KR101279820B1 - Snowplow having blade for horizontal position automatic reinstation - Google Patents

Abstract

PURPOSE: A snowplow with a blade which is automatically restored to a horizontal position is provided to improve durability by reducing corrosion and to enhance restoring operation reliability by preventing a compression spring from being contacted with foreign substances, rain, snow, and snow removing materials. CONSTITUTION: A snowplow with a blade which is automatically restored to a horizontal position comprises a blade supporting frame(10), a pivot axis, a blade(16), a clay cylinder(18), and a blade horizontal position restoring unit(20). The blade horizontal position restoring unit comprises a spring housing, a compression spring, a push bolt, and a balance bracket(28). The blade horizontal position restoring unit is fixed to a pivot bracket(12) and restores the blade which is inclined while lifting the blade to be horizontal. The compression spring shows a compressive repulsive force in the longitudinal direction of the blade supporting frame.

Description

Snow plow having blade for horizontal position automatic reinstation

The present invention relates to a snow plow for performing snow removal with a blade, in particular, in a horizontal posture in which the blade can be tilted in response to the road surface, and the blade can be removed and the blade can be automatically returned immediately to a horizontal posture when the blade is raised. A snow plow with a blade that automatically returns.

In general, a snow removal vehicle (for example, a tractor) provided with a blade is used for snow removing the road. The snow removing vehicle can adjust the direction of the blade. Therefore, the snow removal vehicle removes snow from the road quickly while simultaneously performing snow removal and topdressing using a blade.

In this process of snow removal, the blade is controlled by the operator appropriately to the condition of the road surface. However, there is a situation where it is difficult to control the direction and attitude of the blade by the operator. For example, it is difficult to change the direction and attitude of the blade in the case where the road surface is inclined in one of the width directions or suddenly dents.

As a background technology of the present invention is a Korean Patent Registration No. 10-0987642, Fixed plate which is fixed to the front of the vehicle; A swing plate which is rotatably coupled to the fixed plate from side to side; A snow removal plate connected to the swing plate; A rotating plate coupled to a lower end of the snow removing plate and supported to rotate back and forth with respect to the snow removing plate by a supporting member; And a snow blade that is coupled to the bottom of the rotating plate to snow snow, wherein the support member includes a bolt penetrating the bottom of the snow removing plate and the rotating plate from the front of the snow removing plate; A nut screwed to an end of the bolt at the rear of the snow removing plate; And an elastic member fitted to the outside of the bolt at the rear of the snow removing plate. Therefore, the swing plate has a long hole in the fixed plate to rotate within a certain angle so that the snow removal plate is inclined to the inclined road situation.

However, the background art does not have a device that maintains its horizontal position even after the snow plow is tilted, and thus there is a problem in that stability is reduced due to shaking when the snow plow is driven.

Another technology that is the background of the present invention is a tractor snow removing machine of Korean Laid-Open Patent Publication No. 10-2010-0135040, which is provided with a snow removing plate installed on the bottom of the blade member that can be attached to the tractor to remove snow on the road. In the tractor snow removing machine, the support shaft is provided with a frame detachable to the tractor, one end is installed in the frame and the other end is installed perpendicular to the connection portion with the snow removing plate so as to rotate on the snow removing plate. ; And an angle adjusting tilting means installed at a connection portion of the support shaft and the snow removing plate to rotate the snow removing plate to form an inclined angle according to the inclination of the road, and the tilting means for adjusting the angle is installed to surround the supporting shaft. It is installed on the snow removing plate to be positioned outside the fixed tube and the fixed tube, both sides are penetrated through the support tube body formed with an angle adjustment long hole and the angle control hole of the support tube and one end is installed in the fixed tube One end is provided to the fastening bolt installed to protrude to the outside of the support pipe body and the projecting portion of the fastening bolt to adjust the tension of the first spring and the first spring to impart an elastic force to the tilting means for adjusting the angle. Fixing the first and second support rings and the first and second support rings installed at both ends of the first spring It can allow characterized by consisting of nuts which are mounted to the fastening bolt.

Therefore, the snow removal plate is returned to its original position by the elastic reaction force of the pair of first springs exposed to the snow removal plate. However, in the background art, the number of installations of the first spring is increased, and the first spring is installed to be exposed to the outside of the snow removing plate, so that it is not only snow and rain, but also contact with the snow removing agent (calcium chloride) during snowing, causing corrosion. There is a problem that durability is lowered.

Another background of the present invention is a tractor snow removing machine of Korean Patent Registration No. 10-0755780, the support bracket is integrally attached to both sides of the snow removing plate, the lower portion of the snow removing plate, the fixing pin in the coupling hole formed in the support bracket A snow board that is in close contact with the side of the snow removal plate in a state of being coupled through; A snow blade that is detachably installed at a lower end of the snow removal plate and is connected to a rotation bracket attached to the rear surface of the snow removal plate and the snow removal plate to operate independently when an obstacle collides; The tilting frame groove of the tilting support, which is freely coupled to the tilting frame and the fixed frame attached to the snow removing plate, is penetrated by a guide pin, and consists of a snow removing plate tilting device which presses the tilting frame and the tilting support at the same time.

However, the background art has a structure in which the pressure springs are installed at two places on the rear surface of the snow removing plate, and the number of assembly parts is increased, and the pressure springs are exposed to the outside, thereby having the problems of the background art described above.

Korean Laid-Open Patent Publication No. 10-2012-0106381

The present invention provides a snow plow having a blade that can be rotated in response to an inclined road surface, and the blade is automatically returned to a horizontal position so that the tilt can be removed or the blade can be automatically returned to the horizontal posture automatically when the blade is raised. The purpose is.

In addition, another object of the present invention is to reduce the number of installation of the compression spring included in the horizontal return unit for returning the blade horizontally so as not to be exposed to the outside to excellent operating durability.

A snow plow having blades automatically returned to a horizontal position according to a preferred embodiment of the present invention,

A blade support frame having a frame pivot bracket detachably connected to the boom device of the vehicle and protruding forward in the front;

A pivot shaft whose one end is rotatably installed on the frame pivot bracket with the Z axis toward the front direction of the blade support frame as the center of rotation;

A blade coupled to the other end of the pivot axis and rotatably installed in the Y axis direction perpendicular to the Z axis as the rotation center;

One end is hinged to the blade support frame side and the other end is hinged to the blade side is a top-down cylinder for adjusting the top down direction during snow removal of the blade; And

It is characterized in that it has a blade horizontal return unit fixed to the frame pivot bracket and in contact with the pivot axis to return the blade inclined in response to the inclination of the road surface when the blade is lifted to a horizontal position.

In addition, the blade horizontal return unit,

A spring housing fixed to the frame pivot bracket side;

A compression spring installed inside the spring housing and exerting a compression repulsion force in the X-axis direction, the longitudinal direction of the blade support frame;

A pair of push bolts each projecting outwardly from each end of the spring housing by the repulsive force of the compression spring;

The pivot shaft is provided with a balance bracket having a support jaw in contact with the bolt head of the pair of push bolts.

In addition, the spring housing,

A pair of housing flanges in close contact with both sides of the fixed flange placed on the upper surface of the frame pivot bracket and bolted together;

A pair of cylindrical cylinders disposed coaxially with one end joined to the housing flange to receive the compression spring therein;

It is characterized in that consisting of; push-bolt detachment flanges that are bonded to both ends of a pair of cylindrical cylinders.

In addition, the locking nut is screwed to the push bolt to adjust the amount of protrusion of the push bolt;

In order to prevent the push bolt is separated from the spring housing is characterized in that it further comprises a stop nut screwed to the push bolt.

In addition, as a means for securing the blade at the same time limiting the rotation angle of the pivot shaft, a pair of locking bolts screwed to the lower side of the frame pivot bracket facing each other on the same straight line; A lock nut screwed to the lock bolt to fix the lock bolt after adjustment;

The balance bracket is further characterized by further comprising a locking step bent in the frame pivot bracket inside the locking bolt is located on the rotation axis of the lock bolt.

The snowplow having the blade which automatically returns to the horizontal position according to the present invention, even if the blade is tilted in the road width direction, the balance bracket immediately receives the return force of the compression spring when the blade is raised, thereby returning the pivot shaft to its original position, thereby immediately turning the blade to the horizontal position. By returning, it is easy to cope with the change of the tilt direction of the blade.

In addition, the blade returned to the horizontal position is always supported by a compression spring, so that there is no shaking during driving or moving, it is possible to stable operation of the snowplow.

In addition, the compression spring is installed inside the spring housing to prevent contact between foreign matter, rain, snow, and snow removal agent, thereby increasing the reliability of the return operation and reducing the risk of corrosion, thereby improving durability.

The following drawings, which are attached in this specification, illustrate the preferred embodiments of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention. It should not be construed as limited.
1 is a perspective view of a snow plow with blades automatically returned to a horizontal position according to the present invention.
2A is a back side perspective view of FIG. 1;
FIG. 2B shows FIG. 2A from a different angle;
3 is a side view of FIG. 1;
4 is a sectional view taken along the line AA in Fig.
5 is an enlarged view of a portion B of FIG. 4 in a state in which the blade maintains a horizontal posture.
Figure 6 is an exploded perspective view of the blade horizontal return unit applied to the present invention.
Figure 7 is a side view of the pivot shaft portion connecting the support frame and the blade according to the invention.
8 is a perspective view of a pivot axis applied to the present invention.
FIG. 9 is a sectional view seen from the direction AA of FIG. 3 when the blade is inclined to either side; FIG.
FIG. 10 is an enlarged view of a portion 'C' of FIG. 9;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

The snow removing machine according to the present invention is automatically inclined by the horizontal return unit 20 when the blade 16 is inclined in response to the widthwise inclination of the road surface as shown in FIGS. 4 and 9, and then the blade 16 is moved upward. It is supposed to return to posture immediately.

First, the snow plow is provided with a blade support frame 10 as shown in FIGS. The blade support frame 10 may be detachably connected to a boom (not shown) of a snow removal vehicle (for example, a tractor). Therefore, the blade support frame 10 has a pin bracket 11 to be connected to the boom on the rear. The blade support frame 10 has a rectangular frame shape having a predetermined length, height, and width. The blade support frame 10 is not limited to the shape or structure shown.

In the present specification, the longitudinal direction or the parallel direction of the support frame 10 is referred to as the 'X axis' direction, and the height direction or the parallel direction thereof is referred to as the 'Y axis' direction, and the width direction or the parallel direction thereof to the 'Z' direction. Axis' direction.

The blade support frame 10 has a frame pivot bracket 12 protruding forward (Z-axis direction) in the center of the front surface. As shown in FIG. 7, the frame pivot bracket 12 is rotatably in contact with the cylindrical portion 125 for supporting the pivot shaft 14 and the rear surface of the cylindrical portion 125 such that the bolt 127 and the nut 144 are rotated. The rotating plate 126 supported by the horizontal shaft 141 of the pivot shaft 14 by fastening is provided.

The pivot shaft 14 is attached to the frame pivot bracket 12. One end of the pivot shaft 14 is connected to the inner circumferential surface of the cylindrical portion 125 of the frame pivot bracket 12 so as to be rotatable. Therefore, the pivot shaft 14 is rotatably installed at the center of rotation of the Z axis toward the front direction of the blade support frame 10. In addition, the pivot shaft 14 has a vertical shaft 142 connected in a vertical direction to the blade pivot bracket 163. At this time, the vertical axis 142 is rotatably coupled to the upper and lower bosses 164a and 164b of the blade pivot bracket 163.

The blade 16 is connected to the other end of the pivot shaft 14 is installed. The blade 16 is rotatably installed at the other end of the pivot shaft 14 with the Y-axis direction as the rotation center, and is rotated and adjusted with the Z-axis direction as the rotation center, so that the blade 16 is inclined to either side corresponding to the road surface. You can change your posture.

The blade 16 is capable of adjusting the discharging direction by the discharging cylinders 18 and 18. Bato cylinders 18 and 18 have one end hinged to the frame pivot bracket 12 of the blade support frame 10 and the other end is hinged to the hollow shaft 162 installed on the back side of the blade 16.

In the frame pivot bracket 12, the blade horizontal return unit 20 is fixed to the upper surface. The blade horizontal return unit 20 is in contact with the pivot shaft 14 to immediately return the inclined blade 16 to the horizontal position upon lifting of the blade 16.

5 and 6, the horizontal blade return unit 20 is a spring housing 22 fixed to the frame pivot bracket 12, and the compression is installed inside the spring housing 22 is arranged in the X-axis direction Compression spring 24 and a pair of push bolts (26a, 26b) protruding a predetermined amount from each end of the spring housing 22 by the repulsive force of the compression spring 24, respectively. At this time, the pivot shaft 14 is provided with a balance bracket 28 having support jaws 281 and 282 in contact with the bolt heads of the pair of push bolts 26a and 26b as shown in FIGS. 5 and 8.

Here, the spring housing 22 is disposed coaxially with a pair of housing flanges 221 and 221 which are in close contact with both sides of the fixing flange 121 installed on the upper surface of the frame pivot bracket 12 and are joined by bolts. A pair of cylindrical cylinders 222 and 222 joined to the housing flanges 221 and 221, respectively, to receive the compression spring 24, and a push bolt release preventing flanges 223 and 223 joined to both ends of the pair of cylindrical cylinders 222 and 222. It is composed.

Meanwhile, the compression spring 24 is operated inside the spring housing 22 and at the same time, the contact distance between the head of the push bolts 26a and 26b and the support jaws 281 and 282 of the balance bracket 28 is adjusted. A lock nut 25 and a stop nut 27 are provided for locking.

The lock nut 25 and the stop nut 27 are screwed to the push bolts 26a and 26b. At this time, the stop nut 27 is positioned in the spring housing 22 to transmit the compression reaction force of the compression spring 24 to the push bolts 26a and 26b, and at the same time to the push bolt release prevention flange 223 to stop the push bolt 26a. , 26b) to prevent separation. The lock nut 25 is screwed to the stop nut 27 to lock the positions of the push bolts 26a and 26b in which the protrusion amount is determined. Herein, the protrusion amount of the push bolts 26a and 26b means a contact distance between the bolt head and the support jaws 281 and 282 of the balance bracket 28.

The operation of the snow plow with blades automatically returned to the horizontal position according to the present invention configured as described above will be described.

First, when the blade 16 is not inclined in either direction as shown in FIG. 4 (when there is no inclination in the width direction of the road surface), the push bolts 26a and 26b of the plate horizontal return unit 20 as shown in FIG. The head of each bolt is in contact with the support jaws 281 and 282 of the balance bracket 28.

In this state, according to the operation direction of the discharging cylinder 18, the discharging direction is determined, and the discharging is performed to the roadside during snow removal.

On the other hand, when the snow road is inclined to either side, the blade 16 is inclined to rotate in the inclined direction.

For example, when the blade 16 is inclined to rotate in the clockwise direction L as shown in FIG. 9, the balance bracket 28 pushes one push bolt 26a toward the support jaw 281 as shown in FIG. Compress (24). At this time, the pivot shaft 14 interlocked with the blade 16 rotates the balance bracket 28 in the same clockwise direction about the Z axis.

As the blade 16 rotates according to the inclination of the road as described above, both ends of the topdressing cylinder 18 are spherically coupled to each other, and the posture is actively changed in conjunction with the rotation of the blades 16 to continuously remove the snow removing work.

Thereafter, even if the blade 16 is inclined in any direction, when the blade support frame 10 is raised through the boom, the blades 16 are interlocked with each other via the pivot shaft 14 to be lifted from the road surface. When the blade 16 is raised, the rotational force that tilts the blade 16 is removed, which causes the compression spring 24 to push the push bolt 26a with the compression repulsion force, and the push bolt 26a is the balance bracket 28. In the end, the blade 16 is rotated and returned to its original position along with the pivot shaft 14 to maintain the horizontal position.

On the contrary, when the blade 16 rotates in the counterclockwise direction, the balance bracket 28 pushes the other push bolt 26a to the support jaw 282 to compress the compression spring 24 and then rotate the blade 16. Ascending, the blade 16 is returned to its original position by the same action as described above to maintain the horizontal.

As described above, according to the present invention, even when the blade 16 is inclined in any direction along the road, the balance bracket 28 receives the return force of the compression spring 24 when the blade 16 is raised to return the pivot shaft 14 to its original position. 16) immediately returns to the horizontal position.

Therefore, when the blade 16 is raised in a state where the blade 16 is inclined toward the roadside as in the related art, the blade 16 does not remain in an inclined state, but as the present invention, the blade 16 returns and maintains a horizontal posture. It is easy to cope with the change of the tilt direction.

In addition, the blade 16 returned to the horizontal position is always supported by the compression spring 24, so that there is no shaking during driving or moving, so that the snow removing machine can be stably operated.

Meanwhile, the present invention is a means for fixing the blade 16 while limiting the rotational angle of the pivot shaft 14, as shown in the enlarged view of FIG. 2 and the lower side of the frame pivot bracket 12 as shown in FIG. A pair of locking bolts 40 and 40 which are screwed to face each other on the same straight line, and a lock nut which is screwed to the locking bolts 40 and 40 to fix and fix the locking bolts 40 and 40. (41, 41) may be further provided. In addition, the balance bracket 28 has a locking step 283 which is bent toward the frame pivot bracket 12 at the lower end and positioned on the rotation shafts of the locking bolts 40 and 40.

Therefore, when the locking jaw 283 is fixed by tightening the locking bolts 40 and 40, the pivot shaft 14 is no longer rotated on the Z axis, and thus the blade 16 is fixed. Therefore, if the lock bolts 40 and 40 are tightened while the blade 16 maintains the horizontal posture, the blade 16 may maintain a stable posture in which no tilting rotation is made.

In addition, the distance between the locking jaw 283 and the locking bolts 40 and 40 is changed according to the locking amount of the locking bolts 40 and 40, so that the left and right rotational amounts of the pivot shaft 14 are limited to the maximum rotation of the blade 16. You can also limit the angle.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be. The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

10: blade support frame
14: pivot axis
16: blade
18: Bait cylinder
20: horizontal return unit
22: spring housing
24: compression spring
25,41: lock nut
26a, 26b: push bolt
27: Stop nut
28: balance bracket
221: housing flange
222: cylinder cylinder
223: flange for preventing push bolt removal
40: lock bolt

Claims (5)

delete delete A blade support frame 10 having a frame pivot bracket 12 that is detachably connected to the boom device of the vehicle and protrudes forward on the front surface thereof; A pivot shaft (14) having one end rotatably installed on the frame pivot bracket (12) with the Z axis toward the front direction of the blade support frame (10) as the center of rotation; A blade 16 coupled to the other end of the pivot shaft 14 and rotatably installed in a Y-axis direction perpendicular to the Z-axis as a rotation center; One end is hinged to the blade support frame 10 side and the other end is hinged to the blade 16 side to control the discharging direction during the snow removal of the blade 16 (18, 18); And a blade horizontal return unit fixedly installed at the frame pivot bracket 12 and in contact with the pivot shaft 14 to return the blade 16 inclined in response to the inclination of the road surface when the blade 16 is lifted to a horizontal position. 20, wherein the blade horizontal return unit 20, the spring housing 22 is fixed to the frame pivot bracket (12); A compression spring 24 installed inside the spring housing 22 to exert a compression repulsion force in the X-axis direction, which is the longitudinal direction of the blade support frame 10; A pair of push bolts 26a and 26b projecting outwardly from each end of the spring housing 22 by the repulsive force of the compression spring 24; Pivot shaft 12 is provided with a balance bracket 28 having support jaws 281 and 282 in contact with the bolt heads of a pair of push bolts 26a and 26b and having a blade which automatically returns to a horizontal position.
The spring housing 22 includes a pair of housing flanges 221 and 221 in close contact with both surfaces of the fixing flange 121 installed on the upper surface of the frame pivot bracket 12 and joined by bolts; A pair of cylindrical cylinders 222 and 222 disposed coaxially and having one end joined to the housing flanges 221 and 221, respectively, to receive the compression spring 24 therein; A snow plow having blades automatically returned to a horizontal posture, comprising: push-bolt escape preventing flanges (223, 223) joined to both ends of a pair of cylinder cylinders (222, 222). The method of claim 3,
A lock nut 25 screwed to the push bolts 26a and 26b to adjust the amount of protrusion of the push bolts 26a and 26b; In order to prevent the detachment of the push bolts (26a, 26b) in a horizontal position characterized in that it further comprises a stop nut (27) located in the spring housing (22) screwed to the push bolts (26a, 26b) Snow plow with blades returned. The method of claim 3,
As a means for securing the blade 16 while limiting the rotational angle of the pivot shaft 14, a pair of locking bolts screwed to the lower side of the frame pivot bracket 12 to face each other on the same straight line. (40, 40); Locking nuts (41, 41) screwed to the locking bolts (40, 40) to fix the locking bolts (40, 40) after adjustment; The balance bracket 28 further includes a locking jaw 283 at the bottom which is bent into the frame pivot bracket 12 and positioned on the rotation shaft of the locking bolts 40 and 40. Snow plow with blades returned.

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