WO2019234275A1 - Pont-grue extensible pour véhicule - Google Patents

Pont-grue extensible pour véhicule Download PDF

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Publication number
WO2019234275A1
WO2019234275A1 PCT/ES2019/070377 ES2019070377W WO2019234275A1 WO 2019234275 A1 WO2019234275 A1 WO 2019234275A1 ES 2019070377 W ES2019070377 W ES 2019070377W WO 2019234275 A1 WO2019234275 A1 WO 2019234275A1
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WO
WIPO (PCT)
Prior art keywords
fixed
crane bridge
mobile structure
beams
vehicles
Prior art date
Application number
PCT/ES2019/070377
Other languages
English (en)
Spanish (es)
Inventor
Juan Carlos DÍAZ GARCÍA
Original Assignee
Diaz Garcia Juan Carlos
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 Diaz Garcia Juan Carlos filed Critical Diaz Garcia Juan Carlos
Publication of WO2019234275A1 publication Critical patent/WO2019234275A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/54—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using cranes for self-loading or self-unloading
    • B60P1/5438—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using cranes for self-loading or self-unloading with a moveable base
    • B60P1/5442—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using cranes for self-loading or self-unloading with a moveable base attached to the roof of the vehicle

Definitions

  • the present invention relates to an extendable crane bridge for vehicles comprising a fixed structure, a mobile structure coupled to the fixed structure, a primary carriage coupled to the mobile structure, and a secondary carriage coupled to the primary carriage; where the mobile structure is configured to move in a longitudinal direction; where the primary carriage is configured to move in a longitudinal direction; and where the secondary carriage is configured to move in a transverse direction.
  • the secondary carriage includes a hitching device to handle a load to carry out the loading and unloading of the vehicle in which the crane bridge of the invention has been installed.
  • the object of the invention is that the assembly of the primary and secondary carriage can be mobilized in a guided manner along the mobile structure and also along the fixed structure; both in a deployed position of the mobile structure in which at least a part of it is located outside the fixed structure, and in a folded position in which the entire mobile structure is housed within the fixed structure.
  • extendable crane bridges are known for vehicles that generally comprise a fixed structure, a mobile structure coupled to the fixed structure, a primary car coupled to the mobile structure and a secondary car coupled to the primary car.
  • Patent with publication No. FR2275333 describes an extensible crane comprising a fixed structure formed by three frames supporting two longitudinal joists, on which fixed guide profiles are mounted through sleeves, so that on said fixed guide profiles first carriages that support a transverse joist can be moved on which a secondary carriage that carries a lifting lathe provided with a hook is moved.
  • the crane bridge also incorporates a removable structure formed by two removable guide profiles that can be mounted on sleeves thus protruding outward from the vehicle's cargo space. These removable guide profiles incorporate at their end, by joints, telescopic stabilizer brackets. The first cars can also move on said removable guide profiles.
  • Patent with publication number WO2012085327 describes an extensible crane in a vehicle where the transport carriage can circulate guided either by a fixed structure, or by a mobile structure, and said structures are telescopically coupled.
  • the patent with publication number NL9500058 refers to an extendable crane bridge mounted on a vehicle where a transport carriage can circulate guided either by a fixed structure, or by a mobile structure, but said structures are not telescopically coupled.
  • the deployed mobile structure is supported by hydraulic cylinders, but these do not join the mobile structure at its final end, and also do not settle on the ground, but on the vehicle itself.
  • the patent with publication number CN201283821 refers to an extendable crane bridge mounted on a vehicle where a fixed structure and a mobile structure are arranged that are telescopically coupled, but a transport carriage can only circulate guided by the mobile structure and Not because of the fixed structure.
  • an extendable crane bridge for vehicles comprising:
  • a mobile structure coupled to an upper part of the fixed structure; where the mobile structure is configured to move in a longitudinal direction.
  • a primary carriage that is configured to move in a longitudinal direction.
  • a secondary car coupled to the primary car through transverse guidance; where the secondary carriage is configured to move in a transverse direction.
  • the extensible crane bridge of the invention further comprises a telescopic guide linking the fixed structure and the mobile structure that includes two parallel tubular beams and a crossbar; wherein said telescopic guide comprises parallel longitudinal beams in solidarity with the fixed structure and parallel tubular beams, within which the parallel longitudinal beams are housed.
  • the extendable crane bridge comprises a translation system configured to mobilize a set selected from: a first set formed by at least the primary carriage, and a second set formed by at least the primary carriage, and the mobile structure; where the translation system is fixed to the fixed structure.
  • the extensible crane bridge comprises a first mechanical interlocking device that links the primary carriage and the mobile structure; where in an active position of the first mechanical interlocking device, the primary carriage and the transom of the mobile structure are anchored to each other; while in an inactive position of the first mechanical interlocking device, the primary carriage is not anchored to the mobile structure.
  • the parallel tubular beams of the mobile structure comprise first sections and a few second sections integral to the transom of the mobile structure; where the first sections and the second sections are related by means of a second mechanical interlocking devices; and where in an active position of the second mechanical interlocking devices the first sections and the second sections are anchored to each other, and in an inactive position of the second mechanical interlocking devices the first sections and the second sections are not anchored to each other. .
  • Each second mechanical interlocking device comprises:
  • An oscillating cam a second spring, a support configured to accommodate the second spring, and an axis on which the oscillating cam articulates; where said axis is integral to the support, at the same time said support is fixed to the first section of the mobile structure; and where the oscillating cam is configured to rotate in a direction of rotation around the axis against the resistance of the second spring or to rotate in the other direction of rotation around the axis by the action of said spring.
  • the oscillating cam of the second mechanical interlocking device comprises an inclined plane that ends at one end in the female element; wherein said inclined plane is configured to contact the male element when the oscillating cam is rotated against the resistance of the second spring.
  • the primary carriage comprises a stop that faces one end of the oscillating cam; where the stop is configured so that during the movement in a direction of the primary carriage said a stop impacts on said end of the oscillating cam generating an articulated movement of said oscillating cam around the axis causing the disengagement between the male element and the female element.
  • the first mechanical interlocking device comprises an articulated pulling mechanism, a cable, a jacket where the cable is housed and guided, a latch, a first compression-working spring, a housing in which said first spring is housed, a supportive support to the car, and a hole located in the transom of the mobile structure; where one end of the cable is connected to the articulated pull mechanism and another end of said cable is connected to the latch; where said latch is facing the hole of the mobile structure; and where said latch is configured to fit into a hole in an anchor position.
  • the support devices comprise at least some third hydraulic cylinders fixed in corner areas of the mobile structure; where the third hydraulic cylinders are located in line with vertical beams of the fixed structure; and where said third hydraulic cylinders include extreme bases configured to rest on a floor surface.
  • the support devices further comprise telescopic structures in parallel to the third hydraulic cylinders; where said telescopic structures are also fixed to the corner areas of the mobile structure; and where ends of the telescopic structures are attached to the extreme bases of the third hydraulic cylinders.
  • the extendable crane bridge comprises two second hydraulic cylinders in contrast that are fixed to the primary carriage; where said second hydraulic cylinders are configured to move the secondary car.
  • the second hydraulic cylinders are fixed to an upper beam arranged in a transverse direction; where said upper beam is integral to the primary car.
  • the parallel longitudinal beams of the telescopic guide are joined by one of their ends to a part of the fixed structure.
  • the fixed structure comprises a lower base, an upper base, pairs of vertical beams as struts, upper transverse beams that are attached to the vertical beams, and diagonal beams as reinforcing elements; where the lower base comprises two longitudinal beams and a transverse beam; and where the upper base comprises longitudinal beams and a transverse beam that is attached to a pair of extreme vertical beams.
  • the parallel longitudinal beams of the telescopic guide are joined by one of its ends to the transverse beam that is attached to the pair of extreme vertical beams.
  • the translation system comprises a main telescopic structure in the longitudinal direction, first hydraulic cylinders configured to mobilize said main telescopic structure in the longitudinal direction and a hitch mechanism that connects the primary carriage (with the main telescopic structure by means of a connection device .
  • the main telescopic structure comprises an internal profile, a first external profile, a second external profile and a third external profile; where these three external profiles comprise a tubular structure and are coupled around the internal profile.
  • the Main telescopic structure is fixed to the fixed structure through the internal profile.
  • the first external profile is fixedly attached to the internal profile, while the second external profile and the third external profile are configured to move guided along the internal profile by means of the first hydraulic cylinders.
  • One of the first two hydraulic cylinders is fixed to the second external profile and one end of a rod of said first hydraulic cylinder is fixed to the first external profile; while the other first even hydraulic cylinder is fixed to the third external profile, while one end of a rod of said first hydraulic cylinder is fixed to the second external profile.
  • connection device comprises a cable that is wound by its end sections opposite to two reel mechanisms fixed to end zones of the third external profile of the main telescopic structure; where the coupling mechanism is fixed to said cable.
  • the reel mechanisms include synchronized motor elements that are configured to move the coupling mechanism in two directions of travel parallel to the third external profile; where when the cable is wound in one of the two reel mechanisms by rotating the reel mechanisms driven by the motor elements in a direction of rotation, it is simultaneously unwound from the other reel mechanism evenly, and vice versa.
  • the internal profile of the telescopic structure is fixed to the upper transverse beams of the fixed structure by means of lugs; wherein the third external profile of said fixed structure comprises an open configuration that includes a full length pipe that is aligned with said lugs.
  • the extensible crane bridge of the invention is designed in such a way that it makes it possible to take advantage of the entire loading surface of a vehicle platform on which the crane bridge is installed.
  • the mobile structure varies the longitudinal travel of the bridge projecting on the outside of the vehicle up to 50% of its total length or more, allowing the loading and unloading of all types of materials. For example, when the crane bridge has a length of six meters, it has the capacity to increase its total length by three meters, finally having a total length of nine meters when the crane bridge is fully deployed where the mobile structure has moved in its maximum extension
  • a second mobile structure materialized by the primary and secondary carriage assembly will be available.
  • This set of the two cars will be provided with transverse and longitudinal movement generated by a hydraulic system, so that to raise and lower some loads, a hydraulic motor is provided with the ability to reverse the direction of rotation; where said hydraulic motor is fixed to the secondary car.
  • the crane bridge of the invention is installed in industrial vehicles for the transport of goods, so that said crane bridge has a number of advantages over those currently existing, as set forth below:
  • the main advantage is that the driver of a vehicle carrying the bridge of the invention is capable of carrying out loading and unloading operations (even of large weights) by himself, without relying on any kind of help, and performing this type working, even when the vehicle is on uneven ground transversely or longitudinally, without any effort; contrary to what happens with the loading and unloading platforms that are located on the back of the vehicles.
  • the invention already has the capacity to act as a conventional crane bridge, and the loads can be traced both inside the vehicle and in the unloading area outside the vehicle.
  • the versatility of the crane bridge makes it possible to load large loads and volumes in a truck through the rear door of the vehicle.
  • a crane bridge that is projected outside three meters, has the capacity to load and unload a tourism of more than five meters long (using special hooks for this type of loads).
  • high quality steels are preferably used to provide high strength performance and as a consequence of it a smaller volume and also a lower weight.
  • the weight of the crane bridge is inversely proportional to the weight of the load, that is, the more the bridge weighs the less crane we can carry. Therefore, materials that offer the necessary strength and provide the least possible weight are used.
  • Figure 1. Shows a perspective view of the extendable crane bridge for vehicles, object of the invention.
  • the crane bridge of the invention is applicable to a vehicle for carrying out the loading and unloading of goods.
  • Figure 2. Shows a perspective view of a fixed structure that is part of the extensible crane bridge of the invention, where said fixed structure is joined in solidarity with the vehicle.
  • Figure 3. Shows an elevation view of a vehicle that includes the crane bridge that is in an unfolded position with a suspended load of the crane bridge.
  • Figure 4.- Shows an elevation view of the crane bridge supported by a vehicle platform.
  • Figure 5. It shows a plan view of the vehicle crane bridge in an unfolded position, where an intermediate positioning of a primary car coupled on a mobile structure is highlighted.
  • Figure 6. Shows a view similar to that shown in Figure 5, where the primary carriage is located in a different position than the one shown in Figure 5 ..
  • Figure 7. It shows another plan view of the extendable crane bridge for vehicles in an unfolded position, where some second hydraulic cylinders that are used to move a secondary car coupled on the primary car stand out.
  • Figure 8. It shows an elevation view of a part of the extendable crane bridge, where a first mechanical interlocking device configured to anchor or release the primary carriage with respect to the mobile structure is highlighted.
  • Figure 9. Shows an elevation view of a second mechanical interlocking device configured to anchor or release some first sections with respect to a few second sections that are part of one another and other sections of the mobile structure.
  • Figures 10a to 10c.- Show views of a part of a translation system of the primary car and the mobile structure.
  • the extendable crane bridge 1 for vehicle 2 comprises a fixed structure 3, a movable structure 4 coupled on the fixed structure 3, a primary transport carriage 5 coupled on the mobile structure 4 and a secondary carriage 6 coupled on the primary carriage 5.
  • the bridge of the invention is configured to be installed on a platform 2a of the vehicle 2 to be able to carry out the loading and unloading of goods, so that the vehicle 2 with the extendable crane bridge 1 is intended for the transport of goods.
  • the mobile structure 4 is coupled to the fixed structure 3 by means of telescopic guides 7, so that the mobile structure 4 can be moved in a longitudinal direction, by means of the primary carriage 5 in combination with a translation system that includes a telescopic structure main 22, first hydraulic cylinders 8a, 8b configured to mobilize said main telescopic structure 22 and a coupling mechanism 34 that connects the primary carriage 5 with the main telescopic structure by means of a connection device; all according to a system that will be described later.
  • Said translation system is also intended to be able to move the primary carriage 5 in a relative and independent manner with respect to the mobile structure 4.
  • the first carriage 5 is coupled on the mobile structure 4 by two longitudinal guides 9, so that the primary carriage 5 can be moved in a longitudinal direction along the mobile structure 4 and also along the fixed structure 3 by mediation of parts of the mobile structure 4 as will be described later.
  • the secondary carriage 6 is coupled on the primary carriage 5 by two transverse guides 10, so that said secondary carriage 6 can be moved in a transverse direction that is perpendicular to the longitudinal directions in which the mobile structure 4 and carriage can be moved primary 5.
  • the secondary carriage 6 is moved by two second hydraulic cylinders 11.
  • a hydraulic motor 12 is configured on the secondary carriage 6 configured to raise and lower a load 13 constituting the goods to be transported by the vehicle 2.
  • a load 13 is placed on a support 14 that is anchored in a hook 15 connected to a cable 16 coupled on a rotor 17 that is connected to an axis of the hydraulic motor 12, so that when the rotor 17 rotates in one direction the load 13 rises and when the rotor 17 rotates in the other direction the load drops.
  • the fixed cage-like structure 3 comprises a lower base, an upper base, pairs of vertical beams 3c as struts, upper transverse beams 3d and diagonal beams 3e as reinforcing elements; where in one embodiment of the invention all the beams of the fixed structure 3 comprise a tubular section of rectangular shape, without discarding other sections.
  • the lower base of the fixed structure 3 comprises two longitudinal beams 3a and a transverse beam 3a ’, which are arranged in the same horizontal plane; wherein said lower base is fixed to the platform 2a of the vehicle 2 by means of screws to unify the fixed structure assembly 3 and platform 2a of the vehicle 2, without discarding other joining means.
  • the upper base of the fixed structure 3 comprises pairs of longitudinal beams 3b and a transverse beam 3b ’arranged in the same horizontal plane.
  • the transverse beam 3b ’ is connected to a pair of extreme vertical beams 3c arranged in correspondence with a front part of the platform 2a of the vehicle 2.
  • the purpose of the vertical beams 3c is to support the weight of the movable structure 4 and the load 13 that hangs from the cable 16, and in general the whole of the crane bridge 1 and the load 13.
  • the upper transverse beams 3d are attached to the ends of the vertical beams 3c and are intended to prevent deformations due to the stresses generated between the two sides of the fixed structure 3.
  • each transverse beam upper 3d joining the ends of each pair of extreme vertical beams 3c arranged in correspondence with the front part of the platform 2a of the vehicle 2 said upper transverse beam 3d is attached to a vertical part of said platform 2a.
  • the diagonal beams 3e have the function of reinforcing the entire perimeter of the fixed cage-shaped structure 3, and also help to mitigate the fatigue caused by the weight and inertia of the loads 13.
  • the mobile structure 4 comprises a reinforcement formed by two parallel tubular beams 4a and a crossbar 4b that joins the ends of the parallel tubular beams 4a; the mobile structure 4 also comprises two third telescopic hydraulic cylinders 18 arranged in vertical directions, which are fixed in corner areas of the mobile structure 4 where its two parallel tubular beams 4a and the crossbar 4b converge, so that the two third cylinders Hydraulics 18 are configured to be able to stabilize the movable structure 4 when it is in an unfolded position that is at least partly extended outside the fixed structure 3; where in this situation ends of the stems of the third hydraulic cylinders 18 rest on a floor surface.
  • the parallel tubular beams 4a of the movable structure 4 are telescopically coupled in the cantilever parallel longitudinal beams 19 joined by one of their ends to the transverse beam 3b ’of the upper base of the fixed structure 3; wherein the parallel longitudinal beams 19 are embedded within the parallel tubular beams 4a of the movable structure 4 which is guided during its longitudinal mobility in said parallel longitudinal beams 19.
  • both the fixed structure 3 and the mobile structure 4 have a length of six meters, so that in this situation, the parallel tubular beams 4a of said mobile structure 4 will slide over the parallel longitudinal beams 19 a maximum of three linear meters which will be the maximum external reach of the crane bridge assembly 1 behind the rear of the platform 2a of the vehicle 2; all this taking as an initial reference a resting position of the mobile structure 4 when it is fully folded inside the fixed structure 3.
  • the parallel tubular beams 4a of the mobile structure 4 comprise first sections 20 of shorter length (around one meter) and second sections 21 of longer length (around five meters) attached to the crossbar 4b, where the parallel tubular beams 4a of the movable structure 4 may be deployed a total of three meters.
  • the mobile structure 4 of the crane bridge 1 is folded and deployed by the impulse of the primary carriage 5, which develops a longitudinal movement of translation caused by the first hydraulic cylinders 8a, 8b, which during the unfolding operation, cause a longitudinal movement of said primary carriage 5 towards the outside of fixed structure 3, and during the operation folding the primary carriage 5 will move into the fixed structure 3 by dragging the mobile structure 4.
  • the first two hydraulic cylinders 8a, 8b are used in combination with the main telescopic structure 22.
  • Said first hydraulic cylinders 8a, 8b are linked to the main telescopic structure 22 arranged in a longitudinal direction, which in turn is symmetrically fixed to central areas of the upper transverse beams 3d of the fixed structure 3.
  • the main telescopic structure 22 comprises an internal profile 22a, a first external profile 22b, a second external profile 22c, and a third external profile 22d; where these three external profiles 22b, 22c and 22d comprise a tubular structure and are coupled around the internal profile 22a, so that the whole of the main telescopic structure 22 is fixed to the upper transverse beams 3d of the fixed structure 3 by means of the internal profile 22a that is fixed to said upper transverse beams 3d by lugs 35.
  • the first external profile 22b is fixedly attached to the internal profile 22a, while the second external profile 22c and the third external profile 22d are configured to move guided along the internal profile 22a by means of the first hydraulic cylinders 8a, 8b.
  • its third external profile 22d comprises an open tubular structure to save the lugs 35 that join the internal profile 22a to the fixed structure 3.
  • said third external profile 22d includes a pipe 36 in its entire extension that is aligned with said lugs 35.
  • One of the first two hydraulic cylinders 8a is fixed to the second external profile 22c and one end of a rod of said first hydraulic cylinder 8a is fixed to the first external profile 22b; while the other first hydraulic cylinder 8b is fixed to the third external profile 22d, while one end of a rod of said first hydraulic cylinder 8b is fixed to the second external profile 22c.
  • the hitching mechanism 34 is fixed to a tensioned cable 37 which is wound by its opposite sections opposite two reel mechanisms 38a, 38b fixed to end areas of the third external profile 22d.
  • Said reel mechanisms include synchronized motor elements to be able to move the coupling mechanism 34 in two directions of travel in parallel to the third external profile 22d, so that when the cable 37 is wound in one of the two reel mechanisms 38a rotating the Reel mechanisms 38a, 38b driven by the motor elements in a direction of rotation, simultaneously unwind from the other reel mechanism 38b evenly, and vice versa.
  • the primary carriage 5 is pulled in the longitudinal direction; highlighting that when the first cylinders 8a, 8b are activated, the movable parts of the main telescopic structure 22 that carry the mobile structure 4 and also the primary carriage 5 move with them.
  • the coupling mechanism 34 together with the primary carriage 5 can be placed in any position along the cable 37, so that when the main telescopic structure 22 is fully folded into the fixed structure 3, it is possible to manipulate the load 13 a the entire length and width of said fixed structure 3 of the vehicle 2.
  • the extendable crane bridge 1 could work even with closed doors of the vehicle 2 when they are incorporated in the rear part of the platform 2a of the vehicle 2.
  • main telescopic structure 22 is partially folded or fully deployed behind the vehicle 2, it is also possible to manipulate the load 13.
  • the first cylinder 8a is configured to move the set of the second external profile 22c and third profile 22d a distance of 1.5 meters, while the other first even cylinder 8b is configured to move the third external profile 22d a distance of 1.5 meters taking as a relative reference the position of the second external profile 22c, so that in the fully deployed position a longitudinal distance of 3 meters is reached behind the vehicle 2.
  • 9 meters a movement of 6 meters made by the two reel mechanisms 38a, 38b, and a movement of 3 meters made by the first cylinders 8a, 8b.
  • the primary transport carriage 5 comprises a frame structure formed by two stringers 5a and two crossbars 5b that rest on the parallel tubular beams 4a of the mobile structure 4, so that the primary carriage 5 is guided and slides (through its two crossbars 5b) during its movement on the parallel tubular beams 4a of the movable structure 4 and also on the parallel longitudinal beams 19 integral with the fixed structure 3.
  • the secondary carriage 6 On the stringers 5a of the primary carriage 5 the secondary carriage 6 is coupled, which consists of a flat platform that has two profiles 6a on its underside that act as a support and sliding track on the stringers 5a of the primary carriage 5; where the secondary carriage 6 is configured to move in a transverse direction to
  • the hydraulic motor 12 which can rotate in two directions to allow the lifting and lowering of the loads 13.
  • the primary carriage 5 will begin to move on the two parallel tubular beams 4a of the movable structure 4 which will remain fully folded until the moment in which said primary carriage 5 reaches the crossbar 4b of the mobile structure 4.
  • a mechanical anchor of the primary carriage 5 with the cross member 4b of the mobile structure 4 will be produced.
  • Said first mechanical interlocking device is responsible for fixing or releasing the carriage 5 with respect to beam 4b of the mobile structure 4.
  • the first mechanical interlocking device 25 comprises an articulated pulling mechanism 25a, a cable 25b, a jacket 25c where the cable 25b is housed and guided, a latch 25d, a first spring 25e that works under compression, a housing 25f in which it is said first spring 25e housed, and a support 25g integral to the carriage 5; where one end of the cable 25b is connected to the articulated pulling mechanism 25a and where another end of the cable 25b is connected to the latch 25d.
  • said latch 25d is fitted within a hole 26 of the cross member 4b of the movable structure 4 by the action of the first spring 25e; wherein said hole 26 forms part of the first mechanical interlocking device 25.
  • the articulated pulling mechanism 25a can adopt two stable positions: the first stable anchoring position described in which the primary carriage 5 is anchored to the beam 4b; and a second position in which the primary carriage 5 is not anchored to the beam 4b; where this second position is reached by acting on the articulated pulling mechanism 25a against the resistance of the first spring 25e by disengaging the latch 25d from the hole 26 located in the crossbar 4b of the movable structure 4.
  • the operating cycle of the first mechanical interlocking device 25 is as follows. With the extendable crane bridge fully collected or folded, and the primary carriage 5 positioned as close as possible to the cabin of the vehicle 2 (left part of the vehicle 2 as shown in Figure 3), the crane bridge deployment maneuver is initiated .
  • connection device that causes the movement of the primary carriage 5 on the parallel tubular beams 4a is activated until it meets the crossbar 4b. It is at this time that the anchor between the primary carriage 5 and the crossbar 4b occurs.
  • the primary carriage 5 continues its advance towards the outside of the vehicle by activating the first hydraulic cylinders 8a, 8b, dragging the entire mobile structure 4., so that once both elements 4 and 5 with each other, they will advance in solidarity up to a maximum longitudinal distance of three meters towards the outside of the vehicle 2 taking as reference the rear part of the corresponding fixed structure 3 with the rear part of the vehicle 2.
  • the mobile structure 4 is deployed, it is proceeded to position and stabilize it on the ground in a stable manner by using the third hydraulic cylinders 18 stabilizers.
  • the primary carriage 5 With the mobile structure 4 deployed and positioned on the ground, the primary carriage 5 is unlocked to perform the loading or unloading of goods. Once said operation is finished, the primary carriage 5 is anchored again to the cross member 4b; proceeding to fold the third vertical cylinders 18 and start folding the mobile structure 4 by moving it into the fixed structure 3 of the vehicle 2. Once the mobile structure 4 is fully folded, the third vertical cylinders are positioned 18 on the platform 2a of the vehicle 2, to give stability to the whole assembly.
  • Each second mechanical interlocking device 27 comprises an oscillating cam 27a with an angular configuration, a second compression spring 27b, a support 27c configured to accommodate the second spring 27b, and an axis 27d in which the oscillating cam 27a is coupled .
  • said angular configuration of the oscillating cam 27a comprises a vertical branch 32 and a horizontal branch 33.
  • the oscillating cam 27a is configured to rotate in a direction of rotation about the axis 27d against the resistance of the second spring 27b or to rotate in the other direction of rotation around the axis 27d by the action of the spring itself 27b.
  • Said axis 27d is integral to the support 27c, at the same time said support 27c is fixed to the respective first section 20 of the mobile structure 4.
  • the two second mechanical interlocking devices 27 are installed on the respective first sections 20 of the mobile upper structure 4, so that said second mechanical interlocking devices 27 are intended to join or separate the first two sections 20 and the second sections 21 of the parallel tubular beams 4a by means of a male element 28 integral with the second section 21; wherein said male element 28 fits into a female element 29 of the oscillating cam 27a in an anchoring position in which the first sections 20 and second sections 21 are joined together.
  • the first sections 20 of the parallel tubular beams 4a have the mission of allowing the transit of the primary carriage 5 throughout the crane bridge, regardless of whether it is more or less deployed.
  • the reason that each first section 20 can be released from the second section 21 is due to the fact that as the mobile structure 4 towards the outside of the vehicle 2, which functions as the transit surface of the primary carriage 5 inside said vehicle 2, the inner length of the parallel tubular beams 4a, which would expose the parallel longitudinal beams, is decreasing 19 on which the primary carriage 5 could not be moved.
  • the second interlocking device 27 located in section 20 is actuated by the movement of the primary carriage 5 in the following way.
  • the primary carriage 5 advances by sliding on the second sections 21 of the two parallel tubular beams 4a, until said primary carriage 5 is finally positioned on the first two sections 20 of the parallel tubular beams 4a.
  • a stop 30 of said primary carriage 5 impacts on one end of the oscillating cam 27a; causing an articulated movement of said oscillating cam 27a around the axis 27d, which allows the release between the male element 28 and the female element 29 against the resistance of the second spring 27b; where in an anchor position of each first section 20 and second section 21, the male element 28 is responsible for holding together the first section 20 and the second section 21.
  • the primary carriage 5 together with the first sections 20 begins its journey in a first direction towards the end of the loading area towards the interior space of the fixed structure 3 of the vehicle 2 moving together the first sections 20 and the primary car 5 to perform the cargo loading maneuver; and then the primary carriage 5 together with the first two sections 20 is directed in a second direction towards the outside of the fixed structure 3 of the vehicle 2, the first sections 20 and the second sections 21 being assembled and anchored again. each other as follows.
  • the oscillating cam 27a is subjected to a continuous pressure by the second spring 27b, while an end portion of said oscillating cam 27a includes an inclined plane 31 as a wedge ending in the female element 29, so that at said inclined plane 31 being with the male element 28 the oscillating cam 27a rotates against the resistance of the second spring 27b until finally the male element 28 fits inside the female element 29 of the oscillating cam 27a, whereby the first two sections 20 and the two second sections are anchored again.
  • the primary carriage 5 is moved towards the crossbar 4b of the mobile structure 4 to anchor said primary carriage to the mobile structure 4, and then lift and fold the third hydraulic cylinders 18.
  • the primary carriage 5 into the fixed structure 3 fixed to the vehicle 2 until the mobile structure 4 is fully inserted into the fixed structure 3; and finally, the third hydraulic cylinders 18 are placed on the platform 2a of the vehicle 2 to provide stability to the entire crane bridge assembly 1.
  • the third hydraulic cylinders 18 have the mission of supporting and stabilizing the assembly of the mobile structure 4, the primary goods carriage 5 and the load 13 during the handling of said load 13.
  • the bridge of the invention is capable of moving large loads, both in terms of weight and volume.
  • Said third hydraulic cylinders 18 are located in the line in correspondence with the parallel lateral planes where the vertical beams 3c of the fixed structure 3 of the cage are located, in order not to reduce the width of the access of the rear door of the vehicle 2 ; all this as shown in figures 6 and 7.
  • the third hydraulic cylinders 18 must support the parallel tubular beams 4a of the movable structure 4, it is necessary to make a small angle in their upper part that counteracts the difference between said parallel tubular beams 4a and the fixed structure 3. Another option would extend the crossbar 4b of the mobile structure 4 this difference.
  • the third hydraulic cylinders 18 are located in line with the parallel planes of the vertical beams 3c of the fixed structure, as referred to in the previous paragraph.
  • This clearance space 23 allows the extendable crane bridge 1 to be fully deployed on a loading dock for trucks and finally allows the positioning of the third hydraulic cylinders 18 by supporting their end bases 18a on a floor surface of the platform 2a.
  • the third hydraulic cylinders 18 are maintained with hydraulic pressure, so that the end bases 18a press on said platform 2a; thus ensuring the retention and stability of all moving elements in the folded position within the interior space of the fixed structure 3.
  • first parallel telescopic structures 24 are included that are fixed to the movable structure 4, such that ends of said telescopic structures 24 are attached to the end bases 18a of the third hydraulic cylinders 18.
  • the extendable crane bridge 1 can be installed in a large tonnage vehicle 2, which can be around a height of four meters, it may be insufficient that the third hydraulic cylinders 18 are simply fixed to the mobile structure 4.
  • they will include second telescopic structures (equivalent to the first telescopic structures 24) that would work exactly the same as the first telescopic structures 24, so that the weight of the mobile structure 4, the primary carriage 5 and the load 13 will be divided between the two beams tubular parallel 4a, the third hydraulic cylinders 18 and telescopic structures. This will significantly reduce material fatigue and provide greater stability to the entire crane bridge 1 assembly.
  • the mobility of the secondary carriage 6 is carried out by means of the two second hydraulic cylinders 11 which are fixed as opposed to an upper beam 25 integral with the first carriage 5; where the upper beam 25 is located in a transverse direction.
  • the hydraulic motor 12 is responsible for lifting and lowering the loads 13, so that the secondary car 6 that supports said hydraulic motor 12, performs a transverse movement (with respect to the vehicle loading area) on the carriage structure primary 5.
  • the two second hydraulic cylinders 11 act on an oscillating spring device, so that upon receiving pressure from one of the two second hydraulic cylinders 11, said oscillating spring device acts by releasing the other second hydraulic cylinder 11, and vice versa.
  • Each of these second hydraulic cylinders 11 performs 50% of the travel of the secondary carriage 6 that supports the hydraulic motor 12.
  • the extendable crane bridge performs all its movements by means of a hydraulic system comprising a pump, a hydraulic fluid storage tank, a cooling circuit, a main distributor, a radio control, a hydraulic circuit and safety valves.
  • the pump is coupled to a mechanical power take-off driven by the vehicle's engine 2. Its function is to transform the mechanical energy received from the power take-off into hydraulic energy, generating an overpressure in the circuit capable of causing the movement of all the active elements.
  • the accumulator tank contains a certain amount of hydraulic oil. This amount is variable depending on the movements performed by the extendable crane bridge 1 at any time.
  • the cooling circuit consists of incorporating a radiator whose function is to cool the hydraulic oil and thus safeguard all the elements through which the oil circulates. The radiator will remain at rest, activating through a thermostat upon reaching a previously determined temperature.
  • the hydraulic distributor is responsible for distributing the oil inlet from the accumulator tank to the different hydraulic elements included in the hydraulic distributor.
  • the hydraulic distributor is composed of four elements detailed below:
  • the first hydraulic cylinders 8a, 8b that carry out the translational movement of the primary carriage 5 and therefore, of the assembly of the mobile structure 4, and finally its folding.
  • the second hydraulic cylinders 11 which are responsible for the transverse movement of the secondary goods carriage 6.
  • the third hydraulic cylinders 18 configured to support and stabilize the mobile structure 4 during loading and unloading of merchandise.
  • the hydraulic motor 12 used to lower and lift the loads 13.
  • the radio command is a remote control that acts on the function distributor and can even be programmed to act on the vehicle's ignition system 2.
  • Radio-command is wireless. This feature allows the operator total autonomy when using it, thus being able to be located in the safest and most visible area.
  • the hydraulic circuit is composed of a series of pipes and hoses, of varying diameter according to the function they play. These pipes and hoses allow us to feed all the active elements of the hydraulic system.
  • the safety valves are associated with the different hydraulic cylinders and their function is to prevent the hydraulic oil from retracting, thus preventing the involuntary movements of said hydraulic cylinders.
  • steel material will be used, without discarding other materials, interposing between all the mobile elements plates of self-greased synthetic materials, type nylon, plastic, etc. It is emphasized that these materials reduce friction, noise, wear and can be replaced with a simple maintenance operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Jib Cranes (AREA)

Abstract

Le pont-grue extensible pour véhicule comprend une structure fixe (3), une structure mobile (4) accouplée à une partie supérieure de la structure fixe (3) au moyen d'un guidage télescopique (7); un chariot primaire (5) qui est configuré pour se déplacer dans une direction longitudinale; un chariot secondaire (6) accouplé au chariot primaire (5) au moyen d'un guidage transversal (10). Le pont-grue extensible comprend également un système de translation configuré pour mobiliser un ensemble sélectionné entre: un premier ensemble formé d'au moins le chariot primaire (5) et un second ensemble formé d'au moins le chariot primaire (5) et la structure mobile (4).
PCT/ES2019/070377 2018-06-05 2019-06-04 Pont-grue extensible pour véhicule WO2019234275A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201830542A ES2705090B2 (es) 2018-06-05 2018-06-05 Puente grua extensible para vehiculo
ESP201830542 2018-06-05

Publications (1)

Publication Number Publication Date
WO2019234275A1 true WO2019234275A1 (fr) 2019-12-12

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Application Number Title Priority Date Filing Date
PCT/ES2019/070377 WO2019234275A1 (fr) 2018-06-05 2019-06-04 Pont-grue extensible pour véhicule

Country Status (2)

Country Link
ES (1) ES2705090B2 (fr)
WO (1) WO2019234275A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7507712U (de) * 1975-03-12 1975-09-11 Stahl R Kraftfahrzeug mit einem Laufkran
FR2275333A1 (fr) * 1974-06-21 1976-01-16 Estassy Albert Dispositif de chargement d'un vehicule utilitaire
JPS6156380U (fr) * 1984-09-13 1986-04-15
FR2752233A1 (fr) * 1996-08-08 1998-02-13 Groupe Dld France Dispositif de manutention, a montage en kit, pour vehicules utilitaires et similaires
CN201283821Y (zh) * 2008-09-18 2009-08-05 文健 货物自动装卸机
CN105347062B (zh) * 2015-11-27 2017-07-14 韶关学院 可遥控式厢式车装卸系统

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2275333A1 (fr) * 1974-06-21 1976-01-16 Estassy Albert Dispositif de chargement d'un vehicule utilitaire
DE7507712U (de) * 1975-03-12 1975-09-11 Stahl R Kraftfahrzeug mit einem Laufkran
JPS6156380U (fr) * 1984-09-13 1986-04-15
FR2752233A1 (fr) * 1996-08-08 1998-02-13 Groupe Dld France Dispositif de manutention, a montage en kit, pour vehicules utilitaires et similaires
CN201283821Y (zh) * 2008-09-18 2009-08-05 文健 货物自动装卸机
CN105347062B (zh) * 2015-11-27 2017-07-14 韶关学院 可遥控式厢式车装卸系统

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ES2705090A1 (es) 2019-03-21
ES2705090B2 (es) 2019-12-19

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