JPH0717196B2 - Movable trolley - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable carriage and, more particularly, to a movable carriage for preventing danger.

[0002]

2. Description of the Related Art Conventionally, as a movable carriage, for example, a mounting table is attached so as to be slidable when it moves on the track and separates from the track integrally with a traveling table that moves on the track. There is one in which an elastic member is provided at each end of a table and a traveling table (see Japanese Utility Model Publication No. 58-45723).

In this movable cart, when the table on which the article is placed is manually lifted up onto the track, the restoring force of the elastic member is utilized to reduce the load burden on the hand.

[0004]

However, in the above-mentioned movable carriage, when the article on the mounting table is removed, the mounting table suddenly rises due to the restoring force of the elastic member, and the worker is damaged. There was a problem.

An object of the present invention is to provide a movable carriage made to solve the above conventional problems.

[0006]

In order to achieve the above object, in a movable carriage of the present invention, a traveling platform that moves on a track and a track that moves integrally with the traveling platform on the track. And a resilient member having one end mounted on the mounting table side and the other end mounted on the traveling table side, the mounting table being mounted so as to be slidable in the vertical direction when detached from When an article is loaded on the writing table, it does not interfere with the vertical sliding of the writing table, and when no article is loaded on the writing table, the article moves upward in the writing table. And a rising movement blocking member for blocking the above.

Further, in the movable carriage of the present invention, the traveling platform moving on the track, and the traveling platform integrally moving with the traveling platform on the track, and when the vehicle departs from the track, is slidable in the vertical direction. Mounted on the mounting table for mounting the article, an elastic member having one end on the side of the mounting table and the other end mounted on the side of the traveling table, and is moved by being pushed by the article on the mounting table. A detection member that returns to its original position by an urging member when the article is removed and detects the presence or absence of the article; and an operation that receives the movement of the detection member at one end side and transmits the movement to the other end side. On the side of the traveling table so that the other end of the operating member opposes only when the member and the mounting table slide downward and move to the lowest position and the detection member returns to the original position. And a stopper body arranged.

[0008]

When the traveling table and the mounting table of the movable carriage configured as described above move on the track and the mounting table separates from the end of the track, the weight of the article on the mounting table causes the mounting table to act as an elastic member. It descends against the biasing force.

When an article is removed from the mounting table while the mounting table is lowered, the urging force of the elastic member attempts to raise the mounting table, but the upward movement blocking member prevents upward movement of the mounting table. It

When the article is placed on the placing table again and the placing table is returned to the predetermined position on the track, the placing table on which the article is placed is lifted. At this time, the urging force of the elastic member is increased in the lifting direction. To work.

The mounting table is lifted to a predetermined position and pushed toward the track to mount the mounting table on the track.

Further, when the traveling table and the mounting table of the movable carriage configured as described above move on the track and the mounting table separates from the tip of the track, the weight of the article on the mounting table causes the mounting table to be elastic. It descends against the biasing force of the member.

When the mounting table is lowered, the detection member is
The article on the mounting table is pushed and moved, and by this movement, the other end side of the actuating member does not face the stopper body, so there is no hindrance to the lowered state.

When the article is removed from the placing table with the placing table lowered and moved to the lowest position, the placing table tries to rise due to the urging force of the elastic member, but the detecting member returns to the original position. Since the other end side of the operating member faces the stopper body, the other end side of the operating member comes into contact with the stopper body and the upward movement of the mounting table is prevented after the mounting table is slightly raised.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A movable carriage according to an embodiment of the present invention will be described with reference to the drawings. In FIGS. 1 to 7, 1 is a movable carriage, and the movable carriage 1 is a vehicle such as a small fire engine ( It is mounted on a vehicle (not shown) to facilitate the loading and unloading of relatively heavy articles 4 (for example, a portable pump of about 80 kg to 90 kg) from the vehicle, and is generally on a track 2 attached to the vehicle. And a traveling platform 3 that moves along the traveling platform 3 and travels on the track 2 and separates from the orbit 2 in the vertical direction (the “vertical direction” means a direction having a slight inclination as shown in FIG. 1). It also includes, and as a result slides, the article 4
Any direction may be used as long as it is conveyed downward. ) And a mounting table 5 on which the article 4 (for example, a portable pump) is mounted.

Reference numeral 3a is a frame body of the traveling table 3, and rollers 3b, 3c and 3d are attached to the frame body 3a, and sliding portions of the mounting table 5 are provided by the rollers 3b and 3c. When moving on the track 2 across the 5a, it moves on the track 2 together with the traveling platform 3. or,
A lever 3e is provided on the top of the frame 3a.

Further, the sliding portion 2a of the track 2 is sandwiched by the rollers 3b and 3d so that the traveling platform 3 is not separated from the track 2. In addition, even if the mounting table 5 and the traveling table 3 move integrally on the track 2 and the mounting table 5 separates from the track 2, the traveling table 3 cannot move horizontally any more.
A protrusion (not shown) provided on the traveling platform 3 is engaged with a receiving portion (not shown) provided on the track 2 side.

On the other hand, the mounting table 5 has a substantially L-shape, on which an article 4 (for example, a portable pump) is mounted, and a roller 5b is provided below the article 4 to mount the mounting table 5. When located on track 2, it is located in groove 2b of track 2 (see Fig. 1)
Then, when the mounting table 5 is separated from the track 2 (see FIG. 2), there is nothing to prevent the lifting and lowering, and the rollers 3b, 3c of the traveling table 3 and the sliding portion 5a come in contact with each other to allow the lifting and lowering. .

As shown in FIGS. 3 and 7, a support rod 5f that engages with the lever 3e is provided on the mounting table 5, and the lever 3e is rotated to engage with the support rod 5f. , The movement of the mounting table 5 is locked, and when the articles 4 are transferred, the mounting table 5 is elastic member 6
I'm trying not to rise.

In addition, the mounting table 5 and the traveling table 3 have a structure shown in FIG.
As shown in FIG. 3, elastic members (for example, springs wound in a coil shape) 6, 6, a rising movement blocking member 7, an absorber 8, a link 9 and the like are provided.

The elastic member 6 and the elastic member 6 are arranged side by side on the left and right, and one end thereof is on the side of the mounting table 5 (for example, the lower portion of the mounting table 5).
The other end is attached to the side of the traveling table 3 (for example, the upper portion of the traveling table 3).

Between the elastic member 6 and the elastic member 6,
An absorber 8 is provided in order to prevent the mounting table 5 from dropping suddenly. The absorber 8 shown in FIG. 3 is arranged so that the resistance is large in the descending direction and the resistance is small in the ascending direction, and a link 9 is provided to supplement the stroke thereof ( If the stroke of the absorber 8 is sufficient, the link 9 can be omitted.)

Further, when the article 4 is mounted on the mounting table 5, the ascending movement preventing means 7 prevents the sliding of the mounting table 5 in the vertical direction, and the article 4 is mounted on the mounting table 5. When it is not mounted, it acts so as to prevent upward movement of the mounting table 5, and more specifically, it comprises, for example, a detection member 10, an operating member 11, and a stopper body 12.

The detection member 10 is pushed and moved by the article 4 (support frame 4a) on the mounting table 5 (see FIG. 4), and when the article 4 is removed, it is returned to its original position by the urging member 10a. (See FIG. 5) The presence or absence of the article 4 is detected, and the operating member 11
Is for receiving the movement of the detection member 10 at one end side and transmitting the movement to the other end side. The stopper body 12 is moved to the lowest position as the mounting table 5 slides downward as shown in FIG. Actuating member only when it moves to the lower position and the detecting member 10 returns to the original position
It is arranged on the side of the traveling table 3 so that the other end sides of 11 are opposed to each other.

On the mounting table 5, as shown in FIG.
Positioning members 5c, 5c, 5d for positioning the article 4 and a biasing member 5e for preventing positional deviation are provided. 5g is
The cover 5g is provided so that a finger or the like is not caught in the sliding surface when the roller 3b slides.

In order to take out the article 4 of the movable carriage 1 configured as described above, the traveling base 3 and the mounting base 5 on the track 2 attached to the vehicle (not shown) are manually moved ( (See FIG. 1). When the mounting table 5 is separated from the tip of the track 2, the weight of the article 4 on the mounting table 5 causes the mounting table 5 to descend against the biasing force of the elastic member 6.

With the mounting table 5 lowered (see FIG. 2),
When the article 4 is removed from the mounting table 5, the mounting table 5 tries to rise due to the urging force of the elastic member 8, but the upward movement blocking member 7 blocks the upward movement of the mounting table 4.
(Note that when the mounting table 5 descends, the detection member 10 is pushed and moved by the article 4 on the mounting table 5, and this movement causes the other end side of the operating member 10 to move as shown in FIG. There is no hindrance to the lowered state because it does not face the stopper body 12. When the article 4 is removed from the placing table 5 with the placing table 5 lowered and moved to the lowest position as shown in FIG. The mounting table 5 tries to move up due to the urging force of the elastic member 8. However, as shown in FIG. 5, the detecting member 10 returns to its original position and the operating member 11 moves.
Since the other end side of the mounting member 5 is slightly opposed to the stopper body 12, the other end side of the operating member 11 comes into contact with the stopper member 12 and the upward movement of the mounting base 5 is prevented after the mounting base 5 is slightly raised. )again,
When the article 4 is placed on the placing table 5 and the placing table 5 is returned to the predetermined position on the track 2, the placing table 5 on which the article 4 is placed is lifted. At this time, the elastic member 6 is attached in the lifting direction. The force acts to reduce the load burden on the hand.

Then, the mounting table 5 is lifted to a predetermined position and pushed toward the track 2 to mount the mounting table 5 on the track 2 at a predetermined position.

When the article 4 is taken in and out of the mounting table 5, it is desirable that the lever 3e be rotated to engage the support rod 5f to lock the movement of the mounting table 5 so that the mounting table 5 is moved. The elastic member 6 prevents it from rising. And the mounting table 5
In the state where the article 4 is further removed, the other end side of the operating member 11 faces the stopper body 12 as shown in FIG. 5, so that even if the lever 3e and the support rod 5f are disengaged thereafter. After the mounting table 5 is slightly raised, the other end of the actuating member 11 contacts the stopper body 12 to prevent the mounting table 5 from moving upward.

Further, in the lock mechanism formed by the engagement between the lever 3e and the support rod 5f, the spring force of the biasing member 10a is strong, and when the article 4 is removed from the mounting table 5, the detection member 10 is turned on. As shown in FIG. 5, if it is set to return to the original position in a short time and the other end side of the operating member 11 faces the stopper body 12, it can be omitted.

The "vertical direction" referred to in the present invention includes a direction having a slight inclination.

[0032]

In the movable carriage of the present invention, the traveling platform that moves on the track and the traveling platform that moves together on the track and separates from the track become vertically slidable. Mounted on the mounting table for mounting the article, an elastic member having one end on the side of the mounting table and the other end on the side of the traveling table, and when the article is mounted on the mounting table. , When there is no hindrance to vertical sliding of the mounting table and no article is mounted on the mounting table,
Since the rising movement blocking member for blocking the upward movement of the mounting table is provided, in the state where the mounting table is lowered,
When the article is removed from the mounting table, the mounting table tries to rise due to the urging force of the elastic member, but the upward movement blocking member can prevent the upward movement of the mounting table and prevent the worker from being damaged. can do.

Further, in the movable carriage of the present invention, the traveling platform that moves on the track and the traveling platform that moves on the track together with the traveling platform and is disengaged from the track is slidable in the vertical direction. Mounted on the mounting table for mounting the article, an elastic member having one end on the side of the mounting table and the other end mounted on the side of the traveling table, and is moved by being pushed by the article on the mounting table. , A detection member that returns to its original position by an urging member when the article is removed and detects the presence or absence of the article, and an operation that receives movement of the detection member on one end side and transmits the movement to the other end side On the side of the traveling table so that the other end side of the member and the operating member face each other only when the mounting table slides downward and moves to the lowest position and the detection member returns to the original position. Since it is provided with a stopper body arranged, When the article is removed from the placing table in the state where the detecting table is lowered and moved to the lowest position, the placing table tries to rise due to the urging force of the elastic member, but the detecting member returns to the original position and the other end of the operating member. Since the side faces the stopper body, the other end side of the actuating member abuts the stopper body after the mounting table is slightly raised, so that the upward movement of the mounting table can be prevented and damage to the worker is prevented. be able to.

[Brief description of drawings]

FIG. 1 is a schematic side view of a movable carriage according to an embodiment of the present invention.

FIG. 2 is a schematic side view of a mounting table of a movable carriage according to an embodiment of the present invention in a lowered state.

FIG. 3 is a schematic perspective view of the movable carriage shown in FIG. 2 as viewed from the back side.

FIG. 4 is a schematic partial cross-sectional view of a lowered state of the mounting table of the movable carriage according to the embodiment of the present invention.

FIG. 5 is a schematic partial cross-sectional view showing a state where no article is placed on the placing table of the movable carriage according to the embodiment of the present invention.

FIG. 6 is a schematic perspective view of the movable carriage shown in FIG. 5 viewed from the front side.

FIG. 7 is a schematic side view showing a state in which the mounting base and the traveling base of the movable carriage of one embodiment of the present invention are locked.

8 is a schematic cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Movable trolley 2 Orbit 3 Running platform 4 Articles 5 Loading platform 6 Elastic member 7 Ascending movement prevention means

Claims (2)

[Claims] 1. A traveling platform that moves on a track, and a traveling platform that is integrated with the traveling platform and that is mounted so as to be slidable in the vertical direction when the vehicle travels on the orbit and separates from the orbit, and places an article. A mounting table, an elastic member having one end on the side of the mounting table and the other end attached on the side of the traveling table, and when an article is mounted on the mounting table, the vertical direction of the mounting table A movable carriage, which is provided with an ascending movement blocking member that prevents sliding in the upward direction and prevents an upward movement of the mounting table when an article is not mounted on the mounting table. 2. A traveling base that moves on the track, and an article on which the article is mounted while being mounted so as to be slidable in the up-and-down direction when moving on the track integrally with the platform and separating from the track. A mounting table, an elastic member having one end attached to the mounting table side and the other end attached to the traveling table side, and the article on the mounting table is pushed and moved to remove the article. A detection member that returns to its original position by an urging member to detect the presence or absence of an article, an operation member that receives the movement of the detection member at one end side and transmits the movement to the other end side, and the mounting table described above are below. And a stopper body arranged on the side of the traveling platform so that the other end side of the operating member faces only when the detecting member returns to the original position by sliding in the direction. Movable trolley characterized by the fact.