JP2019120088A - Snow-melting system - Google Patents

Abstract

To provide a snow-melting system which enhances the snow-melting performance by spraying a pressurized air stream along with flame on the road surface, avoids damaging the road surface by direct fire, and is suitable for drying a wet road surface and ground, etc.SOLUTION: In a snow-melting system (10) for being equipped on the front end of a traveling-type work vehicle (2), the snow-melting system (10) is provided with a main body frame (11) coupled and supported on the front end part of a plurality of link members (3, 4) of the traveling-type work vehicle (2) so as to be able to move up and down and be inclined, flame generating means (20) for generating flame for use in melting snow, air blow means (30) for generating pressurized air to be blown on the road surface, and guide means (40) for guiding the flame generated by the flame generating means (20) and the pressurized air generated by the air blow means (30) to be sprayed in the approximately horizontal direction from the part in the vicinity of the front end at the lower part of the snow-melting system (10) toward the road surface downward.SELECTED DRAWING: Figure 4

Description

The present invention relates to a snow melting apparatus for mounting at the front end of a traveling work vehicle, and more particularly to a snow melting apparatus using a reflected flame and a pressurized air flow.

A traveling snow melting machine is connected to a front end of a plurality of link members (for example, a lift arm, a tilt link, etc.) of a traveling work vehicle (for example, a wheel loader, etc.) to perform snow melting with a snow melting device It is a thing.
As the above snow melting apparatus, there are known a direct fire type snow melting apparatus that performs snow melting with a direct fire flame as described in Patent Document 1 and an electric heat exchange type snow melting apparatus that performs snow melting by heat of an electric heater. However, since the electric heat exchange type snow melting apparatus is expensive, it is troublesome to supply power, and can not exhibit a sufficient amount of heat, it is not practical.

  The traveling type snow melting machine of Patent Document 1 has a snow melting device connected and supported at the front end of a lift arm of a wheel loader and a tilt link. This snow melting apparatus has a box-shaped casing with an open lower end, a plurality of burners, a plurality of fans, pipes, ducts, etc. at the upper end of the casing, and a large number of chains are suspended at the lower end of the outer peripheral wall of the casing. It is provided in a design, and melts snow by direct fire generated by a plurality of burners.

JP 2003-55929 A

When snow or ice is heated to melt, a water film of snow or ice melted is formed on the surface, the water film evaporates, the solid surface of snow or ice is exposed, and the solid surface is Snow melting is done by heating. It is not possible to melt snow efficiently unless the above-mentioned evaporation or removal of water proceeds rapidly.
Conventional direct snow melting systems only radiate flames of direct fire to snow and ice, so the surface is covered with a water film of water generated on the surface of snow and ice, and that water is mainly Since the method is to remove by evaporation, the efficiency of irradiating the flame on the solid surface of snow or ice is poor, and it is difficult to improve the snow melting efficiency.

  Furthermore, in the direct-fired snow melting apparatus, since asphalt on the road surface is directly heated by the flame, there is a problem that the road surface is damaged. In addition, since the conventional direct-fired snow melting apparatus only has a snow melting function, it has not been suitable for, for example, a task of rapidly drying a wet road surface, a ground, and the like.

  The object of the present invention is to improve snow melting performance by injecting a pressurized air flow to a road surface together with a flame in a snow melting apparatus, to prevent the road surface from being damaged by a direct fire, a wet road surface, a ground, etc. It is to be suitable for drying.

  The snow melting apparatus according to claim 1 is a snow melting apparatus for mounting on the front end of a traveling type work vehicle, comprising: a main frame which is supported by being connected to the front ends of a plurality of link members of the traveling type work vehicle; A flame generating means mounted on the main body frame to generate a flame to be used for snow melting; an air blowing means mounted on the main body frame to generate pressurized air to be blown to a road surface; a flame generated by the flame generating means A guide means for guiding pressurized air generated by the blower means to blow backward and downward toward the road surface from the vicinity of the front end of the lower part of the snow melting apparatus toward the road surface, the main body frame And a guide means mounted on the vehicle.

According to the above configuration, since the flame and the pressurized air are ejected from the vicinity of the front end of the lower part of the snow melting apparatus rearward and downward toward the road surface toward the road surface, snow and ice melt and occur. The snow melting performance can be enhanced because snow is melted while water is scattered by pressurized air flow, and a flame or air flow is constantly brought into contact with the fixed surface of snow or ice.
Moreover, since the road surface is heated by the pressurized air and the flame, and the road surface is not heated by the direct fire, damage to the road surface can be prevented. In the case of drying the road surface or the ground, it is possible to effectively dry by spraying only the flame and the pressurized air flow or the pressurized air.

In the snow melting apparatus according to claim 2, in the invention according to claim 1, the main body frame is provided with a heat blocking wall portion disposed in the middle portion of the main body frame, and a predetermined lower side of the heat blocking wall portion. The flame guide plate is disposed at an interval, and includes a flame guide plate which forms a horizontally oriented flame passage between the flame guide plate and the heat blocking wall portion.
According to the above configuration, since the flame passage is formed by the heat blocking wall at the middle step of the main body frame and the flame guide plate on the lower side thereof, heat from the flame is blocked by the heat blocking wall to It protects equipment installed on the top and can enhance durability.

According to a third aspect of the present invention, there is provided the snow melting apparatus according to the second aspect, wherein the flame generating means is disposed at the rear end of the flame passage so as to eject flame forward in the flame passage. These burners are characterized by being provided with combustion air supply means for supplying compressed air for combustion.
According to the above configuration, since the flame is ejected forward into the flame passage by the plurality of burners, the flame is changed into a forward flame by the guide means and ejected onto the road surface.
Reflective flames that are not open flames can be supplied to the road surface.

In the snow melting apparatus according to claim 4, in the invention according to claim 3, the blower means is a blower mounted on the main body frame, and a flat passage formed in the heat blocking wall portion with pressurized air generated by the blower. And an air guide passage leading to the front end side of the flame passage via
According to the above configuration, since the air guide passage for guiding the pressurized air to the front end side of the flame passage includes the passage formed in the heat blocking wall portion, the pressurized air is applied while cooling the heat blocking wall portion. It is possible to heat the pressurized air.

In the snow melting apparatus according to claim 5, in the invention according to claim 4, the guide means is disposed at the front end of the flame passage to reflect the flame in the flame passage downward, and the front end of the flame passage A curved guide plate disposed on the side and formed in a curved shape that shifts rearward as it goes downward, and that transforms the flame and the pressurized air rearward toward the road surface in a direction close to the horizontal direction; It is characterized by having.
According to the above configuration, it is possible to change the direction of the flame downward by the reflecting plate, and to change the direction of the flame and the pressurized air backward toward the road surface in a direction close to horizontal by the curved guide plate.

A snow melting apparatus according to claim 6 is characterized in that, in the invention according to claim 4, the burner is capable of adjusting the inclination angle in the form of forward and downward inclination, and the flame guide plate is detachably provided.
According to the above configuration, when melting a thick ice sheet or the like, the flame guide plate is removed, and the thermal power supplied to the road surface can be strengthened by increasing the inclination angle of the forward and downward of the burner.

  As described above, according to the present invention, various effects as described above can be obtained.

1 is a side view of a traveling snow melting machine equipped with a snow melting apparatus according to an embodiment of the present invention. It is a side view of a snow melting apparatus. It is the III-III sectional view taken on the line of FIG. It is an enlarged side view of a snow melting apparatus. It is the FIG. 4 equivalent view in the state which removed the flame guide plate and enlarged the inclination angle of the burner. It is the FIG. 3 equivalent view which concerns on a modification.

EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the snow melting apparatus for applying to the traveling snow melting machine which concerns on this invention is demonstrated based on drawing.
As shown in FIG. 1, a traveling snow melting machine 1 includes a wheel loader 2 which is a traveling work vehicle, and a pair of lift arms 3 and tilt links 4 (corresponding to a plurality of link members) of the wheel loader 2. A snow melting device 10 mounted at the front end, a fuel tank 5 containing light oil and kerosene mounted at the rear end portion of the wheel loader 2, a generator 6 and the like are provided.

  The snow melting apparatus 10 is connected to and supported by a pair of lift arms 3 and the front end of the tilt link 4 so as to be vertically movable and tiltable body frame 11 and a flame generation which is mounted on the body frame 11 and generates a flame for snow melting. The snow melting device 10 comprises a means 20, a blower 30 mounted on the main body frame 11 for generating pressurized air to be blown to the road surface, a flame generated by the flame generator 20 and a pressurized air generated by the blower 30. The guide means 40 for guiding so as to spout backward and downward from the lower front end portion of the lower part toward the road surface in a direction close to the horizontal direction, and provided with the guide means 40 mounted on the main body frame 11.

  As shown in FIGS. 2 to 4, the main body frame 11 includes an outer case 13 including a curved guide plate 12 of the guide means 40, and a middle step partition plate 14 which divides the middle step inside the outer case 13 up and down. A heat blocking wall portion 15 provided on the lower side of about 3/4 of the front side of the middle stage partition plate 14 and a flame guide plate 16 disposed below the heat blocking wall portion 15 at a predetermined interval in the vertical direction A flame guide plate 16 forming a horizontally oriented flame passage 17 between the heat blocking wall portion 15 and the flame guide plate 16 and a plurality of reinforcing bones 18 provided on the inner surface side of the outer case 13 are provided.

  The front end of the pair of lift arms 3 is connected to a pair of left and right brackets 7 fixed to the rear end of the outer case 13, and the tilt link 4 is fixed to the bracket 8 fixed to the rear end of the outer case 13. The front end portion of is connected via the connection link 4a.

  The snow melting device 10 can be raised and lowered by tilting the lift arm 3 with the hydraulic cylinder 3a. A midway portion in the length direction of the tilt link 4 is rotatably connected to the tip end portion of the support link 9, and a base end portion of the support link 9 is rotatably connected to the lift arm 3. The front end of the tilt link 4 is connected to the bracket 8 via a connection link 4a, and the rear end of the tilt link 4 is connected to the main body frame of the wheel loader 2 via a hydraulic cylinder 4b. The inclination angle of the snow melting device 10 with respect to the road surface can be adjusted by tilting it by 4b.

The flame guide plate 16 has a horizontal plate 16a facing the lower side of the heat blocking wall 15 with the flame passage 17 open, a plurality of longitudinal reinforcing ribs 16b fixed to the lower surface of the horizontal plate 16a, and a plurality of longitudinal plates. A curved plate 16c fixed to the upper half of the front end of the direction reinforcing rib 16b and a pair of left and right connecting plates 16d connecting the horizontal plate 16a to the heat blocking wall portion 15 are provided.
The rear ends of the plurality of longitudinal reinforcing ribs 16 b are bolted to the outer case 13 and the reinforcing bone 18 a, and the upper ends of the pair of connecting plates 16 d are bolted to the heat blocking wall portion 15. That is, the guide plate 16 is removably mounted via a bolted connection.

  Six pairs of burners 21 equipped so that the flame generating means 20 jets a flame forward toward the rear end of the flame passage 17, and a pair of blowers for supplying compressed air for combustion to these burners 21 22 (corresponding to combustion air supply means) and a blast passage 23 for introducing pressurized air supplied from a pair of blowers 22 and supplying the compressed air to six sets of burners 21. The pair of blowers 22 are fed from the generator 6.

  The air flow passage 23 is formed in a substantially trapezoidal cross section by the middle stage partition plate 14 and the curved passage formation plate 24. The pair of blowers 22 is a centrifugal blower and is provided at the rear of the equipment room 13 a above the middle stage partition plate 14 in the exterior case 13. A duct 25 extending from the discharge port of the pair of blowers 22 is connected to the air passage 23 through the middle stage partition plate 14.

The burner 21 is rotatably mounted on a grooved member 26 fixed to the lower surface of the heat blocking wall 15 at the rear end of the flame passage 17 by a pair of horizontal pivots 27.
The pressurized air in the blowing passage 23 flows into the flame passage 23 from the gap between the burners 21. A fuel supply pipe 28 to which light oil or kerosene pressurized by a pump is supplied from the fuel tank 5 is disposed in the air flow passage 23, and pressurized fuel supplied to the burner 21 from the fuel supply pipe 28 is misted from a nozzle. It injects in the shape of a circle, and it ignites by the ignition means which is not illustrated. The burner 21 is set to a forward horizontal position during normal snow melting, and operates a lever (not shown) at the time of high-output snow melting work to melt snow on ice or the like, as shown in FIG. It is set to the inclined posture, but its forward and downward inclination can be adjusted. In the present embodiment, a lever is connected to each burner 21 respectively.

A blower 31 installed in the main body frame 11; and a first flat passage 32a formed between the middle stage partition plate 14 and the heat blocking wall portion 15 with the pressurized air generated by the blower 31; An air guide passage 33 is provided which leads to the front end side of the flame passage 17 via the second flat passage 32 b formed in the heat blocking wall portion 15. The blower 31 is supplied with power from the generator 6.
The blower 31 is a centrifugal blower and is provided at the front of the device chamber 13a. The air guide passage 33 is formed at the front end of the middle stage partition plate 14, the first and second flat passages 32 a and 32 b, and the front end of the reflecting plate 41 described later and the front end of the flame passage 17. And a curved passage 35 in communication with the The pressurized air discharged from the blower 31 is supplied to the front end of the flame passage 17 through the air guide passage 33.

  The first flat passage 32a is formed between the middle stage partition plate 14 and the heat blocking wall portion 15, and the second flat passage portion 32b is formed in the heat blocking wall portion 15 in parallel with the first flat passage 32a. The rear end portion is communicated with the rear end of the first flat passage portion 32a. The middle stage partition plate 14 functions as a part of the heat blocking wall portion.

The guide means 40 is disposed at the front end of the flame passage 17 to reflect the flame of the flame passage 17 downward, and is disposed at the front end of the flame passage 17 and is curved downward as it goes downward. It has a curved guide plate 12 formed in the shape of a curved guide plate 12 for changing the direction of the flame and the pressurized air rearward toward the road surface in a direction close to the horizontal direction.
The reflecting plate 41 is composed of a curved plate 41a extending in the left-right direction and a plurality of rib plates 41b fixed to the front surface of the curved plate 41a.

Next, the operation and effect of the snow melting apparatus 10 described above will be described.
When performing a normal snow melting operation for melting snow or small ice blocks accumulated on the road surface, the burner 21 and the flame guide plate 16 are held in a substantially horizontal posture as shown in FIG. 2 and FIG. .
In this case, the flame generating means 20 and the air blowing means 30 are operated to eject the flame generated by the flame generating means 20 to the flame passage 17 and the pressurized air generated by the air blowing means 30 from the air guiding passage 23 to the flame path. The snow and snow are supplied to the front end portion of the snow melting device 10, and the flame and the compressed air are ejected from the vicinity of the front end of the lower portion of the snow melting device 10 by the curved guide plate 12 backward and downward in the horizontal direction toward the road surface. Do.

In order to cause the pressurized air stream to jet backward toward the road surface and close to the horizontal direction together with the flame, the water film generated on the surface of the snow melts while being scattered quickly without staying on the surface of the snow or ice,
Since the flame and high temperature air always contact with snow and ice, snow melting performance can be enhanced.
Since the flame is reflected by the reflection plate 41 and turned downward and then jetted toward the road surface, the road surface is not heated by a direct fire and therefore the road surface is not damaged.
In the case of drying the road surface and the ground, it is possible to effectively dry by spraying only the flame and the pressurized air flow or the pressurized air.

By supplying pressurized air to the first and second flat passages 32a and 32b to cool the heat blocking wall portion 15, devices such as the blowers 22 and 31 disposed in the device chamber 13a are protected and the durability is lowered. It can prevent. Since the pressurized air can be preheated by flowing the pressurized air into the first and second flat passages 32a and 32b, the heat utilization efficiency can be enhanced.
Next, at the time of high output snow melting work to melt thick ice sheets etc., as shown in FIG. 5, the flame guide plate 16 is removed and the inclination angle of the forward and downward of the burner 21 is increased to strengthen the thermal power supplied to the road surface. can do.

Next, an example in which the embodiment is partially changed will be described.
1) The number of blowers 22 and 31 is not limited to that of the embodiment, and can be changed as appropriate.
2) Although the burner 21 forms a spray by pressurized fuel, it is not limited to this and may be a burner of a type forming a spray by pressurized air.

3) As shown in FIG. 6, in the snow melting apparatus 10A, shaft members 45 for pivotally supporting the six burners 21 are connected and integrated, and the operation lever 46 is mounted on the end side portion or the center side portion of the shaft member 45. The tilt angle of the burner 21 may be changed by rotating the shaft member 45 by operating the operation lever 46.

4) A traveling working vehicle other than a wheel loader is also applicable as the traveling working vehicle. 5) In addition, those skilled in the art can implement various modifications in the above embodiment without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 travel type snow melting machine 2 travel type work vehicle 3 lift arm 4 tilt link 10, 10 A snow melting device 11 main body frame 12 curved guide plate 14 middle stage partition plate 15 heat blocking wall portion 16 flame guide plate 17 flame passage 20 flame passage 20 flame generating means 21 burner 22 Blower (combustion air supply means)
Reference Signs List 30 blower means 31 blowers 32a, 32b first and second flat passages 33 air guide passage 40 guide means 41 reflection plate

  The present invention relates to a snow melting apparatus for mounting at the front end of a traveling work vehicle, and more particularly to a snow melting apparatus using a reflected flame and a pressurized air flow.

A traveling snow melting machine is connected to a front end of a plurality of link members (for example, a lift arm, a tilt link, etc.) of a traveling work vehicle (for example, a wheel loader, etc.) to perform snow melting with a snow melting device It is a thing.
As the above snow melting apparatus, there are known a direct fire type snow melting apparatus that performs snow melting with a direct fire flame as described in Patent Document 1 and an electric heat exchange type snow melting apparatus that performs snow melting by heat of an electric heater. However, since the electric heat exchange type snow melting apparatus is expensive, it is troublesome to supply power, and can not exhibit a sufficient amount of heat, it is not practical.

  The traveling type snow melting machine of Patent Document 1 has a snow melting device connected and supported at the front end of a lift arm of a wheel loader and a tilt link. This snow melting apparatus has a box-shaped casing with an open lower end, a plurality of burners, a plurality of fans, pipes, ducts, etc. at the upper end of the casing, and a large number of chains are suspended at the lower end of the outer peripheral wall of the casing. It is provided in a design, and melts snow by direct fire generated by a plurality of burners.

JP 2003-55929 A

When snow or ice is heated to melt, a water film of snow or ice melted is formed on the surface, the water film evaporates, the solid surface of snow or ice is exposed, and the solid surface is Snow melting is done by heating. It is not possible to melt snow efficiently unless the above-mentioned evaporation or removal of water proceeds rapidly.
Conventional direct snow melting systems only radiate flames of direct fire to snow and ice, so the surface is covered with a water film of water generated on the surface of snow and ice, and that water is mainly Since the method is to remove by evaporation, the efficiency of irradiating the flame on the solid surface of snow or ice is poor, and it is difficult to improve the snow melting efficiency.

  Furthermore, in the direct-fired snow melting apparatus, since asphalt on the road surface is directly heated by the flame, there is a problem that the road surface is damaged. In addition, since the conventional direct-fired snow melting apparatus only has a snow melting function, it has not been suitable for, for example, a task of rapidly drying a wet road surface, a ground, and the like.

  The object of the present invention is to improve snow melting performance by injecting a pressurized air flow to a road surface together with a flame in a snow melting apparatus, to prevent the road surface from being damaged by a direct fire, a wet road surface, a ground, etc. It is to be suitable for drying.

The snow melting apparatus according to claim 1 is a snow melting apparatus for mounting on the front end of a traveling type work vehicle, comprising: a main frame which is supported by being connected to the front ends of a plurality of link members of the traveling type work vehicle; A flame generating means mounted on the main body frame to generate a flame to be used for snow melting; an air blowing means mounted on the main body frame to generate pressurized air to be blown to a road surface; a flame generated by the flame generating means A guide means for guiding pressurized air generated by the blower means to blow backward and downward toward the road surface from the vicinity of the front end of the lower part of the snow melting apparatus toward the road surface, the main body frame a equipped with guide means, the body frame includes a heat shielding wall portion disposed in the middle portion of the body frame, Oh predetermined intervals in the vertical direction on the lower side of the heat shield wall And a flame guide plate which forms a horizontally oriented flame path between the flame guide plate and the heat blocking wall portion, and the flame generating means includes a flame at a rear end portion of the flame path. A plurality of burners disposed so as to eject a flame in a forward direction into the passage, and a combustion air supply means for supplying compressed air for combustion to the burners are characterized.

According to the above configuration, since the flame and the pressurized air are ejected from the vicinity of the front end of the lower part of the snow melting apparatus rearward and downward toward the road surface toward the road surface, snow and ice melt and occur. The snow melting performance can be enhanced because snow is melted while water is scattered by pressurized air flow, and a flame or air flow is constantly brought into contact with the fixed surface of snow or ice.
Moreover, since the road surface is heated by the pressurized air and the flame, and the road surface is not heated by the direct fire, damage to the road surface can be prevented. In the case of drying the road surface or the ground, it is possible to effectively dry by spraying only the flame and the pressurized air flow or the pressurized air.

And in order to form a flame passage with the heat blocking wall in the middle of the main frame and the flame guide plate on the lower side, the heat blocking wall cuts off the heat from the flame and equips the upper part of the main frame Protect and enhance durability.

Furthermore, since the flame is jetted forward into the flame path with a plurality of burners, the flame is changed into a forward flame by the guide means and jetted onto the road surface, so that the reflection is not a direct fire flame. The flame can be supplied to the road surface.

In the snow melting apparatus according to claim 2 , in the invention according to claim 1 , the blower means is a blower mounted on the main body frame, and a flat passage formed in the heat blocking wall portion with pressurized air generated by the blower. And an air guide passage leading to the front end side of the flame passage via
According to the above configuration, since the air guide passage for guiding the pressurized air to the front end side of the flame passage includes the passage formed in the heat blocking wall portion, the pressurized air is applied while cooling the heat blocking wall portion. It is possible to heat the pressurized air.

In the snow melting apparatus according to claim 3 , in the invention according to claim 1 , the guide means is disposed at the front end of the flame passage to reflect the flame in the flame passage downward, and the front end of the flame passage A curved guide plate disposed on the side and formed in a curved shape that shifts rearward as it goes downward, and that transforms the flame and the pressurized air rearward toward the road surface in a direction close to the horizontal direction; It is characterized by having.
According to the above configuration, it is possible to change the direction of the flame downward by the reflecting plate, and to change the direction of the flame and the pressurized air backward toward the road surface in a direction close to horizontal by the curved guide plate.

A snow melting apparatus according to claim 4 is characterized in that, in the invention according to claim 1 , the burner is capable of adjusting the inclination angle in the form of forward and downward inclination, and the flame guide plate is detachably provided.
According to the above configuration, when melting a thick ice sheet or the like, the flame guide plate is removed, and the thermal power supplied to the road surface can be strengthened by increasing the inclination angle of the forward and downward of the burner.

  As described above, according to the present invention, various effects as described above can be obtained.

1 is a side view of a traveling snow melting machine equipped with a snow melting apparatus according to an embodiment of the present invention. It is a side view of a snow melting apparatus. It is the III-III sectional view taken on the line of FIG. It is an enlarged side view of a snow melting apparatus. It is the FIG. 4 equivalent view in the state which removed the flame guide plate and enlarged the inclination angle of the burner. It is the FIG. 3 equivalent view which concerns on a modification.

EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the snow melting apparatus for applying to the traveling snow melting machine which concerns on this invention is demonstrated based on drawing.
As shown in FIG. 1, a traveling snow melting machine 1 includes a wheel loader 2 which is a traveling work vehicle, and a pair of lift arms 3 and tilt links 4 (corresponding to a plurality of link members) of the wheel loader 2. A snow melting device 10 mounted at the front end, a fuel tank 5 containing light oil and kerosene mounted at the rear end portion of the wheel loader 2, a generator 6 and the like are provided.

  The snow melting apparatus 10 is connected to and supported by a pair of lift arms 3 and the front end of the tilt link 4 so as to be vertically movable and tiltable body frame 11 and a flame generation which is mounted on the body frame 11 and generates a flame for snow melting. The snow melting device 10 comprises a means 20, a blower 30 mounted on the main body frame 11 for generating pressurized air to be blown to the road surface, a flame generated by the flame generator 20 and a pressurized air generated by the blower 30. The guide means 40 for guiding so as to spout backward and downward from the lower front end portion of the lower part toward the road surface in a direction close to the horizontal direction, and provided with the guide means 40 mounted on the main body frame 11.

  As shown in FIGS. 2 to 4, the main body frame 11 includes an outer case 13 including a curved guide plate 12 of the guide means 40, and a middle step partition plate 14 which divides the middle step inside the outer case 13 up and down. A heat blocking wall portion 15 provided on the lower side of about 3/4 of the front side of the middle stage partition plate 14 and a flame guide plate 16 disposed below the heat blocking wall portion 15 at a predetermined interval in the vertical direction A flame guide plate 16 forming a horizontally oriented flame passage 17 between the heat blocking wall portion 15 and the flame guide plate 16 and a plurality of reinforcing bones 18 provided on the inner surface side of the outer case 13 are provided.

  The front end of the pair of lift arms 3 is connected to a pair of left and right brackets 7 fixed to the rear end of the outer case 13, and the tilt link 4 is fixed to the bracket 8 fixed to the rear end of the outer case 13. The front end portion of is connected via the connection link 4a.

  The snow melting device 10 can be raised and lowered by tilting the lift arm 3 with the hydraulic cylinder 3a. A midway portion in the length direction of the tilt link 4 is rotatably connected to the tip end portion of the support link 9, and a base end portion of the support link 9 is rotatably connected to the lift arm 3. The front end of the tilt link 4 is connected to the bracket 8 via a connection link 4a, and the rear end of the tilt link 4 is connected to the main body frame of the wheel loader 2 via a hydraulic cylinder 4b. The inclination angle of the snow melting device 10 with respect to the road surface can be adjusted by tilting it by 4b.

The flame guide plate 16 has a horizontal plate 16a facing the lower side of the heat blocking wall 15 with the flame passage 17 open, a plurality of longitudinal reinforcing ribs 16b fixed to the lower surface of the horizontal plate 16a, and a plurality of longitudinal plates. A curved plate 16c fixed to the upper half of the front end of the direction reinforcing rib 16b and a pair of left and right connecting plates 16d connecting the horizontal plate 16a to the heat blocking wall portion 15 are provided.
The rear ends of the plurality of longitudinal reinforcing ribs 16 b are bolted to the outer case 13 and the reinforcing bone 18 a, and the upper ends of the pair of connecting plates 16 d are bolted to the heat blocking wall portion 15. That is, the guide plate 16 is removably mounted via a bolted connection.

  Six pairs of burners 21 equipped so that the flame generating means 20 jets a flame forward toward the rear end of the flame passage 17, and a pair of blowers for supplying compressed air for combustion to these burners 21 22 (corresponding to combustion air supply means) and a blast passage 23 for introducing pressurized air supplied from a pair of blowers 22 and supplying the compressed air to six sets of burners 21. The pair of blowers 22 are fed from the generator 6.

  The air flow passage 23 is formed in a substantially trapezoidal cross section by the middle stage partition plate 14 and the curved passage formation plate 24. The pair of blowers 22 is a centrifugal blower and is provided at the rear of the equipment room 13 a above the middle stage partition plate 14 in the exterior case 13. A duct 25 extending from the discharge port of the pair of blowers 22 is connected to the air passage 23 through the middle stage partition plate 14.

The burner 21 is rotatably mounted on a grooved member 26 fixed to the lower surface of the heat blocking wall 15 at the rear end of the flame passage 17 by a pair of horizontal pivots 27.
The pressurized air in the blowing passage 23 flows into the flame passage 23 from the gap between the burners 21. A fuel supply pipe 28 to which light oil or kerosene pressurized by a pump is supplied from the fuel tank 5 is disposed in the air flow passage 23, and pressurized fuel supplied to the burner 21 from the fuel supply pipe 28 is misted from a nozzle. It injects in the shape of a circle, and it ignites by the ignition means which is not illustrated. The burner 21 is set to a forward horizontal position during normal snow melting, and operates a lever (not shown) at the time of high-output snow melting work to melt snow on ice or the like, as shown in FIG. It is set to the inclined posture, but its forward and downward inclination can be adjusted. In the present embodiment, a lever is connected to each burner 21 respectively.

A blower 31 installed in the main body frame 11; and a first flat passage 32a formed between the middle stage partition plate 14 and the heat blocking wall portion 15 with the pressurized air generated by the blower 31; An air guide passage 33 is provided which leads to the front end side of the flame passage 17 via the second flat passage 32 b formed in the heat blocking wall portion 15. The blower 31 is supplied with power from the generator 6.
The blower 31 is a centrifugal blower and is provided at the front of the device chamber 13a. The air guide passage 33 is formed at the front end of the middle stage partition plate 14, the first and second flat passages 32 a and 32 b, and the front end of the reflecting plate 41 described later and the front end of the flame passage 17. And a curved passage 35 in communication with the The pressurized air discharged from the blower 31 is supplied to the front end of the flame passage 17 through the air guide passage 33.

  The first flat passage 32a is formed between the middle stage partition plate 14 and the heat blocking wall portion 15, and the second flat passage portion 32b is formed in the heat blocking wall portion 15 in parallel with the first flat passage 32a. The rear end portion is communicated with the rear end of the first flat passage portion 32a. The middle stage partition plate 14 functions as a part of the heat blocking wall portion.

The guide means 40 is disposed at the front end of the flame passage 17 to reflect the flame of the flame passage 17 downward, and is disposed at the front end of the flame passage 17 and is curved downward as it goes downward. It has a curved guide plate 12 formed in the shape of a curved guide plate 12 for changing the direction of the flame and the pressurized air rearward toward the road surface in a direction close to the horizontal direction.
The reflecting plate 41 is composed of a curved plate 41a extending in the left-right direction and a plurality of rib plates 41b fixed to the front surface of the curved plate 41a.

Next, the operation and effect of the snow melting apparatus 10 described above will be described.
When performing a normal snow melting operation for melting snow or small ice blocks accumulated on the road surface, the burner 21 and the flame guide plate 16 are held in a substantially horizontal posture as shown in FIG. 2 and FIG. .
In this case, the flame generating means 20 and the air blowing means 30 are operated to eject the flame generated by the flame generating means 20 to the flame passage 17 and the pressurized air generated by the air blowing means 30 from the air guiding passage 23 to the flame path. The snow and snow are supplied to the front end portion of the snow melting device 10, and the flame and the compressed air are ejected from the vicinity of the front end of the lower portion of the snow melting device 10 by the curved guide plate 12 backward and downward in the horizontal direction toward the road surface. Do.

In order to cause the pressurized air stream to jet backward toward the road surface and close to the horizontal direction together with the flame, the water film generated on the surface of the snow melts while being scattered quickly without staying on the surface of the snow or ice,
Since the flame and high temperature air always contact with snow and ice, snow melting performance can be enhanced.
Since the flame is reflected by the reflection plate 41 and turned downward and then jetted toward the road surface, the road surface is not heated by a direct fire and therefore the road surface is not damaged.
In the case of drying the road surface and the ground, it is possible to effectively dry by spraying only the flame and the pressurized air flow or the pressurized air.

By supplying pressurized air to the first and second flat passages 32a and 32b to cool the heat blocking wall portion 15, devices such as the blowers 22 and 31 disposed in the device chamber 13a are protected and the durability is lowered. It can prevent. Since the pressurized air can be preheated by flowing the pressurized air into the first and second flat passages 32a and 32b, the heat utilization efficiency can be enhanced.
Next, at the time of high output snow melting work to melt thick ice sheets etc., as shown in FIG. 5, the flame guide plate 16 is removed and the inclination angle of the forward and downward of the burner 21 is increased to strengthen the thermal power supplied to the road surface. can do.

Next, an example in which the embodiment is partially changed will be described.
1) The number of blowers 22 and 31 is not limited to that of the embodiment, and can be changed as appropriate.
2) Although the burner 21 forms a spray by pressurized fuel, it is not limited to this and may be a burner of a type forming a spray by pressurized air.

3) As shown in FIG. 6, in the snow melting apparatus 10A, shaft members 45 for pivotally supporting the six burners 21 are connected and integrated, and the operation lever 46 is mounted on the end side portion or the center side portion of the shaft member 45. The tilt angle of the burner 21 may be changed by rotating the shaft member 45 by operating the operation lever 46.

4) A traveling working vehicle other than a wheel loader is also applicable as the traveling working vehicle. 5) In addition, those skilled in the art can implement various modifications in the above embodiment without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 travel type snow melting machine 2 travel type work vehicle 3 lift arm 4 tilt link 10, 10 A snow melting device 11 main body frame 12 curved guide plate 14 middle stage partition plate 15 heat blocking wall portion 16 flame guide plate 17 flame passage 20 flame passage 20 flame generating means 21 burner 22 Blower (combustion air supply means)
Reference Signs List 30 blower means 31 blowers 32a, 32b first and second flat passages 33 air guide passage 40 guide means 41 reflection plate

Claims (6)

In a snow melting apparatus for mounting on the front end of a traveling work vehicle,
A vertically movable and tiltable body frame connected to and supported by front ends of a plurality of link members of the traveling work vehicle;
Flame generating means mounted on the body frame to generate a flame to be used for snow melting;
A blower which is mounted on the body frame and generates pressurized air to be blown to the road surface;
The flame generated by the flame generating means and the pressurized air generated by the air blowing means are guided so as to spout backward and downward toward the road surface from the vicinity of the front end of the lower part of the snow melting apparatus in a nearly horizontal direction. A snow melting apparatus comprising: guide means, and the guide means mounted on the main body frame.   The main body frame is a heat blocking wall portion disposed in the middle step portion of the main body frame, and a flame guide plate disposed at a predetermined distance in the vertical direction below the heat blocking wall portion, the heat 2. A snow melting apparatus according to claim 1, further comprising: a flame guide plate which forms a horizontally oriented flame passage between itself and the blocking wall.   A plurality of burners arranged so that the flame generating means ejects a flame forward into the flame passage at a rear end of the flame passage, and a combustion air supply means for supplying compressed air for combustion to the burners The snow melting apparatus according to claim 2, comprising:   The air blowing means includes a fan mounted on the main body frame, and an air guiding path for guiding pressurized air generated by the fan to the front end side of the flame path via a flat path formed in the heat blocking wall portion; The snow melting apparatus according to claim 3, comprising:   The guide means is disposed at the front end of the flame passage to form a reflecting plate for changing the flame of the flame passage downward, and the curved plate is provided at the front end of the flame passage and moves rearward as it goes downward. 5. The snow melt as set forth in claim 4, further comprising: a curved guide plate formed, the curved guide plate for changing the direction of the flame and the pressurized air rearward toward the road surface in a direction close to a horizontal direction. apparatus.   5. The snow melting apparatus according to claim 4, wherein the burner has an adjustable forward and downward inclination angle, and the flame guide plate is detachably provided.