I. Overview     

SGB620 / 40T scraper conveyor is mainly used for conveying coal in the coal mining face of the gently inclined thin coal seam and Zhongyuan coal seam below the coal mine. This product has the characteristics of strong transportation, stable transmission, simple structure, convenient assembly and disassembly, easy maintenance, safety and reliability. Its type, size and main technical performance conform to MT / T105-93 "Types and parameters of mining scraper conveying models. "Provisions.

Second, the main technical characteristics of Table I                                               

Third, the structure and performance of the main parts     

1. Overall structure: This product is mainly composed of transmission part, moving beam, transition groove, middle groove, scraper chain, tail, left and right baffle and other components. (Figure 1)

2. Structure and working principle of main components

Transmission section: The transmission section (Figure 2) is mainly composed of motor, reducer, sprocket, headstock, tongue plate, blind shaft, chain tensioner and other components. The coupling cover connects the motor and reducer into a whole, and the power passes The reducer is transmitted to the sprocket, and the sprocket drives the scraper to form a closed stepless transmission chain, which plays a role in transporting coal.

3. Reducer: The reducer (Figure 4) is a three-stage conical cylindrical gear transmission with a transmission power of 40kw and a transmission ratio of 24.564 . In order to ensure the normal operation of the bearing, the axial clearance of the bearing should be appropriately adjusted: the *** axis is 0.04--0.1 ; the second axis is 0.08-0.15 ; the third axis is 0.07-0.15 ; the fourth axis is 0.2-0.4 The axial position of the arc bevel gear should also be adjusted appropriately to ensure a reasonable meshing backlash and contact spots, the meshing backlash is not less than 0.17mm , and the contact spots are not less than 50% in the direction of tooth length and tooth height .*** The axial clearance of the shaft can be adjusted by adjusting nut, and the axial clearance of the second, third and fourth shaft can be adjusted by adjusting pad.

4. Sprocket: The sprocket (figure 5) is composed of a half roller, which transmits power to the scraper chain.

5. Headstock: The headstock is assembled by welding the side plate and bottom plate and other parts, and its side is used to fix the reducer and the blind shaft assembly, and the tail end is connected with the transition groove.

6. Blind shaft: Blind shaft (Figure 6) is composed of bearing seat, blind shaft and other parts. Its main function is to support the sprocket.

7. Chain tensioner: The chain tensioner (Figure 7) is composed of eccentric wheel, housing, brake band, brake wheel and other parts. The brake band is used to hold the brake wheel to achieve braking, and it is used in conjunction with the tight chain hook (Figure 7). Eight), play the role of tensioning the scraper chain.

8. Transition groove: The transition groove is formed by welding the groove steel and the middle plate, and it is the transition connection device of the headstock and the middle groove.

9. Middle groove: The middle groove is an important part of the scraper conveyor. It is formed by welding the groove steel, the middle plate, and the connecting pin. The middle groove and the middle groove are longitudinally connected by the connecting pin.

10. Scraper chain: The scraper chain (Figure 9) is assembled by a ring chain, a scraper, a connecting ring, and bolts. The scraper material is rolled steel, and the side with the inclined surface is in contact with the middle slot middle plate. It plays the role of scraping coal, and the convex part of the connecting ring plays a guiding role.

11. Tail: The tail (Figure 10) is assembled by the tail frame and the tail shaft (Figure 11). It is a guide mechanism for the rotation of the scraper chain. It is also possible to use a double drive method, that is, the head and tail are transmission parts, which can increase the laying length of the whole machine to 160m .

Note: When using dual drive mode, only one set of electronic control device can be shared. Turn the head and tail transmissions to the same direction before turning on the power. Otherwise, accidents such as breaking the scraper chain or damaging the transmission will occur.

12. Left and right baffles: Scraper conveyors are generally not equipped with left and right baffles when they leave the factory. Special orders can be made if required by the user.

Fourth, installation and adjustment

1. Installation: Before installation, the installer must read the instruction manual of this product, understand the structure and working principle of the conveyor, and be familiar with the installation procedures. After the product is shipped to the underground for installation, the bad parts must be repaired, and those that cannot be used must be replaced. After inspecting and confirming that all components are complete, they are transported to their respective installation sites downhole. The installation site is level and free of debris such as wooden boards and stones. When the inclination of the installation ground is greater than 7 degrees, the laying length should be shortened accordingly.

2. Install the transmission part: Connect the headstock and the moving beam at the installation site, and maintain a certain unloading height between the headstock and the trough conveyor. When installing the reducer on the side plate of the machine head frame against the coal mining space, the neck of the sealed casing of the fourth shaft of the reducer must match the support hole of the machine head frame, and the side key grooves match the guide keys of the side plate of the machine head frame Note that the vent plug should be on the top of the reducer. And install the connection cover, the motor in order. Install the machine head sprocket on the output end of the fourth shaft of the reducer, and install the blind shaft on the other end of the machine head sprocket. The transmission must be placed horizontally and not inclined. After the installation is completed, the reducer is filled with GB / T5903 industrial closed gear oil to ensure lubrication, and the injection amount is immersed in 1/3 of the large shaft arc bevel gear . There must be no leakage at each seal.If conditions permit, the whole transmission can be transported to the underground installation site.

3. Installation of the scraper chain: The installation form of the scraper chain should meet the requirements of (Figure 9), and ensure that the welding position of the ring chain and the convex part of the connecting ring are upward when the groove runs in the middle groove. When running on one side, it is in contact with the middle plate of the middle tank. The fastening bolts of the connecting ring must be tightened, and twisting of the ring is not allowed.

4. Install the transition groove and middle groove: put the scraper chain under the transition groove, and don't twist it. One end of the scraper chain passes out of the head frame through the bottom plate of the head frame, and the extended length should be able to ride on the head sprocket groove. The transition groove is connected to the headstock and connected to the middle groove in turn. The adjacent middle grooves should be as straight as possible to ensure that the horizontal and vertical bending is not greater than 3degrees. A scraper chain is placed in the middle groove.

5. Install the tail: the tail is connected with the middle groove of the last section of the machine, and the scraper chain is put around the tail sprocket and placed in the upper and lower grooves.

6. Tensioning the scraper chain: After the whole machine is laid, the scraper chain should be tightened. When tightening the chain, insert one end of the two tight chain hooks into the circular holes on the left and right side plates of the rack, and insert the other end on both sides. In the vertical ring in the symmetrical position of the round chain, drive the car in reverse, turn the loose chain to the machine head, and immediately hold the brake wheel immediately after stopping. After braking, you can remove the excess chain and dock the round chain. Remove the tight chain hook, and then move the eccentricity to the released position, so that the brake belt and brake wheel can be disengaged to operate normally. The tightening degree of the round chain is suitable to have a sag below the head sprocket during operation. Note: When tightening the chain, the reducer must be in a safe stop state, and the chain tensioner plate rod must not be loosened, otherwise, an accident may occur.

7 , installed to deal with full installation inspection machine

检查 Check that the oil quantity of the reducer should meet the requirements

⑵, check the power switch and wiring, should be accurate (see the switch, motor manual)

(3) Check the tension of the scraper chain installation. It should meet the above requirements.

⑷ After all inspections are done correctly, a dot is placed on the beam at the transmission part, and a steel wire rope is attached to the tail steel pipe for fixing.

8. Adjustment: According to the inspection in 4.1.6 , perform the no-load running test in the forward and reverse directions. There should be no scratches and skipping. If problems are found, adjust them in time to ensure normal operation.

Five, maintenance

1. The operator should operate according to the instruction manual.

2. Make sure that the oil filling amount specified in the reducer is free from leakage at each seal.

3. The coal should be loaded first and then loaded without starting with load.

4 , pay attention to check the tension of the scraper chain, find that the chain should be changed in time.

5 , pay attention to check each connecting bolt, should be complete without loosening, especially the reducer closing box bolts, reducer and connecting cylinder connecting bolts, connecting cylinder and motor connecting bolts, scraper chain bolts and so on. If any shortage or looseness is found, it should be filled and tightened in time.

6 , often clean the floating coal at the nose, so as not to bring into the lower tank and increase resistance.

7. Always pay attention to the working condition of the reducer. If abnormalities such as excessive noise, high temperature rise and oil leakage on the sealing surface are found, they should be handled in time. During maintenance, each maintenance site shall be adjusted according to regulations.

8. Lubricate the lubrication parts regularly.

注 Oiling during the maintenance of the reducer bearing ( GB / T492 sodium base grease)

⑵ The gear lubricating oil in the box is replaced every three months, and the injection amount is 1/3 of the immersed large arc bevel gear ( GB / T5903 industrial closed gear oil)

(3) Oil filling during inspection of motor bearings ( GB / T492 sodium-based grease)

⑷ Reducer *** Shaft bearings are lubricated once a month ( GB / T492 sodium base grease)

⑸, Blind shaft bearings are lubricated once a month ( GB / T492 sodium base grease)

⑹The machine's tail shaft bearing is lubricated once a month ( GB / T492 sodium base grease)

Six, failure analysis and elimination (see Table 2)

7. Transportation and storage

1. Do not load or unload horizontally during hoisting and transportation. Important components such as transmissions and tail assemblies should be placed horizontally. No other parts should be stacked on top of them to avoid collision. Precision parts such as reducers, motors, etc. should be placed stably. Collision damage during loading and unloading is strictly prohibited. The middle slot and scraper chain can be placed separately, but they must be tied tightly.

2. Avoid rain and snow during storage to avoid open storage.

Unpacking and inspection

When checking the goods, check them one by one against the packing list. If there are any defects, please contact the supplier in time.

1. The company aims to meet the user's expectations to the utmost extent, and implements a full-track tracking service for the product. It can assist in installation and commissioning according to user needs, provide accessories in a timely manner, and carefully deal with quality problems during use and assist in maintenance. To meet user requirements.

2. Commitment to quality: The product has a warranty period of six months from the date of shipment.

                      Failure analysis and troubleshooting table two