FR3063016A1 - DEVICE FOR ASCENSION AND MAINTENANCE ALONG A VERTICAL CABLE - Google Patents

Abstract

A system (1) for ascending along a main cable (2), the ascension system comprising a back support means (7) intended to be secured to the back of a user (3), the system in which it further comprises a retaining means (8) comprising a first portion (9) extreme and a second portion (10) extreme, the first end portion being intended to be secured to the back support means, the second end portion comprising a lumen (22) for receiving the main cable so that the second end portion is slidable along the main cable.

Description

Holder (s): boeking dit sydenham Quentin, boeking dit SYDENHAM FREDERIQUE, BOEKING DIT SYDENHAM KEVIN, KITSON NICHOLAS, BOEKING DIT SYDENHAM ROBIN, KITSON LUC, BOEKING DIT SYDENHAM BENJAMIN, BOEKING DIT SYDENHAM MAEL.

Agent (s): DEJADE AND BISET.

(□ 4 / LIFT AND HOLD DEVICE ALONG A VERTICAL CABLE

FR 3 063 016 - A1 (b /) An ascent system (1) along a main cable (2), the ascent system comprising a back support means (7) intended to be made integral with the back of a user (3), the ascension system being in which it further comprises a retaining means (8) comprising a first extreme part (9) and a second extreme part (10), the first extreme part being intended to be secured to the back support means, the second end part comprising a slot (22) intended to receive the main cable so that the second end part can slide along the main cable.

LIFT AND HOLD DEVICE ALONG A CABLE

VERTICAL The invention relates to the field of belaying and climbing, in particular along a vertical cable. The invention relates more specifically to devices allowing a user to be held in a vertical position when climbing a vertical cable.

Professionals working at height as well as practitioners of sports at height generally protect themselves from falls by means of a harness, connected to at least one cable. Many types of harness exist, depending on the type of use that is made. In general, a harness is composed of a lap belt, thigh loops joined on a ventral part and on a dorsal part by means of straps provided for this purpose. In such a configuration, this type of harness, called a harness, mainly grips an area located in the vicinity of the pelvis of the user, and is perfectly suitable for the use of sports practices such as climbing. For certain other applications requiring for example a tightening of the torso, additional straps are provided, for example at the level of the shoulders or the sternum of the user.

By making it possible to secure yourself by attaching yourself securely with a cable, the harness provides essential security for users operating at great height, but its use is not without drawbacks.

Indeed, it has been found that in the event of prolonged and passive suspension, that is to say in the absence of movement of the limbs, the user can in a few minutes lose consciousness. In the absence of an emergency intervention, the user may be subject to a tachycardia attack which can, in certain extreme cases, be fatal. This type of physiological stress is known as harness syndrome, or harness syndrome, or even suspension trauma. The intra thoracic vascular volume of a user with his limbs suspended is transferred to the extremities of the body, with no possibility of return, which can lead to a lack of oxygenation of the vital organs (see for example Dr. Boyet et al Harness syndrome, publication Urgence pratique n ° 85, P.4952).

Prevention means exist to limit the risk of occurrence of such a syndrome. Thus, French patent application FR 2 932 689 (HEDE ET AL., Zedel) discloses a roping harness composed of a seat belt and a seat harness, linked together by connecting straps.

In addition to the ease of use it provides, such a harness allows a better distribution of the gravity forces exerted by the user on the harness. In this way, the number of compression points, factor of occurrence of a harness syndrome, is limited for the members of the individual in suspension for the use of such a harness, compared to a harness or a harness. conventional without harnesses. The duration of suspension without the risk of developing a harness syndrome is thus increased. However, the risk of developing discomfort is not completely eliminated. In addition, there is nothing to prevent a rearward tilting of the user if such a situation occurs.

It is also known to use a blocker such as that described in the document FR 2 900 579 A1 (PETZL) or also in FR 2 568 132 (PETZL). By raising the blocker towards the chin, a person during the ascent can avoid the occurrence of discomfort. However, this manipulation is not obvious to the user, and is time consuming.

The solutions presented above are hardly compatible for users wishing to climb using self-locking devices, along a cable positioned vertically. Self-locking devices are devices capable of sliding along one or more cables, surrounded by the self-locking device, in one direction, and capable of locking on the cable or cables in a second direction. The cables are generally made of vegetable fibers, synthetic fibers or metallic wires. Conventionally, the self-locking device is produced by a simple cord surrounding the cable, a part comprising teeth capable of being anchored in the cable, or a device comprising a set of rollers and springs.

Thus, to climb along a cable, the individual slides, along the cable, upwards, a first self-locking device connected to a first part of his body, for example the torso, while s pressing a second self-locking device connected to a second part of its body, for example the feet. The individual then places his weight on the first self-locking device, and slides, along the cable, upwards, the second self-locking device.

It is known, in order to adopt a more natural ascent position and less tiring for the individual (that is to say a vertical position, the feet directed downward and the strength of the legs pushing the mass of the individual up to go up the first then the second self-locking), to secure the first self-locking to a first foot of the individual, via a rope, and the second self-locking to a second foot of the individual.

Document US 2015/0251057 (FRANKENHAUSER ET AL.) Describes an ascent system along a vertical cable, comprising a first self-locking device secured to a first foot of a first leg of an individual by the through an ascent device, and a second self-locking device directly attached to a second foot of the individual. The ascent device comprises a sheath, able to work in traction, defining at a first end a stirrup, into which the individual inserts his first foot. The sheath is provided, at a second end, opposite the first end, with a system for hooking to the first self-locking device. The ascent device also includes an elastic cord, present inside the sheath, and integral with the first end of the sheath and a pulley sliding on the cable, connected to the torso of the individual.

In this device of the prior art, when the first leg of the individual is stretched, his weight rests on his first foot. The weight of the individual is supported by the first self-locking device through the sheath, the first self-locking device preventing a sliding of the first foot along the cable. The first self-locking device and the pulley are then in a position distant from each other, which tightens the elastic cord. When the individual wants to slide the first self-locking device on the cable, upwards, he transfers his mass to his second foot, the second self-locking device preventing the second foot from sliding along the cable, the individual then raises his first foot in bending the knee. The elastic cord relaxes, bringing the first self-locking device towards the pulley. The pulley, attached to the individual's torso, remains substantially fixed relative to the cable, and the first self-locking device slides up the cable.

Such an ascent device effectively makes it possible to climb along a vertical cable by the sole force of the legs of the individual, the latter remaining in a vertical position, the feet directed downward while releasing the hands of the individual.

In addition, when the individual stretches his first leg, the first self-locking remaining substantially fixed relative to the cable and the pulley sliding up along the cable, the elastic cord tending, the force generated by the individual must allow, in addition to lifting its own weight, to stretch the elastic cord. The elastic cord is constantly subjected to variable stresses, which risk modifying its mechanical properties, by fatigue. In addition, user stability is only ensured by the harness. However, in the case of the use of a harness, neither the torso nor the back are maintained, which makes it less easy to support the user in a vertical position.

A first objective is to propose an ascent system along a vertical cable, making it possible to maintain the individual in a vertical position without using the hands, the feet directed downwards. A second objective is to provide an ascent system along a vertical cable, easy to use.

A third objective is to provide such an ascent system, provided with an ascent system requiring only the strength of the legs of the individual to climb.

To this end, it is proposed, first, an ascent system along a main cable, the ascent system comprising a back support means intended to be secured to the back of a user , the ascension system further comprising a retaining means comprising a first end part and a second end part, the first end part being intended to be integral with the back support means, the second end part comprising a light intended to receive the main cable, so that the second end part can slide along the main cable.

The ascent system keeps an individual in position along the main cable, which allows him to free the use of his hands, but also to avoid ending up in a position that could cause a harness syndrome.

Various additional characteristics can be provided, alone or in combination:

- The retaining means comprises a bar, the first end part being a portion of the bar intended to be secured to the back support means, the second end part comprising a sliding device;

the back support means is a plate, having a shape adapted to fit the user's back;

the back support means further comprises means for holding the head of the user;

the bar extends from the first end part, in a substantially rectilinear direction, then has a curvature, the bar extending above the head of the user when the first end part is secured to the back support means, this back support means being secured to the user's back;

the back support means comprises a hollow rod, the bar being fitted within the hollow rod, the hollow rod comprising at least one hole cooperating with at least one ball disposed on the bar;

the light comprises a contour forming a closed loop able to be opened;

the back support means is secured to the back of the user, by means of suspenders and / or by a fastening belt;

the back support means comprises a connecting device intended to link the back support means to a harness;

the back support means comprises a device for climbing along a main cable, this device further comprising a stirrup, a holding element configured to be fixed, at a first end, to the stirrup and intended to be secured, at a second end, to a first self-locking device capable of being disposed on the main cable, the holding element comprising a rod, capable of withstanding a compressive force exerted between the first end and the second end, of so as to slide the first self-locking device along the main cable, the rod of the holding element comprises several independent segments.

It is proposed, secondly, an ascent device along a main cable, comprising a stirrup, the ascent device further comprising a holding element configured to be integral, in a first end of the stirrup and intended to be integral, at a second end, with a first self-locking device capable of being disposed on the main cable, the holding element comprising a rod capable of withstanding a compressive force exerted between the first end and the second end, so as to slide the first self-locking along the main cable.

The holding element thus allows an individual to mount the first self-locking along the main cable using only a first foot inserted in the stirrup.

The holding element also allows an individual to climb along the main cable without using its upper limbs.

Various additional characteristics can be provided, alone or in combination:

the device comprises a traction cable configured to be integral, at a first end, with the stirrup and intended to be integral, at a second end, with the first self-locking device, the traction cable being able to withstand a traction force exerted between the first end and the second end, so as to prevent the ascending device from sliding along the main cable; the rod of the holding member extends from the first end to the second end of the holding member;

the rod of the holding element comprises several independent segments;

the rod of the holding member comprises sleeves, configured to assemble the segments to each other; the rod has the general shape of a tube with circular section; the holding element comprises an elastic cable, configured to be integral with the first end and the second end of the holding element, the elastic cable being arranged inside the rod;

the rod of the holding element extends from the first end to the second end of the holding element, the rod being able to withstand a tensile force exerted between the first end and the second end, so as to prevent the ascending device from sliding along the main cable.

It is proposed, thirdly, an ascent system along a main cable comprising an ascent device as presented above, the ascent system comprising a first self-locking device configured to be integral with the second end of the holding element.

The system includes a footrest, configured to be secured to a second self-locking device capable of being disposed on the main cable.

Other characteristics and advantages of the invention will appear more clearly and concretely on reading the following description of embodiments, which is made with reference to the appended drawings in which:

Figure 1 is a schematic perspective view of the ascent system along a vertical cable, according to a first embodiment;

Figure 2 is a schematic perspective view of the ascent system along a vertical cable, according to the first embodiment, shown with the main cable;

Figure 3 is a schematic sectional view along the plane III-III of the ascent system along a vertical cable;

Figure 4 is a schematic perspective view of the ascent system along a vertical cable, according to a variant of the first embodiment;

Figure 5 is a schematic perspective view of the ascent system along a vertical cable, according to a variant of the first embodiment, the ascent system being shown carried by a user in a conscious state;

FIG. 6 is a schematic perspective view of a variant of the first embodiment, the ascent system being shown carried by a user who has lost consciousness;

Figure 7 is a schematic perspective view of an ascent device of an ascent system along a main cable, corresponding to a second embodiment of the ascent system;

Figure 8 is a schematic perspective view of an ascent device of an ascent system along a main cable, corresponding to the second embodiment of the ascent system, the ascent device being shown disassembled;

Figure 9 is a schematic perspective view of an ascent device of an ascent system along a main cable, corresponding to a variant of the second embodiment of the ascent system;

FIG. 10 is a schematic view of a first ascent phase of a user climbing along the main cable, using the variant of the second embodiment of the ascent system;

Figure 11 is a schematic view of a second ascent phase of a user climbing along the main cable, using the variant of the second embodiment of the ascent system.

In Figures 1 to 5 is shown a system 1 for climbing along a main cable 2, according to a first embodiment. The ascent system 1 is intended to be carried by a user 3, as illustrated in FIGS. 5 and 6.

Commonly to the embodiments shown, the main cable 2, as well as the other cables are made of vegetable fibers, synthetic or metallic son.

According to the embodiments shown in the figures, the main cable 2 is positioned substantially vertically, and fixed at its upper end.

Without being limiting, the user 3 is shown in the figures provided with a harness 4 of the harness type, comprising a ventral band 5 connected to two thigh towers 6.

According to embodiments not shown, the harness 4 comprises a harness, arranged at the level of the buttocks of the user 3, so as to limit the appearance of compression points, a factor favoring the occurrence of syndrome of the harness.

We define with respect to the ascension system 1 an orthogonal coordinate system XYZ constituting a trihedron, comprising three perpendicular axes two by two, namely:

- an X axis, defining a longitudinal, horizontal direction,

- a Y axis, defining a transverse, horizontal direction, which with the X axis defines a horizontal XY plane,

- A Z axis, defining a vertical direction, perpendicular to the horizontal XY plane, and defining the general direction of extension of the main cable 2.

In the following description, and in relation to the reference defined above, the terms longitudinal or longitudinally refer to a direction coincident with the axis X, the terms transverse or transversely refer to a direction confused with l axis Y, and the terms vertical or vertically refer to a direction confused with the axis Z. The terms of absolute position, such as forward, backward, up, down, left, right, or relative like above, top, bottom , lower are defined relative to the position of a user 3 on the main cable 2, the positive direction of the Z axis is in the direction of the ascent of the user 3 along the main cable 2.

According to the first embodiment illustrated in Figures 1 to 6, the ascent system 1 comprises a means 7 for back support and a means 8 for retaining. The retaining means 8 has an extreme first part 9, intended to be secured to the back support means 7. The retaining means 8 also comprises a second end portion 10, intended to receive the main cable 2 in sliding.

The back support means 7 is secured to the back of the user 3, that is to say capable of accompanying the movement of the back of the user 3. In this way, the back support means 7 remains constantly in contact with the back of user 3, which allows him to be guided in all circumstances, including in the case where user 3 is the victim of a failure resulting in loss of consciousness, as shown in FIG. 6 .

According to the embodiments described, the back support means 7 comprises a plate 11 provided with a front face 12, intended to come into contact with the back of the user, and a rear face 13, opposite to the front 12. The plate 11 also has sufficient rigidity so as not to deform in torsion along the axis Z, under the action of the pressing force exerted by the back of an adult user 3.

As shown in Figure 2, the back support means 7 comprises a reinforcement 14, intended to be positioned on the side opposite to that in contact with the back of the user 3. Such reinforcement 14 prevents twisting the plate 11 along a vertical axis, making it possible to increase the rigidity of the back support means 7.

The plate 11 and the reinforcement 14 are for example made of aluminum alloy. Advantageously, materials such as carbon fiber or fiberglass are used. Such composite materials allow the plate 11 to warp, of limited amplitude, giving a bending movement to the plate along the Y axis at the level of the user's kidneys, which improves its comfort when wearing the means 7 back support.

As shown in all of the figures, the plate has a geometry matching the back, for example by having a periphery 15 narrowed in the vicinity of the size of the user 3. The plate 11 then has in the vicinity of the shoulders and of the user's lower back 3 a greater width than the part of the plate 11 intended to come into contact with the backbones. In this way, the comfort of the user 3 is reinforced.

According to advantageous embodiments not shown, the plate 11 is provided with a damping element, for example a padding taking the form of a shock absorbing polymer foam, disposed between the back support means 7 and the back of the user 3. The contact agreement between the front face 12 of the plate 11 and the back user 3 is improved. In addition, such an arrangement gives the possibility of limiting the sliding between the front face 12 and the back of the user, which makes it possible to maintain good securing of the back and of the back support means 7.

According to the embodiment shown, the back support means 7 is made integral with the back, by means of straps 16, fixed for example on the plate 11. In this way, the establishment and the use of the ascent system 1 is simplified.

In order to allow good hold, and to avoid play between the back of the user 3 and the back support means 7, the shoulder straps 16 are adjustable by the user 3. The back support means 7 is then adaptable to the user morphology.

According to an alternative embodiment shown in Figures 4 to 6, the straps 16 are connected together using at least one adjustable breast strap 17. In this way, an additional fixation is obtained at the level of the chest of the user 3. The adjustment makes it possible to adapt the back support means 7 to the morphology of the user 3, while making it possible to increase the support of the back of user 3 against retaining means 8.

According to an alternative embodiment, shown in Figures 4 to 6, the back support means 7 has a fixing belt 18, able to surround the waist of the user 3, offering the user the possibility of switch from using a harness 4. Indeed, such a fixing belt 18 makes it possible to oppose the force exerted by the main cable 2 on the second extreme part 10, and thus to avoid any risk of tilting of the back support means 7 over the user 3. In the case of the use of a harness 4, as illustrated in the figures, the fastening belt 18 is positioned above the ventral band, and does not interfere with harness 4, nor with any lifting or lowering device. The establishment of the back support means 7 by the user 3 is also not hampered by the use of the harness 4. These advantages offer flexibility in the use of the ascent system 1, by limiting the setting times in place of the back support means 7.

According to an alternative embodiment, shown in Figures and 5, the ascent system 1 comprises means 19 for holding the head. In this way, in the event of tilting backwards, the head and the nape of the user 3 are maintained, avoiding the extension of the head of the user 3, which can cause compressions on the carotid sinus , and thus favor the occurrence of harness syndrome 4.

Advantageously, the back support means 7 follows the shape of the head, having dimensions similar to those of the head. As shown, the head holding means 19 came integrally with the back holding means 7, but according to other variants not shown, the head holding means 19 are assembled on the back holding means 7 .

According to embodiments, not shown, the means 19 for holding the head is provided with a damping element promoting comfort of use, and damping any impact on the cervical, fragile area of the user 3.

As can be seen in the figures, the ascent system 1 has a connecting device 20, such as for example a spring ring, capable of connecting the harness 4 with the back support means 7. As shown in Figure 2, the connecting device 20 is disposed on the rear face 13, preferably in an area located at the lumbar, so as not to hinder the movements of the user 3. The back support means 7 is thus able to be easily connected to the harness 4, which facilitates its installation. In addition, such a connection between the back support means 7 and the harness 4, promotes the joining of the back support means 7 on the back of the user 3, in particular in the vertical and horizontal direction. According to other embodiments, not shown, the back support means 7 comprises additional connecting devices 20, able to allow the attachment of tools, accessories, bags, or bag of water.

As shown in Figures 2 and 3, the retaining means 8 is intended to be made integral with the back support means 7, by means of the first extreme part 9. The retaining means 8 is thus fixed to the back support means 7 on the rear face 13, and is able to extend outside the back support means 7, advantageously upwards. The second extreme part 10 comprises a light 22, intended to receive the main cable 2. The light 22 is through, and includes a closed contour capable of forming a closed loop 21, shown in bold line in FIG. 3. The closed loop 21 is capable of being opened, in order to make the main cable 2 easily insertable or removable from this closed loop 21, which facilitates the mounting of the ascent system 1. The main cable 2 is able to slide along this light 22, leaving a functional clearance between the main cable 2 and the loop 21. By this means, a sliding pivot connection is made between the main cable 2 and the second part. 10 extreme, which allows the movement of the user 3 along the main cable 2.

Due to the encirclement of the cable within the loop 21, the main cable 2 is trapped and therefore cannot exit. A user 3 using the ascent system 1 with the main cable 2 is then able to be kept in the position of use, in the vicinity of the main cable 2. A rearward tilting of the user 3 is thus avoided, because due to the imprisonment of the main cable 2 within the opening 22, a retention takes place by contact with the main cable 2 and the loop 21. The restraint is therefore carried out passively, in other words independently of any action by the user 3. The ascent system 1 is able to protect the user 3 against the risk of a consecutive harness syndrome 4, in the event of loss of consciousness.

According to the embodiment described, the retaining means 8 comprises a bar 23 and a sliding device 24, both linked by a quick coupling means, such as for example a carabiner 25. A portion of the bar, corresponding the first part 9 extreme integral with the back support means 7. The sliding device 24 corresponds to the second extreme part 10 of the retaining means 8. In this way, the retaining means 8 and the back holding means 7 are slidably linked with the main cable 2.

The bar 23 advantageously has a tubular or polygonal section, for example rectangular, advantageously profiled in order to facilitate its production. The bar 23 extends above the head of the user 3, and defines a curvature configured so that the second extreme part 10 can reach the main cable 2. Sufficient clearance is left between the head of user 3 and the bar 23, so as to avoid any collision between user 3 and the bar 23.

As shown in Figure 2, the back support means 7 is for example provided with a hollow rod 26, fixed to the back support means 7, for example by welding, or through the reinforcement 14 Advantageously, the hollow rod 26 has a circular, or polygonal cross section, slightly larger than the cross section of the bar 23, making it suitable for fitting within the hollow rod 26.

To allow a configuration adapted to the size of the user 3, the bar 23 is advantageously adjustable relative to the hollow rod 26. The bar 23 thus comprises first latching means, for example balls 27 mounted on a spring, capable of being clipped into the second latching means, like holes 28, arranged on the hollow rod 26. The rapid installation of the bar 23, which can be carried out without tools. The holding system 1 is then removable and reassemblable by a single person.

According to the embodiments shown, the sliding device 24 comprises a pulley 29 and a flange 30, both linked by the carabiner 25. In this way, the light 22 is formed by the edge of the pulley 29, the flange 30, and the carabiner 25. Such an arrangement facilitates the sliding of the main cable 2 relative to the bar 23, but also allows insertion or release of the main cable 2 within the slot 22. The user 3 can therefore unhook the back support means 7, relative to the main cable 2, without scrolling the entire main cable 2 within the slot 22. A single intervention on the carabiner 25, so as to open it, allows the 'attachment or detachment of the retaining means 8 relative to the pulley 29 and the flange 30. The establishment of the retaining means 8 relative to the main cable 2 requires only a reduced number of movements.

The establishment by the user of the ascent system comprises the following steps.

The user puts on his back the back support means 7, in this case the plate 11. The user passes the main cable 2 within the light 22 provided for this purpose, that is to say in the sliding device 24, which connects to the retaining means 8 using the carabiner 25. In the case of a plate linked to a hollow rod 26, the user threads the bar 23 therein. connecting device 20, the harness 4 is connected to the plate 11.

In the following description, the system is described according to a second embodiment, shown in the figures from 7 to 11.

In this second embodiment, the ascent system 1, as described above, is provided with an ascent device 31 along a main cable 2.

As illustrated in Figures 7, 8 and 9, the ascent device 31 comprises a stirrup 32 having a section with closed contours defining an opening 33 defined by a lower side 34 and an upper side 35 opposite, and 36 lateral sides which connect the lower side 34 to the upper side 35.

The stirrup 32 preferably includes a clamping means 37. The clamping means 37 comprises, according to the embodiments described, a female clip 38 and a male clip 39, each connected to one of the lateral sides 36.

The female fastener 38 comprises a closure 40 with pawls, and the male fastener 39 comprises a notched strap 41, capable of coinciding with the closure 40 with pawls.

The upper side 35 of the stirrup 32 comprises a fixing support 42 defining, according to the variants of the second embodiment shown, a first point 43 of fixing and a second point 44 of fixing.

The ascent device 31 also includes a retaining element 45 configured to be secured, at a first end 46, to the first point 43 for fixing the stirrup 32.

The retaining element 45 comprises a rod 47. According to the embodiments shown, the rod 47 extends from the first end 46 to a second end 48 of the retaining element 45. The rod 47 has, for example, a general shape of a tube with a circular or polygonal section.

The rod 47 comprises several segments 49 which, assembled end to end, define the general shape of the rod 47. The rod 47 is, according to the embodiment shown, divided into five segments. The rod 47 also includes sleeves 50 able to be disposed between each segment 49 and configured to assemble the segments 49 to each other. The sleeves 50 are able, according to one embodiment, to center the segments 49 relative to each other. According to a different embodiment, the sleeves 50 are able to fix the segments 49 together. Alternatively, the sleeves 50 and the segments 49 of the rod 47 form a one-piece element.

The retaining element 45 comprises an elastic cable 51, configured to be integral with the first end 46 and the second end 48 of the retaining element 45. The elastic cable 51 is placed inside the segments 49 of the rod 47.

The elastic cable 51 thus allows disassembly of the segments 49, as shown in FIG. 9 for a variant of the second embodiment of the ascension system 1, without losing a segment 49 and rapid assembly of the segments 49.

According to the variant of the second embodiment, shown in Figures 9 to 11, the ascent device 31 comprises a cable 52 of traction, configured to be secured, at a first end 53, the second point 44 of attachment stirrup 32.

A user 3 wishing to climb upwards along the main cable 2, using an ascent device 31 as described above, fixes the second end 48 of the retaining element 45 and a second end 54 of the traction cable 52 to a first self-locking device 55. The first self-locking device 55 is arranged on the main cable 2. The segments 49 of the ascent device 31 are previously assembled. Such a configuration is shown, for the variant of the second embodiment of the ascent system 1, in FIGS. 10 and 11.

The first self-locking device 55 is a device capable of sliding along the main cable 2, surrounded by the first self-locking device 55, in one direction and capable of locking onto the main cable 2 in a second direction. Conventionally, the first self-locking device 55 is produced by means of a simple cord surrounding the cable, a part comprising teeth capable of being anchored in the main cable 2, or a device comprising a set of rollers and springs.

The user 3 inserts a first foot 56 of a first leg 57 into the opening 33 of the stirrup 32. The first foot 56 rests on the lower side 34 of the stirrup 32 which, according to the modes of illustrated embodiments, has a planar surface of size larger than the size of a surface of the upper side 35 and lateral sides 36. User 3 thus has a wide and stable support.

The stirrup 32 is preferably made of a sufficiently rigid material, so as not to deform under the weight of the user 3 and his equipment. The first leg 56 of the user 3 is thus not compressed by the deformation of the stirrup 32, which reduces the compression points, for example during discomfort.

The user 3 then closes the means 37 for clamping the stirrup 32 against his first foot 56, in order to secure his first foot 56 to the stirrup 32. The risk of separation of the first foot 56 from the caliper 32, which can cause a limb in suspension is thus reduced.

User 3 inserts a second foot 58 of a second leg 59 into a footrest 60.

According to the variant of the second embodiment shown in Figures 10 and 11, the footrest 60 comprises a stirrup 32 identical to the stirrup 32 of the device 31 for climbing.

The footrest 60 is secured to a second self-locking 61 disposed on the main cable 2.

User 3 rests his weight and that of his equipment on his first foot 56. The weight of user 3 and his equipment is then supported by the first self-locking device 55, by means of the device 31 ascent, the first self-locking device 55 preventing the first foot 56 from sliding along the main cable 2.

The ascending device 31 transmits the force exerted on the stirrup 32, downwards, to the first self-locking device 55 by means, according to the second embodiment illustrated in FIGS. 7 and 8, of the element 45 holding and traction cable 52, according to the variant of the second embodiment illustrated in FIGS. 9 to 11.

The holding element 45, for the second embodiment, or the traction cable 52, for the variant of the second embodiment, is thus able to withstand a traction force, respectively exerted between the first end 46 and the second end 48 or the first end 53 and the second end 54, so as to block the first self-locking 55 and prevent the device 31 from sliding along the main cable 2.

The user 3 then bends his second leg 59, sliding the second self-locking 61, upwards, along the main cable 2 and mounting his second foot 58 and the footrest 60, integral with his second foot 58 along the main cable 2, as shown in Figure 10.

User 3 then rests his weight and that of his equipment on his second foot 58. The weight of user 3 and his equipment is then supported by the second self-locking device 61, by means of the footrest 60, the second self-locking 61 preventing a sliding of the second leg 58 along the main cable 2.

The user 3 then bends his first leg 57, sliding the first self-locking device 55, upwards, along the main cable 2 and mounting his first foot 56 and the ascent device 31, secured to his first foot 56, along the main cable 2, as illustrated in FIG. 11.

The ascending device 31 transmits the force exerted on the stirrup 32, upwards, to the first self-locking device 55, by means of the rod 47 of the retaining element 45, integral with the first end 46 and of the second end 48. The rod 47 is thus able to withstand a compressive force exerted between the first end 46 and the second end 48, so as to slide the first self-locking 55 along the main cable 2. This rigidity, combined with the back support means 7 and the retaining means 8, gives the user 3 support in position, allowing him to avoid finding himself in a situation of suspension, conducive to the appearance of a harness syndrome.

According to different modes of use, a third self-locking device is arranged around the main cable 2 or around a belay cable, making it possible to prevent a fall of the user 3 if the first self-locking device 55, the second self-locking 61 or the two self-locking 55, 61 would no longer ensure their locking function of the main cable 2.

The holding element 45 thus allows a user to climb along a main cable 2, arranged substantially vertically, the user 3 being in a substantially vertical position, the feet 56, 58 directed towards the low.

The retaining element 45 allows a user 3 to mount the first self-locking device 55 along the main cable 2, using only his first foot 56 inserted in the stirrup 32.

The holding element 45 also allows a user 3 to climb along the main cable 2 with the sole force of his legs 57, 59 without using his upper limbs.

The ascent system 1 has the following advantages in particular:

ease of installation and use;

the hands of the user 3 are left free, allowing him for example to work and move along the main cable 2 safely;

adaptability to existing harnesses 4 and harnesses with or without harnesses, as well as ascent and abseiling devices;

passive protection of the user 3 against the risk of being in the tilted position, and therefore of reducing the risk of the occurrence of harness syndrome 4.

The ascent system 1 finds applications in the work of rope access technicians, or building mountaineers, rope access technicians, and more generally people carrying out work at height, for industry, building, public works, events, for example during construction, repair, restoration, cleaning, control or expertise, brush cutting or cutting trees, installation of security systems or scaffolding, the installation of advertising tarpaulins, or even fumigation work, the installation of nets.

The ascent system 1 also finds applications in sporting activities, for example climbing, speleology, or in shooting activities during sporting events, or in shooting in environments with difficult access, for example on the cliff.

Claims (10)

1. Ascent system (1) along a main cable (2), the ascent system (1) comprising a back support means (7) intended to be secured to the back of a user (3 ), the ascent system (1) being characterized in that it further comprises a retaining means (8) comprising a first end part (9) and an extreme second part (10), the first part ( 9) extreme being intended to be integral with the back support means (7), the second extreme part (10) comprising a light (22) intended to receive the main cable (2), so that the second extreme part (10) can slide along the main cable (2). 2. System (1) according to claim 1, characterized in that the retaining means (8) comprises a bar (23), the first end part (9) being a portion of the bar (23) intended to be integral with the back support means (7), the second end part (10) comprising a sliding device (24). 3. System (1) according to claim 1 or 2, characterized in that the means (7) of back support is a plate (11) having a shape adapted to match the back of the user (3). 4. System (1) according to any one of the preceding claims, characterized in that the back support means (7) further comprises means (19) for holding the user's head (3). 5. System (1) according to any one of claims 2 to 4, characterized in that the bar (23) extends from the first part (9) extreme, in a substantially rectilinear direction, then has a curvature, the bar (23) extending above the head of the user (3) when the first extreme part (9) is secured to the back support means (7), this back support means (7) being secured to the user back (3). 6. System (1) according to any one of claims 2 to 5, characterized in that the back support means (7) comprises a hollow rod (26), the bar (23) being fitted within the rod ( 26) hollow, the hollow rod (26) comprising at least one hole (28) cooperating with at least one ball (27) disposed on the bar (23). 7. System (1) according to any one of claims 1 to 6, characterized in that the lumen (22) comprises a contour forming a closed loop (21) able to be opened. 8. System (1) according to any one of the preceding claims, characterized in that the back support means (7) is made integral with the back of the user (3), by means of straps (16) and / or by a fixing belt (18). 9. System (1) according to any one of the preceding claims, characterized in that the back support means (7) comprises a connecting device (20) intended to link the back support means (7) to a harness ( 4). 10. System (1) according to any one of the preceding claims, characterized in that it comprises a device (31) for climbing along a main cable (2), this device further comprising a stirrup (32), a holding element (45) configured to be integral, at a first end (46), with the stirrup (32) and intended to be integral, at a second end (48), with a first self-locking device (55) able to be placed on the main cable (2), the holding element (45) comprising a rod (47), able to resist a compressive force exerted between the first end (46) and the second end (48), so as to slide the first self-locking device (55) along the main cable (2), the rod (47) of the retaining element (45) comprises several independent segments (49).