Vacuum adsorption lifting appliance applied to shield steel pipe piece and using method of vacuum adsorption lifting appliance

Abstract

The invention discloses a vacuum adsorption lifting appliance applied to a shield steel pipe piece and a using method thereof.The lifting appliance comprises a top plate matched with the shield steel pipe piece in radian, a bottom plate, a radial stiffening plate and an axial stiffening plate, the radial stiffening plate and the axial stiffening plate are connected between the top plate and the bottom plate, and evenly-distributed bolts and cushion blocks connected with the bolts in a threaded mode penetrate through the four edges of the bottom plate; the cushion block is arranged on the shield steel pipe piece, and a vacuum suction cup positioning hole is formed in the top plate. According to the invention, the problem of fire safety caused by welding and cutting operation and the problem of influence of dense smoke on air in a tunnel are avoided, the shield tunneling machine can work continuously, and the shield tunneling machine has the advantages of high safety, high reliability, good stability and high shield construction efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of shield engineering, and in particular to a vacuum adsorption hanger applied to a shield steel pipe segment and a use method thereof. Background Art

[0002] The shield method is used in the construction of tunnel projects. The application of shield tunnels is becoming more and more widespread, from early highway tunnels and railway tunnels to drainage tunnels, nuclear power tunnels and subway tunnels. The commonly used shield construction is a single-hole double-line tunnel. It is necessary to assemble steel pipe segments after the shield machine has excavated a certain distance so that the connecting channel can be constructed after the tunnel is connected. When assembling steel pipe segments, special hoists are required for lifting and assembling steel pipe segments. Traditional hoists and steel pipe segments are connected by electric welding. After assembly, the shield machine needs to be suspended for cutting operations. There are problems such as fire safety caused by electric welding and cutting operations, the impact of thick smoke on the air in the tunnel, and the shield machine cannot be advanced for a long time due to electric welding operations. The safety and continuity of tunnel construction are difficult to guarantee. Summary of the invention

[0003] The purpose of the present invention is to provide a vacuum adsorption hanger for shield steel segments and a method of using the same, so as to solve the problem of poor safety in welding the hanger to the shield steel segments and affecting the continuous construction of the shield machine.

[0004] In order to solve the above technical problems, the present invention provides a vacuum adsorption hanger for shield steel pipe segments, comprising: a top plate and a bottom plate matching the curvature of the shield steel pipe segments, and a radial stiffening plate and an axial stiffening plate connected therebetween, the four sides of the bottom plate are penetrated by evenly distributed bolts and threaded pads thereof, the pads are arranged on the shield steel pipe segments, and a vacuum suction cup positioning hole is arranged on the top plate.

[0005] Furthermore, in the vacuum adsorption hanger for shield steel segments provided by the present invention, both the radial stiffening plates and the axial stiffening plates are provided with weight-reducing holes.

[0006] Furthermore, in the vacuum adsorption hanger for shield steel pipe segments provided by the present invention, the weight-reducing holes are waist-shaped holes.

[0007] Furthermore, in the vacuum adsorption hanger for shield steel segments provided by the present invention, the area of ​​the top plate is greater than the area of ​​the bottom plate.

[0008] Furthermore, in the vacuum adsorption hanger for shield steel segments provided by the present invention, the bolts are supported on the bottom plate through gaskets.

[0009] Furthermore, in the vacuum adsorption hanger for shield steel segments provided by the present invention, the pad is an equilateral right-angled pad.

[0010] In order to solve the above technical problems, the present invention also provides a method for using the above vacuum adsorption hanger for shield steel segments, comprising:

[0011] The pad is set on the shield steel segment, and the pad is threadedly connected to the pad of the shield steel segment through bolts passing through the bottom plate, so that the vacuum adsorption hanger applied to the shield steel segment is bolted to the shield steel segment;

[0012] Place the vacuum suction cup on the vacuum suction cup positioning hole of the top plate to vacuum-absorb and hoist the shield steel pipe segment with the vacuum adsorption hoist and the shield steel pipe segment connected with the bolts;

[0013] After the adjacent shield steel pipe segments are spliced ​​together, the vacuum adsorption hanger used for the shield steel pipe segments is removed from the shield steel pipe segments by removing the bolts.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The vacuum adsorption hanger for shield steel pipe segments provided by the present invention and the use method thereof mainly include a main hanger composed of a top plate, a bottom plate and a radial stiffening plate and an axial stiffening plate therebetween which match the curvature of the shield steel pipe segments, and bolts passing through the bottom plate of the main hanger through the four sides and bolted to a pad arranged on the shield steel pipe segments, so that the vacuum adsorption hanger connected by the bolts is integrally lifted with the shield steel pipe segments by adsorbing the vacuum suction cup on the top plate, thereby avoiding the welding and cutting operations of the traditional vacuum adsorption hanger and the shield steel pipe segments, and avoiding the fire safety problems caused by the welding operations and the influence of thick smoke on the air in the tunnel. After the adjacent shield steel pipe segments are spliced, the vacuum adsorption hanger and the shield steel pipe segment can be separated by removing the bolts, avoiding the fire hazard and time-consuming problems caused by the cutting operation required when welding. Since the vacuum adsorption hanger and the shield steel pipe segment are bolted, there is no fire problem caused by welding and cutting operations, and the excavation operation of the shield machine can be carried out continuously without waiting for the original welding and cutting operations, thereby not affecting the construction progress of the shield machine, improving the safety and stability of the shield steel pipe segment in the overall lifting and assembly project, greatly improving the overall work efficiency of the shield construction, and saving manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure of the vacuum adsorption hanger used for shield steel segments;

[0017] Figure 2 It is a schematic diagram of the main structure of the vacuum adsorption hanger used for shield steel pipe segments and the shield steel pipe segments connected thereto;

[0018] Figure 3 yes Figure 2Enlarged view of part A in the middle;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the pads on the shield steel segments distributed in radial and axial directions;

[0020] Figures 5 and 6 It is a three-dimensional structural diagram of a vacuum adsorption hanger used for shield steel segments and the shield steel segments connected thereto;

[0021] Figure 7 It is a schematic diagram of the structure of the vacuum adsorption hanger applied to the shield steel pipe segment and the shield steel pipe segment connected thereto in a connected state;

[0022] Figure 8 It is a three-dimensional structural schematic diagram of the vacuum adsorption hanger in the radial direction and the shield steel pipe segments connected thereto in a connected state;

[0023] As shown in the figure:

[0024] 100. Vacuum adsorption hanger used for shield steel segments;

[0025] 110, top plate, 111, vacuum suction cup positioning hole, 120, bottom plate, 130, radial stiffening plate, 131, weight reduction hole, 140, axial stiffening plate, 150, bolt, 151, gasket, 160, cushion block;

[0026] 200. Shield steel segment. DETAILED DESCRIPTION

[0027] The present invention is described in detail below in conjunction with the accompanying drawings: The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0028] Please refer to Figures 1 to 8 The embodiment of the present invention provides a vacuum adsorption hanger 100 for shield steel pipe segments, comprising: a top plate 110 matching the curvature of the shield steel pipe segment 200, a bottom plate 120, and a radial stiffening plate 130 and an axial stiffening plate 140 connected therebetween, the four sides of the bottom plate 120 are penetrated by evenly distributed bolts 150 and threaded pads 160, the pads 160 are arranged on the shield steel pipe segment 200, and the top plate 110 is provided with vacuum suction cup positioning holes 111.

[0029] The embodiment of the present invention further provides a method for using the vacuum adsorption hanger 100 for shield steel segments, comprising:

[0030] Step 301, set the pad 160 on the shield steel pipe segment 200, and thread the pad 160 of the shield steel pipe segment 200 through the bolt 150 passing through the bottom plate 120, so that the vacuum adsorption hanger 100 applied to the shield steel pipe segment is connected with the shield steel pipe segment 200 by bolts 150.

[0031] Step 302 , place the vacuum suction cup on the vacuum suction cup positioning hole 111 of the top plate 110 , and perform vacuum suction lifting of the vacuum suction hoist 100 used for the shield steel pipe segment and the shield steel pipe segment 200 connected with the bolts 150 .

[0032] Step 303 , after the adjacent shield steel segments 200 are spliced ​​together, the vacuum adsorption hanger 100 applied to the shield steel segment is removed from the shield steel segment 200 by removing the bolts 150 .

[0033] Please focus on Figure 2 , Figures 5 and 6 The vacuum adsorption hanger 100 for shield steel pipe segments provided by the embodiment of the present invention and the use method thereof mainly include a main hanger composed of a top plate 110, a bottom plate 120, and a radial stiffening plate 130 and an axial stiffening plate 140 between the top plate 110 and the bottom plate 120 matching the curvature of the shield steel pipe segment 200, and a base plate 150 passing through the bottom plate 120 of the main hanger and bolted to a pad 160 arranged on the shield steel pipe segment 200 by bolts 150 on all sides, so that the vacuum adsorption hanger 100 connected by the bolts 150 is integrally hoisted on the top plate 110 by the vacuum suction cup, thereby avoiding the welding and cutting operations of the traditional vacuum adsorption hanger 100 and the shield steel pipe segment 200, and avoiding the dynamic vibration caused by the welding operation. Fire safety issues and the impact of thick smoke on the air in the tunnel can be solved by removing the bolts 150 after the adjacent shield steel pipe segments 200 are spliced, so that the vacuum adsorption hanger 100 and the shield steel pipe segment 200 can be separated, avoiding the fire hazard and time-consuming problems caused by the need to share the cutting operation in the welding method; since the vacuum adsorption hanger 100 and the shield steel pipe segment 200 connected by the bolts 150 do not have the fire problem caused by welding and cutting operations, the tunneling operation of the shield machine can be carried out continuously without waiting for the original welding and cutting operations, thereby not affecting the construction progress of the shield machine, improving the safety and stability of the shield steel pipe segment 200 in the overall hoisting and assembly project, greatly improving the overall work efficiency of the shield construction, and saving manpower and material resources. The main hanger includes radial stiffening plates 130 and axial stiffening plates 140, which can improve its structural strength, prevent its structural deformation, and improve its reuse rate.

[0034] Please refer to Figure 1 to Figure 2 , Figures 5 to 8In order to reduce the weight of the vacuum adsorption hanger 100 and ensure the safety of the hoisting, the vacuum adsorption hanger 100 for shield steel pipe segments provided in the embodiment of the present invention has weight-reducing holes 131 on the radial stiffening plates 130 and the axial stiffening plates 140. The weight-reducing holes 131 may be waist-shaped holes. The weight-reducing holes 131 reduce the weight of the main hanger composed of the top plate 110, the bottom plate 120, the radial stiffening plates 130 and the axial stiffening plates 140, and ensure the structural stability of the main hanger. The main hanger can be welded outside the tunnel.

[0035] Please refer to Figure 1 and Figure 6 In order to ensure reliable adsorption connection with the vacuum suction cup, the vacuum suction hanger 100 for shield steel pipe segments provided by the embodiment of the present invention has an area of ​​the top plate 110 that is larger than the area of ​​the bottom plate 120. The vacuum suction cup positioning hole 111 can align the center of the vacuum suction cup on the top plate 110 of the vacuum suction hanger 100 to avoid vacuum leakage caused by deviation, thereby improving the reliability of the vacuum suction cup adsorbing on the shield steel pipe segment 200.

[0036] Please refer to Figure 3 In order to improve the reliability of the connection between the vacuum adsorption hanger 100 and the shield steel pipe segment 200, the vacuum adsorption hanger 100 for the shield steel pipe segment provided by the embodiment of the present invention has the bolt 150 resting on the bottom plate 120 through the gasket 151. The depth of the bolt 150 penetrating into the pad 160 is adjusted through the gasket 151 to adjust the arc and reliability of the connection between the vacuum adsorption hanger 100 and the shield steel pipe segment 200. The gasket 151 includes but is not limited to a plane gasket, a spring gasket, etc.

[0037] Please refer to Figure 3 to Figure 4 In order to improve the reliability of the cushion block 160 being set on the shield steel segment 200, the vacuum adsorption hanger 100 for the shield steel segment provided by the embodiment of the present invention is an equilateral right-angle cushion block 160. The equilateral right-angle shape reliably contacts the arc surface of the shield steel segment 200 and the structure perpendicular to the arc surface, thereby ensuring the reliability of the cushion block 160 being set on the shield steel segment 200.

[0038] The present invention is not limited to the above-mentioned specific implementation modes. Obviously, the above-mentioned embodiments are only some embodiments of the embodiments of the present invention, but not all embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention. Those skilled in the art can make other levels of modifications and changes to the present invention. In this way, if these modifications and changes of the present invention fall within the scope of the claims of the present invention, the present invention is also intended to include these changes and changes.

Claims

1. A vacuum adsorption hanger for shield steel segments, characterized in that: include: A top plate, a bottom plate and a radial stiffening plate and an axial stiffening plate connected therebetween match the curvature of the shield steel pipe segment. The four sides of the bottom plate are penetrated by evenly distributed bolts and pads connected by threads. The pads are arranged on the shield steel pipe segment. The top plate is provided with vacuum suction cup positioning holes.

2. The vacuum adsorption hanger for shield steel segments according to claim 1 is characterized in that: The radial stiffening plates and the axial stiffening plates are both provided with weight-reducing holes.

3. The vacuum adsorption hanger for shield steel segments according to claim 2 is characterized in that: The weight-reducing hole is a waist-shaped hole.

4. The vacuum adsorption hanger for shield steel segments according to claim 1 is characterized in that: The area of ​​the top plate is greater than that of the bottom plate.

5. The vacuum adsorption hanger for shield steel segments according to claim 1 is characterized in that: The bolts are pressed against the bottom plate via gaskets.

6. The vacuum adsorption hanger for shield steel segments according to claim 1 is characterized in that: The cushion block is an equilateral right-angled cushion block.

7. A method for using a vacuum adsorption hanger for shield steel segments according to any one of claims 1 to 6, characterized in that: include: The pad is set on the shield steel segment, and the pad is threadedly connected to the pad of the shield steel segment through bolts passing through the bottom plate, so that the vacuum adsorption hanger applied to the shield steel segment is bolted to the shield steel segment; Place the vacuum suction cup on the vacuum suction cup positioning hole of the top plate to vacuum-absorb and hoist the shield steel pipe segment with the vacuum adsorption hoist and the shield steel pipe segment connected with the bolts; After the adjacent shield steel pipe segments are spliced ​​together, the vacuum adsorption hanger used for the shield steel pipe segments is removed from the shield steel pipe segments by removing the bolts.

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