Intelligent reinforcing device for expansive soil foundation

Abstract

The invention relates to the technical field of foundation reinforcement, and particularly discloses an expansive soil foundation intelligent reinforcement device which comprises a walking table and a reinforcement unit movably arranged at the advancing end of the walking table. A first plugging member; a second plugging member; a grouting piece; a first guide; and a second guide. The two ends of a to-be-reinforced crack are plugged through a first plugging piece and a second plugging piece, the crack is segmented, each segment of the crack is relatively sealed and separated from other areas, slurry is prevented from overflowing towards through areas on the two sides in the grouting process, and it is ensured that a target crack segment can be accurately filled with a grouting material; the first guide piece and the second guide piece can generate self-adaptive offset relative to the base table in the direction perpendicular to the feeding route of the walking table according to the change of the extension path of the crack, it is ensured that the first plugging piece and the second plugging piece are accurately inserted into the crack all the time, and meanwhile the grouting piece can accurately cover the opening of the current crack section; and the precision of crack grouting reinforcement is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of foundation reinforcement, and more particularly to an intelligent reinforcement device for an expansive soil foundation. Background Art

[0002] Expansive soil foundations are composed of expansive soil. Its core characteristic is that the soil undergoes significant volume expansion and contraction when its moisture content changes. Cracks caused by the dry-wet cycle of expansive soil typically exhibit long-distance extension, multi-directional bifurcation, and irregular curvature.

[0003] Conventional grouting equipment uses an integral sealing structure, which makes it difficult to effectively isolate crack sections during the grouting process, resulting in a large amount of slurry flowing along the through cracks to non-target areas. Especially in cracks longer than 5 meters, the slurry diffuses longitudinally before solidifying, resulting in a material waste rate of over 40%. In addition, the reinforcement body forms structural weaknesses due to discontinuous filling.

[0004] In addition, existing grouting reinforcement equipment lacks a path adaptation mechanism. When the direction of the crack deviates from the preset trajectory, the rigid mobile platform cannot correct its direction of travel in real time, resulting in a positioning deviation of 10-15 cm between the sealing component and the crack opening, and the grouting coverage rate drops to less than 60%. These technical defects seriously restrict the reinforcement quality and engineering safety of infrastructure in expansive soil areas. Summary of the Invention

[0005] In order to overcome the above technical problems, the present invention proposes an intelligent reinforcement device for expansive soil foundation.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] An intelligent reinforcement device for an expansive soil foundation includes a walking platform and a reinforcement unit movably arranged at the forward end of the walking platform, wherein the reinforcement unit includes:

[0008] abutment;

[0009] A first blocking member is laterally movably disposed on one side of the base, and is used to block one side of the crack to be reinforced;

[0010] A second blocking member is laterally movably disposed on the other side of the base, and is used to block the other side of the crack to be reinforced;

[0011] A grouting member is provided between the first blocking member and the second blocking member, and is used for grouting and reinforcing the crack between the first blocking member and the second blocking member;

[0012] a first guiding member, which is movably disposed on the first blocking member and is used to guide the first blocking member according to the extension path of the crack;

[0013] The second guiding member is movably arranged on the second blocking member and is used to guide the first blocking member according to the extension path of the crack.

[0014] As a further solution of the present invention, the first blocking member includes a first guide rod horizontally fixed to one side of the base and a first slide slidably mounted on the first guide rod, a first expansion sheet is provided at the bottom of the first slide, and first springs are mounted on both ends of the first guide rod to abut against the first slide;

[0015] The second blocking member includes a second guide rod horizontally fixed to the other side of the base and a second slide slidably mounted on the second guide rod. A second expansion piece is provided at the bottom of the second slide. Both ends of the second guide rod are mounted with second springs that abut against the second slide.

[0016] As a further solution of the present invention: a first turntable is fixedly mounted on the upper end of the first expansion piece, and the first turntable is rotatably mounted in the first slide;

[0017] A second turntable is fixedly sleeved on the upper end of the second expansion piece, and the second turntable is rotatably installed in the second slide.

[0018] As a further solution of the present invention: an air pump is installed on the base, and an air pipe communicating with the first expansion piece and the second expansion piece is provided at the output end of the air pump.

[0019] As a further solution of the present invention: the first expansion piece includes a first support piece and a first expansion capsule piece sleeved outside the first support piece, and a first air cavity is formed between the first support piece and the first expansion capsule piece;

[0020] The second expansion piece includes a second support piece and a second expansion capsule piece sleeved outside the second support piece, and a second air cavity is formed between the second support piece and the second expansion capsule piece.

[0021] As a further solution of the present invention: the grouting part includes a flexible grouting sleeve, both ends of which are sealedly connected to the first slide and the second slide respectively, the bottom of the flexible grouting sleeve is provided with an opening, and the top of the flexible grouting sleeve is connected to a grouting pipe.

[0022] As a further embodiment of the present invention, the first guide member includes a first sliding sleeve fixed to the first sliding platform and a first sliding rod vertically slidingly sleeved in the first sliding sleeve, a first guide plate being provided at the lower end of the first sliding rod, and a third spring being sleeved on the first sliding rod and abutting against the first guide plate;

[0023] The second guide member includes a second sliding sleeve fixed on the second sliding platform and a second sliding rod vertically slidingly sleeved in the second sliding sleeve, a second guide plate is provided at the lower end of the second sliding rod, and a fourth spring is sleeved on the second sliding rod and abuts against the second guide plate.

[0024] As a further solution of the present invention: the first guide plate includes a first plate body fixed to the lower end of the first slide rod, and a first guide column is provided at the bottom of the first plate body;

[0025] The second guide plate includes a second plate body fixed to the lower end of the second slide bar, and a second guide column is provided at the bottom of the second plate body.

[0026] As a further solution of the present invention: a V-shaped slotted piece is provided at the front end of the first plate body, and paving boards are symmetrically provided on both sides of the first plate body.

[0027] As a further solution of the present invention: a pressure roller is rotatably mounted on the rear end of the second plate body, and soil covering plates are symmetrically arranged on both sides of the second plate body.

[0028] Beneficial effects of the present invention:

[0029] The first and second plugging members are used to plug both ends of the crack to be reinforced, dividing the crack into sections so that each section is relatively isolated from other areas. This prevents slurry from overflowing into the through-hole areas on both sides during the grouting process, ensuring that the grouting material can be accurately filled into the target crack section, improving the grouting effect and reinforcement quality. This is particularly suitable for situations where cracks extend long and there is a risk of through-holes, effectively solving the problem of slurry overflow and grouting failure caused by excessively long cracks in traditional grouting methods.

[0030] The first guide member and the second guide member can adaptively offset relative to the base in a direction perpendicular to the feeding route of the walking platform according to the changes in the crack extension path. This adaptive guiding function ensures that the first sealing member and the second sealing member are always accurately inserted into the crack. At the same time, the grouting member can accurately cover the top of the current crack section opening, thereby improving the accuracy of crack grouting reinforcement. Even if the crack extension path is curved or irregular, the device can still effectively adapt, ensuring the accuracy and reliability of the grouting operation and reducing the risk of reinforcement failure due to inaccurate positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below with reference to the accompanying drawings.

[0032] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0033] Figure 2 A three-dimensional schematic diagram of another viewing angle of the present invention;

[0034] Figure 3 is a three-dimensional schematic diagram of the reinforcement unit in the present invention;

[0035] Figure 4 Schematic diagram of the local structure of the reinforcement unit in the present invention;

[0036] Figure 5 A schematic diagram of the partial structure of the reinforcement unit in another perspective of the present invention;

[0037] Figure 6 A bottom view of the reinforcement unit of the present invention;

[0038] Figure 7 Schematic diagram of the structure of the first blocking member and the first guiding member in the present invention;

[0039] Figure 8 This is a schematic structural diagram of the second blocking member and the second guiding member in the present invention;

[0040] Figure 9 is a cross-sectional view of the first expansion sheet in the present invention;

[0041] Figure 10 is a cross-sectional view of the second expansion sheet in the present invention;

[0042] Figure 11 Schematic diagram of the structure of the first guide member in the present invention;

[0043] Figure 12 Schematic diagram of the structure of the second guide member in the present invention.

[0044] In the picture:

[0045] 100, walking platform; 110, turning frame; 120, turning cylinder; 130, lifting frame; 140, lifting cylinder;

[0046] 200, reinforcement unit;

[0047] 210, base; 211, air pump; 212, trachea;

[0048] 220, first blocking member; 221, first guide rod; 222, first slide; 223, first turntable; 224, first expansion piece; 2241, first support piece; 2242, first expansion capsule; 2243, first air cavity; 225, first spring;

[0049] 230, second blocking member; 231, second guide rod; 232, second slide; 233, second turntable; 234, second expansion piece; 2341, second support piece; 2342, second expansion capsule; 2343, second air cavity; 235, second spring;

[0050] 240, grouting parts; 241, flexible grouting sleeve; 242, grouting pipe;

[0051] 250, first guide member; 251, first sliding sleeve; 252, first sliding rod; 253, first guide plate; 2531, first plate body; 2532, V-shaped slotted sheet; 2533, first guide post; 2534, paving board; 254, third spring;

[0052] 260, second guide member; 261, second sliding sleeve; 262, second sliding rod; 263, second guide plate; 2631, first plate body; 2632, pressure roller; 2633, second guide column; 2634, covering plate; 264, fourth spring. DETAILED DESCRIPTION

[0053] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed solely to enable those skilled in the art to better understand and implement the subject matter described herein, and that the functions and arrangements of the elements discussed may be varied without departing from the scope of this specification. Various examples may omit, substitute, or add various processes or components as needed. In addition, features described with respect to some examples may also be combined in other examples.

[0054] See also Figure 1 、 Figure 2 and Figure 3 The present invention discloses an intelligent reinforcement device for expansive soil foundation, comprising a walking platform 100 and a reinforcement unit 200 movably arranged at the forward end of the walking platform 100, wherein the reinforcement unit 200 comprises a base 210, a first blocking member 220, a second blocking member 230, a grouting member 240, a first guide member 250 and a second guide member 260, wherein the first blocking member 220 can be laterally arranged on one side of the base 210 for blocking one side of the crack to be reinforced; the second blocking member 230 can be laterally arranged on the other side of the base 210 for blocking to seal the other side of the crack to be reinforced; the grouting member 240 is arranged between the first sealing member 220 and the second sealing member 230, and is used to grout and reinforce the crack between the first sealing member 220 and the second sealing member 230; the first guiding member 250 can be raised and lowered on the first sealing member 220, and is used to guide the first sealing member 220 according to the crack extension path; the second guiding member 260 can be raised and lowered on the second sealing member 230, and is used to guide the first sealing member 220 according to the crack extension path.

[0055] Specifically, see Figure 4 、 Figure 5 and Figure 6When performing crack grouting reinforcement on an expansive soil foundation, the walking platform 100 is moved to the crack so that the forward direction of the walking platform 100 is roughly the same as the overall extension direction of the crack, and then the entire reinforcement unit 200 is adjusted to above the crack opening;

[0056] When a certain section of the crack needs to be grout-reinforced, the first guide member 250 is first inserted into the front end of the current crack section so that the first blocking member 220 is located directly above the front end of the current crack section, and then the second guide member 260 is inserted into the rear end of the current crack section so that the second blocking member 230 is located directly above the rear end of the current crack section; then the base 210 is driven vertically downward so that the first blocking member 220 and the second blocking member 230 are respectively inserted into the front end and the rear end of the current crack section until the grouting member 240 covers the top of the opening of the current crack section; the first blocking member 220 and the second blocking member 230 are opened to respectively block the front end and the rear end of the current crack section so that the current crack section is relatively isolated from other areas of the crack, and then the grouting member 240 is opened to fill the interior of the current crack section with slurry for reinforcement;

[0057] When the grouting of the crack section is completed, the base 210 is driven upward to reset, so that the first blocking member 220 and the second blocking member 230 are pulled out of the crack, and the grouting member 240 is also separated from the crack opening, while the first guide member 250 and the second guide member 260 are always located in the crack opening; then the walking platform 100 moves forward a distance along the extension direction of the crack, so that the first blocking member 220 and the second blocking member 230 are just offset from the crack section where the previous grouting is completed, and then the base 210 continues to descend, and the first blocking member 220 and the second blocking member 230 are used to block both sides of the crack section, and then the grouting member 240 is used to grout and reinforce the crack section. After the second section is grouted and reinforced and the blocking member is pulled out, the slurry injected in the first and second sections close to the second blocking member 230 will use its own fluidity to fill the position where the second blocking member 230 was located during the second section grouting; this reciprocating process can achieve continuous segmented grouting reinforcement of cracks in the expansive soil foundation.

[0058] It is worth noting that during the feeding process of the walking platform 100, even if there is a deviation between the feeding route of the walking platform 100 and the crack extension path, since the first guide member 250 and the second guide member 260 are always located in the crack opening, the first guide member 250 and the second guide member 260 can adaptively offset relative to the base 210 in a direction perpendicular to the feeding route of the walking platform 100 according to the changes in the crack extension path, so that the first guide member 250 and the second guide member 260 always move synchronously along the crack extension path, and then the first blocking member 220 and the second blocking member 230 can be guided in the path, so that the first blocking member 220 and the second blocking member 230 are always located directly above the crack opening, so as to ensure that when grouting each crack section, the first blocking member 220 and the second blocking member 230 can be accurately inserted into the crack, and at the same time ensure that the grouting member 240 can accurately cover the current crack section opening, so as to improve the accuracy and reinforcement effect of the crack grouting reinforcement.

[0059] The core of the present invention is that the first and second sealing members 220 and 230 are used to seal both ends of the crack to be reinforced, and the crack is continuously segmented so that each crack segment is relatively isolated from other areas. This prevents the slurry from overflowing into the through-hole areas on both sides during the grouting process, ensures that the grouting material can be accurately filled into the target crack segment, and improves the grouting effect and reinforcement quality. This invention is particularly suitable for situations where the crack is long and there is a risk of through-hole, and effectively solves the problem of slurry overflow and grouting failure caused by excessively long cracks in traditional grouting methods.

[0060] The first guide member 250 and the second guide member 260 can adaptively offset relative to the base 210 in a direction perpendicular to the feed route of the walking platform 100 according to changes in the crack extension path. This adaptive guiding function ensures that the first sealing member 220 and the second sealing member 230 are always accurately inserted into the crack. At the same time, the grouting member 240 can accurately cover the top of the current crack section opening, thereby improving the accuracy of crack grouting reinforcement. Even if the crack extension path is curved or irregular, the device can still effectively adapt, ensuring the accuracy and reliability of the grouting operation and reducing the risk of reinforcement failure due to inaccurate positioning.

[0061] In one embodiment, see Figure 1 and Figure 2 A turning frame 110 is rotatably mounted on the walking platform 100, and a turning cylinder 120 for driving the turning frame 110 is provided on the walking platform 100; a telescopically adjustable lifting frame 130 is slidably mounted in the turning frame 110, and a lifting cylinder 140 for driving the lifting frame 130 is further provided in the turning frame 110;

[0062] Specifically, in the initial state, the turning frame 110 is in a horizontal position on the walking platform 100, and the lifting frame 130 is retracted and folded inside the turning frame 110, thereby effectively lowering the center of gravity of the entire device and improving the stability of the entire device during movement;

[0063] When the walking platform 100 moves to the position where the crack is to be reinforced by grouting, the turning frame 110 is driven to turn upward by the turning cylinder 120 until the turning frame 110 turns to a vertical state. At this time, the reinforcement unit 200 as a whole is also in a vertical suspended state; after the first guide member 250 and the second guide member 260 are inserted into the crack opening, the base 210 can be driven to move vertically by the lifting frame 130, thereby driving the first blocking member 220, the second blocking member 230 and the grouting member 240 to rise and fall synchronously, so as to realize the segmented grouting reinforcement treatment of the crack.

[0064] It should be noted that, in the initial state, the turning frame 110 is placed horizontally, and the lifting frame 130 is retracted and folded inside the turning frame 110, which effectively lowers the center of gravity of the entire device, improves the stability of the device during movement, and reduces the risk of overturning due to an excessively high center of gravity. This is suitable for scenarios where the device is moved on complex terrain or uneven ground, ensuring that the device remains stable during movement and avoiding equipment damage or construction delays caused by shaking or overturning.

[0065] By driving the flip frame 110 to flip upward to a vertical state through the flip cylinder 120, the device can be quickly switched from a mobile mode to an operating mode. This spatial conversion function enables the reinforcement unit 200 to be quickly adjusted from a horizontal state to a vertical suspended state, providing a suitable operating posture for subsequent grouting reinforcement operations. In scenarios where rapid switching of operating states is required, such as at crack reinforcement sites, the device can quickly enter an operating state from a mobile state, reducing equipment adjustment time and improving construction efficiency.

[0066] In yet another embodiment, see Figure 7 The first blocking member 220 includes a first guide rod 221 horizontally fixed to one side of the base 210 and a first slide 222 slidably mounted on the first guide rod 221. A first expansion piece 224 is provided at the bottom of the first slide 222. Both ends of the first guide rod 221 are sleeved with first springs 225 that abut against the first slide 222.

[0067] Specifically, the first slide 222 can slide horizontally along the first guide rod 221, so that the first slide 222 can slide relatively along the first guide rod 221 when the first guide member 250 deviates along the crack path. The first expansion piece 224 is guided by the first guide member 250 to ensure that the first expansion piece 224 is always located directly above the current crack opening, making it easier for the subsequent first expansion piece 224 to be smoothly inserted downward into the crack to achieve unilateral blocking. The first springs 225 at both ends of the first guide rod 221 can apply elastic force to the first slide 222, so that the first slide 222 can be in close contact with the inside of the crack after being inserted into the crack, thereby improving the stability of the unilateral blocking.

[0068] Likewise, see Figure 8 The second blocking member 230 includes a second guide rod 231 horizontally fixed to the other side of the base 210 and a second slide 232 slidably mounted on the second guide rod 231. A second expansion piece 234 is provided at the bottom of the second slide 232. Both ends of the second guide rod 231 are sleeved with second springs 235 that abut against the second slide 232.

[0069] Specifically, the second slide 232 can slide horizontally along the second guide rod 231, so that the second slide 232 can synchronously slide relative to the second guide rod 231 when the second guide member 260 deviates along the crack path, and the second expansion piece 234 is guided by the second guide member 260 to ensure that the second expansion piece 234 is always located directly above the current crack opening, so as to facilitate the subsequent second expansion piece 234 to be smoothly inserted downward into the crack to achieve unilateral blocking; the second springs 235 at both ends of the second guide rod 231 can apply elastic force to the second slide 232, so that the second slide 232 can be in close contact with the inside of the crack after being inserted into the crack, thereby improving the stability of the unilateral blocking, wherein the surface of the expansion piece is provided with an anti-sticking layer, which is conducive to separation from the slurry.

[0070] It should be noted that the first blocking member 220 and the second blocking member 230 slide horizontally along the guide rods (the first guide rod 221 and the second guide rod 231) via the slides (the first slide 222 and the second slide 232), and can be adaptively adjusted according to changes in the crack path; the guide members (the first guide member 250 and the second guide member 260) guide the expansion pieces (the first expansion piece 224 and the second expansion piece 234) along the path, ensuring that the expansion pieces are always located directly above the crack opening, facilitating smooth insertion into the crack to achieve unilateral blocking. This is suitable for situations where the crack path is irregular or curved, and can effectively solve the problem of blocking difficulties caused by changes in the crack path in traditional blocking methods.

[0071] The springs at both ends of the guide rod (the first spring 225 and the second spring 235) exert elastic force on the slide, so that the slide can be in close contact with the inside of the crack after being inserted into the crack, thereby improving the stability of the plugging. In the case of uneven crack width or slight deformation, the elastic effect of the spring can ensure that the plugging member fits tightly against the inner wall of the crack, preventing the slurry from overflowing from the plugging area, thereby improving the effect of grouting reinforcement.

[0072] The adaptive sliding function of the sealing piece combined with the path guidance of the guide piece enables the device to dynamically adjust the sealing position during continuous operation, ensuring that each section of the crack can be accurately sealed. In projects that require segmented grouting reinforcement of long cracks, this dynamic adjustment capability can ensure that the device always maintains efficient sealing and grouting effects during continuous movement, thereby improving the overall efficiency and quality of construction.

[0073] Further, see Figure 7 and Figure 8 Taking into account the different bending directions of different crack positions, in order to ensure that the first expansion piece 224 and the first spring 225 can be smoothly inserted into the crack opening, the upper end of the first expansion piece 224 is fixedly sleeved with a first turntable 223, and the first turntable 223 is rotatably mounted in the first slide 222; the upper end of the second expansion piece 234 is fixedly sleeved with a second turntable 233, and the second turntable 233 is rotatably mounted in the second slide 232;

[0074] Specifically, due to the setting of the first turntable 223 and the second turntable 233, the first expansion sheet 224 can rotate freely in the circumferential direction relative to the first slide 222, and the second expansion sheet 234 can rotate freely in the circumferential direction relative to the second slide 232; in this way, no matter what the bending direction of the crack opening below the first expansion sheet 224 and the second expansion sheet 234 is, during the process of the first expansion sheet 224 and the second expansion sheet 234 descending and contacting the crack opening, the first expansion sheet 224 and the second expansion sheet 234 can passively and adaptively deflect toward the bending direction of the crack until the deflection direction of the first expansion sheet 224 and the second expansion sheet 234 is consistent with the corresponding crack bending direction, so that the first expansion sheet 224 and the second expansion sheet 234 can be smoothly inserted into the corresponding crack opening.

[0075] It is worth noting that the arrangement of the first turntable 223 and the second turntable 233 enables the first expansion sheet 224 and the second expansion sheet 234 to freely rotate circumferentially relative to the slides (the first slide 222 and the second slide 232). Regardless of the curvature of the crack opening, the expansion sheet can passively and adaptively deflect in the direction of the crack curvature during the downward contact process until the deflection direction aligns with the crack curvature. This is suitable for reinforcement of expansive soil foundations with complex crack paths and variable curvature directions. It can ensure that the expansion sheet is smoothly inserted into the crack opening, avoiding insertion difficulties caused by irregular crack shapes.

[0076] The adaptive rotation of the turntable allows the expansion sheet to better conform to the shape of the crack, thereby improving the reliability and stability of the plugging. In the case of uneven crack width or slight deformation, the adaptive deflection of the expansion sheet can ensure that it fits tightly against the inner wall of the crack, preventing the slurry from overflowing from the plugging area.

[0077] The design of the turntable enables the expansion piece to dynamically adjust its direction during insertion into the crack to adapt to real-time changes in the crack. This dynamic adjustment capability ensures that the device always maintains an efficient sealing effect during continuous operation. In projects that require segmented grouting reinforcement of long cracks, this dynamic adjustment capability can ensure that each section of the crack can be accurately sealed during the continuous movement of the device.

[0078] For further information, see Figure 5 An air pump 211 is installed on the base 210, and an air pipe 212 communicating with the first expansion piece 224 and the second expansion piece 234 is provided at the output end of the air pump 211;

[0079] When sealing both ends of a certain crack segment, the air pump 211 is turned on and air is blown into the first expansion piece 224 and the second expansion piece 234 through the air pipe 212, so that the first expansion piece 224 and the second expansion piece 234 expand and fit tightly against the inner wall of the crack. The first expansion piece 224 and the second expansion piece 234 can be used to seal the gap at both ends of the current crack segment, thereby preventing the slurry in the crack segment from overflowing from both ends during the subsequent grouting process.

[0080] After the grouting is completed, the air pump 211 evacuates the first expansion sheet 224 and the second expansion sheet 234 to restore the first expansion sheet 224 and the second expansion sheet 234 to their initial states, so that the first expansion sheet 224 and the second expansion sheet 234 can be smoothly pulled out of the crack.

[0081] Also, see Figure 9 The first expansion piece 224 includes a first support piece 2241 and a first expansion capsule 2242 sleeved outside the first support piece 2241 , and a first air cavity 2243 is formed between the first support piece 2241 and the first expansion capsule 2242 ;

[0082] Specifically, the first support sheet 2241 serves as an internal support member of the entire first expansion sheet 224, ensuring the overall rigidity of the first expansion sheet 224, thereby ensuring that the first expansion sheet 224 can be smoothly inserted into the crack in an uninflated state. When the first expansion sheet 224 is inflated, gas enters the first air cavity 2243, causing the first expansion capsule 2242 to expand outward, thereby sealing the crack.

[0083] Likewise, see Figure 10 The second expansion piece 234 includes a second support piece 2341 and a second expansion capsule 2342 sleeved outside the second support piece 2341 , and a second air cavity 2343 is formed between the second support piece 2341 and the second expansion capsule 2342 ;

[0084] Specifically, the second support sheet 2341 serves as the internal support component of the entire second expansion sheet 234, which can ensure the overall rigidity of the second expansion sheet 234, so as to ensure that the second expansion sheet 234 can be smoothly inserted into the crack in the uninflated state; when the second expansion sheet 234 is inflated, the gas enters the second air cavity 2343, thereby causing the second expansion bag sheet 2342 to expand outward to achieve the sealing of the crack. The volume after expansion accounts for a very small proportion in the size of each grouting atmosphere and can be ignored. In the space left after each withdrawal, the mortar can automatically overflow into the space and cover the gap.

[0085] It should be noted that the air pump 211 is used to blow air into the first expansion sheet 224 and the second expansion sheet 234, causing the expansion sheets to expand and fit tightly against the inner wall of the crack, thereby achieving sealing at both ends of the crack. This dynamic sealing method can effectively prevent slurry from overflowing from both ends of the crack, ensuring the efficiency and sealing of the grouting process.

[0086] After grouting is completed, the air pump 211 evacuates the expansion piece to restore it to its original state so that it can be smoothly withdrawn from the crack. This recoverable design not only improves the reusability of the expansion piece, but also reduces equipment loss and replacement costs.

[0087] The first expansion sheet 224 and the second expansion sheet 234 are respectively composed of a support sheet (the first support sheet 2241 and the second support sheet 2341) and an expansion bag sheet (the first expansion bag sheet 2242 and the second expansion bag sheet 2342), and an air cavity (the first air cavity 2243 and the second air cavity 2343) is formed inside. The support sheet serves as an internal supporting component to ensure the rigidity of the expansion sheet in the uninflated state, so that it can be smoothly inserted into the crack. When the crack has a complex shape and uneven width, this structural design can ensure the stability and reliability of the expansion sheet when inserted into the crack.

[0088] In further embodiments, see Figure 5 and Figure 6 The grouting member 240 includes a flexible grouting sleeve 241, both ends of which are sealedly connected to the first slide 222 and the second slide 232 respectively. The bottom of the flexible grouting sleeve 241 is provided with an opening, and the top of the flexible grouting sleeve 241 is connected to a grouting pipe 242;

[0089] Specifically, the flexible grouting sleeve 241 has a certain flexibility in the horizontal plane, so that when the first slide 222 and the second slide 232 are offset, the flexible grouting sleeve 241 can be adaptively bent and deformed in the horizontal plane, so that the extension direction of the entire flexible grouting sleeve 241 is consistent with the current crack section opening, so that the subsequent flexible grouting sleeve 241 can just accurately cover the opening of the current crack section;

[0090] It is worth noting that the flexible grouting sleeve 241 can be arbitrarily bent and deformed in the horizontal plane, and it has a certain rigidity in the vertical direction, thereby ensuring that it can stably cover the opening of the crack section without defects such as collapse and rupture, ensuring that the slurry can be stably injected into the crack during grouting; in order to meet the above functions of the flexible grouting sleeve 241, in actual application, the flexible grouting sleeve 241 can be integrally formed with a silicone material, and a number of rigid support columns are embedded in the inner walls on both sides of the flexible grouting sleeve 241. The rigid support columns can be made of steel wire, and the rigid support columns extend in the vertical direction. In this way, the rigid support columns will not affect the bending deformation of the entire flexible grouting sleeve 241 in the horizontal plane, but can provide vertical support to the flexible grouting sleeve 241, thereby preventing the flexible grouting sleeve 241 from collapsing.

[0091] Further, see Figure 7 The first guide member 250 includes a first sliding sleeve 251 fixed on the first sliding platform 222 and a first sliding rod 252 vertically slidingly sleeved in the first sliding sleeve 251. A first guide plate 253 is provided at the lower end of the first sliding rod 252. A third spring 254 is sleeved on the first sliding rod 252 and abuts against the first guide plate 253.

[0092] The first slide bar 252 can be raised and lowered relative to the first slide table 222 and the first slide sleeve 251 in the vertical direction. At the same time, the third spring 254 always applies a vertical downward thrust to the first guide plate 253. In this way, no matter what height the base 210 is at, the first guide plate 253 can always be in close contact with the crack opening during the feeding process of the walking platform 100, thereby preventing the first guide plate 253 from being separated from the crack and causing a failure in guidance.

[0093] Likewise, see Figure 8The second guide member 260 includes a second sliding sleeve 261 fixed on the second sliding platform 232 and a second sliding rod 262 vertically slidingly sleeved in the second sliding sleeve 261. A second guide plate 263 is provided at the lower end of the second sliding rod 262. A fourth spring 264 is sleeved on the second sliding rod 262 and abuts against the second guide plate 263.

[0094] The second slide bar 262 can rise and fall and slide in the vertical direction relative to the second slide table 232 and the second slide sleeve 261, and at the same time the fourth spring 264 always applies a vertical downward thrust to the second guide plate 263. In this way, no matter what height the base 210 is at, during the feeding process of the walking platform 100, it can ensure that the second guide plate 263 is always in close contact with the crack opening to prevent the second guide plate 263 from detaching from the crack and causing guidance failure.

[0095] For further information, see Figure 11 and Figure 12 The first guide plate 253 includes a first plate 2531 fixed to the lower end of the first slide bar 252, and a first guide post 2533 is provided at the bottom of the first plate 2531; the second guide plate 263 includes a second plate 2631 fixed to the lower end of the second slide bar 262, and a second guide post 2633 is provided at the bottom of the second plate 2631;

[0096] Specifically, the first guide column 2533 and the second guide column 2633 are always embedded inside the crack opening, and the position space of the guide column in the crack can be ignored. Therefore, during the feeding process of the walking platform 100 and the base 210, the first guide column 2533 and the second guide column 2633 can be adaptively adjusted according to the opposite direction of the crack extension, thereby guiding the first blocking member 220 and the second blocking member 230.

[0097] It should be noted that the first guide member 250 and the second guide member 260 ensure that the guide plates (the first guide plate 253 and the second guide plate 263) are always in close contact with the crack opening through the lifting and sliding of the sliding rods (the first sliding rod 252 and the second sliding rod 262) in the vertical direction, combined with the thrust of the springs (the third spring 254 and the fourth spring 264). This design can effectively prevent the guide plates from being separated from the crack, thereby avoiding guidance failure. It is suitable for scenarios where cracks have complex shapes and varying depths, ensuring that the guide members can still effectively guide the plugging member into the crack at different heights.

[0098] The guide columns (first guide column 2533 and second guide column 2633) at the bottom of the guide plate are embedded in the crack opening and can be adaptively adjusted according to the direction of crack extension. This adaptive function enables the guide to accurately guide the sealing component to move along the crack path. When the crack path is curved or irregular, it can ensure that the sealing component is smoothly inserted into the crack, thereby improving the grouting effect.

[0099] Also, see Figure 11 A V-shaped slotted piece 2532 is provided at the front end of the first plate body 2531, and paving boards 2534 are symmetrically provided on both sides of the first plate body 2531;

[0100] During the feeding process, the V-shaped slotted piece 2532 can slot the crack opening at the front end to chisel the crack opening into a uniform notch with a V-shaped cross-section, so that the subsequent first sealing piece 220 and the second sealing piece 230 can be smoothly inserted into the crack. At the same time, the spreading plates 2534 on both sides can spread the soil blocks cut and stripped by the V-shaped slotted piece 2532 to both sides of the crack opening, thereby avoiding the stripped soil blocks from accumulating at the crack opening and affecting the subsequent segmented grouting reinforcement treatment.

[0101] See also Figure 12 A pressure roller 2632 is rotatably mounted on the rear end of the second plate 2631, and covering plates 2634 are symmetrically arranged on both sides of the second plate 2631;

[0102] After the grouting and filling of the second sealing member position are completed, as the walking platform 100 is fed, the pressure roller 2632 can roll the slurry at the crack opening, thereby improving the filling density of the segmented grouting. At the same time, the covering plate 2634 can gather the soil blocks spread on both sides to the middle again and cover the crack opening to bury the slurry.

[0103] It is worth noting that the V-shaped slotted piece 2532 of the first guide plate 253 can slot the crack opening to form a uniform V-shaped cross-section, which is convenient for the insertion of the plugging piece; at the same time, the spreading plate 2534 spreads the cut soil blocks to both sides to avoid soil block accumulation affecting grouting; the pressure roller 2632 of the second guide plate 263 rolls the slurry at the crack opening after grouting is completed to improve the grouting density, and the covering plate 2634 gathers the soil blocks on both sides to cover the crack opening and bury the slurry; during the grouting reinforcement process, these designs can improve the grouting effect, reduce slurry waste, and protect the crack surface after grouting.

[0104] The above describes the specific embodiments of the present invention, but the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the guidance of the present invention, those skilled in the art can also make many forms, all of which are protected by the present invention.

Claims

1. An intelligent reinforcement device for an expansive soil foundation, comprising a walking platform (100) and a reinforcement unit (200) movably arranged at the forward end of the walking platform (100), characterized in that: The reinforcement unit (200) comprises: abutment(210); A first blocking member (220) is laterally movably disposed on one side of the base (210) and is used to block one side of the crack to be reinforced; A second blocking member (230) is laterally movably disposed on the other side of the base (210) and is used to block the other side of the crack to be reinforced; A grouting member (240) is provided between the first blocking member (220) and the second blocking member (230) and is used for grouting and reinforcing the crack between the first blocking member (220) and the second blocking member (230); a first guiding member (250) which is movably disposed on the first blocking member (220) and is used to guide the first blocking member (220) according to a crack extension path; The second guiding member (260) is movably disposed on the second blocking member (230) and is used to guide the first blocking member (220) according to the crack extension path.

2. The intelligent reinforcement device for expansive soil foundation according to claim 1, characterized in that: The first blocking member (220) includes a first guide rod (221) fixed horizontally to one side of the base (210) and a first slide (222) slidably sleeved on the first guide rod (221); a first expansion piece (224) is provided at the bottom of the first slide (222); and first springs (225) are sleeved at both ends of the first guide rod (221) and abut against the first slide (222); The second blocking member (230) includes a second guide rod (231) fixed horizontally on the other side of the base (210) and a second slide (232) slidably mounted on the second guide rod (231). A second expansion piece (234) is provided at the bottom of the second slide (232). Both ends of the second guide rod (231) are mounted with second springs (235) that abut against the second slide (232).

3. The intelligent reinforcement device for expansive soil foundation according to claim 2, characterized in that: A first rotating platform (223) is fixedly sleeved on the upper end of the first expansion piece (224), and the first rotating platform (223) is rotatably mounted in the first sliding platform (222); The upper end of the second expansion piece (234) is fixedly sleeved with a second turntable (233), and the second turntable (233) is rotatably mounted in the second slide (232).

4. The intelligent reinforcement device for expansive soil foundation according to claim 2, characterized in that: An air pump (211) is installed on the base (210), and an air pipe (212) communicating with the first expansion piece (224) and the second expansion piece (234) is provided at the output end of the air pump (211).

5. The intelligent reinforcement device for expansive soil foundation according to claim 4, characterized in that: The first expansion piece (224) includes a first support piece (2241) and a first expansion capsule (2242) sleeved outside the first support piece (2241), and a first air cavity (2243) is formed between the first support piece (2241) and the first expansion capsule (2242); The second expansion piece (234) includes a second support piece (2341) and a second expansion capsule piece (2342) sleeved on the outside of the second support piece (2341), and a second air cavity (2343) is formed between the second support piece (2341) and the second expansion capsule piece (2342).

6. The intelligent reinforcement device for expansive soil foundation according to claim 2, characterized in that: The grouting member (240) comprises a flexible grouting sleeve (241), the two ends of which are sealedly connected to the first slide (222) and the second slide (232), respectively; an opening is provided at the bottom of the flexible grouting sleeve (241), and a grouting pipe (242) is connected to the top of the flexible grouting sleeve (241).

7. The intelligent reinforcement device for expansive soil foundation according to claim 2, characterized in that: The first guide member (250) includes a first sliding sleeve (251) fixed on the first sliding platform (222) and a first sliding rod (252) vertically slidingly sleeved in the first sliding sleeve (251); a first guide plate (253) is provided at the lower end of the first sliding rod (252); and a third spring (254) is sleeved on the first sliding rod (252) and abuts against the first guide plate (253); The second guide member (260) includes a second sliding sleeve (261) fixed on the second slide table (232) and a second sliding rod (262) vertically slidingly sleeved in the second sliding sleeve (261); a second guide plate (263) is provided at the lower end of the second sliding rod (262); and a fourth spring (264) is sleeved on the second sliding rod (262) and abuts against the second guide plate (263).

8. The intelligent reinforcement device for expansive soil foundation according to claim 7, characterized in that: The first guide plate (253) comprises a first plate body (2531) fixed to the lower end of the first slide bar (252), and a first guide column (2533) is provided at the bottom of the first plate body (2531); The second guide plate (263) includes a second plate body (2631) fixed to the lower end of the second slide bar (262), and a second guide column (2633) is provided at the bottom of the second plate body (2631).

9. The intelligent reinforcement device for expansive soil foundation according to claim 8, characterized in that: A V-shaped slotted piece (2532) is provided at the front end of the first plate body (2531), and paving boards (2534) are symmetrically provided on both sides of the first plate body (2531).

10. The intelligent reinforcement device for expansive soil foundation according to claim 8, characterized in that: A pressure roller (2632) is rotatably mounted on the rear end of the second plate body (2631), and soil covering plates (2634) are symmetrically arranged on both sides of the second plate body (2631).

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