A grouting device

Abstract

The present application relates to the technical field of grouting engineering, and provides a grouting device. The grouting device comprises an outer cylinder drilling tool, a multi-stage pushing assembly, a pose adjusting assembly and a grouting system. The inner part of the outer cylinder drilling tool has a working cavity, and the side wall is provided with a working hole. The multi-stage pushing assembly is arranged in the inner part of the working cavity, the inner part of the multi-stage pushing assembly has a flow channel, and a differential pressure control valve is arranged. The multi-stage pushing assembly is used for switching between an extended state and a contracted state. In the extended state, the multi-stage pushing assembly extends to the outside of the working cavity. In the contracted state, the multi-stage pushing assembly is located in the inner part of the working cavity. The pose adjusting assembly is connected with the multi-stage pushing assembly and is used for adjusting the pose of the multi-stage pushing assembly. The grouting system is communicated with the flow channel, so that the slurry reaches the external environment. The present application solves the defects that the prior art cannot realize large-angle corner hole forming and flexible grouting in a limited space in a short distance, and realizes efficient, accurate and stable small-range multi-angle hole forming and grouting operation.

Description

Technical Field

[0001] This invention relates to the field of grouting engineering technology, and in particular to a grouting device. Background Technology

[0002] Grouting technology is widely used in reinforcement and seepage prevention operations in tunnels, mines, and underground engineering. In actual projects, complex conditions such as limited space, fractured rock masses, and large-angle drilling are often encountered, which places higher demands on the flexibility, accuracy, and adaptability of grouting equipment.

[0003] Currently, existing grouting equipment typically uses straight drilling or segmented drilling methods to create holes. During grouting, the drill rod must be pulled out before the grouting pipe is inserted. Some equipment achieves large-angle turns by adjusting the drill rod direction over a long distance at a small angle, or relies on multiple drilling operations to create corner channels. Furthermore, most existing grouting equipment uses fixed grouting heads, making it difficult to flexibly adjust the grouting angle and depth within confined spaces.

[0004] Existing grouting devices cannot achieve large-angle hole formation over short distances, and it is difficult to flexibly adjust the grouting angle and depth within a confined space, resulting in low hole formation efficiency, poor grouting accuracy, and a tendency to cause hole collapse. Summary of the Invention

[0005] This invention provides a grouting device to solve the shortcomings of existing technologies that cannot achieve large-angle hole formation over short distances and flexible grouting in confined spaces, thereby achieving efficient, accurate, and stable small-range multi-angle hole formation and grouting operations.

[0006] This invention provides a grouting device, comprising:

[0007] The outer cylinder drilling tool has an internal working chamber and at least one working hole on its side wall;

[0008] A multi-stage jacking assembly is located inside the working chamber. The multi-stage jacking assembly has a flow channel inside. The working end of the multi-stage jacking assembly is equipped with a differential pressure control valve. The differential pressure control valve is used to control the on / off state between the slurry inside the flow channel and the external environment.

[0009] A position adjustment component is disposed inside the working cavity. The position adjustment component is connected to the multi-stage jacking component and is used to adjust the position of the multi-stage jacking component so that the multi-stage jacking component and the working hole reach a preset alignment state.

[0010] The grouting system is connected to the flow channel and is used to inject grout into the flow channel and allow the grout to reach the external environment through the differential pressure control valve.

[0011] The multi-stage jacking assembly is used to switch between an extended state and a retracted state. In the extended state, the multi-stage jacking assembly extends through the working hole to the outside of the working cavity; in the retracted state, the multi-stage jacking assembly is located inside the working cavity.

[0012] According to a grouting device provided by the present invention, the multi-stage jacking assembly includes:

[0013] The base cylinder has a first hydraulic chamber inside. The base cylinder has a first interface and a second interface. Both the first interface and the second interface are connected to the flow channel. One of the first interface and the second interface is connected to the grouting system. The other of the first interface and the second interface is connected to the hydraulic system.

[0014] At least one telescopic cylinder is sequentially fitted inside the base cylinder, and the telescopic cylinder is provided with a second hydraulic chamber inside;

[0015] A hydraulic push rod is sleeved on the last stage of the telescopic cylinder and has a third hydraulic chamber inside.

[0016] The first hydraulic chamber, the second hydraulic chamber, and the third hydraulic chamber are interconnected.

[0017] According to a grouting device provided by the present invention, the differential pressure control valve includes:

[0018] A valve seat is provided on the hydraulic push rod, and the valve seat is provided with a channel;

[0019] A valve disc is located in the channel and cooperates with the valve seat to form a sealing pair;

[0020] A spring is disposed between the valve disc and the hydraulic push rod to apply a preload force to the valve disc;

[0021] When the inlet pressure of the channel exceeds the preload, the valve disc overcomes the preload and leaves the valve seat.

[0022] According to a grouting device provided by the present invention, the grouting system includes:

[0023] The grouting power unit is located outside the working chamber;

[0024] The first delivery hose passes through the working chamber, with one end connected to one of the first interface and the second interface, and the other end connected to the grouting power unit.

[0025] According to a grouting device provided by the present invention, the hydraulic system includes:

[0026] The hydraulic power unit is located outside the working chamber;

[0027] The second delivery hose passes through the working chamber, with one end connected to the other of the first and second interfaces, and the other end connected to the hydraulic power unit.

[0028] According to a grouting device provided by the present invention, the top end of the hydraulic push rod is provided with a sharp portion.

[0029] According to the grouting device provided by the present invention, a sliding assembly is further included, the sliding assembly comprising:

[0030] The track is provided on the inner wall of the working chamber along the length of the outer cylinder drill bit;

[0031] A sliding component is slidably disposed on the track, and the fixed end of the base cylinder is hinged to the sliding component.

[0032] According to a grouting device provided by the present invention, the track includes a track body, the track body is disposed on the inner wall of the working chamber, and a first groove is provided on the side of the track body away from the inner wall of the working chamber;

[0033] The sliding component includes a sliding base, which is slidably disposed in the first sliding groove, and a sliding block is provided on the side of the sliding base away from the track.

[0034] According to a grouting device provided by the present invention, the outer wall of the base cylinder is provided with a second sliding groove, and a slider is slidably mounted on the second sliding groove;

[0035] The posture adjustment assembly includes two telescopic components; one telescopic component is located between the inner wall of the working cavity and the sliding component, and is used to adjust the position of the sliding component; one end of the other telescopic component is located on the inner wall of the working cavity, and the other end is hinged to the slider.

[0036] According to a grouting device provided by the present invention, the telescopic component includes:

[0037] The driving component has one end located on the inner wall of the working chamber;

[0038] The telescopic rod has one end slidably disposed at the other end of the driving member, and the other end is connected to the sliding component or the slider. The telescopic rod is used to extend and retract under the action of the driving member.

[0039] The grouting device provided by this invention, through the cooperation of an outer cylinder drill bit and a multi-stage jacking assembly, can achieve short-distance, large-angle drilling. The position adjustment component precisely controls the extension angle of the multi-stage jacking assembly, enabling it to complete multi-angle grouting operations within a confined space, while simultaneously achieving grouting operations at different depths through different working holes. This solves the problems of existing grouting devices being unable to achieve large-angle drilling over short distances, and the difficulty in flexibly adjusting the grouting angle and depth within confined spaces, resulting in low drilling efficiency, poor grouting accuracy, and a tendency to cause hole collapse. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the multi-stage jacking assembly of the grouting device provided by the present invention in the contracted state.

[0042] Figure 2 This is a schematic diagram of the multi-stage jacking assembly of the grouting device provided by the present invention in a horizontally extended state.

[0043] Figure 3 This is a schematic diagram of the structure of the multi-stage jacking assembly of the grouting device provided by the present invention in an inclined extension state.

[0044] Figure 4 This is a schematic diagram of the structure of the multi-stage jacking assembly of the grouting device provided by the present invention.

[0045] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0046] Figure 6 This is a schematic diagram of the track structure of the grouting device provided by the present invention.

[0047] Figure 7 This is a schematic diagram of the sliding component of the grouting device provided by the present invention.

[0048] Figure 8 This is a schematic diagram of a structure that requires drilling at large angles within a short distance in real-world applications.

[0049] Figure 9 This is a schematic diagram of a structure that requires multiple drillings in a straight line in existing technologies.

[0050] Figure 10 This is a schematic diagram of a structure that requires multiple inclined drilling operations at small angles over long distances in existing technologies.

[0051] Figure 11 This is a schematic diagram of the grouting device provided by the present invention applied to grouting methods at multiple angles and different depths.

[0052] Figure label:

[0053] 100: Outer cylinder drilling tool; 110: Working chamber; 120: Working hole;

[0054] 200: Multi-stage jacking assembly; 210: Base cylinder; 220: Telescopic cylinder; 230: Hydraulic push rod; 240: Second slide rail; 250: Sliding block; 260: Differential pressure control valve; 261: Valve seat; 262: Valve disc; 263: Spring;

[0055] 300: Pose adjustment component; 310: Telescopic component; 311: Drive component; 312: Telescopic rod;

[0056] 400: Grouting system; 410: Grouting power unit; 420: First delivery hose;

[0057] 500: Hydraulic system; 510: Hydraulic power unit; 520: Second delivery hose;

[0058] 600: Sliding assembly; 610: Track; 611: Track body; 612: First slide groove; 620: Sliding component; 621: Sliding base; 622: Sliding block;

[0059] 710: Area requiring grouting; 720: Tunnel rock mass; 730: Tunnel; 740: Grouting route. Detailed Implementation

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

[0061] Traditional grouting involves drilling holes first and then injecting grout. However, in most construction environments, the bottom of the grouting area 710 is the tunnel rock mass 720, while the tunnel 730 is located on one side of the tunnel rock mass 720. The contact area between the tunnel 730 and the grouting area 710 is extremely small (e.g., Figures 8 to 11 As shown). Existing hole-forming equipment cannot achieve large-angle corner hole forming within a short distance (such as...). Figure 8 The grouting route shown is 740.

[0062] In practical engineering, situations with complex terrain and limited space are frequently encountered, such as high-rise buildings in cities, underground pipelines, tunnels, and mine shafts. Traditional methods of drilling at large angles often require multiple drilling operations in a straight line (e.g., Figure 9 The grouting route shown is 740) or multiple inclined boreholes at small angles over long distances (such as...). Figure 10 As shown in the grouting route 740, the straight-line multiple-drilling method is not only inefficient and costly, but also requires multiple movements of the drilling equipment due to the limitations of the working surface. This not only increases the construction difficulty but may also lead to longer construction time and increased costs. Long-distance drilling to achieve large-angle cornering requires a larger three-dimensional working space and places strict requirements on the sophistication and precision of the equipment, such as three-dimensional positioning of the drill bit and a remote angle control system for the drill rod.

[0063] Secondly, traditional grouting equipment cannot achieve grouting at multiple angles and depths within a confined construction space (such as...). Figure 11 The grouting route shown is 740. In confined construction spaces, such as tunnels and mines, traditional grouting methods cannot achieve inclined hole grouting due to space limitations, greatly restricting the scope and effectiveness of grouting operations. This not only limits the application of grouting technology but may also pose a potential threat to project quality.

[0064] Furthermore, drilling and grouting are often carried out separately in fractured rock masses. Traditional grouting in fractured rock masses often separates drilling and grouting (e.g., drilling with a drill rod, then pulling out the drill rod and using a grouting pipe for grouting). This method is not only inefficient, but also prone to problems such as borehole collapse and difficulty in accurately inserting the grouting pipe into the intended position in fractured rock masses. This affects the accuracy and stability of the drilling, which is detrimental to ensuring project quality and the personal safety of construction personnel.

[0065] Finally, existing grouting equipment often struggles to achieve precise grouting. For grouting projects requiring precise control, current equipment cannot accurately reach the designated area, often resulting in large-scale, wide-space grouting. This significantly impacts grouting effectiveness, wastes grouting materials and manpower, further increases construction costs, and causes economic losses. This invention provides a grouting device, which is described below in conjunction with... Figures 1-7 Describe the structure and working principle of the present invention.

[0066] Reference Figures 1 to 5The grouting device provided by the present invention includes an outer cylinder drill bit 100, a multi-stage jacking assembly 200, a position adjustment assembly 300, and a grouting system 400. The outer cylinder drill bit 100 has a working chamber 110 inside and at least one working hole 120 on its side wall, with multiple working holes 120 spaced apart along the length of the outer cylinder drill bit 100. The multi-stage jacking assembly 200 is located inside the working chamber 110 and has a flow channel inside. A differential pressure control valve 260 is provided at the working end of the multi-stage jacking assembly 200. The differential pressure control valve 260 is used to control the on / off state between the grout inside the flow channel and the external environment (specifically, a fractured rock layer). The multi-stage jacking assembly 200 is used to switch between an extended state and a contracted state. In the extended state, the multi-stage jacking assembly 200 extends through the working hole 120 to the outside of the working chamber 110; in the contracted state, the multi-stage jacking assembly 200 is located inside the working chamber 110. The position adjustment component 300 is located inside the working chamber 110 and is connected to the multi-stage jacking component 200. It is used to adjust the position of the multi-stage jacking component 200 so that it is aligned with the working hole 120 in a preset state. The grouting system 400 is connected to the flow channel and is used to inject grout into the flow channel, allowing the grout to reach the external environment through the differential pressure control valve 260. It should be noted that the grout can specifically be cement slurry with a low consistency, which will not clog the differential pressure control valve 260. In existing technology, it can be transported through a grouting pipe with a diameter of 20mm-32mm.

[0067] In operation, the outer cylinder drill bit 100 is driven by the drilling rig to enter the predetermined position in the fractured rock layer, with the working hole 120 facing the target grouting area. The position adjustment component 300 adjusts the position of the multi-stage jacking component 200 within the working chamber 110, ensuring precise alignment with the working hole 120. It should be noted that the position adjustment component 300 achieves this alignment through precise displacement control and the precise position design of the working hole 120. Once aligned, the multi-stage jacking component 200 switches from a retracted state to an extended state, passing through the working hole 120 and embedding itself into the fractured rock layer. Subsequently, the grouting system 400 delivers grout through the flow channels inside the multi-stage jacking component 200. When the pressure within the flow channels reaches a set value, the differential pressure control valve 260 opens, injecting grout into the rock fissures. After grouting is completed, the outer cylinder drill bit 100 and the multi-stage jacking component 200 are embedded within the fractured rock layer as a permanent support structure.

[0068] This invention enables short-distance, large-angle drilling through the cooperation of the outer cylinder drill bit 100 and the multi-stage jacking assembly 200. The position adjustment assembly 300 precisely controls the extension angle of the multi-stage jacking assembly 200, allowing it to complete multi-angle grouting operations within a confined space, while simultaneously achieving grouting operations at different depths through different working holes 120. The one-time extension and embedding of the outer cylinder drill bit 100 and the multi-stage jacking assembly 200 avoids rock mass disturbance associated with traditional segmented drilling, and the differential pressure control valve 260 ensures precise injection of grout into the target area under a set pressure. This structure achieves integrated drilling and grouting operations, forming a stable support network in fractured rock masses, effectively preventing hole collapse and improving grouting quality. The fixed design of the outer cylinder drill bit 100 provides stable support for the multi-stage jacking assembly 200, ensuring precise control of the grouting angle.

[0069] Reference Figure 4 In some embodiments of the present invention, the multi-stage jacking assembly 200 includes a base cylinder 210, at least one telescopic cylinder 220, and a hydraulic push rod 230. The connection structure between the base cylinder 210, the at least one telescopic cylinder 220, and the hydraulic push rod 230 can be referenced to a single-port multi-stage hydraulic cylinder. Specifically, the base cylinder 210 has a first hydraulic chamber inside, a first interface, and a second interface, both of which are connected to a flow channel. One of the first and second interfaces is connected to a grouting system 400, and the other is connected to a hydraulic system 500. The at least one telescopic cylinder 220 is sequentially sleeved inside the base cylinder 210, and the telescopic cylinder 220 has a second hydraulic chamber inside. The hydraulic push rod 230 is sleeved on the last telescopic cylinder 220 and has a third hydraulic chamber inside. A differential pressure control valve 260 is located at the end of the hydraulic push rod 230, and the first, second, and third hydraulic chambers are interconnected.

[0070] It should be noted that the multi-stage jacking assembly 200 can specifically be a single-port multi-stage hydraulic cylinder as in existing technology. When the multi-stage jacking assembly 200 is a single-port multi-stage hydraulic cylinder, its internal oil passages constitute the internal flow channels of the multi-stage jacking assembly 200. After the multi-stage jacking assembly 200 extends and embeds itself into the crushed rock layer, it can be directly connected to the grouting system 400, allowing the grout to enter the crushed rock layer through the oil passages, achieving a dual-purpose channel. It should be noted that at this time, the preset pressure of the differential pressure control valve 260 is greater than the injection pressure of the hydraulic system 500 but less than the injection pressure of the grouting system 400. This ensures that the differential pressure control valve 260 is in a closed state when injecting hydraulic oil to prevent hydraulic oil leakage, and in an open state when injecting grout to facilitate the grout entering the interior of the crushed rock layer.

[0071] In operation, the hydraulic system 500 injects hydraulic oil into the first hydraulic chamber of the base cylinder 210 through the first or second interface, pushing the outermost telescopic cylinder 220 to extend. When the telescopic cylinder 220 reaches the end of its stroke, the hydraulic oil enters the second hydraulic chamber through the internal flow channel, driving the next telescopic cylinder 220 to extend, until the hydraulic push rod 230 is fully extended, and so on. After the jacking is completed, the grouting system 400 injects grout into the crushed rock layer through the same flow channel. At this time, the differential pressure control valve 260 opens under the grouting pressure, and the grout enters the crushed rock layer through the end of the hydraulic push rod 230.

[0072] This embodiment designs the multi-stage jacking assembly 200 as a single-port multi-stage hydraulic cylinder structure, utilizing its internal flow channels to simultaneously handle hydraulic drive and grouting functions, reducing the need for external piping. The differential pressure control valve 260 automatically switches the flow state of the oil and grout based on pressure differences, ensuring both the sealing of the hydraulic expansion and contraction and enabling high-pressure grout injection. This structure eliminates the need for switching pipelines or additional interfaces during jacking and grouting processes, reducing system complexity and avoiding the risk of seal failure caused by multi-channel designs.

[0073] Reference Figure 5 In some embodiments of the present invention, the differential pressure control valve 260 includes a valve seat 261, a valve disc 262, and a spring 263. The valve seat 261 is disposed on the hydraulic push rod 230 and has a channel; the valve disc 262 is disposed in the channel and cooperates with the valve seat 261 to form a sealing pair; the spring 263 is disposed between the valve disc 262 and the hydraulic push rod 230, and is used to apply a preload force to the valve disc 262; when the inlet pressure of the channel exceeds the preload force, the valve disc 262 overcomes the preload force and leaves the valve seat 261. It should be noted that when the spring 263 applies the preload force to the valve disc 262, in the initial state, the spring 263 applies a certain tension force to the valve disc 262, thereby causing the valve disc 262 to seal the channel on the valve seat 261.

[0074] During operation, the hydraulic system 500 injects hydraulic oil into the multi-stage jacking assembly 200. Because the working pressure of the hydraulic system 500 is lower than the preload of the spring 263, the differential pressure control valve 260 remains closed. The hydraulic oil pushes the telescopic cylinders 220 of each stage out sequentially, causing the hydraulic push rod 230 to embed into the crushed rock layer. After the jacking is completed, the grouting system 400 injects grout into the multi-stage jacking assembly 200. At this time, the grout pressure exceeds the preload of the spring 263, causing the valve disc 262 to open, and the grout enters the interior of the crushed rock layer through the differential pressure control valve 260.

[0075] This embodiment achieves automatic switching between hydraulic drive and grouting processes by setting the spring preload of the differential pressure control valve 260. When the hydraulic system 500 is working, the differential pressure control valve 260 remains sealed, ensuring that all hydraulic oil is used to drive the telescopic mechanism; when the grouting system 400 is working, the higher pressure automatically opens the differential pressure control valve 260, allowing the grout to be injected smoothly. This structure can complete the function switching without manual intervention, improving work efficiency and reducing operational complexity.

[0076] Reference Figure 2 In some embodiments of the present invention, the grouting system 400 includes a grouting power unit 410 and a first delivery hose 420. The grouting power unit 410 is located outside the working chamber 110; the first delivery hose 420 passes through the working chamber 110, and one end is connected to one of the first interface and the second interface, and the other end is connected to the grouting power unit 410.

[0077] When grouting is required, the grouting power unit 410 (i.e., the grouting equipment) is activated outside the working chamber 110, delivering grout through the first delivery hose 420 to the inside of the multi-stage jacking assembly 200, and finally injecting it into the crushed rock layer through the differential pressure control valve 260 at the end of the hydraulic push rod 230. This embodiment reduces the complexity of the equipment inside the working chamber 110 by placing the grouting power unit 410 outside the working chamber 110, facilitating maintenance and operation. The design of the first delivery hose 420 penetrating the working chamber 110 achieves the connection between the internal and external grout delivery, and its flexibility can adapt to the extension and retraction of the multi-stage jacking assembly 200. This arrangement ensures stable grouting pressure delivery and avoids interference from rigid pipelines in the jacking operation, improving the system's operational reliability.

[0078] In some other possible embodiments, the first delivery hose 420 may be equipped with a quick connector located at the penetration point of the working chamber 110. The quick connector structure facilitates the installation and removal of the first delivery hose 420, allowing for quick disconnection without affecting other components when replacement or maintenance is required. Simultaneously, this design maintains the airtightness of the working chamber 110, preventing leakage of slurry or external media.

[0079] Reference Figure 2 In some embodiments of the present invention, the hydraulic system 500 includes a hydraulic power unit 510 and a second delivery hose 520. The hydraulic power unit 510 is located outside the working chamber 110; the second delivery hose 520 passes through the working chamber 110, with one end connected to the other of the first and second interfaces, and the other end connected to the hydraulic power unit 510. The hydraulic system 500 is similar to the grouting system 400; specific embodiments of the grouting system 400 can be referred to, and will not be repeated here.

[0080] Reference Figure 5In some embodiments of the present invention, the top end of the hydraulic push rod 230 is provided with a sharp part, specifically an arrow-shaped structure.

[0081] In operation, the hydraulic push rod 230 is advanced into the fractured rock layer under the drive of the multi-stage jacking assembly 200, with its pointed tip initially contacting the surface of the fractured rock layer. Due to the arrowhead-shaped structure of the pointed tip, it can generate greater pressure under the same thrust, making it easier for the hydraulic push rod 230 to penetrate the surface structure of the fractured rock layer. As the hydraulic push rod 230 continues to advance, the pointed tip guides the fractured rock layer to break up and disperse in all directions, creating a channel for subsequent grouting operations.

[0082] This embodiment significantly improves the efficiency of initial penetration of the rock fragmentation layer by incorporating an arrowhead-shaped tip at the top of the hydraulic push rod 230. The pointed tip structure concentrates the force over a smaller area, reducing propulsion resistance and guiding the direction of rock fragmentation, thus avoiding excessive lateral force. This design ensures the stability of the jacking process while reducing energy loss, enabling the multi-stage jacking assembly 200 to more effectively complete the rock fragmentation penetration operation.

[0083] In some other possible embodiments, the pointed end of the hydraulic push rod 230 may be provided with a helical groove (not shown in the figure), extending to the cylindrical section of the hydraulic push rod 230. In this embodiment, the helical groove structure generates a rotational component force during the jacking process, giving the pointed end a self-drilling effect and further improving penetration efficiency. Simultaneously, the chip removal channel formed by the helical groove can promptly discharge broken rock chips, preventing debris accumulation from affecting the propulsion effect.

[0084] Reference Figure 1 , Figure 6 and Figure 7 In some embodiments of the present invention, the grouting device further includes a sliding assembly 600, which includes a track 610 and a sliding component 620. The track 610 is disposed along the length of the outer cylinder drill bit 100 on the inner wall of the working chamber 110; the sliding component 620 is slidably disposed on the track 610, at the fixed end of the base cylinder 210 (i.e., Figure 1 The left end of the base cylinder 210 shown is hinged to the sliding component 620. The track 610 includes a track body 611, which is disposed on the inner wall of the working cavity 110. A first groove 612 is provided on the side of the track body 611 away from the inner wall of the working cavity 110. The sliding component 620 includes a sliding base 621, which is slidably disposed in the first groove 612. A sliding block 622 is provided on the side of the sliding base 621 away from the track 610.

[0085] In use, the sliding component 620 engages with the first groove 612 of the track 610 via the sliding base 621, moving along the length of the outer cylinder drill bit 100. The fixed end of the base cylinder 210 is hinged to the sliding block 622. When the multi-stage jacking assembly 200 performs telescopic operations, the sliding component 620 slides on the track 610, providing the base cylinder 210 with axial movement freedom. The track body 611 is fixed to the inner wall of the working chamber 110, ensuring that the sliding assembly 600 remains stable when subjected to the jacking reaction force.

[0086] In this embodiment, the cooperation structure between the track 610 and the sliding component 620 enables the multi-stage jacking assembly 200 to move smoothly along a predetermined trajectory. The sliding engagement between the first slide groove 612 and the sliding base 621 restricts the direction of movement, preventing radial displacement of the base cylinder 210; the hinged connection allows the base cylinder 210 to adjust its posture within a certain angle range. This structure ensures the straightness of the jacking operation while adapting to the need for fine-tuning the position during construction, thus improving operational accuracy.

[0087] In some other possible embodiments, the sliding block 622 may be provided with a lubricating grease groove, which communicates with the sliding surface of the sliding base 621. In this embodiment, the lubricating grease groove continuously supplies lubricant to the sliding surface, reducing the frictional resistance between the sliding base 621 and the first sliding groove 612, and extending the service life of the sliding assembly 600. At the same time, the lubrication structure can prevent rock debris from entering the sliding surface, ensuring smooth sliding operation.

[0088] Reference Figure 1 and Figure 4 In some embodiments of the present invention, the outer wall of the base cylinder 210 is provided with a second sliding groove 240, and the second sliding groove 240 is slidably provided with a slider 250; the position adjustment assembly 300 includes two telescopic components 310; one telescopic component 310 is disposed between the inner wall of the working cavity 110 and the sliding component 620, and is used to adjust the position of the sliding component 620; one end of the other telescopic component 310 is disposed on the inner wall of the working cavity 110, and the other end is hinged to the slider 250.

[0089] Specifically, in the initial state, the two telescopic components 310 keep the multi-stage jacking assembly 200 in a horizontal position. During use, the two telescopic components 310 work together to adjust the position and orientation of the multi-stage jacking assembly 200. When overall lifting is required, the telescopic components 310 connected to the sliding component 620 and the telescopic component 310 connected to the slider 250 extend and retract synchronously, keeping the base cylinder 210 in a horizontal position. When the tilt angle needs adjustment, the telescopic component 310 connected to the sliding component 620 is fixed, and only the extension and retraction of the telescopic component 310 connected to the slider 250 is adjusted. The tilt angle of the base cylinder 210 is changed by the sliding of the slider 250 within the second groove 240.

[0090] This embodiment achieves precise positional control of the multi-stage jacking assembly 200 through the cooperative arrangement of two telescopic components 310. The telescopic component 310 connected to the sliding component 620 provides overall support, while the telescopic component 310 connected to the slider 250 enables angle adjustment. The coordinated operation of the two ensures both lifting stability and adjustable tilt angle. The sliding engagement between the second slide groove 240 and the slider 250 provides the base cylinder 210 with horizontal freedom during angle adjustment, ensuring smooth angle adjustment.

[0091] Reference Figure 2 In some embodiments of the present invention, the telescopic component 310 includes a driving member 311 and a telescopic rod 312. One end of the driving member 311 is fixedly disposed on the inner wall of the working cavity 110; one end of the telescopic rod 312 is slidably disposed on the other end of the driving member 311, and the other end is connected to the sliding member 620 or the slider 250. The telescopic rod 312 is used to extend and retract under the action of the driving member 311.

[0092] Specifically, the drive component 311 is bolted to the inner wall of the working chamber 110. The drive component 311 adopts a hydraulic cylinder structure, and its cylinder end is provided with a mounting flange. The mounting flange is fixedly connected to the mounting seat on the inner wall of the working chamber 110 by bolts. The telescopic rod 312 is made of high-strength alloy steel. One end of the telescopic rod is provided with a piston head, which slides against the inner wall of the cylinder of the drive component 311. A sealing ring is provided on the piston head to ensure hydraulic sealing. The other end of the telescopic rod 312 is provided with a hinge seat, which is rotatably connected to the sliding component 620 or the slider 250 by a pin. The bottom of the cylinder of the drive component 311 is provided with a hydraulic oil port, which is connected to the hydraulic system through a hydraulic pipeline.

[0093] In operation, the hydraulic system supplies oil to the drive component 311 through the hydraulic port. The hydraulic oil pushes the piston head to move, causing the telescopic rod 312 to extend or retract. When the telescopic rod 312 is connected to the sliding component 620, its extension and retraction movement causes the sliding component 620 to move along the track 610. When the telescopic rod 312 is connected to the slider 250, its extension and retraction movement changes the tilt angle of the base cylinder 210 through the sliding of the slider 250 within the second slide groove 240. The coordinated movement of the two telescopic components 310 achieves the positional adjustment of the multi-stage jacking assembly 200.

[0094] This embodiment utilizes a hydraulically driven telescopic component 310 to provide stable driving force for posture adjustment. The fixed installation of the drive component 311 ensures a stable force application point, while the sliding fit between the piston head and cylinder of the telescopic rod 312 ensures smooth movement. The high-strength alloy steel telescopic rod 312 possesses sufficient rigidity and strength to withstand the reaction force generated during the jacking operation. The hinged connection allows for a certain angle change between the telescopic rod 312 and the sliding component 620 or the slider 250, adapting to position changes during posture adjustment. This structure enables precise and stable posture adjustment of the multi-stage jacking assembly 200.

[0095] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A grouting device, characterized in that, include: The outer cylinder drill bit (100) has an internal working chamber (110) and at least one working hole (120) on its side wall. A multi-stage jacking assembly (200) is disposed inside the working chamber (110). The multi-stage jacking assembly (200) has a flow channel inside. The working end of the multi-stage jacking assembly (200) is provided with a differential pressure control valve (260). The differential pressure control valve (260) is used to control the on / off state between the slurry inside the flow channel and the external environment. The pose adjustment component (300) is disposed inside the working cavity (110). The pose adjustment component (300) is connected to the multi-stage jacking component (200) and is used to adjust the pose of the multi-stage jacking component (200) so that the multi-stage jacking component (200) and the working hole (120) reach a preset alignment state. Grouting system (400), connected to the flow channel, is used to inject grout into the flow channel and allow the grout to reach the external environment through the differential pressure control valve (260); The multi-stage jacking assembly (200) is used to switch between an extended state and a retracted state. In the extended state, the multi-stage jacking assembly (200) extends through the working hole (120) to the outside of the working cavity (110). In the retracted state, the multi-stage jacking assembly (200) is located inside the working cavity (110). The multi-stage jacking assembly (200) includes a base cylinder (210), at least one telescopic cylinder (220), and a hydraulic push rod (230). The base cylinder (210) has a first hydraulic chamber inside, a first interface, and a second interface. Both the first and second interfaces are connected to the flow channel. One of the first and second interfaces is connected to the grouting system (400), and the other is connected to the hydraulic system (500). The telescopic cylinder (220) is sequentially fitted inside the base cylinder (210), and a second hydraulic chamber is provided inside the telescopic cylinder (220). The hydraulic push rod (230) is fitted onto the last stage of the telescopic cylinder (220) and has a third hydraulic chamber inside. The first, second, and third hydraulic chambers are interconnected. The grouting device further includes a sliding assembly (600), which includes a track (610) and a sliding component (620). The track (610) is disposed on the inner wall of the working chamber (110) along the length direction of the outer cylinder drill bit (100). The track (610) includes a track body (611), which is disposed on the inner wall of the working chamber (110). The track body (611) is located away from the working chamber. 110) A first groove (612) is provided on one side of the inner wall; the sliding component (620) is slidably disposed on the track (610), the fixed end of the base cylinder (210) is hinged to the sliding component (620), the sliding component (620) includes a sliding base (621), the sliding base (621) is slidably disposed on the first groove (612), and a sliding block (622) is provided on the side of the sliding base (621) away from the track (610); The outer wall of the base cylinder (210) is provided with a second sliding groove (240), and a slider (250) is slidably mounted on the second sliding groove (240); the posture adjustment assembly (300) includes two telescopic components (310); one of the telescopic components (310) is located between the inner wall of the working cavity (110) and the sliding component (620), and is used to adjust the position of the sliding component (620); one end of the other telescopic component (310) is located on the inner wall of the working cavity (110), and the other end is hinged to the slider (250). The differential pressure control valve (260) includes a valve seat (261), a valve disc (262), and a spring (263). The valve seat (261) is located on the hydraulic push rod (230) and has a channel. The valve disc (262) is located in the channel and cooperates with the valve seat (261) to form a sealing pair. The spring (263) is located between the valve disc (262) and the hydraulic push rod (230) and is used to apply a preload force to the valve disc (262). When the inlet pressure of the channel exceeds the preload force, the valve disc (262) overcomes the preload force and leaves the valve seat (261).

2. The grouting device according to claim 1, characterized in that, The grouting system (400) includes: The grouting power unit (410) is located outside the working chamber (110); The first delivery hose (420) passes through the working chamber (110), with one end connected to one of the first interface and the second interface, and the other end connected to the grouting power unit (410).

3. The grouting device according to claim 2, characterized in that, The hydraulic system (500) includes: A hydraulic power unit (510) is located outside the working chamber (110); The second delivery hose (520) passes through the working chamber (110), with one end connected to the other of the first interface and the second interface, and the other end connected to the hydraulic power unit (510).

4. The grouting device according to claim 2, characterized in that, The top of the hydraulic push rod (230) is provided with a sharp part.

5. The grouting device according to claim 1, characterized in that, The telescopic component (310) includes: The driving component (311) has one end disposed on the inner wall of the working cavity (110); The telescopic rod (312) has one end slidably disposed at the other end of the driving member (311), and the other end is connected to the sliding component (620) or the slider (250). The telescopic rod (312) is used to extend and retract under the action of the driving member (311).

Images