JP6501101B2 - Road snow melting system equipped with fork lift using engine waste heat - Google Patents

Description

  The present invention relates to a road snow melting device equipped with a fork lift using engine waste heat, which uses the waste heat of the engine of a vehicle and is used to melt snow on a road within a business establishment.

  Although it is difficult to remove snow from the fork lift aisle in the premises of the northern country, the snow melts and becomes water when it drains and drains into the drainage groove without taking much more time, and the heat necessary for melting is the engine It is an ideal road cleaning system free of charge because it is waste heat. Furthermore, because forklifts frequently return waste heat to the road surface because it frequently reciprocates a fixed road, it is convenient for snow melting, but it is mounted on a vehicle that has been put to practical use There is no type of road snow melting device.

  Even if snow is removed like a bulldozer by attaching a snow removal board to the fork lift, the snow must be transported somewhere to secure a space and left as a snow mountain. It is the present condition to struggle with

Patent No. 3876427 Japanese Patent Application No. 2014-168339

  Although the problem to be solved is embodied as a snow melting sled in Patent Document 1, damage to the bottom occurs in the sled. Snow continues to exist in the ski area, but snow melting sled melts the snow on the road and there is no snow, so the bottom of the sled is in direct contact with the road surface and damage to the bottom of the sled occurs, resulting in no durability. It is an object of the present invention to provide a device having flexibility.

  In the present invention, a drum having hot water inside, a driving wheel for rotating the drum, an axis of the drum having a hollow pipe passing therethrough, and a hollow at the same time of water leakage from the hollow axis Detection unit that detects the accumulation of air that passes into the drum and enters the drum, or detects a drop in the water level in the drum, and sends a signal from the detection unit to refuel water The snow melting device consists of a device and a piping circuit that pumps hot water heated by the heat of the engine coolant through a built-in heat exchanger, sends it to the drum, collects it and collects it and circulates it. A fork lift mounted road snow melting device utilizing engine waste heat characterized in that it is mounted on the bottom of the lift and the drum is grounded as the fork lift travels to melt snow on the road surface.

  According to such a configuration, in a low speed vehicle such as a fork lift, it is noted that the use of the drum does not affect the work traveling even if it is used. A warm and heated drum is continuously grounded to the aisle by traveling of a vehicle equipped with this device, and snow is melted by the heat capacity of the drum itself, so that the sled is inferior in durability due to damage to the bottom surface There is an effect that it is possible to perform snow melting on the road by a durable device without doing so.

  According to the present invention, the hot water heated by the heat exchanger using engine waste heat is circulated in the water bath provided in the drum, and the heated drum is rotated to be grounded on the road surface and the snow on the passage is Melt The hot water is circulated and heated by a pump built in a piping circuit that circulates the hot water and a heat exchanger using engine waste heat. By these, there is an advantage of melting snow on the road surface reliably without using a sled having poor durability due to damage to the bottom.

  It is necessary to remove snowfall with a bulldozer etc. as before when starting work, but as mentioned above snowfall at work in the daytime is melted away by this snow melting apparatus, so snow removal labor and cost reduction and fork during snow removal work There is an advantage that the loss of lift operation stop is eliminated.

  For example, 24 cm of snowfall per day is only 0.17 mm in one minute. For example, if the operation interval of the fork lift is 5 minutes, the snow of 0.85 mm may be melted at each traveling. For example, if traveling on a ski resort, a large amount of snow will adhere to the endless track and the water tank will soon be filled with snow, but the present invention has the advantage that such a situation does not occur.

  Because the bottom of the board directly contacts the road surface to use the soil (snow) board to treat the snow of about 1 mm per run of the fork lift, damage to the board and the road surface is avoided. Since it is inferior in durability, it has the advantage of reliably melting the snow on the road surface without using a dirt (snow) board which is inferior in durability.

  In addition to the direct effect of melting the snow and removing it from the road surface, there is an advantage that, unlike the mechanical snow removal, the time for securing the snow dump and the time for transporting the snow there is reduced.

 In addition, when snow is compressed with tires, it becomes an ice plate from compressed snow, which has the advantage that sherbet snow, which has some difficulty in removing it, has little effort in removing it.

  With this device mounted on the bottom of the body of the fork lift, the snow on the aisle is automatically melted while working on the fork lift as usual, so the melted snow flows into the drain as well as the rain, and the work is deliberate There is an advantage that it is not necessary to temporarily remove snow from the passage, and it is not necessary to lower the working efficiency just because the snow has fallen.

FIG. 1 is an explanatory view of a road lift apparatus equipped with a fork lift using engine waste heat and using the drum of claim 1; Example 1

  Instead of adopting parts whose bottom is damaged by friction with the road surface like snow melting sleds, a drum is adopted that prevents damage due to friction by being given the same ground traveling speed as the traveling speed of the vehicle equipped with this device. By designing a heat transfer method that transfers engine waste heat without waste, we realized a vehicle-mounted road snow melting method that uses engine waste heat free of charge.

 In the first embodiment, a drum is used as the snow melting part, and it is rotated in synchronization with the traveling of the fork lift and grounded. Prepare a piping circuit that circulates hot water that is heated and pumped by the heat of the engine coolant through the built-in heat exchanger. Hot water is fed to the drum from the hot water supply end of the piping circuit which penetrates the hollow shaft of the previous drum, and hot water is taken out from the drum from the recovery end located opposite to the hot water supply end. At the same time as water leaks from the hollow shaft, air penetrates the hollow shaft from the outside to form an air pool in the drum, and the water level in the drum drops, so air is drawn in from the previous collection end. A detection unit is provided to detect air bubbles flowing in the piping circuit or to detect a drop in water level. The water level in the drum is kept constant by operating the water rehydration device according to the signal sent from the detection unit. The drum heated by the hot water circulating in the previous piping circuit is rotated by the driving wheel and grounded to melt the snow on the road surface. This snow melting device is attached to the bottom of the fork lift to melt snow on the road surface as the fork lift travels.

  FIG. 1 is a cross-sectional view of an embodiment of the apparatus according to the present invention, showing the hot water supply end of 12 piping circuits for passing hot water as a heat transfer medium into the hollow shaft of the rotating 10 drums. The hot water heated by the engine waste heat is supplied from the hot water supply end of the 12 piping circuit to the inside of the 6 drum through the 5 heat exchangers. The interior of the drum 6 is hollow and forms a closed bath. Hot water in drum 6 melts snow on 13 roads on 14 road surfaces and hot water cools, and cold water is collected on the end of 16 piping circuits installed on the opposite side of hot water supply side of 6 drums Return to the piping circuit of 9 to circulate the pump-driven hot water of 4 via the part.

 Further, the hot water in the hot water tank in the drum 6 is heated by heat of the engine coolant by the heat exchanger 5.

  Between the heated 6 drums and the 13 snowfall, a snow film is always formed. This is the same principle as skates, with a low coefficient of friction. Therefore, if the drum is not rotated, the drum slides on the snow surface, and the ground contact surface of the drum is fixed. In this case, since the snow melting ability of the drum is lowered, the drum 6 is rotated to prevent this.

  Also, by driving the 17 drive wheels so that the ground traveling speed of the 6 drums matches that of the vehicle, slippage between the 6 drums and the 14 road surfaces is eliminated and the 6 drums are prevented from being worn out.

Even if the watertight seal of 11 is provided from the hollow shaft of the 10 drum (although the watertight seal of 18 is the same) leakage of hot water occurs and the amount of hot water in the drum of 6 decreases. As the hot water leaks from the watertight seal of 11, the external air enters the back of the watertight seal of 11 and enters the air reservoir in the upper part of the 7 drum. Since the air continues to stay in the air reservoir at the top of the drum 7 even if the drum 6 rotates, the air collected from the recovery end of the piping circuit of 16 independent of the drum in the drum 6 is sucked. Here, air inhaled air is detected as air bubbles detected in 3 and installed in 9 piping circuits as a water refueling device for refueling water in the drum so that the amount of hot water in the drum is kept constant upon receiving a signal from the detection unit When the rehydration device detects air bubbles, water is replenished from one spare water tank via two pipes. When the water is replenished, the amount of hot water in the drum 6 increases, the air in the air reservoir at the top of the drum 7 decreases, and the surface of the hot water 8 becomes higher than the recovery end of the 16 piping circuit, and the 16 piping circuit 7 air is not sucked from the recovery end, and the air in the piping circuit of 9 disappears, so this is detected by the air bubble detection and water replenishment device of 3 and the amount of hot water in the drum of 6 is fixed by stopping water replenishment. Be kept Air bubbles in the piping circuit are discharged from the air bubbles in 3 and the air vent in the water rehydration device.

  Instead of the air bubble detection of 3, a water level detection unit of 15 that detects the surface level of the hot water in the drum of 8 may be adopted. In this case, the water replenishment control device 3 performs water replenishment based on the signal sent from the water level detection unit 15.

  Since the hot water leaking from the hollow shaft of 10 falls on the surface of 14 and melts the snow of 13, it does not cause heat loss in practice.

  With this device mounted on the bottom of the body of the fork lift, the snow on the aisle surface is automatically melted while working on the fork lift as usual, so the melted snow flows away into the drainage gutter as well as rain, It is not necessary to suspend work and remove snow from the passage, and it is not necessary to reduce work efficiency just because snow has fallen.

DESCRIPTION OF SYMBOLS 1 Spare water tank 2 Piping from a spare water tank 3 Air bubble detection and rehydration control device 4 Pump 5 Heat exchanger 6 Drum 7 Reservoir of air generated inside drum 8 Water surface in drum 9 Piping circuit 10 Hollow shaft of drum 11 Watertight Seal 12 The hot water supply end of the piping circuit passing through the hollow shaft of the drum 10 10 Snow on the road 14 Road surface 15 8 Water level detection unit detecting the surface level of the hot water in the drum Collection end of the piping circuit to be driven 17 Drive wheel 18 Watertight seal

Claims (1)

A drum having a hot water inside, a driving wheel for rotating the drum, an axis of the drum having a hollow pipe passing therethrough, a leak of water from the hollow axis and a passage of the hollow axis at the same time Detection unit that detects the accumulation of air entering the drum or detects a drop in the water level in the drum and outputs a signal, and the signal from the detection unit makes the amount of hot water in the drum constant A water rehydration device for rehydration in the drum so as to be maintained, and a pump that pumps hot water heated by heat of the engine coolant through a built-in heat exchanger and feeds it to the drum or collects it for circulation. A fork utilizing engine waste heat characterized in that a circuit and a snow melting device consisting of a circuit and a snow melting device are mounted on the bottom of the fork lift and the drum is grounded while the fork lift travels to melt snow on the road surface. Snow melting apparatus of the shift mounting.

Images