JPH0422825Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application The present invention relates to an improvement in the joint between a stirrer with a flexible shaft and a rotary output shaft of a chemical liquid pressure pump to prevent sedimentation of the chemical in a chemical liquid tank during chemical liquid dispersion. It is something.

Prior Art As this type of joint, for example, the one shown in FIG. 2 is used. This has a fitting ring 31 on one side that fits onto the rotating output shaft 30 of the chemical pump, and a rotating shaft 3 having a square hole 33 on the other side.
5 is rotatably supported by a bearing cylinder 34.

A prismatic rod 32 provided at an end of a flexible wire 43 housed in a support hose 42 of a flexible shaft 41 having a stirring blade at the other end is fitted into the square hole 33, so that the flexible wire 43 and the rotating shaft 35 are connected and rotate together.
36 is a lock pin that holds down the support hose end of the flexible wire 43, and 37 is a fixing screw that fixes the rotary output shaft 30 to the fitting ring 31.

Such a stirrer with a flexible shaft, for example,
As shown in the figure, a rotary output shaft 30 of a chemical liquid pump 40 loaded on a narrow cargo platform such as a light four-wheel truck
The stirring blade 45 is submerged in the chemical liquid tank 44, and the pump 40 is connected to the pump 40 while preventing sedimentation of the chemical liquid.
It is used, for example, when a chemical solution is force-fed to the spray rod 47 and sprayed on crops.

However, the height of the opening 46 of the chemical liquid tank 44 is much higher than the height of the rotational output shaft 30 of the chemical liquid pump, and
are arranged close to each other, so the flexible shaft 41
The bending angle has to be steep, and at the sharply curved portion 47, a stretching force acts locally on the flexible wire, causing inconveniences such as the flexible wire breaking in a short period of time.

Furthermore, depending on the twisting direction of the built-in flexible wires, the direction of rotational force transmission of the flexible shaft is limited to either the left or the right. The stirrer is
Therefore, you must be very careful when purchasing or selling an agitator or chemical pump, and even if you try to overcome an emergency situation by using another model when cutting wire, etc., you cannot use it because the direction of rotation is reversed. There were some inconveniences when I didn't have it.

Purpose of the invention The present invention was developed in response to the above-mentioned circumstances.
The object of the present invention is to disclose a joint for a stirrer that can change the connecting direction of a flexible shaft by a predetermined angle and that can be used in connection with any stirrer with a flexible shaft for left or right rotation. be.

Structure of the invention The gist of the invention is to provide a bearing tube consisting of a straight tube section with both ends open and a branch tube section branching from the straight tube section, and a bearing tube that is rotatably supported in the branch tube section of the bearing tube. and a driven shaft rotatably supported in the straight pipe section, and the drive shaft has a fitting ring on the opening side of the branch pipe section. , can be attached to and detached from the rotational output shaft of the chemical pump and can rotate integrally with the output shaft, and a driving gear is provided on the branch side of the branch pipe section, and on the other hand,
The driven shaft has a connecting portion at both ends that can be connected to a flexible wire end of a flexible shaft that rotationally drives the chemical solution stirring blade, and an intermediate portion of the driven shaft includes:
A joint for a chemical liquid stirrer with a flexible shaft, characterized in that a driven gear that meshes with the driving gear is provided around the periphery. Hereinafter, embodiments will be described in detail with reference to the drawings.

FIG. 1 shows an embodiment of the joint according to the present invention, and the joint has openings 2a and 2 at both ends.
It has a T-shaped bearing tube 1 consisting of a straight tube section 2 having a diameter of A through hole 4 having a square cross section is provided in the straight pipe portion 2 of the bearing pipe 1.
A driven shaft 4 having an axis a along the axial direction is rotatably supported by bearings 11, 11.

On the other hand, in the branch pipe section 3, a drive shaft 5 is rotatably supported by bearings 12, 12. A serration portion 5a is carved in the portion of the drive shaft 5 that protrudes from the branch pipe opening 3a, and a fitting ring 6 that fits onto the rotation output shaft 30 of the chemical pump 40 is attached to the serration shaft. It is fitted through a boss hole 6a drilled in the one side closed portion.
6b is a fixing screw, and 6c is a fixing screw for integrally rotating the fitting ring 6 and the rotation output shaft 30.

Further, at the other end of the drive shaft 5, as a drive gear 7,
A bevel gear is provided, and a bevel gear serving as a driven gear 8 fitted around the outer periphery of the center of the driven shaft 4 so as to be rotatable integrally with the driven shaft 4 meshes with the bevel gear. 13, 13 are lock pins provided near both ends of the straight pipe part 2, and the large diameter stepped part 13a and the straight pipe part 2
The lock pin 13,
13 is biased toward the axis of the straight pipe section 2.

In the present joint having such a configuration, the fitting ring 6 is fixed to the rotating output shaft 30 of the chemical liquid pump 40, and when using a stirrer with a flexible shaft,
Depending on the direction of rotation in which it will be used, either the right or left connection is selected, the lock pin 13 is lifted in the direction of the arrow, and the end of the support hose is inserted through the straight pipe opening 2b. Along with this, flexible wire 4
3 also fits into the through hole 4a of the driven shaft 4, allowing them to rotate together. The lock pin is fitted into a recess 42a provided in the support hose to prevent the flexible shaft from coming off.

In the above embodiment, bevel gears are used as the driving gear and the driven gear, but other known combinations such as a worm and a worm wheel may be used. Further, the angle that the branch pipe part makes with respect to the straight pipe part does not necessarily have to be a right angle, and the branch pipe part can be provided at a desired angle.

Effects The joint for a stirrer with a flexible shaft of the present invention allows the connection angle of the flexible shaft to be changed significantly with respect to the direction of the output shaft when the flexible shaft must be used with extreme bending. Because of this, no strain is placed on the flexible shaft, and no cutting or uneven rotation occurs. Furthermore, the joint of the present invention can be used on either the left or right side depending on the direction of rotation of the flexible wire, so when replacing a chemical liquid pressure pump or a stirrer, the direction of rotation is reversed.
Even if combinations cannot be used, the joint of the present invention makes it possible, and the range of equipment selection can be greatly expanded. Furthermore, there is an excellent effect that there is no room for waste such as when an item is transported in the wrong direction of rotation during transactions.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention in a state of use. Figure 2 shows 1 of the prior art.
It is a sectional view showing an example. FIG. 3 is an explanatory diagram showing an example of use of a conventional stirrer with a flexible shaft.

Claims (1)

[Scope of utility model registration request] a bearing tube consisting of a straight tube section with both ends open and a branch tube section branching from the middle of the straight tube section; a drive shaft rotatably supported in the branch tube section of the bearing tube;
and a driven shaft rotatably supported in the straight pipe part, and a fitting ring detachably attached to the rotary output shaft of the chemical pump on the opening side of the branch pipe part of the drive shaft. A drive gear is provided on the side, and on the other hand, a connection portion is provided at both ends of the driven shaft with a flexible shaft that rotatably holds a chemical solution stirring blade at one end, and a connecting portion is provided at one end of the driven shaft, and a connecting portion is provided at one end of the driven shaft. A joint for a chemical liquid agitator, characterized in that a driven gear that meshes with the driving gear is provided around the periphery.