Protective device of vertical shaft drilling machine and vertical shaft drilling machine

Abstract

The utility model relates to the technical field of underground tunneling equipment, in particular to a protective device of a vertical shaft drilling machine and the vertical shaft drilling machine. The protection device comprises a fixing plate and a plurality of shielding mechanisms, and the shielding mechanisms are located in the circumferential direction of the edge of the drill rod and movably arranged on the fixing plate. A sealing assembly is arranged on the end face, close to the drill rod, of the shielding mechanism. Under the action of external force, the shielding mechanism is provided with a first position moving close to the drill rod and a second position moving away from the drill rod. And at the first position, each sealing assembly is attached to the drill rod, so that the sealing assemblies of the multiple shielding mechanisms are connected to form a sealing ring, and the shielding mechanisms are connected with the fixing plate in a sealed mode. When slurry carries rock slag to flow downwards, due to sealing of the shielding mechanism, the slurry cannot enter the gap between the power equipment and the drill rod, but is directly guided to the outside, and the situation that foreign matter affects normal operation of the equipment or causes mechanical faults is avoided.

Description

Technical Field

[0001] This utility model relates to the field of underground tunneling equipment technology, specifically to a protective device for a vertical shaft drilling rig and the vertical shaft drilling rig itself. Background Technology

[0002] A cut-groove riser is a type of underground shaft excavation equipment, primarily used for cutting and excavating risers when there is no overhead tunnel. The riser is powered by a rotary head that drives the drill rod to rotate and transmits propulsion force to the hydraulic cylinders. During excavation, the riser uses water to flush out rock debris and cool the drill bit.

[0003] Because the water jetting position of the cutting groove riser is above the rotary power head, the water jetting out carries rock debris and flows downward along the drill rod, which can easily lead to rock debris accumulation inside the rotary power head, thus affecting the normal operation of the equipment. Utility Model Content

[0004] In view of this, the present invention provides a protective device for a vertical shaft drilling rig and a vertical shaft drilling rig to solve the problem of rock debris accumulation inside the rotary power head.

[0005] In a first aspect, this utility model provides a protective device for a vertical shaft drilling rig, the protective device comprising:

[0006] A fixing plate, in the form of a ring, is suitable for installation on the power equipment of a vertical shaft drilling rig; a drill rod is installed on the power equipment, and the drill rod is connected to the power equipment after being inserted into the annular hole of the fixing plate;

[0007] Multiple shielding mechanisms are located circumferentially along the edge of the drill rod and are movably mounted on the fixed plate; each shielding mechanism has a sealing component on its end face near the drill rod.

[0008] Under the action of external force, the shielding mechanism has a first position that moves closer to the drill rod and a second position that moves away from the drill rod; in the first position, each sealing component is in contact with the drill rod, so that the sealing components of multiple shielding mechanisms are connected to form a sealing ring, and the shielding mechanism is sealed to the fixed plate.

[0009] Beneficial effects: In actual operation, the shielding mechanism is first moved to the first position, allowing multiple shielding mechanisms to seal the drill pipe circumferentially. When the drilling mud carrying rock cuttings flows downwards, the sealing of the shielding mechanism prevents the mud from entering the gap between the power equipment and the drill pipe. Simultaneously, the shielding mechanism and the fixing plate directly guide the mud to the outside, preventing these foreign objects from affecting the normal operation of the equipment or causing mechanical failure. Furthermore, when the shielding mechanism is moved to the first position, it directly adheres to the drill pipe. The power equipment, fixing plate, shielding mechanism, and drill pipe rotate synchronously, resulting in a static seal between the sealing components and the drill pipe. Compared to dynamic seals, this provides a better sealing effect, and the sealing components are less prone to wear, extending their service life. Additionally, because the shielding mechanism flexibly adheres to the drill pipe and has an elastic sealing ring, it has the ability to compensate for drill pipe tolerances after connection and disconnection, further ensuring performance.

[0010] In one alternative implementation, in the first position, two adjacent shielding mechanisms are close to each other and fit tightly together; in the second position, two adjacent shielding mechanisms are far apart from each other and spaced apart.

[0011] Beneficial effects: In the first position, adjacent shielding mechanisms are close together and tightly fitted, ensuring a complete seal between the shielding mechanism and the drill pipe, forming a seamless sealing ring. This tight-fitting design effectively prevents the ingress of any small particles or liquids, providing higher sealing reliability. The tight-fitting shielding mechanisms reduce the gaps between sealing components, further reducing the risk of leakage due to pressure differences, which is especially important when operating in high-pressure environments.

[0012] Furthermore, in the second position, the spacing between the shielding mechanisms allows maintenance personnel easy access to the drill pipe and other critical components, simplifying maintenance and inspection. This not only improves work efficiency but also reduces equipment downtime. After maintenance, simply moving the shielding mechanisms back to the first position quickly restores the seal, eliminating the need for complex assembly steps and reducing maintenance difficulty.

[0013] In one alternative embodiment, the fixing plate has an annular protrusion on the side near the drill rod, the blocking mechanism is fastened to the annular protrusion, and the inner edge of the blocking mechanism has the sealing component on the end face near the drill rod.

[0014] Beneficial Effects: In this embodiment, the annular protrusion on the fixed plate provides a reliable mounting base for the shielding mechanism, ensuring that the shielding mechanism can be firmly fastened to the annular protrusion. This stable installation method effectively prevents the shielding mechanism from loosening or shifting during operation, improving the stability of the entire device. Furthermore, the design of the annular protrusion further seals the area between the shielding mechanism and the fixed plate, allowing mud to flow only from the shielding mechanism to the outside of the fixed plate, preventing it from flowing into the drill pipe and power equipment through the gap between the shielding mechanism and the fixed plate. This effectively prevents external impurities and liquids from entering the equipment, improving the overall sealing performance.

[0015] In one alternative embodiment, in the first position, the outer edge of the shielding mechanism is in close contact with the outer edge of the annular protrusion; in the second position, the outer edge of the shielding mechanism is spaced apart from the outer edge of the annular protrusion.

[0016] Beneficial Effects: In this embodiment, when in the first position, the outer edge of the shielding mechanism fits tightly against the outer edge of the annular protrusion, forming a complete sealing barrier. This not only further ensures the sealing between the shielding mechanism and the fixed plate, but also prevents external impurities and liquids from entering the equipment through the gap between them, improving the overall sealing effect. Simultaneously, the tight fit design reduces any possible leakage paths, especially when operating in high-pressure or high-humidity environments, effectively preventing mud from seeping into the interior and ensuring the safe operation of the equipment.

[0017] In one optional implementation, the blocking mechanism includes:

[0018] The panel is fastened to the annular protrusion; the panel is provided with the outer edge and the inner edge.

[0019] The sealing assembly is disposed on the inner edge;

[0020] A water-retaining cover is disposed at one end of the panel along the length direction of the panel;

[0021] A water baffle is disposed at the other end of the panel along the length of the panel.

[0022] In the first position, between two adjacent shielding mechanisms, the water baffle of one shielding mechanism is embedded in the water baffle of the other shielding mechanism, and the water baffle and the water baffle are tightly fitted together.

[0023] Beneficial effects: In this embodiment, the water baffle and the water baffle cover are closely fitted together. This interlocking structure forms a continuous waterproof barrier, which effectively prevents external mud from entering the equipment and reduces any possible leakage paths. Especially when working in high pressure or high humidity environments, it can effectively prevent mud leakage and ensure the safe operation of the equipment.

[0024] In one optional embodiment, the blocking mechanism further includes:

[0025] The first magnetic suction element is disposed on the water-blocking cover;

[0026] A second magnetic attractor is disposed on the water baffle plate; the magnetic properties of the second magnetic attractor are opposite to those of the first magnetic attractor.

[0027] Beneficial Effects: In this embodiment, the first and second magnetic components have opposite magnetic properties, generating a strong attractive force that allows the baffle plate to be firmly embedded in the baffle cover. This magnetic fixing method not only enhances the connection stability between the baffle mechanisms but also ensures that it will not easily loosen under high vibration or impact environments. Simultaneously, the magnetic force allows the baffle plate and the baffle cover to fit more tightly, reducing any possible leakage paths and further enhancing sealing performance. The additional adsorption force provided by the magnetic components, combined with the original mechanical fitting structure, forms a double sealing protection, ensuring good sealing performance even under extreme conditions.

[0028] In one alternative embodiment, the sealing assembly includes:

[0029] A sealing plate is disposed on the end face of the shielding mechanism near the drill rod; and the end face of the sealing plate near the drill rod matches the surface of the drill rod.

[0030] A sealing groove is formed on the end face of the sealing plate near the drill rod; the sealing groove extends circumferentially along the drill rod.

[0031] A sealing strip is disposed in the sealing groove;

[0032] In the first position, the sealing plate presses against the sealing strip and then fits into the drill rod, and the sealing plates of multiple shielding mechanisms connect to form a sealing ring.

[0033] In one alternative embodiment, the sealing groove is inclined in the vertical direction.

[0034] Beneficial effects: In this embodiment, the sealing groove is inclined, so that after the mud flows onto the sealing strip, the sealing strip will play a certain guiding effect, collecting all the mud at the high position to the low position, and then discharging it outwards, thereby improving the overall sealing performance of the equipment.

[0035] In one alternative embodiment, in the vertical direction, the sealing groove has a drainage hole in the low point region; the drainage hole penetrates the sealing plate radially along the drill rod.

[0036] Beneficial effects: In this embodiment, after the sealing strip collects the mud in the location area, it is discharged to the outside through the drain hole, which can prevent excess mud from being between the sealing strip and the drill rod. This not only improves the drainage performance, but also improves the overall sealing performance of the equipment.

[0037] In one optional embodiment, along the circumference of the drill rod, the two ends of the sealing plate are respectively provided with a first engaging portion and a second engaging portion, and the first engaging portion and the second engaging portion of two adjacent shielding mechanisms are adapted to be inserted into each other.

[0038] Beneficial Effects: In this embodiment, when the first and second mating parts of two adjacent shielding mechanisms are interlocked, the sealing plates of multiple shielding mechanisms can be tightly connected to form a complete sealing ring. This design ensures continuous sealing throughout the entire circumference, eliminates any possible leakage points, and guarantees the safe operation of the equipment. Furthermore, the interlocking design of the first and second mating parts creates a mechanical interlocking structure between adjacent shielding mechanisms, enhancing the stability of the connection. This design effectively prevents the shielding mechanisms from misalignment or displacement due to external forces during operation, improving the reliability of the entire device.

[0039] In one alternative embodiment, when the first and second mating parts of two adjacent shielding mechanisms are inserted into each other, the sealing strips on the two shielding mechanisms partially overlap.

[0040] Beneficial effects: In this embodiment, the overlapping design effectively eliminates any tiny gaps between the sealing strips, preventing mud from seeping in through these potential leakage paths and ensuring the safe operation of the equipment more reliably.

[0041] In one optional embodiment, the protective device further includes:

[0042] A driving device is mounted on the fixed plate; the driving device is provided with a driving end, and the driving end is connected to the connecting plate on the blocking mechanism.

[0043] Under the driving action of the driving device, the connecting plate drives the blocking mechanism to switch between the first position and the second position.

[0044] Secondly, the present invention also provides a vertical shaft drilling rig, which includes a power unit and a protective device for the vertical shaft drilling rig as described in any of the above embodiments. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0046] Figure 1 This is a schematic diagram of the shielding mechanism in the first position in an embodiment of the present invention;

[0047] Figure 2 This is a schematic diagram of the shielding mechanism in the second position in an embodiment of the present invention;

[0048] Figure 3 for Figure 2 A magnified view of part A in the diagram;

[0049] Figure 4 This is a schematic diagram of the shielding mechanism in an embodiment of the present utility model;

[0050] Figure 5 for Figure 2 Partial sectional view;

[0051] Figure 6 for Figure 5 A magnified view of part B in the diagram;

[0052] Figure 7 This is an internal schematic diagram of the shielding mechanism in the first position in an embodiment of the present invention;

[0053] Figure 8 This is an internal schematic diagram of the shielding mechanism in the second position in an embodiment of the present invention.

[0054] Explanation of reference numerals in the attached figures:

[0055] 1. Fixing plate; 11. Annular protrusion; 111. Groove;

[0056] 2. Shielding mechanism;

[0057] 21. Sealing assembly; 211. Sealing plate; 212. Sealing groove; 213. Drain hole; 214. First mating part; 215. Second mating part;

[0058] 22. Panel; 23. Water shield; 24. Water baffle; 25. Connecting plate;

[0059] 3. Drive device. Detailed Implementation

[0060] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0061] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0062] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0063] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0064] A cut-groove riser is a type of underground shaft excavation equipment, primarily used for cutting and excavating risers when there is no overhead tunnel. The riser is powered by a rotary head that drives the drill rod to rotate and transmits propulsion force to the hydraulic cylinders. During excavation, the riser uses water to flush out rock debris and cool the drill bit.

[0065] Because the water jetting position of the cutting groove riser is above the rotary power head, the water jetting out carries rock debris and flows downward along the drill rod, which can easily lead to rock debris accumulation inside the rotary power head, thus affecting the normal operation of the equipment.

[0066] In view of this, the present invention provides a protective device for a vertical shaft drilling rig and a vertical shaft drilling rig to solve the problem of rock debris accumulation inside the rotary power head.

[0067] The following is combined Figures 1 to 8 The following describes embodiments of the present invention.

[0068] According to an embodiment of the present invention, a protective device for a vertical shaft drilling rig is provided, the protective device including a fixing plate 1 and a shielding mechanism 2.

[0069] Specifically, in this embodiment of the invention, the fixing plate 1 has a ring-shaped structure, suitable for installation on the power equipment of a vertical shaft drilling rig. A drill rod is installed on the power equipment, and the drill rod is inserted into the annular hole of the fixing plate 1 and connected to the power equipment. The power equipment is, for example, a common rotary power head.

[0070] Furthermore, in this embodiment, multiple shielding mechanisms 2 are located circumferentially around the edge of the drill rod and are movably mounted on the fixing plate 1. Each shielding mechanism 2 has a sealing component 21 on its end face near the drill rod. This embodiment does not limit the number of shielding mechanisms 2; as shown in the attached figures, four, five, six, seven, eight, or other numbers of shielding mechanisms 2 can be provided. This embodiment is merely illustrative, and those skilled in the art can modify it according to actual circumstances to achieve the same technical effect.

[0071] Furthermore, in actual operation, under the action of external force, the shielding mechanism 2 has a first position moving closer to the drill rod and a second position moving away from the drill rod. In the first position, each sealing component 21 is in contact with the drill rod, so that the sealing components 21 of multiple shielding mechanisms 2 are connected to form a sealing ring, and the shielding mechanism 2 is sealed to the fixing plate 1. Regarding the external force, the shielding mechanism 2 can be moved by a technician operating it personally, or a mechanical device can be used to drive the shielding mechanism 2 to move; this embodiment is merely an example.

[0072] With this setup, during actual operation, the shielding mechanism 2 is first moved to the first position, allowing multiple shielding mechanisms 2 to seal the drill pipe circumferentially. When the mud carrying rock cuttings flows downwards, the sealing of the shielding mechanism 2 prevents the mud from entering the gap between the power equipment and the drill pipe. Simultaneously, the shielding mechanism 2 and the fixing plate 1 directly guide the mud to the outside, preventing these foreign objects from affecting the normal operation of the equipment or causing mechanical failure. Naturally, rock cuttings will not accumulate inside the rotary power head. Furthermore, when the shielding mechanism 2 is moved to the first position, it directly adheres to the drill pipe. The power equipment, fixing plate 1, shielding mechanism 2, and drill pipe rotate synchronously, resulting in a static seal between the sealing component 21 and the drill pipe. Compared to a dynamic seal, this provides a better sealing effect, and the sealing component 21 is less prone to wear, extending its service life. Additionally, because the shielding mechanism 2 flexibly adheres to the drill pipe and has an elastic sealing ring, it has the ability to compensate for drill pipe tolerances after connection and disconnection, further ensuring performance.

[0073] Furthermore, in an optional embodiment, the movement of the blocking mechanism 2 can be arranged as follows: For example, in the first position, two adjacent blocking mechanisms 2 are close to each other and tightly fitted. In the second position, two adjacent blocking mechanisms 2 are far apart from each other and spaced apart.

[0074] During movement, a translational movement can be used, for example, by installing a slide rail and slider between the shielding mechanism 2 and the fixed plate 1 to achieve opening and closing along the radial direction of the drill pipe. Alternatively, a convergent-expansion movement can be used, similar to the convergent device of a turbofan engine nozzle. Of course, this embodiment is merely an example of the movement method of the shielding mechanism 2, and is not intended to limit it. Those skilled in the art can modify it according to actual circumstances, as long as the same technical effect is achieved.

[0075] This configuration ensures that, in the first position, adjacent shielding mechanisms 2 are close together and tightly fitted, guaranteeing a complete seal between the shielding mechanism 2 and the sealing assembly 21 between the shielding mechanism 2 and the drill pipe, forming a seamless sealing ring. This tight-fitting design effectively prevents the infiltration of any small particles or liquids, providing higher sealing reliability. The tight-fitting shielding mechanism 2 reduces the gap between the sealing assemblies 21, further reducing the risk of leakage due to pressure differences, which is especially important when operating in high-pressure environments.

[0076] Furthermore, in the second position, the spacing between the shielding mechanisms 2 allows maintenance personnel easy access to the drill pipe and other critical components, simplifying maintenance and inspection. This not only improves work efficiency but also reduces equipment downtime. After maintenance, simply moving the shielding mechanisms 2 back to the first position quickly restores the seal, eliminating the need for complex assembly steps and reducing maintenance difficulty.

[0077] Further, in an optional embodiment, the fixing plate 1 has an annular protrusion 11 on the side near the drill rod, making the cross-section of the fixing plate 1 a stepped structure. The blocking mechanism 2 is fastened to the annular protrusion 11, and the sealing component 21 is provided on the inner edge of the blocking mechanism 2 on the end face near the drill rod. The inner edge of the blocking mechanism 2 is the side or edge of the blocking mechanism 2 near the drill rod, and the outer edge of the blocking mechanism 2 is the edge or side of the blocking mechanism 2 away from the drill rod.

[0078] In this embodiment, the annular protrusion 11 on the fixed plate 1 provides a reliable mounting base for the shielding mechanism 2, ensuring that the shielding mechanism 2 can be securely fastened to the annular protrusion 11. This stable installation method effectively prevents the shielding mechanism 2 from loosening or shifting during operation, improving the stability of the entire device. Furthermore, the design of the annular protrusion 11 further seals the space between the shielding mechanism 2 and the fixed plate 1, allowing mud to flow only from the shielding mechanism 2 to the outside of the fixed plate 1, preventing it from flowing into the drill pipe and power equipment through the gap between the shielding mechanism 2 and the fixed plate 1. This effectively prevents external impurities and liquids from entering the equipment, improving the overall sealing performance.

[0079] Further, in an optional embodiment, in the first position, the outer edge of the blocking mechanism 2 is tightly fitted with the outer edge of the annular protrusion 11, and the inner edge of the blocking mechanism 2 is spaced from the inner edge of the annular protrusion 11, the distance being greater than or equal to the translational distance of the blocking mechanism 2. In the second position, the outer edge of the blocking mechanism 2 is spaced apart from the outer edge of the annular protrusion 11. Alternatively, a groove 111 can be provided on the annular protrusion 11, and a sealing strip can be installed in the groove 111 to improve the sealing between the outer edge of the blocking mechanism 2 and the outer edge of the annular protrusion 11.

[0080] With this configuration, in this embodiment, when in the first position, the outer edge of the shielding mechanism 2 is tightly fitted with the outer edge of the annular protrusion 11, forming a complete sealing barrier. This not only further ensures the sealing between the shielding mechanism 2 and the fixing plate 1, but also prevents external impurities and liquids from entering the equipment through the gap between them, improving the overall sealing effect. At the same time, the tight fit design reduces any possible leakage paths, especially when working in high-pressure or high-humidity environments, effectively preventing mud from seeping into the interior and ensuring the safe operation of the equipment.

[0081] Furthermore, in an optional embodiment, the shielding mechanism 2 includes a panel 22, a water-blocking cover 23, and a water-blocking plate 24.

[0082] Specifically, panel 22 is fastened to the annular protrusion 11, and panel 22 is provided with an outer edge and an inner edge. The sealing assembly 21 is disposed on the inner edge. Water baffle 23 is disposed at one end of panel 22 along the length direction of panel 22, and water baffle 24 is disposed at the other end of panel 22 along the length direction of panel 22.

[0083] In the first position, between two adjacent shielding mechanisms 2, the water baffle 24 of one shielding mechanism 2 is embedded in the water baffle cover 23 of the other shielding mechanism 2, and the water baffle 24 and the water baffle cover 23 are tightly fitted together.

[0084] With this configuration, in this embodiment, the water baffle 24 and the water baffle cover 23 are tightly fitted together. This interlocking structure forms a continuous waterproof barrier, effectively preventing external mud from entering the equipment and reducing any possible leakage paths. Especially when working in high pressure or high humidity environments, it can effectively prevent mud leakage and ensure the safe operation of the equipment.

[0085] Furthermore, in an optional embodiment, the blocking mechanism 2 further includes a first magnetic element and a second magnetic element.

[0086] Specifically, the first magnetic attractor is disposed on the water baffle 23, and the second magnetic attractor is disposed on the water baffle 24; the second magnetic attractor has the opposite magnetic properties to the first magnetic attractor.

[0087] In this configuration, the first and second magnetic components have opposite magnetic properties, generating a strong attraction that allows the baffle plate 24 to be securely embedded in the baffle cover 23. This magnetic fixing method not only enhances the connection stability between the baffle mechanisms 2 but also ensures that it will not easily loosen under high vibration or impact environments. Simultaneously, the magnetic force allows the baffle plate 24 and the baffle cover 23 to fit more tightly, reducing any possible leakage paths and further enhancing the sealing performance. The additional attraction force provided by the magnetic components, combined with the original mechanical fitting structure, forms a double sealing protection, ensuring good sealing performance even under extreme conditions.

[0088] Furthermore, in an optional embodiment, the sealing assembly 21 includes a sealing plate 211, a sealing groove 212, and a sealing strip.

[0089] Specifically, a sealing plate 211 is disposed on the end face of the shielding mechanism 2 near the drill rod, and the end face of the sealing plate 211 near the drill rod matches the surface of the drill rod. A sealing groove 212 is formed on the end face of the sealing plate 211 near the drill rod, and the sealing groove 212 extends circumferentially along the drill rod. A sealing strip is disposed in the sealing groove 212. In the first position, after the sealing plate 211 presses the sealing strip, it fits against the drill rod, and the sealing plates 211 of the plurality of shielding mechanisms 2 are connected to form a sealing ring.

[0090] The sealing strip can also be replaced with an inflatable and deflated airbag. Of course, this embodiment is merely illustrative and is not intended to limit the scope. Those skilled in the art can make changes according to actual circumstances, as long as the same technical effect is achieved.

[0091] Furthermore, in an optional embodiment, the sealing groove 212 is inclined in the vertical direction.

[0092] With this configuration, in this embodiment, the sealing groove 212 is inclined, so that after the slurry flows onto the sealing strip, the sealing strip will have a certain guiding effect, collecting all the slurry at the high position to the low position, and then discharging it outwards in a concentrated manner, thereby improving the overall sealing performance of the equipment.

[0093] Furthermore, in an optional embodiment, in the vertical direction, the sealing groove 212 has a drain hole 213 in the low point region; the drain hole 213 penetrates the sealing plate 211 radially along the drill rod.

[0094] With this configuration, in this embodiment, after the sealing strip collects the mud in the location area, it is discharged to the outside through the drain hole 213. This prevents excess mud from remaining between the sealing strip and the drill rod, thereby improving drainage performance and the overall sealing performance of the equipment.

[0095] Furthermore, in an optional embodiment, along the circumference of the drill rod, the two ends of the sealing plate 211 are respectively provided with a first engaging portion 214 and a second engaging portion 215, and the first engaging portion 214 and the second engaging portion 215 of two adjacent shielding mechanisms 2 are adapted to be inserted into each other.

[0096] For the specific structure of the first engaging portion 214 and the second engaging portion 215, for example, one of the first engaging portion 214 and the second engaging portion 215 is a groove 111, and the other of the first engaging portion 214 and the second engaging portion 215 is a protrusion, or both the first engaging portion 214 and the second engaging portion 215 are provided with rack-shaped edges, and the rack edges of the first engaging portion 214 and the second engaging portion 215 can mesh with each other.

[0097] Of course, this embodiment is merely an example and is not intended to limit the scope of the invention. Those skilled in the art can make changes according to the actual situation as long as the same technical effect is achieved.

[0098] In this configuration, when the first engaging portion 214 and the second engaging portion 215 of two adjacent shielding mechanisms 2 are inserted into each other, the sealing plates 211 of the multiple shielding mechanisms 2 can be tightly connected to form a complete sealing ring. This design ensures continuous sealing throughout the entire circumference, eliminates any possible leakage points, and guarantees the safe operation of the equipment. Furthermore, the insertion design of the first engaging portion 214 and the second engaging portion 215 creates a mechanical interlocking structure between adjacent shielding mechanisms 2, enhancing the stability of the connection. This design effectively prevents the shielding mechanisms 2 from misalignment or displacement due to external forces during operation, improving the reliability of the entire device.

[0099] Furthermore, in an optional embodiment, when the first engaging portion 214 and the second engaging portion 215 of two adjacent shielding mechanisms 2 are inserted into each other, the sealing strips on the two shielding mechanisms 2 partially overlap.

[0100] With this design, the overlapping joint effectively eliminates any tiny gaps between the sealing strips in this embodiment, preventing mud from seeping in through these potential leakage paths and ensuring the safe operation of the equipment more reliably.

[0101] Furthermore, in an optional embodiment, the protective device further includes a drive device 3, which is mounted on the fixed plate 1. The drive device 3 is provided with a drive end, which is connected to the connecting plate 25 on the shielding mechanism 2.

[0102] Under the driving action of the driving device 3, the connecting plate 25 drives the blocking mechanism 2 to switch between the first position and the second position.

[0103] Of course, as an alternative implementation, the fixing plate 1 can also be installed on the upper part of the slag guiding device, transforming the fixing plate 1 into a fixing frame. In this case, there is a dynamic seal between the shielding mechanism 2 and the drill rod.

[0104] Secondly, the present invention also provides a vertical shaft drilling rig, which includes a power unit and a protective device for the vertical shaft drilling rig as described in any of the above embodiments.

[0105] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A protective device for a vertical shaft drilling rig, characterized in that, include: The fixing plate (1) has a ring-shaped structure and is suitable for installation on the power equipment of the vertical shaft drilling rig; the power equipment is equipped with a drill rod, which is inserted into the annular hole of the fixing plate (1) and connected to the power equipment; Multiple shielding mechanisms (2) are located around the edge of the drill rod and are movably mounted on the fixed plate (1); the shielding mechanism (2) is provided with a sealing assembly (21) on the end face near the drill rod; Under the action of external force, the shielding mechanism (2) has a first position that moves close to the drill rod and a second position that moves away from the drill rod; in the first position, each sealing component (21) is in contact with the drill rod, so that the sealing components (21) of the multiple shielding mechanisms (2) are connected to form a sealing ring, and the shielding mechanism (2) is sealed to the fixing plate (1).

2. The protective device according to claim 1, characterized in that, In the first position, two adjacent shielding mechanisms (2) are close to each other and fit tightly together; in the second position, two adjacent shielding mechanisms (2) are far apart from each other and spaced apart.

3. The protective device according to claim 2, characterized in that, The fixing plate (1) has an annular protrusion (11) on the side near the drill rod, and the blocking mechanism (2) is fastened to the annular protrusion (11). The inner edge of the blocking mechanism (2) is provided with the sealing component (21) on the end face near the drill rod.

4. The protective device according to claim 3, characterized in that, In the first position, the outer edge of the blocking mechanism (2) is closely fitted with the outer edge of the annular protrusion (11); in the second position, the outer edge of the blocking mechanism (2) is spaced apart from the outer edge of the annular protrusion (11).

5. The protective device according to claim 4, characterized in that, The shielding mechanism (2) includes: The panel (22) is fastened to the annular protrusion (11); the panel (22) is provided with the outer edge and the inner edge; The sealing assembly (21) is disposed on the inner edge; A water shield (23) is disposed at one end of the panel (22) along the length direction of the panel (22); A baffle plate (24) is disposed at the other end of the panel (22) along the length direction of the panel (22); In the first position, between two adjacent shielding mechanisms (2), the water baffle (24) of one shielding mechanism (2) is embedded in the water baffle (23) of the other shielding mechanism (2), and the water baffle (24) and the water baffle (23) are closely fitted.

6. The protective device according to claim 5, characterized in that, The shielding mechanism (2) further includes: The first magnetic suction element is disposed on the water-blocking cover (23); A second magnetic attractor is disposed on the baffle plate (24); the magnetic properties of the second magnetic attractor are opposite to those of the first magnetic attractor.

7. The protective device according to any one of claims 1 to 6, characterized in that, The sealing assembly (21) includes: A sealing plate (211) is disposed on the end face of the shielding mechanism (2) near the drill rod; and the end face of the sealing plate (211) near the drill rod matches the surface of the drill rod. A sealing groove (212) is formed on the end face of the sealing plate (211) near the drill rod; the sealing groove (212) extends circumferentially along the drill rod; A sealing strip is provided in the sealing groove (212); In the first position, the sealing plate (211) presses against the sealing strip and then fits against the drill rod, and the sealing plates (211) of the multiple shielding mechanisms (2) are connected to form a sealing ring.

8. The protective device according to claim 7, characterized in that, The sealing groove (212) is inclined in the vertical direction.

9. The protective device according to claim 8, characterized in that, In the vertical direction, the sealing groove (212) has a drain hole (213) in the low point area; the drain hole (213) penetrates the sealing plate (211) along the radial direction of the drill rod.

10. The protective device according to claim 8 or 9, characterized in that, Along the circumference of the drill rod, the two ends of the sealing plate (211) are respectively provided with a first mating part (214) and a second mating part (215), and the first mating part (214) and the second mating part (215) of two adjacent shielding mechanisms (2) are adapted to be inserted into each other.

11. The protective device according to claim 8 or 9, characterized in that, When the first mating part (214) and the second mating part (215) of two adjacent shielding mechanisms (2) are inserted into each other, the sealing strips on the two shielding mechanisms (2) partially overlap.

12. The protective device according to any one of claims 1 to 6, characterized in that, The protective device also includes: A driving device (3) is installed on the fixed plate (1); the driving device (3) is provided with a driving end, which is connected to the connecting plate (25) on the blocking mechanism (2); Under the driving action of the driving device (3), the connecting plate (25) drives the blocking mechanism (2) to switch between the first position and the second position.

13. A vertical shaft drilling rig, characterized in that, include: Power equipment and protective devices for the vertical shaft drilling rig as described in any one of claims 1 to 12.

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