JP2010075567A - Lift device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lift device for a vehicle, having a function of a bridge board between a floor surface or the like on the vehicle side and a platform when the platform is connected to the vehicle, and equipped with a flapper to be erected when the platform is lifted up/down to secure the safety of an occupant. <P>SOLUTION: The lift device 1 for the vehicle is a parallelogram link 2, in which proximal ends of an upper link 12 and a lower link 13 are journaled to a base set in the vehicle 5 separately from each other, and distal ends of the upper link 12 and the lower link 13 are journaled and supported to the upper ends of side frames 3 separately from each other, and in which a cylinder expansion/contraction mechanism is disposed. The lift device 1 has a front flapper 6 which automatically rises or falls by utilizing the relative rotation generated when the distal end of the upper link 12 or lower link 13 and the upper end of the side frame 3 are lifted by a cam at the distal end of the upper link 12 or lower link 13 and a wire rope 26 whose one end is connected to a connection rod connected to the cam and whose other end is connected to the front flapper 6 of the platform 4. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention falls down automatically when the platform is connected to the vehicle when using the lift, and has a role of a transfer plate that passes between the floor surface of the vehicle and the platform, and when the platform is lifted The feet of occupants who are standing up and riding on the platform in a wheelchair are safe so that they do not interfere with the vehicle bumper, etc., and the front flapper is automatically raised when the platform is stored, and the storage volume, especially the front and back length, is reduced. The present invention relates to an elevating device for a vehicle including a front flapper that is reduced.

  Conventionally, Patent Document 1 includes a body frame that has left and right outer rails and is fixed to a vehicle side, a guide rail that is guided by the outer rails so as to be movable up and down, and is urged in a pulling direction by a spring. An inner rail that is movable up and down with respect to the outer rail and the guide rail, a slider that is guided to move up and down with the inner rail, and a lower end of the slider that is pivotally attached to the inner rail when opened. A platform supported in a horizontal state, a first wire rope for pulling up the inner rail, one end portion is fixed to the outer rail, wound around the sheep, and the other short is fixed to the slider. A second wire rope that pulls up the slider with the rise of the inner rail. Idoreru a vehicle lifting device to support said inner rail descends together with the inner rail, those using wire rope as a vehicle driving force of the cylinder drive source have been proposed.

  As disclosed in Patent Document 2, the present applicant has proposed a vehicle lifting device that uses a wire rope as a means for transmitting driving force of a cylinder drive source, as in Patent Document 1.

  In Patent Document 3, a rear end portion of a handrail 42 erected on the platform 17 is extended to the flap 21 side to form an inclined portion 43, and an intermediate portion of the operation lever 46 is formed at the end portion of the inclined portion 43. The support bracket 44 is pivotally supported. A lock release link 61 for releasing the lock mechanism 22 of the flap 21 is pivotally supported at the lower end below the shaft support portion of the operation lever, and a moving link 71 is pivotally supported on the support bracket 44 of the operation lever 46. With the tilting operation, the movement link 71 is allowed to move along the tilted portion 43, the movement link 71 is connected to the flap 21 via the wire 73, and the raising operation of the flap 21 by the operation lever 46 is completed. In some cases, the locking mechanism 22 is sometimes locked and, on the contrary, in the inversion operation of the flap 21, the locking mechanism 22 is first released and then the flap 21 and the locking mechanism 22 can be grounded. Has been.

Japanese Unexamined Patent Publication No. 6-305354 Japanese Unexamined Patent Publication No. 2000-16148 Japanese Patent Laid-Open No. 2001-95851

  It acts as a transfer plate that passes between the floor on the vehicle side and the platform, and the undulation action automatically follows the raising and lowering of the platform, and when the platform is raised and lowered, stand up and ride on the platform with a wheelchair Elevating device for a vehicle having a front flapper that automatically raises the front flapper during storage of the platform and the front flapper that reduces the storage volume, particularly the front-rear length, when the occupant's foot does not interfere with the vehicle bumper, etc. Is in the provision of.

  An object of the present invention is to provide an elevating device for a vehicle including a front flapper that reduces the cost without newly installing a special power source using a main elevating power source.

  An object of the present invention is to provide an elevating device for a vehicle having a smart front flapper on the design.

  In the present invention, the base ends of the upper link and the lower link are separated from and supported by a base installed in the vehicle, and the distal ends of the upper link and the lower link are spaced apart and supported by the upper end of the side frame. A hydraulic cylinder drive source is installed at the upper part of the base and upper link or lower link, and is held in a fixed posture with respect to the side frame by swinging around the base end of the parallelogram link. A parallelogram link vehicle elevating device for elevating and lowering a platform supported on a side frame and raising and lowering the platform with respect to the side frame, wherein the upper end of the upper link or the lower link and the upper end of the side frame A cam that is arranged around a support shaft at the tip of the upper link or the lower link, using relative rotation generated when the A linkage pivotally supported on the upper end of the side frame, connected to the cam and rotated, and linked to one end of the wire rope to the linkage, and the other end of the platform is supported by the side frame. There exists in the raising / lowering apparatus for vehicles provided with the front flapper linked.

  In the present invention, the base ends of the upper link and the lower link are separated from and supported by a base installed in the vehicle, and the distal ends of the upper link and the lower link are spaced apart and supported by the upper end of the side frame. A hydraulic cylinder drive source is installed at the upper part of the base and upper link or lower link, and is held in a fixed posture with respect to the side frame by swinging around the base end of the parallelogram link. A parallelogram link vehicle elevating device for elevating and lowering a platform supported on a side frame and raising and lowering the platform with respect to the side frame. The elevating device is arranged around the support shaft at the tip of the upper link or the lower link. And a cam that is pivotally supported at the upper end of the side frame and a roller connected to the cam is pivoted at one end. The other end is pivotally supported by a traction sheave, one end is a platform whose base end is pivotally supported by the lower end of the side frame, and the platform is pivotally forward of the base end. The front end of the front flapper is pivotably supported by the base end, and one end is connected to the front end of the front flapper, and the other end is connected and fixed to the upper end of the side frame. It is good also as a raising / lowering apparatus for vehicles provided with the front flapper which consists of a wire rope stretched around the sheave for continuous pulling.

  In the present invention, as a stand-up storage mechanism for a platform, one link constituting a V-shaped two-bar link is supported by a support shaft that pivotally supports the articulated follower, and each tip of the other link is pivotally attached. The opposite base end of the side frame is pivotally connected to an intermediate shaft disposed between the support shaft at the distal end portion of the lower link of the side frame and the pivot supporting the base end portion of the platform, and is opposite to the other link. The base end is pivotally connected to the front end of the base end of the platform with a support shaft, and the upper link and the lower link are turned upright by the operation of the hydraulic cylinder drive source, and the corresponding surfaces of the lower link and the side frame are brought close to each other. -Connect and connect the connected follower to the back of the lower link, push the connected follower backward, expand the V-shaped two-bar link from the middle axis of the side frame, and the base end of the platform Down Lowered, provided with a standing storage mechanism of the platform to be erected by rotating the platform about the pivot axis, but may be a vehicle lifting device comprising a front flapper erected by pulling upon storage.

  The main lifting power source can be used without newly installing a special power source, which is advantageous in terms of cost.

  In the design, the undulation mechanism of the front flapper does not appear in the appearance, and it is smart.

  It acts as a transfer plate that passes between the floor of the vehicle and the platform, and the undulation action follows the platform up and down accurately and reliably, and when the platform is raised and lowered, stand up and use the wheelchair to the platform. It is possible to provide an elevating device for a vehicle including a front flapper having safety in which a rider's feet on the rider do not interfere with a vehicle bumper or the like.

  The base end of the upper link and the lower link is pivotally supported on the base installed in the vehicle, the tip of the upper link and the lower link is spaced apart and pivotally supported on the upper end of the side frame, and is supported. A parallelogram link is provided by providing a cylinder expansion / contraction mechanism on the upper portion of the upper shaft and the support shaft that pivotally supports the base end portion of the lower link on the base, and the undulations around the base end portion of the parallelogram link In the vehicle lifting device of a parallelogram link, the platform is supported in a fixed posture with respect to the side frame and is lifted and lowered by the platform supported on the side frame, and the platform is stowed up and down with respect to the side frame. A cam arranged around a support shaft of the tip of the lower link, utilizing the relative rotation that occurs when the tip of the link and the upper end of the side frame are raised and lowered, A linkage pivotally supported by the upper end of the id frame and connected to the cam, and a front flapper of the platform having one end of the wire rope linked to the linkage and the other end supported on the side frame; A front flapper that is linked to each other, and one link that forms a V-shaped two-bar link with a support shaft that pivotally supports the connected follower, and the other end of the other link are pivotally attached, opposite to one link The base end of the side frame is pivotally connected to an intermediate shaft disposed between the support shaft at the distal end portion of the lower link of the side frame and the pivot shaft that pivotally supports the base end portion of the platform, and the opposite base end of the other link Is connected to the front end of the base end portion of the platform with a support shaft, and the upper link and the lower link are turned upright by the operation of the hydraulic cylinder driving source, and the connected follower portion is connected to the rear surface of the facing lower link. Connect this Equipped with a platform upright storage mechanism that pushes the articulated follower backward, pushes down the base end of the platform downwards, and turns the platform around the pivot axis to stand up. Elevator for vehicles provided with a front flapper.

  The vehicle lifting apparatus of the present invention will be described with reference to the drawings showing an example of the embodiment. The vehicle lifting apparatus 1 of the present invention is supported on a parallelogram link 2 and a side frame 3 of the parallelogram link 2. A front flapper 6 disposed on the front side of the platform 4 facing the vehicle 5 of the platform 4 and operating in conjunction with the raising and lowering of the parallelogram link 2; and on the rear side of the platform 4 opposite to the vehicle A rear flapper 7 provided, a storage standing mechanism 8 for standing up when the platform 4 is folded and horizontally deploying when the platform 4 is raised and lowered, and a handrail 9 provided in the storage standing mechanism 8 are provided.

  The parallelogram link 2 includes a bracket 11 standing on a base plate 10 attached to a floor surface 5a of a vehicle 5, an upper link 12 and a lower link 13 having base ends 12a and 13a at the vehicle floor surface. The upper end portions 12b and 13b of the same distance from the respective pivot support points are pivotally supported by the pivot shafts 14a and 15a so as to be separated from the upper and lower sides and back and forth from 5a. A support shaft 15a which is pivotally supported by support shafts 14b and 15b on the upper end portion 3a of the side frame 3 so as to be spaced apart from each other at substantially the same interval, and which supports the lower link 13 on the bracket 11. A hydraulic cylinder drive source 17 is provided between the upper link 12 and a support shaft 16 that is supported at an appropriate position near the upper end of the upper link 12. The hydraulic cylinder drive source 17 is connected to an oil supply / discharge device (not shown) having a hydraulic pump (not shown).

  The platform 4 is pivotally supported by the lower end portion 3b of the side frame 3 of the parallelogram link 2 with a pivot 18 so that the base end portion 4a can be raised and lowered, and is provided on the outer surface of the base end portion 4a of the platform 4. The stopper 19 and the front edge 3b1 of the lower end portion 3b of the side frame 3 collide with each other, so that the rotation of the platform 4 due to gravity stops and the horizontal position of the loading surface 4b of the platform 4 is maintained. It has been.

  The storage upright mechanism 8 of the platform 4 includes two links 22a that constitute a V-shaped two-bar link 22 by a support shaft 21 that pivotally supports the articulated follower 20, and each tip 22a1 of the other link 22b. , 22b1 and a base end portion 22a2 opposite to one link 22a is connected to a support shaft 15b of the front end portion 12b of the lower link 12 of the side frame 3 and a pivot shaft 18 that pivotally supports the base end portion 4a of the platform 4. The base end portion 22b2 opposite to the other link 22b is pivotally connected to the front end of the base end portion 4a of the platform 4 with a support shaft 24, and is connected to the upper link 12. The lower link 13 is turned upright by the operation of the hydraulic cylinder drive source 17, and the corresponding surfaces of the lower link 13 and the side frame 3 are brought close to and connected to the back surface of the lower link 13. The connecting / following portion 20 is connected, the connecting / following portion 20 is pushed backward, the V-shaped two-node link 22 is expanded from the intermediate shaft 23 of the side frame 3, and the base end portion 4a of the platform 4 is moved downward. Since the platform 4 is pushed down, the platform 4 stands up by rotating around the pivot 18.

  The front flapper 6 is rotatably supported at the base end portion 6b by the support shaft 24, and one end portion 26a of the wire rope 26 is connected to the support shaft 25 provided on the tip end portion 6a side from the support shaft. The wire rope 26 is pulled up to the other end side so that it can be raised and lowered in balance with the weight on the tip side.

  The wire rope 26 is guided by a first sheave 27 and a second sheave 28 that are pivotally supported on the lower end portion 3b side and the upper end portion 3a side of the side frame 3, and the other end portion 26b on the upper end portion 3a of the side frame 3. Has reached.

  A cam 29 integral with the lower link 13 is provided around the axis of the support shaft 15b that rotatably supports the tip of the lower link 13 at the upper part of the side frame 3.

  A linkage 31 is provided on a support shaft 30 provided on the upper end portion 3 a of the side frame 3 so as to be pivotable with an intermediate portion thereof supported. A roller 32 is provided at one end portion of the support shaft 30 with a support shaft 33. Then, a tow sheave 34 is pivotally supported on the opposite other end by a support shaft 35, and the other end 26 b of the wire rope 26 is guided by the tow sheave 34, and then the other end 26 b is moved to the side. It connects with the upper end part 3a of the flame | frame 3 with the spindle 36, and in an Example, it connects via the adjustment tool 37 so that the position of the other end part 26b and the spindle 36 can be adjusted, and this adjustment tool 37 is adjusted. The wire rope 26 is tensioned so that the roller 32 of the linkage 31 is always connected to the cam 29.

  As shown in FIG. 22, the cam 29 has a cam surface 38 with the roller 32, the zero point is the lowest push cam surface of the front flapper 6, and the W1 side is the push cam surface when the platform 4 is raised and lowered, particularly its V1 position. Is formed on the maximum push-up cam surface, and the W2 side is formed on the push-up cam surface when the platform 4 is retracted, particularly the V2 position is formed on the maximum push-up cam surface.

  When the platform 4 touches the road surface or the like, the rear flapper 7 automatically unlocks the standing position by the grounding movable mechanism and rotates to the prone position. From the loading surface 4b of the platform 4 to the road surface or the like, Alternatively, the wheelchair can be moved from the road surface or the like to the loading surface 4b of the platform 4. When the platform 4 is lifted away from the road surface or the like again, the rear flapper 7 automatically stands up and locks to the standing state.

  The handrail 9 is provided integrally with one link 22a constituting the V-shaped two-bar link 22 and rotates together with the one link 22a.

  As shown in FIG. 1, when the oil circuit (not shown) of the hydraulic cylinder drive source 17 is opened with the front flapper 6 lying down and connected to the floor 5 a of the vehicle 5, the upper link 12. The hydraulic cylinder drive source 17 is supported by a support shaft 15a at the base end of the lower link 13 and a support shaft 16 that is supported at a position near the upper end of the upper link 12 by the gravitational action of the side frame 3 and the platform 4 that are applied to the front end of the lower link 13. The hydraulic cylinder drive source 17 is discharged to reduce the space between the support shaft 15a and the support shaft 16, and the platform 4 is lowered at a low speed. At this time, a straight line connecting the two points formed by the support shaft 14b at the distal end of the upper link 12 and the support shaft 15b at the distal end of the lower link 13 is based on the principle of a parallelogram link and is supported at the base end of the upper link 12. It is parallel to a straight line connecting two points formed by the shaft 14 a and the support shaft 15 a at the base end of the lower link 13, and the angle of the straight line is between the support shaft 14 a at the base end of the upper link 12 and the lower link 13. The cam 29 is integrally fixed around the connecting shaft 31 on the upper end portion 3a of the side frame 3 and the supporting shaft at the distal end of the lower link 13 because it is maintained without being changed by the rotation about the supporting shaft 15a at the base end. Moves relative to each other, moves the roller 32 from the lowest cam surface to the push-up cam surface at the time of raising and lowering, and rotates the linkage 31 around the support shaft 30, so that the towing sheave 34 is rotated, and the wire rope 26, towing sheave 3 The towing twice the length of the distance of the rotation, the flapper 3 before connecting to the wire rope 26, as shown in FIGS. 4 and 6, erecting rotates around the support shaft 24. Therefore, when the front flapper 6 is immediately lifted with the lowering movement of the platform 4 and is slightly lowered from the floor surface 5a of the vehicle 5, as shown in FIGS. 7 and 9, the front flapper 6 stands up completely from the front end side. Fall prevention is intended. In this state, the roller 32 reaches the maximum push-up cam surface at the tip of the cam 29. With this state maintained and the front flapper 6 standing up, the platform 4 descends and contacts the road surface or the like.

  Next, the ascending movement of the platform 4 pushes up the piston by sending oil to the hydraulic cylinder drive source 17 by a hydraulic pump (not shown), and the distance between the support shaft 15a and the support shaft 16 is increased. The lower link 13 rotates about the support shafts 14a and 15a of the respective base end portions 12a and 13a, the tip end portions 12b and 13b rise, the platform 4 supported on the side frame 3 rises, The flapper 7 stands up automatically, and the respective parts operate in the reverse order as described above. The front flapper 6 lies down at the highest position of the platform 4 and passes to the floor surface 5 a of the vehicle 5.

  Next, in order to fold the entire vehicle lifting / lowering device 1 of the present invention to the retracted position, oil is further fed to the hydraulic cylinder drive source 17 by a hydraulic pump (not shown) and the piston is pushed up to support the support shaft 15a. Since the distance from the support shaft 16 is further increased, the upper link 12 and the lower link 13 are rotated about the support shafts 14a and 15a of the respective base end portions 12a and 13a, and the distal end portions 12b and 13b are raised. At this time, the cam 29 integral with the lower link 13 rotates and pushes up the roller 32 of the linkage 31 that contacts the cam surface when retracted, so that the wire rope 26 is pulled as in the lowering movement of the platform 4. The front flapper 6 is raised again to stand. When the corresponding surfaces of the lower link 13 and the side frame 3 approach and are connected to each other and the connecting driven portion 20 is connected to the back surface of the lower link 13, the connecting driven portion 20 is pushed out rearward and the intermediate shaft 23 of the side frame 3 is pushed. However, since the V-shaped two-node link 22 is expanded at the base point and the base end portion 4a of the platform 4 is pushed downward, the platform 4 is pivoted about the pivot 18 and stands up.

  Since the support shaft 25 on the base end portion 4a of the platform 4 rotates about the pivot shaft 18 and the distance from the first sheave 27 is increased, the front flapper is secured when the other end of the wire rope 26 is fixed. 6 is pulled up around the support shaft 25 and stands up automatically. The front flapper 6 is pulled up to a required angle by pulling up the wire rope 26 by turning around the pivot 18 of the base end portion 4 a of the platform 4 and pulling up the wire rope 26 by the cam 29.

  As shown in FIG. 19, the upper link 12 and the lower link 13 stand up in the maximum vertical direction by extending the hydraulic cylinder drive source 17 to the maximum extent. At this time, the hydraulic pump to the hydraulic cylinder drive source 17 is stopped, and the oil supply / discharge device is closed. In this state, as shown in FIG. 20, the roller 32 of the linkage 31 is riding on the maximum push-up surface when the cam 29 is retracted and raised, so that the wire rope 26 is adjusted as shown in FIG. The front flapper 6 is raised up to a required angle.

  Since the handrail 9 is provided integrally with the one link 22a, the handrail 9 is rotated and folded together with the one link 22a. Then, the handrail 9 is manually moved to the position of the temporary line shown in FIG. 19 to complete the storage of the vehicle lifting apparatus of the present invention.

  The front flapper of the vehicle lifting and lowering device of the present invention has a role of a transfer plate that passes between the floor surface on the vehicle side and the platform. When the platform is raised and lowered, the front flapper automatically stands up accurately and reliably to the platform. It secures safety so that the legs of passengers riding in a wheelchair do not interfere with a vehicle bumper, etc., and stands up automatically when the platform is stored, thereby reducing the storage volume, particularly the longitudinal length.

  The vehicle lifting / lowering device of the present invention is advantageous in terms of cost because a special power source for operating the front flapper is not newly provided.

  Since the wire rope for operating the front flapper is disposed inside the side frame and connected to the front flapper, the vehicle lifting apparatus of the present invention can be provided smartly in design.

FIG. 2 is an overall side view showing a state in which the platform is unfolded, the front flapper is tilted down, and the vehicle is lifted between the floor surface and the platform in the vehicle lifting apparatus of the present invention. In FIG. 1, it is an expanded partial side view which shows the assembly | attachment state of the front-end | tip part of an upper link and a lower link, and the upper end part of a side frame. Similarly, in FIG. 1, it is an enlarged partial side view showing the assembled state of the base end portion of the front flapper, the base end portion of the platform, and the lower end portion of the side frame. FIG. 5 is an overall side view showing a state in which the front flapper stands up according to the descent when the platform is developed and descent is started in the vehicle elevating device of the present invention. In FIG. 4, it is an enlarged partial side view which shows the operation state of the front-end | tip part of an upper link and a lower link, and the upper end part of a side frame. Similarly, in FIG. 4, it is an expanded partial side view which shows the operation state of the base end part of a front flapper, the base end part of a platform, and the lower part of a side frame. FIG. 4 is an overall side view showing a state where the front flapper is completely raised immediately after the platform is deployed and descending is started in the vehicle lifting apparatus of the present invention. In FIG. 7, it is an enlarged partial side view which shows the operating state of the front-end | tip part of an upper link and a lower link, and the upper end part of a side frame. Similarly, in FIG. 7, it is an enlarged partial side view showing the operating state of the base end portion of the front flapper, the base end portion of the platform, and the lower portion of the side frame. FIG. 4 is an overall side view showing a state in which the front flapper stands up when the platform is deployed and lowered and the platform contacts the road surface or the like in the vehicle lifting apparatus of the present invention. In FIG. 10, it is an enlarged partial side view which shows the action | operation state of the front-end | tip part of an upper link and a lower link, and the upper end part of a side frame. Similarly, in FIG. 10, it is an expanded partial side view which shows the action | operation state of the base end part of a front flapper, the base end part of a platform, and the lower part of a side frame. FIG. 5 is an overall side view showing a standing state of the front flapper when the platform is raised and stored in the vehicle by power in the vehicle lifting apparatus of the present invention. In FIG. 13, it is an expanded partial side view which shows the operating state of the front-end | tip part of an upper link and a lower link, and the upper end part of a side frame. Similarly, in FIG. 13, it is an expanded partial side view which shows the operation state of the base end part of a front flapper, the base end part of a platform, and the lower part of a side frame. FIG. 4 is an overall side view showing the standing state of the front flapper when the platform is lifted to the vehicle by power in the vehicular lifting apparatus of the present invention and the storage is stopped. In FIG. 16, it is an enlarged partial side view which shows the action | operation state of the front-end | tip part of an upper link and a lower link, and the upper end part of a side frame. Similarly, in FIG. 16, it is an expanded partial side view which shows the operation state of the base end part of a front flapper, the base end part of a platform, and the lower part of a side frame. FIG. 5 is an overall side view showing a standing state of the front flapper when the platform is lifted by power to the vehicle and further manually moved from the storage stop state to the final storage position in the vehicle lifting device of the present invention. In FIG. 16, it is an enlarged partial side view which shows the action | operation state of the front-end | tip part of an upper link and a lower link, and the upper end part of a side frame. Similarly, in FIG. 16, it is an expanded partial side view which shows the operation state of the base end part of a front flapper, the base end part of a platform, and the lower end part of a side frame. It is an expanded side view of the cam arrange | positioned at the front-end | tip part of a lower link.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Elevator for vehicles of this invention 2 Parallelogram link 3 Side frame 3a Upper end part 3b Lower end part 3b1 Front edge 4 Platform 4a Base end part 4b Loading surface 5 Vehicle 5a Floor surface 6 Front flapper 6a Front end part 6b Base end part 7 Rear flapper 8 Retraction stand mechanism 9 Handrail 10 Base plate 11 Bracket 12 Upper link 12a Base end portion 12b Upper end portion 13 Lower link 13a Base end portion 13b Upper end portion 14a Support shaft 14b Support shaft 15a Support shaft 15b Support shaft 16 Support shaft 16 Support shaft 17 Hydraulic pressure Cylinder drive source 18 Axis 19 Stopper 20 Articulated follower 21 Support shaft 22 V-shaped two-node link 22a One link 22a1 Tip 22a2 Base end 22b The other link 22b1 Tip 22b2 Base end 23 Intermediate shaft 24 Support shaft 25 Support shaft 26 Wire rope 26a One end 26b Other Part 27 The first sheep 28 second sheave 29 consecutive cam 30 pivot 31 lever 32 roller 33 shaft 34 traction sheave 35 pivot 36 pivot 37 adjuster 38 cam surfaces

Claims (4)

  The base of the upper link and the lower link is separated from the base installed in the vehicle and is pivotally supported, and the upper link and the lower link are separated from the distal end and pivotally supported at the upper end of the side frame. A hydraulic cylinder drive source is installed above the base and upper link or lower link, and is held in a fixed posture with respect to the side frame by swinging around the base end of the parallelogram link. In a parallelogram link vehicle elevating device that elevates and lowers the platform to be moved and raises and lowers the platform with respect to the side frame, the upper link or lower link tip and the upper end of the side frame are generated during ascent A cam that is disposed around the support shaft at the tip of the upper link or the lower link, A linkage pivotally supported at the upper end of the frame, connected to the cam and rotated, and linked to one end of the wire rope to the linkage and the other end of the platform is supported by the side frame. A vehicle lifting apparatus including a front flapper that is linked.   The base end of the upper link and the lower link is pivotally supported on the base installed in the vehicle, the tip of the upper link and the lower link is spaced apart and pivotally supported on the upper end of the side frame, and is supported. A hydraulic cylinder drive source is installed above the base and upper link or lower link, and is held in a fixed posture with respect to the side frame by swinging around the base end of the parallelogram link. In a vehicle lifting apparatus for a parallelogram link that performs a lifting operation of the platform and an upright storage and lifting operation of the platform with respect to the side frame, a cam disposed around the support shaft at the tip of the upper link or the lower link The middle of the side frame is pivotably supported at the upper end, and the roller connected to the cam is pivotally supported at one end. The end of the platform is pivotally supported by a traction sheave, one end is a platform whose base end is pivotally supported by the lower end of the side frame, and the base end is forward of the pivot point of the base end of the platform. One end is connected to the front flapper, which is supported by the portion, and can be raised and lowered, and the other end of the front flapper is connected to and fixed to the upper end of the side frame. A vehicle lifting device comprising a front flapper made of a wire rope stretched around a towing sheave.   One link constituting the V-shaped two-bar link is supported by a support shaft that pivotally supports the articulated follower, and each tip of the other link is pivotally attached. The lower link is pivotally connected to an intermediate shaft that is arranged between the support shaft at the distal end of the lower link and the pivot that pivots the base end of the platform, and the opposite base end of the other link is connected to the base end of the platform. The front link is pivotally connected with a support shaft, the upper link and the lower link are turned upright by the operation of the hydraulic cylinder drive source, and the corresponding surfaces of the lower link and the side frame are brought close to and connected to the back of the lower link. Connect the follower, push this connected follower backward, expand the V-shaped two-bar link from the middle axis of the side frame, push down the base end of the platform downward, and center around the pivot Rotate the platform Comprising a standing storage mechanism of the platform for standing, the vehicle lifting device according to claim 1 or claim 2 comprising a front flapper erected by pulling upon storage.   The base end of the upper link and the lower link is pivotally supported on the base installed in the vehicle, the tip of the upper link and the lower link is spaced apart and pivotally supported on the upper end of the side frame, and is supported. A hydraulic cylinder drive source is installed above the base and upper link or lower link, and is held in a fixed posture with respect to the side frame by swinging around the base end of the parallelogram link. In a parallelogram link vehicle elevating device that elevates and lowers the platform to be moved and raises and lowers the platform with respect to the side frame, the upper link or lower link tip and the upper end of the side frame are generated during ascent A cam that is disposed around the support shaft at the tip of the upper link or the lower link, A linkage pivotally supported at the upper end of the frame, connected to the cam and rotated, and linked to one end of the wire rope to the linkage and the other end of the platform is supported by the side frame. It has a front flapper that is linked, and one link that forms a V-shaped two-bar link with a support shaft that pivotally supports the connected follower, and each tip of the other link is pivotally attached, opposite to one link The base end of the side frame is pivotally connected to an intermediate shaft disposed between the support shaft at the distal end portion of the lower link of the side frame and the pivot shaft that pivotally supports the base end portion of the platform, and the opposite base end of the other link Are connected to the front end of the base end portion of the platform with a support shaft, and the upper link and the lower link are turned upright by the operation of the hydraulic cylinder drive source, and the connected follower portion is placed on the back of the facing lower link. Connected, this connected follower It is equipped with a platform upright retracting mechanism that pushes backward, pushes down the base end of the platform downward, rotates the platform around the pivot axis, and stands up by pulling up the wire rope during the upright storage. Elevating device for vehicles provided.

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