JPH061852Y2 - Arrangement structure of cooling equipment for construction machinery - Google Patents

Description

TECHNICAL FIELD The present invention relates to an arrangement structure of a cooling device including a radiator, a fan and the like arranged on an upper swing body of a construction machine.

Prior Art FIG. 3 is a side view of a prior art wheel type shovel 1. In the figure, 2 is a lower traveling structure, 3 is an upper revolving structure, 4
Is an engine, and 5 is a counterweight. FIG. 4 is a plan view seen from A in FIG. 3, where O is the upper revolving structure 3
, R is the rear end turning radius. Figure 5 shows
It is a B section detailed drawing of a figure. In the figure, 6 is a cooling fan provided in the engine 4, 7 is a radiator for cooling the engine, 8 is an oil cooler for cooling the operating oil, and 9 is a distribution oil pipe of the oil cooler 8. FIG. 6 is a view as seen from CC in FIG.

Next, the arrangement structure of the conventional cooling device will be described with reference to FIGS. An engine in which a radiator for engine cooling and an oil cooler for cooling hydraulic oil 8 which are opposed to each other are in close contact with each other so as to be in close contact with each other, and a cooling fan 6 is provided on the rear side of the radiator 7. 4 is arranged so that air from the outside can pass through the ventilation passages (not shown) of the oil cooler 8 and the radiator 7.

In the oil cooler 8, the return oil of the operating oil whose temperature has risen passes through the circulating oil pipe 9. Then, since the cooling fan 6 is rotated by the rotation of the engine 4, the outside air flows in the direction of the arrow C, and heat is exchanged while passing through the ventilation passages of the radiator 7 and the oil cooler 8 so that the operating oil and the engine Cool the cooling water.

Problems to be solved by the invention When a construction machine such as a wheel type shovel performs work on a narrow site such as in a city area or on a main road, the rear turning radius R of the upper revolving superstructure is large and it is difficult to work. Or, it cuts off the traffic on the main road. Therefore, various measures have been taken into consideration for reducing the rear end turning radius R of the upper turning body. For example, FIG. 7 is a plan view of a main part of the upper swing body. There is also a method in which the engine is mounted in the front-rear direction of the upper revolving structure, and the radiator and the oil cooler are separately arranged so that the mounting position of the counterweight is moved to the shaded portion. However, when the oil cooler is separated, the fan and the drive source 10 are required, which is a problem. Further, when the power of the engine is taken out instead of the drive source 10, the capacity of the engine must be increased, which is also a problem.

An object of the present invention is to solve the above-mentioned problems and to provide an arrangement structure of a cooling device capable of reducing a rear end turning radius of an upper turning body.

Means for Solving the Problems The means of this invention taken to solve the above problems are: A duct member is provided between the facing surfaces of the radiator and the oil cooler arranged on the upper revolving structure so that air can pass through the oil cooler, the duct member and the radiator. When the engine was mounted in the front-rear direction of the upper revolving structure, the oil cooler was arranged on the concave surface side inside the counterweight at the rear of the upper revolving structure.

Action a. Since a duct member is provided between the opposing facing surfaces of the radiator and the oil cooler, and air is allowed to pass through the oil cooler, the duct member and the radiator, it is necessary to newly give power to the cooling device. Absent.

B. The oil cooler was separated from the radiator and both were connected via a duct member, and the oil cooler was arranged on the concave side inside the counterweight at the rear of the upper swing body. As a result, the counterweight mounting position can be moved forward by the thickness of the oil cooler. Therefore, the rear end turning radius of the upper turning body can be reduced.

Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a plan view of an upper revolving superstructure 11 having an arrangement structure according to the present invention. In the figure, the same reference numerals are given to those using the same constituent elements as those in the prior art. FIG. 2 is a detailed view of a portion C of FIG. In the figure, 12 is a radiator, 13 is an oil cooler, and 14 is a duct member.

Next, the configuration of the arrangement structure according to the present invention will be described with reference to FIGS. 1 and 2. A duct member 14 is provided between the facing surfaces of the radiator 12 and the oil cooler 13 arranged on the upper revolving structure 11, and air is passed through the oil cooler 13, the duct member 14 and the radiator 12. . At the same time, when the engine 4 is mounted in the front-rear direction of the upper swing body 11, the oil cooler 13 is arranged on the concave surface 2 side inside the counterweight 5.

Next, the function and function of the arrangement structure according to the present invention will be described. Since the duct member 14 is interposed between the oil cooler 13 and the radiator 12, the external air sequentially passes through the ventilation passages in the oil cooler 13, the duct member 14, and the radiator 12 from the arrow E to the arrow. . As a result, the air exchanges heat, so that the hydraulic oil and the engine cooling water are cooled. Further, the engine 4 is mounted in the front-rear direction of the upper swing body 11 and the oil cooler 13 is arranged on the concave surface 2 side inside the counterweight 5. Thereby, the mounting position of the counterweight 5 can be moved forward by the thickness dimension of the oil cooler 13. Therefore, as shown in FIG.
It can be reduced to ₁ .

Effect of the Invention Among construction machines, for example, when a wheel type shovel performs work on a narrow site such as in an urban area or on a main road, the rear turning radius R of the upper revolving superstructure becomes large, which makes the work difficult. Alternatively, it cuts off the traffic on the main road. Therefore, various measures have been taken into consideration for reducing the rear end turning radius R of the upper turning body.

In the arrangement structure according to the present invention, a duct member is provided between the facing surfaces of the radiator and the oil cooler, and air is formed through the oil cooler, the duct member and the radiator, and the engine is rotated upward. When mounted in the front-back direction of the body, the oil cooler is arranged on the concave side inside the counterweight. As a result, the counterweight mounting position can be moved forward by the thickness of the oil cooler.

Therefore, in the construction machine having the arrangement structure for the cooling device according to the present invention, it is possible to reduce the size of the upper revolving structure so as to cope with work in a narrow field such as an urban area or on a main road.

[Brief description of drawings]

FIG. 1 is a plan view of an upper revolving superstructure having an arrangement structure according to the present invention, FIG. 2 is a detailed view of a portion C of FIG. 1, FIG. 3 is a side view of a conventional wheel shovel, and FIG. Is a plan view seen from A in FIG. 3, FIG. 5 is a detailed view of B portion in FIG. 4,
FIG. 6 is a view as seen from CC in FIG. 5, and FIG. 7 is a plan view of the essential parts of another embodiment of the prior art. 3, 11 ………… Upper revolving structure 4 …………………… Engine 5 ………………………… Counterweight 6 …………………… Cooling fan 7, 12 ………… … Radiators 8, 13 …………… Oil cooler 14 ………………… Duct members

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. An engine having a radiator for cooling an engine and an oil cooler for cooling hydraulic oil, which are opposed to each other, are integrally assembled with each other, and a cooling fan is provided on the rear side of the radiator. In the construction machine mounted on the vehicle, a duct member is provided between the facing surfaces of the radiator and the oil cooler that face each other, and air is passed through the oil cooler, the duct member and the radiator, and the engine is rotated upward. An arrangement structure of a cooling device for a construction machine, wherein the oil cooler is arranged on a concave surface side inside a counterweight at a rear portion of an upper revolving structure when mounted in a front-back direction of a body.