JP3424106B2 - Oscillating pipe jumping device of oscillating valve type high viscosity fluid pump - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swing valve jumping device of a swing valve type high viscosity fluid pump for sucking and discharging a high viscosity fluid such as concrete in a hopper. It is about. 2. Description of the Related Art As a suction / discharge valve for switching between a high-viscosity fluid such as concrete in a hopper to be sucked / discharged by a high-viscosity fluid pump, a conventional slide valve type and a swing valve have been known. Some are of the form. The latter oscillating valve type suction / discharge valve includes:
Conventionally, a configuration as shown in FIGS. 4 and 5 is known. That is, two suction / discharge ports 2 are provided at the lower portion of the front side wall 1a.
At the front side of a hopper 1 provided side by side, two fluid pressure feeding cylinders 3 are horizontally installed corresponding to the two suction / discharge ports 2, and a piston 4 housed in the fluid pressure feeding cylinder 3 is mounted. A piston of a main cylinder (not shown) is integrally connected via a rod 5 so that the pistons 4 in the two cylinders 3 are alternately advanced and retracted by alternately expanding and contracting the two main cylinders. It is. On the other hand, in the hopper 1, an S-shaped oscillating tube 6 whose rear end is rotatably penetrated to the back of the hopper 1 is housed, and a sealing ring 7 is attached to the front end of the oscillating tube 6, The sealing ring 7 can be made to coincide with the two suction / discharge ports 2 alternately, and the front wall 1a of the hopper 1
, The base end of a connecting shaft 8 rotatably supported on the front side wall 1a is fixed, and an operating lever 9 is integrally attached to a distal end of the connecting shaft 8, and two operating levers 9 are provided. The swinging tube 6 is swung right and left about the axis of the connecting shaft 8 via the operating lever 9 and the connecting shaft 8 by the alternately expanding and contracting operation of the swing cylinders 10 and 11. Reference numeral 12 denotes a transport pipe. When the suction / discharge valve of the conventional high-viscosity fluid pump is operated to suction / discharge the high-viscosity fluid 13 in the hopper 1, the swing pipe 6 is swung in the high-viscosity fluid 13 in the hopper 1. When the front end of the oscillating tube 6 is positioned at one of the suction and discharge ports 2, the piston 4 of the fluid pressure feeding cylinder 3 on the side of the suction and discharge port 2 is moved forward to raise the suction height so far. At the same time that the viscous fluid 13 is discharged through the oscillating pipe 6, the piston 4 is retracted in another fluid pressure feeding cylinder 3 so that the highly viscous fluid 13 in the hopper 1 is sucked. Is switched to another suction / discharge port 2 so that the piston 4 of the fluid pressure feeding cylinder 3 on the side of the suction / discharge port 2 is advanced, and at the same time, the high viscosity fluid 13 is sucked into the other fluid pressure feeding cylinder 3. Repeat the operation It is to perform the switching of suction and discharge of the viscous fluid. As described above, the highly viscous fluid 13 in the hopper 1
Is pumped through the oscillating pipe 6 by alternately advancing and retracting the pistons 4 in the two fluid pressure feeding cylinders 3.
It is necessary to remove the high-viscosity fluid 13 remaining in the oscillating pipe 6 when the pressure feeding operation of Step 3 is completed. Conventionally, when removing the high-viscosity fluid 13 remaining in the oscillating tube 6, the connection portion 14 between the oscillating tube 6 and the transport tube 12 is removed. There is a risk that the area around the rear end of the rocking tube on the outside of the hopper 1 may be soiled, and there is a problem that much labor is required to take out the high-viscosity fluid 13 from the inside of the rocking tube 6. A cleaning apparatus has been recently proposed that can remove and clean the high-viscosity fluid 13 in a short time and does not scatter the high-viscosity fluid 13 to be removed around. 299600
issue). That is, as shown in FIG. 6, the oscillating tube is located at a position away from the two suction / discharge ports 2 on the front side wall 1a of the hopper 1 and at an upper position which is the oscillating radius position of the front end of the oscillating tube 6. An opening 15 corresponding to the aperture of the motor 6 is provided, and a motor 16 is installed at a position on the axis of the connecting shaft 8 projecting from the front wall 1a of the hopper. And a clutch 17 for switching the transmission of the rotational force by the motor 16 to the connecting shaft 8 and the transmission of the oscillating power by the operation lever, and after the operation of feeding the high-viscosity fluid 13 is completed, the clutch 17 is moved. Then, the output shaft of the motor 16 and the connecting shaft 8 are integrated with each other, and then the motor 16 is driven so that the rocking tube 6 is jumped upward through the connecting shaft 8 as shown by a two-dot chain line. Rotate the front end When the front end of the oscillating tube 6 communicates with the opening 15, the elbow-shaped cleaning tube 18 is pressed from the outside of the hopper 1 through the opening 15 and connected to the oscillating tube 6. The filling 19 is put in the washing pipe 18 and the filling 19 is moved in the rocking pipe 6 and the transport pipe 12 by the high-pressure fluid, thereby cleaning the inside of the rocking pipe 6 and the transport pipe 12. is there. [0008] However, in the case of the above-mentioned recently proposed cleaning device, the motor 16 for popping up the swinging tube 6 is located on the extension of the axis of the connecting shaft 8. A large space for installing the motor 16 must be secured in front of the hopper front side wall 1a, which has been a cause of obstructing the demand for compactness. Accordingly, the present invention provides a rocking tube jumping-up device which can contribute to the demand for compactness by requiring only a small space for flipping up the rocking tube when cleaning the rocking tube. What you want to do. [0010] In order to solve the above-mentioned problems, the present invention provides a connecting shaft fixed to a rocking tube arranged in a hopper and having one end protruding outside through a front wall of the hopper. A motor having a drive sprocket on an output shaft at a position in front of the hopper in a swing valve type high-viscosity fluid pump configured to swing the swing tube to the left and right by rotating via an operation lever, Installed so as to be located on one side of the connection shaft, a driven sprocket is rotatably mounted at the tip of the connection shaft, both sprockets are connected by a chain, and the driven sprocket and the connection shaft or A clutch is provided between the driven sprocket and the operating lever, and a clutch for allowing the slider to slide in and out of the operating lever and the connecting shaft is provided between the driven sprocket and the operating lever. An intermediate portion of the operation arm is attached to a rod end of an operation cylinder fixed to the wall so as to extend in the front-rear direction, and a tip end of the operation arm is fitted into a receiving groove formed in the slider, thereby extending and retracting the operation cylinder. By moving the operating arm in the front-rear direction, the tip of the operating arm slides the slider fitted to operate the clutch, and the clutch operating device is mounted on the other side of the connection shaft. It is configured to be located so that it is located. When the swing tube is flipped up for cleaning, the operating cylinder of the clutch operating device is extended to move the operating arm forward, whereby the slider is moved by the operating arm to the driven sprocket side. Then, the motor is driven in a state where the clutch is switched from the operation lever side to the driven sprocket side so that the driven sprocket and the connecting shaft are connected and integrated. As a result, the rotational force of the motor is transmitted to the connecting shaft via the drive sprocket, the chain, the driven sprocket, and the clutch, so that the rocking tube is turned around the connecting shaft and jumped up. Since the motor is on the side of the connecting shaft, a large space is not required. Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 3 show an embodiment of the present invention. Like the conventional high-viscosity fluid pump having a swing valve type suction / discharge valve shown in FIG. To 2
An S-shaped swing pipe 6 is swingably housed in a hopper 1 provided with two suction / discharge ports 2 arranged side by side, and two fluid pressure feeding cylinders 3 connected to the two suction / discharge ports 2 are horizontally moved. And the connecting shaft 8 fixed in the middle of the swing tube 6 is rotated right and left by two swing cylinders 10 and 11 via the operating lever 9 at a position protruding from the hopper front side wall 1a. The oscillating tube 6 can be swung to the right and left in the hopper 1, and the oscillating tube 6 is provided above the front side wall 1 a of the hopper 1.
An opening 15 slightly larger than the diameter of the oscillating tube 6 is provided at the position of the oscillating radius of the hopper 1 so that the washing tube 18 can be attached to the opening 15. The high-viscosity fluid 13 is prevented from flowing out of the hopper 1 at a position in front of the front side wall 1a of the hopper 1 with the connecting shaft 9 projecting forward through the front side wall 1a. A motor 21 having a drive sprocket 20 on the output shaft is installed on one side of the motor shaft, and a driven sprocket 23 is rotatably mounted on the foremost portion of the connection shaft 8 so that the rotational force of the motor 21 From the driving sprocket 20 to the driven sprocket 23 via the chain 22, and the driven sprocket 23 and the connecting shaft 8 are connected between the driven sprocket 23 and the operation lever 9. The clutch 24 is used to switch between transmission of the rotational force by the motor 21 and transmission of the oscillating power by the operation lever 9 to the connection shaft 8 by physically connecting the operation lever 9 and the connection shaft 8 integrally. Further, a clutch operating device 25 is mounted on a side of the connection shaft 8 protruding forward from the hopper front side wall 1a on a side opposite to the motor installation side. More specifically, the motor 21 provided on one side of the connecting shaft 8 is disposed so as to avoid the swing cylinders 10 and 11 connected to the operating lever 9, and the motor 21 is provided via the support frame 26. The drive sprocket 20 is fixed to the hopper front side wall 1a and the output shaft of the motor 21 is attached. The chain 22 is hung between the driven sprocket 23 and the driven sprocket 23 rotatably attached to the foremost part of the connection shaft 8. By turning, the rotational force of the motor 21 is transmitted from the driving sprocket 20 to the driven sprocket 23 via the chain 22. On the other hand, a spline sleeve 27 is fixedly provided at an intermediate portion of the connecting shaft 8 so that a spline 28 on an inner peripheral surface is meshed with the spline sleeve 27. Spline 31 provided
A slider 30, which is adapted to mesh with a spline 29 on the outer peripheral surface, is slidably fitted along the connection shaft 8, and further, the slider 30 is slid to the driven sprocket 23 side. The spline 32 which is made to mesh with the spline 28 on the inner peripheral surface is
The spline 28 on the inner peripheral surface of the slider 30 and the outer periphery of the boss portion of the driven sprocket 23 are integrally connected to the outer peripheral surface of the boss portion of the driven sprocket 23, and the slider 30 is slid toward the hopper front side wall 1a. At the same time as the surface is disengaged from the spline 32, the operating lever 9 side is connected to the connecting shaft 8 so that the swinging power of the operating lever 9 is connected from the boss of the operating lever 9 via the slider 30 and the spline sleeve 27. The slider 30 is slid toward the driven sprocket 23 while being transmitted to the shaft 8, so that the spline 29
And the spline 31 on the inner peripheral surface of the boss portion of the operating lever 9 are disengaged, and at the same time, the spline sleeve 2 of the connecting shaft 8 is disengaged.
7 is connected to the spline 32 on the driven sprocket 23 side, and the rotational force of the motor 21 is applied to the driven sprocket 23
The clutch 24 is configured to be transmitted to the connection shaft 8 through the spline 32, the slider 30, and the spline sleeve 27 from the clutch. Further, the clutch operating device 25 mounted on the other lateral portion of the connecting shaft 8 in the left-right direction moves the operating cylinder 33 in the front-rear direction so as to avoid the swing cylinders 10 and 11 connected to the operating lever 9. The operation cylinder 33 is fixed to the hopper front side wall 1a via the support frame 34, and the rod end of the operation cylinder 33 has a front end formed on the outer peripheral surface of the front end of the slider 30. An intermediate portion of an operation arm 36 fitted to the groove 35 is attached, and a guide sleeve 37 extending in the front-rear direction is fixed to a distal end of the operation arm 36, and the guide sleeve 37 is attached to the hopper front side wall. 1a is slidably fitted and supported on the outer peripheral portion of a guide rod 38 protruding in the front-rear direction, and the operating cylinder 33 is operated to expand and contract to thereby guide the guide slot. Bed 37 the operating arm 36 while sliding supported along a guide rod 38 is moved in the longitudinal direction, the clutch 2 by the sliding of the slider 30
4 can be performed. When performing a viscous fluid pumping operation,
As shown by the solid line in FIG. 1, the slider 30 of the clutch 24 is located at a position where the spline 29 on the outer peripheral surface is engaged with the spline 31 on the boss portion of the operation lever 9, and the spline 28 on the inner peripheral surface is the spline 32 of the driven sprocket 23.
And has been separated. Therefore, the swing cylinders 10, 1
1 are alternately extended and contracted, whereby the swinging power of the operating lever 9 is transmitted to the connecting shaft 8 via the slider 30 and the spline sleeve 27, and the swinging tube 6 swings right and left around the axis of the connecting shaft 8. Let me do. On the other hand, when the viscous fluid pumping operation is completed and it becomes necessary to clean the inside of the
In a state in which the driving of 0, 11 is stopped, first, the operating cylinder 33 of the clutch operating device 25 is extended,
1 and 3, the operation arm 36 at the position indicated by the solid line.
Is displaced forward as indicated by a two-dot chain line, whereby the spline 28 on the inner peripheral surface of the slider 30 meshes with the spline 32 of the driven sprocket 23, and the spline 29 on the outer peripheral surface of the slider 30 is
1 At this time, the operation arm 36 whose distal end is fitted into the receiving groove 35 of the slider 30 is slidably supported by the guide sleeve 37 at the distal end along the guide rod 38.
The force can be transmitted stably without eccentricity. Next, the motor 21 is driven to rotate the drive sprocket 20, and the rotational force is transmitted to the driven sprocket 23 via the chain 22. As a result, the rotational force of the driven sprocket 23 is
Since the swing tube 6 is rotated by a predetermined angle around the eccentricity of the connecting shaft 8 because the swing tube 6 is transmitted to the connecting shaft 8 via the slider 30 and the spline sleeve 27, the hopper front side wall 1a
Is jumped up to the position of the opening 15. When the swing tube 6 is flipped up, the washing tube 18
Is moved forward, the tip of the washing tube 18 is pressed against the front end of the oscillating tube 6 through the opening 15 to connect the same, the filling 19 (see FIG. 6) is put into the washing tube 18 and the filling 19 is moved by the high-pressure fluid. The inside of the swing tube 6 is cleaned. In the above, the clutch operating device 25 for operating the clutch 21 and the motor 21 for providing the driving force for flipping the swinging tube 6 is located on the side of the connecting shaft 8 projecting from the hopper front side wall 1a. Therefore, it is not necessary to secure a wide space in front of the hopper front side wall 1a as compared with the method of FIG. 5 in which the motor is arranged on the extension of the axis of the connecting shaft 8. In the above embodiment, the case where the motor 21 is installed on the left side of the connecting shaft 8 and the operating cylinder 33 is installed on the right side of the connecting shaft 8 in FIGS. 2 and 3 are shown. It is needless to say that the relationship may be reversed left and right, and that various changes may be made without departing from the spirit of the present invention. As described above, according to the swinging pipe jumping device of the swinging valve type high-viscosity fluid pump of the present invention, one end of the hopper is fixed to the swinging pipe arranged in the hopper. At the front position of the hopper in the swing valve type high viscous fluid pump which swings the swing tube to the left and right by rotating the connection shaft protruded to the outside through the front side wall through the operation lever, A motor having a drive sprocket on the output shaft is installed so as to be located on one side of the connection shaft, and a driven sprocket is rotatably mounted on the tip of the connection shaft, and both sprockets are connected by a chain. And a clutch that slides a slider to attach and detach the driven sprocket and the connecting shaft or the operating lever and the connecting shaft, between the driven sprocket and the operating lever. An intermediate portion of the operating arm is attached to a rod end of an operating cylinder fixed to the front side wall of the hopper so as to extend in the front-rear direction, and a distal end of the operating arm is fitted into a receiving groove formed in the slider. The clutch operating device is configured such that the operating arm is moved in the front-rear direction by the expansion and contraction operation of the operating cylinder to thereby slide a slider fitted with the distal end of the operating arm to operate the clutch. Since it is installed so as to be located on the other side of the connecting shaft, the swinging tube can be flipped up in a narrow space on the front wall of the hopper, contributing to downsizing of the pump. It has an excellent effect of being able to do it.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cut-away side view showing an embodiment of a rocking pipe jumping-up device of a rocking valve type high-viscosity fluid pump according to the present invention. FIG. 2 is a view taken in the direction of arrows II-II in FIG. FIG. 3 is a cut-away plan view of FIG. 2; FIG. 4 is a cut-away side view showing an example of a conventional swing valve type suction / discharge valve. FIG. 5 is a view taken in the direction of arrows VV in FIG. 4; FIG. 6 is a schematic view showing a recently proposed rocking tube cleaning device. [Description of Signs] 1 Hopper 1a Front wall 6 Swinging tube 8 Connecting shaft 9 Operating lever 20 Drive sprocket 21 Motor 22 Chain 23 Follower sprocket 24 Clutch 25 Clutch operating device 30 Slider 33 Operating cylinder 35 Receiving groove 36 Operating arm

Continuation of the front page (56) References JP-A-5-10251 (JP, A) JP-A-62-82281 (JP, A) JP-A-4-69691 (JP, U) JP-A-2-39580 (JP (58) Fields investigated (Int. Cl. ⁷ , DB name) F04B 9/00-15/08 F14B 53/00-53/22

Claims (1)

(57) [Claim 1] By rotating a connecting shaft fixed to a rocking pipe arranged in a hopper and having one end protruding outside through a front wall of the hopper through an operation lever. A motor having a drive sprocket on an output shaft is located at one side of the connection shaft at a position in front of the hopper in a swing valve type high-viscosity fluid pump configured to swing the swing tube to the left and right. In addition to the above, the driven sprocket is rotatably attached to the distal end of the connection shaft, the two sprockets are connected by a chain, and the attachment / detachment of the driven sprocket and the connection shaft or the operation lever and the connection shaft is performed by a slider. A clutch is provided between the driven sprocket and the operation lever, and is further fixed to the front wall of the hopper so as to extend in the front-rear direction. Attach the middle part of the operation arm to the rod end of the slider, fit the tip of the operation arm into the receiving groove formed in the slider, and move the operation arm in the front-rear direction by the expansion and contraction operation of the operation cylinder. A clutch operating device configured to operate a clutch by sliding a slider fitted with the tip of the operating arm is provided so as to be located on the other side of the connection shaft. A swing valve jumping device for a swing valve type high viscosity fluid pump.