 27. A second - level connecting ear 42 is fixedly welded to the port of the limit cap 20. A pull rope 43 is connected between the second - level connecting ear 42 and the first - level connecting ear. The pull rope 43 passes through the central hole 41 and the support spring 28. The pull rope 43 is a spring wire. The setting of the pull rope 43 can facilitate the replenishment of lubricating oil in the oil storage tank 22.

[0023] Embodiment 2: On the basis of Embodiment 1, a guiding hole 44 is provided on the support seat 17. The support seat 17 is movably installed on the mounting ring 16 through the guiding hole 44. Limit plates 45 are fixedly installed on both sides of the mounting ring 16. Force - receiving springs 46 are installed between the support seat 17 and the limit plates 45 on the mounting ring 16. When the second - level piston 33 moves from the misaligned state to the tip of the second - level piston 33 abuts against the tip of the support seat 17, the force - receiving spring 46 does not reach the maximum compression state. By providing a guiding hole 44 on the support seat 17, movably installing the support seat 17 on the mounting ring 16, and limiting the support seat 17 through a set of force - receiving springs 46, the support seat 17 can float within a certain range of motion, thus avoiding the situation where when the installation shaft 8 and the adapter seat 6 are at a certain angle, the tip of the second - level piston 33 and the tip of the support seat 17 always abut against each other, resulting in excessive discharge of lubricating oil. Engaging grooves 47 are provided at the bottoms of the first - level installation groove 14 and the second - level installation groove 15. During the actual installation of the mounting ring 16, the limit plates 45 are embedded in the engaging grooves 47. The setting of the engaging grooves 47 can facilitate the positioning and installation of the mounting ring 16.

[0024] A positioning groove 51 is provided on the end face of the first seat body 12. A positioning protrusion 52 is integrally formed on the end face of the second seat body 13. When the first seat body 12 and the second seat body 13 are actually butted, the positioning protrusion 52 is embedded in the positioning groove 51. Through the setting of the positioning protrusion 52 and the positioning groove 51, it is convenient for the first seat body 12 and the second seat body 13 to be positioned.

[0025] Embodiment 3: On the basis of Embodiment 2, the usage method of the block - type double - pin bracket for the auger. The usage method of the block - type double - pin bracket for the auger is used to operate the above - mentioned block - type double - pin bracket for the auger. When the installation shaft 8 and the adapter seat 6 rotate relative to each other, and when the tip of the second - level piston 33 abuts against the tip of the support seat 17, the oil - guiding groove 35 forms a connection between the first - level oil channel 29 and the second - level oil channel 30. Thus, under the action of the support spring 28, the first - level piston 27 is pushed, so that the lubricating oil in the oil storage tank 22 flows through the first - level oil channel 29, the oil - guiding groove 35, the second - level oil channel 30, and the lubricating oil hole 31 into the junction of the installation shaft 8 and the adapter seat 6 to form a self - lubricating effect.

[0026] Although the above-described illustrative specific embodiments of the present application have been described to enable those skilled in the art to understand the present application, the present application is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present application defined and determined by the appended claims, all applications and creations using the concept of the present application are within the scope of protection.

Claims

1. Block double pin bracket for spiral drilling machine, characterized by: include: A main board (1), the main board (1) being a rectangular platform, and a hinge seat (4) is fixedly welded to the lower surface of the main board (1), and a drilling machine (7) is mounted on the hinge seat (4) via a connecting piece; A first connecting seat (2), wherein the first connecting seat (2) is provided with a primary mounting hole (10); A second connecting seat (3), wherein the second connecting seat (3) is provided with a secondary mounting hole (11), wherein the secondary mounting hole (11) is arranged corresponding to the primary mounting hole (10), and the first connecting seat (2) and the second connecting seat (3) are rotatably mounted on a transfer seat (6) on the frame (9) via a mounting shaft (8); A bracket body (5), the bracket body (5) being fixedly connected to the lower surface of the main board (1), and the bracket body (5) being used to limit the position of the drilling rig (7); The primary mounting hole (10) is a regular hexagonal hole structure, and the mounting shaft (8) is composed of a main shaft (18), a positioning seat (19) and a limiting cap (20); The main shaft (18), the positioning seat (19) and the limiting cap (20) are provided with an oil storage groove (22); the main shaft (18) is provided with a primary oil passage (29), a secondary oil passage (30) and a piston groove (32); the end of the secondary oil passage (30) is located at the edge of the main shaft (18), and a lubricating oil hole (31) is provided on the side of the secondary oil passage (30).

2. The block-shaped double-pin bracket for an auger drill according to claim 1, characterized in that: The main shaft (18), the positioning seat (19) and the limiting cap (20) are integrally formed; the size of the positioning seat (19) matches the size of the primary mounting hole (10); the size of the main shaft (18) matches the size of the secondary mounting hole (11); when the mounting shaft (8) is actually installed, the positioning seat (19) is inserted into the primary mounting hole (10); the main shaft (18) is inserted into the secondary mounting hole (11); a pin hole (21) is provided at the end of the main shaft (18); and the mounting shaft (8) is positioned by a positioning pin in the pin hole (21).

3. The block-shaped double-pin bracket for an auger drill according to claim 2, characterized in that: The port of the oil storage groove (22) is provided with a limit seat groove (23), the bottom of the limit seat groove (23) is provided with a threaded hole (24), a limit seat (25) is positioned and installed in the limit seat groove (23) by means of a positioning bolt (26), a primary piston (27) and a support spring (28) are installed in the oil storage groove (22), two ends of the support spring (28) are respectively against the primary piston (27) and the limit seat (25), and two ends of the primary oil passage (29) are respectively against the oil storage groove (22). ), the piston groove (32), the secondary oil passage (30) is connected to the piston groove (32), and the port of the secondary oil passage (30) corresponds to the port of the primary oil passage (29), a secondary piston (33) is movably mounted in the piston groove (32), the outer end of the secondary piston (33) is hemispherical, and the inner end of the secondary piston (33) is connected to a return spring (34), and an oil guide groove (35) is opened on the side wall of the secondary piston (33), and the oil guide groove (35) is an annular groove.

4. The block-shaped double-pin bracket for an auger drill according to claim 3, characterized in that: The adapter seat (6) is composed of a first seat body (12) and a second seat body (13), the first seat body (12) and the second seat body (13) are both semi-circular tube structures, and the first seat body (12) and the second seat body (13) are respectively provided with a primary bolt hole (48) and a secondary bolt hole (49), the first seat body (12) and the second seat body (13) are positioned by bolts and nuts (50), the inner cavity side walls of the first seat body (12) and the second seat body (13) are respectively provided with a primary installation groove (14) and a secondary installation groove (15), the primary installation groove (15) and the secondary installation groove (16) are respectively provided with a primary installation groove (16) and a ... The groove (14) and the secondary mounting groove (15) are both semicircular ring grooves with U-shaped cross-sections, and the primary mounting groove (14) and the secondary mounting groove (15) are arranged correspondingly, and a mounting ring (16) is fixedly installed in the primary mounting groove (14) and the secondary mounting groove (15), and a support seat (17) is installed on the mounting ring (16), and the support seat (17) is arranged in a bullet shape, and the cross-section of the support seat (17) matches the cross-section of the primary mounting groove (14) and the secondary mounting groove (15), and the support seat (17) is completely immersed in the primary mounting groove (14).

5. The block-shaped double-pin bracket for an auger drill according to claim 4, characterized in that: When the tip of the secondary piston (33) abuts against the tip of the support seat (17), the oil guide groove (35) is aligned with the primary oil passage (29) and the secondary oil passage (30); when the return spring (34) is in a return state, the oil guide groove (35) is staggered with the primary oil passage (29) and the secondary oil passage (30); when the support spring (28) is in a return state, the primary piston (27) moves to the bottom of the oil storage groove (22).

6. The block-shaped double-pin bracket for an auger drill according to claim 5, characterized in that: A countersunk screw hole (36) is provided on the side wall of the piston groove (32), a limit screw (37) is fixedly installed in the countersunk screw hole (36), a limit groove (38) is provided on the side wall of the secondary piston (33), the nut of the limit screw (37) is embedded in the limit groove (38), and when the reset spring (34) is in the reset state, the nut of the limit screw (37) is against the bottom of the limit groove (38).

7. The block-shaped double-pin bracket for an auger drill according to claim 6, characterized in that: The bottom of the oil storage tank (22) is provided with an oil filling passage (39), the port of the oil filling passage (39) is provided with an oil filling port (40), the port of the oil filling port (40) is screwed with a sealing cap, a center hole (41) is provided on the limit seat (25), a first-stage connecting ear is integrally formed at the outer end of the first-stage piston (27), a second-stage connecting ear (42) is fixedly welded to the port of the limit cap (20), a pull rope (43) is connected between the second-stage connecting ear (42) and the first-stage connecting ear, the pull rope (43) passes through the center hole (41) and the support spring (28), and the pull rope (43) is a spring wire.

8. The block-shaped double-pin bracket for an auger drill according to claim 7, characterized in that: The support seat (17) is provided with a guide hole (44), and the support seat (17) is movably mounted on the mounting ring (16) through the guide hole (44). Limiting plates (45) are fixedly mounted on both sides of the mounting ring (16), and force springs (46) are mounted on the mounting ring (16) between the support seat (17) and the limiting plates (45). When the secondary piston (33) and the support seat (17) move from a dislocated state to a state where the tip of the secondary piston (33) abuts against the tip of the support seat (17), the force spring (46) does not reach a maximum compression state. The bottoms of the primary mounting groove (14) and the secondary mounting groove (15) are provided with engaging grooves (47), and when the mounting ring (16) is actually mounted, the limiting plates (45) are embedded in the engaging grooves (47).

9. The block-shaped double-pin bracket for an auger drill according to claim 8, characterized in that: The end surface of the first seat body (12) is provided with an alignment groove (51), and the end surface of the second seat body (13) is integrally formed with an alignment protrusion (52); when the first seat body (12) and the second seat body (13) are actually butt-jointed, the alignment protrusion (52) is embedded in the alignment groove (51).

10. The method for using the block double pin bracket for the spiral drilling machine is characterized by: The method for using the block-shaped double-pin bracket for an auger drill is used to operate any one of the block-shaped double-pin bracket for an auger drill according to claims 8-9. When the mounting shaft (8) and the adapter seat (6) rotate relative to each other, and the tip of the secondary piston (33) abuts against the tip of the support seat (17), the oil guide groove (35) connects the primary oil channel (29) and the secondary oil channel (30), thereby pushing the primary piston (27) under the action of the support spring (28), so that the lubricating oil in the oil storage tank (22) flows through the primary oil channel (29), the oil guide groove (35), the secondary oil channel (30), and the lubricating oil hole (31) into the junction of the mounting shaft (8) and the adapter seat (6) to form a self-lubricating effect.

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