JP2022045660A - Exhaust air control guard - Google Patents

Abstract

To provide an exhaust air control guard capable of controlling an emission amount of outside air introduced in an engine guard to maintain an engine and the like at a predetermined temperature and improving work efficiency of a construction machine such as a crane.SOLUTION: An exhaust air control guard forms a part of an engine guard including at least an engine to be a power source of a construction machine and a fan for introducing outside air into the inside. The exhaust air control guard is provided in an opening portion formed on a top plate part of the engine guard to be freely openable/closable so as to control an exhaust air amount of the introduced outside air by adjusting an opening amount of the opening portion. It is preferable that a capacitor of an air conditioner of a cabin, which is an operation part of the construction machine, is placed on a top surface side of the top plate part so as to protect the capacitor from the exhaust air through the opening portion.SELECTED DRAWING: Figure 4

Description

The present invention relates to an exhaust air control guard.

Construction machinery such as cranes are equipped with relatively large engines and hydraulic equipment as power sources. The engine and the like are housed in the engine guard of the casing. The engine guard protects the engine and the like from wind and rain, and also protects the worker from heat and noise.

An engine or the like can exhibit a desired work efficiency at a predetermined temperature. In order to prevent the engine from becoming hot and the work efficiency from decreasing, the engine guard is generally provided with a ventilation port such as a duct for exhausting the internal air, and a fan for taking in outside air is inside. Is arranged in.

Power generation is characterized in that outlets are formed on both the upper and lower surfaces, and one of the outlets is selectively opened for use and the other is closed for use. An air exhaust duct for the device has been proposed (Japanese Patent Laid-Open No. 10-336958). According to this air exhaust duct, when it snows, the air outlet on the upper surface is closed by a cover and the air is exhausted from the air outlet on the lower surface. It is said that it can be prevented from becoming.

If the amount of outside air introduced by the fan is constant, the amount of outside air introduced into the exhaust duct is also constant. Therefore, when the temperature of the outside air is remarkably low, the power generation device and the engine may be cooled more than necessary, and the working efficiency of the engine and the like may decrease. Further, when the temperature of the outside air is high, the cooling of the power generation device and the engine becomes insufficient, and the work efficiency of the engine and the like may decrease.

Japanese Unexamined Patent Publication No. 10-336958

In view of the above circumstances, the present invention can control the amount of outside air introduced into the engine guard to keep the engine or the like at a predetermined temperature and improve the work efficiency of construction equipment such as a crane. An object is to provide an exhaust air control guard.

One aspect of the present invention made to solve the above problems is an exhaust air control guard forming a part of an engine guard including at least an engine that powers a construction machine and a fan that introduces outside air into the inside. The exhaust control guard is arranged so as to be openable and closable in the opening formed in the top plate of the engine guard, and can control the amount of exhaust air of the introduced outside air by adjusting the amount of opening the opening. be.

The exhaust control guard can open and close the opening formed in the top plate of the engine guard, and by adjusting the opening and closing amount, that is, the opening amount of the opening, the outside air introduced into the engine guard can be removed. The amount of discharge can be controlled. Therefore, when the outside air temperature is high, the amount of outside air discharged is increased, and when the outside air temperature is low, the amount of outside air discharged is reduced, so that the temperature inside the engine guard can be maintained at a desired temperature.

The exhaust air control guard of the present invention can control the amount of exhaust air introduced into the engine guard to keep the engine or the like at a predetermined temperature and improve the work efficiency of construction equipment such as a crane.

FIG. 1 is a schematic side view showing a crane provided with an exhaust air control guard according to an embodiment of the present invention. FIG. 2 is a schematic top view of the engine guard and cabin of FIG. FIG. 3 is a schematic side view of FIG. 2 engine guard and cabin. FIG. 4 is a schematic aspect showing a state in which the exhaust air control guard is opened in the engine guard of FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.

[crane]
FIG. 1 shows a configuration of a crane 1 provided with a wind exhaust control guard according to an embodiment of the present invention. This crane 1 is mounted on the lower traveling body 2 and the lower traveling body 2, and can be swiveled in a plane parallel to the plane on which the lower traveling body 2 travels. It is a crawler crane mainly provided with a crane attachment 4 that can be arranged.

[Lower running body]
The lower traveling body 2 has a pair of crawlers as a traveling device, and can travel in an arbitrary direction by operating an operator. The crane 1 may be a wheel crane having wheels as a traveling device.

[Upper swivel body]
The upper rotating body 3 is mounted on the lower traveling body 2 and can turn in a plane parallel to the plane on which the lower traveling body 2 travels. The “advancing surface” means, for example, the ground, and when traveling on the surface (upper surface) of an iron plate or the like laid on the ground, the surface thereof. The "parallel plane" is a slight inclination with respect to the plane on which the lower traveling body 2 advances due to design intersections, manufacturing errors, etc. in the lower traveling body 2 and the upper rotating body 3 in addition to the two completely parallel surfaces. Also includes surfaces with.

The upper swing body 3 has a cabin C for an operator, an engine guard G for accommodating an engine and the like, a clay attachment 4, a winch for raising the clay attachment 4, a tank guard (not shown) for accommodating a fuel tank and the like.

The clay attachment 4 is arranged substantially in the center of the upper swing body 3 in the width direction, and the engine guard G, the cabin C arranged in front of the engine guard G, and the tank guard are located on both ends in the width direction of the upper swing body 3. Be placed. The "front" is the direction in which the operator seated on the cabin C faces, and the "width direction of the upper swivel body 3" is the front (front-back direction) in the plane in which the upper swivel body 3 turns. ) Is the direction orthogonal to.

(Engine guard)
As shown in FIGS. 2 to 4, the engine guard G is a casing arranged on the upper swing body 3, and has a top plate portion 5 and a side plate portion 6 that supports the top plate portion 5. The top plate portion 5 and the side plate portion 6 may be integrally formed or may be composed of a plurality of plate-shaped members. The side plate portion 6 may have an inspection door for maintenance.

The engine guard G is a working oil tank provided with a filter for storing an engine, a fan for introducing outside air inside, a hydraulic device for operating a crane, and working oil used for the hydraulic device, and filtering impurities in the working oil. Etc. are mainly included. It also includes a radiator for cooling the cooling water of the engine, an oil cooler for cooling the working oil, and the like.

An opening portion for introducing outside air is formed in a part of the side plate portion 6. An opening portion for discharging the introduced outside air is formed in a part of the top plate portion 5. In the opening portion of the top plate portion 5, an exhaust air control guard forming a part of the engine guard G is arranged so as to be openable and closable.

It is preferable that the number of openings formed in the top plate portion 5 is a plurality. By doing so, a part of the opening portion is opened and the remaining opening portion is sealed, so that the outside air introduced into the engine guard G may be exhausted (hereinafter, simply referred to as "exhaust air"). ) Can be easily controlled. In the present embodiment, the top plate portion 5 has four opening portions 51, 52, 53, 54. The opening portion 54 is formed on a side surface portion of a substantially cubic convex body 5a arranged in a part of the top plate portion 5.

Exhaust wind control guards 71, 72, 73, 74 are arranged in the opening portions 51, 52, 53, 54, respectively. The method of arranging the exhaust air control guards 71, 72, 73, 74 is not particularly limited, but for example, one edge is fixed with a hinge and the edge on the side facing the other edge is used. By pulling up the portion upward, the opening portions 51, 52, 53, 54 can be made into a door (swing door) that can be opened and closed freely.

It is preferable that the exhaust wind control guards 71, 72, 73, 74 have support members 81, 82, 83, 84 for holding the open state. The support members 81, 82, 83, 84 are not particularly limited, but are, for example, the exhaust air control guards arranged at the edges of the opening portions 51, 52, 53, 54 and facing the edges. It can be a member that supports the edges of 71, 72, 73, 74.

It is preferable that the support members 81, 82, 83, 84 have an adjusting mechanism for adjusting the opening amount of the exhaust air control guards 71, 72, 73, 74. By doing so, the amount of exhaust air can be finely controlled. The adjusting mechanism is not particularly limited, but for example, the support members 81, 82, 83, 84 have a ratchet mechanism, and the support members 81, 82, 83, 84 can be fixed to a desired length. Can be. By fixing the support members 81, 82, 83, 84 to a desired length, the ventilation control guards 71, 72, 73, 74 can be fixed by adjusting the opening angle, and the opening amount can be adjusted.

It is preferable that the exhaust air control guard has a condenser 9 of the air conditioner of the cabin C mounted on the upper surface side of the top plate portion 5 and serves as a windshield for the exhaust air from the opening portion with respect to the condenser 9. By doing so, it is possible to suppress the condenser 9 from being heated by the exhaust air, and the air conditioner can efficiently air-condition the inside of the cabin C.

At least one of the wind exhaust control guards may be the windshield. Specifically, the exhaust air control guard 71 closest to the condenser 9 may be the windshield. More specifically, the exhaust air control guard 71 is an opening / closing door in which the edge portion on the side close to the condenser 9 is fixed with a hinge and the edge portion on the side away from the condenser 9 is pulled upward. By opening the exhaust air control guard 71 so as to form an acute angle with respect to the opening surface of the opening portion 51, the exhaust gas from the opening portion 51 hits the lower surface (inner surface) of the exhaust air control guard 71 and is separated from the condenser 9. Is discharged to. By doing so, the exhaust air control guard 71 can be used as a windshield for the exhaust air from the opening portion 51 with respect to the condenser 9.

It is preferable that the exhaust air control guard also serves as a replacement inspection lid for the filter 10. By doing so, the replacement work of the filter 10 can be facilitated. At least one of the exhaust air control guards may also serve as the replacement inspection lid. In other words, by forming an opening portion 51 in the upper part of the filter 10 arranged in the engine guard G and disposing the exhaust air control guard 71 in the opening portion 51, the exhaust air control guard 71 can be used as a replacement for the filter 10. It can also be used as an inspection lid.

[advantage]
Since the exhaust control guard forms a part of the engine guard G, it is not necessary to provide an exhaust duct or the like on the engine guard G. Therefore, it is possible to reduce the size and cost of the engine guard G. The exhaust air control guard can adjust the amount of opening the opening portion formed in the top plate portion of the engine guard G, and can control the amount of exhaust air of the outside air introduced into the engine guard G. Therefore, the inside of the engine guard G can be kept at a desired temperature. Specifically, when the outside air temperature is high such as in summer, the opening amount of the opening portion is increased and the exhaust air amount is increased to prevent the engine and working oil in the engine guard G from overheating. Further, when the outside air temperature is low such as in winter, the opening amount of the opening portion is reduced and the exhaust air amount is reduced to prevent the engine and working oil from being supercooled. Therefore, the engine and working oil can be kept at a predetermined temperature regardless of the conditions of the outside air, and the working efficiency of the crane 1 can be improved.

[Other embodiments]
The above embodiment does not limit the configuration of the present invention. Therefore, the above-described embodiment can be omitted, replaced or added with components of each part of the above-described embodiment based on the description of the present specification and common general technical knowledge, and all of them are construed to belong to the scope of the present invention. Should be.

In the above-described embodiment, the crawler crane has been described as an example, but the present invention is not limited to this, and the exhaust control guard is applied to a wheel crane having wheels, a large crane such as a ruffing tower crane, and a construction machine such as a shovel car. Can be provided.

In the above-described embodiment, the support member having the ratchet mechanism has been described, but it is also possible that the hinge has the ratchet mechanism and the opening angle of the exhaust air control guard can be fixed at a desired angle. .. In this case, the support member may be abolished.

The exhaust wind control guard according to the present invention is particularly preferably used for construction machinery having a relatively large engine.

1 Crane 2 Lower traveling body 3 Upper swivel body 4 Clay attachment 5 Top plate part 51, 52, 53, 54 Opening part 5a Convex body 6 Side plate part 71, 72, 73, 74 Blowout control guard 81, 82, 83, 84 Support member 9 Condenser 10 Filter C Cabin G Engine guard

Claims (3)

An exhaust control guard that forms part of an engine guard that includes at least an engine that powers construction machinery and a fan that introduces outside air into the interior.
It is arranged so that it can be opened and closed in the opening formed in the top plate of the engine guard.
An exhaust air control guard that can control the amount of exhaust air of the introduced outside air by adjusting the amount of opening of the opening portion. The condenser of the air conditioner of the cabin, which is the operation part of the construction machine, is placed on the upper surface side of the top plate part.
The exhaust control guard according to claim 1, which is a windshield for exhaust air from the opening portion with respect to the condenser. The engine guard further includes a hydraulic device for operating the construction machine and a working oil tank provided with a filter for storing the working oil used in the hydraulic device and filtering impurities in the working oil.
The exhaust air control guard according to claim 1 or 2, which also serves as a replacement inspection lid for the filter.

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