JPH07285767A - Dumb-waiter level buffering device - Google Patents

Abstract

PURPOSE:To facilitate carriage of a truck in and out of a car by relaxing an impact on the truck even when a difference in level is produced between a car floor and a landing floor is produced. CONSTITUTION:A case wherein a truck 2 is pushed by a utilizer and passes through a landing floor and a car floor 1a and carried in a car 1 is assumed. Even in a case a difference in level H3 is produced between the car floor la and the landing floor owing to a defective level, when the wheels 5 of the truck 2 pass the landing roller L2 and a car roller L1, stumbling of the wheels 5 is prevented from occurring through rotation of the rollers L1 and L2 and the truck is smoothly carried in the car. When the truck 2 is carried out from the car 1, the truck is carried out in a similar manner described above, and the influence by the deference in level is eliminated through rotation of the rollers L1 and L2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dam waiter level shock absorber, and more particularly to a step difference shock absorber when a level difference occurs between a car floor and a landing floor.

[0002]

2. Description of the Related Art FIG. 26 shows the overall construction of a conventional dam waiter. In the figure, 1 is a car, 1a is a car floor, 2 is a dolly, 4 is a landing floor, and 5 is a wheel of the dolly. When a user unloads luggage on the trolley 2, the unloading is performed on the car 1 from the hall floor 4 on the car floor 1a.

[0003]

However, in the conventional dam waiter, when a step H3 is generated between the landing floor 4 and the car floor 1a, the wheels 5 of the truck 2 are caught in the step and the luggage on the truck 2 collapses. There were problems such as.

The present invention has been made to solve the above-mentioned conventional problems, and even if there is a difference in level between the landing floor and the car floor (level failure) and there is a step, the car can be easily carized. It is to provide a dam waiter level shock absorber that can be carried in and out.

[0005]

In order to achieve the above object, a dam weight level shock absorber according to claim 1 is provided at a car floor end of a dam waiter, and its rotating portion projects from a floor surface. It is characterized in that it has one roller and a second roller provided at an end portion of the landing floor of the dam waiter facing the car floor end portion, and the rotating portion thereof projects from the floor surface.

In order to achieve the above object, a dam weight level shock absorber according to a second aspect of the present invention is the dam weight level shock absorber according to the first aspect, wherein the surface of the first roller or the second roller is At least one is covered with a cushioning member.

In order to achieve the above object, the dam waiter level shock absorber according to claim 3 is the dam waiter level shock absorber according to claim 1, wherein the first roller is vertically movable. It is characterized by being supported by an elastic member.

In order to achieve the above object, the dam waiter level shock absorber according to claim 4 is the dam waiter level shock absorber according to claim 1, wherein the first roller is movable in the front-rear direction. It is characterized by being supported by an elastic member.

In order to achieve the above object, the dam waiter level shock absorber according to claim 5 is the dam waiter level shock absorber according to claim 1, wherein the first roller is arranged at the front and rear sides. It is characterized in that it is composed of two rollers, and the roller arranged on the front side is supported by an elastic member so as to be movable in the vertical direction.

Further, in order to achieve the above object, the dam waiter level shock absorber according to claim 6 is the dam waiter level shock absorber according to claim 1 or claim 3 or claim 4. The roller is characterized by being composed of two rollers arranged on the left and right.

[0011]

In the dam waiter level shock absorber according to the first aspect of the present invention, rollers are provided at opposite ends of the landing floor and the car floor, respectively, and these rollers reduce the influence of the step. That is, even when there is a step difference between the car floor and the landing floor, the wheels of the carriage come into contact with the first roller provided at the end of the car floor, and the first roller rotates, so that the first roller easily moves onto the first roller. It is possible to get on and to carry it into the car easily.

In the dam waiter level shock absorber according to the second aspect of the present invention, a shock absorbing member such as rubber is coated on the surface of either or both of the first roller and the second roller, and even if the wheels of the bogie contact the bogie. It can absorb the shock received by and prevent the luggage from collapsing.

In the dam weight level shock absorber according to the third aspect of the present invention, the first roller is provided so as to be vertically movable. As a result, when the wheels of the truck contact the first roller, the first roller moves downward to reduce the impact on the truck.

In the dam waiter level shock absorber according to the present invention, the first roller is provided so as to be movable back and forth. This also alleviates the impact on the truck when the wheels of the truck contact the first roller.

According to another aspect of the dam waiter level shock absorber, the first roller is composed of two rollers arranged at the front and rear, and the front roller is provided so as to be vertically movable.
Therefore, even if there is a large step between the car floor and the landing floor, these two rollers substantially eliminate the step, and the car can be easily carried into the car.

According to another aspect of the dam weight level shock absorber, the first roller is composed of two right and left rollers. As a result, even if the trolley has four wheels, the left and right wheels of the trolley come into contact with the two left and right rollers and rotate, so that the influence of the step can be reduced.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. The same members as those of the conventional device are designated by the same reference numerals, and the description thereof will be omitted.

First Embodiment FIG. 1 shows the overall construction of this embodiment. Basket floor 1
A roller L1 is provided at the end of a, and a roller L2 is provided at the end of the landing floor 4. FIG. 2 shows an enlarged view of these rollers L1 and L2. Roller L1
Is rotatably fixed to the car floor by the roller shaft S1 and the bearing 3a, and the roller L2 is rotatably fixed to the landing floor 4 by the roller shaft S2 and the bearing 3b. The roller L1 is fixed so that its top part projects from the car floor 1a by H1 and the roller L2 is fixed so that its top part projects from the landing floor 4 by H2. This allows the dolly to pass smoothly. 3 is a front view of the car 1 and the landing, and FIG. 4 is a front view of only the car 1. A roller L1 is provided at the tip of the car floor 1a, and a roller L2 is provided at the tip of the landing floor 4. FIG. 5 shows the details of the roller L1 and, as described above, the bearing 3
The roller shaft S1 is attached to the car floor 1a via a. Further, as shown in FIG. 6, both ends of the roller shaft S1 are stepped and partially threaded.

The configuration of this embodiment is as described above, and its operation will be described below with reference to FIG. It is assumed that the user pushes the dolly 2 and carries it into the car 1 through the hall floor and the car floor 1a. Even if a level difference H3 occurs between the car floor 1a and the landing floor due to a poor level, the wheels L1 and L2 rotate when the wheels 5 of the carriage 2 pass over the landing roller L2 and the car roller L1. The stumbling block of 5 is eliminated, and the dolly can be carried into the car smoothly. The same applies when the cart 2 is carried out from the car 1, and the influence of the step is caused by the roller L.
It is solved by the rotation of 1 and L2.

Second Embodiment In the structure of FIG. 1, as shown in the plan view of FIG. 8 and the sectional view of FIG. 9, a cushioning material G such as rubber is formed on the surface of the car roller L1.
Can be wound around to reduce the impact on the truck 2 when the wheels 5 of the truck 2 contact the roller L1. The cushioning material G may be wound around the surface of the landing roller L2. This makes it possible to reduce the impact on the dolly even when the dolly is unloaded.

Third Embodiment Also in this embodiment, the car roller L is used as in the first embodiment.
Although 1 and the landing roller L2 are provided, the car roller L1 is vertically movable in this embodiment. That is, FIG.
0 and a vertically long mounting hole 1 on the car floor 1a as shown in FIG.
b is provided, and a leaf spring 1 is provided at an intermediate portion and a lower side of the car roller L1.
c is arranged, and the leaf spring 1c constantly urges the roller L1 upward. As a result, the wheels 5 of the carriage 2 are moved to the roller L1.
When the roller L1 comes into contact with the carriage, the roller L1 moves downward to reduce the impact on the carriage, so that the carriage can be carried in more smoothly.

Fourth Embodiment In the third embodiment, the roller L1 is biased upward by the leaf spring 1c, but as shown in FIGS.
The winding springs 1d may be provided on the lower side of the left and right sides of the to energize.
Also in this case, when the wheel 5 of the carriage 2 comes into contact with the roller L1, the roller L1 moves downward, the impact on the carriage is relieved, and the carriage can be carried in more smoothly.

Fifth Embodiment In the third and fourth embodiments, the roller L1 is vertically movable, but in this embodiment, the roller L1 is movable back and forth. FIG. 14 is a view of the car 1 seen from above, and FIG. 15 is a sectional view. A horizontally long mounting hole 1b is provided in the car floor 1a, and a leaf spring 1c is arranged on the inner side of the roller L1 in the middle portion thereof.
The roller L1 is urged in the forward direction, that is, the inlet direction by c. As a result, when the wheel 5 of the carriage 2 comes into contact with the roller L1, the roller L1 moves in the depth direction, the impact on the carriage is mitigated, and the carriage can be carried in more smoothly.

Sixth Embodiment In the fifth embodiment, the roller L1 is biased toward the entrance by the leaf spring 1c, but as shown in FIGS.
A winding spring 1d may be provided to the left and right of 1 to urge it. Also in this case, when the wheel 5 of the carriage 2 comes into contact with the roller L1, the roller L1 moves in the depth direction, the impact on the carriage is relieved, and the carriage can be carried in more smoothly.

Seventh Embodiment Although the number of the car rollers L1 is one in each of the above-mentioned embodiments, as shown in FIGS. 18 and 19, two car rollers L1 and L3 can be arranged in front of and behind, that is, in the depth direction. it can.
Then, as shown in FIG. 19, a roller L1 on the front side, that is, on the inlet side is provided in the vertically long mounting hole 1b so as to be vertically movable by a winding spring 1d. As a result, when the wheel 5 of the carriage 2 comes into contact with the roller L1 on the front side, the roller L1 moves downward to mitigate the impact on the carriage, and further the roller L3 rotates to advance the wheel 5 of the carriage 2. By assisting
Even if there is a large difference in level between the car floor 1a and the landing floor 4a, it is possible to smoothly carry in and out the carriage.

Eighth Embodiment In the seventh embodiment, two car rollers are provided at the front and rear, but FIG.
0 and two car rollers L4 and L5 as shown in FIG. 4 wheels of trolley 2
In the case of wheels, since the wheels 5 actually come into contact with the rollers only partially, the rollers L4 and L5 are provided only at the places where the wheels 5 of the carriage 2 will come into contact with each other. The same effect as the embodiment can be obtained.

Ninth Embodiment In the eighth embodiment, the two car rollers provided on the left and right sides are of a fixed type, but as shown in FIGS.
It is also possible to provide a coil spring 1d on b so as to be movable up and down. Even in this case, the same effect as the fourth embodiment can be obtained.

Further, in this embodiment, the left and right rollers L4,
Since L5 can move up and down independently, the impact can be independently mitigated on the left and right even if the load distribution of the truck 2 is not even on the left and right, and the collapse of the load can be effectively prevented.

Tenth Embodiment In the ninth embodiment, the rollers provided on the left and right are movable up and down, but as shown in FIGS. 24 and 25, the rollers L4, L
5 can be attached to the diagonal mounting hole with a winding spring 1d so that it can be moved diagonally inward. Even in this case, it is possible to reduce the impact on the dolly independently.

[0030]

As described above, according to the dam waiter level shock absorbers of the first to sixth aspects, even when there is a step between the car floor and the landing floor, the impact on the carriage is prevented. It can be relaxed and carried in and out of the car easily.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a first embodiment of the present invention.

FIG. 2 is a sectional view of the same embodiment.

FIG. 3 is a front view of the car and the landing of the embodiment.

FIG. 4 is a front view of the car according to the embodiment.

FIG. 5 is a detailed view of a roller L1 of the same embodiment.

FIG. 6 is a detailed view of a roller L1 of the example.

FIG. 7 is an operation explanatory diagram of the embodiment.

FIG. 8 is a detailed view of a roller L1 according to a second embodiment of the present invention.

FIG. 9 is a sectional view of a roller L1 of the same example.

FIG. 10 is a perspective explanatory view of a third embodiment of the present invention.

FIG. 11 is a sectional view of the embodiment.

FIG. 12 is a perspective explanatory view of a fourth embodiment of the present invention.

FIG. 13 is a sectional view of the embodiment.

FIG. 14 is a plan view of a fifth embodiment of the present invention.

FIG. 15 is a sectional view of the embodiment.

FIG. 16 is a plan view of a sixth embodiment of the present invention.

FIG. 17 is a sectional view of the embodiment.

FIG. 18 is a plan view of a seventh embodiment of the present invention.

FIG. 19 is a cross-sectional view of the same example.

FIG. 20 is a plan view of an eighth embodiment of the present invention.

FIG. 21 is a cross-sectional view of the same example.

FIG. 22 is a plan view of the ninth embodiment of the present invention.

FIG. 23 is a cross-sectional view of the same example.

FIG. 24 is a plan view of a tenth embodiment of the present invention.

FIG. 25 is a cross-sectional view of the same example.

FIG. 26 is an explanatory diagram of level differences.

[Explanation of symbols]

 1 car 1a car floor 2 dolly 4 landing L1, L2, L3, L4, L5 roller G cushioning material

Claims (6)

[Claims] 1. A dam weight level buffer device for buffering a level difference between a car floor of a dam waiter and a landing floor, the first roller being provided at a car floor end of the dam waiter and having its rotating portion protruding from the floor surface. And a second roller provided at an end portion of the landing floor of the dam waiter facing the car floor end portion, the rotating portion of which protrudes from the floor surface, and a dam waiter level shock absorber. 2. The dam waiter level shock absorber according to claim 1, wherein at least one of the surfaces of the first roller and the second roller is covered with a shock absorbing member. 3. The dam waiter level shock absorber according to claim 1, wherein the first roller is supported by an elastic member so as to be vertically movable. 4. The dam waiter level shock absorber according to claim 1, wherein the first roller is supported by an elastic member so as to be movable in the front-rear direction. 5. The dam waiter level shock absorber according to claim 1, wherein the first roller is composed of two rollers arranged in front and rear, and the roller arranged on the front side is an elastic member that is vertically movable. A dam waiter level shock absorber characterized by being supported by. 6. Claim 1 or claim 3 or claim 4.
The dam waiter level shock absorber according to claim 1, wherein the first roller is composed of two rollers arranged on the left and right.