CN115352984A

CN115352984A - Inclined shaft rail transportation safety construction method

Info

Publication number: CN115352984A
Application number: CN202211030714.8A
Authority: CN
Inventors: 苏春生; 林金耐; 卫守峰; 赵何明; 周冠南; 付军恩; 乔树勋; 吕春雷; 马天昌; 饶胜斌; 郭建强; 何十美; 黄耀文; 何克; 汤振亚; 何恒; 郑彬; 刘海波; 王东
Original assignee: China Railway Construction Bridge Engineering Bureau Group Co Ltd; Fifth Engineering Co Ltd of China Railway Construction Bridge Engineering Bureau Group Co Ltd
Current assignee: China Railway Construction Bridge Engineering Bureau Group Co Ltd; Fifth Engineering Co Ltd of China Railway Construction Bridge Engineering Bureau Group Co Ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2022-11-18

Abstract

The invention discloses a safe construction method for rail transportation of an inclined shaft, which comprises the following steps: s1: installing a slag discharging lifting system; s2: carrying out winch accessory facility construction; s3: carrying out winch foundation construction; s4: carrying out winch track pavement construction; s5: installing a slag unloading rail platform; s6: installing a winch; s7: carrying out idle load trial operation on the winch; s8: after the winch is qualified in the empty load test operation, carrying out the load operation of the winch; s9: the car stopper capable of preventing the car from continuously running downwards when the hook is taken off is arranged at a place which is longer than 1 skip bucket below the slope changing point on the inclined shaft; s10: reasonably arranging a plurality of overspeed hoisting beams in the inclined shaft; s11: installing a firm vehicle stopping fence at the lower part of the inclined shaft; s12: a safety mechanism is provided for the hoisting winch. The inclined shaft rail transportation safety construction method provided by the invention can meet the requirement of the traction force of the winch, has extremely high safety, ensures the construction period, avoids safety accidents and enables the construction of an inclined shaft tunnel to be smoothly carried out.

Description

Inclined shaft rail transportation safety construction method

Technical Field

The invention relates to the field of tunnel construction equipment, in particular to a safe construction method for inclined shaft rail transportation.

Background

In the process of constructing an underground tunnel, in order to shorten a construction period, a plurality of branch holes are generally constructed around the tunnel, and the work of segmenting and sectioning one tunnel is realized. In the tunnel that ground is darker, its branch hole can face the operation condition that the section is little, the slope is big, consequently must adopt rail transport mode, and lay the track after, transportation such as required material, small-size machines and tools and the slag body in the hole is whole by rail transport, the track in case go wrong, will influence the construction progress and the arrangement of whole tunnel, consequently orbital laying and maintenance are the key that the construction can go on smoothly.

In addition, if the gradient of the tunnel is large, the requirement of the traction equipment (winch) is extremely high, the requirement of safe and stable operation is also required to be met except for meeting the requirement of traction force, and the conditions of vehicle slipping, skidding or insufficient traction force are easily caused if the management is poor and the faults occur frequently, so that the construction is interrupted if the situation is light, the construction period is influenced, and the situation is that the vehicle is damaged and people are killed if the situation is heavy, so that the great safety accident is caused, and therefore the requirement of the safe operation of the traction equipment is extremely high. How to safely and quickly finish rail transportation of an inclined shaft is a technical problem which is faced by all tunnel constructions related to a slope branch hole at present.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a construction method for ensuring the rail transportation safety of an inclined shaft in the tunnel construction process.

In order to achieve the purpose, the invention is realized by the following technical scheme: the rail transportation safety construction method for the inclined shaft comprises the following steps:

s1: installing a slag lifting system;

s2: constructing auxiliary facilities of the winch;

s3: carrying out winch foundation construction;

s4: carrying out winch track pavement construction;

s5: installing a slag unloading rail platform;

s6: installing a winch;

s7: carrying out idle load trial operation on the winch;

s8: after the winch is qualified in the idle load test operation, carrying out the load operation of the winch;

s9: in order to ensure the safety of the transportation process of the inclined shaft, car stoppers capable of preventing a car from continuously running downwards when the hook is picked up are arranged at the positions below the slope changing point of the inclined shaft and longer than 1 skip;

s10: reasonably arranging a plurality of overspeed hoisting beams capable of stopping a vehicle which breaks a rope and is unhooked in the operation process in the inclined shaft;

s11: installing a firm vehicle stopping fence at a place which is longer than 1 skip from a slope starting point at the lower part of the inclined shaft so as to prevent an upper out-of-control vehicle from continuously sliding downwards;

s12: a safety mechanism is provided for the hoisting winch.

In order to better realize the method of the invention, further, the concrete structure of the car arrester in the step S9 comprises a bottom plate, a base is fixed in the middle of the bottom plate, a pin shaft is arranged on the upper portion of the base, a car arrester with an inverted trapezoid cross section is embedded in the pin shaft, an operating rod is further arranged on the upper portion of the bottom plate, a crescent blade matched with the car arrester is mounted at one end of the operating rod, a transmission rod is connected to one end of the operating rod, a pedal is arranged at the free end of the transmission rod, when the pedal is treaded to move downwards, the operating rod can be rotated through the transmission rod, the crescent blade is rotated, the pin shaft of the car arrester on the base is rotated, and clamping plates are further arranged at two ends of the bottom plate.

In order to better implement the method of the present invention, further, in step S10, a specific structure of the overspeed hanging beam is provided with a mounting bracket at the top of the winch channel, and a triggering device which is arranged at the front side of the top of the vehicle channel and movably connected with the mounting bracket, a rotatable striking rod is arranged at the lower part of the mounting bracket, the triggering device includes a collision shaft, the collision shaft is arranged in a clamping groove arranged in the mounting bracket, one side of the collision shaft is connected with a steel wire rope, the steel wire rope is fixedly connected with the front end of the stop frame through a hanging slide fixed at the top wall of the winch channel, the rear end of the stop frame is fixed with a rear anchor steel wire rope, the other end of the rear anchor steel wire rope is fixed at the top wall of the vehicle channel, and the striking rod rotates and strikes the collision shaft out of the clamping groove arranged in the mounting bracket.

In order to better implement the method of the present invention, further, the concrete structure of the barrier in step S11 includes a rack, a gear, a hydraulic lifting rod, a rotating shaft, a fixing plate, a rotating disc, a lifting steel wire, and an intercepting net; the intercepting net comprises at least three steel wires with the interval of 0-0 cm and the diameter of mm, the intercepting net is fixedly connected with the two fixing plates respectively, each lifting steel wire is fixedly connected with the lower part of the intercepting net, and the intercepting net can be pulled up or lowered down by the lifting steel wires.

In order to better implement the method of the present invention, further, the safety mechanism in step S12 specifically includes an over-winding prevention device, an over-speed prevention device, an overload and under-voltage protection device, a slack rope protection device, and a depth indicator failure protection device.

In order to better implement the method of the present invention, further, the construction process of the winch accessory facility in the step 2 specifically includes the following steps:

s21: arranging a winch operation chamber at the position 70m right opposite to the inclined shaft tunnel;

s22: arranging and installing a slag unloading platform on a steel frame between a winch operation chamber and an inclined shaft tunnel;

s23: the method comprises the following steps of (1) paving tracks of a winch on a single-line by adopting 24kg/m steel rails, and arranging the tracks on two sides of the axis of the inclined shaft tunnel, wherein the tracks extend to 10m of the construction working surface of the inclined shaft tunnel through a slag discharging platform;

s24: arranging a ground roller in the middle of the track every 20-25 m, installing a phi 300mm multiplied by 250mm type ground roller at the slope changing point of the inclined shaft tunnel, and installing a phi 130mm multiplied by 300mm type ground roller at the smooth section of the inclined shaft tunnel;

s25: c15 concrete is used for pouring a sidewalk with the width of 0.8m on the left side of the inclined shaft tunnel, a plurality of dodging caves are arranged in the inclined shaft tunnel close to one side of the sidewalk, the distance between every two adjacent dodging caves is not more than 100m, the net width of each dodging cave is 2.0m, the net height of each dodging cave is 2.95m, and the net depth of each dodging cave is 1.5m;

s26: monitoring cameras are arranged inside and outside the inclined shaft tunnel.

In order to better implement the method of the present invention, further, in step S5, the installation process of the slag discharge rail platform includes the following steps:

s51: the measuring personnel loft the center line of the slag unloading track platform according to the center line of the winch drum;

s52: excavating the foundation by adopting a 75-type excavator and a manual matching mode, and cleaning a bottom plate;

s53: c25 concrete is adopted for paving the bottom, the thickness is 25cm, and embedded steel plates are installed when the upright post and the head sheave frame foundation concrete are poured;

s54: when the strength of the foundation concrete reaches 75% of the design strength, continuously pouring the retaining wall concrete, wherein the template adopts a wood mold, and a steel pipe and a square wood as back ribs;

s55: installing the upright posts and the head sheave bracket, firstly machining and molding in a steel framework processing factory, hoisting the upright posts and the head sheave bracket to be in place by a crane, then firmly welding the upright posts and the head sheave bracket, and pouring 40cm of concrete again;

s56: the main beam consists of 4I 40b I-shaped steels, the distance is 50cm, the front section of the main beam is firmly welded with a cross beam above the upright column, a batten plate with the thickness of 1cm is additionally arranged on the side surface of the main beam for reinforcement, the tail end of the main beam is firmly welded with an embedded part, and 30cm concrete is poured for reinforcement again;

s57: and finally, installing I16I-steel distribution beams at intervals of 50cm, enabling the I16I-steel distribution beams to be firmly welded with the main beam, and welding lacing plates at two sides of the I16I-steel distribution beams.

In order to better implement the method of the present invention, further, in step S6, the winch installation includes a mechanical installation and an electrical installation, and the mechanical installation includes the following steps:

s611: lifting the cross center line and the elevation according to the measurement datum point and the elevation datum point, checking the plane size of each basic reserved hole, the deviation of the designed position and the depth of the basic hole, and determining the height of the sizing block;

s612: determining the position of a sizing block, shoveling the position of the sizing block into a plane by using a large shovel, grinding by using the sizing block to ensure that the contact surface of the sizing block and a foundation reaches more than 60%, and flattening by using a horizontal ruler, wherein the sizing block positions are arranged at two sides of a foundation bolt of the foundation and below a main shaft and are close to the foundation bolt as much as possible;

s613: after the construction of the winch house foundation is finished and before a winch house is set up, the main shaft device, the speed reducer and the motor are put in place;

s614: hoisting the main shaft device, the speed reducer and the motor in sequence to realize the installation process of the main shaft device, the speed reducer and the motor;

s615: completing the installation of a disc brake, a depth indicator, a hydraulic station and a lubricating oil station;

the electrical installation comprises the steps of:

s621: installing a master screen, a rotor screen and a power braking power supply cabinet;

s622: installing a high-voltage switch cabinet;

s623: installing a high-voltage commutator;

s624: installing a resistor frame and a resistor configuration;

s625: and finally, completing the installation of the grounding system.

In order to better implement the method of the present invention, further, in step S7, the specific process of performing the winch empty load commissioning includes the following steps:

s71: firstly, a inching test is carried out, after the inching test is successful, the inching test is formally started,

s72: in the lifting process, a lifting mode and a control mode are selected on a signal operation console to be close control, and a driver selects an operation speed according to actual conditions;

s73: before starting, checking whether the high-voltage power supply cabinet, the master, the frequency conversion cabinet, the operation table, the hydraulic station and other indicating instruments are normal;

s74: the signal is displayed in a signal station in an acousto-optic mode, when a signal is sent, the indicated value of a magnetic field ammeter is increased, a hydraulic control handle is pushed to the position with the lowest pressure, a speed handle is pushed forwards, a pressure gauge is observed, after the pressure is stable, the speed gauge, a depth display board, the ammeter indication and the running conditions of a roller and a steel wire rope are observed;

s75: after the signal operator sends a stop point, a driver pulls the speed handle to 0 position and pulls the brake handle to a braking position;

s76: paying attention to observing the running condition of the whole machine, immediately stopping and checking when finding a problem until the whole machine is recovered to normal, and continuing to drive;

s77: the running conditions of the skip bucket and the head sheave, the running condition of the hoisting winch, the working condition of the disc brake and the running condition of electrical equipment of the hoisting machine are comprehensively checked.

In order to better implement the method of the present invention, further, in step S8, the specific process of performing the load operation of the winch includes the following steps:

s81: after the machine is qualified in empty load test, the steel wire ropes and the skip bucket can be hung, the length of each steel wire rope is adjusted, and after relevant marks such as speed reduction, parking and the like are made on the corresponding depth indicating part, the accurate positions of speed reduction, overwinding and speed limiting of the depth indicator are finally determined;

s82: determining marks of deceleration, parking and overwinding points on the steel wire rope and the drum rope baffle plate so as to facilitate the operation and the correct parking of a driver;

s83: carrying out a test run for 8 hours of empty containers, sequentially carrying out a test run for 4 hours of forward and reverse rotation, and comprehensively checking whether residual deformation or other defects exist in each part during a full-load test run; a method for preparing a composite material

S84: the method comprises the steps that whether all parts have abnormal shapes or not, the fastening condition of a connecting part of a steel wire rope and a container and the correct reliability of a safety protection system are comprehensively checked, lubricating oil of a speed reducer is replaced, and trial production and formal production operation are allowed only when the equipment has no problem after load trial run is confirmed;

s85: and adjusting the maximum working oil pressure value and the secondary braking oil pressure value according to the actual using load to test the safe braking deceleration.

Compared with the prior art, the invention has the following advantages and beneficial effects:

(1) The inclined shaft rail transportation safety construction method provided by the invention can meet the requirement of the traction force of the winch, has extremely high safety, avoids the conditions of vehicle slipping, skidding or insufficient traction force, ensures the construction period, avoids safety accidents and enables the construction of an inclined shaft tunnel to be carried out smoothly.

(2) The method provided by the invention solves the technical problems of rail transportation of the existing inclined shaft, improves the practicability and the working capacity of the inclined shaft, is additionally provided with the car arrester, the overspeed hanging beam, the car stopping fence and the sensitive and reliable safety device, ensures the safe operation of the winch, ensures the safety of the skip and maintains the normal production in the inclined shaft, provides favorable support for the construction of the inclined shaft tunnel, and is suitable for wide popularization and application.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a construction layout diagram of an inclined shaft tunnel according to the present invention;

FIG. 2 is a schematic illustration of slag tapping in the construction section of the inclined shaft tunnel according to the invention;

FIG. 3 is a schematic plan view of the slag discharge rail platform of the present invention;

FIG. 4 is a schematic view of the longitudinal section structure of the slag discharge rail platform in the invention;

FIG. 5 is a front view of the car arrester of the present invention;

FIG. 6 is a left side view of the car arrester of the present invention;

fig. 7 is a schematic plan view of the overspeed hanging beam of the present invention;

fig. 8 is a schematic plan view of the car stopper of the present invention.

Wherein: 11-clamping plate, 12-bottom plate, 13-base, 14-pin shaft, 15-car stopping component, 16-pedal, 17-transmission rod, 18-operation rod, 19-crescent blade, 21-installation rack, 22-groove, 23-collision shaft, 24-steel wire rope, 25-hanging slide, 26-blocking frame, 27-beating rod, 28-rear anchor steel wire rope, 31-gear strip, 32-gear, 33-hydraulic pump, 34-rotation shaft, 35-fixing plate, 36-rotation disc, 37-lifting steel wire, 38-blocking net.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, the definitions of "first" and "second" are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly including one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

the main structure of the embodiment is as shown in fig. 1 to 3, and the inclined shaft rail transportation safety construction method is characterized by comprising the following steps:

s1: installing a slag lifting system; respectively installing 1 2JK2.0X 1.5 type double-roller winch and 1 2JK2.5X 2.0 type single-roller winch, and towing the side dump skip (with the volume of 6 m) of the curved rail by the winches ³ ) And (4) laterally dumping the slag to a slag discharging groove, and conveying the slag to a specified slag discarding field in a dump truck parked in the slag discharging groove. The motor power of the 3# construction branch hole double-roller winch is 250KW, and the motor power of the 4# construction branch hole single-roller winch is 280KW;

s2: carrying out winch accessory facility construction;

s3: carrying out winch foundation construction; the specific construction process flow is as follows: paying off → earthwork → foundation cushion → laying foundation cross center line → installing template → pouring concrete → detaching template; excavating the earth of the foundation by adopting a back-shovel excavator matched with a manual pneumatic pick and an iron shovel, and tamping; excavating the stone by blasting; the excavated earthwork is placed at the front side and the rear side of the foundation and is compacted into two concrete unloading platforms, so that the concrete is convenient to pour; aiming at an earthwork foundation with a lower position, the earthwork foundation needs to be tamped after being replaced by gravels, and then a concrete cushion is poured; the template is a wood template which is manufactured in advance according to the requirements of a drawing, steel pipes and square wood are used as back ribs, and phi 16 steel bars are used as pull rods; pouring concrete, namely pouring after the templates and the pull rods are installed and checked to be qualified, wherein the concrete is self-made by a mixing station, transported to the site by a concrete tank truck and poured by a chute or a hopper; pouring in layers, wherein the thickness of each layer is not more than 30cm; the whole time of concrete transportation, pouring and intermittence is not more than the initial setting time of the concrete, the concrete in the same construction section is continuously poured, the upper layer of concrete is poured in the initial setting time of the bottom layer of concrete, and secondary stirring is carried out again if the segregation phenomenon occurs in the transportation process; vibrating concrete: the points are uniformly distributed by adopting the inserted vibrator for vibrating. The tamping degree of the concrete is based on the facts that air bubbles on the surface of the concrete are stopped discharging, the concrete does not sink any more and cement paste appears on the surface of the concrete when the concrete is tamped on site, and a vibrating rod is required to be slowly lifted out after each part is vibrated; the moving distance is not more than 1.5 times of the acting radius of the vibrating rod, and keeps a distance of 5-10 cm with the side die, and the lower layer concrete is inserted for 5-10 cm during vibrating; the construction method of fast inserting and slow pulling is adopted, and the compactness of concrete is strictly ensured. A vibrating worker is provided with an insulating glove and wears insulating shoes during construction operation so as to ensure the safety of the vibrating worker; three vibration pumps are needed to be provided when the construction and pouring are carried out to ensure that the vibration quality is compact and the phenomena of honeycomb and the like do not occur, wherein one vibration pump is reserved; covering with a straw bag after concrete pouring, and watering for curing for 14 days;

s4: carrying out winch track pavement construction; the specific construction process flow is as follows: measuring and lofting → digging bottom plate scum → laying bottom → installing sleepers → laying rails; the specific construction method comprises the following steps: and the measurer performs lofting on the track center line according to the winch roller center line. Cleaning a bottom plate slag body by adopting a 75-type excavator, a slag raking machine and a manual matching mode; after the bottom plate is cleaned up, C25 concrete is adopted for paving the bottom, the thickness is 30cm, 2 phi 25 ground anchors are pre-embedded every 4-5 sleepers according to the distance between the sleepers in the concrete pouring process, and the whole rail is prevented from sliding downwards; the sleepers are injected with oil and are preserved, each sleeper is 150cm long, 22cm wide and 16cm high, and the distance is 50 cm; the track adopts 24kg/m steel rails, the track adopts a single line and is arranged at two sides of the axis of the construction branch hole, the track interval is 600mm, a gauge pull rod is arranged every 6m in the track laying process, a ground roller is arranged every 20m, and the maximum distance is not more than 25m;

s5: installing a slag unloading rail platform;

s6: installing a winch;

s7: carrying out idle load trial operation on the winch;

s8: after the winch is qualified in the empty load test operation, carrying out the load operation of the winch;

s9: in order to ensure the safety of the transportation process of the inclined shaft, car stoppers capable of preventing vehicles from continuously running downwards when the hooks are taken off are arranged at the positions below the slope changing points on the inclined shaft and longer than 1 skip;

s12: a safety mechanism is provided for the hoisting winch.

The inclined shaft excavation adopts manual handheld YT-28 air gun to match with a simple drilling trolley to carry out drilling full-section blasting excavation, wedge-shaped cut, design contour line smooth blasting and manual charging. Deslagging by adopting a crawler type LW-150 rock loading machine and 6m ³ The bend side dump skip is matched and is pulled by a traction winch with an opening 2 JK-2.0X 1.5 (2 JK-2.5X 2.0) (the volume is 6 m) ³ ) And (4) laterally dumping the slag to a slag discharging groove, and conveying the slag to a specified slag discarding field in a dump truck parked in the slag discharging groove.

And (5) timely supporting after excavation. The anchor rod hole is drilled by adopting a self-made simple drilling trolley and a manual handheld YT-28 air drill, a mortar pump performs grouting, a first grouting method is adopted for construction according to the type and the anchoring length of the anchor rod, and grouting and rod inserting work are performed manually. The concrete is sprayed by a wet spraying machine, and the reinforcing mesh is prefabricated in a processing plant. And (4) mixing the concrete sprayed in the holes in a concrete mixing station, and conveying the mixed concrete to a construction site by adopting a rail type concrete mixing and transporting truck. The arch frame is transported outside the tunnel by an 8t truck, then is transported to a supporting working surface in the tunnel through a skip bucket, and is installed by matching a rock loader with manual work.

The corresponding calculation analysis is as follows:

1.1 number of loads per cycle of winch haulage

The effective volume of the skip is 6m ³ If the fill factor is calculated as 90%, then Nc = V/(0.9 Vc) =2.2 × 15 is used as the basis1.6/(0.9 × 6) =9.8, 10 cars are taken, i.e. 10 cars of slag need to be discharged per cycle.

In the formula: v- -amount of slag discharged per cycle

Vc- -the calibrated capacity of each mine car.

1.2 slag tapping time calculation

1.2.1 Each cycle of slag discharge time for branch tunnel construction

From the aforementioned known conditions, it is possible to calculate: average one-way walk time t ₁ =500/2.45/60=3.41min, trailer and shunting time t ₂ And =1min. The time required for one round trip is t ₃ ＝2(t ₁ +t ₂ )＝2×4.41＝8.82min。

The slag charging time of a train is about 8 minutes, the slag discharging time is about 1 minute, and the slag charging and discharging time t4=8+1=9min.

The average time for pulling out a row of slag cars is t ₅ ＝t ₃ +t ₄ =8.82+9=17.82min. If the train is considered as 1 train, the slag tapping task can be completed within 2 hours and 58 minutes after 10 round trips of each train.

1.2.2# construction branch hole slag tapping time per cycle

From the aforementioned known conditions, it can be calculated: average one-way walk time t ₁ =726/2.45/60=4.94min, trailer and shunting time t ₂ And =1min. The time required for one round trip is t ₃ ＝2(t ₁ +t ₂ )＝2×5.94＝11.88min。

The slag charging time of a train is about 8 minutes, the slag discharging time is about 1 minute, and the charging and discharging time t ₄ ＝8+1＝9min。

The average time for pulling out a row of slag cars is t ₅ ＝t ₃ +t ₄ =12+9=21min. If 1 train is considered, the slag tapping task can be completed within 3 hours and 30 minutes after 10 trips of each train.

1.3 construction branch cave equipment model selection calculation

1.3.1 construction branch hole wire rope selection calculation

As required to meet 2016 edition of coal mine safety regulations: the capability of lifting the maximum weight when the safety coefficient of the single-rope winding type lifting device lifts materials is not less than 6.5' is specified to be calculated.

1.3.2 maximum static tension at actual lift

(G+G ₀ )g(sinθ+ωcosθ)+qL _c g(sinθ+ω′cosθ)，kg/m

q-the mass per meter of wire rope (kg/m); l is _c -wire rope length (m); theta-lift tilt angle; g is the lifting load mass (kg) in the concrete transport vehicle; g ₀ -mass of concrete transporter (kg); g-gravitational acceleration m/s ² (ii) a Omega is skip running resistance coefficient, generally, omega = 0.01-0.015 can be adopted, and omega =0.015 is taken; omega '= 0.15-0.2 for the steel wire rope running resistance coefficient, and taking omega' =0.2 when the steel wire rope is supported on the ground roller; g + G in this calculation ₀ ＝3.5m3×2.6kg/m3+6500kg＝15600kg。

Substituting the known data into a formula to calculate:

(9100+6500)×9.8×(sin21.33°+0.015cos21.33°)+2.75×604×9.8×(sin21.33°+0.2×cos21.33°)＝66.7KN

1.3.3 selection of wire ropes

The steel wire rope with the natural fiber core is 6 multiplied by 7 NF, and the technical data is as follows: the diameter d =28mm of the steel wire rope; the mass p per meter of the steel wire rope is =2.75kg/m; total breaking force Q of steel wire rope _q ＝435×1.134＝490.29kN。

m＝7.0>6.5

Q _q -sum of breaking forces of steel wire rope

As the calculated safety coefficient is more than 6.5, the natural fiber core steel wire rope 6 multiplied by 7+ NF steel wire rope meets the use requirement.

1.3.4 Elevator selection

(1) Roller diameter selection

When the diameter of the winch drum is lifted, the diameter of the winch drum is 80 times that of the steel wire rope, and when the winch drum is lifted, the diameter of the winch drum is 60 times that of the steel wire rope. According to the engineering characteristics, only the materials are lifted for use, so that the diameter D of the roller is more than or equal to 60d =60 × 28=1680mm;

according to the calculation result, the standard roller diameter D =2000mm is selected.

(2) Width of the drum

Three friction rings are reserved on the surface of the roller; the test length of the steel wire rope is specified to be once every half year when the steel wire rope is chopped, the steel wire rope is chopped for 5m once, and if the service life of the steel wire rope is calculated in three years, the test length is 30m.

According to the 2016 edition of "coal mine safety code", the fourth hundred and nineteen "the number of layers of steel wire ropes wound on the drum of various lifting devices strictly exceeds the following regulations: 2 layers of lifting personnel or lifting personnel and materials in the branch tunnel are inclined and constructed; lifting the material, 3 layers. The winch is mainly used for lifting materials for main construction branch holes, and the steel wire rope is calculated according to 3 layers.

D _p -average winding diameter, m; k is the number of winding layers; n' -staggered rope loops 2-4 circles;

d is the diameter of the steel wire rope, mm; epsilon, the gap between steel wire rope rings, is generally 2-3,mm;

the width of the roller can be selected to be 1500mm.

(3) Hoist motor preselection

Rope end load: qs = Q (sin 21.33 ° + ω cos21.33 °)

＝15600×(0.383+0.015×0.92)

＝6177.6Kg

Fj＝Qs·g

＝6177.6×10

＝61776N

According to the rotating speed r =740r/min of the 8-pole motor and the reduction ratio of i =31.5,

calculating a lifting speed:

in the formula: d- -diameter of winding drum of hoister in unit of m

Calculating the power of a pre-selected motor: n is a radical of hydrogen

Power reserve coefficient k =1.2; the lifting speed Vm =2.45m/s; for a two-stage transmission, transmission efficiency η =0.85;

therefore, the motor power can be selected to be 250KW.

According to calculation, an YTS355L2-8 type motor is selected, the power P =250KW, the voltage 380V and the rotating speed n =740r/min.

In the formula: k-the motor power reserve coefficient, take 1.2;

eta- -the transmission efficiency of the reducer, 0.96 for the first-stage transmission and 0.85 for the second-stage transmission.

Model selection calculation of the speed reducer:

according to the allowable input power:

PC＝P×K×S＝250×1.5×1.5＝562.5kw

the K- -coefficient of operation in the formula is 1.5

S- -safety factor, 1.5

A table look-up shows that the JC1100-89KN-31.5 reducer can meet the use requirement.

The winch steel wire rope, the hoister and the like meet construction requirements.

1.4 construction branch tunnel equipment model selection

1.4.1 construction branch hole wire rope calculation

The steel wire ropes meet 2016 edition of coal mine safety regulations: the capability of lifting the maximum weight when the safety coefficient of the single-rope winding type lifting device lifts materials is not less than 6.5 is calculated.

1.4.2 maximum static tension at actual lift

(G+G ₀ )g(sinθ+ωcosθ)+qL _c g(sinθ+ω′cosθ)，kg/m

q-the mass per meter of wire rope (kg/m); l is a radical of an alcohol _c -wire rope length (m);

theta-lift tilt angle; g, lifting the load mass (kg) in the concrete transport vehicle;

G ₀ -mass of concrete transporter (kg); g-acceleration of gravity m/s ² ；

Omega-skip running resistance coefficient, which can be generally omega = 0.01-0.015, and omega =0.015;

omega '= 0.15-0.2 for the steel wire rope running resistance coefficient, and taking omega' =0.2 when the steel wire rope is supported on the ground roller;

g + G in this calculation ₀ ＝3.5m ³ ×2.6kg/m ³ +6500kg＝15600kg。

Substituting the known data into a formula to calculate:

(9100+6500)×9.8×(sin26.61+0.015×cos26.61)+3.59×1000×9.8×(sin26.61+0.2×cos26.61)＝96.646KN

1.4.3 selection of wire ropes

The steel wire rope with the natural fiber core is 6 multiplied by 7 NF, and the technical data is as follows: the diameter d =32mm of the steel wire rope; the mass of the steel wire rope per meter is p =3.59kg/m; total breaking force Q of steel wire rope _q ＝568×1.134＝644.112kN。

m＝6.66>6.5

Q _q -total breaking force of steel wire rope

1.4.4 Elevator selection

(1) Roller diameter selection

When the diameter of the winch drum is lifted, the diameter of the winch drum is 80 times that of the steel wire rope, and when the winch drum is lifted, the diameter of the winch drum is 60 times that of the steel wire rope. According to the engineering characteristics, only the materials are lifted for use, so that the diameter D of the roller is more than or equal to 60d =60 multiplied by 32=1920mm;

according to the calculation result, the standard roller diameter D =2500mm is selected.

(2) Width of the drum

Three friction rings are reserved on the surface of the roller; the test length of the steel wire rope is specified to be once every half year for carrying out the test, the steel wire rope is chopped for 5m once, and if the service life of the steel wire rope is calculated by three years, the test length is 30m.

According to the 2016 edition of "coal mine safety code", the fourth hundred and nineteen "the number of layers of steel wire ropes wound on the drum of various lifting devices strictly exceeds the following regulations: 2 layers of lifting personnel or lifting personnel and materials in the inclined construction branch tunnel; lifting and lowering the material by 3 layers. The winch is mainly used for lifting materials for main construction branch holes, and the steel wire rope is calculated according to 3 layers.

d-diameter of the steel wire rope, mm; epsilon, the gap between the steel wire rope rings, is generally 2 to 3,mm;

the width of the roller can be selected to be 2000mm.

(3) Hoist motor preselection

Rope end load: qs = Q (sin 26.61 ° + ω cos26.61 °)

＝15600×(0.448+0.015×0.894)

＝7198Kg

Fj＝Qs·g

＝7198×10

＝71980N

According to the rotating speed r =924r/min of the 8-pole motor and the reduction ratio of i =31.5,

calculating the lifting speed

In the formula: d- -diameter of winding drum of hoister in unit of m

Calculating the power of a preselected motor: n is a radical of hydrogen

Power reserve coefficient k =1.2; the lifting speed Vm =3.07m/s; for a two-stage transmission, transmission efficiency η =0.85;

therefore, the motor power can be selected to be 280KW.

According to calculation, an YTS355L4-8 type motor is selected, the power P =280KW, the voltage 380V and the rotating speed n =924r/min are selected.

In the formula: k-the motor power reserve coefficient, take 1.2;

Model selection calculation of the speed reducer:

according to the allowable input power:

PC＝P×K×S＝280×1.5×1.5＝630kw

k- -coefficient of behavior in the formula is 1.5

S- -safety factor, take 1.5

A table look-up shows that the JC1200-105H-1 reducer can be used satisfactorily.

1.4.5 slag discharge rail platform Calculations

The platform is formed by welding I40b I-steel, the foundation is poured by C25 concrete, the slag discharge track platform is firmly welded with the upright posts by 4I 40b I-steel, and the span of the I-steel is taken as 6.2m for calculation.

1) The stress of the profile steel simply supported beam is calculated as follows:

i-steel allowable bending stress [ sigma ] =235MPa

The I40b I-shaped steel section resisting moment is checked to obtain W =1139cm ³

Calculation of standard value of load

Uniformly distributed load acting on an I-steel beam is (0.36 +0.24+ (3.67 +1.6 × 6)) × 10/6.2=22.37KN/m;

calculating with the safety factor of 1.3

The uniform distribution load acting on the I-shaped steel beam is as follows: 22.37 × 1.3=29.1KN/m

(1) Maximum bending moment across

(2) H-beam stretch bending stress

The bending tensile stress of the I-shaped steel girder meets the requirement.

According to the characteristics of I40b type I-shaped steel, the shearing resistance and the deflection of the I40b type I-shaped steel meet the corresponding stress requirements.

Winch and track maintenance

1) Winch maintenance

(1) The method is characterized in that whether connection parts such as bolts, rivets, pin shafts and the like of all parts are loosened and fall off is often checked, the bolts of a bearing seat and foundation bolts are particularly checked, loosened parts are screwed in time, and fallen parts are timely supplemented;

(2) Regularly checking the gear meshing condition of the reduction gearbox, checking whether the gear has play, whether the abrasion of a tooth part is out of limit, whether cracks, broken teeth and other serious damages exist; whether the oil quantity in the oil tank is enough, whether the oil has deterioration, precipitate and the like;

(3) Checking whether a lubricating oil pump runs normally, whether oil flow at each lubricating part is smooth and sufficient, whether an oil ring rotates, whether oil temperature is normal or not, and if not, timely adjusting and replacing;

(4) Regularly checking whether the work of a brake wheel, a brake disc, a brake shoe, a transmission mechanism, a hydraulic station and the like of a braking system is flexible and normal, whether a gap between the brake block and the brake disc (or the brake wheel) meets the regulation, whether the action of a safety brake is normal, whether a 1/4 surplus stroke of a full stroke is left when a brake is applied by a brake operating handle, whether a counter weight of the brake is padded by foreign objects or not, whether a disc-shaped brake disc spring fails or not, and if not, timely processing and adjusting are required;

(5) The transmission conditions of a lead screw and a nut of the depth indicator are frequently checked, and a deceleration alarm bell and an overwinding protection switch are tested, if the actions are not flexible, the adjustment and the fastening are required in time;

(6) Checking the burning loss condition of the contacts of the contactors such as a master controller, a safety electromagnet contactor, various relays, a signal device and the like, and timely polishing or replacing the contacts;

(7) Checking whether the steel wire rope is wound on the roller neatly or not and whether the rope end is fixed firmly or not, and checking the checking record of wire breakage and abrasion of the steel wire rope;

(8) Checking whether the shaft coupling is loose, deformed and lacking, checking whether the shaft coupling has play, clearance, radial displacement and end face inclination meeting the requirements, and timely replacing a damaged elastic rubber ring and supplementing fasteners such as pins, nuts, washers and the like which fall off;

(9) The equipment is cleaned frequently, the environmental sanitation is cleaned, and the machine is bright and clean.

2) Inclined shaft track maintenance

(1) The inclined shaft track is along the principle of who maintains who works, and the maintenance responsibility must be carefully performed by the construction team to protect the track in the working roadway range.

(2) The inclined shaft rail maintenance is carried out by a wrapping system, a person wrapping the sheet should carefully repair the rail in the sheet regularly, the change condition of the rail is often concerned, and data such as the gauge, the rail surface height difference and the like are ensured to be in a reasonable range.

(3) The track should keep fastener complete, intact, must not smell for a long time not to the scribing track of accomplishing of laying and destroy by malicious even can not demolish the part at will, once find serious punishment.

(4) Safety is required to be paid attention to in the process of using and maintaining the track, and when the track laying and track replacement interrupt transportation, warning boards are arranged at two ends of the track, so that the vehicle is strictly forbidden to run.

(5) The narrow gauge railway should have a patrol inspection system, a post responsibility system, maintenance records and the like. All records should be filled in time, clearly and accurately and kept by a special person.

Example 2:

in this embodiment, based on the above embodiment, the structure of the car arrester is further limited, as shown in fig. 5 and 6, the specific structure of the car arrester in step S9 includes a bottom plate 12, a base 13 is fixed in the middle of the bottom plate 12, a pin 14 is arranged on the upper portion of the base 13, a car arrester 15 with an inverted trapezoidal cross section is inserted into the pin 14, an operating rod 18 is further arranged on the upper portion of the bottom plate 12, a crescent-shaped blade 19 matched with the car arrester 15 is installed at one end of the operating rod 18, a transmission rod 17 is connected to one end of the operating rod 18, a pedal 16 is arranged at a free end of the transmission rod 17, when the pedal 16 is stepped to move downward, the operating rod 18 can be rotated through the transmission rod 17, so that the crescent-shaped blade 19 rotates, and then the car arrester 15 rotates on the pin 14 on the base 13, and the two ends of the bottom plate 12 are also provided with catch plates 11.

When the rail clamp is installed, the bottom plate 12 is placed below a rail, the rail is clamped by the clamping plates 11 on the upper portions of the two ends of the bottom plate 12, and the clamping plates 11 and the bottom plate 12 are fastened and connected together by bolts. When a skip passes through, a worker presses down the pedal 16 with a foot, the crescent blade 19 is driven by the transmission rod 17 and the operating rod 18 to rotate upwards, the vehicle stopping component 15 is supported by the crescent blade 19, the top surface of the vehicle stopping component 15 is in a horizontal position, and the skip can pass through smoothly; after the skip passes, a worker removes the foot from the pedal 16, the car stopping component 15 rotates around the pin shaft 14 under the action of the self gravity, the crescent blade 19 is pressed down, the top surface of the car stopping component 25 is in an inclined position, and the car stopping state is recovered. Other parts of this embodiment are the same as those of the above embodiment, and are not described again here.

Example 3:

in this embodiment, on the basis of the above embodiment, an overspeed hanging beam is further defined, as shown in fig. 7, the specific structure of the overspeed hanging beam in step S10 is set in the mounting bracket 21 at the top of the winch passage, and the triggering device is set at the front side of the top of the vehicle passage and movably connected to the mounting bracket 21, the lower portion of the mounting bracket 21 is provided with a striking rod 27 capable of rotating, the triggering device includes a collision shaft 23, the collision shaft 23 is placed in a clamping groove formed in the mounting bracket 21, one side of the collision shaft 23 is connected to a steel wire rope 24, the steel wire rope 24 is fixedly connected to the front end of a blocking frame 26 through a hanging slide 25 fixed to the top wall of the winch passage, the rear end of the blocking frame 26 is fixed to a rear anchor steel wire rope 28, the other end of the rear anchor steel wire rope 28 is fixed to the top wall of the vehicle passage, and the striking rod 27 rotates and strikes the collision shaft 23 out of the clamping groove formed in the mounting bracket 21.

A striking rod 27 is movably arranged at the lower side of the mounting frame 21, the trigger device is connected with a blocking frame 26, the striking rod 27 is vertical in a static state, the blocking frame 26 is horizontal, and a vehicle running channel is reserved at the lower side of the blocking frame; when the skip is overspeed, the hitting rod is violently hit, the hitting rod 27 quickly hits the hitting shaft 23 after being hit, the hitting shaft 23 is separated from the groove, one end of the blocking frame 26 quickly falls, the other end of the blocking frame is fixed to the top of the tunnel through the steel wire rope 24, and finally the overspeed skip is blocked.

The stopper frame 26 is made of a steel plate, and the hanging slider 25 is a suspended fixed pulley around which the wire rope 24 is wound to fix the stopper frame 26. The triggering device adopts the kinetic energy triggering principle during overspeed, the mounting frame 21 comprises two parallel side plates, the lyric rod is arranged between the two side plates, and the triggering device comprises a rotating shaft, a swinging baffle frame and a steel wire rope traction hanging shaft. Other parts of this embodiment are the same as those of the above embodiment, and are not described again here.

Example 4:

in this embodiment, a specific structure of the car stopper is further defined on the basis of the above embodiment, and as shown in fig. 8, the specific structure of the car stopper in step S11 includes a rack 31, a gear 32, a hydraulic lifting rod 33, a rotating shaft 34, a fixing plate 35, a rotating disc 36, a lifting wire 37, and an intercepting net 38; one end of the rotating shaft 34 is fixed on the side wall of the winch channel through a rotating bearing, the other end of the rotating shaft is provided with a gear 32, the gear 32 is meshed with the gear strip 31, the lower portion of the gear strip 31 is provided with a hydraulic lifting rod 33, two rotating discs 36 with intervals are fixed in the middle of the rotating shaft 34, the lower portions of the rotating discs 36 are fixedly connected with at least one lifting steel wire 37, two fixing plates 35 are fixed on the upper portion of the winch channel through concrete, the intercepting net 38 is composed of at least three steel wires with the intervals of 30-40 cm and the diameter of 32mm, the connecting section of the intercepting net 38 is fixedly connected with the two fixing plates 35 respectively, each lifting steel wire 37 is fixedly connected with the lower portion of the intercepting net 38, and the lifting steel wires 37 can pull up or lower down the intercepting net.

The height of the interception net 38 should be more than 1.5m, and the height of the lower end thereof to the ground is equal to or less than 0.5 m. When a skip passes through the device, an instruction is sent by lifting a winch house to monitor the skip stroke, so that the hydraulic lifting rod 33 runs, the hydraulic lifting rod 33 rises to push the gear strip 31 to drive the gear 32 to work, the rotating shaft 34 rotates, the rotating disc 36 contracts the lifting steel wire 37, the intercepting net 38 continuously rises, and the skip smoothly passes through the device. When the skip passes through the device, the instruction of the hydraulic lifting rod 33 is finished, and the device obtains signals according to the number of meters of the rotating speed of the winch and the length of the skip, so that the computer sends an instruction again, the hydraulic lifting rod 33 descends, the gear strip 31 and the gear 32 rotate, the rotating shaft 34 drives the rotating disc 36 to put down the lifting steel wire 37, and the crosspiece of the intercepting net 38 is in the center of the inclined shaft, so that the intercepting effect on the skip is realized. Other parts of this embodiment are the same as those of the above embodiment, and are not described again here.

Example 5:

in this embodiment, on the basis of the above embodiments, the composition of the safety mechanism is further defined, and the safety mechanism in step S12 specifically includes an overwinding prevention device, an overspeed prevention device, an overload and undervoltage protection device, a slack rope protection device, and a depth indicator failure protection device.

Overwinding prevention device: when the lifting winch exceeds the normal terminal stop position (or unloading platform) by 0.5m, the power must be automatically cut off, and a safety brake can be enabled, otherwise, the overwinding accident can be caused. When the double-roller lifting winch is lifted, one hook is overwound, and the other hook is overwound. The consequences of such safety accidents are that the head sheave is damaged, the derrick is pulled down, the steel wire rope is broken, the lifting winch falls, equipment at the bottom of a sports car or an inclined shaft is damaged, and casualties are caused in severe cases, so that the serious and serious lifting accident is realized.

The overspeed preventing device comprises: during the lifting process of the lifting winch, the speed exceeds the normal speed, the lifting accident is likely to happen, after overspeed, the momentum of a lifting system is increased due to the high speed, normal parking or accident parking of the system is more difficult, the required working braking torque and the emergency braking torque exceed the designed values, and the possibility of accidents is expanded. Meanwhile, after overspeed, the hoisting winch is easily out of control, accidents occur, over-winding, over-unwinding and other accidents are easily caused, and damages to a hoisting motor, a speed reducer and the like can also occur. Therefore, the coal mine safety regulation stipulates that when the lifting speed exceeds 15 percent of the maximum speed, the power can be automatically cut off, and a safety brake can play a role.

Overload and undervoltage protection: the operation of the hoist motor above the rated load moment is an overload operation. The main cause of overload is skip overload or skip jamming. Overload operation can make motor current exceed rated current, causes motor and electrical equipment serious damage, still makes the lifting wire rope atress increase, and factor of safety reduces, probably leads to the accident, influences the promotion safety. With a micro-towing device, the towing phase may also lead to difficulty in towing, and even inversion.

When the voltage of a power supply of a motor of the hoisting winch is lower than the rated voltage, the torque of the motor is greatly reduced, the torque of the motor is reduced in proportion to the square of the voltage, the rotating speed of the motor is reduced, the slip ratio is increased, the stator current and the rotor current are increased, the efficiency and the power factor are reduced, and meanwhile, the heating value of the motor is increased, the motor or electrical equipment can be damaged, and serious accidents are caused.

Rope loosening protection device: when the steel wire rope of the winding type hoisting winch is loosened, the automatic alarming or automatic power-off can be realized: after time delay, the safety loop acts to realize safety braking.

For a winding type hoisting winch, when the operation speeds of a skip and the hoisting winch are inconsistent due to the blockage of the skip and the like, a hoisting steel wire rope may be loosened and twisted with the steel wire rope, when the steel wire rope is loosened to a certain degree, if the skip falls suddenly, the steel wire rope can be broken under the action of huge impact, and a serious accident that the skip falls into a well may be caused.

Depth indicator failsafe: in the lifting process of the lifting winch, the depth indicator can monitor the relative position of the skip in the inclined shaft, sends deceleration and overwinding signals, performs overspeed speed-limiting protection, and is additionally provided with a backup protection device. If the depth indicator does not rotate due to faults such as shaft breakage, pin release and the like in the process of transporting the lifting winch, the lifting winch cannot perform speed reduction, speed limit and overspeed protection according to a set stroke, so that the safety protection device fails, severe overwinding accidents occur, and equipment damage or casualties are caused.

Other parts of this embodiment are the same as those of the above embodiment, and are not described again here.

Example 6:

on the basis of the above embodiment, the present embodiment further defines the winch accessory facility construction process in step 2, as shown in fig. 1 and fig. 2, specifically including the following steps:

s21: arranging a winch operation chamber at a position 70m opposite to the inclined shaft tunnel;

s23: the method comprises the following steps that 24kg/m steel rails are adopted, tracks of a winch are laid through a single line and are arranged on two sides of the axis of the inclined shaft tunnel, and the tracks extend to 10m of the construction working face of the inclined shaft tunnel through a slag discharging platform;

s25: c15 concrete is used for pouring a sidewalk with the width of 0.8m on the left side of the inclined shaft tunnel, a plurality of shelter tunnels are arranged in the inclined shaft tunnel close to one side of the sidewalk, the distance between every two adjacent shelter tunnels is not more than 100m, the clear width of each shelter tunnel is 2.0m, the clear height of each shelter tunnel is 2.95m, and the depth of each shelter tunnel is 1.5m;

The layout of a winch operation chamber → the layout of a slag discharging platform → the layout of a track → the layout of a land wheel → the construction of a sidewalk → the layout of a monitoring system.

1) Operating room arrangement

In order to meet the requirements of track arrangement and slag discharging platform arrangement for simple and convenient operation of the mine winch, the winch operating chamber is arranged at a position which is about 70m away from the construction branch tunnel portal and is opposite to the construction branch tunnel portal.

2) Arrangement of slag discharge platform

The winch unloads slag in a bent rail side unloading mode, and the slag unloading platform is arranged on the steel frame between the operation room and the construction branch hole.

3) Track arrangement

The track of the winch adopts 24kg/m steel rails, the track adopts a single line and is arranged at two sides of the axis of the construction branch hole, the distance between the tracks is 600mm, and the track extends to the position which is about 10m away from the construction working surface in the hole through the slag discharging platform.

The rail sleeper selects a wooden sleeper according to actual construction conditions, the foundation below the sleeper is poured by C25 concrete, the thickness of the sleeper is 30cm, the distance between sleepers is 50cm, and the rail is firmly fixed and is connected with the rail flatly by adopting a spike.

4) Ground roller arrangement

Ground rolls are arranged in the middle of the track and are arranged according to 20 m/according to the gradient of an inclined shaft tunnel, construction requirements and the like, the maximum length of the ground rolls is not more than 25m, and the ground roll specifications are 300mm multiplied by 250mm and 130mm multiplied by 300mm, wherein the model of 300mm multiplied by 250mm is used for a variable slope point, and the model of 130mm multiplied by 300mm is used for a smooth section.

5) Tunnel-supporting sidewalk arrangement

And the sidewalk in the construction branch tunnel is arranged on the left side of the construction branch tunnel, the width of the sidewalk is 0.8m, and the sidewalk is cast by C15 cast-in-place concrete. In order to ensure the safety of construction operators, one side of the construction branch tunnel, which is close to the sidewalk, is provided with the shelter tunnels, the distance between 2 shelter tunnels is not more than 100m, the section of each shelter tunnel is of a gate opening type, the net width is 2.0m, the net height is 2.95m, and the depth is 1.5m.

6) Monitoring system arrangement

In order to ensure that an operator can control the running condition of the side-dumping mine car in the whole process, monitoring cameras are planned to be arranged in and out of the hole.

Example 7:

in this embodiment, based on the above embodiment, the installation process of the slag discharging rail platform in step S5 is further limited, as shown in fig. 3 and 4, and the installation process includes the following steps:

The process flow comprises the following steps:

measuring and laying out → foundation excavation → cushion layer pouring → retaining wall pouring → upright post and head frame installation → girder and distributive girder installation.

The specific construction method comprises the following steps:

and the measurer performs lofting on the center line of the slag unloading track platform according to the center line of the winch drum. Excavating a foundation by adopting a 75-type excavator and a manual matching mode; and after the bottom plate is cleaned up, C25 concrete is adopted for paving the bottom, the thickness is 25cm, and the embedded steel plates are installed when the concrete of the upright columns and the head sheave frame foundation is poured.

And when the strength of the foundation concrete reaches 75% of the designed strength, continuously pouring the retaining wall concrete, wherein the template adopts a wood mold, a steel pipe and square wood as back ribs. When the upright columns (I40 b I-shaped steel) and the head sheave frame (composed of double-spliced I16I-shaped steel, the cross bars and the inclined bars) are installed, after the upright columns and the head sheave frame are machined and formed in a steel frame processing factory, the steel frame is hoisted in place by a crane, then the steel frame is firmly welded, and 40cm concrete is poured again.

The main beam is composed of 4I 40b I-beams, the distance is 50cm, the front section is firmly welded with the beam above the upright column (the side face is additionally provided with a 1cm thick batten plate for reinforcement), the tail end is firmly welded with the embedded part, and 30cm concrete is poured for reinforcement again. And finally, installing I16I-steel distribution beams at a distance of 50cm, so that the I16I-steel distribution beams are firmly welded with the main beam, and welding batten plates at two sides of the I16I-steel distribution beams.

Example 8:

the present embodiment further defines that in step S6, the winch installation includes a mechanical installation and an electrical installation, and the mechanical installation includes the following steps:

s611: lifting the cross center line and the elevation according to the measuring datum point and the elevation datum point, checking the plane size of each basic reserved hole, the deviation of the designed position and the depth of the basic hole, and determining the height of the sizing block;

the electrical installation comprises the steps of:

s621: installing a master screen, a rotor screen and a dynamic braking power supply cabinet;

s622: installing a high-voltage switch cabinet;

s623: installing a high-voltage commutator;

s624: installing a resistor frame and a resistor configuration;

s625: and finally, completing the installation of the grounding system.

Construction procedure

1) Mechanical installation:

(main shaft device, speed reducer and motor) → speed reducer installation → main motor installation → disc brake installation → depth indicator installation → hydraulic station installation → other machinery, oil pipeline arrangement installation → test run.

2) Electric installation: positioning basic channel steel → installing a rotor screen, a main screen and a power braking power supply cabinet → installing a high-voltage switch cabinet → installing a high-voltage commutator → installing an operation console → installing a resistor frame and configuring resistors → laying cables and pressing wires → installing a grounding device.

Construction method and steps

General requirements for parts before installation of the apparatus

(1) Before all parts are assembled, dirt such as oil stain, coal ash and the like must be cleaned; and coated with a clean lubricant. When cleaning the hydraulic system components, the components must be cleaned by clean cotton cloth without using cotton yarn;

(2) The mating surfaces and friction surfaces of the components are not susceptible to corrosion and damage. If corrosion and damage occur, the product can be repaired by a proper method under the condition of not influencing the service performance;

(3) The lubricating oil path and oil pipe of each part of the equipment must be cleaned and unblocked. During assembly, high-pressure air is used for blowing and washing, dirt is removed, hammering and the like are not allowed, and phenomena of dent, kneading and folding, flattening, cracking and the like are not allowed;

(4) When the special parts or parts with certain relative positions are assembled and disassembled, marks are marked on the non-contact surface of the parts which are easy to see, so that the parts are convenient to install.

Mechanical part

(1) Measurement paying-off and basic inspection acceptance

And (3) lifting the central line and the elevation of the cross according to the measuring datum point and the elevation datum point, checking the plane size of each basic reserved hole, the deviation of the designed position and the depth of the basic hole, and determining the height of the sizing block, wherein the deviation of the central position of the basic hole is +/-10 mm, the deviation of the depth is 0 to +20mm, the verticality is +/-10 mm, the longitudinal and transverse positions of the foundation are +/-20 mm, and the elevation of the foundation is-20 to 0mm.

(2) Shovel foundation and arrangement sizing block

Firstly, determining the position of the sizing block, shoveling the position of the sizing block into a plane by a large shovel, grinding by the sizing block to ensure that the contact surface of the sizing block and a foundation reaches more than 60 percent, and leveling by a horizontal ruler.

The sizing blocks are arranged on two sides of the foundation anchor bolt and below the main shaft and are close to the anchor bolt as much as possible.

(3) With the large part in place

After construction of the winch house foundation is finished and before a winch house is set up, large equipment (a main shaft device, a speed reducer and a motor) is required to be in place.

(4) Spindle device mounting

The main shaft device is hoisted and installed by an 80t crane, and the rope sling of the hoisting roller is 2 (4 strands) 18 multiplied by 7-phi 28-1770 steel wire ropes. The speed reducer adopts 2 (4 strands) rope sleeves of 18 multiplied by 7-phi 28-1770, particularly a hoisting roller, the hoisting height is reduced as much as possible, and the hoisting is slow when the trial hoisting is carried out. The hoisting in-place sequence is as follows: spindle device installation → reducer installation → motor installation.

(5) Speed reducer installation

According to the elevation of a drawing and actual measurement, a sizing block is prepared, a speed reducer is dropped by a crane, the position and the elevation of the speed reducer are determined according to the elevation of a main shaft end coupling and a transverse central line, and a jack and the sizing block are used for roughly leveling and aligning. And measuring the end face clearance, concentricity and inclination of the coupler and the large shaft axis levelness, and leveling and aligning the speed reducer according to the quality standard until the quality standard is reached.

Before the gears are checked to be engaged, the inside of the reduction box and the gear device are cleaned, then the engagement condition of the gears of each shaft is checked, and the contact area of the engagement of the gears and the gaps between the tooth tops and the tooth sides are checked by a coloring method and a lead pressing method and recorded.

And covering the reduction box, and adding lubricating oil.

(6) Main motor installation

a. The power of a single main motor is 280KW (250 KW), the tile seat structure is matched with a bearing, and the alignment is carried out by taking the paired wheels of the speed reducer as a reference.

b. The method comprises the steps of aligning a polyurethane rod pin coupler at the end of a speed reducer to enable the end face gap, concentricity and inclination of the coupler to meet the quality standard requirements, leveling and aligning a main motor by using a jack, a crowbar, a sledge hammer and other tools, and then screwing down a foundation bolt.

(7) Disc brake mounting

a. Determining the elevation of the basic surface of each group of disc type brakes according to the elevation (actually measured) of a main shaft device, arranging a sizing block, drawing an elevation datum line on a brake disc by using a level gauge, hanging a line weight on a shaft neck, then installing the disc type brakes, adjusting the disc type brakes by using a sledge hammer, a triangular gin pole and an inclined sizing block to ensure that the coincidence ratio of the central lines of an upper oil cylinder and a lower oil cylinder and the central line of a main shaft is not more than 3 mm, ensuring that the distance between two brake plates on two sides of the friction radius of a brake shoe is equal to or more than the designed friction radius and the brake disc is equal, and then fastening bolts.

b. And cleaning and then assembling the dust outside the disc type brake, the inner oil cylinder, the disc spring, the sealing ring and the like one by one, installing the flashboard, and adjusting the gap between the tile and the brake disc to be between 1mm and 1.5 mm.

c. In the test run, the contact area of the brake shoe and the brake disc is checked, the contact degree is not less than 60%, and the contact points are uniformly distributed.

(8) Depth indicator mounting

The depth indicator mainly functions as: (1) indicating a position of the riser in the wellbore; (2) sending signals of deceleration, overwinding parking and the like; (3) and carrying out speed limit protection. Determining the elevation of a shim iron of the depth indicator according to the elevation of the spindle device, leveling and aligning the depth indicator by using a triangular gin pole, and keeping a transmission shaft of the depth indicator horizontal and well meshing a gear; the pointer stroke should be more than 2/3 of the total length of the scale, the transmission device should be flexible and reliable, and the pointer must not collide with the scale when moving; when assembling the screw, the straightness of the screw should be checked, and the straightness should not be greater than 1mm over the entire length.

(9) Hydraulic station installation

Before installation, an oil pump valve body, an internal oil pipe and an oil tank are cleaned, cotton yarn trial wiping is strictly forbidden, engine oil is coated on the cleaned oil for assembly, an external pipe is cleaned by dilute hydrochloric acid (30 percent) and then is cleaned by lime water, a hydraulic station is leveled and aligned, and a hydraulic system is subjected to hydraulic pressure test.

(10) Installation of lubricating oil station

The pre-installation alignment system comprises: the oil pump, the valve bodies, the oil filter and the pipeline are cleaned, the central elevation of an oil suction port of the oil pump is-80 mm lower than the oil outlet of the speed reducer, the oil pump is adjusted, noise and vibration are reduced, and then pipe distribution is carried out, and the oil pump is matched with the pipeline of the hydraulic station reasonably, is horizontal, vertical, attractive and reasonable.

Electrical part

(1) Installation of master screen, rotor screen and power braking power supply cabinet

a. Firstly, paving basic channel steel at the installation position of the low-voltage distribution panel, and checking the iron level to keep the basic channel steel horizontal, wherein the basic channel steel is reliably grounded, and the upper surface of the basic channel steel is preferably 10-20 mm higher than the floating ground.

b. Before the main screen, the rotor screen and the power braking power cabinet are installed, whether each electrical appliance element is defective or not is checked, whether the wiring number is complete or not is correct, if the drawing is not completely checked and timely supplemented, the flatness of the top of two adjacent disc surfaces installed on the distribution panel is not more than 6 mm and is not more than 1mm, the inter-disc gap is not more than 2mm, and the verticality is not more than 2 per thousand.

(2) High-voltage switch cabinet installation

a. The method for laying the basic channel steel is the same as the above.

b. Before the high-voltage switch cabinet is installed, whether cracks and defects exist on the surface of the porcelain insulator or not, whether the bus is complete or not, whether the operation action and the switching point are correct and clear or not are checked, and the installation method and the standard are the same as those of the high-voltage switch cabinet.

(3) High voltage commutator installation

a. The foundation channel steel is laid and installed stably, and the channel is fastened by the horizontal and vertical connecting bolts.

b. Before the high-voltage commutator is installed, the surface condition of a porcelain piece is checked, an arc extinguishing cover has no cracks or damages, the connection of a primary connection wire of a high-voltage contactor with a bus and a cable is fastened and reliable, and the surface of a main contact of the commutator is clean and smooth and contacts tightly.

(4) Resistor rack mounting and resistor configuration

a. The foundation channel steel is laid on the same way.

b. The resistor frame is installed horizontally and vertically and firmly, the resistor is required to be checked before installation to see whether a ceramic part of the metal resistor box has cracks or not and whether a resistor disc has a fracture phenomenon or not. After the resistors are configured, the actual measurement and inspection of the resistors of each phase are carried out, and the inspection result meets the following requirements:

(5) Cable laying, secondary wiring

a. Before installation, the high-voltage cable is subjected to direct-current voltage resistance and leakage tests according to regulations. Laying high-voltage, low-voltage and control cables according to the design, wherein the cable pressing nose and the high-voltage cable terminal (cable head manufacturing) which are more than 16 mm & lt 2 & gt need to be carried out according to the quality requirement, namely: the sealing is tight, the filling is full, no bubble exists, and the terminal wiring is firm and reliable. The control cable is required to be provided with a control cable head.

b. The secondary wiring must accord with the design circuit, the connection is reliable, the number head plate is complete, the mark is correct and clear.

(6) Grounding system installation

The specifications, materials and corrosion resistance of the grounding body and the grounding wire meet the design requirements, the length of the grounding body and the grounding wire is more than 2 times of the width of the grounding body when the grounding body and the grounding wire are lap-welded, and the sectional area of the grounding trunk flat steel is not less than 100 mm ² And the thickness of the branch line is not less than 48 mm ² The grounding branch line connected to the electric equipment and the non-electrified metal component is required to be directly connected with the trunk line, and a plurality of electric equipment needing grounding are strictly prevented from being connected in series and grounded.

Example 9:

in this embodiment, on the basis of the above embodiment, it is further defined that in step S7, the specific process of performing the empty load commissioning of the winch includes the following steps:

s71: firstly, the inching test is carried out, after the inching test is successful, the inching test is formally started,

Preparation for commissioning

(1) The mechanical manufacturer and the electric control manufacturer are responsible for field guiding operation and debugging programs: empty running, rope running and loaded running.

(2) The personnel who participate in debugging need to be familiar with the drawings in advance so as to be beneficial to mastering the design requirements.

(3) Random technical documents, specifications and the like are carefully studied to facilitate the implementation of debugging requirements.

(4) The quality standard and the technical specification of relevant debugging in the mine electromechanical equipment engineering installation and acceptance standard and the mechanical equipment installation engineering construction and acceptance universal standard issued by the nation are carefully studied.

(5) The preparation work of tools and instruments used for debugging is well done, and the instruments are required to be available after being verified to be qualified.

(6) Various quality reports and recording tables required by test run are prepared, and original data synchronization is achieved.

(7) The post responsibility system is implemented, and each post needs to be inspected by a full-time person so as to find out problems, record, report and process the problems in time, and the special work type needs to be certified and put on post.

(8) Before test operation, all project sub-projects must be debugged to be qualified.

Test run requirements, content and inspection items

(1) Require that

a. Before commissioning, systems such as braking, steering, lubrication and the like need to be checked.

b. Various protection devices such as overwinding, speed reduction, speed limit and the like are tested and corrected.

c. And checking the installation condition of all bolt fasteners and magnetic switches of the shaft once.

d. All the electrical test results are qualified.

e. The electrical equipment cabinet should be cleaned up.

f. The speed is gradually increased by starting the engine at a low speed firstly. When there is no problem in multiple runs at the same speed level, the speed level is raised to full speed.

g. When the system has no problem, the system can perform no-load test operation of the empty container. The test run time was 8 hours in succession (4 hours for each of forward and reverse runs).

(2) Content of commissioning

The inching test is firstly carried out for a plurality of times, and the starting is formally carried out after no problem exists. When the hoisting winch is lifted in a no-load mode, the operation conditions of the skip bucket and the head sheave, the operation conditions of the hoisting winch, the working condition of the disc brake, the operation condition of electrical equipment of the hoisting machine and the like are comprehensively checked.

(3) Commissioning inspection item

a. The lubricating system is smooth, the oil pressure, the oil quantity and the oil temperature are kept within the specified range, and no abnormal phenomenon occurs;

b. the oil pump, valve, pipeline and all the joints of the accessories of the hydraulic system must not leak oil.

c. The action of the valves, mechanisms and the like of the ventilation and cooling system is correct, flexible and reliable. The working medium supply of each system must not be interrupted or leaked during operation, and the specified quantity, pressure and temperature are maintained.

d. In operation, the actions of the operation, interlocking and braking devices are sensitive, correct and reliable. The braking and limiting device does not generate large vibration during braking or limiting.

e. After the secondary wiring construction is finished, checking again and verifying the connection condition of each core wire;

f. the control, protection, signal system operating procedures and locking relationships conform to the specifications of the technical documentation.

g. All parts operate normally, and the main bearing cannot leak oil.

h. The contact area of each brake shoe is more than 60% of the whole area of the brake shoe.

The pasting and grinding method comprises the following steps:

before the paste is ground, the brake disc is soaked and washed by hot soap water; predicting the oil pressure value when the brake lining is stuck; the thickness of each brake shoe (lining plate) is pasted and ground; starting the machine to carry out the grinding operation, wherein the grinding positive pressure is not too large generally, and is slightly lower than the oil pressure in the process of adhering the brake shoe by 0.2-0.4 MPa (2-4 kgf/cm) ² ) And at any time, the brake disc temperature is kept at no more than 80 c (preferably measured with a point thermometer) to avoid damaging the brake disc surface roughness. And stopping the pasting and grinding when the temperature is over-high, and then running after cooling. And (4) operating intermittently in sequence, detaching the brake shoe, checking the contact area, and if the brake shoe reaches the requirement, adjusting the brake shoe gap according to the regulation of 1mm.

In order to prevent the brake disc from being worn out with grooves, the surface condition of the brake disc should be observed at any time in the sticking and grinding process, if metal particles are found to be attached to the brake disc, the brake disc must be removed in time and the brake disc should be correspondingly removed and inspected, and if the metal particles are found to be embedded into the brake disc, the metal particles should be removed completely. In this way, the brake shoe is ground to a specified contact area, so that the damage degree of the brake disc can not be reduced in the normal operation in the future, otherwise, metal particles on the brake disc are embedded into the brake shoe to further cause the brake shoe to wear the brake disc, the worn brake disc further wears the brake shoe to cause vicious circle, and both the situation of damage are required to be strictly paid attention to in installation and debugging.

i. The action of the safety valve is timely and accurate, and the action of the brake is sensitive.

j. The emergency braking time must not exceed 0.3 seconds.

k. The main components are not deformed.

The bearing lubrication condition is good, and the maximum temperature of the bearings of the main shaft device and the head sheave device is not more than 20 ℃; when the speed reducer runs idle, the speed reducer runs stably without periodic impact sound, and the temperature rise of oil temperature does not exceed 25 ℃;

and m, checking whether the head sheave runs stably, whether abnormal noise exists or not and whether bearing lubrication is good or not.

And n, the overwinding protection device is reliable in action.

And o, debugging the hydraulic station brake and the pipeline according to the standard.

p, each control button, the action is accurate, the operation is flexible.

q, attention current, voltage change, sound, light and other signals indicate whether the signals are correct or not.

And r, checking whether the foundation bolts are loosened or not.

And s, continuously running at full speed, and completely checking the abnormal shape of each part and removing the abnormal noise of each part after each 4 hours in the forward and reverse directions, wherein if the speed reducer is found to have abnormal noise, the cover should be uncovered for checking.

(4) Operation procedure

a. In the lifting process, a lifting mode (automatic, manual and maintenance) needs to be selected on a signal operation table, a control mode is close control, and a driver selects an operation speed according to actual conditions.

b. Before starting, checking whether the high-voltage power supply cabinet, the master, the frequency conversion cabinet, the operation table, the hydraulic station and other indicating instruments are normal. c. The signal is displayed in the signal station by sound and light (0, 2, 3, 4 and 5 respectively represent parking, fast up, fast down, slow up and slow down), after the signal is triggered, the indicated value of the magnetic field ammeter is increased, the hydraulic control handle is pushed to the lowest pressure position (the automatic position control handle is in the zero position), the speed handle is pushed forward, the pressure gauge is observed, and after the pressure is stable, the speed gauge, the depth display panel, the ammeter indication and the running conditions of the roller and the steel wire rope are observed.

d. When the operator signals the stop point, the driver pulls the speed lever to 0, and at the same time pulls the brake lever to the braking position (except when the brake is automatic).

e. And (4) paying attention to observing the running condition of the whole machine, immediately stopping and checking when the problem is found, and continuing to drive the vehicle to run until the vehicle is recovered to be normal (the problem is eliminated).

Example 10:

in this embodiment, on the basis of the above embodiment, it is further defined that in step S8, the specific process of performing the load operation of the winch includes the following steps:

s83: carrying out a test run for 8 hours of empty containers, then sequentially carrying out a test run for 4 hours of forward and reverse rotation, and comprehensively checking whether residual deformation or other defects exist in each part during a full-load test run; \ A

(1) After the machine is qualified in empty load test, the steel wire ropes and the skip bucket can be hung, the length of each steel wire rope is adjusted, and meanwhile, after relevant marks such as speed reduction, parking and the like are made on the corresponding depth indicating part, the correct positions of the depth indicator such as speed reduction, overwinding, speed limiting and the like are finally determined.

(2) The marks of deceleration, stop and overwinding points on the steel wire rope and the drum rope baffle are determined so as to facilitate the driver to operate and stop correctly.

(3) Test run

a. Testing the empty container: the time is 8 hours, and the parts are carefully examined for any abnormality.

b. Loading and trial run: the load should be increased step by step, generally divided into three stages: 1/4F, l/2F and 3/4F (F is the difference of the maximum net pulling force of the product actually used). The running time of each stage of load is respectively 4 hours in forward and reverse rotation, after the load is loaded to an F load test run, the tooth surface contact condition of the speed reducer is checked, if the requirement is met, the full load test run can be carried out, the working oil pressure is correspondingly adjusted during the full load test run, and whether residual deformation or other defects exist in each part or not is comprehensively checked during the full load test run. When carrying out load test at all levels, working oil pressure is correspondingly adjusted, and the following items are emphatically checked in full load test:

1) The adjustability of the work brake can meet the use requirements.

2) The deceleration of the safety brake should meet the specified requirements.

3) Reliability of the electromechanical interlocks.

4) The temperature rise of the bearings of the speed reducer is not higher than 35 ℃, the maximum temperature is 70 ℃ and the oil temperature rise of the hydraulic station is realized.

(4) Parking inspection: the method is characterized in that whether all parts have abnormal shapes or not, the fastening condition of the joint of the steel wire rope and the container and the correct reliability of a safety protection system are checked comprehensively, lubricating oil of the speed reducer is replaced, and trial production and formal production operation are allowed only when the equipment has no problem after load trial run is confirmed.

(5) The testing of the safe braking deceleration is carried out according to the maximum working oil pressure value and the secondary braking oil pressure value which are adjusted to the required actual using load, and the requirements of the regulations are met.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The inclined shaft rail transportation safety construction method is characterized by comprising the following steps:

s1: installing a slag lifting system;

s2: carrying out winch accessory facility construction;

s3: carrying out winch foundation construction;

s4: carrying out winch track pavement construction;

s5: installing a slag unloading rail platform;

s6: installing a winch;

s7: carrying out idle load trial operation on the winch;

s12: a safety mechanism is provided for the hoisting winch.

2. The inclined shaft rail transportation safety construction method according to claim 1, wherein the concrete structure of the car arrester in the step S9 includes a bottom plate (12), a base (13) is fixed in the middle of the bottom plate (12), a pin shaft (14) is arranged on the upper portion of the base (13), a car arrester assembly (15) with an inverted trapezoid cross section is inserted into the pin shaft (14), an operating rod (18) is further arranged on the upper portion of the bottom plate (12), a crescent-shaped blade (19) matched with the car arrester assembly (15) is installed at one end of the operating rod (18), a transmission rod (17) is connected to one end of the operating rod (18), a pedal (16) is arranged at the free end of the transmission rod (17), when the pedal (16) is stepped to move downwards, the operating rod (18) can be rotated through the transmission rod (17), so that the crescent-shaped blade (19) rotates, the car arrester assembly (15) rotates on the pin shaft (14) on the base (13), and clamping plates (11) are further arranged at two ends of the bottom plate (12).

3. The inclined shaft rail transportation safety construction method according to claim 1 or 2, wherein in the step S10, the concrete structure of the overspeed hanging beam is arranged on a mounting frame (21) at the top of the winch channel, and a trigger device is arranged on the front side of the top of the vehicle channel and movably connected with the mounting frame (21), a rotatable hitting rod (27) is arranged on the lower portion of the mounting frame (21), the trigger device comprises a collision shaft (23), the collision shaft (23) is arranged in a clamping groove formed in the mounting frame (21), one side of the collision shaft (23) is connected with a steel wire rope (24), the steel wire rope (24) is fixedly connected with the front end of a blocking frame (26) through a hanging slide (25) fixed on the top wall of the winch channel, a rear anchor steel wire rope (28) is fixed on the rear end of the blocking frame (26), the other end of the rear anchor steel wire rope (28) is fixed on the top wall of the vehicle channel, and the hitting rod (27) rotates and hits the collision shaft (23) out of the clamping groove formed in the mounting frame (21).

4. The inclined shaft rail transportation safety construction method according to claim 1 or 2, wherein the concrete structure of the vehicle stopping fence in the step S11 comprises a gear rack (31), a gear (32), a hydraulic lifting rod (33), a rotating shaft (34), a fixing plate (35), a rotating disc (36), a lifting steel wire (37) and an intercepting net (38); one end of the rotating shaft (34) is fixed on the side wall of the winch channel through a rotating bearing, a gear (32) is installed at the other end of the rotating shaft, the gear (32) is meshed with the gear strip (31), the lower portion of the gear strip (31) is provided with a hydraulic lifting rod (33), the middle of the rotating shaft (34) is fixedly provided with two rotating discs (36) with intervals, the lower portion of each rotating disc (36) is fixedly connected with at least one lifting steel wire (37), the two fixing plates (35) are fixed on the upper portion of the winch channel through concrete, the intercepting net (38) is composed of at least three steel wires with the intervals of 30 to 40cm and the diameter of 32mm, the connecting sections of the intercepting net (38) are fixedly connected with the two fixing plates (35) respectively, each lifting steel wire (37) is fixedly connected with the lower portion of the intercepting net (38), and the lifting steel wires (37) can pull up or lower the intercepting net.

5. The inclined shaft rail transportation safety construction method according to claim 1 or 2, wherein the safety mechanism in the step S12 specifically comprises an overwinding prevention device, an overspeed prevention device, an overload and undervoltage protection device, a slack rope protection device and a depth indicator failure protection device.

6. The inclined shaft rail transportation safety construction method according to claim 1 or 2, wherein the winch-attached facility construction process in the step 2 specifically comprises the following steps:

s22: arranging and installing a slag unloading platform on a steel frame between a winch operation room and an inclined shaft tunnel;

s24: arranging a ground roll at every 20 to 25m in the middle of the track, installing a ground roll with the diameter of 300mm multiplied by 250mm at the slope changing point of the inclined shaft tunnel, and installing a ground roll with the diameter of 130mm multiplied by 300mm at the smooth section of the inclined shaft tunnel;

7. The inclined shaft rail transportation safety construction method according to claim 1 or 2, wherein in the step S5, the installation process of the slag discharging rail platform comprises the following steps:

s53: c25 concrete is adopted for paving the bottom, the thickness is 25cm, and embedded steel plates are installed when the upright post and the crane frame foundation concrete are poured;

s55: installing the upright posts and the head sheave frame, firstly processing and molding in a steel framework processing factory, hoisting the steel framework in place by a crane, firmly welding the steel framework, and pouring 40cm of concrete again;

8. The inclined shaft rail transportation safety construction method according to claim 1 or 2, wherein in the step S6, the winch installation comprises a mechanical installation and an electrical installation, and the mechanical installation comprises the following steps:

the electrical installation comprises the steps of:

s622: installing a high-voltage switch cabinet;

s623: installing a high-voltage commutator;

s624: installing a resistor frame and a resistor configuration;

s625: and finally, completing the installation of the grounding system.

9. The inclined shaft rail transportation safety construction method according to claim 1 or 2, wherein in the step S7, the concrete process of performing the winch no-load test operation comprises the following steps:

s72: in the lifting process, a lifting mode and a control mode are selected on a signal operation panel to be close control, and a driver selects an operation speed according to actual conditions;

s74: the signal is displayed in a signal station in an acousto-optic mode, when a signal is sent out, the indicated value of a magnetic field ammeter is increased, a hydraulic control handle is pushed to the position with the lowest pressure, a speed handle is pushed forwards, a pressure gauge is observed, and after the pressure is stable, the running conditions of the speed gauge, a depth display plate, the ammeter and a roller and a steel wire rope are observed;

s75: when the signal operator sends a stop point, a driver pulls the speed handle to 0 position and pulls the brake handle to a braking position;

s76: paying attention to observing the running condition of the whole machine, immediately stopping and checking when a problem is found, and continuing driving to run until the problem is recovered to be normal;

10. The inclined shaft rail transportation safety construction method according to claim 1 or 2, wherein the specific process of carrying out the load operation of the winch in the step S8 comprises the following steps:

s83: carrying out a test run for 8 hours of empty containers, sequentially carrying out a test run for 4 hours of forward and reverse rotation, and comprehensively checking whether residual deformation or other defects exist in each part during a full-load test run;