SAJ防坠安全器英文说明书

A.Introduction
SAJ serials pinion and cone progressive safety device is the most important safety component of builders hoist, which can prevent cage running over speed and effectively decrease the probability of cage dropping accident.
The safety device developed by Shanghai Research Institute of Building Sciences has passed through the identification, which is presided by the Ministry of Construction in 1989. Experts attending the meeting made a high appraisal of the safety device, because of its reasonable structure, high precise processing, stable tripping speed, safety and reliability, braking smoothly and light weight etc. The device was recommended as high-tech products by the Ministry of Construction in National “Eighth Five Year Plan” and also won the Excellent New Products Achievement Award of Shanghai Municipality
B.Main technical performance parameters and installation dimensions Parameter List refer to The Table One and Fig.1(page two and page three)
Declarations of Table One
1.Five models of safety device with no release device,
SAJ02-1.2, SAJ08-1.2, SAJ30-0.5, SAJ30-1.2, SAJ30-1.4.
2.Five models of safety device engaged with two transition gears,
SAJ40-2.0, SAJ50-2.0, SAJ60-1.2, SAJ60-2.0, SAJ70-1.4.
3.L4 denotes the distance from gear center to pitch line of rack.
4.Z denotes tooth number of gear. m denotes gear modulus. The gear modulus of
SAJ02-1.2 and SAJ08-1.2 is 4 and 5. The others are 8.
5.Provide special gear shaft based on customer requirements.
6.When SAJ02-1.2 is transmitted by sprocket，the number of tooth and pitch is 12 and
21.
C.The installation of SAJ-type safety device
1. The installing bolts performance level is permitted not less than 8.8. When installing, they should be evenly tightened. SAJ02-1.2 use the bolt specification of
M10, SAJ08-1.2 use the bolt specification of M12, SAJ30-0.5, SAJ30-1.2,
SAJ30-1.2A and SAJ30-1.4 use the bolt specification of M14, the other type safety device use the bolt specification of Ml6.
2. The safety device should be checked after installation. The backlash between the safety device’s gear and the rack of SAJ02-1.2 and SAJ08-1.2 should be held 0.3 ~ 0.7mm.The other type is 0.5~0.8mm.
3.The closed limit switch of safety device must be accessed to the lift’s control circuit, otherwise it will cause serious consequences.
D.Drop test and recovery
The safety device is required to take drop test according to the standard of builders hoist.
1.Drop test steps(for reference only)
The following method is for reference only. Specific operation is subject to the instruction of builders hoist.
1)Switch off the main power supply and turn the electric cabinet switch to
“INSTALLATION OVERHAUL” location.
2)Install test cable and connect it to the wiring base with “DROP TEST” mark in
the cage electric cabinet.
3)Fix the test cable near to the cage electric cabinet, put operation box and
remaining cable onto the ground through door or other suitable hole. Make sure that the cable will not be jammed while the drop test is carried out.
4)Load rated weight in cage, turn on the main switch, push the “UP” button in
operation box, and drive the cage to 10 meter high from ground.
5)Push “DROP TEST” button and keep pressing, at this time release the
electric-magnetic brake, the cage should drop downwards. When
dropping speed reaches the tripping speed of the safety device, it would act immediately and stop the cage on the rail support. (Attention: If the cage drops to
3 meter high from ground, and the safety device does not stop the cage, tester should release the “DROP TEST” button to ensure that the electric-magnetic brake stops the cage.)
6)Disassemble the test cable and turn the switch to” NORMAL” location.
2.Recovery of the safety device
Except drop test, if the safety device acts, we should find out the reason, at the same time the followings should be identified:
1)Whether the brake works normally.
2)Whether the turbine pair and the coupling work normally.
3)Whether the guide rolling wheel and support rolling wheels work normally.
4)Whether pinion and the rack work normally.
5)Whether limit switch on the safety device works normally (the electric circuit
should be switched off through inspection).
After inspection, make sure that
three-phase power supply is cut off and
the safety device should be recovered
according to the following steps (as
shown in Fig.2).
Loosen screw 1, remove cover 2, and
loosen screw 3, use a special spanner and
pinch bar 4 to loosen copper nut 7 until
the end of pin 6 reaches the safety device
shell opened side plane (at this time
switch on the limit switch electric
circuit).
Assemble screw 3 and cover 2 (for end
release structure type safety devices, the
hood cover 9 should also be removed,
the bolt 8 shall be screwed by hand as far as possible, then use the special tool 4 to screw the bolt 8 for 30 degree angle and release a little, and mount the hood cover 9), turn on the three phase switch, lift the
cage to run upwards over 20 cm to recover the centrifugal block.
E.Cautions
1.Whether safety device is used or not, inspection should be carried out once a
year. It can be used only within the validity period after passing annual inspection.
2.Special attention: It is strictly prohibited to carry out drop test twice in 15
minutes for overheating.
3.The inspection is undertaken by the appointed department, Shanghai Research
Institute of Building Sciences Co. Ltd.
4.The user is not allowed to open safety device without permission, even lead
sealing. Otherwise the manufacturer would not take any responsibilities for any accidents.
5.The product guarantee period is one year (limited to domestic sales).
6.The safety device is an important protection device. According to standard
requirements, the effective use period is 5 years.
7.Special attention: To protect the interests of users, and to obtain timely and quick
after-sales service, please fill out the "package repair service card" and fax or mail to the company, or it may affect the speed of service response.
8.Special attention: Safety device must be lubricated regularly. Every 120 working
hours, we should inject No.2 lithium-base grease (GB7324-1994) from oil cup which is installed in the end surface of gear shaft. Furthermore, when using
SAJ40-2.0, SAJ50-2.0, SAJ60-1.2 SAJ60-2.0 or SAJ70-1.4 safety device, grease should be filled through oil hole on support shaft edge to lubricate transmission pinion bears.
9.Special attention: It is important to adjust the backlash between the safety
device’s gear and the rack properly. If the backlash is too small or too big, it will result in meshing interference, abnormal vibration and noise, and will even
damage the safety device.
10.Special attention: Manufacturer only takes the responsibility of transmission
pinions’ quality. The bear wearing and working noise caused by improper
installation and operation are not guaranteed to the after-sales service by
manufacturer.
11.Special attention: Without permission, the user could not adjust the location of
position limited structure and ping 4 in fig.2. After safety device taking action, at
first, the activation causes should be investigated, then the safety device could be
reused only after all the faults are fixed and safety device recovered based on the
above instructions. It is strictly forbidden that safety device keep operation
without correct recovery after action.
F.Contact Us
a. Warranty department: Science & Technology Development General Co. , Shanghai Research Institute of Building Sciences
Address, 4th Building, No.39, Shen Xu Road, Song Jiang District, Shanghai, China
Postal code,201612
b.Sales department Address:
Room 201, 4th Building, No.39, Shen Xu Road, Song Jiang District, Shanghai, China Telephone, (086) 21 6468 7425
FAX, (086) 21 6464 0712
c. After ser. department Address:
Room 202, 4th Building, No.39, Shen Xu Road, Song Jiang District, Shanghai, China Contacts, Shenjian, Wangchangjie, Luojingwei
Telephone, (086) 21 6469 7813
FAX, (086) 21 6464 0712
d.Inspection department of Safety Device Address,
Room 407, No.519, Shen Wang Road, Min Hang District, Shanghai, China
Contacts, Wanggangju, Tangcuihua.
Telephone, (086) 21 6468 5335
FAX, (086) 21 6468 5335。