A special alloy drilling system for underground exploration

Abstract

The present invention is applicable to the technical field of geological exploration, and provides an alloy drilling system dedicated to underground exploration, comprising an alloy drilling pipe and a U-shaped mounting frame rotatably sleeved on the outer surface of the alloy drilling pipe, wherein the lower surface of the alloy drilling pipe is provided with a plurality of mounting grooves respectively extending to the inner and outer surfaces of the alloy drilling pipe, a drill bit housing is arranged in the mounting groove, a drill bit assembly is arranged on the lower side of the drill bit housing, a transmission assembly for controlling the rotation of the drill bit housing and the drill bit assembly is arranged on the drill bit housing, the transmission assembly comprises two transmission shafts, and the two transmission shafts are respectively arranged on the opposite two side surfaces of the drill bit housing, and the other end of the transmission shaft is rotatably connected to the inner wall of the mounting groove. When sampling is required, the present invention can rotate the drill bit assembly into a horizontal state to cut the bottom of the sample core, and no other equipment is required to cut the sample core, thereby improving the efficiency of extracting the sample core during underground exploration.

Description

Technical Field

[0001] The present invention relates to the technical field of geological exploration, and more specifically, to an alloy drilling system specially used for underground exploration. Background Art

[0002] Drilling refers to an exploration method that uses a drilling rig to drill holes in the strata to identify and divide the subsurface strata and take samples along the depth of the hole. Drilling is the most widely used exploration method in engineering geological surveys, and it can obtain deep geological data.

[0003] For example, the existing public patent: CN117759185B discloses a geological exploration drilling system. When the whole sample core needs to be lifted and discharged, the interior of each clamp bag is sufficiently inflated until the feedback of the air pressure probe reaches the set threshold value. When the feedback of the air pressure probe reaches the set threshold value, the drilled sample core is then stably clamped. After the drilled sample core is stably clamped, the lifting assembly lifts the drilled whole sample core along with the drill barrel and transports it to the designated sample discharge position. After that, the gas inside the clamp bag is emptied again, and the drilled whole sample core is automatically discharged under the action of gravity.

[0004] However, the inventors believe that the sample core extraction method in the prior art has the following problems: when the drilling pipe in the prior art is drilled into the ground, since the airbag is arranged on the inner side of the drilling pipe, it is inevitable that the surface of the airbag will be worn or even damaged, thereby affecting the clamping effect of the sample core. When the drilling pipe is extracted upward, the sample core will fall off. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention aims to provide a special alloy drilling system for underground exploration.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A special alloy drilling system for underground exploration, comprising an alloy drilling pipe and a U-shaped mounting frame rotatably mounted on the outer surface of the alloy drilling pipe, wherein the lower surface of the alloy drilling pipe is provided with a plurality of mounting grooves extending respectively to the inner and outer surfaces of the alloy drilling pipe, and the plurality of mounting grooves are arranged in a circular array on the lower side of the alloy drilling pipe, a drill bit housing is arranged in the mounting groove, a drill bit assembly is arranged on the lower side of the drill bit housing, a shielding assembly for shielding the inner side of the drill bit housing is arranged in the mounting groove, a transmission assembly for controlling the rotation of the drill bit housing and the drill bit assembly is arranged on the drill bit housing, and the transmission assembly comprises two transmission shafts, which are respectively arranged on the opposite side surfaces of the drill bit housing, and the other end of the transmission shaft is rotatably connected to the inner wall of the mounting groove.

[0008] The present invention is further configured as follows: a driving motor is arranged on the outer surface of one side of the U-shaped mounting frame, the output shaft of the driving motor rotates and passes through the vertical plate of the U-shaped mounting frame, a second bevel gear is arranged on one end of the output shaft of the driving motor passing through the vertical plate of the U-shaped mounting frame, and a first bevel gear meshingly connected to the second bevel gear is sleeved on the outer surface of the alloy drilling pipe near the second bevel gear.

[0009] The present invention is further configured as follows: a plurality of transmission cavities are opened on the lower side of the alloy drilling pipe, the transmission cavity is arranged on a side close to the mounting groove, one end of the transmission shaft close to the side of the transmission cavity rotates and passes through the transmission cavity, a worm gear is sleeved on the outer surface of one end of the transmission shaft located in the transmission cavity, the bottom wall of the transmission cavity is rotatably connected with the worm gear and meshedly connected with the worm, a driving shaft is arranged on the upper surface of the worm, the upper end of the driving shaft rotates and passes through the upper surface of the alloy drilling pipe, a driving gear is sleeved on the outer surface of one end of the driving shaft located outside the alloy drilling pipe, an electric push rod is arranged on the outer surface of a side of the U-shaped mounting frame away from the driving motor, one end of the telescopic rod of the electric push rod slides and passes through the vertical plate of the U-shaped mounting frame, and an arc plate is arranged on the end of the telescopic rod of the electric push rod passing through the U-shaped mounting frame, and teeth meshedly connected with the driving gear are arranged on the inner side of the arc plate facing the driving gear.

[0010] The present invention is further configured as follows: a plurality of knocking cavities rotatably sleeved on the outer surface of the driving shaft are opened in the alloy drilling pipe, a rotating shaft is rotatably connected to the inner wall of the knocking cavity close to the inner side surface of the alloy drilling pipe, a swing plate is arranged on the lower surface of the rotating shaft, a knocking ball for knocking the inner wall of the knocking cavity is arranged on the lower side of the swing plate, and a cam contacting the upper side of the swing plate is sleeved on the outer surface of one end of the driving shaft located in the knocking cavity.

[0011] The present invention is further configured as follows: the shielding assembly includes a baffle, which is arranged in the mounting groove and slides in contact with the inner wall of the mounting groove, the inner side surface of the baffle is flush with the inner side surface of the alloy drilling pipe, and a plurality of contraction cavities are provided in the alloy drilling pipe, which are respectively located directly above the mounting grooves. The upper side of the baffle slides through the contraction cavity, and a connecting slide rod is provided on the top wall of the contraction cavity. A built-in cavity is provided in the baffle, and the lower end of the connecting slide rod slides through the built-in cavity. A built-in plate that slides in the built-in cavity is provided at one end of the connecting slide rod located in the built-in cavity, and a first tension spring movably sleeved on the outer surface of the connecting slide rod is provided between the built-in plate and the top wall of the built-in cavity.

[0012] The present invention is further configured as follows: the drill bit assembly includes an internal block and an external drill bit, the internal block is arranged on the upper side of the external drill bit, the upper side of the internal block slides through the drill bit housing, an extension assembly for controlling the extension of the drill bit assembly is arranged on the drill bit housing, the extension assembly includes a push rod, the push rod is arranged on a side surface of the internal block located in the drill bit housing, the other end of the push rod slides through the upper surface of the drill bit housing, a second tension spring movably sleeved on the outer surface of the push rod is arranged between the internal block and the top wall of the drill bit housing, a U-shaped wheel frame is arranged on the upper end of the push rod, and a pulley is rotatably connected between the two vertical plates of the U-shaped wheel frame.

[0013] The present invention is further configured as follows: a movable shaft is arranged on the surface of one side of the external drill bit facing the built-in block, a control cavity is opened in the built-in block, the upper end of the movable shaft rotates and penetrates into the control cavity, one end of the movable shaft located in the control cavity is sleeved with a control gear, one side of the control gear is meshedly connected with a control rack, a guide rail is arranged on the bottom wall of the control cavity, and a guide rail joint slidably connected to the guide rail is arranged on the lower side of the control rack.

[0014] The present invention is further configured as follows: a screw is rotatably connected to the bottom wall of the control chamber, a threaded sleeve is provided on the threaded sleeve of the outer surface of the screw, a control rotating plate is hinged between the outer surface of the threaded sleeve and the upper surface of the control rack, a control rod is provided at the upper end of the screw, the upper end of the control rod rotates to pass through the upper surface of the built-in block and extends into the drill bit housing, a stationary rod with one end that rotates and passes into the transmission chamber and is connected to the inner wall of the transmission chamber, the transmission shaft is rotatably sleeved on the outer surface of the stationary rod, a face gear is provided at one end of the stationary rod located in the drill bit housing, a mounting shaft that is rotatably connected to the top wall of the drill bit housing and is in the same vertical position as the control rod, and a movable gear meshing with the face gear is sleeved on the outer surface of the mounting shaft.

[0015] The present invention is further configured as follows: an extension groove is provided on the upper surface of the control rod, the lower end of the mounting shaft extends into the extension groove and slides in the extension groove, a limiting slide groove is provided on the inner wall of the extension groove and extends out of the upper surface of the control rod, and a limiting slide block adapted to the limiting slide groove is provided on the outer surface of the mounting shaft, and the limiting slide block slides in the limiting slide groove.

[0016] The present invention is further configured as follows: the external drill bit includes a diamond inner core for increasing hardness, a tungsten carbide alloy layer for increasing wear resistance, and a TISIN coating for increasing high-temperature strength, the tungsten carbide alloy layer is wrapped around the outside of the diamond inner core, and the TISIN coating is formed on the surface of the tungsten carbide alloy layer using multi-arc ion plating technology.

[0017] The advantages of the present invention are:

[0018] Firstly, the present invention provides a rotatable drill bit assembly, so when sampling is needed, the drill bit assembly rotated into a horizontal shape can cut the bottom of the sample core, and no other equipment is needed to cut the sample core, thereby improving the efficiency of extracting sample cores during underground exploration. At the same time, when the alloy drilling pipe extracts the sample core upward, the drill bit assembly rotated into a horizontal shape and the drill bit housing can form a supporting effect on the bottom of the sample core, and try to avoid the problem of the sample core in the alloy drilling pipe falling off when the alloy drilling pipe is vertically displaced upward. There is a big difference from the airbag clamping of the prior art, and there is no need to worry about the problem of damage to the airbag, thereby ensuring the stability of the sample core during extraction.

[0019] Secondly, the present invention is provided with structures such as a knocking cavity and a knocking ball. Therefore, when the drill bit housing and the drill bit assembly rotate, the knocking ball can knock on the inner wall of the knocking cavity. The knocking of the knocking ball can better separate the sample core from the inner wall of the alloy drilling pipe, thereby avoiding the problem of the sample core in the alloy drilling pipe slipping out as much as possible, and ensuring the efficiency and speed of removing the sample core.

[0020] Thirdly, the present invention avoids the overflow of the sample core in the alloy drilling pipe through the installation groove as much as possible by providing a shielding component, thereby ensuring the stability of the sample core extraction.

[0021] Fourthly, the present invention provides an extension assembly, so when the drill bit assembly is rotated into a horizontal state, the drill bit assembly can be extended, thereby increasing the cutting range of the external drill bit on the bottom of the sample core, avoiding the problem of unsatisfactory cutting effect at the bottom of the sample core as much as possible, and ensuring the efficiency of geological core sampling.

[0022] Fifth, the present invention provides a steerable external drill bit, so when the drill bit assembly rotates to a horizontal state, the external drill bit is automatically controlled to rotate 180 degrees, thereby avoiding as much as possible the problem that the cutting surface of the external drill bit cannot cut the bottom of the sample core when the alloy drilling pipe is reversed, thereby ensuring the cutting effect on the bottom of the sample core and also ensuring the service life of the external drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural schematic diagram of an alloy drilling system for underground exploration according to the present invention;

[0024] Figure 2 It is a partial cross-sectional schematic diagram of the bottom of the alloy drilling pipe of the present invention;

[0025] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0026] Figure 4 It is a partial front plan view of the bottom of the alloy drilling pipe of the present invention;

[0027] Figure 5is a cross-sectional schematic diagram of a drill bit housing of the present invention;

[0028] Figure 6 It is a side plan view of the internal structure of the built-in block of the present invention;

[0029] Figure 7 for Figure 5 Enlarged view of point B in the middle;

[0030] Figure 8 It is a front plan view of the internal structure of the striking chamber of the present invention;

[0031] Fig. 9 It is a structural plan view of the external drill bit of the present invention.

[0032] In the figure: 1, alloy drilling pipe; 2, U-shaped mounting frame; 3, mounting groove; 31, baffle; 32, contraction cavity; 33, connecting slide rod; 34, built-in cavity; 35, built-in plate; 36, first tension spring;

[0033] 4. Drill bit housing;

[0034] 5. Drill bit assembly; 51. Internal block; 52. External drill bit; 521. Diamond inner core; 522. Tungsten carbide alloy layer; 523. TISIN coating; 53. Active shaft; 54. Control chamber; 55. Control gear; 56. Control rack; 57. Guide rail; 58. Screw; 59. Threaded sleeve; 510. Control turn plate; 511. Control rod; 512. Stationary rod; 513. Face gear; 514. Mounting shaft; 515. Active gear; 516. Extension groove; 517. Limit slider; 518. Limit slide groove;

[0035] 6. Driving motor; 7. First bevel gear; 8. Second bevel gear;

[0036] 9. Transmission assembly; 91. Transmission shaft; 92. Transmission chamber; 93. Worm gear; 94. Worm; 95. Drive shaft; 951. Knocking chamber; 952. Cam; 953. Rotating shaft; 954. Swinging plate; 955. Knocking ball;

[0037] 96. driving gear; 97. electric push rod; 98. arc plate;

[0038] 10. Extension assembly; 101. Push rod; 102. U-shaped wheel frame; 103. Pulley; 104. Second tension spring. DETAILED DESCRIPTION

[0039] See also Figure 1-9 , the present invention provides the following technical solutions:

[0040] Specifically, it refers to an alloy drilling system for underground exploration, including an alloy drilling pipe 1 and a U-shaped mounting frame 2 rotatably sleeved on the outer surface of the alloy drilling pipe 1, threaded sleeves connected to a screw lifting module are arranged on both sides of the U-shaped mounting frame 2, and the screw lifting module is a known technology in the existing patent: CN117759185B, which will not be described in detail here. A plurality of mounting grooves 3 extending to the inner and outer surfaces of the alloy drilling pipe 1 are opened on the lower surface of the alloy drilling pipe 1, and a plurality of mounting grooves 3 are arranged on the lower side of the alloy drilling pipe 1 in a circular array, a drill bit housing 4 is arranged in the mounting groove 3, and a drill bit assembly 5 for cutting the soil layer is arranged on the lower side of the drill bit housing 4, and the U-shaped mounting frame 2 is provided with a plurality of mounting grooves 3 extending to the inner and outer surfaces of the alloy drilling pipe 1, and a plurality of mounting grooves 3 are arranged on the lower side of the alloy drilling pipe 1 in a circular array, and a drill bit housing 4 is arranged in the mounting groove 3, and a drill bit assembly 5 for cutting the soil layer is arranged on the lower side of the drill bit housing 4, and the U-shaped mounting frame 2 is provided with a plurality of mounting grooves 3 extending to the inner and outer surfaces of the alloy drilling pipe 1, and a plurality of mounting grooves 3 are provided on the lower side of the alloy drilling pipe 1 in a circular array, and a drill bit housing 4 is arranged in the mounting groove 3, and a drill bit assembly 5 for cutting the soil layer is arranged on the lower side of the drill bit housing 4, and the U-shaped mounting frame 2 is provided with a plurality of mounting grooves 3 extending to the inner and outer surfaces of the alloy drilling pipe 1, and ... A driving motor 6 is arranged on the outer surface of one side of the frame 2, and the output shaft of the driving motor 6 rotates and passes through the vertical plate of the U-shaped mounting frame 2. A second bevel gear 8 is arranged on one end of the output shaft of the driving motor 6 passing through the vertical plate of the U-shaped mounting frame 2, and a first bevel gear 7 meshing with the second bevel gear 8 is sleeved on the outer surface of the alloy drilling pipe 1 near the second bevel gear 8. When in use, by starting the driving motor 6, the output shaft of the driving motor 6 synchronously drives the second bevel gear 8 to rotate synchronously, so that the second bevel gear 8 meshes and drives the first bevel gear 7 to rotate, and the alloy drilling pipe 1 rotates synchronously, so that the drill bit assembly 5 can cut the ground and drill the alloy drilling pipe 1 into the ground, thereby drilling a sample core in the exploration area.

[0041] A transmission assembly 9 for controlling the rotation of the drill bit housing 4 and the drill bit assembly 5 is provided on the drill bit housing 4. The transmission assembly 9 includes two transmission shafts 91, which are respectively arranged on opposite side surfaces of the drill bit housing 4. The other end of the transmission shaft 91 is rotatably connected to the inner wall of the mounting groove 3. Therefore, the drill bit housing 4 can rotate inward with the transmission shaft 91 as the rotation point and rotate to a horizontal state. Therefore, when the alloy drilling pipe 1 is rotating, the drill bit assembly 5 rotated into a horizontal state can cut the bottom of the sample core, and no other equipment is required to cut the sample core, thereby improving the efficiency of extracting the sample core during underground exploration. At the same time, when the alloy drilling pipe 1 extracts the sample core upward, the drill bit assembly 5 rotated into a horizontal state and the drill bit housing 4 can form a supporting effect on the bottom of the sample core, thereby minimizing the problem of the sample core in the alloy drilling pipe 1 falling off when the alloy drilling pipe 1 is vertically displaced upward, thereby ensuring the stability of the sample core during extraction.

[0042] A plurality of transmission chambers 92 are provided on the lower side of the alloy drilling pipe 1. The transmission chamber 92 is arranged on a side close to the mounting groove 3. One end of a transmission shaft 91 close to the transmission chamber 92 rotates and penetrates into the transmission chamber 92. A worm gear 93 is sleeved on the outer surface of one end of the transmission shaft 91 located in the transmission chamber 92. The bottom wall of the transmission chamber 92 is rotatably connected to the worm gear 93 and meshedly connected to a worm 94. A driving shaft 95 is provided on the upper surface of the worm 94. The upper end of the driving shaft 95 rotates and penetrates out of the upper surface of the alloy drilling pipe 1. The driving shaft 95 is located on the outer surface of one end outside the alloy drilling pipe 1. The face sleeve is provided with a driving gear 96, and an electric push rod 97 is provided on the outer surface of the side of the U-shaped mounting frame 2 away from the driving motor 6. One end of the telescopic rod of the electric push rod 97 slides through the vertical plate of the U-shaped mounting frame 2, and an arc plate 98 is provided on the end of the telescopic rod of the electric push rod 97 that passes through the U-shaped mounting frame 2. The inner side of the arc plate 98 facing the driving gear 96 is provided with teeth meshing with the driving gear 96. When the alloy drilling pipe 1 drills to the specified position, the electric push rod 97 starts and pushes the arc plate 98 to move toward the side close to the driving gear 96 until the arc plate 98 is moved. When the driving gear 96 is displaced to a position where it can mesh with the driving gear 96, the alloy drilling pipe 1 is controlled to reverse one circle. In this way, during the rotation process, the driving gear 96 meshes with the teeth on the arc plate 98, so that the driving gear 96 synchronously drives the driving shaft 95 to rotate, so that the worm 94 rotates synchronously, and the transmission shaft 91 rotates synchronously under the drive of the worm gear 93, so that the drill housing 4 and the drill assembly 5 rotate inwardly. When the driving gear 96 moves out of the arc plate 98, the drill housing 4 and the drill assembly 5 rotate inwardly by 90 degrees to be horizontal, and the electric push rod 97 starts The arc plate 98 is pulled to move toward the side away from the driving gear 96. When the alloy drilling pipe 1 extracts the sample core vertically upward, the electric push rod 97 pushes the arc plate 98 to move toward the side close to the driving gear 96 again. At this time, the alloy drilling pipe 1 is controlled to rotate forward, so that the drill bit housing 4 and the drill bit assembly 5 rotate outward by ninety degrees to be vertical. Therefore, the sample core in the alloy drilling pipe 1 falls under the action of inertia. Through the above structure, the drill bit housing 4 and the drill bit assembly 5 can be controlled to rotate accordingly according to the forward or reverse rotation of the alloy drilling pipe 1, which is simple to operate and easy to use.

[0043] The alloy drilling pipe 1 is provided with a plurality of knocking cavities 951 rotatably sleeved on the outer surface of the driving shaft 95. The knocking cavity 951 is rotatably connected to the inner wall of the inner side of the alloy drilling pipe 1 with a rotating shaft 953. The lower surface of the rotating shaft 953 is provided with a swing plate 954. The lower side of the swing plate 954 is provided with a knocking ball 955 for knocking the inner wall of the knocking cavity 951. The outer surface of one end of the driving shaft 95 located in the knocking cavity 951 is sleeved with a cam 952 in contact with the upper side of the swing plate 954. Therefore, when the driving shaft 95 rotates, the cam 952 moves along with the driving shaft 95. The shaft 95 rotates synchronously, so that the cam 952 can form a thrust on the swing plate 954, so that the swing plate 954 drives the knocking ball 955 to knock on the inner wall of the inner side of the alloy drilling pipe 1. Since the driving shaft 95 will only rotate when controlling the rotation of the drill bit housing 4 and the drill bit assembly 5, when the sample core is extracted vertically upward, the knocking of the knocking ball 955 can better separate the sample core from the inner wall of the alloy drilling pipe 1, thereby avoiding the problem of the sample core in the alloy drilling pipe 1 slipping off and ensuring the efficiency and speed of the sample core removal.

[0044] In the present invention, the rotation of the drill housing 4 and the drill assembly 5 is based on a worm gear transmission. Since the worm gear transmission has a self-locking effect, the drill housing 4 and the drill assembly 5 will not rotate on their own during use, thereby ensuring the stability of the device during use.

[0045] A shielding assembly for shielding the inner side of the drill bit housing 4 is provided in the mounting groove 3, and the shielding assembly includes a baffle plate 31, which is arranged in the mounting groove 3 and slides in contact with the inner wall of the mounting groove 3. A plurality of contraction cavities 32 are provided in the alloy drilling pipe 1, which are respectively located directly above the mounting groove 3. The upper side of the baffle plate 31 slides through the contraction cavity 32, and a connecting slide bar 33 is provided on the top wall of the contraction cavity 32. A built-in cavity 34 is provided in the baffle plate 31, and the lower end of the connecting slide bar 33 slides through the built-in cavity 34. A built-in plate 35 sliding in the built-in cavity 34 is provided at one end of the connecting slide bar 33 located in the built-in cavity 34, and a first tension spring 36 movably sleeved on the outer surface of the connecting slide bar 33 is provided between the built-in plate 35 and the top wall of the built-in cavity 34. When the first tension spring 36 is not subjected to tension, When the drill bit housing 4 is in the process of being moved inward, the drill bit housing 4 contacts the lower side of the baffle plate 31 and squeezes the baffle plate 31, causing the baffle plate 31 to move upward and gradually move into the contraction chamber 32. At the same time, the first tension spring 36 is stretched by the force. When the drill bit housing 4 is rotated outward, the drill bit housing 4 no longer squeezes the baffle plate 31, so that the baffle plate 31 moves to the initial position under the pull of the first tension spring 36, so that the baffle plate 31 can continuously block the inner side of the mounting groove 3.

[0046] The drill bit assembly 5 includes an internal block 51 and an external drill bit 52. The internal block 51 is arranged on the upper side of the external drill bit 52. The upper side of the internal block 51 slides through the drill bit housing 4. The drill bit housing 4 is provided with an extension assembly 10 for controlling the extension of the drill bit assembly 5. The extension assembly 10 includes a push rod 101. The push rod 101 is arranged on a side surface of the internal block 51 located in the drill bit housing 4. The other end of the push rod 101 slides through the upper surface of the drill bit housing 4. A second tension spring 104 movably sleeved on the outer surface of the push rod 101 is provided between the internal block 51 and the top wall of the drill bit housing 4. When the second tension spring 104 is not affected by the tension force, the second tension spring 104 will form a tension force on the internal block 51, so that most of the internal block 51 is displaced into the drill bit housing 4.

[0047] The external drill bit 52 includes a diamond core 521 for increasing hardness, a tungsten carbide alloy layer 522 for increasing wear resistance, and a TISIN coating 523 for increasing high-temperature strength. The tungsten carbide alloy layer 522 is wrapped around the outer side of the diamond core 521, and the TISIN coating 523 is formed on the surface of the tungsten carbide alloy layer 522 using multi-arc ion plating technology. The present invention uses the diamond core 521 to enhance the overall hardness of the external drill bit 52, and tries to avoid the problem of the external drill bit 52 breaking during use. The tungsten carbide alloy layer 522 improves the overall wear resistance of the external drill bit 52, reduces the problem of severe wear during drilling, and ensures the service life of the external drill bit 52. The TISIN coating 523 improves the high temperature resistance of the external drill bit 52, and tries to avoid the external drill bit 52 affecting its strength due to long-term drilling.

[0048] The upper end of the push rod 101 is provided with a U-shaped wheel frame 102, and a pulley 103 is rotatably connected between the two vertical plates of the U-shaped wheel frame 102. When the drill bit housing 4 and the drill bit assembly 5 rotate inwardly, the push rod 101 drives the pulley 103 to rotate synchronously. At this time, the pulley 103 contacts the inner wall of the soil layer. Since the alloy drilling pipe 1 is drilling into the soil layer, its outer surface will squeeze the inner wall of the soil layer, so that the inner wall of the soil layer is gradually compacted. In this way, when the pulley 103 contacts the inner wall of the soil layer, a thrust is formed on the push rod 101, so that the push rod 101 moves into the drill bit housing 4. In this way, the push rod 101 can form a thrust on the drill bit assembly 5, so that the built-in block 51 gradually moves out of the drill bit housing 4. At the same time, the second tension spring 104 is stretched by force, which increases the cutting range of the external drill bit 52 on the bottom of the sample core, avoids the problem of unsatisfactory cutting effect at the bottom of the sample core as much as possible, and ensures the efficiency of geological sample core sampling.

[0049] A movable shaft 53 is provided on the surface of the side of the external drill bit 52 facing the internal block 51, and a control chamber 54 is opened in the internal block 51. The upper end of the movable shaft 53 rotates and penetrates into the control chamber 54, and a control gear 55 is sleeved on one end of the movable shaft 53 located in the control chamber 54. A control rack 56 is meshed and connected to one side of the control gear 55. A guide rail 57 is provided on the bottom wall of the control chamber 54, and a guide rail joint slidably connected to the guide rail 57 is provided on the lower side of the control rack 56. When in use, the control rack 56 slides on the guide rail 57, so that the control rack 56 can mesh and drive the control gear 55 to rotate. Therefore, the movable shaft 53 can drive the external drill bit 52 to rotate 180 degrees, thereby achieving the purpose of reversing the external drill bit 52, and avoiding as much as possible the problem that the cutting surface of the external drill bit 52 cannot cut the bottom of the sample core when the alloy drilling pipe 1 is reversed, thereby ensuring the cutting effect of the bottom of the sample core, and also ensuring the service life of the external drill bit 52.

[0050] A screw 58 is rotatably connected to the bottom wall of the control chamber 54. A threaded sleeve 59 is threadedly sleeved on the outer surface of the screw 58. A control rotating plate 510 is hingedly connected between the outer surface of the threaded sleeve 59 and the upper surface of the control rack 56. A control rod 511 is arranged at the upper end of the screw 58. The upper end of the control rod 511 rotates through the upper surface of the built-in block 51 and extends into the drill housing 4. The drill housing 4 is provided with one end that rotates and penetrates into the transmission chamber 92 and is connected to a stationary rod 512 arranged on the inner wall of the transmission chamber 92. The transmission shaft 91 is rotatably sleeved on the outer surface of the stationary rod 512. The stationary rod 512 is A face gear 513 is provided at one end of the rod 512 located in the drill housing 4. A mounting shaft 514 which is in the same vertical position as the control rod 511 is rotatably connected to the top wall of the drill housing 4. A movable gear 515 which is meshed with the face gear 513 is sleeved on the outer surface of the mounting shaft 514. When the drill housing 4 rotates, the movable gear 515 rotates synchronously with the drill housing 4, so that the movable gear 515 rotates in a circle along the side of the face gear 513. During the rotation of the movable gear 515, it rotates under the transmission of the teeth of the face gear 513, thereby driving the mounting shaft 514 to rotate.

[0051] An extension groove 516 is provided on the upper surface of the control rod 511, and the lower end of the installation shaft 514 extends into the extension groove 516 and slides in the extension groove 516. A limiting groove 518 extending from the upper surface of the control rod 511 is provided on the inner wall of the extension groove 516. A limiting slider 517 adapted to the limiting groove 518 is provided on the outer surface of the installation shaft 514. The limiting slider 517 slides in the limiting groove 518. In this way, when the push rod 101 pushes the built-in block 51 to move, the installation shaft 514 slides in the extension groove 516 synchronously, and the limiting slider 517 slides in the limiting groove 518 at the same time. When the installation shaft 514 During rotation, since the control rod 511 is restricted by the limiting slider 517 and the limiting slot 518, it rotates synchronously with the mounting shaft 514, thereby causing the screw 58 to rotate synchronously. In this way, the threaded sleeve 59 is displaced downwardly under the transmission of the screw thread 58. During the displacement of the threaded sleeve 59, a thrust can be formed on the control rotating plate 510. The control rotating plate 510 synchronously pushes the control rack 56 to move, thereby achieving the purpose of controlling the reversal of the external drill bit 52. The above structure can automatically control the reversal of the external drill bit 52 when the drill bit housing 4 and the drill bit assembly 5 rotate inwardly, without the need for manual operation, thereby improving the use effect of the device.

[0052] In the present invention, the thread gap on the screw 58 is relatively large, so when the control rod 511 rotates at a small angle, the displacement distance of the threaded sleeve 59 on the screw 58 can be guaranteed, thereby ensuring the displacement distance of the control rack 56, so that the external drill bit 52 can be controlled to rotate one hundred and eighty degrees.

[0053] The working principle of the alloy drilling system for underground exploration provided by the present invention is as follows: the first step is to start the driving motor 6, and the output shaft of the driving motor 6 synchronously drives the second bevel gear 8 to rotate synchronously, so that the second bevel gear 8 meshes and drives the first bevel gear 7 to rotate, so that the alloy drilling pipe 1 rotates forward, and the screw lifting module controls the alloy drilling pipe 1 to move downward, so that the alloy drilling pipe 1 is drilled into the ground;

[0054] The second step is that when it is necessary to extract the sample core in the alloy drilling pipe 1, the electric push rod 97 is started and pushes the arc plate 98 to move to the side close to the driving gear 96 until it moves to a position where it can mesh with the driving gear 96. At this time, the alloy drilling pipe 1 is controlled to reverse one circle, so that during the rotation process, the driving gear 96 meshes with the teeth on the arc plate 98, so that the driving gear 96 synchronously drives the driving shaft 95 to rotate, so that the worm 94 rotates synchronously, and the transmission shaft 91 rotates synchronously under the drive of the worm gear 93, so that the drill housing 4 and the drill assembly 5 rotate inwardly. When the driving gear 96 moves out of the arc plate 98, the drill housing 4 and the drill assembly 5 rotate inwardly by 90 degrees to be horizontal. After the alloy drilling pipe 1 reverses one circle, the electric push rod 97 starts to pull the arc plate 98 to move to the side away from the driving gear 96;

[0055] Step 3: When the drill housing 4 and the drill assembly 5 rotate inward, the push rod 101 drives the pulley 103 to rotate synchronously, and the pulley 103 contacts the inner wall of the soil layer, which will form a thrust on the push rod 101, so that the push rod 101 moves into the drill housing 4. In this way, the push rod 101 can form a thrust on the drill assembly 5, so that the built-in block 51 gradually moves out of the drill housing 4, and at the same time the second tension spring 104 is stretched by force;

[0056] Step 4: When the drill housing 4 rotates, the movable gear 515 rotates synchronously with the drill housing 4, so that the movable gear 515 rotates in a circle along the side of the face gear 513. During the rotation of the movable gear 515, it rotates under the transmission of the teeth of the face gear 513, thereby driving the installation shaft 514 to rotate. The screw 58 rotates synchronously with the installation shaft 514, and the threaded sleeve 59 moves downward under the transmission of the screw thread 58. During the displacement of the threaded sleeve 59, a thrust can be formed on the control rotating plate 510, and the control rotating plate 510 synchronously pushes the control rack 56 to move, thereby achieving the purpose of controlling the reversal of the external drill bit 52;

[0057] Step 5: After the bottom of the sample core is cut, the screw lifting module lifts the alloy drilling pipe 1 and the sample core out of the ground as a whole. At this time, the electric push rod 97 pushes the arc plate 98 to move to the side close to the driving gear 96 again. At this time, the alloy drilling pipe 1 is controlled to rotate forward, so that the drill housing 4 and the drill assembly 5 rotate outward by 90 degrees to be vertical. At the same time, the external drill bit 52 rotates to the initial position, and the internal block 51 moves to the initial position. At the same time, when the driving shaft 95 rotates, the cam 952 rotates synchronously with the driving shaft 95, so that the cam 952 can form a thrust on the swing plate 954, so that the swing plate 954 drives the knocking ball 955 to knock on the inner wall of the knocking ball 955 close to the inner side of the alloy drilling pipe 1. Because the driving shaft 95 will only rotate when the drill housing 4 and the drill assembly 5 are controlled to rotate, when the sample core is extracted vertically upward, the knocking of the knocking ball 955 causes the sample core to separate from the inner wall of the alloy drilling pipe 1.

Claims

1. An alloy drilling system for underground exploration, comprising an alloy drilling pipe (1) and a U-shaped mounting frame (2) rotatably sleeved on the outer surface of the alloy drilling pipe (1), characterized in that: The lower surface of the alloy drilling pipe (1) is provided with a plurality of mounting grooves (3) extending respectively from the inner and outer surfaces of the alloy drilling pipe (1); the plurality of mounting grooves (3) are arranged in a circular array on the lower side of the alloy drilling pipe (1); a drill housing (4) is arranged in the mounting groove (3); a drill assembly (5) is arranged on the lower side of the drill housing (4); a shielding assembly for shielding the inner side of the drill housing (4) is arranged in the mounting groove (3); a transmission assembly (9) for controlling the rotation of the drill housing (4) and the drill assembly (5) is arranged on the drill housing (4); the transmission assembly (9) comprises two transmission shafts (91); the two transmission shafts (91) are respectively arranged on the opposite side surfaces of the drill housing (4); the other end of the transmission shaft (91) is rotatably connected to the inner wall of the mounting groove (3); The shielding assembly comprises a baffle (31), which is arranged in the installation groove (3) and slides in contact with the inner wall of the installation groove (3). A plurality of contraction cavities (32) are respectively located directly above the installation groove (3) in the alloy drilling pipe (1). The upper side of the baffle (31) slides through the contraction cavity (32). The top wall of the contraction cavity (32) is provided with a connecting slide rod (33). A built-in cavity (34) is arranged in the baffle (31). The lower end of the connecting slide rod (33) slides through the built-in cavity (34). An end of the connecting slide rod (33) located in the built-in cavity (34) is provided with a built-in plate (35) that slides in the built-in cavity (34). A first tension spring (36) that is movably sleeved on the outer surface of the connecting slide rod (33) is provided between the built-in plate (35) and the top wall of the built-in cavity (34). The drill bit assembly (5) comprises an internal block (51) and an external drill bit (52), wherein the internal block (51) is arranged on the upper side of the external drill bit (52), and the upper side of the internal block (51) slides through the drill bit housing (4); an extension assembly (10) for controlling the extension of the drill bit assembly (5) is arranged on the drill bit housing (4); the extension assembly (10) comprises a push rod (101), and the push rod (101) is arranged on a side surface of the internal block (51) located inside the drill bit housing (4); the other end of the push rod (101) slides through the upper surface of the drill bit housing (4); a second tension spring (104) movably sleeved on the outer surface of the push rod (101) is arranged between the internal block (51) and the top wall of the drill bit housing (4); a U-shaped wheel frame (102) is arranged at the upper end of the push rod (101), and a pulley (103) is rotatably connected between two vertical plates of the U-shaped wheel frame (102).

2. The alloy drilling system for underground exploration according to claim 1, characterized in that: A driving motor (6) is arranged on the outer surface of one side of the U-shaped mounting frame (2); the output shaft of the driving motor (6) rotates and passes through the vertical plate of the U-shaped mounting frame (2); a second bevel gear (8) is arranged on one end of the output shaft of the driving motor (6) passing through the vertical plate of the U-shaped mounting frame (2); and a first bevel gear (7) meshingly connected with the second bevel gear (8) is sleeved on the outer surface of the alloy drilling pipe (1) near the second bevel gear (8).

3. The alloy drilling system for underground exploration according to claim 2, characterized in that: The lower side of the alloy drilling pipe (1) is provided with a plurality of transmission chambers (92), the transmission chamber (92) being arranged on a side close to the mounting groove (3), one end of a transmission shaft (91) close to the transmission chamber (92) being rotatably penetrated into the transmission chamber (92), the outer surface of one end of the transmission shaft (91) located in the transmission chamber (92) being sleeved with a worm gear (93), the bottom wall of the transmission chamber (92) being rotatably connected with the worm gear (93) being meshingly connected with a worm (94), the upper surface of the worm gear (94) being provided with a driving shaft (95), the upper end of the driving shaft (95) being rotatably penetrated out of the alloy drilling pipe (91) and the outer surface of the worm gear (93) being meshingly connected with a worm (94), the upper surface of the worm gear (94) being provided with a driving shaft (95), the upper end of the driving shaft (95) being rotatably penetrated out of the alloy drilling pipe (91) and the outer surface of the worm gear (93) being meshingly connected with a worm (94), the upper surface of the worm gear (94) being provided with a driving shaft (95), the upper end of the driving shaft (95) being rotatably penetrated out of the alloy drilling pipe (91) and the outer surface of the worm gear (94 ... The upper surface of the probe tube (1) is provided with a driving gear (96) on the outer surface of one end of the driving shaft (95) located outside the alloy drilling tube (1); an electric push rod (97) is provided on the outer surface of one side of the U-shaped mounting frame (2) away from the driving motor (6); one end of the telescopic rod of the electric push rod (97) slides through the vertical plate of the U-shaped mounting frame (2); an arc plate (98) is provided on the end of the telescopic rod of the electric push rod (97) that passes through the U-shaped mounting frame (2); and teeth that mesh with the driving gear (96) are provided on the inner side of the arc plate (98) facing the driving gear (96).

4. The alloy drilling system for underground exploration according to claim 3, characterized in that: The alloy drilling pipe (1) is provided with a plurality of knocking cavities (951) rotatably sleeved on the outer surface of the driving shaft (95); a rotating shaft (953) is rotatably connected to the inner wall of the knocking cavity (951) close to the inner side surface of the alloy drilling pipe (1); a swing plate (954) is provided on the lower surface of the rotating shaft (953); a knocking ball (955) for knocking against the inner wall of the knocking cavity (951) is provided on the lower side of the swing plate (954); and a cam (952) in contact with the upper side of the swing plate (954) is sleeved on the outer surface of one end of the driving shaft (95) located in the knocking cavity (951).

5. The alloy drilling system for underground exploration according to claim 4, characterized in that: A movable shaft (53) is arranged on a surface of one side of the external drill bit (52) facing the internal block (51); a control chamber (54) is provided in the internal block (51); the upper end of the movable shaft (53) rotates and penetrates into the control chamber (54); a control gear (55) is sleeved on one end of the movable shaft (53) located in the control chamber (54); a control rack (56) is meshedly connected to one side of the control gear (55); a guide rail (57) is arranged on the bottom wall of the control chamber (54); a guide rail joint slidably connected to the guide rail (57) is arranged on the lower side of the control rack (56).

6. The alloy drilling system for underground exploration according to claim 5, characterized in that: A screw rod (58) is rotatably connected to the bottom wall of the control cavity (54); a threaded sleeve (59) is threadedly sleeved on the outer surface of the screw rod (58); a control rotating plate (510) is hingedly connected between the outer surface of the threaded sleeve (59) and the upper surface of the control rack (56); a control rod (511) is arranged at the upper end of the screw rod (58); the upper end of the control rod (511) is rotatably penetrated through the upper surface of the built-in block (51) and extends into the drill housing (4); one end of the drill housing (4) is rotatably penetrated into the transmission cavity (92) and connected with a stationary rod (512) arranged on the inner wall of the transmission cavity (92); the transmission shaft (91) is rotatably sleeved on the outer surface of the stationary rod (512); one end of the stationary rod (512) located in the drill housing (4) is provided with a face gear (513); a mounting shaft (514) in the same vertical position as the control rod (511) is rotatably connected on the top wall of the drill housing (4); and a movable gear (515) meshingly connected with the face gear (513) is sleeved on the outer surface of the mounting shaft (514).

7. The alloy drilling system for underground exploration according to claim 6, characterized in that: The upper surface of the control rod (511) is provided with an extension groove (516), the lower end of the installation shaft (514) extends into the extension groove (516) and slides in the extension groove (516), the inner wall of the extension groove (516) is provided with a limiting slide groove (518) extending out of the upper surface of the control rod (511), and the outer surface of the installation shaft (514) is provided with a limiting slide block (517) adapted to the limiting slide groove (518), and the limiting slide block (517) slides in the limiting slide groove (518).

8. The alloy drilling system for underground exploration according to claim 7, characterized in that: The external drill bit (52) comprises a diamond inner core (521) for increasing hardness, a tungsten carbide alloy layer (522) for increasing wear resistance, and a TISIN coating (523) for increasing high-temperature strength. The tungsten carbide alloy layer (522) is wrapped around the outer side of the diamond inner core (521), and the TISIN coating (523) is formed on the surface of the tungsten carbide alloy layer (522) by using a multi-arc ion plating technology.

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