JP2007307464A - Recycle machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recycle machine capable of discharging dust, etc. adhered to the dust protective net of a heat exchanger without manual work. <P>SOLUTION: The power mechanism 4 of the recycle machine consists of a cooling fan 23 sucking outside air into an engine chamber 4b in which a power engine 13 is housed, so as to cool a heat exchanger 15 arranged in the engine chamber 4b, a dust protective net 17 arranged in the heat exchanger and removing dust etc. sucked together with outside air, a discharge outlet 18 opened below the dust protective net and a lid body 20 arranged in the discharge outlet in a freely openable and closable way so as to be opened on rising of the air pressure in the engine chamber. Because dust etc. having fallen from the dust protective net is discharged automatically from the discharge outlet below the engine chamber when the lid body of the discharge outlet is opened, the recycle machine reduces time and effort for periodical cleaning of the dust protective net by an air pressure, leading to improved maintenance performance. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a recycling machine that can discharge dust and the like deposited on a dust-proof net provided in a heat exchanger such as a radiator without requiring a manual operation.

Conventionally, a lot of waste such as concrete blocks and asphalt blocks is generated at the site of demolition of buildings and repair work sites of asphalt roads.
Since these wastes can be reused (recycled), recently, for example, the recycling machine described in Patent Document 1 or the like has been moved to a demolition site such as a building or a repair site of an asphalt road. To recycle waste as a recycling resource.
The recycling machine described in Patent Document 1 includes a hopper that inputs a material to be crushed such as waste, a crushing device that crushes the material to be crushed, and a crushing device. And a carry-out conveyor for carrying out the processed recycled resources.
In the recycling machine having the above-described configuration, crushing means driven by an engine is installed in the crushing device, and a large amount of dust may be generated and scattered around when crushing the object to be crushed by the crushing means.

On the other hand, a water-cooled engine is often used as an engine mounted on a recycling machine, and a hydraulic pump or the like is driven by the engine to generate hydraulic pressure for driving the crushing means. A heat exchanger such as a radiator that dissipates heat from the engine coolant and an oil cooler that cools hydraulic oil is installed in the vicinity.
These heat exchangers are cooled by a cooling fan that is rotationally driven by an engine or an electric motor. When the heat exchanger is cooled by the cooling fan, dust generated by the crushing means is blown to the heat exchanger together with cooling air. Therefore, there is a problem that dust adheres to the heat radiation fins of the heat exchanger and the heat radiation effect is lowered.
For this reason, in the past, the work of periodically removing dust accumulated on the heat radiation fins has been carried out, but these work are complicated and often forgotten, resulting in problems such as overheating of the engine. It has occurred.

On the other hand, Patent Document 2 proposes a tractor dust discharging structure in which a dust-proof net is provided on the entire surface of the radiator to prevent dust from adhering to the radiator and the dust adhering to the dust-proof net can be easily treated. .
In the dust discharge structure described in Patent Document 2, a shielding plate that receives dust falling from a dust net is provided at the front lower portion of the radiator.
This shielding plate is held in a horizontal position by a posture change support means comprising a coil spring. When discharging dust accumulated on the shielding plate, the shielding plate is dropped by hooking a finger on the annular portion of the coil. It can be discharged to the outside of the bonnet by changing to the posture position.
JP 2002-331252 A JP 7-228160 A

However, when the dust discharge structure described in Patent Document 2 is applied to a recycling machine, there are the following problems.
In other words, as mentioned above, since recycling machines are often operated continuously for a long time in an environment where a large amount of dust is generated, a large amount of dust is deposited on the heat exchanger. When the engine is stopped and the cooling fan stops rotating, it falls to the bottom of the heat exchanger and accumulates below the heat exchanger.
For this reason, as in the dust discharge structure described in the cited document 2, dust that has fallen with the engine stopped is deposited on a shielding plate provided at the front lower part of the heat exchanger, and this is periodically discharged manually. When the engine is restarted, the dust accumulated on the shielding plate rises again and adheres to the dust screen, which reduces the heat dissipation effect of the heat exchanger and causes the engine to overheat. Or the temperature of the hydraulic oil rises abnormally and the hydraulic oil deteriorates early.

In addition, since the dust on the shielding plate must be exhausted by manipulating the shielding plate, the maintenance work is complicated, and if the discharge work is neglected, the engine may be overheated during the crushing work of the object to be crushed In some cases, the work must be interrupted or stopped, and there is a problem that the work efficiency is lowered.
The present invention has been made to remedy such a problem, and an object thereof is to provide a recycling machine that can discharge dust and the like adhering to a dust-proof net of a heat exchanger without requiring a man-made work. It is.

  The recycling machine of the present invention is a self-propelled traveling body, a crushing means installed on the traveling body, a carrying-in means for carrying a material to be crushed into the crushing means, and a material to be crushed by the crushing means are carried out. A recycle machine comprising: a carry-out means for driving; a driving means on which a traveling body, a crushing means, and a power engine for generating power for driving the carry-in / out means are mounted; A cooling fan that sucks outside air into the room and cools the heat exchanger installed in the engine room, a dust-proof net that is provided in the heat exchanger and removes dust and the like sucked together with outside air, and below the dust-proof net And a lid provided to be openable and closable at the discharge port so as to be opened by an increase in the air pressure in the engine room.

With the above configuration, when the pressure in the engine compartment rises, the lid of the exhaust outlet that has been closed until now is opened by air pressure, and dust that falls from the dust-proof net is automatically discharged from the exhaust outlet to the lower part of the engine compartment. Therefore, when the operation of the recycling machine is started next, the dust accumulated on the lid body soars and does not adhere to the dustproof net again, and the dustproof net is always kept clean. As a result, the heat dissipation effect of the heat exchanger does not decrease due to dust, etc., preventing the engine from overheating or the temperature of the hydraulic oil from rising abnormally and prematurely deteriorating. be able to.
In addition, since it eliminates the need to periodically clean the dust-proof net, it improves the maintainability of the recycling machine and neglects the discharge work, so the work is interrupted or canceled due to overheating of the engine during crushing of the material to be crushed This improves work efficiency.

  In the recycling machine of the present invention, the lid is formed of an elastic body that is elastically deformed in accordance with the pressure change in the engine chamber caused by forward and reverse rotation of the cooling fan, and the discharge port is closed from below by the lid. .

  With this configuration, foreign matter can be prevented from entering the engine compartment from the outlet while the recycling machine is stopped, and since the lid can be easily manufactured and assembled, it can be implemented at low cost.

  The recycling machine of the present invention is a self-propelled traveling body, a crushing means installed on the traveling body, a carrying-in means for carrying a material to be crushed into the crushing means, and a material to be crushed by the crushing means are carried out. A recycle machine comprising: a carry-out means for driving; a driving means on which a traveling body, a crushing means, and a power engine for generating power for driving the carry-in / out means are mounted; A cooling fan that sucks outside air into the room and cools the heat exchanger installed in the engine room, a dust-proof net that is provided in the heat exchanger and removes dust and the like sucked together with outside air, and below the dust-proof net Is formed by an elastic body that is elastically deformed in response to a pressure change in the engine compartment caused by forward and reverse rotation of the cooling fan, and is opened by an increase in air pressure in the engine compartment. Those constructed from an openable lid mounted from below to the outlet.

With the above configuration, when the pressure in the engine chamber rises, the lid of the discharge port that has been closed until now is opened downward by air pressure, and the dust that has fallen from the dustproof net is automatically moved down the engine chamber from the discharge port. Therefore, when the recycling machine is started next time, the dust accumulated on the lid does not rise up and adheres to the dustproof net again, and the dustproof net is always clean. Since the heat dissipation effect of the heat exchanger is not reduced by dust or the like, the engine will overheat or the operating oil temperature will rise abnormally and the operating oil will deteriorate early. Can be prevented.
In addition, since it eliminates the need to periodically clean the dust-proof net, it improves the maintainability of the recycling machine and neglects the discharge work, so the work is interrupted or canceled due to overheating of the engine during crushing of the material to be crushed Therefore, it is possible to improve work efficiency and prevent foreign matter from entering the engine compartment from the discharge port while the recycling machine is stopped, and it is easy to manufacture and assemble the lid, which can be implemented at low cost. .

  According to the recycling machine of the present invention, when the lid of the discharge port is opened by air pressure, dust or the like dropped from the dustproof net is automatically discharged from the discharge port to the lower part of the engine compartment. The dust accumulated on the surface does not soar and adhere to the dustproof net again. Also, it eliminates the need to periodically clean the dustproof net, improving the maintainability of the recycling machine and neglecting the discharge work. In addition, the work efficiency is improved because the work is not interrupted or stopped due to overheating of the engine during the work of crushing the object to be crushed.

Embodiments of the present invention will be described in detail with reference to the drawings.
1 is a side view of the recycling machine, FIG. 2 is a plan view of the recycling machine, FIG. 3 is an enlarged sectional view taken along line AA of FIG. 1, and FIG.
The recycling machine shown in FIG. 1 and FIG. 2 drives the traveling body 1, the crushing means 2 installed on the traveling body 1, the carry-in means 3 for carrying the material to be crushed into the crushing means 2, and the crushing means 2. The drive unit 4 and the unloading unit 5 for unloading the object to be crushed by the crushing unit 2 constitute the whole.
The traveling body 1 has a track frame 7 composed of a center frame 7a and side frames 7b provided on both sides thereof, and an idler 8 is supported on one end side of each side frame 7b so as to be movable back and forth. A sprocket 10 is provided at the other end of the side frame 7b. The sprocket 10 is rotationally driven by a travel motor 9 made of a hydraulic motor.
An endless crawler belt 11 is provided between the idler 8 and the sprocket 10, and the traveling body 1 can be moved forward or backward by rotating the crawler belt 11 with the sprocket 10. By changing the crawler belt 11 separately, the direction can be changed.

The crushing means 2 installed on the center frame 7a of the track frame 7 is used to cover a large amount of building waste materials generated when a building or the like is dismantled and asphalt blocks generated when repairing asphalt pavement. The crushed material is crushed to a reusable size, and is constituted by, for example, a hydraulic crusher (not shown).
The hydraulic crusher is composed of a fixed blade and a movable blade (both not shown) reciprocated by hydraulic pressure, and the object to be crushed inserted between the fixed blade and the movable blade has a predetermined size. The entire crushing means 2 is covered with the case 2a to prevent the object to be crushed from scattering to the surroundings, and at the same time, the noise generated during crushing is leaked to the outside. Reduced.

The carry-in means 3 installed on the side to be crushed of the crushing means 2 is formed by a hopper 3a having an upper surface opened and a chain conveyor 3b provided at the bottom of the hopper 3a, and a construction machine such as a hydraulic excavator. Thus, the object to be crushed put into the hopper 3a by the chain conveyor 3b is carried into the carry-in port of the crushing means 2.
Driving means 4 and unloading means 5 are installed on the discharge port side of the crushing means 2.
The drive means 4 generates hydraulic pressure as power for driving the crushing means 2, the carry-in means 3, the carry-out means 5 and the like, and has an engine chamber 4b surrounded by a bonnet 4a.
A power engine 13 is installed in the engine chamber 4b, and a hydraulic pump (not shown) is driven by the power engine 13. The hydraulic pressure generated by the hydraulic pump is hydraulic piping (not shown). In this way, the traveling motor 9 provided in the traveling body 1, the hydraulic motor provided in the crushing means 2, the hydraulic motor provided in the carry-in / out means 3 and 5, and the like are supplied.

Further, an intake port 4d is opened in one side plate 4c of the engine chamber 4b as shown in FIG.
The intake port 4d is provided with a relatively fine first dust-proof net 14 to prevent inhalation of dust generated during the crushing of the object to be crushed, and a radiator or oil inside the intake port 4d. Heat exchangers 15 such as a cooler and an intercooler are arranged in a straight line (parallel) in a direction orthogonal to the intake direction (arrow B).
The space around the heat exchanger 15 is sealed between the inner peripheral surface of the bonnet 4a and the bottom plate 4e of the engine chamber 4b by a sealing member 16 formed of an elastic body such as sponge, and the air taken in from the intake port 4d. All pass through the heat exchanger 15, and the second dust-proof net 17 is finer than the first dust-proof net 14 on the front surface of the heat exchanger 15, that is, the surface facing the intake port 4d. Is detachably attached.
The second dust-proof net 17 captures finer dust that has passed through the first dust-proof net 14. A discharge port for discharging dust captured by the second dust-proof net 17 is disposed below the second dust-proof net 17. 18 is opened.

The discharge port 18 is formed in the bottom plate 4e located between the side plate 4c having the intake port 4d opened and the heat exchanger 15, and is opened to the full width of the heat exchanger 15. A lid 20 is provided that automatically opens and closes when the air pressure in the engine chamber 4b changes.
The lid 20 is made of, for example, a rubber plate or a resin such as Teflon (registered trademark) having elasticity and lubricity that elastically deforms in response to a pressure change in the engine chamber 4b caused by forward and reverse rotation of a cooling fan 23 described later. It is formed of an elastic body and has a length that covers the entire width of the discharge port 18.
One side edge of the lid 20 is airtightly fixed to the lower surface of the bottom plate 5 a below the seal member 16 by a fixing tool 21 such as a screw.
The other side edge of the lid body 20 is in pressure contact with the lower end edge of the side plate 4c where the air inlet 4d is opened from below while the entire lid body 20 is elastically deformed in an arc shape in the width direction. At the other end edge, a fastening tool 22 that engages with the lower end edge of the side plate 4c is attached.
The fastening device 22 has a substantially U-shaped cross section made of resin, for example, and the other end edge of the lid body 20 is formed by engaging the groove portion with the lower edge of the side plate 4c from below by the elasticity of the lid body 20. Inhalation to the engine compartment 4b side is prevented.

On the other hand, a cooling fan 23 is provided between the heat exchanger 15 and the power engine 13 accommodated in the engine room 4b.
The cooling fan 23 is linked to the power engine 13 by power transmission means 24 such as a fan belt, and can be rotated forward and backward by the power engine 13.
The carry-out means 5 installed on the discharge port side of the crushing means 2 is composed of a belt conveyor 5a installed below the drive means 5, and one end side is pivotally attached to the center frame 7a of the track frame 7. Yes.
The other end side of the belt conveyor 5a is supported by the support means 6 in a state of being inclined so as to increase sequentially, and the object to be crushed discharged by the crushing means 2 is transported to a transport vehicle (not shown) such as a truck. It can be loaded or piled up on the ground of the work site.
Incidentally, reference numeral 25 in the figure is attached to the work hole 4f opened in the bottom plate 4e so as to be opened and closed in order to inspect and maintain the power engine 13 provided in the engine chamber 4b or to perform work such as oil exchange. It is an inspection cover.
Moreover, in the said embodiment, although the coarseness of the 2nd dustproof net 17 was made fine with respect to the 1st dustproof net 14, of course, you may make it the same degree of coarseness according to a required degree.

Next, the operation of the recycling machine configured as described above will be described.
For example, when a large amount of concrete lump etc. generated at a demolition site such as a building is crushed and recycled, the recycling machine itself is transported to the work site using a transport vehicle.
Then, at the work site, using a construction machine such as a hydraulic excavator, the object to be crushed is put into the hopper 3a of the carrying-in means 3 to start the recycling work. During the operation of the recycling machine, the power engine 13 of the driving means 4 is used. Is continuously operated. As a result, outside air is continuously drawn into the engine chamber 4b by the cooling fan 23 as shown by an arrow B in FIG.
When the outside air sucked from the suction port 4d passes through the heat exchanger 15, it cools the radiator, the oil cooler, and the like constituting the heat exchanger 15, but the dust generated when the object to be crushed is crushed together with the outside air. It is absorbed into the engine compartment 4b.
Since these dusts and the like are captured by the first dustproof net 14 provided at the intake port 4d and the second dustproof net 17 provided at the front surface of the heat exchanger 15, they adhere to the heat radiation fins of the heat exchanger 15 and the like. Although it does not occur, it adheres and accumulates on the first dustproof net 14 and the second dustproof net 17.
The dust deposited on the first dustproof net 14 and the second dustproof net 17 clogs the net, lowers the air permeability, causes the power engine 13 to overheat, or the temperature of the hydraulic oil becomes abnormal. It becomes high and causes deterioration.

However, in the recycling machine of the present invention, when the power engine 13 is stopped to interrupt or end the work, the power engine 13 is rotated forward until now and absorbs outside air into the engine chamber 4b from the intake port 4d. The cooled cooling fan 23 is reversed for a certain time, and the air in the engine compartment 4b is exhausted as shown by an arrow C in FIG.
As a result, the dust and the like deposited on the first dust net 14 and the second dust net 17 are blown off and dropped.
At the same time, the pressure in the engine chamber 4b between the intake port 4d and the heat exchanger 15 rises, so that the lid 20 of the exhaust port 18 that has been closed is opened downward by air pressure. The dust dropped from 14 is automatically discharged from the discharge port 18 to the lower side of the engine room 4b, and the dust dropped from the first dustproof net 14 is also discharged outward.
As a result, when the operation of the recycling machine is started next, dust or the like accumulated on the lid 20 does not rise and adheres to the second dustproof net 17 again, and the first dustproof net 14 or the second dustproof net. Since the net 17 is always maintained in a clean state, the heat dissipation effect of the heat exchanger 15 is not reduced by dust or the like, so the engine overheats or the temperature of the hydraulic oil rises abnormally, It is possible to prevent the hydraulic oil from prematurely deteriorating.
Moreover, since the trouble of regularly cleaning the first dustproof net 14 and the second dustproof net 17 can be omitted, the maintainability of the recycling machine is also improved.

In the above-described embodiment, the cooling fan 23 is driven by the power engine 13 via the power transmission means 24. However, as in the modifications shown in FIGS. The cooling fan 23 may be directly driven using the source 27. In this case, the same effect can be obtained if the cooling fan 23 and the rotation driving source 27 are provided between the heat exchanger 15 and the engine 13. can get.
That is, during the operation of the recycling machine, the cooling fan 23 is driven by the rotational drive source 27, and outside air is drawn into the engine room 4d from the intake port 4d as shown in FIG. When the operation of the machine is interrupted or terminated, the cooling fan 23 is reversed by a rotation drive source 27 for a certain period of time.
As a result, as shown in FIG. 6, dust or the like deposited on the first dust-proof net 14 or the second dust-proof net 17 is blown off and dropped, and at the same time, the lid 20 provided at the discharge port 18 causes the pressure in the engine chamber 4b. The dust is dropped downward from the second dust-proof net 17, so that the dust dropped from the second dust-proof net 17 is discharged from the discharge port 18 to the lower side of the engine room 4b, and the dust dropped from the first dust-proof net 14 is also discharged outward. Thus, the same effects as those of the above embodiment can be obtained.
In the modification, the forward and reverse rotation of the cooling fan 23 can be easily performed by a switch or the like, so that the power transmission means 24 capable of forward and reverse rotation is not necessary, and the implementation is easy.

7 and 8 show a modified example of the lid 20 that opens and closes the discharge port 18. In this modified example, the lid 20 is formed by two elastic plates 20a and 20b, and each elastic plate 20a is formed. , 20b are fixed to the lower edge of the side plate 4c and the bottom plate 4e by the fixing tool 21, respectively.
And the other side edge of each elastic board 20a, 20b is crimped | compressed to the palm state in the downward direction of the discharge port 18, By this, during operation | use of a recycling machine, as shown in FIG. 18 is in a closed state.
Next, when the operation of the recycling machine is interrupted or terminated, the cooling fan 23 is reversed for a certain time, and dust and the like deposited on the first dustproof net 14 and the second dustproof net 17 are blown away as shown in FIG. At the same time, the elastic plates 20a and 20b provided in the discharge port 18 are opened outward by the increase in pressure in the engine chamber 4b, so that dust or the like that has dropped from the second dustproof net 17 is discharged from the discharge port 18. Dust and the like that are discharged below the engine chamber 4b and dropped from the first dust-proof net 14 are also discharged outward, and the same effects as those of the above-described embodiment can be obtained.

  In the embodiment and the modification, the case where the heat exchangers 15 such as a radiator, an oil cooler, and an intercooler are arranged in a straight line (parallel) in a direction orthogonal to the intake direction (arrow B) has been described. This can also be implemented in a similar manner when arranged in a series (in series) in the intake direction (arrow B).

It is a side view of the recycling machine which becomes embodiment of this invention. It is a top view of the recycling machine which becomes embodiment of this invention. It is an expanded sectional view which follows the AA line of FIG. It is operation | movement explanatory drawing of the recycling machine which becomes embodiment of this invention. It is explanatory drawing which shows the modification of the cooling fan provided in the recycling machine which becomes embodiment of this invention. It is effect | action explanatory drawing which shows the modification of the cooling fan provided in the recycling machine which becomes embodiment of this invention. It is explanatory drawing which shows the modification of the cover body provided in the recycling machine which becomes embodiment of this invention. It is effect | action explanatory drawing which shows the modification of the cover body provided in the recycling machine which becomes embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling body 2 Crushing means 3 Carry-in means 4 Power means 4b Engine room 5 Carry-out means 15 Heat exchanger 17 (2nd) Dust-proof net 18 Discharge port 20 Cover body 23 Cooling fan

Claims (3)

  A self-propelled traveling body, a crushing means installed on the traveling body, a carrying-in means for carrying a material to be crushed into the crushing means, and a carrying-out means for carrying out the material to be crushed by the crushing means A recycle machine comprising: a driving means on which a power engine for generating power for driving the traveling body, the crushing means, and the carry-in / out means is mounted, and the engine housing the power engine A cooling fan that sucks outside air into the room and cools a heat exchanger installed in the engine room, a dustproof net that is provided in the heat exchanger and removes dust and the like sucked together with the outside air, and A recycle machine comprising: a discharge port opened below a dust-proof net; and a lid that is openable and closable at the discharge port so as to be opened by an increase in air pressure in the engine room. .   The lid is formed of an elastic body that is elastically deformed in response to a pressure change in the engine chamber caused by forward and reverse rotation of the cooling fan, and the discharge port is closed from below by the lid. Recycling machine as described in. A self-propelled traveling body, a crushing means installed on the traveling body, a carrying-in means for carrying a material to be crushed into the crushing means, and a carrying-out means for carrying out the material to be crushed by the crushing means A recycle machine comprising: a driving means on which a power engine for generating power for driving the traveling body, the crushing means, and the carry-in / out means is mounted, and the engine housing the power engine A cooling fan that sucks outside air into the room and cools a heat exchanger installed in the engine room, a dustproof net that is provided in the heat exchanger and removes dust and the like sucked together with the outside air, and An exhaust port that is opened below the dust-proof net and an elastic body that is elastically deformed in response to a pressure change in the engine chamber caused by forward and reverse rotation of the cooling fan, and the engine chamber Recycling machine, characterized by comprising a closable lid mounted from below the discharge port to open by an increase in air pressure.

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