JPH033620Y2 - - Google Patents

Description

[Detailed Description of the Invention] A. Purpose of the Invention A. Field of Industrial Application This invention relates to a locking device for a snow removal device lifting mechanism in a rotary snow removal vehicle.

B. Conventional technology and its problems Not only rotary snowplows but also construction vehicles,
In order to maintain the minimum ground clearance while traveling, it is mandatory to install a mechanical position holding device to prevent natural descent due to leakage of the hydraulic cylinder 12, etc.

As shown in FIGS. 4 and 5, a rotary snowplow also generally runs with the lifting link 13 and bracket 14 held by fixing pins 15 when in the running position.

However, in extremely cold regions during winter, it is not easy to go outside the driver's cab and operate the fixing pin 15 each time.

Especially when working with one person on board, fixing pin 15
In many cases, it takes a considerable amount of time just to insert the lift link 13 and bracket 14 into the lift link 13 and bracket 14.

In the figure, 3 is a snow removal device, 4 is a body of a rotary snowplow, 16 is a mounting pin on the body side of a rotary snowplow, 1
7 is a mounting pin on the snow removal device side.

B. Structure of the invention A. Means for solving the problem In order to achieve the above purpose, the invention is as follows.

The back part of the snow removal device 3 and the body 4 of the rotary snow removal vehicle
Lifting link 2 that can be raised and lowered between the front parts of the
is installed using the snow removal device side mounting pin 3A provided on the back of the snow removal device 3 and the vehicle body side mounting pin 4A provided between the front portion of the vehicle body 4 of the rotary snow removal vehicle. A hydraulic cylinder 5 for raising and lowering the lifting link 2 is disposed on the front of the vehicle body 4 of the snowplow, and has a direction perpendicular to the direction of movement of the rotary snowplow in the middle of the lifting link 2. A hook 7 to which a holding pin 6 is fixed and which is movably connected by a pin 8A of a bracket 8 provided on the front surface of the vehicle body 4 of the rotary snowplow is engaged with the hook holding pin 6 in a state perpendicular to the bottom surface thereof. The pin 8A is configured to be released from the hook, and the load ω applied to the hook holding pin 6 is
By providing the hook 7 on the extension line of the component force ω _F in the direction of the hook 7, and by making the length r touching the hook holding pin 6 from the pin 8A into the shape of the hook 7, an acting force is generated on the hook 7 which can be raised and lowered to prevent the pin from coming off. A link 12 is fixed to the hook 7 in the forward direction from the pin 8A, and one side of the push-pull cable 11 is connected to the link 12.
The other end of the push-pull cable 11 is connected to a link 10 in the driver's cab, and the indoor operating lever 9 fixed to the link 10 is configured to be tiltable around a pin 13, so that the operating lever 9 can be moved in the driver's cab. This is a locking device for a snow removal device elevating mechanism, which is configured so that a hook 7 can be freely engaged and detached from a hook holding pin 6 by operation.

(b) Examples of implementation of the idea Examples will be described with reference to the drawings.

1 is a locking device for the lifting mechanism of the snow removal device of the present invention.

Reference numeral 2 denotes an elevating link disposed between the back of the snow removal device 3 and the front of the vehicle body 4 of the rotary snow removal vehicle so as to be able to move up and down. It is attached using vehicle body side mounting pins 4A provided between the front parts of the vehicle body 4 of the snowplow.

In addition, a hydraulic cylinder 5 for raising and lowering the elevating link 2 is disposed on the front surface of the vehicle body 4 of the rotary snowplow.

Reference numeral 6 denotes a hook holding pin which is located in the middle of the elevating link 2 and has a direction perpendicular to the traveling direction of the rotary snowplow and is fixed in a horizontal state.

Reference numeral 7 denotes a hook connected to a pin 8A of a bracket 8 provided on the front part of the vehicle body 4 of the rotary snowplow, and this hook 7 is connected to a hook holding pin 6.
It is configured to engage and disengage in a state perpendicular to the lower surface.

In this case, in the positional relationship shown in FIGS. 6 and 7, the load ω applied to the hook holding pin 6
However, the component force ω _R in the direction of the vehicle body side mounting pin 4A and the hook 7
It can be divided into directional force ω _F.

By providing the pin 8A on the extension line of the hook 7 direction component force ω _F and making the length r that touches the hook holding pin 6 from the pin 8A the shape of the hook 7, the hook 7 direction component force ω _F It becomes a mechanism that can hold the position.

Furthermore, if the snow removal device 3 is slightly raised by the hydraulic cylinder 5 and a gap is created between the hook holding pin 6 and the hook 7, then by moving the pin 8A to a pin 8B etc., the component force ω _F in the direction of the hook 7 can be increased. It is also possible that the force couple ω _F due to this distance acts as an acting force in a direction that makes it difficult for the hook 7 to come off the hook holding pin 6.

Note that L is the distance from the vehicle body side mounting pin 4A to the hook holding pin 6.

Further, a link 12 is fixed to the hook 7 in the forward direction from the pin 8A, and furthermore, one side of the push-pull cable 11 is connected to the link 12.

The other end of the push-pull cable 11 is connected to the link 10 inside the driver's cab.

The link 10, together with the fixed operating lever 9,
By making the hook 7 tiltable around the pin 13, the hook 7 can be freely engaged with and detached from the hook holding pin 6 by operating the operating lever 9 in the operator's cab.

The snow removing device 3 side of the lifting link 2 is raised using a hydraulic cylinder 5 or the like, and the third
As shown in the figure, by operating the operating lever 9 in the driver's cab to the lock side or release side, the link
0 is tilted around the pin 13, and the operating force is applied to the link 12 via the push-pull cable 11 connected to the link 10.

As a result, the hook 7, which is tiltable about the pin 8A, can be operated in a detachable manner with respect to the hook holding pin 6.

Note that the operation transmission system for the operation lever 9, link 10, push-pull cable 11, etc. to the hook 7 is the same even if it is a pedal, a link, etc.

In FIG. 3, in the operating lever and hooked states, the solid line represents the locked state, and the dashed line represents the released state.

C. Effects of the invention Since the present invention is configured as described above, it produces the following effects.

B. There is no longer a need to go outside each time to lock the lift link.

Locking can now be done easily and quickly with one-man operation.

[Brief explanation of the drawing]

Figure 1 is a side view of the rotary snowplow, Figure 2 is a side view of the rotary snowplow.
3 is an enlarged side view of section A in FIG. 1, FIG. 4 is a side view of a conventional locking device, and FIG. 5 is a vertical sectional view of the main parts of the same. Figures 6 and 7 are force relationship diagrams of the present invention. 1... Lock device for the snow removal device lifting mechanism, 2...
Lifting link, 3...Snow removal device, 4...Rotary snow removal vehicle body, 5...Hydraulic cylinder, 6...Hook holding pin, 7...Hook, 8...Bracket,
9...Operation lever, 10...Link, 11...Push-pull cable, 12...Link, 13...
pin.

Claims (1)

[Scope of utility model registration request] The back part of the snow removal device 3 and the body 4 of the rotary snow removal vehicle
Lifting link 2 that can be raised and lowered between the front parts of the
is installed using the snow removal device side mounting pin 3A provided on the back of the snow removal device 3 and the vehicle body side mounting pin 4A provided between the front portion of the vehicle body 4 of the rotary snow removal vehicle. A hydraulic cylinder 5 for raising and lowering the lifting link 2 is disposed on the front of the vehicle body 4 of the snowplow, and has a direction perpendicular to the direction of movement of the rotary snowplow in the middle of the lifting link 2. A hook 7 to which a holding pin 6 is fixed and which is movably connected by a pin 8A of a bracket 8 provided on the front surface of the vehicle body 4 of the rotary snowplow is engaged with the hook holding pin 6 in a state perpendicular to the bottom surface thereof. The pin 8A is configured to be released from the hook, and the load ω applied to the hook holding pin 6 is
The hook 7 is provided on the extension line of the component force ω _F in the direction of the hook 7, and the length r touching the hook holding pin 6 from the pin 8A is configured in the shape of the hook 7, and the hook 7 is provided with the pin 8
A link 12 is fixed in the forward direction from A, and one side of the push-pull cable 11 is connected to the link 12, and the other side of the push-pull cable 11 is connected to the link 10 in the driver's cab.
A locking device for a snow removal device lifting/lowering mechanism, characterized in that an indoor operating lever 9 fixed to the holder is configured to be tiltable around a pin 13.