Driving shield rotor

FIELD: mining industry.

SUBSTANCE: rotor is made in form of cylindrical body, on working surface of which cutter holders are radially placed, each of which is made in form of shaft, freely placed in cylindrical groove of rotor body. Along whole length of each cutter holder cutting elements are mounted with hard-alloy inserts. Between cutter holders cutting elements are placed, made in form of rectangular prisms with hard-alloy inserts.

EFFECT: higher efficiency.

3 dwg

 

The invention relates to the field of underground construction, namely, the tunneling shields rotary type, and can be used in the construction of tunnels for various purposes.

Known rotor design tunneling machine in which the rotor is constructed in the form of a cylindrical body, on the working surface of which is fixed cutting elements (patent of great Britain No. 2236340 on CL MCI E 21 D 9/08 from 03.04.91 year).

The disadvantage of this design is that the cutting elements are mounted stationary on the body of the rotor and have no possibility of rotation (deviation) during rotation of the rotor. This reduces the efficiency of the rotor while reducing the performance of the tunneling shield.

The closest technical solution of the essential features is the rotor design described in the patent of Russian Federation № 2151296 in class. E 21 D 9/08 from 20.06.2000, in which the rotor is constructed in the form of a cylindrical body, on the working surface of which there are rotary cutting tools with carbide inserts and slitting elements in the form of rectangular prisms with carbide inserts.

In this construction is the rotation (deviation) of the cutting elements during the rotation of the rotor in the direction opposite to the rotation of the power of resistance to cutting of the soil.

The downside is that h is on the turn (deviation) of the cutting elements is each cutting element individually, when the heterogeneity of the face leads to lack of synchronism, and, consequently, insufficient efficiency of the rotor.

Task to be solved by the claimed invention is directed, is to increase the efficiency of the rotor.

The problem is solved due to the fact that the rotor tunneling shield is made in the form of a cylindrical body, on the working surface of which there are rotary cutting tools with carbide inserts and cut elements in the form of a rocker with carbide inserts, provided with radially arranged on the working surface of the rotor cutter holders, each of which is made in the form of a shaft, freely located in the cylindrical groove of the rotor body, with the cutting elements fixed along the length of the tool holder, and Welt elements are located between the holders.

Figure 1 presents a General view of the tunneling machine with rotor for soil destruction.

Figure 2 is a view As in figure 1.

Figure 3 - cross section B-B in figure 2.

The rotor of the tunnel shield is made in the form of a cylindrical casing 1 and is installed in the housing 2 tunneling shield. The rotation of the rotor is carried out by means of hydraulic motors 3. On the working surface of the rotor are radially holders 4, each made in the form of a shaft, freely available on qi is indices.com groove 5 of the rotor body, when this cutting elements 6 is rigidly fixed along the length of the tool holder. Between the holders 4 on the working surface of the rotor housing are slotted elements 7 made in the form of rectangular prisms.

The device operates as follows.

When moving the tunneling shield is the rotation of the rotor housing 1, thus there is the destruction of soil slotted elements 7 and the crushing of the soil cutting elements 6, is rigidly fixed to the holders 4. Due to the efforts of the resistance to cutting of the soil cutting elements 6 is rotated (deviation) together with the holders 4 in the cylindrical grooves 5. Characteristic is the fact that it happens at the same time regardless of the radius of the location of the cutting element and the possible heterogeneity of the face. This is achieved by the rigid mounting of all cutting elements 6 on the holders 4, made in the form of shafts freely placed in the cylindrical grooves 5.

Due to the synchronization of rotation (deviation) of all cutting elements, as well as Welt elements, increases the efficiency of the rotor and, accordingly, the performance of the tunneling shield.

The rotor tunneling shield is made in the form of a cylindrical body, on the working surface of which there are rotary cutting elements is s with carbide inserts and slitting elements in the form of rectangular prisms with carbide inserts, characterized in that it is provided with radially arranged on the working surface of the rotor cutter holders, each of which is made in the form of a shaft freely placed in the cylindrical groove of the rotor body, with the cutting elements fixed along the length of the tool holder, and Welt elements are located between the holders.



 

Same patents:

FIELD: mining industry.

SUBSTANCE: method includes expanding guiding pipeline by extracting soil from around it by driving shield with rotor working implement. Soil is extracted to value, surpassing needed outer diameter of shield cover. Forming ring-shaped space inside tunnel mine is compacted from back side and continuously filled with liquid. Concurrently sedimentation of extracted soil is drained from lower portion of face. Displacement of driving equipment relatively to guiding pipeline is performed along soft trajectory. Device has means for driving guiding pipeline and driving shield with rotor working implement. Rotor working implement is mounted on body of driving shield. Front surface of working implement with cutters extends beyond outer contour of shield cover, provided with back end compaction. Device is provided with fluid pump device. Force hose of pump is outputted from upward portion beyond outer contour of shield cover. Device for transporting extracted soil from face is made in form of suck-in hose connected to pump device and to lower portion of ring space beyond rotor working implement.

EFFECT: lower transverse loads on guiding pipeline.

2 cl, 1 dwg

The invention relates to the mining industry and construction, namely for the construction of tunnels of noncircular cross section by shield tunneling method

Tunnel shield // 2151296

Continuous miner // 2126888

The invention relates to underground construction and m b

FIELD: mining industry.

SUBSTANCE: method includes expanding guiding pipeline by extracting soil from around it by driving shield with rotor working implement. Soil is extracted to value, surpassing needed outer diameter of shield cover. Forming ring-shaped space inside tunnel mine is compacted from back side and continuously filled with liquid. Concurrently sedimentation of extracted soil is drained from lower portion of face. Displacement of driving equipment relatively to guiding pipeline is performed along soft trajectory. Device has means for driving guiding pipeline and driving shield with rotor working implement. Rotor working implement is mounted on body of driving shield. Front surface of working implement with cutters extends beyond outer contour of shield cover, provided with back end compaction. Device is provided with fluid pump device. Force hose of pump is outputted from upward portion beyond outer contour of shield cover. Device for transporting extracted soil from face is made in form of suck-in hose connected to pump device and to lower portion of ring space beyond rotor working implement.

EFFECT: lower transverse loads on guiding pipeline.

2 cl, 1 dwg

FIELD: mining industry.

SUBSTANCE: rotor is made in form of cylindrical body, on working surface of which cutter holders are radially placed, each of which is made in form of shaft, freely placed in cylindrical groove of rotor body. Along whole length of each cutter holder cutting elements are mounted with hard-alloy inserts. Between cutter holders cutting elements are placed, made in form of rectangular prisms with hard-alloy inserts.

EFFECT: higher efficiency.

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2 cl, 4 dwg

Tunnel shield rotor // 2279547

FIELD: underground building, particularly rotary tunnel shield adapted for all-purpose tunnel construction.

SUBSTANCE: rotor is made as cylindrical body with cutting members and slotting members connected to working body surface. The cutting members are provided with hard-alloy inserts. The slotting members are made as rectangular prisms with hard-alloy inserts. Cutting members are fixedly secured to holders made as rollers and freely located in cylindrical grooves of rotor body. Slotting members are also installed on holders and may rotate together with cutting members.

EFFECT: increased operational efficiency.

3 dwg

Full-face machine // 2324051

FIELD: mining; apparatus for making tunnels in underground mining of minerals.

SUBSTANCE: machine includes undercarriage representing a frame whereon caterpillar trucks are attached and trunnion axes of a working head gearbox together with a rotary working head, loading buckets, berm mills, cutting drums, gathering blades, conveyer and protection cowl mounted on supports of said frame. Hydraulic lift cylinders of the working head gearbox are attached to this frame, rods of said cylinders are attached to the working head housing and all rotating parts of said rods are set into bearings equipped with a force lubrication system. The lubrication system includes pump, pressure pipeline, manifolds and system of distribution tubes leading to gear shaft bearings of the gearbox. The undercarriage frame has two tightly closed cavities, wherein a pressure line between the pump and manifolds is positioned being made in the form of coils. Both cavities of the frame are filled with cooling fluid.

EFFECT: cooling of lubricating fluid within the lubrication system; increasing the life of gear shaft bearings of the machine gearbox; decreasing the ambient air temperature; enhancement of working conditions for the operating staff.

4 dwg

Full-face machine // 2324052

FIELD: mining; apparatus for making arched tunnels in underground mining of minerals.

SUBSTANCE: machine includes frame whereon an undercarriage and working element drive gearbox are mounted together with a rotary working head being attached to output shafts of said gearbox. The working head consists of borer, pitching borer, cross element, each end of its arms having a loading bucket with a bottom and sidewalls, and conveyer. The front face bottoms of two loading buckets positioned on opposite arms of said cross element are slopped forward with respect to the machine displacement vector, and those of the other buckets - slopped backward with respect to the same vector.

EFFECT: cleaning-up with the full engagement of the bucket cross-section area; reduction of impact loads for the cross element; reduction of heating and increased wear of the bearings in the working head drive gearbox of the machine.

7 dwg

FIELD: mining.

SUBSTANCE: invention refers to mining industry, namely to driving shields, and may be used during building of highway, railway and public tunnels. Operating member of driving shield includes centre rotor working organ in the form of faceplate, working organs with rock-breaking tools on outer surface for creation of oval form of tunnel section, actuating device of working organs and traveling mechanism. In order to create oval form of tunnel section, working organs are designed as two side and two vertical working organs of drum-type. Each side working organ is designed in the form of body of revolution arranged in relation to cross centroidal principal axis of tunnel section, with bow-shaped element corresponding to arch, half of side arches and perimetres of their connection. End surfaces of vertical working organs of drum-type correspond to arch and floor arch of tunnel. Central working organ is installed by means of bearing on axis located in centre of gravity of driving shield, this axis is also operating member guide. At that side working organs and vertical working organs are installed by means of bearings on their axes rigidly cantilever connected to guide. At that each of mentioned working organs is provided with actuating device, and traveling mechanism is designed in the form of hydraulic jacks.

EFFECT: providing of driving of tunnel of optimal oval shape transverse and establishing of conditions for maximum mechanisation and automation of all operating processes during tunnel building.

5 dwg

FIELD: mining.

SUBSTANCE: actuator of a tunnel shield with oval shape comprises a central rotor tool, two horizontal side tools and two vertical drum tools. The actuator is telescopically connected to a shield shell along centres of rotation of side and vertical tools, and also via a square opening in a tight partition along the centre of gravity with oval section and a square guide passing through it.

EFFECT: invention provides for correction of shield shell position and position of tunnel section as direction of tools rotation changes.

5 dwg

FIELD: mining.

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EFFECT: reducing time for tunnel driving.

31 cl, 4 dwg

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