Pulling-out device for precast concrete supporting wall

Abstract

The utility model belongs to the technical field of concrete supporting, and particularly discloses a pulling-out device for a precast concrete supporting wall, which is used for solving the problem that a steel sheet pile falls off in the pulling-out process due to the fact that only a vertically corresponding clamping mechanism is adopted when the steel sheet pile is pulled out. Comprising a base connected with vibration equipment, and vertical plates are installed at the bottoms of the two sides of the base; therefore, stable clamping in the pulling-out process of the steel sheet pile can be achieved through the double-side lifting and clamping assemblies capable of applying force in multiple directions, the steel sheet pile is vertically and stably pulled out upwards under the resultant force in the pulling-out process, and the problem that the steel sheet pile cannot be pulled out smoothly due to the fact that the steel sheet pile is clamped only through a vertically-corresponding clamping mechanism and slips is solved; the stable touch assembly can be replaced in the steel sheet pile pulling-out operation in a detachable quick-wear part mode, and the phenomenon that stable clamping is difficult due to the fact that the stable touch assembly is damaged in the continuous steel sheet pile pulling-out operation process is avoided; and the steel sheet piles in the concrete supporting wall can be effectively, stably and effectively pulled out through matched use of the steel sheet pile pulling device and the steel sheet pile pulling device.

Description

Technical Field

[0001] This utility model relates to the field of concrete support technology, and in particular to a pull-out device for precast concrete retaining walls. Background Technology

[0002] Concrete retaining walls are a type of wall used for support structures, in which steel sheet piles are the steel structural components;

[0003] When backfilling the foundation pit, the sheet piles need to be extracted for repair and reuse. Before extraction, the extraction sequence, extraction time, and pile hole treatment method should be studied. To overcome the resistance of the sheet piles, the extraction methods include static extraction, vibratory extraction, and impact extraction, depending on the extraction machinery used. The vibratory extraction process requires the use of vibratory pile driving machinery.

[0004] Referring to the existing technology of a rapid extraction device for steel sheet pile construction with patent number CN217536950U, in order to ensure stable extraction, only vertically corresponding wear-resistant and anti-detachment plates are used to clamp the steel sheet pile. This cannot guarantee the stable extraction of the steel sheet pile and is prone to falling off during the extraction process.

[0005] To address the aforementioned technical shortcomings, a solution is proposed. Utility Model Content

[0006] The purpose of this utility model is to provide a pull-out device for precast concrete retaining walls to solve the problem of sheet piles falling off during the pull-out process caused by using only vertically corresponding clamping mechanisms.

[0007] The objective of this utility model can be achieved through the following technical solution: a pull-out device for precast concrete retaining walls, comprising a base connected to a vibration device, wherein upright plates are installed on both sides of the bottom of the base, and a double-sided lifting clamp assembly for clamping and lifting steel sheet piles is installed on the bottom of each pair of upright plates, wherein the double-sided lifting clamp assembly includes a clamping plate rotatably connected to the bottom of the upright plate, wherein a semi-circular annular groove is provided at the end of the clamping plate away from the rotatable connection, and a stabilizing contact assembly for stable contact with the steel sheet pile is installed on the clamping plate through the semi-circular annular groove; a rotating block is fixedly connected to the outer side of the lower end of the clamping plate, and a pull plate facing upward is connected to the outer end of the rotating block through a pin, wherein a pull rod hinged to a cylinder is installed on the upper end of the pull plate.

[0008] Preferably, the stabilizing component includes a stabilizing plate and a contact rod. The stabilizing plate is embedded in the end of the clamping plate, and a groove is formed on the stabilizing plate. The contact rod is arranged around the groove, and its outer end extends to the outside of the outer ring side.

[0009] Preferably, the stable contact plate is provided with an arc-shaped plate in the middle of the slot, the plurality of contact rods are connected with the arc-shaped plate, and the two ends of the contact rod are abutted with the clamping plate.

[0010] Preferably, the bottom of the clamping plate is provided with a swing hole, the clamping plate is provided with a rotating rod at the bottom of the swing hole, and the bottom of the vertical plate is provided with a sleeve connected with the rotating rod.

[0011] Preferably, the bottom of the clamping plate is provided with a swing hole, the clamping plate is provided with a rotating rod at the bottom of the swing hole, and the bottom of the vertical plate is provided with a sleeve connected with the rotating rod.

[0012] Preferably, the bottom of the clamping plate is provided with a swing hole, the clamping plate is provided with a rotating rod at the bottom of the swing hole, and the bottom of the vertical plate is provided with a sleeve connected with the rotating rod.

[0013] Preferably, the clamping plate is in the shape of "L", and the lower end of the clamping plate is connected with the lower end of the outer ring side of the pin rod.

[0014] The utility model discloses beneficial effect:

[0015] (1) the utility model discloses the preinstallation and the setting of vertical pull -up cylinder of vibration equipment with the function of lifting, make after the contact rod and the steel sheet pile abut contact, with the vertical upward pull -up force constitute first clamping force, with the symmetrical clamping plate mutual approach constitute second clamping force to form the effective clamping of steel sheet pile together, avoid the situation of falling off in the process of steel sheet pile pulling out, that is, can effectively realize the stable clamping of steel sheet pile through the multi -directional force mode, avoid the problem of smooth pulling out caused by the slipping of only using the vertical corresponding clamping mechanism clamping steel sheet pile.

[0016] (2) the replacement of stable contact subassembly in the steel sheet pile pulling out operation is realized through the detachable vulnerable part mode, so as to avoid the difficult stable clamping phenomenon caused by the damage of stable contact subassembly in the continuous steel sheet pile pulling out operation. ACCURATE DRAWINGS

[0017] The utility model makes further explanation in combination with the drawings;

[0018] Figure 1 It is the structure perspective drawing of the whole utility model;

[0019] Figure 2 It is the bottom structure schematic view of the utility model;

[0020] Figure 3 It is the structure split schematic view of the double -sided lifting clamping subassembly of the utility model;

[0021] Figure 4 It is the structure split schematic view of the stable contact subassembly of the utility model;

[0022] Figure 5 Figure 1 is a force diagram of the steel sheet pile of the utility model.

[0023] Legend: 1, base; 2, vertical plate; 3, clamping plate; 4, shaft coupling; 5, rotating block; 6, pull plate; 7, pull rod; 8, swing hole; 9, fitting disc; 10, pin rod; 11, stable contact plate; 12, rotating rod; 13, semicircular plate; 14, sleeve; 15, semicircular ring groove; 16, contact rod; 17, arc plate; 18, embedding groove. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Embodiment one: this embodiment is used to solve the problem that only vertical corresponding clamping mechanism is used when the steel sheet pile is pulled out, resulting in falling off in the pulling-out process.

[0026] Please refer to Figure 1 - Figure 5 As shown in the figure, the embodiment is a pulling-out device for prefabricated concrete supporting wall, which comprises a base 1 connected with a vibrating device, vertical plates 2 installed on both sides of the bottom of the base 1, a double-side lifting and clamping assembly for clamping and lifting the steel sheet pile installed on the bottom of each vertical plate 2, the double-side lifting and clamping assembly comprising a clamping plate 3 rotationally connected with the bottom of the vertical plate 2, a semicircular ring groove 15 opened at the end of the clamping plate 3 away from the rotationally connected part, and a stable contact assembly installed on the clamping plate 3 through the semicircular ring groove 15 and in stable contact with the steel sheet pile; a rotating block 5 fixedly connected with the outer side of the lower end of the clamping plate 3, a pull plate 6 connected with the outer end of the rotating block 5 through a pin rod 10 and facing upward, and a pull rod 7 installed on the upper end of the pull plate 6 and hinged with a pneumatic cylinder;

[0027] A swing hole 8 is opened at the bottom of the clamping plate 3, a rotating rod 12 is installed on the bottom of the clamping plate 3 through the swing hole 8, a sleeve 14 is installed on the bottom of the vertical plate 2 and sleeved with the rotating rod 12, a semicircular plate 13 is installed on the bottom of the clamping plate 3 close to the rotating rod 12, a fitting disc 9 is installed on the outer side of the rotating block 5 and connected with the semicircular plate 13, after the vertical plate 2 is subjected to the vertical upward tension of the base 1, the stable contact assembly is vertically lifted as a whole, and then the upward tension of the pneumatic cylinder and the pull rod 7 is supplemented to drive the clamping plate 3 to complete deflection, at this time, the end of the clamping plate 3 is in close abutting contact with the steel sheet pile, and finally the stable clamping function is achieved;

[0028] A coupling rod 4 is installed in the middle of the upper end of the base 1. A pin hole for rotatably connecting with the vibrating equipment is opened in the middle of the upper end of the coupling rod 4. The pull plate 6 has an "L" shaped structure, and the lower end of the pull plate 6 is connected to the lower end of the outer ring side of the pin rod 10.

[0029] Please see Figure 1 - Figure 3 As shown, before the steel sheet pile is pulled out of the concrete retaining wall, the retaining wall corresponding to the top of the steel sheet pile is excavated and the steel sheet pile is exposed. Then, the vibrating equipment with lifting function is loaded onto the top of the entire retaining wall, and at the same time, the tie rod 7 is rotated and installed to the cylinder extension end hinged at the bottom of the cylinder. At this time, the clamping plate 3 corresponds to both sides of the steel sheet pile and is close to the clamping state.

[0030] Pulling out: Activate the cylinder, which drives the pull plate 6 to rotate via the pull rod 7. During the swinging of the pull plate 6, the clamping plate 3 can be driven to swing via the pin 10 until the top of the clamping plate 3 is in close contact with the outside of the sheet pile. Then, start the vibration equipment and simultaneously use the lifting equipment to pull out the sheet pile. After the contact rod 16 comes into contact with the sheet pile, the vertical upward lifting force forms the first clamping force, and the symmetrical clamping plates 3 move closer together to form the second clamping force, thus forming an effective clamping of the sheet pile and preventing it from falling off during the extraction process.

[0031] In summary, when extracting sheet piles from concrete retaining walls, this extraction device can effectively achieve stable clamping of the sheet piles through multi-directional force application, avoiding the problem of slippage and inability to extract the sheet piles when only vertical clamping mechanisms are used.

[0032] Example 2: The difference between this example and Example 1 is that the function of ensuring stable extraction of steel sheet piles is achieved by setting detachable and replaceable vulnerable parts.

[0033] Please see Figure 1 , Figure 3 - Figure 4 As shown, the pull-out device for precast concrete retaining wall in this embodiment includes a stabilizing contact assembly comprising a stabilizing contact plate 11 and a contact rod 16. The contact rod 16 is made of hard rubber and has anti-slip and wear-resistant functions. The stabilizing contact plate 11 is embedded in the end of the clamping plate 3. A groove 18 is provided on the stabilizing contact plate 11. The contact rod 16 is arranged around the groove 18 and the outer end of the outer ring extends to the outside. An arc-shaped plate 17 is installed in the middle of the groove 18 through the stabilizing contact plate 11. Several contact rods 16 are connected to the arc-shaped plate 17, and both ends of the contact rod 16 abut against the clamping plate 3. Specifically, the stabilizing contact plate 11 is fixedly connected to the clamping plate 3 by pins at both ends. The specific pins are not shown in the figure. Those skilled in the art can make conventional settings using existing technology, which will not be described in detail here.

[0034] Please refer to Figure 3 - Figure 4 As shown in the figure, the stable contact assembly can be disassembled, and the specific operation is to stably connect through the pin hole at both ends of the stable contact plate 11. When the pull-out operation is implemented multiple times, the contact rod 16 is damaged and loses the anti-skid clamping function. At this time, remove the pin, remove the stable contact plate 11 and the contact rod 16, and complete the replacement of the contact rod 16. At this time, the new contact rod 16 after replacement has the clamping anti-skid anti-falling effect in advance when it contacts the steel sheet pile.

[0035] In this process, the replacement of the stable contact assembly in the steel sheet pile pulling-out operation can be realized by means of detachable and easily damaged parts, so as to facilitate the continuous steel sheet pile pulling-out operation process caused by the difficulty of stable clamping due to the damage of the stable contact assembly.

[0036] Combining example one and example two, the stable clamping of the steel sheet pile during the pulling-out process can be realized by using the bidirectional force applying double-side lifting and clamping assembly, so that the steel sheet pile is stably pulled out vertically upward during the pulling-out process, avoiding the problem that the steel sheet pile cannot be smoothly pulled out due to slipping caused by only using the vertical corresponding clamping mechanism. The replacement of the stable contact assembly in the steel sheet pile pulling-out operation can be realized by means of detachable and easily damaged parts, so as to avoid the difficulty of stable clamping caused by the damage of the stable contact assembly during the continuous steel sheet pile pulling-out operation process. The mutual use of the two can effectively provide stable and effective pulling-out of the steel sheet pile in the concrete support wall.

[0037] The process and principle of the utility model:

[0038] Step one: before the pulling-out operation, the support wall corresponding to the top of the steel sheet pile is excavated and the steel sheet pile is exposed, then the lifting vibration equipment is loaded above the entire support wall, and at the same time, the pull rod 7 is rotatably installed at the telescopic end of the cylinder hinge installed at the bottom of the cylinder, and at this time, the clamping plate 3 is correspondingly close to the two sides of the steel sheet pile and approaches the clamping state.

[0039] Step two: start the above-mentioned cylinder, the cylinder drives the pull plate 6 to complete the rotation through the pull rod 7, and in the process of swinging of the pull plate 6, the clamping plate 3 can be driven to complete the swinging through the pin rod 10, until the top end of the clamping plate 3 tightly abuts against the outside of the steel sheet pile, then start the vibration equipment and simultaneously use the lifting equipment to pull out the steel sheet pile, and after the contact rod 16 abuts against the steel sheet pile, the vertical upward pulling force constitutes the first clamping force, and the symmetrical clamping plates 3 approach each other to constitute the second clamping force, thereby forming effective clamping of the steel sheet pile.

[0040] Step three: when the multiple pull out operation is implemented, the touch rod 16 is damaged and loses the anti-skid clamping function; at this time, the pin is removed, the stable touch plate 11 and the touch rod 16 are taken down, the replacement of the touch rod 16 is completed, and the new touch rod 16 after replacement has the clamping anti-skid anti-falling effect when contacting with the steel sheet pile.

[0041] The above is only an example and description of the structure of the utility model, and those skilled in the art can make various modifications or supplements or adopt similar ways to replace the described specific embodiments, as long as the modifications or supplements do not deviate from the structure of the utility model or exceed the range defined by the present claims, and should belong to the protection range of the utility model.

Claims

1. A pulling-out device for precast concrete retaining walls, comprising a base (1) associated with a vibrating device, characterised in that, Both sides of the base (1) are provided with vertical plates (2), and the bottom of each vertical plate (2) is provided with a double-side lifting and clamping assembly for clamping and lifting the steel sheet pile, which comprises a clamping plate (3) rotatably connected to the bottom of the vertical plate (2), and a stable contact assembly is arranged on the clamping plate (3) through a semicircular groove (15) formed at the end of the clamping plate (3) away from the rotatable connection; a rotating block (5) is fixedly connected to the outer side of the lower end of the clamping plate (3), and a pull plate (6) facing upwards is connected to the outer end of the rotating block (5) through a pin rod (10), and a pull rod (7) hinged to the air cylinder is arranged on the upper end of the pull plate (6).

2. A pull-out device for precast concrete retaining walls according to claim 1, characterised in that, The stable contact assembly comprises a stable contact plate (11) and a contact rod (16), the stable contact plate (11) is embedded in the end of the clamping plate (3), the stable contact plate (11) is provided with an embedding groove (18), and the contact rod (16) is arranged in the embedding groove (18) and extends to the outside through the outer end of the outer ring side.

3. A pull-out device for precast concrete retaining walls according to claim 2, characterised in that, The stable contact plate (11) is provided with an arc-shaped plate (17) through the middle part of the embedding groove (18), a plurality of contact rods (16) are connected to the arc-shaped plate (17), and both ends of the contact rod (16) abut against the clamping plate (3).

4. The pull-out device for precast concrete retaining walls of claim 1, wherein, The bottom of the clamping plate (3) is provided with a swing hole (8), and a rotating rod (12) is arranged on the bottom of the swing hole (8).

5. A pull-out device for precast concrete retaining walls according to claim 4, characterised in that, The bottom of the clamping plate (3) is provided with a swing hole (8), and a rotating rod (12) is arranged on the bottom of the swing hole (8).

6. The pull-out device for precast concrete retaining walls of claim 1, wherein, The bottom of the clamping plate (3) is provided with a swing hole (8), and a rotating rod (12) is arranged on the bottom of the swing hole (8).

7. The pull-out device for precast concrete retaining walls of claim 1, wherein, The bottom of the clamping plate (3) is provided with a swing hole (8), and a rotating rod (12) is arranged on the bottom of the swing hole (8). The bottom of the clamping plate (3) is provided with a swing hole (8), and a rotating rod (12) is arranged on the bottom of the swing hole (8). The bottom of the clamping plate (3) is provided with a swing hole (8), and a rotating rod (12) is arranged on the bottom of the swing hole (8). The bottom of the clamping plate (3) is provided with a swing hole (8), and a rotating rod (12) is arranged on the bottom of the swing hole (8).

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