Mining tunnelling combine

FIELD: mining.

SUBSTANCE: mining tunnelling combine comprises a frame equipped with a travelling mechanism, a boom that carries cutting facilities and a traction facility that passes in the longitudinal direction of the combine behind the back end of the frame. Cutting facilities are formed by at least two rotary cutting heads having axes of rotation passing in direction of tunnelling or arranged at the sharp angle to the tunnelling direction. The mining tunnelling combine also comprises a block suitable for towing behind the frame, having a transverse passage for the traction facility and hingedly connected to the frame by means of blocks of hydraulic piston cylinders. The block comprises at least one boring and setting device for anchors and at least one support device fixed on the roof and foot, each at both sides of the traction facility. On the block there is also a control device connected to the drive of the travelling mechanism and/or drives of cutting facilities and with hydraulic control of blocks of hydraulic piston cylinders, so that blocks switch to free-flow or floating position during combine tunnelling.

EFFECT: invention provides for installation of anchors most closely to the face with simultaneous continuation of boring process.

10 cl, 3 dwg

 

The invention relates to mining and drilling harvester comprising a frame equipped with a mechanism of movement, a shaft carrying the cutting means and the traction means, passing in the longitudinal direction behind the rear end of the frame of the harvester, and the cutting means is formed by at least two rotating cutting heads having an axis of rotation passing in the direction of penetration or located at an acute angle to the direction of penetration.

Mining and tunneling machines with cutting heads, the axis of rotation of which are in the direction of penetration or are at an acute angle to the direction of penetration, usually called "Boers Marietta", in which the cutting part contains two or more rotating cutting heads. Two cutting heads describe the profile cutting with a maximum width of the profile, and cutting tools are typically placed on the cutting head so that the cutting means one of the heads are in engagement with the cutting means another head during rotation, so that the circular areas corresponding profiles of cut will overlap each other. The overall profile of cutting two or more cutting heads that are positioned next to and, preferably, at one level, therefore, as a rule, corresponds to the appropriate number of partially overlapping each other on the UGA circular plots with a so-called wedge profile, remaining between the individual circular areas on the soles and the roof.

To consolidate the tunnel is known to use devices for drilling under the anchors and installation of anchors that are installed on the harvester or placed in separate devices on the way, so they can be promoted separately from the digging machine. For fixing the roof while drilling wells under the anchors and installation of anchors known support device that can establish a connection between the top and base to support the corresponding area of the roof.

From German patent 3108877 A1 is known a continuous miner, which is the portal for installation of anchors placed over the frame of the digging machine and supporting structure, which can pull ropes or chains, and which includes in General the drilling and installation device for anchors used to install additional anchors is advanced away from the digging machine.

From U.S. patent 3939958 known a so-called hopper car in which the rear drilling and installation device for anchors placed in the Central area of the conveyor and is connected to the frame of the harvester using the compounds. Two drilling and installation device for anchors secure the covering device is the your side of the arch.

In German patent 2851443 A1 discloses the placement of a support system set integrated blocks drilling and installation of anchors behind the cutting and traction devices. The translational movement of the digging unit mounted on the bottom plate of the traction device, is carried out by hydraulic cylinders connected with enhanced support system arch. Moving the system to support the arch or the cutting mechanism in this case is possible only with the help of an exceptional mechanism formed by the cylinders.

From U.S. patent 4865390 known continuous miner, in which the parties caterpillar parts placed two mutually connected load-bearing frame with integrated drilling and setting devices for anchors that remain fixed between the roof and floor during the cutting process so that to enter the anchors in parallel with the drilling process.

Placement of drilling and installation of devices for anchors is an issue, particularly with tunnel harvesters originally described species belonging to the type "Bur Marietta". Tunneling machines of this type have a cutting tool equipped with multiple rotors and additional drills for drilling profiles a wide area. Taking into account the width of their design this type of design is only suitable for line of the second shaft in which the cutting means can, each, to some extent involved, to prevent movement of the harvester along the way. The placement of the drilling and installation of devices to anchor the side of crawler parts in most cases impossible because of the limited distance to the side wall. It is difficult to embed the drilling and installation device for anchor directly into the continuous miner to support parallel operations, drilling and anchoring.

Therefore, the present invention is directed to further improvement of the digging machine of the initially described type, providing the location of the anchors closest to the bottom while maintaining the drilling process.

To achieve this goal, continuous miner initially described type essentially differs in that it contains a unit that is towed behind the frame of the harvester, has a transverse passage for the traction device and pivotally connected to the frame of the harvester using blocks hydraulic piston cylinders, each of which contains at least one of drilling and installation device for anchors and at least one supporting device mounted on the top and bottom, each with both sides of the traction device. The placement of the drilling and installation of devices for anchors on uxorem block along with the supporting device allows the installation of the anchors on the area immediately behind the digging machine, where, due to the fact that the hinged connection of the towed unit with a frame of the harvester is provided with blocks hydraulic piston cylinders, the distance between the towing unit and the tunneling machine can vary, so that the excavation can continue during the installation of the anchors with the drilling and installation of devices for anchors. Because the towed unit has a transverse passage for the traction device, traction device, passing behind the rear end of the frame of the harvester does not require any transformation. The traction device is thus through a towed unit which is to protect personnel from debris falling from the traction device, preferably contains protective screens on both sides of the traction device.

As mentioned above, the connection of a towed unit with tunnel harvester is blocks hydraulic piston cylinders, with the most preferred arrangement of the hydraulic piston cylinders is achieved if the towed unit is hinged to the frame of the combine the two sets of hydraulic piston cylinders symmetrically relative to the longitudinal Central plane, and the frame and towed unit is connected between an additional unit of a hydraulic piston-cylinder, proudamerican in the direction of the longitudinal Central plane.

Two blocks hydraulic piston cylinders symmetrically relative to the longitudinal Central plane are preferably articulated to the side frame digging machine and serve to transport the towed unit. In addition, there is a correspondingly inclined an additional unit of a hydraulic piston-cylinder, which is made as a control cylinder, allowing you to position the towed unit and, accordingly, the drilling and installation device for anchors in accordance with the scheme of anchoring. Lateral displacement of the towed unit within certain limits achievable by means of the control cylinder.

To enable parallel operations of drilling and anchoring continuous miner according to the invention includes a control device that is connected to drive the traction part and/or actuators cutting tools and hydraulic blocks hydraulic piston cylinder, so that these blocks are switched on gravity or floating position during penetration of the harvester. Parallel execution of operations of drilling and anchoring in this case is performed so that the towed unit is mounted in the path of the reference device, which can be fixed between the top and base, and Anke is s set during the advance of the digging machine with running gear in particular crawler mechanism. When this blocks the hydraulic piston cylinder, whereby the towed unit is connected with the tunneling machine, switch on gravity or floating position to provide compensation length between the tunneling machine and the towed unit fixed on the path, possibly without resistance, as a function of forward digging machine.

To ensure timely termination of the promotion of the digging machine, as soon as the blocks hydraulic piston cylinder has reached its maximum stroke, preferably an additional improvement, which blocks the hydraulic piston cylinders contain a means of measuring the shift designed to determine the appropriate course, and signals measurement tools shift served on the control device so that the action of the traction drive mechanism and/or drives the cutting means is interrupted as soon as a measure of the shift determines the maximum stroke is reached.

After stopping the digging machine support device towed unit that can be mounted on the roof and on the outsole can be drawn to allow the promotion of a towed unit with blocks hydraulic cylinder and piston is positionierung according optionally under the control cylinder.

To prevent collision between the towing unit and the traction part extending backward from the rear end of the frame digging machine, usually with the end part, which can be rotated around the vertical axis, when the continuous miner advances with a towed unit fixed on the road, the traction portion includes an end portion that can rotate around a vertical axis and placed behind a towed unit at a distance, increased by the amount of the maximum stroke units hydraulic piston cylinders. Due to the fact that the rotary end portion of the traction part behind the towed unit on a correspondingly larger distance can be prevented from collision during sinking.

According to a preferred variant, it is proposed that a towed unit was located on the bottom runners. These runners will facilitate the process of towing. However, if continuous miner should be moved to a greater distance, the skids can cause problems, so, according to the next result, it is assumed that the traction portion is able to ascend and descend, and a towed unit that is mounted on the frame of the traction part. This configuration allows full rise of the towed unit, allowing you to provide freely what a moving runners on sex, as required for the move operation.

Due to the fact that drilling and installation device for anchors placed in a towed unit separate from the digging machine, drilling and mounting devices for anchors will be provided sufficient space for operating personnel, and a towed unit contains the booth operator or the control platform, respectively.

To improve the maneuverability of the digging machine and the towed unit width of the towed unit does not exceed the width of the digging machine.

Hereinafter the invention will be explained in more detail in example embodiments schematically illustrated in the drawings.

Figure 1 shows a side view of the digging machine according to the invention, including a towed unit for drilling and installation of the anchors.

Figure 2 shows a top view of the digging machine according to figure 1.

Figure 3 shows a view of the digging machine back in the direction of arrow III in figure 1.

Figure 1 shows the continuous miner 1 containing mechanism 2 movement. The movement mechanism 2 in this case has the form of a crawler mechanism. The drilling boom 3, which can be adjusted in the vertical direction according to the double arrow 4 with the respective regulating devices installed cutting among the STW 5, which are rotated around the axis 6 of rotation.

Behind the cutting means 5 is located the cutting roller 8, which is placed on the roof 7 and the cutting drum 10, which is placed on the sole 9. Cutting rollers 8 and 10 is connected with the pivoting arm 11 or 12, respectively, rotatable about the drilling boom 3 around the axis 13 or 14, respectively. The hydraulic cylinders 15 and 16 are rotary actuators. Each of the cutting rollers 8 and 10 are connected respectively with one actuator 17 or 18.

Figure 1 shows also the traction portion 19 passing longitudinally relative to the harvester direction then the rear end of the combine and containing a rotatable end part 20.

Behind the digging machine posted towed unit 21, which moves on the rails 22. Towed unit 21 includes drilling and setting device 23 to anchor and support device 24, which can be fixed between the roof 7 and the sole 9. In addition, it provides the platform 25 for the operator 26. On both sides of the traction part 19 posted by protective screens 27 and a roof 28.

Towed part 21 is connected to the frame of the digging machine 1 using blocks 29 hydraulic piston cylinders.

Figure 2 in the top view clearly shows the placement of two such blocks 29 hydraulic piston cylinders, i.e. one from left and one from the right side of the digging machine 1. Also used another block 30 of the hydraulic piston-cylinder passing through the tangent to the longitudinal Central plane 31. The block 30 of the hydraulic piston-cylinder designed as a control cylinder and is used to improve the positioning of towed unit 21. From the illustration according to figure 2 it is obvious that the drilling and installation of the device anchors are placed on both sides of the traction means 19. The same is proposed in respect of the supporting devices 24, each of which is formed by a block of a hydraulic piston-cylinder. It is also obvious that the traction means 19 includes an end portion 20 which can be rotated around a vertical axis 32, and the position after the turn is indicated by a dashed line and marked the position 20'. In addition, protective screens 27 is placed below the roof 28 and are indicated by the dotted line, and it is clear that protective screens 27 are placed on both sides of the traction means 19 through a towed unit 21.

Figure 3 illustrates a transverse passage 33 for traction means 19, and the end part 20 of the traction means 19 as illustrated in position without rotation, and the position after turning 20'. Two drilling and setting device 23 for anchors placed on both sides of the traction means 19. The platform 25 operator has space for two op is the operators 26, provided on the stand 34 operator.

1. Mountain road header containing a frame equipped with a mechanism of movement, a shaft carrying the cutting means and the traction means, passing in the longitudinal direction of the combine behind the rear end of the frame, and the cutting means is formed by at least two rotating cutting heads having an axis of rotation passing in the direction of penetration or located at an acute angle to the direction of penetration, characterized in that it contains the block (21), suitable for towing behind a frame having a transverse passage (33) for the traction means (19), and pivotally connected with the frame by means of blocks (29, 30) of the hydraulic piston cylinders, each of which contains at least one of drilling and installation device for anchors (23) and at least one support device (24)mounted on the roof (7) and the base (9), each on both sides of the traction means (19), and the control device is connected with a drive mechanism (2) movement and/or drives the cutting means (5, 8, 10) and with the device of hydraulic control blocks (29, 30) of the hydraulic piston cylinder, so that the blocks (29, 30) switch to gravity or floating position during penetration of the harvester (1).

2. Mountain road header according to claim 1, characterized in that a towed unit (21) W is Mirna connected to the frame by two blocks (29) hydraulic piston cylinder, symmetrically relative to the longitudinal Central plane, and the frame and towed unit (21) connected between an additional unit (30) of the hydraulic piston-cylinder, passing obliquely toward the longitudinal Central plane.

3. Mountain road header according to claim 1 or 2, characterized in that the blocks (29, 30) of the hydraulic piston cylinders contain a means of measuring the shift designed to determine the appropriate course, and the signal measurement of the shift served on the control device so that the action of the drive mechanism (2) movement and/or drives the cutting means (5, 8, 10) is interrupted immediately after the determination by means of measuring the shift of the maximum of turn.

4. Mountain road header according to claim 1 or 2, characterized in that a towed unit (21) is located on the sole (9) on the rails (22).

5. Mountain road header according to claim 1 or 2, characterized in that the traction means (19) contains the end part (20)that can rotate around the vertical axis (32) and placed behind a towed unit (21) at a distance, increased by the maximum stroke units hydraulic piston cylinders (29, 30).

6. Mountain road header according to claim 1 or 2, characterized in that a towed unit (21) includes protective screens (27) on both sides of the traction environments is tion (19).

7. Mountain road header according to claim 1 or 2, characterized in that a towed unit (21) includes stand (34) the operator or platform (25) of the control.

8. Mountain road header according to claim 1 or 2, characterized in that the traction means (19) is able to ascend and descend, and a towed unit (21) is located on the frame of the traction means (19).

9. Mountain road header according to claim 1 or 2, characterized in that the width of the towed unit (21) does not exceed the width of the digging machine (1).

10. Mountain road header according to claim 1 or 2, characterized in that the mechanism (2) movement is tracked by the mechanism.



 

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FIELD: mining.

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FIELD: mining.

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2 cl, 4 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

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