JPH0327057Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a plow attachment/detachment device that can detachably attach a snow removal plow to the front of a construction equipment carrier, a truck, or the like.

(Prior art) Conventionally, construction machinery carriers or trucks, etc.
During the season when there is no snow, it is used exclusively for transporting loads, and when it snows, it may be equipped with a snow removal plow and used as a snowplow. For this reason, it is desirable that the snow removal plow be easy to attach and detach.

(Problem to be solved by the invention) However, the snow removal plow, which is a heavy object, has to be connected to a transport vehicle by moving the plow 8 as shown in Fig. 10.
Left and right 2 of plow bracket 9 attached to the back side of
The through hole 41 of the mounting bracket 42, which is a locking member installed at the location, must be aligned with the through hole 43 of the mounting bracket 44, which is a locking member installed on the chassis frame 24 of the transport vehicle. After this alignment, bolts and nuts 45 and 46 are tightened and fixed. In other words, such work is
In order to align the through holes 41 and 43, heavy objects may be moved back and forth little by little, or the plow 8 and plow bracket 9 may be hoisted up with a crane or the like to adjust their position relative to the transport vehicle. Since it is a handling operation, there is a problem that the work is extremely complicated and time-consuming.

In view of the above points, the present invention effectively solves the problems of the prior art, facilitates the alignment of the plow and the transport vehicle, has a simple configuration, ensures reliable handling, and allows frequent use of the plow. It is an object of the present invention to provide a plow attachment/detachment device that enables easy attachment/detachment work and improves the utilization efficiency of a transport vehicle.

(Means for solving the problem) In order to achieve such a purpose, the present invention
A hook receiving member provided at the upper center of the plow bracket attached to the back of the plow, a plate-shaped arm with one end rotatably supported on the base of the carrier, and the other end of this arm rotatably attached. a hook member having an engaging surface formed in an L-shaped cross section to engage with the hook receiving member, an elastic member provided between the hook member and the base, and one end of which is connected to the carrier vehicle; The other end is pivotally supported on the base of the arm by the hook member, and when the arm contracts, the hook member is rotated in the plow direction about the hook member side of the arm, and the engaging surface is brought into a disengaged state. a cylinder that rotates the hook member in the plow direction about the base side of the arm and allows the hook receiving member to be received on the engagement surface; a stopper that rotates the hook member in the opposite direction of the plow around its axis and restricts the engagement surface in a raised state, and further extends the cylinder to plow the arm with the base side of the arm as the axis. When rotating in the opposite direction, the plow retracting device rotates the hook member in the opposite direction of the plow about the arm side using the elastic member, returns the engaging surface to the engaged state, and retracts the hook receiving member. and; plow lashing pins provided on the left and right top and bottom of the plow bracket, and openings that are provided at symmetrical positions to the plow lashing pins on the left and right top and bottom of the frame of the transport vehicle and open toward the plow lashing pins. 27, and a rotating member rotatably housed within the outer frame and having an opening groove that opens when aligned with the opening and receives the lashing pin, and a manual plow lashing mechanism that rotates the rotating member to secure the lashing pin after confirming that the lashing pin is accommodated in the opening and the opening groove; do.

(Function) In the present invention configured as described above, the plow retracting device engages the L-shaped engaging surface with the hook receiving member provided at the upper center of the plow bracket attached to the back side of the plow. One end of the arm is rotatably supported on the hook member, and one end of the cylinder is rotatably supported, and when the cylinder contracts, the hook member is rotated in the plow direction, and the engaging surface is disengaged. At the same time, the hook member is rotated in the direction of the plow to receive the hook receiving member in the engagement surface, and the extension of the cylinder rotates the hook member in the opposite direction of the plow to engage the hook member. After the rotation of the surface is restricted by a stopper in the raised state, and the cylinder is further extended to return the engagement surface to the engaged state using an elastic member, the manual plow securing mechanism secures the plow. By confirming that the tying pin is accommodated in the opening of the outer frame and the opening groove of the rotating member and then rotating the rotating member, the relative position between the plow bracket and the transport vehicle can be easily adjusted. Moreover, the structure is simple, the handling operation is reliable, the plow can be frequently attached and detached, and the utilization efficiency of the transport vehicle can be improved.

(Example) Next, an example of the present invention will be described in detail based on the drawings.

Figure 1 is a schematic diagram of an embodiment of the present invention;
The figure shows a plan view of FIG. 1, and FIG. 3 shows a side view of FIG. 1. In FIGS. 1 to 3, the plow attaching/detaching device 1 is comprised of a plow retracting device 1A, a manual plow securing mechanism 22, and the like. The plow retracting device 1A mainly includes a hook receiving member 2,
It consists of a hook member 3, an arm 4, a cylinder 5, an elastic member 6, and a stopper 7. Of these, the plow receiving member 2 is provided at the upper center of a plow bracket 9 attached to the back side of the plow 8 (FIG. 8), and is horizontally suspended between two support plates 10. It consists of a hook receiving shaft 11. Also,
The hook member 3 includes a receiving shaft engaging surface (engaging surface) 12 formed to have an L-shaped cross section so as to receive the plow receiving shaft 11, and a substantially triangular shaped receiving shaft engaging surface 12 that supports this engaging surface 12. It consists of two support plates 13.

The arm 4 has one end supported by a base side shaft support 16 rotatably on a bracket 15 fixed to the center of the base 14 of the carrier, and the other end supported by a support plate 13.
It consists of two flat plates, which are the hook-side pivot support 17 rotatably supported approximately at the center of the hook. Further, the cylinder 5 has one end supported by a base side shaft support 19 rotatably on a bracket 18 fixed to the frontmost part of the base 14, and the other end supported by a support plate 13 of the hook member 3.
A hook-side shaft support 2 rotatably supported at one end.
It is 0.

The elastic member, in this embodiment the spring 6, has one end supported between the pivot supports 16 and 19 on the base 14, and the other end supported against the pivot support 17 of the hook member 3.
It is supported on the side opposite to the shaft support 20, and always applies a tensile force to the hook member 3 in the direction opposite to the plow. Also,
23 is a guide member fixed to the plow bracket 9.

The manual plow lashing mechanism 22 includes a plow lashing pin 21 and an outer frame 25 as shown in FIG.
and a rotating member 26 and a manual lever 29 fixed to the rotating member 26. The plow lashing pins 21 are installed at four locations on the left, right, top, and bottom of the plow bracket 9. In order to secure the pins 21, the outer frame 25 is installed on the right and left, top and bottom of the chassis frame 24 of the transport vehicle at positions symmetrical to the plow securing pins 21. The rotating member 26 is rotatably housed within the outer frame 25. The outer frame 25 has an opening 27 facing the plow lashing pin 21, and the rotating member 26 has the pin 2 by aligning with the opening 27.
1 is opened. 29A shows a state in which the manual lever is rotated downward.

The functions of the present invention will be explained using the above configuration. As shown in FIG. 1, when installing the plow 8, move the carrier to the required position of the plow 8,
The distance A with the bracket 9 shown in Figures A and B is approximately 300.
Approach to within 1/2 inch (mm) and stop. Also, adjust the left and right distances B1 and B2 from the center of arm 4 to approximately 50 mm. By contracting the cylinder 5, the hook member 3 rotates forward (in the plow direction) about the shaft support 17 against the tensile force of the spring 6, disengaging the engagement surface 12 of the hook member 3. Fold it into a horizontal L-shape. At the same time, the arm 4 rotates in the plow direction about the shaft support 16, and the hook receiving shaft 11 of the hook receiving member 2 is received in the engagement surface 12.

Next, as shown in FIG. 4, by extending the cylinder 5, together with the tensile force of the spring 6,
The hook member 3 rotates rearward (in the direction opposite to the plow) about the shaft support 17, and the stopper 7 provided on the arm 4 rotates with the engaging surface 12 pulled up.
Its rotation is regulated by.

Next, as shown in FIG. 5, by further extending the cylinder 5, the hook member 3 remains restricted by the stopper 7 and rotates further backward, and the tensile force of the spring 6 is applied to the engagement surface. 12
to return to a nearly vertical engagement state (vertical L-shape),
To surely draw in and accommodate a hook receiving shaft 11. Therefore, this plow retracting device 1A is capable of sufficiently retracting the plow 8 and plow bracket 9 to the installation position of the transport vehicle, and eliminates the complexity of positioning work that requires frequent repeated movements when installing a conventional plow. is resolved.

In addition, as shown in FIG.
The plow 8 attached to the transport vehicle by A is such that the plow lashing pin 21 provided on the plow bracket 9 of the manual plow securing mechanism 22 is connected to the opening 27 of the outer frame 25 provided on the transport vehicle and the rotation. After confirming that the moving member 26 has been inserted into the opening groove 28, the eighth
As shown in Figure C, the manual lever 29 shall be rotated downward to securely lock it.

Furthermore, the plow 8 attached by the plow attaching/detaching device 1 is connected to the high-pressure side and low-pressure side hydraulic hoses 33 of the plow lifting cylinder 31, as shown in FIG.
34 to the transport vehicle. For this purpose, a cylinder mounting frame 30 is fixed to the lower part of the plow bracket 9, the lower end of a cylinder 31 for raising and lowering the plow is pivotally supported, and the upper end is pivotally supported by a movable arm 32.
By expanding and contracting the plow lifting cylinder 31, the plow 8 can be moved up and down via the movable arm 32. For this purpose, the coupler portions 35 of the high-pressure side and low-pressure side hydraulic hoses 33, 34 and the coupler body 36 of the coupler bracket 37 on the transport vehicle side are coupled.

When the coupler part 35 and the coupler body 36 are to be attached and detached, a storage stand 38 having a predetermined height is interposed below the cylinder mounting rack 30, making it easy to attach and detach the coupler part 35 and the coupler body 36. In particular, if the bracket 9 is lowered without using the storage platform 38 during detachment, the hose 33 of the plow lifting cylinder 31
This is because there is a risk that the internal pressure will increase.

Next, in order to remove the plow 8 from the carrier, the lock lever 25 of the plow securing mechanism 22 is rotated upward to release the locked state, as shown in FIG. 9A. Next, as shown in FIG. 9B, the hook member 3 is pushed out in the plow direction, and after returning to the state before engagement with the hook receiving shaft 11 (FIG. 1) as shown, the transport vehicle is moved back little by little. Then, completely separate it from the plow bracket 9. In addition, as shown in FIG. 9C, the plow member 3 is accommodated in the transport vehicle, safety is confirmed, and the plow removal work is completed.

(Effect of the invention) As explained above, according to the plow attaching/detaching device of the present invention, the plow retracting device is formed in an L shape on the hook receiving member provided at the upper center of the plow bracket attached to the back side of the plow. One end of the arm is rotatably supported on a hook member that engages the engaged engagement surface, and one end of a cylinder is rotatably supported, and the hook member is rotated in the plow direction by contraction of the cylinder. Then, the engaging surface is turned to a non-engaging state, the hook member is rotated in the direction of the plow, the hook receiving member is received in the engaging surface, and the hook member is moved opposite to the plow by the extension of the cylinder. direction, the rotation is restricted by a stopper with the engaging surface raised, the cylinder is further extended, the engaging surface is returned to the engaged state by an elastic member, and then the manual The problem of the prior art is solved by the type plow lashing mechanism rotating the rotating member after confirming that the plow lashing pin is located in the opening of the outer frame and the opening groove of the rotating member. This problem has been effectively resolved, and the relative position between the plow bracket and the transport vehicle can be easily adjusted. Moreover, its configuration is simple, handling is reliable, and the plow can be frequently attached and detached, making the use of the transport vehicle more efficient. This has the effect of improving

[Brief explanation of the drawing]

Figure 1 is a schematic configuration diagram of one embodiment of the present invention;
The figure is a plan view of figure 1, figure 3 is a side view of figure 1,
Figure 4 is a state diagram of the hook member being retracted, Figure 5
The figure shows a fully retracted state of the hook member, Figure 6 shows a schematic configuration diagram of the manual plow securing mechanism, and Figure A
Figure B shows its front view, Figure B shows its side view, Figure 7 shows a schematic diagram of the cylinder for lifting and lowering the plow, Figure 8 shows how to install the plow according to the present invention, and Figure A shows the vehicle approaching the plow bracket. Figure B shows the plow bracket installed, Figure C shows the plow securing mechanism, Figure 9 shows how to remove the plow according to the present invention, and Figure A shows the plow securing mechanism releasing the plow.
Figure B shows a detached state of the plow bracket, Figure C shows a state in which the hook member is accommodated, Figure 10 shows a schematic diagram of a conventional plow attaching/detaching device, Figure A is a front view thereof, and Figure B is a plan view thereof. DESCRIPTION OF SYMBOLS 1... Plow attaching/detaching device, 1A... Plow retracting device, 2... Hook receiving member, 3... Hook member, 4... Arm, 5... Cylinder, 6... Spring, 7... Stopper, 8... Plow, 9...
Plow bracket, 11...Hook receiving shaft, 12
...Receiving shaft engagement surface, 17, 18, 19, 20...
Axial support, 21...plow lashing pin, 22...manual plow lashing mechanism.

Claims (1)

[Claims for Utility Model Registration] A hook receiving member 2 provided at the upper center of a plow bracket 9 attached to the back side of the plow 8;
A hook having a plate-shaped arm 4 whose one end is pivotally supported by a base 14 of a carrier, and an engagement surface 12 which is pivotally supported by the other end of this arm and has an L-shaped cross section and engages with the hook receiving member. A member 3, an elastic member 6 provided between the hook member and the base, one end of which is pivotally supported by the base of the transport vehicle and the other end of which is pivotally supported by the hook member, and when contracted, the elastic member 6 pivots the hook member side of the arm. At the same time, the hook member is rotated in the direction of the plow to bring the engagement surface into a non-engaged state, and the hook member is rotated in the direction of the plow, centering on the base side of the arm, so that the engagement surface is brought into contact with the engagement surface. A cylinder 5 for receiving a hook receiving member, and a cylinder 5 provided on the arm, and by extension of the cylinder, the hook member is rotated in a direction opposite to the plow about the hook member side of the arm as an axis, and the engaging surface is pulled up. When the cylinder is further extended and the arm is rotated in the direction opposite to the plow with the base side of the arm as the axis, the elastic member causes the arm to rotate in the direction opposite to the plow with the arm side as the axis. a plow retracting device 1A that rotates the hook member in the direction to return the engaging surface to the engaged state and retracts the hook receiving member; plow lashing pins 21 provided on the left, right, upper and lower sides of the plow bracket; , an outer frame 25 having openings 27 provided at symmetrical positions with the plow lashing pin on the left and right upper and lower sides of the frame of the transport vehicle and opening toward the plow lashing pin; and a rotating member 26 having an opening groove 28 that is housed in the opening and opens upon alignment with the opening to receive the lashing pin, and the plow lashing pin is accommodated in the opening and the opening groove. A plow attachment/detachment device comprising: a manual plow lashing mechanism 22 which confirms that the turning member rotates and locks the lashing pin;