A method for quickly installing retaining plates using an excavator

Abstract

The invention discloses a method for quickly installing a retaining plate by using an excavator. The method adopts an excavator with an automatic loading and unloading bucket function, and the excavator bucket has been removed. An "n"-shaped grab bucket that can be automatically loaded and unloaded is installed at the bucket installation position of the excavator. The retaining plate is pre-set with a hook groove or a lifting ring made of bent steel bars. The excavator controls the grab bucket at the front end to move to the top of the retaining plate, slowly lowers it to lift the retaining plate, and then controls the excavator to move to the installation position, releases the hook lock, and lifts the boom to retract it. The hoisting operation is cyclical to complete the installation of the subsequent retaining plate. The retaining plate is conveniently connected and has a stable structure by using a hook added to the top of the grab bucket or a barb added to the side. By using an excavator with a grab bucket, the retaining plate is moved and installed, and there is no need for personnel to stand below to move and position the installation, thereby improving the safety factor of the construction. By using an "n"-shaped grab bucket, the grab bucket is used to hook and hang the retaining plate, and the excavator controls the installation, thereby improving the installation accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of civil engineering, and in particular to a method for quickly installing a retaining plate by using an excavator. Background Art

[0002] Retaining panels are used in slope retaining structures such as pile-sheet walls and rib-column retaining walls. They are combined with piles or rib columns to bear the soil pressure of the slope soil. At present, the commonly used retaining panel form is a rectangular prefabricated reinforced concrete component with bending and shear reinforcements inside. In the installation and construction of retaining panels, the conventional method is to lift them with a crane using a wire rope or a sling, and manually stand at the bottom of the foundation pit to move and position them for installation. This is time-consuming and dangerous, and it is difficult to control the upper and lower lines. Summary of the invention

[0003] In view of the defects of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a method for quickly installing retaining plates using an excavator without the need for personnel to stand underneath to move, position and install, thereby improving the safety factor of construction and having high installation accuracy.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solution: a method for quickly installing a retaining plate using an excavator, comprising the following steps:

[0005] Step 1: Plan a prefabrication site with a flat ground and foundation bearing capacity sufficient for retaining wall placement;

[0006] Step 2: Prefabricate the retaining board. Steel bars are arranged inside the retaining board. During the casting and production of the retaining board, hook grooves inclined upward from the outside to the inside are reserved on the front and back sides of the retaining board. The finished retaining board is stacked at the prefabrication site.

[0007] Step 3: Use an excavator with automatic loading and unloading bucket function, and the excavator bucket has been removed, and install an "n"-shaped grab bucket that can be automatically loaded and unloaded at the bucket installation position of the excavator; the inner sides of the front baffle and the rear baffle of the grab bucket are both provided with barbs, and the suspended ends of the barbs are inclined upward relative to the fixed ends; the rear baffle is hinged to the top of the grab bucket, and the hinge shaft can be controlled by the driving member to flip the rear baffle backward, open and return to its original position;

[0008] Step 4: hoist the retaining plate by the excavator; the excavator controls the front grab to move to the top of the retaining plate, and the barb of the grab is aligned with the hook groove of the retaining plate. After the driving part controls the rear baffle to expand outward, the grab is slowly lowered down to the bottom of the hook groove, and the grab is controlled to be retracted inward, and then lifted up, so that the barb on the front side is hooked into the hook groove; then the driving part controls the rear baffle to be retracted inward, so that the barb on the rear side is automatically hooked into the hook groove;

[0009] Step 5: The excavator controls the grab bucket to lift up, hoist the retaining plate to the designated installation position, controls the grab bucket to move down, releases the hook lock, and lifts the boom to retract;

[0010] Step 6: Circulate the lifting operation to complete the installation of the subsequent retaining plate;

[0011] Step 7: After the retaining board is installed, the front and back hook grooves are opened to form through holes as drainage holes for the retaining board.

[0012] Preferably, in step 2, the bottom formwork of the retaining board adopts a 6mm iron plate, the formwork is installed and reinforced around the bottom formwork, and a steel box matching the inclination of the barb is welded and installed in the middle of the front and rear formworks. After the steel bars are installed in the formwork, concrete is poured and cured. After reaching the required strength, the formwork is removed to form a retaining board with hook grooves on the front and rear sides.

[0013] Preferably, the steel box is a triangular steel box.

[0014] A method for quickly installing a retaining plate using an excavator comprises the following steps:

[0015] Step 1: Plan a prefabrication site with a flat ground and foundation bearing capacity sufficient for retaining wall placement;

[0016] Step 2: Prefabricate the retaining plate, configure steel bars inside the retaining plate, and during the casting of the retaining plate, a lifting ring made of bent steel bars is pre-embedded on the top, and an installation groove for inserting the lifting ring is provided at the corresponding lifting ring position at the bottom of the retaining plate;

[0017] Step 3: Use an excavator with an automatic loading and unloading bucket function, and the bucket of the excavator has been removed, and install an "n"-shaped grab bucket that can be automatically loaded and unloaded at the bucket installation position of the excavator; the top inner side surface of the grab bucket is provided with a hook, and the hook is placed at the center position of the top of the grab bucket;

[0018] Step 4: Use the excavator to hoist the retaining plate; the excavator controls the grab bucket at the front end to move to the top of the retaining plate, and the hook of the grab bucket is aligned with the lifting ring on the top of the retaining plate. After alignment, the grab bucket is slowly lowered down. After it is placed at the lifting ring position, the grab bucket is controlled to be retracted inwards, and then lifted up so that the hook hooks the lifting ring;

[0019] Step 5: The excavator controls the grab bucket to lift up, hoist the retaining plate to the designated installation position, controls the grab bucket to move down, releases the hook lock, and lifts the boom to retract;

[0020] Step 6: Repeat the lifting operation to complete the installation of subsequent retaining plates. When lifting the second layer, the excavator controls the grab bucket to a precise position so that when the retaining plate falls, the lifting ring of the first layer of retaining plate is inserted into the installation groove reserved at the bottom of the second layer of retaining plate.

[0021] Preferably, in step 2, a channel steel box is welded in the middle of the bottom formwork of the retaining board, and after the formwork is installed and reinforced around the bottom formwork, steel bars and pre-embedded top lifting rings are installed in the formwork, concrete is poured and cured, and after reaching sufficient strength, the formwork is removed to form a retaining board with an installation channel at the bottom and a lifting ring at the top.

[0022] Beneficial effects of the present invention:

[0023] 1) Using the hook groove reserved before the retaining wall is cast or the lifting ring added to the steel frame, in conjunction with the hook added to the top of the grab bucket or the barb added to the side, the connection is convenient, the production is simple, and the structure is stable;

[0024] 2) The retaining plate can be moved and installed by using an excavator with a grab bucket, and the excavator can be operated and positioned at any time, without the need for personnel to stand underneath to move and position the retaining plate, thus improving the safety factor of the construction;

[0025] 3) An "N"-shaped grab is used, and the retaining plate is hooked and hoisted by the hook on the inner side of the grab. The grab is directly located on both sides of the retaining plate and is controlled and installed by the excavator, which improves the installation accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of an excavator;

[0027] Figure 2 This is a working diagram of an excavator;

[0028] Figure 3 The schematic diagram of the grab bucket structure using side hanging is shown in FIG.

[0029] Figure 4 for Figure 3 Right view of;

[0030] Figure 5 The schematic diagram of the retaining wall structure using side hanging is shown in FIG.

[0031] Figure 6 The schematic diagram of the grab bucket structure using top hanging is shown in FIG.

[0032] Figure 7 for Figure 6 Right view of;

[0033] Figure 8 The schematic diagram of the retaining wall structure using top hanging is shown in FIG.

[0034] Fig. 9 This is the installation diagram of the retaining wall using top hanging;

[0035] In the figure: 1-excavator, 2-grab bucket, 2a-front baffle, 2b-rear baffle, 2c-barb, 2d-hook, 3-retaining plate, 3a-lifting ring, 3b-installation channel, 3c-hook groove. DETAILED DESCRIPTION

[0036] In order to better understand the improvements made by the present invention relative to the prior art, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0037] like Figure 1 As shown in FIG. 2 , a method for quickly installing a retaining plate using an excavator is described, which includes hoisting the side of the retaining plate 3 and hoisting the top of the retaining plate 3 .

[0038] The hoisting of the side of the retaining plate 3 includes the following steps:

[0039] Step 1: Plan a prefabrication site with a flat ground and foundation bearing capacity sufficient for placement of the retaining plate 3.

[0040] Step 2: If Figure 5 As shown, the retaining plate 3 is prefabricated, and steel bars are arranged inside the retaining plate 3. During the casting of the retaining plate 3, hook grooves 3c inclined upward from outside to inside are reserved on the front and rear sides of the retaining plate 3. The hook grooves 3c are composed of two upper and lower inclined surfaces, and both inclined surfaces are inclined upward from outside to inside. To ensure the stability during hoisting, the inclination of the upper inclined surface is consistent with the inclination of the hook 2c. The finished retaining plate 3 is stacked at the prefabrication site.

[0041] The bottom formwork of the retaining plate 3 is made of 6mm iron plate, and the formwork is installed and reinforced around the bottom formwork. In the production, in order to reserve the hook groove 3c, a triangular steel box matching the slope of the barb 2c is welded and installed in the middle of the front and rear formworks. After the steel bars are installed in the formwork, concrete is poured and cured. After reaching the strength, the formwork is removed to form the retaining plate 3 with hook grooves 3c on the front and rear sides.

[0042] Step 3: Use an excavator 1 with an automatic loading and unloading bucket function, and the bucket of the excavator 1 has been removed, and install an "n"-shaped grab bucket 2 that can be automatically loaded and unloaded on the excavator 1 at the bucket installation position. Figure 3 As shown in FIG. 4 , the front baffle 2a and the rear baffle 2b of the grab bucket 2 are both provided with barbs 2c on the inner side, and the suspended ends of the barbs 2c are tilted upward relative to the fixed ends. The rear baffle 2b is hinged to the top of the grab bucket 2, and the hinge axis can be controlled by the driving member to flip the rear baffle 2b backward, open and return to its original position.

[0043] Step 4: hoist the retaining plate 3 by the excavator 1. The excavator 1 controls the grab 2 at the front end to move above the retaining plate 3, and the barb 2c of the grab 2 is aligned with the hook groove 3c of the retaining plate 3. After the driving part controls the rear baffle 2b to expand outward, the grab 2 is slowly lowered down to the bottom of the hook groove 3c, and the grab 2 is controlled to be retracted inward and then lifted up, so that the barb 2c on the front side is hooked into the hook groove 3c. The driving part then controls the rear baffle 2b to be retracted inward, so that the barb 2c on the rear side is automatically hooked into the hook groove 3c.

[0044] Step 5: The excavator 1 controls the grab 2 to lift up, hoist the retaining plate 3 to the designated installation position, controls the grab 2 to move down, releases the hook lock, and lifts the boom to retract.

[0045] Step 6: Repeat the lifting operation to complete the installation of the subsequent retaining plate 3.

[0046] Step 7: After the retaining plate 3 is installed, the hook groove 3c is opened front and back to form a through hole as a drainage hole of the retaining plate 3.

[0047] The hoisting of the top of the retaining plate 3 includes the following steps:

[0048] Step 1: Plan a prefabrication site with a flat ground and foundation bearing capacity sufficient for placement of the retaining plate 3.

[0049] Step 2: If Figure 8 As shown, the retaining plate 3 is prefabricated, and steel bars are arranged inside the retaining plate 3. During the casting of the retaining plate 3, a lifting ring 3a made of bent steel bars is pre-buried on the top, and a mounting groove 3b for inserting the lifting ring 3a is provided at the position corresponding to the lifting ring 3a at the bottom of the retaining plate 3, so as to facilitate the upper and lower stacking of the retaining plates 3. At the same time, a drainage hole is provided in the middle of each retaining plate 3.

[0050] During the production, in order to reserve the installation groove 3b, a channel steel box is welded in the middle of the bottom mold of the retaining plate 3. After the mold is installed and reinforced around the bottom mold, the steel bars and the pre-embedded top hanging ring 3a are installed in the mold, and the concrete is poured and cured. After reaching the strength, the mold is removed to form the retaining plate 3 with the installation groove 3b at the bottom and the hanging ring 3a at the top.

[0051] Step 3: Use an excavator 1 with an automatic loading and unloading bucket function, and the bucket of the excavator 1 has been removed, and install an "n"-shaped grab bucket 2 that can be automatically loaded and unloaded on the excavator 1 at the bucket installation position. Figure 6 As shown in FIG. 7 , a hook 2d is provided on the inner side surface of the top of the grab bucket 2, and the hook 2d is placed at the center position of the top of the grab bucket 2.

[0052] Step 4: hoist the retaining plate 3 by the excavator 1. The excavator 1 controls the grab bucket 2 at the front end to move to the top of the retaining plate 3, and the hook 2d of the grab bucket 2 is aligned with the lifting ring 3a at the top of the retaining plate 3. After alignment, the grab bucket 2 is slowly lowered down, and after being placed at the position of the lifting ring 3a, the grab bucket 2 is controlled to be retracted inwards, and then lifted up, so that the hook 2d hooks the lifting ring 3a.

[0053] Step 5: The excavator 1 controls the grab 2 to lift up, hoist the retaining plate 3 to the designated installation position, controls the grab 2 to move down, releases the hook lock, and lifts the boom to retract.

[0054] Step 6: Repeat the hoisting operation to complete the installation of the subsequent retaining plate 3. Fig. 9As shown, when the second layer is hoisted, the excavator 1 controls the grab bucket 2 to a precise position so that when the retaining plate 3 falls, the lifting ring 3a of the first layer of retaining plate 3 is inserted into the installation groove 3b reserved at the bottom of the second layer of retaining plate 3.

[0055] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for quickly installing a retaining plate using an excavator, characterized in that: The following steps are involved: Step 1: Plan a prefabrication site with a flat ground and foundation bearing capacity sufficient for placement of the retaining plate (3); Step 2: prefabricate the retaining plate (3), wherein steel bars are arranged inside the retaining plate (3), and during the casting and manufacturing of the retaining plate (3), hook grooves (3c) inclined upward from the outside to the inside are reserved on the front and rear sides of the retaining plate (3); the manufactured retaining plate (3) is stacked at the prefabrication site; Step 3: using an excavator (1) with an automatic loading and unloading bucket function, and the bucket of the excavator (1) has been removed, and installing an "n"-shaped grab bucket (2) capable of automatic loading and unloading at the bucket installation position of the excavator (1); the inner side surfaces of the front baffle (2a) and the rear baffle (2b) of the grab bucket (2) are both provided with barbs (2c), and the suspended ends of the barbs (2c) are inclined upward relative to the fixed ends; the rear baffle (2b) is hinged to the top of the grab bucket (2), and the hinge axis can be controlled by a driving member to flip the rear baffle (2b) backward, open, and return to its original position; Step 4: hoisting the retaining plate (3) by the excavator (1); the excavator (1) controls the grab bucket (2) at the front end to move to the top of the retaining plate (3), the barb (2c) of the grab bucket (2) is aligned with the hook groove (3c) of the retaining plate (3), the driving component controls the rear baffle (2b) to expand outwards, and then the grab bucket (2) is slowly lowered down to the bottom of the hook groove (3c), and the grab bucket (2) is controlled to be retracted inwards and then lifted up, so that the barb (2c) on the front side is hooked into the hook groove (3c); and then the driving component controls the rear baffle (2b) to be retracted inwards, so that the barb (2c) on the rear side is automatically hooked into the hook groove (3c); Step 5: The excavator (1) controls the grab bucket (2) to lift up, hoist the retaining plate (3) to the designated installation position, controls the grab bucket (2) to move down, releases the hook lock, and lifts up the boom to retract; Step 6: Circulate the lifting operation to complete the installation of the subsequent retaining plate (3); Step 7: After the retaining plate (3) is installed, the hook groove (3c) is opened front and back to form a through hole as a drainage hole of the retaining plate (3).

2. The method for quickly installing a retaining plate using an excavator according to claim 1, characterized in that: In step 2, the bottom formwork of the retaining plate (3) is made of a 6mm iron plate, and the formwork is installed and reinforced around the bottom formwork. A steel box matching the slope of the barb (2c) is welded and installed in the middle of the front and rear formworks. After the steel bars are installed in the formworks, concrete is poured and cured. After reaching the required strength, the formwork is removed to form a retaining plate (3) with hook grooves (3c) on the front and rear sides.

3. The method for quickly installing a retaining plate using an excavator according to claim 2, characterized in that: The hook groove (3c) is composed of two upper and lower inclined surfaces, both of which are inclined upward from the outside to the inside, and the inclination of the upper inclined surface is consistent with the inclination of the barb (2c).

4. A method for quickly installing a retaining plate using an excavator, characterized in that: The following steps are involved: Step 1: Plan a prefabrication site with a flat ground and foundation bearing capacity sufficient for placement of the retaining plate (3); Step 2: prefabricate the retaining plate (3), wherein steel bars are arranged inside the retaining plate (3), and during the casting and manufacturing of the retaining plate (3), a lifting ring (3a) made of bent steel bars is pre-buried at the top, and a mounting groove (3b) for inserting the lifting ring (3a) is provided at the bottom of the retaining plate (3) at a position corresponding to the lifting ring (3a); Step 3: using an excavator (1) with an automatic loading and unloading bucket function, and the bucket of the excavator (1) has been removed, and installing an "n"-shaped grab bucket (2) capable of automatic loading and unloading at the bucket installation position of the excavator (1); a hook (2d) is provided on the inner side surface of the top of the grab bucket (2), and the hook (2d) is placed at the center position of the top of the grab bucket (2); Step 4: hoisting the retaining plate (3) by the excavator (1); the excavator (1) controls the grab bucket (2) at the front end to move to the top of the retaining plate (3), and the hook (2d) of the grab bucket (2) is aligned with the lifting ring (3a) at the top of the retaining plate (3). After the alignment, the grab bucket (2) is slowly lowered downwards, and after being placed at the position of the lifting ring (3a), the grab bucket (2) is controlled to be retracted inwards, and then lifted up, so that the hook (2d) hooks the lifting ring (3a); Step 5: The excavator (1) controls the grab bucket (2) to lift up, hoist the retaining plate (3) to the designated installation position, controls the grab bucket (2) to move down, releases the hook lock, and lifts up the boom to retract; Step 6: Circulate the lifting operation to complete the installation of the subsequent retaining plate (3). When lifting the second layer, the excavator (1) controls the grab bucket (2) to a precise position so that when the retaining plate (3) falls, the lifting ring (3a) of the first layer of retaining plate (3) is inserted into the installation groove (3b) reserved at the bottom of the second layer of retaining plate (3).

5. A method for quickly installing a retaining plate using an excavator according to claim 4, characterized in that: In step 2, a channel steel box is welded in the middle of the bottom mold of the retaining plate (3), and after the mold is installed around the bottom mold and reinforced, steel bars and a hanging ring (3a) at the top are installed in the mold, concrete is poured and cured, and after reaching the required strength, the mold is removed to form a retaining plate (3) with an installation channel (3b) at the bottom and a hanging ring (3a) at the top.

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