JP5411647B2 - Car carrier alignment machine - Google Patents

Description

  The present invention relates to a vehicle transport vehicle in which a platform is moved backward and tilted backward so that a transported vehicle can be loaded on the platform, and more specifically, the center line of the platform in a plan view in the state of rear loading of the platform is the center line of the vehicle. The present invention relates to a platform alignment device for a vehicle transporter that can automatically match the centerline of the platform with the centerline of the vehicle when the platform is stored on the vehicle from an angle with respect to the vehicle. It is. Note that the vehicle transport vehicle that is the subject of the present application can be applied to transport of agricultural machines, small ships (boats), heavy machinery, etc. in addition to vehicles as transport objects.

  This type of vehicle transport vehicle is configured such that the loading platform is moved backward with respect to the inclined frame and the loading platform is tilted backward together with the tilting frame so that the transported vehicle can be loaded on the loading platform. For example, in addition to general vehicle heights of general vehicle heights, there are low vehicle heights of low vehicle heights such as sports cars. In a low vehicle height vehicle, when the vehicle is loaded, the loading platform inclination angle is large (for example, the loading platform inclination angle for loading a general high vehicle is about 10 °), and the front portion of the loading vehicle comes into contact with the loading platform floor surface. Therefore, a vehicle carrier vehicle that can reduce the loading platform inclination angle (for example, about 6 °) is used for loading low and high vehicles. In the following description, the loading platform inclination angle for loading a general high vehicle may be simply referred to as a normal inclination angle, and the loading platform inclination angle for loading a low vehicle height may be simply referred to as a gentle inclination angle.

  By the way, in recent vehicle transport vehicles, it is possible to use a single vehicle transport vehicle so that the loading platform tilt angle can be selectively used as a slow tilt angle for loading a low vehicle height and a normal tilt angle for loading a general vehicle height vehicle. There is what I did.

  FIGS. 18 to 21 show a vehicle transport vehicle disclosed in Japanese Patent Application Laid-Open No. 2008-207573 (Patent Document 1) already filed by the present applicant. The vehicle transport vehicle of this known example is as follows. It is configured. In the following description, the front or front part refers to the front side of the vehicle 1, the rear or rear part refers to the rear side of the vehicle 1, and the left and right refer to the width direction of the vehicle 1. .

  As shown in FIGS. 18 and 19, this known vehicle carrier vehicle includes a vehicle 1 having a pair of left and right chassis frames 11 and guide rails 2 (a pair of left and right pairs) fixed to a subframe 12 on each chassis frame 11. A pair of left and right inclined frames 3 supported at the rear end of the sub-frame 12 in a freely tiltable manner, a load platform 4 supported on each tilt frame 3 so as to be movable in the longitudinal direction of the vehicle, and a load platform 4 And a tilting device 5 that has a telescopic cylinder 51 that moves in the vehicle longitudinal direction with respect to the tilting frame 3 and tilts the tilting frame 3 together with the loading platform 4 with respect to the guide rail 2 by the telescopic movement of the telescopic cylinder 51. .

  Each inclined frame 3 supports a position slightly rearward from the central portion in the length direction on the rear end portion 13 of the subframe 12 so as to be tiltable (support portion 8). In addition, as shown in FIG. 19, the support portion 8 is obtained by pivotally supporting a bracket 82 provided on the lower surface of the inclined frame 3 with a support shaft 83 on a bracket 81 provided on the rear end portion of the subframe 12. Downward supporting legs 9 are attached to the rear end portions of the respective inclined frames 3.

  The tilted frame 3 has a retracted posture that is in a horizontal state on the subframe 12 as shown in FIG. 18, and a rearward tilted posture in which the support legs 9 are grounded around the support portion 8 as shown in FIG. It can be tilted between.

  The loading platform 4 has two left and right bottom frames (hereinafter referred to as vertical joists) 42 on the lower surface of the vehicle mounting platform 41. Grounding rollers 43 are attached to the lower surface of the rear end portion of the vehicle mounting base 41 at positions closer to the left and right outer ends, respectively. At the rear end of the loading platform 4, a turn plate 44 is attached so as to be raised and lowered. The moving body 6 is pivotally supported by a support shaft 64 at the front end portion of the vertical joist 42. The moving body 6 is movable along the inclined frame 3 and can be moved back and forth by the telescopic cylinder 51 and the chain 7. The loading platform 4 can be moved in the vehicle front-rear direction with respect to the inclined frame 3 via the moving body 6.

  The tilting device 5 includes left and right guide rails 2, one telescopic cylinder 51, and a roller 55 that is attached to the tube of the telescopic cylinder 51 and moves along the guide rail 2. The tilting device 5 can tilt the tilt frame 3 together with the loading platform 4 by the stretching motion of the telescopic cylinder 51, and can also move the loading platform 4 in the vehicle front-rear direction with respect to the tilting frame 3.

  The vehicle carrier of this known example adjusts the extension amount of the telescopic cylinder 51 from the loading platform retracted state of FIG. 18 so that the tilt frame 3 and the loading platform 4 are normally tilted for loading a general vehicle height vehicle shown in FIG. It is possible to set two inclination angles, an angle (about 10 °) and a gentle inclination angle (about 6 °) for loading a low vehicle height shown in FIG. That is, when the telescopic cylinder 51 is extended from the loading platform retracted state of FIG. 18, the roller 55 moves rearward along the guide rail 2, so that the inclined frame 3 tilts backward together with the loading platform 4. The body 6 moves backward and the loading platform 4 moves rearward with respect to the inclined frame 3. As shown in FIG. 20, when the grounding roller 43 at the rear end of the loading platform is in contact with the ground, the lower surface near the front of the loading platform 4 (vertical joist 42) is still on the rear end of the subframe 12. The cargo bed 4 has a normal inclination angle (about 10 °) for loading a general high vehicle.

  Further, when the telescopic cylinder 51 is further extended from the state shown in FIG. 20, when the tilting frame 3 is further tilted backward and the support leg 9 is grounded, the backward tilting operation of the tilting frame 3 is stopped. When the telescopic cylinder 51 is fully extended, as shown in FIG. 21, the front end portion of the loading platform 4 reaches the vicinity of the rear end of the inclined frame 3, and the loading platform 4 is loosely loaded for loading a low vehicle height vehicle. The inclination angle is about 6 °.

  By the way, when the telescopic cylinder 51 is extended from the loading platform retracted state (FIG. 18) and the loading platform 4 starts the backward tilting operation together with the tilting frame 3, the front end of the loading platform 4 until the grounding roller 43 at the rear end of the loading platform is grounded. Although the portion is supported by the inclined frame 3 at the moving body 6 portion, the vertical joists 42 are only placed on the rear end portion of the subframe 12 in a sliding contact state. It is quite unstable.

  If the ground on which the vehicle 1 is stopped is horizontal in the left-right direction, the back side of the loading platform will not swing left and right even if the loading platform 4 is in an unstable posture, but on the ground where the vehicle 1 is greatly inclined to the left and right. When the loading platform 4 is moved rearward while the vehicle is stopped, the rear side of the loading platform 4 is affected by the weight of the loading platform so as to swing toward the downward slope of the ground. In particular, when the transported vehicle S is mounted on the loading platform 4, a large load is applied to the loading platform 4, so that the swinging action toward the downward slope side of the ground is further increased.

  Further, when the loading platform 4 is extended, if the ground is greatly inclined to the left and right, the grounding roller 43 at the rear end of the loading platform is grounded and then the rear end of the loading platform 4 is moved when the loading platform 4 is further moved backward. The grounding roller 43 tends to advance toward the downward slope side of the ground, and at that time, the rear side of the loading platform 4 easily swings toward the downward slope side of the ground. In particular, in a state where the lower surface of the loading platform 4 (the lower surface of the vertical joist 42) moves backward until it is separated from the upper surface of the rear end portion of the subframe 12, the loading platform 4 is only at one point of the moving body 6 portion on the front end side. Since it is not supported, the rear side of the loading platform 4 is more likely to swing toward the downward slope side of the ground.

  In this way, when the rear loading operation of the loading platform 4 is performed in a place where the ground is greatly inclined to the left and right, for example, in the loading platform projection state shown in FIG. 21, the rear side of the loading platform 4 is shown by a chain line in FIG. To swing down the ground slope. That is, if the ground on which the vehicle 1 is stopped is horizontal in the left-right direction, the center line M of the cargo bed 4 becomes the center line L of the vehicle, as shown by the solid line in FIG. On the other hand, although they overlap in a straight line in plan view, at the place where the ground is greatly inclined in the left-right direction, the rear side of the loading platform may swing to the lower side of the inclination of the ground as described above. The center line M ′ is angled from the center line L of the vehicle 1. When the loading platform 4 'swings downward on the ground, each vertical joist 42' swings downward relative to the vehicle center line L.

JP 2008-207573 A

  By the way, in order to store the loading platform 4 on the vehicle 1 (subframe 12) from the loading platform extension state shown in FIG. 21, the telescopic cylinder 51 is reduced and the loading platform 4 is moved forward. When the side is swung to the lower side of the ground inclination as shown by a chain line in FIG. 22 (reference numeral 4 ′), the center line M ′ of the platform 4 ′ remains at an angle with respect to the center line L of the vehicle 1. 4 'moves forward.

  When the loading platform 4 ′ moves forward with an angle with respect to the center line L of the vehicle 1 in this manner, the mechanism portion (for example, each vertical joist 42 ′) on the loading platform 4 ′ side is moved to the mechanism portion (for example, an inclined surface) on the vehicle 1 side. Frame 3 and guide rail 2), and in the final retracted state, the rear side of the loading platform 4 'is left and right with respect to the vehicle 1 (each vertical joist 42' of the loading platform 4 'is a vehicle). 1).

  Accordingly, in the vehicle carrier of the above-described known example (FIGS. 18 and 19), when the loading operation is performed while the loading platform 4 'is at an angle with respect to the center line L of the vehicle 1 as shown in FIG. As described above, the mechanism part (for example, each vertical joist 42 ') on the loading platform 4' interferes with the mechanism part (for example, the inclined frame 3 and the guide rail 2) on the vehicle 1, and the interference part is deformed or damaged. In addition to the problem that there is a fear, there is a problem that the loading platform 4 ′ is displaced with respect to the vehicle 1 when the loading platform is stored (the side edge on the rear side of the loading platform protrudes outward from the normal posture).

  Therefore, the present invention relates to this type of vehicle transport vehicle, when the loading platform is retracted from an overhanging posture (reference numeral 4 'in FIG. 22) in which the loading platform has an angle with respect to the center line of the vehicle. So that the loading platform can be stored in a normal posture on the vehicle by moving the loading platform forward (while the loading platform center line M ′ is linearly aligned with the vehicle center line L). An object of the present invention is to provide a carrier alignment device.

  The present invention has the following configuration as means for solving the above problems. Note that the present invention is directed to a vehicle transporter that allows a vehicle to be loaded on the cargo bed by moving the cargo bed backward and tilting backward. Moreover, the vehicle transport vehicle which is the subject of the present application can be applied to transport of agricultural machines, small ships (boats), heavy machinery, etc. in addition to vehicles as transport objects.

[Invention of Claim 1 of the Present Application]
The vehicle transport vehicle used in the invention of claim 1 includes a vehicle having a chassis frame, an inclined frame supported in a tiltable manner at the rear end position of the chassis frame, and movable in the vehicle longitudinal direction on the inclined frame. And a telescopic cylinder that moves the cargo bed in the longitudinal direction of the vehicle with respect to the tilt frame, and a tilting device that can tilt the tilt frame.

  There are two sets of the chassis frame and the inclined frame on the left and right (vehicle width direction), respectively, and the tilting device also has a portion having two sets of members on the left and right.

  A pair of left and right subframes can be installed on the chassis frame, but those without a subframe can also be employed. In the claims of the present application, even a frame having a subframe is expressed as a chassis frame including the subframe.

  The inclined frame is long and has a pair of left and right. The inclined frame is supported to be tiltable at the rear end position of the chassis frame (or subframe). Each inclined frame is installed in parallel with the center line of the vehicle in plan view at a position distributed left and right at a predetermined equal interval from the center of the left and right width of the vehicle. In addition, a support leg is attached to the rear end portion of the inclined frame, and this support leg has the support height of the rear end portion of the inclined frame as "high support state" and "low support state" as in the embodiments described later. What was comprised so that it could change to was preferable.

  A grounding roller that rolls on the ground may be provided on the lower surface of the rear end of the loading platform. Moreover, the board boarding board can be attached to the rear-end part of a loading platform so that raising / lowering is possible.

  A long hydraulic cylinder is used as a telescopic cylinder for moving the loading platform back and forth. In addition, when the amount of back and forth movement of the loading platform cannot be secured sufficiently only by the expansion and contraction stroke of the expansion cylinder, the loading platform can be moved back and forth by twice the amount of expansion and contraction of the expansion cylinder using the double speed device. Can be. In addition, this double speed device can employ a chain, a wire or the like wound around a pulley.

  As a tilting device for tilting the tilt frame, any device having an appropriate configuration can be adopted as long as the tilt frame can be tilted. As a power source of the tilting device, the above-described telescopic cylinder for moving back and forth as described in the following embodiment may be used, or a tilting cylinder different from the telescopic cylinder may be used. .

  The loading platform can be displaced between a posture parallel to the inclined frame (normally inclined posture) and an inclined posture (slowly inclined posture) that is looser than the inclined angle of the inclined frame with the support leg at the rear end of the inclined frame in contact with the ground. can do. In this case, only one point at the front end of the loading platform is slidably supported forward and backward with respect to the inclined frame, while the lower surface of the loading platform (the bottom surface of the vertical joist that becomes the bottom frame) is slidable on the chassis frame (subframe). It is supported in a state where it is placed on.

  In this case, until the rear end of the loading platform contacts the ground with the tilting frame tilted backward and the support leg in contact with the ground, the loading platform maintains a parallel posture with respect to the inclined frame. When the loading platform further moves backward after the grounding, the loading platform is supported only at the front end of the loading platform with respect to the inclined frame, while the rear end of the loading platform moves back on the ground, so that the inclination angle of the loading platform is It becomes looser than the tilt angle of the tilt frame.

  By the way, this vehicle transporter sometimes loads and unloads the transported vehicle in a place where the ground is greatly inclined to the left and right. In that case, the following operation described in the background section above is performed. receive.

  That is, when the loading platform is extended backward from the storage position on the vehicle, the loading platform tilts backward together with the inclined frame, while the loading platform moves backward with respect to the inclined frame. At that time, the rear end of the loading platform (grounding roller) Until the ground is touched, the front end of the loading platform is supported by the inclined frame, but the bottom frame (vertical joist) on the bottom of the loading platform is only placed in sliding contact on the rear end of the subframe. The posture of the loading platform is considerably unstable. If the ground on which the vehicle is stopped is horizontal in the left-right direction, the rear side of the loading platform will not swing from side to side even if the loading platform is unstable, but the vehicle will stop on the ground that is largely inclined to the left and right. When the loading platform is moved rearward in a state where the loading platform is moved, the rear side of the loading platform is affected by the weight of the loading platform so as to swing toward the downward slope of the ground. In particular, when a transported vehicle is mounted on the loading platform, a large load is applied to the loading platform, so that the swinging action toward the downward slope side of the ground is further increased.

  Also, if the ground is tilted greatly to the left and right when the loading platform is extended, the grounding roller at the rear end of the loading platform is moved further after the grounding roller at the rear end of the loading platform is grounded and then moved backward. Tries to move toward the downward slope side of the ground, and at that time, the rear side of the loading platform easily swings toward the downward slope side. In particular, when the bottom surface of the cargo bed (the bottom surface of the vertical joist) is moving backward until it is separated from the top surface of the rear end of the chassis frame (subframe), the cargo bed is supported only at one point on the tip side. Further, the rear side of the cargo bed is more likely to swing toward the downward slope side of the ground.

  When the loading platform is to be stored on the vehicle while the rear side of the loading platform is swung toward the downward inclined side of the ground in the loading platform overhanging state, the loading platform side mechanism section (for example, each vertical joist) is replaced by the vehicle-side mechanism section (for example, tilting). There is a problem that the interference part may be deformed or damaged due to interference with a frame, a guide rail, etc., and there is also a problem that the loading platform is displaced with respect to the vehicle when the loading platform is stored.

  Therefore, the vehicle carrier used in the present application is adjusted so that the center line of the loading platform matches the center line of the loading platform when the loading platform is retracted, even when the loading platform overhangs the left and right sides of the loading platform. It is equipped with a loading platform alignment device that can be automatically performed.

  The load carrier alignment apparatus according to claim 1 of the present invention is provided with a bottom frame (vertical joist) facing in the front-rear direction on the lower surface of the load carrier, while the load carrier is in a position near the rear end of the inclined frame in a side view. Two guide members are attached so as to be slidably contacted with the side of the vertical joist of the loading platform when in the parallel posture, and to turn the loading platform in the front-rear direction to the parallel posture with respect to the inclined frame.

  The vertical joists on the lower surface of the loading platform with which each guide member is slidably contacted may be provided at two positions spaced apart from the center in the loading platform width direction by a predetermined distance, or only one in the vicinity of the center in the loading platform width direction. But you can. In the case of using two vertical joists, the inner surface of each vertical joist becomes the sliding surface of each guide member. In the case of using one vertical joist, the left and right sides of the single vertical joists are used. Each outer surface becomes a sliding surface of each guide member.

  In addition, each guide member that becomes the load carrier alignment device of the present application is configured such that each portion that slides on the side surface of the vertical joist is separated from the vertical joist side surface of each guide member and the lower side of each guide member is the vertical joist side surface. The inclined surface is close to. That is, in the case where each guide member is slidably contacted with each inner surface of the two vertical joists, the slidable contact portion of each guide member is an upwardly inclined surface facing inward, while each guide member is In the case where each of the vertical joists is brought into sliding contact with the respective outer side surfaces, the sliding contact portions of the respective guide members are respectively outwardly inclined surfaces.

  The inclined surface that is in sliding contact with the vertical joist side surface of each guide member is the opposite side of the vertical joist side (the entire cargo bed) along the inclined surface when the lower end of the vertical joist side surface contacts the inclined surface from above. It has a function to displace (to the vehicle center side).

  Each guide member preferably has a small frictional resistance when slidably contacting the vertical joist side. As each guide member, it is preferable to use a rotating roller that slides in contact with the vertical joist side surface and rolls as described in claim 2 described later. A plate may be used.

  The load carrier aligning device of claim 1 of the present application operates as follows.

  If the loading platform is moved backward while the vehicle is parked on the ground that is largely inclined to the left and right, the rear side of the loading platform may swing toward the downward slope of the ground in the loading platform extension state as described above. In that case, the cargo bed center line has an angle with respect to the vehicle center line.

  Further, when the loading platform is in the maximum overhanging state, the loading platform tilt angle is smaller than the tilting angle of the tilting frame, so that each guide member at the rear end portion of the tilting frame is located below the vertical joist of the loading platform. When the rear side of the loading platform is swung to the downward slope side of the ground, the vertical joist guide member sliding contact surface (side surface on which the guide member slides) is slightly displaced from right to left of each guide member. The positional deviation width is relatively small (within the range of the length in the left-right direction of the inclined surface of the guide member).

  Then, when the loading platform is retracted from the overhanging state where the rear side of the loading platform swings toward the downward slope of the ground, the loading platform and the tilting frame are parallel to each other as the loading platform moves forward relative to the tilting frame. (In the vehicle transport vehicle of the present embodiment, the tilt angle of the loading platform increases, while the tilt angle of the tilt frame decreases), and the tilt surface of either one of the guide members on the tilt frame side After the lower ends of the corresponding side faces of the vertical joists collide with each other, the vertical joists are displaced along the inclined surface to the side opposite to the loading platform swing side (direction in which the loading platform center line matches the vehicle center line). At this time, since the front end portion of the loading platform is supported so as to be immovable to the left and right with respect to the inclined frame, the rear side of the loading platform is displaced to the shake correction (alignment) side with the loading platform front end portion as the center. When the platform tilt angle and the tilt frame tilt angle become the same, the lower end of each inclined surface of each of the left and right guide members is in contact with (or substantially in contact with) each sliding side surface of the vertical joist, and the center of the load platform The line now matches the center line of the vehicle. Thereafter, the loading platform is moved to the final storage position while the loading platform center line and the vehicle center line match.

[Invention of claim 2 of the present application]
The invention of claim 2 of the present application is characterized in that, in the load carrier alignment apparatus of claim 1, a rotating roller that rolls when sliding on the side surface of the bottom frame (vertical joist) is used as each guide member. It is said.

  In addition, each guide member made of this rotating roller is also inclined with respect to the surface to be brought into sliding contact with the vertical joist side surface, but the inclined surface may be formed by inclining the axis of each rotating roller, or Each rotating roller may be formed by using a truncated cone having a narrow top.

  If a rotating roller is used for each guide member as in claim 2, the roller rolls when the inclined surface of the guide member comes into sliding contact with the vertical joist side surface, so that the frictional force at the sliding contact portion becomes extremely small. .

[Effect of the invention of claim 1 of the present application]
According to a first aspect of the present invention, there is provided a vehicle carrier centering device in which a carrier is moved to a rearward projecting position with respect to a set of two inclined frames so that an object can be placed on the carrier. Two guide members that can slide in contact with the sides of the bottom frame (vertical joists) of the loading platform at appropriate positions near the rear ends of the respective tilting frames so that the longitudinal direction of the loading platform is parallel to the inclined frame in plan view. Is installed. The surface of each guide member that is in sliding contact with the side surface of the bottom frame (vertical joist) is inclined such that the upper side of each guide member is separated from the side surface of the bottom frame and the lower side of each guide member is close to the side surface of the bottom frame. It is said.

  Then, when the loading platform is retracted from the overhanging state in which the rear side of the loading platform swings to the downward slope side of the ground, either one of the inclined surfaces of the two guide members on the inclined frame side and the lower end of the corresponding side surface of the vertical joist After the collision, the vertical joist is displaced along the inclined surface to the side opposite to the platform swing side (direction in which the platform center line matches the vehicle center line), and the platform tilt angle and tilt frame tilt angle When the left and right guide members become the same, the lower ends of the inclined surfaces of the left and right guide members come into contact with (or close to) the respective sliding side surfaces of the vertical joists, so that the center line of the loading platform matches the center line of the vehicle. .

  Therefore, in the vehicle transport vehicle equipped with the load carrier alignment device according to claim 1, even when the rear side of the load carrier is retracted from the left and right with respect to the vehicle, the load carrier is automatically displaced to a normal posture (alignment). It is possible to store it while it is possible to eliminate the interference of the mechanism part (for example, each vertical joist) on the loading platform side with the mechanism part (for example, an inclined frame or a guide rail) on the vehicle side. There is an effect that it can be stored in a normal position on the vehicle.

[Effect of the invention of claim 2 of the present application]
The load carrier aligning device of the invention of claim 2 of the present application uses a rotating roller that rolls when sliding on the side surface of the bottom frame (vertical joist) as each guide member in claim 1 described above.

  As described above, when a rotating roller is used for each guide member, the guide member rolls when the inclined surface of the guide member comes into sliding contact with the vertical joist side surface.

  Therefore, in addition to the effect of the first aspect, in the load carrier aligning device according to the second aspect, the frictional resistance when the guide member slides in contact with the vertical joist side surface becomes extremely small. Smooth sliding contact with each other, and the progress of wear of the sliding contact portion is extremely slow (durability is improved).

It is a side view of the loading platform storage state in the vehicle transport vehicle which employ | adopted the loading platform alignment apparatus of 1st Example of this application. FIG. 2 is a partially enlarged plan view of the vehicle transport vehicle of FIG. 1. It is an exploded view of the vehicle transport vehicle of FIG. It is a partial perspective view in the decomposition | disassembly state of FIG. It is VV expanded sectional drawing of FIG. FIG. 2 is an enlarged side view of the vicinity of a loading platform alignment device used in the vehicle transport vehicle of FIG. 1. FIG. 7 is a plan view of FIG. 6. FIG. 2 is a side view of the vehicle carrier normal inclination angle state in the vehicle transport vehicle of FIG. 1. FIG. 9 is a state change diagram from FIG. 8 (first transition process diagram to a load bed gentle inclination angle state). FIG. 10 is a state change diagram from FIG. 9 (second transition process diagram to a load bed gentle inclination angle state). FIG. 2 is a side view of the vehicle carrier in FIG. FIG. 7 is a right side view of FIG. 6 (a view of the load carrier alignment device portion seen from the rear). FIG. 13 is a view corresponding to FIG. 12 of the load carrier alignment device portion in the load carrier gentle inclination angle state of FIG. 11. It is a state change figure at the time of the loading platform storing operation from FIG. FIG. 13 is a view corresponding to FIG. FIG. 13 is a view corresponding to FIG. FIG. 13 is a view corresponding to FIG. It is a side view of the vehicle carrier of a well-known example. It is an exploded view of the vehicle transport vehicle of FIG. FIG. 19 is a side view of the vehicle carrier normal inclination angle state in the vehicle transport vehicle of FIG. 18. FIG. 19 is a side view of the vehicle carrier of FIG. It is explanatory drawing when a loading platform shakes to the inclination lower side of the ground in the top view of the vehicle transport vehicle of FIG.

  Hereinafter, the loading platform alignment device of the vehicle transport vehicle according to the present embodiment will be described with reference to FIGS. 1 to 17. FIGS. 1 to 14 show the vehicle transport vehicle provided with the loading platform alignment device according to the first embodiment of the present application. FIGS. 15 to 17 show modified examples (second embodiment to fourth embodiment) of the loading platform aligning device in the vehicle transport vehicle of FIGS. 1 to 14, respectively.

  The outline of the function of the loading platform aligning device of each embodiment of the present application (first embodiment to fourth embodiment) is shown in FIG. 22 (known example) with the loading platform 4 protruding rearward as shown in FIGS. When the center line M of the loading platform 4 has an angle with respect to the center line L of the vehicle 1 as shown in FIG. 5, when the loading platform 4 is retracted from the angle, the center of the loading platform 4 is centered. This is for automatically matching the line M with the center line L of the vehicle 1.

  The details of the loading platform alignment apparatus of each embodiment will be described later. First, the configuration of a vehicle transport vehicle that employs the loading platform alignment apparatus will be described. The basic configuration of the vehicle transporter used in this embodiment is substantially the same as that of the known example shown in FIGS. 18 and 19 except for the support leg 9, and overlaps with the description of the known example. However, the configuration of the vehicle transporter of the present embodiment will be described in more detail.

  As shown in FIGS. 1 to 5, the vehicle transport vehicle of this embodiment is fixed to a vehicle 1 having a pair of left and right chassis frames 11, 11 and subframes 12, 12 on each chassis frame 11, 11. A pair of left and right inclined frames 3, 3 supported at the rear end portions of the guide rails 2, 2 and sub-frames 12, 12, respectively, and supported on the respective inclined frames 3, 3 so as to be movable in the longitudinal direction of the vehicle. A loading platform 4 and a telescopic cylinder 51 for moving the loading platform 4 in the vehicle front-rear direction with respect to the inclined frames 3 and 3, and the tilting frames 3 and 3 together with the loading platform 4 by the expansion and contraction movement of the telescopic cylinder 51. , 2 and a tilting device 5 for tilting with respect to 2.

  In the following description, the front or front is the front side of the vehicle 1, the rear or rear is the rear side of the vehicle 1, and the left and right are when the vehicle 1 is viewed from the rear side. The left or right side of

  In the vehicle transport vehicle of this embodiment, subframes 12 and 12 are fixed on left and right chassis frames 11 and 11, respectively. The rear ends of the subframes 12 and 12 are connected by a connecting portion 13. On the upper surfaces of the sub-frames 12, 12, sliding contact plates 14 for sliding vertical joists 42, 42, which will be described later, at a plurality of positions spaced at appropriate intervals in the sub-frame length direction, 14 are attached (see FIGS. 2 and 4). In another embodiment, the chassis without the sub-frame 12 on the chassis frame 11 can be used. In this case, the sliding contact plates 14, 14,... May be mounted on the chassis frames 11, 11.

  Each of the left and right guide rails 2 and 2 uses a U-shaped frame material having a predetermined length. The guide rails 2 and 2 are fixed to the left and right sub-frames 12 and 12 in a state in which the guide rails 2 and 2 are directed in the vehicle longitudinal direction. When the subframes 12 and 12 are not used, the guide rails 2 and 2 are directly attached to the chassis frames 11 and 11.

  The shape (guide rail) of each of the guide rails 2 and 2 is set so that the tilted frames 3 and 3 can be tilted smoothly (substantially at a constant speed) when the telescopic cylinder 51 is expanded and contracted. Specifically, each of the guide rails 2 and 2 includes an upward inclined portion 21 inclined upward toward the front portion, a horizontal portion 22 at the intermediate portion, and a downward inclined portion 23 inclined downward toward the rear portion. It is formed continuously. Each guide rail 2, 2 is formed with an inward guide groove 24 over its entire length. In other embodiments, the guide grooves formed in the guide rails 2 and 2 may be outward guide grooves.

  Each of the inclined frames 3 and 3 is made of a long H-shaped steel (which may be a member having a structure in which a U-shaped material is joined back to back). Each of the inclined frames 3 and 3 has a length that is considerably longer than the entire length of the chassis frame 11. An inward guide groove 31 and an outward guide groove 32 are formed on the left and right sides of each of the inclined frames 3 and 3 over the entire length. The inclined frames 3 and 3 are connected by a connecting member 33 (FIGS. 3, 4, 7, and 12) in the vicinity of the rear end portion in the length direction.

  Further, another horizontal member 34 (FIGS. 3, 4, 7, and 12) is attached to the lower surface slightly in front of the rear ends of the both inclined frames 3 and 3 in the left-right direction. Both end portions of the horizontal member 34 protrude slightly outward from the outer surfaces of the inclined frames 3 and 3, respectively. And the rollers 37 and 37 with the collar 37a are attached to the both ends of the horizontal member 34, respectively. The flanges 37a and 37a of the rollers 37 and 37 are provided at the inner ends of the rollers, respectively.

  As shown in FIGS. 7 and 12, the rollers 37 and 37 with the flange 37 a receive the vertical joists 42 and 42 of the loading platform 4 from below when the loading platform 4 is in a parallel posture with respect to the inclined frame 3. Is. When the loading platform 4 is in a parallel posture with respect to the inclined frame 3, the loading platform 4 is supported from below by the rollers 37, 37, and the vertical joists 37a, 37a of the rollers 37, 37 respectively Each of the guides 42 is guided from the inner surface side.

  In this way, when the loading platform 4 (respective vertical joists 42 and 42) is supported and guided by the rollers 37 and 37 with the flange 37a provided on the inclined frame 3 side, the loading platform 4 is attached to the inclined frame 3. On the other hand, when moving back and forth in a parallel posture, the loading platform 4 is not displaced from side to side with respect to the inclined frame 3.

  Downward supporting legs 9 are attached to the rear ends of the inclined frames 3 and 3, respectively. The details of the support leg 9 will be described later.

  Each inclined frame 3, 3 is disposed at a position spaced from the center line L (FIG. 12) of the left and right width of the vehicle 1 by a predetermined equal interval from side to side. Therefore, the center line between the two inclined frames 3 and 3 coincides with the center line L of the vehicle 1 (FIG. 12).

  Each of the inclined frames 3 and 3 supports a position slightly rearward from the central portion in the length direction on the rear connecting portion 13 of the sub frames 12 and 12 (support portion 8) so as to be tiltable. In this embodiment, the support portion 8 includes brackets 82, 82 provided on the lower surfaces of the inclined frames 3, 3, on the support shafts 83, respectively, on the brackets 81, 81 provided on the rear connection portion 13 of the subframe 12. It is pivotally attached. Each of the inclined frames 3 and 3 is centered on the retracted posture that is in a horizontal state on the chassis frames 11 and 11 (subframe 12) as shown in FIG. 1 and the support portion 8 as shown in FIGS. Thus, the support leg 9 can be tilted between the tilted posture and the grounding posture.

  The loading platform 4 has two left and right bottom frames 42, 42 on the lower surface of the vehicle mounting platform 41. The bottom frames 42 and 42 are the names expressed in the claims, but the bottom frame is generally referred to as a vertical joist. In the following description, the bottom frame is referred to as a vertical joist. .

  The vertical joists 42 and 42 are arranged at predetermined left and right intervals from the center line M (FIG. 12) of the left and right width of the vehicle platform 41. The interval between both vertical joists 42, 42 is set to be considerably wider than the interval between the both inclined frames 3, 3.

  Grounding rollers 43 are attached to the lower surface of the rear end portion of the vehicle mounting base 41 at positions closer to the left and right outer ends, respectively. Further, a turn plate 44 is attached to the rear end portion of the loading platform 4 so as to be raised and lowered. The loading platform 4 can be moved in the vehicle front-rear direction with respect to the inclined frames 3 and 3 via a moving body 6 described later.

  As shown in FIG. 12, a slite plate 42 b is attached to the inner side surface of each vertical joist 42, 42 so that a rotating roller 102 of a guide member 100 described later is in sliding contact with the vertical joists 42, 42. A slite plate 42c that is in sliding contact with the upper surface of the subframe 12 is attached to the lower surface of the subframe 12.

  A pair of left and right receiving rollers 38 and 38 for receiving the left and right vertical joists 42 and 42 of the loading platform 4 are attached to the rear end portions (the brackets 81 and 81 portions) of the subframes 12 and 12, respectively. Each of the receiving rollers 38, 38 has the left and right vertical joists 42, 42 of the loading platform 4 on the bottom surface in a range from the loading platform storage state shown in FIG. 1 to the loading platform rear end portion (roller 43) shown in FIG. Supporting from the side, the loading platform 4 is moved in a stable state. In addition, while the loading platform 4 and the inclined frame 3 are in the parallel posture, the vertical joists 42 and 42 are supported from the lower surface side by the receiving rollers 38 and 38 and the rollers 37 and 37 with the flanges 37a. It is like that.

The tilting device 5 is attached to the guide rail 2, one telescopic cylinder 51, and the tube 52 of the telescopic cylinder 51 and moves along the inward guide grooves 24 and 24 of the guide rails 2 and 2. Each roller 55, 55 and each roller 59, 59 described later are configured. In this embodiment, the rollers 59 and 59 described later are included in one of the constituent elements as the tilting device 5, but in other embodiments, the rollers 59 and 59 may not be used. The rollers 59 are removed from the components of the tilting device 5.
As shown in FIGS. 2 and 4, the tube 52 of the telescopic cylinder 51 is provided with a shaft that protrudes left and right outwards at the front end portion and the rear end portion, and a pair of left and right is provided at the tip portion of each shaft. Two sets of front and rear rollers (front rollers 57, 57 and rear rollers 58, 58) are provided. In other embodiments, the rollers 57 and 58 may be replaced with sliders (or slide plates). The telescopic cylinder 51 has a bracket 36 (see FIGS. 2 and 4) in which the tip of the cylinder rod 53 is provided at the front end of each of the inclined frames 3 and 3 with the cylinder rod 53 facing the front side. ) With a support shaft 35 (see FIG. 2), and two sets of front and rear rollers 57, 57, 58, 58 provided at front and rear ends of the cylinder tube 52 are respectively connected to the left and right inclined frames 3, 3. It is attached so as to roll along the inward guide grooves 31, 31. Accordingly, when the telescopic cylinder 51 is expanded and contracted, the cylinder tube 52 side moves with respect to the inclined frame 3, and the front and rear, left and right (total four) rollers 57, 57, 58, 58 are respectively connected to the inclined frames 3, 3 respectively. Therefore, the telescopic cylinder 51 extends and contracts while maintaining a parallel posture with respect to the inclined frame 3 in a side view.

  A pair of left and right rollers 55 and 55 that are a part of the tilting device 5 are attached to the lower end portions of the short downward arms 54 and 54 at positions close to the front portion of the cylinder tube 52 in an outward state, respectively. The rails 2 and 2 are fitted into the inward guide grooves 24 and 24. When the telescopic cylinder 51 expands and contracts, the rollers 55 and 55 move back and forth along the inward guide grooves 24 and 24 of the guide rails 2 and 2, respectively. 3 and 3 are tilted about the support portion 8.

  By the way, the inclination angle of the downward inclined portion 23 of the guide rail 2 is set so that the inclined frame 3 maintains a substantially constant inclination posture when the roller 55 moves in the range of the downward inclined portion 23. That is, from the time when the roller 55 reaches the starting end of the descending inclined portion 23 as shown in FIG. 10 until the roller 55 reaches the vicinity of the end portion of the descending inclined portion 23 as shown in FIG. The tilting operation is not made to work.

  Also, rollers 59, 59 are attached to the outer surfaces of the downward arms 54, 54 as shown in FIGS. The rollers 59 and 59 are fitted into the inward guide grooves 31 and 31 of the left and right inclined frames 3 and 3, similarly to the rollers 57 and 58 attached to the front and rear of the cylinder tube 52. In the above embodiment, one roller 59, 59 is fitted in each guide groove 31, 31, but two rollers 59 are arranged in front of and behind each arm 54, 54, respectively. The individual rollers 59 may be fitted into the respective guide grooves 31, 31. In this case, the arms 54 and 54 are guided in a more stable state, and the arms 54 and 54 are maintained in a stable state even when a large load is applied to the arms 54 and 54. be able to. In addition, when attaching the roller of the code | symbol 59 to each arm 54 and 54 (it may be one each at the front and back, or two each), you may abbreviate | omit each front roller shown by the code | symbol 57.

  The loading platform 4 is installed on each of the inclined frames 3 and 3 so that the double speed device A can move back and forth by an amount twice as large as the expansion / contraction amount of the expansion / contraction cylinder 51. This double speed device A is configured to have a moving body 6 and left and right chains 7,7.

  The moving body 6 connects the left and right frames 61, 61 with a connecting plate 62, and has two rollers 63, 63,. The rollers 63, 63... On the left and right sides of the moving body 6 are fitted in the outward guide grooves 32, 32 of the inclined frames 3, 3, respectively, so that the moving body 6 extends along the inclined frames 3, 3. Can move back and forth. The moving body 6 moves back and forth while maintaining a parallel posture with respect to the inclined frames 3 and 3 in a side view.

  Each of the left and right chains 7, 7 has a first divided chain 71 and a second divided chain 72 that are divided into two as shown in FIGS. In other embodiments, the chain 7 may be a single endless one. In another embodiment, a wire may be used in place of the chain 7.

  In this embodiment, the respective chains 7 and 7 are attached as follows. First, at the front end portion and the rear end portion of the tube 52 of the telescopic cylinder 51, chain pulleys (total of four) 56, 56,. In this embodiment, the pulleys 56, 56,... Are coaxially installed inside the two front and rear rollers 57, 57, 58, 58, respectively. As shown in FIGS. 3 and 4, each first divided chain 71, 71 is wound around each rear pulley 56, 56 and is connected to the front end of each first divided chain 71, 71. While fixing the portion to the connecting plate 62 of the moving body 6, the rear end portions of the first divided chains 71, 71 are fixed to the inclined frames 3, 3. Each of the other second divided chains 72 and 72 is fixed to the connecting plate 62 of the moving body 6 with the front end of each of the second divided chains 72 and 72 being wound around the front pulleys 56 and 56. On the other hand, rear end portions of the second divided chains 72 and 72 are fixed to the inclined frames 3 and 3.

  The loading platform 4 is pivotally attached to the moving body 6 at one point by a support shaft (two left and right on the same axis) 64 at a position near the front end of the loading platform. That is, in FIGS. 3 and 4, the shaft holes 64a formed in the left and right frames 61 and 61 of the movable body 6 and the shaft holes 64b formed near the front end portions of the left and right vertical joists 42 and 42 of the loading platform 4, respectively. By inserting the shaft 64 (see FIGS. 1, 2, and 5), the loading platform 4 is pivotally attached to the moving body 6 at one point in a side view.

  When the expansion / contraction cylinder 51 expands / contracts, the double speed device A causes the movable body 6 to adjust the expansion / contraction amount of the expansion / contraction cylinder 51 by the front and rear pulleys 56 and 56 and the chain 7 (first divided chain 71 and second divided chain 72). The carriage 4 is moved back and forth by a length twice as long, so that the loading platform 4 is also moved back and forth by the length of twice the expansion / contraction amount of the telescopic cylinder 51 together with the moving body 6.

  One support leg 9 is installed at each rear end of each of the left and right inclined frames 3, 3. The left and right support legs 9, 9 are connected by a connecting member 94 (FIG. 7) so that the support legs 9, 9 swing back and forth simultaneously. Since the left and right support legs 9, 9 have the same shape, the following description will be made with the left support leg 9 as viewed from the rear side of the vehicle.

  As shown in an enlarged view in FIG. 6, the support leg 9 has an inverted L having a lateral arm 90a facing forward and backward on the upper side and a downward leg 90b extending downward from the front end of the lateral arm 90a. A shape member 90 is used. The support leg 9 is mounted so that the rear end of the lateral arm 90a is pivotally attached to the lower surface of the rear end of the inclined frame 3 by the support shaft 91, and the downward leg 90b can swing back and forth. ing. The rear end portion (pivoting portion) of the lateral arm 90a is pivotally attached to the bracket 39 attached to the lower surface of the connecting portion 33 that connects the rear end portions of the left and right inclined frames 3, 3. doing.

  A loading platform receiving roller 92 is provided at the corner between the lateral arm 90 a and the downward leg 90 b in the inverted L-shaped member 90. The loading platform receiving roller 92 receives (loads) the vertical joists 42 of the loading platform 4, and when the vertical loading joists 42 are placed on the loading platform receiving rollers 92, as described later, the front of the support legs 9. Side swing is prohibited.

  A grounding roller 93 is provided at the lower end portion of the downward leg portion 90 b of the inverted L-shaped member 90. The grounding roller 93 rolls in a state where it is in contact with the ground, and makes the support leg 9 smoothly swing back and forth.

The length of the support leg 9 from the upper end of the loading platform receiving roller 92 to the lower end of the grounding roller 93 is not particularly limited, but about 50 cm is appropriate.

At the downward leg portion 90b of the support leg 9, as described later (FIGS. 10 and 11), when the inclined frame 3 is tilted back to the maximum and the downward leg portion 90b of the support leg 9 swings forward to the maximum side, A stopper 15 ( FIG. 6 ) is attached to abut against the lower surface of the inclined frame 3 to prevent the support leg 9 from swinging further forward. In this embodiment, the stopper 15 is provided on the support leg 9 side. However, in other embodiments, the stopper 15 is provided on the inclined frame 3 side, and the inclined frame 3 is tilted to the maximum rearward position. (The downward leg portion 90b of the support leg 9 also swings to the maximum), and the stopper 15 on the inclined frame 3 side may abut against the support leg 9 (downward leg portion 90b).

  A rear bumper 16 is attached to the support leg 9. The support leg 9 is stored in a state where it is swung forward by the support leg storage device 10 in the loading platform storage state.

  The configurations and functions of the rear bumper 16 and the support leg storage device 10 are described in detail in Japanese Patent Application No. 2008-243831 already proposed by the present applicant, but are not directly related to the load carrier alignment device of the present application. Therefore, detailed descriptions of the rear bumper 16 and the support leg storage device 10 are omitted. As a premise to make the support leg storage device 10 function, the support leg 9 needs to be able to swing forward when the loading platform 4 is in the storage position. For this purpose, the loading platform of the support leg 9 in the loading platform storage state is required. As shown in FIG. 6 (and FIGS. 1 and 3), an upward concave portion (stepped portion) 42 a is provided on the lower surface of the vertical joist 42 of the loading platform at a position corresponding to the receiving roller 92.

  Next, a basic operation method of the vehicle carrier used in this embodiment will be described.

  1, the telescopic cylinder 51 is fully contracted, the roller 55 of the downward arm 54 is in a position closer to the front of the guide rail 2 (in front of the upward inclined portion 21), and the inclined frame 3 is horizontal. It is in a posture, and the loading platform 4 also maintains a horizontal posture at the foremost position. When the loading platform 4 is in the retracted posture, the position of the loading platform near the front end of the vertical joists 42, 42 is supported by the movable body 6 by the support shaft 64, while the loading platform 4 is placed on the upper surface of each subframe 12, 12. The undersides of the vertical joists 42, 42 are slidably mounted.

  In order to operate the loading platform 4 to the vehicle loading posture, the telescopic cylinder 51 is extended. Then, when the cylinder tube 52 moves rearward and the rollers (a pair of left and right) 55 attached to the downward arm 54 move to the horizontal portion 22 through the upward inclined portion 21 of the guide rail 2, as shown in FIG. The tilting frame 3 is tilted backward until the support leg 9 (described later) comes into contact with the ground, and the loading platform 4 is moved backward by the double length of the extension of the telescopic cylinder by the double speed device A so that the grounding roller 43 at the rear end of the loading platform is moved. Ground to the ground.

  The loading platform 4 maintains a parallel posture with respect to the inclined frame 3 until the grounding roller 43 at the rear end of the loading platform shown in FIG. Further, after the time when the loading platform 4 moves backward by a predetermined length with respect to the inclined frame 3 (until the state of FIG. 8), the lower surface of the vertical joist 42 of the loading platform collides with the loading platform receiving roller 92 of the support leg 9. In addition, the downward leg portion 90b of the support leg 9 is maintained in a posture in which the support leg 9 is directed downward with respect to the inclined frame 3 in an angle of approximately 90 °. In other words, the load receiving roller 92 of the support leg 9 is restricted from moving up by the vertical joist 42 of the load bed, and the support leg 9 is prohibited from swinging forward about the support shaft 91. . Therefore, at the time of FIG. 8 (the loading platform 4 is parallel to the inclined frame 3), the supporting height of the rear end portion of the inclined frame by the supporting leg 9 is high while the posture of the supporting leg 9 is stable. . At the time of FIG. 8, since the ground angle of the inclined frame 3 is about 10 °, the downward leg portion 90b of the support leg 9 also swings forward by an angle of about 10 ° from the vertical posture. At this time, the support height of the rear end portion of the inclined frame by the support leg 9 is a “high support state” which is much shorter than the length of the support leg 9 (for example, 50 cm). Thereafter, when the landing plate 44 is laid down and brought into contact with the ground, the general vehicle S can be loaded (the platform-to-ground angle is about 10 °).

  In order to further tilt the loading platform 4 from the state shown in FIG. 8, the telescopic cylinder 51 is further extended. Then, the loading platform 4 further moves rearward while the grounding roller 43 of the loading platform 4 is grounded, and the inclination angle of the loading platform 4 becomes smaller than the inclination angle of the inclined frame 3 as shown in FIG. Since the frame 3 (substantially the movable body 6) can be tilted around a point (the position of the support shaft 64) at the front end of the loading platform, the loading platform 4 can be tilted with respect to the tilting frame 3 without any problem. Can be made. Further, when the inclination angle of the loading platform 4 becomes smaller than the inclination angle of the inclined frame 3, the restriction of the pressure of the supporting leg 9 against the loading platform receiving roller 92 is released, and the supporting leg 9 can swing forward about the support shaft 91. Become. When the inclination angle of the loading platform 4 is smaller than the inclination angle of the inclined frame 3, the lower surface of each vertical joist 42 of the loading platform 4 is separated upward from the upper surface of the rear end of each subframe 12 and each roller 37 with hooks, The loading platform 4 is supported only at one point of the moving body 6 at the front of the loading platform with respect to the vehicle side. Therefore, in this state, as will be described later, the rear side of the loading platform 4 is likely to swing left and right.

  Then, as shown in FIG. 10, when the roller 55 of the downward arm 54 reaches the start end position of the downward inclined portion 23 of the guide rail 2, the inclined frame 3 is further inclined backward (the support leg 9 is then moved forward). The tilting frame 3 is allowed to swing further, and the tilting angle of the tilting frame 3 is maximized. Further, when the inclined frame 3 is tilted to the maximum rear, the stopper 15 attached to the support leg 9 side collides with the lower surface of the inclined frame 3, and the support leg 9 is prohibited from further swinging forward. doing. Accordingly, the support leg 9 supports the rear end portion of the inclined frame while maintaining a stable posture.

  Thereafter, when the loading platform 4 further moves rearward, and the front end of the loading platform reaches the vicinity of the rear end of the inclined frame 3, as shown in FIG. Complete. During the period from the state of FIG. 10 to FIG. 11, the roller 55 of the downward arm 54 moves on the downward inclined portion 23 of the guide rail 2, so the inclined frame 3 is maintained at the maximum inclination angle.

  In the state of FIG. 11, the support leg 9 swings greatly forward, and the support height of the rear end portion of the inclined frame by the support leg 9 is very low (becomes a “low support state”). Incidentally, in the maximum rearward tilt state of the inclined frame 3, the ground angle of the downward leg 90b is about 25 °, but the substantial ground angle of the line connecting the ground point of the ground roller 93 and the support shaft 91 is about 10 °. °. Therefore, the front part of the loading platform 4 is lowered to a very low position, the loading platform 4 is lowered to a substantially horizontal position near the ground, and the loading platform 4 has a very gentle inclination angle (for example, about 2 to 3 °). stable. In the state of gentle inclination of the loading platform shown in FIG. 11, a general vehicle is naturally used, but even a low vehicle can be loaded without any problem.

  In order to store the loading platform 4 from the vehicle loading state, the telescopic cylinder 51 can be retracted to store in the reverse order to the vehicle loading operation.

  As described above, in the vehicle transport vehicle of this embodiment, the support leg 9 is attached to the rear end portion of the inclined frame 3 so as to freely swing back and forth, while the front leg swing angle of the downward leg 90b is increased by the back and forth movement of the loading platform 4. By automatically changing, the support leg 9 can be used in the two support states of the “high support state” (FIG. 8) and the “low support state” (FIGS. 10 and 11).

  In the vehicle transport vehicle of this embodiment, the loading platform 4 is tilted between the normal tilt angle (the “high support state” of the support leg 9) and the gentle tilt angle (the “low support state” of the support leg 9). Even in the state (for example, the state shown in FIGS. 9 and 10), the vehicle can be loaded and unloaded.

  In addition, the vehicle carrier used by this application can be changed from the thing of the said Example as follows.

  First, in the above-described embodiment, the tilting frame 3 and the back and forth movement of the loading platform 4 can be simultaneously performed by a single telescopic cylinder 51. However, in a large vehicle that requires a large output and space is allowed, Two or more cylinders 51 may be arranged in parallel.

  In the vehicle transport vehicle of the above embodiment, the tilting frame 3 and the loading platform 4 are moved back and forth by one telescopic cylinder 51. However, the tilting frame 3 and the loading platform 4 are moved back and forth. May be performed by separate telescopic cylinders.

  By the way, in this vehicle transport vehicle, as explained in the above section of the background art, if the ground on which the vehicle 1 is stopped is horizontal in the left-right direction, the rear side of the loading platform will swing left and right during the overhanging operation of the loading platform 4. However, when the loading platform 4 is extended while the vehicle 1 is stopped on the ground which is greatly inclined to the left and right, after the swinging element to the downward inclination side due to the loading platform weight or the grounding roller 43 is grounded, The rear side of the loading platform 4 is subjected to the action of swinging toward the downward slope side of the ground as indicated by reference numeral 4 'in FIG.

  When the loading platform 4 'is to be stored on the vehicle 1 while the loading platform overhangs while the loading platform rear side swings downward, the loading platform mechanism (for example, each vertical joist 42) is moved to the vehicle mechanism (for example, the vertical joist 42). There is a problem that the interference part may be deformed or damaged due to interference with the inclined frame 3 or the guide rail 2), and the problem that the loading platform is displaced with respect to the vehicle when the loading platform is stored. There is.

  Therefore, in the vehicle transport vehicle used in the embodiment of the present application, the center line M of the loading platform 4 is changed to the center line L of the vehicle 1 during the loading platform storage operation even when the rear side of the loading platform is swung left and right in the loading platform extension state. It is equipped with a loading platform aligning device that can automatically adjust to match.

  1 to 14 (particularly FIGS. 6, 7, and 12 to 14), the loading platform aligning device of the first embodiment has two vertical contacts that are in contact with the lower surface of the loading platform 4 in the front-rear direction. A joist (which is a bottom frame in the claims) 42 and 42, and two guide members 100 and 100 attached at appropriate positions near the rear ends of the inclined frames 3 and 3, respectively.

  In the first embodiment, the guide members 100 and 100 are attached to the rear ends of the inclined frames 3 and 3 as shown in FIGS. 6 and 7, but the attachment positions of the guide members 100 and 100 are as follows. May be slightly in front of the rear end of the inclined frame as long as it is closer to the rear end of the inclined frames 3 and 3.

  As shown in FIGS. 6, 7, and 12, the guide members 100, 100 of the load carrier alignment apparatus of the first embodiment include brackets 101, attached to the outer surfaces of the rear ends of the inclined frames 3, 3. A rotating roller 102, 102 is held on a 101, respectively. The rotating rollers 102 and 102 are positioned outside the outer surfaces of the left and right inclined frames 3 and 3, respectively, and are attached so as to be in sliding contact with the inner surfaces of the left and right vertical joists 42 and 42, respectively.

  Slit plates 42b and 42b having a small frictional resistance at the time of sliding contact are attached to the inner side surfaces of the vertical joists 42 and 42, respectively. In the following description, the slite plates 42b and 42b are attached to the vertical joists 42. , 42 may be referred to as the inner surface.

  The rotating roller 102 of the guide member 100 used in the first embodiment is a straight cylinder, and the upper position and the lower position of the cylindrical portion are respectively inclined in a tapered shape. Each of the rotating rollers 102 and 102 is attached in a state where the roller axis is inclined upward at a predetermined angle (for example, an angle of about 60 ° with respect to the horizontal plane) as shown in FIG. That is, in the mounted state of each rotary roller 102, 102, the upper side of the outer surface of the rotary roller 102 is separated from the vertical joist inner side surface 42b, and the lower side of the outer surface of the rotary roller 102 is the vertical joist inner side surface 42b. The inclined surfaces a, which are inclined so as to approach (or come into contact with each other) and have a predetermined angle (for example, an angle of about 60 ° with respect to the horizontal plane) It is a. Accordingly, the interval between the upper outer surfaces of the rotating rollers 102, 102 is smaller than the inner surface interval of the left and right vertical joists 42, 42, and between the lower outer surfaces (maximum protruding portions) of the rotating rollers 102, 102. The interval is substantially the same as the inner surface interval of the left and right vertical joists 42, 42 (very small).

  The load carrier alignment apparatus of the first embodiment functions as follows.

  First, in the loading platform storage state shown in FIG. 1 (the loading platform 4 and the inclined frame 3 are parallel to each other in a side view), as illustrated in FIG. The outer surfaces on the lower end side of 102 and 102 are joined (or close) to the inner surfaces 42b and 42b of the vertical joists 42 and 42, respectively. In the range in which the loading platform 4 moves back and forth in a posture that is parallel to the inclined frame 3 in a side view (range from FIG. 1 to FIG. 8), the left and right rotating rollers 102 and 102 are respectively connected to the vertical joist inner side surfaces 42 b and 42 b. The moving direction of the loading platform 4 is guided in the same direction as the center line L of the vehicle 1. Therefore, in the range in which the loading platform 4 moves back and forth while maintaining a parallel posture in plan view with respect to the inclined frame 3, the rear side of the loading platform 4 is lowered even if the stopping ground of the vehicle 1 is greatly inclined to the left and right. There is no swing to the inclined side. Further, in the range in which the loading platform 4 moves back and forth while maintaining a parallel posture with respect to the inclined frame 3, as shown in FIG. 12, the hooks 37a and 37a of the hooked rollers 37 and 37 have vertical portions. Since it exists in the position close | similar to the inner surface of the joists 42 and 42, it can be prevented that the back side of the loading platform 4 swings to the downward inclination side also by these roller 37 and 37 with a hook.

  Further, when each of the rotating rollers 102 and 102 is in sliding contact with the vertical joist inner side surface 42b during the back-and-forth movement of the loading platform 4, the rotating roller that is in sliding contact with the vertical joist inner side surface 42b rolls. Friction force due to contact is hardly generated (the rotating roller 102 and the vertical joist inner side surface 42b are not easily worn).

  On the other hand, when the loading platform 4 moves rearward until the tilt angle of the loading platform 4 becomes smaller than the tilt angle of the tilting frame 3 as shown in FIGS. 9 to 11, as shown in FIG. Each hooked roller 37, 37) is separated below the vertical joists 42, 42, and the function of guiding the loading platform 4 (the function of preventing left-right shaking) by the rotating roller 102 (and the hooked roller 37) is lost. At this time, if the stopping ground of the vehicle 1 is greatly inclined to the left and right, the loading platform 4 is supported by the vehicle 1 at only one point of the moving body 6 at the leading end of the loading platform. As a result, the rear side of the loading platform 4 may swing to the downward slope side of the ground (for example, the state indicated by reference numeral 4 'in FIG. 22). In this case, as shown in FIG. 13, the center line M of the loading platform 4 is shifted downward (left side in FIG. 13) from the center line L of the vehicle 1. In the case of FIG. 13, a part of the inclined surface “a” of the right rotation roller 102 protrudes from directly below the inner side surface 42 b of the right vertical joist 42.

  Then, when the loading platform 4 is retracted from the state in which the rear side of the loading platform 4 is swung to the downward inclination side (the expansion cylinder 51 is reduced), the loading platform 4 moves forward with respect to the tilting frame 3, When the tilt angle of the loading platform 4 approaches the tilt angle of the tilting frame 3 (for example, the state shown in FIG. 9), the tilting of the rotating roller 102 on the opposite side (right side) to the side swung on the rear side as shown in FIG. The surface a collides with the lower end of the vertical joist inner side surface 42b. Thereafter, when the loading platform 4 continuously moves backward, the loading platform 4 (vertical joists 42 and 42) descends sequentially while moving forward at the portion where the rotation roller 102 is located, and the inclined surface a of the rotation roller 102 at that time The vertical joist 42 part that abuts on the outer side is displaced to the outside (right side) along the inclined surface a (the swing angle of the cargo bed becomes smaller with the moving body 6 part at the front end of the cargo bed as a fulcrum). . When the loading platform 4 is parallel to the inclined frame 3 in a side view (for example, the state shown in FIG. 8), the inclined surfaces a and a of the left and right rotating rollers 102 and 102 are respectively shown in FIG. The lower end portion abuts (or is close to) the inner side surfaces 42 b and 42 b of the left and right vertical joists 42 and 42, and the center line M of the loading platform 4 coincides with the center line L of the vehicle 1 at this time. . Thereafter, the loading platform 4 is moved forward to the final storage position on the vehicle 1 in this state, but during that time, the center line M of the loading platform 4 moves forward with the center line L matching the vehicle 1. The side mechanism portion (for example, each vertical joist 42) does not interfere with the mechanism portion (for example, the inclined frame 3 or the guide rail 2) on the vehicle 1 side.

  Thus, in the vehicle transport vehicle using the loading platform alignment apparatus of the first embodiment, the loading platform 4 is moved by the guide members 100, 100 when the loading operation is performed from the state where the loading platform rear side is swung left and right in the loading platform extension state. It can be automatically aligned to a normal posture (a posture in which the carrier center line M matches the vehicle center line L). Further, when the rotation roller 102 is used for each guide member 100, 100, the rotation roller 102 rolls when it comes into sliding contact with the longitudinal joist inner side surface 42b (since little frictional force is generated). The vertical joist inner side surface 42b is not easily worn.

  Each of the loading platform alignment apparatuses of the second to fourth embodiments shown in FIGS. 15 to 17 is a modification of the loading platform alignment apparatus of FIG. 12 (first embodiment).

  In the load carrier alignment device of the second embodiment shown in FIG. 15, another vertical joist 42 is attached along the load carrier center line M on the lower surface of the load carrier 4, while at the rear end portions of the inclined frames 3 and 3, Guide members 100 and 100 are attached inward (toward the center of the loading platform).

  Each guide member 100, 100 is formed by attaching a straight cylindrical rotating roller 102 via a bracket 101, as in the first embodiment (FIG. 12). Each of the rotating rollers 102 and 102 is installed in a state where the respective axis is inclined upward on the upper side, and the lower ends of the inner outward upward inclined surfaces a and a are located at the center of the loading platform. The vertical joists 42 are joined (or close) to the left and right outer surfaces (slite plates) 42b and 42b.

  15 (second embodiment), the loading platform 4 is stored from a state in which the rear side of the loading platform 4 is swung to the left and right (the loading platform center line M is displaced from the vehicle center line L) in the loading platform extension state. In this case, the lower end of the outer side surface 42b on the side of the vertical joist 42 at the center of the loading platform where the loading platform is swung is brought into contact with the outward upward inclined surface a of one of the rotating rollers 102, and then is brought into contact with the inclined surface a. The lower end of the vertical joist outer surface 42b is displaced toward the vehicle center line L along the inclined surface a. In the case of the second embodiment, each of the rotating rollers 102 and 102 rolls when slidably contacting the vertical joist outer surface 42a.

  Therefore, the loading platform aligning device of the second embodiment shown in FIG. 15 has the same function as that of the first embodiment (FIG. 12).

  In the load carrier alignment apparatus of the third embodiment shown in FIG. 16, the truncated cone-shaped rotating rollers 103 and 103 are used as the guide members 100 and 100 attached to the rear ends of the inclined frames 3 and 3, respectively. .

  As in the first embodiment (FIG. 12), the guide members 100, 100 of the third embodiment extend the bracket 101 outward, and the outer surface side of each of the rotating rollers 103, 103 has left and right vertical joists. The inner surfaces 42b and 42b of the surfaces 42 and 42 are in sliding contact (or close proximity).

  Each of the frustoconical rotary rollers 103 and 103 is attached to the inclined frame 3 in a non-inclined posture (vertical posture as viewed from the rear), but the outer peripheral surface is upward over the entire circumference. The side is a tapered inclined surface a.

  The load carrier alignment apparatus of the third embodiment shown in FIG. 16 has the same function as that of the first embodiment (FIG. 12).

  In the load carrier aligning device of the fourth embodiment shown in FIG. 17, as each guide member 100, 100, a slite plate 104 having a small frictional resistance (sliding easily) is used instead of the rotating roller. The load carrier alignment apparatus of the fourth embodiment corresponds only to claim 1 of the present application.

  Similarly to the first embodiment (FIG. 12), the guide members 100, 100 of the fourth embodiment also extend the bracket 101 outward so that the outer surface sides of the slite plates 104, 104 are left and right vertical joists 42, The inner surfaces 42b and 42b of the 42 are slidably contacted.

  On each outer surface of each slite plate 104, an inclined surface a that is inclined upward inward is formed.

  And the guide members 100 and 100 of this 4th Example have the alignment function of the loading platform 4 similarly to the thing of the 1st-3rd Example. Further, when the slite plate 104 is used for the guide member 100, when the slite plate 104 is in sliding contact with the vertical joist inner side surface 42b, the frictional resistance is slightly larger than that of the rotating roller, but it does not rotate at the time of sliding contact. Since it is a thing, the member of a simple structure can be used.

  1 is a vehicle (carrier vehicle), 2 is a guide rail, 3 is an inclined frame, 4 is a loading platform, 5 is a tilting device, 6 is a moving body, 11 is a chassis frame, 12 is a subframe, and 42 is a bottom frame (vertical joist) , 42b is a side surface (slite plate), 51 is a telescopic cylinder, 100 is a guide member, 102 and 103 are rotating rollers, 104 is a slate plate, a is an inclined surface, L is a vehicle center line, and M is a carrier center line. It is.

Claims (2)

A vehicle (1) having a chassis frame (11), an inclined frame (3) supported to be tiltable at a rear end position of the chassis frame (11), and a vehicle longitudinal direction on the inclined frame (3) The loading platform (4) supported movably, the telescopic cylinder (51) for moving the loading platform (4) in the vehicle longitudinal direction with respect to the tilt frame (3), and the tilt frame (3) can be tilted. In a vehicle carrier equipped with the tilting device (5) as described above,
While a bottom frame (42) facing in the front-rear direction is provided on the lower surface of the loading platform (4),
The bottom frame (42) of the loading platform (4) is positioned at two positions near the rear end of the inclined frame (3) when the loading platform (4) is in a parallel posture with respect to the inclined frame (3). ) Are slidably contacted with the two side surfaces (42b, 42b), respectively, and two guide members (100, 100) that can orient the front and rear direction of the cargo bed (4) in a parallel posture with respect to the inclined frame (3). 100), and
The portions of the guide members (100, 100) that are in sliding contact with the bottom frame side surfaces (42b, 42b) are separated from the bottom frame side surfaces (42b, 42b). Each guide member (100, 100) has an inclined surface (a) in which the lower side is close to the bottom frame side surface (42b, 42b).
A carrier platform alignment device for a vehicle transporter.   The rotating roller (102, 103) that rolls when the sliding member comes into sliding contact with the bottom frame side surface (42b, 42b) is used as each guide member (100, 100) according to claim 1. Car carrier truck loading center alignment device.

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