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JG-1000S Microcomputer-Controlled Electro-Hydraulic Servo Manhole Cover Pressure Testing Machine

Microcomputer-Controlled Electro-Hydraulic Servo Manhole Cover Pressure Testing Machine Gutter Manhole Cover Pressure Testing Machine: Load-Carrying Capacity and Deformation Tests for Steel-Fiber-Reinforced Concrete Cover Plates

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Specialized Testing Machine Series

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lbt@lbt.ltd

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+86-15102211717

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JG-1000S Microcomputer-Controlled Electro-Hydraulic Servo Manhole Cover Pressure Testing Machine

Description

Product Introduction:

The micro‑electromechanical‑hydraulic servo manhole cover pressure testing machine employs a hydraulic power source, electro‑hydraulic servo control technology, and computer‑based data acquisition and processing, enabling closed‑loop control and automated testing. It comprises four main components: the testing frame, the oil supply unit (hydraulic power source), the measurement and control system, and the test fixtures. Its maximum test force is 1000 kN, and its accuracy class exceeds Grade 1.

It is used for testing the load-bearing capacity (including residual deformation and test loads) of manhole covers made from various materials, supporting closed-loop control such as constant-rate loading and constant-rate deformation, and enabling automatic calculation of specimen performance parameters.

This testing machine and its accessories comply with the following standard requirements:

GB/T 23858 “Manhole Covers”

GB/T 26537 “Manhole Covers for Steel Fiber Reinforced Concrete”

CJ/T 211 “Manhole Covers Made of Polymer Matrix Composites”

CJ/T121 “Inspection Manhole Cover Made of Recycled Resin Composite Materials”

CJ/T 3012 “Cast Iron Manhole Covers”

CJ/T 511 “Cast Iron Manhole Covers”

GB/T 2611 “General Technical Requirements for Testing Machines” and GB/T 16826 “Electro-Hydraulic Servo Universal Testing Machine”

Product Features:

Testing machine host:

The testing machine features a four‑column frame structure with the main hydraulic cylinder mounted below. Its main assembly comprises components such as the base, feed carriage, hydraulic cylinder, piston, hydraulic pressure sensor, precision lead screw, and upper crossbeam.

The testing machine employs highly sealed single-acting/double-acting hydraulic cylinders, offering high efficiency and exceptional durability.

The testing machine has been carefully designed with aesthetics, convenience, and safety in mind; for example, its main structural components are fabricated from high-strength steel plates, ensuring robust rigidity and excellent stability.

The load‑measuring element is a high‑precision hydraulic digital sensor that responds to unidirectional loading. It serves as the key component for measuring and testing the applied force in this instrument. The electrical signal generated under load is acquired and processed by the computer‑based measurement and control software. This sensor boasts high accuracy, excellent repeatability, and outstanding long‑term stability.

 When using a testing machine to measure residual deformation of manhole covers with a sensor, the dial indicator can be securely mounted at an appropriate central position via a magnetic base through the central opening in the upper beam, offering convenience and flexibility while ensuring accurate and reliable measurements. This sensor features high precision and resolution, strong resistance to vibration and electromagnetic interference, and excellent repeatability.

Test oil source cabinet:

 The integrated oil‑source cabinet combines a hydraulic pump station, oil‑source control, host‑machine control, a measurement and control system, and a computer into a single unit. It features a built-in radial piston pump that delivers stable output with low noise. With its high level of integration, the cabinet occupies minimal floor space and offers convenient operation and monitoring.

The entire oil‑source system employs servo closed-loop control, equipped with digital servo valves, torque‑ and speed‑stable motors, and high‑precision valve‑plate assemblies, delivering rapid response and high sensitivity. The system monitors load, deformation, and other parameters in real time, offering tracking, follow‑up, and adjustability, thereby enabling fully automatic, precise control.

Telemetry and Control System:

The measurement and control system comprises a digital servo valve, high-precision hydraulic digital sensors, a controller, and dedicated software, delivering high control accuracy and excellent reliability. It utilizes a high-speed Ethernet communication interface to connect with the computer, offering multiple control modes such as load and stress control, along with on-screen display of test force, peak values, deformation, and various test curves, and enabling seamless switching between different control strategies.

Test data are managed using a standard database and can be accessed at will, enabling reanalysis of test data and curves, local magnification, and data re-editing. The system can automatically calculate various mechanical property parameters of the material, generate complete test reports and curves (printer not included), and provide a networked data interface.

The measurement and control system features multiple limit‑protection functions, including force overload protection, force‑channel over‑speed protection, and range‑limit protection.

The measurement and control system allows users to customize test programs according to experimental requirements, such as cyclic loading and load‑holding tests.

Technical Specifications:

Parameter item	Specific parameters
Maximum test force	1000KN
Accuracy class	Level 1
Relative error of the indicated value	±1%
Effective measurement range	1%–100% F·S (no range divisions across the full scale)
Relative error of deformation indication	±1%
Deformation measurement resolution	0.001mm
Maximum spacing of the compression surface	250-300 mm
Effective distance between the two columns	1200mm
Piston stroke	300 mm
Maximum piston travel speed	80mm/min
Press plate dimensions	Φ356 mm (customizable)
Host external dimensions	1400×1200×1600 mm
Oil source cabinet dimensions	980×500×1100 mm (subject to the actual product)
Input power supply	380V±10V
Power	1.1kW
Oil source cabinet weight	150 kg
Overall machine weight	Approximately 2,500 kg

Standard product configuration:

Standard Host

Micro‑electromechanical hydraulic servo manhole cover pressure testing machine: main frame with a high‑efficiency single‑acting bottom‑mounted hydraulic cylinder.

High-precision hydraulic pressure sensor;

Φ356 mm pressure plate (shim block optional);

Standard Oil Source System:

One oil source;

Digital servo valve, plunger pump, branded motor, pressure-reducing valve, solenoid valve, oil filter, pipe fittings, 304 stainless steel seamless steel tubing, oil tank.

Standard Measurement and Control System:

One computer,

One closed-loop controller;

Specialized testing software for microcomputer-controlled electro-hydraulic servo manhole cover pressure testing machines

Standard test equipment:

One rigid spacer, Φ356×40mm

Other spacer blocks are available as options; manhole covers and grating spacers can be configured (additional charge applies).

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FAQs

Do you supply full-set testing instruments for asphalt and geotechnical engineering projects?

We offer complete lab solutions including asphalt viscosity tester, asphalt rutting tester, geotextile permeability tester, low-temperature flexibility tester and concrete/cement test equipment, covering raw material detection for road, water conservancy and construction engineering projects

Can you customize fixtures or test machines based on our special test requirements? How about after-sales service and warranty?

We provide non-standard customization of test equipment and customized fixture clamps according to customers’ specimen size and test standards. All our testing machines enjoy 12-month factory warranty; overseas customers get remote online debugging guidance, spare parts supply and technical operation training. Our products have been exported to over 70 countries globally

Which materials can be measured by your Vicat softening point tester?

It measures heat deflection temperature and Vicat softening temperature of plastics, hard rubber, nylon, insulating materials and fiber-reinforced thermosetting composites. Intelligent temperature control guarantees precise heating rate, ideal for plastic raw material incoming inspection and formula development in plastic factories.

Does your pipe pressure burst testing machine control test temperature automatically? What’s its main application?

Yes, the constant-temperature circulating system keeps stable test environment during long-time hydrostatic resistance and instant burst pressure measurement of thermoplastic pipes. It complies with GB6111 standard and serves raw material inspection, new product R&D for plastic pipe manufacturers, third-party testing labs and university laboratories.

What kinds of pipes fit your ring stiffness tester? Can it do long-term creep testing?

This equipment is designed for HDPE, PVC corrugated pipes, plastic drainage pipes and various plastic tubular products. Apart from ring stiffness, ring flexibility and flattening tests, it supports continuous long-term creep tests up to 1000 hours (42 days) as required by industry specifications, widely used for pipe factories and construction quality inspection institutes.

What test items can your WDW series computer-controlled electronic universal testing machine complete? Which international standards can it meet?

Our WDW universal tester is applicable for tension, compression, bending, shearing and peeling tests of metal, plastic, rubber and composite materials. It supports test procedures in accordance with GB, ISO, ASTM, DIN, JIS multiple domestic and global standards. Equipped with high-precision servo drive and dedicated test software, it automatically collects, calculates and exports test data including tensile strength, elongation at break and elastic modulus.

Customer Reviews

Southeast Asia Rubber & Polymer Factory｜Purchase: Vicat Softening Point & Tensile Testing Machine

From Tanaka Hiroshi, R&D Supervisor, Indonesia rubber materials enterprise

2026.06.05

★★★★★

“Laibote’s Vicat softening point tester and electronic tensile machine have been applied to our raw material incoming inspection and new formula development for over one year. High testing accuracy effectively controls our product defect rate. What impresses us most is their responsive after-sale service; technical staff reply our troubleshooting requests within 24 hours even for time zone differences. Compared with expensive European brands, Laibote’s equipment balances quality and price excellently, we plan to expand procurement of auxiliary testing instruments next quarter.”

Middle East Construction Lab｜Purchase: Universal Electronic Testing Machine & Geotextile Test Equipment

From Mohamed Kareem, Lab Manager, UAE third-party construction inspection institute

2026.06.05

★★★★★

“We compared multiple testing equipment brands from Europe and China before cooperating with Laibote. Their WDW universal tester and full-set geotextile testing instruments meet local construction testing standards perfectly. Custom fixtures tailored per our specimen specifications save much testing time. Pre-sale technical communication was patient and professional; engineers provided online operation training after goods arrived. Stable machine performance greatly improves our laboratory’s detection efficiency, we are satisfied with cost performance and overall service.”

European Plastic Pipe Manufacturer｜Purchase: Ring Stiffness & Hydrostatic Burst Tester

From Thomas Bennett, Quality Director, UK plastic pipe factory

2026.06.05

★★★★★

“We have purchased two sets of pipe testing equipment from Laibote (Tianjin) for 18 months. The ring stiffness and hydrostatic burst testing machines run stably for daily batch inspection, test data matches ISO standard requirements precisely, and the intelligent test software is easy for our operators to master. Their after-sales team offers timely remote technical guidance whenever we have operational problems, spare parts supply is efficient. We have arranged a second bulk order for our new production workshop and will recommend Laibote’s testing machines to our industry partners across Europe.”

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