Safety protection device for underwater concrete construction of cast-in-place pile

Abstract

The utility model discloses a cast-in-place pile underwater concrete construction safety protection device which comprises a checkered plate, an opening and closing type well mouth and a bearing beam, the opening and closing type well mouth is composed of two symmetrical movable door plates, semicircular holes are formed in the middles of the side edges of the movable door plates, a connecting sleeve is arranged above the opening and closing type well mouth, and a guide cylinder is arranged below the bearing beam. At least three supporting assemblies are arranged below the bearing beam, the supporting assemblies are located on the outer side of the guide cylinder, each supporting assembly comprises a lifting cylinder and a base, and the lifting cylinders are located between the bearing beam and the bases. And the horizontal perpendicularity of the checkered plate and the connecting sleeve can be adjusted through the lifting cylinder, so that it is guaranteed that the position of the concrete guide pipe is accurate after the concrete guide pipe stretches into the pile casing.

Description

Technical Field

[0001] The utility model belongs to the technical field of bored cast-in-place pile construction, and more specifically relates to a safety protection device for underwater concrete construction of bored piles. Background Art

[0002] A cast-in-place pile is a pile made by forming a pile hole in the foundation soil at the construction site through mechanical drilling, steel pipe squeezing or manual excavation, placing a casing, placing a steel cage inside the casing, and pouring concrete using a concrete duct.

[0003] For example, Chinese patent application number 2022207222205 discloses a safety protection device for underwater concrete construction of bored cast-in-place piles, including a circular patterned plate, an open-and-close wellhead and a load-bearing beam, wherein the load-bearing beam is erected between the bored cast-in-place pile construction well and the patterned plate, the open-and-close wellhead is arranged above the patterned plate, and the open-and-close wellhead is symmetrically composed of squares with semicircular holes in the middle of two sides, a concrete conduit connecting sleeve is provided above the open-and-close wellhead, a concrete conduit is sleeved in the concrete conduit connecting sleeve, a concrete funnel is provided above the concrete conduit, and a circular hole is provided in the middle of the patterned plate.

[0004] The above patented technology provides a good working platform for construction. The open and close wellhead is conducive to the disassembly and installation of the concrete conduit. The concrete conduit connecting sleeve plays a limiting role, which can effectively control the height of the concrete conduit and reduce the safety risks during the pouring of bored piles.

[0005] However, during construction, the load-bearing beams are placed on top of the casing, which is subjected to greater pressure and has the risk of sinking. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a method in which the safety protection device is seated as a whole on the ground around the casing to avoid pressure on the casing causing the casing to sink, and the horizontal and vertical degrees of the patterned plate and the connecting sleeve can be adjusted by using a lifting cylinder to ensure that the concrete conduit is accurately positioned after being extended into the casing.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a safety protection device for underwater concrete construction of cast-in-place piles, comprising a patterned plate, an opening and closing wellhead and a load-bearing beam, the opening and closing wellhead is symmetrically composed of movable door panels with semicircular holes in the middle of two sides, a connecting sleeve is arranged above the opening and closing wellhead, a guide cylinder is arranged below the load-bearing beam, at least three support assemblies are arranged below the load-bearing beam, the support assembly is located on the outside of the guide cylinder, the support assembly comprises a lifting cylinder and a base, and the lifting cylinder is located between the load-bearing beam and the base.

[0008] Furthermore, the lifting cylinder is an electric hydraulic jack or a linear motor.

[0009] Furthermore, a plurality of anti-slip posts are arranged below the base.

[0010] Furthermore, the base is hinged to the lifting cylinder.

[0011] Furthermore, the two movable door panels are each provided with an upwardly extending semicircular sleeve at the corresponding opening and closing wellheads, the side of the semicircular sleeve is provided with a connecting ear plate, the connecting ear plate is provided with a fixing hole, a bolt is passed through the fixing hole, and a connecting sleeve is formed when the two semicircular sleeves are connected together.

[0012] Furthermore, the edge of the patterned plate is provided with a downwardly extending enclosure.

[0013] The invention further comprises a concrete funnel, an auxiliary support seat is arranged below the concrete funnel, and the bottom of the auxiliary support seat is pressed on the patterned plate.

[0014] Furthermore, the auxiliary support seat is welded by steel bars, and the auxiliary support seat is in a cone barrel shape.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: by setting the support assembly, the entire safety protection device can be located on the ground around the casing without causing downward pressure on the casing, and the lifting cylinder can be adjusted according to the flatness of the ground, and combined with the guide cylinder, it extends into the inside of the casing to ensure the angle of the patterned plate and the connecting sleeve; the lifting cylinder has a strong supporting force and can support the concrete funnel, thereby keeping the concrete funnel stable when pouring concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The three-dimensional structure of the utility model Figure 1 ;

[0017] Figure 2 The three-dimensional structure of the utility model Figure 2 ;

[0018] Figure 3 It is a three-dimensional structural diagram with a concrete funnel;

[0019] Figure 4 This is the front view with the concrete hopper.

[0020] Figure numerals: 1. patterned plate; 11. guide cylinder; 12. enclosure; 2. load-bearing beam; 3. support assembly; 31. lifting cylinder; 32. base; 321. anti-slip plug column; 4. movable door panel; 5. semicircular sleeve; 51. connecting ear plate; 6. concrete funnel; 7. auxiliary support seat; 8. concrete conduit. DETAILED DESCRIPTION

[0021] Reference Figures 1 to 4 The embodiment of the utility model of the safety protection device for underwater concrete construction of bored piles is further described.

[0022] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" and "a number" is two or more, unless otherwise clearly and specifically defined.

[0024] A safety protection device for underwater concrete construction of cast-in-place piles includes a patterned plate 1, an opening and closing wellhead and a load-bearing beam 2. The opening and closing wellhead is symmetrically composed of movable door panels 4 with semicircular holes in the middle of two sides. A connecting sleeve is arranged above the opening and closing wellhead, a guide cylinder 11 is arranged below the load-bearing beam 2, at least three support assemblies 3 are arranged below the load-bearing beam 2, the support assembly 3 is located on the outside of the guide cylinder 11, and the support assembly 3 includes a lifting cylinder 31 and a base 32. The lifting cylinder 31 is located between the load-bearing beam 2 and the base 32.

[0025] In this embodiment, the lifting cylinder 31 is preferably an electric hydraulic jack or a linear motor.

[0026] by Figure 2 Taking the four support assemblies 3 as an example, all the support assemblies 3 are evenly distributed around the circumference and are distributed on the periphery of the load-bearing beam 2, that is, the support assemblies 3 are located on the outside of the casing when in use, wherein the area of ​​the base 32 is larger than the cross-sectional area of ​​the lifting cylinder 31, so that it has a larger contact area with the ground, and the diameter of the guide tube 11 is slightly smaller than the inner diameter of the casing, which can be inserted into the inside of the casing to control the axial position of the connecting sleeve.

[0027] The four lifting cylinders 31 in this embodiment are independently controlled to rise and fall, so that the lengths of the four lifting cylinders 31 can be different.

[0028] During construction, the safety protection device is moved as a whole to the top of the casing, the guide cylinder 11 is inserted into the casing, and the length of each lifting cylinder 31 is adjusted so that the base 32 is supported on the ground, and the connecting sleeve is parallel to the axis of the casing, and the load-bearing beam 2 does not contact the top of the casing, and then the concrete conduit 8 and the concrete funnel 6 can be assembled.

[0029] In this embodiment, a plurality of anti-slip posts 321 are preferably disposed below the base 32 .

[0030] The anti-skid pins 321 can extend into the ground to prevent the base 32 from slipping and tilting.

[0031] In this embodiment, the base 32 is preferably hinged to the lifting cylinder 31 .

[0032] When the ground is uneven, the base 32 can be automatically adjusted according to the inclination of the ground so as to fit the ground and ensure good supporting force.

[0033] In this embodiment, the two movable door panels 4 are preferably provided with upwardly extending semicircular sleeves 5 at the corresponding opening and closing wellheads, and the sides of the semicircular sleeves 5 are provided with connecting ear plates 51, and the connecting ear plates 51 are provided with fixing holes, and bolts are passed through the fixing holes. When the two semicircular sleeves 5 are connected together, a connecting sleeve is formed.

[0034] like Figure 1 As shown, when the two movable door panels 4 are closed, the two semicircular sleeves 5 are close to each other, and the two semicircular sleeves 5 can be fastened together by passing bolts through the fixing holes of the ear plates to form a connecting sleeve, which can guide and limit the concrete conduit 8.

[0035] In this embodiment, the edge of the patterned plate 1 is preferably provided with a downwardly extending enclosure 12 .

[0036] When the patterned plate 1 covers the top of the casing, the enclosure 12 can block the gap between the patterned plate 1 and the casing to prevent foreign matter from falling into the casing from the side.

[0037] like Figure 3 and 4 As shown, the present embodiment preferably further includes a concrete funnel 6 , an auxiliary support seat 7 is arranged below the concrete funnel 6 , and the bottom of the auxiliary support seat 7 is pressed on the patterned plate 1 .

[0038] When pouring concrete, its weight is pressed on the patterned plate 1 through the auxiliary support seat 7, and the support assembly 3 is used for effective support. At this time, the concrete funnel 6 remains stable to avoid shaking caused by hoisting.

[0039] The auxiliary support seat 7 of the preferred embodiment is formed by welding steel bars, and the auxiliary support seat 7 is in a cone barrel shape.

[0040] The auxiliary support seat 7 is fixed together with the concrete funnel 6 , and is seated on the patterned plate 1 , and can be separated from the patterned plate 1 .

[0041] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A safety protection device for underwater concrete construction of cast-in-place piles, comprising a patterned plate, an opening and closing wellhead and a load-bearing beam, wherein the opening and closing wellhead is symmetrically composed of movable door panels with semicircular holes in the middle of two sides, Features: A connecting sleeve is arranged above the opening and closing wellhead, a guide cylinder is arranged below the load-bearing beam, at least three support assemblies are arranged below the load-bearing beam, the support assemblies are located outside the guide cylinder, and the support assemblies include a lifting cylinder and a base, and the lifting cylinder is located between the load-bearing beam and the base.

2. The safety protection device for underwater concrete construction of bored piles according to claim 1, Features: The lifting cylinder is an electric hydraulic jack or a linear motor.

3. The safety protection device for underwater concrete construction of bored piles according to claim 2, Features: A plurality of anti-skid plug posts are arranged below the base.

4. The safety protection device for underwater concrete construction of bored piles according to claim 3, Features: The base is hinged to the lifting cylinder.

5. The safety protection device for underwater concrete construction of bored piles according to claim 4, Features: The two movable door panels are each provided with an upwardly extending semicircular sleeve at the corresponding opening and closing wellheads, the side of the semicircular sleeve is provided with a connecting ear plate, the connecting ear plate is provided with a fixing hole, a bolt is passed through the fixing hole, and a connecting sleeve is formed when the two semicircular sleeves are connected together.

6. The safety protection device for underwater concrete construction of bored piles according to claim 5, Features: The edge of the patterned plate is provided with a downwardly extending enclosure.

7. The safety protection device for underwater concrete construction of bored piles according to claim 5, Features: It also includes a concrete funnel. An auxiliary support seat is arranged under the concrete funnel, and the bottom of the auxiliary support seat is pressed on the patterned plate.

8. The safety protection device for underwater concrete construction of bored piles according to claim 7, Features: The auxiliary support seat is welded by steel bars and is in a cone barrel shape.

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