Cangzhou Huayun Experimental Instrument Co., Ltd.

Heidi Cangzhou Huayun Experimental Instrument Co., Ltd. is a professional manufacturer of concrete pressure testing machines, providing users with high-quality, standard cement testing instruments, concrete testing instruments, construction instruments, and highway instruments. Welcome to inquire about the price of concrete pressure testing machine.
Instructions and maintenance of black body concrete pressure testing machine
Hei body 1. Main uses and functions of concrete pressure testing machine
Hei body is mainly used for compression resistance of building materials such as bricks, cement mortar and concrete. Strength testing can also be used to test the mechanical properties of other materials.
Heibo This machine adopts hydraulic loading, electronic force measurement, has functions such as digital load display, maximum load holding, and power-off data protection. The test data is automatically processed and the test report is printed out. Main technical parameters
Blackbody 2. Technical parameters
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Blackbody maximum test force
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Blackbody range and measurement range
Blackbody~
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Relative error of black body indication value
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Black body pressure plate size
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Black body upper and lower Maximum distance between pressure plates
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Black body piston maximum stroke
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Black body piston diameter
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Black body< br/> Black body hydraulic pump rated pressure
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Black body power supply
Black body three-phase
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Black body dimensions (length*width*height )
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Black body net weight
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Black body 3. Main structure of pressure testing machine
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This machine is mainly composed of a host machine, a hydraulic system and a force measuring unit.
Black body,
Host machine
Black body is mainly composed of upper beam, column, adjusting screw and handwheel, pressure-bearing plate, oil cylinder and piston. There is a movable ball seat between the end of the screw and the upper pressure plate. During operation, when the bottom surface of the upper pressure plate contacts the top surface of the specimen, it can automatically adapt to the slight inclination in the height direction of the specimen, so that the two planes are in full contact with each other, thereby making the specimen Even by force. According to the size of the test piece, the handwheel and screw can be turned to appropriately adjust the test space.
The top surface of the blackbody lower platen is engraved with a positioning wire frame to facilitate placing the specimen in the center.
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Hydraulic system
Black body is composed of hydraulic pump, oil delivery valve, oil return valve, oil tank, oil filter and oil pipe.
The black body hydraulic pump is an axial five-piston ultra-high-pressure pump, driven directly by an electric motor. The oil delivery valve is equipped with a safety valve, which can overflow when overloaded, which plays a safety role. By operating the handwheel of the oil delivery valve, the amount of oil in the oil cylinder can be adjusted to achieve the required loading rate. Opening the oil return valve allows all the oil in the oil cylinder and the oil pump to flow back to the oil tank.
Black body,
Force measuring unit
Black body mainly includes measurement and control system, printer and pressure sensor. (For details, please refer to the attached "Intelligent Force Tester Instruction Manual"
Height,
The electrical system consists of a motor, a start button, a stop button, an AC contactor, a fuse, etc.
Height 4. Installation and debugging of pressure testing machine
Black body
The machine should be installed horizontally on a stable foundation with a level of For the scope and passage, the four anchor screws (*) should use secondary grouting to ensure the accurate buried position of the bolts. See the installation foundation diagram for the foundation plane of the machine.
The machine in black body should be surrounded by no corrosive media and no vibration. When used under certain environmental conditions, the fluctuation range of the power supply voltage should not exceed the rated voltage. The electrical equipment of this machine should have a grounding safety protection device. Because of the use of hydraulic oil, safety and fire prevention measures should be taken around it.
After the black body machine is stable, place it The measurement and control system is securely placed on the corresponding part of the top of the right box, and then the sensors and wire sockets are connected respectively.
5. Precautions for the use and operation of the pressure testing machine
Bold body,
Before use You should first check whether the oil in the tank is sufficient. You can check the oil mark on the right side. If it is insufficient, open the rear tank panel and add more oil into the tank until the liquid level is at the oil mark.
Black body,
Check whether the oil filler joints and fasteners are loose, and tighten them if they are loose. Check that the dust cover should be intact. Check whether the electrical grounding, fuses and other safety protection measures are effective.
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When using it for the first time, you should first open the oil return valve, close the oil return valve, turn on the power, press the start button, the oil pump starts to work, then close the oil return valve, slowly open the oil delivery valve, and the piston rises. a certain distance to see if there is any jamming. If so, unload the machine, stop the machine for inspection, and eliminate it. Open the oil return valve, and the piston will drop to its original position.
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Place the test piece Wipe the surface clean and check whether there are obvious defects in the appearance. If there are any obvious defects that can affect the test values, the non-destructive test piece must be replaced.
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Place the lower platen positioning wire frame of the test piece in the center of the lower platen, and press According to the size of the test piece, turn the hand wheel and screw to adjust the upper pressure plate to the appropriate position.
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Turn on the power supply of the measurement and control system (the switch is behind the measurement and control box), and follow the operating steps to clear the zero and modify the clock. Wait for the input of relevant data.
Hell body,
Press the start button, close the oil return valve, regulate the oil delivery valve, and conduct the loading test smoothly at the required rate until the test piece is crushed and the load decreases . Then open the oil return valve to allow the oil to quickly flow back to the tank.
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At the end of the test, press the print button on the panel. The printer will print out the test report.
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During operation, the lifting height of the lower pressure plate must not exceed (or the marking line on the column) to avoid accidents.
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It is prohibited to place any part of the human body, such as hands, between the upper and lower pressure plates during operation. time, and pay attention to the fragments falling out and injuring people when the test piece is broken.
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Immediately after the test, remove the broken test block for the next test. When testing is no longer required, open the oil return valve, close the oil delivery valve, and cut off the power supply.
Heibo 6. Maintenance and oil use of pressure testing machine
Heibo and the inside and outside of the testing machine should always be kept clean to prevent corrosion of various parts.
Black body, check regularly whether the oil is clean or not. Generally speaking, the precipitated oil in the fuel tank needs to be drained from the oil drain port at least once a week, and the amount depends on the degree of oil pollution until there is no dirt in the drained oil. Frequent users should remove, inspect and clean the oil filter once a month. If the dirt is severely clogged or damaged, the oil filter must be replaced.
When using black body and frequent use, the oil needs to be changed every six months. At the same time, thoroughly clean the fuel tank, oil filter and oil filter screen with kerosene. Repeat this several times until it is clean, then wipe the bottom of the box with a towel, and then fill it with clean oil. If it is found that the oil is too turbid and cannot be used anymore, it should be replaced immediately.
Blackbody and hydraulic oil specifications vary depending on the test room temperature. The recommendations are as follows
Blackbody When the room temperature is lower than ℃, use anti-wear hydraulic oil (its viscosity is equivalent to the old grade)
Blackbody When the room temperature is higher than ℃, use anti-wear hydraulic oil (its viscosity is equivalent to the old brand)
black body. When not in use, the machine should be covered with a plastic cover.
Blackbody 7. Troubleshooting
Blackbody serial number
Blackbody failure phenomenon
Causes of blackbody generation
Blackbody troubleshooting methods
Blackbody
Blackbody oil pump does not pump out Oil
There is air in the blackbody oil pump
The blackbody oil filter is clogged
The blackbody oil inlet and outlet valve seat is worn, or has dirt, and the fit is not tight.
Blackbody loosen the high-pressure oil outlet pipe joint and discharge the air
Blackbody cleans the oil filter
Blackbody cleans, repairs or replaces the corresponding parts.
Black body
Black body oil cylinder overflows seriously
Black body oil viscosity is too thin
Black body oil cylinder rubber sealing ring is damaged
Black body piston and oil cylinder clearance is too large.
The black body increases the oil viscosity
The black body replaces the rubber sealing ring
The black body replaces the white sealing ring.
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Black body strength value cannot reach the maximum
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The oil delivery valve core and bushing are stuck or there is dirt
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Send The front sealing ring of the oil valve bushing is damaged
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The spring force of the oil delivery valve is too weak
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The oil return valve needle does not match the valve port
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The clearance between the oil cylinder and the piston is too large
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Oil leakage from the oil pipe joint.
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Clean or grind the corresponding parts
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Replace the sealing ring
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Replace the spring or add an appropriate washer to its end face
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Close the valve needle and valve port
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Replace the white sealing ring
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Tighten the oil leakage joint.

Bold type operating procedures (type)
Before use, you must check whether the oil storage tank is full and whether the oil pipe joints are loose to prevent oil leakage.
Replace the corresponding spring according to the sample requirements. Use a small spring when the tonnage is small to ensure correct readings.
, turn the handwheel and adjust the screw to the appropriate position.
Tighten the oil return valve
Start the oil pump, adjust the oil delivery valve to float the oil plug, correct the zero point of the pointer, turn the knurled nut, and adjust the arc until the pointer coincides with the dial line.
, control the oil delivery valve and pressurize it at the required speed.
If the pressure continues and the active pointer begins to retreat and the pointer reading no longer increases, it means that the specimen has been pressurized to its ultimate strength. Slowly withdraw the oil return valve to allow the oil in the oil pump to return to the oil storage tank. Inside.
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