Wet joint temporary protection device and construction method

Abstract

The invention discloses a wet joint temporary protection device and a construction method, and relates to the technical field of building construction.The wet joint temporary protection device comprises a cylindrical hollow roller, the roller is arranged at one end of a wet joint, a long telescopic fixing device is fixed to the upper portion of the outer side of the roller, and the long telescopic fixing device is connected to a steel bar at one end of the wet joint in a hooked mode; an opening is formed in the bottom of the inner side of the roller along the long axis in the full length direction, and a protection plate is rolled and stored in the roller through the opening. And a short telescopic fixing device is fixed on the outer edge of the protective plate and is hooked on a reinforcing steel bar at the other end of the wet joint. The technical problem that an existing safety protection device before prefabricated bridge wet joint construction is prone to being damaged and lost is solved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a temporary wet joint protection device and a construction method. Background Art

[0002] With the progress of society and the improvement of environmental awareness, the construction environment of bridges has received more and more attention, especially for urban core bridges. The construction period of bridges, construction noise pollution, and traffic pressure have gradually become the primary considerations in bridge design. Prefabrication technology has the advantages of component production standards, fast and convenient on-site installation, and energy-saving and environmentally friendly construction. It can reduce the impact on the atmospheric environment and traffic roads, improve quality and safety, and civilized construction level. It is the development trend of my country's bridge industry.

[0003] Prefabricated bridge construction usually adopts the construction process of simple support first and then continuous support. That is, when the bridge is erected, the T-beam or box beam between the piers is first placed on the pier support in the form of a simple support beam, and then the beams are connected into an integral continuous beam through the post-casting joints and the middle cross beam. The construction period is short and the bridge construction can be completed quickly; the construction cost is relatively low.

[0004] However, the existing construction technology has problems in construction safety: after the erection of prefabricated beams, the wet joints and the middle cross beams have not yet been constructed, and there are gaps, which pose risks of falling from heights and dropping objects, affecting the safety of construction workers; currently, the safety protection before the construction of wet joints of prefabricated bridges mainly uses safety nets and thin iron plates for temporary protection, both of which have the disadvantages of being easily damaged and lost, so it is particularly important to improve the safety protection before the construction of wet joints. Summary of the invention

[0005] The purpose of the present invention is to provide a temporary protection device for wet joints and a construction method, so as to solve the technical problem that the safety protection device before the construction of wet joints of prefabricated bridges is easily damaged or lost.

[0006] To achieve the above object, the present invention adopts the following technical solution: A temporary protection device for wet joints comprises a cylindrical hollow drum, which is arranged at one end of the wet joint, a long telescopic fixture is fixed to the upper outer part of the drum, and the long telescopic fixture is hooked and connected to the steel bar at one end of the wet joint; an opening is opened along the long axis at the inner bottom of the drum, and a guard plate is rolled up and stored in the opening and in the drum; a short telescopic fixture is fixed to the outer edge of the guard plate, and the short telescopic fixture is hooked to the steel bar at the other end of the wet joint.

[0007] A further preferred technical solution: the short telescopic fixing device includes a cross bar fixedly connected to the outer edge of the guard plate, and a pair of first telescopic rods are vertically movably connected at both ends of the cross bar, and the intersection of the cross bar and the first telescopic rod is tightened by a first adjusting bolt thread.

[0008] A further preferred technical solution is that the bottom of the first telescopic rod is bent horizontally inward, and the bent portion is hooked on the wet joint steel bar.

[0009] A further preferred technical solution is as follows: a horizontal threaded hole is formed on the cross bar at a position corresponding to the insertion position of the first telescopic rod; the first adjusting bolt is threadedly inserted into the threaded hole and tightens the first telescopic rod.

[0010] A further preferred technical solution: the long telescopic fixing device includes a U-shaped rod annularly fixedly connected between a pair of bottom surfaces and side surfaces of the drum, the main limb of the U-shaped rod is horizontally connected to the side surface of the drum, the secondary limbs are arranged along the diameter of the bottom surface, the two ends of the main limb are vertically movably connected with a pair of second telescopic rods, and the junction between the main limb and the second telescopic rod is tightened by a second adjusting bolt thread.

[0011] A further preferred technical solution is that the bottom of the second telescopic rod is bent horizontally inward, and the bent portion is hooked on the wet joint steel bar.

[0012] A further preferred technical solution is as follows: a horizontal threaded hole is opened on the main limb corresponding to the position where the second telescopic rod is inserted, and the second adjusting bolt is threadedly inserted into the threaded hole and tightens the second telescopic rod.

[0013] A further preferred technical solution: a guard plate rewinding structure is provided inside the drum, including an axis rod passing through the centers of the two bottom surfaces, the two ends of the axis rod are connected to the centers of the bottom surfaces through bearings, and rewinding surfaces perpendicular to the axis rod are provided at intervals on the axis rod, and the rewinding surfaces are composed of rewinding rods welded on the axis rod at vertical intervals along the annular direction.

[0014] A further preferred technical solution: the inner edge of the guard plate is fixedly connected between the rewinding surfaces; One end of the shaft rod extends out of the drum and is fixedly connected with a zigzag handle.

[0015] The construction method of the wet joint temporary protection device comprises the following steps: Step 1: First, adjust the arm length through the long telescopic fixture connected to the side of the drum to position and fix the reserved steel bars at one end of the wet joint.

[0016] Step 2: Then stretch the guard plate to the designated position at the other end of the wet seam.

[0017] Step three, finally, position and fix the guard plate by adjusting the short telescopic fixture at the guard plate end and the reserved steel bars at the other end of the wet joint.

[0018] Step 4: When recovering, the first telescopic rod can be released by adjusting the bolt, and the guard plate can be recovered into the drum through the handle.

[0019] Compared with the prior art, the present invention has the following characteristics and beneficial effects: The present invention provides a portable and convenient temporary protective device before wet joint construction and a construction method, which is simple to manufacture, easy and quick to install, and easy to carry. It has a good on-site use effect and can be repeatedly used many times, thereby improving safe construction efficiency and civilized construction quality, and has a good promotion and application value.

[0020] The present invention utilizes the telescopic rod, the adjusting bolt and the roller guard plate to well protect the wet joint. It is easy to disassemble and install, and CI graphics can be set on the guard plate, which also has a good effect on corporate publicity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a perspective view of a temporary protection device for wet joints of the present invention; Figure 2 is a front view of the temporary protection device for wet joints of the present invention; Figure 3 This is a diagram showing the use status of the temporary protection device for wet joints of the present invention (before the guard plate is installed); Figure 4 This is a diagram showing the use status of the temporary protection device for wet joints of the present invention (after the guard plate is installed); Figure numerals: 1. Roller, 2. Handle, 3. First telescopic rod, 4. First adjusting bolt, 5. Guard plate, 6. Wet seam, 7. Cross bar, 8. Second telescopic rod, 9. Second adjusting bolt, 10. U-shaped rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-4 As shown, a temporary protection device for wet joints and a construction method of the present invention are provided. The temporary protection device for wet joints comprises a cylindrical hollow drum 1, which is arranged at one end of the wet joint. A long telescopic fixing device is fixed to the upper outer portion of the drum 1, and the long telescopic fixing device is hooked and connected to the steel bar at one end of the wet joint; an opening is opened along the long axis at the inner bottom of the drum 1, and a guard plate 5 is rewound and stored through the opening and inside the drum 1; a short telescopic fixing device is fixed to the outer edge of the guard plate 5, and the short telescopic fixing device is hooked to the steel bar at the other end of the wet joint.

[0024] The short telescopic fixing device includes a cross bar 7 fixedly connected to the outer edge of the guard plate 5, and the two ends of the cross bar 7 are vertically movably connected with a pair of first telescopic rods 3, and the intersection of the cross bar 7 and the first telescopic rod 3 is threadedly tightened by a first adjusting bolt 4.

[0025] The bottom of the first telescopic rod 3 is bent inwardly horizontally, and the bent portion is hooked on the wet joint steel bar; the first telescopic rod 3 is a steel pipe.

[0026] A horizontal threaded hole is formed on the cross bar 7 at a position corresponding to the insertion position of the first telescopic rod 3 , and the first adjusting bolt 4 is threadedly inserted into the threaded hole and presses against the first telescopic rod 3 .

[0027] The long telescopic fixing device includes a U-shaped rod 10 annularly fixedly connected between a pair of bottom surfaces and side surfaces of the drum 1. The main limb of the U-shaped rod is horizontally connected to the side surface of the drum 1, and the secondary limbs are arranged along the diameter of the bottom surface. The two ends of the main limb are vertically movably connected with a pair of second telescopic rods 8, and the junction between the main limb and the second telescopic rod 8 is threadedly tightened by a second adjusting bolt 9.

[0028] The bottom of the second telescopic rod 8 is bent inwardly horizontally, and the bent portion is hooked on the wet joint steel bar; the second telescopic rod 8 is a steel pipe.

[0029] A horizontal threaded hole is opened on the main limb corresponding to the position where the second telescopic rod 8 is inserted, and the second adjusting bolt 9 is threadedly inserted into the threaded hole and tightens the second telescopic rod 8.

[0030] A guard plate rewinding structure is provided inside the drum 1, including an axis rod passing through the centers of the two bottom surfaces, the two ends of the axis rod are connected to the centers of the bottom surfaces through bearings, and rewinding surfaces perpendicular to the axis rod are arranged at intervals on the axis rod, and the rewinding surfaces are composed of rewinding rods welded on the axis rod at vertical intervals along the annular direction.

[0031] The inner edge of the guard plate is fixedly connected between the rewinding surfaces; the material of the guard plate is first-grade strip steel.

[0032] One end of the shaft extends out of the drum 1 and is fixedly connected to a zigzag handle 2; the handle 2 is a hand-crank handle.

[0033] The present invention provides a portable and convenient temporary protective device before wet joint construction. The device is simple to manufacture, easy and quick to install, and easy to carry. It has a good on-site use effect and can be reused many times, thereby improving safe construction efficiency and civilized construction quality, and has a good promotion and application value.

[0034] The present invention utilizes the telescopic rod, the adjusting bolt and the roller guard plate to well protect the wet joint. It is easy to disassemble and install, and CI graphics can be set on the guard plate, which also has a good effect on corporate publicity.

[0035] The present invention refers to the structural characteristics of a 5m measuring tape (rewinding, fixed) and a reel (rewinding); a roller, a telescopic rod (material: steel pipe) and a guard plate (material: first-grade strip steel) are used to make a recyclable and fixed temporary wet joint protection device.

[0036] The guard plate is rolled into the drum, and a hand-cranked handle is set in the center of the drum for retrieving the guard plate. There are two sets of telescopic fixing devices, namely a long telescopic fixing device and a short telescopic fixing device. The long telescopic fixing device is fixed on the drum, and the short telescopic fixing device is connected to the end of the iron guard plate. The telescopic fixing device can adjust the length for fixing to the wet joint steel bars.

[0037] See also Figure 3 and Figure 4 As shown, the working process of the present invention is as follows: first, the arm length is adjusted by the long telescopic fixing device connected to the drum side to position and fix it with the wet joint reserved steel bars, then the guard plate is stretched to the specified position, and finally, the short telescopic fixing device at the end of the guard plate is adjusted to position and fix it with the wet joint reserved steel bars; when recovering, the first telescopic rod can be released by adjusting the bolt, and the guard plate can be recovered into the drum through the handle.

[0038] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A temporary protection device for wet joints, characterized by: The invention comprises a cylindrical hollow roller (1), the roller (1) being arranged at one end of the wet joint, a long telescopic fixing device being fixed to the upper outer portion of the roller (1), the long telescopic fixing device being hooked and connected to the steel bar at one end of the wet joint; an opening being opened along the long axis at the inner bottom of the roller (1), a guard plate (5) being reeled and received through the opening and inside the roller (1); a short telescopic fixing device being fixed to the outer edge of the guard plate (5), the short telescopic fixing device being hooked to the steel bar at the other end of the wet joint.

2. The temporary protection device for wet joints according to claim 1, characterized in that: The short telescopic fixing device comprises a cross bar (7) fixedly connected to the outer edge of the guard plate (5) through its entire length, and a pair of first telescopic rods (3) are vertically movably connected to the two ends of the cross bar (7), and the intersection of the cross bar (7) and the first telescopic rod (3) is threadedly tightened by a first adjusting bolt (4).

3. The temporary protection device for wet joints according to claim 2, characterized in that: The bottom of the first telescopic rod (3) is bent horizontally inward, and the bent portion is hooked on the wet joint steel bar.

4. The temporary protection device for wet joints according to claim 2, characterized in that: A horizontal threaded hole is formed on the crossbar (7) at a position corresponding to the insertion position of the first telescopic rod (3), and the first adjusting bolt (4) is threadedly inserted into the threaded hole and tightens the first telescopic rod (3).

5. The temporary protection device for wet joints according to claim 1, characterized in that: The long telescopic fixing device comprises a U-shaped rod (10) fixedly connected in an annular direction between a pair of bottom surfaces and side surfaces of the drum (1), a main limb of the U-shaped rod being horizontally connected to the side surface of the drum (1), a secondary limb being arranged along the diameter of the bottom surface, two ends of the main limb being vertically movably connected to a pair of second telescopic rods (8), and a junction between the main limb and the second telescopic rod (8) being threadedly tightened by a second adjusting bolt (9).

6. The temporary protection device for wet joints according to claim 5, characterized in that: The bottom of the second telescopic rod (8) is bent inwardly horizontally, and the bent portion is hooked on the wet joint steel bar.

7. The temporary protection device for wet joints according to claim 5, characterized in that: A horizontal threaded hole is provided on the main limb at a position corresponding to the insertion position of the second telescopic rod (8), and the second adjusting bolt (9) is threadedly inserted into the threaded hole and tightens the second telescopic rod (8).

8. The temporary protection device for wet joints according to claim 1, characterized in that: A guard plate rewinding structure is provided inside the drum (1), comprising a shaft extending through the centers of the two bottom surfaces, the two ends of the shaft being connected to the centers of the bottom surfaces via bearings, and rewinding surfaces perpendicular to the shaft being provided at intervals on the shaft, the rewinding surfaces being composed of rewinding rods welded to the shaft at intervals along the annular direction.

9. The temporary protection device for wet joints according to claim 8, characterized in that: The inner edge of the guard plate is fixedly connected between the rewinding surfaces; One end of the shaft extends out of the roller (1) and is fixedly connected to the zigzag handle (2).

10. The construction method of the temporary protection device for wet joints according to claim 1, characterized in that: The following steps are involved: Step 1: First, adjust the arm length through the long telescopic fixture connected to the side of the drum to position and fix it with the reserved steel bar at one end of the wet joint; Step 2: Then stretch the guard plate to the designated position at the other end of the wet joint; Step 3: Finally, adjust the short telescopic fixture at the guard plate end and the reserved steel bar at the other end of the wet joint to position and fix it; Step 4: When recovering, the first telescopic rod can be released by adjusting the bolt, and the guard plate can be recovered into the drum through the handle.

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