Movable overhead cranes and gate bridge cranes

Mobile cranes are a basic device mounted on a mobile motor and controlled by pulleys and cables. Their design facilitates their transportation to and from different sites. In most cases, they do not require much effort to assemble and install. Mobile cranes are designed to use a set of simple machines to raise and lower objects as well as move them horizontally.

Mobile cranes are a basic device mounted on a mobile motor and controlled by pulleys and cables. Their design facilitates their transportation to and from different sites. In most cases, they do not require much effort to assemble and install. Mobile cranes are designed to use a set of simple machines to raise and lower objects as well as move them horizontally.

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Movable overhead cranes and gate bridge cranes

6/23/2021 6:01:10 PM  ۰ Comment   ۱۳۹ Hits

1 Purpose and Scope of Application The purpose of this standard is to determine the layout, requirements and direction of movement of the main controls for mobile cranes, masts, revolvers, driver's cabs and loaders up and down. This standard applies to mobile overhead cranes, transversal cranes and gate bridge cranes as defined in ISO 4308-1. 2 Mandatory references The following mandatory documents contain the provisions referred to in the text of this National Standard of Iran. Thus, those provisions are part of this National Standard of Iran. If a document is referred to with the date of publication. , Its amendments and subsequent revisions are not considered in this national standard of Iran. Regarding the documents that have been referred to them without mentioning the date of publication, their latest revisions and subsequent amendments are always considered. Use of the following mandatory references is required to apply this standard: 2-1 ISO 4306-1, Lifting appliances- Vocabulary- Part 1: General. 2-2 ISO 7752-1, Lifting appliances- Controls- Layout and characteristics- Part 1: General principles. 3 General requirements 1) The main controls for the crane shall be in accordance with the requirements of the ISO 7752-1 standard, except for what is specified in the block or 3-2. 2 3- The lever forces must be according to the task of the device. The following values ​​are recommended: a) Manual levers - front / rear 60 N - right / left 40 N - b - pedals 150 N 4 Main control arrangement Controls for mobile overhead crane and gate bridge, if applicable, Figure 1 or Figure 2 should be placed around and in front of the driver. Pedal Mark 2 Transverse Length 5 Auxiliary Lift Main Lift Braking Pedals 1 Bottom Down Open Rake Closed Rake 4 Up High Longitudinal and Transverse Motion 3 Driver Stop Cabin Sign 2 Round 3 3-1 Can be a common pedal to release. 2. Alternate positions. 2- The directions of the handle are in the same direction of movement. - or the function of other loading devices - Selective Figure - 1 Arrangement of the main controls - 1 can be a common pedal to release. 2. Alternative position. 3. The directions of the handle are in the same direction of motion. 4. Selective


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