Coal mine production department to develop tunneling winch transportation management standard security technology
(1) General provisions
1, small winch transportation must be "three good, four have, two implementation." Three good: the winch equipment is intact, the roadway support is good, the track quality is good; four: there are car stop, ground roll, evasive squat, sound and light signals; two implementation: post responsibility system implementation, maintenance system implementation.
2. The selection of winch should be based on the slope, transportation distance, maximum load and lifting mode of the construction roadway. The model of the winch and the wire rope are matched by calculation, and approved by the relevant personnel of the Mine Electromechanical Department or the Transportation Department. It can be installed and used at the rear.
3, the use of small winches must be written into the operating procedures, the site must have a post responsibility system, operating procedures and other management cards.
4. In principle, the small winch should be managed by anyone. If it is necessary to use the winch managed by the external unit due to special circumstances, it must contact the unit and obtain the consent before use, and follow the relevant regulations of the winch.
(2) Installation of small winch
1. Any unit that needs to install and use the winch should submit a written application in advance, and attach the construction drawing of the roadway (the figure should be marked with the winch chamber or the installation position of the winch) to the Electrical and Mechanical Department for relevant procedures. After the installation is completed, the mechanical and electrical organization will meet the technical requirements and send a certificate to the small winch. No certificate is allowed to be put into operation.
2. In the plane cross roadway, the small winch must be installed in the winch chamber, and the design of the winch chamber and the winch position must appear on the roadway construction drawing.
3. For the use of JD25 and above winches, the concrete foundation fixed winch must be used; the anchor bolt length should be 1.5m and the diameter is 24mm Round Steel; the basic size is not less than 1.5m × l.5m × l.5m (length × width ×High), at the same time, two stable ropes must be added at the end of the winch, and the steady rope must be tightened tightly.
4. The installation requirements of the JDl1.4 winch shall depend on the lithology of the top and bottom of the roadway:
(1) For the roadway where the bottom plate is hard sandstone , 8 resin anchors and two rear ropes are used to stabilize the winch (except for the first winch after the head is retracted). The anchor rod is a Rebar with a length of 1.8m and a diameter of 18mm. The resin powder roll is not less than 2 rolls per hole, and the rear stable rope should be firm and reliable.
(2) The winch can be installed in the roadway where the bottom plate is medium hard sandy shale , but the ground anchor must pass the tensile test, and the anchoring force of each anchor can reach 2.5t before it can be put into use. If the force is less than 2.5t, the four winches should be added to stabilize the winch.
(3) For long-term use of permanent winch and bottom plate for soft rock and coal roadway, the winch foundation can be used to stabilize the winch. The anchor bolt has a length of 0.8m and a diameter of 18mm. The base size is 1.2m×1.2m×1.2m (length×width×height). The winch can also be stabilized by pressing the column and fixing the ground anchor at the same time. The pressure column and the ground anchor are not less than 4, the bottom of the pressure column must be on the base frame of the small winch, the top must be hit on the roof of the roadway, and it is firm and reliable, and the wooden wedge can only be used at most. The first two columns should have a forward inclination of 60 ° ~ 80 ° support, the depth of the ground anchor should not be less than lm, the pressure column uses φ> 18Omm high quality pine logs. Concrete foundations must be used for roadways where the roof is broken or the roof cannot be pressed.
5. The installation position of the small winch must meet the following requirements:
(1) The support of the diverticulum or winch position shall comply with the support standard of the roadway. The height shall not be less than 1.8m. The driver shall have an effective space of not less than 1m2 and shall be able to accommodate all electrical equipment.
(2) The distance between the most prominent part of the winch and the roadway shall not be less than 250mm, and the distance from the car frame shall not be less than 400mm.
(3) There must be no water, water and debris in the diverticulum and winch, and the surrounding area is clean and hygienic.
(3) Operation of the small winch
1. The driver must hold the certificate and strictly carry out the operation process, so that the “four does not openâ€, that is, the equipment is not in good condition, the wire rope does not meet the requirements of the regulations and the broken wire does not open; the safety facilities and signals are not complete; The trailer does not open; the signal is not clear.
2, the hook work should be strictly in accordance with the operating procedures, to achieve "four does not hang", that is: the safety facilities are not complete without hanging; the signal can not be linked; the number of cars does not meet the requirements do not hang; the track does not hang.
3. The hook head of the winch and the mine car must be connected by special bolts. It is not allowed to use wooden sticks or round irons . Check the hook head, bolts and safety ropes before the hook machine sends a signal to confirm that the connection is correct. The signal is driving.
3, winch transportation is strictly prohibited hooks, brakes, strict implementation of driving is not pedestrians, pedestrians do not drive system; pedestrians inclined lanes must be hoisted at all personnel exits eye-catching signs, set up to raise the police lights bell; the middle should be set red For the daylight signal, the signal spacing can be seen at any position in the roadway; the main track of the construction should be set at a height of 25m, and the width, depth and height should not be less than 1.2m, 0.7m and 1.8m respectively. It is strictly forbidden to accumulate debris in the shackles.
4. The inclined lane transportation must be set above the inclined lane. The length of the platform should not be less than 3 times of the length of the mining truck. It is strictly forbidden to park the truck on the slope when picking up the mine car.
5. The upper and lower yards of the inclined lane transportation must be equipped with signal diverting chambers. The sound and light signals must be complete and reliable. The signal device must be on the plate and hung on the lane. Before the winch starts, the driver must give a driving signal in advance.
6. The center of the lifting winch roller should coincide with the center line of the track, so that the wire ropes are arranged neatly, do not bite the rope, do not pick the rope, and the tail of the wire rope is firmly and reliably on the winch drum.
7. On the sidewalk side of the pedestrian winding road, the mine car should be no less than 0.8m, the non-sidewalk side should be no less than 0.4m, and the sidewalk side of the roadway with a dip angle greater than 20° should be set.
8. For the oblique lane transportation, the car stop should be installed above the upper and lower slope points of the upper slope point; a horn block should be set at the upper lm of the upper slope point, and a chain blocker should be installed below the upper slope point. . Downhill construction, a normally closed vehicle blocking device must be installed at 10m after the loading point, and it will move with the advancement of the excavation. The car stop is normally closed and can only be opened when passing the car.
9. The hook of the winch must be equipped with a safety rope that is compatible with the length of the lift truck. When the trailer is hooked, the safety rope is firmly connected.
10. When the inclined roadway with slope less than 6° is transported, the upper slope point must be set to ground roll. For roadways larger than 6°, the ground roll should be installed in other places except the slope point. The spacing is not to grind the track and the road wood. Prevail. The ground roll should be fixed and flexible.
11. For two-way traction in the laneway transportation, the winch chamber should be opened in the lane, the vertical axis of the winch angle should be set, and the two-way guide wheel should be installed in the center of the track.
12. The winch must meet the perfect standard. The brake and the retaining rope are complete and reliable. The rope connecting hook must use the retaining rope ring. The rope card must be no less than 4.
13. The track should meet the track quality standards.
(4) Inspection and maintenance
1. Each unit that uses a small winch must establish and improve the following system and bind it into a book.
(1) Small winch operating procedures (including the number of loads of various items, one lifting number).
(2) Small winch tour inspection, overhaul, maintenance system.
(3) Small winch driver, signal, and hook job responsibility system.
2. Any unit that uses a small winch must carefully fill in and save the following records.
(1) Inspection, inspection and maintenance records.
(2) Wire rope inspection and replacement records.
(3) Electrical and mechanical fault records.
3, the winch in use should meet the good standards, the track meets the track quality standards, and the equipment, electrical, signal, safety devices, ground rolling, and track bed should be kept in good condition, and the winch and other diseases should not be allowed to run.
4. The small winch should be inspected regularly, with a minor repair every month and an overhaul every year.
5, wire rope every day to set up a special person responsible for inspection, and fill in the records, found problems in a timely report.
6. The wire rope in use has a broken wire area of ​​10%, a rope diameter of 10%, serious corrosion, loose outer wire rope, etc., which must be replaced immediately.
(5) Training and certification
1, on the standard post, dry standard live. The winch driver, the signal, and the hook work must be specially trained. After the test is passed, the certificate is issued and the certificate is issued. The examination and examination shall be conducted every year. For those who fail to revoke the certificate, they shall not be employed.
2. Small winch transport personnel should regularly carry out off-production or amateur training according to the relevant regulations of superiors, and continuously improve the professional quality of transport personnel.
3. The training and assessment work of drivers, signal workers and hook workers shall be organized by the relevant units of the mine. The examination results shall be recorded according to the type of work and copied to the Electrical and Mechanical Department for record. According to the test results, the mechanical and electrical department is qualified to issue a special type of certificate.
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