JP2019214341A - Working machine - Google Patents

Abstract

To allow a foot lamp to be smoothly turned off.SOLUTION: The working machine comprises: a motor; a cabin having a door whose doorway can be opened and closed; an opening/closing detection device that detects opening or closing of the door; a doorway step mounted on a position corresponding to the doorway, at a lateral side the cabin; a foot lamp that can illuminate the doorway step; and an illumination control device that switches the foot lamp from turned-on state into turned-off state, from a reference timing: first timing at which the motor stops and second timing at which the opening/closing detection device detects opening of the door, whichever is later.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a working machine such as a tractor.

  BACKGROUND ART Conventionally, a working machine disclosed in Patent Document 1 is known as a working machine having a foot. The work machine disclosed in Patent Literature 1 is provided with an auxiliary step for getting on and off near the entrance and exit, and a light for illuminating the upper and lower sides is provided on a step portion of the auxiliary step.

JP 2011-31712 A

In the conventional working machine, when a worker gets off from the entrance, the light can illuminate the auxiliary step. The light is turned on when the door is opened, and is turned off after a certain period of time. However, since the work machine may get on and off in various situations, the timing of turning off the foot light may not be good.
The present invention has been made in order to solve the above-described problems of the related art, and has as its object to provide a working machine that can smoothly turn off a foot light.

The technical means of the present invention for solving this technical problem has the following features.
The work machine has a motor, a cabin having a door capable of opening and closing a door, an opening / closing detection device for detecting opening or closing of the door, and a side of the cabin and attached to a position corresponding to the door. The step of getting on and off, the step light capable of illuminating the step of getting on and off, and a reference time point which is later of a first time point at which the motor stops and a second time point at which the opening / closing detection device detects opening of the door, An illumination control device that switches the foot light from on to off after a predetermined time.

The lighting control device turns on the foot light when the foot light turns off and the open / close detection device detects that the door is open from the state in which the open / close detection device detects that the door is closed. I do.
The lighting control device is configured such that when the footlight is turned off and the opening / closing detection device detects that the door is closed, the opening / closing detection device detects opening of the door and the prime mover is driven. Turn on the light.

The work machine includes a PTO shaft that is rotated by the power of the prime mover, and a work device that is driven by the power of the rotation of the PTO shaft.
The work machine includes an external PTO switch for instructing the start or stop of rotation of the PTO shaft, and the lighting control device controls the footlight when a command to start or stop rotation is issued by the external PTO switch. Is turned on, and after a predetermined time, the foot light is switched from on to off.

  The step of getting on and off includes fixing a front support portion attached to the cabin, a rear support portion attached to the cabin and disposed behind the support portion, and a front support portion and a rear support portion. A step portion, and is provided above the step portion and between the front support portion and the rear support portion.

  According to the present invention, the foot light can be smoothly turned off.

It is a figure showing a block diagram of a transmission and a control device of a tractor. It is a figure showing a cabin etc. It is the perspective view which looked at the step and the foot light from the outside. It is the perspective view which looked at the step and the step light from the inside. It is explanatory drawing explaining the direction of the light of a step light. It is an example which shows operation | movement of a step light, a door, and an ignition switch. It is another example which shows operation | movement of a step light, a door, and an ignition switch. It is another example which shows operation | movement of a step light, a door, and an ignition switch. It is the whole tractor side view.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The working machine is an agricultural machine such as a tractor, a combine, or a rice transplanter. The tractor 1 which is one of the agricultural machines will be described as an example.
As shown in FIG. 7, the tractor 1 includes a traveling vehicle (body) 3 having a traveling device 7, a motor 4, and a transmission 5. The traveling device 7 is a device having front wheels and rear wheels. The traveling device 7 may be a crawler type device. The prime mover 4 is a diesel engine, an electric motor, or the like, and in this embodiment, is configured by a diesel engine. The transmission 5 can switch the propulsion force of the traveling device 7 by changing the speed, and can switch the traveling device 7 between forward and reverse.

  At the rear of the vehicle body 3, there is provided a connecting portion 8 constituted by a three-point link mechanism or the like. The working device 2 is detachable from the connecting portion 8. By connecting the working device 2 to the connecting portion 8, the working device 2 can be pulled by the vehicle body 3. The working device 2 includes a tillage device for plowing, a fertilizer spraying device for spraying fertilizer, a pesticide spraying device for spraying pesticides, a harvesting device for harvesting, a cutting device for cutting grass and the like, a diffusion device for spreading grass and the like, A grass collecting device for collecting grass and the like, a forming device for forming grass and the like, and the like. FIG. 7 shows an example in which a tilling device is attached as the working device 2.

The tractor 1 includes a driver's seat 10 provided on the vehicle body 3 and a control device 11. The driver's seat 10 and the control device 11 are arranged in a cabin 12 provided in the traveling vehicle 3. The steering device 11 includes, for example, a steering and the like, and can change the traveling direction of the tractor 1 by steering the steering device 11.
As shown in FIG. 1, the transmission 5 includes a main shaft (propulsion shaft) 5a, a main transmission unit 5b, an auxiliary transmission unit 5c, a shuttle unit 5d, and a PTO power transmission unit 5e. The propulsion shaft 5a is rotatably supported by a housing case of the transmission 5, and power from a crankshaft of the prime mover 4 is transmitted to the propulsion shaft 5a. The main transmission unit 5b has a plurality of gears and a shifter that changes the connection of the gears. The main transmission unit 5b changes and outputs (shifts) the rotation input from the propulsion shaft 5a by appropriately changing the connection (engagement) of the plurality of gears with a shifter.

The auxiliary transmission unit 5c has a plurality of gears and a shifter that changes the connection of the gears, similarly to the main transmission unit 5b. The subtransmission unit 5c changes and outputs (shifts) the rotation input from the main transmission unit 5b by appropriately changing the connection (engagement) of the plurality of gears with a shifter.
The shuttle unit 5d has a shuttle shaft 12 and a forward / reverse switching unit 13. The power output from the auxiliary transmission unit 5c is transmitted to the shuttle shaft 12 via gears or the like. The forward / reverse switching unit 13 is constituted by, for example, a hydraulic clutch or the like, and switches the rotation direction of the shuttle shaft 12, that is, the forward and backward movements of the tractor 1 by turning on / off the hydraulic clutch.

  The PTO power transmission unit 5e has a PTO propulsion shaft 20 and a PTO clutch 21. The PTO propulsion shaft 20 is rotatably supported, and can transmit power from the propulsion shaft 5a. The PTO propulsion shaft 20 is connected to the PTO shaft 16 via a gear or the like. The PTO clutch 21 is a clutch that can be switched between a first operation for transmitting the power of the propulsion shaft 5a to the PTO propulsion shaft 20 and a second operation for not transmitting the power of the propulsion shaft 5a to the PTO propulsion shaft 20. More specifically, the PTO clutch 21 is constituted by a hydraulic clutch, and a housing 21a that can rotate integrally with the PTO propulsion shaft 20, a clutch member 21b that can rotate integrally with the propulsion shaft 5a, and moves in the housing 21a by hydraulic oil. And a free piston 21c.

Therefore, if the piston 21c is moved and the clutch member 21b is joined to the housing 21a, the PTO clutch 21 shifts to the first operation, and the power from the prime mover 4 is propelled through the propulsion shaft 5a and the PTO clutch 21. Transmitted to the shaft 20 and the PTO propulsion shaft 20
Is transmitted to the PTO shaft 16. That is, the PTO shaft 16 is driven by the power of the prime mover 4 via the transmission 5. On the other hand, if the piston 21c is moved to disengage the clutch member 21b from the housing 21a, the PTO clutch 21 shifts to the second operation, and the power of the propulsion shaft 5a is not transmitted to the PTO propulsion shaft 20, and the propulsion shaft 5a Power is cut off.

  The transmission (connection) or disconnection of power by the PTO clutch 21 is performed by a PTO switch provided near the driver's seat 10 or the like. For example, when the PTO switch is turned on, the solenoid of the operating valve (electromagnetic valve) 17 connected to the piston 21c via an oil passage is excited, and the PTO clutch 21 is connected. When the PTO switch is turned off, the solenoid of the operating valve (electromagnetic valve) 17 is demagnetized, and the PTO clutch 21 is disconnected.

FIG. 2 is a diagram showing the cabin 12. In FIG. 2, arrow A1 indicates the front, arrow A2 indicates the rear, arrow B1 indicates the left, and arrow B2 indicates the right.
2, the cabin 12 includes a roof 50, a plurality of front supports 51, a plurality of intermediate supports 52, a plurality of rear supports 53, a connection frame 54, a front panel 55, a rear panel 56, and a door panel. 57. The roof 50 is a member constituting a ceiling of the cabin 12 and is supported by a plurality of front supports 51, a plurality of intermediate supports 52, a plurality of rear supports 53, and a connection frame 54.

The plurality of front supports 51 include a first front support 511 and a second front support 512. The first front support 511 and the second front support 512 extend upward. The first front support 511 and the second front support 512 are arranged apart from each other in the width direction of the fuselage 2, the first front support 511 is located at the left front end, and the second front support 512 is at the right front end. It is located in.
The plurality of intermediate supports 52 are disposed between the plurality of front supports 51 and the plurality of rear supports 53, and include a first intermediate support 521 and a second intermediate support 522. The first intermediate support 521 and the second intermediate support 522 extend upward. The first intermediate support 521 and the second intermediate support 522 are arranged apart from each other in the width direction of the fuselage 2, the first intermediate support 521 is located at the left intermediate portion, and the second intermediate support 522 is at the right intermediate position. Located in the department.

  The plurality of rear supports 53 are located behind the plurality of intermediate supports 52 and include a first rear support 531 and a second rear support 532. The first rear support 531 and the second rear support 532 extend upward. The first rear support 531 and the second rear support 532 are arranged apart from each other in the width direction of the fuselage 2, the first rear support 531 is located at the left rear, and the second rear support 532 is at the right rear. positioned.

  The connection frame 54 is a frame that connects the front support 51, the intermediate support 52, and the rear support 53, and has an upper connection frame 54a and a lower connection frame 54b. The upper connection frame 54a connects the upper ends of the first front support 511, the second front support 512, the first intermediate support 521, the second intermediate support 522, the first rear support 531, and the second rear support 532. I have. The lower connecting frame 54b connects the lower ends of the first front support 511, the second front support 512, the first intermediate support 521, the second intermediate support 522, the first rear support 531, and the second rear support 532. I have.

The front panel 55 is fixed to the plurality of front supports 51 (first front supports 511 and second front supports 512), the connection frame 54, and the roof 50. The rear panel 56 is surrounded by a plurality of rear supports 53 (first rear supports 531, second rear supports 532), the connection frame 54 and the roof 50.
The portion surrounded by the first front support column 511, the first intermediate support column 521, and the connection frame 54 (the upper connection frame 54a and the lower connection frame 54b) forms an entrance 63 for an operator to get on and off. The door panel 57 is a member that closes the entrance 63 so that it can be opened and closed. The door panel 57 is supported by a hinge 58 attached to the rear side of the entrance 63 (the front side of the intermediate column 52). The hinge 58 supports the door panel 57 so that it can be opened and closed.

An entry / exit step 41 is provided on the lower side of the cabin 12, that is, at a portion corresponding to the entrance 63.
As shown in FIGS. 3 to 5, the getting on / off step 41 includes a front support portion 41 a attached to the cabin 12 and a rear support portion 4 attached to the cabin 12 and arranged behind the front support portion 41 a.
1b, and a step portion 41c fixed across the front support portion 41a and the rear support portion 41b.

Specifically, the front support portion 41a is a plate material, and the upper end of the front support portion 41a is attached to the lower end of the first front support 511 by a fastener 90 such as a bolt or a nut. The rear support portion 41b is a plate material, and the upper end of the rear support portion 41b is welded to the lower frame 54b1 that forms the lower side of the entrance 63 in the lower connection frame 54b.
More specifically, the rear support portion 41b has a first rear plate portion 41b1, a second rear plate portion 41b2, and a third rear plate portion 41b3. The upper end of the first rear plate portion 41b1 is welded to the lower frame 54b1, and a mounting bracket 93 is attached to the upper end portion with a fastener 90. The upper end of the second rear plate portion 41b2 is attached to the first rear plate portion 41b1 by a fastener 90, and the lower end is attached to the third rear plate portion 41b3 by welding.

The step portion 41c is a member formed by forming a plate material into a rectangular shape, and has a non-slip 91 formed on the upper surface. The front end of the step portion 41c is attached to the lower end of the front support portion 41a, and the rear end is attached to the lower end of the third rear plate portion 41b3.
A cover 95 is attached to the getting on / off step 41. The cover 95 is a member formed by bending a plate material, and is disposed between the lower frame 54b1 and the step portion 41c. The cover 95 has a front wall 95a, an intermediate wall 95b, and a rear wall 95c. The front wall portion 95a is attached to the front support portion 41a, and extends from the front support portion 41a to the inside of the body. The intermediate wall portion 95b is formed continuously from the front wall portion 95a, and extends rearward from an inner end of the front wall portion 95a. The rear wall portion 95c is attached to the third rear plate portion 41b3 of the rear support portion 41c, extends from the third rear plate portion 41b3 to the inside of the fuselage, and is connected to the intermediate wall portion 95b.

According to the above, for example, the operator can get into the cabin 12 from the field side by putting his feet on the step portion 41c and entering the cabin 12, and putting his feet on the step portion 41c and inside the cabin 12 It is possible to get off to the field side by going out from the outside.
As shown in FIGS. 1 and 3 to 5, the tractor 1 includes a foot light 15. The foot light 15 is a lamp that can illuminate the getting on / off step 41. The foot light 15 is provided above the step portion 41 and between the front support portion 41a and the rear support portion 41b. In other words, the foot light 15 is disposed above the cover 95 and is disposed between the front wall 95a and the rear wall 95c.

  The foot light 15 has a housing 15a and a lamp 15b provided in the housing 15a. The housing 15a is mounted on a mounting bracket 93. Specifically, as shown in FIG. 5, the mounting surface 93a of the mounting bracket 93 has a slope that moves upward from the inside to the outside of the body 3 in a side view (when viewed from the front of the tractor 1). It is. The housing 15a is mounted on the inclined mounting surface 93a. The optical axis C1 of the lamp 15b, which is the light source of the foot lamp 15, is substantially orthogonal to the inclination direction of the mounting surface 93a and intersects the upper surface of the step portion 41c.

According to the above, when the operator gets off or gets on the board, the getting on / off step 41 can be illuminated by the lamp 15b of the foot light 15.
As shown in FIG. 1, the tractor 1 includes a lighting control device 140. The lighting control device 140 is a device that controls at least the foot light 15. The lighting control device 140 is connected to a switching device 141 such as a relay that can be switched ON / OFF. The storage device 142 such as a battery is connected to the switching device 141, and the lamp 15 b of the foot light 15 is connected to the switching device 141. The lighting control device 140 turns on and off the foot light 15 by turning on or off the switching device 141.

  Further, an ignition switch 45 is connected to the lighting control device 140. The ignition switch 45 is a switch that can be switched ON / OFF. When the ignition switch 45 is ON, the start of driving of the prime mover 4 (start of driving) is commanded to the prime mover 4 or a control device that controls the prime mover 4, and when the ignition switch 45 is OFF, the driving of the prime mover 4 is started. (Drive stop) is instructed to the motor 4 or a control device that controls the motor 4.

  In addition, an opening / closing detection device 46 that detects the opening or closing of a door panel (door) 57 is connected to the lighting control device 140. The opening / closing detection device 46 is, for example, a sensor that detects opening or closing by detecting that the door panel 57 approaches or separates from a frame such as a column of the cabin 12. The opening / closing detection device 46 may be a sensor that detects the opening or closing of the door panel 57 by the rotation of the hinge 58, or may be another sensor.

  Further, an external PTO switch 47 is connected to the lighting control device 140. The external PTO switch 47 is a switch different from the PTO changeover switch, and is an ON / OFF switch for instructing start or stop of rotation of the PTO shaft 16 from outside the tractor 1. The external PTO switch 47 is provided, for example, in the vicinity of the traveling vehicle (body) 3 of the tractor 1, for example, a fender. When the external PTO switch 47 is turned ON, the PTO shaft 16 rotates by the PTO clutch 21 being connected. When the external PTO switch 47 is turned off, the rotation of the PTO shaft 16 stops because the PTO clutch 21 is disconnected. When the external PTO switch 47 is turned ON or OFF, the lighting control device 140 turns on the foot light 15 and turns off the foot light 15 after a predetermined time.

The lighting control device 140 starts the extinguishing control when the predetermined extinguishing condition is satisfied under the situation where the foot light 15 is on. In the light-off control, the light-off control measures the elapsed time from the start of the light-off control by starting countdown or count-up, and when the elapsed time reaches a predetermined time, the foot light 15 Turn off the light.
Specifically, under the situation where the footlight 15 has already been turned on, the lighting control device 140 determines the first time point P1 at which the prime mover 4 has stopped and the second time point P2 at which the opening / closing detection device 46 has detected that the door panel 57 has been opened. The foot light 15 is switched from on to off after a predetermined time from any of the later reference times.

6A to 6C show the operation of the foot light 15. 6A and 6B, description will be given on the assumption that the prime mover 4 has already been driven before the foot light 15 is switched from off to on.
FIG. 6A is a diagram illustrating an example of the operation of the foot light 15. As shown in FIG. 6A, in a situation where the door panel 57 is closed and the foot light 15 is turned off, when the door panel 57 is opened at the time point P10, the foot light 15 is turned on. That is, the illumination control device 140 changes the state where the footlight 15 is turned off and the opening / closing detection device 46 detects that the door panel 57 is closed from the state where the opening / closing detection device 46 detects that the door panel 57 is opened, By turning on the switching device 141, the foot light 15 is turned on.

  At the first time point P1 at which the ignition switch 45 is turned off and the prime mover 4 is stopped under the situation where the foot light 15 is on, the lighting control device 140 does not start the light-off control. If the opening / closing detection device 46 detects the opening of the door panel 57 at the second time point P2 after the first time point P1 at which the motor 4 stops, the lighting control device 140 turns off the light at the second time point P2 as a reference time point. Start control. The lighting control device 140 turns off the foot light 15 a predetermined time after the reference point at which the turning-off control is started.

According to the above description, for example, after the operator gets on the tractor 1 from the outside at the time point P10, the motor 4 is stopped at the first time point P1, and the operator gets off the tractor 1 at the second time point P2, The footlight 15 can be turned off a predetermined time after the time point P2.
FIG. 6B is a diagram illustrating an example of the operation of the foot light 15 different from FIG. 6A. As shown in FIG. 6B, similarly to FIG. 6A, when the door panel 57 is opened at the time point P10, the lighting control device 140 turns on the foot light 15.

  Under the situation where the foot light 15 is on, the light-off control is not started at the second time point P2 when the opening / closing detection device 46 detects the opening of the door panel 57. When the ignition switch 45 is turned off and the prime mover 4 is stopped at the first time point P1 after the second time point P2 when the opening of the door panel 57 is detected, the lighting control device 140 uses the time point of the second time point P2 as a reference time point. To start the light-off control. Similarly to FIG. 6A, in FIG. 6B, the illumination control device 140 turns off the foot light 15 a predetermined time after the reference point at which the turn-off control is started.

According to the above description, when the operator gets off the tractor 1 at the time point P10, gets on the vehicle again at the second time point P2, and stops the prime mover 4 at the first time point P1, the foot light 15 is provided a predetermined time after the first time point P1. Can be turned off.
FIG. 6C is a diagram illustrating an example of the operation of the foot light 15 different from FIGS. 6A and 6B. As shown in FIG. 6C, in a state where the prime mover 4 is stopped, even if the door panel 57 is opened at the time point P10, the lighting control device 140 turns on the foot light 15.

  At the time point P11 when the prime mover 4 is driven under the situation where the foot light 15 is on, the lighting control device 140 does not start the light-off control. The lighting control device 140 does not start the light-off control even at the first time point P1 at which the prime mover 4 stops. If the opening / closing detection device 46 detects the opening of the door panel 57 at the second time point P2 after the first time point P1 at which the motor 4 stops, the lighting control device 140 turns off the light at the second time point P2 as a reference time point. When a predetermined time has elapsed after the control is started and the light-off control is started, the foot light 15 is turned off.

  According to the above, for example, after the worker gets on the tractor 1 from the outside at the time point P10, the prime mover 4 is driven at the time point P11. The operator gets off the tractor 1 after driving the prime mover 4 and performs stationary work or the like with the door panel 57 opened between the time point P11 and the first time point P1. Then, when the worker returns to the tractor 1 again before the first time point P1, stops the prime mover 4 at the first time point P1, and gets off the tractor 1 at the second time point P2, a predetermined time after the second time point P2 The foot light 15 can be turned off.

  The work machine 1 includes a motor 4, a cabin 12 having a door 57 capable of opening and closing the entrance 63, an opening / closing detection device 46 for detecting the opening or closing of the door 57, and Step 41 attached to the corresponding position, a foot light 15 capable of illuminating the step 41, a first time point P1 at which the motor 4 has stopped, and a second time point at which the opening / closing detection device 46 has detected the opening of the door 57. A lighting control device 140 that switches the foot light 15 from on to off after a predetermined time from any reference time later than the time P2. According to this, in the case where the foot light 15 is switched from on to off after a predetermined time, the reference time at which the counting of the predetermined time is started is set to the first time P1 at which the motor 4 has stopped and the opening / closing detection device 46 has opened the door 57. Is detected, which is the later of the second time point P2, the foot light 15 can be smoothly turned off in response to various situations, such as when the worker works while getting on and off the vehicle. In addition, unnecessary lighting of the foot light 15 can be prevented, and the power of the storage battery 142 can be unnecessarily consumed, that is, the dead battery can be prevented.

The lighting control device 140 turns on the foot light 15 when the foot light 15 is turned off and the open / close detection device 46 detects that the door is open from the state where the open / close detection device 46 detects that the door is closed. I do. According to this, the footlight 15 can be turned on when the operator gets on and off the work machine.
The lighting control device 140 detects that the opening / closing detection device 46 detects the opening of the door 57 and that the prime mover 4 is driven in a state where the footlight 15 is turned off and the opening / closing detection device 46 detects that the door is closed. The lamp 15 is turned on. According to this, the foot light 15 can be turned on when the worker gets on and off the work machine and drives the prime mover to perform some work by the work machine 1.

The work machine 1 includes a PTO shaft 16 that is rotated by the power of the prime mover 4 and a work device 2 that is driven by the power of the rotation of the PTO shaft 16. According to this, even when the worker performs work using the work device 2 while getting on and off the work machine 1, the foot light 15 can be properly illuminated or turned off.
The work machine 1 includes an external PTO switch 47 for instructing the start or stop of rotation of the PTO shaft 16, and the lighting control device 140 provides a step when the external PTO switch 47 instructs start or stop of rotation. The light 15 is turned on, and after a predetermined time, the foot light 15 is switched from on to off. According to this, when the worker drives (rotates) the PTO shaft 16 outside the tractor 1 to perform the work or when the work outside is completed, the foot light 15 can be turned on, and the worker can use the foot light 15 from outside. The foot light 15 can be properly illuminated or turned off when getting on and off the vehicle.

  The getting on / off step 41 includes a front support portion 41a attached to the cabin 12, a rear support portion 41b attached to the cabin 12 and arranged behind the front support portion 41a, and a front support portion 41a and a rear support portion 41b. The step lamp 41 is provided over the step portion 41c and between the front support portion 41a and the rear support portion 41b. According to this, when the operator gets on and off using the getting on / off step 41, the getting on / off step 41 can be illuminated by the foot light 15.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 1 Tractor 2 Working device 3 Traveling vehicle (body)
Reference Signs List 4 motor 5 transmission 8 connection 10 driver's seat 11 control device 12 cabin 14 control device 15 lighting lamp
Reference Signs List 40 getting on / off step 41 a front supporting part 41 b rear supporting part 41 c step part 45 ignition switch 46 open / close detecting device 47 external PTO switch 50 roof 51 front supporting column 52 front panel 53 intermediate supporting column 54 door panel 55 rear supporting column 56 rear panel 63 entrance / exit 140 lighting control device 141 Time change switch

Claims (6)

Motor and
A cabin having a door capable of opening and closing the entrance,
An opening and closing detection device for detecting opening or closing of the door,
A boarding / alighting step mounted on a side of the cabin and corresponding to the entrance / exit;
A step light capable of illuminating the step of getting on and off,
A lighting control device that switches the footlight from on to off after a predetermined time from a later reference time point, which is either a first time point at which the motor has stopped or a second time point at which the opening / closing detection device has detected the opening of the door,
A working machine.   The lighting control device turns on the foot light when the foot light turns off and the open / close detection device detects that the door is open from the state in which the open / close detection device detects that the door is closed. The working machine according to claim 1.   The lighting control device is configured such that when the footlight is turned off and the opening / closing detection device detects that the door is closed, the opening / closing detection device detects opening of the door and the prime mover is driven. The work machine according to claim 1, which lights a lamp. A PTO shaft rotated by the power of the prime mover,
A working device driven by the power of rotation of the PTO shaft;
The working machine according to any one of claims 1 to 3, further comprising: An external PTO switch for commanding rotation start or rotation stop of the PTO shaft is provided,
The lighting control device according to claim 4, wherein the foot light is turned on when a rotation start or rotation stop command is issued by the external PTO switch, and the foot light is switched from lighting to off after a predetermined time. Work machine. The step of getting on and off includes fixing a front support portion attached to the cabin, a rear support portion attached to the cabin and disposed behind the front support portion, and a front support portion and a rear support portion. Having a step portion,
The work machine according to any one of claims 1 to 5, wherein the footlight is provided above the step portion and between the front support portion and the rear support portion.

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