An energy-saving digital drilling equipment

Abstract

The invention discloses an energy-saving digital drilling equipment, including an equipment body, a lifting seat is provided on the equipment body, a drill rod power head is provided on the lifting seat, a drill rod is provided on the drill rod power head, the drill rod includes a bottom rod with a drill bit at the bottom and an extension rod connected to the upper end of the bottom rod, a positioning plate is extended to the outer periphery of the bottom rod, a plurality of annular protrusions are provided on the top surface of the positioning plate, a plurality of sleeves are movably sleeved on the inner wall or outer wall of the plurality of annular protrusions, a plurality of through holes are radially provided on the annular protrusions, a stopper with a ball head at one end is penetrated in the through hole, the ball head of the stopper is ejected from one end of the through hole by a spring, a positioning groove matched with the ball head is provided on the sleeve, a first support portion is extended outwardly from the outer wall of the sleeve near the top, and a second support portion is extended inwardly from the inner wall of the bottom of the sleeve. This energy-saving digital drilling equipment effectively reduces the friction of the soft soil layer hole wall on the drill rod and avoids the collapse of the soft soil layer, reduces the driving torque required for the drill rod, avoids the drill rod from getting stuck, and plays an energy-saving role.

Description

Technical Field

[0001] The invention belongs to the technical field of drilling equipment, in particular to energy-saving digital drilling equipment. Background Art

[0002] Drilling equipment is a series of mechanical equipment used for drilling holes in rock and soil layers below the surface in the fields of underground resource exploration, geological survey, engineering survey, hydrogeological survey and mineral mining. This type of equipment is widely used in the exploration and mining of oil, natural gas, groundwater, coal, metal and non-metallic minerals, as well as the foundation construction of construction projects. It includes rotary drilling rigs, land drilling rigs, off-road drilling rigs, drilling platforms, impact drilling rigs, down-the-hole drilling rigs, rope coring drills, multi-function drilling rigs, horizontal directional drilling rigs, etc.

[0003] The rope coring drill can extract core samples without lifting the entire drill string. The drilling tools of the rope coring drill mainly include the outer drill rod, inner tube, drill bit and rope coring device. The inner tube is located inside the outer drill rod and can move freely up and down through the center hole of the drill rod. A spring-loaded mechanism is connected above the drill bit to capture and fix the core during drilling. The drill rig rotates and drills through the outer drill rod and drill bit, and injects flushing fluid to help remove debris from the bottom of the hole. The inner core tube is lowered to the vicinity of the drill bit along with the drilling tools, but it is not fixed to the drill rod, but is supported by the borehole wall to maintain its position. When the drill bit cuts the rock to form a core, the core falls into the inner tube. After drilling a certain length, a certain length of complete core will accumulate in the inner tube. When collecting the core sample, a wire rope with a catcher is lowered through the center hole of the drill rod. When the catcher reaches the top of the inner core tube, it docks and locks with the inner tube through the spring-loaded mechanism. Then, the inner core tube and the captured core are lifted to the ground by the wire rope. After the core is taken out, the inner tube is cleaned, and then the inner tube is lowered again into the drill pipe to continue drilling and sampling, and the whole process is repeated. The advantage of the rope coring drill is that it greatly reduces the number of drill lifting, improves drilling efficiency, reduces disturbance to the borehole wall, thereby improving the core recovery rate and integrity, while also reducing labor intensity and extending the life of the drill bit. This technology is particularly suitable for geological exploration of deep holes and complex formations.

[0004] During the coring operation, the surface is generally a soft soil layer, which leads to the friction effect between the outer wall of the drill pipe and the newly formed hole wall, which is a factor that cannot be ignored. This interaction significantly increases the resistance of the drilling process. Especially under soft soil geological conditions, the adhesion of the hole wall to the drill pipe is particularly strong, resulting in a serious increase in the torque that the drill pipe needs to overcome, resulting in a large amount of energy wasted for no reason. Especially when the drilling rig stops rotating and restarts, the adhesion of the hole wall to the drill pipe greatly increases the initial torque that needs to be overcome when restarting, and sometimes even causes the drill pipe to get stuck, making it difficult to continue to advance or withdraw. In the prior art, the friction between the outer wall of the drill pipe and the hole wall is often avoided by expanding the aperture of the borehole, but the bearing capacity of the hole wall in the soft soil layer is small, and the hole wall is prone to lateral collapse, which still causes the hole wall to contact with the drill pipe, increasing the driving torque of the drill pipe or the jamming of the drill pipe. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an energy-saving digital drilling device. This energy-saving digital drilling device can sequentially arrange the casing outside the drill rod to form a supporting hole wall during the drilling process of the drill rod, effectively reducing the friction of the soft soil hole wall on the drill rod and avoiding the collapse of the soft soil layer, reducing the driving torque required for the drill rod, avoiding the drill rod from getting stuck, and playing a role in energy saving.

[0006] In order to solve the above technical problems, the present invention is solved through the following technical solutions: an energy-saving digital drilling equipment, including an equipment main body, a lifting seat is provided on the equipment main body, a drill rod power head is provided on the lifting seat, a drill rod power head is provided with a drill rod, the drill rod includes a bottom rod with a drill bit at the bottom and an extension rod continuously connected to the upper end of the bottom rod, the bottom rod extends to the outer periphery with a positioning plate, a plurality of annular protrusions are provided on the top surface of the positioning plate, a plurality of inner walls or outer walls of the annular protrusions are movably sleeved with a plurality of sleeves, a plurality of through holes are radially provided on the annular protrusions, a limiting member with a ball head at one end is penetrated in the through hole, the ball head of the limiting member is ejected from one end of the through hole by a spring, a positioning groove cooperating with the ball head is provided on the sleeve, a first support portion is extended outwardly from the outer wall of the sleeve close to the top, and a second support portion is extended inwardly from the inner wall of the bottom of the sleeve. During the drilling operation, this energy-saving digital drilling equipment first sleeves the casing on the outside of the drill pipe, and the bottom of the casing is sleeved with the annular protrusion, and is elastically positioned by the ball head of the limiter. The drill pipe and the casing are drilled into the ground together through the cooperation of the drill pipe power head and the lifting seat. During the drilling process, the casing contacts and rubs against the hole wall. At first, the casing and the drill pipe rotate together, and the friction between the casing and the hole wall gradually increases with the increase of the contact area. When the friction force increases to a certain level or the first support part of the inner casing and the second support part of the outer casing are against each other, the limiter is compressed inwardly, and the ball head of the limiter is separated from the positioning groove of the casing. At this time, the casing automatically detaches, and the driving torque required for the drill pipe can reduce the friction of the detached casing. In the process of gradual drilling, several casings are automatically detached from the outside to the inside in turn to form a support tube, which effectively reduces the friction of the soft soil layer hole wall on the drill pipe and avoids the collapse of the soft soil layer, reduces the driving torque required for the drill pipe, avoids the drill pipe from getting stuck, and plays an energy-saving role.

[0007] In the above technical solution, preferably, the outermost casing is provided with a support ring near the top for supporting on the ground surface. The support ring is used to support the casing on the ground and prevent the top of the outermost casing from entering the ground, and facilitate the subsequent pulling out of the casing.

[0008] In the above technical solution, preferably, the drill rod power head is provided with a second through hole, and a drill rod clamping component is provided in the second through hole. The use of this structure facilitates continuous splicing and drilling of the extension rods of the drill rod.

[0009] In the above technical solution, preferably, the first support portion of the casing and the second support portion of the adjacent outer casing are against each other to form a flow channel. With this structure, mud can flow through the flow channel from between the drill pipe and the casing, rather than between the casing and the hole wall, making the casing positioning more stable.

[0010] In the above technical solution, preferably, the first supporting portion is annular, and the second supporting portion is a plurality of evenly distributed protrusions.

[0011] In the above technical solution, preferably, every two adjacent annular protrusions are grouped in pairs, the outer circumference of the outer annular protrusion is sleeved with the sleeve, and the inner side of the inner annular protrusion is sleeved with the sleeve, and the spring is arranged between the stoppers of the two annular protrusions in each group, and the two ends of the spring are respectively located in the blind holes of the stoppers. This structure can facilitate the assembly of the stoppers and the spring, and the structure is simple and compact.

[0012] In the above technical solution, preferably, every two adjacent annular protrusions are grouped in pairs, the outer circumference of the outer annular protrusion is sleeved with the sleeve, and the inner side of the inner annular protrusion is sleeved with the sleeve, and an elastic force adjustment component is arranged between the limiters of the two annular protrusions in each group, and the elastic force adjustment component includes a positioning bracket, and an adjustment stud is threadedly matched on the positioning bracket, and a conical abutment portion is arranged on the adjustment stud, and the two sides of the conical abutment portion are respectively abutted against a spring whose other end is located in the blind hole of the limiter, and the adjustment stud is adjusted to adjust the elastic force of the spring on the limiter. The use of this structure can extend or shorten the spring by adjusting the adjustment stud, thereby adjusting the elastic force of the spring on the limiter, and the friction force when the sleeve is disengaged can be set according to needs.

[0013] Compared with the prior art, the present invention has the following beneficial effects: during the drilling operation, the energy-saving digital drilling equipment first sleeves the casing on the outside of the drill rod, the bottom of the casing is sleeved with the annular protrusion, and is elastically positioned by the ball head of the limiter, and the drill rod and the casing are drilled into the ground together through the cooperation of the drill rod power head and the lifting seat. During the drilling process, the casing contacts and rubs against the hole wall. At first, the casing and the drill rod rotate together, and the friction between the casing and the hole wall gradually increases with the increase of the contact area. When the friction force increases to a certain level or the first support part of the inner casing and the second support part of the outer casing are against each other, the limiter is compressed inwardly, and the ball head of the limiter is separated from the positioning groove of the casing. At this time, the casing automatically detaches, and the driving torque required for the drill rod can reduce the friction of the detached casing. In the process of gradual drilling, a plurality of casings are automatically detached from the outside to the inside in turn to form a support tube, which effectively reduces the friction of the soft soil layer hole wall on the drill rod and avoids the collapse of the soft soil layer, reduces the driving torque required for the drill rod, avoids the drill rod from being stuck, and plays an energy-saving role. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0015] Figure 2 The figure is a schematic diagram of the assembly structure of the drill pipe and the casing in an embodiment of the present invention.

[0016] Figure 3 The figure is a schematic diagram of the exploded structure of the drill pipe and the casing in the embodiment of the present invention.

[0017] Figure 4 for Figure 3 A partial enlarged view of point A in the middle.

[0018] Figure 5 Schematic diagram of the structure of the sleeve in an embodiment of the present invention.

[0019] Figure 6 It is a schematic structural diagram of two adjacent sleeves when they are sleeved in an embodiment of the present invention.

[0020] Figure 7 It is a partial cross-sectional view of the bottom of the drill pipe and the casing during assembly in an embodiment of the present invention.

[0021] Figure 8 for Figure 7 Enlarged view of point B in the middle.

[0022] Fig. 9 for Figure 7 A schematic diagram of another embodiment at B in FIG. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Figures 1 to 9An energy-saving digital drilling equipment includes an equipment body 1, the equipment body 1 includes a winch and a guide rail bracket, a lifting seat 2 is provided on the equipment body 1, the lifting seat 2 can be lifted and lowered on the guide rail bracket under the action of hydraulic pressure, a drill rod power head 3 is provided on the lifting seat 2, and a drill rod is provided on the drill rod power head 3, the drill rod includes a bottom rod 4 with a drill bit 5 at the bottom and an extension rod 41 connected to the upper end of the bottom rod 4, the bottom rod 4 extends to the periphery with a positioning plate 6, the positioning plate 6 can be located at any position of the periphery of the bottom rod 4, in this embodiment, the positioning plate 6 is located at the bottom of the bottom rod 4, the drill bit 6 is fixed below the positioning plate 6, and four annular protrusions 61 are provided on the top surface of the positioning plate 6, the four An annular protrusion 61 is concentrically arranged, and four sleeves 7 are movably sleeved on the inner or outer walls of the four annular protrusions 61. Four through holes 62 are radially arranged on the annular protrusion 61, and the four through holes 62 are evenly distributed on the annular protrusion 61. A limiting member 63 with a ball head 64 at one end is passed through the through hole 62, and the ball head 64 of the limiting member 63 is ejected from one end of the through hole 62 by a spring 65. A limiting ring larger than the diameter of the through hole 62 is provided on the end of the limiting member 63 opposite to the ball head. A positioning groove 71 cooperating with the ball head 64 is provided on the sleeve 7. A first supporting portion 72 is extended outward from the outer wall of the sleeve 7 near the top, and a second supporting portion 73 is extended inward from the inner wall of the bottom of the sleeve 7. During the drilling operation, the energy-saving digital drilling equipment first sleeves the casing 7 on the outside of the drill rod, and the bottom of the casing 7 is sleeved with the annular protrusion 61, and is elastically positioned by the ball head 64 of the limiter 63. The drill rod and the casing 7 are drilled into the ground together through the cooperation of the drill rod power head 3 and the lifting seat 2. During the drilling process, the casing 7 contacts and rubs with the hole wall. At first, the casing 7 rotates together with the drill rod, and the friction between the casing 7 and the hole wall gradually increases with the increase of the contact area. When the friction force increases to a certain level or the first support portion 72 of the inner casing 7 When the second supporting portion 73 of the outer casing 7 is in contact with the limit piece 63, the limit piece 63 is compressed inwardly, and the ball head 64 of the limit piece 63 is separated from the positioning groove 71 of the casing. At this time, the casing 7 is automatically separated, and the driving torque required for the drill rod can reduce the friction of the separated casing 7. In the process of gradual drilling, the four casings 7 are automatically separated from the outside to the inside in sequence to form a support tube, which effectively reduces the friction of the soft soil layer wall on the drill rod and avoids the collapse of the soft soil layer, reduces the driving torque required for the drill rod, avoids the drill rod from getting stuck, and plays a role in energy saving.

[0024] It is easy for a person skilled in the art to understand that different lengths of casings 7 can be used according to the depth of the soft soil layer at the drilling location. The deeper the soft soil layer, the longer the casing, and the shallower the soft soil layer, the shorter the casing. Of course, in other embodiments, the total length of multiple casings 7 can also be changed by increasing or decreasing the number of annular protrusions 61 and casings 7.

[0025] In this embodiment, a support ring 74 for supporting on the ground surface is provided on the outer periphery of the outermost casing 7 near the top. The support ring 74 is used to support the casing 7 on the ground, prevent the top of the outermost casing 7 from entering the ground, and facilitate the subsequent extraction of the casing 7.

[0026] In this embodiment, a second through hole is provided on the drill rod power head 3, and a drill rod clamping component is provided in the second through hole. This structure is a prior art, so its specific structure is not repeated, which facilitates the continuous splicing and drilling of the extension rods of the drill rod.

[0027] In this embodiment, the first support portion 72 of the casing 7 abuts against the second support portion 73 of the adjacent outer casing 7 to form a flow channel 75. With this structure, mud can flow from between the drill pipe and the casing 7 through the flow channel 75 instead of between the casing 7 and the hole wall, making the positioning of the casing 7 more stable.

[0028] In this embodiment, the first support portion 72 is annular, and the second support portion 73 is a plurality of evenly distributed protrusions. When the first support portion 72 abuts against the second support portion 73, the gap between the protrusions serves as a flow channel 75.

[0029] See also Figures 7 and 8 In this embodiment, every two adjacent annular protrusions 61 are grouped in pairs, the outer periphery of the outer annular protrusion 61 is sleeved with a sleeve 7, and the inner side of the inner annular protrusion 61 is sleeved with a sleeve 7, and an elastic force adjustment component 8 is arranged between the limit pieces 63 of the two annular protrusions 61 of each group, and the elastic force adjustment component 8 includes a positioning bracket 81, and the positioning bracket 81 is threadedly fitted with an adjusting stud 82, and the adjusting stud 82 is provided with a conical abutment portion 83, and the conical abutment portion 83 is respectively abutted on both sides of the spring 65 whose other end is located in the blind hole of the limit piece 63, and the adjusting stud 82 is adjusted to adjust the elastic force of the spring 65 on the limit piece 63. The adjusting stud 82 is vertically arranged, and can rise or fall when rotating, thereby changing the position of the conical abutment portion 83 aligned with and abutting against the spring 65. With this structure, the spring 65 can be extended or shortened by adjusting the adjusting stud 82, thereby adjusting the elastic force of the spring 65 on the limiter 63, and the friction force when the sleeve 7 is disengaged can be set as needed.

[0030] See also Fig. 9 ,for Figure 7 In another embodiment of the middle B, every two adjacent annular protrusions 61 are grouped in pairs, the outer circumference of the outer annular protrusion 61 is sleeved with a sleeve 7, and the inner side of the inner annular protrusion 61 is sleeved with a sleeve 7, and a spring 65 is arranged between the stoppers 63 of the two annular protrusions 61 of each group, and the two ends of the spring 65 are respectively located in the blind holes of the stoppers 63. The use of this structure can facilitate the assembly of the stoppers 63 and the spring 65, and the structure is simple and compact.

[0031] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An energy-saving digital drilling device, comprising a device body (1), a lifting seat (2) being provided on the device body (1), a drill rod power head (3) being provided on the lifting seat (2), a drill rod being provided on the drill rod power head (3), the drill rod comprising a bottom rod (4) having a drill bit (5) at the bottom and an extension rod (41) connected to the upper end of the bottom rod (4), characterized in that: The bottom rod (4) is provided with a positioning plate (6) extending toward the outer circumference. A plurality of annular protrusions (61) are provided on the top surface of the positioning plate (6). A plurality of sleeves (7) are movably sleeved on the inner or outer walls of the plurality of annular protrusions (61). A plurality of through holes (62) are radially provided on the annular protrusions (61). A stopper (63) having a ball head (64) at one end is inserted into the through hole (62). The ball head (64) of the stopper (63) is ejected from one end of the through hole (62) by a spring (65). A positioning groove (71) cooperating with the ball head (64) is provided on the sleeve (7). A first supporting portion (72) is extended outwardly from the outer wall of the sleeve (7) near the top. A second supporting portion (73) is extended inwardly from the inner wall of the bottom of the sleeve (7).

2. The energy-saving digital drilling equipment according to claim 1, characterized in that: A support ring (74) for supporting on the ground surface is provided on the outer periphery of the outermost casing (7) close to the top.

3. The energy-saving digital drilling equipment according to claim 1, characterized in that: The drill rod power head (3) is provided with a second through hole, and a drill rod clamping component is provided in the second through hole.

4. The energy-saving digital drilling equipment according to claim 1, characterized in that: When the first support portion (72) of the sleeve (7) abuts against the second support portion (73) of the sleeve (7) located adjacent to the outside, a circulation channel (75) is formed.

5. The energy-saving digital drilling equipment according to claim 4, characterized in that: The first supporting portion (72) is annular, and the second supporting portion (73) is a plurality of evenly distributed protrusions.

6. The energy-saving digital drilling equipment according to claim 1, characterized in that: Every two adjacent annular protrusions (61) are grouped in pairs, the outer periphery of the outer annular protrusion (61) is sleeved with the sleeve (7), and the inner periphery of the inner annular protrusion (61) is sleeved with the sleeve (7), and the spring (65) is arranged between the limiting members (63) of the two annular protrusions (61) of each group, and the two ends of the spring (65) are respectively located in the blind holes of the limiting members (63).

7. The energy-saving digital drilling equipment according to claim 1, characterized in that: Every two adjacent annular protrusions (61) are grouped in pairs, the outer circumference of the outer annular protrusion (61) is sleeved with the sleeve (7), and the inner side of the inner annular protrusion (61) is sleeved with the sleeve (7). An elastic force adjustment component (8) is arranged between the limiting members (63) of the two annular protrusions (61) in each group, and the elastic force adjustment component (8) comprises a positioning bracket (81), an adjusting stud (82) is threadedly engaged on the positioning bracket (81), and a conical abutting portion (83) is arranged on the adjusting stud (82), and two sides of the conical abutting portion (83) are respectively abutted against springs (65) whose other ends are located in blind holes of the limiting members (63), and the adjusting stud (82) is adjusted to adjust the elastic force of the spring (65) on the limiting member (63).

Images