JPS5930068Y2 - Backhoe coupling device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a coupling device for coupling a backhoe to a relatively small cargo handling vehicle, and its purpose is to provide a device that can be more firmly coupled with a simple mechanism.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. The coupling device according to the present invention connects a work machine platform 2 for mounting a backhoe 1 and a mounting frame 4 of a vehicle body 3. An upper connecting mechanism 5 and a lower connecting mechanism 6 are provided to connect the vehicle body 3 to the machine base 2.
A pair of left and right arms 7 protruding to the side, a pair of left and right engagement holes 8 formed in the frame 4 for removably locking the tips of the arms, and a pair of left and right engagement holes 8 into which the arms 7 are fitted. The lower connecting mechanism 6 includes a mounting frame 10 fixed to the lower part of the frame 4.
and a pair of left and right protrusions 11 for removably engaging the iron frame and the working machine stand 2.

The tip of the arm 7 has a tapered shape by forming an upper inclined portion 12 and left and right inclined portions 13, and a vertical hole 14 for passing the vertical shaft 9 through the tip. There is.

On the other hand, the hole wall of the engagement hole 8 is formed with an upper inclined part 15 and left and right inclined parts 16 for abutting and supporting the upper inclined part 12 and the left and right inclined parts 13 of the arm 7, and A hole 17 for fitting and locking the vertical shaft 9 is bored, and the vertical shaft 9 is removably fixed to the frame 4 with a split pin 18.

Further, the mounting frame 10 has the protrusion 11 attached to the mounting frame 10.
0" - mounted so that it can be moved downward, and the mounting frame 1
A collar retaining portion 19 is provided at the upper end of the 0.

On the other hand, at the lower end of the work machine stand 2, there is a
A pair of L lower kaeri tsuba 20.21 are fixed, -1 part kaeri tsuba 20 is removably engaged with the retaining part 19 of the mounting frame 10, and a pair of left and right small holes 22 are provided in the lower kaeri tsuba 21. is bored into the small hole 22, and the protrusion 11 is removably fitted into the small hole 22.

Note that 23 is a rigger for stabilizing the vehicle.

In the above configuration, in order to fix the work machine stand 2 to the mounting frame 4, first, the upper part of the work machine stand 2 is engaged with the retaining part 19 of the mounting frame 10 at the lower part of the work machine stand 2, and then the protrusion 11 is It fits into the small hole 22 of the lower return collar 21 to connect the lower parts of the work machine stand 2 and the frame 4.

On the other hand, on the upper part of the work machine stand 2, the tip of the arm 7 is fitted into the retaining hole 8 of the mounting frame 4, and then the vertical shaft 9 is fitted into the hole 14.17 of the frame 4 and work machine stand 2. split pin 1
Fixed at 8.

In addition, when fitting the tip of the arm 7 into the engagement hole 8, since the tip of the arm 7 is tapered, even if the center of the engagement hole 8 and the center of the arm 187 are slightly misaligned, it can be easily fitted. They can be fitted together, and furthermore, since the left and right inclined portions 13 and 16 come into contact with each other when fitted, there is almost no wobbling of the arm 7 in the left-right direction.

As is clear from the above description, the present invention is provided with an upper connecting mechanism and a lower connecting mechanism that connect a work machine platform for attaching a backhoe to a mounting frame of the vehicle body, and the upper connecting mechanism connects the work machine platform to the vehicle body. an arm protruding toward the main body; an engagement hole formed in the frame for removably locking the tip of the arm; and a hole drilled in the engagement hole of the frame; The arm includes a vertical hole drilled at the tip of the arm, and a vertical shaft for fixing the arm that is removably fitted into the vertical hole and the hole, and the lower connecting mechanism is fixed to the lower part of the frame. The arm is constructed of a mounting frame and a protrusion for removably engaging the iron frame and the work machine table, and the tip of the arm is formed with an upper slope part and a left and right slope part. The retaining hole has a tapered shape, and the hole wall of the retaining hole is formed with an upper inclined part and left and right inclined parts for abutting and supporting the upper inclined part and the left and right inclined parts of the arm.

Therefore, according to the present invention, in the upper connecting mechanism, the tip of the arm has a tapered shape by forming a -L side slope part and a left and right side slope part, and the hole wall of the retaining hole has a tip of the arm. Since the -L side sloped part and the left and right side sloped parts are formed to abut and support the two side sloped parts and the left and right side sloped parts, the center of the engagement hole and the center of the arm are slightly misaligned. Furthermore, when mating, the left and right sloped parts come into contact with each other, making it easy to determine the mating position of the vertical axis, and there is almost no wobbling in the left and right direction of the arm, which makes it easier for the work equipment platform to fit. This has excellent effects such as being able to firmly connect the base and the mounting frame, improving the safety of cargo handling operations using a backhoe, and facilitating the connection operation.

[Brief explanation of the drawing]

Fig. 1 is a side view of a cargo handling vehicle using a coupling device which is an embodiment of the present invention, Fig. 2 is an enlarged schematic plan view showing the upper coupling mechanism, Fig. 3 is a side view thereof, and Fig. 4. FIG. 2 is a perspective view showing the lower connecting mechanism. 1: Backhoe, 2: Work equipment stand, 3: Vehicle body, 4: Mounting frame, 5: Upper connection mechanism, 6: Lower connection mechanism, 7
: Arm, 8: Engagement hole, 9: Vertical shaft, 10: Mounting frame, 11
: Protrusion, 12: Upper inclined part, 13: Left and right inclined parts, 14
: Vertical hole, 15: Upper inclined part, 16: Left and right inclined parts, 17
: Hole, 18: Cotter pin.

Claims (1)

[Scope of utility model registration request] An upper connecting mechanism 5 and a lower connecting mechanism 6 are provided to connect the backhoe mounting work machine base 2 and the mounting frame 4 of the vehicle body 3, and the upper connecting mechanism 5 connects the machine base 2 to the vehicle body 3.
An arm 7 protruding from the frame 4, an engagement hole 8 formed in the frame 4 for removably locking the tip of the arm 7, and an engagement hole 8 formed in the retaining hole of the frame 4. hole 17,
A vertical hole 14 bored at the tip of the arm 7 and the vertical hole 1
4 and an arm fixing vertical shaft 9 removably fitted into the hole 17, and the lower connecting mechanism 6 includes a mounting frame 10 fixed to the lower part of the frame 4, and an iron frame 10. A protrusion 11 for removably engaging with the work machine stand 2
The tip of the arm 7 has an upper inclined portion 1.
2 and the left and right inclined portions 13 are formed to form a tapered shape, and the hole wall of the engagement hole 8 has a hole for abutting and supporting the upper inclined portion 12 and the left and right inclined portions 13 of the arm 7. A backhoe coupling device characterized in that a side slope part 15 and a left and right side slope part 16 are formed.