CN113417693B - Safety migration method for mining fully-mechanized mining equipment under steep slope - Google Patents
Safety migration method for mining fully-mechanized mining equipment under steep slope Download PDFInfo
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- CN113417693B CN113417693B CN202110790838.5A CN202110790838A CN113417693B CN 113417693 B CN113417693 B CN 113417693B CN 202110790838 A CN202110790838 A CN 202110790838A CN 113417693 B CN113417693 B CN 113417693B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/08—Shifting conveyors or other transport devices from one location at the working face to another
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61J—SHIFTING OR SHUNTING OF RAIL VEHICLES
- B61J1/00—Turntables; Traversers; Transporting rail vehicles on other rail vehicles or dollies
Abstract
The invention belongs to the field of a mining fully-mechanized mining equipment train migration method, and particularly relates to a mining fully-mechanized mining equipment train downslope safety migration method. The method adopts the cooperation of the steel wire rope and the movable/fixed pulleys, simplifies the complex equipment train migration process, optimizes the traditional multi-traction winch cooperation migration link, can effectively avoid safety accidents such as sliding and running of the equipment train in the migration process, and greatly improves the safety and reliability of the equipment train in the abrupt slope section.
Description
Technical Field
The invention relates to the technical field of fully mechanized mining equipment train traction, in particular to a mining fully mechanized mining equipment train downslope safety migration method.
Background
The comprehensive mechanized coal mining process mode, namely the coal mining process of coal face coal breaking, coal loading, coal conveying, goaf supporting and goaf processing, is also called comprehensive coal mining. With the progress of scientific technology and the development of novel equipment, comprehensive mechanized coal mining is increasingly becoming the preferred coal mining method in various large mining areas, because the comprehensive coal mining technology can effectively shorten the time consumption of coal mining, and can provide reliable support protection for workers, the comprehensive coal mining technology has become the most effective and most efficient coal mining method in the coal mining process in China.
With the advancement of safe and efficient work of coal mines, comprehensive mechanized coal mining working faces are more and more, and the use of fully mechanized coal mining equipment is continuously increasing. Safety in the process of transferring the fully mechanized mining equipment train becomes an important point of research, and particularly, the technical method for the fully mechanized mining equipment train to descend a steep slope is provided.
The traditional fully mechanized mining equipment migration method is difficult to meet the safety coefficient requirement when descending a steep slope, has low driving safety, and is extremely easy to cause serious electromechanical accidents such as sliding, running and the like.
Therefore, there is a great need to design a method for safely migrating a mining fully-mechanized mining equipment train down a steep slope.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides a safety migration method for a mining fully-mechanized mining equipment train on a steep slope.
In order to achieve the technical purpose and the technical effect, the invention is realized by the following technical scheme:
a mining fully-mechanized mining equipment train downslope safety migration method comprises the following steps:
s1: measuring the length S of a steep-slope section roadway in a downhole field 1 Slope alpha;
s2: summarizing the length S of the underground mining equipment train 2 Weight Q 0 ；
S3: selecting equipment trains and steel wire ropes;
1) Contrasting the roadway length S of the steep slope section 1 Length S of train with mining equipment 2 The minimum value of the equipment train and the steel wire rope is adopted, and the minimum value is the length of the mining equipment train in the steep slope section, and is recorded as S; for the safe migration of the mining equipment train, the invention selectively sets the mining equipment train to be in a steep slope section, namely S=S 2 ；
2) And selecting and checking a traction winch, wherein a calculation formula of the traction force born by the winch is as follows:
F 1 ＝m 1 g(sinα+f 1 cosα)+m 2 g(sinα+f 2 cosα)
wherein F is 1 : rated traction force of traction winch, unit: KN;
m 1 maximum allowable traction mass, unit: kg;
m 2 the mass of the steel wire rope in the maximum traction range of the traction winch is as follows: kg;
alpha is the gradient of the roadway, and the unit is: a degree;
f 1 taking 0.015 for the friction coefficient of the wheels and the track of the mining equipment train;
f 2 the friction coefficient between the steel wire rope and the bottom plate and between the steel wire rope and the carrier roller is 0.15-0.2 when the steel wire rope is supported on the carrier roller, 0.25-0.4 when the steel wire rope is partially supported on the carrier roller, and 0.4-0.6 when the steel wire rope is supported on the floor; taking f 2 ＝0.2；
g is gravity acceleration, 9.8m/s 2 ；
3) According to F 1 The value selection traction winch is arranged at the tail part of the train near the working face side of the mining equipment train, and the traction capacity of the winch is required to be larger than the traction force F born by the winch 1 ；
4) According to F 1 Value selection type steel wire rope and breaking force sum Q of steel wire rope z Is greater than F 1 ；
5) Determining the actual use quantity of the steel wire ropes, wherein the calculation formula is as follows:
wherein 6.5 is a standard safety coefficient; the object carrying of the single rope winding type lifting device regulated in the coal mine safety regulations is not less than 6.5;
m is a safety coefficient when using a single strand steel wire rope to move mining equipment trains, and m=q z ÷F 1 ；
6) According to the number of the steel wire ropes required to be used in the determined site, a steel wire rope use mode is designed; when n=1, the safety migration of the mining equipment train can be completed by using 1 steel wire rope; when n=2, adding 1 fixed pulley, and adding and fixing the fixed pulley at a first upright post of an end bracket of a fully-mechanized mining face by using a phi 42 thick anchor chain; when n=3, a movable pulley is additionally arranged, and the movable pulley is additionally fixed on the traction winch by using a phi 42 thick anchor chain;
s4: the equipment train starts to be migrated, and the specific operation mode is as follows:
1) Arranging traction winches according to the traction winches confirmed in the step S33 and the arrangement modes of the traction winches, and arranging the use modes of the steel wire ropes according to the number of the confirmed steel wire ropes and the number of pulleys;
2) All staff except train staff for moving mining equipment in a roadway where the clear and reverse steep slope is located;
3) 1 group of prop-pressing bars and 1 group of cross-shaped railings are arranged in front of a mining equipment train (on the belt head side), the distances between the prop-pressing bars and the cross-shaped railings and the equipment train (on the belt head side) are 1-2 m larger than the planned migration distance of the equipment train, and the included angle between the prop-pressing bars and the ground is 70-80 degrees;
4) Before the equipment train is transferred, firstly removing 3 groups of prop-pressing bars in the middle of the equipment train, then loosening clamping rail car claws, transferring the equipment train to a working surface by 10-20 cm by using a traction winch, stopping the equipment train after wheels of each train leave from a car stopper, tightly holding the clamping rail car claws and the rails, and then removing all the car stoppers and all prop-pressing bars;
5) Firstly loosening a claw of a first rail clamp of a mining equipment train, simultaneously operating an operating handle of the rail clamp, and extending a hydraulic cylinder between the two rail clamps to enable the first rail clamp to be moved into place, and then enabling the claw of the first rail clamp and a rail to be in a clasping state;
6) After the claw of the second rail clamping vehicle of the mining equipment train is released and is communicated with a traction winch driver through signals, the traction winch driver operates a winch to slowly release a steel wire rope, the mining equipment train is slowly moved down a slope, meanwhile, a worker at the rail clamping vehicle operates a rail clamping vehicle operating handle, and a hydraulic jack between the two rail clamping vehicles is contracted; after the hydraulic jacks of the rail clamping vehicle are completely contracted, the hydraulic jacks are communicated with a winch driver through signals, the winch driver stops operating the winch and locks the traction winch, and a worker at the rail clamping vehicle tightly holds the claw of the second rail clamping vehicle with the rail;
7) Repeating steps 5) and 6) until the mining equipment train is migrated to the predetermined migration location.
2. The mining fully-mechanized mining equipment train downslope safety migration method of claim 1, wherein S4: the start migration equipment train further comprises the steps of:
8) After the equipment train is transferred, the hydraulic clamping rail car claw of the equipment train is tightly held with the rail, then a car stopper is arranged on the downhill direction of each train pedestrian side wheel of the mining equipment train, and the train is in tight contact with the car stopper, so that the car stopper and the rail are in a tightly held state; 1 group (4) prop-pressing bars are arranged at the first train on the head side of the equipment train belt, cross-shaped railings are arranged, 3 groups (2) prop-pressing bars are respectively arranged at proper positions in the middle of the equipment train, and the effectiveness of preventing the equipment train from running is ensured.
Further, as described above, the safety migration method for the steep slope of the mining fully-mechanized mining equipment train is adopted, and the sum Q of breaking force of the steel wire rope is calculated z The sum Q of breaking force of the steel wire ropes of different types is the inherent attribute of the steel wire ropes z Nor are they identical.
Furthermore, according to the safety migration method for the mining fully-mechanized mining equipment train downslope, the fixed pulleys and the movable pulleys are the same in model number and different in use mode, and the pulleys are selected to meet the requirements of force and safety factors.
Further, as described above, the method for safely migrating the mining fully-mechanized mining equipment train down a steep slope uses DWX45-150/110 type monomers, 1 group of prop-pressing bars arranged in front of the mining equipment train consists of 4 monomers, and each group of prop-pressing bars arranged in the middle of the mining equipment train consists of 2 monomers.
Further, according to the method for safely migrating the mining fully-mechanized mining equipment trains down the steep slope, the mining equipment train rail clamps comprise a group of two trains, the middle of the mining equipment train rail clamps are connected by hydraulic jacks, and each train rail is provided with a claw for tightly holding the rail to prevent sliding.
Further, according to the safety migration method for the downhill slope of the mining fully-mechanized mining equipment trains, the car stoppers are arranged on two wheels on the pedestrian side of each mining equipment train when in use, and one car stopper is respectively arranged in the downhill slope direction of each wheel.
Further, according to the safety migration method for the steep slope of the mining fully-mechanized mining equipment train, the end brackets are 1 frame in total and are composed of 2 groups; wherein each group is divided into two parts connected through a hydraulic balance jack; before the equipment train is transferred, the end support is required to be firmly lifted, so that the end support is in full effective contact with the roadway top plate and the roadway bottom plate.
The beneficial effects of the invention are as follows:
1. the invention calculates and selects the mining equipment train migration equipment, and ensures the safe migration of the mining equipment train.
2. The invention designs a traction mode suitable for obtaining the mining equipment train under the condition of steep slope, and greatly improves the migration efficiency of the mining equipment train in the steep slope roadway section.
3. The invention solves the problems that the mining equipment train is easy to run and slide in the abrupt slope section, and increases the safety and reliability of the mining equipment train migration.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a mining equipment train of the present invention;
FIG. 2 is an arrangement of a mining equipment train, winch and wire rope;
FIG. 3 is a schematic diagram of a manner of use of a wire rope and pulley;
1-tool car, 2-accessory car, 3-emergency water pump and switch car, 4-emulsion automatic recovery device, 5-liquid return tank, 6-centrifugal pump, 7-spray pump, 8-spray pump, 9-cooling water return tank, 10-high-low pressure filtration station, 11-unit control system and pump station switch, 12-working face centralized control system, 13-combination switch, 14-combination switch, 15-3150 shift, 16-3150 shift, 17-clamp rail car, 18-clamp rail, 19-2500 shift, 20-500 shift, 21-cable car, 22-cable car, 23-cable car, 24-coal body water injection tank, 25-coal body water injection pump and switch, 26-traction winch, 27-movable pulley, 28-fixed pulley, 29-end bracket, 30-tunnel roof, 31-tunnel floor, 32-wire rope, 33-mining equipment train wheel, 34-car stopper, 35-track, 36-hydraulic jack, 37-38-horizontal line.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
A mining fully-mechanized mining equipment train downslope safety migration method comprises the following steps:
s1: measuring the length S of a steep-slope section roadway in a downhole field 1 Slope alpha;
s2: summarizing the length S of the underground mining equipment train 2 Weight Q 0 ；
S3: selecting equipment trains and steel wire ropes;
1) Contrasting the roadway length S of the steep slope section 1 Length S of train with mining equipment 2 The minimum value of the equipment train and the steel wire rope is adopted, and the minimum value is the length of the mining equipment train in the steep slope section, and is recorded as S; for the safe migration of the mining equipment train, the invention selectively sets the mining equipment train to be in a steep slope section, namely S=S 2 ；
2) And selecting and checking a traction winch, wherein a calculation formula of the traction force born by the winch is as follows:
F 1 ＝m 1 g(sinα+f 1 cosα)+m 2 g(sinα+f 2 cosα)
wherein F is 1 : rated traction force of traction winch, unit: KN;
m 1 maximum allowable traction mass, unit: kg;
m 2 the mass of the steel wire rope in the maximum traction range of the traction winch is as follows: kg;
alpha is the gradient of the roadway, and the unit is: a degree;
f 1 taking 0.015 for the friction coefficient of the wheels and the track of the mining equipment train;
f 2 the friction coefficient between the steel wire rope and the bottom plate and between the steel wire rope and the carrier roller is 0.15-0.2 when the steel wire rope is supported on the carrier roller, 0.25-0.4 when the steel wire rope is partially supported on the carrier roller, and 0.4-0.6 when the steel wire rope is supported on the floor; taking f 2 ＝0.2；
g is gravity acceleration, 9.8m/s 2 ；
3) According to F 1 The value selection traction winch is arranged at the tail part of the train near the working face side of the mining equipment train, and the traction capacity of the winch is required to be larger than the traction force F born by the winch 1 ；
4) According to F 1 Value selection type steel wire rope and breaking force sum Q of steel wire rope z Is greater than F 1 ；
5) Determining the actual use quantity of the steel wire ropes, wherein the calculation formula is as follows:
wherein 6.5 is a standard safety coefficient; the object carrying of the single rope winding type lifting device regulated in the coal mine safety regulations is not less than 6.5;
m is a safety coefficient when using a single strand steel wire rope to move mining equipment trains, and m=q z ÷F 1 ；
6) According to the number of the steel wire ropes required to be used in the determined site, a steel wire rope use mode is designed; when n=1, the safety migration of the mining equipment train can be completed by using 1 steel wire rope; when n=2, adding 1 fixed pulley, and adding and fixing the fixed pulley at a first upright post of an end bracket of a fully-mechanized mining face by using a phi 42 thick anchor chain; when n=3, a movable pulley is additionally arranged, and the movable pulley is additionally fixed on the traction winch by using a phi 42 thick anchor chain;
s4: the equipment train starts to be migrated, and the specific operation mode is as follows:
1) Arranging traction winches according to the traction winches confirmed in the step S33 and the arrangement modes of the traction winches, and arranging the use modes of the steel wire ropes according to the number of the confirmed steel wire ropes and the number of pulleys;
2) All staff except train staff for moving mining equipment in a roadway where the clear and reverse steep slope is located;
3) 1 group of prop-pressing bars and 1 group of cross-shaped railings are arranged in front of a mining equipment train (on the belt head side), the distances between the prop-pressing bars and the cross-shaped railings and the equipment train (on the belt head side) are 1-2 m larger than the planned migration distance of the equipment train, and the included angle between the prop-pressing bars and the ground is 70-80 degrees;
4) Before the equipment train is transferred, firstly removing 3 groups of prop-pressing bars in the middle of the equipment train, then loosening clamping rail car claws, transferring the equipment train to a working surface by 10-20 cm by using a traction winch, stopping the equipment train after wheels of each train leave from a car stopper, tightly holding the clamping rail car claws and the rails, and then removing all the car stoppers and all prop-pressing bars;
5) Firstly loosening a claw of a first rail clamp of a mining equipment train, simultaneously operating an operating handle of the rail clamp, and extending a hydraulic cylinder between the two rail clamps to enable the first rail clamp to be moved into place, and then enabling the claw of the first rail clamp and a rail to be in a clasping state;
6) After the claw of the second rail clamping vehicle of the mining equipment train is released and is communicated with a traction winch driver through signals, the traction winch driver operates a winch to slowly release a steel wire rope, the mining equipment train is slowly moved down a slope, meanwhile, a worker at the rail clamping vehicle operates a rail clamping vehicle operating handle, and a hydraulic jack between the two rail clamping vehicles is contracted; after the hydraulic jacks of the rail clamping vehicle are completely contracted, the hydraulic jacks are communicated with a winch driver through signals, the winch driver stops operating the winch and locks the traction winch, and a worker at the rail clamping vehicle tightly holds the claw of the second rail clamping vehicle with the rail;
7) Repeating steps 5) and 6) until the mining equipment train is migrated to the preset migration position;
8) After the equipment train is transferred, the hydraulic clamping rail car claw of the equipment train is tightly held with the rail, then a car stopper is arranged on the downhill direction of each train pedestrian side wheel of the mining equipment train, and the train is in tight contact with the car stopper, so that the car stopper and the rail are in a tightly held state; 1 group (4) prop-pressing bars are arranged at the first train on the head side of the equipment train belt, cross-shaped railings are arranged, 3 groups (2) prop-pressing bars are respectively arranged at proper positions in the middle of the equipment train, and the effectiveness of preventing the equipment train from running is ensured.
One specific application of this embodiment is:
a certain coal mine fully-mechanized coal mining face has a steep slope with a length S and a descent of 11 DEG under the well 1 =170m; the length of the equipment train is S 2 =120m, total weight about Q 0 =120t. When the equipment train is migrated to the downhill, the method mentioned in the patent description is adopted for migration, and the migration mode and the method are specifically as follows:
(1) Calculating the traction force born by the traction winch:
F 1 ＝m 1 g(sinα+f 1 cosα)+m 2 g(sinα+f 2 cosα)
＝120000×9.8×(sin11°+0.015cos11°)+350×9.8×(sin11°+0.2cos11°)
＝243035.15N≈243KN＜320KN
therefore, a JSDB-19 double-speed multipurpose winch is selected as a prop-returning winch for the transfer of the mining equipment train, and the winch is arranged at the tail part of the mining equipment train near the working face side. According to the sum Q of breaking force of the steel wire rope z Is greater than F 1 A6X 19+FC natural core plain steel wire rope is selected.
(2) Determining the actual use quantity of the steel wire ropes:
according to the calculation result n=3 of the number of the steel wire ropes, 1 fixed pulley and 1 movable pulley are designed and selected, and the fixed pulley is reinforced and fixed at a first upright post of an end support of the fully-mechanized mining face by using a phi 42 thick anchor chain; the movable pulley is additionally fixed on a traction winch of the mining equipment train by using a phi 42 thick anchor chain.
(3) The front of the mining equipment train (belt head side) is provided with 1 group of prop-pressing bars and 1 group of cross-shaped road blocks, the distances between the prop-pressing bars and the cross-shaped road blocks and the equipment train (belt head side) are 1-2 m larger than the planned migration distance of the equipment train, and the included angle between the prop-pressing bars and the ground is 70-80 degrees.
(4) Firstly removing 3 groups of prop-pressing bars in the middle of an equipment train, then loosening clamping rail car claws, transferring the equipment train to a working surface by 10-20 cm by using a traction winch, stopping the equipment train after each train wheel and a car stopper leave, tightly holding the clamping rail car claws and a track, and then removing all the car stoppers and all prop-pressing bars;
(5) The claw of the first rail car of the mining equipment train is loosened, the rail car operating handle is operated at the same time, and the hydraulic jack between the two rail cars is extended, so that the first rail car is moved into place, and then the claw of the first rail car is held tightly with the track.
(6) After the claw of the second rail clamping vehicle of the mining equipment train is released and is communicated with a traction winch driver through signals, the traction winch driver operates a winch to slowly release a steel wire rope, the mining equipment train is slowly moved down a slope, meanwhile, a worker at the rail clamping vehicle operates a rail clamping vehicle operating handle, and a hydraulic jack between the two rail clamping vehicles is contracted. After the hydraulic jack of the rail clamping vehicle is completely contracted, the hydraulic jack is communicated with a winch driver through signals, the winch driver stops operating the winch and locks the winch, and a worker at the rail clamping vehicle tightly holds the claw of the second rail clamping vehicle with the rail.
(7) Repeating the steps (5) and (6) until the mining equipment train is migrated to the preset migration position.
(8) After the equipment train is migrated, the hydraulic clamping rail vehicle claw of the equipment train is tightly held with the rail, and then a car arrester is good in the downhill direction of the pedestrian side wheels of each train of the mining equipment train, so that the train is in tight contact with the car arrester, and the car arrester and the rail are in a tightly held state; 1 group (4) prop-pressing bars are arranged at the first train on the head side of the equipment train belt, cross-shaped railings are arranged, 3 groups (2) prop-pressing bars are respectively arranged at proper positions in the middle of the equipment train, and the effectiveness of preventing the equipment train from running is ensured.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (8)
1. A mining fully-mechanized mining equipment train downslope safety migration method is characterized by comprising the following steps of: the method comprises the following steps:
s1: measuring the length S of a steep-slope section roadway in a downhole field 1 Slope alpha;
s2: summarizing the length S of the underground mining equipment train 2 Weight Q 0 ；
S3: selecting equipment trains and steel wire ropes;
1) Contrasting the roadway length S of the steep slope section 1 Length S of train with mining equipment 2 The minimum value of the equipment train and the steel wire rope is adopted, and the minimum value is the length of the mining equipment train in the steep slope section, and is recorded as S; for the safe migration of the mining equipment train, the invention selectively sets the mining equipment train to be in a steep slope section, namely S=S 2 ；
2) And selecting and checking a traction winch, wherein a calculation formula of the traction force born by the winch is as follows:
F 1 ＝m 1 g(sinα+f 1 cosα)+m 2 g(sinα+f 2 cosα)
wherein F is 1 : rated traction force of traction winch, unit: KN;
m 1 maximum allowable traction mass, unit: kg;
m 2 the mass of the steel wire rope in the maximum traction range of the traction winch is as follows: kg;
alpha is the gradient of the roadway, and the unit is: a degree;
f 1 taking 0.015 for the friction coefficient of the wheels and the track of the mining equipment train;
f 2 the friction coefficient between the steel wire rope and the bottom plate and between the steel wire rope and the carrier roller is 0.15-0.2 when the steel wire rope is supported on the carrier roller, 0.25-0.4 when the steel wire rope is partially supported on the carrier roller, and 0.4-0.6 when the steel wire rope is supported on the floor; taking f 2 ＝0.2；
g is gravity acceleration, 9.8m/s 2 ；
3) According to F 1 The value selection traction winch is arranged at the tail part of the train near the working face side of the mining equipment train, and the traction capacity of the winch is required to be larger than the traction force F born by the winch 1 ；
4) According to F 1 Value selection type steel wire rope and breaking force sum Q of steel wire rope z Is greater than F 1 ；
5) Determining the actual use quantity of the steel wire ropes, wherein the calculation formula is as follows:
wherein 6.5 is a standard safety coefficient;
m is a safety coefficient when a single-strand steel wire rope is used for transferring mining equipment trains;
6) According to the number of the steel wire ropes required to be used in the determined site, a steel wire rope use mode is designed; when n=1, the safety migration of the mining equipment train can be completed by using 1 steel wire rope; when n=2, adding 1 fixed pulley, and adding and fixing the fixed pulley at a first upright post of an end bracket of a fully-mechanized mining face by using a phi 42 thick anchor chain; when n=3, a movable pulley is additionally arranged, and the movable pulley is additionally fixed on the traction winch by using a phi 42 thick anchor chain;
s4: the equipment train starts to be migrated, and the specific operation mode is as follows:
1) Arranging traction winches according to the traction winches confirmed in the step S33 and the arrangement modes of the traction winches, and arranging the use modes of the steel wire ropes according to the number of the confirmed steel wire ropes and the number of pulleys;
2) All staff except train staff for moving mining equipment in a roadway where the clear and reverse steep slope is located;
3) 1 group of prop-pressing bars and 1 group of cross-shaped railings are arranged in front of the mining equipment train, the prop-pressing bars and the distance between the cross-shaped railings and the equipment train are 1-2 m greater than the planned migration distance of the equipment train, and the included angle between the prop-pressing bars and the ground is 70-80 degrees;
4) Before the equipment train is transferred, firstly removing 3 groups of prop-pressing bars in the middle of the equipment train, then loosening clamping rail car claws, transferring the equipment train to a working surface by 10-20 cm by using a traction winch, stopping the equipment train after wheels of each train leave from a car stopper, tightly holding the clamping rail car claws and the rails, and then removing all the car stoppers and all prop-pressing bars;
5) Firstly loosening a claw of a first rail clamp of a mining equipment train, simultaneously operating an operating handle of the rail clamp, and extending a hydraulic cylinder between the two rail clamps to enable the first rail clamp to be moved into place, and then enabling the claw of the first rail clamp and a rail to be in a clasping state;
6) After the claw of the second rail clamping vehicle of the mining equipment train is released and is communicated with a traction winch driver through signals, the traction winch driver operates a winch to slowly release a steel wire rope, the mining equipment train is slowly moved down a slope, meanwhile, a worker at the rail clamping vehicle operates a rail clamping vehicle operating handle, and a hydraulic jack between the two rail clamping vehicles is contracted; after the hydraulic jacks of the rail clamping vehicle are completely contracted, the hydraulic jacks are communicated with a winch driver through signals, the winch driver stops operating the winch and locks the traction winch, and a worker at the rail clamping vehicle tightly holds the claw of the second rail clamping vehicle with the rail;
7) Repeating steps 5) and 6) until the mining equipment train is migrated to the predetermined migration location.
2. The mining fully-mechanized mining equipment train downslope safety migration method of claim 1, wherein S4: the start migration equipment train further comprises the steps of:
8) After the equipment train is transferred, the hydraulic clamping rail car claw of the equipment train is tightly held with the rail, then a car stopper is arranged on the downhill direction of each train pedestrian side wheel of the mining equipment train, and the train is in tight contact with the car stopper, so that the car stopper and the rail are in a tightly held state; and (3) punching 1 group of prop-pressing bars at the first train on the head side of the equipment train belt, punching cross-shaped road wood, and punching 3 groups of prop-pressing bars at proper positions in the middle of the equipment train respectively to ensure that the equipment train is effective in preventing the running of the car.
3. The mining fully-mechanized mining equipment train downslope safety migration method is characterized in that: sum of breaking forces Q of steel wire rope z The sum Q of breaking force of the steel wire ropes of different types is the inherent attribute of the steel wire ropes z Nor are they identical.
4. The mining fully-mechanized mining equipment train downslope safety migration method is characterized in that: the fixed pulley and the movable pulley are the same in model, different in use mode, and the pulley is selected to meet the force requirement and the safety coefficient requirement.
5. The mining fully-mechanized mining equipment train downslope safety migration method is characterized in that: the prop-pressing bars are made of DWX45-150/110 type monomers, 1 group of prop-pressing bars arranged in front of the mining equipment train consists of 4 monomers, and each group of prop-pressing bars arranged in the middle of the mining equipment train consists of 2 monomers.
6. The mining fully-mechanized mining equipment train downslope safety migration method is characterized in that: the mining equipment train rail clamping vehicle consists of a group of two trains, the middle of the two trains are connected by hydraulic jacks, and each train rail clamping vehicle is provided with a claw for tightly holding a rail to prevent a car from sliding.
7. The mining fully-mechanized mining equipment train downslope safety migration method is characterized in that: the car stoppers are arranged on two wheels on the pedestrian side of each train of mining equipment and are respectively arranged in the downhill direction of the wheels.
8. The mining fully-mechanized mining equipment train downslope safety migration method is characterized in that: the end support is 1 frame in total and is composed of 2 groups; wherein each group is divided into two parts connected through a hydraulic balance jack; before the equipment train is transferred, the end support is required to be firmly lifted, so that the end support is in full effective contact with the roadway top plate and the roadway bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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|---|---|
| CN113417693A (en) | 2021-09-21 |
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