Greenlee 8024 User manual

Download

Page 1

OPERATION, SERVICE AND PARTS

INSTRUCTION MANUAL

8012, 8018 & 8024

8,000 LB. CAPACITY

HOOK-TYPE CABLE SHEAVES

Read and understand this material before operating or servicing this sheave. Failure to understand how to safely operate this sheave could result in an accident causing serious injury or death. This tool should only be operated by qualified personnel.

999 2092.1

Find Quality Products Online at: [email protected]

www.GlobalTestSupply.com

Page 2

8,000 lb. Capacity Hook-Type Cable Sheaves

Purpose of this Manual

Hook sheaves are used to change direction of the pulling rope. This manual provides instructions of rigging hook sheaves and calculating the load on the sheave anchor point and supporting structures.

This manual should be kept available for operating and maintenance personnel. For additional copies at no

charge, order IM-1260 (Part Number 999 2092.1).

DANGER

Immediate hazards which WILL result in severe personal injury or death.

SAFETY ALERT SYMBOL

The symbol above is used to call your attention to instructions concerning your personal safety. Watch for this symbol. It points out important safety precautions. It means “ATTENTION! Become alert! Your personal safety is involved!” Read the message that follows and be alert to the possibility of personal injury or death.

Read and understand all operating and safety instructions before using these sheaves. Failure to properly set up and operate this system could result in an accident causing serious injury or death. This product should only be used by personnel trained in its operation.

W ARNING

Hazards or unsafe practices which COULD result in personal injury or death.

CAUTION

Hazards or unsafe practices which COULD result in minor personal injury or property damage.

SA VE THESE INSTRUCTIONS

Additional copies of this manual and any decals on the product are available upon request at no charge.

Greenlee Textron Inc. / Subsidiary of Textron Inc.

Find Quality Products Online at: [email protected]

www.GlobalTestSupply.com

Page 3

8,000 lb. Capacity Hook-Type Cable Sheaves

SAFE OPERATING PRA CTICES

SA VE THESE INSTRUCTIONS

Calculating the Load on the Hook

• Use hook sheaves with a capacity rating

or greater than

developed by the puller. If you must use an

under-rated sheave

the pull force will not exceed the sheave rating, or you must stop the pull if the force exceeds the sheave rating.

• The load on the hook sheave may be twice that on the rope. Know and understand how to calculate each hook sheave load for each change in rope direction.

• Make sure that all anchors, slings and components of the supporting structure can withstand the loads applied to them.

Failure to observe these warnings could result in the hook sheave breaking its mounting and striking nearby personnel, causing serious injury or death.

that of the maximum force

, then you must know that

equal to

CHART #1

QUICK REFERENCE CHART

ADDED LOAD

ROPE ANGLE ON HOOK (R)

straight 0

150° .52 x T 135° .77 x T 120° 1 x T

90° 1.41 x T 60° 1.73 x T

FORMULA #1

45° 1.85 x T 30° 1.93 x T

full return 2 x T

T = Pulling Force

on Rope

LOAD ON HOOK

FORMULA FOR CALCULATING HOOK AND STRUCTURE LOAD

(SINGLE HOOK SHEAVE)

θ = Degrees of change in rope direction T = Rope Tension R = Load on Hook and mounting

structure

DEGREES OF CHANGE IN ROPE

DIRECTION

PULLING FORCE

ON ROPE

R = 2 x T x SIN ((180 - θ)/2)

Greenlee Textron Inc. / Subsidiary of Textron Inc.

Find Quality Products Online at: [email protected]

www.GlobalTestSupply.com

Page 4

8,000 lb. Capacity Hook-Type Cable Sheaves

SAFE OPERATING PRA CTICES

SA VE THESE INSTRUCTIONS

Check the angle the rope makes over the sheave. Determine the load on the hook and supporting structures, and be sure they will withstand the load.

A rope making a 120° bend over the sheave adds the total pulling force to the load on the hook and structure.

120°

ADDS TOTAL

–

PULLING

1 –

FORCE

A straight rope will not add any load to the hook and structure.

A rope making a 150° bend over the sheave adds half the pulling force to the load on the hook and structure.

0°

0 – 1 – 2

NO LOAD

ADDED

ADDS 1/2

PULLING FORCE

A rope making a 90° bend over the sheave adds nearly one and a half times pulling force to the load on the hook and structure.

A rope making a full return bend over the sheave adds double the total pulling force to the load on the hook and structure.

ADDS 1-1/2 x

0 –

PULLING

FORCE

– 2

90°

0 –

ADDS TWICE

1 –

PULLING

FORCE

180°

150°

Greenlee Textron Inc. / Subsidiary of Textron Inc.

Find Quality Products Online at: [email protected]

www.GlobalTestSupply.com

FULL

RETURN

Page 5

ANGLE

8,000 lb. Capacity Hook-Type Cable Sheaves

SAFE OPERATING PRA CTICES

SA VE THESE INSTRUCTIONS

ANGLE

CALCULATING THE LOAD ON SINGLE HOOK SHEAVES

with two attachment points (Figure 2)

• Determine the load on the sheave from Chart #1 “Quick Reference Chart” or Formula #1 (page 3).

• Determine the angles “A” and “B” (Figure 2) by extending an imaginary line beyond the yoke as illustrated

• Determine the angles “A” and “B” (Figure 2) by measuring angles “C” and “D” and using Formula #2 below.

Figure 2 - Single Hook Sheave with two attachment points

FORMULA #2

FORMULA FOR CALCULATING ANGLES “A” AND “B”

Measure angles “C” and “D” (see Figure 2)

FORMULA #3

FORMULA FOR CALCULATING HOOKS AND STRUCTURES LOADS

(Twin Yoke Sheaves or Single Hook Sheaves with two attachment points)

WHERE:

R1 =

COS A + SIN A/TAN B

R = Added Load on Sheave (from page 3) R1 = Load on left mounting R2 = Load on right mounting

R2 =

COS B + SIN B/TAN A

θ = Degrees of change in rope direction

A = Degrees between left mounting line and centerline of rope legs B = Degrees between right mounting line and centerline of rope legs

L = Centerline between rope legs

• Calculate the loads R1 and R2 using Formula #3 below

ANGLE A = 180° - 1/2 ANGLE B = 180° - 1/2

θ - C θ - D

Greenlee Textron Inc. / Subsidiary of Textron Inc.

Find Quality Products Online at: [email protected]

www.GlobalTestSupply.com

Page 6

ANCHOR

ANGLE B (45°)

8,000 lb. Capacity Hook-Type Cable Sheaves

8000 LBS.

ANGLE D (100°)

ANGLE θ (70°)

ANCHOR

ANGLE A (35°)

ANGLE C (110°)

Example:

In this example we’ll pull up out of a manhole using the Ultra TuggerTM cable puller. The pull force is unknown so we’ll assume the maximum rope tension will be 8000 pounds. First, we’ll need to measure some angles.

1. We measure angle θ between the rope legs as 70 degrees.

2. We measure angle A between the extended line of the frame and one anchor line either directly as 35 degrees or by measuring angle C as 110 degrees and calculating angle A from Formula #2:

A = 180 - 1/2 x θ - C = 180 - 1/2 x 70 - 110 = 35 degrees

3. We measure angle B between the extended line of the frame and the second anchor line either directly as 45 degrees or by measuring angle D as 100 degrees and calculating angle B from Formula #2:

B - 180 - 1/2 x θ - D = 180 - 1/2 x 70 - 100 = 45 degrees

4. Calculate the hook load “R” from Formula #1: R = 2 x T x sin((180-θ)/2) = 2 x 8000 x sin ((180-70)/20) = 16000 x sin(55) = 13106 pounds

5. Calculate the loads on anchor points 1 and 2 from Formula #3: R1 = R/{cos(A) + sin(A) / tan(B)} = 13106 / {cos(35) + sin(35) / tan(45)} = 9410 pounds R2 = R/{cos(B) + sin(B) / tan(A)} = 13106 / {cos(45) + sin(45) / tan(35)} = 7633 pounds

Summary:

Rope Tension: 8,000 lbs. Load on Hook: 13,106 lbs. Load on Chain 1 and Anchor 1: 9,410 lbs. Load on Chain 2 and Anchor 2: 7,633 lbs.

Greenlee Textron Inc. / Subsidiary of Textron Inc.

Find Quality Products Online at: [email protected]

www.GlobalTestSupply.com

Page 7

8,000 lb. Capacity Hook-Type Cable Sheaves

REPRINTED WITH PERMISSION BY THE CROSBY GROUP

Crosby Hoist Hook

Warnings and Application Instructions

• Loads may disengage from hook if proper procedures are not followed.

• A falling load may cause serious injury or death.

• See OSHA Rule 1926.550(g) for personnel hoisting by cranes or derricks. A Crosby 319, 320, or 322 hook with a PL Latch attached (when secured with the bolt, nut and pin) may be used for lifting personnel.

• Threads may corrode and/or strip and drop the load.

• Hook must always support the load. The load must never be supported by the latch.

• Never apply more force than the hook’s assigned Working Load Limit (WLL) rating.

• Read and understand these instructions before using hook.

S-319

Important Safety Information - Read and Follow:

• Always visually inspect hook before using.

• Inspect hook and threads with magnetic particle and/or dye penetrate annually, or more often in severe operating conditions.

Note: Some Disassembly may be required.

• Never use a hook whose throat opening has been increased, or whose tip has been bent more than 10 degrees out of plane from the hook body, or is in any other way distorted or bent.

Note: A latch will not work properly on a hook with a

bent or worn tip.

S-320 S-322

• Never use a hook that is worn beyond the limits shown in Figure 1.

• Remove from service any hook with a crack, nick, or gouge. Hooks with a crack, nick, or gouge shall be repaired by grinding lengthwise, following the contour of the hook, provided that the reduced dimension is within the limits shown in Figure 1.

• Never repair, alter, rework, or reshape a hook by welding, heating, burning, or bending.

2/3

45° 45°

ZONE B

60°

ZONE A

ZONE A: REPAIR NOT REQUIRED ZONE B: 10% OF ORIGINAL DIMENSION ZONE C: 5% OF ORIGINAL DIMENSION ZONE D: SEE MINIMUM THREAD SIZE CHART

ZONE C

Figure 1

ZONE B

45° 45°

60°

ZONE A

ZONE C

2/3

ZONE D

• Never side load, back load, or tip load a hook. (See Figure 2.)

• Eye hooks, shank hooks and swivel hooks are designed to be used with wire rope or chain. Efficiency of assembly may be reduced when used with synthetic material.

• Do not swivel the S-322 swivel hook while it is supporting a load.

• The use of a latch may be mandatory by regulations or safety codes; e.g., OSHA, MSHA, ANSI/ASME B30, Insurance, etc.

Note: When using latches, see instructions in

“Understanding: The Crosby Group Warnings” for further information.

Side Load

Back Load

Wrong

Figure 2

Tip Load

Greenlee Textron Inc. / Subsidiary of Textron Inc.

Find Quality Products Online at: [email protected]

www.GlobalTestSupply.com

Page 8

8,000 lb. Capacity Hook-Type Cable Sheaves

LOAD

REPRINTED WITH PERMISSION BY THE CROSBY GROUP

• Always make sure the hook supports the load. (See Figure 3.) The latch must never support the load (See Figure 4).

Right

Figure 3

Wrong

Figure 4

Warnings and Application Instructions

• When placing two (2) sling legs in hook, make sure the angle from the vertical to the outermost leg is not greater than 45°, and the included angle between the legs does not exceed 90° (See Figure 5).

• See ANSI/ASME B30.1 0 “Hooks” for additional information.

*For angles greater than 90°, or more than two (2) legs, a master link

or bolt-type anchor shackle should be used to attach the legs of the sling to the hook.

45° 45°

Figure 5

Important Safety Information - Read and Follow:

• Always inspect hook and latch before using.

• Never use a latch that is distorted or bent.

• Always make sure spring will force the latch against the tip of the hook.

• Always make sure hook supports the load. The latch must never support the load. (See Figures 1 & 2.)

• When placing two (2) sling legs in hook, make sure the angle between legs is small enough and the legs are not tilted so that nothing bears against the bottom of the latch. (See Figures 3 & 4.)

• Latches are intended to retain loose sling or devices under slack conditions.

• Latches are not intended to be an anti-fouling device.

• Loads may disengage from hook if proper procedures are not followed.

• A falling load may cause serious injury or death.

• See OSHA Rule 1926.550(g) for personnel hoisting by cranes or derricks. A Crosby or McKissick hook and this latch (when secured with the bolt, nut and pin) may be used for lifting personnel.

• Hook must always support the load. The load must never be supported by the latch.

• Read and understand these instructions before using hook.

Right

Figure 1

Greenlee Textron Inc. / Subsidiary of Textron Inc.

Find Quality Products Online at: [email protected]

www.GlobalTestSupply.com

Wrong

Figure 2

Right

Figure 3

Wrong

Figure 4

Page 9

8,000 lb. Capacity Hook-Type Cable Sheaves

Parts List

KEY PART NO. PART NO. PART NO.

NO. DESCRIPTION QTY. FOR 8012 FOR 8018 FOR 8024

1 Frame Unit 1 500 0854.4 500 0855.2 500 0856.0 2 Sheave Unit (with #6) 1 500 0843.9 500 0844.7 500 0845.5 3 Sheave Pin 1 500 0838.2 500 0846.3 500 0850.1 4 #8 Hitch Pin Clip 1 905 0302.3 905 0302.3 905 0302.3

Decal 1 501 2121.9 501.2121.9 501 2121.9 5 Roll Pin, 3/16 x 1.50 1 905 0700.2 905 0700.2 905 0700.2 6 Bearing 2 905 4838.8 905 4838.8 905 4838.8 7 Latch Unit 1 905 4185.5 905 4185.5 905 4185.5

Greenlee Textron Inc. / Subsidiary of Textron Inc.

Find Quality Products Online at: [email protected]

www.GlobalTestSupply.com