Shandong Huajian Energy Equipment Co., Ltd. specializes in producing rewind and broken belt protection devices , Self locking device for broken and rewind , Broken and rewind detection device , Broken and rewind control box products 。 The operation standard can be observed, the quality and efficiency need not worry, the continuous surpassing, and the pursuit of perfection. Telephone:*** 。
I Product Introduction
Belt type Conveyor The belt rewind and broken belt protection device mainly includes the following parts: belt reversal detection device, counterweight ( Tension device) limit detection device, electric device, self locking device for rewind and broken belt, electric cabinet, etc. inverted The belt break detection device has the function of detecting the reverse and broken belt of belt conveyor, and also has the function of reverse and broken belt The action starts the emergency signal and display function. When the backstop fails or the belt breaks, under the drive of the electric device, Quickly lock the heavy and empty tape that slides suddenly after the tape is broken (or out of control), the same as triggered rewind The belt breaking self-locking device is more reliable than other devices. It is mainly applicable to the belt conveyor for upward transportation It is not suitable for belt conveyors with large inclination, large capacity and long distance and strong strength.
The self locking device for broken and reversed belt is a new scientific research achievement in the field of belt conveyor broken belt protection. It has become a better substitute for the eccentric wheel type belt breaking and belt rewinding self-locking device in the current market. The belt breaking and rewinding self-locking device has good positioning performance under normal conditions and will not cause misoperation. When catching the belt, the upper brake block and wedge brake block contact the belt surface, and the wedge brake block slides along the wedge groove, gradually reducing the distance between the two brake blocks and the belt, and finally clamping the belt.
Operating principle of rewind and broken belt detection device
The rewind and broken belt detection device is limited by three rewind detection devices at the head, middle and tail, and tensioning device Test composition. The tape reversal detection is installed at the head, middle and tail of the belt conveyor to detect the tape reversal, When the belt conveyor runs normally or stops, the belt rewind detection does not send out the start emergency signal signal. When the belt breaks After that, the tape slides down to drive the contact wheel of the detection device to reverse and send out the start emergency signal signal. Principle of broken belt detection device It is the limit on the tensioning device switch 、 Proximity switch After the action, send the start emergency signal signal to detect the broken belt accident. The proximity switch on the self-locking device is used to detect whether the self-locking device for rewind and broken belt operates. stay The working status of the rewind and broken belt device is displayed on the electric cabinet and the emergency signal signal for starting is output.
II Main structure and installation position
one , upper brake arm and upper brake block two . Stop bar three Rotating shaft four , Adjustment Bolt five Stop block six . Anti deviation vertical roll seven Wedge brake block eight Wedge chute nine , guide rail ten One way trigger roller eleven , torsion spring twelve , Limit steel plate thirteen Upper brake block fixing frame fourteen Adjusting bolt fifteen Mounting bracket
III Product pictures
IV Service conditions
one 、 Operating ambient temperature -10℃~ 40℃ ；
two 、 The gas concentration of underground transportation roadway must be within 1% following;
three 、 Rigid frame and hanging belt conveyor;
four 、 Belt width is 800~2000mm Upward belt conveyor;
five 、 Inclination of belt conveyor: a≥6°;
six 、 Groove angle of groove roller: ＜ 60° 。
V Operating principle and performance characteristics
one 、 Work structure:
Structure principle of self locking device for rewind and broken belt
In case of belt breakage or backstop failure Slide driven eccentric roll one When rotating, the drive device acts at the same time, and the brake beam five In force strong spring ten And itself Rotate to eccentric roll under gravity one Parallel position. Due to eccentric roll one The eccentric action of With eccentric rollers on both sides one The clearance of the tape gradually becomes smaller, and the sliding heavy section of tape is quickly caught and firmly fixed in the end.
two 、 Performance characteristics
（ one ） Wedge self-locking brake belt, without external power. The sliding force generated after the belt is broken is used as the brake driving force, so that the left and right wedge brake blocks automatically lock the sliding belt, without external power.
（ two ） The brake block is in contact with the belt surface, and the brake surface is large, without damaging the belt. The upper brake block and wedge brake block of the belt breaking and rewinding self-locking device are not in contact with the belt at ordinary times. When braking the belt, the belt is clamped between the upper brake block and wedge brake block, and is in contact with the belt surface. The brake surface is large, so the belt will not be damaged.
（ three ） The integral mounting bracket is strong and easy to install. The integral mounting bracket is adopted, and its strength is greatly increased compared with the split bracket. During installation, bolts are used to fix it on the belt intermediate bracket between two groups of rollers.
VI Main technical parameters
Basic technical parameters and dimensions
project | Basic technical parameters and dimensions |
eight hundred type | one thousand type | one thousand and two hundred type |
Conveyor width（ mm ） | eight hundred | one thousand | one thousand and two hundred |
One side braking width（ mm ） | one hundred and fifty | one hundred and fifty | one hundred and fifty |
Large running resistance（ N ） | four hundred | four hundred | four hundred |
Rated power（ KN ） | forty | forty | forty |
Overall dimension（ mm ） | 1436*380*694 | 1626*380 | 1783*380*845 |
Weight（ kg ） | one hundred and ninety-eight | eight hundred and fifteen | two hundred and twenty-three |
Basic technical parameters and dimensions |
one thousand and four hundred type | one thousand and six hundred type | one thousand and eight hundred type | two thousand type |
one thousand and four hundred | one thousand and six hundred | one thousand and eight hundred | two thousand |
one hundred and fifty | one hundred and fifty | one hundred and fifty | one hundred and fifty |
four hundred | four hundred | four hundred and fifty | four hundred and fifty |
forty | forty | forty | forty |
1974*380*903 | 2164*380*911 | 2384*380*964 | 2584*380*1005 |
two hundred and thirty-five | two hundred and fifty-seven | two hundred and seventy-nine | two hundred and eighty-nine |
Technical requirements for installation of self locking device for rewind and broken belt
Check whether the rack with broken belt self-locking device is deformed, and whether all welds are open, The idlers and brake blocks are flexible. Timely eliminate problems found.
It is strictly prohibited to throw and touch the self locking device of rewind and broken belt when carrying it, so as to avoid frame deformation and parts damage
Bad.
Each group of rewind and broken belt self-locking devices can be evenly arranged along the line, or according to the actual situation of the belt conveyor and The inclination angle is centrally arranged along the tape at a certain distance. (Refer to the configuration description)
The self locking device for rewind and broken belt shall be installed on the frame of the belt conveyor, which shall be straight, free from deflection and deformation. • When installing the self-locking device for rewind and broken belt on the rack, attention must be paid to: the rotation direction of the idler and the positive direction of the conveyor belt The direction of normal operation shall be consistent, and the rotation of each roll shall be flexible without blocking.
• The self-locking device for rewind and broken belt shall ensure the brake block after action six And eccentric roll one Parallel, brake shoe and eccentric The roll gap should be appropriate.
Installation of detection device
Broken belt detection device
Install limit switch on box type vertical weight tensioning device（ I Type) and proximity switch (type •. CJT80M-50N1 ) , see the installation diagram 。
Rewind detection device
Installation of each conveyor three Set of rewind detection device, one at the head, one at the middle and one at the tail, and rewind at the head The detection device is installed at the junction of the front section and the second section. Installation of central rewind detection device At the end of the third paragraph. The tail belt rewind detection device is installed at the tail of the conveyor. installation diagram THD046-ZP 。
Self locking device action detection
A proximity switch (model: JD-LJA30M-18N1 ) , see See Figure THD047-ZP Each proximity switch needs a junction box. The junction box shall be installed at the nearest Nearby the self-locking device to ensure that the cable attached to the proximity switch can be accessed.
three Electric control panel
The electric cabinet is installed on the wall corresponding to the installation position of the self-locking device, and the incoming line hole ruler at the bottom of the electric cabinet Inches 033mm , required for on-site use ①25mm The metal hose is connected with the box. Electric cabinet appearance See drawing for dimensions three 。
VII Installation, use and maintenance instructions
VIII Outline drawing of electric cabinet
one 、 Installation of belt breaking and rewinding self-locking device
The self locking device for belt breaking and rewinding is a serialized * * * product. The corresponding specifications are designed according to the model of the belt conveyor, and can be selected according to the belt width, groove angle and other parameters of the belt conveyor.
Use of belt breaking and rewinding self-locking device U T-bolt group or bolt is fixed and installed on the middle frame of belt conveyor (as shown in Fig two As shown in), there is no need to modify the conveyor, and the installation is very convenient and simple.
two 、 Installation spacing along the line（ m ）
The installation spacing varies with the belt width, belt strength, designed conveying capacity and inclination angle of the conveyor, and the belt break position has a certain randomness. Therefore, within the allowable range of its strength and under the condition of ensuring that the belt will not be torn when it is caught and braked, the load-bearing belt is generally 30~100m One set shall be installed, and the installation distance between the belt near the drive drum and the transition section with large angle shall be reduced according to the specific situation. The installation spacing is in the principle of dense at the top and sparse at the bottom, usually in front of the belt conveyor 120m, Spacing is 30m,120m The spacing shall be increased gradually later, and the larger spacing shall not exceed the length listed in Table I.
Table I; Large installation spacing on belt conveyors with different inclination angles（ m ）
Belt length（ N/mm ） | Belt width（ mm ） | Large installation spacing on belt conveyors with different inclination angles（ m ）
|
10°~20° | 13°~15° | 16°~18° | 19°~21° | ≧22° |
1000-5000 | eight hundred | ninety | eighty | seventy | sixty | fifty-five |
one thousand | eighty-five | seventy-five | sixty-five | fifty-five | fifty |
one thousand and two hundred | eighty | seventy | sixty | fifty | forty-five |
one thousand and four hundred | seventy-five | sixty-five | fifty-five | forty-five | forty |
one thousand and six hundred | seventy | sixty | fifty | forty | thirty-five |
one thousand and eight hundred | sixty-five | fifty-five | forty-five | thirty-five | thirty |
two thousand | sixty | fifty | forty | thirty | thirty |
three 、 Installation technical requirements
（ one ） Before installation, check the rack for deformation, the flexibility of each roller and binding block, and the one-way rotation direction that triggers the roller installation.
（ two ） In the underground, necessary preparations shall be made first. If conditions permit, pre installation can be carried out on the ground, and problems found shall be solved in a timely manner.
（ three ） It is strictly prohibited to collide violently when carrying the broken belt rewind self-locking device to avoid deformation of the rack and damage of parts.
（ four ） The belt breaking and rewinding self-locking device can be evenly arranged along the line or under the load belt according to certain rules.
（ five ） It is strictly prohibited to install at the convex crutch of the roadway along the line.
（ six ） The rack of the belt at the installation of the belt breaking and rewinding self-locking device shall be straight, free from deflection and deformation.
（ seven ） After installation, the trigger roller is not in contact with the bearing belt, but it ensures that the trigger roller can reverse and rotate flexibly when the belt is broken.
（ eight ） Wedge brake gate is installed vertically below the no-load side of the bearing belt, about 10mm After the upper brake block is released, adjust it vertically above the no-load side of the belt to make it about 15mm.
（ nine ） After installation and commissioning, it shall be ensured that the roller fluctuation locating claw can quickly slide down after triggering, and simultaneously drive the wedge brake block and the upper brake block to move synchronously.
four 、 Daily use and maintenance
（ one ） After the installation and commissioning of the belt break and rewind self-locking device is completed, the upper and lower brake blocks on the left and right sides do not contact the belt during normal use. When the belt break is caught, the wedge block slides within the set distance, and the upper and lower brake blocks gradually reduce the spacing to clamp the belt. The one-way trigger wedge line does not rotate along with the coal conveying direction of the belt. In case of belt breakage, reverse one circle in the opposite direction, reverse stop, press the positioning device through the linkage jaws at both ends of the roller shaft to make it separate from the positioning block, and the roller slides down. At the same time, the roller slides down in linkage with the wedge brake blocks at both sides, hitting the sliding plate, and the limit rod disengages from the limit plate, and the brake hip is released to complete the braking of the sliding belt.
（ two ） After the belt is broken and braked, it must be reset manually. The procedure is to set the hip plate up to the longitudinal direction parallel to the belt, and pull out the lever upwards（ Φ16 Yuangang), position the upper brake hip, reset the sliding wedge brake block, reset the limit plate and limit rod, press the screws on the shafts at both ends of the roller, make the positioning device of the roller clamp on the positioning block, put down the stop rod, and complete the reset.
In the case of belt replacement or debugging, in order to prevent the self locking device of broken and broken belt rewind from misoperation, the adjustment bolts (installed on both sides of the rack for standby when leaving the factory) can be fixed on the dust plates of the wedge brake blocks on both sides (holes have been reserved when leaving the factory) to prevent the wedge brake blocks from sliding down. After belt adjustment or replacement and before normal operation, remove the bolts and press the reset screws on the shafts at both ends of the roller to position the positioning device. At this time, the self-locking device for broken and broken rewind is in normal operation.
（ three ） The belt conveyor is equipped with a backstop, and the belt sliding distance shall not exceed 380mm （＜ Φ133 The circumference of the roller) is applicable to the self-locking device for belt breaking and rewinding. If more than 380mm , less than 760mm The sliding distance can be designed separately. Ensure that there is no misunderstanding.
（ four ） No matter the belt is broken or the belt slides due to normal shutdown, as long as the middle roller is reversed, due to the mechanical principle inside the roller, within the circumference of the roller, the forward and reverse rotation distances are the same. If the forward rotation exceeds any length of one circumference of the roller, the reverse rotation of the roller is close to one circumference.
five 、 maintain
（ one ） Due to the special underground environmental conditions, during the use of the belt breaking and rewinding self-locking device, regularly check whether the equipment screws are loose, whether the limiting plate, limiting rod positioning device and other parts are dislocated or not in contact, and whether the intermediate roller is flexible and backstop. Check whether the reset jaw and device are sensitive.
（ two ） Regularly clean up the coal slime, coal ash and coal lump accumulated on the equipment to ensure that the self locking device of broken belt rewind operates reliably.
（ three ） The user shall install a cleaner on the return belt to prevent slime and coal from sticking to the belt and affecting the sensitivity of action.
（ four ） During the normal operation of the belt conveyor, according to the actual operation, a test shall be carried out every quarter. The backstop can be removed and a simulation dating test can be carried out to check whether the action of the self locking device for broken belt and broken belt rewind is sensitive and reliable. If any problem is found, corresponding measures shall be taken to deal with it.
（ five ） Regularly check the spacing between the upper and lower brake blocks and the belt, and adjust if the corresponding spacing cannot be reached. Operation fault analysis and handling methods are shown in the table below:
fault | reason | Exclusion method | remarks |
Roller rotation failure | one There is too much coal dust on both sides of the rotating roller two Loose support three Roller bearing damaged four Overrunning clutch damaged | one Remove ash deposits two Fastening bracket three Replace bearing four Replace the clutch | |
Roller action but capture failure | one Brake shoe and brake band are damaged two Setting screws fall off or loose three The fluctuation mechanism is damaged | one Replace the brake band two Install and adjust the set screw three Adjust fluctuation mechanism | |
Part of the swing mechanism of the upper brake fails | one There is too much coal ash between the beam and the support two Coal ash entering the shaft, lubrication failure three The nut is too tight or loose four Each joint point of open mechanism is rusted | one Clean coal dust two Clean and grease three Adjusting nut tightness four Clean and grease | |
Wedge brake refuses to operate | one There is too much coal dust inside the wedge brake two Roller sleeve shaft rusted and damaged | one Remove ash deposits two Clean or replace | |
IX Auxiliary link
one 、 Transportation and storage can be carried out in various ways:
The products shall be stored in an airy and dry warehouse and stacked in order.
two Accompanying documents
One copy of operation manual and one copy of factory inspection certificate
three 、 after-sale service
The after-sales service technical agreement and contract are the criteria to ensure the replacement of damaged parts within one year, and problems occur twenty-four Give a reply within hours, and rush to the site to solve problems if necessary.
After the arrival of goods, the consequences of damage caused by human factors, such as damage during handling, improper storage and other abnormal conditions, have nothing to do with our company.
X Safety precautions
one When checking, adjusting and replacing parts, the machine must be stopped and the power must be cut off:
two The number of belt breaking and rewinding self-locking devices installed on the conveyor should reach the number calculated by the supplier or the average spacing along the belt breaking and rewinding self-locking devices (in the table)（ m ）The determined quantity, otherwise, the reliable protection effect will not be guaranteed.
