Vertical excavation equipment for foundation pit

Abstract

The invention relates to the technical field of foundation pit construction equipment, solves the problem that in the prior art, the operation efficiency is low, and discloses foundation pit vertical excavation equipment which comprises a frame, a lifting arm, a lifting rope, a grab bucket and an auxiliary stabilizing frame. The frame is provided with a track structure, a steering structure, an operation room and a power supply module; the grab bucket is electrically connected with the power module; the cargo boom is rotationally connected with the frame; the frame is provided with a first driving piece; a reversing roller is arranged at the end part of the cargo boom; a second driving assembly is arranged on the frame; the auxiliary stabilizing frame comprises a basic arc frame and a moving arc frame; the basic arc frame is provided with a connecting rod which is rotationally connected with the cargo boom; a third driving assembly is arranged on the cargo boom; the moving arc frame is slidably connected with the basic arc frame; the auxiliary stabilizing frame is provided with a fourth driving assembly; the grab bucket is provided with a butt joint column, and the butt joint column can penetrate into the auxiliary stabilizing frame. When the frame rotates, the grab bucket can stably move, and shaking of the grab bucket is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of foundation pit construction equipment, and in particular to a foundation pit vertical excavation equipment. Background Art

[0002] Deep foundation pit refers to an excavation depth of more than 5 meters, sometimes even reaching tens of meters. Deep foundation pit engineering is a general term for foundation pit earthwork excavation, support, and dewatering engineering. It is highly comprehensive and requires close cooperation between geotechnical engineering and structural engineering technicians. Deep foundation pit projects are often located in urban centers or busy areas, surrounded by dense buildings and complex underground pipelines. Due to the large excavation depth, complex geological conditions and complex surrounding environment, deep foundation pit projects have high safety risks and must take strict support and dewatering measures. Foundation pit excavation construction must follow the principle of "grooving support, support first and then excavation, layered excavation, and over-excavation is strictly prohibited."

[0003] In the prior art, the soil is loosened by an excavator at the bottom of the pit, and the soil is transferred and stacked to form a soil pile. A lifting device is set on the surface to transfer the soil pile out of the foundation pit. Among them, the lifting device uses a lotus-shaped grab bucket as a picking device. The lifting device generally has two structures: first, the grab bucket is suspended by a steel cable to realize the transfer of the soil pile. Second, the movement of the grab bucket is controlled by an extended arm.

[0004] Regarding the above-mentioned related technologies, the extended arm equipment is expensive and has high maintenance costs. When the grab bucket is lifted to the ground by steel cable suspension, it needs to move slowly to prevent the grab bucket from shaking or even swinging. The operation efficiency is low. Summary of the invention

[0005] In order to improve the problem of low operating efficiency in the prior art, the present application provides a foundation pit vertical excavation equipment.

[0006] The following technical solutions are adopted: A vertical excavation equipment for foundation pits, comprising a frame, a lifting arm, a lifting rope, a grab bucket and an auxiliary stabilizing frame; a crawler structure is arranged at the bottom of the frame, and a steering structure is arranged between the crawler structure and the frame; an operating room is arranged on the frame; a power supply module is arranged on the frame, and the grab bucket is connected to the power supply module through a cable; one end of the lifting arm is rotatably connected to the surface of the frame, and the other end extends outward; a first driving member for driving the lifting arm to rotate is arranged on the frame; a reversing roller is arranged at the end of the lifting arm; one end of the lifting rope and the cable is connected to the grab bucket, and the other end passes around the reversing roller and extends to the frame above the lifting arm; a reversing roller is arranged on the frame a second driving assembly for winding or releasing the lifting rope; the auxiliary stabilizing frame comprises a basic arc frame and a moving arc frame; the basic arc frame is provided with a connecting rod, one end of which is rotatably connected to the lifting arm, and the connecting rod can be rotated to a horizontal position; the lifting arm is provided with a third driving assembly for driving the connecting rod to rotate; the moving arc frame is concentrically slidably connected to the basic arc frame; the auxiliary stabilizing frame is provided with a fourth driving assembly for driving the moving arc frame to move; the auxiliary stabilizing frame can make the lifting rope located in the frame after the connecting rod moves; a docking column is provided at one end of the grab bucket, and the docking column can be coaxially inserted into the auxiliary stabilizing frame, and the diameter of the docking column corresponds to the inner diameter of the auxiliary stabilizing frame.

[0007] By adopting the above technical solution, the grab can move stably when the frame rotates, reducing the shaking of the grab, improving the efficiency and safety of vertical excavation of the foundation pit, and the equipment is flexible in movement and steering, easy to operate, and the grab can be lifted and lowered stably and reliably, thereby enhancing the stability of the overall structure.

[0008] Optionally, at least two lifting cables are arranged in parallel; the cable is located between the lifting cables; a plurality of tensioning rollers are rotatably connected to the lifting arm; the lifting cables and the cable are wound around the reversing roller after passing around the tensioning roller.

[0009] By adopting the above technical solution, the entanglement and wear of the lifting ropes and cables are avoided, the service life is increased, and at the same time the stability and safety of the grab bucket during lifting and lowering are ensured.

[0010] Optionally, the reversing roller and the plurality of tensioning rollers are provided with a plurality of wire grooves spaced circumferentially, and the lifting rope and the cable are clamped in the corresponding wire grooves.

[0011] By adopting the above technical solution, the friction and wear of the lifting ropes and cables are further reduced, and the accuracy and stability of the guidance are improved.

[0012] Optionally, a cluster tube is provided at one end of the boom close to the frame, and three through holes are opened on the cluster tube; the cluster tube is arranged along the length direction of the boom, the cable passes through the cluster tube and is connected to the power module, and the lifting rope passes through the cluster tube and is connected to the second drive assembly.

[0013] By adopting the above technical solution, the cluster tube effectively organizes and protects the cables and lifting ropes, avoids confusion and mutual interference between them, and improves the neatness and safety of the equipment.

[0014] Optionally, the first driving member is a hydraulic telescopic rod; the first driving member is arranged on the side of the lifting arm; one end of the first driving member is rotatably connected to the lifting arm, and the other end is rotatably connected to the frame.

[0015] By adopting the above technical solution, the hydraulic telescopic rod has a strong driving force and stable control performance, ensuring the accuracy and reliability of the rotation of the crane arm.

[0016] Optionally, the second driving assembly includes a retractable roller, a second driving member and a bracket; the bracket is connected to the frame, and the retractable roller is rotatably connected to the bracket; the second driving member is connected to the bracket to drive the retractable roller to rotate; the lifting rope is reeled on the retractable roller.

[0017] By adopting the above technical solution, the second drive assembly has a compact structure and clear functions, and can effectively control the winding and releasing of the lifting rope, thereby improving the efficiency and stability of the grab bucket lifting.

[0018] Optionally, the third driving assembly includes a worm wheel, a worm and a third driving member; the worm wheel is coaxially connected to the rotating end of the connecting rod; the worm is arranged in the boom along the length direction of the boom, and the third driving member is arranged in the boom to drive the worm to rotate; the worm wheel penetrates into the boom and engages with the worm.

[0019] By adopting the above technical solution, the worm gear transmission has a self-locking property, which can effectively prevent the connecting rod from rotating on its own when not affected by external force, thereby improving the stability of the auxiliary stabilizing frame.

[0020] Optionally, the fourth driving assembly includes a fourth driving member and a driving gear; a sliding groove is concentrically provided on the inner wall of the basic arc frame; a convex arc bar capable of sliding in the sliding groove is provided on the moving arc frame; a mounting groove for the driving gear to rotate is provided in the basic arc frame; the mounting groove is connected to the sliding groove; teeth are provided on the outer wall of the convex arc bar, and the teeth are meshed with the driving gear; the fourth driving member drives the driving gear to rotate.

[0021] By adopting the above technical solution, the fourth driving component has a simple structure and high transmission efficiency, and can effectively control the sliding of the moving arc frame, thereby enhancing the adaptability and stability of the auxiliary stabilizing frame.

[0022] Optionally, the outer edge of the docking column is circumferentially chamfered, and the inner wall of the bottom of the motion arc frame is provided with an oblique angle; a groove is coaxially provided in the middle of the docking column; a connecting head is provided at the bottom of the groove; and the lifting cable is connected to the connecting head.

[0023] By adopting the above technical solution, the structural design of the docking column and the moving arc frame is reasonable, which facilitates the quick connection and disconnection of the grab bucket and the auxiliary stabilizing frame, and improves the operating efficiency and flexibility of the equipment.

[0024] Optionally, the grab bucket includes a plurality of earth shovels, a base and a fifth drive assembly; the plurality of earth shovels are circumferentially connected to the base; the earth shovels are rotatably connected to the base via a support arm; the fifth drive assembly includes a fluid supply cylinder, an electronic control module and a plurality of telescopic hydraulic rods; the fluid supply cylinder and the electronic control module are arranged in the base; the cable passes through the outer wall of the base to connect to the electronic control module; one end of the telescopic hydraulic rod is rotatably connected to the base, and the other end is rotatably connected to the corresponding middle part of the support arm; the telescopic hydraulic rod is connected to the fluid supply cylinder via a fluid inlet pipe and a fluid outlet pipe.

[0025] By adopting the above technical solution, the grab bucket structure is reasonably designed, the action of grabbing and releasing soil is stable and reliable, and the efficiency and quality of vertical excavation of foundation pit are improved.

[0026] In summary, the present application includes at least one of the following beneficial effects: 1. Improved the efficiency and safety of vertical excavation of foundation pits: By optimizing the structure and transmission mode of the equipment, the stability and reliability of the equipment's movement, steering, lifting and other functions are improved, thereby improving the efficiency and safety of vertical excavation of foundation pits.

[0027] 2. Enhanced stability and adaptability of the equipment: The overall stability of the equipment is enhanced through the design of auxiliary stabilizing frames and connecting rods; at the same time, the adaptability of the equipment to different working conditions is improved through the flexible control of each drive component.

[0028] 3. Improved the operation convenience and maintainability of the equipment: Through reasonable structural design and modular layout, the operation process and maintenance steps of the equipment are simplified, and the operation convenience and maintainability of the equipment are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure during construction of this embodiment; Figure 2 It is a schematic diagram of the overall structure of this embodiment; Figure 3 yes Figure 2 Side view of the structure (partial section view); Figure 4 yes Figure 3 A schematic diagram of the enlarged structure at point A; Figure 5 yes Figure 3 A schematic diagram of the enlarged structure at B; Figure 6 This is a schematic diagram of the coordination between the auxiliary stabilizing frame and the grab bucket; Figure 7 is a schematic diagram of the cross-sectional structure of the auxiliary stabilizing frame viewed from above; Figure 8 It is a schematic diagram of the cross-sectional structure of the grab bucket.

[0030] Description of reference numerals: 11, frame; 12, crawler structure; 13, steering structure; 14, operating room; 15, power module; 16, first drive member; 2, lifting arm; 21, reversing roller; 22, tensioning roller; 221, wire trough; 23, cluster tube; 24, connecting piece; 31, lifting rope; 32, cable; 4, grab; 41, base; 42, docking column; 421, chamfer; 422, groove; 423, connector; 43, earth shovel; 431, support arm; 44, fifth drive assembly; 441, liquid supply cylinder; 442, Electronic control module; 443, telescopic hydraulic rod; 5, auxiliary stabilizing frame; 51, basic arc frame; 511, slide groove; 512, mounting groove; 513, baffle; 52, moving arc frame; 521, convex arc strip; 522, teeth; 523, bevel; 53, connecting rod; 531, rotating shaft; 6, second drive assembly; 61, retractable roller; 62, second drive member; 63, bracket; 7, third drive assembly; 71, worm gear; 72, worm; 73, third drive member; 8, fourth drive assembly; 81, fourth drive member; 82, drive gear. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1 To Attachment Figure 8 This application is described in further detail.

[0032] In order to solve the following problems in the prior art: 1. The extended arm excavation equipment is expensive and has high maintenance costs. 2. The cable hanging excavation equipment needs to move slowly when the grab bucket is lifted to the ground to prevent the grab bucket from shaking or even swinging, resulting in low operating efficiency.

[0033] The embodiment of the present application discloses a vertical excavation equipment for foundation pit, including a frame 11, a boom 2, a hoisting rope 31, a grab 4 and an auxiliary stabilizing frame 5. A crawler structure 12 is arranged at the bottom of the frame 11, and the crawler structure 12 belongs to the prior art and will not be described in detail here. A steering structure 13 for driving the frame 11 to rotate relative to the crawler structure 12 is arranged between the crawler structure 12 and the frame 11. The steering structure 13 belongs to the prior art and will not be described in detail here. An operating room 14 for operators to control the excavation equipment is arranged on the upper surface of the frame 11. A power module 15 is arranged on the frame 11, and the grab 4 is connected to the power module 15 through a cable 32. One end of the boom 2 is rotatably connected to the upper surface of the frame 11, and the other end extends outward. A first driving member 16 for driving the boom 2 to rotate is arranged on the frame 11. The end of the boom 2 away from the frame 11 is rotatably connected to a reversing roller 21. One end of the lifting rope 31 and the cable 32 is connected to the grab bucket 4, and the other end extends vertically upward, bypasses the reversing roller 21, and then extends to the top of the boom 2 along the length direction of the boom 2 to the frame 11. The frame 11 is provided with a second driving assembly 6 for winding or releasing the lifting rope 31. The auxiliary stabilizing frame 5 includes a basic arc frame 51 and a moving arc frame 52. The basic arc frame 51 is provided with a connecting rod 53, which is arranged parallel to the bottom of the boom 2. One end of the connecting rod 53 is rotatably connected to the boom 2 through an adapter frame, and the connecting rod 53 can be rotated to be perpendicular to the boom 2, or rotated to be parallel to the ground. The boom 2 is provided with a third driving assembly 7 for driving the connecting rod 53 to rotate. The basic arc frame 51 and the moving arc frame 52 are concentric arcs. The moving arc frame 52 is slidably connected to the inner side of the basic arc frame 51. The auxiliary stabilizing frame 5 can move with the connecting rod 53 so that the lifting rope 31 is located in the frame. Initially, the moving arc frame 52 is located in the basic arc frame 51, and there is a gap in the basic arc frame 51, which allows the lifting rope 31 and the cable 32 to enter the arc space of the basic arc frame 51 and the moving arc frame 52. At this time, the connecting rod 53 is in a state parallel to the boom 2. The connecting rod 53 can be rotated to a horizontal state. When the connecting rod 53 is rotated to a horizontal state (i.e. parallel to the ground), the lifting rope 31 and the cable 32 enter the basic arc frame 51 and the moving arc frame 52. The moving arc frame 52 can slide and form a circular closed structure with the basic arc frame 51, thereby surrounding the lifting rope 31 and the cable 32. The basic arc frame 51 is provided with a fourth driving assembly 8 that drives the moving arc frame 52 to move. A docking column 42 is provided at one end of the grab 4. The docking column 42 can coaxially penetrate into the auxiliary stabilizing frame 5 (i.e., the circular structure enclosed by the basic arc frame 51 and the moving arc frame 52), and the diameter of the docking column 42 corresponds to the inner diameter of the auxiliary stabilizing frame 5. Through the cooperation of the docking column 42 and the auxiliary stabilizing frame 5, the grab bucket 4 can move stably when the frame 11 rotates, reducing the shaking of the grab bucket 4, so that it can rotate quickly, speed up the working efficiency, and ensure the safety during operation, and prevent the grab bucket 4 from swinging.

[0034] Furthermore, in order to increase the stability of the grab 4 during lifting, the lifting cable 31 is prevented from being entangled or rotating. Several lifting cables 31 are provided, and at least two are provided. Taking two as an example, the two lifting cables 31 are arranged in parallel, the cable 32 is located between the two lifting cables 31, and the cable 32 is arranged in parallel with the lifting cables 31 at intervals. A plurality of tensioning rollers 22 are connected to the top of the boom 2 in an interval, and the rotation axis of the tensioning roller 22 is perpendicular to the length direction of the boom 2. The lifting cable 31 is S-shaped and passes through a plurality of tensioning rollers 22 in sequence, and then is wound around the reversing roller 21, and is reversed vertically downward in the direction of gravity. Two lifting cables 31 are arranged in parallel, and the cable 32 is located between the lifting cables 31. The cables 32 are guided by a plurality of tensioning rollers 22 and the reversing roller 21 to ensure that the lifting cables 31 and the cables 32 are arranged neatly and have uniform tension. The entanglement and wear of the lifting cables 31 and the cables 32 are avoided, the service life is improved, and the stability and safety of the lifting and lowering process of the grab 4 are ensured.

[0035] Furthermore, a plurality of wire grooves 221 are provided at intervals on the outer walls of the reversing roller 21 and the plurality of tensioning rollers 22. The wire grooves 221 are opened along the axial direction of the outer wall of the reversing roller 21 or the tensioning roller 22. The hoisting rope 31 and the cable 32 are clamped in the corresponding wire grooves 221. The reversing roller 21 and the plurality of tensioning rollers 22 are provided with wire grooves 221, and the hoisting rope 31 and the cable 32 are clamped in the corresponding wire grooves 221, ensuring that they are guided along a predetermined path. The friction and wear of the hoisting rope 31 and the cable 32 are further reduced, the accuracy and stability of the guidance are improved, and the service life is extended.

[0036] Furthermore, a cluster tube 23 is provided at one end of the boom 2 close to the vehicle frame 11, and three through holes are provided on the cluster tube 23. The cluster tube 23 is provided along the length direction of the boom 2, and the cable 32 passes through the cluster tube 23 and is connected to the power module 15, and the hoisting cable 31 passes through the cluster tube 23 and is connected to the second drive assembly 6. A cluster tube 23 is provided at one end of the boom 2 close to the vehicle frame 11, and three through holes are provided on the cluster tube 23, and the cable 32 and the hoisting cable 31 pass through the cluster tube 23 and are connected to the power module 15 and the second drive assembly 6 respectively. The cluster tube 23 effectively organizes and protects the cable 32 and the hoisting cable 31, avoids confusion and mutual interference between them, and improves the neatness and safety of the equipment.

[0037] Furthermore, the first driving member 16 is a hydraulic telescopic rod, which is arranged on the side of the boom 2, one end of which is rotatably connected to the boom 2, and the other end of which is rotatably connected to the frame 11, so as to realize the rotation of the boom 2 by telescoping. The hydraulic telescopic rod has a strong driving force and stable control performance, which ensures the accuracy and reliability of the rotation of the boom 2.

[0038] Furthermore, the second drive assembly 6 includes a retractable roller 61, a second drive member 62 and a bracket 63. The bracket 63 is connected to the surface of the frame 11 and extends upward, and a cavity for connecting the retractable roller 61 is reserved in the middle. The retractable roller 61 is rotatably connected to the bracket 63. The second drive member 62 is a motor, and the outer shell of the second drive member 62 is connected to the bracket 63. The output end of the second drive member 62 passes through the outer wall of the bracket 63 and is coaxially connected to the retractable roller 61, thereby driving the retractable roller 61 to rotate, thereby realizing the reeling or releasing of the lifting rope 31. The second drive assembly 6 has a compact structure and clear functions, and can effectively control the reeling and releasing of the lifting rope 31, thereby improving the efficiency and stability of the lifting of the grab bucket 4.

[0039] Further, in order to reduce the weight of the boom 2 and ensure the structural strength of the boom 2, the boom 2 is set as a hollow steel structure, and the cross section of the boom 2 is rectangular. Two connecting pieces 24 are protruding from the middle position below the boom 2, and the connecting rod 53 is connected between the two connecting pieces 24 through a rotating shaft 531. The third driving assembly 7 includes a worm wheel 71, a worm 72 and a third driving member 73. The worm 72 is arranged inside the boom 2 along the length direction of the boom 2, close to the position of the connecting rod 53. The third driving member 73 is also arranged in the boom 2, and the third driving member 73 is a motor. The housing of the third driving member 73 is connected to the inner wall of the boom 2, and the output end of the third driving member 73 is coaxially connected to one end of the worm 72 to drive the worm 72 to rotate. The worm wheel 71 is coaxially connected to the rotating shaft 531 of the connecting rod 53, and the worm wheel 71 and the connecting rod 53 are fixedly connected. A slot is opened through the outer wall of the boom 2, and the slot is connected to the internal space. The worm wheel 71 is inserted into the inner space of the boom 2 through the slot and meshes with the worm 72. The worm wheel 71 is coaxially connected to the rotating end of the connecting rod 53. The worm 72 is arranged in the boom 2 along the length direction of the boom 2. The third driving member 73 drives the worm 72 to rotate, thereby driving the worm wheel 71 and the connecting rod 53 to rotate. The transmission of the worm wheel 71 and the worm 72 has a self-locking property, which can effectively prevent the connecting rod 53 from rotating automatically when not subjected to external force, thereby improving the stability of the auxiliary stabilizing frame 5.

[0040] Further, a slide groove 511 is concentrically provided on the inner wall of the basic arc frame 51. A baffle 513 is provided on one side of the basic arc frame 51 close to the center of the circle. The slide groove 511 is arc-shaped and located inside the baffle 513. The slide groove 511 penetrates the basic arc frame 51 downward, and both ends of the slide groove 511 penetrate the basic arc frame 51. The cross section of the slide groove 511 is an inverted L-shaped. The motion arc frame 52 is an arc-shaped structure with a long strip cross section. A convex arc strip 521 that can slide in the slide groove 511 is provided on the outer wall of the upper part of the motion arc frame 52. The convex arc strip 521 is located in the corner of the inverted L shape. The fourth drive assembly 8 includes a fourth drive member 81 and a drive gear 82. A mounting groove 512 for the drive gear 82 to rotate is provided in the basic arc frame 51. The mounting groove 512 is circular, and the mounting groove 512 is tangent to and connected to the slide groove 511. The outer wall of the convex arc strip 521 is provided with teeth 522, and the teeth 522 mesh with the driving gear 82. The fourth driving member 81 drives the driving gear 82 to rotate. The fourth driving assembly 8 includes the fourth driving member 81 and the driving gear 82. The inner wall of the basic arc frame 51 is concentrically provided with a slide groove 511. The moving arc frame 52 is provided with a convex arc strip 521 that slides in the slide groove 511. The driving gear 82 meshes with the teeth 522 on the convex arc strip 521. The fourth driving member 81 drives the driving gear 82 to rotate, thereby driving the moving arc frame 52 to slide. The fourth driving assembly 8 has a simple structure and high transmission efficiency, can effectively control the sliding of the moving arc frame 52, and enhances the adaptability and stability of the auxiliary stabilizing frame 5.

[0041] Furthermore, a chamfer 421 is provided on the outer circumference of the docking column 42, and an oblique angle 523 is provided on the inner wall of the bottom of the motion arc frame 52. A groove 422 is coaxially provided in the middle of the docking column 42. A connector 423 is provided at the bottom of the groove 422. The lifting rope 31 is connected to the connector 423. The structural design of the docking column 42 and the motion arc frame 52 is reasonable, which facilitates the quick connection and disconnection of the grab bucket 4 and the auxiliary stabilizing frame 5, and improves the operating efficiency and flexibility of the equipment.

[0042] Furthermore, the grab 4 includes a plurality of earth shovels 43, a base 41 and a fifth drive assembly 44. The plurality of earth shovels 43 are circumferentially connected to the base 41. The earth shovels 43 are rotatably connected to the base 41 through the support arm 431. The fifth drive assembly 44 includes a fluid supply cylinder 441, an electric control module 442 and a plurality of telescopic hydraulic rods 443. The fluid supply cylinder 441 and the electric control module 442 are arranged in the base 41. The cable 32 passes through the outer wall of the base 41 and is connected to the electric control module 442. One end of the telescopic hydraulic rod 443 is rotatably connected to the base 41, and the other end is rotatably connected to the middle of the corresponding support arm 431. The telescopic hydraulic rod 443 is connected to the fluid supply cylinder 441 through a fluid inlet pipe and a fluid outlet pipe. The telescopic hydraulic rod 443 is controlled to extend and retract by the electric control module 442, thereby driving the earth shovel 43 to rotate and realize the function of grabbing and releasing soil. The action of grabbing and releasing soil is stable and reliable, which improves the efficiency and quality of vertical excavation of foundation pits.

[0043] The implementation principle of a foundation pit vertical excavation device in the embodiment of the present application is: The crawler structure 12 at the bottom of the frame 11 is used for movement, and the steering structure 13 realizes the steering function. The operating room 14 is arranged on the frame 11, so that the operator can control the whole equipment. The power module 15 provides power to the grab 4. The boom 2 is driven by the first driving member 16 to realize rotation. One end of the lifting rope 31 and the cable 32 are connected to the grab 4, and the other end is wound or released through the reversing roller 21 and the second driving assembly 6, so as to control the lifting and lowering of the grab 4. The auxiliary stabilizing frame 5 is rotatably connected to the boom 2 through the connecting rod 53, and the sliding of the moving arc frame 52 is realized through the third and fourth driving assemblies 8, and cooperates with the basic arc frame 51 to form a circular structure. When the docking column 42 is inserted into it, the frame 11 can be rotated quickly and stably to increase the working efficiency.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A foundation pit vertical excavation device, characterized in that: The vehicle comprises a vehicle frame (11), a lifting arm (2), a lifting rope (31), a grab bucket (4) and an auxiliary stabilizing frame (5); a crawler structure (12) is arranged at the bottom of the vehicle frame (11), and a steering structure (13) is arranged between the crawler structure (12) and the vehicle frame (11); an operating room (14) is arranged on the vehicle frame (11); a power module (15) is arranged on the vehicle frame (11), and the grab bucket (4) is connected to the power module (15) via a cable (32); One end of the boom (2) is rotatably connected to the surface of the frame (11), and the other end extends outward; a first driving member (16) for driving the boom (2) to rotate is provided on the frame (11); a reversing roller (21) is provided at the end of the boom (2); one end of the hoisting rope (31) and the cable (32) are connected to the grab bucket (4), and the other end passes around the reversing roller (21) and then extends above the boom (2) to the frame (11); the frame (11) is provided with a second driving assembly (6) for winding or releasing the lifting rope (31); the auxiliary stabilizing frame (5) comprises a basic arc frame (51) and a moving arc frame (52); the basic arc frame (51) is provided with a connecting rod (53), one end of which is rotatably connected to the lifting arm (2), and the connecting rod (53) can be rotated to a horizontal position; the lifting arm (2) is provided with a third driving assembly (7) for driving the connecting rod (53) to rotate; the moving arc frame (52) is concentric with the base arc frame (51) and the connecting rod (53) is connected to the lifting arm (2 ... The auxiliary stabilizing frame (5) is slidably connected to the basic arc frame (51); the auxiliary stabilizing frame (5) is provided with a fourth driving component (8) for driving the moving arc frame (52) to move; the auxiliary stabilizing frame (5) can move with the connecting rod (53) to allow the lifting rope (31) to be located inside the frame; a docking column (42) is provided at one end of the grab bucket (4), the docking column (42) can coaxially penetrate into the auxiliary stabilizing frame (5), and the diameter of the docking column (42) corresponds to the inner diameter of the auxiliary stabilizing frame (5).

2. A foundation pit vertical excavation equipment according to claim 1, characterized in that: At least two lifting cables (31) are arranged in parallel; the cables (32) are located between the lifting cables (31); a plurality of tensioning rollers (22) are rotatably connected to the lifting arm (2); the lifting cables (31) and the cables (32) are wound around the reversing rollers (21) after passing through the tensioning rollers (22).

3. A foundation pit vertical excavation equipment according to claim 2, characterized in that: The reversing roller (21) and the plurality of tensioning rollers (22) are provided with a plurality of wire grooves (221) spaced apart in the circumferential direction, and the hoisting rope (31) and the cable (32) are clamped in the corresponding wire grooves (221).

4. The vertical excavation equipment for foundation pit according to claim 3, characterized in that: A cluster tube (23) is provided at one end of the boom (2) close to the vehicle frame (11), and three through holes are formed through the cluster tube (23); the cluster tube (23) is arranged along the length direction of the boom (2); the cable (32) passes through the cluster tube (23) and is connected to the power module (15); and the lifting rope (31) passes through the cluster tube (23) and is connected to the second drive assembly (6).

5. The vertical excavation equipment for foundation pit according to claim 1, characterized in that: The first driving member (16) is a hydraulic telescopic rod; the first driving member (16) is arranged on the side of the lifting arm (2); one end of the first driving member (16) is rotatably connected to the lifting arm (2), and the other end is rotatably connected to the vehicle frame (11).

6. The vertical excavation equipment for foundation pit according to claim 1, characterized in that: The second driving assembly (6) comprises a retractable roller (61), a second driving member (62) and a bracket (63); the bracket (63) is connected to the vehicle frame (11), and the retractable roller (61) is rotatably connected to the bracket (63); the second driving member (62) is connected to the bracket (63) to drive the retractable roller (61) to rotate; the lifting rope (31) is retracted on the retractable roller (61).

7. The vertical excavation equipment for foundation pit according to claim 6, characterized in that: The third driving assembly (7) comprises a worm wheel (71), a worm (72) and a third driving member (73); the worm wheel (71) is coaxially connected to the rotating end of the connecting rod (53); the worm (72) is arranged in the boom (2) along the length direction of the boom (2); the third driving member (73) is arranged in the boom (2) to drive the worm (72) to rotate; the worm wheel (71) penetrates into the boom (2) and meshes with the worm (72).

8. The vertical excavation equipment for foundation pit according to claim 7, characterized in that: The fourth driving assembly (8) comprises a fourth driving member (81) and a driving gear (82); a sliding groove (511) is concentrically provided on the inner wall of the basic arc frame (51); a convex arc bar (521) capable of sliding in the sliding groove (511) is provided on the moving arc frame (52); a mounting groove (512) for the driving gear (82) to rotate is provided in the basic arc frame (51); the mounting groove (512) is communicated with the sliding groove (511); teeth (522) are provided on the outer wall of the convex arc bar (521), and the teeth (522) mesh with the driving gear (82); the fourth driving member (81) drives the driving gear (82) to rotate.

9. The vertical excavation equipment for foundation pit according to claim 1, characterized in that: The outer edge of the docking column (42) is provided with a chamfer (421) in the circumferential direction, and the inner wall of the bottom of the motion arc frame (52) is provided with an oblique angle (523); a groove (422) is coaxially provided in the middle of the docking column (42); a connector (423) is provided at the bottom of the groove (422); and the lifting rope (31) is connected to the connector (423).

10. The vertical excavation equipment for foundation pit according to claim 9, characterized in that: The grab bucket (4) comprises a plurality of earth shovels (43), a base (41) and a fifth drive assembly (44); the plurality of earth shovels (43) are circumferentially connected to the base (41); the earth shovels (43) are rotatably connected to the base (41) via a support arm (431); the fifth drive assembly (44) comprises a liquid supply cylinder (441), an electric control module (442) and a plurality of telescopic hydraulic rods (443); the liquid supply cylinder (441) and the electric control module (442) are arranged in the base (41); the cable (32) passes through the outer wall of the base (41) and is connected to the electric control module (442); one end of the telescopic hydraulic rod (443) is rotatably connected to the base (41), and the other end is rotatably connected to the middle part of the corresponding support arm (431); the telescopic hydraulic rod (443) is connected to the liquid supply cylinder (441) via a liquid inlet pipe and a liquid outlet pipe.

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