JPH10310261A - Concrete bucket air supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a concrete bucket air supply device capable of efficiently supplying compressed air. SOLUTION: This concrete bucket air supply device has an air feed pipe pedestal 14 attached to a concrete bucket 2 in such a way as to face a traveling truck 5, and an air feed pipe 13 is mounted on an air feed pipe mount 30 provided on the traveling truck 5 in such a way as to move in the horizontal direction crossing the moving direction of the traveling truck 5. A return spring 60 activating the air feed pipe mount 30 toward one side is fitted over a spring guide bar 57 provided on one side of the air feed pipe mount 30, and a positioning mechanism 66 is mounted at the end of a connecting bar 65 provided on the other side of the air feed pipe mount 30, and when the traveling truck 5 is located alongside the concrete bucket 2 the air feed pipe 13 and the air feed pipe pedestal 14 are made to face each other on the same axis by the operation of the positioning mechanism 66.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete bucket air supply device.

[0002]

2. Description of the Related Art Conventionally, as an example of a concrete transport system for constructing a dam, as shown in FIGS. 8 and 9, a transferer 1 and a concrete bucket 2 suspended on a trolley of a cable crane are used. is there.

The transferer 1 is mounted on a rail 3 laid from a batcher plant installed on one side of the dam weir to be constructed to a landing site of a cable crane installed in the width direction of the dam weir. And a concrete hopper 6 mounted on the traveling vehicle 5.

The concrete hopper 6 has a hopper body 7 having an open top, and a chute 8 provided at the bottom of the hopper body 7 and having an outlet at one end of the hopper body 7. Is put into the hopper body 7 from the top, and the concrete inside the hopper body 7 is sent out from the chute 8 to the outside.

The concrete bucket 2 includes a bucket body 9 having an open top, a double-opening gate 10 provided at the bottom of the bucket body 9, and an air cylinder for opening or closing the gate 10. 11
And an air tank 12 for accumulating air pressure to be applied to the air cylinder 11. An electromagnetic switching valve (not shown) is provided in a flow path for applying air pressure from the air tank 12 to the air cylinder 11. ing.

When the concrete is transported using the transfer car 1 and the concrete bucket 2 shown in FIGS. 8 and 9, the hopper body 7 of the concrete hopper 6 is used.
The transfer truck 1 is stopped in the batcher plant so that the top opening is located immediately below the concrete outlet, the concrete kneaded in the batcher plant is put into the concrete hopper 6, and then the traveling vehicle 5 is operated. To transfer the transfer car 1 from the batcher plant to the place where the cable crane arrives and departs.
Move along.

Then, the transfer car 1 is stopped so that the chute 8 of the concrete hopper 6 is located immediately above the top opening of the bucket main body 9 of the concrete bucket 2 suspended at a predetermined position of the landing site of the cable crane. Let it.

After confirming that the gate 10 of the concrete bucket 2 is closed, the concrete in the concrete hopper 6 of the transferer 1 is put into the bucket body 9 via the chute 8.

After the concrete is put into the bucket body 9, the trolley of the cable crane is moved in the width direction of the dam dam so that the concrete bucket 2 is located directly above the casting location, and the concrete bucket 2 is moved with respect to the trolley. Descend.

Next, the gate is opened by switching the electromagnetic switching valve, and the concrete is discharged from the bucket body 9 to the casting location.

[0011]

However, in the concrete transfer system shown in FIGS. 8 and 9, since air pressure is applied to the air cylinder 11 of the concrete bucket 2, the air is transferred to the air tank 12 provided in the concrete bucket 2. Refill compressed air with concrete bucket 2
Is connected to the air supply pipe connected to the air tank 12 with the hose communicating with the discharge port of the air compressor mounted on the transfer car 1 in a state where is located at the departure / arrival place of the cable crane. Since the connection is manually performed by a worker, the compressed air cannot be efficiently replenished to the air tank 12 of the concrete bucket 2.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a concrete bucket air supply device capable of efficiently supplying compressed air to a concrete bucket.

[0013]

In order to achieve the above object, a concrete bucket air supply device of the present invention includes an air supply pipe and an air supply coupler formed by an air supply pipe seat that can be fitted to the air supply pipe. A mounting bracket for the air supply pipe receiving seat is provided at a predetermined position of a concrete bucket which can be located on a side of the traveling bogie, and the air supply pipe receiving seat is directed toward the traveling bogie by the mounting bracket. A plurality of restoring springs arranged on the side of the support are supported so that displacement in the vertical direction is allowed, and an air supply pipe mounting base that can move in the moving direction of the traveling vehicle is provided on the side of the traveling vehicle that transports concrete, An actuator for mounting the air supply pipe on the air supply pipe mounting base so as to be movable in a horizontal direction intersecting the moving direction of the traveling vehicle, and moving the air supply pipe with respect to the air supply pipe mounting base; A spring guide bar provided on the air supply pipe mounting base, a base end of which is pin-connected to one side surface of the air supply pipe mounting base, extending in the moving direction of the traveling vehicle, and movably supported by the traveling vehicle; The restoring spring that urges the air supply pipe mounting base toward the tip end of the spring guide bar is fitted to the outside, and a connection bar is provided on the other side of the air supply pipe mounting base, the base end of which is pin-coupled and extends in the moving direction of the traveling vehicle. A positioning mechanism having a positioning lever movably supported by a truck and capable of abutting against a stopper member provided on the concrete bucket and a biasing spring for biasing the positioning lever in the direction of the air supply pipe mounting base is provided with a positioning mechanism of the connection bar. When the traveling cart is located on the side of the concrete bucket at the tip end, the air supply pipe and the air supply pipe receiving seat are aligned coaxially by the operation of the positioning lever that contacts the stopper member. It is configured to stop the supply pipe mount the facing position.

In the concrete bucket air supply device of the present invention, the traveling vehicle is moved in a direction approaching the concrete bucket, and the relative position where the air supply pipe provided on the traveling vehicle and the air supply tube receiving seat provided on the concrete bucket face each other. Is reached, the positioning lever of the positioning mechanism provided on the traveling abutment comes into contact with the stopper member provided on the concrete bucket, and the air supply pipe and the air supply pipe receiving seat are positioned coaxially opposite each other. The mounting stand stops.

Thereafter, when the actuator is operated to move the air supply pipe with respect to the air supply pipe mounting base, the front end of the air supply pipe fits into the air supply pipe receiving seat provided on the concrete bucket.

[0016]

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

FIGS. 1 to 7 show an embodiment of a concrete bucket air supply device according to the present invention. In the drawings, portions denoted by the same reference numerals as those in FIGS. 8 and 9 represent the same components. ing.

In the concrete bucket air supply apparatus shown in FIGS. 1 to 7, an air supply coupler 15 constituted by an air supply pipe 13 and an air supply pipe receiving seat 14 which can be fitted to the air supply pipe 13 is provided.
The air supply pipe receiving seat 14 is arranged at a predetermined position of the concrete bucket 2 located on the side of the traveling vehicle 5 of the transfer car 1 for transporting concrete, and the side of the traveling vehicle 5 is An air supply pipe 13 that can move in a horizontal direction intersecting the movement direction is provided with an air supply pipe receiving seat 14.
Are arranged coaxially with each other.

The air supply pipe receiving seat 14 is attached to the mounting bracket 1 provided on the side surface of the pillar 2 a at one corner of the concrete bucket 2.
6 and attached to the concrete bucket 2 via an elevating frame 17 provided on the mounting bracket 16 so as to be movable up and down.

The mounting brackets 16 extend in parallel with each other at a vertical interval to the side of the column 2a, extend in the vertical direction in parallel with the column 2a, and extend in the vertical direction. Has two pins 18 and 18 projecting downward.

The lifting frame 17 is attached to the mounting bracket 1.
6 is vertically fitted to the upper and lower positions of the pin 18 with the lower flange 16a interposed therebetween so as to be able to ascend and descend in the up and down direction, and the air supply pipe receiving seat 14 is attached to the upper part on the side facing the traveling vehicle 5, and the middle part is A funnel-shaped pin guide 19 is provided, which is arranged on the same line as the air supply tube receiving seat 14 and whose diameter decreases from the front to the rear, and a striker 20 for a proximity switch is attached to a lower portion thereof.

Further, a cushion rubber 21 is fitted on the upper end of the pin 18 located above the upper flange 17a of the lifting frame 17, and the pin 18 located below the upper flange 17a is restored to the middle position. A spring 22 is fitted, and the lifting frame 17 is formed so as to be allowed to be displaced in the vertical direction and to be held at a predetermined height position by the restoring spring 22 and the cushion rubber 21.

The air supply pipe receiving seat 14 is bolted to the elevating frame 17 via an outer peripheral flange 23 at the distal end, and a plurality of through-holes arranged at equal intervals in the circumferential direction around the front axis portion. An air supply pipe 26 communicating with the air tank 12 is connected to a rear end of a through hole 25 extending rearward in communication with the vent hole 24, and a valve seat 27 is provided on a surface of the outer peripheral flange 23. Is attached.

The striker 20 is supported so as to be able to move horizontally to the traveling carriage 5 side, is connected to an air cylinder 28 provided behind the striker 20 via a coil spring 29, and is driven by the air cylinder 28 to move in the front-rear direction. Moving.

On the other hand, a traveling vehicle 5 for transporting concrete
On the lower surface of the side of the concrete bucket 2, a guide frame 31 capable of movably supporting an air supply pipe mounting base 30 described later is provided extending in a direction parallel to the moving direction of the traveling vehicle 5.

The guide frame 31 is provided at predetermined intervals and is provided with three short pillar members 31a bolted to the lower surface of the traveling carriage 5, and a traveling carriage fixed to the lower end of the pillar member 31a. 5, a horizontal member 31b extending in a direction parallel to the moving direction of the carriage 5 and having a nylon plate 32 at a predetermined position on the upper surface.
3 is provided coaxially.

The air supply pipe mounting base 30 has upper and lower rollers 34 which roll along both side surfaces of the horizontal member 31b of the guide frame 31 and one side surface of a part of the traveling vehicle 5 and the traveling vehicle. 5, a box-shaped mounting base body 35 having open front and rear surfaces in a horizontal direction perpendicular to the moving direction of 5,
A movable frame 36 is fitted inside the mounting base body 35 so as to be slidable in the front-rear direction.

At the rear of the mounting base 35, the mounting base 35
Two air cylinders 37 arranged in parallel with each other at a predetermined interval in the width direction of the
The moving frame 36 is connected to the ends of the rods 37a
And the movable frame 36 can be driven in a horizontal direction orthogonal to the moving direction of the traveling vehicle 5 by moving the rods 37a, 37a forward and backward.

Further, the air supply pipe 13 is provided at the center of the moving frame 36.
Is provided so as to be able to advance and retreat with respect to the moving frame 36,
A coil spring 38 is fitted between the movable frame 3 and the moving frame 36.

The air supply pipe 13 is provided at the center of the moving frame 36.
An air supply pipe main body 39 including a hollow main body front portion 39a and a main body rear portion 39b that are movably inserted in the front-rear direction of the moving frame 36; a poppet 40 inserted into a front end portion of the main body front portion 39a; A coil spring 41 is mounted between the poppet 40 and the rear part 39b of the main body, and can urge the poppet 40 forward.

A main body rear portion 39b of the air supply pipe main body 39 is slidably supported by the moving frame 36 via a bearing 42, has a flange 43 on the outer periphery of a front end portion, and has a rear end portion with the air supply pipe main body 39. Is provided with a retaining collar 44 for preventing the moving frame 36 from slipping forward from the moving frame 36.
It has a round bar-shaped projection 45 extending toward the front part 39a of the main body, a plurality of ventilation holes 46 around the base of the projection 45, and an air supply port 47 communicating with the ventilation hole 46 at the rear end. Have.
An air supply hose 48 is connected to the air supply port 47.

Further, a main body front portion 39a of the air supply pipe main body 39 is provided.
Has a large-diameter portion 49 whose rear end is bolted to the flange 43 of the rear portion 39b of the main body, and a large-diameter portion 49 protruding from the front end of the movable frame 36 at the front end. Is fitted with a valve seat 50.

The coil spring 38 is mounted between the rear end surface of the large diameter portion 49 of the main body front portion 39a of the air supply pipe main body 39 and the moving frame 36, and attaches the air supply pipe main body 39 forward (to the concrete bucket 2 side). It is going to take off.

The poppet 40 has a front end 39a at the front end.
Is formed so as to be able to contact the valve seat 50 and close the front end opening 51 of the main body front portion 39a, and has a round bar-shaped projection 52 protruding forward at the axis of the front end portion, and at the rear end side. A plurality of sliding members 5 arranged at equal intervals in the circumferential direction, radially extending in the radial direction, and formed to be slidable along the inner peripheral surface of the main body front portion 39a in the longitudinal direction of the main body front portion 39a.
3 and a stepped hole 54 that opens rearward at the axis.

The poppet 40 is inserted into the front part 39a of the main body such that the stepped hole 54 surrounds the projection 45 of the rear part 39b of the main body, and fits between the stepped hole 54 and the base of the projection 45 of the rear part 39b of the main body. It is urged by the provided coil spring 41 and is pressed against the valve seat 50 of the main body front part 39a.

A pin 55 projecting toward the traveling vehicle 5 is provided below the portion of the moving frame 36 to which the air supply pipe 13 is attached.
The pin 55 is disposed at a position coaxially opposed to the pin guide 19 provided on the concrete bucket 2 when the traveling vehicle 5 stops at a predetermined position on the side of the concrete bucket 2. Have been.

The air cylinder 37 is operated to move the moving frame 36.
Is pushed out in a direction approaching the traveling carriage 5, the pin 55 is inserted into the pin guide 19, and a misalignment occurs between the pin 55 and the pin guide 19 (the shaft center of the air supply pipe 13 and the supply center). In the case where the axis of the tracheal seat 14 does not coincide with the axis, the pressing force of the air cylinder 37 acts on the slope of the pin guide 19 via the pin 55, and the pin guide 19
, Forcing the pin 55 to move in the direction in which the axis coincides with the axis.

Further, a proximity switch 56 is mounted at a position corresponding to a position directly below the pin 55 of the mounting base body 35, and when the traveling vehicle 5 stops at a predetermined position on the side of the concrete bucket 2, the proximity switch 56 is moved to the concrete bucket 2 side. When the striker 20 is pushed out in a direction approaching the proximity switch 56 by operating the air cylinder 28 for the striker 20 and arranging the proximity switch 56 so that the proximity switch 56 is It is designed to detect that the tracheal seat 14 is coaxial.

Further, a hole 33 provided on one side of the column member 31a in the moving direction of the traveling carriage 5 with a base end being pin-connected to one side surface of the mounting base body 35 of the air supply pipe mounting base 30 is provided. A spring guide bar 57 is provided extending therethrough and movably supported by the hole 33.

At a predetermined position on the distal end side of the spring guide bar 57, there is provided a stop member 58 which is externally fitted to the spring guide bar 57 and which is bolted between the traveling carriage 5 and the horizontal member 31b of the guide frame 31. A restoring spring 60 having spring seats 59 at both ends is externally fitted to the portion of the spring guide bar 57 located between the stop member 58 and the column member 31a at the intermediate position in the longitudinal direction of the horizontal member 31b. 6
The stopper 61 fitted at a predetermined position on the distal end side of the spring guide bar 57 to determine the set length of 0
No. 0 spring guide bar 57 is fixed by a spring seat 59 on the distal end side, and the air supply pipe mounting base 30 is
Can be urged toward the distal end side of the spring guide bar 57.

Reference numeral 62 denotes a cushion rubber provided on the side surface of the stop member 58 on the side of the restoring spring 60.

Further, the other end of the air supply pipe mounting base 30 is pin-connected at its base end and extends in the direction of movement of the traveling vehicle 5 through the hole 33 provided in the column member 31a on the other side. Is provided on the traveling vehicle 5 by a cam follower 63 and supported by rollers 64 so as to be movable in the moving direction of the traveling vehicle 5.

At the distal end of the connecting bar 65, a positioning mechanism 66 for determining the stop position of the air supply pipe mounting base 30 is provided.

The positioning mechanism 66 is capable of abutting against a stopper member 67 provided on the side surface of the concrete bucket 2 on the side of the traveling carriage 5, and the positioning lever 68 is rotated in the direction of the air supply pipe mounting base 30. And a biasing spring 69 that biases the spring.

The positioning lever 68 has a base connected to the distal end of the connecting bar 65 with a pin so as to be rotatable in a horizontal plane, and has a roller 70 at the distal end.

The positioning lever 68 is connected to the base pin 7.
The roller contact surface 73a of the connecting bar tip member 73 where the stopper 72 provided in the vicinity of the roller 1 and the roller 70 at the tip can contact.
The rotation range is limited by the above.

The biasing spring 69 has a distal end connected to the vicinity of the distal end of the positioning lever 68 via a pin, and has a base connected to the connecting bar 6 on the air supply tube 13 side of the positioning lever 68.
5, is fixed via bolts to adjust the length,
Normally, the base of the positioning lever 68 is
Is configured to be able to bias the positioning lever 68 in the rotation direction that comes into contact with the positioning lever 68.

The tension force of the biasing spring 69 is such that the tension applied to the connecting bar 65 due to the torque generated in the positioning lever 68 by the tension force is the reaction force of the restoring spring 60 fitted to the spring guide bar 57. Is set to exceed.

In the above state, that is, when the base of the positioning lever 68 is in contact with the stopper 72, the roller 70 provided at the tip of the positioning lever 68 is supplied from the outer peripheral surface of the air supply pipe 13 side. Provided on the concrete bucket 2 side such that the roller 70 provided at the tip of the positioning lever 68 abuts when the traveling carriage 5 is located at a predetermined distance from the concrete bucket 2 and the distance to the axis of the trachea 13. The distance from the contact surface of the roller 70 of the stopper member 67 to the axis of the air supply tube receiving seat 14 is the same.

That is, when the traveling vehicle 5 is stopped at a predetermined position on the side of the concrete bucket 2, the roller 70 at the tip comes into contact with the stopper member 67 provided on the concrete bucket 2 and is urged by the urging spring 69. When the positioning lever 68 is set in a state where the base of the positioning lever 68 is in contact with the stopper 72, the air supply pipe mounting base 30 is located at a position where the air supply pipe 13 is coaxially opposed to the air supply pipe receiving seat 14. Stops.

Incidentally, the range of the stop position of the traveling vehicle 5 on which the positioning mechanism 66 works effectively is determined by the spring guide bar 57.
Is determined by the allowable bending length of the restoring spring 60 fitted in the spring.

When the traveling carriage 5 is overrun, the positioning lever 68 rotated beyond the dead point is urged by the urging spring 69 so that the roller 64 comes into contact with the roller contact surface 73a. The positioning mechanism 66 can be prevented from rotating before reaching the contact limit and being damaged.

Hereinafter, the operation of the concrete bucket air supply device shown in FIGS. 1 to 7 will be described.

When the compressed air is replenished from the traveling vehicle 5 to the air tank 12 of the concrete bucket 2, the traveling vehicle 5 is moved to a predetermined position where the concrete bucket 2 is suspended, and the traveling vehicle 5 is moved to the concrete bucket 2. Stop to the side of.

When the traveling vehicle 5 enters a range of a predetermined stop position on the side of the concrete bucket 2, a roller 70 provided at the tip of a positioning lever 68 of a positioning mechanism 66 provided on the traveling vehicle 5 moves to the concrete bucket 2. It contacts the stopper member 67 provided.

At this time, the inertia of the running is
And so on, so that the dynamic torque applied to the positioning lever 68 may exceed the static torque of the positioning lever 68 due to the tensile force of the biasing spring 69,
In such a case, the positioning lever 68 slightly rotates to the side opposite to the air supply pipe.

However, as described above, the tension applied to the connecting bar 65 due to the torque generated in the positioning lever 68 by the tensile force of the urging spring 69 causes the spring guide bar 57
Since the force exceeds the reaction force of the restoring spring 60 fitted to the positioning lever 68, the positioning lever 68 is immediately restored to the normal position where the base thereof contacts the stopper 72 by the tensile force of the biasing spring 69. As a result, the air supply pipe 13 and the air supply pipe receiving seat 14 come to face each other.

Thus, due to the difference in the stop position between the traveling vehicle 5 and the concrete bucket 2, the air supply pipe 13
When the misalignment occurs between the air supply pipe receiving seat 14 and
A spring guide bar 57 connected to one side of the air supply pipe mounting base 30
The urging force of the restoring spring 60 fitted on the air supply pipe mounting base 30
By the action of the positioning mechanism 66 provided at the distal end of the connecting bar 65 connected to the other side, the air supply pipe 13 and the air supply pipe receiving seat 14 always face each other.

Then, the air cylinder 28 provided below the elevating frame 17 of the air supply pipe receiving seat 14 provided on the concrete bucket 2 is operated in the direction in which the rod moves forward, and the striker 20 is pushed out toward the traveling carriage 5 to move Trolley 5
A proximity switch 56 provided below the mounting base body 35 of the air supply pipe mounting base 30 provided on the side detects that the air supply pipe mounting base 30 faces the front of the air supply pipe receiving seat 14.

Thereafter, the air cylinder 37 provided on the mounting base body 35 is operated in the direction in which the rod 37a moves forward, and the movable frame 36 is pushed out to the concrete bucket 2 side.
A pin 55 provided at the lower portion of the moving frame 36 is inserted into a pin guide 19 provided below the air supply pipe receiving seat 14 of the elevating frame 17 on the concrete bucket 2 side. If there is a vertical misalignment between them, the pin guide 19 is displaced in a direction coaxial with the pin 55 by the pressing force of the air cylinder 37 acting on the slope of the pin guide 19 via the pin 55. The axis of the air supply pipe 13 is adjusted so as to completely coincide with the axis of the air supply pipe receiving seat 14 even in the vertical direction.

Further, when the movable frame 36 is pushed out, the front surface of the main body front portion 39a of the air supply pipe main body 39 is brought into contact with the air supply pipe receiving seat 1.
4 and is in contact with the valve seat 27 provided on the front surface of the poppet 40 by the coil spring 38 so that the air supply does not leak. Since the front end of the poppet 4 comes into contact with the front surface of the air supply pipe receiving seat 14, the coil spring 41 is compressed,
0 is pushed back so as to retreat with respect to the main body front portion 39a, and the front end opening 51 of the main body front portion 39a closed by the poppet 40 is opened.

When the front end opening 51 of the main body front portion 39a of the air supply pipe main body 39 is opened, the air supplied from the compressed air source (not shown) into the air supply pipe main body 39 through the air supply hose 48 is supplied to the rear of the main body. Vent hole 46 provided at the tip of 39b
Through the tip opening 51 of the body front part 39a from the four circumferences of the poppet 40, flows into the air supply pipe 26 on the concrete bucket 2 side through the ventilation hole 24 of the air pipe receiving seat 14, and flows into the air tank 12 of the concrete bucket 2 Supplied.

At this time, the coil spring 38 fitted on the outside of the air supply pipe main body 39 urges the air supply pipe 13 to the air supply pipe receiving seat 1.
Since the air is urged in four directions, the air supply pipe 13 and the air supply pipe
Is firmly fitted.

The proximity switch 56 is connected to the striker 20.
Contact with the coil spring 2 provided on the striker 20 side.
9 is compressed and the striker 20 retreats, so that no trouble is caused.

After the air supply operation is completed, the air supply pipe mounting base 3
When the air cylinder 37 provided on the mounting base body 35 is operated in the direction in which the rod 37a moves backward, and the moving frame 36 is moved in the direction away from the concrete bucket 2,
Tip of main body front 39a of air supply pipe main body 39 and poppet 40
Of the projection 52 is separated from the tracheal seat 14 and the poppet 40 retracted by the air supply tube seat 14 with respect to the main body front portion 39a is restored by the repulsive force of the coil spring 41. The opening 51 is closed and the supply of air is stopped.

At the same time, the air supply pipe 13 is restored to its original position with respect to the moving frame 36 by the repulsive force of the coil spring 38 mounted on the air supply pipe main body 39.

As described above, in the concrete bucket air supply device shown in FIGS. 1 to 7, the air supply hose 48 communicating with the air compressor mounted on the traveling carriage 5 of the transferer 1 is connected to the concrete bucket 2. Can be automatically connected to and supplied with air to the air supply pipe 26 communicating with the air tank 12 on the side, so that compressed air can be efficiently supplied to the air tank 12 of the concrete bucket 2 efficiently. be able to.

It should be noted that the air supply device for a concrete bucket of the present invention is not limited to the above-described embodiment, and it goes without saying that various changes can be made without departing from the spirit of the present invention.

[0069]

As described above, in the concrete bucket air supply device of the present invention, the air supply pipe receiving seat is attached to the concrete bucket toward the traveling vehicle, and is moved in the horizontal direction intersecting the traveling direction of the traveling vehicle. Attach the air supply pipe to the air supply pipe mounting base provided on the traveling vehicle so as to fit the restoring spring that biases the air supply pipe mounting base to one side on the spring guide bar provided on one side of the air supply pipe mounting base, Since the positioning mechanism is attached to the tip of the connection bar provided on the other side of the air supply pipe mounting base, the alignment between the air supply pipe and the air supply pipe seat that constitutes the air supply coupler is automatically set, and from the traveling vehicle An excellent effect that compressed air can be efficiently replenished to the concrete bucket can be obtained.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of an embodiment of a concrete bucket air supply device of the present invention.

FIG. 2 is a view taken in the direction of arrows II-II in FIG.

FIG. 3 is a view taken in the direction of arrows III-III in FIG. 2;

4 is a view taken in the direction of arrows IV-IV in FIG. 3;

FIG. 5 is a side view of a concrete conveyance system to which the concrete bucket air supply device shown in FIG. 1 is applied.

FIG. 6 is a sectional view of the air supply coupler related to FIG. 1;

FIG. 7 is a sectional view showing a fitted state of the air supply coupler shown in FIG. 6;

FIG. 8 is a side view showing an example of a conventional concrete transport system.

FIG. 9 is a view as viewed in the direction of arrows IX-IX in FIG. 8;

[Explanation of symbols]

 2 Concrete Bucket 5 Traveling Cart 13 Air Supply Tube 14 Air Supply Tube Receptacle 15 Air Supply Coupler 16 Mounting Bracket 22 Restoring Spring 30 Supply Air Tube Mounting 37 Air Cylinder (Actuator) 57 Spring Guide Bar 60 Restoring Spring 65 Connection Bar 66 Positioning Mechanism 67 Stopper member 68 Positioning lever 69 Bias spring

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kimio Nishito 2-2-1 Otemachi, Chiyoda-ku, Tokyo Ishikawashima-Harima Heavy Industries, Ltd. (72) Inventor Kazuki Kanaya 4-chome, Nihonbashi Honcho, Chuo-ku, Tokyo 12-20 Sato Kogyo Co., Ltd. (72) Katsuo Hiromoto 3-21-25 Marunouchi, Naka-ku, Nagoya City, Aichi Prefecture Sato Kogyo Co., Ltd. (72) Inventor Tsutomu Kitano Marunouchi, Naka-ku, Nagoya City, Aichi Prefecture 3-21-25 Sato Kogyo Co., Ltd. (72) Inventor Yoshinobu Haneda 1st place in front of Kotoshouin, Sakurashita, Fukushima City, Fukushima Prefecture Kyosan Industry Co., Ltd. First Kochiin-mae 1 Kyosan Kogyo Co., Ltd.

Claims (1)

[Claims] 1. An air supply coupler comprising an air supply pipe and an air supply pipe receiving seat that can be fitted to the air supply pipe, wherein the air supply pipe is provided at a predetermined position of a concrete bucket that can be located on a side of a traveling vehicle. A mounting bracket for the receiving seat is provided, and the mounting bracket allows the air supply tube receiving seat to face the traveling vehicle and to be displaced in the vertical direction by a plurality of restoring springs arranged on the side of the air feeding tube receiving seat. And a supply pipe mount that can be moved in the traveling direction of the traveling vehicle is provided on a side surface of the traveling vehicle that transports concrete, and the air supply tube intersects the traveling direction of the traveling vehicle with the supply pipe mounting table. An actuator is mounted on the air supply pipe mount so that the air supply pipe can be moved in the horizontal direction and the air supply pipe is moved relative to the air supply pipe mount. How to move A spring guide bar extending in the direction and movably supported by a traveling carriage is provided, and a restoring spring for urging the air supply pipe mounting base toward the tip end of the spring guide bar is externally fitted to the spring guide bar. A positioning bar which is provided on the other side surface with a connecting bar extending in the direction of movement of the traveling vehicle with a base end pin-coupled thereto, movably supported by the traveling vehicle, and capable of abutting against a stopper member provided on the concrete bucket; A positioning mechanism having an urging spring for urging the traveling truck in the direction of the air supply pipe mounting table is provided at the distal end of the connection bar, and the positioning mechanism abuts against the stopper member when the traveling vehicle is positioned beside the concrete bucket. Concrete, characterized in that the operation of the lever stops the air supply pipe mount at a position where the air supply pipe and the air supply pipe receiving seat face each other coaxially. Packet air supply apparatus.