JP4980828B2 - Car wash pump mounting structure for traveling vehicles - Google Patents

Description

  The present invention relates to a structure for mounting a car wash pump for a traveling vehicle such as a tractor.

In a traveling vehicle such as a tractor, the car wash pump can be used by connecting it to a PTO shaft, but a connecting frame is adopted so that a working machine such as a rotary tiller can be easily attached and detached via a three-point link means. In this case, since the universal joint shaft is connected to the PTO shaft, it is difficult to directly connect the car wash pump to the PTO shaft.
Therefore, as disclosed in Patent Document 1, a reel-type pump frame having an outer periphery as a hose take-up portion is connected to a connection frame from which a work machine is removed, and a pump body is connected to a central space portion of the reel-type pump frame. The input shaft of the pump body is connected to the universal joint shaft via a claw clutch.
Japanese Utility Model Publication No. 2-112574

In the prior art, a pump frame is required for coupling the pump body, and the pump body is fixed to the pump frame via a seat plate, so that the claw clutch is interposed between the input shaft and the universal joint shaft. Therefore, the mounting structure of the car wash pump is complicated and the installation is very troublesome.
An object of the present invention is to provide a car wash pump mounting structure for a traveling vehicle that can solve the problems of the prior art.
SUMMARY OF THE INVENTION An object of the present invention is to provide a car wash pump mounting structure for a traveling vehicle that can be easily and easily mounted by simply connecting the input shaft of the car wash pump to the rear yoke of the universal joint shaft and stopping the rotation. .

Specific means for solving the problems in the present invention are as follows.
First, a connecting frame 5 capable of connecting the work machine 4 to the rear part of the traveling vehicle 2 via the three-point link means 3 is mounted, and the front yoke 7F of the universal joint shaft 7 is coupled to the PTO shaft 6 of the traveling vehicle 2. Then, the rear yoke 7R of the universal joint shaft 7 can be connected to the PIC shaft 8 of the work machine, and the joint holder 9 that rotatably holds the rear yoke 7R is supported on the connection frame 5 through the horizontal shaft 10 so as to be swingable. And
A car wash pump 11 is provided for the connection frame 5 instead of the work machine 4;
A connecting shaft 14 is provided on the input shaft 12 of the car wash pump 11, and the connecting shaft 14 is spline-fitted to the rear yoke 7R of the universal joint shaft 7 ,
The detent member 13 for rotation stopper against the joint holder 9 to wash wheel pump 11 provided, which is brought into contact with the side end face of the detent member 13 to the left and right side walls 9a having a horizontal axis 10 of the joint holder 9 It is characterized by that.

Secondly, the anti-rotation member 13 is formed of a plate material having a width in the vertical direction, and the upper and lower portions of the side end surfaces thereof are brought into contact with the left and right side walls 9a of the joint holder 9,
A restraint cable 38 is attached to the car wash pump 11, and the restraint cable 38 is hung on the connecting frame 5 to prevent the connecting shaft 14 from coming off from the rear yoke 7R .

Since the anti-rotation member 13 is formed of a plate material having a width in the vertical direction, if the vertical portions of the side end surfaces are brought into contact with the left and right side walls 9a provided with the horizontal shaft 10 of the joint holder 9, the car wash around the input shaft 12 is performed. The rotation of the pump 11 can be prevented.
The input shaft 12 of the car wash pump 11 may be formed so as to be directly splined to the rear yoke 7R. However, when a commercially available product has a diameter different from that of the PIC shaft 8 of the working machine, a connecting shaft 14 is adopted. It is preferable.

  According to the present invention, it is possible to attach the car wash pump input shaft to the rear yoke of the universal joint shaft simply and easily by simply rotating it.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In FIG. 1, a three-point link means 3 is connected to a tractor as a traveling vehicle 2, and a connecting frame 5 connected to the rear end of the three-point link means 3 is used instead of a work machine 4 such as a rotary tiller. The state which connected the car wash pump 11 so that attachment or detachment was possible is shown in figure.
The three-point link means 3 connected to the rear part of the tractor has one top link 3A at the center upper part and a pair of lower left and right lower links 3B, and is a connecting frame 5 formed in a triangular shape or A shape in front view. Are formed with an upper connecting portion 16U to which the top link 3A is connected and a left and right lower connecting portion 16D to which the left and right lower links 3B are connected, and the connecting portions 16U and 16D are formed by pins.

The connection frame 5 is formed with an upper engagement portion 19U and a left and right lower engagement portion 19D for engaging the upper engagement portion 18U and the left and right lower engagement portions 18D, respectively, of the work implement 4, and the upper cover The engaging portion 18U and the left and right lower engaged portions 18D are formed of pins, and the upper engaging portion 19U and the left and right lower engaging portions 19D are recessed portions with which the pins are engaged.
The upper engaging portion 19U can be fitted to the upper engaged portion 18U from below. When the upper engaging portion 19U is fitted to raise the connecting frame 5 and lift the work implement 4, the upper engaged portion 18U is centered. Then, the work implement 4 swings forward, and the left and right lower engaged portions 18D move from the rear to fit into the left and right lower engaging portions 19D.

  1 to 3, the connecting frame 5 is provided with a chicken crown portion 5b having an upper connecting portion 16U and an upper engaging portion 19U by fixing two plate members to the top of a chevron 5a obtained by bending a square pipe. The left and right base parts 5c having the lower connecting part 16D and the lower engaging part 19D are provided by fixing inverted U-shaped members to the left and right lower parts of the mountain-shaped member 5a, and a substantially L-shaped substrate at the inner lower end of each of the left and right base parts 5c. The horizontal end of 5d is connected, a beam material 5e made of a square pipe is provided in the middle of the mountain-shaped member 5a, the vertical end of the substrate 5d and the beam material 5e are connected, and the vertical portions of the left and right substrates 5d are spaced apart. The joint holder 9 is pivotally connected between the left and right substrates 5d.

The connecting frame 5 includes a lock means 22 having a lock member 21 for preventing the left and right lower engaged portion 18D engaged with the left and right lower engaged portion 19D, and retracting the lock member 21 from the retaining posture. Unlocking means 23 that can be held in a retracted posture is provided.
Each of the left and right lock members 21 of the lock means 22 has a hook shape that is open upward at the rear upper part, is pivotally supported by the lock shaft 24 so as to be rotatable about the horizontal axis, and is also provided by a coil spring 25 fitted to the lock shaft 24. Further, the locking member 21 is biased toward the retaining posture for engaging with the lower engaged portion 18D, and the lock member 21 prevents (locks) the lower engaged portion 18D from being detached.

The unlocking means 23 changes the posture of the left and right lock members 21 at the same time by pushing and pulling the interlock link 28 by pivotally supporting the interlock link 28 that connects the left and right lock members 21 and swinging. The lock operation lever 29 is supported by a bracket 30 protruding forward and downward from the beam member 5e via a horizontal shaft 31 so as to be swingable.
The lock operation lever 29 swings backward about the horizontal axis 31 to rotate the lock member 21 via the interlocking link 28 to change from the locked posture to the unlocked posture.

1-4, the joint holder 9 supports a rear portion of the universal joint shaft 7. The universal joint shaft 7 has a front yoke 7F that is spline-fitted to the PTO shaft 6 of the traveling vehicle 2, and a rear yoke 7R that can be spline-fitted to the PIC shaft 8 of the work machine 4 is rotatable to the joint holder 9 via a bearing 35. It is supported by.
The joint holder 9 is substantially U-shaped in plan view, and a horizontal shaft 10 is provided on each of the left and right side walls 9a so as to project outward. The horizontal shaft 10 is pivotally supported by a vertical portion of the left and right substrate 5d, and is supported. The direction of the rear yoke 7R can be changed around the horizontal axis 10, and when the work machine 4 swings forward about the upper engaged portion 18U, the PIC shaft 8 of the work machine 4 is moved to the rear yoke 7R. Can be easily fitted.

A commercially available car wash pump 11 is used, and an input shaft 12 protrudes forward from the pump body 11A, and a contact shaft 14 is fitted to the input shaft 12 and connected by a pin 12a. A male spline 14 is formed so as to be spline fitted to the rear yoke 7R.
An anti-rotation member 13 is disposed on the front surface of the pump main body 11A, and is fixed detachably by screwing the holding plate 11B.
The anti-rotation member 13 is formed by bending a sheet metal into a U-shape in side view, and its back wall is attached to the front surface of the pump body 11A around the input shaft 12, and the left and right widths of the upper and lower walls are left and right Both end surfaces have a width that contacts the left and right side walls 9 a of the joint holder 9.

The anti-rotation member 13 may be a plate material having a width in the vertical direction, and the side end face abuts against the side wall 9a at the upper and lower portions, whereby the pump main body 11A can be prevented from rotating with respect to the connecting frame 5, and the pump main body 11A is It can prevent trying to turn by the reaction of 12 rotations.
The anti-rotation member 13 may be provided so as to protrude upward from the pump main body 11A so as to contact the beam member 5e at least at two places on the left and right sides, or in this case, the rotation around the input shaft 12 of the pump main body 11A. It is good also as a structure which prevents that the joint holder 9 rock | fluctuates around the horizontal axis 10 not only.

Reference numeral 38 in FIG. 2 denotes a restraint line formed of a chain or a wire, which is attached to the pump main body 11A and is hung on the beam member 5e, so that the connecting shaft 14 does not come off from the rear yoke 7R. The rearward movement of the pump body 11A is restricted.
The car wash pump 11 is driven by the rotation of the rear yoke 7R just by connecting the input shaft 12 to the rear yoke 7R, and the rotation of the input shaft 12 does not react too much. Since the pump main body 11A does not need to be fixed to the connection frame 5, the assembly can be performed only by connecting the input shaft 12 to the rear yoke 7R.

In the present invention, the shape of each member and the positional relationship between the front, back, left, and right in the above embodiment are best configured as shown in FIGS. However, it is not limited to the said embodiment, A member, a structure can be variously deformed, and a combination can also be changed.
For example, although the connecting shaft 14 is used as a part of the input shaft 12, the car wash pump 11 may be made of a special product having the same diameter so that the input shaft 12 can be directly splined to the rear yoke 7R. The member 13 may be omitted, and the restraining cable 38 may serve as a rotation stop member.

1 is an overall side view showing an embodiment of the present invention. It is an enlarged side view. It is a rear view. It is a cross-sectional side view of the principal part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 Traveling vehicle 3 Three-point link means 4 Working machine 5 Connection frame 6 PTO shaft 7 Universal joint shaft 7F Front yoke 7R Rear yoke 8 PIC shaft 9 Joint holder 10 Horizontal shaft 11 Car wash pump 12 Input shaft 13 Non-rotating member 14 Connecting shaft

Claims (2)

A connecting frame (5) capable of connecting the work machine (4) via the three-point link means (3) is attached to the rear part of the traveling vehicle (2), and a universal joint is attached to the PTO shaft (6) of the traveling vehicle (2). The front yoke (7F) of the shaft (7) is connected, the rear yoke (7R) of the universal joint shaft (7) can be connected to the PIC shaft (8) of the work machine, and the rear yoke (7R) is held rotatably. The joint holder (9) to be supported is swingably supported on the connecting frame (5) via the horizontal axis (10),
A car wash pump (11) is provided in place of the work machine (4) for the connection frame (5),
A connecting shaft (14) is provided on the input shaft (12) of the car wash pump (11), and the connecting shaft (14) is spline fitted to the rear yoke (7R) of the universal joint shaft (7) .
Provided detent member for rotation stopper (13) to the wash wheel pump (11) with respect to the joint holder (9), the horizontal axis of the joint holder side end face of the detent member (13) (9) (10) A structure for mounting a car wash pump for a traveling vehicle, wherein the structure is in contact with the left and right side walls (9a) provided with the The anti-rotation member (13) is formed of a plate material having a width in the vertical direction, and the upper and lower portions of the side end surfaces thereof are in contact with the left and right side walls (9a) of the joint holder (9),
A restraint cable (38) is attached to the car wash pump (11), and the restraint cable (38) is hung on the connecting frame (5) to prevent the connecting shaft (14) from coming off the rear yoke (7R) . The car wash pump mounting structure for a traveling vehicle according to claim 1.

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