Grouting reverse blocking structure for isolating hydraulic support and grouting device

Abstract

The utility model relates to a grouting reverse blocking structure for an isolation hydraulic support and a grouting device. The isolation hydraulic support comprises a support tail beam and a grouting hole formed in the support tail beam. The grouting reverse blocking structure comprises a second pipe fitting, a reverse blocking assembly and a first pipe fitting, the second pipe fitting comprises a second pipe body and an annular baffle which are connected, a through hole allowing concrete slurry to circulate is formed in the annular baffle, the reverse blocking assembly comprises an ejector rod and a stop part which are connected, and the ejector rod penetrates through the through hole and the second pipe body and is used for closing or avoiding the through hole. The first pipe fitting is detachably connected to the second pipe fitting, the first pipe fitting comprises a first pipe body and an ejector rod seat arranged in the first pipe body, and the ejector rod seat is used for pushing the ejector rod to move towards one side of the filling space. According to the technical scheme, when grouting is completed, the first pipe fitting and the second pipe fitting can be detached and cleaned in time, the cleaning efficiency is improved, the time cost is saved, concrete slurry can be prevented from flowing back through the reverse blocking assembly, and safety and reliability are higher.

Description

Technical Field

[0001] The present disclosure relates to the technical field of foundation engineering, and in particular to a grouting resistance structure and a grouting device for isolating a hydraulic support. Background Art

[0002] When mining in underground coal mines, it is usually necessary to use a paste filling process to fill the space created after coal mining with concrete paste. After the concrete paste solidifies, it can replace the coal seam to achieve the supporting effect on the original coal seam roof and floor. During the concrete paste filling process, hydraulic supports are required to temporarily support the working space.

[0003] In traditional grouting pipes, grouting holes and support tail beams are usually welded together. When grouting is completed, it is necessary to wait until the concrete paste has initially solidified before cleaning the concrete paste in the grouting pipe, which significantly increases the difficulty and cycle of cleaning. If the frame is moved for cleaning before the concrete paste has initially solidified, it is easy to cause the concrete paste to flow back and gush out of the grouting hole. Utility Model Content

[0004] The purpose of the present disclosure is to provide a grouting anti-reverse structure and a grouting device for isolating a hydraulic support, wherein the grouting anti-reverse structure is convenient for timely disassembly and cleaning, so as to at least partially solve the above technical problems.

[0005] In order to achieve the above-mentioned object, according to a first aspect of the present disclosure, a grouting anti-reversal structure for isolating a hydraulic support is provided.

[0006] The isolation hydraulic support comprises: a support tail beam and a grouting hole arranged on the support tail beam;

[0007] The grouting resistance structure comprises:

[0008] The second pipe member comprises a second pipe body and an annular baffle connected to each other, wherein the annular baffle is formed with a through hole for concrete slurry to flow, the through hole is connected to the second pipe body, the second pipe body is passed through the grouting hole, and the annular baffle is stopped at a side of the bracket tail beam facing the filling space;

[0009] A reverse blocking assembly, the reverse blocking assembly comprising a push rod and a stopper connected to each other, the push rod passing through the through hole and the second tube body, the stopper being used to close or avoid the through hole on the side where the filling space is located; and

[0010] The first pipe fitting includes a first pipe body and a push rod seat arranged inside the first pipe body. The first pipe fitting is detachably connected to the second pipe fitting so that the first end of the first pipe body can be docked and connected to the end of the second pipe body away from the annular baffle. The second end of the first pipe body is used to connect a grouting branch pipe. When the first pipe body is docked with the second pipe body, the push rod seat can push the push rod to move toward one side of the filling space so that the stop part avoids the through hole. When the first pipe body is separated from the second pipe body, the push rod and the stop part can be operably reset so that the stop part closes the through hole.

[0011] Optionally, the second pipe fitting includes a locking assembly detachably connected to the first pipe fitting, the locking assembly including an anchor rod and an anchor rod cap, the first pipe fitting includes a fixing ring arranged on the outside of the first pipe body, an assembly hole is formed on the fixing ring, one end of the anchor rod is connected to the annular baffle, and the other end of the anchor rod passes through the anchor rod hole and the assembly hole on the bracket tail beam in sequence, there are two anchor rod caps and both are connected to the anchor rod, one of the anchor rod caps is located on a side of the fixing ring away from the second pipe body and is stopped by the fixing ring, and the other anchor rod cap is located on a side of the fixing ring close to the second pipe body and is stopped by the bracket tail beam.

[0012] Optionally, a first annular pad sleeved on the second tube body is provided on the side of the annular baffle facing the second tube body, the anchor rod passes through the first annular pad, and the first annular pad is located between the annular baffle and the bracket tail beam.

[0013] Optionally, the second pipe member further includes a guide member disposed inside the second pipe body, wherein the guide member has a guide hole for the push rod to pass through and a channel for the concrete slurry to flow through.

[0014] Optionally, the anti-return assembly also includes an elastic reset member and a stop member, wherein the elastic reset member is sleeved on the top rod and is located between the stop member and the guide member, and the elastic reset member is used to provide elastic force for the stop portion to move toward the through hole.

[0015] Optionally, a second annular gasket is provided at the joint between the first tube body and the second tube body.

[0016] A second aspect of the present disclosure provides a grouting device, comprising an extension pipe and a grouting resistance structure for isolating a hydraulic support as described in any of the above optional schemes, wherein the extension pipe is detachably connected to the annular baffle and communicated with the through hole.

[0017] Optionally, a limiting hole which penetrates the annular baffle plate axially is provided on the annular baffle plate, and a semi-ring groove is provided on the end face of the annular baffle plate which faces away from the second tube body; a flange is provided at one end of the extension tube, and the flange is used to be inserted into the semi-ring groove along the radial direction of the annular baffle plate, and the flange has an installation hole which is opposite to the position of the limiting hole, so that the connecting part can be inserted into the limiting hole and the installation hole in sequence.

[0018] Optionally, a branch pipe is provided on the extension pipe, and an explosive piece is provided in the branch pipe.

[0019] Optionally, there are multiple extension tubes and they are connected in sequence.

[0020] Through the above technical solution, the first pipe fitting is detachably connected to the second pipe fitting, which is convenient for timely disassembly after grouting is completed. The top rod of the anti-reversal assembly cooperates with the top rod seat provided inside the first pipe body, and the top rod is pushed to move in the direction of the filling space through the top rod seat, so that the through hole can be in an open state during grouting. When grouting is completed, the first pipe fitting is disassembled, the top rod seat is separated from the top rod, and the top rod can move in the direction of the first pipe fitting, and the through hole is closed. Therefore, the grouting anti-reversal structure provided by the present disclosure can disassemble and clean the first pipe fitting and the second pipe fitting in time when grouting is completed, and can also facilitate the cleaning of the grouting branch pipe, and can prevent the concrete slurry from flowing back, effectively improve the cleaning efficiency, and reduce the labor intensity of workers.

[0021] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0023] Figure 1 is a schematic diagram of the overall structure of an isolated hydraulic support provided in an exemplary embodiment of the present disclosure;

[0024] Figure 2 is a schematic diagram of the overall structure of the bracket tail beam provided in an exemplary embodiment of the present disclosure;

[0025] Figure 3 is a cross-sectional schematic diagram of the overall structure of the grouting resistance structure and the extension pipe provided in the exemplary embodiment of the present disclosure;

[0026] Figure 4 is a cross-sectional schematic diagram of the overall structure of the grouting resistance structure provided in the exemplary embodiment of the present disclosure when the extension pipe is not assembled;

[0027] Figure 5is a cross-sectional schematic diagram of the overall structure of a second pipe member provided in an exemplary embodiment of the present disclosure;

[0028] Figure 6 yes Figure 5 Structural diagram of the AA position in the middle;

[0029] Figure 7 is a cross-sectional schematic diagram of the overall structure of a reverse blocking assembly provided in an exemplary embodiment of the present disclosure;

[0030] Figure 8 is a cross-sectional schematic diagram of the overall structure of a first pipe member provided in an exemplary embodiment of the present disclosure;

[0031] Fig. 9 is a side view of a first pipe member provided in an exemplary embodiment of the present disclosure;

[0032] Fig.10 is a schematic structural diagram of a first annular pad provided in an exemplary embodiment of the present disclosure;

[0033] Fig.11 is a schematic structural diagram of a second annular pad provided in an exemplary embodiment of the present disclosure.

[0034] Description of Reference Numerals

[0035] 1. first pipe fitting; 11. first pipe body; 101. top rod seat; 110. second annular pad; 2. second pipe fitting; 21. second pipe body; 201. annular baffle; 201a. through hole; 201b. semi-ring groove; 201c. limit hole; 201d. welding hole; 202. guide piece; 2021. guide hole; 2022. channel; 210. first annular pad; 3. locking assembly; 301. anchor rod; 302. anchor rod cap; 3 03, fixing ring; 3031, assembly hole; 401, push rod; 4010, stopper; 402, elastic return member; 4021, spring; 410, stopper; 403, spring seat; 404, spring pin; 5, extension tube; 510, branch pipe; 520, explosive disk; 6, flange; 601, mounting hole; 602, connector; 7, isolation hydraulic support; 710, support tail beam; 720, grouting hole; 730, anchor hole. DETAILED DESCRIPTION

[0036] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0037] In the present disclosure, unless otherwise specified, "inside" and "outside" refer to the inside and outside of the contour of the corresponding component. Furthermore, the terms "first" and "second" used in the present disclosure are to distinguish one element from another and have no order or importance. In addition, when the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0038] according to Figures 1 to 11 As shown, in the first aspect of the present disclosure, there is provided a grouting resistance structure for an isolation hydraulic support, which is used to perform grouting operations on the filling space of the mine tunnel excavated by the isolation hydraulic support, consolidate and strengthen the soil, and prevent the mine tunnel from collapsing. The isolation hydraulic support includes a support tail beam 710 and a grouting hole 720 arranged on the support tail beam 710, wherein the support tail beam 710 is hinged to the tail end of the support top beam, so that the support tail beam 710 can rotate relative to the support top beam to achieve expansion or folding. When the support tail beam 710 is expanded, it can temporarily support the top wall of the mine tunnel. The grouting hole 720 is used to fill the filling space A with concrete slurry. For the specific structure of the isolation hydraulic support 7, relevant technical personnel can refer to the existing literature that has been disclosed. The present disclosure No further details will be given here; the grouting resistance structure may include a second pipe fitting 2, a first pipe fitting 1 and a resistance assembly, the second pipe fitting 2 includes a second pipe body 21 and an annular baffle 201 connected to each other, a through hole 201a for the flow of concrete slurry is formed on the annular baffle 201, the through hole 201a is connected to the second pipe body 21, the second pipe body 21 is penetrated in the grouting hole 720, for example, the second pipe body 21 can be penetrated in the grouting hole 720 from one side of the filling space A, and the annular baffle 201 is stopped on the side of the bracket tail beam 710 facing the filling space A. The reverse blocking assembly includes a connected push rod 401 and a stopper 4010, for example, the stopper 4010 can be constructed as a circular baffle, the push rod 401 passes through the through hole 201a and the second tube body 21, and the stopper 4010 is used to close or avoid the through hole 201a on the side where the filling space A is located, so as to control whether the concrete slurry flows. The first pipe 1 includes a first tube body 11 and a push rod seat 101 arranged inside the first tube body 11. The first pipe 1 is detachably connected to the second pipe 2 so that the first pipe 1 The first end C can be docked and connected to the end of the second tube body 21 away from the annular baffle 201, and the second end B of the first tube body 11 is used to connect the grouting branch pipe. When the first tube body 11 and the second tube body 21 are docked, the push rod seat 101 can push the push rod 401 to move toward one side of the filling space A so that the stop part 4010 avoids the through hole 201a. When the first tube body 11 is separated from the second tube body 21, the push rod 401 and the stop part 4010 can be operably reset so that the stop part 4010 closes the through hole 201a.

[0039] Through the above technical solution, that is, through the cooperation between the annular baffle 201 and the stopper 4010 of the push rod 401, the through hole 201a of the annular baffle 201 can be closed or opened, so that whether the concrete slurry flows can be controlled; during grouting, the push rod 401 is inserted into the inside of the second tube body 21 through the through hole 201a, and a push rod seat 101 for pushing the push rod 401 to move is provided in the first tube body 11, and the first tube body 11 is connected with the second tube body 21, and the push rod seat 101 pushes The movable push rod 401 moves toward the filling space A, the through hole 201a is opened, and the concrete slurry circulates. When the grouting is completed, the first tube body 11 is disassembled. Since the push rod 401 is not subjected to the thrust applied by the push rod seat 101, it can move toward the side away from the filling space A, and the through hole 201a of the annular baffle 201 is closed to prevent the concrete slurry from flowing back. In this way, the first tube body 11, the anti-reverse device and the inside of the second tube body 21 can be cleaned in time, saving time and labor costs and improving cleaning efficiency.

[0040] It is understandable that a shoulder may be provided in the through hole 201a to stop the stopper 4010 when the stopper 4010 is reset to close the through hole 201a, so as to prevent the stopper 4010 from passing through the through hole 201a.

[0041] In order to facilitate the disassembly of the first pipe 1, for example, in some practicable embodiments, refer to Figures 3 to 5 As shown, the second pipe fitting 2 may include a locking assembly 3 detachably connected to the first pipe fitting 1, the locking assembly 3 may include an anchor rod 301 and an anchor rod cap 302 connected to the annular baffle 201, the first pipe fitting 1 includes a fixing ring 303 arranged on the outside of the first pipe body 11, an assembly hole 3031 is formed on the fixing ring 303, one end of the anchor rod 301 is connected to the annular baffle 201, and the other end of the anchor rod 301 passes through the anchor rod hole 730 and the assembly hole 3031 on the bracket tail beam 710 in sequence, and the number of anchor rod caps 302 is two and both are connected to the anchor rod 301, One of the anchor caps 302 is located on the side of the fixing ring 303 away from the second tube body 21 and is stopped by the fixing ring 303, so that the joint between the first tube body 11 and the second tube body 21 is more tightened to prevent the first tube body 11 from separating from the second tube body 21. The other anchor cap 302 is located on the side of the fixing ring 303 close to the second tube body 21 and is stopped by the bracket tail beam 710, so that the fixation between the second pipe fitting 2 and the bracket tail beam 710 is more secure to prevent shaking between the second pipe fitting 2 and the bracket tail beam 710 during the grouting operation.

[0042] It is understandable that one end of the anchor rod 301 may be connected to the annular baffle 201 by welding, for example, referring to Figures 3 to 6As shown, a welding hole 201d for inserting the anchor rod 301 can be provided on the annular baffle 201, and the anchor rod 301 can be inserted into the welding hole 201d and welded to make the anchor rod 301 more firmly fixed; the fixing ring 303 can also be connected to the first tube body 11 by welding. Of course, the connection mode between the anchor rod 301 and the annular baffle 201 and the connection mode between the fixing ring 303 and the first tube body 11 can be adaptively adjusted according to the needs of the actual situation. For example, a plug-in hole for inserting the anchor rod 301 can be provided on the annular baffle 201, and the plug-in hole is set through the annular baffle 201, and the anchor rod 301 is fixed by the anchor rod cap 302; the fixing ring 303 can be connected to the first tube body 11 by a fixing member. The present disclosure is not limited to this.

[0043] In order to prevent the concrete slurry from leaking, some feasible methods are as follows, for example, Figure 3 and Fig.10 As shown, a first annular pad 210 sleeved on the second tube body 21 may be provided on the side of the annular baffle 201 facing the second tube body 21, the anchor rod 301 passes through the first annular pad 210, and the first annular pad 210 is located between the annular baffle 201 and the bracket tail beam 710; by providing the first annular pad 210, slurry leakage can be effectively prevented to improve the stability of the grouting anti-reverse structure disclosed in the present invention.

[0044] In addition, an isolation membrane is usually laid on the side of the bracket tail beam 710 facing the filling space A, and the second tube body 21 passes through the isolation membrane. The isolation membrane is located between the first annular pad 210 and the bracket tail beam 710. The anchor rod 301, the second tube body 21 and the annular baffle 201 fix the first annular pad 210 while also fixing the isolation membrane to prevent the isolation membrane from slipping.

[0045] Of course, in order to prevent the concrete slurry from leaking from the joint between the first tube body 11 and the second tube body 21, in some practicable ways, for example, referring to Figure 3 and Fig.11 As shown, a second annular pad 110 may be provided at the joint between the first tube body 11 and the second tube body 21 .

[0046] The structures of the first annular pad 210 and the second annular pad 110 can be adaptively adjusted according to actual conditions. For example, the first annular pad 210 and the second annular pad 110 can both be iron rings, stainless steel rings, rubber rings, etc. This disclosure does not specifically limit this.

[0047] In order to ensure that the push rod 401 located in the second tube body 21 does not deviate when it moves along the axial direction of the second tube body 21, causing the push rod 401 to be separated from the second tube body 21 or unable to be accurately reset after moving. In some practicable embodiments, for example, referring to Figures 3 to 5As shown, the second pipe 2 may further include a guide member 202 disposed inside the second pipe body 21, the guide member 202 having a guide hole 2021 for the push rod 401 to pass through and a channel 2022 for the concrete slurry to flow through, and the guide hole 2021 can effectively prevent the push rod 401 from deviating during movement.

[0048] Of course, in order to meet the above functions, the guide member 202 can be constructed to include four reinforcing rods arranged at intervals and a guide ring arranged coaxially with the second tube body 21, the four reinforcing rods are connected to the guide ring, and the top rod 401 is inserted into the guide ring to ensure that the moving track of the top rod 401 will not deviate, and the gaps between the four reinforcing rods can be channels 2022 for the flow of concrete slurry. It can be understood that the number of reinforcing rods can be adaptively adjusted according to actual conditions, for example, the number of reinforcing rods can be two or three, and the present disclosure does not make specific restrictions on this, as long as its function can be achieved.

[0049] As a preferred example, refer to Figure 8 and Fig. 9 As shown, in order to further improve the stability of the moving process of the push rod 401, a guide structure can also be provided in the first tube body 11. The guide structure can be the same as the structure of the guide member 202, and will not be described in detail in this disclosure.

[0050] When the grouting is finished, the first pipe 1 and the second pipe 2 need to be disassembled and then cleaned. In order to ensure that the top rod 401 can be reset in time when it is separated from the top rod seat 101, the stopper 4010 of the top rod 401 seals the through hole 201a to prevent the unsolidified concrete slurry from gushing out of the grouting hole 720. In some practicable embodiments, for example, referring to Figure 3 , Figure 4 and Figure 7 As shown, the anti-return component can also include an elastic return member 402 and a stop member 410. The elastic return member 402 is sleeved on the top rod 401 and is located between the stop member 410 and the guide member 202. The elastic return member 402 is used to provide an elastic force for the stop member 4010 to move toward the through hole 201a, so that when the first pipe 1 is separated from the second pipe 2, the top rod 401 can close the through hole 201a under the action of the elastic return member 402 to prevent the concrete slurry from flowing out; the stop member 410 is used to prevent the elastic return member 402 from being separated from the top rod 401, and can limit the elastic return member 402 so that the elastic return member 402 can only move between the stop member 410 and the guide member 202 to prevent the elastic return member 402 from moving too far in the direction of the top rod seat 101 and losing the return function.

[0051] The structures of the stopper 410 and the elastic reset member 402 can be adaptively adjusted according to actual conditions. Figure 3 and Figure 4 As shown, the stopper 410 can be constructed as a spring seat 403 and a spring pin 404, and the elastic reset member 402 can be constructed as a spring 4021. The spring 4021 and the spring seat 403 are both sleeved on the push rod 401. One end of the spring 4021 is connected to the spring seat 403, and the other end can be in a natural state. The spring pin 404 is arranged on the side of the spring seat 403 away from the spring 4021, and is used to limit the moving distance of the spring seat 403. When grouting is required, the push rod seat 1 01 contacts with the push rod 401, and the push rod 401 moves toward the filling space A under the action of the push rod seat 101, and the through hole 201a is in an open state. One end of the spring 4021 in a natural state contacts with the guide member 202, and the spring 4021 is compressed; when the grouting is completed, the first pipe 1 is disassembled, the push rod seat 101 is separated from the push rod 401, and the push rod 401 moves toward the direction of the first pipe 1 under the action of the spring 4021, so as to close the through hole 201a. Among them, the structure of the expansion spring pin 404 can refer to the structure of the existing spring pin, and the disclosure will not repeat it here.

[0052] In addition, in the conventional grouting operation, the concrete paste is accumulated from the support tail beam 710 and gradually flows into the filling space A from the grouting hole 720, which may easily cause the deep part of the filling space A to be unable to be completely filled.

[0053] To this end, the second aspect of the present disclosure provides a grouting device, for example, referring to Figure 3 As shown, the grouting device may include an extension pipe 5 and a grouting resistance structure for isolating the hydraulic support. The grouting resistance structure has all the beneficial effects of the above-mentioned specific embodiments. The extension pipe 5 is detachably connected to the annular baffle 201 and is connected to the through hole 201a. The provision of the extension pipe 5 is conducive to the accumulation of concrete slurry from a distance away from the filling space A to achieve complete filling of the interior of the filling space A.

[0054] In some possible implementations, for example, referring to Figure 3 As shown, the annular baffle 201 may be provided with a limiting hole 201c which penetrates the annular baffle 201 axially, and a semi-annular groove 201b is provided on the end face of the annular baffle 201 which faces away from the second tube body 21, and a flange 6 is provided at one end of the extension tube 5, and the flange 6 is used to be inserted into the semi-annular groove 201b along the radial direction of the annular baffle 201, and the flange 6 has a mounting hole 601 corresponding to the position of the limiting hole 201c, so that the connecting piece 602 can be inserted into the limiting hole 201c and the mounting hole 601 in sequence, so as to realize the connection between the extension tube 5 and the second tube body 21 and prevent the extension tube 5 from being separated from the second tube body 21 when grouting is not performed.

[0055] The connector 602 can be a wooden latch, or a screw, and the mounting hole 601 can be a threaded hole to fix the flange 6. The present disclosure is not limited thereto, and those skilled in the art can make adaptive adjustments according to actual needs.

[0056] It is understandable that in order to facilitate the installation of the extension tube 5, in some practicable ways, reference is made to Figure 3 As shown, the setting of the shoulder in the through hole 201a can make the stopper 4010 be located in the through hole 201a when closing the through hole 201a, and thereby, it can also facilitate the installation of the flange 6 when the second tube body 21 is in a closed state.

[0057] In some possible implementations, for example, referring to Figure 3 As shown, a branch pipe 510 is provided on the extension pipe 5, and an explosive piece 520 is provided in the branch pipe 510; by providing the branch pipe 510 and the explosive piece 520, it is used to prevent the resistance of the slurry outlet of the extension pipe 5 at the far end of the filling space A from being too large, thereby blocking the grouting and affecting the filling effect of the concrete slurry, so that the concrete slurry can be injected into the filling space A through the branch pipe 510 to ensure the filling effect.

[0058] It is understandable that the explosive disc 520 may be a bursting disc, which can explode at a specified pressure and temperature to reduce the pressure in the pipeline. The specific structure of the bursting disc can be referred to existing technical literature, and the present disclosure will not repeat it here.

[0059] In order to achieve grouting operation deep in the filling space A, in some practicable manners, the number of the extension pipes 5 can be multiple and connected in sequence. For example, the multiple extension pipes 5 can be connected by a flange 6, but the present disclosure is not limited thereto.

[0060] In order to adapt to the pressure at different depths in the filling space A and ensure complete grouting of the concrete slurry, the strength of the explosive piece 520 can be set to decrease from near to far to ensure that the concrete slurry starts to accumulate from the far end of the filling space A.

[0061] It should be noted that the extension tube 5 can be made of plastic material, so that after the grouting is completed, the extension tube 5 is solidified in the grouting pipeline and does not need to be used again, so as to save the disassembly and assembly time and improve the grouting efficiency.

[0062] In order to prevent the explosive piece 520 located deep in the filling space A from leaking or rupturing due to an accident, preferably, a strip that is easy to pull, such as a wire or rope, can be sleeved on the explosive piece 520, and the end of the strip that is away from the explosive piece 520 extends to the outside of the grouting hole 720 for easy manual pulling.

[0063] The present disclosure exemplarily describes the assembly process of the grouting anti-reverse structure, for example: the anchor rod 301 connected to the annular baffle 201 is passed through the anchor rod hole 730 on the bracket tail beam 710 from the side of the filling space A, at this time the second tube body 21 passes through the grouting hole 720, the top rod 401 is installed, the top rod 401 is sequentially passed through the through hole 201a of the second tube body 21 and the guide hole 2021 of the guide member 202, the spring 4021 is sleeved on the circumference of the top rod 401, the spring seat 403 is installed, so that one end of the spring 4021 is connected to the spring seat 403, and the spring pin 404 is installed on the side of the spring seat 403 away from the spring 4021. At this time, the top rod 401 is located in the through hole 201a of the annular baffle 201, the flange 6 of the extension pipe 5 is connected to the annular baffle 201, and the required installation is determined according to the actual needs. The number of extension tubes 5 installed; install the first pipe fitting 1, and penetrate the assembly hole 3031 of the fixing ring 303 arranged on the outside of the first tube body 11 into the anchor rod 301 from the side away from the filling space A, and fix the first tube body 11 and the second tube body 21 by the anchor rod cap 302, and the top rod seat 101 located inside the first tube body 11 abuts against the top rod 401, and the top rod 401 is pushed by the top rod seat 101 and moves toward the side of the filling space A, and the through hole 201a is opened, and the installation is completed; in this way, grouting operation can be carried out; after the grouting operation is completed, the anchor rod cap 302 is removed, and the first tube body 11 is separated from the second tube body 21. Since there is no force applied by the top rod seat 101, the top rod 401 moves toward the through hole 201a of the annular baffle 201 under the elastic force of the spring 4021, and the through hole 201a is closed. After the disassembly is completed, the interior of the first pipe body 11, the second pipe body 21 and the grouting branch pipe are cleaned in time.

[0064] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0065] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0066] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A grouting and reverse resistance structure for an isolation hydraulic support, the isolation hydraulic support comprising a support tail beam and a grouting hole arranged on the support tail beam, characterized in that: The grouting resistance structure comprises: The second pipe member comprises a second pipe body and an annular baffle connected to each other, wherein the annular baffle is formed with a through hole for concrete slurry to flow, the through hole is connected to the second pipe body, the second pipe body is passed through the grouting hole, and the annular baffle is stopped at a side of the bracket tail beam facing the filling space; A reverse blocking assembly, the reverse blocking assembly comprising a push rod and a stopper connected to each other, the push rod passing through the through hole and the second tube body, the stopper being used to close or avoid the through hole on the side where the filling space is located; and The first pipe fitting includes a first pipe body and a push rod seat arranged inside the first pipe body. The first pipe fitting is detachably connected to the second pipe fitting so that the first end of the first pipe body can be docked and connected to the end of the second pipe body away from the annular baffle. The second end of the first pipe body is used to connect a grouting branch pipe. When the first pipe body is docked with the second pipe body, the push rod seat can push the push rod to move toward one side of the filling space so that the stop part avoids the through hole. When the first pipe body is separated from the second pipe body, the push rod and the stop part can be operably reset so that the stop part closes the through hole.

2. The grouting anti-reversal structure for isolating hydraulic support according to claim 1, characterized in that: The second pipe fitting includes a locking assembly detachably connected to the first pipe fitting, the locking assembly includes an anchor rod and an anchor rod cap, the first pipe fitting includes a fixing ring arranged on the outside of the first pipe body, an assembly hole is formed on the fixing ring, one end of the anchor rod is connected to the annular baffle, and the other end of the anchor rod passes through the anchor rod hole and the assembly hole on the bracket tail beam in sequence, there are two anchor rod caps and both are connected to the anchor rod, one of the anchor rod caps is located on a side of the fixing ring away from the second pipe body and is stopped by the fixing ring, and the other anchor rod cap is located on a side of the fixing ring close to the second pipe body and is stopped by the bracket tail beam.

3. The grouting anti-reversal structure for isolating hydraulic support according to claim 2, characterized in that: A first annular pad sleeved on the second tube body is arranged on one side of the annular baffle plate facing the second tube body, the anchor rod passes through the first annular pad, and the first annular pad is located between the annular baffle plate and the bracket tail beam.

4. The grouting anti-reversal structure for isolating hydraulic support according to claim 1, characterized in that: The second pipe member further comprises a guide member arranged inside the second pipe body, wherein the guide member comprises a guide hole for the push rod to pass through and a channel for the concrete slurry to flow through.

5. The grouting anti-reversal structure for isolating hydraulic support according to claim 4, characterized in that: The anti-reversal component also includes an elastic reset member and a stop member. The elastic reset member is sleeved on the top rod and is located between the stop member and the guide member. The elastic reset member is used to provide elastic force for the stop portion to move toward the through hole.

6. The grouting anti-reversal structure for isolating hydraulic support according to claim 1, characterized in that: A second annular pad is disposed at the joint between the first tube body and the second tube body.

7. A grouting device, characterized in that: It comprises an extension pipe and a grouting resistance structure for isolating a hydraulic support as described in any one of claims 1 to 6, wherein the extension pipe is detachably connected to the annular baffle and communicated with the through hole.

8. The grouting device according to claim 7, characterized in that: The annular baffle is provided with a limiting hole which penetrates the annular baffle in the axial direction, and a semi-annular groove is provided on the end surface of the annular baffle which faces away from the second tube body; a flange is provided at one end of the extension tube, and the flange is used to be inserted into the semi-annular groove along the radial direction of the annular baffle, and the flange has a mounting hole which is opposite to the position of the limiting hole, so that the connecting part can be inserted into the limiting hole and the mounting hole in sequence.

9. The grouting device according to claim 8, characterized in that: The extension tube is provided with a branch tube, and an explosive piece is provided in the branch tube.

10. The grouting device according to claim 8 or 9, characterized in that: The extension tubes are multiple in number and are connected in sequence.

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