CN115402393A - Trolley for conveying gas container - Google Patents

Abstract

The invention provides a trolley for conveying a gas container, which is applicable to conveying in and out of various cylinder cabinets of gas bottles without depending on structures of the cylinder cabinets and the gas bottles, and can easily convey, convey out and convey in the gas bottles serving as heavy objects without consuming hands. The trolley for conveying the gas container comprises: a frame having wheels for traveling with the gas cylinder placed thereon; a mounting table provided in the frame, the mounting table being moved by the lift mechanism in a state in which the gas cylinder is mounted in a vertically mounted posture, the gas cylinder being moved in a vertical direction; and a roller for sliding the gas cylinder in a horizontal direction along the mounting table, wherein the mounting table has a hole portion opened in a bottom plate for mounting the gas cylinder, the roller has a sliding mechanism for moving the roller in the horizontal direction along the mounting table, and when the roller is located below the mounting table, the mounting table is lowered so that the roller protrudes from the hole portion onto the bottom plate.

Description

Trolley for transporting gas containers

technical field

The present invention relates to a trolley for transporting gas containers.

Background technique

Conventionally, cylinder cabinets have been widely used as equipment for supplying various gases. The cylinder cabinet stores gas cylinders (gas containers) filled with various gases in a vertically placed posture in a gas cylinder storage (storage space) having a gas cylinder access door.

When using a necessary gas cylinder whose balance is managed by weight, a weight measuring device such as a weight sensor is required, and a heating device for the gas cylinder is required for phase transition from a liquid state in the gas cylinder to a gaseous state. Therefore, a base for mounting the above-mentioned weight sensor, heating device, and the like is arranged at a position corresponding to the bottom of the gas cylinder at the bottom of the cylinder cabinet. Therefore, when storing the gas cylinder in the gas cylinder storage of the tank cabinet, it is necessary to lift the gas cylinder to a level above the base at the bottom of the tank cabinet and place the gas cylinder on the base.

In addition, in the cylinder cabinet, in order to improve the workability when storing gas cylinders in the gas cylinder storage, for example, a roller conveyor (roller conveyor) can be installed at the bottom, so as to reduce the load of the cylinder as a heavy object. Shipping capacity in the cabinet.

On the other hand, the above-mentioned storing work is carried out by lifting the heavy gas cylinder from the ground (floor surface) to a certain height, so it is both heavy labor and dangerous work for the operator. In addition, in the work of storing the gas cylinders in the tank cabinet, first, it is necessary to transport the used gas cylinders from the narrow gas cylinder storage in the tank cabinet and then bring in new gas cylinders, and the workability is absolutely unacceptable. Say good.

In order to improve the workability when storing gas cylinders in the tank cabinet, for example, it has been proposed to use a bevel tool inclined between the bottom of the tank cabinet and the ground (floor surface) or a combination of block-shaped sheet metal parts. Step-like lifting tools, etc. method. However, in the method of using these incline tools or lift tools, it is necessary to tilt the gas cylinder manually and to place the gas cylinder on the bottom of the tank cabinet with great effort. In such a working environment, there is a high risk of work-related injuries and accidents, and it is very demanding and heavy work for elderly and female workers, so it is necessary to improve it as soon as possible.

In order to improve workability when storing gas cylinders in a cylinder cabinet, it has been proposed to provide a lifting arm for lifting the gas cylinders in the gas cylinder storage (for example, refer to Patent Document 1).

In addition, it is also proposed to install a transport adapter on the gas cylinder, and carry out the scheme of carrying out and transporting the gas cylinder between the gas cylinder transport trolley and the cylinder cabinet through the transport adapter (for example, refer to Patent Document 2 ).

Patent Document 1: Japanese Utility Model Patent Publication No. 63-074600

Patent Document 2: Japanese Patent Laid-Open No. 2001-106086

However, the technology disclosed in Patent Document 1 relates to a structure in which a lifting arm is attached to a gas cylinder storage, and therefore requires changing the structure of the gas cylinder storage, so there is a problem that cases where this technology can be applied are limited.

In addition, since the technology disclosed in Patent Document 2 relates to a structure in which a transport adapter is attached to a gas cylinder, it is necessary to attach the transport adapter to all the gas cylinders. Therefore, since the structure of the periphery of the gas cylinder is changed along with a marked increase in the cost of the device, there is a problem that applicable cases are limited similarly to the above. In addition, as before, there is a problem that a lot of manpower is required for carrying out and carrying in gas cylinders between the gas cylinder transporting trolley and the tank cabinet.

Contents of the invention

The present invention is made in view of the above problems, and its object is to provide a trolley for transporting gas containers, which is not dependent on the structure of cylinder cabinets and gas cylinders, and can be applied to the transportation of gas cylinders to various cylinder cabinets. out, and can easily carry out the transport, transport, and transport of gas cylinders as heavy objects without the need for human hands.

In order to solve the above-mentioned problems, the present invention provides the following trolley for transporting gas containers.

(1) A trolley for transporting gas containers, comprising:

The frame has wheels for running in a state where the gas container is placed;

a mounting table provided in the frame, and moves in the vertical direction by an elevating mechanism in a state where the gas container is placed, so that the gas container moves up and down; and

rollers, enabling the gas container to slide and move horizontally along the mounting table,

The trolley for transporting the gas container is characterized in that

The mounting table has a hole opening on a bottom plate for mounting the gas container,

the roller has a slide mechanism for moving the roller in the horizontal direction along the stage,

When the roller is located below the mounting table, the mounting table is lowered so that the roller protrudes from the hole to the bottom plate.

(2) The gas container transportation cart according to (1), wherein a plurality of the hole portions are arranged on the mounting table,

A plurality of the rollers are arranged corresponding to the holes.

(3) The gas container transport vehicle according to (1) or (2), wherein when the roller slides to a position deviated from the position below the mounting table, the The platform is lowered in a grounded manner.

(4) The trolley for transporting gas containers according to any one of (1) to (3), further comprising: a device for absorbing an impact generated when the mounting platform is lowered by the lifting mechanism. shock absorber.

(5) The gas container transport vehicle according to any one of (1) to (4), further comprising: a stopper for restricting travel of the gas container transport vehicle.

(6) The gas container transportation cart according to (5), wherein the stopper is a pedal type.

(7) The trolley for transporting the gas container according to any one of (1) to (6), further comprising: an overturn prevention tool for holding the gas container.

(8) The trolley for transporting the gas container according to (7), wherein the fall prevention tool includes: a fixing rod for holding the gas container so as to surround the side; and a screw. , screwed into the screw hole provided on the fixing rod, and arranged such that the front end of the screw rod abuts against the side of the gas container.

(9) The trolley for transporting gas containers according to (7) or (8), wherein the overturn prevention tool includes a hook for engaging and detaching from the overturn prevention tool. at least part of .

(10) The gas container transport trolley according to any one of (1) to (9), further comprising: a handle for manually driving the gas container transport trolley.

(11) The gas container transport vehicle according to any one of (1) to (10), wherein an adjuster for raising and lowering at least a part of the frame is further provided in the frame.

(12) The trolley for transporting the gas container according to any one of (1) to (11), further comprising a rotation drive mechanism for rotating the wheel so that the gas container The transport trolley can run by itself.

According to the trolley for transporting the gas container of the present invention, the mounting table for the gas container has a hole portion opened on the bottom plate for mounting the gas container, and the roller has a structure for moving the roller along the mounting table. The sliding mechanism moves in the horizontal direction. When the roller is positioned below the mounting table, the mounting table is lowered, so that the roller protrudes from the hole on the bottom plate.

With the above configuration, when the gas cylinder is placed on the mounting table of the gas container transport trolley, the mounting table can be grounded by retracting the rollers to the rear end side of the mounting table, so that the mounting table can be connected to the ground ( floor surface) to a minimum, so that the gas cylinder can be easily placed on the mounting table. On the other hand, when carrying out the gas cylinder from the cylinder cabinet, the mounting table can be lowered by advancing the roller to the front end side of the mounting table, so that the roller protrudes from the hole, so that the gas cylinder can be placed on the roller , so cylinders can be easily shipped out.

Therefore, it is not necessary to change the structure of the cylinder cabinet and the gas cylinder, and it does not depend on the structure of the cylinder cabinet and the gas cylinder, it can be applied to the import and export of gas cylinders to various cylinder cabinets, and it can be done without labor. Transport, transport, and transport of gas cylinders, which are heavy objects, are easily performed.

Description of drawings

FIG. 1 is a diagram schematically illustrating a gas container transport truck to which an embodiment of the present invention is applied, and is a perspective view showing the overall structure of the gas container transport truck.

2 is a diagram schematically illustrating a gas container transport truck according to an embodiment of the present invention, and is a front view showing a state where a mounting table is grounded on the gas container transport truck shown in FIG. 1 .

Fig. 3A is a diagram schematically illustrating a gas container transport truck according to an embodiment of the present invention, and is a side view of the gas container transport truck shown in Fig. 1 .

3B is a diagram schematically illustrating a gas container transport vehicle according to an embodiment of the present invention, and is a side view showing a state in which the entire gas container transport vehicle shown in FIG. 3A is tilted by raising the front end side thereof; .

Fig. 4 is a diagram schematically illustrating a gas container transport vehicle according to an embodiment of the present invention, and is a rear view of the gas container transport vehicle shown in Fig. 1 .

Detailed ways

Hereinafter, a gas container transport vehicle according to an embodiment to which the present invention is applied will be described with appropriate reference to the drawings. In addition, in the drawings used in the following description, in order to facilitate understanding of features, characteristic parts are sometimes shown enlarged for convenience, and the dimensional ratios of the respective components are not necessarily the same as the actual ones. In addition, the material etc. which are illustrated in the following description are an example, and this invention is not limited to this, It can change suitably in the range which does not change the summary, and can implement.

<Structure of the gas container transportation trolley>

The structure of the gas container transportation cart of this embodiment is described in detail with reference to FIGS. 1 to 4 .

1 is a perspective view showing the overall structure of a gas container transport cart 1 according to this embodiment, and FIG. 2 is a front view showing a state where a mounting table 3 is grounded on the gas container transport cart 1 shown in FIG. 1 . 3A is a side view of the gas container transport cart shown in FIG. 1 , and FIG. 3B is a side view showing a state in which the entire gas container transport cart 1 shown in FIG. 3A is tilted by raising the front end 1A side. In addition, FIG. 4 is a rear view of the gas container transport vehicle 1 shown in FIG. 1 .

The gas container transportation cart 1 of the present embodiment is used, for example, to carry in and out a gas cylinder (gas container) B into a gas cylinder storage (storage space) provided in a cylinder cabinet (not shown). That is, the gas container transportation cart 1 lifts the gas cylinder B and places it on the base with the raised bottom of the cylinder cabinet, thereby storing the gas cylinder B in the gas cylinder storage in a vertically placed posture. The cylinder cabinet supplies the gas filled in the gas cylinder B to, for example, a semiconductor manufacturing device or the like.

Specifically, as shown in FIGS. 1 to 4 , a gas container transport vehicle 1 according to the present embodiment includes a frame 2 , a mounting table 3 and rollers 4 provided on the frame 2 .

In addition, the mounting table 3 has a hole portion 31 opened in the bottom plate 3a for mounting the gas cylinder B. As shown in FIG. The roller 4 has a sliding mechanism 41 for moving the roller 4 in the horizontal direction along the mounting table 3 .

In addition, the gas container transportation cart 1 according to the present embodiment is configured such that when the roller 4 is located below the stage 3 , the stage 3 descends so that the roller 4 protrudes from the hole 31 onto the bottom plate 3 a.

Furthermore, the gas container conveyance trolley 1 of the example shown in FIGS. An overturn prevention tool 7 for preventing the gas cylinder B from overturning, a handle 8 for driving the gas container transport trolley 1 , and an adjuster 9 for raising and lowering a part of the frame 2 .

In the gas container transportation trolley 1 of this embodiment, the gas cylinder B is carried in and out on the front end 1A side shown in FIG. etc. the location of the operation. Therefore, in this specification, for the sake of convenience, the front end 1A may be expressed as the front side of the gas container transportation vehicle 1, and the rear end 1B may be expressed as the rear side of the gas container transportation vehicle 1. Between the ends 1B is expressed as "front and rear direction" and the like.

In addition, in a horizontal plane, the direction orthogonal to the front-back direction may be expressed as a "width direction".

The frame 2 supports and constructs each element of the gas container transport cart 1, and is configured to include wheels 25 for traveling in a state where the gas cylinder B is placed.

In the illustrated example, a lower frame portion 21 formed in a substantially rectangular shape in a plan view is arranged on the lower portion of the frame 2. When viewed from above (planar view), the lower frame portion 21 is arranged to extend from a side frame portion 22 to be described later. In the case of the rear support portion 24 , wheels 25 are arranged so as to be rotatable and freely rotatable at four corners in total. Moreover, the said lower frame part 21 functions as the base of the frame 2, and mounts the mounting table 3, the roller 4, etc. which are mentioned in detail later.

Further, the frame 2 extends upward from the lower frame portion 21 based on the lower frame portion 21 , and has a side frame portion 22 formed in a substantially rectangular shape in plan view as shown in the front view of FIG. 2 . In addition, the side frame portion 22 is provided on the above-mentioned rear end 1B side in the lower frame portion 21 . As described above, on the side of the rear end 1B of the side frame portion 22 , the support portion 24 is provided so as to extend rearward.

Compared with the gas cylinder B, the frame 2 is wider overall, and slightly longer in the front-rear direction than in the width direction, and the height of the frame 2 is about 2/3 of the height of the gas cylinder B. That is, the lower frame portion 21 and the side frame portion 22 of the frame 2 are wider than the cylinder B, and the front-back direction of the lower frame portion 21 is slightly longer than the width direction. Furthermore, the height of the side frame portion 22 of the frame 2 is approximately 2/3 of the height of the gas cylinder B. As shown in FIG.

The mounting table 3 is provided on the lower frame part 21 of the frame 2, and is used for mounting the gas cylinder B carried in and carried out with respect to the cylinder cabinet which is not shown in figure. The mounting table 3 moves the gas cylinder B vertically by the elevating mechanism 35 in a state in which the gas cylinder B is placed in the vertical orientation, thereby moving the gas cylinder B up and down.

As the lifting mechanism 35, for example, a hydraulic jack can be used, and by operating the lifting handle 35a, the mounting table 3 is moved up and down by hydraulic pressure.

The elevating mechanism 35 for elevating and descending the mounting table 3 is not particularly limited, but an electric motor, an air cylinder, etc. may be appropriately used in consideration of practicality, for example, in addition to the hydraulic jack described above.

The mounting table 3 is arranged on the front end 1A side of the frame 2 , that is, on the side opposite to the rear end 1B where the side frame portion 22 is provided on the lower frame portion 21 .

The mounting table 3 shown in FIG. 1 etc. has a substantially U-shape in plan view, and has a plurality of holes 31 opened in the bottom plate 3 a for mounting the gas cylinder B in the illustrated example. In addition, the mounting table 3 is structured such that a side wall portion 3d is formed so as to stand up from the peripheral portion of the bottom plate 3a, and the side wall portion 3d is arranged on the rear end portion 3c and both sides thereof. On the other hand, the front end portion 3b The side wall portion 3d is not formed, and is opened only at this position.

In addition, in the example shown in FIG. 1 etc., in the bottom plate 3a, the hole part 31 of a total of three places adjacent is arrange|positioned so that two rows may be arranged in parallel. In addition, the hole portion 31 in the illustrated example is formed in a substantially slit shape so that the roller 4 described later can be inserted through the hole portion 31 and protrude from the bottom plate 3 a.

The rollers 4 are used to slide the cylinder B along the bottom plate 3a of the loading table 3 in the horizontal direction. In the illustrated example, a total of three adjacent rollers 4 are arranged in two rows in parallel, thus a total of six rollers 4 Construction of so-called roller conveyors. In the example shown in FIG. 1 and the like, a total of six rollers 4 composed of rotatable free rollers are provided. In addition, the rollers 4 of the illustrated example are provided in positions corresponding to the holes 31 in numbers corresponding to the holes 31 of the mounting table 3 . In addition, each of the plurality of rollers 4 is provided rotatably by a rotating shaft not shown in the figure.

The diameter and number of the rollers 4 used in the gas container transport cart 1 of this embodiment are not particularly limited, and can be appropriately selected according to the specifications of the gas cylinder B to be placed so as to obtain the required strength and area.

The roller 4 has a slide mechanism 41 for horizontally moving the roller 4 in the front-rear direction of the frame 2 along the bottom plate 3 a of the stage 3 . In the example shown in FIG. 1 and FIG. 4 , the operation of the sliding mechanism 41 shows that the roller 4 is arranged under the mounting table 3 at a position corresponding to the hole portion 31, and the roller 4 is placed under the mounting table 3 at a position corresponding to the hole portion 31. This position is lowered, and the roller 4 is in a state protruding from the hole portion 31 onto the bottom plate 3 a.

The gas container transport trolley 1 according to the present embodiment is configured so that the gas cylinder B can be slid in the horizontal direction while the gas cylinder B is placed on the rollers 4 in a vertical position. .

In addition, in the example described in this embodiment, when the plurality of rollers 4 slide back to the position deviated from the position below the mounting table 3, that is, to the rear end portion 3c side of the mounting table 3, as shown in FIG. 2, the bottom plate 3a of the mounting table 3 is lowered so as to be grounded to the ground (floor surface) J. As shown in FIG.

A more specific description is as follows. As shown in FIG. 3A, in the state where the mounting table 3 is raised by the elevating mechanism 35, the plurality of rollers 4 are moved to the rear end portion 3c side of the mounting table 3, so that the plurality of rollers 4 are placed on the loading table. The state below the bottom plate 3a of the platform 3. In this state, as shown in FIG. 2 , the mounting table 3 is lowered by the elevating mechanism 35 so that the bottom plate 3 a and the ground (floor surface) J are grounded.

The trolley 1 for transporting the gas container of the example described in this embodiment is configured so that, for example, the gas cylinder B placed on the ground (floor surface) J can be easily placed on the ground (floor surface). J is placed on the bottom plate 3a of the stage 3 which is grounded.

The slide mechanism 41 slides and drives the plurality of rollers 4 in the front-rear direction along the slide shaft 42 . The drive source for the slide mechanism 41 is not particularly limited, but for example, a manual manipulator, an electric motor, a pneumatic cylinder, or a hydraulic cylinder can be appropriately used in consideration of practicality.

In addition, the sliding mechanism 41 of the illustrated example is composed of a manual lever 41a for switching the positions of the plurality of rollers 4 in the front-back direction of the gas container transport vehicle 1, a plurality of links not shown, and a plurality of links not shown. A linkage mechanism composed of multiple joints. Among these, a plurality of joints connects the links to each other so that the links can be rotatable. In addition, the end part of the manual lever 41a is connected to the one end side of a link so that a plurality of links may be rotatable. In addition, the slide mechanism 41 slides the manual lever 41a in the horizontal direction to rotate a plurality of links in conjunction with each other, and the entire link mechanism expands and contracts in the front-back direction of the gas container transportation cart 1 and slides and drives it. A plurality of rollers 4.

In addition, in the gas container transportation cart 1 of the present embodiment, it is more preferable that a plurality of holes 31 are arranged in the mounting table 3 , and a plurality of rollers 4 are arranged corresponding to the plurality of holes 31 . Accordingly, each hole portion 31 can be configured small, and a sufficient substantial area of the bottom plate 3 a of the mounting table 3 can be ensured, so that the gas cylinder B can be mounted in a stable state.

In the gas container transportation cart 1 of the present embodiment, it is more preferable to include a shock absorber 5 for absorbing the shock generated when the mounting table 3 is lowered by the elevating mechanism 35 as in the example shown in FIGS. 1 and 4 . The upper end 51 of the shock absorber 5 in the illustrated example is fixed to a post 71 of an overturn prevention tool 7 described in detail later, and the lower end 52 of the shock absorber 5 is fixed to the lower frame portion 21 . As such a damper 5 , for example, a damper made of a gas damper or the like can be used.

The gas cylinder B placed on the mounting table 3 also depends on the size, etc., but since the weight is close to 150kg, it is preferable to use a shock absorber when the mounting table 3 is grounded with the gas cylinder B mounted on it. The buffer function of the device 5 makes the mounting table 3 slowly ground.

In addition, in the present embodiment, it is more preferable to include a stopper 6 for restricting the travel of the gas container transport vehicle 1 as in the example shown in FIG. 1 and the like. As such a stopper 6 , for example, a pedal-type stopper (brake) that restricts rotation of the wheel 25 by stepping on a pedal-type lever 61 as shown in the figure can be used.

By providing the above-mentioned stopper 6 , for example, when a reaction force is generated when the gas cylinder B is moved horizontally, it is possible to prevent the entire gas container transport cart 1 from tilting backward (to the side of the stopper 6 ).

In addition, in the present embodiment, it is more preferable to include an overturning prevention tool 7 for stably holding the gas cylinder B on the mounting table 3 . As such an overturning prevention tool, for example, a tool that can fix the gas cylinder B to the frame 2 and can be integrated with a chain or a belt can be used. In addition, the fall prevention tool is not limited to the belt-shaped member such as the above-mentioned chain or belt, and may be a member capable of absorbing and holding the gas cylinder B, for example.

In addition, as the fall prevention tool 7, it is more preferable to adopt a fall prevention tool having a structure such as that illustrated in FIG. The rod 72 and the screw 74 are screwed into the screw hole 73 provided on the fixed rod 72, and are provided so that the end (tip end) not shown in the drawing abuts against the side of the cylinder B. In the fall prevention tool 7 of the illustrated example, two fixing rods 72 are provided at positions corresponding to the upper part and the lower part of the gas cylinder B, respectively, and these fixing rods 72 are fixed to the pillars 71 . In addition, the pillar 71 is fixed to the lower frame portion 21 of the frame 2 . In addition, the fixed rod 72 shown in the figure is composed of a rear rod 72a fixed to the pillar 71 and a detachable rod 72b provided with the above-mentioned screw hole 73.

By providing the overturn prevention tool 7 described above, it is possible to suppress the posture of the gas cylinder B placed on the mounting table 3 from shaking, and thus the gas cylinder B can be transported in a stable posture.

In addition, in the present embodiment, it is more preferable to provide a hook 23 which can Used to engage at least a part detached from the above-mentioned fall prevention tool 7 . In this case, for example, the detachable rod 72b detached from the back rod 72a can be engaged with the hook 23 in a state where the screw 74 is screwed into the screw hole 73 .

In addition, in the present embodiment, it is more preferable to include a handle 8 for an operator to manually drive the gas container transport trolley 1 . In the example shown in FIGS. 1 to 4 , the handle 8 is provided at two places on the side of the rear end 1B on the side opposite to the side where the gas cylinder B is arranged in the side frame portion 22 of the structural frame 2 . The trolley 1 for transporting the gas container of this embodiment is provided with two handles 8 as shown in the figure, and the operator can manually drive the trolley 1 for transporting the gas container by operating the handle 8, thereby easily transporting the gas cylinder B. .

In addition, in this embodiment, the manual type in which the operator operates the handle 8 and rotates the wheels 25 to drive the gas container transport trolley 1 has been described as an example, but the present invention is not limited to this. of manual. For example, it is also possible to adopt a structure in which a rotary driving mechanism such as a motor (not shown) for rotationally driving the wheels 25 is provided, and the gas cylinder B can be automatically transported by driving the entire gas container transport trolley. transport.

In addition, in this embodiment, as shown in FIGS. 3A and 3B , the lower frame portion 21 of the frame 2 may be provided with an adjuster 9 for raising and lowering at least a part of the frame 2 . The adjuster 9 of the illustrated example is provided at two places in the lower frame portion 21 of the frame 2 so as to sandwich the mounting table 3 from the side. As shown in FIG. 3B , for the adjuster 9 , by operating the lever 91 so that the lower end portion 92 protrudes from the lower portion of the lower frame portion 21 , the portion of the lower frame portion 21 of the frame 2 where the mounting table 3 is disposed can be adjusted. The front end 1A side rises, and the mounting table 3 rises with this rise.

By including the above-mentioned adjuster 9, for example, when the height of the gas container transportation trolley 1 is different from that of the cylinder cabinet (not shown), that is, when the bottom of the cylinder cabinet side is slightly higher, the mounting table can be adjusted to a lower height. 3 rises slightly. Thus, when the gas cylinder B slides on the mounting table 3 and the roller 4 to move from the gas container transport trolley 1 to the cylinder cabinet, it is possible to prevent the gas cylinder B from being caught by the bottom of the cylinder cabinet. Handover safely.

According to the trolley 1 for transporting gas containers of the present embodiment, by having the above-mentioned structure, it is not necessary to change the structure of gas cylinders and cylinder cabinets like the conventional gas container transporting trolleys (see also the above-mentioned prior art document 1). Patent Documents 1, 2). Thereby, regardless of the structure of a cylinder cabinet and a gas cylinder, it can apply to carrying in and carrying out a gas cylinder to various cylinder cabinets.

Next, using the gas container transport trolley 1 of this embodiment, the procedure of transporting a new gas cylinder B into the tank cabinet (not shown) and the process of transporting the used gas cylinder B out of the tank cabinet will be described. and explain the effects.

First, by stepping on the stopper 6, the rotation of the wheel 25 is restricted.

Next, the plurality of rollers 4 are retreated by the slide mechanism 41, and the bottom plate 3a of the mounting table 3 and the ground (floor surface) J are grounded. At this time, first, by operating the lifting handle 35 a provided in the lifting mechanism 35 , the mounting table 3 is raised first. Next, the plurality of rollers 4 are slid and moved to the rear end 1B side by operating a manual lever (not shown) included in the slide mechanism 41 . Then, the bottom plate 3 a of the mounting table 3 is lowered to a position where it is grounded on the ground (floor surface) J. As shown in FIG.

Next, by loosening the screw 74, the detachable rod 72b arranged in the upper and lower two fixed rods 72 is detached from the back rod 72a.

Next, the gas cylinder B placed on the ground (floor surface) J is placed on the bottom plate 3 a of the mounting table 3 in the above state. At this time, first, after the gas cylinder B is placed on the bottom plate 3a, the side surface of the gas cylinder B is positioned against the rear rod 72a for positioning. In the gas container transportation trolley 1 of this embodiment, since the step difference between the mounting platform 3 and the ground (floor surface) J is very small, it is not necessary to lift the gas cylinder B as a heavy object, and it can be easily placed on the stage 3.

Next, attach the detachable rod 72b to the back rod 72a so as to surround the side of the gas cylinder B, screw the screw 74 into the screw hole 73, and make the end of the screw 74 abut against the side of the gas cylinder B to hold Cylinder B.

Next, by operating the lift handle 35a included in the lift mechanism 35, the mounting table 3 on which the gas cylinder B is mounted is moved to the upper limit side of the lift range. In this state, by operating the manual lever 41 a included in the slide mechanism 41 , the plurality of rollers 4 are advanced to the front end 1A side through the slide mechanism 41 .

Next, by operating the lifting handle 35a of the lifting mechanism 35 to lower the mounting table 3, the plurality of rollers 4 are inserted into each of the plurality of holes 31, so that each roller 4 protrudes from the bottom plate 3a. Thereafter, by operating the lifting handle 35a again, the position in the height direction of the mounting table 3 is fixed at this position. Thereby, the gas cylinder B on the bottom plate 3 a is supported by the plurality of rollers 4 protruding from the plurality of hole portions 31 .

Next, the stopper 6 is released by stepping on the pedal lever 61, and the gas container transport trolley 1 is manually driven by operating the handle 8 to transport the gas cylinder B to a predetermined installation place such as a cylinder cabinet. .

Next, after the screw 74 is loosened, the detachable rod 72b is detached from the back rod 72a.

Then, by sliding and moving the gas cylinder B in the horizontal direction on the plurality of rollers 4, the gas cylinder B is moved to a predetermined installation position such as the bottom of the tank cabinet. At this time, since the gas cylinder B is slidably moved by the rotation of the plurality of rollers 4, the gas cylinder B can be easily placed on the bottom of the cylinder cabinet without picking up the gas cylinder B.

In addition, what is necessary is just to operate the gas container transport cart 1 in reverse order to the above-mentioned procedure, when carrying out the used gas cylinder B from inside a tank cabinet.

That is, first, in a state where the rotation of the wheels 25 is restricted by the stopper 6, and the mounting table 3 is raised by the elevating mechanism 35, the plurality of rollers are moved by the sliding mechanism 41 by operating the manual lever 41a included in the sliding mechanism 41. 4 advances so that each roller 4 protrudes from the hole portion 31 of the mounting table 3 onto the bottom plate 3a.

Next, the used cylinder B is slid from the cylinder cabinet and pulled onto a plurality of rollers 4 . Next, in the same manner as above, after positioning the side of the gas cylinder B against the back rod 72a, the loading and unloading rod 72b is installed on the back rod 72a in a manner surrounding the side of the gas cylinder B, and the screw 74 is screwed into the screw hole 73 and The gas cylinder B is held by bringing the end portion into contact with the side portion of the gas cylinder B.

Next, after the trolley 1 for transporting the gas container is manually driven to the position where the used gas cylinder B is transported in, the rotation of the wheel 25 is limited by the stopper 6, and the lifting handle 35a of the lifting mechanism 35 is operated to first make the load The mounting table 3 with the gas cylinder B is raised. In this state, by operating the manual lever 41 a included in the slide mechanism 41 , the plurality of rollers 4 are retracted to the rear end 1B side through the slide mechanism 41 . Then, the bottom plate 3 a of the mounting table 3 is lowered to a position where it is grounded on the ground (floor surface) J. As shown in FIG.

Next, by loosening the screw 74, the attachment and detachment lever 72b arranged at two places up and down is detached from the rear surface lever 72a.

Then, the used gas cylinder B placed on the bottom plate 3 a of the mounting table 3 is pulled out to the ground (floor surface) J. As shown in FIG.

As a result, the used gas cylinder B can be easily transported out from the bottom of the cylinder cabinet having a certain height, and the gas cylinder B can be easily placed on the mounting platform 3 of the gas container transport trolley 1, that is, The rollers 4 are placed on a plurality of rollers 4 protruding from the holes 31 of the mounting table 3 .

In addition, the gas container transport trolley 1 according to the present embodiment is not limited to the use for transporting the gas cylinder B described above, but can be widely used for transporting heavy objects that are difficult to carry in and out manually.

<Effect>

As described above, the gas container transportation cart 1 according to the present embodiment has a structure in which the mounting table 3 for the gas cylinder B has the hole 31 opened on the bottom plate 3a on which the gas cylinder B is placed, and the roller 4 has a The slide mechanism 41 is used to move the roller 4 in the horizontal direction along the mounting table 3 . When the roller 4 is located below the mounting table 3 , the mounting table 3 descends, so that the roller 4 protrudes from the hole 31 .

With the above configuration, when the gas cylinder B is placed on the mounting table 3 of the gas container transportation cart 1, the mounting table 3 is grounded by retracting the roller 4 to the rear end portion 3c side of the mounting table 3, thereby Since the step between the mounting table 3 and the ground (floor surface) J can be suppressed to the minimum, the gas cylinder B can be easily mounted on the mounting table 3 . On the other hand, when the gas cylinder B is transported out of the cylinder cabinet, by advancing the plurality of rollers 4 to the front end portion 3b side of the mounting table 3, the mounting table 3 is lowered so that the rollers 4 pass through the holes 31. Since the gas cylinder B can be placed on the plurality of rollers 4 by protruding, the gas cylinder B can be carried out easily.

Therefore, without changing the structure of the cylinder cabinet and gas cylinder B itself, and independent of the structure of the cylinder cabinet and gas cylinder B, it can be applied to the import and export of gas cylinder B to various cylinder cabinets, and does not require Transport, transport, and transport of the gas cylinder B, which is a heavy object, can be easily performed with a labor-intensive effort.

Embodiments of the present invention have been described with reference to the drawings as described above, but the present invention is not limited to the above-described embodiments, and various changes can be made without departing from the gist of the present invention.

Industrial applicability

The trolley for transporting gas containers according to the present invention can be used for carrying gas cylinders into and out of various cylinder cabinets independently of the structure of the cylinder cabinet and the gas cylinder, and can be easily carried out without labor. Transport, export and import of heavy gas cylinders. Therefore, the trolley for transporting gas containers of the present invention is very suitable for transporting and transporting gas cylinders to and from cylinder cabinets for supplying raw material gases to semiconductor manufacturing equipment and the like, for example.

Explanation of reference signs

1...Trolley for transporting gas containers

1A...front end

2A...backend

2... frame

21...Lower frame

22... side frame

23...hook

24...supporting part

25...wheels

3...Placing table

3a...Bottom plate

3b...Front end

3c...Rear end

3d... side wall part

31...Hole

35...Elevating mechanism

35a...Lift handle

4...Roller

41...Sliding mechanism

41a...Manual lever

5...shock absorber

51...upper end

52...Lower end

6...limiter

61……Pedal rod

7...tools to prevent tipping over

71...pillars

72...fixed rod

72a...Back pole

72b...Loading lever

73c...Plugging metal parts

8...handle

9...Adjuster

91...rod

92...Lower end

J...Ground (floor surface)

Claims (12)

1. A trolley for transporting a gas container, comprising:

a frame having wheels for traveling with the gas container placed thereon;

a mounting table provided in the frame, the mounting table being moved in a vertical direction by a lifting mechanism in a state where the gas container is mounted in a vertically mounted posture, and the gas container being moved up and down; and

a roller for sliding the gas container in a horizontal direction along the mounting table,

the trolley for transporting the gas container is characterized in that,

the mounting table has a hole opened in a bottom plate on which the gas container is mounted,

the roller has a slide mechanism for moving the roller in a horizontal direction along the table,

when the roller is positioned below the table, the table is lowered so that the roller protrudes from the hole portion onto the base plate.

2. The carriage according to claim 1, wherein a plurality of the holes are disposed in the mounting table, and a plurality of the rollers are disposed so as to correspond to the holes.

3. The carriage as claimed in claim 1 or 2, wherein the table is lowered so as to be grounded when the roller is slid to a position deviated from a position below the table.

4. The carriage for transporting a gas container according to claim 1 or 2, further comprising: and a damper for absorbing an impact generated when the mounting table is lowered by the elevating mechanism.

5. The carriage for transporting a gas container according to claim 1 or 2, further comprising: and a stopper for limiting the travel of the gas container conveyance carriage.

6. The trolley for transporting a gas container according to claim 5, wherein the stopper is pedal-operated.

7. The carriage for transporting a gas container according to claim 1 or 2, further comprising: an anti-tipping means for holding the gas container.

8. The trolley according to claim 7, wherein the overturn preventing means includes: a fixing rod for holding the gas container in a manner of surrounding a side portion thereof; and a screw that is screwed into a screw hole provided in the fixing rod, and is provided so that the tip of the screw abuts against the side of the gas container.

9. The gas container conveyance cart according to claim 7, wherein the fall prevention tool includes a hook for engaging at least a part detached from the fall prevention tool.

10. The carriage for transporting a gas container according to claim 1 or 2, further comprising: a handle for manually moving the gas container carrying cart.

11. The gas container transport cart according to claim 1 or 2, wherein an adjuster for raising and lowering at least a part of the frame is further provided in the frame.

12. The gas container conveyance cart according to claim 1 or 2, further comprising a rotation drive mechanism for rotating the wheel, whereby the gas container conveyance cart can travel by itself.

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