WO2018167344A1 - Telescopic tower for lifting loads - Google Patents
Telescopic tower for lifting loads Download PDFInfo
- Publication number
- WO2018167344A1 WO2018167344A1 PCT/ES2018/070186 ES2018070186W WO2018167344A1 WO 2018167344 A1 WO2018167344 A1 WO 2018167344A1 ES 2018070186 W ES2018070186 W ES 2018070186W WO 2018167344 A1 WO2018167344 A1 WO 2018167344A1
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- tower
- profiles
- pairs
- pair
- sections
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F13/00—Common constructional features or accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/08—Masts; Guides; Chains
Definitions
- the present invention relates to a telescopic tower for lifting loads; highlighting that the telescopic tower comprises several profiles embedded and guided successively in each other.
- the tower of the invention is especially intended for lifting lighting and sound elements, without ruling out other applications.
- each pair of adjacent profiles of the tower are coupled to each other through connecting end sections in combination with anchoring mechanisms that allow varying the distances of said connecting end sections of the adjacent profiles to ensure bonding.
- the objective of the invention is to be able to vary the distance of said connecting end sections to optimize the stability of the tower in its maximum deployed extension, thus improving the verticality of the tower and therefore reducing its bending, which in practice it even translates into the possibility of supporting more load without risk to which the stability of the tower is compromised, while obtaining much better operating results than other conventional towers in which the connecting end sections have a fixed distance.
- telescopic towers are known to be able to lift loads.
- said telescopic towers comprise successive profiles embedded and guided successively in each other, so that when the tower is deployed in its position of maximum extension, some connecting sections of adjacent profiles are linked together; where the distance of said connecting end sections is fixed without the possibility of regulation.
- This fixed distance of the extreme connecting sections is a value that is usually defined empirically according to the type of profile used and its geometry, in addition to the weight or load performance that it expects to support with the tower, so that it cannot vary the fixed distance of the extreme sections of connection, sometimes problems of stability, buckling and flexion are generated, which causes a greater decentralization of the center of gravity of the high load with respect to the direction of the extended tower and therefore greater instability, greater buckling and greater bending of the tower.
- the invention proposes a telescopic tower for lifting loads comprising profiles embedded and guided successively with each other; where said profiles are configured so that in the deployed position of the tower at its maximum vertical extension, pairs of extreme connecting sections of the profiles ensure the linking of said profiles to each other.
- the pairs of extreme connecting sections of the profiles have different lengths; where a first lower pair of connecting end sections has a length greater than the length of at least a second intermediate pair of connecting end sections, and a third upper pair of connecting end sections has a length greater than the first and second pair of extreme connecting sections.
- the deployment of the telescopic tower at its maximum vertical extent is delimited by pairs of stops: upper and lower, which are located within longitudinal gaps delimited between facing parts of said profiles.
- Figure 1. Shows a perspective view of the telescopic tower for lifting loads with two enlarged details.
- Figure 2. Shows a profile view of the telescopic tower with an enlarged detail.
- Figure 3. Shows a plan view of the telescopic tower for lifting loads.
- the telescopic tower for lifting loads comprises profiles 1, 2, 3 embedded and guided successively in a staggered manner; where in a deployed position of the tower at its maximum vertical extent, the pairs of adjacent profiles 1, 2, 3 of the tower are coupled to each other through connecting end sections X, Y, Z in combination with pairs of first mechanisms of guide strip.
- the telescopic tower of the invention also includes pairs of stops: upper 4a and lower 4b, which allow to define the lengths or distances of said end sections X, Y, Z, through which the linking of said profiles is ensured. 1, 2, 3 adjacent in the extended position of the tower; where said connecting ends X, Y, Z form an integral part of the profiles 1, 2, 3.
- the distances or lengths of the extreme connecting sections X, Y, Z can be regulated independently to the extent required or desired according to the type of load, weight, volume, etc; or taking into account other parameters, such as the degree of flexion and buckling of the extended tower.
- the pairs of profiles 1, 2, 3 are related by the pairs of first guiding strip mechanisms that are located within longitudinal gaps 5 delimited between parts of said pairs of profiles 1, 2 and 3.
- the pairs of stops 4a, 4b are also located within the longitudinal gaps 5, so that considering each pair of stops, the upper stop 4a is located at an upper end of the respective profile and the lower stop 4b is located at a area away from the upper end of the respective profile.
- FIG. 2 an enlarged detail of a particular embodiment of the tower of the invention is shown in Figure 2, where a concrete wedge-shaped configuration of the upper stop 4a fixed to the upper profile 3 on which the lower stop contacts is shown 4b configured by a roller coupled to a shaft integral to the intermediate profile 2; where These two profiles 2, 3 are related by means of the pair of extreme connecting sections Z in the deployed position of maximum extension, so that the positioning of the upper stop 4a is the element that determines the length of the pair of extreme connecting sections Z.
- the lengths of the pairs of connecting end sections X and Y are determined by other upper stops 4a associated with other wheels that are coupled to each other and to the corresponding adjacent profiles of the telescopic tower.
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Civil Engineering (AREA)
- Supports For Plants (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Leg Units, Guards, And Driving Tracks Of Cranes (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention relates to a telescopic tower comprising profiles that successively fit into and guide one another. When the tower is in an extended position in maximum vertical extension, pairs of end sections for connecting the profiles ensure that said profiles connect together. The pairs of end connection sections have different lengths, a lower first pair of end connection sections (X) being longer than at least one intermediate second pair of end connection sections (Y), and an upper third pair of end connections sections (Z) being longer than the first and second pairs of end connection sections (X, Y). The maximum extension of the tower is delimited by pairs of stops, upper stops (4a) and lower stops (4b), which are located inside longitudinal holes (5) defined between opposite parts of said profiles.
Description
TORRE TELESCÓPICA PARA ELEVACIÓN DE CARGAS TELESCOPIC TOWER FOR LIFTING LOADS
DESCRIPCIÓN Objeto de la invención DESCRIPTION Object of the invention
La presente invención se refiere a una torre telescópica para elevación de cargas; destacándose que la torre telescópica comprende varios perfiles encajados y guiados sucesivamente unos en otros. La torre de la invención está especialmente destinada a la elevación de elementos de iluminación y sonido, sin descartar otras aplicaciones. Cuando la torre telescópica está desplegada en su máxima extensión, cada par de perfiles adyacentes de la torre están acoplados entre sí a través de tramos extremos de conexión en combinación con unos mecanismos de anclaje que permiten variar las distancias de dichos tramos extremos de conexión de los perfiles adyacentes para asegurar su vinculación. Por tanto el objetivo de la invención es poder variar la distancia de dichos tramos extremos de conexión para optimizar la estabilidad de la torre en su máxima extensión desplegada, logrando mejorar la verticalidad de la torre y por tanto reduciendo su flexión, lo que en la práctica se traduce incluso en la posibilidad de soportar más carga sin riesgo a que se comprometa la estabilidad de la torre, a la vez que se obtienen resultados de funcionamiento muy superiores que otras torres convencionales en las que los tramos extremos de conexión tienen una distancia fija. The present invention relates to a telescopic tower for lifting loads; highlighting that the telescopic tower comprises several profiles embedded and guided successively in each other. The tower of the invention is especially intended for lifting lighting and sound elements, without ruling out other applications. When the telescopic tower is deployed to its maximum extent, each pair of adjacent profiles of the tower are coupled to each other through connecting end sections in combination with anchoring mechanisms that allow varying the distances of said connecting end sections of the adjacent profiles to ensure bonding. Therefore, the objective of the invention is to be able to vary the distance of said connecting end sections to optimize the stability of the tower in its maximum deployed extension, thus improving the verticality of the tower and therefore reducing its bending, which in practice it even translates into the possibility of supporting more load without risk to which the stability of the tower is compromised, while obtaining much better operating results than other conventional towers in which the connecting end sections have a fixed distance.
Problema técnico a resolver y antecedentes de la invención Technical problem to solve and background of the invention
En la actualidad son conocidas las torres telescópicas para poder elevar cargas. Para ello dichas torres telescópicas comprenden sucesivos perfiles encajados y guiados sucesivamente unos en otros, de manera que cuando la torre está desplegada en su posición de máxima extensión, unos tramos extremos de conexión de perfiles adyacentes están vinculados entre sí; donde la distancia de dichos tramos extremos de conexión es fija sin posibilidad de regulación. Esta distancia fija de los tramos extremos de conexión es un valor que suele definirse empíricamente en función del tipo de perfil empleado y de su geometría, además de las prestaciones en peso o carga que prevé soportar con la torre, de forma que al no poder variar la distancia fija de los tramos extremos de conexión, a veces se generan problemas de estabilidad, pandeo y flexión, lo que provoca un mayor descentramiento del centro de
gravedad de la carga elevada con respecto a la dirección de la torre extendida y por consiguiente mayor inestabilidad, mayor pandeo y mayor flexión de la torre. At present, telescopic towers are known to be able to lift loads. For this, said telescopic towers comprise successive profiles embedded and guided successively in each other, so that when the tower is deployed in its position of maximum extension, some connecting sections of adjacent profiles are linked together; where the distance of said connecting end sections is fixed without the possibility of regulation. This fixed distance of the extreme connecting sections is a value that is usually defined empirically according to the type of profile used and its geometry, in addition to the weight or load performance that it expects to support with the tower, so that it cannot vary the fixed distance of the extreme sections of connection, sometimes problems of stability, buckling and flexion are generated, which causes a greater decentralization of the center of gravity of the high load with respect to the direction of the extended tower and therefore greater instability, greater buckling and greater bending of the tower.
Descripción de la invención Description of the invention
Con el fin de alcanzar los objetivos y evitar los inconvenientes mencionados en los apartados anteriores, la invención propone una torre telescópica para elevación de cargas comprende unos perfiles encajados y guiados sucesivamente entre sí; donde dichos perfiles están configurados para que en la posición desplegada de la torre en su máxima extensión vertical, pares de tramos extremos de conexión de los perfiles aseguren la vinculación entre sí de dichos perfiles. In order to achieve the objectives and avoid the drawbacks mentioned in the previous sections, the invention proposes a telescopic tower for lifting loads comprising profiles embedded and guided successively with each other; where said profiles are configured so that in the deployed position of the tower at its maximum vertical extension, pairs of extreme connecting sections of the profiles ensure the linking of said profiles to each other.
Los pares de tramos extremos de conexión de los perfiles tienen diferentes longitudes; donde un primer par inferior de tramos extremos de conexión tiene una longitud mayor que la longitud de al menos un segundo par intermedio de tramos extremos de conexión, y un tercer par superior de tramos extremos de conexión tiene una longitud mayor que el primero y segundo par de tramos extremos de conexión. The pairs of extreme connecting sections of the profiles have different lengths; where a first lower pair of connecting end sections has a length greater than the length of at least a second intermediate pair of connecting end sections, and a third upper pair of connecting end sections has a length greater than the first and second pair of extreme connecting sections.
El desplegado de la torre telescópica en su máxima extensión vertical está delimitada por pares de topes: superiores e inferiores, los cuales están ubicados dentro unos huecos longitudinales delimitados entre partes enfrentadas de dichos perfiles. The deployment of the telescopic tower at its maximum vertical extent is delimited by pairs of stops: upper and lower, which are located within longitudinal gaps delimited between facing parts of said profiles.
Por otro lado, algunas ventajas que se obtienen con la torre telescópica de la invención son las siguientes: - Menor fricción entre los distintos elementos móviles. On the other hand, some advantages obtained with the telescopic tower of the invention are the following: - Less friction between the different mobile elements.
- Control y mejora de la estabilidad de la torre telescópica, cuando está en la posición extendida, al poder ubicar la carga en una dirección más próxima a la vertical, optimizando así su centro de gravedad. - Control and improvement of the stability of the telescopic tower, when it is in the extended position, to be able to locate the load in a direction closer to the vertical, thus optimizing its center of gravity.
- Funcionamiento más suave al requerir menor par de tracción durante el ascenso de la carga, lo que reduce la flexión y pandeo de la torre de la invención. - Smoother operation by requiring less traction torque during the rise of the load, which reduces the bending and buckling of the tower of the invention.
A continuación para facilitar una mejor comprensión de esta memoria descriptiva y formando parte integrante de la misma, se acompaña una serie de figuras en las que con carácter ilustrativo y no limitativo se ha representado el objeto de la invención.
Breve descripción de las figuras Next, in order to facilitate a better understanding of this descriptive report and forming an integral part thereof, a series of figures are attached in which the object of the invention has been represented by way of illustration and not limitation. Brief description of the figures
Figura 1.- Muestra una vista en perspectiva de la torre telescópica para elevación de cargas con dos detalles ampliados. Figure 1.- Shows a perspective view of the telescopic tower for lifting loads with two enlarged details.
Figura 2.- Muestra una vista en perfil de la torre telescópica con un detalle ampliado. Figura 3.- Muestra una vista en planta de la torre telescópica para elevación de cargas. Figure 2.- Shows a profile view of the telescopic tower with an enlarged detail. Figure 3.- Shows a plan view of the telescopic tower for lifting loads.
Descripción de un ejemplo de realización de la invención Description of an embodiment of the invention
Considerando la numeración adoptada en las figuras, la torre telescópica para elevación de cargas comprende unos perfiles 1 , 2, 3 encajados y guiados sucesivamente entre sí de forma escalonada; donde en una posición desplegada de la torre en su máxima extensión vertical, los pares de perfiles 1 , 2, 3 adyacentes de la torre están acoplados entre sí a través de unos tramos extremos de conexión X, Y, Z en combinación con unos pares de primeros mecanismos de regleta de guiado. Considering the numbering adopted in the figures, the telescopic tower for lifting loads comprises profiles 1, 2, 3 embedded and guided successively in a staggered manner; where in a deployed position of the tower at its maximum vertical extent, the pairs of adjacent profiles 1, 2, 3 of the tower are coupled to each other through connecting end sections X, Y, Z in combination with pairs of first mechanisms of guide strip.
La torre telescópica de la invención incluye además unos pares de topes: superiores 4a e inferiores 4b, que permiten delimitar las longitudes o distancias de dichos tramos extremos de conexión X, Y, Z, a través de los que se asegura la vinculación de dichos perfiles 1 , 2, 3 adyacentes en la posición extendida de la torre; donde dichos tramos extremos de conexión X, Y, Z forman parte integrante de los propios perfiles 1 , 2, 3. The telescopic tower of the invention also includes pairs of stops: upper 4a and lower 4b, which allow to define the lengths or distances of said end sections X, Y, Z, through which the linking of said profiles is ensured. 1, 2, 3 adjacent in the extended position of the tower; where said connecting ends X, Y, Z form an integral part of the profiles 1, 2, 3.
Las distancias o las longitudes de los tramos extremos de conexión X, Y, Z se pueden regular de forma independiente a la medida que se precise o se desee según el tipo de carga, peso, volumen, etc; o teniendo en cuenta otros parámetros, como es el grado de flexión y pandeo de la torre extendida. The distances or lengths of the extreme connecting sections X, Y, Z can be regulated independently to the extent required or desired according to the type of load, weight, volume, etc; or taking into account other parameters, such as the degree of flexion and buckling of the extended tower.
Cabe señalar que el esfuerzo mecánico a lo largo de la estructura de la torre telescópica en posición extendida, se reduce progresivamente a medida que nos aproximamos al punto extremo de la torre donde se encuentra la carga; de forma que en esta situación se puede reducir progresivamente la distancia de los tramos extremos de conexión X, Y, Z desde el primer par de tramos extremos de conexión X ubicado en una parte inferior, hasta el último par de tramos extremos de conexión Z más próximo a la carga, pasando por otros pares de tramos extremos de conexión intermedios, que en la realización que se muestra en las figuras se muestra un solo par de tramos extremos de conexión Y
intermedio. It should be noted that the mechanical stress along the structure of the telescopic tower in an extended position is progressively reduced as we approach the extreme point of the tower where the load is located; so that in this situation the distance of the connecting end sections X, Y, Z can be progressively reduced from the first pair of connection end sections X located in a lower part, to the last pair of connection end sections Z plus close to the load, passing through other pairs of intermediate connecting end sections, which in the embodiment shown in the figures shows a single pair of connecting end sections Y intermediate.
Al hilo de lo dicho en el párrafo anterior, cuando la torre telescópica de la invención se coloca en su posición vertical más extendida se puede optimizar su resistencia y estabilidad regulando las distancias de los diferentes pares de tramos extremos de conexión X, Y, Z a la medida que se precise. In line with what was said in the previous paragraph, when the telescopic tower of the invention is placed in its most extended vertical position, its resistance and stability can be optimized by regulating the distances of the different pairs of connecting end sections X, Y, Z a the measure required.
Así pues, para conseguir la mayor resistencia y la mayor estabilidad posibles de la torre telescópica en posición extendida en consonancia con el peso de la carga a soportar en lo alto de torre de la invención, se calcula o se estima una distancia del primer par de tramos de conexión, y sucesivamente los siguientes pares de tramos extremos de conexión hasta el último par de tramos extremos de conexión Z más elevado y próximo a la carga soportada por la torre, de manera que las longitudes de los diferentes pares de tramos extremos de conexión irán progresivamente en disminución desde el primer par de tramos extremos de conexión X al último par de tramos extremos de conexión Z; donde el primer par de tramos extremos de conexión X es el par de tiramos que está sometido a mayores esfuerzos. Thus, in order to achieve the greatest possible resistance and stability of the telescopic tower in an extended position in line with the weight of the load to be supported at the top of the tower of the invention, a distance of the first pair of connection sections, and successively the following pairs of connection end sections up to the last pair of connection ends Z higher and closer to the load supported by the tower, so that the lengths of the different pairs of connection end sections they will progressively decrease from the first pair of end sections of connection X to the last pair of end sections of connection Z; where the first pair of extreme connecting sections X is the pair of threads that are subjected to greater efforts.
La longitud deseada de cada par de tramos extremos de conexión se consigue mediante pares de topes internos The desired length of each pair of connecting end sections is achieved by pairs of internal stops
Los pares de perfiles 1 , 2, 3 se relacionan mediante los pares de primeros mecanismos de regleta de guiado que se ubican dentro de unos huecos longitudinales 5 delimitados entre partes de dichos pares de perfiles 1 , 2 y 3. The pairs of profiles 1, 2, 3 are related by the pairs of first guiding strip mechanisms that are located within longitudinal gaps 5 delimited between parts of said pairs of profiles 1, 2 and 3.
Los pares de topes 4a, 4b están ubicados también dentro de los huecos longitudinales 5, de forma que considerando cada par de topes, el tope superior 4a se encuentra ubicado en un extremo superior del respectivo perfil y el tope inferior 4b se encuentra ubicado en una zona alejada del extremo superior del respectivo perfil. The pairs of stops 4a, 4b are also located within the longitudinal gaps 5, so that considering each pair of stops, the upper stop 4a is located at an upper end of the respective profile and the lower stop 4b is located at a area away from the upper end of the respective profile.
Por otro lado, en la figura 2 se muestra un detalle ampliado de una realización particular de la torre de la invención, donde se destaca una configuración concreta en forma de cuña del tope superior 4a fijado al perfil 3 superior sobre el que contacta el tope inferior 4b configurado por una rulina acoplada a un eje solidario al perfil 2 intermedio; donde
estos dos perfiles 2, 3 están relacionados mediante el par de tramos extremos de conexión Z en la posición desplegada de máxima extensión, de manera el posicionamiento del tope superior 4a es el elemento que determina la longitud del par de tramos extremos de conexión Z. On the other hand, an enlarged detail of a particular embodiment of the tower of the invention is shown in Figure 2, where a concrete wedge-shaped configuration of the upper stop 4a fixed to the upper profile 3 on which the lower stop contacts is shown 4b configured by a roller coupled to a shaft integral to the intermediate profile 2; where These two profiles 2, 3 are related by means of the pair of extreme connecting sections Z in the deployed position of maximum extension, so that the positioning of the upper stop 4a is the element that determines the length of the pair of extreme connecting sections Z.
Igualmente, las longitudes de los pares de tramos extremos de conexión X e Y están determinados por otros topes superiores 4a asociados a otras rulinas que están acopladas unos y otros elementos a los correspondientes perfiles adyacentes de la torre telescópica.
Likewise, the lengths of the pairs of connecting end sections X and Y are determined by other upper stops 4a associated with other wheels that are coupled to each other and to the corresponding adjacent profiles of the telescopic tower.
Claims
1.- Torre telescópica para elevación de cargas, que comprende unos perfiles encajados y guiados sucesivamente entre sí; donde dichos perfiles están configurados para que en la posición desplegada de la torre en su máxima extensión vertical, pares de tramos extremos de conexión de los perfiles aseguren la vinculación entre sí de dichos perfiles; caracterizada por que los pares de tramos extremos de conexión tienen diferentes longitudes; donde un primer par inferior de tramos extremos de conexión (X) tiene una longitud mayor que la longitud de al menos un segundo par intermedio de tramos extremos de conexión (Y), y un tercer par superior de tramos extremos de conexión (Z) tiene una longitud mayor que el primero y segundo par de tramos extremos de conexión (X, Y); y donde el desplegado de la torre telescópica en su máxima extensión vertical está delimitada por pares de topes: superiores (4a) e inferiores (4b), los cuales están ubicados dentro unos huecos longitudinales (5) delimitados entre partes enfrentadas de dichos perfiles.
1.- Telescopic tower for lifting loads, comprising profiles embedded and guided successively with each other; where said profiles are configured so that in the deployed position of the tower at its maximum vertical extent, pairs of extreme connecting sections of the profiles ensure the linking of said profiles to each other; characterized in that the pairs of connecting end sections have different lengths; where a first lower pair of connecting end sections (X) is longer than the length of at least a second intermediate pair of connecting end sections (Y), and a third upper pair of connecting end sections (Z) has a length greater than the first and second pair of connecting end sections (X, Y); and where the deployment of the telescopic tower at its maximum vertical extent is delimited by pairs of stops: upper (4a) and lower (4b), which are located within longitudinal gaps (5) delimited between facing parts of said profiles.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ESU201730263 | 2017-03-15 | ||
| ES201730263U ES1181908Y (en) | 2017-03-15 | 2017-03-15 | TELESCOPIC TOWER FOR LIFTING LOADS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2018167344A1 true WO2018167344A1 (en) | 2018-09-20 |
Family
ID=58633140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/ES2018/070186 WO2018167344A1 (en) | 2017-03-15 | 2018-03-13 | Telescopic tower for lifting loads |
Country Status (2)
| Country | Link |
|---|---|
| ES (1) | ES1181908Y (en) |
| WO (1) | WO2018167344A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114275716A (en) * | 2020-06-10 | 2022-04-05 | 广东博智林机器人有限公司 | Lifting device and plastering equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3485323A (en) * | 1967-09-06 | 1969-12-23 | Eaton Yale & Towne | Lift truck mast and ram assembly |
| US3638761A (en) * | 1969-02-25 | 1972-02-01 | Toyoda Automatic Loom Works | Three-stage mast assembly for a lift truck |
| US4015686A (en) * | 1973-01-29 | 1977-04-05 | Bushnell Jr Sherman W | Portable multi-stage mechanical list |
| JPH0346999A (en) * | 1989-07-13 | 1991-02-28 | Toyota Autom Loom Works Ltd | Cargo handling gear for forklift |
| EP0678474A2 (en) * | 1994-04-18 | 1995-10-25 | Genie Industries, Inc. | Multi-stage mast assembly for portable lifts |
| US6095286A (en) * | 1997-01-23 | 2000-08-01 | Genie Industries, Inc. | Personnel lift with adjustable shim wear blocks |
-
2017
- 2017-03-15 ES ES201730263U patent/ES1181908Y/en not_active Expired - Fee Related
-
2018
- 2018-03-13 WO PCT/ES2018/070186 patent/WO2018167344A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3485323A (en) * | 1967-09-06 | 1969-12-23 | Eaton Yale & Towne | Lift truck mast and ram assembly |
| US3638761A (en) * | 1969-02-25 | 1972-02-01 | Toyoda Automatic Loom Works | Three-stage mast assembly for a lift truck |
| US4015686A (en) * | 1973-01-29 | 1977-04-05 | Bushnell Jr Sherman W | Portable multi-stage mechanical list |
| JPH0346999A (en) * | 1989-07-13 | 1991-02-28 | Toyota Autom Loom Works Ltd | Cargo handling gear for forklift |
| EP0678474A2 (en) * | 1994-04-18 | 1995-10-25 | Genie Industries, Inc. | Multi-stage mast assembly for portable lifts |
| US6095286A (en) * | 1997-01-23 | 2000-08-01 | Genie Industries, Inc. | Personnel lift with adjustable shim wear blocks |
Non-Patent Citations (1)
| Title |
|---|
| DATABASE EPODOC Database accession no. EP - 95105669 - A * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114275716A (en) * | 2020-06-10 | 2022-04-05 | 广东博智林机器人有限公司 | Lifting device and plastering equipment |
| CN114275716B (en) * | 2020-06-10 | 2023-04-25 | 广东博智林机器人有限公司 | Lifting device and plastering equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| ES1181908Y (en) | 2017-07-25 |
| ES1181908U (en) | 2017-05-03 |
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