JPS58212595A - Back rest structure of industrial car - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a backrest structure for an industrial vehicle.

Conventionally, as a forklift for handling tall loads such as rack pallets, the 7 Oakley 7 is equipped with a so-called high backrest 1, which is taller than the Shingen backrest, in front of the mast 2, as shown in Figure 1. ) F is known.

However, even if the forklift F is equipped with such a bank crest 1, the height of the bank crest cannot be made that high due to restrictions such as the entrance height and ceiling height of the warehouse. For example, as shown in Figure 2, cargo handling operations can be carried out in locations where the entrance height and ceiling height of a warehouse are sufficiently high, or in locations where there are no height restrictions, such as cargo handling operations outdoors.) 3 a e 3 b When attempting to improve the efficiency of cargo handling by carrying out two-tier loading and unloading, - the upper rack pallet 3b cannot be supported sufficiently by the Ipatuku Crest 1, so the The upper rack pallet 3b could easily shift or fall due to a slight movement when the rack was opened, making it impossible to ensure safe work.

The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to enable the height of the backrest to be adjusted according to cargo handling conditions, thereby ensuring safety in high-loading operations. This is what I did.

That is, as a means for achieving the above object, the present invention provides a backrest body comprising a base member, a movable member disposed on the base member so as to be movable up and down, and a drive mechanism for moving the movable member up and down. The gist of this is that it has a structure consisting of:

The present invention will be described in detail based on the embodiments shown in the accompanying drawings.

In the first embodiment of the present invention shown in FIGS. 3 to 5,
The backrest main body is composed of a base member 5 bolted to both ends of the finger nozzle 4, and a movable member 6 disposed on the pace member 5 for vertical movement.

The base member 5 is composed of a support T that supports the fifl of the luggage, and a pair of guide rails 8, 8 each having a U-shaped cross section and provided on both sides of the support I. At the upper position of the guide rails 8, there are rows 29, 9 rotatably supported on the guide rails 8, 8.
, 8 in the inner kite grooves 10, 10,
A mounting portion 12 is provided at the center of the lower end of the support body 1 to which the base of a hydraulic cylinder 11 serving as a drive mechanism for moving the movable member 6 up and down is mounted.

On the other hand, the movable member 6 is provided with a support 13 similar to that described above on the upper side of a substantially rectangular frame body, and guide walls 1B and 18 extending outward are provided on both side plates 14°14 along the longitudinal direction. In addition, rollers 15, 15 are pivotally supported at the F position. Further, a mounting portion 1T for fixing the tip end of the rod 16 of the hydraulic cylinder 11 is provided at the center of the lower end of the support body 13. Therefore, both side plates 1 of the movable member 6
4.14 is housed in the guide rails 8, 8 of the pace member 5, as shown in FIG. is in sliding contact with the row 29, and as shown in FIG. When moving the movable member 6 up and down along the guide rail 8 of the base member 5, the rollers 9 and 15 rotate, and the movable member 6 can be moved up and down smoothly. In addition, in FIG. 3, 30 is a fork fixed to the finger bar 4.

Next, the operation of the backrest structure according to the present invention will be explained based on FIGS. 3, 6, and 7.

First, let us consider the case where the rack pallets 3a are loaded in one layer and are operated.
is contracted, and the movable member 6 is lowered along the guide rails 8, 8 of the pace member 5.

In this state, the movable member 6 is moved to the guide rail 8 of the base member 5.
, 8, and the lower end of the support body 13 of the movable part shaver 6 and the support body 1αl ii1 portion of the pace member 5 are in substantially close contact with each other, so that the support bodies T and 13 form a continuous integral shape. Therefore, in this case, as shown in the sixth factor, the height of the backrest body becomes shorter, so one rack pallet 3at-
The height and height are suitable for climbing, and there is no risk that the upper part of the backrest will hit the warehouse or the ceiling.

Next, as shown in Figure @7, rack/(let 3m, 3
If we consider the case of cargo handling operation with two stacks of b.
In this case, the hydraulic cylinder 110 rod 16t is extended and the movable member 6 is raised along the guide rails 8, 8 of the base member 5.

In this case, as described above, the movable member 60 side plates 14.
The guide wall 18.18 of 14 rises while rolling the rollers 9, 9t of the guide rails 8, 8 on the side of the E1 member 5, and the roller Is of the movable member 6@; It rises while rolling on the front walls 8', 8' of 8. Therefore, the movable member 6 moves up smoothly and is prevented from wobbling, so that the support body 13 of the bj movable member 6 is held on the same plane as the support body 1 of the pace member 5.

Therefore, as shown in Fig. 7, in the case of cargo loading, two-tier loading operations can be carried out safely by moving the movable member 6t to the appropriate height to support the second-tier rack pallet 3b. This makes it possible to improve the efficiency of cargo handling operations in places where there is no height restriction, such as outdoors.

8 to 10 show a second embodiment of the present invention. For example, when the load such as a rack pallet 3 is tall and placed on two different levels, the backrest main body of the previous embodiment is used. This can be applied in cases where the height is insufficient and the backrest body needs to be made taller.

That is, in this embodiment, an auxiliary movable member 19 is interposed between the base member 5, which has substantially the same configuration as the backrest body described above, and the moving member 6, and the backrest body is divided into three parts. It is made up of several members, and uses a chain 20 in addition to the hydraulic cylinder 11 as a drive mechanism. As shown in FIG. 8, the auxiliary movable member 19 includes the movable member 60 side plates 14.
It is composed of a pair of left and right auxiliary guide rails 21 and 21 interposed between the auxiliary guide rails 21 and 21, and upper and lower connecting rods 22a and 22b that connect the auxiliary guide rails 21 and 21. The auxiliary guide rails 21, 21 have a shape in which guide walls 23, 23 extending in the longitudinal direction are provided on the outside of the channel-shaped member, and rollers disposed in the guide grooves 24, 24 are provided at the upper position. 25. 25, and a row 226 disposed outside the auxiliary guide rails 21, 21 at the lower position.
, 26 are respectively supported.

Therefore, the auxiliary guide rail 21 having such a configuration
, 21 All movable members 60 Both side plates 14.14 and pace member 5
When the guide rails 8 and 8 are interposed, the 9th
As shown in the figure'), the upper row 225 of the auxiliary movable member 19
In the i'' position, the guide wall 18 of the movable member 6 is in sliding contact with the roller 25, and the guide wall 23 of the auxiliary movable member 19 is in sliding contact with the roller 9 of the base member 5. - 10,000, auxiliary movable member 19
At the lower roller 26 position, as shown in FIG.
The front wall 21' of the auxiliary kite rail 21 comes into contact with the roller 15 provided on the movable member 6, and the -iJ wall 8' of the kite rail 8 of the pace member 5 comes into sliding contact with the roller 26. .

On the other hand, as shown in the eighth factor, the hydraulic cylinder 11 as a drive mechanism has its lower end fixed to the base member 5, and the tip of the rod 16 fixed to the intermediate part of the upper connecting rod 22 of the auxiliary movable member 19, and A chain 20, which has one end fixed to the mounting 7 flange 28 of the hydraulic cylinder 11 and the other end fixed to the lower end of the movable member 6, is wound around a chain wheel 2T pivotally supported on the upper part of the rod 16.

Therefore, in order to explain the operation of the backrest structure having the above configuration, first, when stacking rack pallets 3a in one stage, etc., the rod 16 of the hydraulic cylinder 11 is contracted and the auxiliary movable The member 19 and the movable member 6 are housed within the base member 5. In this case, the movable member 6 and the supports 13 and 7 of the base part @5
As in the previous embodiment, it has an integral shape that is vertically continuous.

Next, if you want to make the backrest body taller, the first
As shown in FIG. 2, the rod 16 of the hydraulic cylinder 11 is extended and the auxiliary movable member 19 is raised along the guide rail 8 of the base member 5.

In this case, as the rod 16 rises, the chain wheel 27 also rises, so the chain 20 is pulled to one side and the movable member 6 connected to one end of the chain 20 becomes an auxiliary guide for the auxiliary movable member 19. The movable member 6 rises along the rail 21 and extends above the auxiliary movable member 19. Therefore, in this case, it is possible to extend the movable member metal in two stages above the pace member 5, so that the back of the backrest body can be formed even more.
For example, tall rack barre) 3a.

3b, two-tiered cargo projection and other operations can be performed safely. Note that the backrest body is extended. In this case, the distance between each kite rail 8.21 of the base member 5 and the auxiliary movable member 19 is regulated by both rollers 9.26, and the distance between the side plate 14 of the i'' moving part @6 and the guide rail 21 of the auxiliary movable member 19 is regulated by both rollers 9.26. Since the distance between the two rows is restricted to 215° 25, the auxiliary movable member 19 and the movable member 6 are prevented from wobbling.

As explained above, according to the backrest structure according to the invention, the height of the backrest body is adjusted by adjusting the height of the backrest body to correspond to the work conditions, etc.
In addition to being able to perform stacking operations more safely than conventional methods, it is also possible to improve work efficiency.

Furthermore, the loose wood structure of the present invention has the advantage that it can be widely applied to industrial vehicles such as forklifts.

[Brief explanation of drawings]

Fig. 1 is a side view of a forklift showing a conventional pack rest structure, Fig. 2 is a side view of the forklift during cargo handling operation, Fig. 3 is an exploded perspective view showing a conduit-implementation row of the present invention, Fig. 4 and Fig. 5 is an explanatory diagram showing the connected state of the pace member and the movable member, Figs. 6 and 7 are explanatory diagrams of the operating state of the backrest, and Fig. 8 is an exploded perspective view showing the second embodiment of the present invention. , FIG. 9 and FIG. 10 are explanatory views showing the connected state of the pace member, the auxiliary movable member, and the movable member, and FIGS. 11 and 12 are explanatory views of the operating state of the backrest. F...Forklift 5...Pace member 6...
Movable member, 11... Hydraulic cylinder 19...
・Auxiliary movable member 20...Chain patent applicant
Nissan Motor Co., Ltd. Representative Patent Attorney Kaoru Dobashi 11th! A! J 4th concave s6 flash 9th momme 10th figure 1v figure

Claims (1)

[Claims] A backrest structure for an industrial vehicle comprising a backrest main body comprising a base member, a movable member disposed on the base member so as to be movable up and down, and a drive mechanism for raising and lowering the movable member.