An integrated device for foundation pit excavation and backfilling

Abstract

The application provides an integrated device for foundation pit excavation and backfilling, comprising a moving mechanism, a lifting mechanism, a backfilling mechanism and a digging mechanism. The lifting mechanism is installed on the moving mechanism. The backfilling mechanism is installed on the moving mechanism. The digging mechanism comprises a digging driving assembly, a hollow drill bit, a collecting assembly and a connecting assembly. The digging driving assembly is installed on the lifting mechanism. The hollow drill bit is installed on the lifting mechanism and rotates under the driving of the digging driving assembly. The collecting assembly is installed on the lifting mechanism and shields the hollow drill bit. The connecting assembly is installed between the hollow drill bit and the backfilling mechanism. The integrated device for foundation pit excavation and backfilling provided by the application can realize excavation, transportation and backfilling in the same device, improve work efficiency, save work space and has high automation degree.

Description

Technical Field

[0001] This application relates to the field of foundation pit excavation equipment, and in particular to an integrated device for foundation pit excavation and backfilling. Background Technology

[0002] As my country's urbanization process continues to accelerate, the construction of infrastructure such as high-rise buildings, underground transportation hubs, and integrated pipe corridors is developing in depth. The scale and number of foundation pit projects are constantly increasing, and their construction efficiency and safety are crucial to the cost, cycle, and environmental impact of the entire project.

[0003] Currently, traditional construction methods typically employ two separate sets of equipment and work teams: excavators, loaders, and other equipment are used for the excavation and transportation of excavated soil from the foundation pit, and concrete is then used for backfilling in the subsequent backfilling stage. This method occupies a large area of ​​site space, involves complex construction coordination, requires multiple pieces of equipment to work simultaneously or alternately, and necessitates a larger construction operation area and temporary soil storage area. Utility Model Content

[0004] The purpose of this application is to provide an integrated device for foundation pit excavation and backfilling, so as to solve the technical problems of existing excavation equipment occupying a large space and being difficult to use in combination.

[0005] To achieve the above objectives, the technical solution adopted in this application is: to provide an integrated device for foundation pit excavation and backfilling, comprising: Mobile mechanism; A lifting mechanism, which is mounted on the moving mechanism; A backfilling mechanism is installed on the moving mechanism; The excavation mechanism includes an excavation drive assembly, a hollow drill bit, a collection assembly, and a connecting assembly. The excavation drive assembly is mounted on the lifting mechanism, the hollow drill bit is mounted on the lifting mechanism and rotates under the drive of the excavation drive assembly, the collection assembly is mounted on the lifting mechanism and covers the hollow drill bit, and the connecting assembly is installed between the hollow drill bit and the backfilling mechanism.

[0006] Furthermore, the collection assembly includes a feed hopper, a spiral blade, and a transmission pipe. The feed hopper is installed on the lifting mechanism, the spiral blade is installed on the outer periphery of the hollow drill bit, and the transmission pipe is installed on the feed hopper and communicates with the feed hopper.

[0007] Furthermore, the collecting assembly also includes a conveyor belt, which is mounted on the lifting mechanism.

[0008] Furthermore, the excavation mechanism also includes a limit box and two opening valves. The limit box is installed inside the hollow drill bit, and the two opening valves are installed between the hollow drill bit and the limit box.

[0009] Furthermore, the opening valve includes an arc-shaped plate, a limiting rod, an elastic structure, and a limiting plate. The arc-shaped plate is slidably installed on the hollow drill bit. The limiting rod is installed on the arc-shaped plate and passes through the limiting box. The elastic structure is sleeved on the limiting rod and installed between the arc-shaped plate and the limiting box. The limiting plate is installed at the end of the limiting rod away from the arc-shaped plate.

[0010] Furthermore, the connecting assembly includes a dynamic sealing structure and a connecting pipe. The dynamic sealing structure is installed at one end of the hollow drill bit near the digging drive assembly, and the connecting pipe connects the dynamic sealing structure and the backfilling mechanism.

[0011] Furthermore, the backfilling mechanism includes a storage tank, a backfilling pipe, and a backfilling pump. The storage tank and the backfilling pump are both installed on the moving mechanism. The backfilling pipe is installed between the storage tank and the backfilling pump. The end of the connecting pipe away from the dynamic sealing structure is connected to the backfilling pump.

[0012] Furthermore, the lifting mechanism includes a lifting bracket, two screws, a movable plate, and a lifting drive assembly. The lifting bracket is installed on the movable mechanism, the two screws pass through the lifting bracket, the movable plate is installed on the two screws and screwed to the movable plate, and the lifting drive assembly is installed on the lifting bracket and is used to drive the two screws to rotate.

[0013] Furthermore, the lifting drive assembly includes a lifting driver and two lifting gear sets. The lifting driver is mounted on the lifting bracket, and the two lifting gear sets are mounted on the ends of the two screws away from the moving mechanism. Under the drive of the lifting driver, the two screws are rotated, and they are arranged in a one-to-one correspondence with the two screws.

[0014] Furthermore, the digging drive assembly includes a digging driver, a first gear, a second gear, and a chain. The digging driver is mounted on the lifting mechanism, the first gear is mounted on the output end of the digging driver, the second gear is mounted on the end of the hollow drill bit away from the moving mechanism, and the chain is sleeved on the outer periphery of the first gear and the second gear and meshes with the first gear and the second gear. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A first-view perspective perspective view of an integrated device for foundation pit excavation and backfilling provided in this application; Figure 2 A second-view perspective perspective view of an integrated device for foundation pit excavation and backfilling provided in this application; Figure 3 A perspective view of the lifting mechanism, excavation mechanism, and moving mechanism of an integrated equipment for foundation pit excavation and backfilling provided in this application; Figure 4 A three-dimensional sectional view of the lifting mechanism, excavation mechanism, and moving mechanism of an integrated equipment for foundation pit excavation and backfilling provided in this application; Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0017] The following are the labeling elements in the figure: 1. Moving mechanism; 2. Lifting mechanism; 21. Lifting bracket; 22. Screw; 23. Moving plate; 24. Lifting drive assembly; 241. Lifting driver; 242. Lifting gear set; 2421. Worm gear; 2422. Worm wheel; 3. Backfilling mechanism; 31. Storage tank; 32. Backfilling pipeline; 33. Backfilling pump; 4. Excavating mechanism; 41. Excavating drive assembly; 411. Excavating driver; 412. First gear; 413. Second gear; 414. Chain; 42. Hollow drill bit; 43. Collection assembly; 431. Feed hopper; 432. Spiral blade; 433. Transmission pipe; 434. Conveyor belt; 44. Connecting assembly; 441. Dynamic sealing structure; 442. Connecting pipe; 45. Limiting box; 46. Opening valve; 461. Arc plate; 462. Limiting rod; 463. Elastic structure; 464. Limiting plate. Detailed Implementation

[0018] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0019] It should be noted that when a component is referred to as being "mounted to," "fixed to," or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0020] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] like Figures 1 to 5 As shown, this application provides an integrated device for foundation pit excavation and backfilling, comprising a moving mechanism 1, a lifting mechanism 2, a backfilling mechanism 3, and an excavating mechanism 4. The lifting mechanism 2 is mounted on the moving mechanism 1. The backfilling mechanism 3 is mounted on the moving mechanism 1. The excavating mechanism 4 includes an excavation drive assembly 41, a hollow drill bit 42, a collection assembly 43, and a connecting assembly 44. The excavation drive assembly 41 is mounted on the lifting mechanism 2. The hollow drill bit 42 is mounted on the lifting mechanism 2 and rotates under the drive of the excavation drive assembly 41. The collection assembly 43 is mounted on the lifting mechanism 2 and conceals the hollow drill bit 42. The connecting assembly 44 is installed between the hollow drill bit 42 and the backfilling mechanism 3.

[0023] This application provides an integrated device for foundation pit excavation and backfilling. The moving mechanism 1 allows the device to excavate at any location, facilitating subsequent transportation and backfilling. The lifting mechanism 2 adjusts the height of the excavating mechanism 4, thereby adjusting the excavation depth. The excavation drive assembly 41 and the hollow drill bit 42 work together to excavate the foundation pit, preparing for subsequent backfilling. The collection assembly 43 collects the soil generated during excavation, preventing soil from obstructing the excavation process. The connecting assembly 44 and the hollow drill bit 42 work together to backfill the excavated pit with concrete. Furthermore, the connecting assembly 44 allows for direct backfilling after excavation without needing to replace other equipment, improving construction efficiency and saving time. Compared to existing technologies, this device combines multiple mechanisms such as the moving mechanism 1, lifting mechanism 2, backfilling mechanism 3, and excavating mechanism 4, resulting in a smaller footprint, higher automation, and avoiding the use of multiple large pieces of equipment. Integrating multiple functions into one system improves construction efficiency.

[0024] In one embodiment of this application, please refer to Figures 1 to 5 The collecting component 43 includes a feeding hopper 431, a spiral blade 432, and a transmission pipe 433. The feeding hopper 431 is installed on the lifting mechanism 2, the spiral blade 432 is installed on the outer periphery of the hollow drill bit 42, and the transmission pipe 433 is installed on the feeding hopper 431 and connected to the feeding hopper 431.

[0025] This configuration, with the combined action of the feed hopper 431 and the spiral blades 432, allows for the recovery of excavated soil, preventing soil accumulation from affecting excavation efficiency. The collected soil is then transported out of the feed hopper 431 via the transmission pipe 433.

[0026] In one embodiment of this application, please refer to Figures 1 to 5 The collecting component 43 also includes a conveyor belt 434, which is mounted on the lifting mechanism 2.

[0027] With this configuration, the conveyor belt 434 can receive the earthwork transported from the transmission pipeline 433 and smoothly transfer the earthwork to external storage equipment or transport vehicles, realizing long-distance earthwork transportation, reducing manual handling operations, and improving the degree of construction automation.

[0028] In one embodiment of this application, please refer to Figures 1 to 5 The excavation mechanism 4 also includes a limit box 45 and two opening valves 46. The limit box 45 is installed inside the hollow drill bit 42, and the two opening valves 46 are installed between the hollow drill bit 42 and the limit box 45.

[0029] This configuration allows concrete to flow out of the hollow drill bit 42 during backfilling, thanks to the action of the opening valve 46. The limit box 45 limits the opening valve 46, preventing soil from entering the hollow drill bit 42 and causing blockages during excavation, thus ensuring the concrete can flow out.

[0030] In one embodiment of this application, please refer to Figures 1 to 5 The opening valve 46 includes an arc-shaped plate 461, a limiting rod 462, an elastic structure 463, and a limiting plate 464. The arc-shaped plate 461 is slidably installed on the hollow drill bit 42. The limiting rod 462 is installed on the arc-shaped plate 461 and passes through the limiting box 45. The elastic structure 463 is sleeved on the limiting rod 462 and installed between the arc-shaped plate 461 and the limiting box 45. The limiting plate 464 is installed at the end of the limiting rod 462 away from the arc-shaped plate 461.

[0031] This configuration, with the combined action of the arc-shaped plate 461, the limiting rod 462, and the elastic structure 463, prevents soil from entering the hollow drill bit 42 during excavation and allows concrete to enter the foundation pit during backfilling. Furthermore, the elastic structure 463's tension setting allows the arc-shaped plate 461 to automatically return to its original position after backfilling, preventing debris from entering the hollow drill bit 42 and causing blockage. The limiting plate 464 prevents the limiting rod 462 from moving out of the limiting box 45 and damaging the opening valve 46. The combined action of the two limiting plates 464 achieves mutual restraint, preventing excessive movement of the two arc-shaped plates 461 during drilling that could open the hollow drill bit 42, thus effectively preventing soil from entering the hollow drill bit 42.

[0032] Optionally, the elastic structure 463 is configured as a spring or a sheet.

[0033] In one embodiment of this application, please refer to Figures 1 to 5 The connecting component 44 includes a dynamic sealing structure 441 and a connecting pipe 442. The dynamic sealing structure 441 is installed at one end of the hollow drill bit 42 near the digging drive component 41, and the connecting pipe 442 is connected between the dynamic sealing structure 441 and the backfilling mechanism 3.

[0034] With this configuration, the connecting pipe 442 can stably deliver concrete into the hollow drill bit 42. The dynamic sealing structure 441 ensures good sealing performance when the hollow drill bit 42 rotates, and also prevents interference caused by the connecting pipe 442 rotating during the rotation of the hollow drill bit 42.

[0035] In one embodiment of this application, please refer to Figures 1 to 5The backfilling mechanism 3 includes a storage tank 31, a backfilling pipe 32, and a backfilling pump 33. The storage tank 31 and the backfilling pump 33 are both installed on the moving mechanism 1. The backfilling pipe 32 is installed between the storage tank 31 and the backfilling pump 33. The end of the connecting pipe 442 away from the dynamic sealing structure 441 is connected to the backfilling pump 33.

[0036] With this configuration, the concrete can be pumped into the hollow drill bit 42 through the combined action of the storage tank 31, backfill pipe 32, and backfill pump 33, thereby improving construction efficiency.

[0037] In one embodiment of this application, please refer to Figures 1 to 5 The lifting mechanism 2 includes a lifting bracket 21, two screws 22, a movable plate 23, and a lifting drive assembly 24. The lifting bracket 21 is installed on the movable mechanism 1. The two screws 22 pass through the lifting bracket 21. The movable plate 23 is installed on the two screws 22 and screwed to the movable plate 23. The lifting drive assembly 24 is installed on the lifting bracket 21 and is used to drive the two screws 22 to rotate.

[0038] With this configuration, the lifting bracket 21, screw 22, moving plate 23 and lifting drive assembly 24 work together to drive the moving plate 23 to move up and down precisely through the rotation of screw 22, thereby controlling the working depth of the excavation mechanism 4, adapting to the requirements of foundation pit operations at different depths and ensuring excavation accuracy.

[0039] In one embodiment of this application, please refer to Figures 1 to 5 The lifting drive assembly 24 includes a lifting driver 241 and two lifting gear sets 242. The lifting driver 241 is mounted on the lifting bracket 21, and the two lifting gear sets 242 are mounted on the ends of the two screws 22 away from the moving mechanism 1. Driven by the lifting driver 241, the two screws 22 rotate, and the gear sets 242 are arranged in a one-to-one correspondence with the two screws 22. The lifting gear set 242 includes a worm 2421 and a worm wheel 2422. The worm 2421 is mounted on the output end of the lifting driver 241, and the worm wheel 2422 is mounted on the end of the screw 22 away from the moving mechanism 1 and meshes with the worm 2421.

[0040] With this configuration, the moving plate 23 can be raised and lowered smoothly under the combined action of the lifting drive 241, worm gear 2422 and worm 2421, avoiding jamming and improving the stability and reliability of equipment operation.

[0041] Optionally, the lifting drive 241 is configured as a dual-axis motor.

[0042] In one embodiment of this application, please refer to Figures 1 to 5The excavation drive assembly 41 includes an excavation driver 411, a first gear 412, a second gear 413, and a chain 414. The excavation driver 411 is mounted on the lifting mechanism 2. The first gear 412 is mounted on the output end of the excavation driver 411. The second gear 413 is mounted on the end of the hollow drill bit 42 away from the moving mechanism 1. The chain 414 is sleeved on the outer periphery of the first gear 412 and the second gear 413 and meshes with the first gear 412 and the second gear 413.

[0043] With this configuration, the power generated by the excavator driver 411 can be transmitted to the hollow drill bit 42 through gear transmission and chain 414 under the combined action of the excavator driver 411, the first gear 412, the second gear 413 and the chain 414, driving it to rotate at high speed for excavation, which can make the excavation operation stable and reliable.

[0044] Alternatively, the excavator drive 411 may be configured as a rotary motor.

[0045] The working principle of the integrated equipment for foundation pit excavation and backfilling provided in this application is as follows: When foundation pit excavation is required, the moving mechanism 1 first accurately positions the equipment to the working position. The lifting mechanism 2 starts working, and the lifting drive 241 drives two screws 22 to rotate synchronously through two lifting gear sets 242, driving the moving plate 23 and the digging mechanism 4 to descend to the predetermined depth. The digging drive assembly 41 starts working, and the digging drive 411 drives the hollow drill bit 42 to rotate and cut into the soil layer for digging operations through the transmission of the first gear 412, chain 414 and second gear 413. During the digging process, the opening valve 46 remains closed, and the arc plate 461 is tightly attached to the outer wall of the hollow drill bit 42 under the action of the elastic structure 463 and the limiting rod 462. The elastic structure 463 is set to a stretched state to effectively prevent soil from entering the interior of the hollow drill bit 42 during digging. The spiral blade 432 rotates synchronously with the hollow drill bit 42, transporting the excavated soil upward along the outer periphery of the hollow drill bit 42. The excavated soil enters the transmission pipeline 433 through the feed bucket 431 and is then transported to the transport vehicle via the conveyor belt 434, achieving automatic loading and transportation of the excavated soil. During backfilling, concrete is pumped from the backfill pump 33 through the connecting pipeline 442 and enters the hollow drill bit 42 through the dynamic sealing structure 441. The concrete is compressed by the arc plate 461, which in turn drives the limit rod 462 and the elastic structure 463 to move, allowing the concrete to be injected into the bottom of the pit through the formed channel, achieving precise backfilling. During backfilling, the dynamic sealing structure 441 ensures the sealing performance of the hollow drill bit 42 during rotation, preventing concrete leakage. Simultaneously, the storage bucket 31 in the backfilling mechanism 3 can temporarily store concrete, and the backfill pump 33 pumps the concrete to the connecting pipeline 442 through the backfill pipeline 32. The lifting mechanism 2 can precisely control the backfilling depth, ensuring that the concrete is filled to the designated position. After backfilling is completed, all components are reset, and the equipment is transferred to the next work point via the moving mechanism 1.

[0046] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. An integrated device for foundation pit excavation and backfilling, characterized in that, include: Mobile mechanism (1); Lifting mechanism (2), which is installed on the moving mechanism (1); Backfilling mechanism (3), which is installed on the moving mechanism (1); The excavation mechanism (4) includes an excavation drive assembly (41), a hollow drill bit (42), a collection assembly (43), and a connecting assembly (44). The excavation drive assembly (41) is installed on the lifting mechanism (2). The hollow drill bit (42) is installed on the lifting mechanism (2) and rotates under the drive of the excavation drive assembly (41). The collection assembly (43) is installed on the lifting mechanism (2) and covers the hollow drill bit (42). The connecting assembly (44) is installed between the hollow drill bit (42) and the backfilling mechanism (3).

2. The integrated equipment for foundation pit excavation and backfilling as described in claim 1, characterized in that, The collecting component (43) includes a feed hopper (431), a spiral blade (432), and a transmission pipe (433). The feed hopper (431) is installed on the lifting mechanism (2), the spiral blade (432) is installed on the outer periphery of the hollow drill bit (42), and the transmission pipe (433) is installed on the feed hopper (431) and communicates with the feed hopper (431).

3. The integrated equipment for foundation pit excavation and backfilling as described in claim 2, characterized in that, The collecting component (43) also includes a conveyor belt (434) which is mounted on the lifting mechanism (2).

4. The integrated equipment for foundation pit excavation and backfilling as described in claim 1, characterized in that, The excavation mechanism (4) also includes a limit box (45) and two opening valves (46). The limit box (45) is installed inside the hollow drill bit (42), and the two opening valves (46) are installed between the hollow drill bit (42) and the limit box (45).

5. The integrated equipment for foundation pit excavation and backfilling as described in claim 4, characterized in that, The opening valve (46) includes an arc-shaped plate (461), a limiting rod (462), an elastic structure (463), and a limiting plate (464). The arc-shaped plate (461) is slidably installed on the hollow drill bit (42). The limiting rod (462) is installed on the arc-shaped plate (461) and passes through the limiting box (45). The elastic structure (463) is sleeved on the limiting rod (462) and installed between the arc-shaped plate (461) and the limiting box (45). The limiting plate (464) is installed at the end of the limiting rod (462) away from the arc-shaped plate (461).

6. The integrated equipment for foundation pit excavation and backfilling as described in claim 1, characterized in that, The connecting assembly (44) includes a dynamic sealing structure (441) and a connecting pipe (442). The dynamic sealing structure (441) is installed at one end of the hollow drill bit (42) near the digging drive assembly (41), and the connecting pipe (442) is connected between the dynamic sealing structure (441) and the backfilling mechanism (3).

7. The integrated equipment for foundation pit excavation and backfilling as described in claim 6, characterized in that, The backfilling mechanism (3) includes a storage tank (31), a backfilling pipe (32), and a backfilling pump (33). The storage tank (31) and the backfilling pump (33) are both installed on the moving mechanism (1). The backfilling pipe (32) is installed between the storage tank (31) and the backfilling pump (33). The end of the connecting pipe (442) away from the dynamic sealing structure (441) is connected to the backfilling pump (33).

8. The integrated equipment for foundation pit excavation and backfilling as described in claim 1, characterized in that, The lifting mechanism (2) includes a lifting bracket (21), two screws (22), a moving plate (23), and a lifting drive assembly (24). The lifting bracket (21) is installed on the moving mechanism (1), the two screws (22) pass through the lifting bracket (21), the moving plate (23) is installed on the two screws (22) and screwed to the moving plate (23), and the lifting drive assembly (24) is installed on the lifting bracket (21) and is used to drive the two screws (22) to rotate.

9. The integrated equipment for foundation pit excavation and backfilling as described in claim 8, characterized in that, The lifting drive assembly (24) includes a lifting driver (241) and two lifting gear sets (242). The lifting driver (241) is mounted on the lifting bracket (21). The two lifting gear sets (242) are mounted on the ends of the two screws (22) away from the moving mechanism (1) and drive the two screws (22) to rotate under the drive of the lifting driver (241). They are arranged in a one-to-one correspondence with the two screws (22).

10. The integrated equipment for foundation pit excavation and backfilling as described in claim 1, characterized in that, The excavation drive assembly (41) includes an excavation driver (411), a first gear (412), a second gear (413), and a chain (414). The excavation driver (411) is mounted on the lifting mechanism (2). The first gear (412) is mounted on the output end of the excavation driver (411). The second gear (413) is mounted on the end of the hollow drill bit (42) away from the moving mechanism (1). The chain (414) is sleeved on the outer periphery of the first gear (412) and the second gear (413) and meshes with the first gear (412) and the second gear (413).

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