Prefabricated slab hoisting device for road

Abstract

The road precast slab hoisting device comprises an upper steel wire rope, a hoisting frame, a lower steel wire rope, a threaded hoisting rod and four internal threaded sleeves which are arranged from top to bottom, and the four internal threaded sleeves are pre-embedded in the inner sides of the four corners of a road precast slab; the hoisting device is characterized in that the hoisting frame is rectangular, four upper hoisting rings and four lower hoisting rings are fixed on the hoisting frame, the lower ends of upper steel wire ropes are tied on the upper hoisting rings, the upper ends of lower steel wire ropes are tied on the lower hoisting rings, and threaded hoisting rods are fixed at the lower ends of the lower steel wire ropes; and a rectangle formed by taking the four lower hanging rings as vertexes is equal to a rectangle formed by taking the four internal thread sleeves as vertexes. According to the road precast slab hoisting device disclosed by the utility model, the threaded hoisting rod is only subjected to vertical tension, so that the phenomenon that the threaded hoisting rod is bent and deformed is avoided, the mounting progress is accelerated, the previous cutting of the hoisting ring and the grinding and rust-proof treatment of the cutting part of the hoisting ring are avoided, and the mounting precision of a road precast slab can be ensured.

Description

Technical Field

[0001] The utility model relates to a road prefabricated board installation technology, and more specifically, to a road prefabricated board hoisting device. Background Art

[0002] With the rapid development of my country's economy, heavy-load traffic is increasing. Compared with asphalt pavement, prefabricated reinforced concrete pavement has better bearing capacity. Therefore, there are more and more prefabricated reinforced concrete pavements suitable for heavy-load traffic. Prefabricated reinforced concrete pavement is assembled from prefabricated road panels. After the prefabricated road panels are prefabricated in the factory, they are transported to the site for assembly. The installation of prefabricated road panels is an important guarantee for the quality of the road. Usually, the prefabricated road panels are pre-buried with lifting rings, and steel wire ropes are tied to the lifting rings for lifting. After the prefabricated road panels are installed, the lifting rings are cut off. The upper end of the rings needs to be smoothed and rust-proofed. This is not only uneconomical but also affects the installation progress.

[0003] At present, although some prefabricated road panels are installed with screw hangers, that is, the screw hangers are screwed into the threaded sleeves embedded in the road prefabricated panels through threaded matching, the steel wire rope connected to the screw hangers is inclined to the center point during crane hoisting, which makes it impossible to ensure that the screw hangers are in a vertical state during hoisting, which easily leads to deformation of the screw hangers and also affects the installation progress and quality. Summary of the invention

[0004] In order to overcome the disadvantages of the above technical problems, the utility model provides a road prefabricated board hoisting device.

[0005] The utility model discloses a road prefabricated board hoisting device, comprising an upper steel wire rope, a hoisting frame, a lower steel wire rope, a threaded hanging rod and an internal threaded sleeve which are arranged from top to bottom, the number of the lower steel wire rope, the threaded hanging rod and the internal threaded sleeve are all 4, and the 4 internal threaded sleeves are pre-buried in the inner sides of the four corners of the road prefabricated board; the utility model is characterized in that: the hoisting frame is rectangular, and four upper hanging rings facing upward and four lower hanging rings facing downward are fixed on the hoisting frame, the lower end of the upper steel wire rope is tied to the upper hanging ring, the upper ends of the four lower steel wire ropes are respectively tied to the lower hanging rings, and the four threaded hanging rods are respectively fixed to the lower ends of the four lower steel wire ropes; when the prefabricated board is hoisted, the threaded hanging rod is screwed into the internal threaded sleeve by means of threaded connection; the rectangle formed by the four lower hanging rings as vertices is equal to the rectangle formed by the four internal threaded sleeves as vertices.

[0006] The utility model discloses a road prefabricated board hoisting device, wherein the hoisting frame is composed of two mutually parallel cross beams and four mutually parallel longitudinal beams, and the two cross beams are connected via the four longitudinal beams.

[0007] The utility model discloses a road prefabricated board lifting device, wherein the lower end of the upper steel wire rope is detachably connected to the upper lifting ring via an upper U-shaped buckle, and a steel lifting ring is fixed to the upper end of the threaded hanging rod, and the steel lifting ring is detachably connected to the lower end of the lower steel wire rope via a lower U-shaped buckle.

[0008] In the utility model of the road prefabricated plate hoisting device, four anchoring steel bars with hook-shaped lower ends are evenly fixed on the outer surface of the internal threaded sleeve.

[0009] The utility model discloses a road prefabricated board hoisting device, wherein the upper steel wire ropes are two of equal lengths, and when the road prefabricated board is hoisted, the hook of the crane is hung at the middle of the two upper steel wire ropes.

[0010] In the utility model of the road prefabricated board hoisting device, the distance between the upper end surface of the internal threaded sleeve and the upper surface of the road prefabricated board is 0.1mm-30mm, and the port of the internal threaded sleeve is sealed with a plug before the road prefabricated board is prefabricated.

[0011] The utility model provides a device for hoisting road prefabricated panels, wherein the diameter of the threaded hanger is 18 mm to 20 mm, the length of the threaded hanger is not less than 12 cm, the inner diameter of the internal threaded sleeve is 18 mm to 20 mm, and the length of the internal threaded sleeve is not less than 12 cm; when hoisting the road prefabricated panels, the length of the threaded hanger screwed into the internal threaded sleeve is not less than 8 cm.

[0012] The utility model discloses a road prefabricated board hoisting device. After the road prefabricated board is hoisted, the inside of the internal thread sleeve is filled with epoxy cement resin mortar.

[0013] The beneficial effects of the utility model are as follows: the road prefabricated board hoisting device of the utility model is provided with an upper steel wire rope, a hoisting frame, a lower steel wire rope, a threaded hanging rod and an internal threaded sleeve from top to bottom, the upper end of the upper steel wire rope and the upper end of the lower steel wire rope are respectively tied to the upper and lower lifting rings on the hoisting frame, the upper end of the threaded rod is fixed to the lower end of the lower steel wire rope, the internal threaded sleeve is pre-buried in the road prefabricated board, and the rectangle formed by the four lower lifting rings as vertices is equal to the rectangle formed by the four internal threaded sleeves as vertices, so that when the road prefabricated board is hoisted, the threaded hanging rod is screwed into the internal threaded sleeve, and the hook of the crane lifts the upper After the wire rope is lifted, the four lower wire ropes and the four threaded hangers are all in a vertical state perpendicular to the prefabricated road panels. The threaded hangers are only subjected to vertical tension but not inclined tension, thus avoiding bending and deformation of the threaded hangers and realizing horizontal lifting of the prefabricated road panels. After the prefabricated road panels are lifted, the threaded hangers are unscrewed from the internal threaded sleeves and filled with epoxy cement resin mortar, which speeds up the installation progress and avoids the previous cutting of the lifting rings and the smoothing and rust-proofing of the parts where the lifting rings are cut, while ensuring the horizontal installation of the prefabricated road panels and the installation accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the road prefabricated board hoisting device of the utility model;

[0015] Figure 2 This is the front view of the hanging frame in the utility model;

[0016] Figure 3 It is a left view of the hanging frame in the utility model;

[0017] Figure 4 It is a top view of the hanging frame in the utility model;

[0018] Figure 5 for Figure 1 A partial enlarged view of the middle A area;

[0019] Figure 6 This is a usage diagram of the road prefabricated panel lifting device of the utility model.

[0020] In the figure: 1 lifting frame, 2 upper steel wire rope, 3 lower steel wire rope, 4 threaded lifting rod, 5 internal threaded sleeve, 6 road prefabricated plate, 7 upper lifting ring, 8 lower lifting ring, 9 cross beam, 10 longitudinal beam, 11 upper U-shaped clip, 12 lower U-shaped clip, 13 steel lifting ring, 14 anchor steel bar, 15 crane, 16 hook. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] like Figure 1 As shown, a schematic diagram of the structure of the road prefabricated board hoisting device of the utility model is given. Figure 2 , Figure 3 and Figure 4 The front view, left view and top view of the hanging frame in the utility model are given. Figure 5 Given Figure 1 A partial enlarged view of area A in the middle. Figure 6 A diagram showing the use state of the road prefabricated board hoisting device of the utility model is provided. The road prefabricated board hoisting device shown is composed of an upper steel wire rope 2, a hoisting frame 1, a lower steel wire rope 3, a threaded suspension rod 4 and an internal threaded sleeve 5 arranged from top to bottom. The upper steel wire rope 2 is used to cooperate with the hook 16 of the crane 15. The hoisting frame 1 is rectangular, and four upper lifting rings 7 facing upward and four lower lifting rings 8 facing downward are fixed on the four corners of the hoisting frame 1. The number of the lower steel wire rope 3, the threaded suspension rod 4 and the internal threaded sleeve 5 is 4, the upper ends of the four lower steel wire ropes 3 are respectively tied to the four lower suspension rings 8, and the upper ends of the four threaded suspension rods 4 are respectively fixed to the lower ends of the four lower steel wire ropes 3.

[0023] The four internal threaded sleeves 5 shown are embedded in the inner side of the four corners of the road prefabricated board 6. When the road prefabricated board 6 is hoisted, the four threaded suspension rods 4 are respectively screwed into the four internal threaded sleeves 5. The rectangle with the four lower suspension rings 8 as vertices is equal to the rectangle with the four internal threaded sleeves 5 as vertices. In this way, when the road prefabricated board 6 is hoisted, after the hoisting frame 1 is hoisted by the crane 15, the four lower steel wire ropes 3 and the four threaded suspension rods 4 will all be in a vertical state and perpendicular to the upper surface of the road prefabricated board 6. In this way, since the threaded suspension rod 4 is in a vertical state, it will only be subjected to vertical tension, but not inclined tension, so that the threaded suspension rod 4 will not bend during the long-term hoisting process, ensuring that the threaded suspension rod 4 and the internal threaded sleeve 5 can be smoothly and quickly disassembled and assembled each time, ensuring the horizontal installation accuracy of the road prefabricated board 6, and speeding up the installation progress of the road prefabricated board.

[0024] Compared with the existing method of embedding the lifting ring in the road prefabricated plate 6, there is no need to cut the lifting ring, and there is no need to grind and rust-proof the cut lifting ring. Compared with the existing method of embedding the screw rod hanging rod in the road prefabricated plate, the screw rod hanging rod will not be bent.

[0025] The hanging frame 1 shown is composed of two cross beams 9 and four longitudinal beams 10. The two cross beams 9 are arranged in parallel and connected by four longitudinal beams 10. The four longitudinal beams 10 are also parallel to each other, and the cross-sectional area of ​​the cross beam 9 is larger than the cross-sectional area of ​​the longitudinal beam 10. In this way, the two cross beams 9 and the four longitudinal beams 10 form a stable rectangular hanging frame 1.

[0026] There are two upper steel wires 2, and both ends of each upper steel wire 2 are fixed to two upper hoisting rings 7 via upper U-shaped buckles 11. The two upper steel wires 2 are of equal length. When the prefabricated road panel 6 is hoisted, the hook 16 of the crane 15 is hung in the middle of the two upper steel wires. In this way, the hoisting frame 1 and the prefabricated road panel 6 can be hoisted horizontally to facilitate placement in the desired position.

[0027] The upper end of the threaded suspension rod 4 is welded with a steel suspension ring 13, which is connected to the lower end of the lower steel wire rope 3 via a lower U-shaped buckle 12. Due to the use of the lower U-shaped buckle 12, the threaded suspension rod 4 can be easily removed from the lower steel wire rope 3, making it easy to screw the threaded suspension rod 4 into the internal threaded sleeve 5 and to rotate it out of the internal threaded sleeve 5. In order to realize the anchoring of the internal threaded sleeve 5 in the road prefabricated board 6, four anchoring steel bars with hook-shaped lower ends are evenly fixed on the outer surface of the internal threaded sleeve 5.

[0028] As a specific size requirement, the distance between the upper end face of the internal threaded sleeve 5 and the upper surface of the road prefabricated board 6 is 0.1mm~30mm, and the port of the internal threaded sleeve 5 is sealed with a plug before the road prefabricated board 6 is prefabricated. The diameter of the threaded hanger 4 is 18mm~20mm, the length of the threaded hanger 4 is not less than 12cm, the inner diameter of the internal threaded sleeve 5 is 18mm~20mm, and the length of the internal threaded sleeve 5 is not less than 12cm; when the road prefabricated board 6 is hoisted, the length of the threaded hanger 4 screwed into the internal threaded sleeve 5 is not less than 8cm. After the road prefabricated board 6 is hoisted, the inside of the internal threaded sleeve 5 is filled with epoxy cement resin mortar.

Claims

1. A road prefabricated panel hoisting device, comprising an upper steel wire rope (2), a hoisting frame (1), a lower steel wire rope (3), a threaded hanging rod (4) and an internally threaded sleeve (5) arranged from top to bottom, wherein the number of the lower steel wire rope, the threaded hanging rod and the internally threaded sleeve is four, and the four internally threaded sleeves are pre-buried inside the four corners of the road prefabricated panel (6); characterized in that: The hoisting frame is rectangular, and is fixed with four upper hoisting rings (7) facing upward and four lower hoisting rings (8) facing downward. The lower end of the upper steel wire rope is tied to the upper hoisting ring, and the upper ends of the four lower steel wire ropes are respectively tied to the lower hoisting rings. The four threaded hoisting rods are respectively fixed to the lower ends of the four lower steel wire ropes. When the prefabricated panel is hoisted, the threaded hoisting rods are screwed into the internal threaded sleeves by thread connection. The rectangle formed by the four lower hoisting rings as vertices is equal to the rectangle formed by the four internal threaded sleeves as vertices.

2. The prefabricated road slab hoisting device according to claim 1 is characterized in that: The hanging frame (1) is composed of two mutually parallel cross beams (9) and four mutually parallel longitudinal beams (10), and the two cross beams are connected via the four longitudinal beams.

3. The prefabricated road slab hoisting device according to claim 1 or 2, characterized in that: The lower end of the upper steel wire rope (2) is detachably connected to the upper lifting ring (7) via an upper U-shaped buckle (11), and a steel lifting ring (13) is fixed to the upper end of the threaded lifting rod (4), and the steel lifting ring is detachably connected to the lower end of the lower steel wire rope (3) via a lower U-shaped buckle (12).

4. The road prefabricated board hoisting device according to claim 1 or 2, characterized in that: Four anchoring steel bars (14) with hook-shaped lower ends are evenly fixed on the outer surface of the internally threaded sleeve (5).

5. The prefabricated road slab hoisting device according to claim 1 or 2, characterized in that: The upper steel wire ropes (2) are two of equal length. When the road prefabricated slab is hoisted, the hook (16) of the crane (15) is hung at the middle of the two upper steel wire ropes.

6. The road prefabricated board hoisting device according to claim 1 or 2, characterized in that: The distance between the upper end surface of the internally threaded sleeve (5) and the upper surface of the road prefabricated board (6) is 0.1 mm to 30 mm, and the end of the internally threaded sleeve is sealed with a plug before the road prefabricated board is prefabricated.

7. The prefabricated road slab hoisting device according to claim 1 or 2, characterized in that: The diameter of the threaded hanger (4) is 18 mm to 20 mm, and the length of the threaded hanger is not less than 12 cm. The inner diameter of the internal threaded sleeve (5) is 18 mm to 20 mm, and the length of the internal threaded sleeve is not less than 12 cm. When the road prefabricated panel (6) is hoisted, the length of the threaded hanger screwed into the internal threaded sleeve is not less than 8 cm.

8. The prefabricated road slab hoisting device according to claim 1 or 2, characterized in that: After the prefabricated road panel (6) is hoisted, the inside of the internal threaded sleeve (5) is filled with epoxy cement resin mortar.

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