Loading platform lifting device and vehicle

Abstract

To provide a loading platform lifting device that is capable of restricting shaky movement of a movable sheave.SOLUTION: A loading platform lifting device comprises a guide mechanism for guiding a movable bracket in a second lateral direction. The guide mechanism comprises: first guide parts fixed to the movable bracket; and a second guide part which is fixed to a cross member and guides the first guide parts. At least one of the first guide parts and the second guide part extends in the second lateral direction.SELECTED DRAWING: Figure 10

Description

[Technical field]

[0001] The present specification relates to a platform lifting device and a vehicle. [Background technology]

[0002] Conventionally, for example, a load-receiving platform lifting device includes a pair of cylindrical pillars extending vertically, a cylindrical cross member connecting the pair of pillars, a slider that moves vertically relative to the pillars, a load-receiving platform connected to the slider, a rope connected to the slider, and a movable sheave around which the rope is wound and which is positioned inside the cross member (for example, Patent Document 1).

[0003] The load-receiving platform rises as the movable sheave moves laterally. However, if the movable sheave rattles when it moves laterally, the load-receiving platform will also rattle as it rises and falls. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Jpn. Jpn. Published No. 11606 / 1958 Summary of the Invention [Problem to be solved by the invention]

[0005] Therefore, an object of the present invention is to provide a loading platform lifting device and a vehicle that can prevent the movable sheave from moving with rattle. [Means for solving the problem]

[0006] The loading platform lifting device is A pair of cylindrical supports extending in the vertical direction; A cylindrical cross member connecting the pair of pillars; a slider disposed between the inside and outside of the support column and movable in a vertical direction relative to the support column; A load receiving platform connected to the slider; A rope connected to the slider; A moving sheave is disposed inside the cross member and around which the rope is wound; a moving bracket that rotatably supports the moving sheave around an axis in the first horizontal direction; a drive source that moves the moving bracket and the moving sheave in a second lateral direction perpendicular to the first lateral direction in order to move the slider; a guide mechanism that guides the movable bracket in the second lateral direction, The guide mechanism includes: A first guide portion fixed to the movable bracket; A second guide portion fixed to the cross member and guiding the first guide portion, At least one of the first guide portion and the second guide portion extends in the second lateral direction.

[0007] The vehicle is The loading platform lifting device; and a loading platform to which the loading platform lifting device is attached. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a perspective view of the load receiving platform lifting device according to the embodiment, showing a state in which the lifting unit is located at the use position and the load receiving platform is located at the lower end position in the load receiving posture. [Diagram 2] FIG. 2 is a perspective view of the load receiving platform lifting / lowering device according to the embodiment, illustrating a state in which the lifting unit is located at the use position and the load receiving platform is located at the upper end position in the load receiving posture. [Diagram 3] FIG. 2 is a perspective view of the load receiving platform lifting / lowering device according to the embodiment, illustrating a state in which the lifting unit is located at the use position and the load receiving platform is in the storage position; [Figure 4] FIG. 2 is a perspective view of the loading platform lifting / lowering device according to the embodiment, showing a state in which the lifting / lowering unit is located in an unused position; [Diagram 5]FIG. 2 is a perspective view of the loading platform lifting / lowering device according to the embodiment, showing a state in which the lifting / lowering unit is located at a storage position. [Figure 6] FIG. 2 is a right-side view of the load-receiving platform lifting device according to the embodiment, showing a state in which the load-receiving platform is positioned at the bottom end position in the load-receiving posture. [Figure 7] FIG. 2 is a right-side view of the load-receiving platform lifting device according to the embodiment, showing a state in which the load-receiving platform is positioned at the upper end position in the load-receiving posture. [Figure 8] FIG. 2 is a front view (viewed forward) of the load receiving platform lifting device according to the embodiment, showing a state in which the load receiving platform is positioned at the lower end position in the load receiving posture. [Figure 9] FIG. 2 is a perspective view of a main part of the loading platform lifting / lowering device according to the embodiment; [Figure 10] Enlarged view of area X in Figure 8 [Figure 11] Cross-sectional view of the main part taken along line XI-XI in FIG. [Figure 12] Rear view of the mobile unit [Figure 13] FIG. 13 is a cross-sectional view of a main part of a cross member of a load-receiving platform lifting device according to another embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] In each drawing, the dimensions of the components may be enlarged or reduced relative to the actual dimensions in order to facilitate understanding, and the dimensional ratios between the drawings may not be consistent. Note that in each drawing, some of the components may be omitted in order to facilitate understanding.

[0010] Terms including ordinal numbers such as first, second, etc. are used to describe various components, but these terms are used only for the purpose of distinguishing one component from another, and the components are not particularly limited by these terms. The number of components including ordinal numbers is not particularly limited, and may be, for example, one. In addition, the ordinal numbers used in the following specification and drawings may differ from the ordinal numbers described in the claims.

[0011] In the following description, the first direction (first horizontal direction) D1 is also called the front-rear direction D1, and the direction of the arrow in the figure is the front direction, and the direction opposite to the arrow in the figure is the rear direction. The second direction (second horizontal direction) D2 is also called the left-right direction D2, and the direction of the arrow in the figure is the left direction, and the direction opposite to the arrow in the figure is the right direction.

[0012] The third direction D3 is also called the up-down direction D3, and the direction of the arrow in each drawing is the up direction, and the direction opposite to the arrow in each drawing is the down direction. That is, each of the directions D1 to D3 is a direction seen by a person (driver) sitting in the driver's seat of the vehicle.

[0013] Hereinafter, an embodiment of the vehicle and the loading platform lifting / lowering device will be described with reference to Figures 1 to 12. Note that the following embodiment is provided as an example to aid in understanding the configuration of the vehicle and the loading platform lifting / lowering device, and is not intended to limit the configuration of the vehicle and the loading platform lifting / lowering device.

[0014] 1, the vehicle 1 may include, for example, a vehicle body 2, a loading platform 3 fixed on a vehicle body frame 2a disposed at the rear end of the vehicle body 2, and a loading platform lifting device 4 attached to the loading platform 3. The vehicle 1 is not particularly limited, and may be, for example, a loading vehicle as in this embodiment.

[0015] The loading platform 3 may include, for example, a floor 3a, a pair of side walls 3b, 3b provided on both the left and right sides of the floor 3a, and a gate 3c connected to the rear end of the floor 3a so as to be rotatable about an axis in the left-right direction D2, as in this embodiment. The loading platform 3 is open at the top in this embodiment, but is not limited to such a configuration and may be, for example, a box-like shape (specifically, a cargo box) having a ceiling and closed at the top.

[0016] The floor portion 3a has, for example, a loading platform floor surface 3d on which luggage is loaded. As a result, the space above the loading platform floor surface 3d becomes a loading space for luggage. The gate 3c may be rotatable between, for example, an open position (position shown in FIG. 1) where the gate 3c hangs downward from the floor portion 3a of the loading platform 3 and a closed position (not shown) where the gate 3c rises upward from the floor portion 3a of the loading platform 3.

[0017] The loading platform lifting device 4 is used, for example, when loading and unloading luggage from the rear of the loading platform 3 onto the loading platform floor surface 3d of the loading platform 3. The loading platform lifting device 4 may include, for example, a vertical lifting type lifting unit 5 and an attachment unit 6 for attaching the lifting unit 5 to the loading platform 3, as in this embodiment.

[0018] The lifting unit 5 may, for example, as in this embodiment, include a pair of cylindrical pillars (hereinafter also referred to as "outer columns") 7, 7 extending in the vertical direction D3, cylindrical inner columns 8, 8 extending in the vertical direction D3, inserted into the outer column 7 and moving in the vertical direction D3 relative to the outer column 7, and a cylindrical cross member 9 extending in the left-right direction D2 and connecting the pair of outer columns 7, 7.

[0019] In this embodiment, the outer column 7 has a support slit (hereinafter also referred to as an "outer slit") 7b extending in the up-down direction D3 in the rear wall 7a, and the inner column 8 has an inner slit 8b extending in the up-down direction D3 in the rear wall 8a. The outer slit 7b and the inner slit 8b communicate with each other in the front-rear direction D1.

[0020] The lifting unit 5 may, for example, as in this embodiment, include a slider 10 that moves in the vertical direction D3 relative to the outer column 7 and the inner column 8, and a load receiving platform 11 connected to the slider 10. The slider 10 is disposed across the inside and outside of the outer column 7 and the inner column 8 by being inserted through the outer slit 7b and the inner slit 8b.

[0021] 1 and 2, the load receiving platform 11 can move in the vertical direction D3 between a lower end position (see FIG. 1) and an upper end position (see FIG. 2). At this time, the slider 10 and the load receiving platform 11 move integrally with the inner column 8 in the vertical direction D3 relative to the outer column 7, or the slider 10 and the load receiving platform 11 move in the vertical direction D3 relative to the inner column 8 and the outer column 7.

[0022] The load receiving platform 11 may include, for example, a first plate 11a rotatably connected to the slider 10, and a second plate 11b rotatably connected to the first plate 11a, as in this embodiment. As a result, as shown in Figures 1 to 3, the load receiving platform 11 is deformable between a load receiving position (see Figures 1 and 2) in which the first and second plates 11a and 11b are unfolded and move along the front-rear direction D1, and a storage position (see Figure 3) in which the first and second plates 11a and 11b are folded and move along the up-down direction D3.

[0023] The mounting unit 6 may, for example, as in this embodiment, include a base portion 12 placed on the floor portion 3a of the loading platform 3, a lock pin 13 (see Figures 6 and 7) that fixes the base portion 12 to the floor portion 3a of the loading platform 3, an inversion mechanism 14 that inverts the lifting unit 5 around an axis in the left-right direction D2, and a rotation mechanism 15 that rotates the lifting unit 5 and the base portion 12 around an axis in the up-down direction D3.

[0024] 6 and 7, the lock pin 13 may, for example, fix the base portion 12 to the floor portion 3a of the loading platform 3 by sandwiching the base portion 12 and the floor portion 3a of the loading platform 3 in the up-down direction D3 as in this embodiment. The lock pin 13 may, for example, be detachable from the base portion 12 and the floor portion 3a of the loading platform 3. This allows the base portion 12 to be switched between a fixed state in which it is fixed to the floor portion 3a of the loading platform 3 and a movable state in which it is movable relative to the floor portion 3a of the loading platform 3.

[0025] 1 to 4, for example, as in this embodiment, the reversing mechanism 14 connects the lifting unit 5 to the base part 12 so that the lifting unit 5 is rotatable with respect to the base part 12. This allows the lifting unit 5 to be reversed between a use position (see Figs. 1 to 3) in which the load receiving platform 11 is used and a non-use position (see Fig. 4) in which the load receiving platform 11 is not used, as shown in Figs. 3 and 4.

[0026] The up and down of the lifting unit 5 is reversed between the use position and the non-use position. The reversing mechanism 14 may, for example, reverse the lifting unit 5 by manual force (for example, by turning the handle 14a), or may, for example, reverse the lifting unit 5 by a drive source (for example, a motor).

[0027] For example, as in this embodiment, the rotation mechanism 15 is fixed to the floor 3a of the loading platform 3 and connects the base part 12 to the floor part 3a of the loading platform 3 so that the base part 12 is rotatable on the floor part 3a of the loading platform 3. This allows the lifting unit 5 to rotate between a non-use position (see FIG. 4) and a storage position (see FIG. 5), as shown in FIG. 4 and FIG. 5.

[0028] When the lifting unit 5 is in the unused position, the cross member 9 is disposed so as to extend in the left-right direction D2, and when the lifting unit 5 is in the stored position, the cross member 9 is disposed so as to extend in the front-rear direction D1. The rotation mechanism 15 may rotate the base part 12 and the lifting unit 5 by, for example, human power, or may rotate the base part 12 and the lifting unit 5 by, for example, a drive source (for example, a motor).

[0029] In this way, the lifting unit 5 can be moved to a use position (see Figs. 1 to 3), a non-use position (see Fig. 4), and a storage position (see Fig. 5). In this specification, unless otherwise specified, the front-rear direction D1 (front, rear, front, rear), the left-right direction D2 (left, right, left, right), and the up-down direction D3 (up, down, up, down) are the directions D1 to D3 when the lifting unit 5 is located at the use position.

[0030] As shown in Figures 6 and 7, the lifting unit 5 may include, for example, a first guide roller 16 that guides the outer peripheral surface of the inner column 8, a second guide roller 17 that is guided by the inner peripheral surface of the outer column 7, and third guide rollers 18, 18 that are guided by the inner peripheral surface of the inner column 8.

[0031] The first guide roller 16 may be configured, for example, as in this embodiment, to be disposed inside and at a lower part of the outer column 7 and disposed outside the inner column 8. Also, the first guide roller 16 may be configured, for example, as in this embodiment, to be connected to the outer column 7 so as to be rotatable about an axis in the left-right direction D2 and fixed so that the position of the rotation axis is immovable. The first guide roller 16 guides the outer peripheral surface of the front wall 8c of the inner column 8.

[0032] The second guide roller 17 may be configured, for example, as in this embodiment, to be disposed inside the outer column 7 and connected to the upper end of the inner column 8. Also, the second guide roller 17 may be configured, for example, as in this embodiment, to be connected to the inner column 8 rotatably about an axis in the left-right direction D2, and the position of the rotation axis may move as the inner column 8 moves. The second guide roller 17 is guided by the inner circumferential surface of the rear wall 7a of the outer column 7.

[0033] The third guide rollers 18, 18 may be configured, for example, as in this embodiment, to be disposed inside the inner column 8 and connected to the slider 10. Also, the third guide rollers 18, 18 may be configured, for example, as in this embodiment, to be connected to the slider 10 so as to be rotatable about an axis in the left-right direction D2, and the position of the rotation axis may move as the slider 10 moves.

[0034] The third guide rollers 18 are guided by the inner circumferential surface of the inner column 8. Specifically, in this embodiment, the upper third guide roller 18 is guided by the inner circumferential surface of the rear wall 8a of the inner column 8, and the lower third guide roller 18 is guided by the inner circumferential surface of the front wall 8c of the inner column 8.

[0035] 8 and 9, the lifting unit 5 includes a lifting mechanism 20 that moves the load receiving platform 11. The lifting mechanism 20 may include, for example, ropes 21a, 21b having first ends fixed to the upper end of the slider 10, upper sheaves 22a, 22b, lower sheaves 23a, 23b, and fixed sheaves 24a-24e that are fixed so that the position of the rotation shaft is immovable, movable sheaves 25a-25f whose position of the rotation shaft is movable, and a drive source 26 that moves the movable sheaves 25a-25f.

[0036] As a result, the drive source 26 moves the movable sheaves 25a to 25f in the left-right direction D2, causing the slider 10 and the load receiving platform 11 to move in the up-down direction D3. Therefore, the slider 10 and the load receiving platform 11 move integrally with the inner column 8 in the up-down direction D3 relative to the outer column 7, or the slider 10 and the load receiving platform 11 move in the up-down direction D3 relative to the inner column 8 and the outer column 7.

[0037] The upper sheaves 22a, 22b may be arranged, for example, as in this embodiment, inside and at the upper part of the outer column 7, and be rotatable about an axis in the left-right direction D2. The lower sheaves 23a, 23b may be arranged, for example, as in this embodiment, inside the outer column 7 and the cross member 9, and at the lower part of the outer column 7, and be rotatable about an axis in the front-rear direction D1.

[0038] The fixed sheaves 24a-24e may be configured to be arranged inside the cross member 9 and rotatable about an axis in the front-rear direction D1, as in this embodiment. The fixed sheaves 24a-24e may include, for example, a plurality of upper fixed sheaves 24a, 24b arranged coaxially, and a plurality of lower fixed sheaves 24c-24e arranged below the upper fixed sheaves 24a, 24b and arranged coaxially, as in this embodiment.

[0039] The moving sheaves 25a-25f may be arranged, for example, as in this embodiment, inside the cross member 9 and be rotatable about an axis in the front-rear direction D1. The moving sheaves 25a-25f may include, for example, a plurality of upper moving sheaves 25a-25c arranged coaxially, and a plurality of lower moving sheaves 25d-25f arranged below the upper moving sheaves 25a-25c and arranged coaxially, as in this embodiment.

[0040] The first rope 21a may be wound around the first upper sheave 22a, the first lower sheave 23a, the first upper moving sheave 25a, the first upper fixed sheave 24a, the second upper moving sheave 25b, the second upper fixed sheave 24b, and the third upper moving sheave 25c in this order from the first end side fixed to the slider 10, as in this embodiment. And the second end of the first rope 21a may be fixed to the first rope fixing part 27, as in this embodiment, for example.

[0041] The second rope 21b may be wound around the second upper sheave 22b, the second lower sheave 23b, the first lower fixed sheave 24c, the first lower moving sheave 25d, the second lower fixed sheave 24d, the second lower moving sheave 25e, the third lower fixed sheave 24e, and the third lower moving sheave 25f in this order from the first end side fixed to the slider 10, as in this embodiment. And the second end of the second rope 21b may be fixed to the second rope fixing part 28, as in this embodiment, for example.

[0042] 10 and 11, the cross member 9 may include, for example, an upper wall 9a, a lower wall 9b, a front wall 9c, and a rear wall 9d. In Fig. 10, the cross member 9 is shown by a two-dot chain line, and the configuration disposed below the inside of the cross member 9 is not shown.

[0043] For example, as in this embodiment, the upper wall 9a, the lower wall 9b, and the front wall 9c may be connected to the outer column 7 by fixing means (for example, welding, fastening with bolts and nuts, etc.). Also, the rear wall 9d may be configured to be connected to the upper wall 9a and the lower wall 9b by fastening means, for example, with bolts and nuts.

[0044] As a result, the rear wall 9d is detachable from the upper wall 9a, the lower wall 9b, and the front wall 9c. The upper wall 9a, the lower wall 9b, and the front wall 9c are fixed walls that are fixed to the outer column 7, and the rear wall 9d is a detachable wall that is attached to and detached from the fixed walls. Therefore, by detaching the detachable wall from the fixed walls, it is possible to, for example, check the interior of the cross member 9 or adjust the internal configuration of the cross member 9.

[0045] Furthermore, the upper surface of the cross member 9 (the upper surface of the upper wall 9a) may be at the same height as the upper surface of the load receiving platform 11 located at the upper end position, for example. As a result, the upper surface of the cross member 9 is used as a transition surface between the load receiving platform 11 and the load bed floor surface 3d of the load bed 3. Note that the upper surface of the cross member 9 may be at the same height as the load bed floor surface 3d of the load bed 3, for example, or may be located slightly higher than the load bed floor surface 3d of the load bed 3, for example.

[0046] The lifting mechanism 20 may include, for example, as in this embodiment, a fixed bracket 31 that rotatably supports the fixed sheaves 24a-24e in the front-rear direction D1, movable brackets 41, 41 that rotatably support the movable sheaves 25a-25f in the front-rear direction D1, and a guide mechanism 50 that guides the movable bracket 41 in the left-right direction D2. The movable sheaves 25a-25f and the movable brackets 41, 41 form a moving unit 40.

[0047] Furthermore, the lifting mechanism 20 may include, for example, as in this embodiment, fourth reinforcing parts 32 extending in the left-right direction D2 and connected to each of the pair of outer columns 7. This makes it possible to reinforce the space between the outer columns 7, 7, thereby increasing the rigidity of the lifting unit 5.

[0048] The fourth reinforcing portion 32 may be connected to the fixed bracket 31 by, for example, a reinforcing connection portion 33. This makes it possible to reinforce the fixed bracket 31, thereby making it possible to suppress deformation of the fixed bracket 31. Note that, for example, the fourth reinforcing portion 32 may be disposed rearward of the fixed sheaves 24a to 24e and the movable sheaves 25a to 25f, as in this embodiment.

[0049] The second rope fixing portion 28 may be fixed to, for example, the fourth reinforcing portion 32. This allows the force of pulling the second rope 21b to be received by the fourth reinforcing portion 32. Although not particularly limited, the first rope fixing portion 27 may be fixed to, for example, the upper wall 9a of the cross member 9 as in this embodiment.

[0050] The driving source 26 is not particularly limited, but may be, for example, a cylinder 26 (e.g., a hydraulic cylinder) as in this embodiment. As a result, the driving source (cylinder) 26 includes a cylinder body 26a connected to the outer column 7, and a rod 26b that moves in the left-right direction D2 relative to the cylinder body 26a. Note that the driving source 26 may be configured, for example, by a motor and a rack-and-pinion mechanism.

[0051] As shown in Figures 10 to 12, the moving unit 40 may, for example, include a plate-shaped drive connection portion 42 fixed to the rod 26b and a pair of moving brackets 41, respectively, in order to connect the rod 26b and a pair of moving brackets 41, and first to third reinforcing portions 43 to 45 fixed to the pair of moving brackets 41, 41, respectively.

[0052] As a result, the drive connection portion 42 and the first to third reinforcing portions 43 to 45 are fixed to the pair of moving brackets 41, 41, respectively, thereby reinforcing the moving brackets 41, 41. Therefore, for example, vibration of the moving brackets 41, 41 can be suppressed, and rattling of the moving sheaves 25a to 25f can be suppressed.

[0053] The guide mechanism 50 includes first guide portions 51, 51 protruding in the front-rear direction D1 (specifically, the front direction) from one of the moving brackets 41, and a second guide portion 52 protruding in the front-rear direction D1 (specifically, the rear direction) from the front wall 9c of the cross member 9. The second guide portion 52 extends along the left-right direction D2.

[0054] As a result, the second guide portion 52 guides the first guide portions 51, 51, thereby guiding the moving bracket 41 in the left-right direction D2. Although not particularly limited, the second guide portion 52 may be formed, for example, in a rail shape, and the first guide portion 51 may be formed, for example, in a block shape.

[0055] In this embodiment, the first guide parts 51, 51 sandwich the second guide part 52 in the up-down direction D3. This effectively prevents the moving bracket 41 from moving with a rattle, and therefore effectively prevents the moving sheaves 25a-25f from moving with a rattle.

[0056] In this embodiment, the first guide portion 51 and the second guide portion 52 are disposed between the shafts of the upper moving sheaves 25a-25c and the shafts of the lower moving sheaves 25d-25f in the vertical direction D3. As a result, the second guide portion 52 guides the first guide portion 51 near the shafts of the moving sheaves 25a-25f, so that both the upper moving sheaves 25a-25c and the lower moving sheaves 25d-25f can be prevented from moving with a rattle.

[0057] Although not particularly limited, the second guide portion 52 may be fixed to the cross member 9 by a fixing means (for example, welding, fasteners such as bolts and nuts, etc.). Note that the second guide portion 52 may be integrally formed with the gloss member 9, for example.

[0058] In this embodiment, the load receiving platform 11 is raised by the moving bracket 41 and the moving sheaves 25a-25f moving leftward in the left-right direction D2. In contrast, in this embodiment, the first and second reinforcing parts 43, 44 are fixed to the left ends of the pair of moving brackets 41, 41, respectively, as shown in Figs.

[0059] As a result, for example, by attaching a wire or the like to the first reinforcing portion 43 or the second reinforcing portion 44 and pulling the wire or the like, the moving unit 40 can be moved to the left. In this manner, for example, when manually raising the load-receiving platform 11, a leftward force can be applied to the first reinforcing portion 43 or the second reinforcing portion 44. Therefore, if the driving source 26 breaks down, the load-receiving platform 11 can be moved to the upper end position (see FIG. 2) by human power in order to place the load-receiving platform 11 in the stored position (see FIG. 3).

[0060] Also, the first reinforcing part 43 may be fixed to the center 41g in the up-down direction D3 of the pair of moving brackets 41, 41, for example, as in this embodiment. With this, by attaching a wire or the like to the first reinforcing part 43 and pulling the wire or the like, a force can be applied near the center of gravity of the moving unit 40, so that the moving unit 40 can be stably moved to the left. Note that the first reinforcing part 43 may be formed in a rod shape, for example, as in this embodiment.

[0061] The second reinforcing portion 44 may be fixed at a position away from the center 41g in the up-down direction D3 of the pair of moving brackets 41, 41, as in this embodiment. The second reinforcing portion 44 may be formed in a plate shape, as in this embodiment.

[0062] The third reinforcing portion 45 may be fixed, for example, as in this embodiment, at the right end portion of the pair of moving brackets 41, 41, and at a position away in the up-down direction D3 from the center 41g in the up-down direction D3 of the pair of moving brackets 41, 41. The third reinforcing portion 45 may be formed, for example, in a rod shape, as in this embodiment.

[0063] 12, the moving bracket 41 may have a plurality of holes 41a-41f for attaching the first guide part 51 by, for example, a fixing means (for example, a bolt, etc.). The plurality of holes 41a-41f may be disposed at different distances from a center 41g of the moving bracket 41 in the up-down direction D3.

[0064] In this embodiment, the distance between the first holes 41a, 41b and the center 41g of the moving bracket 41 is a first distance, the distance between the second holes 41c, 41d and the center 41g of the moving bracket 41 is a second distance smaller than the first distance, and the distance between the third holes 41e, 41f and the center 41g of the moving bracket 41 is a third distance smaller than the second distance. In FIG. 12, the first guide part 51 is attached to the first holes 41a, 41b.

[0065] As a result, when the holes 41a-41f for attaching the first guide portion 51 are changed, the fixed position of the first guide portion 51 relative to the moving bracket 41 is changed in the vertical direction D3. Therefore, by fixing the first guide portion 51 to the moving bracket 41 at an appropriate position, the first guide portions 51, 51 can appropriately sandwich the second guide portion 52 in the vertical direction D3.

[0066] As a result, for example, the first guide portion 51 is smoothly guided by the second guide portion 52, and the movable sheaves 25a-25f can be prevented from moving with a rattle. In this manner, in the present embodiment, the change mechanism 46 that can change the fixed position of the first guide portion 51 relative to the movable bracket 41 in the up-down direction D3 is formed by the multiple holes 41a-41f.

[0067] [1] As described above, the loading platform lifting / lowering device 4 in this embodiment is as follows: A pair of cylindrical support columns 7, 7 extending in the vertical direction D3; A cylindrical cross member 9 connecting the pair of pillars 7, 7; A slider 10 is disposed between the inside and outside of the support column 7 and moves in a vertical direction D3 relative to the support column 7; A load receiving platform 11 connected to the slider 10; Ropes 21a and 21b connected to the slider 10; movable sheaves 25a to 25f disposed inside the cross member 9 and around which the ropes 21a and 21b are wound; a moving bracket 41 that supports the moving sheaves 25a to 25f rotatably around an axis in the first horizontal direction D1; a drive source 26 for moving the movable brackets 41 and the movable sheaves 25a to 25f in a second horizontal direction D2 perpendicular to the first horizontal direction D1 in order to move the slider 10; a guide mechanism 50 that guides the movable bracket 41 in the second lateral direction D2, The guide mechanism 50 is A first guide portion 51 fixed to the moving bracket 41; A second guide portion 52 is fixed to the cross member 9 and guides the first guide portion 51. At least one of the first guide portion 51 and the second guide portion 52 (in this embodiment, the second guide portion 52) extends in the second lateral direction D2. This configuration is preferred.

[0068] According to this configuration, the first guide portion 51 is fixed to the moving bracket 41, and the second guide portion 52 is fixed to the cross member 9. At least one of the first guide portion 51 and the second guide portion 52 (in this embodiment, the second guide portion 52) extends in the second lateral direction D2, and the second guide portion 52 guides the first guide portion 51. As a result, the moving bracket 41 is guided in the second lateral direction D2, and therefore, it is possible to suppress the moving sheaves 25a to 25f from moving with rattling.

[0069] [2] In addition, in the loading platform lifting device 4 described above in [1], as in this embodiment, One of the first guide portion 51 and the second guide portion 52 (in this embodiment, the first guide portion 51) sandwiches the other guide portion (in this embodiment, the second guide portion 52) in the up-down direction D3. This configuration is preferred.

[0070] According to such a configuration, one guide portion (in this embodiment, the first guide portion 51) clamps the other guide portion (in this embodiment, the second guide portion 52) in the vertical direction D3, thereby further preventing the movable sheaves 25a to 25f from moving with rattle.

[0071] [3] In addition, in the loading platform lifting device 4 described in [2] above, as in this embodiment, The moving sheaves 25a to 25f include upper moving sheaves 25a to 25c and lower moving sheaves 25d to 25f that are separated in the vertical direction D3, The other guide portion (in this embodiment, the second guide portion 52) is disposed between the shafts of the upper moving sheaves 25a to 25c and the shafts of the lower moving sheaves 25d to 25f in the vertical direction D3. This configuration is preferred.

[0072] According to such a configuration, the other guide portion (in this embodiment, the second guide portion 52) is positioned between the axis of the upper moving sheaves 25a-25c and the axis of the lower moving sheaves 25d-25f in the vertical direction D3, thereby preventing both the upper moving sheaves 25a-25c and the lower moving sheaves 25d-25f from moving with a rattle.

[0073] [4] In addition, in any one of the load-receiving platform lifting and lowering devices 4 described above in [1] to [3], as in this embodiment, The first guide portion 51 sandwiches the second guide portion 52 in the up-down direction D3, The loading platform lifting device 4 is provided with a change mechanism 46 capable of changing the fixed position of the first guide portion 51 relative to the moving bracket 41 in the vertical direction D3. This configuration is preferred.

[0074] According to such a configuration, since the changing mechanism 46 can change the fixed position of the first guide part 51 relative to the moving bracket 41 in the vertical direction D3, it is possible to fix the first guide part 51 to an appropriate position on the moving bracket 41. This allows the first guide part 51 to appropriately sandwich the second guide part 52 in the vertical direction D3.

[0075] [5] In addition, in any one of the load-receiving platform lifting and lowering devices 4 described above in [1] to [4], as in this embodiment, The load receiving platform 11 is raised by the movement of the movable bracket 41 and the movable sheaves 25a to 25f in a first direction (in this embodiment, a leftward direction) of the second horizontal direction D2, The moving brackets 41 are provided in pairs so as to sandwich the moving sheaves 25a to 25f in the first horizontal direction D1. The loading platform lifting device 4 includes reinforcing parts (first and second reinforcing parts 43, 44 in this embodiment) fixed to the ends of the pair of moving brackets 41, 41 in the first direction in the second horizontal direction D2, This configuration is preferred.

[0076] According to this configuration, the reinforcing parts (in this embodiment, the first and second reinforcing parts 43, 44) are fixed to the pair of movable brackets 41, 41, respectively, so that the movable bracket 41 can be reinforced. Also, since the reinforcing parts 43, 44 are fixed to the end parts of the movable bracket 41 in the first direction (in this embodiment, the left direction) of the second horizontal direction D2, a force in the first direction of the second horizontal direction D2 can be applied to the reinforcing parts 43, 44 when the load receiving platform 11 is manually raised.

[0077] [6] In addition, the loading platform lifting / lowering device 4 according to any one of the above items [1] to [5] may be, as in this embodiment, Fixed sheaves 24a to 24e are disposed inside the cross member 9 and around which the ropes 21a and 21b are wound; A fixed bracket 31 that is fixed to the cross member 9 and supports the fixed sheaves 24a to 24e rotatably around an axis in the first lateral direction D1; A reinforcing portion (in this embodiment, a fourth reinforcing portion 32) connected to at least one of the pillar 7 and the cross member 9 (in this embodiment, the pillar 7), The fixing bracket 31 and the rope (in the embodiment, the second rope 21b) are fixed to the reinforcing portion 32. This configuration is preferred.

[0078] According to this configuration, since the fixed bracket 31 is fixed to the reinforcing portion (in this embodiment, the fourth reinforcing portion 32), it is possible to reinforce the fixed bracket 31. Furthermore, since the rope (in this embodiment, the second rope 21b) is fixed to the reinforcing portion 32, it is possible for the reinforcing portion 32 to bear the force of pulling the rope 21b.

[0079] [7] In addition, as in this embodiment, the vehicle 1 is Any one of the load receiving platform lifting devices 4 described above in [1] to [6]; The loading platform 3 on which the loading platform lifting device 4 is attached is provided. This configuration is preferred.

[0080] According to such a configuration, it is possible to prevent the movable sheaves 25a to 25f from moving with rattle.

[0081] The vehicle 1 and the loading platform lifting device 4 are not limited to the configurations of the above-mentioned embodiment, and are not limited to the above-mentioned effects. Of course, the vehicle 1 and the loading platform lifting device 4 can be modified in various ways without departing from the gist of the present invention. For example, it is of course possible to arbitrarily select one or more of the configurations and methods of the various modified examples described below and adopt them in the configurations and methods of the above-mentioned embodiment.

[0082] (A) In the loading platform lifting / lowering device 4 according to the above embodiment, the second guide portion 52 extends in the second horizontal direction D2, and the first guide portion 51 sandwiches the second guide portion 52 in the up-down direction D3. However, the loading platform lifting / lowering device 4 is not limited to this configuration.

[0083] For example, the first guide portion 51 may extend in the second horizontal direction D2, or both the first guide portion 51 and the second guide portion 52 may extend in the second horizontal direction D2. For example, the first guide portion 51 may be disposed only above the second guide portion 52, or the second guide portion 52 may sandwich the first guide portion 51 in the up-down direction D3. Therefore, any of the configurations listed below may be used.

[0084] For example, the second guide portion 52 may extend in the second horizontal direction D2 and sandwich the first guide portion 51 in the up-down direction D3. Alternatively, for example, the second guide portion 52 may extend in the second horizontal direction D2 and the first guide portion 51 may be disposed only above the second guide portion 52.

[0085] Also, for example, the first guide portion 51 may extend in the second horizontal direction D2, and the second guide portion 52 may sandwich the first guide portion 51 in the up-down direction D3. Also, for example, the first guide portion 51 may extend in the second horizontal direction D2, and the first guide portion 51 may sandwich the second guide portion 52 in the up-down direction D3. Also, for example, the first guide portion 51 may extend in the second horizontal direction D2, and the first guide portion 51 may be disposed only above the second guide portion 52.

[0086] Also, for example, the first guide portion 51 and the second guide portion 52 may extend in the second horizontal direction D2, and the second guide portion 52 may sandwich the first guide portion 51 in the up-down direction D3. Also, for example, the first guide portion 51 and the second guide portion 52 may extend in the second horizontal direction D2, and the first guide portion 51 may sandwich the second guide portion 52 in the up-down direction D3. Also, for example, the first guide portion 51 and the second guide portion 52 may extend in the second horizontal direction D2, and the first guide portion 51 may be disposed only above the second guide portion 52.

[0087] (B) In the load-receiving-table lifting / lowering device 4 according to the above embodiment, the first guide portion 51 protrudes in the first horizontal direction D1 from the moving bracket 41, and the second guide portion 52 protrudes in the first horizontal direction D1 from the cross member 9. However, the load-receiving-table lifting / lowering device 4 is not limited to this configuration.

[0088] For example, the first guide portion 51 may protrude in the vertical direction D3 (specifically, downward) from the moving bracket 41, the second guide portion 52 may protrude in the first lateral direction D1 from the cross member 9, and the upper surface of the second guide portion 52 may guide the lower surface of the first guide portion 51. Also, for example, the first guide portion 51 may protrude in the vertical direction D3 (specifically, downward) from the moving bracket 41, the second guide portion 52 may protrude in the vertical direction D3 (specifically, upward) from the cross member 9, and the upper surface of the second guide portion 52 may guide the lower surface of the first guide portion 51.

[0089] (C) In addition, in the load-receiving-table lifting / lowering device 4 according to the above embodiment, the first guide portion 51 is configured to protrude in the first lateral direction D1 (specifically, forward) from one (front) of the moving brackets 41. However, the load-receiving-table lifting / lowering device 4 is not limited to such a configuration.

[0090] For example, the first guide portion 51 may be configured to protrude in the first horizontal direction D1 (specifically, the front direction) from one (front) moving bracket 41, and to protrude in the first horizontal direction D1 (specifically, the rear direction) from the other (rear) moving bracket 41. In such a configuration, one second guide portion 52 that guides the first guide portion 51 fixed to one moving bracket 41 in the second horizontal direction D2, and the other second guide portion 52 that guides the first guide portion 51 fixed to the other moving bracket 41 in the second horizontal direction D2 are provided.

[0091] (D) In ​​addition, in the load-receiving-table lifting / lowering device 4 according to the above embodiment, the movable sheaves 25a-25f are configured to include the upper movable sheaves 25a-25c and the lower movable sheaves 25d-25f that are separated in the vertical direction D3. However, the load-receiving-table lifting / lowering device 4 is not limited to this configuration. For example, all the movable sheaves 25a-25f may be arranged side by side in the first horizontal direction D1 so that their rotation axes are coaxial.

[0092] (E) In addition, in the loading platform lifting / lowering device 4 according to the above embodiment, the other guide portion 52 sandwiched between the guide portions 51, 51 in the vertical direction D3 is arranged between the shafts of the upper moving sheaves 25a-25c and the shafts of the lower moving sheaves 25d-25f in the vertical direction D3. However, the loading platform lifting / lowering device 4 is not limited to this configuration.

[0093] For example, the other guide part 52 sandwiched between the guide parts 51, 51 in the vertical direction D3 may be arranged above the axes of the upper moving sheaves 25a to 25c in the vertical direction D3. Also, for example, the other guide part 52 sandwiched between the guide parts 51, 51 in the vertical direction D3 may be arranged below the axes of the lower moving sheaves 25d to 25f in the vertical direction D3.

[0094] (F) In addition, in the load receiving platform lifting device 4 according to the above embodiment, the fixed position of the first guide portion 51 relative to the moving bracket 41 can be changed in the vertical direction D3 by the change mechanism 46. However, the load receiving platform lifting device 4 is not limited to such a configuration. For example, the fixed position of the first guide portion 51 relative to the moving bracket 41 may be fixed. Although not particularly limited, for example, the moving bracket 41 and the first guide portion 51 may be integrally molded as shown in FIG. 13.

[0095] (G) In addition, in the load receiving platform lifting device 4 according to the above embodiment, the fixed position of the second guide portion 52 relative to the cross member 9 is configured to be invariable. However, the load receiving platform lifting device 4 is not limited to such a configuration. For example, the fixed position of the second guide portion 52 relative to the cross member 9 may be configured to be changeable in the up-down direction D3.

[0096] (H) In addition, in the load-receiving-table lifting / lowering device 4 according to the above embodiment, the change mechanism 46 is configured by a plurality of holes 41a to 41f provided in the moving bracket 41. However, the load-receiving-table lifting / lowering device 4 is not limited to this configuration.

[0097] For example, the changing mechanism 46 may be configured by a plurality of holes provided in the first guide part 51. In such a configuration, for example, the first guide part 51 has a plurality of holes for attachment to the moving bracket 41, and the fixed position of the first guide part 51 relative to the moving bracket 41 can be changed in the up-down direction D3 by changing the holes for attachment to the moving bracket 41.

[0098] (I) In addition, in the load-receiving-table lifting / lowering device 4 according to the above embodiment, the load-receiving table 11 is lifted by the moving sheaves 25a-25f moving in the first direction of the second horizontal direction D2, and the first and second reinforcing parts 43, 44 are fixed to the ends of the pair of moving brackets 41, 41 in the first direction of the second horizontal direction D2, respectively. However, the load-receiving-table lifting / lowering device 4 is not limited to this configuration.

[0099] For example, the first and second reinforcing parts 43, 44 may be fixed at positions away from the ends of the pair of moving brackets 41, 41 in the first direction of the second horizontal direction D2. Specifically, the first and second reinforcing parts 43, 44 may be fixed to the upper ends, lower ends, or ends of the pair of moving brackets 41, 41 in the second direction of the second horizontal direction D2.

[0100] (J) In addition, in the load-receiving-table lifting / lowering device 4 according to the above embodiment, the fixed bracket 31 and the second rope 21b are fixed to the fourth reinforcing portion 32. However, the load-receiving-table lifting / lowering device 4 is not limited to this configuration.

[0101] For example, the fixing bracket 31 may be fixed to the cross member 9 or the outer column 7. Also, for example, the second rope 21b may be fixed to the cross member 9 or the outer column 7. In such a configuration, the lifting unit 5 may not include the fourth reinforcing part 32. Also, for example, the second end of the first rope 21a may be fixed to the fourth reinforcing part 32 via the first rope fixing part 27.

[0102] (K) In the load-receiving-table lifting and lowering device 4 according to the above embodiment, the fourth reinforcing parts 32 are connected to the pair of outer columns 7, 7. However, the load-receiving-table lifting and lowering device 4 is not limited to this configuration.

[0103] For example, the fourth reinforcing part 32 may be configured to be connected to only one of the outer columns 7. Also, for example, the fourth reinforcing part 32 may be configured to be connected to the cross member 9. Also, for example, the fourth reinforcing part 32 may be configured to be connected to at least one of the outer columns 7 and the cross member 9.

[0104] (L) In addition, in the loading platform lifting / lowering device 4 according to the above embodiment, the lifting unit 5 can be moved to a use position, a non-use position, and a storage position by the reversing mechanism 14 and the rotating mechanism 15, and therefore the outer column 7 can be moved relative to the loading platform 3. However, the loading platform lifting / lowering device 4 is not limited to this configuration.

[0105] For example, the outer column 7 may be configured to be immovably fixed to the loading platform 3. Specifically, the loading platform lifting and lowering device 4 may be configured not to include the reversing mechanism 14 and the rotating mechanism 15.

[0106] Also, for example, the base portion 12 may be fixed to the loading platform 3, and the lifting unit 5 may be reversible between the use position and the non-use position. Specifically, the loading platform lifting device 4 may be provided with the reversing mechanism 14 but may not be provided with the rotating mechanism 15.

[0107] (M) Furthermore, the loading platform lifting device 4 according to the above embodiment is configured to include an inner column 8. However, the loading platform lifting device 4 is not limited to this configuration. For example, the loading platform lifting device 4 may not include the inner column 8, and the third guide roller 18 rotatably connected to the slider 10 may be guided by the inner circumferential surface of the outer column 7.

[0108] (N) In the vehicle 1 according to the above embodiment, the loading platform lifting / lowering device 4 is configured to be directly attached to the loading platform 3. However, the loading platform lifting / lowering device 4 is not limited to this configuration. For example, the loading platform lifting / lowering device 4 may be configured to be indirectly attached to the loading platform 3 by being attached to the vehicle body 2.

[0109] (O) For example, the order of execution of each process, such as operations, procedures, steps, and stages, in the methods and apparatuses shown in the claims, specifications, and drawings, may be arbitrary, as long as the result of a previous process is not used in a subsequent process. For example, even if the description uses "first," "next," etc. for convenience, it does not mean that the processes must be executed in that order. [Explanation of symbols]

[0110] Reference Signs List 1...vehicle, 2...vehicle body, 2a...vehicle body frame, 3...loading platform, 3a...floor, 3b...side wall, 3c...gateway, 3d...loading platform floor, 4...loading platform lifting device, 5...lifting unit, 6...mounting unit, 7...support (outer column), 7a...rear wall, 7b...support slit (outer slit), 8...inner column, 8a...rear wall, 8b...inner slit, 8c...front wall, 9...cross member, 9a...upper wall, 9b...lower wall, 9c...front wall, 9d...rear wall, 10...slider , 11...load receiving platform, 11a...first plate, 11b...second plate, 12...base portion, 13...lock pin, 14...reversal mechanism, 14a...handle, 15...rotation mechanism, 16...first guide roller, 17...second guide roller, 18...third guide roller, 20...lifting mechanism, 21a...first rope, 21b...second rope, 22a...first upper sheave, 22b...second upper sheave, 23a...first lower sheave, 23b...first lower sheave, 24a...first upper fixed Sheave, 24b...second upper fixed sheave, 24c...first lower fixed sheave, 24d...second lower fixed sheave, 24e...third lower fixed sheave, 25a...first upper moving sheave, 25b...second upper moving sheave, 25c...third upper moving sheave, 25d...first lower moving sheave, 25e...second lower moving sheave, 25f...third lower moving sheave, 26...driving source (cylinder), 26a...cylinder body, 26b...rod, 27...first rope fixing portion, 28...second rope fixing portion , 31...fixed bracket, 32...fourth reinforcing portion, 33...reinforcing connection portion, 40...moving unit, 41...moving bracket, 41a, 41b...first hole, 41c, 41d...second hole, 41e, 41f...third hole, 41g...center, 42...driving connection portion, 43...first reinforcing portion, 44...second reinforcing portion, 45...third reinforcing portion, 46...changing mechanism, 50...guide mechanism, 51...first guide portion, 52...second guide portion, D1...front-rear direction, D2...left-right direction, D3...up-down direction

Claims

1. A pair of cylindrical supports extending in the vertical direction; A cylindrical cross member connecting the pair of pillars; a slider disposed between the inside and outside of the support column and movable in a vertical direction relative to the support column; A load receiving platform connected to the slider; A rope connected to the slider; A moving sheave is disposed inside the cross member and around which the rope is wound; a moving bracket that rotatably supports the moving sheave around an axis in the first horizontal direction; a drive source that moves the moving bracket and the moving sheave in a second lateral direction perpendicular to the first lateral direction in order to move the slider; a guide mechanism for guiding the movable bracket in the second lateral direction, The guide mechanism includes: A first guide portion fixed to the movable bracket; a second guide portion fixed to the cross member and guiding the first guide portion, A loading platform lifting device, wherein at least one of the first guide portion and the second guide portion extends in the second lateral direction.

2. The loading platform lifting device according to claim 1 , wherein one of the first guide portion and the second guide portion vertically sandwiches the other guide portion.

3. The moving sheave includes an upper moving sheave and a lower moving sheave which are separated in the vertical direction, 3. The load-receiving platform lifting device according to claim 2, wherein the other guide portion is disposed between a shaft of the upper moving sheave and a shaft of the lower moving sheave in the vertical direction.

4. The first guide portion sandwiches the second guide portion in the up-down direction, The loading platform lifting device according to claim 1 , further comprising a change mechanism capable of changing a fixed position of the first guide portion relative to the movable bracket in the vertical direction.

5. The load receiving platform is raised by the movement of the moving bracket and the moving sheave in a first direction in the second lateral direction, The moving bracket is provided in a pair so as to sandwich the moving sheave in the first horizontal direction, The load-receiving platform lifting device according to claim 1 , further comprising reinforcing portions fixed to the ends of the pair of moving brackets in the first direction and in the second lateral direction, respectively.

6. A fixed sheave is disposed inside the cross member and around which the rope is wound; a fixed bracket fixed to the cross member and supporting the fixed sheave rotatably about an axis in the first lateral direction; a reinforcing portion connected to at least one of the pillar and the cross member, The platform lifting device according to claim 1 , wherein the fixing bracket and the rope are fixed to the reinforcing portion.

7. A loading platform lifting device according to any one of claims 1 to 6, A vehicle comprising: a loading platform to which the loading platform lifting device is attached.

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