Building foundation pit supporting structure

Abstract

The utility model discloses a building foundation pit supporting structure, and relates to the technical field of building construction. The device comprises a base and two supporting plates, two sliding grooves are formed in the top of the base, a first sliding rod is connected to the inner walls of the sliding grooves in a sliding mode, a ratchet opening is formed in the back face of the first sliding rod, a pawl is rotationally connected to the interior of the base, the outer surface of the pawl makes contact with the outer surface of the ratchet opening, and a spring is fixedly connected to the back face of the pawl. The back of the spring is fixedly connected with the interior of the base. The supporting plates are arranged, specifically, the two supporting plates are pushed, a first sliding rod slides on the inner wall of a sliding groove, the supporting plates are attached to the surface of a foundation pit and used for adjusting the distance between the two supporting plates, meanwhile, a pawl is always attached to the outer surface of a ratchet opening under the elastic force action of a spring, and therefore adjustment of different foundation pit widths can be achieved; the problems that an existing building foundation pit supporting structure is difficult to adjust according to different foundation pit widths, the use scene is limited, and adaptability is poor are solved.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, and in particular relates to a building foundation pit support structure. Background Technology

[0002] Foundation pit support refers to the measures taken to support, reinforce, and protect the sidewalls and surrounding environment of a foundation pit to ensure the safety of underground structure construction and the surrounding environment. However, existing foundation pit support structures still have some problems.

[0003] For example, the authorized utility model patent with publication number CN212477743U includes a support frame; the upper end of the support frame is provided with a pad, a partition is installed and fixed in the middle of the support frame, and reinforcing components are provided between the upper end of the support frame and the partition and between the lower end of the support frame and the partition. All parts of this structure have a fixed length, making it difficult to adjust according to different pit widths, which limits its application scenarios and makes it less adaptable. Utility Model Content

[0004] The purpose of this utility model is to provide a support structure for building foundation pits. By setting support plates, specifically by pushing two support plates, a sliding rod slides on the inner wall of the groove, causing the support plates to adhere to the surface of the foundation pit. This is used to adjust the distance between the two support plates. At the same time, due to the spring force, the pawl always keeps close to the outer surface of the ratchet tooth, preventing the sliding rod from retracting. This allows for adjustment of different foundation pit widths, solving the problem that existing building foundation pit support structures are difficult to adjust according to different foundation pit widths, thus limiting their application scenarios and resulting in poor adaptability.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a foundation pit support structure, comprising a base and two support plates. Two sliding grooves are formed on the top of the base, and sliding rods are slidably connected to the inner walls of the grooves. Opposite sides of the two sliding rods are rotatably connected to corresponding sides of the two support plates via pins. A ratchet tooth is formed on the back of each sliding rod. A pawl is rotatably connected inside the base, with its outer surface contacting the outer surface of the ratchet tooth. A spring is fixedly connected to the back of the pawl, and its back is fixedly connected to the inside of the base. Through the sliding engagement of the grooves and sliding rods, combined with the self-locking mechanism of the pawl and ratchet tooth, automatic locking can be achieved after the support plates are deployed, improving the stability and safety of the support structure.

[0007] Furthermore, a toggle block is fixedly connected to the top of the pawl, and a cover plate is hinged to the top of the base near the pawl. The toggle block facilitates manual disengagement of the pawl, simplifying the adjustment process, while the cover plate protects the internal structure of the base from external impacts or debris, extending the service life of the device.

[0008] Furthermore, a storage box is fixedly connected to the center of the top of the base. A spring is installed inside the storage box, and two dustproof cloths are wound around the storage box by the spring. A buckle is fixedly connected to the left side of the dustproof cloth, and a buckle is fixedly connected to the top of the slide rod. The inner wall of the buckle is in contact with the outer surface of the buckle. The dustproof cloths are automatically extended and retracted by the spring to cover the gap of the slide groove, preventing soil and stones from falling or dust from affecting the sliding function of the slide groove. The quick connection design of the buckle and the buckle plate facilitates the fixing and disassembly of the dustproof cloths, improving construction efficiency.

[0009] Furthermore, a support rod is rotatably connected to the top of the sliding rod one via a pin, and a sliding rod two is slidably connected inside the support rod. The opposite sides of the two sliding rod two are rotatably connected to the corresponding sides of the two support plates via pins. The sliding connection between the support rod and the sliding rod two forms a retractable secondary support structure, which enhances the compressive strength of the support plate and adapts to the needs of foundation pit support at different angles.

[0010] Furthermore, the slide bar two has a toothed opening on its front side, and an adjustment box is fixedly connected to the outer surface of the support rod. A gear is rotatably connected to the inner wall of the adjustment box, and the back of the gear meshes with the front of the toothed opening. A worm gear is fixedly connected to the top of the gear, and the top of the worm gear is rotatably connected to the inner wall of the adjustment box. A worm is rotatably connected to the inner wall of the adjustment box, and the right side of the worm meshes with the left side of the worm gear. A hand crank is fixedly connected to the front of the worm, and the hand crank passes through the front of the adjustment box and extends to the outside. The worm gear transmission mechanism meshes with the gear toothed opening to achieve precise adjustment of the support angle, and the worm's self-locking characteristic prevents the slide bar two from sliding accidentally. The hand crank provides a convenient manual operation method.

[0011] Furthermore, each of the four corners of the base is fixedly connected to a fixing block, and a fixing cone is slidably connected inside the fixing block. The fixing cones at the four corners of the base are inserted into the ground to enhance the anchoring effect between the base and the ground, prevent the support structure from sliding as a whole, and improve the overturning resistance.

[0012] Furthermore, each of the four corners of the support plate is slidably connected with a second fixed cone. The second fixed cone at each corner of the support plate can be independently inserted into the soil layer to disperse local pressure, prevent the support plate from deforming due to uneven stress, and improve its adaptability to irregular foundation pit walls.

[0013] This utility model has the following beneficial effects:

[0014] 1. This utility model, by setting up support plates, specifically by pushing two support plates, causes the sliding rod to slide on the inner wall of the groove, so that the support plates are attached to the surface of the foundation pit, which is used to adjust the distance between the two support plates. At the same time, due to the elastic force of the spring, the pawl is always in close contact with the outer surface of the ratchet tooth, preventing the sliding rod from retracting. This allows for adjustment of different foundation pit widths, improves the adaptability of the support plates, and the pawl and ratchet tooth form a self-locking mechanism, effectively improving the stability of the support structure.

[0015] 2. This utility model, by setting an adjustment box, specifically by rotating a hand crank, causes the worm gear to rotate on the inner wall of the adjustment box. The worm gear drives the worm wheel and gear to rotate simultaneously on the inner wall of the adjustment box, thereby causing the gear to drive the slide rod two to slide on the inner wall of the support rod through the toothed edge. At this time, the slide rod two, the slide rod one, and the support rod all rotate through the pin shaft, so that the angle of the support plate can be adjusted to adapt to the sidewalls of the foundation pit with different slopes, thus further improving the adaptability of the support plate.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the slide groove structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the ratchet structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the cover plate of this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the adjustment box of this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Base; 11. Slide groove; 111. Slide rod one; 112. Racket tooth; 113. Pawl; 114. Spring; 115. Actuating block; 116. Cover plate; 12. Storage box; 121. Dustproof cloth; 122. Buckle plate; 123. Buckle; 13. Support rod; 131. Slide rod two; 132. Racket tooth; 14. Adjustment box; 141. Gear; 142. Worm gear; 143. Worm; 144. Hand crank; 15. Fixing block; 151. Fixing cone one; 2. Support plate; 21. Fixing cone two. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0026] Please see Figures 1-5 As shown, this utility model is a support structure for a building foundation pit, including a base 1 and two support plates 2. The top of the base 1 has two sliding grooves 11. The inner wall of the sliding grooves 11 is slidably connected to a sliding rod 111. The opposite sides of the two sliding rods 111 are rotatably connected to the corresponding sides of the two support plates 2 through pins. The back of the sliding rod 111 has a ratchet opening 112. The base 1 has a rotatably connected pawl 113. The outer surface of the pawl 113 contacts the outer surface of the ratchet opening 112. The back of the pawl 113 is fixedly connected to a spring 114. The back of the spring 114 is fixedly connected to the inside of the base 1.

[0027] A toggle block 115 is fixedly connected to the top of the pawl 113. A cover plate 116 is hinged to the top of the base 1 near the pawl 113. By setting support plates 2, specifically by pushing two support plates 2, the slide bar 111 slides on the inner wall of the slide groove 11, so that the support plates 2 are attached to the surface of the pit. This is used to adjust the distance between the two support plates 2. At the same time, due to the elastic force of the spring 114, the pawl 113 is always in close contact with the outer surface of the ratchet tooth 112, preventing the slide bar 111 from retracting. This allows for adjustment of different pit widths, improving the adaptability of the support plates 2. The pawl 113 and the ratchet tooth 112 form a self-locking mechanism, effectively improving the stability of the support structure.

[0028] A storage box 12 is fixedly connected to the center of the top of the base 1. A spring is installed inside the storage box 12. Two dustproof cloths 121 are wound around the storage box 12 by the spring. A buckle 122 is fixedly connected to the left side of the dustproof cloth 121. A buckle 123 is fixedly connected to the top of the slide rod 111. The inner wall of the buckle 122 is in contact with the outer surface of the buckle 123.

[0029] The top of slide rod 111 is rotatably connected to support rod 13 via a pin. Slide rod 2 131 is slidably connected inside support rod 13. The opposite sides of the two slide rods 2 131 are rotatably connected to the corresponding sides of the two support plates 2 via pins.

[0030] The sliding rod 131 has a toothed opening 132 on its front. An adjusting box 14 is fixedly connected to the outer surface of the support rod 13. A gear 141 is rotatably connected to the inner wall of the adjusting box 14. The back of the gear 141 meshes with the front of the toothed opening 132. A worm gear 142 is fixedly connected to the top of the gear 141. The top of the worm gear 142 is rotatably connected to the inner wall of the adjusting box 14. A worm 143 is rotatably connected to the inner wall of the adjusting box 14. The right side of the worm 143 meshes with the left side of the worm gear 142. A hand crank 144 is fixedly connected to the front of the worm 143 and passes through the adjusting box 14. Extending outwards from the front, an adjustment box 14 is provided. Specifically, by rotating the hand crank 144, the worm gear 143 rotates on the inner wall of the adjustment box 14. The worm gear 143 drives the worm wheel 142 and the gear 141 to rotate simultaneously on the inner wall of the adjustment box 14. This causes the gear 141 to drive the slide rod 131 to slide on the inner wall of the support rod 13 through the toothed end 132. At this time, the slide rod 131, the slide rod 111, and the support rod 13 all rotate through the pin shaft, allowing the support plate 2 to be angled to adapt to different slopes of the pit sidewall, further improving the adaptability of the support plate 2.

[0031] The base 1 has four fixed blocks 15 at its bottom corners, and fixed cones 151 are slidably connected inside the fixed blocks 15.

[0032] The four corners of the support plate 2 are all slidably connected with fixed cones 21.

[0033] A specific application of this embodiment is as follows: In use, the fixing cone 151 is inserted deep into the ground to fix the base 1. Then, the two support plates 2 are pushed, causing the slide rod 111 to slide on the inner wall of the groove 11, so that the support plates 2 are attached to the surface of the pit. This is used to adjust the distance between the two support plates 2. At the same time, due to the elastic force of the spring 114, the pawl 113 is always in close contact with the outer surface of the ratchet tooth 112, preventing the slide rod 111 from retracting. Then, the dustproof cloth 121 is pulled, so that the inside of the buckle plate 122 contacts the outer surface of the buckle 123, fixing the dustproof cloth 121 to the top of the groove 11, preventing dust from entering the inner wall of the groove 11. Due to the internal spring of the storage box 12, The spring action and contact buckle fixation allow the dustproof cloth 121 to retract automatically. Then, the angle of the support plate 2 is adjusted by rotating the hand crank 144, causing the worm gear 143 to rotate on the inner wall of the adjustment box 14. The worm gear 143 drives the worm wheel 142 and gear 141 to rotate on the inner wall of the adjustment box 14, thereby causing the gear 141 to drive the slide rod 131 to slide on the inner wall of the support rod 13 through the toothed end 132. At this time, the slide rod 131, the slide rod 111, and the support rod 13 all rotate through the pin, so that the angle of the support plate 2 is adjusted to be consistent with the angle of the pit. Then, the fixing cone 21 is inserted into the pit to complete the fixing of the support plate 2.

[0034] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A foundation pit support structure, comprising a base (1) and two support plates (2), wherein the top of the base (1) has two sliding grooves (11), and a sliding rod (111) is slidably connected to the inner wall of the sliding groove (11), characterized in that: The two sliding rods (111) are rotatably connected to the corresponding sides of the two support plates (2) via pins on opposite sides. The sliding rod (111) has a ratchet opening (112) on its back. The base (1) is rotatably connected to a pawl (113). The outer surface of the pawl (113) is in contact with the outer surface of the ratchet opening (112). A spring (114) is fixedly connected to the back of the pawl (113). The back of the spring (114) is fixedly connected to the inside of the base (1).

2. The foundation pit support structure according to claim 1, characterized in that, A toggle block (115) is fixedly connected to the top of the pawl (113), and a cover plate (116) is hinged to the top of the base (1) on the side near the pawl (113).

3. The foundation pit support structure according to claim 2, characterized in that, A storage box (12) is fixedly connected to the center of the top of the base (1). A spring is installed inside the storage box (12). Two dustproof cloths (121) are wound around the storage box (12) by the spring. A buckle plate (122) is fixedly connected to the left side of the dustproof cloth (121). A buckle (123) is fixedly connected to the top of the slide rod (111). The inner wall of the buckle plate (122) is in contact with the outer surface of the buckle (123).

4. The foundation pit support structure according to claim 3, characterized in that, The top of the slide rod (111) is rotatably connected to the support rod (13) via a pin. The support rod (13) is slidably connected to the slide rod (13). The opposite sides of the two slide rods (131) are rotatably connected to the corresponding sides of the two support plates (2) via pins.

5. A building foundation pit support structure according to claim 4, characterized in that, The sliding rod (131) has a toothed opening (132) on its front side. An adjustment box (14) is fixedly connected to the outer surface of the support rod (13). A gear (141) is rotatably connected to the inner wall of the adjustment box (14). The back of the gear (141) meshes with the front of the toothed opening (132). A worm gear (142) is fixedly connected to the top of the gear (141). The top of the worm gear (142) is rotatably connected to the inner wall of the adjustment box (14). A worm (143) is rotatably connected to the inner wall of the adjustment box (14). The right side of the worm (143) meshes with the left side of the worm gear (142). A hand crank (144) is fixedly connected to the front of the worm (143). The hand crank (144) passes through the front of the adjustment box (14) and extends to the outside.

6. A building foundation pit support structure according to claim 5, characterized in that, The base (1) has four fixed corners at the bottom with fixed blocks (15), and a fixed cone (151) is slidably connected inside the fixed block (15).

7. A building foundation pit support structure according to claim 6, characterized in that, The support plate (2) has fixed cones (21) slidingly connected inside each of its four corners.

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