A grouting device for buildings with high deformation sensitivity

Abstract

The present invention discloses a grouting device for a highly deformable building, which belongs to the field of coal mine grouting and comprises a grouting pipe, a plurality of first auxiliary grouting pipes, a lifting plate and a hole cleaning mechanism; the plurality of first auxiliary grouting pipes are installed in an array on the grouting pipe; the lifting plate is slidably sleeved in the grouting pipe, and the height of the lifting plate is lower than the height of the upper port of the first auxiliary grouting pipe; a screw rod is provided on the lifting plate, and the screw rod is connected to the hole cleaning mechanism; the hole cleaning mechanism comprises a regulating plate, a plurality of paddles and a top piece; the regulating plate is threadedly sleeved on the outside of the screw rod, and the plurality of paddles are hinged to the bottom end of the regulating plate. The present invention provides a fixed piece and a paddle to cooperate with each other. After the top block pushes away the mortar accumulated at the second auxiliary grouting pipe port, the mortar is automatically pushed away in a direction away from the second auxiliary grouting pipe port by means of the unfolded paddles, effectively avoiding blockage of the grouting pipe port and improving the efficiency of grouting construction.

Description

Technical Field

[0001] The invention belongs to the field of coal mine grouting, and in particular relates to a grouting device under a highly deformation-sensitive building. Background Art

[0002] Grouting technology involves injecting a solidifying slurry into cracks in structures, foundations, and slopes under a certain pressure to improve the mechanical properties of the grouting material and meet functional requirements such as anti-seepage. Grouting materials fill the pores in the rock and soil, and cement and other slurries have high strength after consolidation. After filling, they form a high-strength spatial structure that can limit soil deformation and improve the rock and soil's ability to resist external forces.

[0003] In order to ensure the safety of coal mining under highly deformation-sensitive buildings, it is necessary to inject mortar into the grouting borehole to increase the safety of construction. During the grouting construction process, in order to ensure the grouting work, the grouting work of a hole section is usually carried out continuously until the end. However, in the actual grouting process, due to the fixed space of the grouting borehole, as the grouting process continues, mortar accumulation may occur at the bottom of the grouting pipe, resulting in blockage of the grouting pipe mouth, resulting in a reduction or cessation of the grouting pipe slurry output, affecting the grouting process under highly deformation-sensitive buildings. Here, a grouting device for highly deformation-sensitive buildings is proposed. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a grouting device for buildings with high deformation sensitivity.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A grouting device for a highly deformation-sensitive building, comprising a grouting pipe, a plurality of first auxiliary slurry outlet pipes, a lifting plate and a hole cleaning mechanism;

[0007] The plurality of first auxiliary slurry outlet pipe arrays are installed on the grouting pipe;

[0008] The lifting plate is slidingly sleeved in the grouting pipe, and the height of the lifting plate is lower than the height of the upper port of the first auxiliary slurry outlet pipe;

[0009] The lifting plate is provided with a screw rod, and the screw rod is connected to the hole cleaning mechanism;

[0010] The hole cleaning mechanism includes a regulating plate, a plurality of paddles and a top piece;

[0011] The regulating plate is threadedly sleeved on the outside of the screw rod, and a plurality of paddles are hinged at the bottom end of the regulating plate, and a plurality of springs are fixedly connected between the side of the paddles close to the screw rod and the regulating plate;

[0012] The top piece is fixedly connected to the bottom end of the screw rod.

[0013] Furthermore, a motor is fixedly installed on the top of the lifting plate, an output end of the motor is fixedly connected to a rotating shaft, and the rotating shaft passes through the lifting plate, and a speed regulator is connected between the rotating shaft and the screw rod.

[0014] Furthermore, the external fixed sleeve of the rotating shaft is provided with a connecting sleeve, the external sliding sleeve of the connecting sleeve is provided with a flow limiting disk, and the flow limiting disk is located below the lifting plate, and four through openings are arranged in an array on the flow limiting disk, and a second auxiliary slurry outlet pipe is provided below the through opening, and the top end of the second auxiliary slurry outlet pipe is fixedly connected to the flow limiting disk.

[0015] Furthermore, the inner diameter of the through opening is consistent with the inner diameter of the first auxiliary slurry outlet pipe, and the bottom end of the second auxiliary slurry outlet pipe is higher than the bottom end of the grouting pipe.

[0016] Furthermore, the wall array of the grouting pipe is provided with a plurality of movable slots, and the flow limiting disc is movable through the movable slots.

[0017] Furthermore, the internal fixed sleeve of the grouting pipe is provided with a conical material guide block, the bottom end of the conical material guide block is fixedly connected to a plurality of push rod motors distributed in an array, and the output end of the push rod motor is fixedly connected to the lifting plate.

[0018] Furthermore, the external fixed sleeve of the grouting pipe is provided with a protective cover, and the outer diameter of the protective cover is smaller than the inner diameter of the grouting borehole, wherein the flow limiting disk is rotatably connected to the protective cover.

[0019] Furthermore, the lifting plate is provided with a plurality of first sliders in a circumferential array, the regulating plate is provided with a plurality of second sliders in a circumferential array, the inner wall array of the grouting pipe is provided with a plurality of slide grooves, and the first sliders and the second sliders are respectively slidably connected to the slide grooves.

[0020] Furthermore, the external fixing sleeve of the grouting pipe is provided with a stabilizing frame, and the bottom end of the stabilizing frame is arranged above the grouting borehole.

[0021] Beneficial effects of the present invention:

[0022] 1. The present invention provides a fixed piece and a paddle that cooperate with each other. After the top block pushes away the mortar accumulated at the second auxiliary slurry outlet, the expanded paddle automatically pushes the mortar away from the second auxiliary slurry outlet, effectively avoiding blockage of the slurry outlet and improving grouting construction efficiency.

[0023] 2. The present invention controls the rotation of the flow limiting disk to change the overlap between the bottom end of the first auxiliary slurry outlet pipe and the top end of the second auxiliary slurry outlet pipe, thereby realizing automatic regulation of the slurry outlet amount. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 It is a structural diagram of the grouting mechanism;

[0027] Figure 3 It is a partial structural diagram of the grouting mechanism;

[0028] Figure 4 It is a partial structural diagram of the grouting pipe;

[0029] Figure 5 It is a schematic diagram of the internal structure of the grouting pipe;

[0030] Figure 6 is a top view of the restrictor disc;

[0031] Figure 7 It is a structural diagram of the hole cleaning mechanism in the closed state;

[0032] Figure 8 It is a structural diagram of the hole cleaning mechanism in the expanded state;

[0033] Figure 9 It is a schematic diagram of the internal structure of the hole cleaning mechanism.

[0034] Description of the numbers in the figure:

[0035] 1. Grouting pipe; 2. Stabilizing frame; 3. Grouting drilling; 4. Protective cover; 5. Second auxiliary slurry outlet pipe; 6. First auxiliary slurry outlet pipe; 7. Flow limiting plate; 8. Hole cleaning mechanism; 801. Control plate; 802. Paddle; 803. Top piece; 804. Spring; 9. Through port; 10. Conical guide block; 11. Push rod motor; 12. Motor; 13. Lifting plate; 14. Connecting sleeve; 15. Speed ​​regulator; 16. Screw; 17. Slurry outlet; 18. Movable slot; 19. Slide; 20. Rotating shaft. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0038] like Figures 1 to 9 As shown, a grouting device for a highly deformation-sensitive building includes a grouting pipe 1, one end of the grouting pipe 1 is connected to a grouting machine, and the other end of the grouting pipe 1 extends into a grouting borehole 3. A stabilizing frame 2 is provided on the outer fixing sleeve of the grouting pipe 1, and the bottom end of the stabilizing frame 2 is mounted above the grouting borehole 3 for fixing the grouting pipe 1.

[0039] The grouting pipe 1 has four slurry outlets 17 arranged in a circumferential array on its wall. Four first auxiliary slurry outlet pipes 6 are connected to its outer wall array, and the first auxiliary slurry outlet pipes 6 are communicated with the slurry outlets 17. The external fixed sleeve of the grouting pipe 1 is provided with a protective cover 4, and the outer diameter of the protective cover 4 is smaller than the inner diameter of the grouting borehole 3, which is used to protect the first auxiliary slurry outlet pipe 6 and reduce the collision between the first auxiliary slurry outlet pipe 6 and the inner wall of the grouting borehole 3.

[0040] Those skilled in the art should know that the number of the first auxiliary slurry pipes 6 in the above embodiment is not limited to four. For example, one or more, or less than four, can also achieve the effect of injecting mortar into the grouting borehole 3, but the slurry output is lower. On the other hand, the number of the first auxiliary slurry pipes 6 is four or more, which can also achieve the effect of injecting mortar into the grouting borehole 3. Generally speaking, the more the number, the higher the slurry output and the higher the grouting efficiency. The actual number design is adjusted according to cost and demand.

[0041] The internal fixed sleeve of the grouting pipe 1 is provided with a conical guide block 10, and the lower surface of the conical guide block 10 is flush with the lowest point of the slurry outlet 17. The conical guide block 10 is in the shape of a cone, wherein the conical guide block 10 can block the mortar on the conical guide block 10 on the one hand, and on the other hand, it can guide the mortar toward the four first auxiliary slurry outlet pipes 6.

[0042] The lower end of the conical guide block 10 is bolted to a plurality of push rod motors 11 distributed in an array. The output end of the push rod motor 11 is fixedly connected to a lifting plate 13. A plurality of first sliders are arranged in a circumferential array on the lifting plate 13. A plurality of slide grooves 19 are arranged in an inner wall array of the grouting pipe 1, and the first sliders are slidably connected to the slide grooves 19. A motor 12 is fixedly installed on the top of the lifting plate 13. The output end of the motor 12 is fixedly connected to a rotating shaft 20, and the rotating shaft 20 passes through the lifting plate 13. The external fixed sleeve of the rotating shaft 20 is provided with a connecting sleeve 14, and the external sliding sleeve of the connecting sleeve 14 is provided with a flow limiting disk 7, and the flow limiting disk 7 is located below the lifting plate 13. The flow limiting disk 7 is rotatably connected to the protective cover 4. A plurality of movable slots 18 are arranged in an array on the wall of the grouting pipe 1, and the flow limiting disk 7 moves through the movable slot 18.

[0043] Those skilled in the art should be aware that when implementing the above-mentioned technical solution, the above-mentioned push rod motor 11 and the conical guide block 10 are not limited to being fixed by bolts, and other connection methods can also be used to achieve fixation, for example, riveting, riveting and welding mixed connection, welding connection, etc.

[0044] In addition, when implementing the above-mentioned technical solution, the shape of the above-mentioned conical guide block 10 is not limited to a cone. Other shapes can also achieve the function of guiding and blocking the mortar. For example, a truncated cone, a prism, a truncated pyramid, etc. can all achieve the function of guiding and blocking the mortar.

[0045] Four through openings 9 are arranged in an array on the flow limiting disk 7, and the inner diameter of the through opening 9 is consistent with the inner diameter of the first auxiliary slurry outlet pipe 6. A second auxiliary slurry outlet pipe 5 is provided below the through opening 9, and the top end of the second auxiliary slurry outlet pipe 5 is fixedly connected to the flow limiting disk 7, wherein the bottom end of the second auxiliary slurry outlet pipe 5 is higher than the bottom end of the grouting pipe 1.

[0046] During normal grouting, the four openings 9 on the flow limiting plate 7 are aligned with the bottom ends of the four first auxiliary slurry outlet pipes 6 respectively. At this time, the first auxiliary slurry outlet pipes 6 are connected to the second auxiliary slurry outlet pipes 5, and the mortar can be smoothly poured into the grouting borehole 3.

[0047] A speed regulator 15 is fixedly mounted on the bottom end of the rotating shaft 20 , and a screw rod 16 is fixedly connected to the output end of the speed regulator 15 , wherein the speed regulator 15 is used to increase the rotation speed of the screw rod 16 , and the screw rod 16 is connected to the hole cleaning mechanism 8 .

[0048] The hole cleaning mechanism 8 includes a regulating plate 801 threadedly sleeved on the outside of the screw rod 16, and a plurality of second sliders are connected to the upper circumferential array of the regulating plate 801, and the second sliders are slidably connected to the slide groove 19. The lower surface of the regulating plate 801 is hinged with a plurality of axially distributed paddles 802, and the paddles 802 are fixedly connected to the regulating plate 801 on the side close to the screw rod 16. A plurality of springs 804 are fixedly connected to the regulating plate 801. The bottom end of the screw rod 16 is welded with a top piece 803. The lower part of the top piece 803 is conical in shape, which is convenient for pushing away the piled mortar. The upper part of the top piece 803 is frustum-shaped, and the bottom end of the paddle 802 contacts the upper part of the top piece 803. When the regulating plate 801 drops to the lowest position, the top piece 803 blocks the multiple paddles 802, automatically pushing the scattered mortar outward, and preventing the mortar from accumulating at the bottom end of the second auxiliary slurry discharge pipe 5 and affecting the slurry discharge amount.

[0049] When implementing the above technical solution, those skilled in the art should be aware that the top piece 803 and the screw rod 16 are not limited to being fixed by welding, and other connection methods can also be used to achieve fixation, for example, riveting, riveting and welding mixed connection, bolt connection, etc.

[0050] After the grouting pipe 1 is inserted into the grouting borehole 3, the grouting operation is carried out. When a large amount of mortar in the grouting borehole 3 accumulates at the bottom slurry outlet of the second auxiliary slurry outlet pipe 5, causing the grouting amount to decrease continuously, it is necessary to start the push rod motor 11, and push the lifting plate 13 downward by the push rod motor 11, thereby controlling the motor 12 to descend, and then push the regulating plate 801, the paddle 802 and the top piece 803 to descend synchronously through the rotating shaft 20 and the screw rod 16. In the process of the top piece 803 extending out of the grouting pipe 1, the conical surface of the lower part of the top piece 803 automatically pushes away the piles of mortar accumulated at the bottom slurry outlet of the second auxiliary slurry outlet pipe 5, and then turn off the push rod motor 11, and control the output shaft of the motor 12 to rotate forward, thereby driving the rotating shaft 20 to rotate forward, thereby controlling the connecting sleeve 14 to rotate forward, causing the flow restricting plate 7 to rotate, so that the through port 9 is staggered with the bottom outlet of the first auxiliary slurry outlet pipe 5, reducing or closing the mortar output, which is beneficial for the hole cleaning mechanism 8 to clean the grouting borehole 3.

[0051] At the same time, the rotating shaft 20 also controls the screw rod 16 to accelerate forward rotation through the speed regulator 15, thereby controlling the control plate 801 to descend, so that the paddle 802 is expanded under the blocking action of the top member 803, automatically pushing the scattered mortar outward, and preventing the mortar from accumulating at the bottom end of the second auxiliary slurry discharge pipe 5, affecting the slurry discharge amount.

[0052] After the hole is cleaned, the output shaft of the control motor 12 is reversed. At this time, the screw rod 16 controls the regulating plate 801 to rise. At this time, the paddle 802 is closed under the elastic tension of the spring 804. At the same time, the flow limiting disk 7 is controlled to reverse through the connecting sleeve 14, so that the through port 9 returns to the initial state. At this time, the through port 9 is aligned with the bottom port of the first auxiliary slurry outlet pipe 6, so that the first auxiliary slurry outlet pipe 6 and the second auxiliary slurry outlet pipe 5 are connected, and the slurry is discharged smoothly. Finally, the push rod motor 11 pulls the lifting plate 13, thereby controlling the top piece 803 to retract into the grouting pipe 1.

[0053] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0054] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A grouting device for a highly sensitive deformation building, characterized in that: It comprises a grouting pipe (1), a plurality of first auxiliary slurry outlet pipes (6), a lifting plate (13) and a hole cleaning mechanism (8); The plurality of first auxiliary slurry outlet pipes (6) are installed in an array on the grouting pipe (1); The lifting plate (13) is slidably sleeved in the grouting pipe (1), and the height of the lifting plate (13) is lower than the height of the upper end of the first auxiliary slurry outlet pipe (6); A screw rod (16) is provided on the lifting plate (13), and the screw rod (16) is connected to the hole cleaning mechanism (8); The hole cleaning mechanism (8) comprises a regulating plate (801), a plurality of paddles (802) and a top member (803); The regulating plate (801) is threadedly sleeved on the outside of the screw rod (16), and a plurality of paddles (802) are hinged to the bottom end of the regulating plate (801), and a plurality of springs (804) are fixedly connected between the side of the paddles (802) close to the screw rod (16) and the regulating plate (801); The top member (803) is fixedly connected to the bottom end of the screw rod (16).

2. A grouting device for a highly sensitive deformation building according to claim 1, characterized in that: A motor (12) is fixedly mounted on the top of the lifting plate (13); a rotating shaft (20) is fixedly connected to the output end of the motor (12); the rotating shaft (20) passes through the lifting plate (13); and a speed regulator (15) is connected between the rotating shaft (20) and the screw rod (16).

3. The grouting device for a highly sensitive deformation building according to claim 2, characterized in that: The external fixed sleeve of the rotating shaft (20) is provided with a connecting sleeve (14), the external sliding sleeve of the connecting sleeve (14) is provided with a flow limiting disk (7), and the flow limiting disk (7) is located below the lifting plate (13), and four through openings (9) are arranged in an array on the flow limiting disk (7), and a second auxiliary pulp outlet pipe (5) is provided below the through opening (9), and the top end of the second auxiliary pulp outlet pipe (5) is fixedly connected to the flow limiting disk (7).

4. The grouting device for a highly sensitive deformation building according to claim 3, characterized in that: The inner diameter of the through opening (9) is consistent with the inner diameter of the first auxiliary slurry outlet pipe (6), and the bottom end of the second auxiliary slurry outlet pipe (5) is higher than the bottom end of the grouting pipe (1).

5. The grouting device for a highly sensitive deformation building according to claim 1, characterized in that: The wall array of the grouting pipe (1) is provided with a plurality of movable slots (18), and the flow limiting disc (7) movably passes through the movable slots (18).

6. The grouting device for a highly sensitive deformation building according to claim 1, characterized in that: The internal fixed sleeve of the grouting pipe (1) is provided with a conical material guide block (10), the bottom end of the conical material guide block (10) is fixedly connected to a plurality of push rod motors (11) distributed in an array, and the output end of the push rod motor (11) is fixedly connected to the lifting plate (13).

7. The grouting device for a highly sensitive deformation building according to claim 5, characterized in that: The external fixed sleeve of the grouting pipe (1) is provided with a protective cover (4), and the outer diameter of the protective cover (4) is smaller than the inner diameter of the grouting borehole (3), and the flow limiting disc (7) is rotatably connected to the protective cover (4).

8. The grouting device for a highly sensitive deformation building according to claim 1, characterized in that: The lifting plate (13) is provided with a plurality of first sliders in a circumferential array, the regulating plate (801) is provided with a plurality of second sliders in a circumferential array, the inner wall array of the grouting pipe (1) is provided with a plurality of chute (19), and the first sliders and the second sliders are respectively slidably connected to the chute (19).

9. The grouting device for a highly sensitive deformation building according to claim 1, characterized in that: The external fixing sleeve of the grouting pipe (1) is provided with a stabilizing frame (2), and the bottom end of the stabilizing frame (2) is mounted above the grouting borehole (3).

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