Automobile automation production line manufacturers explain the technical requirements of chassis and primary interior assembly production line of new energy automobile production line:

The main material of chassis and primary interior assembly line is steel structure, which adopts combined assembly form, and mainly consists of XT-100 suspension conveyor line body, driving tension mechanism, tooling trolley spreader, car body on-line elevator, tooling trolley opening and closing pneumatic mechanism, unpowered track lifting trolley, roof hanger structure, electrical control system, etc. The running mode of the wire body is either continuous running or beat running (adjustable in 0-999 seconds) with the conveyor chain dragging the spreader of the tooling trolley.

1.2 this assembly line is mainly used for the assembly of chassis and primary interior decoration of electric vehicles. the main body of spreader for conveying tooling trolley is welded with square pipes of 100x100x4.0mm and 50x100x4.0mm, and it is required to ensure that no obvious deformation occurs during the bearing process. The trolley boom beam is made of φ68x5mm seamless steel pipe, with UCP209 bearings at both ends to realize the opening and closing of the boom. The whole line is equipped with 14 trolley spreaders, with a total weight of about 1000Kg.

1.3 the total length of the assembly line is about 81.2m (including driving mechanism and tensioning mechanism).

1.4 The total width of the unilateral shape of the wire body is 5000mm and 12000 mm. The height of the wire body is set according to the process requirements. The process height of the high station is 1550—1600mm, and the process height of the low station is 450-500 mm.

1.5 there are totally 14 trolley spreaders in the whole line, of which about 8 are effective stations, and the distance between trolley spreaders is 5400mm.

1.6 XT--100 traction chain is used for conveying chain. To reduce friction coefficient and prevent crawling phenomenon, rolling bearings are built into chain rollers. The chain is manufactured according to GB8350-87 standard, and the service life of the bearing ensures that the normal operation of the plate chain is not less than 30,000 hours.

1.7 the whole line is provided with a set of driving mechanism, and the 2.2Kw motor is equipped with 74# double-stage cycloidal reducer; The matching of motors is reasonable, which ensures that the assembly line runs continuously for 24 hours, and the temperature rise of motors is within the standard range.

1.8 After the motor is decelerated by the speed reducer, the trolley sling reaches the normal running speed of 1m/min. Under this running speed, the motor is guaranteed to work at the rated speed and power; One set of frequency conversion governor for assembly line wiring body, which adopts Mitsubishi brand of Japan; The motor is fine-tuned by the frequency conversion governor, so that the speed of the wire body can be adjusted at V=0.4-1.6m/min (1m/min is commonly used), and the selected motor power is 2.2KW, which can only be used after being confirmed by Party A..

1.9 the tightening mechanism adopts sliding bearing seat to support the tightening shaft, and the lead screw of trapezoidal thread is tightened, and the tightening device can be adjusted from 0 to 0-150mm.

1.10 the driving tension frame is welded by section steel, and the skeleton should have enough strength and rigidity.

1.11 line body mounting bracket: the upright post is welded by 120*120*3mm square pipe, the cross beam is 16# national standard I-steel, and the auxiliary bracket is welded by 40*80*2.0mm square pipe; Column installation spacing is 5400mm.

1.12 configuration for each assembly station: 2 40W double-tube grille lamps, 1 industrial shaking fan, 1 1.5-inch galvanized air pipe with double-head quick plug, 2 aluminum alloy slide rail profiles with four-wheel trolley hooks, and 1 set of 220V/380V sockets.

1.13 A pneumatic lifting platform is set up at the upper line of the car body. According to the needs of the production process, the lifting platform is installed in pit type. Party A shall prepare the ground resistance foundation of the line body in advance according to the ground resistance drawings provided by Party B; After the line body is installed, both sides of the pit are sealed with 3mm-thick patterned steel plates, and 30*40*1.75mm square tubes are used as supporting frames under the patterned steel plates to increase the bearing capacity of the sealing plates. The patterned steel plates are sealed with movable cover plates for future cleaning and maintenance.

1.14 A set of pneumatic lifting mechanism is set at the upper and lower lines of the vehicle body, which is used for opening and closing the spreader of the tooling trolley.

1.15 Two elevators are set at the lower line of the vehicle body (on the left and right sides of the upper line end of the plate chain line) to transplant the workpieces on the spreader of the suspended tooling trolley to the plate chain line for secondary interior assembly.

1.16 The assembly line runs smoothly, without obvious crawling phenomenon: the chain and sprocket teeth engage smoothly, without noise and jamming phenomenon; the motor current is within the rated range, and the motor temperature rise is within the standard range; the reducer and bearing have no abnormal temperature rise.

1.17 Technical requirements for electrical control: The design of electrical control system of assembly line shall meet the technological requirements, and the reliability, safety and convenience of management of the system shall be fully considered. The specific requirements are as follows:

1.18.1 The main console is located at the driving end, and there are five button boxes evenly arranged on the whole line. The button boxes are provided with two buttons: emergency stop and help.

1.18.2 overload protection is required for the motor.

1.18.3 For convenience of debugging and maintenance, the motor should be able to reverse for a short time when it is unloaded.

1.18.4 the emergency stop button is interlocked with the motor, and it can be started only after troubleshooting.

1.18.5 Before the assembly line starts to run, it shall sound a light signal prompt and start after a delay of 10 seconds.

1.18.6 The off-line end of the vehicle body is provided with a photoelectric control switch, and the line body automatically stops running when the vehicle body is not lifted to the end of the assembly line.

1.18.7 The normal running speed of the line body is 1m/min, and the motor can be adjusted from 0.4 to 1.6m/min by the frequency converter, with adjustable acceleration and deceleration time.

1.18.8 Omron photoelectric switch, Chint AC contactor and Mitsubishi frequency conversion governor are used as electrical components, and Wenzhou Chint products are used as circuit breakers, power switches, indicator lights and start buttons.

1.18.9 The design, manufacture and installation of all electrical control cabinets shall meet the safety standards of electrical technology.

1.19 Paint the surface of steel structure parts: the color of wire body and electric control cabinet is ice gray (GY09), and the color of plate chain is dark yellow (Y08).