Tractel blocstop BSO 1020 Manual de usuario
BSO 1020 & BSO 1030
blocstop®
Service & Maintenance Manual
for Overspeed Brake
Date: 8/31/05
Version: 1
The Blocstop overspeed device is crucial and
MANDATORY for safe operation of the Tirak
machine. Therefore, an authorized repair station
must service it at least twice per year. The
following service recommendations may need to
be repeated more frequently depending on the
type of work environment.
2
WARNING
NEVER OPERATE THE TIRAK WITHOUT A
SECONDARY BRAKE!
THE BLOCSTOP SAVES LIVES!
Symbol Code Word Meaning Possible consequence
of non-compliance
WARNING IMMEDIATE or possible imminent
danger Fatal or serious injury!
CAUTION Possible danger situation Minor injuries to persons!
NOTE Possible danger situation Damage to equipment or
it's surroundings
N/A Instruction for documentation in
writing (i.e record keeping) N/A
Explanation of Symbols used in this manual
- Pin punch 5mm
- Allen key 5mm
- Flat screwdriver
- Vise
- 10mm Box wrench
- Special BSO tool (#20887)
- Measuring rod 9mm (#34415)
- or Measuring rod 10mm
- Hammer
- Caliper (micrometer)
- Needle nose pliers
- Needle nose Vise-grips
- 3 ft. 9mm test wire rope (1020)
- or 3 ft. 10mm test wire
rope (1030)
Tools Required for service and maintenance of Blocstop BSO 1020 & BSO 1030
1) SERVICE AND MAINTENANCE
1-1 Blocstop Removal
1-2 Clamping Jaw Test
1-3 Trigger Speed Check
1-4 Disassembly of the Control Compartment
1-5 Counterweight Adjustment & Repair
1-6 Disassembly & Service of the Jaw
Compartment
1-7 Jaw, Frame & Cam Removal
1-8 Roller Assembly Inspection
1-9 Counterweight Assembly Replacement
1-10 Reassembly of the Jaw Compartment
1-11 Installation of the Roller Assembly
1-12 Installation of the Pressure Spring
& Guide Tube
1-13 Casing Cover Installation
1-14 Preliminary Operational Test
1-15 Installation of the Counterweight Cover
1-16 Final Testing
2) EXPLODED VIEW AND PARTS LISTS
Parts Lists
Exploded View
3) TECHNICAL SHEETS
T-235, Checking and Maintenance
3
TABLE OF CONTENTS: Blocstop BSO 1030
Page
4
4
4
5
6
7
9
11
12
12
14
16
17
17
18
19
20
21
22
NOTE:
Any part #, position # (pos.) or page #'s
shown in "{ }" refer to the Parts List / Drawing
in the Spare Parts Lists included at the back
of this manual.
1) SERVICE AND MAINTENANCE
1-1 Blocstop Removal
Detach the Blocstop from the hoist by removing
the two cotter pins and mounting straps as shown
in Figure 101.
1-2 Clamping Jaw Test
1) Open the Blocstop and insert the measuring
rod (#34415) as shown in Figure 102.
2) Close the Blocstop by pressing the orange
emergency stop button which clamps the
jaws on the measuring rod.
3) Try to remove the measuring rod from the
Blocstop while the jaws are
engaged (Figure 103).
4) If you can pull the rod from the Blocstop
without twisting and turning, the jaws may
require replacement.
1-3 Trigger Speed Check
1) Open the Blocstop by pushing down on the
handle.
2) Insert the 9mm (1020) or 10mm (1030) test
wire rope through the entry bushing.
Continue until the rope exits the exit
bushing.
3) Hold the wire rope flush against the top of the
Blocstop entry bushing. Alternatively, you
can place a piece of tape around the wire
rope at its' entry to the Blocstop (Figure 104).
4) Release the Blocstop and allow it to free-fall.
Measure the distance between the entry
bushing and the tape or where your gloved
hand held the wire rope. The Blocstop jaws
should clamp on the wire rope with a travel
distance of 3-4 inches (See Figure 105).
5) If this distance is not 3-4 inches the triggering
speed must be adjusted as outlined in
Section 1-5.
4
Figure 103
Figure 101
Figure 102
Figure 104 Figure 105
CAUTION
Do not perform this test over your feet!
1-4 Disassembly of the Control Compartment
1) Before opening the Blocstop, the spring
tension must be reduced by pressing the
orange emergency stop button (Figure 106).
2) Inspect the handle {pos. 4, #41855} for
wear or damage. Ensure that there is no play
between the handle and the shaft {pos. 2,
#35147}. It must be tight without play. With
a 5mm pin punch, drive out the roll pin {pos.
74, #36786} as shown in Figure 107.
Replace any damaged parts.
3) Remove the (3) M6x60 casing screws
{pos. 75, #10166} and washers {pos. 79,
#36306} as shown in Figure 108.
4) Remove the casing cover {pos. 42, #18267}
to inspect the spring {pos. 72, #29446} and
cover for wear or damage. The spring should
be capable of compressing fully into the
brass cone without obstruction (Figure 109).
5) Inspect the centrifugal weights and the
release lever {pos. 3, #56235} for wear or
damage (Figure 110). Slight damage can be
filed, but you must inspect the air gap (0.4-
0.7mm) between the weights and release
lever upon completion (See Figure 111).
Replace any non-serviceable parts.
5
Figure 106
Figure 107
Figure 108
Figure 109
Figure 110
Figure 111
6) Inspect the handle release lever {pos. 1,
#39967} for wear, play or damage. Also
check the shaft of the jaw opening lever
{pos. 2, #35147} for bending or damage (See
Figure 112). Replace if necessary.
1-5 Counterweight Adjustment & Repair
1) If a slight adjustment (up to ¼") of triggering
speed is required, insert a screwdriver into
the white nylon eccentric screw {pos. 19,
#36475} on the counterweight system.
2) Carefully turn the eccentric screw to increase
or decrease the reaction time of the Blocstop.
A full revolution in either direction returns the
speed to its' initial setting.
If the correct setting cannot be obtained with the
eccentric screw, it may be necessary to replace
the pressure spring as follows:
1) Mark the nylon eccentric screw's {pos. 19,
#36475} orientation prior to removal to ease
adjustment after repair.
2) Begin by removing the white nylon eccentric
screw by pulling it vertically with pliers as
shown in Figure 113.
3) Remove the retaining clip {pos. 63, #33666}
as shown in Figure 114. Be careful not to
lose it.
4) Carefully disassemble the counterweight
spring assembly and replace the pressure
spring {pos. 62, #47615} (Figures 115 & 116).
6
NOTE:
If no service or repair is required, this section
should be omitted
NOTE:
4" IS THE IDEAL TRIPPING DISTANCE
(approx. 88 fpm).
Faster Tripping Speeds Require a Different
Tractel BSO Spring. Please Contact Tractel
for Further Information.
Figure 112
Figure 113
Figure 114
Figure 115
Figure 116
If the counterweights need replacement,
remove the two retaining clips {pos. 86,
#33656} and replace the left {pos. 20,
#38807} and right {pos. 25, #38817}
counterweights (Figure 117).
5) Reassemble in the reverse order being
certain all retaining clips are properly seated.
1-6 Disassembly and Service of the Jaw
Compartment
1) Install the Blocstop in the vise so the casing
is facing upward as shown. Remove the (2)
M6x50 casing screws {pos. 68, #12016} and
nyloc nuts {pos. 76, #7996} (Figure 118).
2) Carefully pry the casing cover open as
shown in Figure 119.
3) Remove the spring guide tube {pos. 53,
#36375} and pressure spring {pos. 80,
#29396} (Figure 120). Be careful not to lose
the washer {pos. 84, #7836} at the end of the
tube.
4) Remove the bearing {pos. 69, #10186}
and its' attached cover {pos. 31, #36525} as
shown in Figure 121 on the next page.
7
NOTE:
After completion of the service, the triggering
speed must be checked several times as
outlined in Sec. 6-1.4
CAUTION
Extreme caution must be used when opening
the cover as it contains springs under
tension. Most importantly, ensure nobody is
in the direction of the exit bushing.
Figure 117
Figure 118
Figure 119
Figure 120
5) Remove the (3) center bushings {pos.
55, #38565} and (2) distance bushings
{pos. 52, #36425} as shown in Figure 122.
6) There should be (1) washer (#9826, Pos.
11) on the top of each axle, for a total of 3
(Figure 125).
7) Remove the entry {pos. 12, #36415} and
exit {pos. 13, #33685} bushings and
inspect for wear Figure 126. Excessive wear
indicates incorrect rigging practices and
should be addressed with those persons
responsible.
8
NOTE:
The centering bushings have a long side
which serves as a guide for the casing cover
{pos. 42, #18267} (See Figure 123).
NOTE:
The adjusting washers are CRITICAL to the
proper operation of the Blocstop and must be
present!
NOTE:
Prior to the removal of the adjusting washers
{pos. 11, #9826}, verify that no washers
are stuck by grease to the casing cover as
shown in Figure 124.
Figure 121
Figure 122
Figure 123
Figure 124
Figure 125
Figure 126
1-7 Jaw, Frame and Cam Removal
1) Remove the top front {pos.8, #36235} and
rear {pos. 5, #825} cams paying attention
to their orientation (Figures 127 & 128).
Ensure that you remove both top adjusting
washers {pos. 11, #9826}. Clean and
replace if necessary.
2) Remove the spring guide bolt (Figure 133).
3) Disassemble the (2) anchor frames {pos. 28,
#36205} and (2) jaw frames {pos. 28,
#36205}. See Figure 134. The washers may
still be stuck to the frames after removal.
Clean and replace if necessary.
9
NOTE:
The cams are installed correctly if you can see
an “S” in them. See Figures 129-132
NOTE:
Occasionally the washers stick to the cams and
frames upon removal.
Figure 127 Figure 128
Figure 129
Figure 130
Figure 131
Figure 132
Figure 133
Figure 134
4) Remove the upper {pos. 6, #36245
(BSO 1020) or #45375 (BSO 1030)} and
lower {pos. 7, #36255 (BSO 1020) or #45385
(BSO1030)} jaws, paying attention to their
orientation (Figure 135). The dovetail
is on the entry side of the unit and help guide
the wire rope into the system correctly. Clean
the jaws thoroughly.
5) The jaws of the Blocstop are heat treated and
stamped with the correct wire rope
diameter. Ensure that the markings
correspond to the wire rope you are using
(Figure 136). If replacement jaws are being
installed, ensure they correspond as well. For
example, BSO10 indicates a special 10mm
dia.
6) Remove the (3) axles {pos. 09, #36365} and
(1) anchor axle {pos. 56, #36225}. See
Figure 137. Unlike the centering bushings {
pos. 55, #38565}, the axles can be installed
with either end facing down.
7) Remove the lower cams {pos.8, #36235} &
{pos. 5, #825} and adjusting washers
{pos. 11, #9826}. See Figure 138.
10
NOTE:
Replacement of the jaws can be accomplished
at this time if they failed the measurement test of
Sec. 6-1.3 due to wear.
Figure 135
Figure 136
Figure 137
Figure 138
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