I.Application & Product Overview
Nuochao Intelligent’s Routine Tensile Testing Machine is a specialized device designed for routine tensile strength testing of toughened glass disc insulator caps (metal fittings).
This equipment is developed specifically to meet the requirements of high efficiency, fast testing speed, and simple operation in routine tensile testing. Based on practical production experience, it solves the problems of unreliable testing and low efficiency caused by the original manual filling of tightening blocks.
Through optimized electrical and control systems, the machine realizes automatic tightening and automatic release of the clamping sleeve. In addition, the clamping sleeve status is interlocked with the loading hydraulic cylinder: only when the clamping sleeve is in the correct tightening position will the hydraulic cylinder be allowed to load.
After setting the force parameter for a specific type of cap in the program, the operator only needs to place the cap onto the clamping sleeve, screw the ball head into the cap socket, and press the automatic test button.
The system then automatically performs:
Automatic clamping → Automatic loading → Hydraulic cylinder automatic return after test completion → Automatic unclamping → Removal of the cap
Except for loading and unloading the cap, no manual intervention is required.
The preset force value, real-time test force, and test result are displayed on the same program interface. This equipment integrates cap clamping and mechanical testing into one unified control system, instead of two separate operations.
II. Main Technical Specifications
(Single machine including hydraulic and control system, excluding conveyor)
Maximum test force: 600 kN
Test force measuring range: 20–600 kN
Test force accuracy: better than ±1% (full range, no segmentation)
Machine structure: Vertical type
Maximum test space (excluding piston stroke and fixtures): 1000 mm
Cap testing method: Manual loading/unloading, pneumatic tightening
Internal width: 800 mm
Maximum piston stroke: 200 mm
Maximum tensile speed: 1350 mm/min
Load rate: 15 kN/min – 600 kN/min
Constant force rate control range: 0.1–100% FS/min
Control range: 2%–100% FS
Main frame structure: Hydraulic cylinder mounted at bottom, proportional servo control
Control system technical parameters:
Test force measurement & display
Measurement method: High-precision load sensor
Display method: Touch screen display
Automatic control
Control mode: Closed-loop automatic control / Manual open-loop control
Control valve: Imported high-precision high-frequency electro-hydraulic proportional servo valve
Control modes:
a. Constant speed piston displacement control
b. Constant rate force control
c. Automatic tensile test control
Automatic recording of tensile test data (holding force, time), time resolution to seconds
Fully enclosed protective cover:
Front door equipped with explosion-proof glass and side sliding opening. After closing, it is interlocked with the loading system. The door opens automatically after test completion.
Connection thread: M56 × 4
Accessories:
Ball heads: Mark 16, 20, 24, 28, 32 (M56×4), one set each, total 5 sets
Clamping sleeve assemblies: 8 sets (common body, replaceable tightening blocks and tapered rods)
Power supply: 15 kW / 380 V
Estimated time for each operation step:
Ball head mounting: 3 s
Cap tightening: 2 s
Hydraulic preloading: 3 s
Testing: 5 s
Unloading: 3 s
Ball head lifting: 3 s
III. Main Configuration
Testing Machine Main Unit – 1 Set
Includes:
1.1 Precision piston hydraulic cylinder – 1 set
1.2 Four-column main frame – 1 set
1.3 Cylinder base – 1 pc
1.4 Enclosed protective cover – 1 set
1.5 High-precision load sensor – 1 set
1.6 Pneumatic tightening device – 1 set
Electro-Hydraulic Servo Loading System (Hydraulic Station) – 1 Set
Includes:
2.1 Italy Marzocchi high-pressure low-noise gear pump – 1 set
2.2 Pump motor – 1 set
2.3 Taiwan Dongfeng proportional relief valve – 1 set
2.4 Beijing Huade solenoid directional valve – 1 set
2.5 Integrated hydraulic valve block – 1 set
2.6 High-pressure pipeline oil filter – 1 set
2.7 Air-cooled oil cooler – 1 set
2.8 Air filter and other hydraulic accessories – 1 set
2.9 Enclosed oil tank – 1 pc
Testing Machine Control System – 1 Set
3.1 Testing machine control system (self-developed) – 1 set
3.2 Electromagnetic interference shielding system – 1 set
3.3 Cantilever touch screen display – 1 set
3.4 Dedicated testing software (self-developed, functions and report format customizable)
3.5 Power control system (Siemens, Schneider or equivalent) – 1 set
3.6 Weak current control system (Xinjie PLC, Schneider relays) – 1 set
Documents & Standard Accessories
4.1 Operation manual with complete assembly drawings, hydraulic schematic, and electrical schematic; maintenance manual; factory inspection certificate – 1 set
4.2 Spare sealing parts for hydraulic station (O-rings, bonded seals), 20 pcs each
4.3 Tool box including screwdrivers, adjustable wrench, hex keys – 1 set
Accessories
5.1 Ball heads: Mark 16, 20, 24, 28, 32 – one set each
5.2 Clamping sleeve assemblies: 8 sets, manufactured according to drawings
IV. Packing List
| Category | No. | Name | Quantity | Remark |
|---|---|---|---|---|
| Product | 1 | Main machine | 1 set | Including frame, load sensor, loading cylinder, electrical cabinet, control cabinet, protection device |
| 2 | Hydraulic station | 1 set | Including oil tank, motor, pump, valve block, hydraulic valves, high-pressure hoses, filters | |
| 3 | Clamping sleeves | 8 sets | Designed according to customer drawings | |
| 4 | Ball heads | 5 pcs | Mark 16/20/24/28/32 | |
| 5 | Sealing rings | 1 set | O-rings & bonded seals for M14×1.5, M22×1.5 | |
| 6 | Tool box | 1 pc | ||
| Documents | 1 | Operation manual | 1 copy | |
| 2 | Certificate of conformity | 1 copy | ||
| 3 | Packing list | 1 copy |