What protection does the EBZ135 TBM have, thank you?

There are two types of TBMs: open TBMs and shield TBMs. Open TBMs are divided into: single-support TBMs and double-supported TBMs; The Shield TBM is divided into:

Single Shield and Double Shield TBMs; Open TBM: mainly suitable for excavation of hard rock tunnels; Shield TBM: Mainly suitable for excavation of soft rock tunnels.

Shanghai Daqi Mine Electromechanical specializes in the production and sales of coal mine shearers (including open-pit shearers), roadheaders, conveyors and other equipment and accessories, and the specific contact manager 13916206820

1) All safety standard controlled accessories have obtained coal mine safety mark certificate;

2) The roadheader is equipped with a starting alarm device and front and rear lights;

3) The roadheader is equipped with a braking system and an anti-skid protection device;

4) The transmission system of the cutting mechanism and the shipping mechanism is equipped with an overload protection device;

5) The start and stop sequence between the oil pump motor and the cutting motor and the second transport motor has a locking device in the electronic control system;

6) The hydraulic system has Shandong Shenhua filter device, and is also equipped with pressure, oil temperature, oil level display and other protection devices;

7) the electronic control system is equipped with emergency cut-off and locking shenhua08 set, and the other side of the driver's seat is also equipped with an emergency stop button;

8) The roadheader is equipped with internal and external spray systems, and has filtration devices, water leakage detection and protection functions.

Undercover TBM is a common problem with TBMs! What is the cause of your consideration, the reasons are as follows: 1. The driver does not know enough about the model! Incorrect operation, coal collection and gangue more, resulting in undercover; 2；The slope of the roadway is large, the roadway is drenched, and the floor is soft and causes undercover; 3. The roadheader itself has problems, the system pressure is small, and it cannot effectively drive the roadheader, pump, motor, and operating valve to age; As a result, the roadheader can walk weakly, and it can walk on a flat hard floor, but it is easy to lie down if it is cutting coal.

The solution to this problem can be to replace the damaged original by replacing the replacement method and comparing the hair to eliminate the damage to improve the performance of the equipment; I am a driver and a maintenance worker, according to my analysis, generally under normal geological conditions (slope plus or minus 16 degrees, f = 60MPa) it is easy to lie down the reason is generally the problem of the equipment! You can observe the situation when lying down, 1: the pressure is normal, and the crawler does not rotate when the rated pressure is reached when the horizontal machine is horizontal, which is caused by the leakage of the general hydraulic control reversing valve; Solution: Replace the valve group; 2. If the pressure does not reach the rated value, the track will not turn!

There are two reasons for this situation, which are caused by damage to the general motor, and you can experiment with the crawler experiments on both sides separately to see which one has a problem! Another reason is that the system pressure is not adjusted properly, or there is a problem with the oil pump itself, you can adjust the pressure to try! See if you can solve the problem, if not, you can replace the oil pump!

Under normal circumstances, the track of the roadheader will be crushed to death, even if it is a horizontal machine, at least one side of the track will rotate is a normal equipment, if it will not turn, it is a problem with the equipment! In addition, Sany's roadheader is not easy to go undercover due to design problems, which is caused by the unreasonable design of the shovel plate, and the structural problems cannot be solved! This has increased the distance of the undercover agent, and slowly went undercover!

Hope it helps!

EBZ135 EBZ150A EBZ200 Hydraulic System Common Faults and Treatment 1. Fault phenomenon: Four-way valve monolithic slide valve card slot positioning failure.

Analysis cause: The retaining ring at the rear of the spool valve is damaged.

Solution: Replace the retaining ring for the shaft.

2. Fault phenomenon: the execution is normal, but the measured pressure is 0.

Analyze the cause: the pressure gauge is damaged.

Solution: Replace the pressure gauge.

3. Fault phenomenon: the operation of the valve stem is not sensitive, and there is a phenomenon of stuck and non-reset.

Analyze the reason: the internal oil is not clean or the external impurities accumulate too much.

Solution: Clean the valve stem or clean the external dust impurities.

4. Fault phenomenon: the actuator cannot reach the maximum pressure.

Reason for analysis: low set pressure of pressure limiting valve; Oil spills.

Solution: Readjust the pressure setting pressure of the pressure limiting valve.

5. Fault phenomenon: the actuator on a certain oil circuit cannot reach the highest pressure.

Analyze the cause: leakage of shuttle valve.

Solution: Clean the impurities.

6. Fault phenomenon: the action of the actuator is too slow.

Reason for analysis: The flow rate of the spool is small.

Solution: Adjust the flow restriction stop at the handle base.

7. Fault phenomenon: when the second function is acted, the actuator (the first function) decelerates rapidly.

Analyze the reason: the flow rate of the pump is too small.

Solution: Check the flow rate of the pump.

8. Fault phenomenon: when the valve core moves in one or two directions, the actuator does not respond.

Cause: LS collection site is blocked.

Solution: Clean up the dirt at the throttle nozzle.

9. Fault phenomenon: the cooler core is bulging (inward).

Analyze the cause: the water pressure reducing valve fails, and the water pressure is too high.

Solution: Repair or replace the water pressure reducing valve.