A device for correcting the slope of a foundation pit excavation

Abstract

The application discloses a kind of building site foundation pit excavation slope correction device in the technical field of foundation pit excavation slope correction, including scraper, the bottom of scraper is provided with chamfer, the middle position of scraper top is equipped with driving element, eccentric vibration mechanism is installed in driving element, driving element is vertically slidably connected with driving frame, the vertical spring of driving element is fixedly connected with driving element at both ends, driving frame is horizontally slidably connected with rack, the horizontal spring of driving frame is fixedly connected with rack at both sides, angle adjusting mechanism is installed on the top of rack, sliding slot is formed in the both sides of rack, sliding slot is horizontally slidably connected with slide, slide is vertically slidably connected with vertical rod, vertical rod bottom is threadedly connected with the feeding frame slidably connected with scraper, reset spring is fixedly connected between feeding frame and scraper;In the application, scraper is scraped and corrected to slope surface, and soil is recycled, and when pit and depression are encountered, it can be filled and compacted, to reduce the difficulty of slope construction.

Description

A slope correction device for foundation pit excavation on construction sites Technical Field

[0001] This invention relates to the field of foundation pit excavation slope correction technology, specifically to a foundation pit excavation slope correction device for construction sites. Background Technology

[0002] An excavation pit is a pit dug at the foundation design location according to the base elevation and foundation plan dimensions. Before excavation, an excavation plan should be determined based on geological and hydrological data, combined with the conditions of nearby buildings, and waterproofing and drainage work should be carried out. For shallow excavations, slope protection can be used to stabilize the soil slope, and the slope gradient should be determined according to relevant construction regulations. To prevent collapse and ensure construction safety, when the excavation depth or filling height exceeds a certain limit, a slope with a certain gradient (h:b is called the slope) should be constructed along its edge. A slope that is too small increases costs; a slope that is too large is unsafe. Therefore, the slope gradient should be determined based on the excavation depth, soil quality, and groundwater conditions.

[0003] The slope is created by excavating with an excavator. However, the slope created by the excavator cannot meet the requirements, and the slope surface has pits and depressions, making it impossible to pour concrete further. The slope needs to be corrected and leveled manually. Manually correcting the slope is very difficult and requires a lot of time and effort, which increases the cost of construction. Summary of the Invention

[0004] The technical problem of this invention is to provide a slope correction device for excavation of foundation pits on construction sites. The scraper scrapes and corrects the slope surface, and the feeder circulates the soil. When the soil encounters pits or depressions, it can fill and compact them, thereby reducing the difficulty of slope construction.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A scraper, the scraper having an L-shaped structure and a chamfered bottom, a driving component installed at the top center of the scraper, an eccentric vibration mechanism installed within the driving component, a driving frame vertically slidably connected to the driving component, vertical springs fixedly connected to both the upper and lower ends of the driving component, a frame horizontally slidably connected to the driving frame, horizontal springs fixedly connected to both sides of the driving frame, an angle adjustment mechanism installed at the top of the frame, sliding grooves on both sides of the frame, sliding seats horizontally slidably connected to the sliding grooves, vertically slidably connected to the sliding seats, a feeding frame threadedly connected to the bottom of the vertical rods and slidably connected to the scraper, a return spring fixedly connected between the feeding frame and the scraper, right-angled teeth arranged in a linear array fixedly connected within the feeding frame, and a soil-blocking frame and a soil-discharging frame respectively installed at both ends of the feeding frame.

[0006] As a further embodiment of the present invention, the eccentric vibration mechanism includes a drive motor installed in the drive component, a turntable mounted on the output shaft of the drive motor, a positioning screw fixedly connected to the turntable, an eccentric wheel slidably connected to the positioning screw, and a fixing nut threadedly connected to the positioning screw.

[0007] As a further embodiment of the present invention, the angle adjustment mechanism includes a base, a bracket fixedly connected to the base, a cross rotatably connected to the bracket, a rotating frame rotatably connected to the cross, a rotating sleeve fixedly connected to both the rotating frame and the base, a telescopic rod installed between the rotating sleeves, and an accessory installed on the top of the base.

[0008] As a further embodiment of the present invention, a rotary motor is installed between the rotating frame and the machine frame.

[0009] As a further embodiment of the present invention, the feeding frame is fixedly connected to an outer side plate and a bottom plate at both ends, the bottom plate is fixedly connected to an inner side plate, the outer side plate and the soil retaining frame are both fixedly connected to positioning bolts, and the inner side plate and the soil discharge frame are both provided with positioning holes.

[0010] As a further embodiment of the present invention, the soil retaining frame is provided with a chamfer for intercepting soil clods, and the soil discharge frame is provided with a chamfer that matches the right-angle teeth and has a guide block installed inside for guiding soil clods.

[0011] As a further embodiment of the present invention, splicing bolts are fixedly connected to both ends and the middle of the top of the scraper, and auxiliary vibrators are installed on both sides of the scraper by splicing bolts, and a splicing plate is provided between the auxiliary vibrators and the scraper.

[0012] As a further embodiment of the present invention, a baffle is fixedly connected to the top of the feeding rack.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. In this invention, the reciprocating motion of the drive component drives the scraper to compact the slope surface. The scraper moves along the slope surface to flatten the protruding parts. Simultaneously, as the feeding frame moves towards the top of the slope with the scraper, it drives the threadedly connected upright to move. The upright drives the slide to move within the chute. When the slide reaches the end of the chute, the opposing force of the upright stops the feeding frame. The soil on the feeding frame flies out under centrifugal force. When the flying soil falls back onto the feeding frame, it is intercepted by the right-angle teeth and does not continue to fall. The soil rises step by step within the feeding frame until it enters the discharge frame, where it slides down the slope. At the top of the slope, soil slides down the slope under the action of gravity. When it encounters a depression, the soil fills it until it slides to the bottom of the slope and enters the retaining frame. This process is repeated continuously, eliminating the need for manual slope leveling and filling of depressions. This reduces the difficulty and time of construction, thereby reducing the cost of building construction. The scraper with the correct inclination not only scrapes the slope to the required slope and compacts it to prevent soil from sliding down and accumulating, which would result in an uneven slope, but also circulates the soil scraped from protruding parts. When the soil circulates to the depressions on the slope, it fills them, eliminating the need for manual soil transportation for filling depressions and leveling.

[0015] 2. In this invention, the tilt of the scraper along its length can be changed by altering the length of the telescopic rod in the scraper's length direction, allowing the scraper to be adjusted to a preset slope relative to the slope's width direction. When the length of the telescopic rod in the scraper's width direction is changed, the scraper can be adjusted to a preset slope relative to the slope's length direction. This is useful for construction site slopes where the elevation gradually decreases or increases, such as in river channels, further improving the device's practicality.

[0016] 3. In this invention, the rotation of the rotating frame enables the machine frame to drive the drive frame to rotate, and the drive component then drives the scraper to rotate, thereby changing the front-to-back distance between the upper and lower ends of the scraper. On the one hand, this makes it suitable for use in situations where there are corners on slopes, and on the other hand, it slows down the speed at which soil falls along the scraper, allowing the soil to fully fill the depressions and preventing insufficient filling that could affect the flatness of the slope. By adjusting the distance between the eccentric wheel and the center of the drive motor output shaft, the centrifugal force generated by the eccentric wheel's oscillation can be adjusted, thereby changing the amplitude of the scraper's oscillation. This makes it suitable for slopes with different degrees of tightness, thus increasing the practicality of the device.

[0017] 4. In this invention, the soil extraction frame and the soil retaining frame can be installed on the outer side plate and the inner side plate respectively by the positioning bolts, which facilitates the installation and disassembly of the soil extraction frame and the soil retaining frame; in addition, the inner side plate and the outer side plate can also be connected together by the positioning bolts, that is, the two scrapers are connected to each other, increasing the area that the scrapers can level. In use, the number of scrapers can be increased or decreased according to the width of the slope, so that the device can be used on slopes of different widths. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a schematic diagram of the overall structure of the present invention;

[0021] Figure 3 is a schematic diagram of the scraper and its connection structure of the present invention;

[0022] Figure 4 is an exploded structural diagram of the drive frame and its connection relationship of the present invention;

[0023] Figure 5 is a schematic diagram of the eccentric vibration mechanism of the present invention;

[0024] Figure 6 is an exploded structural diagram of the scraper and its connection relationship of the present invention;

[0025] Figure 7 is an exploded structural diagram of the feeding rack and its connection relationship of the present invention;

[0026] Figure 8 is a schematic diagram of the excavation frame and its connection structure of the present invention;

[0027] Figure 9 is a schematic diagram of the earth-blocking frame and its connection structure of the present invention;

[0028] Figure 10 is a schematic diagram of the angle adjustment mechanism of the present invention;

[0029] The attached diagram lists the components represented by each number as follows:

[0030] 1. Scraper; 11. Outer side plate; 12. Base plate; 13. Inner side plate; 16. Splicing bolt; 17. Auxiliary vibrator; 18. Splicing plate; 21. Drive motor; 22. Turntable; 24. Eccentric wheel; 31. Drive component; 32. Drive frame; 33. Vertical spring; 34. Frame; 35. Horizontal spring; 36. Slide groove; 37. Slide seat; 38. Upright pole; 41. Base; 42. Bracket; 43. Cross; 44. Rotating frame; 45. Rotating sleeve; 46. Telescopic rod; 47. Assembly parts; 5. Rotary motor; 6. Feeding rack; 61. Return spring; 62. Right angle tooth; 63. Soil retaining frame; 64. Guide block; 65. Soil discharge frame; 66. Baffle. Detailed Implementation

[0031] 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.

[0032] Please refer to Figures 1-10. This invention provides a technical solution: It includes a scraper 1, which has an L-shaped structure and a chamfered bottom. A driving component 31 is installed at the top center of the scraper 1. An eccentric vibration mechanism is installed inside the driving component 31. A driving frame 32 is vertically slidably connected to the driving component 31. Vertical springs 33 are fixedly connected to both the upper and lower ends of the driving component 31. A frame 34 is horizontally slidably connected to the driving frame 32. Horizontal springs 33 are fixedly connected to both sides of the driving frame 32 and the frame 34. 5. An angle adjustment mechanism is installed on the top of the frame 34. Slide grooves 36 are provided on both sides of the frame 34. Slide seats 37 are slidably connected to the slide grooves 36 laterally. Vertical rods 38 are slidably connected to the slide seats 37 vertically. The bottom of the vertical rods 38 is threadedly connected to a feeding frame 6 that is slidably connected to the scraper 1. A return spring 61 is fixedly connected between the feeding frame 6 and the scraper 1. Right-angle teeth 62 arranged in a linear array are fixedly connected inside the feeding frame 6. Soil-blocking frame 63 and soil-discharging frame 65 are respectively installed at both ends of the feeding frame 6.

[0033] During operation, the scraper 1 is adjusted to the predetermined slope of the pit through the angle adjustment mechanism. The scraper 1 moves along the slope of the pit edge and scrapes the slope to level and correct the slope. The eccentric vibration mechanism works, and the drive component 31 makes elliptical motion under centrifugal force. The tension of the vertical spring 33 and the horizontal spring 35 protects the drive component 31 and the scraper 1, preventing the scraper 1 from encountering hard particles such as stones, which could cause damage to the drive component 31 and the scraper 1.

[0034] When the drive component 31 moves upward or downward (away from or near the slope), it is influenced by the drive frame 32, the slope, and the vertical spring 33. Therefore, the distance the drive component 31 moves up or down is small, meaning it does not detach from the slope and will not prevent the slope from being leveled and corrected. The drive component 31 compresses or stretches the vertical spring 33, and simultaneously, it drives the scraper 1, which is fixedly connected to it, to move upward or downward. The vertical spring 33 applies a counterforce to the drive component 31. When the drive component 31 moves downward, it compacts the leveled slope surface. When the drive component 31 moves to the left or right (towards the top or bottom of the slope), the drive frame 32 moves accordingly. The drive frame 32 drives the scraper 1 to move to the left or right through the drive component 31. The scraper 1 can push some soil that cannot be pressed into the soil to the side. During this process, the scraper 1 moves up, down, left and right continuously. The slope surface that the scraper 1 passes through is corrected, compacted and smoothed by the scraper 1, which prevents soil collapse and increases the flatness of the slope and the safety factor of the slope.

[0035] Additionally, when scraper 1 moves left or right (towards the top or bottom of the slope), the feeding frame 6 moves along with scraper 1. It should be noted that when scraper 1 moves along the slope towards the top, the feeding frame 6 drives the upright 38 to move, and the upright 38 drives the sliding block 37 to move within the chute 36. When the sliding block 37 reaches the end of the chute 36, both the sliding block 37 and the feeding frame 6 immediately stop moving, while scraper 1 continues to move. The scraper 1 uses a tension return spring 61 to compensate for the displacement difference between the feeding frame 6 and the scraper 1. The soil on the feeding frame 6 flies out under centrifugal force. When the soil falls again, it moves from the bottom retaining frame 63 to above the adjacent right-angle tooth 62. The hypotenuse of the right-angle tooth 62 guides the flying soil, directing it into the area above the right-angle tooth 62. The right-angled teeth 62 can block the soil and prevent it from continuously sliding down, thus enabling intermittent soil transport. The soil rises sequentially on the right-angled teeth 62 until it moves into the soil discharge frame 65. The soil discharge frame 65 sends the soil out from the top of the scraper 1. The soil that is sent out slides down along the edge of the scraper 1 under the action of gravity until it encounters a depression and fills it. Conversely, when it encounters a raised area, the scraper 1 scrapes the raised part flat and the scraped soil slides down along the scraper 1 until it falls into the soil retaining frame 63. This cycle repeats. When the scraper 1 moves along the slope towards the bottom of the slope, the upright 38 drives the sliding seat 37 to move in the opposite direction in the chute 36. When the sliding seat 37 moves to the end of the chute 36, the scraper 1 stops moving towards the bottom of the slope.

[0036] In summary, the reciprocating motion of the drive component 31 drives the scraper 1 to compact the slope. The scraper 1, moving along the slope, can smooth out the protruding parts of the slope. Simultaneously, as the feeding frame 6 moves towards the top of the slope with the scraper 1, it drives the threadedly connected upright 38 to move. The upright 38 drives the slide 37 to move within the chute 36. When the slide 37 reaches the end of the chute 36, the opposing force of the upright 38 stops the feeding frame 6. The soil on the feeding frame 6 flies out under centrifugal force. When the flying soil falls back onto the feeding frame 6, it is intercepted by the right-angle teeth 62 and will not continue to fall. The soil rises step by step within the feeding frame 6 until it enters the discharge frame 65. Inside, the soil slides from the excavation frame 65 to the top of the slope. Under the action of gravity, the soil slides down the slope and fills the pits when it encounters them, until the soil slides to the bottom of the slope and enters the retaining frame 63. This cycle repeats, eliminating the need for manual slope leveling and pit filling, reducing construction difficulty and time, and thus reducing construction costs. The scraper 1 with the set inclination can not only scrape the slope to the required slope and compact it to prevent soil from sliding down and accumulating, which would result in an uneven slope, but also circulate the soil scraped from the protruding parts. When the soil circulates to the concave part of the slope, it fills it, eliminating the need for manual soil transportation for pit filling and leveling.

[0037] As a further embodiment of the present invention, the eccentric vibration mechanism includes a drive motor 21 installed in the drive component 31, a turntable 22 installed on the output shaft of the drive motor 21, a positioning screw fixedly connected to the turntable 22, an eccentric wheel 24 slidably connected to the positioning screw, and a fixing nut threadedly connected to the positioning screw.

[0038] During operation, the output shaft of the drive motor 21 drives the turntable 22 to rotate. The turntable 22 drives the eccentric wheel 24 to rotate around the axis of the output shaft of the drive motor 21 through the positioning bolt. Under the action of centrifugal force, the eccentric wheel 24 drives the drive motor 21 to move. The drive motor 21 drives the drive component 31 to swing, thereby realizing the swing of the drive component 31 up, down and left and right. In addition, by adjusting the distance between the eccentric wheel 24 and the axis of the output shaft of the drive motor 21, the centrifugal force generated by the swing of the eccentric wheel 24 can be adjusted, thereby changing the swing amplitude of the scraper 1. It is suitable for use on slopes with different tightness, thereby increasing the practicality of the device.

[0039] As a further embodiment of the present invention, the angle adjustment mechanism includes a base 41, a bracket 42 fixedly connected to the base 41, a cross 43 rotatably connected to the bracket 42, a rotating frame 44 rotatably connected to the cross 43, a rotating sleeve 45 fixedly connected to both the rotating frame 44 and the base 41, a telescopic rod 46 installed between the rotating sleeves 45, and an accessory 47 installed on the top of the base 41.

[0040] When the angle is adjusted, the length of the telescopic rod 46 in the length direction of the scraper 1 changes, which can change the inclination of the scraper 1 in the length direction and adjust the scraper 1 to a preset slope in the width direction of the slope. When the length of the telescopic rod 46 in the width direction of the scraper 1 changes, the scraper 1 can be adjusted to a preset slope in the length direction of the slope. For example, in the case of river channels or construction site slopes where the altitude gradually decreases or increases, the practicality of the device is further improved. The accessory 47 can connect the device to mobile equipment such as excavators.

[0041] As a further embodiment of the present invention, a rotary motor 5 is installed between the rotating frame 44 and the frame 34;

[0042] During operation, the rotating frame 44 drives the machine frame 34 to rotate, the machine frame 34 drives the drive frame 32 to rotate, and the drive component 31 then drives the scraper 1 to rotate, thereby changing the front and back distance between the upper and lower ends of the scraper 1. On the one hand, it can be used for slope corners, and on the other hand, it can slow down the speed at which soil falls along the scraper 1, so that the soil can fully fill the depression and avoid insufficient filling of the depression, which would affect the flatness of the slope.

[0043] As a further embodiment of the present invention, the feeding frame 6 is fixedly connected to an outer plate 11 and a bottom plate 12 at both ends, the bottom plate 12 is fixedly connected to an inner plate 13, the outer plate 11 and the soil retaining frame 63 are both fixedly connected to positioning bolts, and the inner plate 13 and the soil discharge frame 65 are both provided with positioning holes.

[0044] During operation, the soil removal frame 65 and the soil retaining frame 63 can be installed on the outer side plate 11 and the inner side plate 13 respectively using positioning bolts, which facilitates the installation and disassembly of the soil removal frame 65 and the soil retaining frame 63. In addition, the inner side plate 13 and the outer side plate 11 can also be connected together using positioning bolts, that is, the two scrapers 1 can be connected to each other, increasing the area that the scrapers 1 can scrape flat. During use, the number of scrapers 1 can be increased or decreased according to the width of the slope, so that the device can be used on slopes of different widths.

[0045] As a further embodiment of the present invention, the soil retaining frame 63 is provided with a chamfer for intercepting soil clods, and the soil discharge frame 65 is provided with a chamfer that matches the right-angle teeth 62 and a guide block 64 for guiding soil clods is installed inside.

[0046] During operation, the chamfered corners of the retaining frame 63 can shovel soil from the slope onto the retaining frame 63. As the amount of soil on the retaining frame 63 increases, some soil moves to the inside of the retaining frame 63. The soil inside the retaining frame 63 can enter the feeding frame 6 and enter circulation.

[0047] The guide block 64 guides the soil inside the excavation frame 65, allowing the soil to slide from the side of the excavation frame 65 to the top of the slope, thus preparing for filling the pit.

[0048] As a further embodiment of the present invention, splicing bolts 16 are fixedly connected to both ends and the middle of the top of the scraper 1, and auxiliary vibrators 17 are installed on both sides of the scraper 1 through the splicing bolts 16. A splicing plate 18 is provided between the auxiliary vibrator 17 and the scraper 1.

[0049] During operation, the splicing bolts 16 can install the auxiliary vibrator 17 at different positions of the scraper 1, ensuring that the compaction degree of the slope is similar at each position after multiple scrapers 1 are spliced, reducing the uneven compaction degree of the slope and affecting the use of the slope.

[0050] As a further embodiment of the present invention, a baffle 66 is fixedly connected to the top of the feeding rack 6;

[0051] During operation, the baffle 66 can block the soil that is thrown out by centrifugal force, preventing the soil from flying out of the feeding frame 6 and preventing the soil from falling on the compacted slope surface, which would affect the cleanliness of the slope surface and increase soil loss.

Claims

1. A slope correction device for excavation of foundation pits at construction sites, comprising a scraper (1), characterized in that: The scraper (1) has an L-shaped structure and a chamfer at the bottom. A drive component (31) is installed at the top center of the scraper (1). An eccentric vibration mechanism is installed inside the drive component (31). The drive component (31) is vertically slidably connected to a drive frame (32). Vertical springs (33) are fixedly connected to both the upper and lower ends of the drive component (31). The drive frame (32) is horizontally slidably connected to a frame (34). Horizontal springs (35) are fixedly connected to both sides of the drive frame (32) to the frame (34). An angle adjustment mechanism is installed at the top of the frame (34). The mechanism includes a sliding groove (36) on both sides of the frame (34), a sliding seat (37) connected to the sliding groove (36) laterally, a vertical rod (38) connected to the sliding seat (37) vertically, a feeding frame (6) connected to the bottom of the vertical rod (38) and slidably connected to the scraper (1), a return spring (61) fixedly connected between the feeding frame (6) and the scraper (1), right-angle teeth (62) arranged in a linear array fixedly connected inside the feeding frame (6), and a soil retaining frame (63) and a soil discharge frame (65) respectively installed at both ends of the feeding frame (6).

2. The slope correction device for foundation pit excavation at a construction site according to claim 1, characterized in that: The eccentric vibration mechanism includes a drive motor (21) installed in the drive component (31), a turntable (22) is installed on the output shaft of the drive motor (21), a positioning screw is fixedly connected to the turntable (22), an eccentric wheel (24) is slidably connected to the positioning screw, and a fixing nut is threadedly connected to the positioning screw.

3. A slope correction device for foundation pit excavation at a construction site according to claim 1 or 2, characterized in that: The angle adjustment mechanism includes a base (41), a bracket (42) fixedly connected to the base (41), a cross (43) rotatably connected to the bracket (42), a rotating frame (44) rotatably connected to the cross (43), a rotating sleeve (45) fixedly connected to both the rotating frame (44) and the base (41), a telescopic rod (46) installed between the rotating sleeves (45), and an accessory (47) installed on the top of the base (41).

4. The slope correction device for foundation pit excavation at a construction site according to claim 3, characterized in that: A rotary motor (5) is installed between the rotating frame (44) and the machine frame (34).

5. The slope correction device for foundation pit excavation at a construction site according to claim 4, characterized in that: The feeding rack (6) is fixedly connected to an outer plate (11) and a bottom plate (12) at both ends. The bottom plate (12) is fixedly connected to an inner plate (13). The outer plate (11) and the soil retaining frame (63) are both fixedly connected to positioning bolts. The inner plate (13) and the soil discharge frame (65) are both provided with positioning holes.

6. The slope correction device for foundation pit excavation at a construction site according to claim 5, characterized in that: The soil retaining frame (63) is provided with a chamfer for intercepting soil clods, and the soil discharge frame (65) is provided with a chamfer that matches the right-angle teeth (62) and is equipped with a guide block (64) for guiding soil clods inside.

7. A slope correction device for foundation pit excavation at a construction site according to claim 6, characterized in that: The scraper (1) is fixedly connected to the top two ends and the middle with splicing bolts (16). The scraper (1) is equipped with auxiliary vibrators (17) on both sides by splicing bolts (16). A splicing plate (18) is provided between the auxiliary vibrator (17) and the scraper (1).

8. A slope correction device for foundation pit excavation on a construction site according to claim 7, characterized in that: A baffle (66) is fixedly connected to the top of the feeding rack (6).

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