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WO2023072320A1 - Device for simulation of a moving vehicle - Google Patents

Device for simulation of a moving vehicle Download PDF

Info

Publication number
WO2023072320A1
WO2023072320A1 PCT/CZ2022/050020 CZ2022050020W WO2023072320A1 WO 2023072320 A1 WO2023072320 A1 WO 2023072320A1 CZ 2022050020 W CZ2022050020 W CZ 2022050020W WO 2023072320 A1 WO2023072320 A1 WO 2023072320A1
Authority
WO
WIPO (PCT)
Prior art keywords
horizontal
linear reciprocating
reciprocating actuator
base
carrier
Prior art date
Application number
PCT/CZ2022/050020
Other languages
French (fr)
Inventor
Vitezslav Fliegel
Petr Lepsik
Rudolf Martonka
Original Assignee
Technicka Univerzita V Liberci
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 Technicka Univerzita V Liberci filed Critical Technicka Univerzita V Liberci
Publication of WO2023072320A1 publication Critical patent/WO2023072320A1/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G01M99/001—Testing of furniture, e.g. seats or mattresses
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G01M17/06—Steering behaviour; Rolling behaviour
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00—Vibration-testing of structures; Shock-testing of structures
    • G01M7/02—Vibration-testing by means of a shake table
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
    • G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
    • G09B23/10—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of solid bodies

Definitions

  • the invention relates to a device for simulation of a moving vehicle which comprises a support on which a vertical positioning node is mounted, and on the vertical positioning node, a horizontal positioning node is mounted.
  • Vehicle components are routinely tested for strength, wear and durability. Devices that simulate the movement of a moving vehicle are used to test vehicle seats, e.g., to test their strength, flexibility, wear, etc.
  • the Stewart platform comprises a base with a circular base plate and a spatially adjustable carrier arranged above it, usually made as a circular plate, whereby between the base plate and the carrier, there are usually six vertically inclined linear actuators arranged evenly around the circumference of the circular base plate, which are coupled to both the base plate and the carrier by articulated joints.
  • the basic excitation element for the movement of the carrier is each individual linear actuator. To achieve the desired position of the upper surface of the carrier in space, it is possible to move the carrier first in the X-axis, then in the Y-axis and finally in the Z-axis.
  • the same desired position is achieved by composing movements based on mathematical methods of convergence to a specified point, by composing movements from small steps of the individual linear actuators according to a specified trajectory.
  • a specified trajectory Depending on the size and number of steps of the individual linear actuators, an almost smooth movement can be achieved along the specified trajectory to the specified position.
  • neither of these methods corresponds to the actual movement of a component mounted in a moving vehicle, such as a seat mounted in the car body.
  • the car seat moves at the same time in the X-axis, Y-axis and Z-axis as the car is moving and each movement is implemented independently and simultaneously. Such a movement cannot be faithfully simulated by the Stewart platform or any other hexapod-based test device.
  • CN109323836 discloses a test bench for simulating car seat vibrations, consisting of a platform, a first base, a second base, a vertical vibration generator and a horizontal vibration generator.
  • the vertical vibration generator is mounted on the platform on which the first base is mounted.
  • the horizontal vibration generator is mounted on the first base.
  • the second base provided with a pair of vehicle seats is mounted.
  • the device simulates vibrations in a two-dimensional direction, with seat vibrations sensed by vibration sensors and the image of the vibrating seats captured by an industrial camera.
  • the disadvantage of such a device is that it does not make it possible to faithfully simulate the actual movement of the seat of a moving vehicle in three mutually perpendicular axes. Moreover, the device does not allow testing the load applied to the seat.
  • the objective of the invention is therefore to eliminate or at least minimize the disadvantages of the background art and to improve the simulation of a moving vehicle, especially in devices for testing vehicle components, but also in other devices that use the simulation of a moving vehicle.
  • a device for simulation of a moving vehicle which comprises a support on which a vertical positioning node is mounted and on the vertical positioning node, a horizontal positioning node is mounted, whereby the vertical positioning node comprises a vertical linear reciprocating actuator and the horizontal positioning node comprises a first horizontal linear reciprocating actuator and a second horizontal linear reciprocating actuator.
  • the horizontal linear reciprocating actuators are arranged above each other in mutually parallel planes, whereby the first horizontal direction of the linear movement of the first horizontal linear reciprocating actuator is oriented transversely to the second horizontal direction of the linear movement of the second horizontal linear reciprocating actuator.
  • Such a device for simulation of a moving vehicle allows to move continuously reciprocatingly the tested object arranged on the second horizontal linear reciprocating actuator in three perpendicular or substantially perpendicular directions, thus faithfully simulating the movement of the tested object in a real moving vehicle.
  • the vertical reciprocating actuator is movably coupled to a first base arranged above it.
  • Mounted on the first base is the first horizontal linear reciprocating actuator which is movably coupled to a second base arranged above it.
  • the second horizontal linear reciprocating actuator is mounted on the second base.
  • the second horizontal linear reciprocating actuator is movably coupled to a carrier of the tested object which is arranged above it and is adapted to accommodate the tested object.
  • the embodiment of the device with bases and a carrier of the tested object to which linear reciprocating actuators are attached ideally detachably, facilitates assembly/disassembly of the device, interchangeability of the device actuators and placing/removal of the tested object in/from the device.
  • the device comprises several identical or almost identical interchangeable modules.
  • a device which comprises a base carrier which is arranged between the first horizontal linear reciprocating actuator and the second base, and which is adapted to receive the second base.
  • a device which comprises two interchangeable horizontal modules arranged transversely one above the other in parallel, each of which comprises a base, a horizontal linear reciprocating actuator and a carrier.
  • the above-described device with bases is preferably realized in such a manner that the at least one base is provided with a horizontal linear guide oriented parallel to the horizontal direction of the linear movement of the horizontal linear reciprocating actuator mounted on the same base.
  • This allows a less robust cheaper horizontal linear reciprocating actuator to be implemented in the device and/or a wider carrier of the tested object can be used to accommodate a larger tested object without reducing the strength, rigidity, and stability of the device.
  • the carrier of the tested object is adapted in size and shape to accommodate a vehicle seat, e.g., a car seat, a child car seat, a bus seat, a train seat, a truck seat, etc.
  • a vehicle seat e.g., a car seat, a child car seat, a bus seat, a train seat, a truck seat, etc.
  • the support of the moving vehicle simulation device is arranged in a frame in which a vertical guide for horizontal fixation of the seat load is arranged above the carrier of the tested object, so that when testing, the seat placed on the carrier of the tested object is moved in three different directions, while the load placed in the seat is fixed in the horizontal directions of movement of the seat and moves together with the seat only in the vertical direction of its movement, thereby faithfully simulating the loading of the seat of a moving vehicle by the body of the seated person.
  • Fig. 1 schematically represents a device according to the invention for simulation of a moving vehicle
  • Fig. 2 schematically represents the device for simulation of a moving vehicle in an embodiment with two bases and one carrier
  • Fig. 3 schematically shows a movement mechanism of the device for simulation of a moving vehicle.
  • a device for simulation of a moving vehicle comprises a support 1 and a movement mechanism 2, which comprises a vertical positioning node 20 and a horizontal positioning node 21.
  • the vertical positioning node 20 comprises a vertical linear reciprocating actuator 200.
  • the horizontal positioning node 21 comprises a first horizontal linear reciprocating actuator 210a and a second horizontal linear reciprocating actuator 210b, whereby the horizontal linear reciprocating actuators 210a, 210b are arranged above each other in mutually parallel planes and the first horizontal direction X of the linear movement of the first horizontal linear reciprocating actuator 210a is oriented transversely to the second horizontal direction Z of the linear movement of the second horizontal linear reciprocating actuator 210b.
  • the horizontal positioning node 21 further optionally includes a spatially adjustable carrier 211 a of the tested object that is adapted in size and shape to accommodate the tested object 3, e.g., a vehicle seat, a child car seat, a car simulator seat, a roof box, etc., and two bases 212a, 212b.
  • Each base 212a, 212b is adapted to accommodate a horizontal linear reciprocating actuator 210a, 210b.
  • the vertical linear reciprocating actuator 200 is movably coupled to a first base 212a arranged above it, for example, by connecting its unillustrated movable actuator to the underside of the first base 212a by means of a connecting element 5 (Fig. 2).
  • the first horizontal linear reciprocating actuator 210a is mounted on the first base 212a, e.g., it is attached to the upper side of the first base 212a by unillustrated screws.
  • the first horizontal linear reciprocating actuator 210a is movably coupled to a second base 212b arranged above it, for example, by screwing or welding its unillustrated actuator to the underside of the second base 212a.
  • the second horizontal linear reciprocating actuator 210b is mounted on the second base 212a.
  • the second horizontal linear reciprocating actuator 210b is movably coupled to the carrier 211 a of the tested object 3 arranged above it, for example, by bolting or welding the unillustrated movable actuator to the underside of the carrier 211 a of the tested object 3.
  • the carrier 211 a of the tested object 3 is adapted to accommodate the tested object 3, e.g., it is provided with holes, projections, clips, screws, etc. for fastening the tested object 3.
  • the vertical linear reciprocating actuator 200, the first horizontal linear reciprocating actuator 210a and the second horizontal linear reciprocating actuator 210b are perpendicular to each other or substantially perpendicular, so that directions X, Y, Z of their linear movement correspond to the three mutually perpendicular axes x, y, z in the Cartesian coordinate system in space, whereby the carrier 21 1 a of the tested object arranged above these actuators 200, 210a, 210b is spatially adjustable in these three directions X, Y, Z.
  • the first horizontal linear reciprocating actuator 210a is adapted for linear reciprocating movement of its unillustrated actuator in the first horizontal direction X
  • the second horizontal linear reciprocating actuator 210b is adapted for linear reciprocating movement of its unillustrated actuator in the second horizontal direction Z, which is perpendicular or substantially perpendicular to the first horizontal direction X
  • the vertical linear reciprocating actuator 200 is adapted for linear reciprocating movement of its unillustrated actuator in the vertical direction Y, which is perpendicular or substantially perpendicular to the plane formed by the first horizontal direction X and the second horizontal direction Z.
  • Fig. 3 shows an exemplary embodiment of a movement mechanism 2 whose horizontal positioning node 21 comprises a carrier 211 b of the second base 212b, which is arranged between the first horizontal linear reciprocating actuator 210a and the second base 212b and which is adapted to accommodate the second base 212b, to which it is detachably connected by the connecting elements 5, e.g., by a pair of horizontally oriented connecting rods provided with longitudinal grooves (Fig. 3) for anchoring unillustrated connecting projections, by vertically oriented connecting rods, connecting flanges, screws, clips, etc.
  • the connecting elements 5 e.g., by a pair of horizontally oriented connecting rods provided with longitudinal grooves (Fig. 3) for anchoring unillustrated connecting projections, by vertically oriented connecting rods, connecting flanges, screws, clips, etc.
  • the horizontal positioning node 21 comprises two identical or substantially identical interchangeable horizontal modules 6a, 6b, whereby the first horizontal module 6a comprises the first base 212a, the first horizontal linear reciprocating actuator 210a, and the carrier 211 b of the second base 212b and the second horizontal module 6b comprises the second base 212b, the second horizontal linear reciprocating actuator 210b, and the carrier 211 a of the tested object.
  • each horizontal module 6a, 6b comprise, for example, (Figs. 2, 3) a horizontally oriented plate, whereby the horizontal plate of the base 212a, 212b is coupled to the horizontal plate of the carrier 211 a, 211 b by means of the horizontal linear reciprocating actuator 210a, 210b.
  • the horizontal plate of the carrier 211 a, 211 b with its opposite edges is movably reciprocally mounted in horizontal linear guides 61_, e.g., linear bearings, slides, etc., and with its underside it is movably coupled to the horizontal linear reciprocating actuator 210a, 210b arranged below it.
  • the horizontal linear reciprocating actuator 210a, 210b is mounted on the upper side of the plate of the base 212a, 212b.
  • the horizontal linear guides 61 are mounted on the opposite edges of the plate of the base 212a, 212b.
  • the horizontal linear reciprocating actuator 210a, 210b and the horizontal linear guide 61 are oriented parallel, and so the direction of the linear reciprocating movement of an unillustrated actuator member of the horizontal linear reciprocating actuator 210a, 210b and the direction of the linear reciprocating movement of the horizontal linear guide 61 are parallel.
  • the support 1 on which the vertical linear reciprocating actuator 200 is mounted is optionally integrated in a frame 4 (Fig. 2), in the upper part of which a vertical linear guide 7 of an unillustrated load of the tested object 3, e.g., a load for simulating the load of a tested seat by a seated person is mounted.
  • a vertical linear guide 7 of an unillustrated load of the tested object 3 e.g., a load for simulating the load of a tested seat by a seated person is mounted.
  • the load is fixed in the horizontal directions X, Z and moves only in the vertical direction Y, while the tested object 3 moves in all three directions X, Y, Z.
  • the above-described device according to the invention for simulation of a moving vehicle operates in such a manner that, during operation of the device, the vertical linear reciprocating actuator 200, which is mounted on the support 1, moves the first base 212a, which is arranged above it, in the vertical direction Y, whereby the first horizontal linear reciprocating actuator 210a, which is mounted on the first base 212a, moves the second base 212b, which is arranged above it, in the first horizontal direction X, whereby the second horizontal linear reciprocating actuator 210b, which is mounted on the second base 212b, moves the carrier 211 a of the tested object which is arranged above it, in the second horizontal direction Z.
  • This device can be used, e.g., for long-term wear testing of the seat cushion of a loaded vehicle seat, for fatigue tests of the attachment of the vehicle seat, wheel carrier, registration plate, etc. to the vehicle body or frame, etc.

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  • General Physics & Mathematics (AREA)
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Abstract

The invention relates to a device for simulation of a moving vehicle, which comprises a base (1) on which a vertical positioning node is mounted, and on the vertical positioning node a horizontal positioning node is mounted. The vertical positioning node comprises a vertical linear reciprocating actuator (200) and the horizontal positioning node comprises a first horizontal linear reciprocating actuator (210a) and a second horizontal linear reciprocating actuator (210b). The horizontal linear reciprocating actuators (210a, 210b) are arranged above each other in mutually parallel planes, whereby the first horizontal linear reciprocating actuator (210a) is adapted to move in the first horizontal direction (X), the second horizontal linear reciprocating actuator (210b) is adapted to move in the second horizontal direction (Z), whereby the first horizontal direction (X) and the second horizontal direction (Z) are oriented transversely to each other.

Description

Device for simulation of a moving vehicle
Technical field
The invention relates to a device for simulation of a moving vehicle which comprises a support on which a vertical positioning node is mounted, and on the vertical positioning node, a horizontal positioning node is mounted.
Background art
Vehicle components are routinely tested for strength, wear and durability. Devices that simulate the movement of a moving vehicle are used to test vehicle seats, e.g., to test their strength, flexibility, wear, etc.
Known test devices for simulating vehicle movement usually use the so- called "Stewart platform". The Stewart platform comprises a base with a circular base plate and a spatially adjustable carrier arranged above it, usually made as a circular plate, whereby between the base plate and the carrier, there are usually six vertically inclined linear actuators arranged evenly around the circumference of the circular base plate, which are coupled to both the base plate and the carrier by articulated joints. The basic excitation element for the movement of the carrier is each individual linear actuator. To achieve the desired position of the upper surface of the carrier in space, it is possible to move the carrier first in the X-axis, then in the Y-axis and finally in the Z-axis. Alternatively, the same desired position is achieved by composing movements based on mathematical methods of convergence to a specified point, by composing movements from small steps of the individual linear actuators according to a specified trajectory. Depending on the size and number of steps of the individual linear actuators, an almost smooth movement can be achieved along the specified trajectory to the specified position. However, neither of these methods corresponds to the actual movement of a component mounted in a moving vehicle, such as a seat mounted in the car body. The car seat moves at the same time in the X-axis, Y-axis and Z-axis as the car is moving and each movement is implemented independently and simultaneously. Such a movement cannot be faithfully simulated by the Stewart platform or any other hexapod-based test device.
CN109323836 discloses a test bench for simulating car seat vibrations, consisting of a platform, a first base, a second base, a vertical vibration generator and a horizontal vibration generator. The vertical vibration generator is mounted on the platform on which the first base is mounted. The horizontal vibration generator is mounted on the first base. On the horizontal vibration generator, the second base provided with a pair of vehicle seats is mounted. The device simulates vibrations in a two-dimensional direction, with seat vibrations sensed by vibration sensors and the image of the vibrating seats captured by an industrial camera. The disadvantage of such a device is that it does not make it possible to faithfully simulate the actual movement of the seat of a moving vehicle in three mutually perpendicular axes. Moreover, the device does not allow testing the load applied to the seat.
The objective of the invention is therefore to eliminate or at least minimize the disadvantages of the background art and to improve the simulation of a moving vehicle, especially in devices for testing vehicle components, but also in other devices that use the simulation of a moving vehicle.
Principle of the invention
The above-mentioned drawbacks have been solved by the invention and a device for simulation of a moving vehicle, which comprises a support on which a vertical positioning node is mounted and on the vertical positioning node, a horizontal positioning node is mounted, whereby the vertical positioning node comprises a vertical linear reciprocating actuator and the horizontal positioning node comprises a first horizontal linear reciprocating actuator and a second horizontal linear reciprocating actuator. The horizontal linear reciprocating actuators are arranged above each other in mutually parallel planes, whereby the first horizontal direction of the linear movement of the first horizontal linear reciprocating actuator is oriented transversely to the second horizontal direction of the linear movement of the second horizontal linear reciprocating actuator. Such a device for simulation of a moving vehicle allows to move continuously reciprocatingly the tested object arranged on the second horizontal linear reciprocating actuator in three perpendicular or substantially perpendicular directions, thus faithfully simulating the movement of the tested object in a real moving vehicle.
Preferably, the vertical reciprocating actuator is movably coupled to a first base arranged above it. Mounted on the first base is the first horizontal linear reciprocating actuator which is movably coupled to a second base arranged above it. The second horizontal linear reciprocating actuator is mounted on the second base. The second horizontal linear reciprocating actuator is movably coupled to a carrier of the tested object which is arranged above it and is adapted to accommodate the tested object. The embodiment of the device with bases and a carrier of the tested object to which linear reciprocating actuators are attached, ideally detachably, facilitates assembly/disassembly of the device, interchangeability of the device actuators and placing/removal of the tested object in/from the device.
It is advantageous for the production and service of the device if the device comprises several identical or almost identical interchangeable modules. This is achieved by a device which comprises a base carrier which is arranged between the first horizontal linear reciprocating actuator and the second base, and which is adapted to receive the second base. Thus, a device is provided which comprises two interchangeable horizontal modules arranged transversely one above the other in parallel, each of which comprises a base, a horizontal linear reciprocating actuator and a carrier.
The above-described device with bases is preferably realized in such a manner that the at least one base is provided with a horizontal linear guide oriented parallel to the horizontal direction of the linear movement of the horizontal linear reciprocating actuator mounted on the same base. This allows a less robust cheaper horizontal linear reciprocating actuator to be implemented in the device and/or a wider carrier of the tested object can be used to accommodate a larger tested object without reducing the strength, rigidity, and stability of the device.
The carrier of the tested object is adapted in size and shape to accommodate a vehicle seat, e.g., a car seat, a child car seat, a bus seat, a train seat, a truck seat, etc. For vehicle seat testing, it is advantageous if the support of the moving vehicle simulation device is arranged in a frame in which a vertical guide for horizontal fixation of the seat load is arranged above the carrier of the tested object, so that when testing, the seat placed on the carrier of the tested object is moved in three different directions, while the load placed in the seat is fixed in the horizontal directions of movement of the seat and moves together with the seat only in the vertical direction of its movement, thereby faithfully simulating the loading of the seat of a moving vehicle by the body of the seated person.
Description of the drawings
In the enclosed drawings, Fig. 1 schematically represents a device according to the invention for simulation of a moving vehicle, Fig. 2 schematically represents the device for simulation of a moving vehicle in an embodiment with two bases and one carrier, Fig. 3 schematically shows a movement mechanism of the device for simulation of a moving vehicle.
Examples of embodiment
A device for simulation of a moving vehicle (Fig. 1 ) according to the invention comprises a support 1 and a movement mechanism 2, which comprises a vertical positioning node 20 and a horizontal positioning node 21.. The vertical positioning node 20 comprises a vertical linear reciprocating actuator 200. The horizontal positioning node 21 comprises a first horizontal linear reciprocating actuator 210a and a second horizontal linear reciprocating actuator 210b, whereby the horizontal linear reciprocating actuators 210a, 210b are arranged above each other in mutually parallel planes and the first horizontal direction X of the linear movement of the first horizontal linear reciprocating actuator 210a is oriented transversely to the second horizontal direction Z of the linear movement of the second horizontal linear reciprocating actuator 210b.
In the exemplary embodiment shown in Figs. 2 and 3, the horizontal positioning node 21 further optionally includes a spatially adjustable carrier 211 a of the tested object that is adapted in size and shape to accommodate the tested object 3, e.g., a vehicle seat, a child car seat, a car simulator seat, a roof box, etc., and two bases 212a, 212b. Each base 212a, 212b is adapted to accommodate a horizontal linear reciprocating actuator 210a, 210b. The vertical linear reciprocating actuator 200 is movably coupled to a first base 212a arranged above it, for example, by connecting its unillustrated movable actuator to the underside of the first base 212a by means of a connecting element 5 (Fig. 2). The first horizontal linear reciprocating actuator 210a is mounted on the first base 212a, e.g., it is attached to the upper side of the first base 212a by unillustrated screws. The first horizontal linear reciprocating actuator 210a is movably coupled to a second base 212b arranged above it, for example, by screwing or welding its unillustrated actuator to the underside of the second base 212a. The second horizontal linear reciprocating actuator 210b is mounted on the second base 212a. The second horizontal linear reciprocating actuator 210b is movably coupled to the carrier 211 a of the tested object 3 arranged above it, for example, by bolting or welding the unillustrated movable actuator to the underside of the carrier 211 a of the tested object 3. The carrier 211 a of the tested object 3 is adapted to accommodate the tested object 3, e.g., it is provided with holes, projections, clips, screws, etc. for fastening the tested object 3.
The vertical linear reciprocating actuator 200, the first horizontal linear reciprocating actuator 210a and the second horizontal linear reciprocating actuator 210b are perpendicular to each other or substantially perpendicular, so that directions X, Y, Z of their linear movement correspond to the three mutually perpendicular axes x, y, z in the Cartesian coordinate system in space, whereby the carrier 21 1 a of the tested object arranged above these actuators 200, 210a, 210b is spatially adjustable in these three directions X, Y, Z.
For example, the first horizontal linear reciprocating actuator 210a is adapted for linear reciprocating movement of its unillustrated actuator in the first horizontal direction X, the second horizontal linear reciprocating actuator 210b is adapted for linear reciprocating movement of its unillustrated actuator in the second horizontal direction Z, which is perpendicular or substantially perpendicular to the first horizontal direction X, whereby the vertical linear reciprocating actuator 200 is adapted for linear reciprocating movement of its unillustrated actuator in the vertical direction Y, which is perpendicular or substantially perpendicular to the plane formed by the first horizontal direction X and the second horizontal direction Z.
Fig. 3 shows an exemplary embodiment of a movement mechanism 2 whose horizontal positioning node 21 comprises a carrier 211 b of the second base 212b, which is arranged between the first horizontal linear reciprocating actuator 210a and the second base 212b and which is adapted to accommodate the second base 212b, to which it is detachably connected by the connecting elements 5, e.g., by a pair of horizontally oriented connecting rods provided with longitudinal grooves (Fig. 3) for anchoring unillustrated connecting projections, by vertically oriented connecting rods, connecting flanges, screws, clips, etc. The advantage of this embodiment is that the horizontal positioning node 21 comprises two identical or substantially identical interchangeable horizontal modules 6a, 6b, whereby the first horizontal module 6a comprises the first base 212a, the first horizontal linear reciprocating actuator 210a, and the carrier 211 b of the second base 212b and the second horizontal module 6b comprises the second base 212b, the second horizontal linear reciprocating actuator 210b, and the carrier 211 a of the tested object.
The base 212a, 212b, as well as the carrier 211 a, 211 b of each horizontal module 6a, 6b comprise, for example, (Figs. 2, 3) a horizontally oriented plate, whereby the horizontal plate of the base 212a, 212b is coupled to the horizontal plate of the carrier 211 a, 211 b by means of the horizontal linear reciprocating actuator 210a, 210b.
In the exemplary embodiment shown in Fig. 3, the horizontal plate of the carrier 211 a, 211 b with its opposite edges is movably reciprocally mounted in horizontal linear guides 61_, e.g., linear bearings, slides, etc., and with its underside it is movably coupled to the horizontal linear reciprocating actuator 210a, 210b arranged below it. The horizontal linear reciprocating actuator 210a, 210b is mounted on the upper side of the plate of the base 212a, 212b. The horizontal linear guides 61 are mounted on the opposite edges of the plate of the base 212a, 212b. The horizontal linear reciprocating actuator 210a, 210b and the horizontal linear guide 61 are oriented parallel, and so the direction of the linear reciprocating movement of an unillustrated actuator member of the horizontal linear reciprocating actuator 210a, 210b and the direction of the linear reciprocating movement of the horizontal linear guide 61 are parallel.
The support 1 on which the vertical linear reciprocating actuator 200 is mounted is optionally integrated in a frame 4 (Fig. 2), in the upper part of which a vertical linear guide 7 of an unillustrated load of the tested object 3, e.g., a load for simulating the load of a tested seat by a seated person is mounted. During the operation of the device, the load is fixed in the horizontal directions X, Z and moves only in the vertical direction Y, while the tested object 3 moves in all three directions X, Y, Z.
The above-described device according to the invention for simulation of a moving vehicle operates in such a manner that, during operation of the device, the vertical linear reciprocating actuator 200, which is mounted on the support 1, moves the first base 212a, which is arranged above it, in the vertical direction Y, whereby the first horizontal linear reciprocating actuator 210a, which is mounted on the first base 212a, moves the second base 212b, which is arranged above it, in the first horizontal direction X, whereby the second horizontal linear reciprocating actuator 210b, which is mounted on the second base 212b, moves the carrier 211 a of the tested object which is arranged above it, in the second horizontal direction Z. This results in a smooth compound movement of the carrier 211 a of the tested object 3, which faithfully simulates the movement in a moving vehicle and faithfully simulates the forces in the moving vehicle acting on the tested object 3. This device can be used, e.g., for long-term wear testing of the seat cushion of a loaded vehicle seat, for fatigue tests of the attachment of the vehicle seat, wheel carrier, registration plate, etc. to the vehicle body or frame, etc.
List of references
1 support
2 movement mechanism
20 vertical positioning node
200 vertical linear reciprocating actuator
21 horizontal positioning node
210a first horizontal linear reciprocating actuator
210b second horizontal linear reciprocating actuator
211 a carrier of the tested object
211 b carrier of the second base
212a first base
212b second base
3 tested object
4 frame
5 connecting element
6a first horizontal module
6b second horizontal module
61 horizontal linear guide
7 vertical linear guide
X first horizontal direction
Y vertical direction
Z second horizontal direction

Claims

PATENT CLAIMS
1. A device for simulation of a moving vehicle, which comprises a support (1 ) on which a vertical positioning node is mounted and on the vertical positioning node, a horizontal positioning node is mounted, characterized in that the vertical positioning node comprises a vertical linear reciprocating actuator (200) and the horizontal positioning node comprises a first horizontal linear reciprocating actuator (210a) and a second horizontal linear reciprocating actuator (210b), the horizontal linear reciprocating actuators (210a, 210b) being arranged above each other in mutually parallel planes, whereby the first horizontal linear reciprocating actuator (210a) is adapted to move in a first horizontal direction (X), the second horizontal linear reciprocating actuator (210b) is adapted to move in a second horizontal direction (Z) and the first horizontal direction (X) and the second horizontal direction (Z) are oriented transversely to each other.
2. The device according to claim 1 , characterized in that the vertical linear reciprocating actuator is movably coupled to a first base (212a) arranged above it on which is mounted the first horizontal linear reciprocating actuator (210a) which is movably coupled to a second base (212b) arranged above it, on which is arranged the second horizontal linear reciprocating actuator (210b) which is movably coupled to a carrier (211 a) of the tested object (3) which is adapted to accommodate the tested object (3).
3. The device according to claim 2, characterized in that a carrier (21 1 b) of the second base (212b) is arranged between the first horizontal linear reciprocating actuator (210a) and the second base (212b), the carrier (211 b) being adapted to receive the second base (212b).
4. The device according to claim 2 or 3, characterized in that at least one base (212a, 212b) is provided with a horizontal linear guide (61 ) oriented parallel to the horizontal direction (X, Z) of the linear movement of the horizontal linear reciprocating actuator (210a, 210b) mounted on the same base (212a, 212b).
5. The device according to claim 2 to 4, characterized in that the carrier (211 a) of the tested object (3) is adapted in size and shape to accommodate a vehicle seat.
6. The device according to claim 5, characterized in that the support (1 ) is arranged in a frame (4) in which a vertical linear guide (7) is arranged above the carrier (211 a) of the tested object (3) for fixing horizontally the load of the vehicle seat.
PCT/CZ2022/050020 2021-10-26 2022-02-23 Device for simulation of a moving vehicle WO2023072320A1 (en)

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CZPV2021-39309 2021-10-26
CZ202139309U CZ35663U1 (en) 2021-10-26 2021-10-26 Equipment for simulating a moving vehicle

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6058526A (en) * 1983-09-12 1985-04-04 Tachikawa Spring Co Ltd Endurance testing apparatus in getting on and off vehicle seat and the like
JPS60140137A (en) * 1983-12-27 1985-07-25 Hino Motors Ltd Apparatus for testing getting-on-and-off durability of seat
US10203266B2 (en) * 2013-12-12 2019-02-12 Kokusai Keisokuki Kabushiki Kaisha Bearing testing machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6058526A (en) * 1983-09-12 1985-04-04 Tachikawa Spring Co Ltd Endurance testing apparatus in getting on and off vehicle seat and the like
JPS60140137A (en) * 1983-12-27 1985-07-25 Hino Motors Ltd Apparatus for testing getting-on-and-off durability of seat
US10203266B2 (en) * 2013-12-12 2019-02-12 Kokusai Keisokuki Kabushiki Kaisha Bearing testing machine

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