Prestressed hollow pile orifice protection device

Abstract

The utility model belongs to the technical field of building enclosure, and particularly relates to a prestressed hollow pile orifice protection device which comprises a pile body, a steel cover plate is arranged on a pile body orifice in a matched mode, the whole steel cover plate is in a circular ring shape, a protection cylinder is arranged at the bottom of the steel cover plate, the protection cylinder and the steel cover plate are coaxially arranged, and the inner diameter of the protection cylinder is equal to that of the steel cover plate. A first guide hole and a second guide hole are symmetrically formed in the side wall of the pile casing, a first moving rod is arranged in the first guide hole, one end of the first moving rod is connected with a first screw rod, a second moving rod is arranged in the second guide hole, one end of the second moving rod is connected with a second screw rod, the second screw rod and the first screw rod are both located in the pile casing, and a threaded sleeve is arranged between the second screw rod and the first screw rod in a matched mode. According to the device, manual repeated measurement and alignment are not needed, the installation time can be shortened, and assembly can be rapidly completed.

Description

Technical Field

[0001] The utility model belongs to the technical field of building envelopes, and particularly relates to a prestressed hollow pile orifice protection device. Background Technique

[0002] During the construction of prestressed concrete hollow piles, orifice protection is a key link to ensure construction safety and pile quality. In current engineering practices, common protection means include orifice hardening enclosure method, movable protective cover method, woven bag plugging method, and manual hole cleaning method. The orifice hardening enclosure method forms a rigid protection structure by pouring retaining wall concrete more than 30 cm above the ground at the orifice, performing mortar hardening treatment within a range of 0.6 m around the orifice, and using vertical pipes welded or mesh fences to enclose the orifice; the movable protective cover method uses steel pipes welded into a movable protective cover with a bottom surface adapted to the orifice size and a height of about 1 m, and sets warning signs at a height of 60 cm. When working, it is moved away, and when construction stops, it covers the orifice to prevent personnel from falling or sundries from falling in; the woven bag plugging method uses compressed woven bags to fill the orifice, and reduces the entry of sundries such as soil and garbage into the hole through physical barriers; the manual hole cleaning method manually uses a Luoyang shovel to clean the silt in the hole in the later stage, and only through natural plugging or simple covering to treat the orifice during construction, without additional protective facilities.

[0003] Although these protection means can meet the basic protection requirements of the orifice, they have significant deficiencies. The orifice hardening enclosure method consumes a large amount of concrete and steel, the construction process is cumbersome, and construction waste is generated after demolition, with a large one-time investment; the movable protective cover method is prone to overturning or falling off in extreme weather, with poor safety and stability, and requires regular maintenance; the woven bag plugging method has weak strength, and the woven bags are easily deformed by extrusion or rot due to long-term exposure, resulting in sundries falling into the hole, posing a hidden danger of pile body pollution; the manual hole cleaning method is time-consuming and laborious for manual hole digging in the later stage, seriously prolonging the construction period.

[0004] Chinese Patent CN214615867U discloses a reusable pile hole orifice protection device. The upright columns of the orifice protection device are four in number and are fixed at the four corners of the orifice protection contour line. A suspension net plate is arranged between adjacent upright columns. Fixed hooks are hinged on both sides of the suspension net plate, and positioning counterbores adapted to the fixed hooks are arranged on the side wall of the suspension net plate. Fixed holes are evenly distributed along the length direction on the fixed rope of the rope winding device. One end of the fixed rope is detachably connected to the upright column, and the fixed hook is clamped in the fixed hole at the other end of the fixed rope. A warning signboard is arranged on the suspension net plate. This patent can be adjusted arbitrarily according to the needs of the on-site orifice size. The assembly of the fixed rope is realized through the hinged fixed hook, and it has high reusability. However, in actual operation, steps such as upright column positioning, net plate splicing, and fixed rope adjustment require professional personnel to operate, and the construction period is relatively long. At the same time, the relative positions of the four upright columns of this patent completely rely on manual measurement and alignment. If the line of sight at the construction site is blocked, it will lead to repeated disassembly and modification, reducing the construction efficiency. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide a prestressed hollow pile orifice protection device that does not require manual repeated measurement and alignment, can reduce the dependence on professional personnel, shorten the installation time and complete the assembly quickly.

[0006] To achieve the above purpose, the technical solution of the present utility model is as follows:

[0007] A prestressed hollow pile orifice protection device includes a pile body. A steel cover plate is cooperatively arranged on the orifice of the pile body. The steel cover plate is integrally circular ring-shaped. A protective cylinder is arranged at the bottom of the steel cover plate. The protective cylinder is coaxially arranged with the steel cover plate and the inner diameter of the protective cylinder is equal to the inner diameter of the steel cover plate. A guide hole one and a guide hole two are symmetrically arranged on the side wall of the protective cylinder. A moving rod one is arranged in the guide hole one. One end of the moving rod one is connected with a screw rod one. A moving rod two is arranged in the guide hole two. One end of the moving rod two is connected with a screw rod two. Both the screw rod two and the screw rod one are located inside the protective cylinder, and a threaded sleeve is cooperatively arranged between the screw rod two and the screw rod one.

[0008] Among them:

[0009] A connecting piece one is arranged between the moving rod one and the screw rod one. One end of the connecting piece one is fixedly arranged on the moving rod one, and the other end of the connecting piece one is rotatably arranged on the screw rod one.

[0010] A connecting piece two is arranged between the moving rod two and the screw rod two. One end of the connecting piece two is fixedly arranged on the moving rod two, and the other end of the connecting piece two is rotatably arranged on the screw rod two.

[0011] A sliding groove one is arranged on the moving rod one in cooperation with the guide hole one, and a sliding groove two is arranged on the moving rod two in cooperation with the guide hole two.

[0012] A locking rod is fixedly arranged inside the casing, and the length of the locking rod is equal to the inner diameter of the casing.

[0013] The screw rod 1 is threadedly connected to the locking rod, and the moving rod 1 is slidably connected to the locking rod.

[0014] The second screw rod is threadedly connected to the locking rod, and the second moving rod is slidably connected to the locking rod.

[0015] The thickness of the steel cover plate is between 3-5 mm, and the outer diameter of the steel cover plate is larger than the hole diameter of the pile body.

[0016] An annular rubber pad is arranged between the steel cover plate and the pile body.

[0017] The height of the casing is between 150-200 mm.

[0018] The beneficial effects of the utility model are:

[0019] By setting up a steel cover plate and casing, the protective device and the pile body hole can be quickly positioned without manual measurement and alignment, which significantly improves the installation efficiency; the threaded sleeve forms a linkage adjustment structure with screw one and screw two respectively, and screw one and screw two are synchronously driven to move by rotating the threaded sleeve, so that moving rod one and moving rod two are pressed against the inner wall of the pile body, providing a fulcrum for the protective device, enhancing the overall stability, and preventing the protective device from shifting or falling off; before pouring concrete on the pile body, it is only necessary to rotate the threaded sleeve in the opposite direction to quickly remove the entire device, reducing the difficulty of dismantling and labor costs; the casing and the steel cover plate cooperate to cover the pile body hole, which can prevent soil and debris from falling into the pile body hole and avoid pollution of the pile body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural sectional view of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the protective tube, the first guide hole, the second guide hole and the locking rod in the utility model;

[0022] Figure 3 It is a partial structural schematic diagram of the casing, the moving rod 1, the screw rod 1, the moving rod 2, the screw rod 2, the sliding groove 1 and the sliding groove 2 in the utility model;

[0023] Figure 4 It is a partial structural cross-sectional view of the threaded sleeve, the locking rod, the screw rod 1 and the screw rod 2 in the utility model;

[0024] Figure 5 It is a partial structural cross-sectional view of the threaded sleeve, the locking rod, the moving rod 1, the screw rod 1, the moving rod 2, the screw rod 2, the sliding groove 1 and the sliding groove 2 in the utility model;

[0025] Figure 6 Explosion diagram of the first moving rod, the first screw rod, the first sliding groove and the first connecting piece in the present utility model;

[0026] Figure 7 Explosion diagram of the second moving rod, the second screw rod, the second sliding groove and the second connecting piece in the present utility model;

[0027] Figure 8 Partial structural schematic diagram of the first screw rod and the first connecting piece in the present utility model;

[0028] In the figure:

[0029] 1, pile body; 2, steel cover plate; 3, casing; 4, first guiding hole; 5, second guiding hole; 6, first moving rod; 7, first screw rod; 8, second moving rod; 9, second screw rod; 10, threaded sleeve; 11, first connecting piece; 12, second connecting piece; 13, first sliding groove; 14, second sliding groove; 15, locking rod. Specific embodiments

[0030] The present utility model will be specifically described and illustrated below in conjunction with embodiments.

[0031] Embodiment 1

[0032] As Figure 1-8 shown, the prestressed hollow pile orifice protection device includes a pile body 1, a steel cover plate 2 is cooperatively arranged on the orifice of the pile body 1, the steel cover plate 2 is integrally arranged in a circular ring shape, a casing 3 is arranged at the bottom of the steel cover plate 2, the casing 3 is coaxially arranged with the steel cover plate 2 and the inner diameter of the casing 3 is equal to the inner diameter of the steel cover plate 2, a first guiding hole 4 and a second guiding hole 5 are symmetrically arranged on the side wall of the casing 3, a first moving rod 6 is arranged in the first guiding hole 4, one end of the first moving rod 6 is connected with a first screw rod 7, a second moving rod 8 is arranged in the second guiding hole 5, one end of the second moving rod 8 is connected with a second screw rod 9, both the second screw rod 9 and the first screw rod 7 are located inside the casing 3 and a threaded sleeve 10 is cooperatively arranged between the second screw rod 9 and the first screw rod 7.

[0033] The steel cover plate 2 is in a circular ring shape and the casing 3 is coaxially arranged with the steel cover plate 2, which can quickly cover the orifice of the pile body 1, eliminating the need for manual measurement and alignment, and significantly improving the installation efficiency; by rotating the threaded sleeve 10, the first screw rod 7 and the second screw rod 9 can be synchronously driven to move, so that the first moving rod 6 and the second moving rod 8 can be pressed against the inner wall of the pile body 1 to form a rigid support structure, preventing the protection device from shifting or falling off; the steel cover plate 2 and the casing 3 cooperate to cover the orifice of the pile body 1, preventing soil and sundries from falling into the hole and avoiding pollution of the pile body 1.

[0034] A connecting piece 11 is arranged between the first moving rod 6 and the first screw rod 7. One end of the connecting piece 11 is fixedly arranged on the first moving rod 6, and the other end of the connecting piece 11 is rotatably arranged on the first screw rod 7. When the threaded sleeve 10 drives the first screw rod 7 to rotate, the end of the connecting piece 11 connected to the first screw rod 7 can rotate freely, while the other end connected to the first moving rod 6 is rigidly fixed. Thus, the rotational motion of the first screw rod 7 is completely converted into the radial linear sliding of the first moving rod 6 along the first guiding hole 4. A handle is arranged on the threaded sleeve 10 in a matching manner.

[0035] A connecting piece 12 is arranged between the second moving rod 8 and the second screw rod 9. One end of the connecting piece 12 is fixedly arranged on the second moving rod 8, and the other end of the connecting piece 12 is rotatably arranged on the second screw rod 9. When the threaded sleeve 10 drives the second screw rod 9 to rotate, the end of the connecting piece 12 connected to the second screw rod 9 can rotate freely, while the other end connected to the second moving rod 8 is rigidly fixed. Thus, the rotational motion of the second screw rod 9 is completely converted into the radial linear sliding of the second moving rod 8 along the second guiding hole 5.

[0036] A first sliding groove 13 is arranged on the first moving rod 6 in a matching manner with the first guiding hole 4, and a second sliding groove 14 is arranged on the second moving rod 8 in a matching manner with the second guiding hole 5. The first sliding groove 13 cooperates with the first guiding hole 4 to enable the first moving rod 6 to slide only radially along the casing 3; the second sliding groove 14 cooperates with the second guiding hole 5 to enable the second moving rod 8 to slide only radially along the casing 3.

[0037] A locking rod 15 is fixedly arranged inside the casing 3, and the length of the locking rod 15 is equal to the inner diameter of the casing 3. The locking rod 15 is fixed and immovable. When the threaded sleeve 10 rotates, the first screw rod 7 and the second screw rod 9 rotate around the locking rod 15, and the first screw rod 7 and the second screw rod 9 move towards both sides while rotating; a double - thread is arranged inside the threaded sleeve 10. When the threaded sleeve 10 rotates, it will drive the first screw rod 7 and the second screw rod 9 to move in opposite directions simultaneously.

[0038] The first screw rod 7 is threadedly connected to the locking rod 15, and the first moving rod 6 is slidably connected to the locking rod 15.

[0039] The second screw rod 9 is threadedly connected to the locking rod 15, and the second moving rod 8 is slidably connected to the locking rod 15.

[0040] The thickness of the steel cover plate 2 is between 3 - 5 mm, and the outer diameter of the steel cover plate 2 is larger than the orifice diameter of the pile body 1. The steel cover plate 2 can completely cover the orifice of the pile body 1, and cooperate with the casing 3 to form a sealing protection for the orifice, blocking soil and sundries from falling from the orifice.

[0041] An annular rubber pad is arranged between the steel cover plate 2 and the pile body 1 in a matching manner. The annular rubber pad can fill the gap between the steel cover plate 2 and the top surface of the pile body 1, enhancing the sealing effect; at the same time, the annular rubber pad can assist in fixing the steel cover plate 2, reducing the displacement risk of the protection device during construction vibration, and improving the overall installation stability.

[0042] The height of the casing 3 is between 150 - 200 mm.

Claims

1. A protection device for the orifice of a prestressed hollow pile, comprising a pile body (1), and a steel cover plate (2) is cooperatively arranged on the orifice of the pile body (1), characterized in that, The steel cover plate (2) is integrally arranged in a circular ring shape. A casing (3) is arranged at the bottom of the steel cover plate (2). The casing (3) is coaxially arranged with the steel cover plate (2) and the inner diameter of the casing (3) is equal to the inner diameter of the steel cover plate (2). A first guiding hole (4) and a second guiding hole (5) are symmetrically arranged on the side wall of the casing (3). A first moving rod (6) is arranged in the first guiding hole (4). One end of the first moving rod (6) is connected with a first screw rod (7). A second moving rod (8) is arranged in the second guiding hole (5). One end of the second moving rod (8) is connected with a second screw rod (9). Both the second screw rod (9) and the first screw rod (7) are located inside the casing (3) and a threaded sleeve (10) is arranged in a cooperative manner between the second screw rod (9) and the first screw rod (7).

2. The prestressed hollow pile orifice protection device according to claim 1, wherein, A first connecting piece (11) is arranged between the first moving rod (6) and the first screw rod (7). One end of the first connecting piece (11) is fixedly arranged on the first moving rod (6), and the other end of the first connecting piece (11) is rotatably arranged on the first screw rod (7).

3. The orifice protection device for prestressed hollow piles according to claim 1, wherein, A second connecting piece (12) is arranged between the second moving rod (8) and the second screw rod (9). One end of the second connecting piece (12) is fixedly arranged on the second moving rod (8), and the other end of the second connecting piece (12) is rotatably arranged on the second screw rod (9).

4. The prestressed hollow pile orifice protection device according to claim 1, characterized in that, A first sliding groove (13) is arranged on the first moving rod (6) in a cooperative manner with the first guiding hole (4). A second sliding groove (14) is arranged on the second moving rod (8) in a cooperative manner with the second guiding hole (5).

5. The prestressed hollow pile orifice protection device according to claim 4, characterized in that A locking rod (15) is fixedly arranged inside the casing (3). The length of the locking rod (15) is equal to the inner diameter of the casing (3).

6. The pre-stressed hollow pile orifice protection device according to claim 5, characterized in that, The first screw rod (7) is in threaded connection with the locking rod (15), and the first moving rod (6) is in sliding connection with the locking rod (15).

7. The prestressed hollow pile orifice protection device according to claim 5, characterized in that, The second screw rod (9) is in threaded connection with the locking rod (15), and the second moving rod (8) is in sliding connection with the locking rod (15).

8. The orifice protection device for prestressed hollow piles according to claim 1, characterized in that, The thickness of the steel cover plate (2) is between 3 - 5 mm, and the outer diameter of the steel cover plate (2) is larger than the orifice diameter of the pile body (1).

9. The orifice protection device for prestressed hollow piles according to claim 1, wherein, An annular rubber pad is arranged in a cooperative manner between the steel cover plate (2) and the pile body (1).

10. The prestressed hollow pile orifice protection device according to claim 1, characterized in that, The height of the casing (3) is between 150 - 200 mm.

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