Stable and efficient deep inclined shaft grouting grounding device

Abstract

The invention relates to the technical field of grounding devices, in particular to a stable and efficient deep inclined shaft grouting grounding device.The stable and efficient deep inclined shaft grouting grounding device comprises a barrel, a core rod, a centering piece and a positioning piece, when a resistance reducing material is poured, the interior of the barrel is poured through a grouting hole in the upper end of the barrel, and when the barrel is filled with the resistance reducing material, the resistance reducing material continues to be poured into the barrel; when the positioning needle penetrates into the side wall of the inclined shaft by a preset length, the drainage hole is unplugged, so that the resistance reducing material in the barrel enters the inclined shaft through the drainage hole, and the resistance reducing material in the barrel enters the inclined shaft through the drainage hole; at the moment, the multiple positioning needles fix the cylinder at the same time, the condition that the cylinder moves upwards when the resistance reducing material is injected into the inclined shaft is prevented, meanwhile, the grouting time is shortened, the grouting effect is improved, and then the stability of the grounding device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of grounding devices, and particularly to a stable and efficient grouting grounding device for deep inclined shafts. Background Art

[0002] In the grounding systems of fields such as electric power, communication, and construction, the stability and efficiency of grounding devices are directly related to the safe operation of equipment and the reliability of the system. Traditional grounding devices mostly use hot-dip galvanized round steel, flat iron, steel pipes, or copper-plated metal materials, and are installed by drilling holes, filling them with resistance-reducing materials, and driving in the grounding body. The core problems of traditional grounding devices focus on three aspects: First, the resistance reduction efficiency is low. Due to the existence of air resistance in the grounding holes, it is difficult to completely fill the resistance-reducing materials, resulting in a significant reduction in the effective contact area between the grounding device and the original soil and a significant increase in the grounding resistance. Second, the stability of the grounding resistance is poor. The traditional construction method cannot fully spread the resistance-reducing materials and fill the cracks in the surrounding soil to form a continuous conductive root system. The existence of a large number of bubbles and voids in the holes causes the grounding resistance to be severely affected by the environmental humidity when precipitation penetrates. The change in the grounding resistance value between the dry season and the rainy season can reach more than 10 times, seriously threatening the safety and stability of system operation. Third, the service life of the device is short. The seasonal water accumulation in the grounding holes accelerates the electrochemical corrosion of the metal grounding body under the action of temperature changes.

[0003] The prior art has tried to introduce the pressure grouting method into the construction of grounding devices. The pressure grouting method evenly injects curable resistance-reducing materials into the formation through hydraulic pressure or air pressure, driving away the moisture and air between soil particles to form a dense cemented body, thereby improving the contact density between the grounding body and the soil and reducing the grounding resistance. However, when using the pressure grouting method to inject resistance-reducing materials into an inclined shaft, the traditional process requires injecting some resistance-reducing materials into the inclined shaft first, and then performing high-pressure grouting after some of the resistance-reducing materials in the shaft have solidified. During the solidification process, not only does the construction period extend, but new voids may be generated due to material shrinkage during solidification, affecting the grouting effect and further leading to unstable grounding of the grounding device. Summary of the Invention

[0004] The present invention provides a stable and efficient grouting grounding device for deep inclined shafts to solve the problem of unstable grounding that easily occurs in existing grounding devices.

[0005] The following technical solution is adopted for a stable and efficient grouting grounding device for deep inclined shafts of the present invention: A stable and efficient grouting grounding device for deep inclined shafts includes a cylinder, a core rod, a centering member, and a positioning member.

[0006] The interior of the cylinder body is hollow, and the outer diameter of the cylinder body is smaller than the inner diameter of the inclined shaft; the length of the cylinder body in the axial direction is smaller than the depth of the inclined shaft; a sealing cover is arranged at the upper end of the cylinder body, and the sealing cover can seal the opening of the inclined shaft; a grouting hole communicating inside and outside is arranged at the upper end of the cylinder body; the core rod is coaxially and fixedly connected to the cylinder body, the upper end of the core rod penetrates through the upper end of the cylinder body, and a grounding wire is connected to the upper end of the core rod; the centering member is used to position the cylinder body and the inclined shaft in a coaxial state; the positioning member includes a plurality of positioning pins, and the plurality of positioning pins are evenly distributed in the circumferential direction and the axial direction of the cylinder body; the positioning pins are telescopically arranged in the radial direction of the cylinder body, one end of the positioning pin is fixedly connected to the cylinder body, the interior of the positioning pin is hollow, and the interior of the positioning pin communicates with the interior of the cylinder body; a liquid discharge hole is arranged on the positioning pin, and initially the liquid discharge hole is in a blocked state; after injecting a resistance reducing material into the interior of the cylinder body and when the pressure of the resistance reducing material in the interior of the cylinder body gradually rises, the plurality of positioning pins simultaneously extend, and when the positioning pins penetrate into the interior of the side wall of the inclined shaft by a preset length, the resistance reducing material in the interior of the cylinder body enters the inclined shaft through the liquid discharge hole.

[0007] Further, the positioning pin includes a needle cylinder and a needle head. The interior of the needle cylinder is hollow and communicates with the interior of the cylinder body. The needle head slidably penetrates through the end of the needle cylinder, and the needle head is coaxially arranged with the cylinder body. The interior of the needle head is hollow and communicates with the interior of the cylinder body. The liquid discharge hole is arranged on the side wall of the needle head and is outside the needle cylinder. A blocking block is slidably arranged on the needle head, and the blocking block can block the liquid discharge hole and can contact the side wall of the inclined shaft.

[0008] Further, a first elastic member is arranged between the blocking block and the side wall of the needle head, and the first elastic member is used to maintain the blocking block blocking the liquid discharge hole in the initial state.

[0009] Further, a second elastic member is arranged between the interior of the needle cylinder and the end of the needle head, and the second elastic member is used to maintain the sum of the overall length of the positioning pin and the radius of the cylinder body smaller than the radius of the inclined shaft in the initial state.

[0010] Furthermore, the centering member includes a fixed ring, a sliding ring, a pressing block, and a connecting member. There are two fixed rings, and both of the two fixed rings are coaxially and fixedly connected to the outer side wall of the cylinder body. The two fixed rings are arranged at intervals; the sliding ring is coaxially and slidably connected to the outer side wall of the cylinder body, and the sliding ring is arranged above the two fixed rings; a limiting member is arranged on the outer side wall of the cylinder body, and the limiting member is used to limit the sliding amplitude of the sliding ring on the outer side wall of the cylinder body; there are multiple pressing blocks, and there are multiple groups of connecting members. Each group of connecting members connects each pressing block to the two fixed rings and one sliding ring.

[0011] Furthermore, the connecting member includes a first connecting rod and two second connecting rods. One end of the second connecting rod is hinged to the fixed ring, and the other end of the second connecting rod is hinged to the pressing block. The two second connecting rods are always in a parallel state; one end of the first connecting rod is hinged to the sliding ring, and the other end of the first connecting rod is hinged to the pressing block. There is an included angle between the first connecting rod and the second connecting rod.

[0012] Furthermore, the limiting member includes a limiting sleeve and a limiting ring. The limiting ring is coaxially and fixedly connected to the outer side wall of the cylinder body. The limiting sleeve is coaxially and fixedly connected to the sliding ring. The inner side wall of the limiting sleeve has a limiting groove with an opening facing the axis of the cylinder body; the limiting ring is arranged in the limiting groove, and the limiting ring is slidably and sealingly connected to the end face of the limiting groove; in the initial state, under the action of the self-gravity of the sliding ring and the limiting sleeve, the upper ends of the limiting ring and the limiting groove are in contact.

[0013] Furthermore, an adjusting hole communicating the limiting groove and the inside of the cylinder body is arranged on the side wall of the cylinder body, and the resistance reducing material inside the cylinder body can enter the limiting groove through the adjusting hole.

[0014] Furthermore, a friction plate is arranged on the side wall of the pressing block close to the inclined shaft.

[0015] Furthermore, a plurality of support rods are arranged inside the cylinder body. The plurality of support rods are evenly distributed in the circumferential direction of the cylinder body. Both ends of each support rod are respectively fixedly connected to the inner side wall of the cylinder body and the outer side wall of the mandrel.

[0016] The beneficial effects of the present invention are as follows: A stable and efficient grouting grounding device for deep inclined shafts of the present invention includes a cylinder body, a core rod, a centering member, and a positioning member. When conducting grounding construction in an inclined shaft, connect the grounding wire to the upper end of the core rod and insert the core rod into the interior of the cylinder body to ensure that the core rod and the cylinder body are coaxial. By setting the outer diameter of the cylinder body to be smaller than the inner diameter of the inclined shaft and setting the length of the cylinder body in the axial direction to be greater than the depth of the inclined shaft, it is ensured that the cylinder body can be smoothly inserted into the inclined shaft. By using the centering member, the cylinder body and the inclined shaft are positioned in a coaxial state, and a plurality of positioning needles are provided on the outer side wall of the cylinder body. When pouring the resistance-reducing material, first pour it into the interior of the cylinder body through the grouting hole at the upper end of the cylinder body. When the interior of the cylinder body is filled with the resistance-reducing material, continue to pour the resistance-reducing material into the interior of the cylinder body, causing the pressure of the resistance-reducing material inside the cylinder body to rise. In the initial state, the liquid discharge holes on the positioning needles are in a blocked state. As the pressure of the resistance-reducing material inside the cylinder body gradually rises, the positioning needles gradually extend radially along the cylinder body. During the elongation process of the positioning needles, the depth at which the positioning needles penetrate into the interior of the inclined shaft gradually increases. When the positioning needles penetrate into the interior of the side wall of the inclined shaft by a preset length, the blockage of the liquid discharge holes is released, enabling the resistance-reducing material inside the cylinder body to enter the interior of the inclined shaft through the liquid discharge holes. At this time, the plurality of positioning needles simultaneously fix the cylinder body, preventing the cylinder body from moving upward when injecting the resistance-reducing material into the inclined shaft, reducing the grouting time, improving the grouting effect, and further enhancing the stability of the grounding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 It is a schematic structural diagram of a stable and efficient grouting grounding device for deep inclined shafts provided by an embodiment of the present invention; Figure 2 It is a cross-sectional view of a stable and efficient grouting grounding device for deep inclined shafts provided by an embodiment of the present invention; Figure 3 It is a state diagram of a stable and efficient grouting grounding device for deep inclined shafts provided by an embodiment of the present invention when applied to an inclined shaft; Figure 4 It is a cross-sectional view of a stable and efficient grouting grounding device for deep inclined shafts provided by an embodiment of the present invention when applied to an inclined shaft; Figure 5 It is a state diagram of a stable and efficient grouting grounding device for deep inclined shafts provided by an embodiment of the present invention when applied to an inclined shaft and the needles penetrate into the interior of the inclined shaft by a preset length; Figure 6Schematic diagram of the structures of the positioning pin and the plugging block in a stable and efficient grouting grounding device for deep inclined shafts provided by an embodiment of the present invention; Figure 7 For Figure 4 Partial enlarged view at location A in Figure 8 For Figure 5 Partial enlarged view at location B in Figure 9 For Figure 5 Partial enlarged view at location C in

[0019] In the figure: 110, cylinder body; 111, grouting hole; 120, core rod; 130, grounding wire; 140, support rod; 150, positioning pin; 151, needle barrel; 152, needle tip; 160, liquid discharge hole; 170, plugging block; 171, plugging part; 172, hollow part; 180, first spring; 190, second spring; 210, fixing ring; 220, sliding ring; 230, pressing block; 240, first connecting rod; 250, second connecting rod; 260, limiting sleeve; 270, limiting ring; 280, adjusting hole; 290, friction plate. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. The "connection" and "coupling" mentioned in this application, unless otherwise specified, both include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present invention.

[0022] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0023] As Figures 1 to 9 shown, a stable and efficient deep inclined shaft grouting grounding device provided by an embodiment of the present invention includes a cylinder body 110, a core rod 120, a centering member and a positioning member.

[0024] The outer shape of the cylinder body 110 is slightly cylindrical, the inside of the cylinder body 110 is hollow, the outer diameter of the cylinder body 110 is smaller than the inner diameter of the inclined shaft, and the length of the cylinder body 110 in the axial direction is smaller than the depth of the inclined shaft, ensuring that the cylinder body 110 can be completely placed inside the inclined shaft. A sealing cover is fixedly provided at the upper end of the cylinder body 110, and the sealing cover can seal the opening of the inclined shaft, ensuring that the upper end of the inclined shaft is in a sealed state when the cylinder body 110 is placed inside the inclined shaft. A grouting hole 111 communicating inside and outside is provided at the upper end of the cylinder body 110, and the resistance reducing material can be conveyed into the cylinder body 110 through the grouting hole 111.

[0025] The core rod 120 is coaxially and fixedly connected to the cylinder body 110, and the core rod 120 penetrates through the upper end surface of the cylinder body 110, so that a part of the core rod 120 is inside the cylinder body 110 and another part of the core rod 120 is outside the cylinder body 110. A wiring terminal is provided at the upper end of the core rod 120, and the wiring terminal can be connected to the grounding wire 130. By providing the wiring terminal, it is convenient to connect the grounding wire 130 to the core rod 120. In this embodiment, a plurality of support rods 140 are provided inside the cylinder body 110, and the plurality of support rods 140 are evenly distributed in the circumferential direction of the cylinder body 110. One end of each support rod 140 is fixedly connected to the inner side wall of the cylinder body 110, and the other end of each support rod 140 is fixedly connected to the outer side wall of the core rod 120. Each support rod 140 is arranged along the radial direction of the cylinder body 110, thereby ensuring that the core rod 120 and the cylinder body 110 are in a coaxial state.

[0026] The centering member is used to position the cylinder body 110 and the inclined shaft in a coaxial state. By providing the centering member, the situation that the cylinder body 110 contacts the side wall of the inclined shaft when entering the inclined shaft is prevented. In this embodiment, the positioning member is a positioning ring, and the outer diameter of the positioning ring is equal to the inner diameter of the inclined shaft. The positioning ring is coaxially sleeved outside the cylinder body 110. By providing the positioning ring, it is ensured that when the cylinder body 110 enters the inclined shaft, the outer side wall of the cylinder body 110 contacts the inner side wall of the inclined shaft.

[0027] The positioning member includes a plurality of positioning pins 150. The plurality of positioning pins 150 can be evenly divided into multiple groups. Each group has a plurality of positioning pins 150. The positioning pins 150 in each group are evenly distributed along the circumferential direction of the cylinder 110. The multiple groups of positioning pins 150 are evenly distributed along the axial direction of the cylinder 110, so that the multiple positioning pins 150 are evenly distributed in the circumferential direction and the axial direction of the cylinder 110. The positioning pins 150 extend in the radial direction of the cylinder 110. The positioning pins 150 can be telescopic. One end of the positioning pin 150 is fixedly connected to the cylinder 110. The inside of the positioning pin 150 is hollow and is in communication with the inside of the cylinder 110. A liquid discharge hole 160 communicating inside and outside is provided on the positioning pin 150. In the initial state, the length of the positioning pin 150 is in the shortest state, and the liquid discharge hole 160 on the positioning pin 150 is in a blocked state. The length of the positioning pin 150 plus the radius of the cylinder 110 is less than the radius of the inclined shaft, ensuring that the positioning pins 150 can still be placed inside the inclined shaft after being arranged outside the cylinder 110. After the cylinder 110 enters the inside of the inclined shaft, the staff can inject a resistance reducing material into the inside of the cylinder 110 through the grouting hole 111. When the resistance reducing material enters the inside of the cylinder 110, the resistance reducing material simultaneously enters the inside of the positioning pin 150. When the inside of the cylinder 110 is completely filled with the resistance reducing material, the staff continues to inject the resistance reducing material into the inside of the cylinder 110, causing the pressure of the resistance reducing material inside the cylinder 110 to rise. Under the action of the pressure of the resistance reducing material, the multiple positioning pins 150 gradually extend. When the positioning pins 150 extend, the positioning pins 150 gradually penetrate into the side wall of the inclined shaft. When the positioning pins 150 penetrate into the inside of the side wall of the inclined shaft by a preset length, the liquid discharge holes 160 on the positioning pins 150 are unblocked. The resistance reducing material inside the cylinder 110 enters the inclined shaft through the liquid discharge holes 160, and the resistance reducing material gradually fills the inclined shaft. Since the upper end of the inclined shaft is in a state blocked by a blocking cover, when the inclined shaft is completely filled with the resistance reducing material and there is no pressure difference inside and outside the cylinder 110, the staff stops injecting the resistance reducing material into the inside of the cylinder 110, thereby completing the installation of the grounding device. By one-time casting, the grouting time is reduced, and the stability of the grounding device is improved.

[0028] The present invention provides a stable and efficient deep inclined well grouting grounding device. When grounding construction is carried out in the inclined well, the grounding wire 130 is connected to the upper end of the core rod 120, and the core rod 120 is inserted into the cylinder 110 to ensure that the core rod 120 and the cylinder 110 are in a coaxial state. By setting the outer diameter of the cylinder 110 to be smaller than the inner diameter of the inclined well, and setting the length of the cylinder 110 in the axial direction to be greater than the depth of the inclined well, it is ensured that the cylinder 110 can be smoothly inserted into the inclined well. By using a centering piece, the cylinder 110 and the inclined well are positioned in a coaxial state, and a plurality of positioning pins 150 are arranged on the outer wall of the cylinder 110. When pouring the resistance reducing material, first pour it into the cylinder 110 through the grouting hole 111 at the upper end of the cylinder 110. When the cylinder 110 is filled with the resistance reducing material, continue to pour the resistance reducing material into the cylinder 110. The resistance material causes the pressure of the resistance reducing material inside the cylinder 110 to rise. In the initial state, the drainage hole 160 on the positioning needle 150 is in a blocked state. As the pressure of the resistance reducing material inside the cylinder 110 gradually increases, the positioning needle 150 gradually extends radially along the cylinder 110. During the extension of the positioning needle 150, the depth of the positioning needle 150 penetrating into the inclined well gradually increases. When the positioning needle 150 penetrates into the inclined well side wall to a preset length, the blockage of the drainage hole 160 is released, allowing the resistance reducing material inside the cylinder 110 to enter the inclined well through the drainage hole 160. At this time, multiple positioning needles 150 fix the cylinder 110 at the same time to prevent the cylinder 110 from moving upward when the resistance reducing material is injected into the inclined well. At the same time, the grouting time is reduced, the grouting effect is improved, and the stability of the grounding device is thereby improved.

[0029] In one embodiment, the positioning needle 150 includes a syringe barrel 151 and a needle tip 152. The syringe barrel 151 is hollow inside, and the syringe barrel 151 is fixedly connected to the cylinder body 110, and the inside of the syringe barrel 151 is communicated with the inside of the cylinder body 110. The needle tip 152 is coaxially arranged with the cylinder body 110, and the needle tip 152 slidably penetrates through one end of the syringe barrel 151 away from the cylinder body 110, so that part of the needle tip 152 is inside the cylinder body 110 and the other part of the needle tip 152 is outside the cylinder body 110. Further, the needle tip 152 is hollow inside, and one end of the needle tip 152 inside the syringe barrel 151 is communicated with the inside of the syringe barrel 151. During the process of injecting the resistance reducing material into the cylinder body 110, the resistance reducing material can directly enter the inside of the syringe barrel 151 and the needle tip 152. One end of the needle tip 152 outside the syringe barrel 151 is provided as a tip, which reduces the resistance of the needle tip 152 piercing into the inside of the inclined well during the elongation process of the positioning needle 150. The liquid discharge hole 160 is arranged on the side wall of the needle tip 152, and the liquid discharge hole 160 communicates the inside and the outside of the needle tip 152. A blocking block 170 is slidably sleeved on the needle tip 152. In the initial state, the blocking block 170 is in a state of blocking the liquid discharge hole 160. When the inside of the cylinder body 110 is completely filled with the resistance reducing material, the staff continues to inject the resistance reducing material into the cylinder body 110, so that the pressure of the resistance reducing material inside the cylinder body 110 rises. Under the action of the pressure of the resistance reducing material, the needle tip 152 moves relative to the syringe barrel 151. At this time, the blocking block 170 moves synchronously with the needle tip 152. During the process of the needle tip 152 moving relative to the syringe barrel 151, the end of the needle tip 152 outside the syringe barrel 151 gradually pierces into the side wall of the inclined well. When the needle tip 152 pierces into the inside of the side wall of the inclined well, the blocking block 170 gradually contacts the side wall of the inclined well. As the needle tip 152 continues to move relative to the syringe barrel 151, the blocking block 170 remains stationary. When the needle tip 152 pierces into the inside of the side wall of the inclined well by a preset length, the blocking block 170 gradually releases the blocking of the liquid discharge hole 160, so that the resistance reducing material inside the cylinder body 110 enters the inside of the inclined well.

[0030] Further, the blocking block 170 has a blocking portion 171 and a hollowed-out portion 172. The blocking portion 171 is in a sleeve shape, and the hollowed-out portion 172 is in a block shape. The blocking portion 171 is fixedly connected to the hollowed-out portion 172, and the blocking portion 171 is coaxially and slidably connected to the needle tip 152. The hollowed-out portion 172 can contact the side wall of the inclined well. When the hollowed-out portion 172 contacts the side wall of the inclined well, the needle tip 152 can continue to pierce into the side wall of the inclined well. When the liquid discharge hole 160 on the needle tip 152 corresponds to the hollowed-out portion 172, the blocking of the liquid discharge hole 160 is released.

[0031] In one embodiment, a first elastic member is provided between the plugging block 170 and the side wall of the needle 152. The first elastic member is used to maintain the plugging block 170 in plugging the liquid discharge hole 160 in the initial state. In this embodiment, the first elastic member is the first spring 180. The first spring 180 is initially in its original length state. The first spring 180 is coaxially sleeved outside the needle 152. The first spring 180 is arranged outside the syringe barrel 151. One end of the first spring 180 is fixedly connected to the side wall of the needle 152, and the other end of the first spring 180 is fixedly connected to the plugging portion 171 of the plugging block 170. By defining the initial length of the first spring 180 and adjusting the position where the first spring 180 is connected to the needle 152, it is ensured that the liquid discharge hole 160 on the needle 152 is in a state plugged by the plugging portion 171 in the initial state.

[0032] In one embodiment, a second elastic member is provided between the inside of the syringe barrel 151 and the end of the needle 152. The second elastic member is used to maintain that the sum of the overall length of the positioning needle 150 and the radius of the barrel 110 is less than the radius of the inclined well in the initial state. In this embodiment, the second elastic member is the second spring 190. The second spring 190 is initially in its original length state. The second spring 190 is coaxially sleeved outside the needle 152. The second spring 190 is arranged inside the syringe barrel 151. One end of the second spring 190 abuts against the end of the syringe barrel 151, and the other end of the second spring 190 is fixedly connected to the end of the needle 152 inside the syringe barrel 151. By defining the initial length of the second spring 190, it is ensured that the sum of the overall length of the positioning needle 150 and the radius of the barrel 110 is less than the radius of the inclined well in the initial state, thereby ensuring that the barrel 110 can be smoothly placed inside the inclined well.

[0033] In one embodiment, the centering member includes a fixed ring 210, a sliding ring 220, a pressing block 230 and a connecting member. There are two fixed rings 210, and both of the two fixed rings 210 are coaxially and fixedly connected to the outer side wall of the cylinder 110. The two fixed rings 210 are arranged at intervals. The sliding ring 220 is coaxially and slidably connected to the outer side wall of the cylinder 110, and the sliding ring 220 is arranged above the two fixed rings 210. A limiting member is arranged on the outer side wall of the cylinder 110, and the limiting member is used to limit the sliding amplitude of the sliding ring 220 on the outer side wall of the cylinder 110. There are multiple pressing blocks 230, and there are multiple groups of connecting members. Each group of connecting members connects each pressing block 230 to the two fixed rings 210 and a sliding ring 220. By arranging multiple groups of connecting members, it is ensured that the multiple pressing blocks 230 are evenly distributed in the circumferential direction around the cylinder 110. When the cylinder 110 is not placed inside the inclined shaft and the cylinder 110 is in a vertical state, the distance between two adjacent pressing blocks 230 is in the farthest state, and moreover, the annular diameter formed by the multiple pressing blocks 230 is larger than the diameter of the inclined shaft. When it is necessary to place the cylinder 110 inside the inclined shaft, the staff squeezes the multiple pressing blocks 230, so that the sliding ring 220 slides on the cylinder 110, reducing the distance between two adjacent pressing blocks 230. When the cylinder 110 enters the inside of the inclined shaft, the side wall of the inclined shaft squeezes the multiple pressing blocks 230, so that the cylinder 110 can smoothly enter the inside of the inclined shaft.

[0034] In one embodiment, the connecting member includes a first connecting rod 240 and two second connecting rods 250. One end of the second connecting rod 250 is hinged to the fixing ring 210, and the other end of the second connecting rod 250 is hinged to the pressing block 230. The two second connecting rods 250 are always in a parallel state. One end of the first connecting rod 240 is hinged to the sliding ring 220, and the other end of the first connecting rod 240 is hinged to the pressing block 230. There is an included angle between the first connecting rod 240 and the second connecting rod 250. When the cylinder 110 is not placed inside the inclined shaft, the included angle between the first connecting rod 240 and the second connecting rod 250 is in the minimum state. When it is necessary to place the cylinder 110 inside the inclined shaft, the staff pulls the sliding ring 220 to move upward relative to the cylinder 110. Under the action of the first connecting rod 240 and the second connecting rod 250, multiple pressing blocks 230 approach the side wall of the cylinder 110. When the cylinder 110 enters the inside of the inclined shaft, under the action of the self-gravity of the sliding ring 220, it slides downward relative to the cylinder 110, so that the pressing block 230 abuts against the side wall of the inclined shaft. Under the action of the overall gravity of the cylinder 110, the cylinder 110 continues to move downward. At this time, relative movement occurs between the pressing block 230 and the side wall of the inclined shaft. Through the transmission of the first connecting rod 240 and the second connecting rod 250, a tendency for the sliding ring 220 to move upward is generated, and the extrusion force between the pressing block 230 and the side wall of the inclined shaft is reduced, thereby ensuring that the cylinder 110 can smoothly enter the inside of the inclined shaft. In this embodiment, the centering member is set as the fixing ring 210, the sliding ring 220, the pressing block 230 and the connecting member, which can adapt to inclined shafts with different diameters.

[0035] In one embodiment, the limiting member includes a limiting sleeve 260 and a limiting ring 270. The limiting ring 270 is coaxially and fixedly connected to the outer side wall of the cylinder 110. The limiting sleeve 260 is coaxially and fixedly connected to the sliding ring 220. The inner side wall of the limiting sleeve 260 has a limiting groove with an opening facing the axis of the cylinder 110. The limiting groove has a certain length in the axial direction of the cylinder 110. The limiting ring 270 is arranged in the limiting groove, and the limiting ring 270 is in sliding and sealing connection with the end face of the limiting groove. In the initial state, under the action of the self-gravity of the sliding ring 220 and the limiting sleeve 260, the limiting ring 270 abuts against the upper end of the limiting groove. When the cylinder 110 is placed inside the inclined shaft, the staff pulls the sliding ring 220 to move upward, so that the limiting ring 270 abuts against the lower end of the limiting groove, and multiple pressing blocks 230 are in the state closest to the outer side wall of the cylinder 110, which is convenient for placing the cylinder 110 inside the inclined shaft.

[0036] In one embodiment, an adjustment hole 280 communicating the limiting groove and the interior of the cylinder body 110 is provided on the side wall of the cylinder body 110. The resistance reduction material inside the cylinder body 110 can enter the limiting groove through the adjustment hole 280. When the resistance reduction material enters the interior of the cylinder body 110, the resistance reduction material can enter the limiting groove through the adjustment hole 280. The adjustment hole 280 is arranged below the limiting ring 270. Under the action of the limiting ring 270, the resistance reduction material cannot enter a part of the limiting groove above the limiting ring 270. When the interior of the cylinder body 110 is completely filled with the resistance reduction material, the staff continues to inject the resistance reduction material into the interior of the cylinder body 110, so that the pressure of the resistance reduction material inside the cylinder body 110 rises. Then the pressure of the resistance reduction material in the limiting groove below the limiting ring 270 rises, causing the sliding ring 220 to move downward relative to the cylinder body 110. Under the action of the first connecting rod 240 and the second connecting rod 250, a plurality of pressing blocks 230 further press against the side wall of the inclined shaft, further increasing the supporting force on the cylinder body 110.

[0037] In one embodiment, a friction plate 290 is provided on the side wall of the pressing block 230 close to the inclined shaft. By providing the friction plate 290, the stability of the pressing block 230 when abutting against the side wall of the inclined shaft can be ensured.

[0038] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A stable and efficient grouting grounding device for deep inclined shafts, characterized in that Comprising: A cylinder body, the interior of the cylinder body is hollow, and the outer diameter of the cylinder body is smaller than the inner diameter of the inclined shaft; The length of the cylinder body in the axial direction is smaller than the depth of the inclined shaft; a sealing cover is provided at the upper end of the cylinder body, and the sealing cover can seal the opening of the inclined shaft; a grouting hole communicating inside and outside is provided at the upper end of the cylinder body; A core rod, the core rod is coaxially and fixedly connected to the cylinder body, the upper end of the core rod penetrates through the upper end of the cylinder body, and a grounding wire is connected to the upper end of the core rod; A centering member, the centering member is used to position the cylinder body and the inclined shaft in a coaxial state; A positioning member, the positioning member includes a plurality of positioning needles, and the plurality of positioning needles are evenly distributed in the circumferential direction and the axial direction of the cylinder body; the positioning needles are telescopically arranged in the radial direction of the cylinder body, one end of the positioning needle is fixedly connected to the cylinder body, the interior of the positioning needle is hollow, and the interior of the positioning needle is communicated with the interior of the cylinder body; a liquid discharge hole is provided on the positioning needle, and it is initially set that the liquid discharge hole is in a blocked state; after injecting a resistance reducing material into the interior of the cylinder body, and when the pressure of the resistance reducing material in the interior of the cylinder body gradually rises, the plurality of positioning needles simultaneously extend. When the positioning needles penetrate into the inner side wall of the inclined shaft by a preset length, the resistance reducing material in the interior of the cylinder body enters the inclined shaft through the liquid discharge hole.

2. The stable and efficient deep inclined shaft grouting grounding device according to claim 1, characterized in that: The positioning needle includes a needle barrel and a needle head, the interior of the needle barrel is hollow, the interior of the needle barrel is communicated with the interior of the cylinder body, the needle head slidably penetrates through the end of the needle barrel, the needle head is coaxially arranged with the cylinder body, the interior of the needle head is hollow, and the interior of the needle head is communicated with the interior of the cylinder body; the liquid discharge hole is provided on the side wall of the needle head, the liquid discharge hole is located outside the needle barrel, a blocking block is slidably arranged on the needle head, the blocking block can block the liquid discharge hole, and the blocking block can contact the side wall of the inclined shaft.

3. A stable and efficient grouting grounding device for deep inclined shafts according to claim 2, characterized in that: A first elastic member is arranged between the blocking block and the side wall of the needle head, and the first elastic member is used to maintain the blocking block blocking the liquid discharge hole in the initial state.

4. A stable and efficient grouting grounding device for deep inclined shafts according to claim 2, characterized in that: A second elastic member is arranged between the interior of the needle barrel and the end of the needle head, and the second elastic member is used to maintain that the sum of the overall length of the positioning needle and the radius of the cylinder body is smaller than the radius of the inclined shaft in the initial state.

5. A stable and efficient grouting grounding device for deep inclined shafts according to claim 1, characterized in that: The centering member includes a fixed ring, a sliding ring, a pressing block and a connecting member. There are two fixed rings, and both of the two fixed rings are coaxially and fixedly connected to the outer side wall of the cylinder body, and the two fixed rings are arranged at intervals; the sliding ring is coaxially and slidably connected to the outer side wall of the cylinder body, and the sliding ring is arranged above the two fixed rings; a limiting member is provided on the outer side wall of the cylinder body, and the limiting member is used to limit the sliding amplitude of the sliding ring on the outer side wall of the cylinder body; there are a plurality of pressing blocks, and there are multiple groups of connecting members. Each group of connecting members connects each pressing block to the two fixed rings and one sliding ring.

6. The stable and efficient deep inclined shaft grouting grounding device according to claim 5, wherein: The connecting member includes a first connecting rod and two second connecting rods. One end of the second connecting rod is hinged to the fixing ring, and the other end of the second connecting rod is hinged to the pressing block. The two second connecting rods are always in a parallel state. One end of the first connecting rod is hinged to the sliding ring, and the other end of the first connecting rod is hinged to the pressing block. There is an included angle between the first connecting rod and the second connecting rod.

7. A stable and efficient grouting grounding device for deep inclined shafts according to claim 6, characterized in that: The limiting member includes a limiting sleeve and a limiting ring. The limiting ring is coaxially and fixedly connected to the outer side wall of the cylinder body. The limiting sleeve is coaxially and fixedly connected to the sliding ring. The inner side wall of the limiting sleeve has a limiting groove with an opening facing the axis of the cylinder body. The limiting ring is arranged in the limiting groove, and the limiting ring is in sliding and sealing connection with the end face of the limiting groove. In the initial state, under the action of the self-gravity of the sliding ring and the limiting sleeve, the limiting ring and the upper end of the limiting groove are in contact.

8. A stable and efficient grouting grounding device for deep inclined shafts according to claim 7, characterized in that: An adjusting hole communicating the limiting groove and the inside of the cylinder body is provided on the side wall of the cylinder body. The resistance reducing material inside the cylinder body can enter the limiting groove through the adjusting hole.

9. A stable and efficient grouting grounding device for deep inclined shafts according to claim 5, characterized in that: A friction plate is provided on the side wall of the pressing block close to the inclined shaft.

10. A stable and efficient grouting grounding device for deep inclined shafts according to claim 1, characterized in that: A plurality of support rods are arranged inside the cylinder body. The plurality of support rods are evenly distributed in the circumferential direction of the cylinder body. Two ends of each support rod are respectively fixedly connected to the inner side wall of the cylinder body and the outer side wall of the mandrel.

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