JP2571356B2 - Folding roof snow blower - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A conventional snow removal device that puts a frame on a roof, attaches a pulley, attaches a belt or rope to which a snow removing rod is attached, and sweeps down snow falling along the roof surface, requires a screw for mounting. Work such as stopping, assembling by welding, removing is complicated, construction cost is expensive, and storage
Parts are easily scattered and there are many inconveniences.

SUMMARY OF THE INVENTION An object of the present invention is to provide a roof snow removing device which can be easily attached to and detached from a roof and which can be easily stored. Hereinafter, description will be made in accordance with embodiments.

In the figure, 1 is a concrete warehouse. 2 is the flat roof. 3 is a horizontal bar made of an aluminum square pipe. 4,5
Is a mounting plate fixed to the left and right ends. 6 is a motor with a reduction gear attached to the vertical part. Reference numeral 7 denotes a shaft connected to the output shaft of the motor, passing through the horizontal bar 3, and fitted into a bearing mounted on the mounting plate 5. Reference numerals 8 and 9 denote pulleys for a timing belt (synchro belt) having teeth on a contact surface with the belt. 10 and 11 are stoppers attached to mounting plates 4 and 5. 12 and 13 are vertical bars consisting of square pipes. 14, 15 are vertical bars 12,
A shaft (vertical bar mounting shaft) consisting of rivets mounted on mounting plates 4 and 5 through holes drilled in 13. 16 and 17 are vertical rods composed of square pipes whose rear ends are fitted into vertical rods 12 and 13. 18 and 19 are pulleys fitted on the shafts that are passed across the inner surface of the front ends of the vertical bars 16 and 17. 20 and 21 are stoppers attached to vertical bars 16 and 17. 22 and 23 are protrusions of the horizontal bar 3. 24 and 25 are projections of vertical bars 12 and 13. 26, 27, 28 and 29 are oblique bars. 30, 31, 3
2, 33, 34, and 35 are the axes that form the joint. 36, 3
7 is a projection attached to the oblique bars 26 and 28. 38 is a screw screwed into the screw hole of the oblique bar 27,26. 39 is a screw screwed into the screw hole of the oblique rod 29,28. 40, 41 are projections of vertical bars 12, 13. 42, 43
Is a movable frame set in vertical bars 16 and 17. The screws 44 and 45 are screwed into the screw holes opened in the frames 42 and 43 and press the outer surfaces of the vertical bars 16 and 17. Reference numerals 46 and 47 denote springs extending from the projections 40 and 41 and the frames 42 and 43 and having an extending force. 48 and 49 are guide plates which are attached to the vertical bars 12 and 13 and whose upper surface is bent in an arc shape. 50 is a snow rod made of square pipe. Reference numerals 51 and 52 denote snow removal sticks whose inner ends are fitted into the snow removal stick 50. Screws 53, 54, 55 and 56 are screwed into the screw holes drilled in the snow plow 50 and pushing the snow plows 51 and 52. 57 and 58 are movable frames fitted on a snowplow 50. 59 and 60 reach the pulleys 8 and 9 from the rear lower part of the movable frames 57 and 58, and the vertical bars 12, 13, 16, 17
Passing through the inside, pulleys 18 and 19, the timing belt attached to the lower front of the movable frames 57 and 58. 61 is a power control box. A code 62 connects the control box 61 and the motor 6. 63 is a switch.

FIG. 3 shows an electric circuit diagram in a control box 61 for controlling the motor 6, and 64 is an AC power supply. 65, 66, 67, 68 are motor 6
Lead wire. 69 is a relay. 70 is a relay that operates when a large current flows through the coil. 71 is a rectifier. 72 and 73 are condensers. 74 is high resistance. 75 is low resistance. Reference numeral 76 denotes a flip-flop with a built-in power supply, which is energized to the output circuit when the first input pulse is input to the output circuit, is turned off when the second input pulse is input, and is turned off again when the third input pulse is input. It is.

When snow falls and piles on the roof 2 higher than the bottom of the snow plows 50, 51, 52, the motor 6 is energized through the power supply 64, which turns on the switch 63, the contacts of the relay 69, the coil of the relay 70, etc. 6 rotates forward, the belts 59 and 60 move, and the snow plows 50, 51 and 52 begin to move forward.

Immediately after the switch 63 is turned on, a large current when the motor 6 is started flows through the coil of the relay 70, and its contacts are closed. However, the power supply voltage is stored in the capacitor 72 via the rectifier 71, and further passed through the high resistance 74. 10 to charge to 73
It takes about a second, so even if the relay 70 is closed,
No power is supplied to the input circuit of the flop 76. When the motor 6 is in normal operation, the relay 70 returns, but the flip flop 76 is not affected.

Eventually, when the snowplows 50, 51 and 52 reach the front edge of the roof 2, the snow swept by the snowplows falls on the ground, and the snowplows rotate about 90 ° along the pulleys 18 and 19 to move the movable frame. 57 and 58 hit the stoppers 20 and 21 and stop.

At that time, the snow that has reached the upper surface of the snow plow also falls. In addition, even if the belts 59 and 60 are cut, they are received by the stoppers 20 and 21 and there is no danger of the snow removing rod falling.

The springs 46, 47 push the vertical bars 16, 17 forward, and the belts 59, 60
Is tensioned. Guide plates 48 and 49 are snow removal sticks 50 and movable frames
57 and 58 are prevented from being caught when passing over the protrusions 40 and 41 and the movable frames 42 and 43.

When the snowplow 50 hits the stoppers 20 and 21 and stops,
A large current flows through the motor 6, the contact of the relay 70 closes, and flows from the already charged capacitor 73 to the input circuit of the flip-flop 76, where the flip-flop 76
Is switched, the coil energization of the relay 69 is started, the contact of the relay 69 is switched, the connection of the lead wires 67 and 68 is switched, and the motor 6 starts reverse rotation.

A large current flows due to the reverse rotation of the motor 6, and the relay 70 keeps closing. However, when the relay 70 closes, the current of the capacitor 73 also flows to the low resistance 75, and the capacitor 73 discharges in a short time, and the flip-flop Only one pulse is applied to 76.

Due to the reverse rotation of the motor 6, the snow removing rods 50, 51, 52 move backward, causing the snow accumulated on the roof 2 to fall from the rear edge of the roof 2 to the ground before hitting the stoppers 10, 11 and stopping.

A large current flows through the motor 6, the relay 70 closes, and the current stored in the capacitor 73 is flip-flop.
76, the flip flop 76 switches, the coil of the relay 69 stops, the contact of the relay 69 returns,
The motor 6 returns to normal rotation, and the snow plows 50, 51, 52 move forward.

In this way, the snow plows 50, 51, 52 reciprocate back and forth, and the roof 2
The snow on top can be removed sequentially.

Although the stoppers 10, 11, 20, and 21 prevent the entire apparatus from moving back and forth, the stoppers may be perforated, wired, and screwed to the warehouse 1.

The stoppers 10, 11 also have the function of preventing the belts 59, 60 from lifting off the pulleys 8, 9.

When the snow removal rod 50 is carrying heavy snow, it bends and the distance between the belts 59 and 60 is reduced, which may cause the belt to come off the pulley.

However, in practice, the movable frames 57 and 58 are separated from the screws 54 and 55 and approach the positions 53 and 56, and the interval between the belts 59 and 60 is restored.

When winter is over and the equipment is closed, loosen the screws 53, 54, 55, 56 and push the snow removing rods 51, 52 into the snow removing rod 50,
Move up, then loosen screws 44, 45, push vertical bars 16, 17 into vertical bars 12, 13, then loosen screws 38, 39, shaft
While pushing and bending the parts 31 and 34 backward and outward, respectively, the vertical rods 12 and 13 are folded by rotating the vertical rods 12 and 13 around the shafts 14 and 90 by 90 degrees in a direction to approach the pulleys 18 and 19. At that time, on the vertical bar 13
Stack 12 (In a practical machine, the vertical bars 12 and 13 are slender and bendable.) The projections 36 and 37 prevent the shafts 31 and 34 from bending inward in the front.

The diagonal bars 26 and 27 and 28 and 29 are each folded in two and enter between the horizontal bar 3 and the vertical bars 12 and 13.

After folding, tie it with a rope so that it does not spread again, and drop it from the roof 2 to the ground.

If you want to re-install on the roof before winter, you have to do the reverse operation.

If most were made of aluminum, the total weight would be enough to carry alone.

It is quite difficult to firmly connect the timing belts 59 and 60 to the movable frames 57 and 58, but the detailed structure of the movable frame 57 may be connected as shown in FIGS.

In the figure, reference numeral 77 denotes a base frame having a groove into which the ends 78 and 79 of the timing belt are fitted. 80 is a U-shaped bracket that surrounds the front, back and top of them. Reference numeral 81 denotes a screw fixing the metal fitting 80 to the base frame 7.

In this way, the vertical bar 12,
The belts 59 and 60 may be cut and cut in accordance with the expansion and contraction of the belts 13 and 16, and the metal fittings 80 may be removed.

Such a timing belt connection device can be designed in various ways, and can be used other than a snow removal device.

The above embodiment can be variously modified. The outline is described below.

A vertical bar or horizontal bar can be made into a triple or quadruple telescopic tube, or a horizontal bar with a length of about 50 cm is attached near the front end of the vertical bars 16 and 17 to prevent the vertical bars 16 and 17 from being twisted, A cushion may be attached to the lower surfaces of the mounting plates 4 and 5 and the like, or vertical and horizontal bars may be formed by channels and angles.

Provide limit switches near the stoppers 10, 11, 20, and 21 so that the motor 6 rotates in reverse when the snow removal rod comes in contact with it, or when a generator is attached to the motor 6 and the output becomes 0, the motor is turned off. You may make it reversely rotate.

In order to prevent the horizontal bar 3 and the vertical bars 12 and 13 from reopening when they are folded and become parallel, instead of tying with a rope as described above, a through hole passing through the horizontal bar 3 and the vertical bar 12 is provided. Alternatively, a through hole may be formed through the horizontal bar 3 and the vertical bar 13, and a screw may be passed through the hole and tightened with a nut to prevent opening.

In the above-described embodiment, even when folded, the entire length cannot be shorter than the length of the horizontal bar.
A joint is provided in the center of the
When used, it may be straightened and fixed with screws, and may be bent 180 ° when not in use.

The above devices may be attached to the southern and northern roofs of a Japanese house, respectively, and the two horizontal bars 3 may be hinged to be integrated.

In this case, one snowplow and one horizontal bar may be used, and the snowplow may reciprocate between the southern eaves and the northern eaves.

Attach a blade to cut snow on the front and rear edges of the lower surface of the snowplow,
At the time of folding, the shafts 31 and 34 may each use a spring for applying a force to move backward and outward.

A number of dents are provided on the outer surface of the vertical bars 16 and 17, and the tips of the screws 44 and 45 are received at arbitrary dents, and the tension of the belt prevents the vertical bars 16 and 17 from retreating. Good.

The central feature of the technical configuration of the present invention is that, by using a joint, a snowplow that was normally sized at the time of use can be folded and reduced in size during storage. Various design changes are possible.

Various designs are also possible for the drive device of the snow removal rod 50, and in implementation, the patent application No. 1518 of 1982 “Snow removal device of continuous belt type roof” and the patent application No. 67272 of 1984 It is desirable to refer to the well-known technology described in "Snow removal device for type roof" and others.

In addition, the power required for the present invention and the snowplow of the sweep-down type roof described in the above-mentioned literature, etc.
It can be used with much less energy requirements.

By implementing the present invention, it is possible to obtain a roof snow remover that can be easily installed and removed on a roof at a low cost, and can be stored in a place where storage when not in use is relatively small, and no parts are separated or dispersed. .

[Brief description of the drawings]

FIG. 1 is a left side view of a warehouse equipped with a roof snow plow according to the present invention. FIG. 2 is a top view thereof. FIG. 3 is an electric circuit diagram. FIG. 4 is an enlarged top view of the detailed structure of the movable frame 57. FIG. 5 is a longitudinal left side view thereof. FIG. 6 is a cross-sectional view. In the figure, 2 is the roof of the warehouse. 3 is a horizontal bar. 4 to 5 are mounting plates. 6 is a motor. 7 is a shaft connected to the motor. 8-9
Is a pulley. 12-13 are vertical bars. 14 ~ 15 is the mounting plate 4 ~ 5
Axis (vertical bar mounting axis). 16-17 are vertical bars
A vertical bar inset into 12-13. 18-19 are pulleys. 26
29 are oblique bars. 30 to 35 are axes. 36-37 are protrusions. 38-39 are screws. 44 to 45 are screws fixing the vertical bar. 50 is a snowplow. 51
Reference numeral 52 denotes a snow plow inserted in the snow plow 50. 59-60 are timing belts. 61 is a power control box. 62 is the code. 63 is a switch. 77 is the element frame. 78 to 79 are ends of the timing belt 69. 80 is a square U-shaped bracket. 81 is a screw.

Claims (3)

(57) [Claims] 1. A mounting plate provided with vertical rod mounting shafts perpendicular to the roof surface is attached to both left and right ends of a horizontal bar placed on the roof along one side of the roof surface. Releasable, allowing the rear end of the bar to be rotatably mounted to form a joint, allowing each bar to lock in a forward-facing position and allowing each bar to take its position on the bar A screw-type vertical bar fixing device is provided, pulleys are attached to the front and rear ends of each vertical bar, belts are laid in parallel with each vertical bar, snow bars parallel to the horizontal bar are attached between the left and right belts, and the left and right belts are attached. A folding roof snow plow equipped with a driving device that drives at the same speed. 2. A rod-shaped member constituting a snowplow is formed into a multiple pipe,
2. The method according to claim 1, further comprising a screw-type fixing device for fixing and releasing the internal tube in an extended length according to the size of the roof. Roof snowplow. 3. A base frame having a groove conforming to the shape of the toothed surface at both ends of a long timing belt, and surrounding the groove,
2. A folding roof snowplow according to claim 1, wherein the snowplow drive is endlessly connected by means of a coupling device consisting of an enclosure mounted on a base frame with screws.