JPH0728480Y2 - Valve attachment / detachment device for high-pressure vessels - Google Patents

Description

TECHNICAL FIELD The present invention relates to a valve attaching / detaching device which is attached to a top opening of a high pressure container (cylinder) for filling oxygen, acetylene gas, LP gas or other high pressure gas.

BACKGROUND ART Various types of valve attachment / detachment devices for high-pressure vessels have been proposed and implemented, but they are not always satisfactory in use and handling, and particularly high-pressure vessels (cylinders), which are heavy items, are used. There are many things that are inconvenient to carry in and carry out to the valve attachment / detachment work position, or have problems in terms of workability.

The present invention has been made in view of the above circumstances, and can easily and quickly carry in and carry out a high-pressure container to a valve attachment / detachment work position, and the valve attachment / detachment work can be easily performed with excellent workability. An object is to provide a valve attachment / detachment device for a high-pressure container.

The configuration of the present invention, which is adopted to achieve the above-mentioned object, is
A support pillar and a low support leg are erected on the base so as to face each other, and a rotary drive device for a valve attaching / detaching spanner is disposed on the upper part of the support pillar, and the spanner is rotated by the rotary drive device. A lower pad of the main shaft is connected through a universal joint, a receiving pad is provided on the upper ends of the supporting legs, and a pressing pad provided to face the receiving pad is attached to the column so as to be horizontally movable. It is adapted to be moved forward and backward with respect to the receiving pad by a pressing device, and the receiving pad is composed of a plurality of polygonal mounts which are rotatable around a vertical axis protruding from the upper end of the support leg. It is formed on the outer side surface and is fixed to a plurality of mounting surfaces having different distances from the center of rotation of the vertical axis, respectively. By rotationally displacing the mounting base, different receiving pads can be selectively used. And wherein the door.

Embodiments of the present invention will be described below with reference to the drawings.

Reference numeral 1 is a base, and 2 is a roller conveyor arranged on the base 1, and is used to carry the high-pressure container B onto the base 1 to a valve attachment / detachment work position or to carry it out from the work position.

Reference numeral 3 is a pillar standing upright on one side of the base 1, and 4 is a supporting leg standing upright on the base 1 facing the pillar 3, which is lower than the pillar 3 and is higher than the floor surface. About 50-60 cm is desirable. The column 3 and the support leg 4 are arranged so as to face the roller conveyor 2 in a direction substantially perpendicular to the carrying direction. Prop 3
Is formed in a hollow body, and a balance weight 6 accommodated in the hollow portion 5 is suspended vertically by a chain 8 via a sprocket 7 provided at the upper end of the support column 3. A guide rail 9 extending vertically is fixed to the upper front surface of the support column 3.

Reference numeral 10 denotes a rotary base of a rotary drive unit to be described later, which is attached to the guide rail 9 via a linear bearing 11 so as to be vertically movable, and the end portion of the chain 8 is connected to the rotary drive unit 13 for attaching and detaching a valve to be described later. The total weight including the spanner 12 and other accessories is balanced with the balance weight 6. In addition to the balance weight 6, it is also possible to use an air cylinder or a spring balancer. 12 is a wrench for attaching / detaching a valve, 13 is a rotation driving device for the wrench 12,
14 and a speed reducer 15. A hollow output shaft 16 of the speed reducer 15 has a rotary main shaft 18 vertically slidably inserted through a key 17 at the lower end of the rotary main shaft 18 and a universal joint 19 and a connecting shaft 20. And a spanner 12 is attached to the lower end of the connecting shaft 20 via a pivot pin 21.

As shown in FIG. 2, the rotary drive device 13 has a structure in which the casing of the speed reducer 15 is connected to and supported by the movable table 10 via a support pin 25 arranged in parallel with the rotary main shaft 18. While being mounted on the moving table 10, a load cell 26 for detecting the tightening torque of the spanner 12 is interposed between the speed reducer 15 and the moving table 10. When the spanner 12 is tightened by the rotating main shaft 18, the reaction force of the load cell 26 becomes a supporting pin.
By using 25 acting as a branch and acting on the casing of the speed reducer 15, the spa weight is balanced with the balance weight 6. In addition to the balance weight 6, it is also possible to use an air cylinder or a spring balancer. 12 is a spanner for attaching / detaching a valve, 13 is a rotary drive device for the spanner 12, and an electric motor 14
And the reducer 15 and the key to the hollow output shaft 16 of the reducer 15
A rotary main shaft 18 is vertically slidably provided through the rotary main shaft 18, a universal joint 19 and a connecting shaft 20 are connected to the lower end of the rotating main shaft 18, and a spanner 12 is provided at the lower end of the connecting shaft 20 with a pivot pin 21. It is attached via.

As shown in FIG. 2, the rotary drive device 13 has a structure in which the casing of the speed reducer 15 is connected to and supported by the movable table 10 via a support pin 25 arranged in parallel with the rotary main shaft 18. While being mounted on the moving table 10, a load cell 26 for detecting the tightening torque of the spanner 12 is interposed between the speed reducer 15 and the moving table 10. When the spanner 12 is tightened by the rotating main shaft 18, the reaction force of the load cell 26 becomes a supporting pin.
By using 25 acting on the casing of the speed reducer 15 as a branch, the tightening torque applied to the spanner 12 is detected, and the electric motor 14 is stopped by a signal from an indicator not shown. . The spanner 12 is stopped at a fixed position with its opening facing in a certain direction, so
The limit switch 27 mounted on the upper surface of 15 is operated by the dog 28 slidably fitted to the rotary main shaft 18 only in the axial direction, and the electric motor 14 is stopped by the AND of the limit switch 27 and the signal from the load cell 26. It has become.

On the other hand, the upper end of the rotary main shaft 18 is connected to and supported by the wire rope 30 of the spring balancer 29 in a suspended state via a rotatable connecting fitting 31, and the rotary main shaft 18 and the universal joint 19 connected to the lower end thereof, the connecting shaft 20, Balanced with total weight including spanner 12 and other accessories. The spring balancer 29 is attached to a support arm 32 erected on the moving table 10. In addition, instead of the spring balancer 29, a balance weight,
The rotating main shaft 18 may be balanced by an air cylinder.

33 is a lever for temporarily holding the spanner 12, which is a universal joint 19
1 is attached to a mounting bracket 34 fixed to the rotatably rotatably only in the direction of the arrow through a pin 35, and a connecting shaft 20 is adsorbed and supported by a magnet 36 attached to the tip of the mounting bracket 34. The connecting shaft 20 is supported in a tilted posture, and the spanner 12 is temporarily separated from the attaching / detaching work position so that the spanner 12 does not interfere with the loading and unloading of the containers B ₁ and B ₂ .

Next, a means for fixing and holding the high-pressure container at the valve attachment / detachment work position on the base 1 will be described.

The fixed holding means is composed of a positioning receiving pad 40 mounted on the upper ends of the supporting legs 4, and a pressing pad 41 attached to the column 3 so as to face the receiving pad 40.

The receiving pad 40 is composed of three rubber pads, a large-diameter container pad 40a, a relay container pad 40b, and a small-diameter container pad 40c, and each pad 40a-40c has a flat contact surface, and the upper end of the support leg 4 is provided. It is attached to the outer surface of a rectangular parallelepiped mounting base 43 that is rotatably fitted to a vertical axis 42 that projects from the. As shown in FIGS. 5 and 6, the mounting base 43 is fitted eccentrically to the vertical axis 42, and the distance e from the center of the vertical axis 42 to one of the opposite side surfaces 44, 45 is e. ₁ and e ₂ (e ₁ <e ₂ ) are different, and a pad 40a is attached to the side surface 44,
A pad 40b is attached to the side surface 45. On the other hand, the small-diameter container pad 40c is attached to the tip of a rod 47 slidably inserted in a mounting hole 46 penetrating the mounting base 43 in parallel with the side surfaces 44 and 45, and the rod 47 is axially arranged. The three positioning holes 48 provided at different positions and the adjusting pin 49 fitted into the positioning holes 48 allow the amount of axial projection to be adjusted in three steps.

Further, the mounting base 43 has a positioning pin 50 penetrating slidably in the vertical direction, and the pin 50 is provided on the upper end of the support leg 4 on the vertical axis.
By selectively fitting three holes 51 to 53 provided on the concentric circles 42 and shifting the position by 90 degrees in the circumferential direction to fix the mounting base 43 to the support leg 4 in position, Pad 40
Any one of a to 40c is positioned to face the pressing pad 41.

The pressing pad 41 has two pads 55, 55 forming a V-shaped contact surface and two pads 56, 56 forming a flat contact surface, and these pads 55, 56 are on the front surface of the holding plate 57. Is stuck to. As shown in FIG. 3, the holding plate 57 has two back plates.
Book guide rods 58, 58 are provided so as to project. The guide rods 58, 58 are slidably supported by bearings 59, 59 fixed to both sides of the support column 3, so that the holding plate 57 is horizontal to the support column 3. The piston rod 61 of the air cylinder 50 attached to the support column 3 is connected to the back of the holding plate 57, and the holding plate 57 is horizontally reciprocated by the air cylinder 60. ing.

65 is a movable table used when handling a small-diameter container B ₃ or a horizontal container B ₄ , and its supporting arm 66 has a pivot pin 67.
It is attached to the lower part of the support column 3 via, and as shown in FIG. 4, it can be turned about 90 degrees in the direction of the arrow from the use position shown by the solid line with the pivot pin 67 as a fulcrum. The magnet 68 attached to the base end portion of the support arm 66 can be attracted to the support column 3 and fixed in a fixed position.

Next, an example of use of the valve attachment / detachment device having the above-described configuration will be described first for the large diameter container B ₁ .

The container B ₁ is carried in and placed on the roller conveyor 2 of the base 1 from the direction shown by the arrow A in FIG. At this time, the receiving pad 40 has its pad 40a positioned in advance so as to face the pressing pad 41. Further, the operator moves the moving table 10 balanced with the balance weight 6 up and down so that the position of the spanner 12 is changed to the container.
Approximately match the height of B ₁ . And pad container B ₁
The wrench 12 balanced with the spring balancer 29 is vertically moved in a state of being in contact with the spring 40a, and is finely adjusted to be engaged with the valve 71 screwed into the top opening 70 of the container B ₁ . Subsequently, the air cylinder 60 operates to move the pressing pad 41 forward, press the container B ₁ with the pads 55, 55 forming the V-shaped contact surface, and press the container B with both pads 55, 55 and the receiving pad 40a. Hold ₁ fixed. In this state, the rotary drive device 13 operates, and the spanner 12 is rotated by the rotary drive force of the rotary main shaft 18 to open the valve 71 at the top.
Attach to 70. When this valve is inserted, the reaction force of the tightening torque acts on the speed reducer 15 with the support pin 25 as a fulcrum, and this is transmitted to the load cell 26, so that when a preset tightening torque is applied to the valve 71, the load cell 26 The output voltage increases, and a signal is output from an indicator (not shown) connected to the load cell 26 to stop the electric motor 14. Then open the spanner 12 valve 71
, The pressing pad 41 is retracted to release the fixed holding, and the connecting shaft 20 is attracted to the magnet 36 in a tilted state as shown by the phantom line in FIG. 1 to move the spanner 12 away from the container B _1. After separating, the container B ₁ is carried out in the direction indicated by arrow B in FIG. At this time, since the contact surface of the receiving pad 40a is flat, the container B ₁ can be immediately carried out only by retracting the V-shaped pads 55, 55 of the pressing pad 41. Further, since the support leg 4 of the receiving pad 40 is low, and the receiving pad 40 is configured compactly and the front side of the spanner 12 is completely opened, the operator operates the spanner 12 and carries in / out the container B ₁ . Can be done easily.

Note that the same operation as described above is performed when the valve 71 is pulled out from the container B _1, and the rotation direction of the rotary spindle 18 is simply reversed.

Next, in the case of the medium diameter container B ₂ , the mounting base 43 of the receiving pad 40 is rotated 180 degrees around the vertical axis 42 to press the pad 40b.
The other operation is the same as above with the position facing 41.

On the other hand, in the case of small diameter container B ₃ , use the movable table 65,
The container B ₃ placed on the movable table 65 is received by the receiving pad 40c.
And the V-shaped pads 55, 55 of the pressing pad 41 are fixedly held and the valve 7
Perform step 1 of attachment / detachment. The position of the receiving pad 40c is the container
It can be adjusted in 3 steps according to the outer diameter of B ₃ .

Further, as shown by the phantom line in FIG. 3, in the case of the container B ₄ in which the valve 71 is provided on the side surface of the container body, the container B ₄ is placed on the movable table 65 and the receiving pad 40 Pads 40a-40c
Either of them and the flat pads 56, 56 of the pressing pad 41 can fix and hold the container B ₄ to perform the attachment / detachment work of the valve 71.

As described above, in the valve attaching / detaching device of the present invention, the support column 3 and the low supporting leg 4 are arranged opposite to each other on the base 1, and the receiving pad 40 for fixing and holding the high pressure container is provided on the upper end of the supporting leg 4. By providing the receiving pad 40 and the pressing pad 41 when the valve is attached and detached.
The upper part of the high-pressure container fixedly held by and the front side of the valve attachment / detachment wrench 12 are released, and the operator can easily operate the wrench and carry in / out the container, and the workability is excellent.

In addition, a plurality of receiving pads 40 are provided, and a polygonal mount 43 that can rotate around a vertical axis 42 that projects from the upper ends of the support legs 4 is provided.
, Which are formed on the outer surface of the vertical axis 42 and are fixed to a plurality of mounting surfaces having different distances from the center of rotation of the vertical axis 42, respectively, and different receiving pads 40 can be selectively used by rotationally displacing the mounting base 43. Therefore, if the receiving pad 40 is selected according to the outer diameter of the container, the container can be fixed and held easily and quickly. Moreover, since the receiving pad 40 has a structure in which it is rotationally displaced about the vertical axis 42, not only the position conversion operation is simple, but also the entire receiving pad device can be made compact and the supporting legs are lowered. Together, they are excellent in workability.

Further, as in the embodiment, the moving base 10 to which the rotary drive device 13 is attached is balanced by the balance weight 6, and the rotary main shaft 18 of the rotary drive device 13 is slidable up and down. This is achieved by the spring balancer 29 and other balancers. Balance spanner 12
Since the complete force of the total weight including the rotary spindle 18 and the spanner 12 and other auxiliary devices is applied during the vertical movement of the rotary spindle 18, the vertical movement of the spanner 12 connected to the lower end of the rotary spindle 18 can be performed extremely smoothly and easily. There is.

[Brief description of drawings]

1 is a partially longitudinal front view of a valve attachment / detachment device according to the present invention, FIG. 2 is a view taken along the line 2-2 of FIG. 1, and FIG. 3 is a view of FIG.
-3 is a sectional view taken along line -3, FIG. 4 is a view taken along line 4-4 of FIG. 1, FIG. 5 is an enlarged plan view of the receiving pad, and FIG. 6 is an exploded perspective view of the receiving pad. is there. 1 ... Base, 2 ... Conveyor, 3 ... Support, 4 ... Support leg, 10 ... Moving base, 12 ... Spanner for valve installation / removal 40 (40a-40c) ... Receiving pad 41 (55, 56) ...... Pressing pad 60 …… Air cylinder

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Shown 52-14515 (JP, U) Shown 58-42497 (JP, U) JP 52-47577 (JP, B2)

Claims (1)

[Scope of utility model registration request] 1. A support pillar and a lower support leg are erected on a base so as to face each other, and a rotary drive device for a valve attaching / detaching spanner is disposed on an upper part of the support pillar, and the spanner is the rotary drive device. Is connected to the lower end of the rotating main shaft via a universal joint, a receiving pad is provided on the upper ends of the supporting legs, and a pressing pad provided to face the receiving pad moves horizontally to the column. It is freely attached and can be moved forward and backward with respect to the receiving pad by a pressing device. The receiving pad is composed of a plurality and is rotatable about a vertical axis protruding from the upper end of the support leg. Formed on the outer surface of the rectangular mounting base and fixed to a plurality of mounting surfaces with different distances from the center of rotation of the vertical axis, and use different receiving pads by rotationally displacing the mounting base. it can A valve attachment / detachment device for a high-pressure container, which is characterized in that