TW202313443A - Dolly for gas container - Google Patents

Abstract

The present invention provides a dolly for gas container capable of being used for loading and unloading gas cylinders with respect to various cylinder cabinets regardless of the structures of cylinder cabinets or gas cylinders, and allowing transportation, loading and unloading of gas cylinders that are heavy objects to be easily conducted without manpower. The present invention includes a frame 2 provided with wheels 25 for traveling in a state of being mounted with a gas cylinder B, a mounting stage 3 provided in the frame 2 and moving the gas cylinder B in a vertical direction because of being moved by an elevating mechanism in a state of being mounted with the gas cylinder B in a vertical mounting posture, and rollers 4 for sliding the gas cylinder B in a horizontal direction along the mounting stage 3, wherein the mounting stage 3 has a hole 31 opening in a bottom plate 3a for the gas cylinder B to be mounted thereon, the rollers 4 has a slide mechanism for moving in a horizontal direction along the mounting stage 3, and the rollers 4 would project from the hole 31 to be above bottom plate 3a because of the descent of the mounting stage 3 when the rollers 4 are located under the mounting stage 3.

Description

Cart for transporting gas containers

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

In the past, a cylinder cabinet has been widely used as a device for supplying various gases. The cylinder cabinet is for storing cylinders (gas containers) filled with various gases in a vertical position in a cylinder storage part (storage space) with a door for cylinder access.

When using a steel cylinder in which the remaining amount must be managed by weight, weight measurement means such as a load cell is required. In addition, when the liquid phase in the steel cylinder is phase-transferred to a gas phase, heating means for the steel cylinder is required. Therefore, at the bottom of the cylinder cabinet, at a position corresponding to the lower part of the steel cylinder, a base on which the above-mentioned load cell, heating means, etc. are installed is arranged. Therefore, when storing the cylinder in the cylinder storage portion of the cylinder cabinet, it is necessary to lift the cylinder above the height of the pedestal at the bottom of the cylinder cabinet and place it on the pedestal.

In addition, in the cylinder cabinet, for the purpose of improving the workability when the cylinder is stored in the cylinder storage part, for example, by installing a roller conveyor at the bottom, it is possible to reduce the load of heavy cylinders in the cylinder cabinet. Transport force.

On the other hand, the above-mentioned storage operation is carried out by lifting the steel cylinder belonging to the heavy object from the ground (floor surface) to a certain height, which is a heavy work for the staff and may become a dangerous operation. situation. In addition, when storing the cylinder cabinet into the cylinder cabinet, first, the used cylinder must be taken out from the narrow cylinder storage section of the cylinder cabinet, and then a new cylinder must be loaded in, and the workability is not good.

In order to improve the workability of storing the steel cylinder in the cylinder cabinet, for example, a method of using a slope (slope) aid (jig, also known as a jig) and/or a step-shaped lifting aid, etc. has been proposed. The inclination assisting device is tilted between the bottom of the cylinder cabinet and the ground (floor surface), and the lifting assisting device is composed of block-shaped sheet metal components. However, in the method of using these inclination aids and lifting aids, the steel cylinder is tilted by manpower, and it takes a lot of labor to load the steel cylinder on the bottom of the cylinder cabinet. In such a working environment, there is a high risk of injury and accidents. In addition, it is also a hard and heavy work for the elderly and female workers, and it is necessary to improve it as soon as possible.

For the purpose of improving the workability when the cylinder is stored in the cylinder cabinet, a technique has been proposed in which a lift arm (lift arm) for lifting the cylinder is provided in the cylinder storage part (for example, refer to Patent Document 1).

In addition, there is also a technique proposed in which a transfer adapter is installed on the cylinder, and the gas cylinder is carried out and in between the cylinder transfer trolley and the cylinder cabinet through the transfer adapter (for example, refer to the patent document 2).

[Prior Art Literature]

[Patent Document]

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

[Patent Document 2] Japanese Patent Laid-Open No. 2001-106086

However, the technique disclosed in Patent Document 1 relates to a configuration in which a lift arm is installed in the cylinder storage section, and the structure of the cylinder storage section needs to be changed, so there is a problem that cases where this technique can be applied are limited.

In addition, the technique disclosed in Patent Document 2 relates to a structure in which a transfer adapter is attached to a cylinder, and it is necessary to install a transfer adapter in all gas cylinders. Therefore, the equipment cost will be significantly increased, and the surrounding structure of the steel cylinder will be changed accordingly, and there will be a problem that cases where this technology can be applied are limited like the above. In addition, as in the past, there is a problem that a large amount of manpower is required in carrying out and carrying in the cylinder between the cylinder conveyance trolley and the cylinder cabinet.

The present invention was developed in view of the above-mentioned problems, and its purpose is to provide a trolley for transporting gas containers, which can be applied to the loading and unloading of steel cylinders of various cylinder cabinets regardless of the structure of the cylinder cabinet and the steel cylinder, and , and it is easy to move, move out, and move in heavy steel cylinders without consuming manpower.

In order to solve the above-mentioned problems, the present invention provides the following gas container transport cart.

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

Frame (frame) is equipped with wheels for traveling with the gas container placed thereon;

The mounting table is installed on the frame, and moves in the vertical direction by an elevating mechanism in a state where the gas container is placed, thereby moving the gas container up and down; and

The roller (roller) is used to make the aforementioned gas container slide and move horizontally along the aforementioned loading platform; wherein,

The mounting table has a hole opening on the bottom plate on which the gas container is mounted;

The aforementioned roller train has a sliding mechanism for moving horizontally along the aforementioned loading table; and

When the aforementioned rollers are located below the aforementioned loading table, the aforementioned rolling wheels will protrude from the aforementioned holes to the aforementioned bottom plate due to the descent of the aforementioned loading table.

(2) The trolley for transporting gas containers as described in (1), wherein,

The plurality of holes are arranged on the mounting table; and

A plurality of said roller trains are arrange|positioned so that it may correspond to said hole part.

(3) The trolley for transporting gas containers as described in (1) or (2), wherein,

When the rollers slide and move to a position deviated from the position below the mounting table, the mounting table descends and touches the ground.

(4) The trolley for transporting gas containers as described in any one of (1)~(3), further comprising:

The damper absorbs the shock generated when the above-mentioned loading table is lowered by the above-mentioned lifting mechanism.

(5) The trolley for transporting gas containers as described in any one of (1)~(4), further comprising:

The brake (stopper) is to limit the travel of the aforementioned gas container transport trolley.

(6) The trolley for transporting gas containers as described in (5), wherein,

Aforesaid brake is pedal type.

(7) The trolley for transporting gas containers as described in any one of (1) to (6), further comprising:

The anti-tipping aid is used to hold the aforementioned gas container.

(8) The trolley for transporting the gas container as described in (7), wherein the above-mentioned toppling prevention auxiliary device has: a fixing rod that holds the side of the gas container in a surrounding manner; and a screw that is screwed into It is provided in a screw hole provided on the fixing rod, and is provided in such a manner that the front end abuts against the side of the gas container.

(9) The trolley for transporting gas containers as described in (7) or (8), wherein,

The aforementioned fall prevention aid is provided with a hook for causing at least a part of the fall prevention aid to catch the hook when at least a part of the fall prevention aid is removed.

(10) The trolley for transporting gas containers described in any one of (1) to (9), further comprising: a handle for manually moving the trolley for transporting gas containers.

(11) The gas container conveyance vehicle according to any one of (1) to (10), further comprising an adjuster (adjuster) for raising and lowering at least a part of the frame on the frame.

(12) The trolley for transporting gas containers described in any one of (1) to (11), further comprising a rotary drive mechanism for rotationally driving the wheels, so that the trolley for transporting gas containers can travel independently.

According to the trolley for transporting the gas container of the present invention, the following configuration is adopted: the mounting table of the gas container has a hole that is opened on the bottom plate for mounting the gas container; the roller system has a horizontal movement along the mounting table Sliding mechanism; and when the roller is located under the loading platform, the rolling wheel will protrude from the hole to the bottom plate due to the lowering of the loading platform.

With the above configuration, when the steel cylinder is placed on the mounting table of the gas container transport trolley, the rollers can be retracted toward the rear end side of the mounting table and the mounting table can be brought into contact with the ground, thereby connecting the mounting table with the ground (floor) The step difference between the two sides) is kept to a minimum, so the cylinder can be easily placed on the mounting table. On the other hand, when the cylinder is taken out from the cylinder cabinet, the cylinder can be placed on the roller by advancing the roller toward the front end side of the mounting table and lowering the mounting table so that the roller protrudes from the hole. Therefore, the cylinder can be easily moved out.

Therefore, it is not necessary to change the structure of the cylinder cabinet and the cylinder, and it can be applied to the loading and unloading of cylinders of various cylinder cabinets regardless of the structure of the cylinder cabinet and the cylinder, and can be easily carried out without manpower. Carrying, moving out, and moving in steel cylinders belonging to heavy objects.

1: Trolley for transporting gas containers

1A: front end

1B: Backend

2: frame

3: Carrying table

3a: Bottom plate

3b: front end

3c: Rear end

3d: side wall

4: Roller

5: Damper

6: Brake

7: Anti-dumping aids

8: handle

9: Adjuster

21: Lower frame part

22: side frame

23: hook

24: support part

25: Wheels

31: Hole

35: Lifting mechanism

35a: lifting handle

41: sliding mechanism

41a: manual lever

51: upper end

52: lower end

61: foot-operated rod

71: Pillar

72: fixed rod

72a: Rear rod

72b: assembly and disassembly lever

72c: Inserting and unplugging metal fittings

73: screw hole

74: screw

91: Rod

92: lower end

B: cylinder

J: Ground (floor surface)

Fig. 1 is a diagram schematically illustrating a gas container transporting trolley according to an embodiment of the present invention, and is a perspective view showing the overall configuration of the gas container transporting trolley.

Fig. 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 in which a mounting table is brought into contact with the ground in the gas container transport truck shown in Fig. 1 .

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

Fig. 3B is a diagram schematically illustrating a gas container conveying trolley according to an embodiment of the present invention, and is a side view showing a state in which the front end side of the gas container conveying trolley shown in Fig. 3A is raised to thereby tilt the whole .

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

Hereinafter, a gas container transport vehicle to which an embodiment of the present invention is applied will be described with reference to the drawings as appropriate. In addition, in order to make the features easier to understand, the drawings used in the following description may show the features in an enlarged scale for convenience, and the dimensional ratios of the respective constituent elements may not necessarily be 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 material etc., It can change suitably in the range which does not change the summary, and can implement.

<Structure of the trolley for transporting gas containers>

The configuration of the gas container conveying vehicle of this embodiment will be described in detail with reference to FIGS. 1 to 4 .

1 is a perspective view showing the overall structure of a gas container transport vehicle 1 according to the present embodiment, and FIG. 2 is a front view showing a state where a mounting table 3 is in contact with the ground in the gas container transport vehicle 1 shown in FIG. 1 . Fig. 3A is a side view of the gas container conveying trolley shown in Fig. 1, and Fig. 3B is a side view showing a state in which the front end 1A side of the gas container conveying trolley 1 shown in Fig. 3A is raised to tilt the whole. In addition, FIG. 4 is a rear view of the gas container transport vehicle 1 shown in FIG. 1 .

The gas container transport trolley 1 of the present embodiment is used for carrying in and out a steel cylinder (gas container) B provided in a cylinder storage part (storage space) of a cylinder cabinet (not shown in the drawing), for example. That is, the gas container transport trolley 1 lifts the cylinder B and places it on the pedestal with a raised bottom in the cylinder cabinet, thereby storing the cylinder B in the cylinder storage section in a vertical position. The cylinder cabinet supplies the gas filled in the 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 provided on the frame 2 , and rollers 4 .

Moreover, the mounting base 3 has the hole part 31 opened in the bottom plate 3a on which the steel cylinder B is mounted. The roller 4 has a slide mechanism 41 for moving horizontally along the mounting table 3 .

Furthermore, the trolley 1 for transporting gas containers of this embodiment is configured such that when the rollers 4 are positioned below the mounting table 3, the rollers 4 protrude from the holes 31 onto the bottom plate 3a due to the lowering of the mounting table 3.

Furthermore, the trolley 1 for transporting the gas container shown in the examples shown in FIGS. A tipping aid 7, a handle 8 for moving the gas container conveyance trolley 1, and an adjuster 9 for raising and lowering a part of the frame 2.

The trolley 1 for transporting the gas container of this embodiment carries out the loading and unloading of the steel cylinder B on the front end 1A side shown in FIG. Location. Therefore, for the sake of convenience, in this specification, the front end 1A will be used as the front side of the trolley 1 for transporting gas containers, and the rear end 1B will be used as the rear side of the trolley 1 for gas container transport. The time is expressed as "front-back direction".

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

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

In the illustrated example, a lower frame portion 21 formed in a substantially rectangular shape when viewed from above is arranged at the lower portion of the frame 2, and the lower frame portion 21 and side frame portions 22, which will be described later, are provided in a plan view (viewed from the upper side). In the case of the supporting portion 24 extending rearward, wheels 25 are respectively arranged so as to be rotatable and rotatable at four corner portions of these members in total. In addition, the said lower frame part 21 functions as the base of the frame 2, and the mounting table 3, the roller 4, etc. which are mentioned later in detail are attached.

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

The frame 2 is wider than the cylinder B as a whole, slightly longer in the front-rear direction than in the width direction, and has a height of about 2/3 of the cylinder B. That is, in the frame 2 , the lower frame portion 21 and the side frame portion 22 are wider than the cylinder B, and the lower frame portion 21 is slightly longer in the front-rear direction than in the width direction. In addition, the frame 2 is set so that the height of the side frame part 22 with respect to the height of the cylinder B is about 2/3 height.

The mounting table 3 is provided on the lower frame portion 21 of the frame 2 and is used for mounting the steel cylinder B which is carried in and out of the cylinder cabinet (not shown). The mounting table 3 moves the cylinder B vertically by the elevating mechanism 35 in a state where the cylinder B is placed in the vertical orientation, thereby moving the 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.

Also, the lifting mechanism 35 for lifting and lowering the mounting table 3 is not particularly limited, but in addition to the above-mentioned hydraulic jack, for example, an electric motor, a pneumatic cylinder, etc. may be appropriately used in consideration of practicality.

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

The mounting table 3 shown in FIG. 1 etc. has a substantially U-shape in plan view, and in the illustrated example, has a plurality of holes 31 opening on the bottom plate 3a on which the steel cylinder B is mounted. In addition, the mounting table 3 is configured 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 disposed on the rear end portion 3c and both sides thereof, while the front end portion 3b is not formed. The side wall portion 3d is opened only at this position.

In addition, in the example shown in FIG. 1 etc., the hole part 31 of 3 places total is arrange|positioned in parallel in two rows adjacent to the bottom plate 3a. Moreover, the hole part 31 of the example shown in figure is formed in substantially slit shape, and the roller 4 mentioned later penetrates and protrudes from the bottom plate 3a.

The rollers 4 are used to slide and move the steel cylinder B along the bottom plate 3a of the mounting table 3 in the horizontal direction. In the example shown in the illustration, a total of three rollers 4 arranged in two rows adjacent to each other are arranged in parallel, thereby utilizing a total of six rollers 4. Constitutes a so-called roller conveyor. 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 number and position of the rollers 4 of the example shown in figure correspond to the hole part 31 of the mounting table 3, and are provided. In addition, the plurality of rollers 4 are respectively provided so as to be rotatable by omitting the rotating shafts in the drawing.

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

The roller 4 has a sliding mechanism 41 for moving horizontally in the front-back direction of the frame 2 along the bottom plate 3 a of the mounting table 3 . In the example shown in Fig. 1 and Fig. 4, it is shown that: by the action of the slide mechanism 41, the roller 4 is arranged under the mounting table 3 at a position corresponding to the hole 31, but by moving the load at this position When the stand 3 is lowered, the roller 4 will be in a state protruding from the hole 31 onto the bottom plate 3a.

The trolley 1 for conveying the gas container of the present embodiment has the above-mentioned structure, and has a structure in which the steel cylinder B can slide horizontally in the state where the steel cylinder B is placed vertically on the rollers 4 .

In addition, in the example described in this embodiment, when the plurality of rollers 4 are moved back by sliding to a 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 As shown in FIG. 2 , the bottom plate 3 a of the mounting table 3 descends and comes into contact with the ground (floor surface) J. As shown in FIG.

More specifically, in the state shown in FIG. 3A that the mounting table 3 is raised by the elevating mechanism 35, a plurality of rollers 4 are moved toward the rear end portion 3c side of the mounting table 3, thereby becoming a position on the mounting table 3. The state below the bottom plate 3a. In this state, as shown in FIG. 2 , the mounting table 3 is lowered by the elevating mechanism 35 , whereby the bottom plate 3 a contacts the ground (floor surface) J. As shown in FIG.

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

The sliding mechanism 41 drives the plurality of rollers 4 to slide forward and backward along the sliding shaft 42 . As far as the driving source used for the sliding mechanism 41 is concerned, it is not particularly limited, but it can be selected in consideration of practicality. For example, a manual mechanical arm (manipulator), an electric motor, a pneumatic cylinder, or a hydraulic cylinder are suitably used.

In addition, the sliding mechanism 41 of the illustrated example is constituted by a link mechanism, and the link mechanism includes: a manual lever 41a for switching the positions of the plurality of rollers 4 in the front-back direction of the gas container transport trolley 1; A plurality of connecting rods, and a plurality of joints (joints) are omitted. Among them, a plurality of joints connect the links to each other so that the plurality of links can rotate freely. Moreover, the end part of the manual lever 41a is connected to the one end side of a link, and a some link is rotatable. Moreover, by sliding the manual lever 41a in the horizontal direction, the slide mechanism 41 rotates a plurality of links in conjunction with each other, whereby the entire link mechanism expands and contracts in the front-rear direction of the gas container transport trolley 1, and the plurality of rollers 4 coasting drive.

In addition, in the gas container conveyance vehicle 1 of the present embodiment, it is more preferable that a plurality of holes 31 are arranged on the mounting table 3 , and a plurality of rollers 4 are arranged corresponding to the plurality of holes 31 . Thereby, each hole part 31 can be comprised small and the substantial area of the bottom plate 3a of the mounting table 3 can be ensured sufficiently, Therefore The steel cylinder B can be mounted in a stable state.

In the gas container conveyance trolley 1 of this embodiment, as shown in FIGS. 1 and 4 , it is preferable to have a mechanism for absorbing the shock generated when the mounting table 3 is lowered by the elevating mechanism 35. Damper 5. In the damper 5 shown in the illustration, the upper end 51 side is fixed to the pillar 71 of the fall prevention aid 7 described in detail later, and the lower end 52 side is fixed to the lower frame portion 21 . As such a damper 5, for example, a gas damper or the like can be used.

The steel cylinder B placed on the mounting table 3 also has a weight of approximately 150KG depending on the size, etc. Therefore, when the mounting table 3 touches the ground in the state where the steel cylinder B is loaded, it is preferable to use a damper 5 to make it slowly touch the ground.

In addition, in this embodiment, as shown in the example shown in FIG. With respect to this kind of brake 6, for example, can adopt As shown in the figure, the pedal brake (brake, brake) can limit the rotation of the wheel 25 by stepping on the pedal rod 61 .

By including the above-mentioned brake 6, for example, when a reaction force is generated when the cylinder B is moved horizontally, the entire gas container transport trolley 1 can be prevented from falling backward (to the side of the brake 6).

In addition, in the present embodiment, it is more preferable to include the fall prevention aid 7 for stably holding the steel cylinder B on the mounting table 3 . As such an assisting device for preventing falling, for example, one constituted by a chain or a band and capable of being integrated by fixing the steel cylinder B to the frame 2 can be used. In addition, the fall prevention aid is not limited to the belt-shaped member such as the above-mentioned chain or belt, and may be, for example, a member capable of holding the holding cylinder B by suction.

In addition, as for the fall prevention assisting tool 7, it is more preferable to adopt a structure having a fixing rod 72 and a screw rod 74 as illustrated in FIG. The screw 74 is screwed into the screw hole 73 provided in the fixing rod 72, and is installed so that the end (tip end) (not shown) abuts against the side of the cylinder B. As shown in FIG. In the fall prevention aid 7 shown in the figure, the fixing rods 72 are provided at two positions corresponding to the upper and lower parts of the steel cylinder B, respectively, and the fixing rods 72 are fixed to the pillar 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. These rear rods 72a and the detachable rod 72b are assembled into a It can be easily assembled and disassembled by plugging and unplugging the metal fitting 72c.

Since the posture deviation of the steel cylinder B placed on the mounting table 3 can be suppressed by providing the above-mentioned fall prevention assisting tool 7, the steel cylinder B can be conveyed in a stable posture.

Furthermore, from the viewpoint of ensuring safety, such as when the gas container transport trolley 1 is returned and advanced in the state where the steel cylinder B is not loaded, it is more preferable to provide the hook portion 23 in this embodiment, which can At least a part of the above-mentioned fall prevention aid 7 is removed, and at least a part of the above-mentioned fall prevention aid 7 is hooked to the hook portion 23 . At this time, for example, the detachable rod 72 b removed from the back rod 72 a can be clamped to the hook portion 23 in a state in which the screw 74 is screwed into the screw hole 73 .

In addition, in this embodiment, it is more preferable to include a handle 8 for a worker to manually advance the gas container transport cart 1 . In the example shown in FIGS. 1 to 4 , the handle 8 is provided at two positions on the side of the rear end 1B on the side opposite to the side where the cylinder B is placed in the side frame portion 22 constituting the frame 2 . By providing the handle 8 at two locations as shown in the figure, the gas container transport trolley 1 of this embodiment can be operated by the staff to operate the handle 8, and the gas container transport trolley 1 can be moved manually to easily transport the steel cylinder B .

In addition, in this embodiment, although the manual type in which the handle 8 is operated by a worker and the gas container transport trolley 1 is driven by the rotation of the wheels 25 is described as an example, the present invention is not limited to This kind of manual type. For example, it is also possible to further employ a configuration in which a rotary drive mechanism such as a motor (not shown in the drawing) is provided to drive the wheel 25 to rotate, and the entire gas container transport trolley is self-propelled, whereby the cylinder B can be transported in a self-propelled manner. .

In addition, in this embodiment, as shown in FIG. 3A and FIG. 3B , an adjuster 9 for raising and lowering at least a part of the frame 2 may be provided on the lower frame portion 21 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 , by operating the lever 91, the lower end portion 92 of the adjuster 9 protrudes from the lower portion of the lower frame portion 21, so that the front end of the lower frame portion 21 of the frame 2 where the mounting table 3 is disposed can be adjusted. The 1A side is raised, and the mounting table 3 is raised accordingly.

By providing the above-mentioned adjuster 9, for example, when there is a difference in height between the gas container transport trolley 1 and the cylinder cabinet (not shown), that is, when the bottom of the cylinder cabinet side is slightly higher, The loading platform 3 rises slightly. This prevents the cylinder B from being caught by the bottom of the cylinder cabinet when it slides on the mounting table 3 and the rollers 4 to move from the gas container transfer cart 1 to the cylinder cabinet, thereby enabling safe transport.

According to the trolley 1 for transporting gas containers of this embodiment, by having the above-mentioned structure, it is not necessary to change the structure of steel cylinders and cylinder cabinets like the conventional trolleys for transporting gas containers (see also Patent Document 1, Patent Document 1, 2). Thereby, it can be applied to the loading and unloading of cylinders of various cylinder cabinets regardless of the structure of the cylinder cabinet or the cylinder.

The procedure for carrying a new cylinder B into the cylinder cabinet (not shown in the drawing) and the procedure and function for carrying out the used cylinder B out of the cylinder cabinet using the gas container transportation trolley 1 of this embodiment will be described below.

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

Next, the plurality of rollers 4 are retreated by the sliding mechanism 41, and the bottom plate 3a of the mounting table 3 is brought into contact with the ground (floor surface) J. As shown in FIG. On this occasion, first, by operating the lifting handle 35 a provided on the lifting mechanism 35 , the mounting table 3 is temporarily raised. Next, the plurality of rollers 4 are moved to slide toward the rear end 1B side by operating a manual lever (not shown) provided in the slide mechanism 41 . Then, the bottom plate 3 a of the mounting table 3 is lowered to a position where it contacts the ground (floor surface) J. As shown in FIG.

Next, by loosening the screw 74, the detachable rod 72b of the fixed rod 72 disposed at the upper and lower two positions is removed from the back rod 72a.

Next, the 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. On this occasion, first, after placing the cylinder B on the bottom plate 3a, the side surface of the cylinder B is positioned close to the back bar 72a. In the gas container conveyance trolley 1 of this embodiment, the step difference between the loading platform 3 and the ground (floor surface) J becomes extremely small, so it is not necessary to lift the heavy steel cylinder B, that is, This can be easily mounted on the mounting table 3 .

Next, the detachable rod 72b is attached to the rear rod 72a so as to surround the side of the cylinder B, and the screw 74 is screwed into the screw hole 73 so that the end thereof abuts against the side of the cylinder B, thereby holding the cylinder B.

Next, the lifting handle 35a provided on the lifting mechanism 35 is operated to move the mounting table 3 on which the steel cylinder B is placed toward the upper limit side of the lifting range. In this state, by operating the manual lever 41a provided in the slide mechanism 41, the several rollers 4 are advanced toward the front-end|tip 1A side by the slide mechanism 41. As shown in FIG.

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

Then, the brake 6 is released by stepping on the pedal lever 61, and the gas container transport trolley 1 is manually advanced by operating the handle 8, and the cylinder B is transported 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.

Furthermore, by sliding and moving the steel cylinder B in the horizontal direction on the plurality of rollers 4, the steel cylinder B is moved to a predetermined installation position such as the bottom of the cylinder cabinet. At this time, the steel cylinder B slides and moves by the rotation of the plurality of rollers 4, so it can be easily placed on the bottom of the cylinder cabinet without lifting the steel cylinder B.

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

That is, at first, the rotation of the wheel 25 is limited by the brake 6, and the load is loaded by the lifting mechanism 35. When the table 3 is raised, the manual lever 41a provided on the slide mechanism 41 is operated, so that a plurality of rollers 4 are advanced by the slide mechanism 41, and each roller 4 protrudes from the hole 31 of the table 3 to the bottom plate 3a superior.

Then, make the used steel cylinder B slide and move from the cylinder cabinet, pull it out and straddle on a plurality of rollers 4 . Next, in the same manner as above, after the side surface of the cylinder B is positioned close to the rear rod 72a, the attachment and detachment rod 72b is attached to the rear rod 72a so as to surround the side surface of the cylinder B, and the screw 74 is screwed into the screw hole 73. Cylinder B is held by making the end abut against the side of cylinder B.

Next, after the gas container transport trolley 1 is manually advanced to the position for transporting the exhausted steel cylinder B, the rotation of the wheels 25 is restricted by the brake 6, and the lift handle 35a of the lift mechanism 35 is operated, thereby temporarily The mounting table 3 on which the steel cylinder B is mounted is raised. In this state, by operating the manual lever 41a provided on the slide mechanism 41, the plurality of rollers 4 are retreated toward the rear end 1B side by the slide mechanism 41. As shown in FIG. Then, the bottom plate 3 a of the mounting table 3 is lowered to a position where it contacts the ground (floor surface) J. As shown in FIG.

Next, by loosening the screw 74, the detachable rod 72b disposed at the upper and lower two positions is removed from the back rod 72a.

Then, the used steel 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.

Thereby, the used steel cylinder B can be easily carried out from the bottom of the cylinder cabinet having a certain height, and the steel cylinder B can be easily placed on the mounting table 3 of the trolley 1 for transporting the gas container, that is, placed on the bottom of the gas container transporting trolley 1. On the plurality of rollers 4 protruding from the holes 31 of the stage 3 .

In addition, the gas container conveying trolley 1 of this embodiment is not limited to the use of conveying the above-mentioned steel cylinder B, but can be widely used in the use of conveying heavy objects that are difficult to carry out and carry in by manpower.

<Efficacy>

As explained above, the trolley 1 for transporting gas containers according to the present embodiment adopts the following configuration: the mounting platform 3 of the steel cylinder B has a hole 31 opening on the bottom plate 3a for placing the steel cylinder B; The slide mechanism 41 moves horizontally along the stage 3 ;

With the above configuration, when the steel cylinder B is placed on the mounting table 3 of the gas container transport trolley 1, the rollers 4 can be moved back toward the rear end portion 3c of the mounting table 3 and the mounting table 3 can be brought into contact with the ground. Since the level difference between the mounting table 3 and the ground (floor surface) J is kept to a minimum, the steel cylinder B can be easily mounted on the mounting table 3 . On the other hand, when the steel cylinder B is carried out from the cylinder cabinet, a plurality of rollers 4 are advanced toward the front end portion 3b side of the mounting table 3, and the mounting table 3 is lowered so that the rollers 4 protrude from the hole portion 31. Since the steel cylinder B is thus placed on the plurality of rollers 4, the steel cylinder B can be easily carried out.

Therefore, it is not necessary to change the structure of the cylinder cabinet and the cylinder B itself, and it can be applied to the loading and unloading of the cylinder B of various cylinder cabinets without depending on the structure of the cylinder cabinet and the cylinder B, and does not require manpower. It is easy to carry out, carry out, and carry in the steel cylinder B which is a heavy object.

Embodiments of the present invention have been described above with reference to the drawings, but the present invention is not limited to the above-mentioned embodiments, and various changes can be made within the scope not departing from the gist of the invention.

[industrial availability]

The trolley for transporting gas containers of the present invention does not depend on the structure of cylinder cabinets and steel cylinders, and can be applied to the loading and unloading of steel cylinders in various cylinder cabinets, and can easily carry heavy steel cylinders without consuming effort. , move out, move in. Therefore, the trolley for conveying gas containers of the present invention is very suitable for carrying in and out steel cylinders to and from cylinder cabinets for supplying raw material gases such as semiconductor manufacturing equipment.

1: Trolley for transporting gas containers

1A: front end

1B: Backend

2: frame

3: Carrying table

3a: Bottom plate

3b: front end

3c: Rear end

3d: side wall

4: Roller

5: Damper

6: Brake

7: Anti-dumping aids

8: handle

9: Adjuster

21: Lower frame part

22: side frame

23: hook

24: support part

25: Wheels

31: Hole

35: Lifting mechanism

35a: lifting handle

51: upper end

61: foot-operated rod

71: Pillar

72: fixed rod

72a: Rear rod

72b: assembly and disassembly lever

72c: Inserting and unplugging metal fittings

73: screw hole

74: screw

91: Rod

92: lower end

B: cylinder

Claims (12)

A trolley for transporting gas containers is provided with: The frame is equipped with wheels for traveling with the gas container placed on it; The mounting table is provided on the frame, and moves in the vertical direction by an elevating mechanism in a state where the gas container is placed in the vertical position, thereby moving the gas container up and down; and The rollers are used to make the aforementioned gas container slide and move horizontally along the aforementioned loading platform; wherein, The mounting table has a hole opening on the bottom plate on which the gas container is mounted; The aforementioned roller train has a sliding mechanism for moving horizontally along the aforementioned loading table; and When the aforementioned rollers are located below the aforementioned loading table, the aforementioned rolling wheels will protrude from the aforementioned holes to the aforementioned bottom plate due to the descent of the aforementioned loading table. The trolley for transporting gas containers as described in Claim 1, wherein The plurality of holes are arranged on the mounting table; and A plurality of said roller trains are arrange|positioned so that it may correspond to said hole part. The trolley for transporting gas containers according to Claim 1 or 2, wherein, When the rollers slide and move to a position deviated from the position below the mounting table, the mounting table descends and touches the ground. The trolley for transporting the gas container as described in Claim 1 or 2 is equipped with: The damper is for absorbing the shock generated when the aforementioned loading table is lowered by the aforementioned lifting mechanism. The trolley for transporting gas containers as described in claim 1 or 2 further includes: The brake is to restrict the travel of the aforementioned gas container transport trolley. The trolley for transporting gas containers according to Claim 5, wherein the brakes are foot-operated. The trolley for transporting gas containers as described in claim 1 or 2 further includes: The anti-tipping aid is used to hold the aforementioned gas container. The trolley for transporting the gas container according to Claim 7, wherein the above-mentioned anti-dumping auxiliary device has: a fixing rod that holds the side of the gas container in a surrounding manner; and a screw that is screwed into the The screw hole of the fixing rod is provided so that the front end abuts against the side of the gas container. The trolley for transporting gas containers according to claim 7, wherein, The aforementioned fall prevention aid is provided with a hook for causing at least a part of the fall prevention aid to catch the hook when at least a part of the fall prevention aid is removed. The trolley for transporting gas containers as described in claim 1 or 2 further includes: a handle for manually moving the trolley for transporting gas containers. The gas container transport vehicle according to claim 1 or 2, wherein the frame is provided with an adjuster for raising and lowering at least a part of the frame. The gas container transporting trolley according to claim 1 or 2 further includes a rotary drive mechanism for rotating the wheels, so that the gas container transporting trolley can travel independently.

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