JP7550061B2 - Work machine cabs and wheel loaders - Google Patents

Description

This disclosure relates to a work machine cab and a wheel loader.

A wheel loader with an air conditioning unit is disclosed, for example, in JP 2007-154444 A (Patent Document 1). In Patent Document 1, the entire air conditioning unit is located inside the driver's compartment (cab).

JP 2007-154444 A

In the configuration of Patent Document 1, the entire air conditioning unit is located inside the cab, so when replacing the blower motor included in the air conditioning unit, it is necessary to remove all of the indoor parts in front of the cab. This requires a lot of labor to maintain the air conditioning unit, making it difficult to maintain.

It is also possible to separate the blower included in the air conditioning system from the air conditioning system and place it outside the driver's cab. However, in this case, the ventilation path from the blower to the air outlet of the air conditioning system becomes longer, making it difficult to ensure sufficient air volume.

The objective of this disclosure is to provide a cab for a work machine and a wheel loader that allows easy maintenance of the air conditioning system and ensures sufficient airflow.

The cab of the work machine disclosed herein includes a floor plate, a driver's seat, and an air conditioning device. The floor plate has a lower surface. The driver's seat is disposed on the floor plate. The air conditioning device is disposed in front of the driver's seat. The air conditioning device includes a blower. The blower has an upper end located above the lower surface of the floor plate and a lower end located below the lower surface of the floor plate.

The wheel loader disclosed herein comprises the above-mentioned cab, a running body supporting the cab, and a work machine supported by the running body.

This disclosure makes it possible to realize a cab for a work machine and a wheel loader that allows for easy maintenance of the air conditioning system and ensures sufficient airflow.

1 is a schematic side view showing the configuration of a wheel loader as an example of a work machine in one embodiment. FIG. 2 is a side cross-sectional view showing the inside of the cab shown in FIG. 3 is an enlarged side cross-sectional view showing the configuration of the air conditioning apparatus shown in FIG. 2. 11 is a plan view showing the impeller of the blower seen through a through hole in a protruding portion of the floor plate. FIG. 5 is a cross-sectional view taken along line VV in FIG. 4.

The following describes an embodiment of the present disclosure with reference to the drawings.

In the specification and drawings, identical or corresponding components are given the same reference numerals and redundant explanations will not be repeated. In addition, in the drawings, configurations may be omitted or simplified for the convenience of explanation.

<Wheel loader configuration>
First, the configuration of a wheel loader as an example of a work machine in one embodiment of the present disclosure will be described with reference to FIG. 1 .

Note that this disclosure is applicable to work machines such as hydraulic excavators, bulldozers, and cranes in addition to wheel loaders. In the following description, "up," "down," "front," "rear," "left," and "right" refer to directions based on the operator seated in the driver's seat 5 in the cab 10.

In this specification, a side view refers to a viewpoint seen from the left and right with the operator seated in the driver's seat 5 as the reference. In addition, a plan view refers to a viewpoint seen from the top and bottom with the operator seated in the driver's seat 5 as the reference. The plan view is, for example, a viewpoint seen from a direction perpendicular to the upper surface 2U of the flat portion 2F of the floor plate 2 (Figure 2).

Figure 1 is a schematic side view showing the configuration of a wheel loader as an example of a work machine in one embodiment. As shown in Figure 1, the wheel loader 50 of this embodiment mainly has a cab 10, a front frame 11, a rear body 12, front wheels 13a, rear wheels 13b, and a work implement 20. Front wheels 13a are attached to each side of the front frame 11. Rear wheels 13b are attached to each side of the rear body 12.

The front frame 11 and rear body 12 are attached to each other by a center pin (not shown) so that they can be moved freely to the left and right. The front frame 11 and rear body 12 form an articulated structure.

Specifically, the front frame 11 and the rear body 12 are connected by a pair of left and right steering cylinders (not shown). When the pair of left and right steering cylinders expand and contract, the front frame 11 and the rear body 12 move left and right around a center pin and are steered. The running body of the wheel loader 50 is made up of the front frame 11, the rear body 12, the front wheels 13a, and the rear wheels 13b.

A working machine 20 is attached to the front of the front frame 11. The working machine 20 is supported by the running body of the wheel loader 50. The working machine 20 has a pair of booms 21, a bucket 22, and a pair of boom cylinders 23.

An engine compartment is located in the rear body 12. The engine compartment houses the engine unit (engine, exhaust treatment structure, etc.). The upper part of the engine compartment is covered by an engine hood 12a.

The cab 10 is located in front of the engine compartment (engine hood 12a). The cab 10 forms a space for an operator to enter and operate the wheel loader 50. The cab 10 is supported by the running body of the wheel loader 50. Inside the cab 10, a cab seat 5 is located for the operator to sit in.

<Configuration of the operator's cab 10>
Next, the configuration of the operator's cab 10 will be described with reference to FIG.

Figure 2 is a side cross-sectional view showing the inside of the cab shown in Figure 1. As shown in Figure 2, the cab 10 of this embodiment mainly has an air conditioning unit 1, a floor plate 2, a plurality of pillars 3a, 3b, a roof portion 4, a driver's seat 5, a front console 6, a steering wheel 7, and an operating pedal 8.

The multiple pillars 3a, 3b are attached to the floor plate 2 and rise upward from the floor plate 2. The multiple pillars 3a, 3b include, for example, a pair of left and right front pillars 3a and a pair of left and right rear pillars 3b.

A beam member (not shown) is connected to the upper end of each of the front pillars 3a and the rear pillars 3b. The roof portion 4 is connected to this beam member and is disposed above the driver's cab 10.

Between the pair of left and right front pillars 3a, for example, a front window FW and a front panel FP are arranged. Between the pair of left and right rear pillars 3b, for example, a rear window RW and a rear panel RP are arranged. Between the front pillars 3a and the rear pillars 3b, for example, a side window SW is arranged. The front panel FP and the rear panel RP are exterior panels. Each of the front window FW, rear window RW and side window SW has a transparent member made of, for example, glass.

The space surrounded by the floor plate 2, the multiple pillars 3a, 3b, the roof portion 4, the windows FW, RW, SW, and the exterior panels FP, RP constitutes the interior space of the cab 10. The interior space of the cab 10 is separated from the exterior space of the cab 10 by the floor plate 2, the multiple pillars 3a, 3b, the roof portion 4, the windows FW, RW, SW, and the exterior panels FP, RP.

A driver's seat 5 is arranged in the interior space of the driver's cab 10. The driver's seat 5 is located on the floor plate 2 and below the roof portion 4.

The air conditioning unit 1, front console 6, steering wheel 7, and operation pedals 8 are each disposed in front of the driver's seat 5. The front console 6, steering wheel 7, and operation pedals 8 are each disposed on the floor plate 2 in the internal space of the driver's cab 10. The air conditioning unit 1 is disposed below the front console 6, in front of the steering wheel 7 and operation pedals 8.

The floor plate 2 has a flat portion 2F and a convex portion 2P. The flat portion 2F has a flat plate shape. The flat portion 2F has an upper surface 2U and a lower surface 2L that face each other. The upper surface 2U is located in the interior space of the driver's cab 10, and the lower surface 2L is located in the exterior space of the driver's cab 10. In this specification, the upper surface 2U and the lower surface 2L of the flat portion 2F are also referred to as the upper surface 2U and the lower surface 2L of the floor plate 2, respectively.

The rear panel RP is provided with an outside air intake 10a. The outside air intake 10a penetrates the rear panel RP and is, for example, made up of a number of slits 10aa. The outside air intake 10a is, for example, located behind the seat of the driver's seat 5.

The air conditioning unit 1 takes in air sucked from the outdoor air intake port 10a through the outdoor duct 9a and the indoor duct 9b. The outdoor duct 9a is connected to the air conditioning unit 1. The outdoor duct 9a is located outside the driver's cab 10 and below the floor plate 2. The outdoor duct 9a is connected to the indoor duct 9b. This connects the ventilation path of the outdoor duct 9a and the ventilation path of the indoor duct 9b to each other.

The indoor duct 9b is located on the floor plate 2 in the interior space of the cab 10. The indoor duct 9b is attached to the rear panel RP so that it is connected to the outside air intake 10a provided in the rear panel RP. This allows the ventilation path of the indoor duct 9b to be connected to the outside space of the cab 10 through the outside air intake 10a.

<Configuration of Air Conditioning Apparatus 1>
Next, the configuration of the air conditioning device 1 will be described with reference to FIG.

Figure 3 is an enlarged cross-sectional side view of the configuration of the air conditioner shown in Figure 2. As shown in Figure 3, the air conditioner 1 has, for example, a blower 1a, an evaporator 1b, a heater core 1c, and a case 1d.

The blower 1a takes in the inside air and outside air of the cab 10 into the air conditioning device 1, sends it to the evaporator 1b (or the evaporator 1b and the heater core 1c), and then sends it out into the interior space of the cab 10. The evaporator 1b cools the air sent from the blower 1a. The heater core 1c warms the air sent from the blower 1a. The air conditioning device 1 conditions the air in the interior space of the cab 10.

The blower 1a is, for example, a blower. The blower 1a has an impeller 1aa, a driving source 1ab, and a case 1ac. The driving source 1ab is, for example, a motor. The rotating shaft RS of the driving source 1ab is fixed to the impeller 1aa. The driving force of the driving source 1ab is transmitted to the impeller 1aa via the rotating shaft RS. This causes the impeller 1aa to rotate, and the inside air of the cab 10 and the outside air are taken into the air conditioning device 1.

The impeller 1aa and the driving source 1ab of the blower 1a are housed inside the case 1ac. The case 1ac is connected to the outdoor duct 9a. This allows the blower 1a to take in air from outside the cab 10 through the outdoor air suction port 10a (Figure 2), the indoor duct 9b (Figure 2), and the indoor duct 9a.

The evaporator 1b and heater core 1c are housed inside the case 1d. The case 1d has air outlets 1da and 1db at the top. The air outlets 1da and 1db are sections that blow out the air conditioned by the air conditioner 1 to the outside of the air conditioner 1. Each of the air outlets 1da and 1db penetrates the case 1d and connects the ventilation path inside the case 1d to the ventilation path outside the case 1d.

An evaporator 1b and a heater core 1c are arranged in the ventilation path in the case 1d. In the ventilation path in the case 1d, the evaporator 1b is arranged upstream of the heater core 1c. The ventilation path in the case 1d has a first path in which the air after passing through the evaporator 1b passes through the heater core 1c and reaches the outlets 1da, 1db, and a second path in which the air reaches the outlets 1da, 1db without passing through the heater core 1c. A switching device SD is provided to switch the path of the air after passing through the evaporator 1b between the first path and the second path.

The heater core 1c is disposed above the evaporator 1b. In a plan view, the entire heater core 1c is disposed so as to overlap the evaporator 1b. In a side view, the evaporator 1b and the heater core 1c are each inclined downward from the front to the rear.

In a side view, the inclination angle α1 of the evaporator 1b relative to the upper surface 2U of the flat portion 2F is greater than the inclination angle α3 of the heater core 1c relative to the upper surface 2U of the flat portion 2F. Each of the inclination angles α1 and α3 is an acute angle.

The inclination angle α1 is, for example, the angle between the bottom surface of the evaporator 1b and the top surface 2U of the flat portion 2F. The inclination angle α3 is, for example, the angle between the bottom surface of the heater core 1c and the top surface 2U of the flat portion 2F.

Case 1ac is located below floor plate 2. Case 1ac is attached to the lower surface 2L of floor plate 2. Case 1d is located above floor plate 2. Case 1d is attached to the upper surface 2U of flat portion 2F.

The convex portion 2P of the floor plate 2 protrudes upward from the flat portion 2F. The convex portion 2P is provided in the portion of the floor plate 2 where the cases 1ac and 1d are attached. The convex portion 2P is sandwiched between the cases 1ac and 1d in the vertical direction.

At least a portion of the blower 1a is disposed in the space protruding above the protrusion 2P. The blower 1a has an upper end UE located above the lower surface 2L of the floor plate 2. The blower 1a has a lower end LE located below the lower surface 2L of the floor plate 2.

<Configuration of protruding portion 2P of floor plate 2>
Next, the configuration of the protrusion 2P of the floor plate 2 will be described with reference to FIGS.

Figure 4 is a plan view showing the impeller of the blower as seen through a through hole in the protruding portion of the floor plate. Figure 5 is a cross-sectional view taken along line V-V in Figure 4.

As shown in FIG. 3, the protruding portion 2P has an upper end portion 2Pa, an inclined portion 2Pb, and a side portion 2Pc. The upper end portion 2Pa is located above the flat portion 2F of the floor plate 2 and extends in a direction parallel to the flat portion 2F.

The side portion 2Pc rises upward from the flat portion 2F. The side portion 2Pc extends in a direction approximately perpendicular to the upper surface 2U of the flat portion 2F. The lower end of the side portion 2Pc is connected to the flat portion 2F. The upper end of the side portion 2Pc is connected to the front end of the upper end portion 2Pa.

The inclined portion 2Pb rises upward from the flat portion 2F. The inclined portion 2Pb slopes downward from the front to the rear. The rear end (lower end) of the inclined portion 2Pb is connected to the flat portion 2F. The front end (upper end) of the inclined portion 2Pb is connected to the rear end of the upper end portion 2Pa.

In a side view, it is preferable that the inclination angle α2 of the inclined portion 2Pb relative to the upper surface 2U of the flat portion 2F is approximately the same as the inclination angle α1 of the evaporator 1b relative to the upper surface 2U of the flat portion 2F. The inclination angle α2 is an acute angle. The inclination angle α2 is, for example, the angle between the upper surface of the inclined portion 2Pb and the upper surface 2U of the flat portion 2F.

The upper end 2Pa is provided with one through hole TH. The through hole TH penetrates the upper end 2Pa. The through hole TH is a hole for passing air sent by the blower 1a from the outside to the inside of the cab 10. The air that passes through the through hole TH and enters the inside of the cab 10 from the outside passes through the evaporator 1b.

As shown in FIG. 4, the blower 1a has, for example, two impellers 1aa. The two impellers 1aa are arranged so as to sandwich the driving source 1ab in the left-right direction. Each of the two impellers 1aa is connected to the rotation shaft RS of the driving source 1ab. The rotation shaft RS connected to one of the two impellers 1aa and the rotation shaft RS connected to the other of the two impellers 1aa are arranged on the same axis so as to be concentric. Each of the two rotation shafts RS extends in the left-right direction.

The through hole TH has, for example, a rectangular shape in a plan view. Specifically, the through hole TH has a rectangular shape that is long in the direction in which the two impellers 1aa and the driving source 1ab are arranged (left-right direction) and short in the front-rear direction in a plan view.

The through hole TH overlaps both the driving source 1ab and the impeller 1aa in a plan view. Specifically, one through hole TH overlaps the driving source 1ab and two impellers 1aa in a plan view. In a plan view, at least the entire rotor of the driving source 1ab and the entire two impellers 1aa are located within the range of one through hole TH.

The left-right dimension W1 of the through hole TH in plan view is greater than the dimension W2 obtained by adding up the left-right dimensions of each of the two impellers 1aa and the driving source 1ab. In plan view, there is a gap of dimension WS between the left-right edge of the through hole TH and the left-right edge of the impeller 1aa.

The dimension L1 of the through hole TH in the front-to-rear direction in a plan view is greater than the dimension L2 of the impeller 1aa in the front-to-rear direction.

The inclined portion 2Pb is connected to the entire left-right area of the rear end of the upper end portion 2Pa. The side portion 2Pc is connected to the entire left-right area of the front end of the upper end portion 2Pa.

As shown in FIG. 5, the upper end UE of the blower 1a is located above the height position P1 of the lower surface 2L of the floor plate 2. The upper end UE of the blower 1a is the upper end of the case 1ac.

At least a portion of the blower 1a is located within the internal space of the convex portion 2P, so that the upper end UE of the blower 1a is located within the internal space of the convex portion 2P. The internal space of the convex portion 2P is the space that protrudes above the flat portion 2F of the floor plate 2 by the convex portion 2P, and refers to the space between the height position P1 of the lower surface 2L of the flat portion 2F and the height position of the lower surface of the upper end portion 2Pa. The upper end UE of the blower 1a may be located within the through hole TH, or in some cases may be located above the through hole TH.

At least a part of the impeller 1aa and at least a part of the driving source 1ab are located above the height position P1 of the lower surface 2L of the floor plate 2, and are located within the internal space of the convex portion 2P. The height position P2U of the upper end of the impeller 1aa is located above the height position P1 of the lower surface 2L of the floor plate 2, and is located within the internal space of the convex portion 2P. The height position P3U of the upper end of the driving source 1ab is located above the height position P1 of the lower surface 2L of the floor plate 2, and is located within the internal space of the convex portion 2P. If the driving source 1ab is, for example, a motor, a part of the stator included in the motor is located above the height position P1 of the lower surface 2L of the floor plate 2, and is located within the internal space of the convex portion 2P.

At least a portion of the blower 1a is located outside the internal space of the protrusion 2P. The lower end LE of the blower 1a is located outside the internal space of the protrusion 2P and is located below the lower surface 2L of the floor plate 2.

At least a part of the impeller 1aa and at least a part of the drive source 1ab are located below the height position P1 of the lower surface 2L of the floor plate 2 and are located outside the internal space of the convex portion 2P. The height position P2L of the lower end of the impeller 1aa is located below the height position P1 of the lower surface 2L of the floor plate 2 and is located outside the internal space of the convex portion 2P. The height position P3L of the lower end of the drive source 1ab is located below the height position P1 of the lower surface 2L of the floor plate 2 and is located outside the internal space of the convex portion 2P.

The rotation axis RS is located below the height position P1 of the lower surface 2L of the floor plate 2 and is located outside the internal space of the protrusion 2P. The rotation axis RS may be located above the height position P1 of the lower surface 2L of the floor plate 2 and located within the internal space of the protrusion 2P.

The upper end of the blower 1a is located above the upper surface 2U of the flat portion 2F, and the lower end of the blower 1a is located below the lower surface 2L of the flat portion 2F. As a result, the blower 1a is arranged so as to intersect with the extension direction of the flat portion 2F of the floor plate 2. Each of the two impellers 1aa and the driving source 1ab is arranged so as to intersect with the extension direction of the flat portion 2F of the floor plate 2.

<Installation status of air conditioner>
Next, the mounting state of the air conditioning device 1 in this embodiment will be described with reference to FIG.

As shown in FIG. 3, the case 1d of the air conditioning unit 1 is attached to the upper surface 2U of the flat portion 2F by a fastening member (e.g., a screw member). The case 1d only needs to be disposed on the upper surface of the floor plate 2 so that it can be freely attached and detached, and may also be attached to the protruding portion 2P.

On the other hand, the case 1ac of the blower 1a is attached to the underside 2L of the floor plate 2 by a fastening member (e.g., a screw member, etc.). The case 1ac only needs to be arranged so as to be freely attached and detached to the underside of the floor plate 2, and may be attached to the protrusion 2P.

Case 1ac and case 1d are made up of different parts and are separable from each other. Therefore, case 1ac and case 1d can be attached to and detached from floor plate 2 separately from each other.

Case 1d is located above floor plate 2 and in the interior space of cab 10. Therefore, in order to remove case 1d from floor plate 2, it is necessary to remove it from the interior space of cab 10.

On the other hand, the case 1ac of the blower 1a is disposed below the floor plate 2. Therefore, the case 1ac can be removed from below the floor plate 2. In other words, the blower 1a can be removed from outside the cab 10, and there is no need to remove it from the interior space of the cab 10.

When the air conditioning unit 1 is attached to the floor plate 2, the evaporator 1b is located directly above the through hole TH. The evaporator 1b is positioned so as to overlap the through hole TH in a plan view. Therefore, when the blower 1a is removed from the floor plate 2, the evaporator 1b can be easily cleaned from below the floor plate 2 through the through hole TH.

＜Effects＞
Next, the effects of this embodiment will be described.

According to this embodiment, as shown in FIG. 3, the blower 1a has an upper end UE that is located above the lower surface 2L of the floor plate 2. Therefore, compared to a case in which the upper end UE of the blower 1a is located below the lower surface 2L of the floor plate 2, the blower 1a can be positioned closer to the air outlets 1da, 1db of the air conditioning device 1. This shortens the ventilation path from the blower 1a to the air outlets 1da, 1db, making it possible to increase the amount of air blown out from the air outlets 1da, 1db.

Furthermore, the blower 1a has a lower end LE that is located below the lower surface 2L of the floor plate 2. This allows the blower 1a to be replaced from below the floor plate 2. This makes it easier to perform maintenance since it is not necessary to remove parts from the interior space of the cab 10 when replacing the blower 1a.

As described above, this embodiment makes it easy to maintain the air conditioning unit 1 and ensure air volume.

Furthermore, according to this embodiment, as shown in FIG. 3, the floor plate 2 has a flat portion 2F having a lower surface 2L, and a protruding portion 2P protruding upward from the flat portion 2F. The upper end UE of the blower 1a is located inside the protruding portion 2P. This shortens the ventilation path from the blower 1a to the air outlets 1da and 1db, making it possible to increase the amount of air blown out from the air outlets 1da and 1db.

In addition, according to this embodiment, as shown in FIG. 3, the evaporator 1b is inclined downward from the front to the rear. This allows the front-to-rear dimension of the space occupied by the evaporator 1b to be shorter than when the evaporator 1b extends in the front-to-rear direction without being inclined. This allows the front-to-rear size of the air conditioning device 1 having the evaporator 1b to be reduced, creating more space in the front of the interior space of the cab 10.

In addition, according to this embodiment, as shown in FIG. 3, the protruding portion 2P has an inclined portion 2Pb that slopes downward from the front to the rear. This allows the inclined portion 2Pb to avoid interference with the evaporator 1b and expand the internal space of the protruding portion 2P, compared to when the inclined portion 2Pb is upright.

In addition, according to this embodiment, as shown in FIG. 4, the floor plate 2 has one through hole TH that overlaps both the driving source 1ab and the impeller 1aa in a plan view. In this way, one through hole TH is provided large enough to overlap both the driving source 1ab and the impeller 1aa, so that cleaning and maintenance of the inside of the cab 10 can be easily performed through the through hole TH after removing the blower 1a.

For example, if the evaporator 1b becomes clogged, the air volume and performance of the blower 1a will decrease. This makes it necessary to clean the evaporator 1b. However, removing the evaporator 1b from the cab 10 in order to clean it requires a lot of work.

In contrast, in this embodiment, a large through hole TH is provided in the floor plate 2 as described above. This makes it easy to clean the evaporator 1b from below the floor plate 2 through the through hole TH without removing the evaporator 1b from the driver's cab 10. This reduces the amount of work required to clean the evaporator 1b, improving the cleanability of the evaporator 1b.

In addition, according to this embodiment, as shown in FIG. 5, at least a portion of the impeller 1aa is disposed within the protruding portion 2P. This shortens the ventilation path from the impeller 1aa to the air outlets 1da and 1db, making it possible to increase the amount of air blown out from the air outlets 1da and 1db.

In this embodiment, the floor plate 2 has a convex portion 2P, but the floor plate 2 does not have to have a convex portion 2P. In this case, for example, the floor plate 2 may have a blower through hole, and the blower 1a may be attached to the cab 10 with the blower 1a inserted into the blower through hole. When the blower 1a is inserted into the blower through hole, it is sufficient that the upper end UE of the blower 1a is located above the lower surface 2L of the floor plate 2, and the lower end LE of the blower 1a is located below the lower surface 2L of the floor plate 2. In this state, it is sufficient that the blower 1a is configured to be attached to and detached from the cab 10 from below the floor plate 2.

The entire impeller 1aa and the driving source 1ab may be disposed within the internal space of the protruding portion 2P. If the driving source 1ab is a motor, the entire rotor of the motor may be disposed within the internal space of the protruding portion 2P.

In addition, the material of the transparent members used for the front window FW, rear window RW, and side window SW is not limited to glass, but may be other transparent materials such as acrylic.

The embodiments disclosed herein are illustrative in all respects and should not be considered limiting. The scope of the present invention is indicated by the claims, not by the above description, and is intended to include all modifications within the meaning and scope of the claims.

1 air conditioning device, 1a blower, 1aa impeller, 1ab drive source, 1b evaporator, 1c heater core, 1ac, 1d case, 1da, 1db air outlet, 2 floor plate, 2F flat portion, 2L lower surface, 2P convex portion, 2Pb, IS1, IS2 inclined portion, 2Pc side portion, 2U upper surface, 3a front pillar, 3b rear pillar, 4 roof portion, 5 driver's seat, 6 front console, 7 steering, 8 operation pedal, 9a outdoor duct, 9b indoor duct, 10 driver's cab, 10a outdoor air intake port, 10aa slit, 11 front frame, 12 rear body, 12a engine hood, 13a front wheel, 13b rear wheel, 20 work machine, 21 boom, 22 bucket, 23 Boom cylinder, 50 wheel loader, FP front panel, FW front window, LE bottom end, RP rear panel, RW rear window, SD switching device, SG side glass, SP side panel, SW side window, TH through hole, UE top end.

Claims (7)

a floor plate having a lower surface;
A driver's seat disposed on the floor plate;
An air conditioning device disposed in front of the driver's seat,
The air conditioning device includes a blower,
A cab of a work machine, wherein the blower has an upper end located above the lower surface of the floor plate and a lower end located below the lower surface of the floor plate. the floor plate includes a flat portion having the lower surface and a convex portion protruding upward from the flat portion,
The cab of a work machine according to claim 1 , wherein the upper end of the blower is located inside the protrusion. The air conditioning device includes an evaporator,
The cab of a work machine according to claim 2 , wherein the evaporator is inclined downward from the front to the rear. The cab of a work machine according to claim 3, wherein the convex portion has an inclined portion that slopes downward from the front to the rear. The blower includes a drive source and an impeller adjacent to the drive source,
The cab of a work machine according to claim 2 , wherein the floor plate has one through hole that overlaps both the driving source and the impeller in a plan view. The cab of a work machine according to claim 5, wherein at least a portion of the impeller is disposed within the protruding portion. A cab according to any one of claims 1 to 6;
A traveling body supporting the driver's cab;
a working machine supported on the traveling body.

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