Loading platform lifting device and vehicle

Abstract

To provide a loading platform lifting device which can supply grease to rotating bodies easily.SOLUTION: A loading platform lifting device includes: a pair of cylindrical columns extending in a vertical direction; a cylindrical cross member extending in a lateral direction and connecting the pair of columns; rotating bodies disposed in at least one of the columns and the cross member; and grease nipples each of which is connected to the rotating body to supply grease to the rotating body. The grease nipples are exposed from at least one of the columns and the cross member.SELECTED DRAWING: Figure 9

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 extending horizontally and connecting the pair of pillars, and a rotating body arranged inside the pillars and the cross member (for example, Patent Document 1). However, in the load-receiving platform lifting device according to Patent Document 1, in order to supply grease to the rotating body arranged inside the pillars, the load-receiving platform lifting device needs to be completely disassembled, and the task of supplying grease to the rotating body is cumbersome. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2003-341411 A Summary of the Invention [Problem to be solved by the invention]

[0004] Therefore, an object of the present invention is to provide a loading platform lifting device and a vehicle that can easily supply grease to a rotating body. [Means for solving the problem]

[0005] The loading platform lifting device is A pair of cylindrical supports extending in the vertical direction; A tubular cross member extending laterally and connecting the pair of pillars; A rotating body disposed inside at least one of the pillar and the cross member; a grease nipple connected to the rotating body for supplying grease to the rotating body; The grease nipple is exposed from at least one of the support pillar and the cross member.

[0006] 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]

[0007] [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 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 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 bottom end position in the load-receiving posture. [Figure 8] 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 9] Cross-sectional view of the main part taken along line IX-IX in FIG. 7. [Figure 10] A diagram of the main part as seen from the X direction in Figure 9 [Figure 11] Cross-sectional view of the main part taken along line XI-XI in FIG. 7. [Figure 12] A view of the main part from the XII direction in Figure 11 [Figure 13] FIG. 8 is a cross-sectional view of a main part taken along line XIII-XIII in FIG. 7, showing a state in which the cover has been removed; [Figure 14] A view of the main part from the XIV direction in Figure 13 [Figure 15] Main part view from the XV direction of Figure 13 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] 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.

[0009] 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.

[0010] 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.

[0011] 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.

[0012] Hereinafter, an embodiment of the vehicle and the loading platform lifting / lowering device will be described with reference to Figures 1 to 15. 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.

[0013] 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.

[0014] 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.

[0015] 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.

[0016] 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.

[0017] 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.

[0018] 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 (see FIG. 9).

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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 7 and 8) 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.

[0023] 7 and 8, 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.

[0024] 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.

[0025] 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).

[0026] 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.

[0027] 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).

[0028] 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.

[0029] As shown in Figures 6 to 8, the lifting unit 5 may include, for example, a rope (not shown) having a first end fixed inside the cross member 9 and a second end fixed to the upper end of the slider 10, an upper sheave 21, a lower sheave 22 and a fixed sheave 23 that are wound around the rope and fixed so that the position of the rotating shaft is immovable, a movable sheave 24 whose position of the rotating shaft moves, and a drive source (e.g., an extendable cylinder) 16 that moves the movable sheave 24.

[0030] As a result, the drive source 16 moves the movable sheave 24 in the left-right direction D2, causing the slider 10 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.

[0031] The upper sheave 21 may be configured, for example, as in this embodiment, to be disposed inside and at the upper part of the outer column 7 and to be rotatable about an axis in the left-right direction D2. The lower sheave 22 may be configured, for example, as in this embodiment, to be disposed inside the outer column 7 and the cross member 9 and at the lower part of the outer column 7 and to be rotatable about an axis in the front-rear direction D1.

[0032] The fixed sheave 23 may be arranged, for example, as in this embodiment, inside the cross member 9 and be rotatable about an axis in the fore-and-aft direction D1. The movable sheave 24 may be arranged, for example, as in this embodiment, inside the cross member 9 and be rotatable about an axis in the fore-and-aft direction D1.

[0033] In addition, the lifting unit 5 may be equipped with, for example, a first guide roller 25 that guides the outer peripheral surface of the inner column 8, a second guide roller 26 that is guided by the inner peripheral surface of the outer column 7, and third guide rollers 27, 27 that are guided by the inner peripheral surface of the inner column 8, as in this embodiment.

[0034] The first guide roller 25 may be configured, for example, as in this embodiment, to be disposed inside and at the bottom of the outer column 7 and disposed outside the inner column 8. Also, the first guide roller 25 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 25 guides the outer peripheral surface of the front wall 8c of the inner column 8.

[0035] The second guide roller 26 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 26 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 moves as the inner column 8 moves. The second guide roller 26 is guided by the inner circumferential surface of the rear wall 7a of the outer column 7.

[0036] The third guide rollers 27, 27 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 27, 27 may be configured, for example, as in this embodiment, to be connected to the slider 10 rotatably about an axis in the left-right direction D2, and the position of the rotation axis may move as the slider 10 moves.

[0037] The third guide rollers 27 are guided by the inner circumferential surface of the inner column 8. Specifically, in this embodiment, the upper third guide roller 27 is guided by the inner circumferential surface of the rear wall 8a of the inner column 8, and the lower third guide roller 27 is guided by the inner circumferential surface of the front wall 8c of the inner column 8.

[0038] In this embodiment, the sheaves 21-24 and the guide rollers 25-27 are the multiple rotating bodies 21-27 that require the supply of grease. The lifting unit 5 may include grease nipples 31-34 connected to the rotating bodies 21-27 in order to supply grease to the rotating bodies 21-27, as shown in Figs. 9-15. The lifting unit 5 may include, for example, rotating bodies that do not require the supply of grease.

[0039] 9 and 10, the first grease nipple 31 is connected to the first guide roller 25, for example, in order to supply grease to the first guide roller 25. While the first guide roller 25 is disposed inside the outer column 7, the first grease nipple 31 is disposed outside the outer column 7.

[0040] This exposes the first grease nipple 31. Therefore, a grease supplying tool X1 (for example, a grease gun) can be easily connected to the first grease nipple 31, so that grease can be easily supplied to the first guide roller 25 via the grease supply path 35.

[0041] 11 and 12, the second grease nipple 32 is connected to the upper sheave 21, for example, to supply grease to the upper sheave 21. While the upper sheave 21 is disposed inside the outer column 7, the outer column 7 may be provided with a first opening 7e in the right wall 7c (or the left wall 7d), for example, as in this embodiment.

[0042] As a result, the second grease nipple 32 is exposed by the first opening 7e, so that the grease supplier X1 can be connected to the second grease nipple 32 via the first opening 7e. Therefore, grease can be easily supplied to the upper sheave 21 via the grease supply path 35. Note that in this embodiment, the second grease nipple 32 is disposed inside the outer column 7, but is not limited to such a configuration and may, for example, extend to the outside of the outer column 7 via the first opening 7e.

[0043] 13 and 14, the third grease nipple 33 is connected to the second guide roller 26, for example, to supply grease to the second guide roller 26. The second guide roller 26 is disposed inside the outer column 7, while the third grease nipple 33 is exposed from the outer slit 7b. This allows the grease supplier X1 to be connected to the third grease nipple 33 via the outer slit 7b, making it possible to easily supply grease to the second guide roller 26 via the grease supply path 35.

[0044] Note that the tip of the third grease nipple 33 may be disposed between the inner circumferential surface and outer circumferential surface of the rear wall 7a of the outer column 7 in the direction (front-rear direction) D1 in which the third grease nipple 33 extends toward the tip, as in this embodiment. Specifically, the tip of the third grease nipple 33 may be disposed outward from the inner circumferential surface of the outer column 7 and inward from the outer circumferential surface of the outer column 7.

[0045] As a result, the third grease nipple 33 does not extend to the outside of the outer column 7, and therefore it is possible to prevent the third grease nipple 33 from hitting objects outside the outer column 7 when the inner column 8 moves in the vertical direction D3 relative to the outer column 7. On the other hand, because the tip of the third grease nipple 33 is positioned outward from the inner circumferential surface of the outer column 7, it becomes easy to connect the grease supply tool X1 to the third grease nipple 33.

[0046] 13 and 15, the fourth grease nipple 34 is connected to the lower sheave 22, for example, to supply grease to the lower sheave 22. While the lower sheave 22 is disposed inside the outer column 7 and the cross member 9, the outer column 7 may be provided with a second opening 7f in the left wall 7d (or right wall 7c), for example, as in this embodiment.

[0047] As a result, the fourth grease nipple 34 is exposed by the second opening 7f. In the present embodiment, the fourth grease nipple 34 is disposed inside the outer column 7 and the cross member 9.

[0048] In contrast, the lifting unit 5 may be provided with a cover 17 that is detachable from the outer column 7 and covers the second opening 7f, as in this embodiment. Note that Figures 13 and 15 show a state in which the cover 17 is detached from the outer column 7 (the position of the cover 17 when attached is shown by a two-dot chain line), while Figures 7 and 8 show a state in which the cover 17 is attached to the outer column 7.

[0049] As a result, by attaching the cover 17 to the outer column 7, the cover 17 covers the second opening 7f, thereby protecting the fourth grease nipple 34. Although not particularly limited, the cover 17 may be fixed to the outer column 7 by, for example, a fixing means (for example, a bolt or the like).

[0050] Furthermore, by detaching the cover 17 from the outer column 7, the fourth grease nipple 34 is exposed by the second opening 7f. Therefore, the grease supplying tool X1 can be connected to the fourth grease nipple 34 via the second opening 7f, so that grease can be easily supplied to the lower sheave 22 via the grease supply path 35.

[0051] In this way, since the grease nipples 31 to are exposed from the outer column 7, the grease supplier X1 can be easily connected to the grease nipples 31 to . Therefore, grease can be easily supplied to the rotating bodies 21, 22, 25, and .

[0052] In this specification, "exposed" does not only refer to a configuration such as the first grease nipple 31, which is positioned outside the outer column 7 (cross member 9) and thereby exposed from the outer column 7 (cross member 9), but also includes configurations such as the second and fourth grease nipples 32, 34, which are positioned inside the outer column 7 (cross member 9) and exposed from the outer column 7 (cross member 9) through the openings 7e, 7f.

[0053] Specifically, the latter configuration has a continuous space from the grease nipples 32-34 to the outside of the outer column 7 (cross member 9) so that a grease supplying tool X1 (for example, the nozzle of a grease gun) can be connected to the grease nipples 32-34 from outside the outer column 7 (cross member 9).

[0054] For example, the latter configuration has a cylindrical space of a predetermined diameter extending from the tips of the grease nipples 32-34 to the outside of the outer column 7 (cross member 9) in the direction in which the grease nipples 32-34 extend toward their tips (the second and fourth grease nipples 32, 34 extend in the left-right direction D2, and the third grease nipple 33 extends in the front-to-rear direction D1).

[0055] Although not particularly limited, the predetermined diameter may be, for example, 5 mm or more, or, for example, 10 mm or more, or, for example, 20 mm or more. Furthermore, although not particularly limited, the predetermined diameter may be, for example, 100 mm or less, or, for example, 75 mm or less, or, for example, 50 mm or less.

[0056] Furthermore, in this specification, a configuration that is exposed by removing the cover 17 from the outer column 7 (cross member 9), i.e., that is intermittently exposed, such as the fourth grease nipple 34, is said to be "intermittently exposed," and a configuration that is continuously exposed without being covered by the cover 17, such as the first to third grease nipples 31 to 33, is said to be "continuously exposed."

[0057] Although not shown, grease nipples connected to the fixed sheave 23 and the moving sheave 24 arranged inside the cross member 9 may also be exposed from the cross member 9. For example, the grease nipples connected to the fixed sheave 23 and the moving sheave 24 may be continuously exposed from the cross member 9 by being arranged outside the cross member 9, like the first grease nipple 31.

[0058] Also, for example, the grease nipples connected to the fixed sheave 23 and the moving sheave 24 may be continuously exposed through an opening provided in the cross member 9, like the third grease nipple 33. Also, for example, the grease nipples connected to the fixed sheave 23 and the moving sheave 24 may be intermittently exposed through an opening provided in the cross member 9, like the fourth grease nipple 34, by removing a cover from the opening.

[0059] Incidentally, in the present embodiment, the upper sheave 21, the lower sheave 22, the first guide roller 25, and the second guide roller 26 are disposed inside the outer column 7 and outside the inner column 8. As a result, there are cases where grease adheres to the outer peripheral surface of the inner column 8, causing the grease to move in and out between the inside and outside of the outer column 7. In such a case, for example, sand or dirt adhering to the grease on the outside of the outer column 7 may enter the inside of the outer column 7, and as a result, for example, there is a risk that the inner column 8 may malfunction.

[0060] Therefore, returning to Fig. 6, the lifting unit 5 may be equipped with, for example, a grease collection unit 18 that collects grease. A base end 18a of the grease collection unit 18 is fixed to the lower part of the outer column 7, and a tip end 18b of the grease collection unit 18 is in contact with the outer peripheral surface of the inner column 8. As a result, grease adhering to the outer peripheral surface of the inner column 8 is collected in the grease collection unit 18. Therefore, it is possible to prevent the grease adhering to the outer peripheral surface of the inner column 8 from leaking from the outer column 7.

[0061] Although not particularly limited, the grease collecting portion 18 may be elastic as in this embodiment, and may be formed in a plate shape as in this embodiment. Note that, although the grease collecting portion 18 is disposed so as to contact the left wall 8d and the right wall 8e of the inner column 8 in Fig. 6, it may also be disposed so as to contact the rear wall 8a and the front wall 8c as well. Note that the grease collecting portion 18 is not shown in Figs. 7 and 8.

[0062] [1] As described above, the loading platform lifting device 4 is configured as follows: A pair of cylindrical support columns 7, 7 extending in the vertical direction D3; A cylindrical cross member 9 extending in the lateral direction D2 and connecting the pair of pillars 7, 7; Rotating bodies 21, 22, 25, 26 arranged inside at least one of the pillar 7 and the cross member 9; Grease nipples 31 to 34 are connected to the rotating bodies 21, 22, 25, and 26 in order to supply grease to the rotating bodies 21, 22, 25, and 26, The grease nipples 31 to 34 are exposed from at least one of the support pillar 7 and the cross member 9. This configuration is preferred.

[0063] According to this configuration, the grease nipples 31 to 34 are exposed from at least one of the support pillar 7 and the cross member 9, so that the grease supplier X1 can be easily connected to the grease nipples 31 to 34. This makes it possible to easily supply grease to the rotating bodies 21, 22, 25, and 26.

[0064] [2] In addition, the loading platform lifting device 4 described above in [1] is, as in this embodiment, a cylindrical inner column 8 that is inserted into the support column 7 and moves in a vertical direction D3 relative to the support column 7; A slider 10 that 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, The support 7 includes a support slit 7b extending in the vertical direction D3 and inserted into the slider 10, The rotating body (in this embodiment, a second guide roller) 26 is connected to the upper end of the inner column 8 so as to be guided by the inner circumferential surface of the support 7, The grease nipple (in this embodiment, the third grease nipple) 33 is exposed from the support slit 7b. This configuration is preferred.

[0065] According to this configuration, the grease nipple (in this embodiment, the third grease nipple) 33 is exposed from the support post slit 7b, so that the grease supplier X1 can be connected to the grease nipple 33 via the support post slit 7b. This makes it possible to easily supply grease to the rotating body (in this embodiment, the second guide roller) 26.

[0066] [3] In addition, the loading platform lifting device 4 in the above [2] is, as in this embodiment, The tip of the grease nipple (in this embodiment, the third grease nipple) 33 is disposed between the inner peripheral surface and the outer peripheral surface of the wall (in this embodiment, the rear wall) 7a of the support 7 in the direction D1 in which the grease nipple 33 extends toward the tip (in this embodiment, the front-rear direction). This configuration is preferred.

[0067] According to this configuration, the grease nipple (in this embodiment, the third grease nipple) 33 does not extend to the outside of the support pillar 7, so that it is possible to prevent the grease nipple 33 from hitting an object outside the support pillar 7 when the inner column 8 moves in the vertical direction D3 relative to the support pillar 7. On the other hand, since the tip of the grease nipple 33 is disposed outward from the inner circumferential surface of the support pillar 7, it becomes easy to connect the grease supplying tool X1 to the grease nipple 33.

[0068] [4] In addition, the loading platform lifting / lowering device 4 of any one of the above items [1] to [3] may be, as in this embodiment, a cylindrical inner column 8 that is inserted into the support column 7 and moves in a vertical direction D3 relative to the support column 7; A grease collecting section 18 for collecting grease, The rotating bodies 21, 22, 25, and 26 are disposed inside the support 7 and outside the inner column 8, A base end portion 18a of the grease collecting portion 18 is fixed to one of the support pillar 7 and the inner column 8 (in this embodiment, the support pillar 7), The tip portion 18b of the grease collecting portion 18 contacts the other of the support column 7 and the inner column 8 (in this embodiment, the inner column 8). This configuration is preferred.

[0069] According to this configuration, the base end 18a of the grease collection portion 18 is fixed to one of the pillar 7 and the inner column 8 (in this embodiment, the pillar 7), and the tip end 18b of the grease collection portion 18 contacts the other of the pillar 7 and the inner column 8 (in this embodiment, the inner column 8), thereby preventing grease adhering to the outer peripheral surface of the inner column 8 from leaking from the pillar 7.

[0070] [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 grease nipples (in this embodiment, the second and fourth grease nipples) 32, 34 are disposed inside at least one of the support pillar 7 and the cross member 9, At least one of the pillar 7 and the cross member 9 has openings 7e, 7f that expose the grease nipples 32, 34. This configuration is preferred.

[0071] According to this configuration, at least one of the support pillar 7 and the cross member 9 has the openings 7e, 7f, so that the grease nipples (in this embodiment, the second and fourth grease nipples) 32, 34 are exposed by the openings 7e, 7f. This allows the grease supplier X1 to be connected to the grease nipples 32, 34 through the openings 7e, 7f. Therefore, grease can be easily supplied to the rotating bodies (in this embodiment, the upper sheave and the lower sheave) 21, 22.

[0072] [6] In addition, the loading platform lifting device 4 described in [5] above is configured as follows: A cover 17 is provided which is detachable from at least one of the pillar 7 and the cross member 9 and covers the opening (in this embodiment, the second opening) 7f. This configuration is preferred.

[0073] According to this configuration, the cover 17 is attached to at least one of the pillar 7 and the cross member 9, so that the cover 17 covers the opening (the second opening in this embodiment) 7f. This makes it possible to protect the grease nipple (the fourth grease nipple in this embodiment) 34.

[0074] Furthermore, by removing the cover 17 from at least one of the support pillar 7 and the cross member 9, the grease nipple 34 is exposed through the opening (the second opening in this embodiment) 7f. Therefore, the grease supplier X1 can be connected to the grease nipple 34 through the opening 7f, so that the grease can be easily supplied to the rotating body (the lower sheave in this embodiment) 22.

[0075] [7] In addition, in any one of the load-receiving platform lifting and lowering devices 4 described above in [1] to [6], as in this embodiment, The grease nipple (in this embodiment, the first grease nipple) 31 is disposed outside the support pillar 7 and the cross member 9. This configuration is preferred.

[0076] According to this configuration, the grease nipple 31 (in this embodiment, the first grease nipple) is disposed outside the support 7 and the cross member 9, so the grease nipple 31 is exposed. This allows the grease supplier X1 to be easily connected to the grease nipple 31, so that grease can be easily supplied to the rotating body (in this embodiment, the first guide roller) 25.

[0077] [8] In addition, vehicle 1 Any one of the load receiving platform lifting devices 4 described above in [1] to [7]; The loading platform 3 on which the loading platform lifting device 4 is attached is provided. This configuration is preferred.

[0078] With this configuration, the grease can be easily supplied to the rotors 21, 22, 25, and .

[0079] 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.

[0080] (A) In the load receiving platform lifting / lowering device 4 according to the above embodiment, the first grease nipple 31 is arranged outside the outer column 7 and the cross member 9, and is thereby exposed from the outer column 7 and the cross member 9. However, the load receiving platform lifting / lowering device 4 is not limited to this configuration.

[0081] For example, a configuration may be adopted in which no grease nipple is exposed from the outer column 7 and the cross member 9 by being disposed outside the outer column 7 and the cross member 9. Also, for example, a configuration may be adopted in which grease nipples other than the first grease nipple 31 are exposed from the outer column 7 and the cross member 9 by being disposed outside the outer column 7 and the cross member 9.

[0082] (B) In addition, in the load-receiving platform lifting / lowering device 4 according to the above embodiment, the second and fourth grease nipples 32, 34 are configured to be exposed through the openings 7e, 7f of the outer column 7 (cross member 9). However, the load-receiving platform lifting / lowering device 4 is not limited to such a configuration.

[0083] For example, a configuration may be adopted in which no grease nipples are exposed through the openings 7e, 7f of the outer column 7 (cross member 9). Also, for example, a configuration may be adopted in which grease nipples other than the second and fourth grease nipples 32, 34 are exposed through the openings 7e, 7f of the outer column 7 (cross member 9).

[0084] (C) In addition, in the load-receiving-table lifting / lowering device 4 according to the above embodiment, the third grease nipple 33 is configured to be exposed from the outer slit 7b. However, the load-receiving-table lifting / lowering device 4 is not limited to this configuration.

[0085] For example, a configuration may be adopted in which no grease nipple is exposed from the outer slit 7b, or a configuration may be adopted in which a grease nipple other than the third grease nipple 33 is exposed from the outer slit 7b.

[0086] (D) Furthermore, in the load receiving platform lifting / lowering device 4 according to the above embodiment, the tip of the third grease nipple 33 is arranged between the inner circumferential surface and the outer circumferential surface of the wall (rear wall) 7a of the outer column 7 in the direction (front-rear direction) D1 in which the third grease nipple 33 extends toward the tip. However, the load receiving platform lifting / lowering device 4 is not limited to this configuration.

[0087] For example, the third grease nipple 33 may extend to the outside of the outer column 7, that is, the tip of the third grease nipple 33 may be positioned outward from the outer peripheral surface of the outer column 7. Also, for example, the tip of the third grease nipple 33 may be positioned inward from the inner peripheral surface of the outer column 7.

[0088] (E) In addition, in the load receiving platform lifting device 4 according to the above embodiment, the second opening 7f is configured to be covered by the cover 17. However, the load receiving platform lifting device 4 is not limited to such a configuration. For example, all of the openings 7e, 7f may be configured not to be covered by the cover 17, i.e., all of the grease nipples exposed by the openings 7e, 7f may be configured to be continuously exposed.

[0089] (F) Furthermore, in the load receiving platform lifting / lowering device 4 according to the above embodiment, the base end 18a of the grease collection part 18 is fixed to the lower part of the outer column 7, and the tip end 18b of the grease collection part 18 is in contact with the outer peripheral surface of the inner column 8. However, the load receiving platform lifting / lowering device 4 is not limited to this configuration.

[0090] For example, a configuration may be used in which the base end 18a of the grease collection portion 18 is fixed to the upper portion of the inner column 8, and the tip end 18b of the grease collection portion 18 contacts the inner circumferential surface of the outer column 7. In such a configuration, even when the inner column 8 is positioned at a lower limit position relative to the outer column 7, the grease collection portion 18 is fixed to the inner column 8 such that the tip end 18b contacts the inner circumferential surface of the outer column 7. Also, for example, a configuration in which the grease collection portion 18 is not provided may be used.

[0091] (G) 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.

[0092] 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.

[0093] 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 not include the rotation mechanism 15.

[0094] (H) 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 27 rotatably connected to the slider 10 may be guided by the inner peripheral surface of the outer column 7.

[0095] (I) 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.

[0096] (J) 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, so 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 this order. [Explanation of symbols]

[0097] Reference Signs List 1...vehicle, 2...vehicle body, 2a...vehicle 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), 7c...right wall, 7d...left wall, 7e...first opening, 7f...second opening, 8...inner column, 8a...rear wall, 8b...inner slit, 8c...front wall, 8d...left wall, 8e...right wall, 9...cross member, 10...slider, 11...loading platform, 11a...first plate, 11b...second plate, 12...base, 13...lock pin, 14...turning machine structure, 14a...handle, 15...rotation mechanism, 16...driving source, 17...cover, 18...grease collection section, 18a...base end section, 18b...tip section, 21...upper sheave (rotating body), 22...lower sheave (rotating body), 23...fixed sheave (rotating body), 24...moving sheave (rotating body), 25...first guide roller (rotating body), 26...second guide roller (rotating body), 27...third guide roller (rotating body), 31...first grease nipple, 32...second grease nipple, 33...third grease nipple, 34...fourth grease nipple, 35...grease supply path, D1...front-rear direction, D2...left-right direction, D3...up-down direction, X1...grease supply tool

Claims

1. A pair of cylindrical supports extending in the vertical direction; A tubular cross member extending laterally and connecting the pair of pillars; A rotating body disposed inside at least one of the pillar and the cross member; a grease nipple connected to the rotating body for supplying grease to the rotating body; A load receiving platform lifting device, wherein the grease nipple is exposed from at least one of the support pillar and the cross member.

2. a cylindrical inner column that is inserted into the support and moves in a vertical direction relative to the support; 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, The support pillar includes a support pillar slit extending in the vertical direction and inserted into the slider, The rotating body is connected to an upper end of the inner column so as to be guided by an inner circumferential surface of the support column, The load-receiving platform lifting device according to claim 1 , wherein the grease nipple is exposed from the support column slit.

3. 3. The load-receiving platform lifting device according to claim 2, wherein a tip of the grease nipple is disposed between an inner peripheral surface and an outer peripheral surface of the wall of the support in a direction in which the grease nipple extends toward the tip.

4. a cylindrical inner column that is inserted into the support and moves in a vertical direction relative to the support; A grease collecting section that collects the grease, The rotating body is disposed inside the support column and outside the inner column, A base end portion of the grease collection portion is fixed to one of the support pillar and the inner column, The load-receiving platform lifting device according to claim 1 , wherein a tip end of the grease collecting portion is in contact with the other of the support pillar and the inner column.

5. The grease nipple is disposed inside at least one of the support pillar and the cross member, 2. The platform lifting device of claim 1, wherein at least one of the support column and the cross member includes an opening for exposing the grease nipple.

6. The load-receiving platform lifting device according to claim 5 , further comprising a cover that is detachable from at least one of the support column and the cross member and that covers the opening.

7. 2. The platform lifting device according to claim 1, wherein the grease nipples are disposed on the exterior of the support columns and the cross members.

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

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