QD general overhead crane
Product Name: QD type electric double beam bridge crane,QD general overhead crane
Lifting Capacity: 5t-550t（The maximum weight can be 800t）
Span: 10.5-31.5m or other
Lifting Height: 9-32m or other
This crane is suitable for all kinds of general working conditions, used for lifting materials, equipment installation, maintenance, is a widely used general lifting equipment.
E-Mail：craneweihua@126.com
- Description
- Specification
1.1 applicable conditions
Weihua crane QD type electric double beam bridge crane,QD general overhead crane is suitable for all kinds of general working conditions, used for lifting materials, equipment installation, maintenance, is a universal lifting equipment with a wide range of USES.
1.2 main structural features
Main structure: the whole equipment is mainly composed of bridge frame, cart operation, trolley, driver's cab and electrical equipment.
This crane adopts the structure of double beam, double rail and single trolley.
The winch trolley of the crane is equipped with main and secondary lifting mechanisms, each of which adopts an independent transmission system.The main and secondary lifting mechanisms can not only independently complete lifting, but also cooperate to complete the work of the turnover equipment.
Weihua crane QD type electric double beam bridge crane,QD general overhead crane technology is mature, safe and reliable, easy to operate, and smooth operation. It is a mature product of our company over the years and is the most widely used crane in China.
2. Weihua crane QD type electric double beam bridge crane,QD general overhead crane Main design, manufacturing and inspection standards
1) GB/T 3811-2008 crane design specification
2) GB 6067 -- 1985 hoisting machinery safety regulations
3) GB/T 14405 -- 1993 universal bridge crane
4) GB/T 10183-2005 tolerances for construction and track installation of bridge and gantry cranes
5) GB/T 5905-1986 crane test specifications and procedures
6) JB/T 4315 -- 1997 electronic control equipment for cranes
7)GB/T 6974-1986 lifting machinery terminology
8)GB/T 17908-1999 "technical performance and acceptance documents of cranes and lifting machinery"
9)GB/T 20303.5-2006 "crane driver's cab"
3. Main technical parameters: weihua crane production drawing shall prevail.Weihua crane QD type electric double beam bridge crane,QD general overhead crane
4.1 bridge
Weihua crane QD type electric double beam bridge crane,QD general overhead crane Bridge frame is the main force component of the crane, the use of double beam double rail structure, the main beam, end beam as the main force component, supplemented by trolley track, walking platform, railings, ladders and other ancillary metal structure composition.
The main beam is a box-shaped structure, and the section of the main beam is analyzed and calculated by ANSYS finite element method to ensure that it has sufficient strength, stiffness and overall stability.
The main stress component material of the main beam is q235-b (or q345-b), and the minimum plate thickness is not less than 6mm.
Transverse butt welding seam of cover plate and web of main girder and end girder, joint seam between web plate and cover plate shall be submerged arc welding or gas shielded welding. After welding, the welding seam shall be tested in accordance with GB/T 14405-1993 "general bridge crane".
The camber of the main beam is (1 ~ 1.4) S/1000, and the maximum camber position is controlled within 1/10 of the middle span.
The trolley track adopts the whole track which welded the joint into one to ensure the trolley running well.
The end beam is box structure and the end beam and the main beam are rigidly connected.In order to facilitate transportation, the end beam shall be disconnected, and the end beam shall be connected with high-strength bolts. Reaming bolts shall be used for positioning on each connecting plate, and the positioning registration mark shall be made at the factory.
The tread of the platform of the bridge frame is made of anti-slip steel plate with a thickness of 3mm.
Balustrades with a height of 1050mm are set on the channel of the bridge frame. Horizontal horizontal bar with a spacing of 350mm is set on the balustrade, and the surrounding plate with a height of 70mm is set on the bottom. Any place on the balustrade can withstand the load of 1kN (100kgf) from any direction without plastic deformation.
In order to facilitate transportation, loading and unloading and site installation of the lifting, the main components are set up for lifting with lifting ears, lifting holes, etc., these lifting ears, lifting hole strength and location, fully consider the safety and convenience of lifting.
4.2 Weihua crane QD type electric double beam bridge crane,QD general overhead crane driver's room (or remote control operation as required by the owner, or remote control + driver's room, etc.)
The driver's cab is the working place where the operator operates the crane. It adopts the closed (open) and toughened glass driver's cab.The design of its structure type not only considers various functional requirements, strong and durable, safe and reliable, but also considers a good vision, comfortable and beautiful, making the driver feel comfortable when operating
To ensure operators vision, in front of the driver chamber is above and below the wall before and after the wall with toughened glass, the driver seat on the maximum elevation of 55 ~ 60 °, maximum Angle of depression of 70 ~ 75 °, the driver did not move the biggest positive Angle 120 °, seat rotate to the scope of the positive Angle of 270 °.
The skeleton of the driver's cab is welded from rolled section steel and pressed sheet steel, and the floor is covered with insulated rubber carpet.Both sides of the glass can be safely and conveniently wiped.The upper part of the window frame is fixed with the frame of the driver's cab.
Alarms are also set in the cab to ensure safe operation of the crane.
The arrangement of various Settings in the driver's room fully takes into account the unobstructed maintenance, convenient operation, activity space and walking of the driver.Ensure that the driver can withdraw quickly and safely in the event of an accident.
4.3 Weihua crane QD type electric double beam bridge crane,QD general overhead crane operation mechanism of cart
The crane is driven by two sets of independent driving systems.
The transmission type of the driving system for the operation of large vehicles is: 1 motor drives a reducer through a gear coupling and a transmission shaft. The low-speed shaft of the reducer is connected to the axle shaft of the vehicle with the coupling. The driving wheel ratio is 1:2.This configuration is conducive to the installation, maintenance and disassembly of various components of the driving system.
The selection of wheel diameter and material of the operation mechanism of the truck is based on the maximum supporting force of the wheel under the most adverse working conditions to ensure that part of the wheel overload will not occur.
4.4 Weihua crane QD type electric double beam bridge crane,QD general overhead crane lifting mechanism
The main and secondary hoisting mechanisms are arranged on the same trolley frame, and each of them is equipped with independent driving devices. The main and secondary hoisting mechanisms can not only independently complete lifting, but also cooperate to complete the work of turnover equipment.
The working principle of lifting mechanism: the motor does work, through the reducer speed change, and then drive the reel through the reel coupling, through the wire rope winding system to complete the lifting hook.
The hoisting mechanism braking is stable without impact (small impact), the hook positioning is accurate, not only improves the production efficiency of users, but also greatly extends the service life of each part of the hoisting mechanism.
The braking of lifting mechanism adopts the scheme of supporting braking and controlling braking.The control braking adopts electric braking, and the supporting braking is to set the brake on the motor's high-speed shaft for braking, so as to make the hoisting mechanism brake smooth, safe and reliable.
All parts of the lifting mechanism are arranged in compact and easy to maintain to ensure safety and reliability.
4.5 Weihua crane QD type electric double beam bridge crane,QD general overhead crane trolley operation
The running mechanism of the car is supported by 4 wheels, and a set of independent driving system is used to drive the car centrally.
The transmission type of the car driving system is: 1 motor drives a vertical reducer through a gear coupling. With the coupling and the transmission shaft, the two low-speed shafts of the reducer are connected to the two vehicle wheel shafts. The driving wheel ratio is 1:2.This configuration is conducive to the installation, maintenance and disassembly of various components of the driving system.
The selection of wheel diameter and material of the trolley operating mechanism is based on the maximum supporting force of the wheel under the most adverse working conditions to ensure that part of the wheel overload does not occur.
Trolley frame is mainly composed of several box structure beam (support beam, end beam, connecting beam) and different thickness of the plate, profile welded structural parts.After blanking, bending, drilling and other processes, the trolley frame is marked on the platform and made according to the end beam, connecting beam, supporting beam and other parts respectively, and then assembled, positioned and welded according to the drawing based on the panel plane.After the whole welding, welding motor, reducer, drum and other supports according to the drawing.Our company has the overall processing capacity of trolley frame, trolley frame can be in the ground milling and boring machine T6920A/160 x 50 on the overall processing.The production of trolley frame conforms to the relevant provisions of GB/T 14405-2011.
1.1 applicable conditions
Weihua crane QD type electric double beam bridge crane,QD general overhead crane is suitable for all kinds of general working conditions, used for lifting materials, equipment installation, maintenance, is a universal lifting equipment with a wide range of USES.
1.2 main structural features
Main structure: the whole equipment is mainly composed of bridge frame, cart operation, trolley, driver's cab and electrical equipment.
This crane adopts the structure of double beam, double rail and single trolley.
The winch trolley of the crane is equipped with main and secondary lifting mechanisms, each of which adopts an independent transmission system.The main and secondary lifting mechanisms can not only independently complete lifting, but also cooperate to complete the work of the turnover equipment.
Weihua crane QD type electric double beam bridge crane,QD general overhead crane technology is mature, safe and reliable, easy to operate, and smooth operation. It is a mature product of our company over the years and is the most widely used crane in China.
2. Weihua crane QD type electric double beam bridge crane,QD general overhead crane Main design, manufacturing and inspection standards
1) GB/T 3811-2008 crane design specification
2) GB 6067 -- 1985 hoisting machinery safety regulations
3) GB/T 14405 -- 1993 universal bridge crane
4) GB/T 10183-2005 tolerances for construction and track installation of bridge and gantry cranes
5) GB/T 5905-1986 crane test specifications and procedures
6) JB/T 4315 -- 1997 electronic control equipment for cranes
7)GB/T 6974-1986 lifting machinery terminology
8)GB/T 17908-1999 "technical performance and acceptance documents of cranes and lifting machinery"
9)GB/T 20303.5-2006 "crane driver's cab"
3. Main technical parameters: weihua crane production drawing shall prevail.Weihua crane QD type electric double beam bridge crane,QD general overhead crane
4.1 bridge
Weihua crane QD type electric double beam bridge crane,QD general overhead crane Bridge frame is the main force component of the crane, the use of double beam double rail structure, the main beam, end beam as the main force component, supplemented by trolley track, walking platform, railings, ladders and other ancillary metal structure composition.
The main beam is a box-shaped structure, and the section of the main beam is analyzed and calculated by ANSYS finite element method to ensure that it has sufficient strength, stiffness and overall stability.
The main stress component material of the main beam is q235-b (or q345-b), and the minimum plate thickness is not less than 6mm.
Transverse butt welding seam of cover plate and web of main girder and end girder, joint seam between web plate and cover plate shall be submerged arc welding or gas shielded welding. After welding, the welding seam shall be tested in accordance with GB/T 14405-1993 "general bridge crane".
The camber of the main beam is (1 ~ 1.4) S/1000, and the maximum camber position is controlled within 1/10 of the middle span.
The trolley track adopts the whole track which welded the joint into one to ensure the trolley running well.
The end beam is box structure and the end beam and the main beam are rigidly connected.In order to facilitate transportation, the end beam shall be disconnected, and the end beam shall be connected with high-strength bolts. Reaming bolts shall be used for positioning on each connecting plate, and the positioning registration mark shall be made at the factory.
The tread of the platform of the bridge frame is made of anti-slip steel plate with a thickness of 3mm.
Balustrades with a height of 1050mm are set on the channel of the bridge frame. Horizontal horizontal bar with a spacing of 350mm is set on the balustrade, and the surrounding plate with a height of 70mm is set on the bottom. Any place on the balustrade can withstand the load of 1kN (100kgf) from any direction without plastic deformation.
In order to facilitate transportation, loading and unloading and site installation of the lifting, the main components are set up for lifting with lifting ears, lifting holes, etc., these lifting ears, lifting hole strength and location, fully consider the safety and convenience of lifting.
4.2 Weihua crane QD type electric double beam bridge crane,QD general overhead crane driver's room (or remote control operation as required by the owner, or remote control + driver's room, etc.)
The driver's cab is the working place where the operator operates the crane. It adopts the closed (open) and toughened glass driver's cab.The design of its structure type not only considers various functional requirements, strong and durable, safe and reliable, but also considers a good vision, comfortable and beautiful, making the driver feel comfortable when operating
To ensure operators vision, in front of the driver chamber is above and below the wall before and after the wall with toughened glass, the driver seat on the maximum elevation of 55 ~ 60 °, maximum Angle of depression of 70 ~ 75 °, the driver did not move the biggest positive Angle 120 °, seat rotate to the scope of the positive Angle of 270 °.
The skeleton of the driver's cab is welded from rolled section steel and pressed sheet steel, and the floor is covered with insulated rubber carpet.Both sides of the glass can be safely and conveniently wiped.The upper part of the window frame is fixed with the frame of the driver's cab.
Alarms are also set in the cab to ensure safe operation of the crane.
The arrangement of various Settings in the driver's room fully takes into account the unobstructed maintenance, convenient operation, activity space and walking of the driver.Ensure that the driver can withdraw quickly and safely in the event of an accident.
4.3 Weihua crane QD type electric double beam bridge crane,QD general overhead crane operation mechanism of cart
The crane is driven by two sets of independent driving systems.
The transmission type of the driving system for the operation of large vehicles is: 1 motor drives a reducer through a gear coupling and a transmission shaft. The low-speed shaft of the reducer is connected to the axle shaft of the vehicle with the coupling. The driving wheel ratio is 1:2.This configuration is conducive to the installation, maintenance and disassembly of various components of the driving system.
The selection of wheel diameter and material of the operation mechanism of the truck is based on the maximum supporting force of the wheel under the most adverse working conditions to ensure that part of the wheel overload will not occur.
4.4 Weihua crane QD type electric double beam bridge crane,QD general overhead crane lifting mechanism
The main and secondary hoisting mechanisms are arranged on the same trolley frame, and each of them is equipped with independent driving devices. The main and secondary hoisting mechanisms can not only independently complete lifting, but also cooperate to complete the work of turnover equipment.
The working principle of lifting mechanism: the motor does work, through the reducer speed change, and then drive the reel through the reel coupling, through the wire rope winding system to complete the lifting hook.
The hoisting mechanism braking is stable without impact (small impact), the hook positioning is accurate, not only improves the production efficiency of users, but also greatly extends the service life of each part of the hoisting mechanism.
The braking of lifting mechanism adopts the scheme of supporting braking and controlling braking.The control braking adopts electric braking, and the supporting braking is to set the brake on the motor's high-speed shaft for braking, so as to make the hoisting mechanism brake smooth, safe and reliable.
All parts of the lifting mechanism are arranged in compact and easy to maintain to ensure safety and reliability.
4.5 Weihua crane QD type electric double beam bridge crane,QD general overhead crane trolley operation
The running mechanism of the car is supported by 4 wheels, and a set of independent driving system is used to drive the car centrally.
The transmission type of the car driving system is: 1 motor drives a vertical reducer through a gear coupling. With the coupling and the transmission shaft, the two low-speed shafts of the reducer are connected to the two vehicle wheel shafts. The driving wheel ratio is 1:2.This configuration is conducive to the installation, maintenance and disassembly of various components of the driving system.
The selection of wheel diameter and material of the trolley operating mechanism is based on the maximum supporting force of the wheel under the most adverse working conditions to ensure that part of the wheel overload does not occur.
Trolley frame is mainly composed of several box structure beam (support beam, end beam, connecting beam) and different thickness of the plate, profile welded structural parts.After blanking, bending, drilling and other processes, the trolley frame is marked on the platform and made according to the end beam, connecting beam, supporting beam and other parts respectively, and then assembled, positioned and welded according to the drawing based on the panel plane.After the whole welding, welding motor, reducer, drum and other supports according to the drawing.Our company has the overall processing capacity of trolley frame, trolley frame can be in the ground milling and boring machine T6920A/160 x 50 on the overall processing.The production of trolley frame conforms to the relevant provisions of GB/T 14405-2011.
