CN113309568B - Power supply system and method suitable for strip mine full-continuous coal mining equipment - Google Patents
Power supply system and method suitable for strip mine full-continuous coal mining equipment Download PDFInfo
- Publication number
- CN113309568B CN113309568B CN202110652480.XA CN202110652480A CN113309568B CN 113309568 B CN113309568 B CN 113309568B CN 202110652480 A CN202110652480 A CN 202110652480A CN 113309568 B CN113309568 B CN 113309568B
- Authority
- CN
- China
- Prior art keywords
- power supply
- cable
- bridge type
- coal mining
- conveyor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003245 coal Substances 0.000 title claims abstract description 146
- 238000005065 mining Methods 0.000 title claims abstract description 109
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 215
- 239000002390 adhesive tape Substances 0.000 claims abstract description 34
- 230000009471 action Effects 0.000 claims description 8
- 230000009466 transformation Effects 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/04—Distributing means for power supply in mines
- E21F17/06—Distributing electric power; Cable networks; Conduits for cables
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C47/00—Machines for obtaining or the removal of materials in open-pit mines
- E21C47/02—Machines for obtaining or the removal of materials in open-pit mines for coal, brown coal, or the like
- E21C47/04—Conveyor bridges used in co-operation with the winning apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Power Engineering (AREA)
- Branching, Merging, And Special Transfer Between Conveyors (AREA)
Abstract
The application discloses a power supply system and a method suitable for strip mine full-continuous coal mining equipment, wherein a first power supply line of the power supply system is sequentially distributed to two ends of a first bridge type reversed loader through a main belt conveyor, a sliding blanking mechanism connected with the first bridge type reversed loader and a rear branching line of the first bridge type reversed loader so as to supply power for an upper coal cutter or a lower coal cutter; the second power supply circuit is sequentially distributed to the two ends of the second bridge type transfer conveyor through the main adhesive tape conveying machine, the sliding blanking mechanism connected with the second bridge type transfer conveyor and the rear branching of the second bridge type transfer conveyor so as to supply power for the upper coal mining machine or the lower coal mining machine. The cable layout mode can realize that the two bridge type reversed loaders move in the parallel or vertical direction of the main conveyor belt machine, and can switch the first power supply line or the second power supply line to supply power for the upper coal cutter or the lower coal cutter respectively through the cable replacement mechanisms on the two bridge type reversed loaders, so that the high-efficiency and quick cable switching and continuous coal mining are realized, the efficiency is high, and the failure rate is low.
Description
Technical Field
The application belongs to the technical field of coal mine power supply, and relates to a power supply system and method suitable for strip mine full continuous miner.
Background
The arrangement of the power supply lines is a problem that all projects have to be carefully considered, and with the development of the technology of the strip mine equipment, the movement track of the equipment is gradually complicated due to the increase of equipment configuration, so that the arrangement requirement of the equipment on the power supply lines is higher and higher. Because of the birth of a brand new coal mining process, the mining of equipment according to the requirements of the new coal mining process is performed synchronously by dividing an upper working face and a lower working face, and the problems of track cross operation and real-time change of the position size of the working faces exist in the transfer mechanism of the upper and lower mining areas, the common power supply circuit arrangement mode cannot meet the requirement of simultaneous power supply of the upper and lower working face equipment.
Disclosure of Invention
Aiming at the defects and shortcomings in the prior art, the application provides a power supply system and a method suitable for strip mine full-continuous coal mining equipment, and solves the problems existing in the existing mining technology.
In order to achieve the above purpose, the application adopts the following technical scheme:
the power supply system is characterized in that the coal mining equipment comprises an upper coal mining machine positioned on an upper coal mining working face, a lower coal mining machine positioned on a lower coal mining working face, a transfer hoist connected with the lower coal mining machine, a main conveyor belt machine arranged between the upper coal mining machine and the lower coal mining machine and positioned on the same plane with the upper coal mining machine, wherein the main conveyor belt machine is parallel to the travelling directions of the upper coal mining machine and the lower coal mining machine, and a first bridge transfer machine and a second bridge transfer machine which are arranged on the main conveyor belt machine and are parallel to each other and are perpendicular to the main conveyor belt machine; the first bridge type transfer conveyor and the second bridge type transfer conveyor are connected with the main conveyor belt machine through the sliding blanking mechanism so that the first bridge type transfer conveyor and the second bridge type transfer conveyor can move along the main conveyor belt machine vertically or in parallel, and cable replacing mechanisms are respectively arranged at the upper end and the lower end of the first bridge type transfer conveyor and the second bridge type transfer conveyor;
the power supply system comprises five power supply lines:
the first power supply line is sequentially distributed to the two ends of the first bridge type reversed loader through the main adhesive tape conveying machine, the sliding blanking mechanism connected with the first bridge type reversed loader and the rear branching of the first bridge type reversed loader so as to supply power to the upper coal cutter or the lower coal cutter;
the second power supply line is sequentially distributed to two ends of the second bridge type reversed loader through a sliding blanking mechanism connected with the main belt conveyor, the second bridge type reversed loader and the rear branching of the second bridge type reversed loader so as to supply power to the upper coal cutter or the lower coal cutter;
the third power supply line is used for supplying power to the main adhesive tape conveying machine; the fourth power supply line and the fifth power supply line are standby circuits;
the first power supply circuit supplies power to the upper coal mining machine, the second power supply circuit supplies power to the lower coal mining machine when the first power supply circuit supplies power to the upper coal mining machine, and the second power supply circuit supplies power to the upper coal mining machine when the first power supply circuit supplies power to the lower coal mining machine after the power supply circuit is switched into the first power supply circuit by the cable replacing mechanism.
The application also comprises the following technical characteristics:
specifically, the left side and the right side of the main adhesive tape conveying machine are provided with main adhesive tape conveying machine cable grooves which are parallel to each other, and each main adhesive tape conveying machine cable groove comprises a fixed area cable groove and a dragging area cable groove;
the bridge type reversed loader comprises a first bridge type reversed loader and a second bridge type reversed loader, wherein bridge type reversed loader cable grooves are formed in one sides of the first bridge type reversed loader and the second bridge type reversed loader respectively, each bridge type reversed loader cable groove of the first bridge type reversed loader comprises a fixed area cable groove I and a dragging area cable groove I, and each bridge type reversed loader cable groove of the second bridge type reversed loader comprises a fixed area cable groove II and a dragging area cable groove II.
Specifically, the first power supply line is arranged along a right fixed area cable groove of the main adhesive tape conveying machine, extends to the middle part of the main adhesive tape conveying machine, is led out to a right dragging area cable groove at the upper part of the right fixed area cable groove, bends in the right dragging area cable groove, extends out and is connected to a cable dragging part on the sliding blanking mechanism, is led out to a dragging area cable groove I of the first bridge conveyor by the cable dragging part, bends, and is led into a fixed area cable groove I at the lower part of the dragging area cable groove I from the middle part of the first bridge conveyor, and is respectively arranged at two ends of the first bridge conveyor in the fixed area cable groove I through a three-way junction box;
the second power supply circuit is arranged along a left fixed area cable groove of the main adhesive tape conveying machine, extends to the middle of the main adhesive tape conveying machine, is led out to a left dragging area cable groove at the upper part of the left fixed area cable groove, is bent in the left dragging area cable groove, extends out and is connected to a cable dragging part on the sliding blanking mechanism, is led out to a dragging area cable groove II of the second bridge type reversed loader by the cable dragging part, is bent, and is led into a fixed area cable groove II at the lower part of the dragging area cable groove II by the middle of the second bridge type reversed loader, and is respectively arranged to two ends of the second bridge type reversed loader in the fixed area cable groove II through a three-way junction box.
Specifically, the length of the first power supply line bent in the cable trough of the right dragging area is half of the length of the main conveyor belt machine plus 20 meters, and the length of the first power supply line bent in the cable trough I of the dragging area is half of the length of the first bridge conveyor plus 5 meters;
the length of the second power supply line bent in the left dragging area cable slot is half of the length of the main conveyor belt machine plus 20 meters, and the length of the second power supply line bent in the dragging area cable slot II is half of the length of the second bridge conveyor plus 5 meters.
Specifically, the cable replacement mechanisms arranged at the upper ends of the first bridge type reversed loader and the second bridge type reversed loader are upper cable replacement mechanisms, and the cable replacement mechanisms arranged at the lower ends of the first bridge type reversed loader and the second bridge type reversed loader are lower cable replacement mechanisms;
the upper ends of the first bridge type reversed loader and the second bridge type reversed loader are respectively provided with an upper hopper, and the two upper hoppers are provided with the upper cable replacing mechanism; the lower ends of the first bridge type reversed loader and the second bridge type reversed loader are respectively provided with a lower hopper, and the two lower hoppers are provided with the lower cable replacing mechanism;
the first power supply circuits arranged at two ends of the first bridge type reversed loader are respectively connected to the movable combination switch and the lower cable replacement mechanism; the movable combined switch connected with the first power supply line can divide the first power supply line into five lines: the first cable is used for supplying power to the sliding blanking mechanism, the second cable is used for supplying power to the upward moving mechanism of the first bridge type reversed loader to drive the crawler belt, the third cable is used for supplying power to the downward moving mechanism of the first bridge type reversed loader to drive the crawler belt, the fourth cable is used for supplying power to the first bridge type reversed loader conveying mechanism, and the fifth cable is connected with the upper cable replacement mechanism to supply power to the upper coal mining machine; the first power supply line can supply power to the lower coal mining machine through the lower cable replacement mechanism;
the second power supply circuits arranged at two ends of the second bridge type reversed loader are respectively connected to the movable combination switch and the lower cable replacement mechanism; the movable combined switch connected with the second power supply line can divide the second power supply line into five lines: the first cable is used for supplying power to the sliding blanking mechanism, the second cable is used for supplying power to the upward moving mechanism of the second bridge type reversed loader to drive the crawler belt, the third cable is used for supplying power to the downward moving mechanism of the second bridge type reversed loader to drive the crawler belt, the fourth cable is used for supplying power to the second bridge type reversed loader conveying mechanism, and the fifth cable is connected with the upper cable replacement mechanism to supply power to the upper coal mining machine; the second power supply line can supply power to the lower coal mining machine through the lower cable replacing mechanism.
Specifically, the upper cable replacing mechanism comprises a left power supply mechanism I arranged on the first bridge type reversed loader, a right power supply mechanism I arranged on the second bridge type reversed loader, and an auxiliary connecting piece I arranged on the left power supply mechanism I or the right power supply mechanism I so as to ensure that the left power supply mechanism I and the right power supply mechanism I are aligned and a cable plug replacing rod I arranged on the auxiliary connecting piece I; the cable plug of the upper coal mining machine can be switched between a left power supply mechanism I and a right power supply mechanism I to realize switching of a first power supply line or a second power supply line to supply power to the upper coal mining machine;
the lower cable replacing mechanism comprises a left power supply mechanism II arranged on the first bridge type reversed loader, a right power supply mechanism II arranged on the second bridge type reversed loader, and an auxiliary connecting piece II arranged on the left power supply mechanism II or the right power supply mechanism II so as to ensure that the left power supply mechanism II and the right power supply mechanism II are aligned and a cable plug replacing rod II arranged on the auxiliary connecting piece II; the cable plug of the lower coal mining machine can be switched between the left power supply mechanism II and the right power supply mechanism II to realize the switching of the first power supply line or the second power supply line to supply power to the lower coal mining machine.
Specifically, the sliding blanking mechanism includes: the coal plough, the horizontal pulley of establishing in the coal plough below is in order to cooperate with the slide rail on the main belt conveyor and is realized that first bridge type transfer conveyor and second bridge type transfer conveyor homoenergetic be along main belt conveyor parallel direction removal, establish the longitudinal pulley at coal plough middle part and be in order to cooperate with the slide rail on first bridge type transfer conveyor or the second bridge type transfer conveyor and realize that first bridge type transfer conveyor and second bridge type transfer conveyor homoenergetic be along main belt conveyor vertical direction removal and link to drag the part with dragging the cable on the coal plough and drag first power supply line or second power supply line.
Specifically, the five-way power supply line is a five-way 10kV high-voltage power supply line which is formed by distributing two ways of 35kV high-voltage power by a power distribution station and then enabling the two ways of 35kV high-voltage power to enter a temporary power transformation and distribution cabinet outside a stope and then converting the 35kV high-voltage power into the five ways of 35kV high-voltage power supply line by the temporary power transformation and distribution cabinet.
The method is realized by the power supply system applicable to the strip mine full continuous miner; when the coal mining equipment works, the upper hopper of the first bridge type transfer conveyor is connected with the upper coal mining machine, and the first power supply line supplies power to the upper coal mining machine through the upper cable replacement mechanism; the lower hopper of the second bridge type reversed loader is connected with the lower coal cutter, and the second power supply line supplies power to the lower coal cutter through the lower cable replacement mechanism;
when the main belt conveyor needs to translate up and down, the first bridge type transfer conveyor and the second bridge type transfer conveyor can both drag the bent first power supply line and the bent second power supply line to move under the action of the sliding blanking mechanism, so that the first bridge type transfer conveyor and the second bridge type transfer conveyor can move in the vertical direction relative to the main belt conveyor;
when the first bridge type transfer conveyor and the second bridge type transfer conveyor need to move in parallel relative to the main adhesive tape conveying machine, the first power supply line and the second power supply line which are bent can be simultaneously dragged to move under the action of the sliding blanking mechanism.
The power supply line switching method suitable for the strip mine full-continuous miner is realized through the power supply system suitable for the strip mine full-continuous miner; before the power supply line is switched, the upper hopper of the first bridge type reversed loader is connected with the upper coal mining machine, and the first power supply line supplies power to the upper coal mining machine through an upper cable replacement mechanism; the lower hopper of the second bridge type reversed loader is connected with the lower coal cutter, and the second power supply line supplies power to the lower coal cutter through the lower cable replacement mechanism; the power supply line switching includes the steps of:
step 1, confirming a power supply line switching position, and enabling a first bridge type reversed loader and a second bridge type reversed loader to move towards the power supply line switching position;
step 2, aligning and combining the first bridge type transfer conveyor and the second bridge type transfer conveyor to enable an auxiliary connecting piece I of an upper cable replacement mechanism to be connected with a left power supply mechanism I and a right power supply mechanism I at the same time and an auxiliary connecting piece II of a lower cable replacement mechanism to be connected with the left power supply mechanism II and the right power supply mechanism II at the same time, wherein a system is powered off, a UPS intervenes in a control system, and the upper cable replacement mechanism and the lower cable replacement mechanism are electrified;
step 3: the cable plug of the upper coal mining machine is pulled out of the upper cable replacing mechanism of the first bridge type reversed loader, the reversing rod of the cable plug is reversed, the cable plug of the lower coal mining machine is pulled out of the lower cable replacing mechanism of the second bridge type reversed loader, and the reversing rod of the cable plug is reversed;
step 4: the cable plug of the upper coal mining machine is inserted into the upper cable replacing mechanism of the second bridge type reversed loader, and the cable plug of the lower coal mining machine is inserted into the lower cable replacing mechanism of the first bridge type reversed loader; after confirming that the cable plug is well inserted and the line insulation is detected, the system is electrified, the upper cable replacement mechanism and the lower cable replacement mechanism are powered off, and the UPS is withdrawn;
step 5, switching to a second power supply line to supply power to the upper coal mining machine through the upper cable replacement mechanism, and switching to a first power supply line to supply power to the lower coal mining machine through the lower cable replacement mechanism; the first bridge type transfer conveyor and the second bridge type transfer conveyor are separated and continuously enter a normal working state.
Compared with the prior art, the application has the beneficial technical effects that:
1. the application can realize the mobile power supply of long-distance (more than 2000 meters) cables which are parallel and vertical to the main adhesive tape conveying machine; the cable is not limited by the diameter of the cable under the condition of meeting the requirement of the cable dragging capability.
2. The application can realize high-efficiency and rapid cable switching in the coal mining process and continuous coal mining.
3. The cable is mainly laid in a straight line, so that bending points are few, and the service life of the cable is prolonged.
4. The cable has high effective utilization rate and less cables.
5. The application has simple mechanical structure and low failure rate.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present application.
Fig. 2 is a schematic diagram of the overall structure of the present application.
Fig. 3 is a schematic diagram of the power supply circuit layout of the present application.
Fig. 4 is a schematic structural view of the cable replacement mechanism of the present application.
Fig. 5 is a schematic diagram of the power supply line switching of the present application.
Fig. 6 is a schematic diagram of merging of left and right bridge type reversed loaders in the strip mine mining system of the present application.
Fig. 7 is a schematic diagram of a power supply line switching method according to the present application.
Reference numerals meaning:
1. the mining system comprises an upper coal mining machine, a lower coal mining machine, a transfer hoist, a main conveyor, a fixed area cable trough, a pulling area cable trough, a first bridge type transfer machine, a fixed area cable trough, a first bridge type transfer machine, a second bridge type transfer machine, a sliding blanking mechanism, a cable dragging component, a coal plough, a cable replacing mechanism, a left power supply mechanism, a right power supply mechanism, a auxiliary connecting piece, a cable replacing rod, a cable plug replacing rod, a first power supply line, a second power supply line, a movable combination switch and a cable plug.
The application is described in detail below with reference to the drawings and the detailed description.
Detailed Description
The following specific embodiments of the present application are given according to the above technical solutions, and it should be noted that the present application is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solutions of the present application fall within the protection scope of the present application. The present application will be described in further detail with reference to examples.
Example 1:
the embodiment provides a power supply system suitable for strip mine full continuous miner equipment, wherein the miner equipment comprises an upper miner 1 positioned on an upper coal face, a lower miner 2 positioned on a lower coal face, a transfer hoist 3 connected with the lower miner 2, and a main conveyor belt 4 arranged between the upper miner 1 and the lower miner 2 and positioned on the same plane as the upper miner 1, wherein the main conveyor belt 4 is parallel to the travelling directions of the upper miner 1 and the lower miner 2, and a first bridge transfer conveyor 5 and a second bridge transfer conveyor 6 which are arranged on the main conveyor belt 4 and are parallel to each other and are perpendicular to the main conveyor belt 4; the first bridge type transfer conveyor 5 and the second bridge type transfer conveyor 6 are connected with the main conveyor belt 4 through the sliding blanking mechanism 7 so that the first bridge type transfer conveyor 5 and the second bridge type transfer conveyor 6 can move along the main conveyor belt 4 in the vertical or parallel direction, and the cable replacing mechanisms 8 are respectively arranged at the upper end and the lower end of the first bridge type transfer conveyor 5 and the second bridge type transfer conveyor 6.
The power supply system comprises five power supply lines:
the first power supply line 9 is distributed to two ends of the first bridge type reversed loader 5 in a branching way after passing through the main belt conveyor 4, the sliding blanking mechanism 7 connected with the first bridge type reversed loader 5 and the first bridge type reversed loader 5 in sequence so as to supply power to the upper coal cutter 1 or the lower coal cutter 2;
the second power supply line 10 is distributed to two ends of the second bridge type reversed loader 6 in a branching way after passing through the main belt conveyor 4, the sliding blanking mechanism 7 connected with the second bridge type reversed loader 6 and the second bridge type reversed loader 6 in sequence so as to supply power to the upper coal cutter 1 or the lower coal cutter 2;
the third power supply line is used for supplying power to the main adhesive tape conveying machine 4; the fourth power supply line and the fifth power supply line are standby circuits.
The first power supply line 9 supplies power to the upper shearer 1 while the second power supply line 10 supplies power to the lower shearer 2, and the cable exchange mechanism 8 can switch the power supply line to the first power supply line 9 to supply power to the lower shearer 2 while the second power supply line 10 supplies power to the upper shearer 1.
The left side and the right side of the main adhesive tape conveying machine 4 are provided with main adhesive tape conveying machine cable grooves which are parallel to each other, and each main adhesive tape conveying machine cable groove comprises a fixed area cable groove 4-1 and a dragging area cable groove 4-2.
Through the technical scheme, when the main adhesive tape conveyor needs to translate up and down, the first bridge type transfer conveyor and the second bridge type transfer conveyor can both drag the bent first power supply circuit and the bent second power supply circuit to move under the action of the sliding blanking mechanism, so that the first bridge type transfer conveyor and the second bridge type transfer conveyor can move in the vertical direction relative to the main adhesive tape conveyor. As shown in fig. 1, in fig. 1 (a), in the wider case, the first bridge conveyor and the second bridge conveyor are arranged at positions on the main conveyor; in fig. 1 (b), when the working surface is narrow, the first bridge conveyor and the second bridge conveyor can move in the vertical direction relative to the main conveyor belt machine by the cable arrangement of the application; when the main adhesive tape conveyor in fig. 1 (c) needs to translate up and down, the first bridge conveyor and the second bridge conveyor can move in the vertical direction relative to the main adhesive tape conveyor in order to be laid by the cable of the application. When the first bridge type transfer conveyor and the second bridge type transfer conveyor need to move in parallel relative to the main adhesive tape conveying machine, the first power supply line and the second power supply line which are bent can be simultaneously dragged to move under the action of the sliding blanking mechanism. As shown in fig. 2, fig. 2 (a) shows that the first bridge type transfer conveyor and the second bridge type transfer conveyor can be separated along with the upper coal cutter and the lower coal cutter respectively in opposite directions according to the application; FIG. 2 (b) shows the first bridge transfer conveyor and the second bridge transfer conveyor according to the present application, which meet with the upper shearer and the lower shearer, respectively; fig. 2 (c) and (d) are respectively a first bridge conveyor and a second bridge conveyor which can be simultaneously arranged at the left end or the right end of the main adhesive tape conveying machine through the cable arrangement of the application.
The bridge type reversed loader cable grooves are formed in one side of the first bridge type reversed loader 5 and one side of the second bridge type reversed loader 6, each bridge type reversed loader cable groove of the first bridge type reversed loader comprises a fixed area cable groove I5-1 and a dragging area cable groove I5-2, and each bridge type reversed loader cable groove of the second bridge type reversed loader 6 comprises a fixed area cable groove II and a dragging area cable groove II.
As shown in fig. 3, fig. 3 (a) is a schematic layout of the first power supply line in the main conveyor, and fig. 3 (b) is a right side view of fig. 3 (a), which shows a schematic layout of the first power supply line in the first bridge conveyor; specifically, the first power supply line 9 is routed along the right fixed area cable trough of the main adhesive tape conveyor 4 and extends to the middle part of the main adhesive tape conveyor 4, then is led out to the right dragging area cable trough on the upper part of the right fixed area cable trough, is bent in the right dragging area cable trough, then extends out and is connected to the cable dragging component 7-1 on the sliding blanking mechanism 7, is led out to the dragging area cable trough I5-2 of the first bridge conveyor 5 by the cable dragging component 7-1, is bent, and then is led into the fixed area cable trough I5-1 on the lower part of the dragging area cable trough I5-2 by the middle part of the first bridge conveyor 5, and is routed to the two ends of the first bridge conveyor 5 respectively through the three-way junction box in the fixed area cable trough I5-1.
The second power supply line 10 is arranged along the left fixed area cable slot of the main belt conveyor 4 and extends to the middle part of the main belt conveyor 4, then is led out to the left dragging area cable slot at the upper part of the left fixed area cable slot, is bent in the left dragging area cable slot, then extends out and is connected to the cable dragging part 7-1 on the sliding blanking mechanism 7, is led out to the dragging area cable slot II of the second bridge conveyor 6 by the cable dragging part 7-1 and is bent, then is led into the fixed area cable slot II at the lower part of the dragging area cable slot II by the middle part of the second bridge conveyor 6, and is respectively arranged at two ends of the second bridge conveyor 6 in the fixed area cable slot II through a three-way junction box.
The length of the first power supply line 9 bent in the cable trough of the right dragging area is half of the length of the main conveyor belt 4 plus 20 meters, and the length of the first power supply line 9 bent in the cable trough I5-2 of the dragging area is half of the length of the first bridge conveyor 5 plus 5 meters; the length of the second power supply line 10 bent in the left dragging area cable slot is half of the length of the main conveyor belt 4 plus 20 meters, and the length of the second power supply line 10 bent in the dragging area cable slot II is half of the length of the second bridge conveyor 6 plus 5 meters.
The cable replacement mechanism 8 provided at the upper ends of the first bridge type reversed loader 5 and the second bridge type reversed loader 6 is an upper cable replacement mechanism, and the cable replacement mechanism 8 provided at the lower ends of the first bridge type reversed loader 5 and the second bridge type reversed loader 6 is a lower cable replacement mechanism.
Upper hoppers are arranged at the upper ends of the first bridge type reversed loader 5 and the second bridge type reversed loader 6, and upper cable replacing mechanisms are arranged on the two upper hoppers; lower hoppers are arranged at the lower ends of the first bridge type reversed loader 5 and the second bridge type reversed loader 6, and lower cable replacing mechanisms are arranged on the two lower hoppers.
The first power supply lines 9 which are arranged at two ends of the first bridge type reversed loader 5 are respectively connected to the movable combination switch 11 and the lower cable replacement mechanism; the mobile combination switch 11 to which the first power supply line 9 is connected can divide the first power supply line 9 into five cables: the first cable is used for supplying power to the sliding blanking mechanism 7, the second cable is used for supplying power to the upward moving mechanism of the first bridge type reversed loader 5 to drive the crawler belt, the third cable is used for supplying power to the downward moving mechanism of the first bridge type reversed loader 5 to drive the crawler belt, the fourth cable is used for supplying power to the conveying mechanism of the first bridge type reversed loader 5, and the fifth cable is connected with the upper cable replacement mechanism to supply power to the upper coal mining machine 1; the first power supply line 9 can supply power to the lower coal mining machine 2 through a lower cable replacing mechanism;
the second power supply lines 10 which are arranged at two ends of the second bridge type reversed loader 6 are respectively connected to the movable combination switch 11 and the lower cable replacement mechanism; the mobile combination switch 11 to which the second power supply line 10 is connected can divide the second power supply line 10 into five cables: the first cable is used for supplying power to the sliding blanking mechanism 7, the second cable is used for supplying power to the upward moving mechanism of the second bridge type reversed loader 6 to drive the crawler belt, the third cable is used for supplying power to the downward moving mechanism of the second bridge type reversed loader 6 to drive the crawler belt, the fourth cable is used for supplying power to the conveying mechanism of the second bridge type reversed loader 6, and the fifth cable is connected with the upper cable replacement mechanism to supply power to the upper coal mining machine 1; the second power supply line 10 can supply power to the lower shearer 2 via a lower cable replacement mechanism.
As shown in fig. 4, the upper cable replacement mechanism includes a left side power supply mechanism I8-1 provided on the first bridge type transfer machine 5, a right side power supply mechanism I8-2 provided on the second bridge type transfer machine 6, an auxiliary link I8-3 provided on the left side power supply mechanism I8-1 or the right side power supply mechanism I8-2 to ensure that the left side power supply mechanism I8-1 and the right side power supply mechanism I8-2 are aligned and a cable plug replacement lever I8-4 provided on the auxiliary link I8-3; the cable plug of the upper coal mining machine 1 can be switched between the left power supply mechanism I8-1 and the right power supply mechanism I8-2 to realize the switching of the first power supply line 9 or the second power supply line 10 to supply power to the upper coal mining machine 1.
The lower cable replacing mechanism comprises a left power supply mechanism II arranged on the first bridge type reversed loader 5, a right power supply mechanism II arranged on the second bridge type reversed loader 6, and an auxiliary connecting piece II arranged on the left power supply mechanism II or the right power supply mechanism II so as to ensure that the left power supply mechanism II and the right power supply mechanism II are aligned and a cable plug replacing rod II arranged on the auxiliary connecting piece II; the cable plug of the lower coal mining machine 2 can be switched between the left power supply mechanism II and the right power supply mechanism II to realize the switching of the first power supply line 9 or the second power supply line 10 to supply power to the lower coal mining machine 2.
The slide blanking mechanism 7 includes: the coal plough 7-2, the transverse pulleys arranged below the coal plough 7-2 are matched with the sliding rails on the main belt conveyor 4 to realize that the first bridge type reversed loader 5 and the second bridge type reversed loader 6 can move along the parallel direction of the main belt conveyor 4, the longitudinal pulleys arranged in the middle of the coal plough 7-2 are matched with the sliding rails on the first bridge type reversed loader 5 or the second bridge type reversed loader 6 to realize that the first bridge type reversed loader 5 and the second bridge type reversed loader 6 can move along the vertical direction of the main belt conveyor 4 and the cable dragging part 7-1 connected to the coal plough 7-2 is used for dragging the first power supply line 9 or the second power supply line 10.
The five-way power supply line is characterized in that two ways of 35kV high-voltage power are distributed by a power distribution station and enter a temporary power transformation and distribution cabinet outside a stope, and then the 35kV high-voltage power is converted into the five ways of 10kV high-voltage power supply line by the temporary power transformation and distribution cabinet.
Example 2:
the embodiment discloses a power supply line dragging method suitable for strip mine full continuous miner, which is realized by the power supply system suitable for strip mine full continuous miner in the embodiment 1; when the coal mining equipment works, the upper hopper of the first bridge type transfer conveyor is connected with the upper coal mining machine, and the first power supply line supplies power to the upper coal mining machine through the upper cable replacement mechanism; the lower hopper of the second bridge type reversed loader is connected with the lower coal mining machine, and the second power supply line supplies power to the lower coal mining machine through the lower cable replacing mechanism.
When the main adhesive tape conveyor needs to translate up and down, the first bridge type transfer conveyor and the second bridge type transfer conveyor can both drag and bend the first power supply circuit and the second power supply circuit to move under the action of the sliding blanking mechanism, so that the first bridge type transfer conveyor and the second bridge type transfer conveyor can move in the vertical direction relative to the main adhesive tape conveyor.
When the first bridge type transfer conveyor and the second bridge type transfer conveyor need to move in parallel relative to the main adhesive tape conveying machine, the first power supply line and the second power supply line which are bent can be simultaneously dragged to move under the action of the sliding blanking mechanism.
Example 3:
the embodiment discloses a power supply line switching method suitable for strip mine full continuous miner, which is realized by the power supply system suitable for strip mine full continuous miner in the embodiment 1; before the power supply line is switched, the upper hopper of the first bridge type reversed loader is connected with the upper coal mining machine, and the first power supply line supplies power to the upper coal mining machine through an upper cable replacement mechanism; the lower hopper of the second bridge type reversed loader is connected with the lower coal cutter, and the second power supply line supplies power to the lower coal cutter through the lower cable replacement mechanism; fig. 5 is a schematic diagram of power supply line switching, fig. 6 is a combined schematic diagram of a first bridge type reversed loader and a second bridge type reversed loader, and fig. 7 is a schematic flow diagram of a power supply line switching method;
the power supply line switching includes the steps of:
step 1, confirming a power supply line switching position, and enabling a first bridge type reversed loader and a second bridge type reversed loader to move towards the power supply line switching position;
step 2, aligning and combining the first bridge type transfer conveyor and the second bridge type transfer conveyor to enable an auxiliary connecting piece I of an upper cable replacement mechanism to be connected with a left power supply mechanism I and a right power supply mechanism I at the same time and an auxiliary connecting piece II of a lower cable replacement mechanism to be connected with the left power supply mechanism II and the right power supply mechanism II at the same time, wherein a system is powered off, a UPS intervenes in a control system, and the upper cable replacement mechanism and the lower cable replacement mechanism are electrified;
step 3: the cable plug of the upper coal mining machine is pulled out of the upper cable replacing mechanism of the first bridge type reversed loader, the reversing rod of the cable plug is reversed, the cable plug of the lower coal mining machine is pulled out of the lower cable replacing mechanism of the second bridge type reversed loader, and the reversing rod of the cable plug is reversed;
step 4: the cable plug of the upper coal mining machine is inserted into the upper cable replacing mechanism of the second bridge type reversed loader, and the cable plug of the lower coal mining machine is inserted into the lower cable replacing mechanism of the first bridge type reversed loader; after confirming that the cable plug is well inserted and the line insulation is detected, the system is electrified, the upper cable replacement mechanism and the lower cable replacement mechanism are powered off, and the UPS is withdrawn;
step 5, switching to a second power supply line to supply power to the upper coal mining machine through the upper cable replacement mechanism, and switching to a first power supply line to supply power to the lower coal mining machine through the lower cable replacement mechanism; the first bridge type transfer conveyor and the second bridge type transfer conveyor are separated and continuously enter a normal working state.
Claims (8)
1. The power supply system suitable for the strip mine full-continuous coal mining equipment is characterized by comprising an upper coal mining machine (1) positioned on an upper coal mining working face, a lower coal mining machine (2) positioned on a lower coal mining working face, a transfer hoist (3) connected with the lower coal mining machine (2), a main conveyor belt machine (4) arranged between the upper coal mining machine (1) and the lower coal mining machine (2) and positioned on the same plane with the upper coal mining machine (1), wherein the main conveyor belt machine (4) is parallel to the travelling directions of the upper coal mining machine (1) and the lower coal mining machine (2), and a first bridge conveyor belt machine (5) and a second bridge conveyor belt machine (6) which are arranged on the main conveyor belt machine (4) and are parallel to each other and are perpendicular to the main conveyor belt machine (4); the first bridge type transfer conveyor (5) and the second bridge type transfer conveyor (6) are connected with the main conveyor belt machine (4) through a sliding blanking mechanism (7) so that the first bridge type transfer conveyor (5) and the second bridge type transfer conveyor (6) can move along the main conveyor belt machine (4) vertically or in parallel, and cable replacement mechanisms (8) are respectively arranged at the upper end and the lower end of the first bridge type transfer conveyor (5) and the second bridge type transfer conveyor (6);
the power supply system comprises five power supply lines:
the first power supply circuit (9) is distributed to two ends of the first bridge type reversed loader (5) in sequence through a sliding blanking mechanism (7) connected with the main belt conveyor (4), the first bridge type reversed loader (5) and the first bridge type reversed loader (5) in a branching way so as to supply power to the upper coal cutter (1) or the lower coal cutter (2);
the second power supply circuit (10) is distributed to two ends of the second bridge type transfer conveyor (6) in a branching way through a sliding blanking mechanism (7) connected with the main conveyor belt machine (4), the second bridge type transfer conveyor (6) and the second bridge type transfer conveyor (6) in sequence so as to supply power to the upper coal mining machine (1) or the lower coal mining machine (2);
the third power supply line is used for supplying power to the main adhesive tape conveying machine (4); the fourth power supply line and the fifth power supply line are standby circuits;
the first power supply circuit (9) supplies power to the upper coal mining machine (1), the second power supply circuit (10) supplies power to the lower coal mining machine (2), and the second power supply circuit (10) supplies power to the upper coal mining machine (1) when the first power supply circuit (9) supplies power to the lower coal mining machine (2) through the cable replacing mechanism (8);
the left side and the right side of the main adhesive tape conveying machine (4) are provided with main adhesive tape conveying machine cable grooves which are parallel to each other, and each main adhesive tape conveying machine cable groove comprises a fixed area cable groove (4-1) and a dragging area cable groove (4-2);
the bridge type transfer conveyor comprises a first bridge type transfer conveyor (5) and a second bridge type transfer conveyor (6), wherein one side of the first bridge type transfer conveyor and one side of the second bridge type transfer conveyor are respectively provided with a bridge type transfer conveyor cable groove, each bridge type transfer conveyor cable groove of the first bridge type transfer conveyor comprises a fixed area cable groove I (5-1) and a dragging area cable groove I (5-2), and each bridge type transfer conveyor cable groove of the second bridge type transfer conveyor (6) comprises a fixed area cable groove II and a dragging area cable groove II;
the first power supply circuit (9) is arranged along a right fixed area cable groove of the main conveyor belt machine (4) and extends to the middle part of the main conveyor belt machine (4), then is led out to a right dragging area cable groove at the upper part of the right fixed area cable groove, is bent in the right dragging area cable groove, then extends out and is connected to a cable dragging component (7-1) on the sliding blanking mechanism (7), is led out to a dragging area cable groove I (5-2) of the first bridge conveyor (5) by the cable dragging component (7-1), is bent, and is led into a fixed area cable groove I (5-1) at the lower part of the dragging area cable groove I (5-2) from the middle part of the first bridge conveyor (5), and is respectively arranged to two ends of the first bridge conveyor (5) in the fixed area cable groove I (5-1) through a tee junction box;
the second power supply circuit (10) is arranged along a left fixed area cable groove of the main adhesive tape conveying machine (4) and extends to a left dragging area cable groove at the upper part of the left fixed area cable groove after being arranged in the middle of the main adhesive tape conveying machine (4), extends out of the left dragging area cable groove after being bent in the left dragging area cable groove and is connected to a cable dragging part (7-1) on the sliding blanking mechanism (7), and is led out of the cable dragging part (7-1) to a dragging area cable groove II of the second bridge type transfer conveyor (6) and bent, and then the fixed area cable groove II at the lower part of the dragging area cable groove II is led in the middle of the second bridge type transfer conveyor (6), and is respectively arranged at two ends of the second bridge type transfer conveyor (6) in the fixed area cable groove II through a three-way junction box.
2. The power supply system for the strip mine full continuous miner according to claim 1, characterized in that the length of the first power supply line (9) bent in the right-side dragging area cable slot is half of the length of the main conveyor belt machine (4) plus 20 meters, and the length of the first power supply line (9) bent in the dragging area cable slot I (5-2) is half of the length of the first bridge conveyor (5) plus 5 meters;
the length of the second power supply line (10) bent in the left dragging area cable slot is half of the length of the main conveyor belt (4) plus 20 meters, and the length of the second power supply line (10) bent in the dragging area cable slot II is half of the length of the second bridge conveyor (6) plus 5 meters.
3. The power supply system for the strip mine full continuous miner apparatus as claimed in claim 1, wherein the cable replacement mechanism (8) provided at the upper ends of the first bridge conveyor (5) and the second bridge conveyor (6) is an upper cable replacement mechanism, and the cable replacement mechanism (8) provided at the lower ends of the first bridge conveyor (5) and the second bridge conveyor (6) is a lower cable replacement mechanism;
the upper ends of the first bridge type transfer conveyor (5) and the second bridge type transfer conveyor (6) are respectively provided with an upper hopper, and the two upper hoppers are provided with the upper cable replacement mechanisms; the lower ends of the first bridge type reversed loader (5) and the second bridge type reversed loader (6) are respectively provided with a lower hopper, and the two lower hoppers are provided with the lower cable replacement mechanisms;
the first power supply circuits (9) which are arranged at two ends of the first bridge type reversed loader (5) are respectively connected to the movable combination switch (11) and the lower cable replacement mechanism; the movable combination switch (11) connected with the first power supply line (9) can divide the first power supply line (9) into five cables: the first cable is used for supplying power to the sliding blanking mechanism (7), the second cable is used for supplying power to the upward moving mechanism of the first bridge type reversed loader (5) to drive the crawler belt, the third cable is used for supplying power to the downward moving mechanism of the first bridge type reversed loader (5) to drive the crawler belt, the fourth cable is used for supplying power to the conveying mechanism of the first bridge type reversed loader (5), and the fifth cable is connected with the upper cable replacement mechanism to supply power to the upper coal mining machine (1); the first power supply line (9) can supply power to the lower coal mining machine (2) through the lower cable replacement mechanism;
second power supply lines (10) which are arranged at two ends of the second bridge type reversed loader (6) are respectively connected to the movable combination switch (11) and the lower cable replacement mechanism; the movable combination switch (11) connected with the second power supply line (10) can divide the second power supply line (10) into five cables: the first cable is used for supplying power to the sliding blanking mechanism (7), the second cable is used for supplying power to an upward moving mechanism of the second bridge type reversed loader (6) to drive the crawler belt, the third cable is used for supplying power to a downward moving mechanism of the second bridge type reversed loader (6) to drive the crawler belt, the fourth cable is used for supplying power to a conveying mechanism of the second bridge type reversed loader (6), and the fifth cable is connected with an upper cable replacement mechanism to supply power to the upper coal mining machine (1); the second power supply line (10) can supply power to the lower coal mining machine (2) through the lower cable replacing mechanism.
4. A power supply system for a strip mine full continuous miner according to claim 3, characterized in that the upper cable replacement mechanism comprises a left side power supply mechanism I (8-1) provided on the first bridge conveyor (5), a right side power supply mechanism I (8-2) provided on the second bridge conveyor (6), an auxiliary connection I (8-3) provided on the left side power supply mechanism I (8-1) or the right side power supply mechanism I (8-2) to ensure that the left side power supply mechanism I (8-1) and the right side power supply mechanism I (8-2) are aligned and a cable plug replacement bar I (8-4) provided on the auxiliary connection I (8-3); the cable plug of the upper coal mining machine (1) can be switched between a left power supply mechanism I (8-1) and a right power supply mechanism I (8-2) to realize switching of a first power supply line (9) or a second power supply line (10) to supply power to the upper coal mining machine (1);
the lower cable replacing mechanism comprises a left power supply mechanism II arranged on the first bridge type reversed loader (5), a right power supply mechanism II arranged on the second bridge type reversed loader (6), and an auxiliary connecting piece II arranged on the left power supply mechanism II or the right power supply mechanism II so as to ensure that the left power supply mechanism II and the right power supply mechanism II are aligned and a cable plug replacing rod II arranged on the auxiliary connecting piece II; the cable plug of the lower coal mining machine (2) can be switched between a left power supply mechanism II and a right power supply mechanism II to realize the switching of a first power supply line (9) or a second power supply line (10) to supply power to the lower coal mining machine (2).
5. The power supply system for a strip mine full continuous miner according to claim 1, characterized in that the sliding blanking mechanism (7) comprises: the coal plough (7-2), the transverse pulley arranged below the coal plough (7-2) can be matched with the sliding rail on the main belt conveyor (4) to realize that the first bridge type reversed loader (5) and the second bridge type reversed loader (6) can both move along the parallel direction of the main belt conveyor (4), and the longitudinal pulley arranged in the middle of the coal plough (7-2) can be matched with the sliding rail on the first bridge type reversed loader (5) or the second bridge type reversed loader (6) to realize that the first bridge type reversed loader (5) and the second bridge type reversed loader (6) can both move along the vertical direction of the main belt conveyor (4) and the cable dragging component (7-1) connected to the coal plough (7-2) can drag the first power supply line (9) or the second power supply line (10).
6. The power supply system for the strip mine full continuous miner according to claim 1, wherein the five power supply lines are five 10kV power supply lines, wherein two 35kV high-voltage power is distributed by a power distribution station to enter a temporary power transformation and distribution cabinet outside a stope, and the temporary power transformation and distribution cabinet converts the 35kV high-voltage power into the five 35kV high-voltage power supply lines.
7. A power supply line dragging method suitable for a strip mine full continuous miner, characterized in that the method is realized by the power supply system suitable for the strip mine full continuous miner according to any one of claims 1 to 5; when the coal mining equipment works, the upper hopper of the first bridge type transfer conveyor is connected with the upper coal mining machine, and the first power supply line supplies power to the upper coal mining machine through the upper cable replacement mechanism; the lower hopper of the second bridge type reversed loader is connected with the lower coal cutter, and the second power supply line supplies power to the lower coal cutter through the lower cable replacement mechanism;
when the main belt conveyor needs to translate up and down, the first bridge type transfer conveyor and the second bridge type transfer conveyor can both drag the bent first power supply line and the bent second power supply line to move under the action of the sliding blanking mechanism, so that the first bridge type transfer conveyor and the second bridge type transfer conveyor can move in the vertical direction relative to the main belt conveyor;
when the first bridge type transfer conveyor and the second bridge type transfer conveyor need to move in parallel relative to the main adhesive tape conveying machine, the first power supply line and the second power supply line which are bent can be simultaneously dragged to move under the action of the sliding blanking mechanism.
8. A power supply line switching method suitable for a strip mine full continuous miner, characterized in that the method is realized by the power supply system suitable for the strip mine full continuous miner according to any one of claims 1 to 5; before the power supply line is switched, the upper hopper of the first bridge type reversed loader is connected with the upper coal mining machine, and the first power supply line supplies power to the upper coal mining machine through an upper cable replacement mechanism; the lower hopper of the second bridge type reversed loader is connected with the lower coal cutter, and the second power supply line supplies power to the lower coal cutter through the lower cable replacement mechanism; the power supply line switching includes the steps of:
step 1, confirming a power supply line switching position, and enabling a first bridge type reversed loader and a second bridge type reversed loader to move towards the power supply line switching position;
step 2, aligning and combining the first bridge type transfer conveyor and the second bridge type transfer conveyor to enable an auxiliary connecting piece I of an upper cable replacement mechanism to be connected with a left power supply mechanism I and a right power supply mechanism I at the same time and an auxiliary connecting piece II of a lower cable replacement mechanism to be connected with the left power supply mechanism II and the right power supply mechanism II at the same time, wherein a system is powered off, a UPS intervenes in a control system, and the upper cable replacement mechanism and the lower cable replacement mechanism are electrified;
step 3: the cable plug of the upper coal mining machine is pulled out of the upper cable replacing mechanism of the first bridge type reversed loader, the reversing rod of the cable plug is reversed, the cable plug of the lower coal mining machine is pulled out of the lower cable replacing mechanism of the second bridge type reversed loader, and the reversing rod of the cable plug is reversed;
step 4: the cable plug of the upper coal mining machine is inserted into the upper cable replacing mechanism of the second bridge type reversed loader, and the cable plug of the lower coal mining machine is inserted into the lower cable replacing mechanism of the first bridge type reversed loader; after confirming that the cable plug is well inserted and the line insulation is detected, the system is electrified, the upper cable replacement mechanism and the lower cable replacement mechanism are powered off, and the UPS is withdrawn;
step 5, switching to a second power supply line to supply power to the upper coal mining machine through the upper cable replacement mechanism, and switching to a first power supply line to supply power to the lower coal mining machine through the lower cable replacement mechanism; the first bridge type transfer conveyor and the second bridge type transfer conveyor are separated and continuously enter a normal working state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110652480.XA CN113309568B (en) | 2021-06-11 | 2021-06-11 | Power supply system and method suitable for strip mine full-continuous coal mining equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110652480.XA CN113309568B (en) | 2021-06-11 | 2021-06-11 | Power supply system and method suitable for strip mine full-continuous coal mining equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113309568A CN113309568A (en) | 2021-08-27 |
| CN113309568B true CN113309568B (en) | 2023-09-08 |
Family
ID=77378239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110652480.XA Active CN113309568B (en) | 2021-06-11 | 2021-06-11 | Power supply system and method suitable for strip mine full-continuous coal mining equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113309568B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1202717A (en) * | 1967-03-17 | 1970-08-19 | Coal Industry Patents Ltd | Improvements in or relating to coal mining machine supply cable haulting equipment |
| US4485666A (en) * | 1981-09-11 | 1984-12-04 | Coal Industry (Patents) Limited | Gas analyzer |
| CN101320024A (en) * | 2008-07-15 | 2008-12-10 | 煤炭科学研究总院抚顺分院 | Mine gas beam tube monitoring system and recognition method for gas explosivity and fire danger |
| CN102889084A (en) * | 2012-09-05 | 2013-01-23 | 中国煤炭科工集团太原研究院 | Continuous mining technique for thin coal layer of opencast coal mine |
| CN208220778U (en) * | 2018-02-08 | 2018-12-11 | 中煤科工集团沈阳设计研究院有限公司 | A kind of opencut end side elevator |
| CN110460666A (en) * | 2019-08-15 | 2019-11-15 | 西安科技大学 | The daily mine emergency communication means combined with emergency and system |
| CN111711195A (en) * | 2020-07-22 | 2020-09-25 | 通号(北京)轨道工业集团有限公司轨道交通技术研究院 | In-phase power supply compensation device for electrified railway |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2526336C (en) * | 2005-11-09 | 2013-09-17 | Suncor Energy Inc. | Method and apparatus for oil sands ore mining |
| DE102008047582B3 (en) * | 2008-09-17 | 2010-02-04 | Rag Aktiengesellschaft | Longwall equipment with a height adjustable roller skid loader on the longwall conveyor |
-
2021
- 2021-06-11 CN CN202110652480.XA patent/CN113309568B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1202717A (en) * | 1967-03-17 | 1970-08-19 | Coal Industry Patents Ltd | Improvements in or relating to coal mining machine supply cable haulting equipment |
| US4485666A (en) * | 1981-09-11 | 1984-12-04 | Coal Industry (Patents) Limited | Gas analyzer |
| CN101320024A (en) * | 2008-07-15 | 2008-12-10 | 煤炭科学研究总院抚顺分院 | Mine gas beam tube monitoring system and recognition method for gas explosivity and fire danger |
| CN102889084A (en) * | 2012-09-05 | 2013-01-23 | 中国煤炭科工集团太原研究院 | Continuous mining technique for thin coal layer of opencast coal mine |
| CN208220778U (en) * | 2018-02-08 | 2018-12-11 | 中煤科工集团沈阳设计研究院有限公司 | A kind of opencut end side elevator |
| CN110460666A (en) * | 2019-08-15 | 2019-11-15 | 西安科技大学 | The daily mine emergency communication means combined with emergency and system |
| CN111711195A (en) * | 2020-07-22 | 2020-09-25 | 通号(北京)轨道工业集团有限公司轨道交通技术研究院 | In-phase power supply compensation device for electrified railway |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113309568A (en) | 2021-08-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104816728B (en) | Underground station structure of the city track traffic engineering with stop line | |
| US20080066640A1 (en) | Over/under monorail system for longwall mining operations | |
| CN101823446A (en) | Contact rail expansion joint | |
| CN113309568B (en) | Power supply system and method suitable for strip mine full-continuous coal mining equipment | |
| BRMU8603058U2 (en) | constructive arrangement introduced in production line track plates | |
| CN114542094A (en) | Arrangement mode for battery car group rail transfer in miniature shield tunnel | |
| CN211174111U (en) | Strip mine continuous mining system | |
| CN108386194A (en) | A kind of continuous coal mining system of open coal mine modularization big cross section and method | |
| CN102748027A (en) | Reverse-procedure installation technology for fully mechanized mining face | |
| CN102815231B (en) | Expansion joint of subway contact rails | |
| CN206088798U (en) | A automation system of plugging into for hoist remote communications | |
| CN208633835U (en) | A kind of Mechanized that equipment train is separated with glue fortune crossheading | |
| CN201410894Y (en) | Safety slide contact wire processing device for rotary turntable | |
| CN106240377A (en) | Overhead system for portable digger | |
| CN205028111U (en) | A complete distributed field bus controlling means for bulk cargo is carried | |
| CN202340066U (en) | Double-bus single-section GIS (gas insulated switchgear) distribution device circuit layout structure | |
| CN113314361B (en) | Cable rapid alternating power supply replacement device and method suitable for multiple equipment groups | |
| CN209072033U (en) | A kind of scalable cable handler of automatic moving type | |
| CN105857117A (en) | Novel rail yard return cable and steel rail wiring method based on non-track circuit mode | |
| CN207175254U (en) | A kind of tactile gliding style straddle truck electric power system | |
| CN106276613B (en) | A kind of automatic docking system and method for crane remote communication | |
| CN209516585U (en) | A kind of coal electric cable that sectional efficiently utilizes | |
| CN208890052U (en) | A kind of trolley line connector | |
| CN203247026U (en) | Floor type trolley line power supplying device of gantry crane | |
| CN205029331U (en) | Few big ring of subregion cluster structure of urban rail transit 35kV middling pressure network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |