Foundation pit excavating device for building construction

Abstract

The utility model discloses a foundation pit excavating device for building construction, which relates to the technical field of building construction and comprises a support frame, a lifting component and a moving component. The lifting assembly is in sliding connection with the inner side of the supporting frame, the moving assembly is installed in the supporting frame at the rear end of the lifting assembly and rotationally connected with the lifting assembly, an adjusting frame is fixedly connected to the bottom of the lifting assembly, a first bucket is rotationally installed on one side of the adjusting frame, and a second bucket is rotationally connected to the other side of the adjusting frame. A pair of hydraulic rods is symmetrically and rotationally installed on the two sides of the adjusting frame, and the ends of the two hydraulic rods are rotationally connected with the top of the first bucket and the top of the second bucket correspondingly. The scraper blade is controlled to move downwards, soil attached to the side wall of the excavator bucket can be scraped downwards, meanwhile, the soil at the bottom of the connecting plate can be shaken off through the material shaking component, it is ensured that the soil on the inner wall of the excavator bucket is completely shaken out of a foundation pit, and the follow-up foundation pit excavation effect is prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a foundation pit excavation device for building construction. Background Art

[0002] Building construction refers to production activities during the implementation phase of engineering construction. The foundation pit is an earth pit excavated at the foundation design location according to the base elevation and foundation plane dimensions. Excavating the foundation pit is a part of building construction.

[0003] Existing foundation pit excavation devices generally use a drill bit. When the drill bit drills through stones, small pieces of broken stones will get stuck in the threads of the drill bit, causing damage to the drill bit and increasing the wear of the drill bit.

[0004] In the prior art, a Chinese patent with a publication number of CN219952089U is proposed to solve the above-mentioned technical problems. The technical solution disclosed in the patent document is as follows: a civil engineering foundation pit excavation device, including an excavator body, an excavator head is arranged on one side of the excavator body, a first shell is fixedly installed on one side of the excavator head, a second shell is movably arranged on the first shell, a drill bit is rotatably installed on the bottom of the second shell, a worm gear is sleeved on the outer surface of the drill bit, a scraper mechanism is rotatably installed on the outer surface of the drill bit, a third shell is fixedly installed on one side of the excavator head, and an electric motor is provided inside the third shell. The utility model comprises an excavator body, an excavator head, a first shell, a second shell, a drill bit, a worm gear, a stone scraping mechanism, a third shell, a worm gear, a motor cavity and a servo motor, so as to effectively clean out the broken small stones stuck in the threads of the drill bit, and prevent the broken small stones from getting stuck in the threads of the drill bit and causing damage to the drill bit and increasing the wear of the drill bit. However, the excavator head of the device may easily adhere to a large amount of soil on its surface during the excavation process, and the soil may be easily brought back into the foundation pit after being excavated, thereby affecting the excavation effect of the foundation pit. Utility Model Content

[0005] The purpose of the utility model is to provide a foundation pit excavation device for building construction to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A foundation pit excavation device for construction, comprising a support frame, a lifting assembly and a moving assembly; the lifting assembly is slidably connected to the inner side of the support frame, a moving assembly is installed inside the support frame at the rear end of the lifting assembly, the moving assembly is rotatably connected to the lifting assembly, an adjusting frame is fixedly connected to the bottom of the lifting assembly, a first bucket is rotatably installed on one side of the adjusting frame, and a second bucket is rotatably connected on the other side of the adjusting frame, a pair of hydraulic rods are symmetrically rotatably installed on both sides of the adjusting frame, the ends of the two hydraulic rods are respectively rotatably connected to the tops of the first bucket and the second bucket, the insides of the first bucket and the second bucket are both rotatably installed with screws through bearings, motors are fixedly installed on the tops of the first bucket and the second bucket at the rear end of the hydraulic rods, the output shafts of the two motor ends are respectively fixedly connected to the two screws, scrapers are rotatably installed on the peripheries of the two screws, the two scrapers are respectively fitted with the inner walls of the first bucket and the second bucket, a material shaking component is arranged inside the two scrapers, and the two material shaking components are respectively used to shake the material on the top surfaces inside the first bucket and the second bucket, and a controller is fixedly installed on the front side of the support frame.

[0008] The above-mentioned technical solution is adopted. In this solution, after an excavation is completed and the soil is brought out of the interior of the foundation pit, the output shafts of the two motors are controlled to rotate respectively, which can drive the two screws to rotate respectively, and at the same time drive the two scrapers to move downward respectively, so that the two scrapers move downward along the side walls of the first bucket and the second bucket respectively, thereby being able to scrape off the soil adhered to the side walls of the first bucket and the second bucket respectively.

[0009] A further improvement of the technical solution of the utility model is that the material shaking component includes a fixed plate, which is fixedly connected to the inner wall of the scraper, a connecting plate is provided at the bottom of the fixed plate, a plurality of second springs are fixedly installed at the bottom inside the fixed plate, and the bottom of each second spring is fixedly connected to the connecting plate.

[0010] The above-mentioned technical solution is adopted. In this solution, during the downward movement of the scraper, the elastic force of the second spring itself can drive the connecting plate to shake up and down. At the same time, through the action of gravity, the soil adhered to the bottom of the connecting plate can be shaken downward, thereby preventing the soil from adhering to the inner walls of the first bucket and the second bucket and causing the soil to fall back into the foundation pit again, thereby avoiding affecting the excavation effect of the foundation pit.

[0011] A further improvement of the technical solution of the utility model is that a limiting plate is fixedly installed on the top of the connecting plate outside the second spring, a sliding groove matching the shape of the limiting plate is opened inside the fixed plate, and the limiting plate is slidably connected to the sliding groove.

[0012] The above technical solution is adopted. In this solution, by installing a limit plate, the sliding trajectory of the connecting plate at the bottom of the fixed plate can be guided and limited, ensuring that the connecting plate maintains a straight line movement at the bottom of the fixed plate, and sharing the tension for the second spring, avoiding the failure of the tension of the second spring and causing the connection plate to separate from the fixed plate, thereby protecting both the connecting plate and the second spring, and preventing mud from adhering to the top of the connecting plate inside the limit plate, which makes it impossible to completely remove the mud, further ensuring that the mud can be completely shaken off.

[0013] A further improvement of the technical solution of the utility model is that: a pair of baffles are provided at both ends of the adjusting frame, the two baffles are respectively fitted with the outer walls of the first bucket and the second bucket, a plurality of first springs are fixedly installed on both sides of the adjusting frame at the outer end of the hydraulic rod, each first spring is fixedly connected between the two baffles, a connecting block is slidably installed inside the adjusting frame, both ends of the connecting block are fixedly connected between the two baffles, and a pushing component is provided on one side of the hydraulic rod on the other side of the adjusting frame, and the pushing component is used to push the connecting block.

[0014] The above technical solution is adopted, in which two hydraulic rods are used to drive the first bucket and the second bucket to rotate, so that the first bucket and the second bucket fit each other, thereby facilitating the wrapping of soil inside the first bucket and the second bucket, so as to facilitate the removal of the excavated soil.

[0015] A further improvement of the technical solution of the utility model is that the other side of the connecting block is an inclined surface inclined toward one side of the top.

[0016] The above technical solution is adopted, in which the other side of the connecting block is set as a slope inclined toward the top side. When the push plate moves to one side, the slope can be squeezed, so that the connecting block automatically moves downward and the baffle can be driven to move downward at the same time.

[0017] A further improvement of the technical solution of the utility model is that the pushing component comprises a pushing plate, and a surface on one side of the pushing plate and an inclined surface of the connecting block are pressed against each other.

[0018] The above-mentioned technical solution is adopted. In this solution, when the hydraulic rod drives the second bucket to move downward, it can drive the push plate to move to one side, squeeze the connecting block downward, and drive the baffle plate to move downward, thereby blocking the connection position of the first bucket and the second bucket, preventing soil from leaking through the first bucket and the second bucket, and further preventing soil from falling back into the foundation pit, thereby improving the effect of foundation pit excavation.

[0019] A further improvement of the technical solution of the utility model is that a fixed block is fixedly installed on the other side of the adjustment frame on the top of the push plate, a third spring is fixedly connected to the bottom of the fixed block, a pressure plate is fixedly installed on the bottom of the third spring, and the bottom of the pressure plate fits with the top of the push plate.

[0020] By adopting the above technical solution, in this solution, the pressure plate can be pressed downward by the elastic force of the third spring itself, thereby forming downward pressure on the push plate, preventing the push plate from rotating upward and being unable to press the connecting block downward.

[0021] A further improvement of the technical solution of the utility model is that a plurality of stoppers are fixedly installed at the bottom of the first bucket, a plurality of limit blocks are fixedly connected to the bottom of the second bucket, each stopper and each limit block are located on the same horizontal line, and each stopper and each limit block are staggered.

[0022] The above-mentioned technical solution is adopted. In this solution, after the two hydraulic rods drive the first bucket and the second bucket to fit together, each stop block and each limit block can be engaged with each other, so that the bottom of the connection position between the first bucket and the second bucket can be sealed, further preventing the soil from falling back into the foundation pit, and improving the effect of foundation pit excavation.

[0023] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0024] 1. The utility model provides a foundation pit excavation device for construction. After two hydraulic rods respectively drive a first bucket and a second bucket to rotate to wrap soil, and after a moving assembly is used to move the first bucket and the second bucket away from the top of the foundation pit, the two hydraulic rods are used to drive the first bucket and the second bucket to separate from each other, so that most of the soil automatically falls downward, and the cooperation between the motor and the screw rod can drive two scrapers to respectively scrape off the soil adhered to the side walls of the first bucket and the second bucket, and the cooperation between the material shaking parts can automatically shake off the soil adhered to the bottom of the connecting plate, thereby avoiding the soil adhering to the inner walls of the first bucket and the second bucket and causing the soil to fall back into the foundation pit again, thereby improving the effect of foundation pit excavation.

[0025] 2. The utility model provides a foundation pit excavation device for construction. When the hydraulic rod drives the second bucket to rotate downward, it can drive the push plate to move to one side, and use the third spring to squeeze the pressure plate downward, thereby forming downward pressure on the push plate. At the same time, it can squeeze the connecting block downward and automatically drive the baffle plate to move downward, thereby covering the position where the two ends of the first bucket and the second bucket are connected, thereby preventing soil from leaking through the two ends inside the first bucket and the second bucket, and further preventing soil from falling back into the foundation pit.

[0026] 3. The utility model provides a foundation pit excavation device for construction. After the first bucket and the second bucket are fitted together, the blocking block and the limiting block are also engaged with each other, thereby sealing the bottom of the connection position between the first bucket and the second bucket, preventing soil from falling back into the foundation pit from the bottom of the internal connection between the first bucket and the second bucket, and further improving the effect of foundation pit excavation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The utility model will be further described below in conjunction with the accompanying drawings.

[0028] Figure 1 It is a three-dimensional diagram of the utility model;

[0029] Figure 2 It is a schematic diagram of the partial structure of the cross section of the support frame of the utility model;

[0030] Figure 3 It is a schematic diagram of the partial structure of the first bucket cross section of the utility model;

[0031] Figure 4 For the utility model Figure 3 The enlarged structural diagram at A in the middle;

[0032] Figure 5 This is a schematic diagram of the partial explosion structure of the material shaking component of the utility model;

[0033] Figure 6 It is a schematic diagram of the partial structure of the second cross-section of the adjustment frame of the utility model;

[0034] Figure 7 For the utility model Figure 6 The enlarged structural diagram at B in the middle;

[0035] Figure 8 It is a schematic diagram of the partial structure of the second form of the connecting block of the utility model.

[0036] In the figure: 1. support frame; 2. lifting component; 3. adjustment frame; 4. controller; 5. first bucket; 501. block; 6. second bucket; 601. limit block; 7. baffle; 701. connecting block; 702. first spring; 8. scraper; 9. material shaking component; 901. fixed plate; 902. connecting plate; 903. second spring; 904. limit plate; 10. moving component; 12. screw; 1201. motor; 13. hydraulic rod; 15. pushing component; 1501. push plate; 1502. fixed block; 1503. third spring; 1504. pressure plate. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below in conjunction with the embodiments:

[0038] Example 1

[0039] like Figure 1 , Figure 3 and Figure 4 As shown, the utility model provides a foundation pit excavation device for construction, including a support frame 1, a lifting assembly 2 and a moving assembly 10; the lifting assembly 2 is slidably connected to the inner side of the support frame 1, and the moving assembly 10 is installed inside the support frame 1 at the rear end of the lifting assembly 2, and the moving assembly 10 is rotatably connected to the lifting assembly 2, and the bottom of the lifting assembly 2 is fixedly connected to an adjusting frame 3, and a first bucket 5 is rotatably installed on one side of the adjusting frame 3, and a second bucket 6 is rotatably connected on the other side of the adjusting frame 3. A pair of hydraulic rods 13 are symmetrically rotatably installed on both sides of the adjusting frame 3, and the ends of the two hydraulic rods 13 are respectively rotatably connected to the tops of the first bucket 5 and the second bucket 6, and the insides of the first bucket 5 and the second bucket 6 are both rotatably installed with screws 12 through bearings, and the tops of the first bucket 5 and the second bucket 6 at the rear end of the hydraulic rod 13 are fixedly installed with motors 1201, and the output shafts at the ends of the two motors 1201 are respectively connected to the two screws 1 2 are fixedly connected, scrapers 8 are rotatably installed on the peripheries of the two screw rods 12, and the two scrapers 8 are respectively fitted with the inner walls of the first bucket 5 and the second bucket 6, and material shaking components 9 are arranged inside the two scrapers 8, and the two material shaking components 9 are respectively used to shake the material on the top surface inside the first bucket 5 and the second bucket 6, and a controller 4 is fixedly installed on the front side of the support frame 1, and the material shaking component 9 includes a fixed plate 901, which is fixedly connected to the inner wall of the scraper 8, and a connecting plate 902 is arranged at the bottom of the fixed plate 901, and a plurality of second springs 903 are fixedly installed at the bottom inside the fixed plate 901, and the bottom of each second spring 903 is fixedly connected to the connecting plate 902, and a limiting plate 904 is fixedly installed on the top of the connecting plate 902 outside each second spring 903, and a sliding groove matching the shape of the limiting plate 904 is opened inside the fixed plate 901, and the limiting plate 904 is slidably connected with the sliding groove.

[0040] In this embodiment, after one excavation is completed and the soil is brought out of the foundation pit, the output shafts of the two motors 1201 are controlled to rotate respectively, which can drive the two screws 12 to rotate respectively, and at the same time drive the two scrapers 8 to move downward respectively, so that the two scrapers 8 move downward along the side walls of the first bucket 5 and the second bucket 6 respectively, so as to scrape off the soil adhered to the side walls of the first bucket 5 and the second bucket 6 respectively; in the process of the scrapers 8 moving downward, the elastic force of the second spring 903 itself can drive the connecting plate 902 to shake up and down, and at the same time, through the action of gravity, the soil adhered to the bottom of the connecting plate 902 can be shaken down, thereby preventing the soil from adhering to the first bucket 5 and The inner wall of the second excavator 6 causes the soil to fall back into the foundation pit again, thereby avoiding affecting the excavation effect of the foundation pit; by installing the limit plate 904, the sliding trajectory of the connecting plate 902 at the bottom of the fixed plate 901 can be guided and limited, ensuring that the connecting plate 902 maintains a straight line movement at the bottom of the fixed plate 901, and sharing the tension for the second spring 903, avoiding the failure of the tension of the second spring 903 and causing the connection plate 902 to separate from the fixed plate 901, protecting the connecting plate 902 and the second spring 903, and preventing the soil from adhering to the top of the connecting plate 902 inside the limit plate 904, which makes it impossible to completely remove the soil, further ensuring that the soil can be completely shaken off.

[0041] Example 2

[0042] like Figure 6 , Figure 7 and Figure 8 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, a pair of baffles 7 are provided at both ends of the adjustment frame 3, and the two baffles 7 are respectively fitted with the outer walls of the first bucket 5 and the second bucket 6, and a plurality of first springs 702 are fixedly installed on both sides of the adjustment frame 3 at the outer end of the hydraulic rod 13, and each first spring 702 is fixedly connected to the two baffles 7, and a connecting block 701 is slidably installed inside the adjustment frame 3, and both ends of the connecting block 701 are fixedly connected to the two baffles 7, and a pushing portion is provided on one side of the hydraulic rod 13 on the other side of the adjustment frame 3. Part 15, the pushing component 15 is used to push the connecting block 701, the other side of the connecting block 701 is an inclined surface inclined toward one side of the top, the pushing component 15 includes a push plate 1501, the surface of one side of the push plate 1501 and the inclined surface of the connecting block 701 are pressed against each other, a fixed block 1502 is fixedly installed on the other side of the adjustment frame 3 on the top of the push plate 1501, the bottom of the fixed block 1502 is fixedly connected with a third spring 1503, the bottom of the third spring 1503 is fixedly installed with a pressing plate 1504, and the bottom of the pressing plate 1504 is in contact with the top of the push plate 1501.

[0043] In this embodiment, two hydraulic rods 13 are used to drive the first bucket 5 and the second bucket 6 to rotate, so that the first bucket 5 and the second bucket 6 fit each other, so as to wrap the soil inside the first bucket 5 and the second bucket 6, so as to bring out the excavated soil; in the process of the hydraulic rod 13 driving the second bucket 6 to move downward, the push plate 1501 can be driven to move to one side, and at the same time, by setting the other side of the connecting block 701 to an inclined surface inclined toward one side of the top, the connecting block 701 can be moved by the push plate 1501 701 is squeezed downward, and at the same time, the baffle plate 7 is driven to move downward, covering the position where the two ends of the first bucket 5 and the second bucket 6 are connected, to prevent soil from leaking out through the two ends of the first bucket 5 and the second bucket 6, and further to prevent soil from falling back into the foundation pit, thereby improving the effect of foundation pit excavation; the elastic force of the third spring 1503 itself can squeeze the pressure plate 1504 downward, thereby forming a downward pressure on the push plate 1501, preventing the push plate 1501 from rotating upward and being unable to squeeze the connecting block 701 downward.

[0044] Example 3

[0045] like Figure 1 , Figure 3 and Figure 6 As shown, on the basis of Example 2, the utility model provides a technical solution: preferably, a plurality of blocks 501 are fixedly installed on the bottom of the first bucket 5, and a plurality of limit blocks 601 are fixedly connected to the bottom of the second bucket 6, each block 501 and each limit block 601 are located on the same horizontal line, and each block 501 and each limit block 601 are staggered.

[0046] In this embodiment, after the two hydraulic rods 13 drive the first bucket 5 and the second bucket 6 to fit together, each stop block 501 and each limit block 601 can be engaged with each other, so that the bottom of the connection position of the first bucket 5 and the second bucket 6 can be sealed, further preventing the soil from falling back into the foundation pit, thereby improving the effect of excavating the foundation pit.

[0047] The working principle of the foundation pit excavation device for building construction will be specifically described below.

[0048] like Figure 1-Figure 8As shown, the user moves the support frame 1 to the periphery of the position where the foundation pit needs to be excavated, and aligns the first bucket 5 and the second bucket 6 with the top of the excavation position, and fixes the support frame 1, and then uses the lifting component 2 to drive the adjustment frame 3 to move downward, so that the first bucket 5 and the second bucket 6 extend into the soil, and uses two hydraulic rods 13 to drive the first bucket 5 and the second bucket 6 to rotate, so as to excavate the soil, and make the first bucket 5 and the second bucket 6 fit each other, so that the soil can be wrapped inside the first bucket 5 and the second bucket 6, and the hydraulic rod 13 drives the second bucket 6 to rotate while driving the push plate 1501 to move to one side, squeezes the connecting block 701 downward, drives the baffle 7 to move downward, and blocks the position where the two ends of the first bucket 5 and the second bucket 6 are connected, so as to prevent the soil from leaking out through the two ends of the first bucket 5 and the second bucket 6, and each block 501 and each limit block 601 are mutually engaged, so that the first bucket The bottom of the connection position of the first bucket 5 and the second bucket 6 is sealed, and then the moving assembly 10 is used to move the first bucket 5 and the second bucket 6 to the other side, so that the first bucket 5 and the second bucket 6 leave the top of the foundation pit, so as to take out the excavated soil. The user can then use the two hydraulic rods 13 to drive the first bucket 5 and the second bucket 6 to rotate in the opposite direction, so that the first bucket 5 and the second bucket 6 are separated from each other, and most of the soil can automatically fall downward. The user can use the motor 1201 to drive the screw 12 to rotate, so that the two scrapers 8 move downward along the side walls of the first bucket 5 and the second bucket 6 respectively, and scrape off the soil adhered to the side walls of the first bucket 5 and the second bucket 6, and the second spring 903 can be used to drive the connecting plate 902 to shake, and the soil adhered to the bottom of the connecting plate 902 is shaken downward, so as to prevent the soil from adhering to the inner walls of the first bucket 5 and the second bucket 6 and causing the soil to fall back into the foundation pit again, thereby avoiding affecting the excavation effect of the foundation pit.

[0049] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A foundation pit excavation device for construction, comprising a support frame (1), a lifting assembly (2) and a moving assembly (10); characterized in that: The lifting component (2) is slidably connected to the inner side of the support frame (1); a moving component (10) is installed inside the support frame (1) at the rear end of the lifting component (2); the moving component (10) is rotatably connected to the lifting component (2); an adjusting frame (3) is fixedly connected to the bottom of the lifting component (2); a first bucket (5) is rotatably installed on one side of the adjusting frame (3); a second bucket (6) is rotatably connected to the other side of the adjusting frame (3); a pair of hydraulic rods (13) are symmetrically rotatably installed on both sides of the adjusting frame (3); the ends of the two hydraulic rods (13) are rotatably connected to the tops of the first bucket (5) and the second bucket (6), respectively; the interiors of the first bucket (5) and the second bucket (6) are both connected by shafts. A screw rod (12) is rotatably mounted on the bearing, and a motor (1201) is fixedly mounted on the top of the first bucket (5) and the second bucket (6) at the rear end of the hydraulic rod (13). The output shafts at the ends of the two motors (1201) are respectively fixedly connected to the two screw rods (12). Scrapers (8) are rotatably mounted on the peripheries of the two screw rods (12). The two scrapers (8) are respectively fitted with the inner walls of the first bucket (5) and the second bucket (6). Material shaking components (9) are arranged inside the two scrapers (8). The two material shaking components (9) are respectively used to shake the material on the top surfaces inside the first bucket (5) and the second bucket (6). A controller (4) is fixedly mounted on the front side of the support frame (1).

2. A foundation pit excavation device for construction according to claim 1, characterized in that: The shaking material component (9) includes a fixing plate (901) which is fixedly connected to the inner wall of the scraper (8); a connecting plate (902) is provided at the bottom of the fixing plate (901); a plurality of second springs (903) are fixedly installed at the bottom of the fixing plate (901); and the bottom of each second spring (903) is fixedly connected to the connecting plate (902).

3. A foundation pit excavation device for construction according to claim 2, characterized in that: A limiting plate (904) is fixedly installed on the top of the connecting plate (902) outside each of the second springs (903); a sliding groove matching the shape of the limiting plate (904) is provided inside the fixing plate (901); and the limiting plate (904) is slidably connected to the sliding groove.

4. A foundation pit excavation device for construction according to claim 1, characterized in that: A pair of baffles (7) are provided at both ends of the adjustment frame (3), and the two baffles (7) are respectively fitted with the outer walls of the first bucket (5) and the second bucket (6). A plurality of first springs (702) are fixedly installed on both sides of the adjustment frame (3) at the outer end of the hydraulic rod (13), and each of the first springs (702) is fixedly connected to the two baffles (7). A connecting block (701) is slidably installed inside the adjustment frame (3), and both ends of the connecting block (701) are fixedly connected to the two baffles (7). A pushing component (15) is provided on one side of the hydraulic rod (13) on the other side of the adjustment frame (3), and the pushing component (15) is used to push the connecting block (701).

5. A foundation pit excavation device for construction according to claim 4, characterized in that: The other side of the connection block (701) is a slope that tilts toward the top.

6. A foundation pit excavation device for construction according to claim 5, characterized in that: The pushing component (15) comprises a pushing plate (1501), and a surface on one side of the pushing plate (1501) and an inclined surface of the connecting block (701) are pressed against each other.

7. A foundation pit excavation device for construction according to claim 6, characterized in that: A fixed block (1502) is fixedly installed on the other side of the adjustment frame (3) at the top of the push plate (1501), and a third spring (1503) is fixedly connected to the bottom of the fixed block (1502). A pressure plate (1504) is fixedly installed at the bottom of the third spring (1503), and the bottom of the pressure plate (1504) is in contact with the top of the push plate (1501).

8. A foundation pit excavation device for construction according to claim 7, characterized in that: A plurality of stoppers (501) are fixedly installed at the bottom of the first bucket (5), and a plurality of limit blocks (601) are fixedly connected to the bottom of the second bucket (6). Each of the stoppers (501) and each of the limit blocks (601) are located on the same horizontal line, and each of the stoppers (501) and each of the limit blocks (601) are staggered.

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