RU2472937C1 - Device for making recesses in long fully-mechanised working faces - Google Patents

Abstract

FIELD: mining.

SUBSTANCE: device for making recesses in fully-mechanised working face involves an actuating element, drilling rod rotation and supply mechanisms, load-carrying frame, drilling cartridge, screw stems and fastening mechanism. The latter is made in the form of suspension mechanism consisting of hydraulic jacks, the cylinders of which are hinged on the covering of the support section, and their stocks are attached to the load-carrying frame, and a detachable support.

EFFECT: improving the operating efficiency.

1 dwg

Description

The invention relates to the mining industry and is intended for niches in long complex-mechanized treatment faces on medium-thickness formations with viscous coals.

A well-known cutting machine (Malt, Zaikov, Pervov. Mountain machines and automated complexes. - M .: Nedra, 1981, pages 303-304, figure IV. 53.), operating as part of a mechanized treatment complex, for carrying out niches in a complex mechanized treatment face. A device for carrying out niches intended for transferring the shearer to a new excavation strip consists of two auger actuators, a chain feed mechanism, a cutting drive gearbox, a support beam, which forms a triangular frame with a conveyor belt, and a control panel.

The disadvantages of this device are: the large dimensions of a niche-cutting machine, the impossibility of fully combining the work of carrying out a niche and the work of a shearer for excavating, the need to install roof supports to maintain the roof in a niche, the presence of a chain feed mechanism complicates the design and leads to an increase in dust generation and the risk of injury to maintenance personnel .

A well-known AVN unit for excavating niches (Topchiev, Vedernikov, Kolentsev, Astakhov, Semencha. Mining machines and complexes. - M .: Nedra, 1971, pages 355-357, figure 14.32.), Operating as part of a mechanized treatment complex. The unit consists of a dredging machine with a twin-screw executive body, a T-shaped conveyor, a mechanism for frontal supply of the unit to the face, a chain feeding mechanism along the face, and a control panel.

The disadvantages of the ABH unit are: the impossibility of fully combining the niche and the work of the shearer for digging, the T-shaped conveyor does not fit well in the dimensions of the sections of the lava lining, blocks the section of the lava and causes difficulties in moving people and transporting goods. The low rigidity of the stand in the plane of the formation leads to jamming of the scrapers, deformation of the limiting stops, exit of the scrapers from the sides of the conveyor, and, as a result, to significant dynamic loads. To maintain the roof in a niche, it is necessary to install an individual roof support, which requires a lot of labor for installation and moving.

A device for deserted coal mining (ed. St. SU No. 1416695, publ. 08/15/1988), adopted as a prototype. The device consists of an executive body (auger), feed mechanisms and rotation of the executive body, a loading device (ring bar loader), a movable pneumatic conduit, a base that acts as a fastening mechanism. The device operates as part of a mechanized treatment complex, includes a front extraction unit having telescopic actuators with drill injectors, an annular bar loader. In the lower part of the base of the lining, a movable pneumocarbon conduit is mounted pivotally connected to the supply hydraulic jacks with the possibility of moving the movable pneumocarbon conduit to the bottom by means of hydraulic supply jacks. The device is mounted on a base made in the form of a base plate. At the same time, the executive bodies are installed with the possibility of moving along the bottom along the movable pneumatic conduit by means of traction bodies of the units. The body of the executive body has through holes for moving traction bodies and a rigidly fixed loading share. In the chest of the face in the places of the highest concentration of cracks by means of the aggregate, the excavation niches are cut to a depth equal to 0.8-0.95 of the distance from the zone of maximum reference pressure and coal pillars are formed. Then the mouths of the niches are sealed, the working fluid is fed into them under pressure and the pillars of coal are destroyed. At the same time, the compressed air leaving the drill injector creates a pressure in the niche that is sufficient for the destruction of coal together with the reference and methane pressures. Then, coal is trimmed in the lava near the roof and the bed of the formation with a long working face with the subsequent collapse of coal, transporting it along the face to the haulage drift and managing the roof in the worked out space.

The disadvantages of this device are: the inability to operate a mechanized treatment complex equipped with this device with a shearing screw harvester, the inability to transfer the device from its working position to the transport one to free the area necessary for moving people during repair work, especially in emergency situations, complicated construction and technology work.

The technical result of the invention is to increase the efficiency of modern complex-mechanized treatment faces by reducing the number and duration of auxiliary operations, simplifying the technology of treatment works.

The technical result is achieved by the fact that in the device for carrying out niches in a complex mechanized face, including an actuator, rotation mechanisms and feed of the drill stand, a supporting frame, a drill chuck, a fastening mechanism, a fastening mechanism made in the form of a suspension mechanism, consisting of 5 hydraulic jacks the cylinders of which are pivotally mounted on the overlap of the lining section, and their rods are attached to the supporting frame, and a removable stop.

The cleaning mechanized complex with a screw harvester is equipped with a device for carrying out niches (Fig. 1), consisting of an actuator 1, an actuator feed mechanism for a face 2, a cutting drive 3, a suspension mechanism 4, a drill chuck 5, a bearing frame 6, screw rods 7 , detachable stop 8.

The mechanized roof section located at the end of the lava at the niche location is equipped with a device, which is fastened with 5 hydraulic jacks, the cylinders of which are pivotally fixed to the roof bolt section overlap, and the rods - to the bearing frame of the drilling machine 6. Suspension mechanism 4 serves for fixing machines in a stable working position when drilling a well (preventing the device from moving away from the bottom while drilling, ensuring the straightness of the well) and to transfer the device from the working position to the transport and from t ansportnogo to working position, so as not to impede the work of shearer. Suspension mechanism 4 consists of five telescopic hydraulic cylinders double sliding. The location of the hydraulic cylinders is as follows: in the transport position, the hydraulic cylinder (c) has a maximum length, and in the working position its length is minimal. A pair of hydraulic cylinders (a) and a pair (b) are attached to the carrier frame 6 of the device. In the working position, these hydraulic cylinders have a maximum length, and in the transport one a minimum. For a more accurate fixation of the device in the working position, a removable stop 8 is used, consisting of two metal plates, which are attached at one end to the carrier frame 6 of the device and the other abut against the bracket of the lining section.

When moving a combine with a coal excavation from the end zone into the lava, the engines of the support sections and the face conveyor to the face of the device are transferred to the working position. A castellated actuator 1 is mounted, which is fed to the bottom by a feed mechanism 2, consisting of two hydraulic cylinders, and produces drilling by a predetermined amount. When the hydraulic cylinders reach the maximum extension, the actuator is disconnected from the drill chuck 5, the reverse stroke of the hydraulic jacks is turned on, a screw rod 7 is installed, which lengthens the drill string and transports coal from the well. After holding the well in reverse, it is cleaned up, after which the executive body 1 and the drill string are dismantled, and the device is transferred to the transport position (indicated by dashed lines).

When using this device, a method is provided for carrying out niches that do not require fastening, it is possible to position the machine by reservoir power, the machine is transferred from the working position to the transport without cluttering the workspace, niche work is completely combined with excavation work, the size of the niche and the cost of its holding. A front notch of the shearer is provided by the method of transferring the shearer to a new excavation strip in long complex mechanized working faces (patent RU No. 2417316, published on April 27, 2011), thereby increasing the efficiency of modern complex mechanized working faces due to reducing the number and duration of auxiliary operations by simplifying the technology of sewage treatment.

Claims (1)

A device for carrying out niches in a complex mechanized working face, including an actuator, rotation mechanisms and feed of the drill stand, a supporting frame, a drill chuck, screw rods, a fastening mechanism, characterized in that the fastening mechanism is made in the form of a suspension mechanism consisting of hydraulic jacks, the cylinders of which are pivotally mounted on the overlap of the lining section, and their rods are attached to the supporting frame, and a removable stop.

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