EP0879165A1 - Pince debrayable a ressort a lame - Google Patents
Pince debrayable a ressort a lameInfo
- Publication number
- EP0879165A1 EP0879165A1 EP96939157A EP96939157A EP0879165A1 EP 0879165 A1 EP0879165 A1 EP 0879165A1 EP 96939157 A EP96939157 A EP 96939157A EP 96939157 A EP96939157 A EP 96939157A EP 0879165 A1 EP0879165 A1 EP 0879165A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- clamp
- spring
- control lever
- clamp body
- cable
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B12/00—Component parts, details or accessories not provided for in groups B61B7/00 - B61B11/00
- B61B12/12—Cable grippers; Haulage clips
- B61B12/122—Cable grippers; Haulage clips for aerial ropeways
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/59—Manually releaseable latch type
- Y10T403/599—Spring biased manipulator
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/60—Biased catch or latch
- Y10T403/606—Leaf spring
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/60—Biased catch or latch
- Y10T403/608—Pivoted
Definitions
- the invention relates to a disengageable clamp for coupling a load to a carrier-tractor cable of an overhead cable transport installation, comprising a clamp body extending transversely on one side of the cable, in position coupled to the latter, and carrying an articulation of a load support hanger, a cable clamping jaw, constituted by a fixed jaw carried by the clamp body and a movable jaw articulated on the fixed jaw, a lever control, which is integral with the mobile jaw and extends the latter by extending and struggling in a plane perpendicular to the cable and containing the clamp body, to control the opening and closing of the jaw, and at least one spring stressing the control lever in the closed position of the jaw.
- a known clamp of the kind mentioned (EP-A-0 056 919) has coil springs interposed between the clamp body and the control lever. Coil springs require an axial guide rod and joints in the spring anchoring zones. This arrangement is complicated and the springs have a large clearance and are therefore bulky.
- the object of the present invention is to allow the production of a disengageable clamp of simple and compact structure, and insensitive to frost or ice, so as to be able to remain in line permanently.
- the clamp according to the invention is characterized in that said spring is a leaf bending spring, which cooperates on the one hand with the control lever and on the other hand with the clamp body, said leaf spring extending substantially in said plane or parallel to this plane, and in the general direction of the clamp body and providing the coupling force of the clamp to the cable.
- a leaf spring can be housed in a limited space and there is no risk of it being blocked by the glass, the glass breaking as soon as the spring bends. The absence of a guide rod also reduces the risk of blockage.
- the blade can have various forms at rest and by a judicious choice of the anchoring points and / or of the configuration and of the structure of the blade, it is easy to obtain an appropriate curve of variation of the control force of the pliers.
- the spring can be of a well-known type with several superimposed blades of different characteristics.
- WO-A-87 01081 and DE-B-10 80 580 disclose clamps incorporating a leaf spring, but this spring does not provide the coupling force to the cable, which is derived from the weight of the cabin .
- two springs are arranged symmetrically on either side of the plane containing the clamp body and the control lever, so as to ensure the safety of coupling of the clamp to the cable in the event of breakage of one of the springs and to distribute the forces.
- the spring leaf of elongated shape, is interposed between the clamp body and the control lever, one of the ends being, for example, rigidly anchored on the clamp body , on the side of the jaw and the other end cooperating with a roller carried by the control lever, on the side of the free end of the latter.
- the blade thus extends almost parallel to the control lever and frees up the space around the clamp body in the articulation zone of the hanger.
- the leaf spring is almost rectilinear, in the clamping position of the clamp, and it is fixed at its two ends, so as to be subjected to a buckling force during the opening movement of the clamp.
- the opening control is exerted on the control lever, in the usual manner, or preferably directly on the spring.
- the leaf spring has a significant curvature, for example, in the form of a half-loop or of several drum loops, in order to increase the length of the blade while limiting the space requirement. .
- the ends of the spring leaf can be rigidly anchored, for example by embedding, on the clamp body and / or on the control lever, or have an articulation allowing limited relative movement.
- the leaf spring is braced by its ends on the clamp body and its middle part cooperates with the control lever, a reverse arrangement being possible.
- One end of the spring is, for example, embedded on the clamp body, while the opposite end is mounted with limited sliding by a link articulated on the clamp body.
- the two supports can be constituted by articulated links.
- the middle part of the spring is supported by a lug carried by the control lever to transmit the force of the spring to this lever.
- Two arcuate springs of reverse curvature can be associated by a connection of their respective ends, the middle part of one of the springs cooperating with the control lever and that of the other spring with the clamp body.
- the ends of the springs are preferably connected by articulations and in this case at least one of the middle parts is rigidly anchored on the clamp body and / or the control lever.
- Figures 1 and 2 are schematic elevational views of a clamp according to the invention, shown respectively in the open position and in the closed position;
- Figures 3 and 4 are views similar to Figure 1 showing two different arrangements of the springs;
- Figures 5 and 6, 7 and 8, 10 and 11 are views similar to Figures 1 and 2, illustrating three alternative embodiments, according to the invention;
- Figure 9 is a plan view of the clamp according to Figure 1;
- Figure 12, similar to Figure 10 shows a spring consisting of two conjugate blades;
- Figure 13 is a view similar to that of Figure 11, showing a different arrangement of the spring;
- Figures 14 and 15 are views similar to Figures 1 and
- Figures 16 and 17, 18 and 19 are views similar to Figures 1 and 2, showing two embodiments of the invention, using braced springs.
- a disengageable clamp has an elongated body 10 which extends, in the coupled position of the clamp to the cable, transversely to the cable.
- the body 10 carries an articulation 11 of a hanger 12 and it is extended by a pair of jaws 13, 14 forming a cable clamping jaw.
- One 13 of the jaws is fixed and the other mobile 14 is articulated on an axis 15 carried by the body 10. In the cable clamping position by the jaws 13,14, the axis 15 extends parallel above of the cable.
- the movable jaw 14 is shaped at the end 16 of a control lever 17, which extends and can be struggled, during a pivoting on the axis 15, in a plane perpendicular to the cable, which contains the body clamp 10 and which corresponds to the plane of Figure 1.
- a control roller 20 At the end 18, opposite the movable jaw 14, of the lever 17 is fixed an axis 19 of rotation of a control roller 20, capable of cooperating with a rail control 28.
- the gripper body 10 carries rollers 21 for rolling and a cross member 22 for friction drive, to move the gripper, disengaged from the cable, in the stations on transfer rails.
- a such pliers are well known and need not be described in more detail.
- control lever 17 is biased in the cable clamping position, by a pair of leaf springs 23, 24 interposed between the control lever 17 and the body of clamp 10.
- the two springs 23, 24 are arranged symmetrically on either side of the plane, defined by the control lever 17 and the clamp body 10 and they extend parallel to this plane in the general direction of the lever.
- One 25 of the ends of the springs 23,24 is rigidly anchored by embedding in the clamp body 10 on the side of the jaws 13,14, while the opposite end 26 is in support of a roller 27, rotatably mounted on the control lever 17 on the side of the control roller 20. In the closed position of the clamp, shown in FIG.
- the leaf springs 23, 24 are substantially rectilinear, under pretension and they exert a force F on the control lever 17, tending to rotate it counterclockwise, tightening the cable.
- the control rail 28 moves the control roller 20 downwards
- the control lever 17 pivots clockwise towards the position, shown in FIG. 1, of opening of the clamp, at 1 'against the force F' exerted by the springs 23, 24, bent downwards.
- the roller 27 can be constituted by a simple stop or, conversely, present a guide rail for the end 26 spring. It is clear that the roller 27 can be arranged on the clamp body 10, the spring 23,24 then being embedded on the control lever 17 and that the clamp can comprise a single spring or vice versa a greater number of springs.
- FIG. 3 illustrates a variant, in which the springs 23, 24 are embedded on the side of the clamp body 10 opposite the jaws 13, 14, while their free end 26 is in abutment a roller 27 arranged in the middle part of the control lever 17.
- the operation of the clamp is not modified, but it should be noted that in the arrangement of the springs 23, 24, according to FIGS. 1 and 2, the lever arm of forces F and F 'remains substantially constant, while in the arrangement according to Figure 3 the lever arm varies significantly.
- the springs 23, 24 are folded in the form of a half loop, one of the ends 25 of which is embedded in the clamp body 10, on the side opposite the jaws 13, 14 and the other end 26 of which is embedded on the control lever 17 on the side of the roller 20.
- the great length and the folded shape of the spring leaf 23, 24 allow compensation for the relative displacements of the anchoring points and the blade can be embedded at both ends, which simplifies the whole.
- the mode of implementation illustrated by FIGS. 5 and 6, takes up the arrangement according to FIGS. 1 and 2, for supporting the spring 23, 24 on rollers 27 on the side of the roller 20 of the control lever 17 and embedding on the gripper body 10 on the side of the jaws 13,14, but the embedding point is shifted upward at the crossbar 22.
- the lever arm of the force F 'of the open gripper is lower than that of the force F of the closed clamp and the control force of the clamp can thus be kept substantially constant or even be reduced as the clamp is opened. It is understood that a judicious choice of the characteristics of the springs 23, 24 and of the anchoring points makes it possible to obtain the desired curve of variation of the control force of the clamp.
- the springs 23, 24 are wound in a drum, in the form of a clothespin spring, one of the ends of the springs 23, 24 being articulated on the clamp body 10, while the opposite end 26 is articulated on the control lever 17 on the side of the control roller 20. In the closed position of the clamp,
- each spring 23, 24 can be associated with a conjugate spring 23 ', shown in broken lines in FIGS. 7 and 8.
- the conjugate spring 23' has the same shape and is articulated at the same locations as the associated spring, but it is arranged opposite and its winding direction is opposite. This increases the restoring force and the safety of the clamp.
- the springs 23, 24, of elongated shape are substantially rectilinear, under pretension and slightly pre-bent, in the closed position of the clamp, shown in FIG. 11. They exert a force F on the lever control 17, tending to pivot the latter anti-clockwise, for tightening the cable.
- the control rail 28 moves the control roller 20 downwards
- the control lever 17 pivots clockwise towards the position, shown in FIG. 10, of opening of the clamp, causing the bending by buckling of the springs 23,24.
- the force opposed by the springs 23, 24 remains substantially constant from the start of the buckling, which makes it possible to limit the control energy.
- the articulation of the ends 25, 26 of the springs 23, 24 is, for example, constituted by a simple looped folding of these ends around a pivot carried by the control lever 17 or the clamp body 10.
- One or the two ends 25, 26 of the springs 23, 24 can be fitted.
- the springs 23, 24 can be pre-bent on one side or the other and it is advantageous to associate with each spring 23, 24, a conjugate spring 23 ′, of opposite curvature, and articulated at the same points, to constitute pairs of springs 23,23 'in the shape of an ellipse, as shown in Figure 12, in order to double the force and to increase safety. According to the variant illustrated in FIG.
- the springs 23, 24 are articulated in the vicinity of the ends of the lever 17 and of the clamp body 10, the point of attachment to the clamp body 10 being advantageously offset downwards by means of a appendix 31, so as to lengthen the springs 23, 24 and to adapt their characteristics.
- Figures 14 and 15 illustrate another mode of control of the clamp.
- the movable jaw 14 of the clamp is carried by a shortened lever 29, to which one of the ends 26 of the spring 23,24 is articulated, the other end 25 being articulated to the clamp body 10 on the side opposite the jaws 13,14 .
- the spring 23,24 carries an idler roller 30, capable of cooperating with the control rail 28, extending along the path of movement of the clamp, to cause the buckling of the spring 23,24 and the opening of the jaws 13.14.
- the buckling force of the spring 23,24 can obviously be applied to the spring 23,24 in any other operating manner, in particular by pads.
- Such a clamp is particularly simple and it is clear that the spring 23, 24 can be arranged differently, in particular according to one of the variants described above.
- the working mode of the leaf bending springs 23,24 is different in the embodiments shown in Figures 16 to 19.
- one of the ends of the springs 23,24 is rigidly anchored by embedding in the clamp body 10 on the side of the jaws 13,14, while the opposite end 26 is articulated on a rod 34, the opposite end of which is articulated on the clamp body 10.
- the middle part of the springs 23,24 is loaded by a roller 27 carried by the control lever 17.
- the leaf springs 23,24 In the closed position of the clamp, shown in FIG. 19, the leaf springs 23,24 are bent under pretension and they exert a force on the control lever 17, tending to pivot the latter anti-clockwise, for tightening the cable.
- FIGS. 16 and 17 illustrate a variant, in which each spring 23, 24 is associated with a conjugate spring 23 ′ of reverse curvature, each end 25, 26 of the spring 23, 24 being connected by a hinge 32, 33 to a conjugate end 25 ', 26' of the associated spring 23 ', to constitute a pair of springs of elliptical shape.
- the middle part of the spring 23,24 cooperates with control lever 17, while the middle part of the conjugate spring 23 'cooperates with the clamp body 10.
- These middle parts can be rigidly fixed, for example by embedding or be articulated on the gripper body 10 and / or the control lever 17. They may also be in support of a roller carried by the control lever 17 and / or the gripper body 10, in a manner similar to that described above. above, the positioning of the conjugate springs 23, 23 ′ being, in this case, ensured by any operating means, for example by mounting the articulation 32 in rotation on an axis carried by the clamp body 10, as shown in FIGS. 16 and 17.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
- Mechanical Control Devices (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Handcart (AREA)
Description
Claims
Applications Claiming Priority (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9514267 | 1995-11-22 | ||
FR9514267A FR2741313B1 (fr) | 1995-11-22 | 1995-11-22 | Pince debrayable a ressort a lame d'un teleporteur |
FR9605929A FR2748248B1 (fr) | 1996-05-06 | 1996-05-06 | Pince debrayable a ressort de flexion arc-boute |
FR9605927 | 1996-05-06 | ||
FR9605929 | 1996-05-06 | ||
FR9605927A FR2748246B1 (fr) | 1996-05-06 | 1996-05-06 | Teleporteur a pince debrayable ayant un ressort travaillant au flambage |
FR9605928 | 1996-05-06 | ||
FR9605928A FR2748247B1 (fr) | 1996-05-06 | 1996-05-06 | Pince debrayable a ressort en tambour d'un teleporteur |
PCT/FR1996/001837 WO1997018980A1 (fr) | 1995-11-22 | 1996-11-20 | Pince debrayable a ressort a lame |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0879165A1 true EP0879165A1 (fr) | 1998-11-25 |
EP0879165B1 EP0879165B1 (fr) | 1999-11-03 |
Family
ID=27446962
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96939157A Expired - Lifetime EP0879165B1 (fr) | 1995-11-22 | 1996-11-20 | Pince debrayable a ressort a lame |
Country Status (6)
Country | Link |
---|---|
US (1) | US6290425B1 (fr) |
EP (1) | EP0879165B1 (fr) |
AT (1) | ATE186260T1 (fr) |
CA (1) | CA2248183A1 (fr) |
ES (1) | ES2138388T3 (fr) |
WO (1) | WO1997018980A1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT501022A3 (de) * | 2004-11-04 | 2009-01-15 | Innova Patent Gmbh | Klemmvorrichtung zum ankuppeln einer kabine oder eines sessels an das förder- bzw. zugseil einer seilbahnanlage |
FR2920733B1 (fr) * | 2007-09-11 | 2009-11-27 | Pomagalski Sa | Installation de transport de passagers embarques a bord d'un vehicule, a deux moyens de deplacement du vehicule |
CN101537837B (zh) * | 2009-04-27 | 2011-05-11 | 中国电力科学研究院 | 一种索道牵引绳的卡紧装置 |
US8573133B2 (en) * | 2009-09-22 | 2013-11-05 | Pomagalski | Passenger transport installation comprising independent vehicles travelling on tracks and hauled by cables, and method for transporting passengers |
ITMI20100907A1 (it) * | 2010-05-20 | 2011-11-21 | Ferruccio Levi | Morsa automatica per impianto funiviario dotata di molla a balestra |
FR3003222B1 (fr) * | 2013-03-14 | 2016-09-09 | Sommital | Vehicule de remontee mecanique et installation comprenant ce vehicule |
CN113047168B (zh) * | 2021-04-01 | 2022-10-04 | 安徽虹达道路桥梁工程有限公司 | 一种移动式安全施工平台 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US611570A (en) * | 1898-09-27 | dljsedau | ||
US645314A (en) * | 1899-05-06 | 1900-03-13 | William Dusedau | Cable-tramway. |
US711451A (en) * | 1902-06-12 | 1902-10-14 | William C Davis | Wire-rope tramway. |
FR1237106A (fr) * | 1954-11-23 | 1960-07-29 | Perfectionnements aux téléfériques à mouvement continu, système monocâble (ou bicâble), avec dispositif d'accouplement automatique au câble tracteur | |
DE1080589B (de) | 1957-05-02 | 1960-04-28 | Standard Elektrik Lorenz Ag | Schaltung zum Stellen von Weichen im Eisenbahnsicherungswesen |
IT8423109V0 (it) * | 1984-09-14 | 1984-09-14 | Leitner Spa | Dispositivo perfezionato per il collegamento e l'aggancio automatico di veicoli alla fune traente di impianti di trasporto aereo. |
US4658733A (en) | 1985-08-19 | 1987-04-21 | Kunczynski Jan K | Aerial tramway grip assembly |
AT388346B (de) * | 1987-11-25 | 1989-06-12 | Wopfner Kg Felix | Kuppelbare klemme zum anklemmen von transportmitteln an ein bewegtes seil |
US4961742A (en) * | 1989-03-24 | 1990-10-09 | Torre Randall J | Suture needle holding instrument |
FR2724357B1 (fr) * | 1994-09-08 | 1997-01-24 | Pomagalski Sa | Pince debrayable d'un telesiege ou d'une telecabine |
US5829327A (en) * | 1996-10-10 | 1998-11-03 | Stanton; John L. | Open-end ratchet wrench |
-
1996
- 1996-11-20 EP EP96939157A patent/EP0879165B1/fr not_active Expired - Lifetime
- 1996-11-20 AT AT96939157T patent/ATE186260T1/de not_active IP Right Cessation
- 1996-11-20 ES ES96939157T patent/ES2138388T3/es not_active Expired - Lifetime
- 1996-11-20 CA CA002248183A patent/CA2248183A1/fr not_active Abandoned
- 1996-11-20 WO PCT/FR1996/001837 patent/WO1997018980A1/fr active IP Right Grant
- 1996-11-20 US US09/308,595 patent/US6290425B1/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9718980A1 * |
Also Published As
Publication number | Publication date |
---|---|
US6290425B1 (en) | 2001-09-18 |
ATE186260T1 (de) | 1999-11-15 |
WO1997018980A1 (fr) | 1997-05-29 |
ES2138388T3 (es) | 2000-01-01 |
CA2248183A1 (fr) | 1997-05-29 |
EP0879165B1 (fr) | 1999-11-03 |
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