FR2967077A1 - Rope blocker with reinforced mechanical strength - Google Patents

Rope blocker with reinforced mechanical strength Download PDF

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Publication number
FR2967077A1
FR2967077A1 FR1004333A FR1004333A FR2967077A1 FR 2967077 A1 FR2967077 A1 FR 2967077A1 FR 1004333 A FR1004333 A FR 1004333A FR 1004333 A FR1004333 A FR 1004333A FR 2967077 A1 FR2967077 A1 FR 2967077A1
Authority
FR
France
Prior art keywords
blocker
rope
aluminum
wear
chute
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR1004333A
Other languages
French (fr)
Other versions
FR2967077B1 (en
Inventor
Alain Maurice
Pierre Olivier Chabod
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zedel SAS
Original Assignee
Zedel SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zedel SAS filed Critical Zedel SAS
Priority to FR1004333A priority Critical patent/FR2967077B1/en
Publication of FR2967077A1 publication Critical patent/FR2967077A1/en
Application granted granted Critical
Publication of FR2967077B1 publication Critical patent/FR2967077B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62BDEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B1/00Devices for lowering persons from buildings or the like
    • A62B1/06Devices for lowering persons from buildings or the like by making use of rope-lowering devices
    • A62B1/14Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brakes sliding on the rope
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B29/00Apparatus for mountaineering
    • A63B29/02Mountain guy-ropes or accessories, e.g. avalanche ropes; Means for indicating the location of accidentally buried, e.g. snow-buried, persons

Abstract

Rope blocker comprising an aluminum body (12) having a chord chute (16) and a pivoting trigger (13) provided with a choke cam. The inner wall of the chute (16) is covered by a sheet (20) having a hardness greater than that of aluminum, and / or a coefficient of friction lower than that of aluminum.

Description

Blocker for rope with reinforced mechanical strength Technical field of the invention
The invention relates to a rope stopper comprising: a fixed metal body having a chord chute, said body being made of an aluminum-based material, - a movable trigger pivotally mounted around an axis of the body between an inactive position of introduction of the rope into the chute, and an active position of blocking the rope at the bottom of the chute, said trigger having the opposite of the axis, a shaped surface cam intended to come into contact with the rope.
State of the art
Known blockers consist of an aluminum or aluminum alloy body. The friction due to the sliding and locking of the rope inside the chute, causes over time a gradual wear of the aluminum wall. To remedy this premature wear of the blocker, provision is generally made for an extra thickness of the aluminum wall of the chute. This results in a large footprint and an increase in the weight of the material.
Object of the invention
The object of the invention is to provide a rope locker with enhanced mechanical strength and extended service life.
The blocker according to the invention is characterized in that the inner wall of the chute is covered by anti-wear means made of a material different from aluminum, said material having in particular a hardness greater than that of aluminum, or a coefficient of friction lower than that of aluminum.
According to a preferred embodiment, the anti-wear means are formed by a metal sheet attached to the inner wall of the chute by fixing means. The sheet is advantageously provided with assembly pins attached to the body by welding or bouterollage.
The sheet is preferably made of hardening stainless steel, but any other anti-wear material may be used.
According to another characteristic of the invention, the anti-wear plate can partially or completely marry the inside of the chute of the aluminum body.
Other advantages and features will emerge more clearly from the following description of an embodiment of the invention given by way of nonlimiting example and represented in the accompanying drawings, in which:
Figure 1 is a perspective view of the blocker according to the invention, with the rope engaged in the chute; Figure 2 shows an exploded perspective view of the blocker of Figure 1, the rope is not shown; Figure 3 is a plan view of the blocker of Figure 1, but without the rope; - Figure 4 shows a sectional view along the line 4-4 of Figure 3; Figure 5 illustrates a sectional view along the line 5-5 of Figure 4; 3
Figure 6 is a schematic perspective view of an alternative embodiment; FIG. 7 shows a plan view of FIG. 6, during the fitting of the U-shaped sheet. DETAILED DESCRIPTION OF THE INVENTION
In Figures 1 to 5, a blocker 10 for rope 11 is used for the safety of people climbing or for work at height. The blocker 10 comprises a fixed body 12 of aluminum or aluminum alloy, and a movable trigger 13 pivotable about a first transverse axis 14 between an inactive position of insertion of the rope, and an active position of blocking of the rope. the rope 11.
The lateral portion 12G located to the left of the body 12, is bent in the shape of a U, whose parallel branches are pierced by two holes 15 aligned for the mounting of the axis 14 of the trigger 13.
The lateral wall 12D located to the right of the body 12 is also U-folded by delimiting a chute 16 for the passage of the rope 11. The two lateral parts 12G and 12D are arranged opposite one another, while being separated by an internal housing space of the trigger 13.
The middle portion of the body 12 further includes an upper port 17, and a lower port 18 for setting carabiners.
Opposite the axis 14, the trigger 13 is provided with a cam 19 for catching the rope against the bottom of the chute 16 in the active position. The cam 19 is advantageously provided with a plurality of inclined pins 30 reinforcing the locking effect of the rope 11. For the introduction of the rope 11 into the chute 16, the trigger 13 is actuated to the inactive position by 4
via an auxiliary lever 21 articulated on a second axis 22 of the trigger (see Figure 2).
The inner wall of the trough 16 is advantageously covered by anti-wear means made of a material different from aluminum. This material is chosen to withstand the friction effect exerted by the tension of the rope 11 in the chute 16.
It is thus possible to report on the inner wall, a metal sheet having a hardness greater than that of the aluminum body 12. The attachment of the sheet 20 to the inner wall of aluminum, is carried out by any method of known assembly, especially by welding or bouterollage.
In the example of FIGS. 1 to 5, the sheet 20 is equipped for this purpose with two assembly pins 23 passing through the orifices 24 of the chute 16. The pins 23 are then riveted to permanently fix the sheet 20 to the body of the chute 16. The sheet 20 partially overlaps the inside of the trough 16, where the friction of the rope 11 is the highest.
The ends of the antiwear plate 20 are slightly curved to cover the body 12 with a radius as large as possible so as not to generate sharp edges (see FIG. 4).
The sheet 20 may be stainless steel dipping, or any other metal having a hardness and mechanical strength significantly higher than those of aluminum. The sliding of the rope 11 in the chute 16 is also facilitated because the coefficient of friction of the stainless steel of the sheet 20 is lower than that of the aluminum of the body 11. The lifetime of the blocker 10 is thus prolonged compared to a conventional aluminum blocker 3o.
According to the embodiment variant illustrated in Figures 6 and 7, the sheet 120 is shaped according to a U, so as to match the entire surface of the chute 16, in which it is force-fitted. 5

Claims (9)

  1. REVENDICATIONS1. A rope blocker (10) comprising: - a fixed metal body (12) having a chord passage (16) (11), said body being made of an aluminum-based material, a trigger (13) movable pivotally mounted about an axis (14) of the body (13) between an inactive position for introducing the rope into the chute (16), and an active position for locking the rope (11) at the bottom of the trough (16), said trigger having, opposite the axis (14), a cam-shaped surface coming into contact with the rope (11), characterized in that the inner wall of the trough (16) chute (16) is covered by anti-wear means made of a material different from aluminum. 15
  2. 2. Blocker according to claim 1, characterized in that the constituent material of the anti-wear means has a hardness greater than that of aluminum.
  3. 3. Blocker according to claim 1, characterized in that the material constituting 20 anti-wear means has a coefficient of friction lower than that of aluminum.
  4. 4. Blocker according to claim 1, characterized in that the anti-wear means are formed by a metal sheet (20, 120) attached to the inner wall by fixing means.
  5. 5. Blocker according to claim 4, characterized in that the sheet (20) is provided with assembly pins (23) constituting the attachment means by welding or bouterollage.
  6. 6. Blocker according to claim 4, characterized in that the sheet (20, 120) is made of stainless steel. 6 30
  7. 7. Blocker according to one of claims 4 to 6, characterized in that the plate (20) anti-wear is shaped to fit at least partially the inner wall of the chute (16).
  8. 8. Blocker according to claim 4, characterized in that the plate (120) anti-wear is bent in U to be forced fit inside the chute (16). io
  9. 9. Blocker according to claim 4, characterized in that the ends of the anti-wear plate (20) are slightly curved to cover the body (12) without generating sharp edges.
FR1004333A 2010-11-04 2010-11-04 Rope blocker with reinforced mechanical strength Expired - Fee Related FR2967077B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1004333A FR2967077B1 (en) 2010-11-04 2010-11-04 Rope blocker with reinforced mechanical strength

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FR1004333A FR2967077B1 (en) 2010-11-04 2010-11-04 Rope blocker with reinforced mechanical strength
EP20110354047 EP2450085B1 (en) 2010-11-04 2011-09-21 Rope ascender with increased mechanical strength
ES11354047T ES2427248T3 (en) 2010-11-04 2011-09-21 Rope blocker with reinforced mechanical behavior
TW100140095A TWI546099B (en) 2010-11-04 2011-11-03 Rope clamp
CN201110345327.9A CN102526907B (en) 2010-11-04 2011-11-04 Powerful fixture is added for having of rope

Publications (2)

Publication Number Publication Date
FR2967077A1 true FR2967077A1 (en) 2012-05-11
FR2967077B1 FR2967077B1 (en) 2013-06-14

Family

ID=44022838

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1004333A Expired - Fee Related FR2967077B1 (en) 2010-11-04 2010-11-04 Rope blocker with reinforced mechanical strength

Country Status (5)

Country Link
EP (1) EP2450085B1 (en)
CN (1) CN102526907B (en)
ES (1) ES2427248T3 (en)
FR (1) FR2967077B1 (en)
TW (1) TWI546099B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3927734A (en) * 1974-10-24 1975-12-23 Eugene J Brunette Skyscraper escaper
US4034828A (en) * 1975-04-14 1977-07-12 Rose Manufacturing Company Shock absorbing cable connector
FR2589211A1 (en) * 1985-10-25 1987-04-30 Petzl Ets Safety member with jamming cleat (Croll ascender) for climbing up a fixed rope
US20060102421A1 (en) * 2003-09-12 2006-05-18 Dionne Jeffrey S Circular chambered rope grab
EP2216075A1 (en) * 2009-02-09 2010-08-11 Zedel Rope descender with integrated handhold

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0651178B1 (en) * 1993-10-29 1997-01-15 Goro S.A. Belt fastener
FR2895912B1 (en) * 2006-01-12 2008-03-07 Zedel Soc Par Actions Simplifi INSURING AND RETRIEVAL APPARATUS FOR SINGLE OR DOUBLE ROPE
FR2938445B1 (en) * 2008-11-19 2010-12-31 Zedel Multifunctional insurance apparatus for ropes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3927734A (en) * 1974-10-24 1975-12-23 Eugene J Brunette Skyscraper escaper
US4034828A (en) * 1975-04-14 1977-07-12 Rose Manufacturing Company Shock absorbing cable connector
FR2589211A1 (en) * 1985-10-25 1987-04-30 Petzl Ets Safety member with jamming cleat (Croll ascender) for climbing up a fixed rope
US20060102421A1 (en) * 2003-09-12 2006-05-18 Dionne Jeffrey S Circular chambered rope grab
EP2216075A1 (en) * 2009-02-09 2010-08-11 Zedel Rope descender with integrated handhold

Also Published As

Publication number Publication date
TWI546099B (en) 2016-08-21
ES2427248T3 (en) 2013-10-30
EP2450085B1 (en) 2013-07-10
CN102526907B (en) 2015-10-28
CN102526907A (en) 2012-07-04
FR2967077B1 (en) 2013-06-14
EP2450085A1 (en) 2012-05-09
TW201219082A (en) 2012-05-16

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Effective date: 20150731