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About "Ten Not Hanging" in the Use of Tower Crane

  • Categories:Industry news
  • Author:
  • Origin:
  • Time of issue:2020-05-05 08:12
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(Summary description)  Tower cranes are widely used as vertical transportation machinery in construction operations, and have become indispensable construction machinery in construction. As a large-scale construction machine, the analysis has the following characteristics from a safety perspective: 1. It usually has a huge structure and a relatively complicated mechanism, which can complete one lifting movement, one or several horizontal movements.   2. There are many kinds of heavy loads, and the load is variable.   3. It needs to be operated directly in a large range, and the activity space is large.   4. There are many exposed and moving parts, and often come in direct contact with lifting operators (such as hooks, wire ropes, etc.), which has many potential risk factors.   5. Complex operating environment.   6. It is often necessary for multiple people to cooperate to complete an operation.   The existence of many of the above-mentioned risk factors determines that there are many accidents of lifting injuries, and once an accident occurs on the tower crane, not only the property loss but also the personal injury most of the time, the impact is greater, so it has been classified as special equipment management. The manufacturing, installation, use, and maintenance of the company have issued relevant specifications and regulations. The relevant departments or units have summarized the "ten no lifting" regulations for lifting operations as long as they adhere to this "ten no lifting" "In principle, tower crane accidents can be avoided to the greatest extent. However, in the actual production, there is no scientific, specific and practical version of the "ten-no-hang", and there are no special provisions in the relevant specifications of the tower crane. This article attempts to analyze and summarize the various versions of our site and various specifications of tower cranes, and on this basis, put forward specific regulations on the "ten do not hang" tower cranes for your reference.   Now lists the relevant "ten not hang" circulated in our place as follows:   1. The tower crane "Ten No Cranes" in the book "Safety Management System for Construction Sites" issued by Chengdu Safety Supervision and Management Station:   1. Someone staying or walking under the boom and lifting heavy objects is not allowed to hang.   2. The hoisting command should be performed by full-time personnel qualified in technical training. No command or unclear signal is not allowed to hoist.   3. Slender materials and multiple objects such as steel bars, steel bars, pipes, etc. must be tied firmly, and the single-headed "kilogram" or untied strapping is not allowed to hang.   4. Perforated plates, hoppers, and hand-pull dump trucks do not require four-point or large template plug-in plates, and are not allowed to hang when unloading armor cranes. Prefabricated reinforced concrete floor slabs are not allowed to be double-slung.   5. Hanging blocks must use safe and reliable block fixtures. Hanging bricks must use brick cages and be neatly stacked. Wooden bricks, embedded parts and other sporadic objects should be stably stacked with containers.   6. Floor, girders and other hanging objects are not allowed to hang.   7. Sheet piles, well point pipes, etc. buried in the ground, as well as sticking and adhering objects are not allowed to hang.   8. Multi-machine operation should ensure that the distance of lifting heavy objects is not less than 3m. When operating on multiple machines on the same track, it is not allowed to hang without safety measures.   9. Strong winds above level 6 are not allowed to hang.   10. Hanging heavy objects or exceeding mechanical allowable load is not allowed to hang.   The first of the above, "Someone stays or walks under the boom is not allowed to hang". This is definitely unavoidable in the construction site, because when the crane crane rotates, it almost covers the entire site, under the boom. There must be someone who stays or walks; "there is a person who stays or walks under the suspended heavy object and is not allowed to hang" is already contradictory. If it has already been lifted, it is required that it is not allowed to be hung, so this is meaningless. In the fourth article, the hopper is probably a special hopper that is equipped with the tower crane. This must be lifted at four points, but the hand-overturned hopper truck is afraid that it is forbidden to be used for lifting materials, so this article should also be modified; the rest of the articles are only It illustrates some particularities, not completely.   Second, the tower crane "Ten No Cranes" in "Migrant Workers Night School Reader" from Chengdu Safety Supervision and Management Station   1. Overload and oblique pulling are not allowed to hang.   2. The bulk goods are too full or the strapping is not allowed to hang.   3. No command, disorderly command and unclear command signal.   4. The edge of the hanging object is sharp and ther

About "Ten Not Hanging" in the Use of Tower Crane

(Summary description)  Tower cranes are widely used as vertical transportation machinery in construction operations, and have become indispensable construction machinery in construction. As a large-scale construction machine, the analysis has the following characteristics from a safety perspective: 1. It usually has a huge structure and a relatively complicated mechanism, which can complete one lifting movement, one or several horizontal movements.

  2. There are many kinds of heavy loads, and the load is variable.

  3. It needs to be operated directly in a large range, and the activity space is large.

  4. There are many exposed and moving parts, and often come in direct contact with lifting operators (such as hooks, wire ropes, etc.), which has many potential risk factors.

  5. Complex operating environment.

  6. It is often necessary for multiple people to cooperate to complete an operation.

  The existence of many of the above-mentioned risk factors determines that there are many accidents of lifting injuries, and once an accident occurs on the tower crane, not only the property loss but also the personal injury most of the time, the impact is greater, so it has been classified as special equipment management. The manufacturing, installation, use, and maintenance of the company have issued relevant specifications and regulations. The relevant departments or units have summarized the "ten no lifting" regulations for lifting operations as long as they adhere to this "ten no lifting" "In principle, tower crane accidents can be avoided to the greatest extent. However, in the actual production, there is no scientific, specific and practical version of the "ten-no-hang", and there are no special provisions in the relevant specifications of the tower crane. This article attempts to analyze and summarize the various versions of our site and various specifications of tower cranes, and on this basis, put forward specific regulations on the "ten do not hang" tower cranes for your reference.

  Now lists the relevant "ten not hang" circulated in our place as follows:

  1. The tower crane "Ten No Cranes" in the book "Safety Management System for Construction Sites" issued by Chengdu Safety Supervision and Management Station:

  1. Someone staying or walking under the boom and lifting heavy objects is not allowed to hang.

  2. The hoisting command should be performed by full-time personnel qualified in technical training. No command or unclear signal is not allowed to hoist.

  3. Slender materials and multiple objects such as steel bars, steel bars, pipes, etc. must be tied firmly, and the single-headed "kilogram" or untied strapping is not allowed to hang.

  4. Perforated plates, hoppers, and hand-pull dump trucks do not require four-point or large template plug-in plates, and are not allowed to hang when unloading armor cranes. Prefabricated reinforced concrete floor slabs are not allowed to be double-slung.

  5. Hanging blocks must use safe and reliable block fixtures. Hanging bricks must use brick cages and be neatly stacked. Wooden bricks, embedded parts and other sporadic objects should be stably stacked with containers.

  6. Floor, girders and other hanging objects are not allowed to hang.

  7. Sheet piles, well point pipes, etc. buried in the ground, as well as sticking and adhering objects are not allowed to hang.

  8. Multi-machine operation should ensure that the distance of lifting heavy objects is not less than 3m. When operating on multiple machines on the same track, it is not allowed to hang without safety measures.

  9. Strong winds above level 6 are not allowed to hang.

  10. Hanging heavy objects or exceeding mechanical allowable load is not allowed to hang.

  The first of the above, "Someone stays or walks under the boom is not allowed to hang". This is definitely unavoidable in the construction site, because when the crane crane rotates, it almost covers the entire site, under the boom. There must be someone who stays or walks; "there is a person who stays or walks under the suspended heavy object and is not allowed to hang" is already contradictory. If it has already been lifted, it is required that it is not allowed to be hung, so this is meaningless. In the fourth article, the hopper is probably a special hopper that is equipped with the tower crane. This must be lifted at four points, but the hand-overturned hopper truck is afraid that it is forbidden to be used for lifting materials, so this article should also be modified; the rest of the articles are only It illustrates some particularities, not completely.

  Second, the tower crane "Ten No Cranes" in "Migrant Workers Night School Reader" from Chengdu Safety Supervision and Management Station

  1. Overload and oblique pulling are not allowed to hang.

  2. The bulk goods are too full or the strapping is not allowed to hang.

  3. No command, disorderly command and unclear command signal.

  4. The edge of the hanging object is sharp and ther

  • Categories:Industry news
  • Author:
  • Origin:
  • Time of issue:2020-05-05 08:12
  • Views:
Information

  Tower cranes are widely used as vertical transportation machinery in construction operations, and have become indispensable construction machinery in construction. As a large construction machine, the analysis from a safety perspective has the following characteristics:    

  1. Usually has a huge structure and a relatively complicated mechanism, can complete a lifting movement, one or several horizontal movements.

  2. There are many kinds of heavy loads, and the load is variable.

  3. It needs to be operated directly in a large range, and the activity space is large.

  4. There are many exposed and moving parts, and often come in direct contact with lifting operators (such as hooks, wire ropes, etc.), which has many potential risk factors.

  5. Complex operating environment.

  6. It is often necessary for multiple people to cooperate to complete an operation.

  The existence of many of the above-mentioned risk factors determines that there are many accidents of lifting injuries, and once an accident occurs on the tower crane, not only the property loss but also the personal injury most of the time, the impact is greater, so it has been classified as special equipment management. The manufacturing, installation, use, and maintenance of the company have issued relevant specifications and regulations. The relevant departments or units have summarized the "ten no lifting" regulations for lifting operations as long as they adhere to this "ten no lifting" "In principle, tower crane accidents can be avoided to the greatest extent. However, in the actual production, there is no scientific, specific and practical version of the "ten-no-hang", and there are no special provisions in the relevant specifications of the tower crane. This article attempts to analyze and summarize the various versions of our site and various specifications of tower cranes, and on this basis, put forward specific regulations on the "ten do not hang" tower cranes for your reference.

  Now lists the relevant "ten not hang" circulated in our place as follows:

  1. The tower crane "Ten No Cranes" in the book "Safety Management System for Construction Sites" issued by Chengdu Safety Supervision and Management Station:

  1. Someone staying or walking under the boom and lifting heavy objects is not allowed to hang.

  2. The hoisting command should be performed by full-time personnel qualified in technical training. No command or unclear signal is not allowed to hoist.

  3. Slender materials and multiple objects such as steel bars, steel bars, pipes, etc. must be tied firmly, and the single-headed "kilogram" or untied strapping is not allowed to hang.

  4. Perforated plates, hoppers, and hand-pull dump trucks do not require four-point or large template plug-in plates, and are not allowed to hang when unloading armor cranes. Prefabricated reinforced concrete floor slabs are not allowed to be double-slung.

  5. Hanging blocks must use safe and reliable block fixtures. Hanging bricks must use brick cages and be neatly stacked. Wooden bricks, embedded parts and other sporadic objects should be stably stacked with containers.

  6. Floor, girders and other hanging objects are not allowed to hang.

  7. Sheet piles, well point pipes, etc. buried in the ground, as well as sticking and adhering objects are not allowed to hang.

  8. Multi-machine operation should ensure that the distance of lifting heavy objects is not less than 3m. When operating on multiple machines on the same track, it is not allowed to hang without safety measures.

  9. Strong winds above level 6 are not allowed to hang.

  10. Hanging heavy objects or exceeding mechanical allowable load is not allowed to hang.

  The first of the above, "Someone stays or walks under the boom is not allowed to hang". This is definitely unavoidable in the construction site, because when the crane crane rotates, it almost covers the entire site, under the boom. There must be someone who stays or walks; "there is a person who stays or walks under the suspended heavy object and is not allowed to hang" is already contradictory. If it has already been lifted, it is required that it is not allowed to be hung, so this is meaningless. In the fourth article, the hopper is probably a special hopper that is equipped with the tower crane. This must be lifted at four points, but the hand-overturned hopper truck is afraid that it is forbidden to be used for lifting materials, so this article should also be modified; the rest of the articles are only It illustrates some particularities, not completely.

  Second, the tower crane "Ten No Cranes" in "Migrant Workers Night School Reader" from Chengdu Safety Supervision and Management Station

  1. Overload and oblique pulling are not allowed to hang.

  2. The bulk goods are too full or the strapping is not allowed to hang.

  3. No command, disorderly command and unclear command signal.

  4. The edge of the hanging object is sharp and there are no protective measures to prevent it from hanging.

  5. People who stand on hanging objects and pile sporadic objects do not hang.

  6. Components buried underground are not allowed to be hung.

  7. The safety device is not allowed to hang if it fails.

  8. Do not hang hanging objects in fog or dark light.

  9. Under the high-voltage line or too close to the high-voltage line is not allowed to hang.

  10. Strong winds above level 6 are not suspended.

  There is no requirement for small objects such as bricks, stirrups, etc. The foggy weather in Article 8 and Article 10 belong to the same type of "bad weather", so they need to be supplemented and improved.

  Third, the tower crane "Ten No Cranes" in the training textbook "Safety Management System for Construction Sites" issued by Sichuan Safety Production Administration:

  1. Overload does not hang.

  2. The command signal is unknown, the light is unknown, and the weight is unknown.

  3. Slings and accessories are not tied tightly and do not meet the safety requirements.

  4. Tilt and hang it obliquely, do not hang objects buried underground.

  5. The safety device is not working.

  6. Close the high-voltage line without reliable safety measures and do not hang.

  7. People who stand on the object or have moving items on it are not allowed to hang.

  8. Combustible and explosive products are not suspended.

  9. Angular fast-mouthed objects are not hanged if they are not properly cushioned.

  10. Illegal use, and do not hang in violation of command

  In the above, there is no requirement for small objects. For bad weather, only the first article says "Unknown light", which is not perfect. The "flammable and explosive products" in Article 8 are more general, such as the wood in the construction site. Fang, foam, etc. are all flammable and explosive products, it must be hung, and there are oxygen and acetylene bottles in the main construction of the two or thirty floors. This article is also debatable. The article "Usage in violation of regulations" in Article 10 is more general, and it does not mean that it is used in violation of regulations, so this article is put together.

  Fourth, "Do not hoist" (or prohibited operation items) in the corresponding specifications of the tower crane:

  1. Article 4.4.40 of "Safety Technical Operation Regulations for the Use of Construction Machinery" (JGJ33-2001) requires that the operation should be stopped immediately in case of strong winds or gusts of level 6 and above;

  2. The requirements of Article 3.1.10 in "Operation and Operation Regulations of Tower Crane" (JT/T100-1999): the driver shall not operate the crane if one of the following conditions occurs in the operation,

  (1), the command signal is unclear; (2), the command that will cause an accident; (3), the command that does not meet the performance of the crane.

  3. Article 3.1.11, there are two or more commanders in the operation, and only one commander can send out a signal to operate. Anyone who has two or more commanders simultaneously sends out signals shall not operate.

  4. Article 5.2.1: The driver must be familiar with the performance of the crane being operated, and should operate in strict accordance with the instructions in the manual, and must not obliquely pull, obliquely pull heavy objects, lift the buried underground or stick to the ground, the weight of the equipment Objects and heavy objects of unknown weight.

  5. Article 5.2.6: Drivers shall not operate cranes with ineffective safety devices, missing or inaccurate.

  6. Article 5.2.8: It is not allowed to overload or overwind the crane.

  7. Article 5.2.13: It is forbidden to lift heavy objects with people, and it is forbidden to lift people by crane.

  8. Article 5.2.16: The operation should be stopped in the following situations: (1), bad weather, such as heavy rain, strong wind, heavy fog, operation that exceeds the allowable working wind, etc. that affects safety; (2), the crane has electricity leakage; (3), the steel wire rope is seriously worn, twisted, broken strands, knotted or grooved; (4), the safety protection device fails; (5), the transmission mechanism has abnormal phenomena and abnormal noise; (6), the metal structure part occurs Deformation; (7), the crane has other failures that hinder the operation and affect safety.

  According to the above, Article 1 refers to bad weather; Articles 2 and 3 refer to the direction of command signals; Article 4 refers to the aspect of lifting; Article 5 refers to the aspect of safety devices; Article 6 refers to the aspect of It refers to the lifting capacity and weather; Article 7 refers to the prohibition of carrying people; the first item of Article 8 refers to the weather, and the following items refer to the safety devices.

  Fifth, based on the above analysis, put forward the "ten not hanging" summarized by the author:

  1. Crooked and slanted heavy objects are not suspended.

  2. The rated load of the super crane is not hoisted.

  3. Heavy objects buried in the ground or adhering to the ground, equipment and unknown weights are not suspended.

  4. No command, unauthorized command and unclear command signal.

  5. Small items are not packed in a hanging cage (blue) or flat, and are not hung beyond the edge of the hanging basket.

  6. People who stand on the hoisting objects or have moving items are not hoisted.

  7. The lifting objects and accessories are not tied tightly or the binding does not meet the safety requirements.

  8. Sharp edges and corners of hanging objects are not hung without protective measures.

  9. The safety device does not fail to hang.

  10. Heavy weather such as heavy rain, heavy snow, heavy fog, and strong winds above level 6 are not suspended.

  The above is the "ten not hanging" summed up by the author according to various versions and related specifications. If there are deficiencies, please criticize and point out that you can learn from each other, or through the discussion of this article, you can discuss together to make the "ten not hanging" of the tower crane form. Regulatory documents.

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