Fabricated open caisson sinking device

Abstract

The utility model discloses a fabricated open caisson sinking device, and relates to the technical field of open caisson construction. The assembly type open caisson sinking device comprises a sinking supporting seat, a sinking supporting column which extends upwards is hinged to the sinking supporting seat, the sinking supporting column is further connected with the sinking supporting seat through a luffing mechanism, the sinking supporting column is provided with a pressing mechanism used for pressing a segment ring, and the pressing mechanism is provided with a leveling mechanism used for leveling the segment ring. According to the assembly type open caisson sinking device, the installed pipe piece ring can be leveled through the leveling mechanism, the situation that the pipe piece ring inclines is avoided, and it is guaranteed that the sinking track of the pipe piece ring does not change; the pipe piece ring can be downwards pressed to sink by utilizing the pressing mechanism; the amplitude changing mechanism can drive the sinking supporting column to drive the downward pressing mechanism to incline in the direction away from the segment ring, so that the downward pressing mechanism is moved to the outer side of the segment ring, the subsequent segment ring can be directly hoisted in place on the installed segment ring, and then the construction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of open caisson construction, in particular to an assembled open caisson sinking device. BACKGROUND

[0002] As a commonly used structure in underground foundation construction, an open caisson is widely applied because it can form a stable structural foundation underground.

[0003] A traditional open caisson construction method relies on the gravity of the open caisson to overcome the frictional resistance of the well wall, so as to realize sinking to the design elevation. However, with the increasing requirements for construction efficiency and cost control, the traditional open caisson construction method has gradually failed to meet the needs of modern urban construction.

[0004] At present, an assembled open caisson construction method is commonly used, that is, prefabricated segments are assembled into rings on site, and then each segment ring is sequentially sunk to a specified position by using a sinking device. However, since part of the structure of the sinking device is located directly above the installed segment ring, the subsequent segment ring cannot be directly hoisted into position on the installed segment ring, resulting in complicated segment ring construction and reduced construction efficiency. CONTENT OF THE INVENTION

[0005] The application aims to provide an assembled open caisson sinking device to solve the problem of low segment ring construction efficiency.

[0006] The technical scheme adopted by the application to solve the technical problem is:

[0007] An assembled open caisson sinking device comprises a sinking support seat, an upwardly extending sinking support column is hinged to the sinking support seat, the sinking support column is further connected to the sinking support seat through an amplitude varying mechanism, a pressing mechanism for pressing the segment ring is arranged on the sinking support column, and a leveling mechanism for leveling the segment ring is arranged on the pressing mechanism.

[0008] Further, the amplitude varying mechanism comprises an inclined amplitude varying cylinder, the piston rod of the amplitude varying cylinder is hinged to the sinking support column, and the cylinder body of the amplitude varying cylinder is hinged to the sinking support seat.

[0009] Further, a amplitude varying support is fixed to one end of the sinking support seat away from the sinking support column, and the cylinder body of the amplitude varying cylinder is hinged to the amplitude varying support.

[0010] Further, the pressing mechanism comprises an equalizing beam and a pressing cylinder, the pressing cylinder is vertically arranged, the cylinder body of the pressing cylinder is fixedly connected to the sinking support column, the piston rod of the pressing cylinder is connected to the equalizing beam, and the leveling mechanism is arranged on the equalizing beam.

[0011] Further, the leveling mechanism comprises a leveling spreader connected with the equalizing beam through a lifting assembly; an upward extending leveling reinforcement is connected on the segment ring, a plurality of reinforcement cross arms are fixed on the leveling reinforcement in an axial direction, and the leveling spreader is used to support below the reinforcement cross arms during leveling.

[0012] Further, the lifting assembly comprises a fixed seat connected with the equalizing beam, a movable seat arranged below the fixed seat, and a lifting cylinder connected between the fixed seat and the movable seat, and the leveling spreader is connected with the movable seat.

[0013] Further, the bottom of the fixed seat is provided with a vertically arranged sliding groove, and the movable seat is slidingly fitted in the sliding groove.

[0014] Further, the leveling spreader is provided with a leveling spreader reinforcement groove for positioning the leveling reinforcement.

[0015] Further, the leveling mechanism comprises two, and the two leveling mechanisms are arranged on both sides of the equalizing beam.

[0016] The beneficial effects of the present application are as follows:

[0017] The assembled well sinking device provided by the embodiment of the present application can level the installed segment ring by using the leveling mechanism, avoid the segment ring from being inclined, and ensure that the sinking track of the segment ring does not change; the segment ring can be pressed downward by using the pressing mechanism to sink; the pressing mechanism can be moved to the outside of the segment ring by using the amplitude changing mechanism to drive the sinking support to tilt away from the segment ring, so that the subsequent segment ring can be directly hoisted and positioned on the installed segment ring, thereby improving the construction efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0019] Figure 1 is a state diagram of the assembled well during construction;

[0020] Figure 2 is a perspective view of the assembled well sinking device provided by the embodiment of the present application;

[0021] Figure 3 is a front view of the assembled well sinking device provided by the embodiment of the present application;

[0022] Figure 4 is a left view of Figure 3 ;

[0023] Figure 5 is a top view of Figure 3 .

[0024] Reference signs:

[0025] 1 - sinking device;

[0026] 11 - sinking support seat;

[0027] 12 - sinking support column;

[0028] 13 - luffing mechanism;

[0029] 14 - lowering mechanism;

[0030] 141 - equalizing beam;

[0031] 142 - lowering cylinder;

[0032] 15 - leveling mechanism;

[0033] 151 - leveling spreader;

[0034] 1511 - leveling spreader reinforcement slot;

[0035] 152 - fixed seat;

[0036] 153 - movable seat;

[0037] 154 - lifting cylinder;

[0038] 16 - luffing support;

[0039] 17 - sinking pivot;

[0040] 3 - leveling reinforcement;

[0041] 31 - reinforcement cross arm;

[0042] 4 - segment ring. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work under the premise that the embodiments in the present application are within the scope of protection of the present application. The embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0044] In the description of the present application, the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise specified, the above orientation description can be flexibly arranged in the actual application process under the condition of meeting the relative positional relationship shown in the drawings.

[0045] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] The fabricated caisson is assembled on site by prefabricated components, which has the advantages of fast construction speed, low cost, small environmental impact, etc. The segment caisson, as a kind of fabricated caisson, is composed of interconnected segment rings, which has higher flexibility and adaptability.

[0047] The construction method of the fabricated caisson is to assemble the prefabricated segments into rings at the construction site, and use the sinking device to sink each segment ring to the specified position in turn. However, since part of the structure of the sinking device is located directly above the installed segment ring, the subsequent segment ring cannot be directly hoisted into place on the installed segment ring, causing the segment ring construction to be cumbersome and reducing the construction efficiency. Moreover, when constructing in complex strata, the installed segment ring may be skewed, which may further change the sinking trajectory of the segment ring, and in severe cases, affect the construction quality of the caisson.

[0048] Based on this, referring to Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 The embodiment of the present application provides a fabricated caisson sinking device 1, which comprises a sinking support seat 11, an upwardly extending sinking support column 12 is hinged to the sinking support seat 11, the sinking support column 12 is further connected with the sinking support seat 11 through an amplitude changing mechanism 13, a pressing mechanism 14 for pressing the segment ring 4 is arranged on the sinking support column 12, and a leveling mechanism 15 for leveling the segment ring 4 is arranged on the pressing mechanism 14.

[0049] During construction, referring to Figure 1A plurality of sinking devices 1 are arranged around the sinking well construction position on the basis of the reinforced concrete foundation, wherein the sinking support base 11 is fixed on the foundation. For simplicity of the view, Figure 1 Only one sinking device 1 is shown in the figure, and it should be understood that a plurality of sinking devices 1 are uniformly arranged around the sinking well construction position. After the first segmental pipe ring 4 is hoisted and positioned at the construction position, the leveling mechanism 15 is used to level the pipe ring 4, and then the pressing mechanism 14 is used to press the pipe ring 4 downward to the specified position. Then, the amplitude changing mechanism 13 is used to drive the sinking support column 12 to tilt away from the pipe ring 4, so that the sinking support column 12 drives the pressing mechanism 14 to move to the outside of the pipe ring 4, so that there is no obstruction above the pipe ring 4. Then, the next segmental pipe ring 4 is directly hoisted and positioned on the already installed pipe ring 4, the amplitude changing mechanism 13 is used to drive the sinking support column 12 to move towards the pipe ring 4, so that the pressing mechanism 14 moves to the top of the pipe ring 4, the leveling mechanism 15 is used to level the pipe ring 4, and then the pressing mechanism 14 is used to press the pipe ring 4 downward to the specified position.

[0050] The assembled sinking well sinking device provided by the embodiment of the present application can level the installed pipe ring 4 by using the leveling mechanism 15, avoid the pipe ring 4 from being skewed, and ensure that the sinking trajectory of the pipe ring 4 does not change. The pressing mechanism 14 can be used to press the pipe ring 4 downward to sink it to the specified position. The amplitude changing mechanism 13 can be used to drive the sinking support column 12 to tilt away from the pipe ring 4 to move the pressing mechanism 14 to the outside of the pipe ring 4, so that the subsequent pipe ring 4 can be directly hoisted and positioned on the already installed pipe ring 4, without the need for complex operation procedures, thereby improving the construction efficiency.

[0051] In some embodiments, referring to Figure 2 、 Figure 3 、 Figure 4 、 Figure 5, the sinking support base 11 is a horizontally arranged rectangular frame structure, and the sinking support column 12 is vertically arranged. The lower end of the sinking support column 12 is connected with the sinking support base 11 through a horizontally arranged sinking rotating shaft 17, so that the sinking support column 12 can rotate around the sinking rotating shaft 17. The sinking rotating shaft 17 is perpendicular to the length direction of the sinking support base 11. The luffing mechanism 13 is used to drive the sinking support column 12 to rotate around the sinking rotating shaft 17. According to the structural form, the luffing mechanism 13 can include a trolley type luffing mechanism, a luffing boom type luffing mechanism or a telescopic boom type luffing mechanism, etc. For example, the luffing mechanism 13 can include a luffing cylinder arranged obliquely. The piston rod of the luffing cylinder is hinged with the sinking support column 12, and the cylinder body of the luffing cylinder is hinged with the sinking support base 11. In order to reduce the maximum stroke of the luffing cylinder and reduce the manufacturing cost, a luffing support 16 is fixed to the end of the sinking support base 11 away from the sinking support column 12, and the cylinder body of the luffing cylinder is hinged with the luffing support 16. The luffing cylinder can include a pneumatic cylinder or a hydraulic cylinder. Correspondingly, by controlling the extension and contraction of the luffing cylinder, the sinking support column 12 can be driven to rotate around the sinking rotating shaft 17, so as to adjust the amplitude of the sinking support column 12, and then change the position of the pressing mechanism 14 to adapt to different construction requirements.

[0052] The pressing mechanism 14 is used to press the pipe segment ring 4 to sink to the specified position. The pressing mechanism 14 can only include a vertically arranged hydraulic cylinder or pneumatic cylinder, etc., or other existing structures can be used, which are not limited here.

[0053] In some embodiments, referring to Figure 2 , Figure 3 , Figure 4 , Figure 5 The pressing mechanism 14 includes an equalizing beam 141 and a pressing cylinder 142. The pressing cylinder 142 is vertically arranged. The cylinder body of the pressing cylinder 142 is fixedly connected with the sinking support column 12, and the piston rod of the pressing cylinder 142 is connected with the equalizing beam 141. The leveling mechanism 15 is arranged on the equalizing beam 141. The leveling mechanism 15 can include two, which are arranged on the two sides of the equalizing beam 141. The pressing cylinder 142 can include a pneumatic cylinder or a hydraulic cylinder.

[0054] During construction, the luffing mechanism 13 is used to drive the sinking support column 12 to rotate around the sinking rotating shaft 17. When the sinking support column 12 is in a vertical state, the equalizing beam 141 is just located above the pipe segment ring 4, and the pressing cylinder 142 is in a vertical state. Then, the piston rod of the pressing cylinder 142 is extended and drives the equalizing beam 141 to move downward. After the equalizing beam 141 contacts with the top of the pipe segment ring 4, the equalizing beam 141 presses the pipe segment ring 4 downward to the specified position. Then, the pressing cylinder 142 is reset, the luffing mechanism 13 drives the sinking support column 12 to incline away from the pipe segment ring 4, until the pressing mechanism 14 is located on the outside of the pipe segment ring 4. Then, the next pipe segment ring 4 can be directly hoisted to the pipe segment ring 4 which has been installed.

[0055] In some embodiments, referring to Figure 2 , Figure 3 , Figure 4 , Figure 5 , the leveling mechanism 15 comprises a leveling spreader 151 connected with the balance beam 141 through a lifting assembly; the pipe ring 4 is connected with upward extending leveling reinforcement 3, the leveling reinforcement 3 is fixed with a plurality of reinforcement cross arms 31 at intervals along the axial direction, and the leveling spreader 151 is used to support below the reinforcement cross arms 31 during leveling.

[0056] Specifically, referring to Figure 1 , a plurality of leveling reinforcements 3 are arranged around the pipe ring 4, wherein the leveling reinforcement 3 can be fixedly connected with only the first pipe ring 4, or can be fixedly connected with each pipe ring 4. During construction, the sinking support 12 is driven to rotate around the sinking pivot 17 by the amplitude changing mechanism 13, and when the sinking support 12 is in a vertical state, the leveling spreader 151 is supported below the reinforcement cross arms 31, so that a plurality of support positions for supporting the pipe ring 4 are formed around the pipe ring 4, and the pipe ring 4 can be leveled by adjusting the height of each support position. The height of each support position can be achieved by driving the leveling spreader 151 to move up and down by the lifting assembly.

[0057] The lifting assembly can comprise a screw lifting mechanism, a gear and rack lifting mechanism, etc. In some embodiments, referring to Figure 3 , Figure 4 , Figure 5 , the lifting assembly comprises a fixed seat 152 connected with the balance beam 141, a movable seat 153 arranged below the fixed seat 152, a lifting cylinder 154 connected between the fixed seat 152 and the movable seat 153, and the leveling spreader 151 is connected with the movable seat 153. The lifting cylinder 154 is vertically arranged, the cylinder body is fixedly connected with the fixed seat 152, and the piston rod is fixedly connected with the movable seat 153. The lifting cylinder 154 can comprise a gas cylinder or a hydraulic cylinder. During operation, the piston rod of the lifting cylinder 154 is elongated to drive the movable seat 153 to move downward, and the movable seat 153 in turn drives the leveling spreader 151 to move downward; the piston rod of the lifting cylinder 154 is retracted to drive the movable seat 153 to move upward, and the movable seat 153 in turn drives the leveling spreader 151 to move upward.

[0058] In some embodiments, the bottom of the fixed seat 152 has a vertically arranged sliding groove, and the movable seat 153 is slidingly fitted in the sliding groove. The sliding groove is used to guide the upward and downward movement of the movable seat 153, thereby improving the reliability of the upward and downward movement of the movable seat 153.

[0059] In some embodiments, the leveling hanger 151 can be a leveling block, and the leveling hanger 151 is provided with a leveling hanger reinforcing bar slot 1511 for positioning the leveling reinforcing bar 3. During leveling, the leveling reinforcing bar 3 is accommodated in the leveling hanger reinforcing bar slot 1511, and the leveling reinforcing bar 3 is positioned by the leveling hanger reinforcing bar slot 1511, so as to ensure that the leveling hanger 151 can be stably supported below the reinforcing bar cross arm 31, and the reliability of the device is improved.

[0060] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any changes or replacements within the technical scope disclosed by the present application, which can be easily thought of by those skilled in the art, shall be covered within the protection scope of the present application.

Claims

1. A fabricated caisson sinking device, characterized by, The sinking support base (11) is provided with a sinking support column (12) extending upward and connected with the sinking support base (11) through a luffing mechanism (13), and the sinking support column (12) is provided with a pressing mechanism (14) for pressing a pipe segment ring (4) and a leveling mechanism (15) for leveling the pipe segment ring (4).

2. The assembled caisson sinking device according to claim 1, characterized in that, The luffing mechanism (13) comprises a luffing cylinder arranged obliquely, a piston rod of the luffing cylinder is connected with the sinking support column (12), and a cylinder body of the luffing cylinder is connected with the sinking support base (11).

3. The assembled caisson sinking device according to claim 2, characterized in that, The sinking support base (11) is provided with a luffing support base (16) fixed to an end away from the sinking support column (12), and the cylinder body of the luffing cylinder is connected with the luffing support base (16).

4. The assembled caisson sinking device according to claim 1, characterized in that, The pressing mechanism (14) comprises an equalizing beam (141) and a pressing cylinder (142), the pressing cylinder (142) is arranged vertically, a cylinder body of the pressing cylinder (142) is fixedly connected with the sinking support column (12), a piston rod of the pressing cylinder (142) is connected with the equalizing beam (141), and the leveling mechanism (15) is arranged on the equalizing beam (141).

5. The assembled caisson sinking device according to claim 4, characterized in that, The leveling mechanism (15) comprises a leveling spreader (151) connected with the equalizing beam (141) through a lifting assembly, the pipe segment ring (4) is connected with a leveling steel bar (3) extending upward, a plurality of steel bar cross arms (31) are fixedly arranged on the leveling steel bar (3) along an axial direction, and the leveling spreader (151) is arranged below the steel bar cross arms (31) during leveling.

6. The assembled caisson sinking device according to claim 5, characterized in that, The lifting assembly comprises a fixed seat (152) connected with the equalizing beam (141), a movable seat (153) arranged below the fixed seat (152), and a lifting cylinder (154) connected between the fixed seat (152) and the movable seat (153), and the leveling spreader (151) is connected with the movable seat (153).

7. The assembled caisson sinking device according to claim 6, characterized in that, A bottom of the fixed seat (152) is provided with a vertical sliding groove, and the movable seat (153) is slidingly fitted in the sliding groove.

8. The assembled caisson sinking device according to claim 5, characterized in that, The leveling spreader (151) is provided with a leveling spreader steel bar groove (1511) for positioning the leveling steel bar (3).

9. The assembled caisson sinking device according to claim 4, 5, 6, 7 or 8, characterized in that, The leveling mechanism (15) comprises two leveling mechanisms (15) arranged on both sides of the equalizing beam (141).

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