JP2015038286A - Snow removal apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform efficient snow removal work by hot air produced by utilizing high frequency induction heating.SOLUTION: Outdoor air is sucked into a casing 11 by air blowers 14a and 14b. The sucked outside air flows into a cylindrical body of a high frequency induction-heated body 121 via a flow duct 13. The outside air flowing into the cylindrical body of the high frequency induction-heated body 121 is brought into contact with the heated body to be heated to a high temperature and turned into hot air. The hot air is issued from a hot air port 111b to melt snow near a roof, and snow accumulated thereof is dropped from the roof by a wind force and removed from the roof.

Description

  The present invention relates to a snow removal device using high frequency induction heating.

  For example, in a snowy area, snow may accumulate on the roof of a building such as a house or on a road, or ice may freeze, resulting in an obstacle to traffic and life.

  For this reason, as an apparatus for removing snow accumulated on the roof of a building such as a house from the roof, for example, as shown in Patent Document 1, a box-shaped cover is attached to the tip of the arm of a work vehicle similar to a backhoe, Some of the snow covered on the roof is covered with this cover, and hot air is supplied into the cover using a heater to melt the snow.

  Moreover, as an apparatus for removing ice and snow on the road surface, for example, as shown in Patent Document 2, by burning a burner and blowing with a blower, hot air is sent to a rotating brush provided at the tip of an inclined duct, It is also conceivable to use a device that blows away melted ice and snow by rotating a rotating brush with hot air. In addition, the apparatus of this patent document 2 has a wheel and a handle | steering_wheel, and it can move now by an operator holding a handle | steering-wheel and pushing from back.

JP-A-9-328929 Japanese Patent Laid-Open No. 11-217810

  However, in the snow removal device of Patent Document 1 described above, a heater for sending hot air to the work vehicle is mounted, and the hot air is sent to a box-shaped cover attached to the tip of the arm of the work vehicle via a hose. Then, there was a problem that the temperature of the hot air was lowered and the snow removal work could not be performed efficiently.

Further, in the snow removal device of Patent Document 2 described above, combustion by a burner with poor heating efficiency is used, and it takes about 1 minute to melt the ice / snow per 1 m ^2. It took too much time to remove the ice, and there was a problem that it was not possible to perform an efficient ice / snow removal operation.

  This invention is made | formed in view of the said situation, and it aims at providing the snow removal apparatus which can perform an efficient snow removal operation | work with the hot air produced | generated using the high frequency induction heating.

In order to achieve the above object, the snow removal device of the present invention comprises:
A snow removal device that removes snow by blowing hot air,
A casing through which the blown outside air is sucked;
A high-frequency induction heating unit that is disposed in the casing and converts the sucked outside air into hot air by high-frequency induction heating;
A hot air outlet is formed below the casing and blows out hot air generated by the high-frequency induction heating unit.

  The high-frequency induction heating unit is composed of a plurality of high-frequency induction heating bodies, and the high-frequency induction heating body is wound around a cylindrical body into which outside air flows and flows out as hot air, and a high-frequency induction current is generated around the cylindrical body. You may make it provide the induction coil supplied and the heat generating body which is provided in the said cylinder and contacts the inflowing external air.

  The snow removal device may be installed suspended from the tip of a multi-stage boom that is pivotably and refractably connected to a work vehicle.

  The snow removal device may be installed suspended from the tip of the multistage boom via a rotating shaft.

  The snow removal device may be installed suspended from the tip of the multistage boom via a swingable support shaft connected to the rotating shaft.

  The snow removal device may remove snow accumulated on a roof or cliff of a building.

The snow removal device is a snow removal device for removing snow accumulated on a roof or cliff of a building,
It may be provided on both side surfaces of the casing, and may have a pair of laser distance meters for measuring the slope of the roof or cliff, or confirming the presence or absence of contact between the roof or cliff and the casing. .

  The snow removal device includes a compressor that sucks and compresses outside air into the casing, a hose that is provided below the high-frequency induction heating unit and that has heat conductivity to which the outside air compressed from the compressor is sent, and both sides of the casing In order to remove snow on the roof or cliff of the laser beam emitted from the laser rangefinder, the outside air flowing through the hose is provided on the surface and the lower end of the hose is inserted. You may make it have a pair of hot air blowing nozzle which blows off the hot air produced by heating.

  The snow removal device may remove snow by dropping snow that has fallen from the roof or cliff onto the ground into a drifting groove.

  The snow removal device may remove ice or snow adhering to an aircraft fuselage, main wing, or tail wing. The term “ice and snow” as used herein means at least one of snow accumulated on the fuselage of the aircraft, main wing or tail, and ice on the frozen fuselage, main wing or tail.

  The snow removal device may be installed in front of the vehicle to remove snow and ice on the road. In addition, the ice and snow here means at least one of the snow accumulated on the road and the ice on the frozen road.

  ADVANTAGE OF THE INVENTION According to this invention, the snow removal apparatus which can perform an efficient snow removal work with the hot air produced | generated using the high frequency induction heating can be provided.

It is a perspective view which shows the structure of the snow removal apparatus which concerns on the 1st Embodiment of this invention. It is a side view which shows the structure of the snow removal apparatus which concerns on the 1st Embodiment of this invention, and its periphery. It is a front view which shows the structure of the snow removal apparatus which concerns on the 1st Embodiment of this invention, and its periphery. It is a perspective view which shows the structure of the high frequency induction heating body which the snow removal apparatus which concerns on the 1st Embodiment of this invention has. It is explanatory drawing for demonstrating operation | movement of the high frequency induction heating body which the snow removal apparatus which concerns on the 1st Embodiment of this invention has. It is explanatory drawing which shows the condition where hot air blows off from the hot air blower outlet which the snow removal apparatus which concerns on the 1st Embodiment of this invention has, and it sprays on snow. It is front explanatory drawing for demonstrating the method to measure the gradient of a roof with the snow removal apparatus which concerns on the 1st Embodiment of this invention. It is side surface explanatory drawing for demonstrating the method to measure the gradient of a roof with the snow removal apparatus which concerns on the 1st Embodiment of this invention. It is a front view which shows the structure of the laser distance meter which the snow removal apparatus which concerns on the 1st Embodiment of this invention has, a hot air blowing nozzle, and its periphery. It is explanatory drawing for demonstrating the snow removal work performed with the snow removal apparatus which concerns on the 1st Embodiment of this invention. It is explanatory drawing for demonstrating the snow removal work performed by the snow removal apparatus which concerns on the 2nd Embodiment of this invention. (A) is explanatory drawing for demonstrating the snow removal work of the aircraft performed by the snow removal apparatus which concerns on the 3rd Embodiment of this invention, (b) is the description for demonstrating the snow removal work in the fuselage | body of an aircraft. It is a figure, (c) is explanatory drawing for demonstrating the snow removal operation | work in the main wing of an aircraft. It is explanatory drawing which shows the structure of the snow removal apparatus which concerns on the 4th Embodiment of this invention, and its periphery. It is explanatory drawing for demonstrating the snow removal work performed by the snow removal apparatus which concerns on the 4th Embodiment of this invention.

[First Embodiment]
A snow removal device according to a first embodiment of the present invention will be described below with reference to the drawings.
The snow removal device according to the present embodiment is a device that can remove snow accumulated on the roof of a house from the roof by hot air generated using high-frequency induction heating in a snowy area or the like.

  As shown in FIGS. 2 and 10, the snow removal device 1 is installed at the tip of the boom 21 of the work vehicle 2, and is used by moving the boom 21 and the like on the roof 50 of the house.

  As shown in FIGS. 1 to 3, the snow removal device 1 includes a casing 11, a high-frequency induction heating unit 12 including a plurality of high-frequency induction heating members 121 arranged in the casing 11, and a high-frequency induction heating unit 12. A pair of blowers 14 for blowing outside air through the air duct 13, a high-frequency oscillator 15 for supplying high-frequency induction current to the high-frequency induction heating unit 12, and a pair for measuring the gradient of the roof 50 of the house It has a laser distance meter 16 and a compressor 19 for sending hot air to a hot air blowing nozzle 11d described later.

  The casing 11 has a storage part 11a in which the high-frequency induction heating part 12, the blower 14 and the like are stored, and a hot air blowing part 11b formed below the storage part 11a. Further, on the left and right side surfaces of the casing 11, a pair of protective covers 11 c that protect the laser distance meter 16, a pair of hot air blowing nozzles 11 d for measurement by the laser distance meter 16, and the blower 14 suck in outside air. A pair of outside air inlets 11e and a pair of inspection windows 11f for inspecting the state inside the casing 11 are formed. An opening / closing door 11g used for confirming the state of the high-frequency oscillator 15 is formed on the back surface of the casing 11. The casing 11 is made of, for example, a lightweight aluminum material.

  A hot air outlet 111b through which hot air for snow removal blows out is formed at the lowermost part of the hot air outlet 11b of the casing 11. The hot air blowing part 11b is formed to be inclined forward so that the hot air from the high frequency induction heating part 12 can be easily blown forward from the hot air outlet 111b. Further, the hot air blowing portion 11b is formed such that a tip portion including the lowermost hot air blowing port 111b protrudes forward. Thus, since the front-end | tip part containing the hot-air blower outlet 111b of the hot-air blowing part 11b protrudes ahead and is formed, as shown in FIG. 6, it is between the snow between the hot air on the roof 50 and the roof 50, as shown in FIG. It becomes easy to blow out.

  A pair of blowers 14 (14 a, 14 b) are disposed above the left and right side surfaces in the casing 11. The blower 14 sucks outside air from the outside air inlet 11 e and blows it to the air duct 13. Two air ducts 13 (13 a, 13 b) are arranged in parallel above the casing 11. One blower 14a blows outside air only to one blower duct 13a, and the other blower 14b blows outside air only to the other blower duct 13b. Therefore, sufficient outside air can be taken into the casing 11. As shown in FIG. 1, the air duct 13 branches off toward the high-frequency induction heaters 121 arranged side by side. In the vicinity of each branch portion of the air duct 13, an air volume adjusting damper 17 for adjusting the air volume is provided. The amount of air blown by the blower 14 and the wind speed are controlled by the control unit 32a described later.

  As shown in FIG. 4, the high frequency induction heating body 121 includes a cylinder 121a, a heating element 121b provided in the cylinder 121a, and an induction coil 121c wound around the outer periphery of the cylinder 121a. . A heat resistant material is used for the cylinder 121a, for example, ceramic wool or the like. The heating element 121b is composed of a plurality of metal plates, and the plurality of metal plates are provided radially in the cylinder 121a. For example, a magnetic material is used for the heating element 121b.

  As shown in FIG. 5, the high-frequency oscillator 15 converts the AC power supplied from the generator 22 into a high frequency and supplies it to the induction coil 121 c of the high-frequency induction heating body 12. For example, a diesel generator is used as the generator 22. The generator 22 is mounted on the work vehicle 2.

  When a high frequency induction current is supplied from the high frequency oscillator 15 to the induction coil 121c of the high frequency induction heating body 121, the heating element 121b in the cylindrical body 121a generates heat due to the high frequency induction heating. The outside air that has flowed into the cylinder 121a from the blower 14 through the blower duct 13 comes into contact with the heating element 121b and is heated to a high temperature to become hot air. Hot air heated to a high temperature is blown out from the hot air outlet 111b. Although the suitable temperature of the hot air blown out from the hot air outlet 111b is about 150 ° C. to 200 ° C., the temperature of the hot air is set to a desired temperature by controlling the output of the high-frequency oscillator 15 by the control unit 32a described later. It can be done.

  As shown in FIG. 5, a blowing temperature regulator 121d is provided in the vicinity of the hot air outlet of the cylinder 121a. The blowing temperature controller 121d is used to prevent the roof 50, the heating element 121b, and the like from being abnormally heated. The blowing temperature controller 121d has a temperature sensor (not shown). When the temperature sensor detects that the hot air blowing temperature is equal to or higher than a predetermined temperature, the blowing temperature regulator 121d is connected to the high-frequency oscillator 15 via the control unit 32a described later. A control signal for stopping the supply of the high-frequency induction current to the induction coil 121c of the high-frequency induction heating body 121 is transmitted.

  The laser rangefinder 16 is used for measuring the slope of the roof 50 that removes snow and for checking whether the casing 11 and the roof 50 are in contact with each other. By measuring the slope of the roof 50 with the laser distance meter 16, the snow removal device 1 can be easily moved along the slope of the roof 50, and between the casing 11 and the roof 50 with the laser distance meter 16. By measuring the distance, it is possible to prevent the roof 50 from being damaged by checking that the casing 11 does not come into contact with the roof 50.

  As shown in FIGS. 7 and 9, the laser distance meter 16 (16 a, 16 b) is provided on both side surfaces of the casing 11 via a heat insulating material 18. The pair of laser distance meters 16 a and 16 b are installed at the same height on both side surfaces of the casing 11. The heat insulating material 18 is used to prevent the heat in the casing 11 from being directly transferred to the laser rangefinder 16.

  The laser rangefinder 16 measures the distance between the laser rangefinder 16 and the roof 50 based on the transmission time from when the laser beam is irradiated onto the roof 50 and the reflected light returns. A hot air blowing nozzle 11 d is provided below the laser distance meter 16 so as not to block the laser light from the laser distance meter 16.

  A heat-transmitting hose 19a is connected to the compressor 19 via a pipe. As the hose 19a having heat conductivity, for example, a thin hose made of stainless steel is used. The hose 19a is provided below the high-frequency induction heating body 12 so that hot air from the high-frequency induction heating body 12 is hit. The lower end of the hose 19a is inserted into the hot air blowing nozzle 11d.

  The compressor 19 sucks and compresses the outside air and sends the compressed outside air to the hose 19a. The outside air flowing through the hose 19a becomes hot air when hot air from the high-frequency induction heating body 12 is blown onto the hose 19a. Hot air flowing out from the lower end of the hose 19a is blown out from the hot air blowing nozzle 11d. The outside air compressed by the compressor 19 is adjusted in flow rate to the hose 19a by a valve (not shown).

  As shown in FIGS. 7 and 8, the hot air from the hot air blowing nozzle 11 d is blown out toward the snow accumulated on the roof 50, and the irradiation portion of the laser light emitted from the laser rangefinder 16 to the roof 50 is irradiated. Remove snow. Thereby, accurate measurement by the laser distance meter 16 can be performed. The hot air blowing nozzle 11d is formed so that its inner diameter increases as it goes downward.

  In order to measure the gradient of the roof 50, as shown in FIG. 7, a rotation shaft 26, which will be described later, is set so that the pair of laser distance meters 16a and 16b are positioned along the horizontal component of the gradient of the roof 50. By rotating, the casing 11 is rotated 90 degrees from the state where the snow removal work is performed and is turned sideways so as to maintain the horizontal state.

  The laser distance meters 16a and 16b are irradiated with laser light from the pair of laser distance meters 16a and 16b to the portion of the roof 50 that has been snow-removed by the hot air blowing nozzle 11d, and based on the transmission time until the reflected light returns. And distances d1 and d2 between the roof 50 and the roof 50 are measured. The gradient of the roof 50 is calculated from the difference d3 between the distance d1 and the distance d2 and the predetermined distance d4 between the pair of laser rangefinders 16a and 16b.

  When the presence or absence of contact between the casing 11 and the roof 50 is confirmed by the pair of laser distance meters 16a and 16b, the distance between the lowermost end of the casing 11 and the roof 50 is set to the distances d1 and d2 and the laser distance. Measurement is performed by calculating the difference from a predetermined distance d5 from the total 16a, 16b to the lowermost end of the casing 11.

  As shown in FIG. 10, the boom 21 in which the snow removal device 1 is installed includes a first boom 21 a, a second boom 21 b, and a third boom 21 c that are three-stage multistage booms that are refractably connected. Configured.

  The work vehicle 2 is equipped with a turntable 23 having a turnable support post 23a, and a third boom 21c is connected to the end of the support post 23a. The swivel base 23 is swung by a hydraulic cylinder (not shown). A hydraulic cylinder 24c is provided between the column 23a and the third boom 21c. By extending and retracting the hydraulic cylinder 24c, the third boom 21c can be rotated with respect to the column 23a.

  The distal end of the third boom 21c and the proximal end of the second boom 21b are connected. A hydraulic cylinder 24b is provided between the third boom 21c and the second boom 21b, and the second boom 21b rotates with respect to the third boom 21c by driving the hydraulic cylinder 24b to extend and contract. It becomes possible. The distal end of the second boom 21b and the proximal end of the first boom 21a are connected. A hydraulic cylinder 24a is provided between the second boom 21b and the first boom 21a, and the first boom 21a rotates relative to the second boom 21b by driving the hydraulic cylinder 24a to extend and contract. It becomes possible.

  The snow removal device 1 installed on the first boom 21a by turning the first to third booms 21a, 21b, 21c by the swivel base 23 and bending the first to third booms 21a, 21b, 21c. Can be moved to a desired position on the roof 50.

  As shown in FIG. 2, the snow removal device 1 is installed at the tip of the first boom 21 a via a support shaft 25, a rotation shaft 26, and a suspended portion 27. The support shaft 25 that supports the snow removal device 1 is connected to the first boom 21a so as to be swingable by a pin 25b. A hydraulic cylinder 24d is provided between the support shaft 25 and the first boom 21a. By extending and contracting the hydraulic cylinder 24d, the support shaft 25 swings with the pin 25b as a fulcrum. A flange portion 25 a is formed at the lower end of the support shaft 25.

  A flange portion 26a is formed on the upper end of the rotating shaft 26 that rotates the snow removal device 1, and a tooth portion 261a is formed on the outer periphery of the flange portion 26a. The tooth portion 261 a is engaged with the pinion 28 a of the motor 28, and the rotating shaft 26 is driven to rotate by the motor 28. A suspension portion 27 for suspending the snow removal device 1 is fixed to the lower end of the rotating shaft 26.

  The support shaft 25 and the rotation shaft 26 are connected to each other by a shaft connecting portion 29 with their axes aligned. The shaft connecting portion 29 has an upper case 29a and a lower case 29b whose center is opened. By fastening the flange portions of the upper case 29a and the lower case 29b with the fastening member 29c, the buffer member 30a housed therein, the flange portion 25a at the lower end of the support shaft 25, the buffer member 30b, and the upper end of the rotary shaft 26 The flange portion 26a, the thrust bearing 31 and the buffer member 30c are clamped. The thrust bearing 31 supports the rotary shaft 26 in a rotatable manner. The motor 28 is also housed in the upper case 29a and the lower case 29b.

  The suspension part 27 fixed to the lower end of the rotating shaft 26 has a suspension arm part 27a. The suspension arm portion 27 a is connected to the upper side of the casing 11 of the snow removal device 1. As a result, the snow removal device 1 can rotate as the rotation shaft 26 rotates, and the snow removal device 1 can swing as the support shaft 25 connected to the rotation shaft 26 swings. The first boom 21a is provided with a camera 31 for confirming the operation of the snow removal device 1, the snow removal condition, and the like. The image by the camera 31 can be monitored by a monitor (not shown) mounted on the work vehicle 2.

  A control panel 32 is mounted on the work vehicle 2. The control panel 32 includes a control unit 32a (FIG. 5). The control unit 32a includes the generator 22, the high frequency oscillator 15, the laser distance meter 16, the blower 14, the compressor 19, the blowout temperature controller 121d, and the hydraulic cylinders 24a to 24d. , A CPU (Central Processing Unit) 321a for performing control and arithmetic processing of a hydraulic cylinder (not shown) for rotating the swivel base 22, a motor 28, a camera 31, and the like, and a memory storing a program and control information for controlling them 322a and the like. An operation unit 33 is connected to the CPU 321a. An operation signal for operating each device such as the generator 22 by the operation unit 33 is output to the CPU 321a. Note that power cables and signal cables (not shown) connected to devices used in the snow removal device 1 are collectively arranged along the boom 21.

  Here, the snow removal method by the snow removal device 1 will be described. First, the work vehicle 2 is stopped at a place where snow removal work is easy in the vicinity of a house where snow has accumulated on the roof 50. The outrigger 34 is grounded to stabilize the work vehicle 2. The work vehicle 2 includes a GPS (Global Positioning System) device 35 for confirming position information of the work vehicle 2.

  The first boom is refracted by causing the hydraulic cylinder (not shown) to be extended and retracted to turn the swivel base 23, and the hydraulic cylinders 24a to 24c to be extended and retracted to refract the first to third booms 21a, 21b, and 21c. The snow removal device 1 installed in 21a is moved to an appropriate snow removal work start position on the roof 50 of the house where snow has accumulated. The snow removal device 1 is arranged so that the front faces the direction in which the slope of the roof 50 is lowered and the hot air outlet 111b is kept horizontal.

  Next, the motor 28 is driven, and the casing 11 is rotated 90 degrees through the rotating shaft 26 while keeping the horizontal state to be turned sideways. The pair of laser rangefinders 16 a and 16 b provided on the side surface of the casing 11 is disposed at a position along the horizontal component of the descending slope of the roof 50.

  The blower 14 sucks outside air and blows it to the blow duct 13. Outside air from the air duct 13 flows into the cylinders 121a of the high-frequency induction heating bodies 121 arranged in parallel. The high frequency oscillator 15 converts the AC power supplied from the generator 22 into a high frequency and supplies it to the induction coil 121c of the high frequency induction heating body 121 to cause the heating element 121b in the cylindrical body 121a to generate heat. Thereby, the outside air that has flowed into the cylinder 121a is heated and flows out as hot air.

  The outside air sucked in by the compressor 19 is compressed and sent to the hose 19a having heat conductivity. The outside air flowing through the hose 19a becomes hot air by blowing hot air flowing out from the cylinder 121a, and this hot air is blown out from the hot air blowing nozzle 11d.

  The hot air from the hot air blowing nozzle 11d is blown out toward the snow accumulated on the roof 50 to remove snow. The portion of the roof 50 that has been snow-removed by hot air from the hot air blowing nozzle 11d is irradiated with laser light from the pair of laser distance meters 16a and 16b, and the gradient of the roof 50 is measured.

  Next, the motor 28 is driven to rotate the casing 11 through the rotary shaft 26 by 90 degrees while maintaining the horizontal state, so that the front surface returns to the original position facing the direction in which the slope of the roof 50 is lowered. By refracting the first to third booms 21a, 21b, 21c, and turning the first to third booms 21a, 21b, 21c by the swivel base 23, along the measured gradient of the roof 50, While moving the snow removal device 1 to a desired position on the roof 50, the hot air generated by the high frequency induction heating body 121 is blown out from the hot air outlet 111b toward the accumulated snow to remove snow. Basically, as shown in FIG. 6, hot air is blown out from the hot air outlet 111b, blown and melted on the snow in the vicinity of the roof 50, and the snow accumulated thereon is dropped from the roof 50 by the wind force. Although it removes from the roof 50, of course, all the snow accumulated on the roof 50 can also be melted with hot air. In addition, the snow dropped on the ground is dropped into the flowing snow groove 61 and discharged.

  By irradiating the laser beam from the laser distance meter 16 to the portion of the roof 50 that has been snow-removed by the hot air from the hot air blowing nozzle 11d at a predetermined time interval, the distance between the casing 11 and the roof 50 is measured. The snow removal work is performed while confirming whether or not 11 and the roof 50 are in contact. When contact between the casing 11 and the roof 50 is confirmed, the snow removal operation is immediately stopped.

  Depending on the shape of the roof 50, the shape of snow, the amount of snow, etc., the hydraulic cylinder 24d is expanded and contracted to swing the snow removal device 1 via the support shaft 25, thereby changing the blowing angle of hot air from the hot air outlet 111b. Adjust to remove snow. Further, snow removal is performed by rotating the snow removal device 1 at a desired angle via the rotation shaft 26 according to the shape of the roof 50, the shape and amount of snow, and the like. Note that the snow removal work is performed while confirming an image by the camera 31 such as the position, movement state, and snow removal state of the snow removal device 1 on a monitor (not shown).

  In the gable roof, after the removal of the snow on the front roof 50a is completed, the motor 28 is driven to rotate the casing 11 through the rotating shaft 26 while maintaining the horizontal state by 180 degrees. The third boom 21a, 21b, 21c is refracted and the casing 11 is moved across the ridge, and snow removal work on the backside roof 50b is similarly performed. Thereby, it is possible to carry out the snow removal work of the snow on the roof 50b on the back side without moving the work vehicle 2.

  Thus, in the snow removal device of the present embodiment, hot air heated to a high temperature by the high-frequency induction heating body 121 arranged in the casing 11 is blown out from the hot air outlet 111b and directly hits the accumulated snow on the roof 50. As a result, efficient snow removal work can be performed.

  Further, in the snow removal device of the present embodiment, the high-frequency induction heating unit 12 that can realize high-temperature heating is smaller than other types of heating devices, so the casing 11 that houses the high-frequency induction heating unit 12 is downsized. Since it can be reduced in weight, it can be easily moved on the roof 50. In addition, since the casing 11 is reduced in size and weight, damage to the roof 50 can be reduced or prevented even if the casing 11 contacts the roof 50 by any chance.

  Moreover, in the snow removal apparatus of this Embodiment, since it moves on the roof 50 using the refraction | bending of the boom 21 which is a multistage boom, and the turning of the boom 21 by the turntable 23, it moves to a desired position. Accurate movement is possible.

  Moreover, in the snow removal apparatus of this Embodiment, since it was able to rotate via the rotating shaft 26, after the snow removal work on one roof 50a is complete | finished, for example in a gable roof, the work vehicle 2 is moved. Therefore, the snow removal work on the other roof 50b can be performed, and the snow removal work can be performed efficiently. Further, in the snow removal device of the present embodiment, it is possible to remove snow by rotating it at a desired angle via the rotary shaft 26 according to the shape of the roof 50 and the like, so snow removal without leaving snow on the roof 50 is left. it can.

  Moreover, in the snow removal apparatus of this Embodiment, since it was made to rock | fluctuate via the support shaft 25, according to the shape etc. of the roof 50, adjusting the blowing angle of the hot air from the hot air blower outlet 111b. The snow can be removed without leaving snow on the roof 50.

  Further, in the snow removal device of the present embodiment, the laser beam is irradiated from the laser distance meters 16a and 16b to the portion of the roof 50 that has been removed by hot air from the hot air blowing nozzle 11d, and the gradient of the roof 50 is measured. Since snow is removed by moving on the roof 50 based on the measured gradient, efficient snow removal work can be performed. Further, since the snow removal operation is performed while confirming that the casing 11 is not in contact with the roof 50 using the laser distance meters 16a, 16b, etc., the casing 11 is in contact with the roof 50 and the roof 50 is damaged. Can be prevented.

[Second Embodiment]
Next, a snow removal device according to a second embodiment of the present invention will be described with reference to FIG. In FIG. 11, the same components as those described in the first embodiment are denoted by the same reference numerals, and redundant description is omitted. Here, differences from the first embodiment will be mainly described. The configuration of the snow removal device 1 of the second embodiment is the same as that of the first embodiment. The snow removal device 1 according to the second embodiment melts the snow accumulated on the cliff 60, drops the snow from the cliff 60 and removes it, and also drops the snow on the ground and the accumulated snow. Is melted and dropped into the flowing snow groove 61 which is a facility for discharging snow using running water and removed.

  When it is necessary to remove snow at a high place such as the cliff 60, it is necessary to increase the number of booms 21, and a fourth boom 21d is added to form a four-stage system. Hot air is blown out from the hot air outlet 111b and blown and melted on the snow near the cliff, and the snow accumulated on the cliff 60 is dropped from the cliff 60 and removed from the cliff 60. By using the laser distance meter 16, the hot air blowing nozzle 11d, and the like, the snow removal work can be performed while measuring the slope of the cliff 60 and confirming the presence or absence of contact between the cliff 60 and the casing 11. Further, according to the shape of the cliff 60, the shape and amount of snow, the snow removal device 1 is swung via the support shaft 25 to adjust the blowing angle of the hot air from the hot air outlet 111b, and the rotating shaft 26 By rotating the snow removal device 1 at a desired angle via the snow removal, it is possible to remove snow without leaving snow accumulated on the cliff 60.

  Further, the snow removal device 1 removes snow from above the ground by dropping snow dropped on the ground from the roof 50 and the cliff 60, snow accumulated on the ground, and the like onto the snow flow groove 61 through a snow outlet (not shown). be able to. Hot air is blown out from the hot air outlet 111b, blown to the snow near the ground and melted, and the snow accumulated thereon by the wind force is dropped into the snow flow groove 61 through a snow outlet (not shown).

[Third Embodiment]
Next, a snow removal device according to a third embodiment of the present invention will be described with reference to FIG. In FIG. 12, the same components as those described in the first embodiment are denoted by the same reference numerals, and redundant description is omitted. Here, differences from the first embodiment will be mainly described. The configuration of the snow removal device 1 of the third embodiment is the same as that of the snow removal device 1 of the first embodiment. In an airfield such as a cold region, snow may accumulate on the aircraft or freeze, and ice and snow may adhere to the aircraft. The snow removal device 1 of the third embodiment is used to remove at least one of snow and ice that have adhered to the aircraft in this way.

  The snow removal device 1 of the third embodiment blows hot air from the hot air outlet 111b, blows and melts hot air on the ice and snow adhering to the fuselage 71, main wing 72, tail wing 73, etc. of the aircraft 70, It is dropped from the top of the aircraft 70 by wind force and removed. Depending on the state of the adhering ice and snow, all the ice and snow adhering on the fuselage 71, main wing 72, tail wing 73, etc. of the aircraft 70 can be melted by hot air. Further, the gradient of the main wing 72, the tail wing 73, etc. is measured using the laser distance meter 16, the hot air blowing nozzle 11d, etc., and the presence or absence of contact between the fuselage 71, the main wing 72, the tail wing 73 and the casing 11 is confirmed. Snow removal work can be performed. In addition, according to the shape of the fuselage 71, the main wing 72, the tail wing 73 of the aircraft 70, the shape and amount of ice and snow, the snow removal device 1 is swung through the support shaft 25, and the blowing angle of hot air from the hot air outlet 111b Further, the snow removal device 1 is rotated at a desired angle via the rotation shaft 26, so that the snow can be removed without leaving the snow accumulated on the aircraft 70.

[Fourth Embodiment]
Next, a snow removal device according to a fourth embodiment of the present invention will be described with reference to FIGS. In FIG. 13 and FIG. 14, the same components as those described in the first embodiment are denoted by the same reference numerals, and redundant description is omitted. Here, differences from the first embodiment will be mainly described. The snow removal device 10 according to the fourth embodiment removes at least one of the snow accumulated on the road and the ice on the frozen road.

  The snow removal device 10 is fixed to the front surface of the vehicle 80 via an impact cushioning material 81. A wheel 82 is attached to the bottom of the casing 11 of the snow removal device 10. In the snow removal device 10, a blower 83 is mounted on a vehicle 80 having a protective cover 86, and outside air blown from the blower 83 is sent to one blower duct 13 in the casing 11 via an external blower duct 84. It is done. The air duct 13 is branched toward the high-frequency induction heaters 121 arranged in parallel.

  The high-frequency oscillator 15 is also mounted on the vehicle 80 together with the generator 22 and the control panel 32. In addition, the snow removal apparatus 10 does not have the laser distance meter 16 and the hot air blowing nozzle 11d in the first embodiment. Further, since the snow removal device 10 is fixed to the front surface of the vehicle 80, the support shaft 25, the rotation shaft 26, and the suspended portion 27 in the first embodiment are not required.

  In the snow removal device 10, a camera 85 with a light for confirming the snow removal condition and the like is installed above the casing 11 and behind the vehicle 80. The image from the camera 85 can be monitored by a monitor (not shown) mounted on the vehicle 80.

  In the snow removal device 10, the width of the casing 11 and the width of the hot air outlet 111 b are formed larger than those of the snow removal device 1 of the first embodiment in order to remove ice and snow on the road. In addition, a larger number of eight high-frequency induction heaters 121 are installed in the casing 11 than in the snow removal device 1 of the first embodiment, and four generators 22 having a larger output than those used in the snow removal device 1 are provided. The high frequency oscillator 15 is used.

  In the snow removal device 10 of the present embodiment, the hot air heated to a high temperature by the high-frequency induction heating body 121 disposed in the casing 11 is blown out from the hot air outlet 111b while the vehicle 80 is running. It is possible to remove snow from the road by blowing hot air on the snow on the road and melting it, and then the water generated by the melting of the ice and snow can be removed from the road by pushing it to the drainage channel. it can.

  In the snow removal device 10, in order to make it easier for the water generated by melting the ice and snow by blowing hot air to flow into the drainage groove provided in the side groove on the outside of the road, compared to the high-frequency induction heating body 121 disposed on the inside of the road. You may make it adjust using the air volume adjustment damper 17 etc. so that the air volume of the external air which flows into the high frequency induction heating body 121 arrange | positioned on the outer side of a road may increase.

  The present invention has been described with reference to the first to fourth embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications can be made. For example, in the first embodiment, the example in which the roof 50 of the house that removes the accumulated snow is a gable roof has been described. However, the type of the roof 50 is not limited to the gable roof. Snow removal can be performed even on square roofs, single-flow roofs, and the like. In addition to houses, the snow removal device of the present invention can remove snow that has accumulated on the roofs of buildings such as warehouses, factories, buildings, and condominiums. In addition, the snow removal device of the present invention can remove snow accumulated on a flat roof. In this case, all the snow is melted with hot air, or the snow near the roof is melted with hot air. However, the snow piled on it is dropped and removed by wind power.

  In each of the above embodiments, the heating element 121b of the high-frequency induction heating body 121 has been described as an example in which a plurality of metal plates are provided radially in the cylinder 121a. However, the heating element 121b is disposed in the cylinder 121a. Any structure may be used as long as the outside air that has flowed into the container can come into contact with it and flow out of the cylinder 121a as hot air. For example, the heating element 121b may have a metal core or a metal cylinder along the central axis of the cylinder 121a. And you may make it comprise the heat generating body 121b with a concentric metal cylinder.

  In the first to third embodiments, the example in which the snow removal device 1 can be rotated via the rotation shaft 26 by controlling the rotation of the motor 28 has been described. However, the rotation shaft 26 is rotated. The mechanism to be operated is not limited to this. For example, the rotating shaft 26 may be rotated 90 degrees or 180 degrees using an electromagnetic clutch.

  In the first to third embodiments, the example in which the support shaft 25 and the rotation shaft 26 are used in the snow removal device 1 has been described. However, for example, when the roof 50 or the like that performs snow removal is a flat surface, It is not always necessary to use the support shaft 25 and the rotation shaft 26, or either one may be used.

  In the first to third embodiments, the laser distance meter 16 is used to measure the gradient of the roof 50 or the like that removes snow, and to check whether the casing 11 and the roof 50 or the like are in contact with each other. Although the example used for two purposes has been described, the laser distance meter 16 does not necessarily need to be used for two purposes, and may be used for any one purpose depending on the snow removal situation or the like.

  In the first to third embodiments, the example in which the snow removal device 1 includes the laser distance meter 16, the hot air blowing nozzle 11d, the compressor 19, and the hose 19a has been described. When there is no gradient, the snow removal device 1 does not necessarily have these.

  In the first to third embodiments, the example in which the snow removal device 1 includes the hot air blowing nozzle 11d, the compressor 19, and the hose 19a has been described. However, by using hot air from the hot air blowing port 111b, the laser distance is increased. When it is possible to remove snow from a portion irradiated with the laser beam irradiated from the total 16 to the roof 50 or the like, the snow removal device 1 does not necessarily have the hot air blowing nozzle 11d, the compressor 19 and the hose 19a.

  Moreover, although each said embodiment demonstrated the example which formed the front-end | tip part including the hot-air blower outlet 111b of the lowest part of the casing 11 protruding ahead, the hot-air blowing part 11b whole is formed in smooth curved surface shape. You may do it.

  In the first to third embodiments, the snow removal device 1 has six high-frequency induction heating bodies 121. In the fourth embodiment, the snow removal device 10 has eight high-frequency induction heating bodies. Although the example which has 121 was demonstrated, the number of the high frequency induction heating bodies 12 is not limited to these, It is possible to adjust the number of the high frequency induction heating bodies 121 with the area, snow accumulation amount, etc. which remove snow.

  In the first to third embodiments, the snow removal device 1 has two air ducts 13, and in the fourth embodiment, the snow removal device 10 has one air duct 13. Although demonstrated, the number of the ventilation ducts 13 is not limited to these, It can adjust. For example, the snow removal device 10 may have two air ducts 13 in the casing 11 and the external air duct 84 may be bifurcated and connected to each other.

  In the first to third embodiments, the example in which the snow removal device 1 has a pair of blowers 14 has been described. However, the outside air is blown to one blower duct 13 so as to have one blower 14. You may make it do.

  In the first and third embodiments, an example in which the three-stage multistage arm 21 is used and the second embodiment uses the four-stage multistage arm 21 has been described. The number of stages of the multistage arm 21 is not limited thereto, and the number of stages of the multistage arm 21 can be adjusted according to the height of the position where snow is removed, the area where snow is removed, and the like.

  In addition, by attaching a heat-resistant elastic body such as silicon rubber to the hot air outlet 111b of the snow removal device of the present invention, the hot air outlet 111b should contact the roof, cliff, aircraft, road, etc. Even in this case, damage to the hot air outlet 111b and the roof may be reduced or prevented.

DESCRIPTION OF SYMBOLS 1,10 Snow removal apparatus 11 Casing 111b Hot-air blowing outlet 11d Hot-air blowing nozzle 12 High frequency induction heating part 121 High frequency induction heating body 121a Cylindrical body 121b Heat generating body 121c Inductive coil 13 (13a, 13b) Blower duct 84 Blower duct 14 (14a, 14b ) Blower 83 Blower 15 High-frequency oscillator 16 (16a, 16b) Laser distance meter 19 Compressor 19a Hose 2 Work vehicle 21 (21a-21d) Boom 22 Generator 23 Swivel base 23a Strut 25 Support shaft 26 Rotating shaft 27 Suspended lower portion 28 Motor 29 Axle connecting part 32 Control panel 32a Control part 60 Cliff 61 Snow drift groove 70 Aircraft 80 Vehicle

Claims (11)

A snow removal device that removes snow by blowing hot air,
A casing through which the blown outside air is sucked,
A high-frequency induction heating unit that is disposed in the casing and converts the sucked outside air into hot air by high-frequency induction heating;
A snow removal device comprising a hot air outlet that is formed below the casing and blows out hot air generated by the high-frequency induction heating unit.   The high-frequency induction heating unit is composed of a plurality of high-frequency induction heating bodies, and the high-frequency induction heating body is wound around a cylindrical body into which outside air flows and flows out as hot air, and a high-frequency induction current is generated around the cylindrical body. The snow removal device according to claim 1, further comprising: an induction coil to be supplied; and a heating element that is provided in the cylindrical body and that contacts the inflowing outside air.   The snow removal device according to claim 1, wherein the snow removal device is suspended from a tip of a multistage boom that is pivotally and bendably connected to the work vehicle.   The snow removal device according to claim 3, wherein the snow removal device is suspended from a tip of the multistage boom via a rotating shaft.   5. The snow removal device according to claim 4, wherein the snow removal device is suspended from a tip of the multistage boom via a swingable support shaft connected to the rotation shaft.   The snow removal device according to any one of claims 3 to 5, wherein the snow accumulated on the roof or cliff of the building is removed. A snow removal device that removes snow on the roof or cliff of a building,
It is provided on both sides of the casing, and has a pair of laser distance meters for measuring the slope of the roof or cliff, or confirming the presence or absence of contact between the roof or cliff and the casing. The snow removal device according to claim 4 or 5.   A compressor that sucks and compresses outside air into the casing, a hose that is provided below the high-frequency induction heating unit and that has heat conductivity to which the outside air compressed from the compressor is sent, and is provided on both sides of the casing The lower end of the hose is inserted, and the outside air flowing through the hose is heated by the high-frequency induction heating unit in order to remove snow from the laser beam irradiated to the roof or cliff from the laser rangefinder. The snow removal device according to claim 7, further comprising a pair of hot air blowing nozzles for blowing out hot air.   The snow removal device according to any one of claims 6 to 8, wherein the snow that has fallen from the roof or the cliff to the ground is dropped into a flowing snow groove to remove snow.   The snow removal device according to any one of claims 3 to 5, wherein the snow and ice adhering to the fuselage, main wing or tail wing of an aircraft is removed.   The snow removal device according to claim 1, wherein the snow removal device is installed in front of the vehicle and removes ice and snow on the road.

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