Concrete crane beam replacing device

Abstract

A concrete crane beam replacing device belongs to the technical field of industrial buildings. The device comprises a screw rod, an electric loop chain elevator and a steel wire rope, holes are formed in the upper portion of a stand column at the position of a crane beam and a middle roof frame beam, steel bars are planted in the holes, holes are formed in the upper end and the lower end of a steel plate, the upper end of the steel plate is hung on the screw rod, and the electric loop chain elevator is hung in the holes in the lower end. The two sides of each column are each provided with a first electric loop chain elevator in a hanging mode, and the middle roof frame beam is provided with a second electric loop chain elevator in a hanging mode. By using the device, steel can be saved, the use of large hoisting equipment is reduced, high-altitude operation is reduced, the quality problem is reduced, the construction period is shortened, the debugging process is optimized, the construction cost can be effectively saved, the construction period is shortened, the precision is improved, and the construction site is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of industrial building technology, specifically relating to a device for replacing concrete crane beams. Background Technology

[0002] Overhead cranes are horizontal lifting equipment placed above factory buildings and warehouses for lifting and transporting materials. Due to the high frequency of use and heavy loads, the strength of the concrete crane beams continuously decreases, reaching the end of their service life and posing safety hazards. Replacement of the crane beams is necessary, but due to limitations, replacement often faces numerous difficulties. Utility Model Content

[0003] In order to save construction time for replacing concrete crane beams, improve safety positioning, reduce cross-operations, improve work efficiency, and ensure benefits, this utility model proposes a concrete crane beam replacement device.

[0004] A concrete crane beam replacement device is characterized by comprising a screw rod, an electric chain hoist, and a wire rope. Holes are drilled above the columns where the crane beam is located and on the intermediate roof frame beam, and the screw rod is inserted into the holes. Holes are made at both the upper and lower ends of a steel plate, with the upper end suspended on the screw rod and the electric chain hoist suspended in the hole at the lower end. A first electric chain hoist is suspended on each side of each column, and a second electric chain hoist is suspended on the intermediate roof frame beam.

[0005] Furthermore, the first electric chain hoist has a load capacity of 3t, and the second electric chain hoist has a load capacity of 5t.

[0006] Furthermore, the screw is an M20×330 fully threaded screw, and anchoring adhesive is used for anchoring.

[0007] Furthermore, the hole size is φ22 and the hole depth is 220mm.

[0008] The beneficial effects of this utility model are: saving steel, reducing the use of large hoisting equipment, reducing high-altitude operations, reducing quality problems, shortening the construction period, optimizing the debugging process, and effectively saving construction costs, shortening the construction period, improving accuracy, and reducing the construction site. It achieves low carbon and environmental protection. The construction progress, materials, personnel and machinery plans are guided by precise data, which accelerates the connection between various processes, reduces unnecessary rework, and ensures construction safety. Attached Figure Description

[0009] Figure 1 This is a front elevation view of the concrete crane beam replacement device.

[0010] Figure 2 Side elevation view of the concrete crane beam replacement device.

[0011] Wherein: 1-screw, 2-steel plate, 3-first electric chain hoist, 4-second electric chain hoist, 5-wire rope, 6-crane beam. Detailed Implementation

[0012] Example 1: A company's electrolysis workshop crane beam replacement project required the removal of 160 concrete crane beams. To expedite the construction process, the crane beams were broken and cut, and a concrete crane beam replacement device was used to replace the dismantled beams. The concrete crane beam replacement device includes a screw rod 1, an electric chain hoist, and a wire rope 5. Holes were drilled above the columns and on the middle roof frame beam at the location of the crane beam 6. The hole size was φ22, and the hole depth was 220mm. Rebar screw rods 1, M20×330 fully threaded screw rods, were installed in the holes using HIT-RE500 rebar adhesive. The steel plate 2 has holes at both the top and bottom, and the upper end is suspended on the screw rod 1, while the lower end has holes in which an electric chain hoist is suspended. The electric chain hoist includes a first electric chain hoist 3 and a second electric chain hoist 4. One first electric chain hoist 3 is suspended on each side of each column, and one second electric chain hoist 4 is suspended on the middle roof frame beam. The first electric chain hoist 3 has a load capacity of 3t, and the second electric chain hoist 4 has a load capacity of 5t.

[0013] The first electric chain hoist 3 has a self-weight of 50kg, or 500N, and the weight of the object it lifts is approximately 3.57t, or 35700N. A concrete crane beam 6 is lifted and lowered using two first electric chain hoists 3 at both ends. This means that the weight of the object lifted by one first electric chain hoist 3 is half that of the concrete beam, i.e., 3.57t ÷ 2 = 1.785t (i.e., 17850N). The tensile strength test is calculated as follows:

[0014] T = Q_object + Q_self-weight = 17850 + 500 = 18350 N = 18.35 kN

[0015] The design tensile force of M20 is 62.9KN (shear force 54.0KN) > T = (18.35KN), which meets the requirements.

Claims

1. A concrete crane beam replacement device, characterized in that: The system includes screws, electric chain hoists, and wire ropes. Holes are drilled above the columns where the crane beam is located and on the middle roof frame beam, and screws are installed in the holes. Holes are made at both the top and bottom of the steel plate, with the upper end suspended from the screws and the lower end suspended from the hole. A first electric chain hoist is suspended on each side of each column, and a second electric chain hoist is suspended on the middle roof frame beam.

2. The concrete crane beam replacement device as described in claim 1, characterized in that... The first electric chain hoist has a load capacity of 3t, and the second electric chain hoist has a load capacity of 5t.

3. The concrete crane beam replacement device as described in claim 1, characterized in that... The screw is an M20×330 fully threaded screw, and anchoring adhesive is used for anchoring.

4. The concrete crane beam replacement device as described in claim 1, characterized in that... The hole size is φ22 and the hole depth is 220mm.

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