Shield machine soil bin cutter salvage device

Abstract

The present invention discloses a shield machine soil bin tool salvage device, the shield machine is provided with a cutter disc and a slag stirring rod, one end of the slag stirring rod is welded to the cutter disc, and the other end extends axially into the soil bin, the shield machine soil bin tool salvage device comprises a mounting sleeve and a salvage device, the mounting sleeve has a semi-enclosed tube cavity adapted to be matched with the slag stirring rod, the semi-enclosed tube cavity is suitable for sleeved the slag stirring rod from the outside of the slag stirring rod along the radial direction of the cutter disc inward, the salvage device has a salvage device bottom plate, a steel plate grid composed of a plurality of mutually parallel steel plates is fixed on the salvage device bottom plate, the salvage device bottom plate is closed to the opening of the semi-enclosed tube cavity of the mounting sleeve, the salvage device bottom plate and the mounting sleeve are detachably fixedly connected and jointly enclose a closed tube cavity for accommodating the slag stirring rod. The present invention has many advantages such as simple operation, convenient manufacturing and processing, high safety, short operation time, etc., and has obvious benefits in shield construction.

Description

Technical Field

[0001] The invention relates to the salvage of a cutter dropped in a soil bin of a shield machine. Background Art

[0002] During shield construction, the disc cutter may fall into the soil bin during use or disassembly and assembly. Due to its heavy weight and large size, it may cause damage to the cutter disc, installed disc cutter, soil bin, soil bin wall panels and other parts and components as the cutter disc rotates, which may seriously endanger the safety of equipment and personnel. The fallen cutter must be salvaged.

[0003] The mud shield salvage method uses compressed air when the geological conditions are poor. Divers need to dive into the lower part of the mud pool in the soil bin, bag and transport the undischarged debris. The debris at the bottom of the soil bin needs to be cleaned up, and finally the disc cutter exposed by the debris is hoisted out. The salvage process is long, with high safety risks and high costs. The entire salvage process takes more than 15 days.

[0004] When the earth pressure balance shield machine is being salvaged, when the geological conditions are poor, the geology needs to be reinforced to make it self-stable under normal pressure conditions. Personnel enter the soil bin to clean out the debris that cannot be completely discharged, and then hoist out the fallen disc cutter. Due to the long geological reinforcement cycle, the entire salvage process takes 30 to 60 days. Summary of the invention

[0005] The object of the present invention is to provide a safe, fast and easy-to-operate dropped disc cutter salvage device.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a shield machine soil bin cutter salvage device, the shield machine is provided with a cutter disc and a slag stirring rod, one end of the slag stirring rod is welded to the cutter disc, and the other end extends axially into the soil bin, characterized in that the shield machine soil bin cutter salvage device comprises a mounting sleeve and a salvage device,

[0007] The mounting sleeve has a semi-enclosed tube cavity adapted to be matched with the slag stirring rod, and the semi-enclosed tube cavity is suitable for sleeve-fitting the slag stirring rod from the outside of the slag stirring rod inwardly along the radial direction of the cutter disc.

[0008] The salvage device has a salvage device bottom plate, on which a steel plate grid composed of a plurality of mutually parallel steel plates is fixed. The salvage device bottom plate is enclosed in the open opening of the semi-enclosed tube cavity of the mounting sleeve. The salvage device bottom plate and the mounting sleeve are detachably fixedly connected and together enclose a closed tube cavity for accommodating the slag stirring rod.

[0009] The two side walls of the semi-enclosed tube cavity of the installation sleeve extend outward symmetrically to form a protrusion, and the protrusion is provided with a mounting sleeve bolt hole.

[0010] A mounting sleeve lifting lug is provided below the protruding window.

[0011] The salvage device comprises a first salvage device, on the salvage device bottom plate of the first salvage device is provided a steel plate grid formed by three main steel plates evenly spaced and arranged along the axial direction of the slag stirring rod.

[0012] The salvage device includes a second salvage device, and an extended steel plate grid formed by three main steel plates and a pair of auxiliary steel plates that are evenly arranged along the axial direction of the slag stirring rod is arranged on the salvage device bottom plate. The pair of auxiliary steel plates are symmetrically installed relative to the central axis of the salvage device bottom plate and the outer edges are flush with the outer edges of the main steel plates.

[0013] The main steel plate is a T-shaped steel plate that is larger at the top and smaller at the bottom and is welded and fixed to the bottom plate of the salvage device.

[0014] The main steel plate is provided with a salvage device hoisting hole.

[0015] The device of the present invention is easy to process, convenient and quick to operate on site, has a short operation time and high safety. The present invention can be operated in a compressed air working environment, and does not require or can reduce the geological reinforcement treatment steps. The roller cutter that falls on the bottom of the soil bin can be salvaged, but the salvage device can be installed on the upper part of the soil bin and near the entrance to the soil bin, so that the installers can evacuate quickly in the event of a geological collapse. The components of the salvage device of the present invention are detachably fixedly connected to each other and to the slag stirring rod, and the installation form is simple and quick; at the same time, the salvage device is brought to the bottom of the soil bin by rotating the cutter disc, and there is no need to manually clean the slag at the bottom of the soil bin. The present invention has many advantages such as simple operation, convenient manufacturing and processing, high safety, and short operation time, and has obvious benefits in shield construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the shield machine soil bin cutter salvage device of the present invention being installed on the shield machine.

[0017] Figure 2 It is a forward schematic diagram after the tool salvaging device and the slag stirring rod are installed. At this time, the tool salvaging device uses the first salvage device.

[0018] Figure 3 It is a lateral schematic diagram of the tool salvaging device and the slag stirring rod after installation. At this time, the tool salvaging device uses the first salvage device.

[0019] Figure 4 It is a forward schematic diagram after the tool salvaging device and the slag stirring rod are installed. At this time, the tool salvaging device uses the second salvage device.

[0020] Figure 5 It is a lateral schematic diagram of the tool salvaging device and the slag stirring rod after installation. At this time, the tool salvaging device uses the second salvage device.

[0021] Figure 6 It is a forward schematic diagram of the installation sleeve.

[0022] Figure 7 Schematic diagram of the side view of the installation sleeve.

[0023] Figure 8 It is a forward schematic diagram of the first salvage device.

[0024] Fig. 9 It is a side view schematic diagram of the first salvage device.

[0025] Fig.10 This is a forward schematic diagram of the second salvage device.

[0026] Fig.11 It is a side view schematic diagram of the second salvage device.

[0027] Fig. 12A It is a schematic diagram of installing the shield machine soil bin cutter salvage device of the present invention on a stirring rod.

[0028] Fig. 12B It is a schematic diagram of the shield machine soil bin cutter salvage device of the present invention contacting the fallen disc cutter.

[0029] Fig. 12C It is a schematic diagram of the shield machine soil bin cutter salvaging device of the present invention salvaging a fallen disc cutter.

[0030] In the figure: cutter disc 1, disc cutter 2, soil bin 3, slag 4, slag stirring rod 5, cutter salvage device 6, mounting sleeve 6.1, mounting sleeve avoidance position 6.1.1, mounting sleeve bolt hole 6.1.2, mounting sleeve lifting ear 6.1.3, semi-enclosed pipe cavity 6.1.4,

[0031] First salvage device 6.2, first salvage device bottom plate 6.2.0, first salvage device main steel plate 6.2.1, first salvage device hoisting hole 6.2.2, first salvage device bolt hole 6.2.3,

[0032] Second salvage device 6.3, second salvage device bottom plate 6.3.0, second salvage device main steel plate 6.3.1, second salvage device hoisting hole 6.3.2, second salvage device extension part 6.3.3, auxiliary steel plate 6.3.4, second salvage device bolt hole 6.3.5, mounting bolt 6.4, dropped disc cutter 7, screw machine 8 DETAILED DESCRIPTION

[0033] The shield machine soil bin cutter salvaging device 6 of the present invention comprises a mounting sleeve 6.1 and a salvage device 6.2.

[0034] like Figure 6 and Figure 7As shown, the mounting sleeve 6.1 has a half-enclosed tube cavity 6.1.4, which is suitable for sleeve-fitting the slag stirring rod 5 from the outside (i.e., the far-diameter end) of the slag stirring rod along the radial direction of the cutter disc. The two side walls of the half-enclosed tube cavity extend outward symmetrically to form a protrusion, and the protrusion is provided with a mounting sleeve bolt hole 6.1.2. The mounting sleeve lifting ear 6.1.3 is provided below the protrusion.

[0035] The salvage device includes a first salvage device and a second salvage device used to replace the first salvage device. Figure 8 , Fig. 9 As shown, the first salvage device has a first salvage device bottom plate 6.2.0, on which three first salvage device main steel plates 6.2.1 are welded and fixed. The three first salvage device main steel plates 6.2.1 are evenly arranged along the axial direction of the slag stirring rod, forming a steel plate grid. The first salvage device bottom plate 6.2.0 closes the opening of the semi-enclosed tube cavity of the mounting sleeve, and the mounting bolts 6.4 pass through the mounting sleeve bolt holes 6.1.2 and the first salvage device bolt holes 6.2.3, so that the first salvage device and the mounting sleeve are detachably fixedly connected together, so that they jointly enclose a closed tube cavity for accommodating the slag stirring rod. The main steel plate is provided with a first salvage device hoisting hole 6.2.2.

[0036] like Fig.10 and Fig.11 As shown, the second salvage device has a second salvage device bottom plate 6.3.0, on which three second salvage device main steel plates 6.3.1 and a pair of auxiliary steel plates 6.3.4 are welded and fixed, forming an extended steel plate grid together, and the auxiliary steel plates are symmetrically installed along the axial direction of the salvage device bottom plate and the outer edges are flush with the outer edges of the main steel plates. The connection method between the second salvage device and the mounting sleeve is the same as the connection method between the first salvage device and the mounting sleeve.

[0037] In order to reduce the resistance of the compacted slag 4 at the bottom of the soil bin to the tool salvage device 6 and increase the salvage area, the salvage device is designed in the form of a steel plate grid rather than a solid steel block. In order to increase the length of the salvage device, an extension part and an auxiliary steel plate are added to the front end of the salvage device. Since the front end of the salvage device is close to the bottom of the screw machine and the position space is limited, the auxiliary steel plate is designed as two separate steel plates as the extension part. At the same time, the bottom of the far end of the installation sleeve is tilted inward to form the installation sleeve avoidance position 6.1.1.

[0038] Now, in conjunction with other drawings, the application of the present invention will be described. Fig. 12AAs shown, the cutter head 1 rotates to rotate the soil stirring rod 5 to the upper part of the soil bin and close to the soil bin passage. The hand chain hoist is used to hang the installation sleeve lifting lug 6.1.3, and the installation sleeve 6.1 is radially sleeved with the soil stirring rod 5 from the outside to the inside. The hand chain hoist is used to hang the first salvage device lifting hole 6.2.2, and the first salvage device bolt hole 6.2.3 is aligned with the installation sleeve bolt hole 6.1.2. The installation bolt 6.4 connects the installation sleeve 6.1 and the first salvage device 6.2, and is locked.

[0039] like Fig. 12B As shown, the cutter disc 1 rotates downward, and the installed cutter salvaging device 6 is brought into the lower part of the soil bin 3 to salvage the fallen disc cutter 7 for the first time.

[0040] like Fig. 12C As shown, the salvaged disc cutter 7 is lifted out smoothly. The cutter salvaging device 6 is disassembled.

[0041] If the dropped disc cutter 7 is not salvaged, it is considered that the disc cutter has fallen to the lower part of the screw machine 8 and needs to be replaced with a second salvage device for salvage. Rotate the cutter disc 1 in the opposite direction to turn the cutter salvage device 6 back to the position as shown in the figure. Fig. 12A The upper part of the earth bin and the location of the earth bin passage entrance are shown.

[0042] Use a hand chain hoist to hook the first salvage device's hoisting hole 6.2.2, remove the mounting bolts 6.4, and hoist out the first salvage device 6.2.

[0043] Use a hand chain hoist to hook the second salvage lifting hole 6.3.2, align the second salvage bolt hole 6.3.5 with the mounting sleeve bolt hole 6.1.2. Connect the mounting sleeve 6.1 and the second salvage 6.3 with the mounting bolt 6.4, and tighten.

[0044] The cutter disc 1 rotates downward, and the installed cutter salvaging device 6 is brought into the lower part of the soil bin 3, and the fallen disc cutter 7 is salvaged for the second time.

Claims

1. A shield machine soil bin cutter salvage device, the shield machine is provided with a cutter disc and a slag stirring rod, one end of the slag stirring rod is welded to the cutter disc, and the other end extends axially into the soil bin, characterized in that: The shield machine soil bin cutter salvage device comprises a mounting sleeve and a salvage device. The mounting sleeve has a semi-enclosed tube cavity adapted to be matched with the slag stirring rod, and the semi-enclosed tube cavity is suitable for sleeve-fitting the slag stirring rod from the outside of the slag stirring rod inwardly along the radial direction of the cutter disc. The salvage device comprises a salvage device bottom plate, which is enclosed in the opening of the semi-enclosed tube cavity of the installation sleeve, and the salvage device bottom plate is detachably fixedly connected with the installation sleeve and together encloses a closed tube cavity for accommodating the slag stirring rod, and a steel plate grid composed of a plurality of mutually parallel steel plates is fixed on the salvage device bottom plate. The salvage device comprises a first salvage device and a second salvage device for replacing the first salvage device, and the steel plate grid arranged on the salvage device bottom plate of the first salvage device comprises three main steel plates evenly spaced along the axial direction of the slag stirring rod, and the steel plate grid of the second salvage device is composed of three main steel plates evenly spaced along the axial direction of the slag stirring rod. An extended steel plate grille formed by three main steel plates and a pair of auxiliary steel plates which are evenly arranged along the axial direction of the slag stirring rod is arranged on the bottom plate of the salvage device. The pair of auxiliary steel plates are symmetrically installed relative to the central axis of the bottom plate of the salvage device and the outer edges are flush with the outer edges of the main steel plates. The first salvage device and the mounting sleeve are sleeved on the slag stirring rod to salvage the disc-shaped roller that has fallen into the soil bin. When the disc-shaped roller that has fallen to the lower position of the screw machine is to be salvaged, the first salvage device is disassembled and the second salvage device and the mounting sleeve are sleeved on the slag stirring rod.

2. The shield machine soil bin cutter salvage device according to claim 1, characterized in that: The two side walls of the semi-enclosed tube cavity of the installation sleeve extend outward symmetrically to form a protrusion, and the protrusion is provided with a mounting sleeve bolt hole.

3. The shield machine soil bin cutter salvage device according to claim 2, characterized in that: A mounting sleeve lifting lug is provided below the protruding window.

4. The shield machine soil bin cutter salvage device according to claim 1, characterized in that: The main steel plate is a T-shaped steel plate that is larger at the top and smaller at the bottom and is welded and fixed to the bottom plate of the salvage device.

5. The shield machine soil bin cutter salvage device according to claim 4, characterized in that: The main steel plate is provided with a salvage device hoisting hole.

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