Soft soil layer super deep foundation pit excavation equipment and construction method

Abstract

The application provides a soft soil layer super-deep foundation pit excavation equipment, which comprises a excavator body, a mechanical arm connected to the output end of the excavator body, and a bucket hinged to the end of the mechanical arm; the bucket comprises an arc-shaped bucket plate hinged to the mechanical arm, and a through installation slot is formed in the sidewall of the arc-shaped bucket plate. In the process of excavating the soft soil layer, when the edge of the pile foundation is reached, the two arc-shaped extension plates are driven to slide along the installation slots to the two sides of the installation slots, the two side bucket plates are driven to move, the distance between the two side bucket plates is adjusted, the opening of the bucket is enlarged, the distance between the side bucket plate of the bucket and the mechanical arm is increased, at this time, the two movable bucket teeth are displaced, one of the movable bucket teeth is located on one side of the pile foundation, and the other movable bucket tooth is located on the other side of the pile foundation, the soil on the side of the pile foundation away from the excavator body can be directly excavated, the position of the excavator body does not need to be adjusted, the work efficiency is improved, and the super-deep foundation pit excavation efficiency of the soft soil layer is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of foundation pit excavation equipment, in particular to a soft soil layer super-deep foundation pit excavation equipment and construction method. BACKGROUND

[0002] A foundation pit is a deep and wide excavated area on the ground or underground, usually used for construction, civil engineering and underground facilities. The shape and size of the foundation pit are determined according to the specific engineering requirements, which can be square, rectangular, circular or other shapes.

[0003] A soft soil layer super-deep foundation pit refers to a foundation pit with a large depth excavated in a soft soil layer. The soft soil layer usually has low bearing capacity and high deformation, so special design and construction methods are needed when performing super-deep foundation pit engineering. The key issues to be considered when performing super-deep foundation pit engineering in soft soil layer are as follows: 1. Geological investigation and analysis; 2. Soil reinforcement and improvement; 3. Foundation pit support structure; 4. Groundwater management; 5. Monitoring and control;

[0004] Currently, soil reinforcement and improvement usually use prestressed anchor, grouting reinforcement, mixing pile and other pile foundation technologies to enhance the stability and bearing capacity of the soil. After the soil is reinforced, the excavator can be used to excavate the foundation pit;

[0005] However, the existing excavator has the following defects in the process of excavating the foundation pit:

[0006] The opening size of the excavator bucket is fixed, and the distance between the bucket side and the mechanical arm cannot be adjusted, which leads to the inability to directly excavate the soil on the side of the pile foundation away from the excavator, and the need to adjust the position of the excavator itself to achieve direct excavation of the soil on the side of the pile foundation away from the excavator, affecting the work efficiency;

[0007] Therefore, the present application provides a soft soil layer super-deep foundation pit excavation equipment. SUMMARY

[0008] In view of the deficiencies of the prior art, the present application provides a soft soil layer super-deep foundation pit excavation equipment to solve the problems mentioned in the background art.

[0009] To achieve the above purpose, the present application realizes the following technical solutions:

[0010] A soft soil layer super-deep foundation pit excavation equipment, comprising an excavator body, the excavator body output end is connected with a mechanical arm, and the mechanical arm end is hinged with a bucket;

[0011] The digging bucket comprises an arc-shaped bucket plate hinged on the mechanical arm, a through installation slot is formed in the sidewall of the arc-shaped bucket plate, two arc-shaped extension plates with opposite moving directions are slidably installed on the arc-shaped bucket plate and located in the installation slot, the opposite sides of the two arc-shaped extension plates are fixedly provided with side bucket plates which are attached to the arc-shaped bucket plate, and the two side bucket plates and the arc-shaped bucket plate form an open digging bucket.

[0012] One end of the arc-shaped bucket plate is symmetrically fixed with a fixed bucket tooth below the open end of the digging bucket, and a movable bucket tooth is fixed on each of the two side bucket plates and located below the open end of the digging bucket.

[0013] A driving mechanism for the two arc-shaped extension plates is installed on the arc-shaped bucket plate and located in the installation slot, and is used to reversely slide the two arc-shaped extension plates in the installation slot.

[0014] Further, the driving mechanism comprises a bidirectional threaded rod rotatably installed in the installation slot, the bidirectional threaded rod is threadedly connected with the two arc-shaped extension plates, a first motor is fixedly installed in the installation slot, and the output end of the first motor is connected with the bidirectional threaded rod through a bevel gear assembly.

[0015] Further, the opposite sides of the two side bucket plates are fixedly provided with arc-shaped cleaning plates which are attached to the inner concave surface of the arc-shaped bucket plate, and the opposite sides of the two arc-shaped cleaning plates are provided with inclined surfaces, and when the two side bucket plates are attached to the arc-shaped bucket plate, the opposite sides of the two arc-shaped cleaning plates are attached to each other.

[0016] Further, a plurality of water permeation holes are formed in the side bucket plate and away from the open end of the digging bucket, and a plugging mechanism for plugging the plurality of water permeation holes is installed on the side bucket plate.

[0017] Further, the plugging mechanism comprises:

[0018] A plugging plate, a through hole which is in communication with the plurality of water permeation holes is formed in the sidewall of the side bucket plate, and the plugging plate is threadedly connected with the side bucket plate and plugs the through hole;

[0019] A rotating plate which is rotatably installed on one side of the plugging plate, a plurality of penetrating rods are fixedly provided on the side of the rotating plate away from the plugging plate, the plurality of penetrating rods correspond to the plurality of water permeation holes in a one-to-one manner, and when the plugging plate plugs the through hole, the penetrating rods penetrate the water permeation holes and plug the water permeation holes.

[0020] Further, a vibration breaking mechanism is installed on the digging bucket and is used to break the concrete foundation pile.

[0021] Further, the vibration breaking mechanism comprises:

[0022] The fixed block is fixedly installed in the mounting groove, a guide rod is fixedly arranged on the fixed block, a mounting block is slidably installed on the guide rod along the axial direction of the guide rod, a fixed rod is fixedly arranged on the mounting block, a connecting hole is arranged on the arc-shaped bucket plate and located at the opposite side of the two fixed bucket teeth, the fixed rod is parallel to the axial direction of the guide rod, and the fixed rod can penetrate through the connecting hole;

[0023] The opposite side of the two fixed bucket teeth is provided with a movable bucket tooth, one end of the movable bucket tooth penetrates through the connecting hole and is threadedly connected with the fixed rod, a vibration motor is fixedly installed on the mounting block, and a driving piece for acting on the mounting block is installed on the fixed block, which is used to make the mounting block slide along the guide rod.

[0024] Further, the driving piece comprises a driving rod rotatably installed on the fixed block, the driving rod is threadedly connected with the mounting block, and a second motor connected with the driving rod is fixedly installed on the fixed block.

[0025] A control assembly is installed in the mounting groove and close to the connecting hole, and the control assembly is in communication connection with the vibration motor when the mounting block is in abutment with the control assembly.

[0026] Further, the control assembly comprises a positioning block installed in the mounting groove, a groove is arranged on the side of the positioning block close to the mounting block, a housing is fixedly arranged in the groove in a symmetrical mode, a connecting rod movably penetrates through the housing on the side of the housing close to the mounting block, abutment plates are fixedly arranged at the ends of the two connecting rods and located in the groove, springs are installed in the housing and located on the opposite side of the housing and the connecting rod, and a gravity sensor in contact with the abutment plates is fixedly installed in the groove.

[0027] Further, the positioning block is arranged in the mounting groove and movably sleeved on the outside of the guide rod, and an electric push rod connected with the positioning block is fixedly installed in the mounting groove.

[0028] The application provides a soft soil layer super-deep foundation pit excavation equipment.

[0029] 1. In the process of excavating the soft soil foundation layer, when the pile foundation edge is excavated, the two arc-shaped extension plates are driven by the driving mechanism to slide along the two sides of the mounting groove, the two side bucket plates are driven to move, the distance between the two side bucket plates is adjusted, the opening of the excavator is enlarged, the distance between the side bucket plate of the excavator and the mechanical arm is increased, at this time, the two movable bucket teeth are displaced, one of the movable bucket teeth is located on one side of the pile foundation, and the other movable bucket tooth is located on the other side of the pile foundation, so that the soil on the side of the pile foundation away from the excavator body can be directly excavated without adjusting the position of the excavator body, the working efficiency is improved, and the soft soil layer super-deep foundation pit excavation efficiency is improved.

[0030] 2、In the soft soil of large area barrier-free area is excavated, can be adjusted to the interval between two side bucket plates, make the interval between two side bucket plates maximum, so that the opening of the bucket is maximum, when the software is excavated, improve the efficiency of excavation. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below, obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0032] Figure 1 The three-dimensional structure schematic diagram of the present application is shown;

[0033] Figure 2 The three-dimensional structure schematic diagram of the bucket of the present application is shown;

[0034] Figure 3 The front view of the bucket of the present application is shown;

[0035] Figure 4 The three-dimensional structure sectional view of the present application in A-A direction is shown; Figure 3

[0036] Figure 5 The three-dimensional structure sectional view of the present application in B-B direction is shown; Figure 3

[0037] Figure 6 The sectional view of the present application in C-C direction is shown; Figure 3

[0038] Figure 7 The sectional view of the present application in D-D direction is shown; Figure 3

[0039] Figure 8 The structure schematic diagram of the vibration crushing mechanism of the present application is shown;

[0040] Figure 9 The structure schematic diagram of the control assembly of the present application is shown;

[0041] ​​​​As shown in the figure: 1, mechanical arm; 2, excavator bucket; 21, arc-shaped bucket plate; 211, fixed bucket tooth; 212, connecting hole; 22, mounting groove; 23, arc-shaped extension plate; 24, side bucket plate; 241, moving bucket tooth; 242, arc-shaped cleaning plate; 243, water seepage hole; 244, through hole; 3, driving mechanism; 31, bidirectional threaded rod; 32, first motor; 33, bevel gear assembly; 4, plugging mechanism; 41, plugging plate; 42, rotating plate; 43, through rod; 5, vibration crushing mechanism; 51, fixed block; 52, guide rod; 53, mounting block; 54, fixed rod; 55, movable bucket tooth; 56, vibration motor; 57, driving piece; 571, driving rod; 572, second motor; 6, control assembly; 61, positioning block; 62, groove; 63, shell; 64, connecting rod; 65, abutting plate; 66, spring; 67, gravity sensor; 7, electric push rod; 100, excavator body. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0043] Embodiment one

[0044] In order to solve the technical problems in the background art, the following soft soil layer super deep foundation pit excavation equipment is given:

[0045] In combination with Figures 1-9 As shown in the figure, the present application provides a soft soil layer super deep foundation pit excavation equipment, which comprises an excavator body 100, the output end of the excavator body 100 is connected with a mechanical arm 1, and the end of the mechanical arm 1 is hingedly connected with an excavator bucket 2; the excavator bucket 2 comprises an arc-shaped bucket plate 21 hingedly connected to the mechanical arm 1, a through mounting groove 22 is formed in the side wall of the arc-shaped bucket plate 21, two arc-shaped extension plates 23 with opposite moving directions are slidably mounted on the arc-shaped bucket plate 21 and located in the mounting groove 22, the opposite sides of the two arc-shaped extension plates 23 are both fixedly connected with a side bucket plate 24 abutting the arc-shaped bucket plate 21, and the excavator bucket 2 with one side in an open shape is formed by the two side bucket plates 24 and the arc-shaped bucket plate 21; a fixed bucket tooth 211 is symmetrically fixed to one end of the arc-shaped bucket plate 21 and located below the opening end of the excavator bucket 2, and a movable bucket tooth 241 is fixed to each of the two side bucket plates 24 and located below the opening end of the excavator bucket 2; a driving mechanism 3 for the two arc-shaped extension plates 23 is mounted on the arc-shaped bucket plate 21 and located in the mounting groove 22, and is used to make the two arc-shaped extension plates 23 slide reversely in the mounting groove 22.

[0046] In the process of excavating the soft soil layer, when the pile foundation edge is excavated, the two arc-shaped extension plates 23 are driven by the driving mechanism 3 to slide along the two sides of the installation groove 22, driving the two side bucket plates 24 to move, adjusting the distance between the two side bucket plates 24, increasing the opening of the excavator 2, and increasing the distance between the side bucket plates 24 of the excavator 2 and the mechanical arm 1. At this time, the two movable teeth 241 are displaced, so that one of the movable teeth 241 and the fixed teeth 211 are located on both sides of the pile foundation, respectively, so that the soil on the side of the pile foundation away from the excavator body 100 can be directly excavated without adjusting the position of the excavator body 100 itself, improving the working efficiency, thereby improving the excavating efficiency of the soft soil layer of the super-deep foundation pit; and when excavating the soft soil in a large area without obstacles, the distance between the two side bucket plates 24 can be adjusted to maximize the distance between the two side bucket plates 24, thereby maximizing the opening of the excavator 2. When excavating the software, the excavating efficiency is improved.

[0047] Embodiment two

[0048] As Figures 1-9 shown, on the basis of the above embodiment, the present embodiment further gives the following contents:

[0049] In the present embodiment, the driving mechanism 3 includes a bidirectional threaded rod 31 rotatably installed in the installation groove 22, the bidirectional threaded rod 31 is threadedly connected with the two arc-shaped extension plates 23, a first motor 32 is fixedly installed in the installation groove 22, and the output end of the first motor 32 is connected with the bidirectional threaded rod 31 through a bevel gear assembly 33.

[0050] In use, the output shaft of the first motor 32 is controlled to rotate, which can drive the bidirectional threaded rod 31 to rotate through the bevel gear assembly 33, so that the two arc-shaped extension plates 23 can slide reversely in the installation groove 22, and the distance between the two side bucket plates 24 can be adjusted for easy control.

[0051] In the present embodiment, the opposite sides of the two side bucket plates 24 are fixedly installed with arc-shaped cleaning plates 242 abutting the concave surface in the arc-shaped bucket plate 21, and the opposite sides of the two arc-shaped cleaning plates 242 are provided with inclined surfaces. When the two side bucket plates 24 abut the arc-shaped bucket plate 21, the opposite sides of the two arc-shaped cleaning plates 242 abut.

[0052] During the excavation of the foundation pit, when digging clay, when the distance between the two side bucket plates 24 is the largest, when the clay adheres to the inner concave surface of the arc bucket plate 21, the operator can control the first motor 32 to rotate the bidirectional threaded rod 31, so that the two arc cleaning plates 242 approach each other, and the clay adhered to the inner concave surface of the arc bucket plate 21 can be squeezed outward along the inclined surface. At the same time, the operator controls the excavator body 100 to make the bucket 2 shake, and the clay can be cleaned; the two side bucket plates 24 are aligned with the arc bucket plate 21 fit together, when clay adheres to the two arc-shaped cleaning plates 242, the operator can control the first motor 32 to make the bidirectional threaded rod 31 rotate back and forth, so that the two side bucket plates 24 are constantly approaching and moving away from each other, and the two arc-shaped cleaning plates 242 slide back and forth on the concave surface of the arc-shaped bucket plate 21, so that the clay is loosened. At the same time, with the cooperation of the operator controlling the excavator body 100 to make the bucket 2 shake, the clay can be cleaned, thereby facilitating the cleaning of the clay attached to the bucket 2.

[0053] Example 3

[0054] like Figures 1-9 As shown, based on the above embodiment, this embodiment further provides the following content:

[0055] In this embodiment, a plurality of water seepage holes 243 are provided on the side bucket plate 24 away from the opening end of the bucket 2 , and a blocking mechanism 4 for blocking the plurality of water seepage holes 243 is installed on the side bucket plate 24 .

[0056] By utilizing the design of the seepage holes 243, when the soil in the soft soil foundation pit contains moisture, the blocking of the through holes 244 by the blocking mechanism 4 is cancelled during excavation of the foundation pit. When the bucket 2 excavates the soft soil, the soil is squeezed in the bucket 2, so that the moisture in the soil forms a water flow and is discharged through the seepage holes 243, thereby effectively preventing the soft soil from being loaded into the dump truck and the water from flowing to the ground, causing the ground to become wet and affecting the passage of vehicles. The design of the blocking mechanism 4 realizes the blocking of several seepage holes 243.

[0057] In this embodiment, the blocking mechanism 4 includes: a blocking plate 41, and the side wall of the side bucket plate 24 is provided with a through hole 244 that is connected to a plurality of water seepage holes 243. The blocking plate 41 is threadedly connected to the side bucket plate 24 and blocks the through hole 244; a rotating plate 42, which is rotatably installed on one side of the blocking plate 41, and a plurality of through rods 43 are fixed on the side of the rotating plate 42 away from the blocking plate 41. The plurality of through rods 43 correspond one-to-one to the plurality of water seepage holes 243. When the blocking plate 41 blocks the through hole 244, the through rod 43 penetrates the water seepage hole 243 and blocks the water seepage hole 243.

[0058] The blocking plate 41 is rotated in the through hole 244 and the blocking plate 41 is disassembled to block the through hole 244, thereby canceling the blocking of the seepage hole 243, and the operation is simple; during the excavation of the foundation pit, when digging clay, a plurality of through rods 43 are made to correspond one to one with a plurality of seepage holes 243, and the blocking plate 41 is located in the through hole 244, and the blocking plate 41 is rotated in the through hole 244 to block the through hole 244, so that the through rod 43 passes through the seepage hole 243, and the mud and water remaining in the seepage hole 243 are cleaned, and the through rod 43 blocks the seepage hole 243, thereby effectively avoiding the situation where clay enters the seepage hole 243 when digging clay, causing the seepage hole 243 to be blocked, affecting subsequent use.

[0059] In this embodiment, a vibration crushing mechanism 5 is installed on the bucket 2, which is used to crush the concrete foundation piles.

[0060] The design of the vibration crushing mechanism 5 facilitates the crushing of the concrete of the concrete pile foundation, thereby eliminating the need to replace the impact hammer, facilitating the crushing of the concrete foundation pile and improving work efficiency.

[0061] Example 4

[0062] like Figures 1-9 As shown, based on the above embodiment, this embodiment further provides the following content:

[0063] In this embodiment, the vibration crushing mechanism 5 includes: a fixed block 51, which is fixedly installed in the mounting groove 22, a guide rod 52 is fixed on the fixed block 51, a mounting block 53 is slidably installed on the guide rod 52 along its axial direction, a fixed rod 54 is fixed on the mounting block 53, a connecting hole 212 is opened on the arc-shaped bucket plate 21 and located on the opposite side of the two fixed bucket teeth 211, the fixing rod 54 is parallel to the axial direction of the guide rod 52, and the fixing rod 54 can pass through the connecting hole 212; a movable bucket tooth 55 is provided on the opposite side of the two fixed bucket teeth 211, one end of the movable bucket tooth 55 passes through the connecting hole 212 and is threadedly connected to the fixed rod 54; a vibration motor 56 is fixedly installed on the mounting block 53, and a driving member 57 acting on the mounting block 53 is installed on the fixed block 51, which is used to make the mounting block 53 slide along the guide rod 52.

[0064] During the excavation of the foundation pit, the soil is continuously excavated, and the pile foundation is exposed to the outside. When the concrete of the pile foundation is crushed, the second motor 572 is controlled to be turned on, the output shaft of the second motor 572 rotates, that is, the driving rod 571 is driven to rotate, so that the mounting block 53 moves along the driving rod 571 in a spiral manner, and the fixed rod 54 moves to the outside of the arc-shaped bucket plate 21 in the direction of the movable bucket tooth 55. The vibration motor 56 is controlled to be turned on, and the vibration motor 56 vibrates to drive the mounting block 53, the fixed rod 54 and the movable bucket tooth 55 to vibrate. The movable bucket tooth 55 is in contact with the pile foundation concrete, so that the pile foundation concrete can be crushed.

[0065] In the embodiment, the driving piece 57 includes a driving rod 571 rotatably installed on the fixed block 51, the driving rod 571 is threadedly connected with the mounting block 53, the fixed block 51 is fixedly provided with a second motor 572 connected with the driving rod 571, the second motor 572 is controlled to be turned on, the output shaft of the second motor 572 rotates, that is, the driving rod 571 is driven to rotate, so that the mounting block 53 moves along the driving rod 571 in a spiral manner, and the mounting block 53 slides along the axis direction of the guide rod 52, which is convenient for control; the control assembly 6 is installed in the installation groove 22 and close to the connecting hole 212, when the mounting block 53 is in contact with the control assembly 6, the control assembly 6 is in communication connection with the vibration motor 56, and specifically, the control panel is arranged in the operating chamber of the excavator body 100, the control panel is in communication connection with the vibration motor 56 through the control assembly 6, and the control panel is in communication connection with the first motor 32 and the second motor 572.

[0066] The control assembly 6 is designed, when the mounting block 53 is in contact with the control assembly 6, the vibration motor 56 is not controlled by the control panel and cannot be turned on, on the one hand, the vibration motor 56 is effectively avoided from being in the open state during the working process of the excavator 2, the vibration motor 56 does useless work, and energy waste is caused, on the other hand, the vibration motor 56 is avoided from doing useless work, and the service life is affected.

[0067] In the embodiment, the control assembly 6 includes a positioning block 61 installed in the installation groove 22, a recess 62 is formed in one side of the positioning block 61 close to the mounting block 53, a housing 63 is fixedly arranged in the recess 62 in a symmetrical manner, a connecting rod 64 movably penetrates the housing 63 close to the mounting block 53, abutting plates 65 are fixedly arranged at the ends of the two connecting rods 64 and located in the recess 62, springs 66 are arranged in the housing 63 and located at the opposite side of the housing 63 and the connecting rod 64, and a gravity sensor 67 in contact with the abutting plates 65 is fixedly arranged in the recess 62.

[0068] In the embodiment, the positioning block 61 is arranged in the installation groove 22 and movably sleeved outside the guide rod 52, and an electric push rod 7 connected with the positioning block 61 is fixedly arranged in the installation groove 22.

[0069] When the clay adhered in the excavator 2 is cleaned, the positioning block 61 is set in the mounting groove 22 and movably sleeved outside the guide rod 52, the positioning block 61 is moved by the electric push rod 7, the abutting plate 65 abuts against the mounting block 53, at this time, the vibration motor 56 is controlled to be turned on, the vibration motor 56 vibrates, the mounting block 53 is vibrated, the excavator 2 is resonated, and the clay adhered in the excavator 2 is further cleaned.

[0070] The working principle and use process of the present application are as follows:

[0071] After the soil body is reinforced, the soft soil layer in the foundation pit can be excavated by the excavator body 100. During the excavation of the soft soil layer, when the pile foundation edge is excavated, the operator of the excavator body 100 can control the first motor 32 to be turned on, the output shaft of the first motor 32 rotates to drive the two-way threaded rod 31 to rotate through the bevel gear assembly 33, so that the two arc-shaped extension plates 23 slide along the two sides of the mounting groove 22, respectively, drive the two side bucket plates 24 to move, adjust the distance between the two side bucket plates 24, increase the opening of the excavator 2, increase the distance between the side bucket plates 24 of the excavator 2 and the mechanical arm 1, at this time, the two movable bucket teeth 241 are displaced, and one of the movable bucket teeth 241 and the fixed bucket teeth 211 are located on the two sides of the pile foundation, respectively, so that the soil on the side of the pile foundation away from the excavator body 100 can be directly excavated, without adjusting the position of the excavator body 100 itself, improving the working efficiency, thereby improving the excavating efficiency of the super-deep foundation pit of the soft soil layer.

[0072] When the soft soil in the foundation pit contains water, the blocking plate 41 is rotated in the through hole 244 during the excavation of the foundation pit, the blocking plate 41 is disassembled, the through hole 244 is blocked, and the seepage hole 243 is unblocked. When the excavator 2 excavates the soft soil, the soil is extruded in the excavator 2, so that the water in the soil forms a water flow through the seepage hole 243, thereby effectively avoiding the soft soil from being loaded into the dump truck, the water flowing to the ground, and the ground being wet, thereby affecting the vehicle passing. When excavating clay during the excavation of the foundation pit, the plurality of penetrating rods 43 are correspondingly arranged with the plurality of seepage holes 243, the blocking plate 41 is located in the through hole 244, the blocking plate 41 is rotated in the through hole 244, the blocking plate 41 is spirally moved along the through hole 244, the rotating plate 42 is rotated with the blocking plate 41, the penetrating rod 43 penetrates through the seepage hole 243, the residual mud water in the seepage hole 243 is cleaned, and the seepage hole 243 is blocked by the penetrating rod 43, thereby effectively avoiding the clay from entering the seepage hole 243 during the excavation of the clay, causing the seepage hole 243 to be blocked, and affecting the subsequent use.

[0073] During the excavation of the foundation pit, the soil is continuously excavated, and the concrete of the pile foundation is broken after the pile foundation is exposed to the outside. The second motor 572 is controlled to be turned on, the output shaft of the second motor 572 is rotated, the driving rod 571 is driven to rotate, the mounting block 53 is spirally moved along the driving rod 571, the mounting block 53 is slid along the axis direction of the guide rod 52, the fixing rod 54 is moved to the outside of the arc-shaped bucket plate 21 in the direction of the movable bucket tooth 55, the mounting block 53 is in contact with the abutting plate 65, the connecting rod 64 is slid along the housing 63 to the inside, the spring 66 is deformed, the abutting plate 65 is in contact with the gravity sensor 67, the gravity sensor 67 detects the change of the data, transmits the signal to the control panel, and controls the second motor 572 to be turned off through the control panel. At this time, the operator can control the excavator body 100 to make the movable bucket tooth 55 abut against the pile foundation concrete, and then control the vibration motor 56 to be turned on. The vibration motor 56 vibrates to drive the mounting block 53, the fixing rod 54, and the movable bucket tooth 55 to vibrate, the movable bucket tooth 55 abuts against the pile foundation concrete, thereby breaking the pile foundation concrete. The impact hammer does not need to be replaced, which facilitates the breaking of the concrete pile foundation and improves the work efficiency. When the mounting block 53 abuts against the control assembly 6, the vibration motor 56 is not controlled by the control panel and cannot be turned on. On the one hand, the vibration motor 56 is not in the open state during the operation of the excavator 2, the vibration motor 56 does useless work, and energy is wasted. On the other hand, the vibration motor 56 does not do useless work, and the service life is affected.

[0074] When the foundation pit is excavated, the clay is excavated, the two side bucket plates 24 are at the maximum distance, the clay is attached to the concave surface of the arc-shaped bucket plate 21, the operator can control the first motor 32 to make the bidirectional threaded rod 31 rotate, the two arc-shaped cleaning plates 242 are close to each other, the clay attached to the concave surface of the arc-shaped bucket plate 21 can be extruded outward along the inclined surface, and meanwhile, under the cooperation of the operator controlling the excavator body 100 to make the excavator bucket 2 shake, the clay can be cleaned; when the two side bucket plates 24 are attached to the arc-shaped bucket plate 21, the clay is attached to the two arc-shaped cleaning plates 242, the operator can control the first motor 32 to make the bidirectional threaded rod 31 reciprocating rotate, the two side bucket plates 24 are constantly close to and away from each other, the two arc-shaped cleaning plates 242 reciprocating slide on the concave surface of the arc-shaped bucket plate 21, the clay is loose, and meanwhile, under the cooperation of the operator controlling the excavator body 100 to make the excavator bucket 2 shake, the clay can be cleaned, thereby facilitating the cleaning of the clay attached to the excavator bucket 2; when the clay attached to the excavator bucket 2 is cleaned, the positioning block 61 is arranged in the mounting groove 22 and movably sleeved outside the guide rod 52, the positioning block 61 can be moved by the electric push rod 7, the abutting plate 65 abuts against the mounting block 53, at this time, the vibration motor 56 can be controlled to be turned on, the vibration motor 56 vibrates, drives the mounting block 53 to vibrate, and makes the excavator bucket 2 resonate, thereby further facilitating the cleaning of the clay attached to the excavator bucket 2.

[0075] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Additionally, unless otherwise specified, the use of the singular includes the plural and vice versa.

[0076] The above embodiments are only used to illustrate the technical solutions of the present application, rather than limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A soft ground layer super deep foundation pit excavation equipment, characterized in that: The excavator body is connected with a mechanical arm at the output end, and the end of the mechanical arm is hingedly connected with a bucket; The bucket comprises an arc-shaped bucket plate hingedly connected with the mechanical arm, a through installation slot is formed in the side wall of the arc-shaped bucket plate, two arc-shaped extension plates with opposite moving directions are slidably installed on the arc-shaped bucket plate and located in the installation slot, the opposite sides of the two arc-shaped extension plates are fixedly provided with side bucket plates which are attached to the arc-shaped bucket plate, and the two side bucket plates and the arc-shaped bucket plate form a bucket with one side being open; One end of the arc-shaped bucket plate and below the open end of the bucket are symmetrically fixed with fixed bucket teeth, and the two side bucket plates and below the open end of the bucket are fixed with movable bucket teeth; A driving mechanism for the two arc-shaped extension plates is installed on the arc-shaped bucket plate and located in the installation slot, which is used to make the two arc-shaped extension plates slide reversely in the installation slot; A plurality of water seepage holes are formed in the side bucket plate and away from the open end of the bucket, and a blocking mechanism for blocking the plurality of water seepage holes is installed on the side bucket plate; The blocking mechanism comprises: A blocking plate, a through hole which is in communication with the plurality of water seepage holes is formed in the side wall of the side bucket plate, and the blocking plate is threadedly connected with the side bucket plate and blocks the through hole; A rotating plate is rotatably installed on one side of the blocking plate, a plurality of penetrating rods are fixedly arranged on the side of the rotating plate away from the blocking plate, the plurality of penetrating rods correspond to the plurality of water seepage holes one by one, and when the blocking plate blocks the through hole, the penetrating rods penetrate the water seepage holes and block the water seepage holes; A vibration breaking mechanism is installed on the bucket, which is used to break the concrete foundation pile; The vibration breaking mechanism comprises: A fixed block is fixedly installed in the installation slot, a guide rod is fixedly arranged on the fixed block, an installation block is slidably installed on the guide rod along the axial direction of the guide rod, a fixed rod is fixedly arranged on the installation block, a connecting hole is formed in the arc-shaped bucket plate and located on the opposite side of the two fixed bucket teeth, the fixed rod is parallel to the axial direction of the guide rod, and the fixed rod can penetrate the connecting hole; An active bucket tooth is arranged on the opposite side of the two fixed bucket teeth, one end of the active bucket tooth penetrates the connecting hole and is threadedly connected with the fixed rod, a vibration motor is fixedly installed on the installation block, and a driving piece which acts on the installation block is installed on the fixed block, which is used to make the installation block slide along the guide rod; The driving piece comprises a driving rod which is rotatably installed on the fixed block, the driving rod is threadedly connected with the installation block, and a second motor which is connected with the driving rod is fixedly installed on the fixed block; A control assembly is installed in the installation slot and close to the connecting hole, and the control assembly is in communication connection with the vibration motor when the installation block abuts against the control assembly; The control assembly comprises a positioning block which is installed in the installation slot, a recess is formed in the side of the positioning block close to the installation block, a housing is symmetrically fixedly arranged in the recess, a connecting rod is movably arranged in the housing and close to the installation block, an abutting plate is fixedly arranged on the end of the two connecting rods and located in the recess, a spring is installed in the housing and located on the opposite side of the housing and the connecting rod, and a gravity sensor which is in contact with the abutting plate is fixedly installed in the recess.

2. The soft ground layer super-deep foundation pit excavation apparatus according to claim 1, characterized in that: The driving mechanism comprises a two-way threaded rod rotatably installed in the mounting groove, the two-way threaded rod is threadedly connected with the two arc-shaped extension plates, a first motor is fixedly installed in the mounting groove, and the output end of the first motor is connected with the two-way threaded rod through a bevel gear assembly.

3. The soft ground layer super-deep foundation pit excavation apparatus according to claim 2, characterized in that: The opposite sides of the two side bucket plates are fixedly installed with arc-shaped cleaning plates abutting against the inner concave surface of the arc-shaped bucket plate, and the opposite sides of the two arc-shaped cleaning plates are provided with inclined surfaces.

4. The soft ground layer super-deep foundation pit excavation apparatus according to claim 3, characterized in that: The positioning block is arranged in the mounting groove and movably sleeved on the outside of the guide rod, and an electric push rod connected with the positioning block is fixedly installed in the mounting groove.

5. The construction method of a soft ground layer super deep foundation pit excavation equipment according to claim 4, characterized in that, The construction steps are as follows: After the soil body is reinforced, the soft soil base layer in the foundation pit can be excavated by the excavator body when the foundation pit is excavated; During the excavation of the soft soil base layer, when the pile foundation edge is excavated, the excavator operator can control the first motor to be opened, and the rotation of the output shaft of the first motor can drive the two-way threaded rod to rotate through the bevel gear assembly, so that the two arc-shaped extension plates slide to the two sides of the mounting groove respectively, the two side bucket plates are driven to move, the distance between the two side bucket plates is adjusted, the opening of the bucket is enlarged, the distance between the side bucket plates of the bucket and the mechanical arm is increased, at this time, the two movable bucket teeth are displaced, and one of the movable bucket teeth and the fixed bucket teeth are located on the two sides of the pile foundation respectively, so that the soil on the side of the pile foundation away from the excavator body can be directly excavated without adjusting the position of the excavator body, the working efficiency is improved, and the excavation efficiency of the super-deep foundation pit of the soft soil layer is improved. When the soft soil in the foundation pit contains water, the blocking plate is rotated in the through hole during the excavation of the foundation pit, the blocking plate is disassembled, the through hole is cancelled, the seepage hole is cancelled, the soil in the bucket is extruded when the bucket excavates the soft soil, so that the water in the soil forms a water flow and is discharged through the seepage hole, thereby effectively avoiding the situation that the soft soil is loaded into the muck car, the water flows to the ground, the ground is wet, and the vehicle passage is affected; when excavating clay during the excavation of the foundation pit, the plurality of penetrating rods are one-to-one corresponding to the plurality of seepage holes, the blocking plate is located in the through hole, the blocking plate is rotated in the through hole, the blocking plate moves spirally along the through hole, the rotating plate and the blocking plate rotate, the penetrating rod penetrates through the seepage hole, the residual mud water in the seepage hole is cleaned, and the seepage hole is blocked by the penetrating rod, thereby effectively avoiding the situation that clay enters the seepage hole during the excavation of clay, causing the seepage hole to be blocked and affecting subsequent use. During the foundation pit excavation process, the soil is continuously excavated, and the pile foundation is exposed to the outside. When the concrete of the pile foundation is crushed, the second motor is controlled to be turned on, the second motor output shaft rotates, which drives the rod to rotate, so that the mounting block moves along the spiral rod, and the mounting block slides along the axis direction of the guide rod, so that the fixed rod moves to the outside of the arc-shaped bucket plate in the direction of the movable bucket tooth, the mounting block contacts the abutment plate, the connecting rod slides along the shell to the inside, the spring deforms, the abutment plate abuts against the gravity sensor, the gravity sensor detects the change of the data, and transmits the signal to the control panel and controls the second motor to be turned off through the control panel. At this time, the operator can control the excavator body to make the movable bucket tooth abut against the pile foundation concrete, and then control the vibration motor to be turned on. The vibration motor vibrates to drive the mounting block, the fixed rod and the movable bucket tooth to vibrate, and the movable bucket tooth abuts against the pile foundation concrete, so that the pile foundation concrete can be crushed without replacing the impact hammer. When the foundation pit is excavated, the distance between the two side bucket plates is the largest, and the clay adheres to the inner concave surface of the arc-shaped bucket plate. The operator can control the first motor to rotate the bidirectional threaded rod, so that the two arc-shaped cleaning plates move close to each other, and the clay adhering to the inner concave surface of the arc-shaped bucket plate can be squeezed out along the inclined surface. At the same time, under the cooperation of the operator controlling the excavator body to make the excavator shake, the clay can be cleaned. When the two side bucket plates are in close contact with the arc-shaped bucket plate, and the clay adheres to the two arc-shaped cleaning plates, the operator can control the first motor to rotate the bidirectional threaded rod reciprocatingly, so that the two side bucket plates move close to and away from each other, and the two arc-shaped cleaning plates reciprocate on the inner concave surface of the arc-shaped bucket plate, so that the clay is loose. At the same time, under the cooperation of the operator controlling the excavator body to make the excavator shake, the clay adhering to the excavator can be cleaned. The positioning block is arranged in the mounting groove and movably arranged outside the guide rod. When the clay adhering to the excavator is cleaned, the electric push rod can be used to push the positioning block to move, so that the abutment plate abuts against the mounting block. At this time, the vibration motor can be controlled to be turned on, the vibration motor vibrates to drive the mounting block to vibrate, so that the excavator resonates, and the clay adhering to the excavator is cleaned.

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