I. Introduction

 Ivy Machinery, the leading Asia bus door system manufacturer, offers rugged Pneumatic Lift Lock Rotary Door System for tour and intercity coaches. Incorporating technology proven in decades of demanding service, Ivy rotary door system provides superior reliability and ease of maintenance. The NR300 Plug Door System consists of rotary actuator, shaft assembly, and door panel assembly. The NR300 Actuator provides rotary motion and the “Lift-to-Latch” feature preferred by many coach builders and operators. A double acting cylinder drives a splined shaft through a helical ball cage to provide rotary motion. When the door reaches the closed position, the actuator lifts the door shaft and door panel approximately 10mm, enabling latches on the door panel to engage mating wedges on the door jambs. The door panel is held closed as long as air pressure is applied the actuator.

II.Mechanism

1. AUTO-OPERATION When “open” or “close” switch is pushed, the 5-way 2-position solenoid valve will be actuated, which drives linear pneumatic cylinder move up and down. Through splined shaft, the linear motion transfer to rotation, which cause door open and close.  

2. EMERGENCY RELEASE In case of emergency, rotate the emergency valve 90 degree to release the air pressure. The door panel will drop as soon as air pressure in the cylinder is low. Push the door panel manually to open the door.

3. SENSITIVE EDGE In case the passenger or other items are clamped during the vehicle door closing, the door panel will be lifted and actuate the limit switch to reverse the motion to open the door. 

III.Main Parameter

Maximum torque in locked position (@90 psi): 122 ft-lbs

Recommended door shaft rotation: 90 degree

Operating temperature: -30°C to 80°C

Envelope size: 5.51”w x 12.50”d x 4.53”h

Operating pressure: 90-125 psi

Locking mechanism: Local wedge lock

Door closing time: 3-5 seconds

Door opening time: 3-5 seconds

Question 1: We have special requirement, can it be achieved?

We have more than 10 designers for design and help customer with their special requirement. We are happy to help customer to solve their problem with doors

Question 2: Are You a Manufactory or Trade Company?

We are a professional manufacturer and has professional international team

Question 3: Where Is Your Factory Located? How can I Visit There?

Our factory is located in Nanjing , Jiangsu China, one hour far from Shanghai by train. The production plant, research base and office block together occupy an area of 18,000 square meters.We can pick you up from Shanghai airport and then go to our factory, it takes about one hour by train. Warmly welcome you to visit our factory!

Question 4: How Many Days Will Samples Be Finished? How about The Mass Production?

We are honored to offer our existing samples to be evaluated

Sample lead time: 2 days after confirm the artwork

Production lead time: 10-15days after payment

Question 5 : When Can I Get the Price?

We usually quote within 24 hours after we get your inquiry. If you are very urgent to get the price, please call us or tell us in your mail so that we will give priority to your inquiry.

Question 6: Can You do OEM Orders?

Yes, with 15 years of OEM experience, we will be extremely happy to offer OEM service. Warmly welcome your orders!

Question 7: What about Your Payment Term?

Usually we accept T/T, other methods could be negotiated.Payment of 30% needs to be made in advance , rest of the 70% payment should be made within 5 days before shipment. We can also accept Paypal and West Union .

1. Strictly abide by quality standards in the contract, and fulfill all the requirement in the contract too

2. All products from IVY be made according to the quality standards strictly. If the products be used in normal condition, the quality guarantee period is one year.During this year,we promised to change all broken components in free. After one year, we promise to maintain or replace all broken components only charge the cost of parts.

3.Establish professional sales staff,  ready to provide users with professional technical advice and professional after-sale protection

4. If there are any problems during the installation or adjustment , we will help customer to solve the problems firstly before we check out the responsibilities. Customer’s requirement always comes firstly.

5.During the guarantee period (operating condition meet the  requirements list in contract  and also products standards ), we maintain or replace all broken components freely ,   and ready to provide various spare parts