Steel cofferdam lowering device for main pier bearing platform construction

Abstract

The utility model provides a steel cofferdam lowering device for main pier bearing platform construction, which comprises a cofferdam structure, a hanging ring is arranged on the top surface of the cofferdam structure, the cofferdam structure comprises a steel cofferdam, a support ridge and a support, the support ridge is fixed in the middle of the inner side wall of the steel cofferdam, and the support ridge is fixed on the support. The bracket is horizontally supported and fixed on the inner side wall of the supporting ridge; the limiting structure is fixed to the inner side wall of the steel cofferdam through a bolt, the limiting structure comprises a fixing plate, a telescopic rod, a threaded sleeve, a pipe cover and a limiting barrel, the fixing plate is fixed to the inner side wall of the steel cofferdam through a bolt, and the limiting barrel is fixed to the inner side wall of the pipe cover; the positioning structure is mounted on the side wall of the steel casing; the steel cofferdam lowering device for main pier bearing platform construction has the advantages that when a cofferdam can be placed through the steel cofferdam lowering device, the lower position can be accurately aligned, and the cofferdam construction quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge construction technical field especially relates to a steel cofferdam is put down device for main pier pile cap construction. BACKGROUND

[0002] Steel cofferdam is a kind of enclosure structure form commonly used in bridge foundation and water construction operation of lower structure, especially suitable for deepwater foundation in large river, can bear larger water pressure, ensure that foundation construction safety is safe in flood season;Particularly in some construction conditions difficult or restricted by hydrology, topography, geology condition and cannot adopt steel sheet pile, island cofferdam and other enclosure structure, steel cofferdam shows its superiority more.

[0003] At present, when hoisting box cofferdam is put down using traditional technology, due to high water pressure of deepwater operation, in addition to the volume of steel cofferdam, steel cofferdam needs to bear huge wave force in addition to the water flow force equivalent to conventional inland river, if conventional putting-down method and measure are used, the lifting and putting-down of cofferdam will be affected, and great putting-down alignment difficulty is caused.

[0004] Therefore, it is necessary to provide a new steel cofferdam putting-down device for main pier pile cap construction to solve the above technical problems. CONTENT OF UTILITY MODEL

[0005] The utility model solves the technical problem to provide a kind of steel cofferdam putting-down device for main pier pile cap construction, which can accurately align the position below when the device is placed, and improve the construction quality of cofferdam.

[0006] To solve the above technical problems, the steel cofferdam putting-down device for main pier pile cap construction provided by the utility model comprises: a cofferdam structure, a lifting ring is arranged on the top surface of the cofferdam structure, the cofferdam structure comprises a steel cofferdam, a supporting beam and a support, the supporting beam is fixed to the center position of the inner side wall of the steel cofferdam, and the support is supported and fixed to the inner side wall of the supporting beam in a horizontal state;A limiting structure is fixed to the inner side wall of the steel cofferdam by bolts, the limiting structure comprises a fixed plate, an extension rod, a threaded sleeve, a pipe cover and a limiting cylinder, the fixed plate is fixed to the inner side wall of the steel cofferdam by bolts, one end of the extension rod is fixed to the center position of the side wall of the fixed plate, the threaded sleeve is rotationally connected to one end of the extension rod, the pipe cover is rotationally connected to the other end of the extension rod, and the limiting cylinder is fixed to the inner side wall of the pipe cover;A positioning structure is installed on the side wall of the steel casing, the positioning structure comprises a positioning cylinder, a connecting block and a clamp, the positioning cylinder is in vertical state and abuts against the side wall of the steel casing, the connecting block is fixed to the side walls at both ends of the positioning cylinder, and the clamp is rotationally connected to one end of the connecting block.

[0007] Preferably, the side wall of the one end of the telescopic rod is provided with a thread, and is threadedly connected with the threaded sleeve, and the one end of the telescopic rod is rotationally connected with the threaded sleeve.

[0008] Preferably, the tube cover is in a cylindrical shape, one end of the tube cover is provided with a notch, the width of the notch is less than the diameter of the positioning cylinder, and the inner diameter of the tube cover is greater than the diameter of the positioning cylinder.

[0009] Preferably, the limiting cylinder is in a conical shape, the diameter of the limiting cylinder is less than the inner diameter of the positioning cylinder, the limiting cylinder is fixed to the inner side wall of the tube cover, and the limiting cylinder and the tube cover are at the same center point.

[0010] Preferably, the side wall of one end of the positioning cylinder is also provided with a notch, the tube cover slides on the side wall of the positioning cylinder, and the limiting cylinder slides on the inner side wall of the positioning cylinder.

[0011] Preferably, the top end of the positioning cylinder is higher than the height of the steel casing, the connecting block is rotationally connected with the clamp, and the clamp is clamped on the side wall of the steel casing.

[0012] Compared with the related art, the steel cofferdam lowering device for main pier pile cap construction has the following beneficial effects:

[0013] The utility model provides a kind of steel cofferdam lower device for main pier pile cap construction, the position of the cofferdam structure is lowered, the positioning structure is fixed on the side wall of the steel casing that supports the cofferdam structure support point, then according to the position of the positioning structure, the limiting structure is fixed on the inner side wall of the cofferdam structure by bolt, and the limiting structure is fixed with two layers of upper and lower, and the limiting structure of two layers is position corresponding, and then make the limiting structure of two layers of upper and lower with the positioning structure of corresponding position alignment, the lifting ring is provided on the top surface of the cofferdam structure, so that the hoisting device can be lifted by the lifting ring The cofferdam structure, and the height of the hoisting is greater than the height of the positioning structure, then by adjusting the length and angle of the limiting structure, the rotation of the telescopic rod and the sleeve can make the position of the limiting structure and the position of the corresponding positioning structure have angular deviation, so that the sleeve angle can be adjusted to calibrate, so that the limiting cylinder at one end of the limiting structure is directly above the positioning cylinder in the positioning structure, with the lowering of the cofferdam structure, the end of the limiting structure can be clamped into the inside of the positioning structure, and then the positioning structure can support and position limit the steel cofferdam through the limiting structure, so that the position deviation does not occur during the lowering of the steel cofferdam, i.e. the steel cofferdam can be lowered to the specified position, and the device has the advantages of accurate alignment of the lower position when the cofferdam is placed, and improved cofferdam construction quality. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A preferred embodiment structure diagram of the steel cofferdam lower device for main pier pile cap construction is provided.

[0015] Figure 2 For Figure 1 The structure diagram of the cofferdam structure side view section is shown.

[0016] Figure 3 For Figure 2 The structure diagram of the limiting structure three-dimensional display is shown.

[0017] Figure 4 For Figure 1 The structure diagram of the A part enlargement is shown.

[0018] Figure 5 For Figure 3 The structure diagram of the limiting structure section is shown.

[0019] The figure mark: 1, steel casing, 2, lifting ring, 3, cofferdam structure, 31, steel cofferdam, 32, support beam, 33, support, 4, limiting structure, 41, fixed plate, 42, telescopic rod, 43, threaded sleeve, 44, pipe cover, 45, limiting cylinder, 5, positioning structure, 51, positioning cylinder, 52, connecting block, 53, clamp. DETAILED DESCRIPTION

[0020] The utility model will be further described below in combination with the drawings and embodiments.

[0021] Please refer to Figures 1-5 , wherein Figure 1 It is a preferred embodiment structure diagram of the steel cofferdam lowering device for main pier cap construction provided by the utility model; Figure 2 It is Figure 1 The structure diagram of the cofferdam structure side view section; Figure 3 It is Figure 2 The structure diagram of the limiting structure three-dimensional display; Figure 4 It is Figure 1 The structure diagram of A part amplification; Figure 5 It is Figure 3 The structure diagram of the limiting structure section, the steel cofferdam lowering device for main pier cap construction includes: cofferdam structure 3, the top surface of cofferdam structure 3 is provided with lifting ring 2, cofferdam structure 3 includes steel cofferdam 31, support beam 32 and support 33, the central position of the inner side wall of steel cofferdam 31 is fixed with support beam 32, and support 33 is supported and fixed to the inner side wall of support beam 32 in a horizontal state;Limiting structure 4 is fixed on the inner side wall of steel cofferdam 31 by bolts, and limiting structure 4 includes fixed plate 41, telescopic rod 42, threaded sleeve 43, pipe cover 44 and limiting cylinder 45, fixed plate 41 is fixed on the inner side wall of steel cofferdam 31 by bolts, one end of telescopic rod 42 is fixed to the central position of the side wall of fixed plate 41, threaded sleeve 43 is rotatably connected to one end of telescopic rod 42, pipe cover 44 is rotatably connected to the other end of telescopic rod 42, and limiting cylinder 45 is fixed to the inner side wall of pipe cover 44;Positioning structure 5 is installed on the side wall of steel casing 1, and positioning structure 5 includes positioning cylinder 51, connecting block 52 and clamp 53, positioning cylinder 51 abuts against the side wall of steel casing 1 in a vertical state, connecting block 52 is fixed to the side wall of both ends of positioning cylinder 51, and clamp 53 is rotatably connected to one end of connecting block 52.

[0022] In the specific implementation process, such as Figure 1 , Figure 2 , Figure 3 And Figure 5As shown in the drawings, one end of the telescopic rod 42 is provided with a threaded side wall, and is screwed with the threaded sleeve 43, and the other end of the telescopic rod 42 is rotationally connected with the threaded sleeve 43; by rotating the threaded sleeve 43, the telescopic rod 42 can be driven to extend or contract, so that the telescopic rod 42 can be adjusted in length according to the distance between the steel cofferdam 31 and the steel casing 1.

[0023] In the specific implementation process, as shown in the drawings, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown in the drawings, the shape of the sleeve 44 is cylindrical, one end of the sleeve 44 is provided with a notch, the width of the notch is smaller than the diameter of the positioning cylinder 51, and the inner diameter of the sleeve 44 is greater than the diameter of the positioning cylinder 51; the shape of the limiting cylinder 45 is conical, the diameter of the limiting cylinder 45 is smaller than the inner diameter of the positioning cylinder 51, the limiting cylinder 45 is fixed to the inner side wall of the sleeve 44, and the limiting cylinder 45 and the sleeve 44 are at the same center point; by clamping the inner and outer side walls of the positioning cylinder 51 with the limiting cylinder 45 and the sleeve 44, the telescopic rod 42 can be connected with the positioning cylinder 51 through the limiting cylinder 45 and the sleeve 44, so that the telescopic rod 42 is supported between the inner side wall of the steel cofferdam 31 and the steel casing 1, thereby limiting the lowering of the steel cofferdam 31.

[0024] In the specific implementation process, as shown in the drawings, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown in the drawings, the side wall of one end of the positioning cylinder 51 is also provided with a notch, the sleeve 44 slides on the side wall of the positioning cylinder 51, and the limiting cylinder 45 slides on the inner side wall of the positioning cylinder 51; the top end of the positioning cylinder 51 is higher than the height of the steel casing 1, the connecting block 52 is rotationally connected with the clamp 53, and the clamp 53 is clamped on the side wall of the steel casing 1; by fixing the connecting piece on the side wall of the steel casing 1 with the clamp 53, the position of the positioning cylinder 51 is fixed on the side wall of the steel casing 1.

[0025] The working principle of the steel cofferdam lowering device for main pier pile cap construction provided by the utility model is as follows:

[0026] In use, first, the size of the steel cofferdam 31 is measured, and the orientation of the steel cofferdam 31 is adjusted in advance, then according to the position of the steel cofferdam 31, the positioning cylinder 51 is vertically fixed on the side wall of the steel casing 1 at the corresponding support point through the clamp 53, the notch of one end of the side wall of the positioning cylinder 51 faces the steel cofferdam 31, and according to the position of the positioning cylinder 51, the telescopic rod 42 is bolted on the side wall of the steel cofferdam 31 through the fixing plate 41, and the position of the telescopic rod 42 corresponds to the position of the positioning cylinder 51, then the steel cofferdam 31 is connected with the lifting ring 2 arranged on the top surface of the steel cofferdam 31 through a hoisting device, the steel cofferdam 31 is lifted by the hoisting device, the lifting height is greater than the height of the positioning cylinder 51, the position of the steel cofferdam 31, the length of the telescopic rod 42 and the angle of the pipe cover 44 are adjusted, the limiting cylinder 45 at the corresponding position is above the positioning cylinder 51, the bottom end of the limiting cylinder 45 is inserted into the top end of the positioning cylinder 51, the steel cofferdam 31 is limited by the clamping of the limiting cylinder 45 and the positioning cylinder 51 at multiple points, and the pipe cover 44 is also clamped on the side wall of the positioning cylinder 51 and limited by the telescopic rod 42, the pipe cover 44 and the limiting cylinder 45, so that the steel cofferdam 31 does not deviate during lowering, that is, the steel cofferdam 31 can be lowered to the specified position, and the device has the advantages that the device can accurately align the position below when the cofferdam is placed, and the cofferdam construction quality is improved.

[0027] Compared with the related art, the steel cofferdam lowering device for main pier pile cap construction has the following advantages:

[0028] The utility model provides a kind of steel cofferdam lower device for main pier pile cap construction, the position of the cofferdam structure 3 is lowered, the positioning structure 5 is fixed on the side wall of the steel casing 1 supporting the cofferdam structure 3 supporting point, then according to the position of the positioning structure 5, the limiting structure 4 is fixed on the inner side wall of the cofferdam structure 3 by bolt, and the limiting structure 4 is fixed with two layers from top to bottom, and the limiting structure 4 of two layers is position corresponding, and then make the limiting structure 4 of two layers from top to bottom with the positioning structure 5 of corresponding position alignment, the lifting ring 2 provided on the top surface of the cofferdam structure 3, make hoisting device can be lifted by the lifting ring 2 the cofferdam structure 3, and make the height of lifting is greater than the height of the positioning structure 5, then by adjusting the length and angle of the limiting structure 4, the rotation of the telescopic rod 42 and the sleeve, the position of the limiting structure 4 fixed can be deviated from the angle of the position of the corresponding positioning structure 5, so that the sleeve angle can be adjusted to calibrate, so that the limiting cylinder 45 of one end of the limiting structure 4 is above the positioning cylinder 51 in the positioning structure 5, with the lowering of the cofferdam structure 3, one end of the limiting structure 4 can be clamped into the inside of the positioning structure 5, and then the positioning structure 5 can support and position limit the steel cofferdam 31 by the limiting structure 4, so that the position deviation does not occur in the process of lowering the steel cofferdam 31, i.e. the steel cofferdam 31 can be lowered to the specified position, the device has the advantages that the cofferdam can be placed accurately aligned with the position below, and the cofferdam construction quality is improved.

[0029] The above is only the embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. A steel cofferdam lowering device for main pier pile cap construction, characterized in that, Include; The cofferdam structure (3) is provided with a lifting ring (2) on the top surface of the cofferdam structure (3), the cofferdam structure (3) comprises a steel cofferdam (31), a support beam (32) and a support (33), the support beam (32) is fixed to the center position of the inner wall of the steel cofferdam (31), and the support (33) is horizontally supported and fixed to the inner wall of the support beam (32); The limiting structure (4) is fixed to the inner wall of the steel cofferdam (31) by bolts, the limiting structure (4) comprises a fixed plate (41), an extension rod (42), a threaded sleeve (43), a pipe cover (44) and a limiting cylinder (45), the fixed plate (41) is fixed to the inner wall of the steel cofferdam (31) by bolts, one end of the extension rod (42) is fixed to the center position of the side wall of the fixed plate (41), the threaded sleeve (43) is rotatably connected to one end of the extension rod (42), the pipe cover (44) is rotatably connected to the other end of the extension rod (42), and the limiting cylinder (45) is fixed to the inner wall of the pipe cover (44); The positioning structure (5) is installed on the side wall of the steel casing (1), the positioning structure (5) comprises a positioning cylinder (51), a connecting block (52) and a clamp (53), the positioning cylinder (51) is vertically abutted to the side wall of the steel casing (1), the connecting block (52) is fixed to the side wall of both ends of the positioning cylinder (51), and the clamp (53) is rotatably connected to one end of the connecting block (52).

2. The steel cofferdam lowering device for the construction of a main pier cap according to claim 1, characterized in that, The side wall of one end of the extension rod (42) is provided with threads, and is threadedly connected with the threaded sleeve (43), and the other end of the extension rod (42) is rotatably connected with the threaded sleeve (43).

3. The steel cofferdam lowering device for the construction of a main pier cap according to claim 1, characterized in that, The pipe cover (44) is in the shape of a cylinder, one end of the pipe cover (44) is provided with a notch, the width of the notch is smaller than the diameter of the positioning cylinder (51), and the inner diameter of the pipe cover (44) is larger than the diameter of the positioning cylinder (51).

4. The steel cofferdam lowering device for the construction of a main pier cap according to claim 1, characterized in that, The limiting cylinder (45) is in the shape of a cone, the diameter of the limiting cylinder (45) is smaller than the inner diameter of the positioning cylinder (51), the limiting cylinder (45) is fixed to the inner wall of the pipe cover (44), and the limiting cylinder (45) and the pipe cover (44) are at the same center point.

5. The steel cofferdam lowering device for the construction of a main pier cap according to claim 1, characterized in that, The side wall of one end of the positioning cylinder (51) is also provided with a notch, the pipe cover (44) slides on the side wall of the positioning cylinder (51), and the limiting cylinder (45) slides on the inner wall of the positioning cylinder (51).

6. The steel cofferdam lowering device for the construction of a main pier cap according to claim 1, characterized in that, The top end position of the positioning cylinder (51) is higher than the height of the steel casing (1), the connecting block (52) and the clamp (53) are rotatably connected, and the clamp (53) is clamped on the side wall of the steel casing (1).

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