WO2022158211A1

WO2022158211A1 - Work machine and handrail device for work machine

Info

Publication number: WO2022158211A1
Application number: PCT/JP2021/046985
Authority: WO
Inventors: 治正北岡; 晋輔岡田
Original assignee: ヤンマーホールディングス株式会社
Priority date: 2021-01-19
Filing date: 2021-12-20
Publication date: 2022-07-28
Also published as: JP2022110717A

Abstract

A work machine (4) is provided with a boarding part (47) which a person can board. The boarding part (47) has a boarding gate (30) and a front handrail (1). The boarding gate (30), through which a person passes, is provided on at least one of the left and right sides. The front handrail (1) is provided at the front end of the boarding gate (30). The front handrail (1) protrudes from a support part (213) located on the front side in a circumferential section of the boarding gate (30) to at least one of the back side and the central side in the left-right direction of the boarding part (47).

Description

Working machines and handrails for working machines

The present invention relates to a working machine provided with a riding section on which a passenger can ride, a working machine, and a handrail device for the working machine.

As a related technology, a combine harvester equipped with a traveling device, a reaping device, a threshing device, etc. is known (see Patent Document 1, for example). A working machine such as a combine harvester according to the related art is provided with a riding section (operating section) on which a passenger (operator) can ride. are placed.

In the work machine according to the related technology, the boarding part is equipped with a cabin, and the passenger gets on and off through the boarding gate provided with the cabin door. In the related art, a boarding section is provided with a handrail for getting on and off. The handrail is fixed to the right front portion of the cabin frame, and protrudes outward (rightward) in the left-right direction from the cabin frame and forward.

JP 2019-162081 A

In the configuration of the above-mentioned related technology, since it protrudes away from the center of the boarding section (to the right and forward), depending on the physique of the passenger, it may be difficult to take a posture to hold the handrail when getting on and off the boarding section. There is

An object of the present invention is to provide a work machine and a handrail device for the work machine that make it easier for more passengers to get on and off the boarding section.

A work machine according to one aspect of the present invention includes a riding section on which a rider can board. The boarding section has an entrance and a front handrail section. The entrance/exit is arranged in at least one of left and right directions, through which the passenger passes. The front handrail is arranged at the front end of the entrance/exit. The front handrail protrudes toward at least one of a rear side and a center side of the boarding section in the left-right direction from a support section located on the front side of the peripheral edge of the entrance/exit.

A work machine handrail device according to another aspect of the present invention is used as the front handrail portion of the work machine.

According to the present invention, it is possible to provide a work machine and a handrail device for the work machine that make it easier for more passengers to get on and off the boarding section.

FIG. 1 is a schematic diagram showing a riding section of a work machine according to Embodiment 1, with a front side handrail section and a rear side handrail section enlarged. 2 is a schematic left side view of the work machine according to Embodiment 1. FIG. 3 is a schematic plan view of the working machine according to Embodiment 1. FIG. 4 is a schematic perspective view of the riding section of the working machine according to Embodiment 1. FIG. 5 is a schematic right side view of the riding section of the work machine according to the first embodiment; FIG. FIG. 6 is a schematic explanatory diagram showing how a rider appears on the boarding section of the work machine according to the first embodiment. 7A and 7B are schematic trihedral views showing the front handrail portion of the work machine according to Embodiment 1. FIG. 8 is a schematic right side view showing a front handrail and a rear handrail of the work machine according to the first embodiment; FIG. 9 is a sectional view taken along the line A1-A1 of FIG. 8, showing the front handrail and the rear handrail of the work machine according to the first embodiment. FIG. 10 is a schematic diagram showing a riding portion of the work machine according to Embodiment 2, with the front side handrail portion and the rear side handrail portion enlarged.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The following embodiments are specific examples of the present invention, and are not intended to limit the technical scope of the present invention.

(Embodiment 1)
[1] Overall Configuration First, the overall configuration of the work machine 4 according to the present embodiment will be described with reference to FIGS. 2 and 3. FIG. The work machine 4 includes a riding section 47 on which at least the rider H1 (see FIG. 6) can ride.

The term "working machine" as used in the present disclosure means a machine that performs various kinds of work in a work area such as a field. It is a work vehicle such as a machine and a transplanter. That is, work machine 4 includes a work vehicle. The work machine 4 is not limited to a "vehicle", and may be, for example, a work projectile or a work vessel. Further, the work machine 4 is not limited to agricultural machines (agricultural machines), and may be construction machines (construction machines), for example. In this embodiment, unless otherwise specified, the case where the working machine 4 is a riding-type harvesting machine will be described as an example.

In addition, the "harvesting machine" referred to in the present disclosure is a machine that performs crop harvesting work in a field, and includes, for example, a combine (combine harvester) that performs threshing and sorting in addition to harvesting work. A combine harvester is mainly used for grain harvesting, and harvests crops while moving (running) in a field. In particular, there are two types of combine harvesters: a general-purpose (general-purpose) combine that feeds the entire harvested crop to the threshing machine, and a self-threshing type combine that feeds only the tip of the harvested crop to the threshing machine. A common combine harvester for harvesting wheat grown in a field (field) will be described as an example of the work machine 4 . Further, in the present embodiment, as an example, it is assumed that the rider H1 riding on the riding section 47 is the operator (operator), and the work machine 4 is operated by the manipulation of the rider H1. However, the passenger H1 is not limited to the operator. For example, when the working machine 4 operates by remote control or automatic operation, the passenger H1 is a person who gets on the working machine 4 for the purpose of monitoring or inspection (maintenance). may be

Also, in this embodiment, for convenience of explanation, the vertical direction in which the work machine 4 is usable is defined as the vertical direction D1. Further, as shown in FIG. 3 , a front-rear direction D2 and a left-right direction D3 are defined with reference to directions viewed from a person (passenger H1) riding (the riding section 47 of) the work machine 4 . In other words, the directions used in the present embodiment are all defined with reference to the work machine 4, and the direction in which the body of the work machine 4 moves when the work machine 4 moves forward is "forward". The direction in which the body of the working machine 4 moves when the machine 4 moves backward is "backward". Similarly, the direction in which the front end of the body of the work machine 4 moves when the work machine 4 turns to the right is "right", and the direction in which the front end of the body of the work machine 4 moves when the work machine 4 turns to the left is " to the left. However, these directions are not meant to limit the directions in which the work machine 4 is used (directions during use).

The work machine 4 according to this embodiment includes a traveling device 41, a harvesting device 42, a threshing device 43, a sorting device 44, a storage device 45, a power device 46, and the like, in addition to the riding section 47. In this embodiment, the working machine 4 further includes a control device, a communication terminal, a fuel tank, a battery, and the like.

The traveling device 41 can move the working machine 4 in the front-rear direction D2 and the left-right direction D3. For example, the work machine 4 performs harvesting work while meandering in a field such as a field or a rice field. As an example, the work machine 4 may move while turning right (or left) from the outside to the inside in the field, and in this case, the movement locus of the work machine 4 becomes a spiral path.

The reaping device 42 reaps the crops (in this embodiment, wheat as an example) in the field. The harvesting device 42 has a reel 421, a cutter 422, a raking auger 423, a conveyer 424, a rotor 425, a feeder house 426, and the like. The reel 421 guides the culm of the crop to the cutter 422 by rotating. Cutter 422 cuts the culm guided by reel 421 . As a result, the stalks of the crops growing in the field are cut in the middle, and the stalks including at least the tips are harvested by the working machine 4 .

The raking auger 423 rakes the harvested culms into the feeder house 426 . Specifically, the raking auger 423 is a lateral feed screw that conveys the harvested culms in the left-right direction D3 and collects them at the front position of the feeder house 426 .

The feeder house 426 constitutes the outline of a route for passing the harvested crops (grain culms) between (the rake auger 423 of) the harvesting device 42 and the threshing device 43 . In this embodiment, the threshing device 43 is positioned diagonally above and behind the harvesting device 42 . The feeder house 426 is, for example, a hollow tubular shape (square tubular shape) having a rectangular cross section, and is arranged to extend obliquely upward from the harvesting device 42 toward the threshing device 43 . Grain culms harvested by the harvesting device 42 are raked into the feeder house 426 through an intake opening on the front side of the feeder house 426 and sent to the threshing device 43 through the internal space of the feeder house 426 .

The transport conveyor 424 is arranged inside the feeder house 426 . The transport conveyor 424 conveys the culms collected by the raking auger 423 to the front position of the inlet of the feeder house 426 and rake into the feeder house 426 from the inlet to the rotor 425 through the inside of the feeder house 426 . do. The rotor 425 feeds the culms conveyed by the conveyer 424 to the threshing device 43 .

The threshing device 43 performs threshing processing on the culms harvested by the harvesting device 42 . The threshing process separates the threshing containing grains from the culms. The threshing falls from the threshing device 43 to the sorting device 44 below.

The sorting device 44 executes a sorting process of sorting out grains from the threshing that falls from the threshing device 43 . The sorting device 44 sorts out grains from the threshed grains by, for example, sieving the threshed grains while applying air to the threshed grains obliquely from below.

The threshing device 43, for example, carries out the threshing process for the culms while conveying the culms from the front part of the threshing device 43 to the rear. Similarly, the sorting device 44 carries out the sorting process for the threshed grain while conveying the threshed grain from the front part of the sorting device 44 to the rear, for example.

The storage device 45 has a vertical transport duct 451, a vertical transport conveyor 452, a grain tank 453, a discharge auger 454, and the like. The vertical conveying duct 451 is a duct that connects the sorting device 44 and the upper inlet of the grain tank 453 . The vertical transport conveyor 452 is a screw conveyor that rotates within the vertical transport duct 451 to transport grains from the sorting device 44 into the grain tank 453 . The discharge auger 454 discharges grains in the grain tank 453 to an arbitrary location around the working machine 4 .

The power unit 46 is a drive source for the traveling device 41, the harvesting device 42, the threshing device 43, the sorting device 44, the storage device 45, and the like. The power unit 46 has, for example, an engine such as a diesel engine as a power source. Moreover, the power unit 46 may have a motor (electric motor) as a power source, or may have a hybrid power source including an engine and a motor.

The riding section 47 is provided with a driver's seat 31 (see FIG. 1) on which the passenger H1 sits, and operating devices such as a steering wheel 32 operated by the passenger H1, various operating levers, and various operating switches. there is The control device controls the traveling device 41, the harvesting device 42, the threshing device 43, the sorting device 44, the storage device 45, the power device 46, and the like according to the operation received by the operating device. For example, the operating device includes an engine ON/OFF key, the control device starts the engine of the power plant 46 when the engine ON/OFF key is switched on, and the engine ON/OFF key is turned on. Stop the engine when switched off.

The communication terminal communicates with a server or the like external to the work machine 4. In this case, the communication terminal is configured to indicate the operation status of the work machine 4, the current position of the work machine 4, the yield of the crop, the taste of the crop (including protein content or water content, etc.), the working time, or the working efficiency. etc., to a server or the like as appropriate. In this embodiment, the communication terminal is configured to detect the current position of the work machine 4 using a satellite positioning system such as GNSS (Global Navigation Satellite System). Further, the communication terminal may receive control information related to driving assistance or automatic driving of the work machine 4 from a server or the like. As an example, information (yield data) about the harvested amount can be obtained by detecting the amount of harvested grains with a sensor (grain sensor) provided in the work machine 4 . As an example, this type of sensor includes an impact detection unit such as a strain gauge or a piezoelectric element attached to the upper surface of the grain tank 453, and the grain conveyed toward the grain tank 453 by the vertical conveyer 452 detects the impact. Detects the impact force when it collides with a part. Of course, the method of obtaining the yield of the work machine 4 is not limited to this.

[2] Specific Configuration of Riding Section Next, a specific configuration of the riding section 47 of the work machine 4 according to the present embodiment will be described with reference to FIGS. 1 and 4 to 6. FIG.

Types of the riding section 47 of the work machine 4 such as a combine harvester include a cabin type, a canopy type, a floor type, and the like. The cabin-type boarding unit 47 includes a cabin 2, and a passenger H1 boards in a cabin space 20 inside the cabin 2. - 特許庁The canopy-type boarding section 47 includes a canopy (roof), and the passenger H1 rides in the space below the canopy. The floor-type boarding section 47 does not include a cabin 2, a canopy, or the like, and the passenger H1 boards in a space opened upward. In this embodiment, a case where the boarding section 47 is a cabin type will be described as an example.

In this embodiment, the riding section 47 is arranged in front of the grain tank 453 (see FIG. 3) on the right side of the machine body of the work machine 4 . Further, the riding portion 47 is positioned behind the harvesting device 42 and above the power device 46 (see FIG. 2). With this arrangement, the passenger H1 gets on and off the boarding section 47 from the right side of the boarding section 47 . Therefore, in the present embodiment, the entrance/exit 30 through which the passenger H1 passes is arranged on the right side (right side) of the boarding section 47 in the horizontal direction D3. In other words, the passenger H1 gets on and off the boarding section 47 through the entrance 30 opened on the right side of the boarding section 47 . The boarding section 47 includes a floor 33 as shown in FIG.

The boarding section 47 includes a display (monitor), gauges, etc., in addition to various operating devices including the driver's seat 31 and the steering wheel 32 . The driver's seat 31 , various operating devices, displays, gauges, and the like are all arranged above the floor 33 . In FIG. 1 and the like, illustration of various operating devices, displays, and gauges in the cabin space 20 is omitted as appropriate.

The cabin-type boarding section 47 has a cabin 2 shaped to cover the floor 33, as shown in FIGS. The cabin 2 has a cabin frame 21, a cabin roof 22, a door 23 (cabin door), and the like. In a cabin space 20 inside (inside) the cabin 2, a driver's seat 31, various operating devices, a display, instruments, and the like are arranged. In other words, the cabin 2 constitutes the outer shell of the boarding section 47, and the passenger H1 boards inside the cabin 2 (inside).

That is, in this embodiment, the riding section 47 has the cabin roof 22 and the cabin frame 21 that supports the cabin roof 22 . The cabin frame 21 is a structure as a skeleton of the cabin 2 and is formed so as to surround the cabin space 20 . The cabin roof 22 is arranged above the cabin frame 21 and supported on the floor 33 by the cabin frame 21 . The cabin roof 22 has a rectangular shape in a plan view and is sized to cover the entire riding section 47 . In the present embodiment, as an example, both the cabin frame 21 and the cabin roof 22 are made of metal, but the present invention is not limited to this example. etc. may be used as appropriate.

The cabin frame 21 has at least a front frame 211 (front pillar) and a rear frame 212. The front frame 211 and the rear frame 212 are arranged at the right end of the riding section 47 so as to face each other in the front-rear direction D2. The front frame 211 constitutes a portion (front edge) of the outer peripheral edge of the entrance/exit 30 on the front side of the entrance/exit 30 . The rear frame 212 constitutes a portion (rear edge portion) of the outer peripheral edge of the entrance/exit 30 on the rear side of the entrance/exit 30 . Further, of the outer peripheral edge of the entrance/exit 30 , the portion on the upper side of the entrance/exit 30 is constituted by the cabin roof 22 , and the portion on the lower side of the entrance/exit 30 is constituted by the floor 33 . That is, on the right side surface of the boarding section 47 , a portion surrounded by the front frame 211 , the rear frame 212 , the cabin roof 22 and the floor 33 serves as the entrance/exit 30 . The front frame 211 is positioned in front of the rear frame 212 across the entrance/exit 30 .

In this embodiment, as an example, the front frame 211 is a rectangular tubular member that extends along the vertical direction D1. The front frame 211 includes a support portion 213 arranged below the central portion in the vertical direction D1. The support portion 213 is inclined with respect to the up-down direction D1 so that the lower end side is located forward. Also, the rear frame 212 is a rectangular tubular member that extends along the vertical direction D1. The rear frame 212 includes a rear support portion 214 arranged in the center in the vertical direction D1. The rear support portion 214 is inclined with respect to the up-down direction D1 so that the lower end side is located forward.

The door 23 is provided at the entrance/exit 30, and is rotatable between a "closed position" covering the entrance/exit 30 and an "open position" opening the entrance/exit 30 so that the passenger H1 can pass through. is. The door 23 is supported on the cabin frame 21 by a hinge 231 so as to be rotatable around the rotation axis Ax1 (see FIG. 5). Since the entrance/exit 30 is arranged in at least one of the right and left directions D3 of the boarding section 47, the door body 23 is also arranged in at least one of the right and left directions D3 of the boarding section 47. As shown in FIG. In this embodiment, the entrance/exit 30 is arranged on the right side of the boarding section 47 , so the door body 23 is also arranged on the right side of the boarding section 47 . In FIG. 1, illustration of the door 23 is omitted, and the hinge 231 is indicated by an imaginary line (a two-dot chain line).

Types of such a door 23 include a "front-opening type" in which the front side in the front-rear direction D2 opens, and a "rear-opening type" in which the rear side opens. In this embodiment, as an example, the door 23 is of a front-opening type. Therefore, the door 23 is supported by a plurality of (here, two) hinges 231 on the rear frame 212 located on the rear side of the entrance/exit 30 . As a result, the door 23 is rotatably supported around the rotation axis Ax1 positioned at the rear edge of the door 23 . Furthermore, in the present embodiment, the door 23 opens outward, and when viewed from the front (right side in this embodiment) of the door 23 on the outside of the boarding section 47, the front end portion of the door 23, which is the free end of the door 23, The door 23 is opened by the operation of pulling (outside the boarding portion 47). That is, the door body 23 moves from the closed position to the open position by rotating clockwise in top view (planar view). In this embodiment, the front frame 211 and the rear frame 212 are covered with the door 23 when the door 23 is in the closed position.

The cabin 2 further has various panel materials including a glass panel 24 as a windshield. These various panel members are appropriately attached to both sides of the cabin frame 21 in the front-rear direction D2 and both sides in the left-right direction D3, and surround the cabin space 20 from all sides together with the door body 23 .

Furthermore, the cabin roof 22 (or the cabin frame 21) is equipped with exterior parts such as a mirror 34. In this embodiment, the mirror 34 is supported by a mirror stay 35 extending downward from the right front portion of the cabin roof 22 .

With the configuration as described above, when boarding the boarding section 47, the passenger H1 enters the cabin space 20 inside the cabin 2 from the entrance/exit 30 with the door 23 opened (in the open position). By closing the body 23 (to the closed position), boarding on the boarding section 47 is completed. On the other hand, when getting off from the boarding section 47, the passenger H1 exits the cabin 2 from the entrance/exit 30 with the door 23 opened (in the open position), and closes the door 23 (in the closed position). ), it is possible to get off the boarding section 47 . In particular, in the cabin-type boarding section 47 including the cabin 2 as in the present embodiment, at least the cabin frame 21 functions as a skeleton of the cabin 2 and supports the cabin roof 22, the door 23, and the like. It has sufficient strength (rigidity) for Also, the cabin 2 may be removable from the body of the working machine 4 .

By the way, the riding section 47 of the work machine 4 as described above is not placed on the ground because, for example, it is necessary to secure the field of view of the rider H1 who is the operator, or because the riding section 47 is positioned above the power unit 46 . It is often located relatively high above (ground level). Therefore, the boarding section 47 preferably has handrails for assisting the passenger H1 in getting on and off. However, for example, if the handrail protrudes away from the center of the boarding section 47 (to the right and forward), depending on the physique of the passenger H1, it may be difficult to take a posture of grasping the handrail when getting on and off the boarding section 47. there is a possibility.

In this embodiment, by adopting the following configuration for the handrails, the work machine 4 that allows more passengers H1 to easily get on and off the boarding section 47 is realized.

That is, as shown in FIG. 1, the work machine 4 according to this embodiment includes a riding section 47 on which the rider H1 can board. The boarding section 47 has an entrance 30 and a front handrail section 1 . The entrance/exit 30 is arranged in at least one of the left and right directions D3 (in the boarding portion 47), and is a portion through which the passenger H1 passes. The front handrail 1 is arranged at the front end of the entrance/exit 30 . Here, the front handrail portion 1 protrudes from the support portion 213 to at least one of the rear side and the center side of the riding portion 47 in the left-right direction D3. The support portion 213 is positioned on the front side of the peripheral portion of the entrance/exit 30 .

As described above, the working machine 4 according to this embodiment includes the front handrail 1 arranged at the front end of the entrance/exit 30 . Therefore, the passenger H1 who gets on and off the boarding section 47 through the entrance 30 can use the front handrail section 1 as an aid, such as by grasping the front handrail section 1. , making it easier to get on and off the boarding section 47 . The front handrail portion 1 protrudes from the support portion 213 positioned on the front side of the peripheral portion of the entrance/exit 30 toward at least one of the rear side and the center side (that is, inside) of the boarding portion 47 in the left-right direction D3. do. Therefore, the front handrail 1 is positioned relatively close to the passenger H1 passing through the entrance/exit 30, and the front handrail 1 can be easily reached. Therefore, even passengers H1 of various physiques, such as those who are smaller than the average height or whose hands are relatively short, can easily grasp the front handrail 1 in a relatively natural posture. can be used as an aid to get on and off the boarding section 47 . As a result, it is possible to realize the work machine 4 that makes it easier for more riders H1 to get on and off the riding section 47 .

In more detail, the front handrail 1 includes a gripping portion 11 for the passenger H1 to grasp (including gripping), as shown in the balloon in FIG. In this embodiment, as an example, the front handrail 1 is made of a cylindrical metal member (metal pipe), and has a circular outer peripheral shape (perfect circle) in a cross section perpendicular to its length. The front handrail section 1 includes a grip section 11 and leg sections 12 . The leg portion 12 includes an upper leg portion 121 and a lower leg portion 122, and the upper leg portion 121 and the lower leg portion 122 protrude from the support portion 213 in one direction. The grip portion 11 is provided so as to connect the tip ends of the upper leg portion 121 and the lower leg portion 122, and the front handrail portion 1 is generally C-shaped with the grip portion 11 and the leg portion 12 as a whole. formed.

The grip portion 11 is a linear portion having a length along the vertical direction D1, and the leg portions 12 (the upper leg portion 121 and the lower leg portion 122) are located at both ends of the grip portion 11 in the longitudinal direction ( It is a portion extending from the upper end portion and the lower end portion toward the support portion 213 . Here, the upper leg portion 121 is connected to the upper end portion of the grip portion 11 and the lower leg portion 122 is connected to the lower end portion of the grip portion 11 . As a result, the grip portion 11 is supported by the support portion 213 via the leg portion 12 and is fixed to the support portion 213 while ensuring a gap W1 between itself and the support portion 213 .

The cross-sectional shape and outer diameter (thickness) of at least the grip portion 11 of the front handrail portion 1 are set to shapes and dimensions that are easy for the passenger H1 to grip. In this embodiment, as an example, based on data such as the size of a typical Japanese adult hand, and the length and thickness of the fingers, the cross-sectional shape and outer diameter that are assumed to be easy to grip with one hand are the grip portion. 11 adopted.

As an example, as a way of gripping the gripping portion 11, there are two ways of gripping the gripping portion 11; There is a “reverse hand” in which four fingers other than the thumb are inserted into the gap W1 between the grip portion 11 and the support portion 213 . It is up to the passenger H1 whether to grip the grip part 11 with the straight hand or the reverse hand, and it is preferable for the passenger H1 to grip the grip part 11 in an easy-to-grip manner according to his or her physique. Of course, it is not intended to limit the way of gripping the grip portion 11 to the straight hand and the reverse hand, and other gripping methods may be used.

Further, in the present embodiment, the leg portion 12 (the upper leg portion 121 and the lower leg portion 122) and the grip portion 11 are seamlessly continuous due to the curved shape. Such seamlessly continuous leg portion 12 and grip portion 11 can be realized, for example, by bending a single metal pipe. If the grip portion 11 and the leg portion 12 are seamlessly connected, the passenger H1 moves the hand holding the grip portion 11 to a position where it touches the leg portion 12 and slides it to the front handrail portion. 1 can be grabbed. As a result, it is possible to deal with more diverse usages of the front handrail portion 1 .

Here, in this embodiment, the front handrail 1 is fixed to the front frame 211 (front pillar) of the cabin frame 21 . In other words, a part of the front frame 211 of the cabin frame 21 functions as a support portion 213 that supports the front handrail portion 1 . That is, as described above, of the cabin frame 21, the front frame 211 (front pillar) that constitutes the front edge of the entrance/exit 30 has the support portion 213 that is arranged below the central portion in the vertical direction D1. contains. The support portion 213 supports the front handrail portion 1 .

Thus, in this embodiment, the support portion 213 is a part of the cabin frame 21. Since the cabin frame 21 has sufficient strength, by using a part of the cabin frame 21 as the support portion 213, it becomes easier to firmly support the front handrail portion 1. As shown in FIG. Therefore, it becomes easier for the passenger H1 to put his or her weight on the front handrail portion 1, and getting on and off the boarding portion 47 using the front handrail portion 1 becomes easier.

Furthermore, the front handrail section 1 is configured so that at least the grip section 11 is parallel to the support section 213 of the cabin frame 21 . In this embodiment, the support portion 213 of the cabin frame 21 is inclined with respect to the vertical direction D1 so as to be located forward toward the lower end side as described above. , is inclined with respect to the vertical direction D1. This makes it easier to secure the gap W1 having the same width over the entire length of the gripping portion 11 between the gripping portion 11 and the support portion 213 . As an example, the width of the gap W1 is preferably 30 mm or more.

In addition, in the work machine 4 according to this embodiment, the riding section 47 further includes the rear handrail section 5 as shown in FIG. The rear handrail portion 5 is arranged at the rear end portion of the entrance/exit 30 . The rear handrail 5 protrudes forward from the rear end of the entrance/exit 30 . That is, in this embodiment, in addition to the front handrail portion 1 arranged at the front end portion of the entrance/exit 30, the rear handrail portion 5 arranged at the rear end portion of the entrance/exit 30 is provided. As a result, the handrails (the front handrail portion 1 and the rear handrail portion 5) are arranged on both sides of the entrance/exit 30 in the width direction (the front-rear direction D2). It becomes easier to do. In short, the passenger H1 who gets on and off the boarding section 47 through the entrance 30 grasps the front handrail section 1 with the right hand and the rear handrail section 5 with the left hand. By grasping with both hands, it becomes easier to support the body, and it becomes easier to get on and off the riding section 47.例文帳に追加

Here, the distance between the front handrail 1 and the rear handrail 5 is set so that the passenger H1 can hold the front handrail 1 and the rear handrail 5 with both hands. In other words, as an example, based on data such as the hand length and height of a typical Japanese adult, both hands of the passenger H1 can reach the front handrail 1 and the rear handrail 5 with a margin. The front side handrail part 1 and the rear side handrail part 5 are arranged at intervals assumed to be easy to grip.

In more detail, the rear handrail 5 includes a rear grip 51 for the passenger H1 to grasp (or grip), as shown in the balloon in FIG. In this embodiment, as an example, the rear handrail portion 5 is made of the same cylindrical metal member (metal pipe) as the front handrail portion 1 . The rear handrail portion 5 includes a rear grip portion 51 and rear leg portions 52 . The rear leg portion 52 protrudes forward from the rear support portion 214 . The rear grip portion 51 spans between the tip of the rear leg portion 52 and the support base 36 . The support base 36 is installed on the floor 33 of the riding part 47, and the rear grip part 51 is on the opposite side of the rear leg part 52 so as to protrude obliquely upward and rearward from the upper surface of the support base 36. The end portion is supported by a support base 36 .

The rear grip portion 51 is a linear portion having a length along the vertical direction D1, and the rear leg portion 52 is a linear portion having a length along the horizontal direction (front-back direction D2). is. As a result, the rear grip portion 51 is supported by the rear support portion 214 via the rear leg portion 52, and the rear grip portion 51 is held in a state in which a gap W2 is secured between the rear support portion 214 and the rear grip portion 51. It is fixed to support 214 .

Here, in the present embodiment, the rear handrail section 5 (at least one end) is fixed to the rear frame 212 of the cabin frame 21 . That is, part of the rear frame 212 of the cabin frame 21 functions as a rear support portion 214 that supports the rear handrail portion 5 . That is, as described above, of the cabin frame 21, the rear frame 212 forming the rear edge portion of the entrance/exit 30 includes the rear support portion 214 arranged in the central portion in the vertical direction D1. The rear handrail portion 5 is supported by the rear support portion 214 .

In addition, the cross-sectional shape and outer diameter of the rear grip portion 51 of the rear handrail portion 5, and the details of the structure such as how to grip it are generally the same as those of the grip portion 11 of the front handrail portion 1.

The front handrail section 1 and the rear handrail section 5 are fixed to the cabin frame 21 by appropriate means. In this embodiment, as an example, both the front handrail portion 1 and the rear handrail portion 5 are fixed to the cabin frame 21 by welding. However, the method of fixing the front handrail portion 1 and the rear handrail portion 5 is not limited to this, and the front handrail portion 1 and the rear handrail portion 5 may be fixed to the cabin frame 21 by adhesion, for example, or may be fixed to the cabin frame. 21 may be integrally molded. Further, for example, the front handrail section 1 and the rear handrail section 5 may be fixed to the cabin frame 21 in a detachable manner by using fasteners such as screws, bolts or nuts.

Also, in this embodiment, each of the front handrail portion 1 and the rear handrail portion 5 is basically made of metal, and the material is selected according to the required strength, weather resistance, and the like. However, it is not limited to the front handrail portion 1 and the rear handrail portion 5, and for example, resin, wood, or the like may be used as appropriate. As an example, the surfaces of the front handrail portion 1 and the rear handrail portion 5 may be provided with an anti-slip resin coating layer.

Furthermore, in the work machine 4 according to the present embodiment, the riding section 47 further has a step section 37 as shown in FIG. The footrest portion 37 is arranged below the lower end of the boarding/alighting opening 30 and is used to support the feet of the passenger H1 getting on and off the boarding portion 47 . In other words, the foot part 37 is a part on which the foot (one foot) of the passenger H1 is put, and has an appropriate shape such as a concave shape, a tread shape, or a projection shape, on which a person's foot can be put. adopt. Although illustration of a structure for supporting the foot portion 37 is omitted in FIG. be. In this embodiment, as an example, the foot portion 37 is a step plate-like member supported by the machine body of the working machine 4, and is provided in two stages. Moreover, the shape and dimensions of the foot part 37 are assumed to be easy to put on from data such as the size of the foot of a typical Japanese adult.

By providing such a footrest 37, it becomes easier for the passenger H1 to get on and off the boarding section 47. In short, the passenger H1 who gets on and off the boarding section 47 through the boarding/alighting opening 30 can easily support his body by putting his right foot on the footrest section 37 while grasping the front handrail section 1 with his right hand. Getting on and off the portion 47 becomes easier. In particular, when the rear handrail 5 is provided as in the present embodiment, the passenger H1 grabs the front handrail 1 and the rear handrail 5 with both hands and places one foot on the footrest 37 . By wearing it, you can take a "three-point support" posture that supports your body in three places, making it easier to stabilize your body.

Next, how to use the front handrail section 1, the rear handrail section 5, the footrest section 37, etc. will be described with reference to FIG. However, the procedure described below is merely an example, and is not intended to limit the usage of the front handrail 1, the rear handrail 5, the footrest 37, and the like. In addition, in FIG. 6, the passenger H1 who is in the middle of boarding the boarding section 47 is schematically shown by an imaginary line (a chain double-dashed line).

When boarding the boarding section 47, the passenger H1, with the door 23 open, turns his or her back outward (to the right) in the left-right direction D3, and grasps the front handrail section 1 with his right hand (in FIG. 6). of ST1). The front handrail 1 is arranged at the front end of the entrance/exit 30 on the side opposite to the rotation axis Ax1 of the door 23, so that the passenger H1 can easily reach the front handrail 1 without opening the door 23 fully. is relatively easy to grasp. Next, the passenger H1 grabs the rear handrail 5 with his left hand while holding the front handrail 1 (ST2 in FIG. 6). As a result, the passenger H1 assumes a posture of grasping the front handrail portion 1 and the rear handrail portion 5 with both hands, with the back facing outward (to the right) in the left-right direction D3.

Next, the passenger H1 puts his or her right foot on the footrest 37 while holding the front handrail 1 and the rear handrail 5 with both hands (ST3 in FIG. 6). At this time, the passenger H1 can raise his/her right foot while supporting the weight of the front handrail portion 1 and the rear handrail portion 5, so that the passenger H1 can step on the footrest portion 37 in a stable posture. As a result, the passenger H1 assumes a posture supported at three points by the front handrail 1, the rear handrail 5, and the footrest 37, with the back facing outward (to the right) in the left-right direction D3. Take. From this state, the rider H1 lifts his body while grasping the front handrail 1 and the rear handrail 5 with both hands, and places his left foot on the floor 33 of the boarding section 47 . Then, the passenger H1 can get into the cabin space 20 inside the cabin 2 by further lifting the body and placing the right foot on the floor 33 of the boarding section 47 . Finally, the passenger H1 closes the door 23 (brings it to the closed position) to complete boarding on the boarding unit 47 .

On the other hand, when the passenger H1 gets off the boarding section 47, the door body 23 is opened, the back is turned to the outside (right side) in the left-right direction D3, and first the rear handrail section 5 is grasped with the left hand. Next, the passenger H1 grabs the front handrail section 1 with the right hand while holding the rear handrail section 5 . Next, while holding the front handrail 1 and the rear handrail 5 with both hands, the passenger H1 slowly lowers his/her body and puts his/her right foot on the footrest 37 . At this time, the passenger H1 assumes a posture supported at three points by the front handrail 1, the rear handrail 5, and the footrest 37, with the back facing outward (to the right) in the left-right direction D3. Take. From this state, the passenger H1 can get out of the cabin 2 through the entrance/exit 30 by putting the left foot on the ground and then putting the right foot on the ground. Finally, the passenger H1 closes the door 23 (brings it to the closed position) to complete getting off from the boarding section 47 .

By the way, the parts used as the front side handrail portion 1 for the work machine 4 described above are also distributed independently as a work machine handrail device. For example, when the user (owner, administrator, etc.) of the work machine 4 decides whether or not to mount the front handrail 1, a handrail device for the work machine as the front handrail 1 is prepared as an option. In other words, the working machine handrail device according to the present embodiment is used as the front handrail 1 for the working machine 4 .

[3] Specific Configuration of Front Handrail Next, a specific configuration of the front handrail 1 according to the present embodiment will be described with reference to FIG.

FIG. 7 is a schematic trihedral view of the front handrail 1 and the support 213 viewed from three directions. That is, FIG. 7 shows the front handrail portion 1 and the support portion 213 in a "right side view" viewed from the right, a "top view" viewed from above, and a "rear view" viewed from the rear.

As is clear from FIG. 7, in the present embodiment, the front handrail section 1 projects from the support section 213 toward the rear side and toward the center of the riding section 47 in the left-right direction D3. That is, in the present embodiment, since the support portion 213 is positioned in the front right portion of the riding portion 47, the center side of the riding portion 47 in the left-right direction D3 when viewed from the support portion 213, that is, the inner side of the riding portion 47 is the left side. becomes. The front handrail portion 1 is located on the rear side as seen from the support portion 213 (see the top view and the right side view in FIG. 7) and the left side as seen from the support portion 213 (see the top view and the rear view in FIG. 7). ) and protrude both.

In short, the front handrail portion 1 is configured to protrude from the support portion 213 toward at least one of the rear side and the center side (that is, the left side) of the riding portion 47 in the left-right direction D3. protrude in both. As a result, the front handrail 1 protrudes from the front end (supporting portion 213) of the entrance 30 in a direction approaching the center of the boarding portion 47 in plan view (top view). Therefore, even for passengers H1 of various physiques, such as being smaller than the average height or having relatively short hands, by grasping the closer front handrail section 1, the front handrail can be held in a more natural posture. It becomes easier to grasp part 1.

In addition, as is clear from FIG. 7, in this embodiment, the front handrail section 1 includes a grip section 11 and leg sections 12 . The leg portion 12 connects between the support portion 213 and the grip portion 11 . The leg portion 12 is inclined with respect to the front-rear direction D2 so as to approach the center of the riding portion 47 in the left-right direction D3 toward the rear side. That is, the leg portions 12 (the upper leg portion 121 and the lower leg portion 122) extend obliquely rearward from the support portion 213, so that the front handrail portion 1 as a whole extends rearward and right and left from the support portion 213. It protrudes toward the center of the riding portion 47 in the direction D3. Specifically, the leg portion 12 extends obliquely rearward to the left toward the rear side and the left side that is the center side of the riding portion 47 in the left-right direction D3 as viewed from the support portion 213 (FIG. 7). (see top view of ). By having the leg portions 12 inclined with respect to the front-rear direction D2 in this manner, a relatively large gap W1 is secured between the grip portion 11 and the support portion 213 if the lengths of the leg portions 12 are the same. can. Therefore, it becomes easier to grasp the grip portion 11 .

Furthermore, in this embodiment, the front handrail section 1 is arranged within the cabin space 20 surrounded by the cabin frame 21 . That is, the front handrail portion 1 is accommodated within the cabin space 20 rather than outside the cabin space 20 when viewed from the entrance/exit 30 (see FIG. 9). Therefore, for example, compared with the case where the front handrail part 1 protrudes to the outside of the cabin space 20, the number of projections to the outside of the riding part 47 can be reduced. Further, for example, even if the door body 23 is of a "rear-opening type" that opens on the rear side, the passenger H1 can grasp the front handrail part 1 without being blocked by the door body 23 when passing through the entrance/exit 30. .

[4] Positional Relationship Between Front Handrail Portion and Rear Handrail Portion Next, the positional relationship between the front handrail portion 1 and the rear handrail portion 5 will be described with reference to FIGS. 8 and 9. FIG. 8 shows the configuration around the entrance/exit 30, and the illustration of the configuration unrelated to the front handrail portion 1 and the rear handrail portion 5 is omitted as appropriate. FIG. 9 is a cross-sectional view taken along the line A1-A1 of FIG. 8, and the illustration of the configuration unrelated to the front handrail portion 1 and the rear handrail portion 5 is also omitted as appropriate.

First, focusing on the height relationship between the front handrail 1 and the rear handrail 5, at least part of the rear handrail 5 is at the same height as the front handrail 1, as shown in FIG. . That is, the rear handrail portion 5 and the front handrail portion 1 overlap at least partly in the vertical direction D1. In this embodiment, as an example, only the lower end portion of the rear handrail portion 5 is at the same height as the front handrail portion 1 (upper end portion). That is, the positions of the rear handrail 5 and the front handrail 1 overlap in the vertical direction D1 by the distance L1 in FIG. As a result, compared to the case where the positions of the rear handrail 5 and the front handrail 1 do not overlap in the vertical direction D1, it is easier for the passenger H1 to grasp the front handrail 1 and the rear handrail 5 with both hands. Become.

Here, at least a portion of the rear handrail 5 should be at the same height as the front handrail 1. Therefore, the positional relationship shown in FIG. It may be flush with at least part of the portion 1 . Conversely, the entire front handrail 1 may be at least partially level with the rear handrail 5 . Of course, the entire front handrail portion 1 and the entire rear handrail portion 5 may be at the same height. However, in this embodiment, by shifting the positions of the front handrail 1 and the rear handrail 5 in the vertical direction D1, the front handrail 1 and the rear handrail 1 along the width direction (front-rear direction D2) of the entrance/exit 30 are separated from each other. A relatively large interval with the handrail part 5 is ensured.

That is, in this embodiment, as shown in FIG. 8, the lower end of the front handrail portion 1 is positioned lower than the lower end of the rear handrail portion 5 . The upper end of the rear handrail portion 5 is positioned higher than the upper end of the front handrail portion 1 . By arranging the rear handrail portion 5 at a position shifted upward with respect to the front handrail portion 1 in this manner, a relatively large gap can be secured between the rear handrail portion 5 and the front handrail portion 1, and as a result, Specifically, it becomes easier for the passenger H1 to pass between the rear handrail portion 5 and the front handrail portion 1.例文帳に追加Furthermore, for example, when the passenger H1 gets off the boarding section 47, there is also an advantage that it becomes easier to first grasp the rear handrail section 5 which is located at a high position.

Specifically, the lower end of the front handrail portion 1 is positioned downward by a distance L2 from the lower end of the rear handrail portion 5 . The upper end of the rear handrail portion 5 is located above the upper end of the front handrail portion 1 by a distance L3. In the example of FIG. 8, as described above, the positions of the rear handrail 5 and the front handrail 1 overlap at least partially in the vertical direction D1, but this configuration is not essential. That is, when the positions of the rear handrail portion 5 and the front handrail portion 1 in the vertical direction D1 do not at least partially overlap, the rear handrail portion 5 and the front handrail portion 1 are shifted in the vertical direction D1 more greatly. can be placed

In addition, as shown in FIG. 9, in the present embodiment, at least a portion of the rear handrail 5 faces the front handrail 1 in the width direction of the entrance/exit 30 . That is, the positions of the rear handrail portion 5 and the front handrail portion 1 in the left-right direction D3 overlap at least partially. In other words, the front handrail portion 1 and the rear handrail portion 5 have a positional relationship in which the positions in the left-right direction D3 at least partially overlap when viewed from the front (seen from the front) or when viewed from the back (seen from the rear). It is in. In this embodiment, as an example, the entire rear handrail portion 5 faces the front handrail portion 1 in the width direction (the front-rear direction D2) of the entrance/exit 30 . That is, as shown in FIG. 9, the rear handrail portion 5 is arranged so as to fit within the width W10 (in the left-right direction D3 of the front handrail portion 1). This makes it easier for the passenger H1 to grasp the front handrail 1 and the rear handrail 5 with both hands than when the rear handrail 5 and the front handrail 1 do not overlap in the left-right direction D3. Become.

Here, at least part of the rear handrail portion 5 may face the front handrail portion 1 in the width direction of the entrance/exit 30. Therefore, the positional relationship shown in FIG. Only a portion may face at least a portion of the front handrail portion 1 in the width direction of the entrance/exit 30 . Of course, the entire front handrail portion 1 and the entire rear handrail portion 5 may face each other in the width direction of the entrance/exit 30 .

[5] Modifications Modifications of the first embodiment are listed below. Modifications described below can be applied in combination as appropriate.

The shape, dimensions, etc. of the front handrail 1 are not limited to those described in the first embodiment. For example, the cross-sectional shape of the front handrail portion 1 is not limited to a circular shape (perfect circle), and may be an elliptical shape, a polygonal shape, or the like.

Also, the boarding section 47 is not limited to the cabin type, and may be, for example, a canopy type or a floor type. The campy-type or floor-type boarding section 47 does not have a door 23 (cabin door), but is provided with an entrance 30 for the passenger H1 to get on and off of the boarding section 47 . For example, if the boarding section 47 is of the floor type, there is no structure on the upper side of the entrance/exit 30, so the entrance/exit 30 is open upward. That is, the entrance/exit 30 is not limited to a configuration in which four sides are surrounded like a cabin type, and may be configured to be at least partially open.

Further, the entrance/exit 30 is not limited to being arranged on the right side (right side) of the boarding section 47 as in the first embodiment. That is, the entrance/exit 30 may be arranged on at least one side of the boarding section 47 in the left-right direction D3, and may be arranged on the left side (left side) of the boarding section 47, or on both sides in the left-right direction D3. .

Further, the door body 23 is not limited to the front-opening type as in the first embodiment, and may be, for example, a rear-opening type in which the rear side opens, or a bottom-opening type in which the lower side opens. Further, the door body 23 may be movable between a "closed position" that covers the entrance 30 and an "open position" that opens the entrance 30, and is not limited to a configuration in which it rotates about the rotation axis Ax1. For example, it may be a folding door type or a sliding door type.

Also, the number of parts such as the front handrail 1, the rear handrail 5, and the footrest 37 that assist the passenger H1 in getting on and off is not limited to one, and a plurality of parts may be provided. For example, two or more front handrails 1 may be arranged at the front end of the entrance/exit 30 .

In addition, it is not an essential configuration that the leg portion 12 is inclined with respect to the front-rear direction D2. For example, even if the leg portion 12 is L-shaped with a portion extending in the front-rear direction D2 and a portion extending in the left-right direction D3 when viewed from the top (planar view), the front handrail portion 1 extends from the support portion 213 to the rear. side and the center side of the riding portion 47 in the left-right direction D3. Furthermore, the leg portion 12 may have a curved shape such as a C shape, for example, when viewed from above (planar view).

Further, the front handrail portion 1 only needs to protrude from the support portion 213 toward at least one of the rear side and the center side (that is, the left side) of the riding portion 47 in the left-right direction D3. It is not essential to project to For example, the front handrail portion 1 may protrude only rearward from the support portion 213, or may protrude only toward the center (that is, leftward) of the riding portion 47 in the left-right direction D3.

Also, the rear handrail 5 and the footrest 37 are not essential components of the work machine 4, and at least one of the rear handrail 5 and the footrest 37 may be omitted as appropriate. Furthermore, when the rear handrail 5 is used instead of the front handrail 1, the front handrail 1 may be omitted.

(Embodiment 2)
A working machine 4A according to the present embodiment differs from the working machine 4 according to the first embodiment in the shape of a rear handrail portion 5A, as shown in FIG. In the following, configurations similar to those of the first embodiment are denoted by common reference numerals, and descriptions thereof are omitted as appropriate.

In this embodiment, as shown in the balloon in FIG. 10, the rear handrail 5A includes a rear grip 51 for the passenger H1 to grasp (including gripping), lateral legs 53 and vertical grips. It includes legs 54 . The lateral leg portion 53 protrudes forward from the rear support portion 214 and extends along the horizontal direction (here, the front-rear direction D2). The vertical leg portion 54 protrudes upward from the support base 36 and extends along the vertical direction (here, the vertical direction D1). The rear grip portion 51 is provided in a form that connects the distal ends of the horizontal leg portion 53 and the vertical leg portion 54 . The rear grip portion 51 is formed in a shape that is inclined with respect to both the vertical direction D1 and the front-rear direction D2 so as to protrude obliquely upward and rearward from the distal end portion (upper end portion) of the vertical leg portion 54 .

With the rear handrail 5A configured as described above, the passenger H1 can easily grasp not only the rear grip 51 but also the lateral leg 53 or vertical leg 54 or the like. Therefore, for example, when boarding the boarding section 47, the passenger H1 first grabs the vertical leg section 54 of the rear handrail section 5A, and then shifts from the vertical leg section 54 to the rear grip section 51. It is possible to use the rear side handrail portion 5A such that the user grabs the lateral leg portion 53 last. Therefore, the rear handrail portion 5A can be used in more diverse ways, and the work machine 4A can be realized in which more passengers H1 can easily get on and off the riding portion 47. FIG. The configuration of the second embodiment can be employed in appropriate combination with the various configurations (including modifications) described in the first embodiment.

Claims

Equipped with a boarding section where passengers can board,
The boarding section is
a boarding/alighting door arranged in at least one of left and right directions through which the passenger passes;
a front handrail portion arranged at the front end portion of the entrance/exit,
The front handrail portion
Projecting from a support portion located on the front side of the peripheral edge portion of the entrance/exit to at least one of the rear side and the center side of the boarding portion in the left-right direction,
working machine.
The boarding section further includes a rear handrail section arranged at the rear end of the entrance/exit,
The rear handrail protrudes forward from the rear end of the entrance/exit,
A work machine according to claim 1.
At least part of the rear handrail is at the same height as the front handrail,
A work machine according to claim 2.
the lower end of the front handrail portion is positioned lower than the lower end of the rear handrail portion;
The upper end of the rear handrail is positioned higher than the upper end of the front handrail,
A working machine according to claim 2 or 3.
At least part of the rear handrail faces the front handrail in the width direction of the entrance.
The working machine according to any one of claims 2-4.
The boarding section further includes a foot section arranged below a lower end of the boarding opening for supporting the feet of the passenger getting on and off the boarding section.
A working machine according to any one of claims 1-5.
The front handrail protrudes from the support portion to the rear side and to the center side of the riding portion in the left-right direction,
A working machine according to any one of claims 1-6.
The front handrail portion
a gripping portion;
a leg connecting between the support and the grip,
The leg portion is inclined in the front-rear direction so as to approach the center of the riding portion in the left-right direction toward the rear side.
A work machine according to claim 7.
The boarding section has a cabin roof and a cabin frame that supports the cabin roof,
The support portion is part of the cabin frame,
A working machine according to any one of claims 1-8.
The front handrail is arranged in a cabin space surrounded by the cabin frame,
A work machine according to claim 9 .
Used as the front handrail in the work machine according to any one of claims 1 to 10,
Handrail device for working machines.