1．GENERAL DESCRIPTION:
XJ400 is truck-mounted workover rig equipped with double drum, and it is special equipment for oil field and mine. The Max. hook load is 900kN, designed and manufactured to suit for service operation with depth 12,000 ft (2-7/8″(73mm))  . The carrier drive type is 10*4, axles is heavy with wide wheel base axle to suit for long time moving. The carrier frame is welded by special strengthen steel with 16Mn universal shape; The rig adopts CAT C13 diesel engine and CAT MT series  hydraulic torque converter.
The rig is character with super weather proof and shock resistance to suit for environment temperature of – 20° C to + 60° C and  rough terrain road conditions in North American.
In order to ensure the quality of the rig, the main power units and key hydraulic components are import , all the oil seals  and bearings are standard units .  

The rig is consists of six system:

• Power system: including engine, transmission , control unit and diesel tank ,and so on,
• Transmission system: including transmission shaft ,transmission chain and cover ,etc;
• Carrier system: including carrier frame, axles, steer system,  front & rear suspension , cab, tool  box ,etc;
• Drawworks system: including angle gear box, main drum ,sandline drum and brake system ,hydraulic brake, drawworks frame and cover ,etc;
• Mast and traveling system: including  mast, crown block ,traveling block, wireline, mast base ,etc;
• Hydraulic &air & electric system: including hydraulic system ,air system ,electric system and driller’s control console, etc;

2. Main technical requirements
2.1Design Standards

Following standards are utilized for the design and manufacture of the subject rig:

• IFB No.:
• API Spec 4F Drilling And Well Servicing Structures
• API Spec Q1 Specification For Quality Programs
• API Spec 8A Specification For Drilling And Production Hoisting Equipment
• API Spec 7K Specification for Drilling Equipment
• API Spec 7 Specification For Rotary Drilling String Component
• SY5202-91 Workover Rig Technical Condition
• API Spec 9A Specification for Wire Rope
• SY/T5595-93 Specification for Drilling Rig Drive Roller Chain
• GB2034-89 Workover Rig Model And Basic Specification
• GB4599-94 Photometry Characteristic Of Headlamps For Motor Vehicles
• GB4785-84 Numbers, Positions And Color Of The External Light And Light Signaling Devices For Motor Vehicles And Their Trailers
• GB4660-94 Photometry Characteristic Of Front Fog Lamps For Motor Vehicles
• GB5920-94 Photometry Characteristic Of Front And Rear Position (Side) Lamps, End-Out Line Marker Lamps And Stop Lamps For Motor Vehicles And Their Trailers
• GB/T1154-98 Motor Vehicles And Trailers Rear Fog Light Photometry
• GB116562-94 Motor Vehicles Forward Visibility For Drivers Requirements And Measurement Methods
• GB15084-94 Motor Vehicles Rear View Mirrors Requirement Of Performance And Installation
• GB15085-94 Motor Vehicles Wind Shield Wipers And Washer Systems Performance Requirement And Testing Methods
• GB15235-94 Photometry Characteristics Of Reversing Lamps For Motor Vehicles
• GB15742-1995 Automobile Electric Horn Performance Requirements And Test Methods
• GB15083-94 Motor Vehicles Seat System Strength Requirement And Test Methods
• GB15086-94 Motor Vehicles Door Locks And Door Hinges Performance Requirements And Test Methods
• GB14761.6-93 Emission Standards For Smoke At Free Acceleration From Vehicles With Diesel Engine
• GB3826.1-83 General Requirements For Explosion Proof Electronics In Explosive Condition
• GB3836.2-83 Explosion Proof Electrical Equipment And Explosion Segregated Electric Equipment Used In Explosive Condition

2.2 Overall Rig Specifications

Main Unit:
Type:                                              XJ400 WORK OVER RIG
Nominal service depth:                  12,000  (Æ2-7/8″(73mm))
Max. hook load:                             200,000lbs （900KN）
Engine Power:                 440hp/2100r/min
Mast Height:                             104’（31.7m）
Traveling Blocks:                           3x4
Drive type:                                      10*4
Wireline diameter :                         Æ26mm
Overall Dimension:                        17.5m*3.150m*4.35m
Turning Radius:                             16m

2.3 Main Components technical specification

Engine

Model                                         CAT C13
Power                                  440HP/2100rpm
Rated speed:                             2210rpm

Transmission:

Model                          Caterpillar MT Series
Maximum input power              450HP
Maximum input torque             1532N.M

Angle Gear Box :
Model JX90

4.Drawworks
Model JC18

5. Mast:
Angle steel welded twin box legs(upright style), Hydraulic Telescoping Rising/Lowing
Model:JJ9031

Crown block

6. Hook Block
Model:       YG90

• Hydrulic system
• Master oil pump

Rated pressure:      14Mpa  
Discharge:             208L/min (2100prm)

• Hydraulic Winch

• Raising cylinder

• Hydraulic jack

8.Pneumatic System

9. Electric system:

10. Transmission   system
10.1 Transmission shaft:

10.2  Transmission chain:
Model :24S-1
Conform to standard  SY/T5595-93
11. Carrier

The first and second axle is none-drive axle,