JPH1111141A - Work vehicle drainage structure - Google Patents

Abstract

(57) [Summary] [PROBLEMS] In a work vehicle in which an air conditioner is provided on a front end side of a driving cabin top plate, a drainage structure which has a high drainage property from the air conditioner and is hardly obstructed to view is provided. Make it possible to discharge downward from above. SOLUTION: A drain hose 42 extending from a drain portion 13c of the evaporator portion 13 is connected to an upper end side of a floton glass column 44. The windshield support 44 is a pipe support, and discharges the drainage from the drain hose 42 by lowering the inside thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage structure for a working vehicle such as a combine vehicle or an agricultural vehicle such as a combine tractor, a backhoe or the like, and more particularly, an air conditioner for a driving cabin is provided on a driving cabin top plate. The present invention relates to a drainage structure for a work vehicle provided on a front end side of a cabin.

[0002]

2. Description of the Related Art Conventionally, in the above-mentioned work vehicle, a drain hose extending from an air conditioner reaches a rear end side of a top plate of an operating cabin and descends along the side wall from the top plate at the rear end side. By arranging the drain hose, the drain water from the air conditioner is discharged downward.

[0003]

Conventionally, the drainage path has been long and complicated. As a result, if the body is slightly inclined, it becomes difficult to flow. An object of the present invention is to provide a drainage structure that is excellent both in terms of structure and drainage, in a state that does not hinder operation.

[0004]

The constitution, operation and effect of the invention according to claim 1 are as follows.

[Constitution] In a work vehicle drainage structure in which an air conditioner for an operation cabin is provided on a front end side of a cabin on an operation cabin top plate, a windshield column of the operation cabin is formed on a pipe column, and Is introduced to the upper end side of the windshield support, and the inside of the windshield support is lowered to be discharged.

[Operation] Since the drainage from the air conditioner is discharged by lowering the inside of the windshield column, the drainage channel from the air conditioner to the windshield column as a downward drainage channel is shorter and simpler than before. The drainage of the air conditioner can be lowered and discharged. In addition, even if a separate descending drainage channel separate from the windshield post is provided near the windshield, the drainage channel from the air conditioner to the descending drainage channel can be made shorter and simpler. In addition, a descending drainage channel also exists near the windshield, and there are many things that may become obstacles when seeing outside from inside the cabin. On the other hand, since the windshield column is used for the descending drainage channel, the drainage channel can be simplified while minimizing obstacles to the line of sight.

[Effect] The drainage passage from the air conditioner to the windshield post is made short and simple to make the entire drainage passage as short and simple as possible, and the drainage from the air conditioner flows smoothly regardless of the inclination of the body. And can be obtained at a relatively low cost. In addition, the floton glass column was used for the descending drainage channel, making it easy to see from inside the cabin, making it easier to drive and see the work situation.

The structure, operation and effect of the invention according to claim 2 are as follows.

[Constitution] In the constitution according to the first aspect of the present invention, a drain hose extending from the air conditioner is connected to the windshield support.

[Operation] The drainage from the air conditioner surely and quickly flows into the windshield support, as compared with the case where the drainage from the air conditioner flows out onto the top plate and flows into the windshield support from the top plate. It flows out of the cabin.

[Effect] The drainage performance is further improved so that the air-conditioning drainage can be surely and quickly introduced into the windshield column so that the leakage can be prevented and the drainage can be quickly performed.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a crawler traveling unit 2 automatically controls a pre-cutting unit 1 which causes planted grain culms such as rice and wheat, cuts and transports the cut grain culms to the rear of the machine. A threshing device 5 for threshing the harvested culm from the pre-cutting processing unit 1 while being connected to the front of a traveling body having a driving unit 3 having an engine E and an operating cabin 4 and having an engine E, and threshing the harvested culm from the pre-cutting processing unit 1. The self-propelled body is provided with a grain tank 6 for storing the particles, and an unloading device 7 for unloading the grains from the grain tank 6 by a rotary screw, to constitute a combine.

As shown in FIG. 2, the engine E which drives the traveling device 2 and the threshing device 5 and the like, and a compressor 8 provided in the driving unit 3 in conjunction with the engine E
And a compressor 11 of the condenser unit 11 serving as an air conditioner is connected to the compressor 8 of the compressor unit 9 via a medium circulation path 10 and a medium circulation path 12
Evaporator 13a of evaporator unit 13 as an air conditioner
And a condenser 11a of the condenser unit 11 and an evaporator 13a of the evaporator unit 13 are connected by a medium circulation path 16 having a liquid receiver storage unit 14 and an expansion valve 15. They are connected to form an air conditioner. This air conditioner performs air conditioning of the driving cabin 4, and is configured in detail as follows.

As shown in FIG. 3, the condensing unit 11
Is installed at the rear end of the cabin on the top plate of the operating cabin 4, and the evaporator unit 13 is installed at the front end of the cabin on the top plate of the operating cabin 4. An accommodation room 18 for accommodating the condenser unit 11 and the evaporator unit 13 is formed by the top plate 4a of the operation cabin 4 and the air conditioner cover 17 located on the top plate.

As shown in FIGS. 3 and 4, the air conditioner cover 17 includes a top plate 17a and a front plate, a lateral plate, and a rear plate extending from the periphery of the top plate 17a. The top plate 17a is attached to the driving cabin 4 by tightening and connecting the top plate 17a to a mounting bracket 19 provided at the four corners on the upper surface side of the cabin top plate 4a with mounting bolts. As shown in FIGS. 3 and 5, when the air conditioner cover 17 is attached to the operation cabin 4, the rear end of the air conditioner cover 17 is located between the side wall portions 4 b of the operation cabin 4 and the cabin top plate 4 a. The air conditioner cover 17 and the operating cabin 4 projecting rearward
And a cabin downward opening 20 is formed between the evaporator unit 13 and the peripheral portion of the cabin top plate 4a and the accommodating chamber 18 into an accommodating unit of the evaporating unit 13 and an accommodating unit of the condensing unit 11. Partition wall member 2 provided in cabin top plate 4a
The weather strip 22 as a sealing material attached to the edge of the air conditioner 1 is pressed against the side plate of the air conditioner cover 17 and the inner surface of the top plate 17a as clearly shown in FIGS.
The space between the cabin top plate 4a and the air conditioner cover 17 and the space between the partition wall member 21 and the air conditioner cover 17 are sealed in most parts except the opening 20. As a result, the opening 20 becomes the intake port 20 of the accommodation chamber 18 which opens downward at the rear end of the accommodation chamber 18 at the rear end of the accommodation chamber 18, and the air conditioner cover 17 and the cabin top plate 4a connect the intake port 20 to the condenser unit. An air supply passage L communicating with the suction side of the evaporator 11 and the evaporator unit 13 is formed. The air supply passage L sucks the outside air of the cabin from the intake port 20 and supplies the air to the condenser unit 11 and the evaporator unit 13 by the blowing action of the electric rotating fans 11b and 13b of the condenser unit 11 and the evaporator unit 13, respectively. It is for doing. Further, the air supply passage L is connected to the partition wall member 2 with respect to the evaporator unit 13 located on the lower side in the air flow direction than the condenser unit 11.
1, and air is supplied through a through-hole 21a provided with an outside air filter 23. The intake port 20 is provided with a dust remover 24 made of a punched sheet metal supported by the cabin top plate 4a,
The dust remover 24 removes dust such as straw chips mixed into the air flowing into the air supply path L. The outside air filter 23 provided in the through hole 21a acts on the air flowing into the evaporator unit 13 from the through hole 21a, and removes dust such as straw chips mixed into the air.

As shown in FIGS. 3 and 4, an exhaust port 25 is provided at the rear end side of the top plate 17a of the air conditioner cover 17, and an elastic member connected to the exhaust pipe 11c of the condenser unit 11 is provided. The exhaust pipe 11c and the top plate 17a are sealed by a cylindrical body 26 such that the exhaust air from the exhaust pipe 11c flows out of the exhaust port 25 without leaking into the storage chamber 18. As a result, the exhaust port 25 becomes an exhaust port of the housing chamber 18 that opens upward in the body, which is a direction different from the intake port 20, on the top plate of the housing chamber 18 formed of the top board 17 a of the air conditioner cover 17. The air discharged from the unit 11 is discharged to the outside of the accommodation room 18.

The inside air filter 2 is provided on the downward surface of the cabin top plate 4a between the evaporator unit 13 and the condenser unit 11.
7 is formed. This inlet 28
Is located downstream of the condenser unit 11 and the outside air filter 23 of the air supply passage L, communicates with the intake side of the evaporator unit 13 through the air supply passage L, and evaporates the internal air of the operation cabin 4. It is possible to return to the device unit 13. The inside air filter 27 acts on the air flowing into the air supply path L so as to return to the evaporator unit 13, and removes dust mixed in the air. An air outlet 29 is formed on a downward surface portion of the cabin top plate 4a which is located slightly forward of the intake port 28 than the intake port 28. The air outlets 30 are respectively formed in the surface portions, and both the air outlets 29 and 30 are communicated with the exhaust side of the evaporator unit 13.

That is, the compressor unit 9 drives the compressor 8 by the engine E, and the compressor 8
Compresses the refrigerant. The compressed refrigerant is
The condenser 11a of the condenser unit 11 passes through the medium circulation path 10.
Flows into. The condensing unit 11 introduces the outside air of the cabin into the condenser 11a from the intake port 20 through the air supply path L as a cooling air by a blowing action of the rotating fan 11b to perform a cooling process of the refrigerant, thereby performing the cooling of the refrigerant. The hot air whose temperature has risen is discharged from the exhaust port 25 to the outside of the storage chamber 18. The cooling-processed refrigerant passes through the expansion valve 15 of the medium circulation path 16, and its temperature is reduced, and the evaporator 13 of the evaporator unit 13 is cooled.
flows into a. The evaporator unit 13 sucks the outside air of the cabin from the intake port 20 into the air supply path L by the blowing action of the fan 13b, and introduces the air inside the cabin into the evaporator 13a in a state where dust has been removed through the external air filter 23. The dust is removed from the plate intake port 28 through the inside air filter 27 and is sucked into the air supply path L to evaporate 13a.
The air from the outside of the cabin and the air from the inside of the cabin are combined and cooled, and the combined air whose temperature has dropped is sent into the cabin from the outlets 29 and 30. The refrigerant that has performed the cooling function of the air in the evaporator 13a of the evaporator unit 13 returns to the compressor 8 of the compressor unit 9 through the medium circulation path 12, and is compressed again. Thereby, the evaporator unit 13 circulates air inside the cabin between the operating cabin 4 and the evaporator unit 13 to cool the cabin, and cools the outside air of the cabin and sends it into the cabin for cooling. I do.

As shown in FIG. 2, a medium circulation path 32 having a water valve 31 is connected to the evaporator 13a of the evaporator unit 13. The medium circulation path 32 supplies the heat medium whose temperature has risen in the driving unit 3 to the evaporator 13a, returns the heat medium whose temperature has fallen in the evaporator 13a to the driving unit 3 and raises the temperature again. It is possible to feed warm air from the outlets 29 and 30 to the operation cabin 4 by the rotary fan 13b for heating.

As shown in FIG. 7A, the inside air filter 27 is provided around the intake port 28 around the cabin top plate 4a.
It is detachably attached to the lower surface side of the operating cabin 4 by being tightened with a mounting screw 33 so as to be detachable inside the operating cabin 4. The outside air filter 23 is mounted at a mounting position located directly above the air inlet 28, and in a mounting posture in which the upper end is inclined with respect to the cabin top plate 4a with the upper end closer to the evaporator unit 13 than the lower end. It is attached to the partition wall member 21. The side of the partition wall member 21 facing the intake port 28 is provided with a filter receiving portion 21b around the entire periphery of the through hole 21a. An abutting member 34 configured to be applied to the peripheral portion to prevent the outside air filter 23 from coming off from the filter receiving portion 21b is fastened to the partition wall member 21 by mounting bolts 35 located on both sides of the outside air filter 23. By connecting, the outside air filter 23 is removably attached to the side of the partition wall member 21 facing the intake port 28, and the outside air filter 23 can be removed inside the operation cabin 4 through the intake port 28. It is possible. That is, when performing cleaning or replacement of the inside air filter 27 and the outside air filter 23, the inside air filter 27 is detached from the inside of the operation cabin 4, and the outside air filter 23 is attached to the inside air filter 27 as shown in FIG.
Is removed from the inside of the driving cabin 4 through the intake port 28 from which the air is removed.

As shown in FIGS. 5 and 9, the liquid receiving unit 14 is mounted on the lateral side wall 4b of the operating cabin 4 near one of the left and right rear corners of the operating cabin 4. And the medium circulation paths 10, 1
The pipes forming the pipes 2 and 32 are arranged in the vicinity of the other rear corner of the two rear corners on the side wall 4b of the driving cabin 4 so as to pass along the vertical direction of the cabin. That is, the rear end portions of both lateral side walls 4b, 4b of the driving cabin 4 are bent so as to enter inside the driving cabin 4 in the left-right direction, so that the bent wall portion of the rear end portion of one of the side wall portions 4b is formed. On the outer surface side of the housing 4c, a device housing portion 36 which is long in the cabin vertical direction and whose upper end communicates with the housing room 18 inside the air conditioner cover 17 is formed.
The liquid receiving device section 14 is disposed such that the upper end side of the medium circulation path 16 connected to the storage chamber 18 enters the storage chamber 18. Then, the liquid receiving device section 1 is formed by a housing section cover 37 formed in an L-shaped cross section so as to cover the outer peripheral side of the apparatus housing section 36.
4 is covered. The bent wall portion 4c at the rear end of the other one of the two side walls 4b, 4b
On the outer surface side, a pipe housing portion 38 having a shape that is long in the vertical direction of the cabin and whose upper end communicates with the housing chamber 18 inside the air conditioner cover 17 and whose lower end opens downward in the cabin, is formed. In addition, the medium circulation paths 10 and 1
The pipes forming the pipes 2 and 32 are arranged so that the pipe accommodating section 38 is inserted vertically. An electric cord 39 for controlling the condenser unit 11 and the evaporator unit 13;
A drain hose 40 that discharges water formed on the cabin top plate 4a such as dehumidified water discharged from the evaporator unit 13 from the rear end side of the cabin top plate 4a also passes through the pipe housing unit 38 up and down. It is arranged in. And
The medium circulation path 10 and the medium circulation path 10,
12, 32, the electric cord 39, and the outer peripheral side of the drain hose 40 are covered.

As shown in FIGS. 3 and 9, the rear side wall 4d of the driving cabin 4 is made of a transparent plate located between the bent wall portions 4c of the left and right lateral side walls 4b.
Axle X in the lateral direction of the cabin located on the upper end side of rear wall 4d
By swinging around, the free end side rises outward from the driving cabin 4 and protrudes outward, and the free end side closes down between the bent wall portions 4c of the two side walls 4b, 4b. It is attached so that it can be opened and closed with the posture. The closing posture of the rear side wall 4d is set to the inclined posture shown in FIG. That is, the inclined position is set such that the upper end side is located on the front side of the cabin with respect to the intake port 20, and the lower end side is located on the rear side of the cabin with respect to the upper end side. Thus, the rear wall 4d when closed, forms a space for air to flow into the intake port 20 on the outer surface on the upper end side, and forms a cabin space as long as possible in the front-rear direction of the cabin on the lower end side.

As shown in FIG. 10, drain portions 13c are provided on both sides of the evaporator portion 13, and drain hoses 42 extending from the left and right drain portions 13c, 13c respectively.
The drainage structure having the above configuration is configured as shown in FIGS. 10 and 12, and drainage such as dehumidified water discharged from the evaporator 13 is discharged below the operation cabin 4. That is, each of the windshield columns 44 located on both lateral sides inside the windshield 43 of the driving cabin 4 is formed into a pipe column made of a round pipe material, and the pair of left and right drain hoses 42 extending from the evaporator unit 13 is formed. The drainage hose 42 on the left side of the pair is connected to the left windshield column 44 of the pair of front glass columns 43, 43.
The right drainage hose 42 of the pair of left and right drainage hoses 42 is connected to the upper end of the right windshield column 44 of the pair of front glass columns 44, 44. A drain hose 45 having an upper end connected to the lower end of each of the pair of windshield posts 44 is disposed inside the front wall portion of the operation cabin 4 so as to vertically pass therethrough.

That is, when the evaporator unit 13 discharges dehumidified water and the like from the discharge unit 13c in association with the air conditioning operation, the discharged water is introduced to the upper end side of the front glass support 44 by the drain hose 42, and the Freundt glass support is used. The inside of the drain 44 descends by its own weight, flows into the drain hose 45, and falls from the lower end of the drain hose 45 to the outside of the cabin.

The pair of Freundt glass columns 44, 4
4 is a first glass support piece 4 as shown in FIG.
6 and a second glass supporting piece 47 are provided on both upper and lower ends, and the glass supporting pieces 46 and 47 are used to control the front glass 4.
3 is supported. That is, the lateral end of the windshield main body 43a of the windshield 43 is fastened and connected to the upper and lower first glass support pieces 46, and the front end of the side glass portion 43b of the windshield 43 is connected to the upper and lower second glass support pieces. 47.

[Brief description of the drawings]

FIG. 1 is a side view of the entire combine.

FIG. 2 is a schematic diagram of an air conditioner.

FIG. 3 is a sectional view of an arrangement portion of a condensing unit and an evaporating unit.

FIG. 4 is a perspective view of an arrangement portion of a condensing unit and an evaporating unit.

FIG. 5 is a sectional view of an arrangement portion of the liquid receiving device section.

FIG. 6 is a sectional view of a cabin top plate and an air conditioner cover.

FIG. 7 is a sectional view of a portion where an outside air filter and an inside air filter are provided.

FIG. 8 is a perspective view of an outside air filter.

FIG. 9 is a rear view of the driving cabin.

FIG. 10 is a front view of a drainage structure of an evaporator unit.

FIG. 11 is a sectional view of a windshield support.

FIG. 12 is a side view of a drainage structure of an evaporator unit.

[Explanation of symbols]

 4 Operating Cabin 13 Evaporator 42 Drain Hose 44 Windshield Support

Claims (2)

[Claims] An air conditioner for an operating cabin is provided at a front end side of the cabin on a top plate of the operating cabin. A drainage structure for a working vehicle, wherein a windshield strut of the operating cabin is formed on a pipe strut, and the air conditioning is performed. A drainage structure for a work vehicle, wherein drainage from the machine is introduced to an upper end side of the windshield support, and the inside of the windshield support is lowered and discharged. 2. The drainage structure for a work vehicle according to claim 1, wherein a drainage hose extending from the air conditioner is connected to the windshield support.