A foundation pit support structure

Abstract

The application discloses a foundation pit supporting structure, which comprises a retaining plate, a pressing mechanism and two anchor rods, the retaining plate is provided with two anchor rod holes, the anchor rods can pass through the anchor rod holes and be fixed in the soil layer, one end of each anchor rod is fixed with a mounting plate, the two ends of the mounting plate are respectively fixed with nuts, the nuts are internally threadedly connected with mounting bolts, the pressing mechanism can press the mounting bolts on the retaining plate, the pressing mechanism comprises a bolt sleeve, a track and a speed reducer, the two ends of the speed reducer are respectively fixed with the tracks, mounting holes are formed in the speed reducer and the tracks, mounting columns corresponding to the mounting holes are fixed on the retaining plate, the speed reducer and the tracks can be inserted on the retaining plate, the pressing mechanism can be conveniently mounted on the retaining plate through cooperation of the mounting holes and the mounting columns, the pressing mechanism can simultaneously tighten a plurality of mounting bolts, the retaining plate is conveniently fixed on the anchor rods, and the pressing mechanism improves the output torque through the speed reducer, so that the operator is more labor-saving.

Description

Technical Field

[0001] This invention relates to the field of building foundation pit technology, specifically to a foundation pit support structure. Background Technology

[0002] An excavation pit is a pit dug at the foundation design location according to the base elevation and foundation plane dimensions. The excavation pit is a temporary project, and its function is to provide a space so that the foundation masonry work can be carried out in the position specified in the design. During the construction process, in order to avoid the collapse of the excavation pit as much as possible, the excavation pit is usually supported. In the existing technology, anchor rods are usually inserted into the soil layer first, then concrete is filled into the anchor rods, and then retaining plates are fixed to the anchor rods to reinforce the excavation pit. Among them, fixing the retaining plates is relatively complicated and laborious. Summary of the Invention

[0003] The purpose of this invention is to provide a foundation pit support structure to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a foundation pit support structure, comprising a retaining plate, a clamping mechanism, and two anchor rods. The retaining plate has two anchor rod holes, through which the anchor rods can pass and be fixed in the soil layer. One end of each anchor rod is fixed with an installation plate, and both ends of the installation plate are fixed with nuts. The nuts are internally threaded with installation bolts. The clamping mechanism can clamp the installation bolts onto the retaining plate. The clamping mechanism includes a bolt sleeve, a rail, and a reducer. The rail is fixed to both ends of the reducer. Mounting holes are provided on the reducer and the rail. Mounting posts corresponding to the mounting holes are fixed on the retaining plate. The reducer and the rail can be inserted into the retaining plate through the mounting holes. A hexagonal tenon is fixed to the input end of the reducer. The hexagonal tenon can cooperate with a wrench. The center of a rocker arm is fixed to the output end of the reducer. Connecting rods are hinged to both ends of the rocker arm. The other end of each connecting rod is hinged to a slider. Each slider is slidably set on a corresponding rail. Two telescopic rods are hinged to each slider. The bolt sleeve is fixed to the other end of each telescopic rod. The bolt sleeve includes an inner ring, an outer ring, and a clutch mechanism. The inner ring can mate with the hexagonal head of the mounting bolt, the outer ring is fixed to the telescopic rod, and the clutch mechanism enables the outer ring to drive the inner ring during the outward movement and to allow the outer ring to spin freely during the return movement.

[0005] Preferably, the reducer includes a housing, a sun gear, an internal gear ring, a planet carrier, and planet gears. A track is fixed on the housing, and mounting holes are provided on the housing. The internal gear ring is fixed inside the housing. The internal gear ring meshes with multiple planet gears. The multiple planet gears mesh with a sun gear. A hexagonal tenon is fixed on the sun gear. The planet gears are hinged to the planet carrier. A rocker center is fixed on the planet carrier.

[0006] Preferably, the clutch mechanism includes a pawl, a ratchet, and a return spring. The inner ring is rotatably disposed inside the outer ring. The ratchet is fixed on the inner ring, and the pawl is rotatably disposed on the outer ring. One end of the return spring is fixed on the outer ring, and the other end presses against the pawl.

[0007] Preferably, the anchor bolt includes a sheath, a blade, and a folding mechanism. A bracket is fixed inside the sheath, and multiple folding mechanisms are provided on the bracket. The folding mechanisms can unfold the blade, allowing the blade to embed into the soil layer.

[0008] Preferably, the folding mechanism includes a large gear and multiple small gears, each small gear having a blade fixed on it, the multiple small gears meshing with a large gear, and the large gears of the multiple folding mechanisms being fixed on a main shaft.

[0009] Preferably, the outer side of the blade is fixed with multiple spikes.

[0010] Compared with the prior art, the beneficial effects of the present invention are: the clamping mechanism can be easily installed on the retaining plate through the cooperation of the mounting hole and the mounting column; the clamping mechanism can tighten multiple mounting bolts at the same time, which is convenient for fixing the retaining plate to the anchor rod; the clamping mechanism increases the output torque through the reducer, making it easier for the operator to work. Attached Figure Description

[0011] Figure 1 This is an isometric view of the present invention; Figure 2 The isometric view of the present invention shows the clamping mechanism removed. Figure 3 This is a cross-sectional view of the speed reducer of the present invention; Figure 4 This is a sectional view of the bolt sleeve of the present invention; Figure 5 This is a schematic diagram of the bracket of the present invention; Figure 6 This is a schematic diagram of the folding mechanism of the present invention. Figure 7 For the present invention Figure 1 A magnified view of part A.

[0012] In the diagram: 1. Retaining plate, 2. Mounting plate, 3. Nut, 4. Mounting bolt, 5. Track, 6. Mounting column, 7. Hexagonal tenon, 8. Rocker arm, 9. Connecting rod, 10. Slider, 11. Telescopic rod, 20. Anchor bolt, 21. Sheath, 22. Bracket, 23. Folding mechanism, 24. Blade, 25. Large gear, 26. Small gear, 27. Main shaft, 28. Spike, 30. Reducer, 31. Housing, 32. Internal gear ring, 33. Planetary gear, 34. Sun gear, 35. Planetary carrier, 40. Bolt sleeve, 41. Inner ring, 42. Outer ring, 43. Ratchet, 44. Pawl, 45. Return spring. Detailed Implementation

[0013] 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.

[0014] This invention provides a technical solution: a foundation pit support structure, such as... Figure 1 , 2 As shown, it includes a retaining plate 1, a clamping mechanism, and two anchor rods 20. The retaining plate 1 has two anchor rod holes, through which the anchor rods 20 can pass and be fixed in the soil. One end of each anchor rod 20 is fixed with an mounting plate 2, and both ends of the mounting plate 2 are fixed with nuts 3. The nuts 3 are internally threaded with mounting bolts 4. The clamping mechanism can clamp the mounting bolts 4 onto the retaining plate 1.

[0015] like Figure 1 , 7 As shown, the clamping mechanism includes a bolt sleeve 40, a rail 5, and a reducer 30. The rail 5 is fixed to both ends of the reducer 30. Mounting holes are provided on the reducer 30 and the rail 5. Mounting posts 6 corresponding to the mounting holes are fixed on the retaining plate 1. The reducer and rail can be inserted into the retaining plate through the mounting holes. The clamping mechanism can be easily installed onto the retaining plate 1 through the cooperation of the mounting holes and mounting posts 6. A hexagonal tenon 7 is fixed to the input end of the reducer 30, which can cooperate with a wrench. The center of a rocker arm 8 is fixed to the output end of the reducer 30. Connecting rods 9 are hinged to both ends of the rocker arm 8, and the other end of each connecting rod 9 is hinged to a slider 10. Each slider 10 is slidably mounted on a corresponding track 5. Two telescopic rods 11 are hinged to each slider 10. The telescopic rod 11 is a common part with a sliding rod that slides inside the cylinder. The other end of each telescopic rod 11 is fixed with the bolt sleeve 40. The rocker arm 8 can swing, thereby driving the two connecting rods 9 to move. The movement of each connecting rod 9 can drive the slider 10 to move, thereby driving the two telescopic rods 11 to rotate and extend. The rotation of each telescopic rod 11 can drive the bolt sleeve 40 to swing. The swing of the rocker arm 8 can drive multiple bolt sleeves 40 to swing at the same time, which can tighten multiple mounting bolts 4 at the same time, making it convenient to fix the retaining plate 1 to the anchor rod 20.

[0016] like Figure 4 As shown, the bolt sleeve 40 includes an inner ring 41, an outer ring 42, and a clutch mechanism. The inner ring 41 can mate with the hexagonal head of the mounting bolt 4. The outer ring 42 is fixed to the telescopic rod 11. The clutch mechanism enables the outer ring 42 to drive the inner ring 41 during the outward journey and to allow the outer ring 42 to idle during the return journey.

[0017] To improve the efficiency of labor saving, such as Figure 4 As shown, the reducer 30 includes a housing 31, a sun gear 34, an internal gear ring 32, a planet carrier 35, and planet gears 33. A track 5 is fixed on the housing 31, and mounting holes are provided on the housing 31. The internal gear ring 32 is fixed inside the housing 31, and multiple planet gears 33 are meshed with the internal gear ring 32. The multiple planet gears 33 are meshed with a sun gear 34. A hexagonal tenon 7 is fixed on the sun gear 34. The planet gears 33 are hinged to the planet carrier 35. A rocker arm 8 is fixed to the center of the planet carrier 35. By using a wrench to swing the hexagonal tenon 7, the planet gears 33 can be rotated, which in turn drives the planet carrier 35 to rotate, thereby causing the rocker arm 8 to swing.

[0018] like Figure 4 As shown, the clutch mechanism includes a pawl 44, a ratchet 43, and a return spring 45. The inner ring 41 is rotatably disposed within the outer ring 42, and the ratchet 43 is fixed on the inner ring 41. The pawl 44 is rotatably disposed on the outer ring 42. One end of the return spring 45 is fixed on the outer ring 42, and the other end presses against the pawl 44. When the outer ring 42 is in the outward direction, it can drive the pawl 44 to push the ratchet 43 to rotate, which in turn drives the inner ring 41 to rotate. The rotation of the inner ring 41 can drive the mounting bolt 4 to make a helical motion. When the outer ring 42 is in the return direction, it can drive the pawl 44 to slide over the ratchet 43, and the ratchet 43 remains stationary.

[0019] To facilitate fixing the anchor bolt 20, such as Figure 5 , 6 As shown, the anchor bolt 20 includes a sheath 21, a blade 24, and a folding mechanism 23. One end of the sheath 21 is fixed with an installation plate 2, and a bracket 22 is fixed inside the sheath 21. Multiple folding mechanisms 23 are provided on the bracket 22. The folding mechanism 23 can unfold the blade 24, and the blade 24 can be embedded in the soil layer.

[0020] To facilitate folding of the blade 24, such as Figure 5 , 6 As shown, the folding mechanism 23 includes a large gear 25 and multiple small gears 26. Each small gear 26 is fixed with a blade 24. Each large gear 25 meshes with multiple small gears 26. The large gears 25 of the multiple folding mechanisms 23 are fixed on a main shaft 27. One end of the main shaft 27 is fixed to the drilling rig. The drilling rig drives the main shaft 27 to rotate. The rotation of the main shaft 27 can drive the multiple large gears 25 to rotate. Each large gear 25 drives the multiple small gears 26 to rotate. Each small gear 26 drives the blade 24 to rotate and embed into the soil layer. After the blade 24 is unfolded, the main shaft 27 is unloaded from the drilling rig, and concrete is filled into the sheath 21.

[0021] To improve the stability of the blade, such as Figure 6As shown, multiple spikes 28 are fixed to the outer side of the blade 24.

[0022] Working process: First, insert the anchor rod 20 into the soil layer, then insert the retaining plate 1 onto the anchor rod 20, then fix one end of the main shaft 27 onto the drilling rig. Drive the main shaft 27 to rotate through the drilling rig. The rotation of the main shaft 27 can drive multiple large gears 25 to rotate. Each large gear 25 drives multiple small gears 26 to rotate. Each small gear 26 drives the blade 24 to rotate and embed into the soil layer. After the blade 24 is unfolded, the main shaft 27 is removed from the drilling rig, and concrete is filled into the sheath 21 to fix the anchor rod 20 in the soil layer. Screw the mounting bolt 4 into the nut 3, then insert the reducer 30 and the rail 5 onto the retaining plate 1. Next, put the bolt sleeve 40 onto the hexagonal head of the mounting bolt 4. Using a wrench to swing the hexagonal tenon 7 can drive the planetary gear 33 to rotate, which in turn drives the planetary carrier 35 to rotate, thereby driving the rocker arm 8 to swing. The swing of the rocker arm 8 drives the two connecting rods 9 to move. The movement of each connecting rod 9 can drive the slider 10 to move, which in turn drives the two telescopic rods 11 to rotate and extend. The rotation of each telescopic rod 11 can drive the bolt sleeve 40 to swing. The swing of the rocker arm 8 can drive multiple bolt sleeves 40 to swing at the same time, which can tighten multiple mounting bolts 4 at the same time, making it easier to fix the retaining plate 1 to the anchor rod 20.

[0023] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A foundation pit support structure, characterized in that: The device includes a retaining plate (1), a clamping mechanism, and two anchor rods (20). The retaining plate (1) has two anchor rod holes, through which the anchor rods (20) can pass and be fixed in the soil. One end of each anchor rod (20) is fixed with an installation plate (2), and the two ends of the installation plate (2) are respectively fixed with nuts (3). The nuts (3) are internally threaded with installation bolts (4). The clamping mechanism can clamp the installation bolts (4) onto the retaining plate (1). The clamping mechanism includes a bolt sleeve (40), a rail (5), and a reducer (30). The rail (5) is fixed at both ends of the reducer (30). Mounting holes are provided on the reducer (30) and the rail (5). Mounting posts (6) corresponding to the mounting holes are fixed on the retaining plate (1). The reducer (30) and the rail (5) can be inserted into the retaining plate (1) through the mounting holes. A hexagonal tenon (7) is fixed at the input end of the reducer (30). The hexagonal tenon (7) can cooperate with a wrench. The center of a rocker arm (8) is fixed at the output end of the reducer (30). One end of a connecting rod (9) is hinged to both ends of the rocker arm (8). The other end of each connecting rod (9) is hinged to a slider (10). Each slider (10) is slidably set on the corresponding rail (5). One end of two telescopic rods (11) is hinged to each slider (10). The bolt sleeve (40) is fixed to the other end of each telescopic rod (11). The bolt sleeve (40) includes an inner ring (41), an outer ring (42) and a clutch mechanism. The inner ring (41) can mate with the hexagonal head of the mounting bolt (4). The outer ring (42) is fixed to the telescopic rod (11). The clutch mechanism enables the outer ring (42) to drive the inner ring (41) on the outward trip and to make the outer ring (42) spin freely on the return trip. The reducer (30) includes a housing (31), a sun gear (34), an internal gear ring (32), a planet carrier (35), and planet gears (33). A track (5) is fixed on the housing (31), and a mounting hole is provided on the housing (31). The internal gear ring (32) is fixed inside the housing (31). The internal gear ring (32) meshes with multiple planet gears (33). The multiple planet gears (33) mesh with a sun gear (34). A hexagonal tenon (7) is fixed on the sun gear (34). The planet gears (33) are hinged on the planet carrier (35). A rocker arm (8) is fixed on the center of the planet carrier (35).

2. A foundation pit support structure according to claim 1, wherein: The clutch mechanism includes a pawl (44), a ratchet (43), and a return spring (45). The inner ring (41) is rotatably disposed inside the outer ring (42). The ratchet (43) is fixed on the inner ring (41), and the pawl (44) is rotatably disposed on the outer ring (42). One end of the return spring (45) is fixed on the outer ring (42), and the other end presses against the pawl (44).

3. A foundation pit support structure according to claim 1, wherein: The anchor bolt (20) includes a sheath (21), a blade (24) and a folding mechanism (23). One end of the sheath (21) is fixed with an installation plate (2). A bracket (22) is fixed inside the sheath (21). Multiple folding mechanisms (23) are provided on the bracket (22). The folding mechanism (23) can unfold the blade (24) and the blade (24) can be embedded in the soil.

4. The foundation pit support structure according to claim 3, characterized in that: The folding mechanism (23) includes a large gear (25) and multiple small gears (26). Each small gear (26) is fixed with a blade (24). Multiple small gears (26) mesh with a large gear (25). The large gears (25) of multiple folding mechanisms (23) are fixed on a main shaft (27).

5. A retaining structure according to claim 4, wherein: Multiple spikes (28) are fixed to the outside of the blade (24).

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