Foundation pit wall surface concrete spraying reinforcing device

Abstract

The invention discloses a foundation pit wall surface concrete spraying reinforcing device, and relates to the technical field of foundation pit construction equipment, the foundation pit wall surface concrete spraying reinforcing device comprises an inverted L-shaped support frame, a concrete spraying assembly, a suspension assembly, a spraying head, a coating frame, a first spiral frame, a second spiral frame and a roller frame. The first spiral frame conducts first-time spiral dispersing and trowelling treatment on concrete on the inner wall of the foundation pit, and the second spiral frame conducts second-time spiral dispersing and trowelling treatment on the concrete on the inner wall of the foundation pit, so that the concrete makes contact with the uneven surface of the inner wall of the foundation pit at a spiral angle for filling; the concrete is more uniformly distributed on the surface of the inner wall of the foundation pit, the hollow problem of the wall surface of the foundation pit can be effectively reduced, and the wall surface stability is enhanced; the roller frame conducts leveling and rolling treatment on the concrete on the inner wall of the foundation pit after double spiral dispersing and leveling treatment, and the parallelism of the concrete reinforcing wall face of the foundation pit can be effectively guaranteed.

Description

Technical Field

[0001] This invention relates to the field of foundation pit construction equipment technology, specifically to a foundation pit wall concrete spraying reinforcement device. Background Technology

[0002] An excavation pit is a pit dug at the foundation design location according to the base elevation and foundation plane dimensions. For deeper excavations or those near buildings, excavation pit wall support methods, shotcrete wall protection methods, and even large excavation pits may use methods such as diaphragm walls and interlocking column-type bored piles to prevent the outer soil layer from collapsing. In subway construction projects, the excavation pit is also one of the foundation works. When reinforcing the walls of the excavation pit, shotcrete is often used.

[0003] Existing concrete spraying reinforcement devices for foundation pit walls do not achieve good uniformity in the treatment of the concrete. Because the foundation pit wall is not flat and has uneven grooves on the surface, the concrete in the foundation pit wall is prone to hollowness, resulting in poor reinforcement effect.

[0004] For example, the aforementioned problem exists in patent (CN114215067B); it describes "including a support frame plate, an inner edge support frame installed on the support frame plate, and a support base set at the bottom of the inner edge support frame; a suspension mechanism is provided on the support frame plate, and a spraying device is installed on the inner edge support frame via a guide rail; a spraying assembly is provided on the spraying device, and a coating assembly matching the spraying assembly; both the support frame plate and the inner edge support frame are provided with abutting components facing the foundation pit wall, and support corner assemblies are provided at the four corners of the spraying device, with the support corner assemblies supporting the foundation pit wall and the spraying device." In the aforementioned patent, only a single flat roller is used to flatten the concrete on the foundation pit wall, but the grooves on the upper surface of the foundation pit wall are not completely filled by only one flattening process. This leads to the problem of hollowness in the concrete on the foundation pit wall, resulting in poor reinforcement of the foundation pit wall concrete.

[0005] To address the aforementioned issue of poor uniformity in the treatment of foundation pit wall concrete, where the foundation pit wall is not flat and has uneven grooves, leading to hollowness in the concrete and resulting in poor reinforcement of the foundation pit wall concrete, we propose a rotary dry steam cleaning jet device. Summary of the Invention

[0006] The purpose of this invention is to provide a concrete spraying reinforcement device for foundation pit walls to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a concrete spraying reinforcement device for foundation pit walls, comprising an inverted L-shaped support frame, a concrete spraying assembly, and a suspension assembly. The concrete spraying assembly is slidably disposed on the outer wall of the vertical section of the inverted L-shaped support frame. The end of the suspension rope of the suspension assembly is fixedly connected to the top of the concrete spraying assembly. A plurality of spraying heads are provided on the outer wall of the concrete spraying assembly away from the inverted L-shaped support frame. A coating frame is provided on the outer wall of the concrete spraying assembly below the spraying heads. A first spiral frame, a second spiral frame, and a roller frame are movably connected on the outer wall of the coating frame. The first spiral frame, the second spiral frame, and the roller frame are arranged in parallel.

[0008] Furthermore, the second spiral frame is disposed between the first spiral frame and the roller frame, and the blade spiral angles of the first spiral frame and the second spiral frame are opposite.

[0009] Furthermore, each end of the first spiral frame is provided with a first swing arm that is rotatably connected. The first swing arm is rotatably connected to the coating frame. The outer wall of the first swing arm away from the first spiral frame is provided with a first cylinder. The end of the first cylinder away from the first swing arm is rotatably connected to the coating frame.

[0010] Furthermore, each end of the second spiral frame is provided with a second swing arm that is rotatably connected. The second swing arm is rotatably connected to the coating frame. A second cylinder is provided at the end of the outer wall of the second swing arm away from the second spiral frame. The end of the second cylinder away from the second swing arm is rotatably connected to the coating frame.

[0011] Furthermore, each end of the roller frame is provided with a third swing arm that is rotatably connected. The third swing arm is rotatably connected to the coating frame. A third cylinder is provided at the end of the outer wall of the third swing arm away from the roller frame. The end of the third cylinder away from the third swing arm is rotatably connected to the coating frame.

[0012] Furthermore, the bottom of the horizontal section of the inverted L-shaped support frame is provided with several first support feet on the side away from the vertical section, and the bottom of the vertical section of the inverted L-shaped support frame is provided with several second support feet.

[0013] Furthermore, the outer walls of the first and second support feet are each horizontally provided with a flat insertion limiting mechanism. The flat insertion limiting mechanism includes a support plate, a movable plate, and a base plate. The movable plate is movably disposed between the support plate and the base plate. Several insertion rods are vertically provided at the bottom of the movable plate, and several servo electric cylinders are vertically provided at the top of the movable plate. The top of the servo electric cylinders is fixedly connected to the bottom of the support plate, and the top of the base plate has through holes that match the insertion rods.

[0014] Furthermore, a rotatably connected support shaft is vertically provided at the center of the bottom of the chassis, and several third spiral frames are horizontally provided on the outer wall of the support shaft. The top of the support shaft passes through the chassis, the movable plate and the support plate and extends to the top of the support plate. A first rotary drive mechanism for the rotatably connected support shaft is provided at the top of the support plate.

[0015] Furthermore, the top center of the insertion rod is provided with a rotatably connected support rod, the center of the movable disk is provided with a rotatably connected first gear, the outer wall of the support rod extends into the interior of the movable disk and is provided with a second gear that meshes with the first gear, the bottom of the support rod is provided with a support cylinder inside the insertion rod, the outer wall of the support cylinder is provided with symmetrical vertical fan-shaped strips on both sides, the outer wall of the support cylinder is provided with an arc-shaped strip on one side of the fan-shaped strips, the interior of the insertion rod is provided with a plurality of elastic inserts horizontally between the arc-shaped strips and the fan-shaped strips, the outer wall of the insertion rod is provided with a through groove that matches the elastic inserts, and the top of the movable disk is provided with a second rotary drive mechanism of the first gear.

[0016] Furthermore, the elastic insert includes a strip, the outer wall of which is fitted with a spring, one end of which is fixedly connected to the strip and the other end of which is fixedly connected to the inner wall of the insert; the second rotary drive mechanism includes a third gear, a servo motor and a reducer, the third gear is rotatably disposed inside the movable disk, and the servo motor is connected to the third gear through the reducer.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. This invention, through the configuration of an inverted L-shaped support frame, a concrete spraying assembly, a suspension assembly, a spraying head, a coating rack, a first spiral frame, a second spiral frame, and a roller frame, provides support for the spraying reinforcement equipment on both the inside and outside of the foundation pit. The concrete spraying assembly is used to spray concrete, with the spraying head outputting the sprayed concrete. The suspension assembly allows for the suspension and lifting adjustment of the concrete spraying assembly, enabling it to sequentially reinforce the inner wall of the foundation pit from bottom to top. The first spiral frame performs a first spiral dispersion and smoothing treatment on the concrete on the inner wall of the foundation pit, ensuring... The concrete is filled by contacting the uneven surface of the pit wall with a spiral angle, making the concrete more evenly distributed on the pit wall surface. The second spiral frame performs a second spiral dispersion and smoothing treatment on the concrete of the pit wall, which can be done again on the basis of the first spiral frame, making the concrete more evenly distributed on the pit wall surface. This can effectively reduce the hollow problem of the pit wall and enhance the stability of the wall surface. The roller frame performs a flat rolling treatment on the concrete of the pit wall after the double spiral dispersion and smoothing treatment, which can effectively ensure the parallelism of the concrete reinforcement wall of the pit.

[0018] 2. In this invention, a flat insertion limiting mechanism, a support plate, a movable plate, a chassis, a third spiral frame, a servo electric cylinder, and an insertion rod are provided. The flat insertion limiting mechanism provides flat insertion limiting support to the ground outside the first and second support feet, effectively improving the stability of the first and second support feet, thereby enhancing the safety and stability of the inverted L-shaped support frame during operation. The third spiral frame can perform spiral scraping and cleaning of the uneven ground below the chassis, making the ground at the bottom of the chassis flat, effectively improving the equipment's adaptability to uneven ground. The servo electric cylinder supports the lifting and lowering movement of the movable plate, which can drive the insertion rod to lift and lower. The insertion rod can pass through the through hole at the top of the chassis and extend to the ground below the chassis to be inserted into the soil. The cooperation between the insertion rod and the elastic plug effectively improves the insertion limiting stability of the insertion rod, thereby enhancing the safety and stability of the first and second support feet, and thus improving the safety and stability of the inverted L-shaped support frame during operation. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is the present invention. Figure 1 Enlarged view of point A in the middle; Figure 3 This is a structural schematic diagram of the concrete spraying assembly of the present invention; Figure 4 This is a schematic diagram of the coating rack structure of the present invention; Figure 5 This is a schematic diagram of the structure of the support shaft of the present invention; Figure 6 This is a schematic diagram of the structure of the insertion rod of the present invention; Figure 7 This is a structural schematic diagram of the support rod, support cylinder, sector strip, and arc strip of the present invention; Figure 8 This is a schematic diagram of the structure of the elastic plug-in of the present invention; In the diagram: 1. Inverted L-shaped support frame; 2. Concrete spraying assembly; 201. Spraying head; 3. First rotary drive mechanism; 4. First support leg; 5. Second support leg; 6. Coating rack; 601. First spiral frame; 602. Second spiral frame; 603. Roller frame; 604. First swing arm; 605. First cylinder; 606. Second swing arm; 607. Second cylinder; 608. Third swing arm; 609. Third cylinder; 7. Flat insertion limiting mechanism; 701. Support plate; 7 702. Movable plate; 703. Chassis; 704. Insert rod; 705. Servo electric cylinder; 706. Support shaft; 707. Third screw frame; 708. Support rod; 709. First gear; 710. Second gear; 711. Support cylinder; 712. Sector bar; 713. Arc bar; 714. Elastic insert; 715. Through slot; 716. Second rotary drive mechanism; 717. Reducer; 718. Insert bar; 719. Spring; 720. Third gear; 721. Servo motor. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1 Please see Figure 1 and Figures 3-4This invention provides a technical solution: a concrete spraying reinforcement device for foundation pit walls, comprising an inverted L-shaped support frame 1, a concrete spraying assembly 2, and a suspension assembly. The concrete spraying assembly 2 is slidably mounted on the outer wall of the vertical section of the inverted L-shaped support frame 1. The end of the suspension rope of the suspension assembly is fixedly connected to the top of the concrete spraying assembly 2. A plurality of spraying heads 201 are provided on the outer wall of the concrete spraying assembly 2 away from the inverted L-shaped support frame 1. A coating frame 6 is provided on the outer wall of the concrete spraying assembly 2 below the spraying heads 201. A first spiral frame 601, a second spiral frame 602, and a roller frame 603 are movably connected on the outer wall of the coating frame 6. The first spiral frame 601, the second spiral frame 602, and the roller frame 603 are arranged in parallel. The second spiral frame 602 is located between the first spiral frame 601 and the roller frame 603. The blade spiral angles of the first spiral frame 601 and the second spiral frame 602 are opposite. Both ends of the first spiral frame 601 are respectively... A first swing arm 604 is rotatably connected to a coating rack 6. A first cylinder 605 is provided at the end of the outer wall of the first swing arm 604 away from the first spiral frame 601. The end of the first cylinder 605 away from the first swing arm 604 is rotatably connected to the coating rack 6. A second swing arm 606 is rotatably connected to both ends of a second spiral frame 602. The second swing arm 606 is rotatably connected to the coating rack 6. A second cylinder 607 is provided at the end of the outer wall of the second swing arm 606 away from the second spiral frame 602. The end of the second cylinder 607 away from the second swing arm 606 is rotatably connected to the coating rack 6. A third swing arm 608 is rotatably connected to both ends of a roller frame 603. The third swing arm 608 is rotatably connected to the coating rack 6. A third cylinder 609 is provided at the end of the outer wall of the third swing arm 608 away from the roller frame 603. The end of the third cylinder 609 away from the third swing arm 608 is rotatably connected to the coating rack 6.

[0022] In one embodiment, the bottom of the horizontal section of the inverted L-shaped support frame 1 is provided with a plurality of first support feet 4 on the side away from the vertical section, and the bottom of the vertical section of the inverted L-shaped support frame 1 is provided with a plurality of second support feet 5. The first support feet 4 provide support at the bottom of the horizontal section of the inverted L-shaped support frame 1 to ensure the support stability of the horizontal section of the inverted L-shaped support frame 1 at the outer edge of the foundation pit, and the second support feet 5 provide support at the bottom of the vertical section of the inverted L-shaped support frame 1 to ensure the support stability of the vertical section of the inverted L-shaped support frame 1 inside the foundation pit.

[0023] Working principle of the invention: Refer to the instruction manual appendix Figure 1 and Figures 3-4This invention comprises an inverted L-shaped support frame 1, a concrete spraying assembly 2, a suspension assembly, a spraying head 201, a coating rack 6, a first spiral frame 601, a second spiral frame 602, and a roller frame 603. The horizontal section at the top of the inverted L-shaped support frame 1 is located outside the foundation pit, and the vertical section at the bottom of the inverted L-shaped support frame 1 is located inside the foundation pit. The inverted L-shaped support frame 1 can support the spraying reinforcement equipment on both the inside and outside of the foundation pit. The concrete spraying assembly 2 is used to spray concrete, and the spraying head 201 sprays and outputs the concrete. The concrete spraying assembly 2 can use the existing concrete spraying system, which can realize automated spraying treatment of the foundation pit wall. The suspension assembly is used to suspend and adjust the concrete spraying assembly 2. The suspension assembly uses the existing suspension device, and the concrete spraying assembly 2 is adjusted by a suspension rope to ensure that the concrete spraying assembly 2 can move up and down along the inner wall of the foundation pit, so that the concrete spraying assembly 2 can spray concrete to reinforce the inner wall of the foundation pit from bottom to top. When the concrete spraying assembly 2 moves up and down, the coating frame 6 moves up and down along with it. The first spiral frame 601, the second spiral frame 602, and the roller frame 603 on the coating frame 6 all move up and down with the concrete spraying assembly 2. The concrete spraying assembly 2 is set to spray concrete onto the inner wall of the pit from bottom to top. When the first spiral frame 601, the second spiral frame 602, and the roller frame 603 move from bottom to top with the concrete spraying assembly 2, the first spiral frame 601 first rolls into contact with the concrete on the inner wall of the pit, then the second spiral frame 602 rolls into contact with the concrete on the inner wall of the pit, and finally the roller frame 603 rolls into contact with the concrete on the inner wall of the pit. The first spiral frame 601, the second spiral frame 602, and the roller frame 603 roll into contact with the concrete on the inner wall of the pit. 1. The concrete on the inner wall of the foundation pit undergoes a first spiral dispersion and smoothing treatment, allowing the concrete to contact and fill the uneven surface of the foundation pit at a spiral angle, resulting in a more uniform distribution of the concrete on the inner wall surface. 2. The second spiral frame 602 performs a second spiral dispersion and smoothing treatment on the concrete on the inner wall of the foundation pit, which can be done again on the basis of the first spiral frame 601, resulting in a more uniform distribution of the concrete on the inner wall surface of the foundation pit, effectively reducing the hollow problem of the foundation pit wall and enhancing the stability of the wall surface. 3. The roller frame 603 performs a flattening and rolling treatment on the concrete on the inner wall of the foundation pit after the double spiral dispersion and smoothing treatment, which can effectively ensure the parallelism of the concrete reinforced wall surface of the foundation pit. The second spiral frame 602 is designed to be positioned between the first spiral frame 601 and the roller frame 603. This allows for setting the smoothing sequence of the concrete by the first spiral frame 601, the second spiral frame 602, and the roller frame 603, ensuring that the roller frame 603 undertakes the final smoothing work and guarantees the surface smoothness of the reinforced concrete wall of the foundation pit. The blade spiral angles of the first spiral frame 601 and the second spiral frame 602 are designed to be opposite. By setting the blade spiral angles of the first spiral frame 601 and the second spiral frame 602, the smoothing sequence of the concrete on the foundation pit wall by the first spiral frame 601 is ensured. The direction of the soil spiral dispersion and smoothing is opposite to the direction of the second spiral frame 602 on the concrete of the pit wall. After the concrete of the pit wall undergoes two spiral dispersion treatments with opposite spiral angles, the concrete has a better contact and filling effect on the uneven surface of the pit wall, which can effectively reduce the hollow problem of the pit wall and enhance the stability of the wall. Moreover, after the concrete reinforced wall undergoes two spiral dispersion treatments with opposite spiral angles, the concrete surface presents an interlaced spiral shape, ensuring the flatness of the final flattening and rolling treatment of the concrete by the roller frame 603. The first swing arm 604 provides rotational support for the first spiral frame 601 and also provides swing support for the first spiral frame 601. The extension and retraction adjustment of the first cylinder 605 can drive the first swing arm 604 to swing, thereby driving the first spiral frame 601 to swing and adjust, thus realizing the adjustment of the distance between the first spiral frame 601 and the foundation pit wall, which can realize spiral dispersion smoothing treatment for concrete walls with different thickness requirements; the second swing arm 606 provides rotational support for the second spiral frame 602 and also provides swing support for the second spiral frame 602. The extension and retraction adjustment of the second cylinder 607 can drive the second swing arm 606 to swing. The third cylinder 609 swings, which in turn drives the second spiral frame 602 to swing and adjust, thereby adjusting the distance between the second spiral frame 602 and the foundation pit wall. This allows for spiral dispersion and smoothing treatment of concrete walls with different thickness requirements. The third swing arm 608 provides rotational support for the roller frame 603 and swings to support the roller frame 603. The extension and retraction adjustment of the third cylinder 609 can drive the third swing arm 608 to swing, which in turn drives the roller frame 603 to swing and adjust, thereby adjusting the distance between the roller frame 603 and the foundation pit wall. This allows for flattening and rolling treatment of concrete walls with different thickness requirements. The two first cylinders 605 can be synchronously controlled using existing synchronous control technology to ensure that the two first cylinders 605 perform different movements, thereby ensuring the synchronous movement adjustment of both ends of the first screw frame 601; the two second cylinders 607 can be synchronously controlled using existing synchronous control technology to ensure that the two second cylinders 607 perform different movements, thereby ensuring the synchronous movement adjustment of both ends of the second screw frame 602; the two third cylinders 609 can be synchronously controlled using existing synchronous control technology to ensure that the two third cylinders 609 perform different movements, thereby ensuring the synchronous movement adjustment of both ends of the roller frame 603; The first cylinder 605, the second cylinder 607, and the third cylinder 609 can be controlled synchronously and asynchronously using existing control methods. This invention can be used for concrete spraying reinforcement of deep foundation pit walls in subway stations. Through the coordinated operation of an automated spraying system and a coating rack, it can effectively reduce the hollowness of the foundation pit walls and enhance wall stability. This device is suitable for complex geological conditions, prevents soil slippage, and improves construction efficiency.

[0024] Example 2 Please see Figures 1-2 and Figures 5-8This invention provides a technical solution: a concrete spraying reinforcement device for foundation pit walls. The outer walls of the first support leg 4 and the second support leg 5 are each horizontally provided with a flat insertion limiting mechanism 7. The flat insertion limiting mechanism 7 includes a support plate 701, a movable plate 702, and a base plate 703. The movable plate 702 is movably disposed between the support plate 701 and the base plate 703. Several insertion rods 704 are vertically arranged at the bottom of the movable plate 702, and several servo electric cylinders 705 are vertically arranged at the top of the movable plate 702. The top of the servo electric cylinders 705 is fixedly connected to the bottom of the support plate 701. The top of the base plate 703 has through holes matching the insertion rods 704. A rotatably connected support shaft 706 is vertically arranged at the center of the bottom of the base plate 703. Several third spiral brackets 707 are horizontally arranged on the outer wall of the support shaft 706. The top of the support shaft 706 passes through the base plate 703, the movable plate 702, and the support plate 701 and extends above the support plate 701. The support disk 701 has a first rotary drive mechanism 3 rotatably connected to a support shaft 706 at its top; the insertion rod 704 has a rotatably connected support rod 708 at its top center; the movable disk 702 has a first gear 709 rotatably connected horizontally at its inner center; the outer wall of the support rod 708 extends into the movable disk 702 and has a second gear 710 meshing with the first gear 709; the bottom of the support rod 708 has a support cylinder 711 inside the insertion rod 704; the outer wall of the support cylinder 711 has symmetrical vertical fan-shaped bars 712 on both sides; the outer wall of the support cylinder 711 has an arc-shaped bar 713 vertically on one side of the fan-shaped bars 712; the insertion rod 704 has several elastic inserts 714 horizontally arranged between the arc-shaped bars 713 and the fan-shaped bars 712; the outer wall of the insertion rod 704 has a through groove 715 matching the elastic inserts 714; and the movable disk 702 has a second rotary drive mechanism 716 with the first gear 709 at its top.

[0025] In one embodiment, the elastic insert 714 includes an insert 718, the outer wall of which is fitted with a spring 719. One end of the spring 719 is fixedly connected to the insert 718, and the other end of the spring 719 is fixedly connected to the inner wall of the insert rod 704. The insert 718 in the elastic insert 714 provides telescopic movement, and the spring 719 provides elastic telescopic support for the insert 718, ensuring the normal extension and elastic return of the insert 718. In the support cylinder 711... During rotation, the fan-shaped bar 712 and the arc-shaped bar 713 rotate with the support cylinder 711. When the insertion rod 718 is not extended from the through slot 715 of the insertion rod 704, the end of the insertion rod 718 located inside the insertion rod 704 contacts the outer wall of the support cylinder 711. As the arc-shaped bar 713 rotates, the outer wall of the arc-shaped bar 713 contacts and supports the end of the insertion rod 718, gradually pushing the insertion rod 718 outward. The spring 719 is compressed, and the insertion rod 718 extends out of the through slot 715 and inserts into the soil. The limit support effectively improves the stability of the insertion rod 704, thereby improving the stability of the first support foot 4 and the second support foot 5. Reverse rotation adjustment of the support cylinder 711 resets the arc-shaped bar 713, causes the spring 719 to rebound, and resets the insertion bar 718 back into the insertion rod 704. The second rotary drive mechanism 716 includes a third gear 720, a servo motor 721, and a reducer 722. The third gear 720 is rotatably mounted inside the movable disk 702. The servo motor 721 is connected to the third gear 720 via the reducer 722. When the second rotary drive mechanism 716 is working, the servo motor 721 drives the third gear 720 to rotate via the reducer 722. The third gear 720 drives the first gear 709 to rotate. The rotation of the first gear 709 drives multiple second gears 710 to rotate. The second gears 710 drive the support cylinder 711 to rotate via the support rod 708.

[0026] Working principle of the invention: Refer to the instruction manual appendix Figures 1-2 and Figures 5-8This invention, by setting up a flat insertion limiting mechanism 7, a support plate 701, a movable plate 702, a chassis 703, a third spiral frame 707, a servo electric cylinder 705, and an insertion rod 704, provides flat insertion limiting support to the ground on the outer side of the first support leg 4 and the second support leg 5, which can effectively improve the stability of the first support leg 4 and the second support leg 5, thereby improving the safety and stability of the inverted L-shaped support frame 1 during operation; the support plate 701, located at the top of the flat insertion limiting mechanism 7, serves as a support component, effectively ensuring the flat insertion limiting mechanism 7 For stability, the movable plate 702 is supported between the support plate 701 and the base plate 703, allowing the movable plate 702 to move up and down between the support plate 701 and the base plate 703; the base plate 703 is supported at the bottom of the flat insertion limiting mechanism 7, the third spiral frame 707 is supported at the bottom of the base plate 703 for rotation, and the servo electric cylinder 705 supports the movable plate 702 for lifting and lowering. The movable plate 702 can drive the insertion rod 704 to lift and lower, and the insertion rod 704 can pass through the through hole at the top of the base plate 703 and extend to the bottom of the base plate 703 to be inserted into the soil. In use, after the first support leg 4 and the second support leg 5 are placed, the servo cylinder 705 is retracted, the movable plate 702 and the insertion rod 704 move upward, and the insertion rod 704 moves above the third spiral frame 707, activating the first rotary drive mechanism 3. The first rotary drive mechanism 3 drives the third spiral frame 707 to rotate through the support shaft 706. The third spiral frame 707 contacts the ground at the bottom of the chassis 703. During the rotation of the third spiral frame 707, the soil at the bottom of the chassis 703 can be spirally scraped and cleaned. The uneven ground under the chassis 703 can be spirally scraped and cleaned, making the ground at the bottom of the chassis 703 flat. This can effectively improve the equipment's adaptability to uneven ground, thereby effectively improving the stability of the first support leg 4 and the second support leg 5. After cleaning the uneven ground under the chassis 703 by spiral scraping, the servo cylinder 705 is extended. The servo cylinder 705 drives the movable plate 702 to move downward. The movable plate 702 drives the insertion rod 704 to move downward. After the insertion rod 704 passes through the through hole of the chassis 703, it is inserted into the soil under the chassis 703. The insertion rod 704 is inserted and limited in the soil under the chassis 703, which can effectively improve the safety and stability of the first support foot 4 and the second support foot 5. Support rod 708 supports support cylinder 711 at the top of insert rod 704. Support cylinder 711 supports sector strip 712 and arc strip 713. Elastic inserts 714 are distributed on the outside of support cylinder 711. First gear 709 meshes with second gear 710 for drive. Second rotary drive mechanism 716 can drive first gear 709 to rotate. First gear 709 can drive multiple second gears 710 to rotate. Second gears 710 can drive support rod 708 to rotate. Support rod 708 drives support cylinder 711 to rotate. During rotation, the support cylinder 711 drives the fan-shaped bar 712 and the arc-shaped bar 713 to rotate. The positions of the fan-shaped bar 712 and the arc-shaped bar 713 change, and the arc-shaped bar 713 pushes the elastic plug 714 outward, so that the insert 718 of the elastic plug 714 moves out of the through groove 715 and inserts into the soil. The cooperation between the insert rod 704 and the elastic plug 714 can effectively improve the insertion limit stability of the insert rod 704, thereby improving the safety and stability of the first support foot 4 and the second support foot 5, thus improving the safety and stability of the inverted L-shaped support frame 1 during operation.

[0027] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A concrete spraying reinforcement device for foundation pit walls, comprising an inverted L-shaped support frame (1), a concrete spraying assembly (2), and a suspension assembly, characterized in that: The concrete spraying assembly (2) is slidably mounted on the outer wall of the vertical section of the inverted L-shaped support frame (1). The end of the suspension rope of the suspension assembly is fixedly connected to the top of the concrete spraying assembly (2). A number of spraying heads (201) are provided on the outer wall of the concrete spraying assembly (2) away from the inverted L-shaped support frame (1). A coating rack (6) is provided on the outer wall of the concrete spraying assembly (2) below the spraying heads (201). The outer wall of the coating rack (6) is provided with a first spiral frame (601), a second spiral frame (602) and a roller frame (603) that are movably connected. The first spiral frame (601), the second spiral frame (602) and the roller frame (603) are arranged in parallel.

2. The concrete spraying reinforcement device for foundation pit walls according to claim 1, characterized in that: The second screw frame (602) is located between the first screw frame (601) and the roller frame (603), and the blade helix angles of the first screw frame (601) and the second screw frame (602) are opposite.

3. The concrete spraying reinforcement device for foundation pit walls according to claim 1, characterized in that: The first spiral frame (601) has a first swing arm (604) rotatably connected at both ends. The first swing arm (604) is rotatably connected to the coating frame (6). The outer wall of the first swing arm (604) away from the first spiral frame (601) has a first cylinder (605). The first cylinder (605) away from the first swing arm (604) is rotatably connected to the coating frame (6).

4. The concrete spraying reinforcement device for foundation pit walls according to claim 1, characterized in that: The second spiral frame (602) is provided with a second swing arm (606) at both ends, which is rotatably connected. The second swing arm (606) is rotatably connected to the coating frame (6). The outer wall of the second swing arm (606) away from the second spiral frame (602) is provided with a second cylinder (607). The second cylinder (607) away from the second swing arm (606) is rotatably connected to the coating frame (6).

5. The concrete spraying reinforcement device for foundation pit walls according to claim 1, characterized in that: The roller frame (603) is provided with a third swing arm (608) at both ends, which is rotatably connected to the coating frame (6). The third swing arm (608) is rotatably connected to the coating frame (6). The outer wall of the third swing arm (608) away from the roller frame (603) is provided with a third cylinder (609). The third cylinder (609) away from the third swing arm (608) is rotatably connected to the coating frame (6).

6. The concrete spraying reinforcement device for foundation pit walls according to claim 1, characterized in that: The bottom of the horizontal section of the inverted L-shaped support frame (1) is provided with several first support feet (4) on the side away from the vertical section, and the bottom of the vertical section of the inverted L-shaped support frame (1) is provided with several second support feet (5).

7. The concrete spraying reinforcement device for foundation pit walls according to claim 6, characterized in that: The outer walls of the first support foot (4) and the second support foot (5) are respectively provided with a flat insertion limiting mechanism (7). The flat insertion limiting mechanism (7) includes a support plate (701), a movable plate (702) and a base plate (703). The movable plate (702) is movably disposed between the support plate (701) and the base plate (703). The bottom of the movable plate (702) is provided with several insertion rods (704) vertically. The top of the movable plate (702) is provided with several servo electric cylinders (705) vertically. The top of the servo electric cylinders (705) is fixedly connected to the bottom of the support plate (701). The top of the base plate (703) is provided with a through hole that matches the insertion rods (704).

8. The concrete spraying reinforcement device for foundation pit walls according to claim 7, characterized in that: The chassis (703) has a vertically connected support shaft (706) at the bottom center. The outer wall of the support shaft (706) has several third spiral frames (707) horizontally connected. The top of the support shaft (706) passes through the chassis (703), the movable disk (702) and the support disk (701) and extends to the top of the support disk (701). The top of the support disk (701) has a first rotary drive mechanism (3) for the support shaft (706) that is rotatably connected.

9. The concrete spraying reinforcement device for foundation pit walls according to claim 7, characterized in that: The top center of the insertion rod (704) is provided with a rotatably connected support rod (708). The center of the movable disk (702) is provided with a rotatably connected first gear (709). The outer wall of the support rod (708) extends into the interior of the movable disk (702) and is provided with a second gear (710) that meshes with the first gear (709). The bottom of the support rod (708) is provided inside the insertion rod (704) with a support cylinder (711). The outer walls of the support cylinder (711) are symmetrically vertically provided on both sides. The fan-shaped strip (712) has an arc-shaped strip (713) vertically arranged on one side of the outer wall of the support cylinder (711). The insert rod (704) has several elastic inserts (714) horizontally arranged between the arc-shaped strip (713) and the fan-shaped strip (712). The outer wall of the insert rod (704) has a through groove (715) that matches the elastic insert (714). The top of the movable disk (702) is provided with a second rotary drive mechanism (716) of the first gear (709).

10. The concrete spraying reinforcement device for foundation pit walls according to claim 9, characterized in that: The elastic insert (714) includes an insert (718), and a spring (719) is sleeved on the outer wall of the insert (718). One end of the spring (719) is fixedly connected to the insert (718), and the other end of the spring (719) is fixedly connected to the inner wall of the insert rod (704). The second rotary drive mechanism (716) includes a third gear (720), a servo motor (721), and a reducer (717). The third gear (720) is rotatably disposed inside the movable disk (702), and the servo motor (721) is connected to the third gear (720) through the reducer (717).

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