JP3028131U - Sloping bridge - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To enable a forklift to easily cross a joint between a loading platform and a tilting bridge regardless of the load on the loading platform in a tilting bridge for a forklift. SOLUTION: The inclined bridge 1 used when loading and unloading a load on a loading platform 6 slightly higher than a loading place by a forklift.
At the front end, a crossover plate 14 having a lateral width slightly narrower than the lateral width of the loading platform 6 and pivotable from a posture inclining downward by a predetermined angle to a posture inclining rearward upward is provided. Then, the front end of the sloping bridge having the crossover plate 14 in the upward posture is brought into contact with the rear end of the loading platform 6 and coupled so as not to separate from each other, and then the crossover plate 14
If the front legs 7b are adjusted so that the pallet is oscillated downward and placed on the luggage carrier and the pallet plate is almost horizontal when the pallet carrier 6 is empty, the trolley plate Both oscillate downward and incline, and a forklift can pass smoothly without forming a step between the rear end of the loading platform 6 and the front end of the inclined bridge 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention, when loading and unloading a large number of heavy loads to a place slightly higher than the ground, such as a load of a sea container loaded on a large truck or trailer, bridges between the ground and the load. This is related to the improvement of a sloping bridge where a forklift can move by itself.

[0002]

[Prior art]

 In order to load a large number of loads onto a wide loading platform such as a maritime container loaded on a large truck or trailer, it is necessary to load loads in order from the back of the loading platform, so when using a sloping bridge and forklift, It is necessary to smoothly load the forklift onto the loading platform, and for that purpose the front end of the sloping bridge must be close to the rear edge of the loading platform so that it is at the same height. Is also the same.

Therefore, conventionally, the height-adjustable legs that support the front part of the tilted bridge make the front end flush with the rear end of the loading platform, and the end of the chain provided at the front end of the tilting bridge is attached to the loading platform. The front ends of the side frame rods for preventing the forklift sideways falling, which are provided on both side edges of the sloping bridge and project upward from the forklift traveling surface, are placed on the cargo bed and tilted. The bridge was stable and safe.

Further, in other types of sloping bridges, the front end of the sloping bridge is placed on the rear part of the loading platform to connect the two, and in order to maintain the connection, the front end of the sloping bridge is connected as in the previous example. The end of the chain provided at the end is temporarily fixed to the rear part of the loading platform to maintain the connection between the two.

[0005]

[Problems to be solved by the device]

 However, in the former example, if the loading platform is a loading platform supported by a spring-type cushioning means, such as a loading platform or trailer of an automobile, if the load on the loading platform increases, the loading platform will be loaded due to its weight. The load gradually drops and a step is created between the bridge and the forklift, making it difficult to move the forklift forward or backward, or the load on the forklift may fall due to the impact when passing through the step. In order to avoid these accidents, conventional tilted bridges were often troublesome because the height of the front legs had to be adjusted during work.

[0006] Furthermore, since the front end of the side frame rod for preventing lateral fall of the forklift, which measures traveling safety of the forklift, is placed on the luggage carrier, the side frame rod is used for loading and unloading loads on both sides of the luggage carrier. It may be an obstacle and in some cases it may not be possible to load or unload cargo.

Also in the latter example, if the loading platform is supported by a spring system, the weight applied to the front end of the inclined bridge is the total weight supporting the front end of the inclined bridge, and this weight is The vibration of the forklift traveling on the sloping bridge is transmitted to the loading platform, and the loading platform supported by the spring system receives the vibration to cause an abnormal vibration. There is a risk of disconnection. To prevent this, increase the engagement depth between the rear end of the platform and the front end of the inclined bridge to make it difficult to disengage, increase the strength of the chain, and strengthen the connection. However, if there are no accidents, the chain will be forgotten and the risk of an accident cannot be avoided.

[0008]

[Means for Solving the Problems]

 According to the present invention, the above-mentioned problems are solved as follows. (1) At the front end of a sloping bridge used when loading and unloading a load platform that is slightly higher than the ground by a forklift, the lateral width is the width of the load platform through a plurality of support plates that extend through a pivot that points in the left-right direction. A bridge plate that is slightly narrower than the above and is swingable from a downward tilted posture to an upward tilted posture after being tilted upward, and at the same time, the lower surface of the bridge plate is flush with the support plate. By making a tilted bridge with fixed stop plates that stop at the required downward tilt. (2) The crossover board described in the item (1) is divided into a plurality of laterally-arranged sheets. (3) By making the inner width of the front part of the inclined bridge body described in (1) or (2) wider than the inner width of the cargo bed.

[0009]

[Action]

 In the tilted bridge of the present invention, the rear end of the tilted bridge with the crossing plate in the upward posture is brought into contact with the rear end of the loading platform so as not to separate them, and then the crossing plate is swung downward to be mounted on the loading platform. If the front legs are adjusted so that the crossover plate is almost horizontal when the load platform is empty, even if the load platform is lowered due to a load, the crossover plate will swing downwards and tilt, and the rear end of the load platform will be tilted. There is no step between the front of the inclined bridge and the front end of the inclined bridge, and the forklift can pass smoothly.

This action is the same when unloading a load from a bed full of loads, and there is no need to adjust the height of the front legs of the sloping bridge during loading / unloading work, and during work Even if the loading platform and the sloping bridge are separated due to the above, it is safe because the transition plate covers the gap.

The cross plate is thick and heavy so as to withstand the load of the forklift, and when it is not used, it must be in an upright standby position.However, even if the inclined bridge is pulled away from the platform, the cross plate does not hang downward. The work is easy, and if it is divided into a plurality of sheets as a more preferable example, it becomes easier.

[0012]

【Example】

 The drawings show an embodiment of the present invention. As shown in FIGS. 1 and 2, the side walls (2), which are provided on the left and right sides of the inclined bridge main body (1) and which extend forward and backward, have a vertical structure. A side plate (3) facing the direction is stretched, and a forklift (not shown) is run on the upper surface of the crosspiece (4a) assembled to the girder between the left and right side frames (2) (2). A running plate (4) made of expanded metal is stretched.

On the upper surfaces of the side plates (3) of the left and right side frames (2), the side plates (3) of the left and right side frames (2) are projected slightly above the traveling plates (4) so as to partition the both sides of the traveling plate (4) so that the forklift laterally falls. A guide rod (5) for preventing is provided.

The traveling plate (4) includes a horizontal portion (4A) at the front portion (left portion in FIG. 1) and a downward slant portion (4B) at the rear portion which is longer than the horizontal portion (4A), and the horizontal portion (4A) is It is wider than the ramp (4B) and slightly wider than the truck bed (6).

A pair of left and right front legs (7) are vertically installed on the front portions of the lower surfaces of the side frames (2), and the front legs (7) are fitted on the fixed legs (7a) vertically installed on the side frames (2). The height of the main body (1) of the inclined bridge can be adjusted by the combination of the swinging legs (7b). A pair of left and right front wheels (8) are pivotally mounted on the rod (7c), and both front wheels (8) come into contact with the ground when the front legs (7) are shortened.

[0016] At the center of the lower surface of the main body (1), one end is projected from the center of the horizontal rod of the crosspiece (4a) spanned between the side frames (2), with one end projecting forward. Rear wheels (10) are pivoted at the free ends of a pair of left and right rear legs (9) pivotally installed at the rear wheels (10), and both rear wheels (10) are appropriately suspended between the side frames (2). It is moved up and down by an oil cylinder (11) whose one end is fixed to the crosspiece (4a).

As shown in FIGS. 3 to 5, the crosspiece (4a) hung between the two side frames (2) is provided with a front projection on the front end face of the lateral rod (4a ′) at the front end, etc. On the upper side of eight support plates (12), which are arranged side by side with a space, and whose front ends are inclined slightly rearward and downward, a pivot (13) oriented in the left-right direction is penetratingly provided.

On the pivot (13), a pair of left and right laterally extending cross-pieces (14) of the same size and the same size are provided to the base end of the lower surface of the same, and are substantially the same size as the support plate (12). By externally fitting the plate (15) on the side surface of the support plate (12) so as to overlap with it, the plate (15) is pivotally provided so as to be flush with the running plate (4) when it is horizontal.

The outer edges of the two bridging plates (14) are slightly laterally inclined toward the free ends, and the distance between the outer edge bases is slightly smaller than the inner width of the cargo bed (6). Has become.

When the crossing plate (14) is tilted downward by a predetermined angle downward to the surface of the lower surface of the two crossing plates (14) that overlaps with the support plate (12) of the pivot support plates (15), the rear end face is supported. A stop plate (16) is fixedly installed on the front end surface of the plate (12) to stop the swing of the transition plate (14).

During the waiting period for the sloping bridge, each crossing plate (14) is swung upward and tilted slightly rearward as shown by the phantom line in FIG. It is fixed by.

In order to load the empty platform (6) using the inclined bridge having the above-mentioned configuration, the front leg (7) of the waiting inclined bridge is shortened and the oil cylinder (11) is extended. The front wheel (8) is grounded, the rear end of the traveling plate (4) is slightly separated from the surface of the ground, and the front and rear wheels (8) and (10) are driven to move the front end of the inclined bridge body (1). Close to the rear end of the loading platform (6).

Then, the front leg (7) and the oil cylinder (11) are adjusted so that the front end of the traveling plate (4) is at the same height as the loading platform (6), and the chain ( 17) Connect the inclined bridge main body (1) and the loading platform (6) so as not to separate them.

Then, as shown by the solid line in FIG. 4, when the crossover plate (14) is tilted forward, the crossover plate (14) rides horizontally on the loading platform (6) and covers a slight gap between the two, so that the forklift is A load can be loaded on the back side of the loading platform (6) by passing over the crossing plate (14).

The load carrier (6) provided with a spring-type buffering means of an automobile or the like gradually lowers the height of the load carrier due to its weight as the load loaded increases, but as shown by a phantom line in FIG. In addition, since the crossing plate (14) also swings and tilts downward due to its own weight, and there is no step between the inclined bridge main body (1) and the loading platform (6), the front leg (7) and The forklift can be passed easily without operating the oil cylinder (11) and adjusting the height of the inclined bridge body (1), and there is no rocking or impact when passing.

Even if the chain (17) is loosened due to rocking during work and the inclined bridge body (1) and the cargo bed (6) are slightly separated, a gap between them is provided by the crossover plate (14) that is deeply laid. It is safe without the risk of

When the loading is finished, the front wheel (8) of the sloping bridge may be grounded as it is and returned to the waiting position. At this time, the crossing plate (14) comes off from the loading platform (6), but as shown in FIG. As shown in the figure, it does not hang downward due to the action of the stop plate (16), and since the transition plate (14) is divided into two parts, it is small and lightweight and can be easily returned to the upward waiting position shown by the phantom line in FIG. be able to.

When unloading from the loading platform (6) full of loads, the rear end of the inclined bridge body (1) is made higher than the loading platform (6) by a predetermined value in advance, and as shown in FIG. If (14) is slanted downward on the platform (6), it is not necessary to adjust the height of the inclined bridge body (1) during the unloading work.

Further, since the inner width of both guide rods (5) of the inclined bridge body (1) is slightly wider than the inner width of the loading platform (6), it is possible to load and unload loads on both sides of the loading platform (6). In this case, the front end of the guide rod (5) does not get in the way, and when loading, it is possible to load without creating unnecessary space on both sides of the loading platform (6). Can easily carry the load on both sides of the loading platform (6).

Although the number of the transition plates (14) is two in the above-mentioned embodiment, it may be three or more. In this case, the structure is complicated and expensive, but the operation of the heavy transition plates (14) is more effective. It will be easy.

[0031]

[Effect of device]

 In the slanted bridge of the present invention, a cross plate is pivotally installed at the front end of the slanted bridge main body from a posture of inclining downward by a predetermined angle to an upward posture of slightly inclining rearward. If the crossing plate is laid close to the rear end of the loading platform when it is empty and the crossing plate is hung over the loading platform, even if the loading platform moves up and down due to the increase or decrease of the load on the loading platform, the crossing plate will adapt and swing. Since there is no step between the main body of the sloping bridge and the platform, and even if they are separated for some reason, the crossover plate covers them, the forklift can easily and safely move in and out of the platform. At that time, since there is no shock, loading and unloading can be performed easily and safely.

Further, even if the sloping bridge after loading and unloading work is separated from the loading platform as it is, the heavy siding plate does not hang downward due to the action of the stop plate, so the work to return the siding plate to the upward waiting position can be performed. It's easy. Further, if the crossover plate is divided into a plurality of pieces, this work becomes easier.

If the inner width of the front part of the sloping bridge main body is made slightly wider than the inner width of the loading platform, the front part of the guide rod of the sloping bridge main body does not get in the way, and it is easy to load and unload loads on both sides of the loading platform. Becomes

[Brief description of drawings]

FIG. 1 is a side view of a sloping bridge of the present invention.

FIG. 2 is a plan view of the inclined bridge of the present invention.

FIG. 3 is a partially omitted enlarged arrow view of line AA in FIG.

FIG. 4 is a partially omitted enlarged view of a portion shown in FIG. 1B at the time of starting loading.

FIG. 5 is a view corresponding to FIG. 4 in which the crossover plate is in the lowest descent state.

[Explanation of symbols]

 (1) Sloping bridge body (2) Side frame (3) Side plate (4) Travel plate (4a) Crosspiece (4a ') (7c) Horizontal rod (4A) Horizontal part (4B) Sloped part (5) Guide rod ( 6) Platform (7) Front leg (7a) Fixed leg (7b) Swing leg (8) Front wheel (9) Rear leg (10) Rear wheel (11) Oil cylinder (12) Support plate (13) Axis (14) Cross plate (15) Pivot plate (16) Stop plate (17) Chain

Claims (3)

[Scope of utility model registration request] 1. A forklift having a lateral width at the front end of a sloping bridge used for loading and unloading a tongue or the like slightly higher than the ground by a forklift through a plurality of support plates provided with a pivot extending in the left-right direction. The width of the bridge plate is slightly narrower than the lateral width of the bridge plate and is swingable from a downward tilted posture to a slightly tilted backward tilted posture. A sloping bridge in which a stop plate is fixed to stop with the downward inclination at the required angle. 2. The sloping bridge according to claim 1, wherein the crossing plate is divided into a plurality of side-by-side rows. 3. The sloping bridge according to claim 1, wherein an inner width of a front portion of the sloping bridge main body is wider than an inner width of the loading platform.