working machine

Abstract

The work machine is provided with: an operating body that can be switched to a first posture that interferes with the rider of the driver's seat getting on and off and a second posture (Y2) that allows the rider of the driver's seat to get on and off; a plurality of hydraulic actuators that are allowed to act when the operating body is in the first posture and are prevented from acting when the operating body is in the second posture; a manipulation member (62) that operates the plurality of hydraulic actuators; and a mode switching member that switches the operation mode of the manipulation member with respect to the plurality of hydraulic actuators to a plurality of operation modes, the mode switching member being at least partially covered by the operating body so as to be inoperable or difficult to operate when the operating body is in the first posture and being operable to be exposed when the operating body is in the second posture.

Description

TECHNICAL FIELD

[0001] The present application relates to a working machine such as a backhoe excavator. BACKGROUND

[0002] In the past, a working machine disclosed in Patent Literature 1 is known.

[0003] In the working machine disclosed in Patent Literature 1, an operation body is provided laterally of a driver's seat, the operation body including a control stand in which a plurality of hydraulic actuators are operated by a control member. The operation body is configured to be switchable to a first posture in which the driver is hindered from getting on and off the driver's seat and a second posture in which the driver is allowed to get on and off the driver's seat. The plurality of hydraulic actuators are allowed to operate when the operation body is in the first posture and are prevented from operating when the operation body is in the second posture.

[0004] Further, the machine body is equipped with a mode switching member that switches an operation mode of the control member to the plurality of hydraulic actuators to a plurality of operation modes.

[0005] PRIOR ART DOCUMENT

[0006] PATENT LITERATURE

[0007] Patent Literature 1: Japanese Patent Publication "Japanese Patent Application Publication No. 2014-32462" SUMMARY

[0008] PROBLEMS TO BE SOLVED BY THE INVENTION

[0009] As an operation method of the mode switching member, it is recommended to perform the operation of the mode switching member when the operation body is in the second posture. However, in the conventional working machine, the operation of the mode switching member can be performed even when the operation body is in the first posture.

[0010] In view of the above-described problems, an object of the present application is to provide a working machine capable of preventing the operation of the mode switching member in a state where the operation body is in the first posture.

[0011] TECHNICAL SOLUTION FOR SOLVING THE PROBLEMS

[0012] An operation machine according to one embodiment of the present application includes: a machine body; a driver's seat mounted to the machine body; an operation body disposed in the vicinity of the driver's seat and capable of being switched between a first posture that interferes with the driver's getting on and off the driver's seat and a second posture that allows the driver's getting on and off the driver's seat; a plurality of hydraulic actuators that are allowed to operate when the operation body is in the first posture and are prevented from operating when the operation body is in the second posture; a manipulation member that operates the plurality of hydraulic actuators; and a mode switching member that switches an operation mode of the manipulation member with respect to the plurality of hydraulic actuators to a plurality of operation modes, the mode switching member being covered by the operation body and being difficult to operate at least in part when the operation body is in the first posture and being operable to be exposed when the operation body is in the second posture.

[0013] In addition, a plurality of control valves corresponding to the respective hydraulic actuators are provided to hydraulically control the hydraulic actuators, a detection sensor that detects an operation direction and an operation amount of the manipulation member is provided, and a control device that acquires a detection signal from the detection sensor and electrically controls the control valves is provided. The mode switching member is constituted by a switch that sends a switching operation signal corresponding to a switching operation position of the plurality of operation modes to the control device, and the control device has a mode switching portion that switches the operation mode based on the switching operation signal from the mode switching member.

[0014] In addition, the operation body includes a manipulation table disposed laterally of the driver's seat, the manipulation table having the manipulation member mounted thereto, the manipulation table having a manipulation table cover that covers a support structure of the manipulation table in a lower open manner. When the operation body is in the first posture, the mode switching member is positioned at a lower end side of an inner side of the manipulation table cover and at least an upper portion of the mode switching member is positioned at a position higher than a lower end of a wall portion of the manipulation table cover that covers a front side and a lateral side of the mode switching member.

[0015] In addition, a seat table that supports the driver's seat is provided, a rear portion of the manipulation table is pivotally supported to the seat table side, a front portion side is swingable in a vertical direction, and the second posture is switchable by swing operation from the first posture in which the seat table is approached upward. The mode switching member is disposed on the seat table and disposed below a front portion of the manipulation table.

[0016] In addition, when the operation body is in the first posture, the mode switching member is visually confirmable from a gap between the driver's seat and the manipulation table with respect to the switching operation position of the plurality of operation modes.

[0017] Further, the console cover has a side opening portion which opens to the driver seat side at the rear side of the wall portion on the driver seat side, and the mode switching member is arranged at a position which is rearward of a front edge of the side opening portion, and the switching operation positions of the plurality of operation modes can be visually confirmed through the side opening portion.

[0018] Effects of Invention

[0019] According to the work machine described above, the operation of the mode switching member can be performed in the state where the operation body is in the second posture, but the operation of the mode switching member in the state where the operation body is in the first posture can be prevented. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a side view of the work machine.

[0021] Figure 2 is a perspective view showing the cab and the driver section.

[0022] Figure 3 is a structural view showing the control system.

[0023] Figure 4 is a perspective view of the driver section as viewed from the right oblique front.

[0024] Figure 5 is a front view showing the arrangement portion of the mode switching member.

[0025] Figure 6 is a plan view showing the arrangement portion of the mode switching member.

[0026] Figure 7 is a perspective view showing the arrangement portion of the mode switching member.

[0027] Figure 8 is a right side view of the first console.

[0028] Figure 9 is a side view of the driver section.

[0029] Figure 10 is an exploded perspective view of the console cover.

[0030] Figure 11 is a side view enlarged view showing the arrangement portion of the mode switching member.

[0031] Figure 12 is a plan view of the mode switching member.

[0032] Figure 13 is a plan perspective view showing the visual confirmation state of the mode switching member.

[0033] Figure 14is a top perspective view showing another visual confirmation state of the mode switching member.

[0034] Figure 15 is a top perspective view showing another visual confirmation state of the mode switching member. DETAILED DESCRIPTION

[0035] One embodiment of the present application will be described below with appropriate reference to the accompanying drawings.

[0036] Figure 1 is a schematic side view showing the overall structure of the working machine 1 of the present embodiment. In the present embodiment, as the working machine 1, a backhoe excavator which is a swing working machine 1 is exemplified.

[0037] As shown in Figure 1 , the working machine 1 is provided with a machine body (swing base) 2, a traveling device 3, and a working device 4. A cab 5 is mounted on the machine body 2. A driver's seat (sitting place) 6 on which a driver (operator) sits is provided in the cab 5. The driver's seat 6 is surrounded by the cab 5. The driver's seat 6 has a seat portion 6A which is a portion on which the driver sits, and a backrest portion 6B which is a portion on which the back of the driver is received.

[0038] In the present embodiment, a direction toward the front side of the driver (operator) who sits on the driver's seat 6 of the working machine 1 (arrow A1 direction of Figure 1 ) is set as the front, a direction toward the rear side of the driver (arrow A2 direction of Figure 1 ) is set as the rear, a direction of Figure 1 ) is set as the front-rear direction, a left side of the driver (front side of Figure 1 ) is set as the left, and a right side of the driver (inside of Figure 1 ) is set as the right.

[0039] Further, as shown in Figure 1 , a direction orthogonal to the front-rear direction K1, that is, a horizontal direction is explained as a machine body width direction (width direction of the machine body 2). A direction from the central portion of the width direction of the machine body 2 toward the right portion or the left portion is explained as a machine body outer direction (outer direction of the machine body width direction). In other words, the machine body outer direction refers to the machine body width direction and a direction away from the center of the width direction of the machine body 2. A direction opposite to the machine body outer direction is explained as a machine body inner direction (inner direction of the machine body width direction). In other words, the machine body inner direction refers to the machine body width direction and a direction close to the center of the width direction of the machine body 2.

[0040] As shown in Figure 1As shown, the travel device 3 is a device that supports the body 2 so that it can move. The travel device 3 is driven by a travel motor 11, which is composed of a hydraulic motor (hydraulic actuator) or an electric motor. In addition, a tracked travel device 3 is used in this embodiment, but it is not limited to this and a wheeled or other type of travel device may also be used.

[0041] A bulldozing device 7 is installed at the front of the traveling device 3. The bulldozing device 7 has a bulldozing blade 7A, a bulldozing arm 7B fixed to the back side of the bulldozing blade 7A and pivotally supported at the rear on the frame of the traveling device 3 so as to be able to move up and down, and a bulldozing cylinder (hydraulic cylinder) 7C for moving the bulldozing arm 7B up and down.

[0042] The body 2 has a rotating base plate 9 formed of a steel plate or the like forming the bottom. The rotating base plate 9 is supported on the traveling device 3 via a rotating bearing 8 in such a way that it can rotate about a rotating axis X1 extending in the vertical direction. A rotating motor 12, which is a hydraulic motor (hydraulic actuator) that drives the body 2 to rotate about the rotating axis X1, is installed on the rotating base plate 9.

[0043] The rear of the machine body 2 is equipped with a counterweight 10 and a prime mover. The prime mover is a diesel engine. Alternatively, the prime mover can be a gasoline engine, an electric motor, or a hybrid type with both an engine and an electric motor.

[0044] The machine body 2 has a support bracket 20 for supporting the working device 4 and a swing bracket 21 at the front. The support bracket 20 is provided in a protruding manner from the machine body 2. The swing bracket 21 is mounted at the front of the support bracket 20 (the part protruding from the machine body 2) in a manner that allows it to swing about a longitudinal axis (an axis extending in the vertical direction). The swing bracket 21 is driven to swing by a swing cylinder (hydraulic cylinder).

[0045] like Figure 1 As shown, the working device 4 includes a boom assembly 30, a stick assembly 40, and a working tool assembly 50. The boom assembly 30 includes a boom 31 and a boom cylinder (hydraulic actuator) 32. The base of the boom 31 is supported on the upper part of the swing bracket 21 in a swingable (rotatable) manner via a horizontal shaft 35 extending in the width direction of the machine body. The boom cylinder 32 is composed of a telescopic hydraulic cylinder, which is arranged across the middle of the swing bracket 21 and the boom 31, and swings the boom 31 by telescopic extension.

[0046] The stick device 40 includes a stick 41 and a stick cylinder (hydraulic actuator) 42. The base end of the stick 41 is oscillatingly supported on the front end of the boom 31 via a transverse shaft 43. The stick cylinder 42 is a telescopic hydraulic cylinder that spans the base of the stick 41 and the middle of the boom 31, and oscillates the stick 41 by telescoping.

[0047] The work implement device 50 has a bucket 51 as a work implement and a bucket cylinder (hydraulic actuator) 52 as a work implement cylinder. The bucket 51 is swingably supported to the front end portion of the arm 41 via a pivot 57. The bucket cylinder 52 is configured by a hydraulic cylinder capable of extension and contraction, is provided across a link mechanism 53 provided between the bucket 51 and the front end portion of the arm 41 and a base portion of the arm 41, and swings the bucket 51 by extension and contraction.

[0048] As shown in FIG. 1, a door 5A is provided on the side surface (left side surface) of the cab 5. The rear portion of the door 5A is supported by a hinge 13 so as to be turnable about a longitudinal axis, and the front portion is moved to the outside in the vehicle width direction by turning about the hinge 13 to open and close a step 5B. The step 5B is an opening for the driver to get on and off with respect to the cab 5 (the driver's seat 6). Figure 1 As shown in FIG. 1, a door 5A is provided on the side surface (left side surface) of the cab 5. The rear portion of the door 5A is supported by a hinge 13 so as to be turnable about a longitudinal axis, and the front portion is moved to the outside in the vehicle width direction by turning about the hinge 13 to open and close a step 5B. The step 5B is an opening for the driver to get on and off with respect to the cab 5 (the driver's seat 6).

[0049] Figure 2 As shown in FIG. 1, a door 5A is provided on the side surface (left side surface) of the cab 5. The rear portion of the door 5A is supported by a hinge 13 so as to be turnable about a longitudinal axis, and the front portion is moved to the outside in the vehicle width direction by turning about the hinge 13 to open and close a step 5B. The step 5B is an opening for the driver to get on and off with respect to the cab 5 (the driver's seat 6).

[0050] The first operating lever 62L and the second operating lever 62R can each operate two operating objects equipped to the working machine 1. The operating objects of the first operating lever 62L and the second operating lever 62R are, for example, the swing motor 12, the boom cylinder 32, the arm cylinder 42, and the bucket cylinder 52. That is, the operating member 62 can perform the swing operation of the vehicle body 2, the swing operation of the arm 41, the swing operation of the bucket 51, and the swing operation of the boom 31. The operation direction and the swing amount of the first operating lever 62L and the second operating lever 62R (operating member) are detected by a detection sensor 65 (refer to FIG. 2). Figure 3

[0051] In detail, as shown in FIG. 2, the detection sensor 65 is provided on the first operating lever 62L and the second operating lever 62R. The detection sensor 65 is a potentiometer, for example. The detection sensor 65 is provided on the first operating lever 62L and the second operating lever 62R so as to be capable of detecting the operation direction and the swing amount of the first operating lever 62L and the second operating lever 62R. Figure 3 ​​As shown, the operating direction and swing amount of the first joystick 62L are detected by the first detection sensor 65L. The operating direction and swing amount of the second joystick 62R are detected by the second detection sensor 65R. The first detection sensor 65L and the second detection sensor 65R are connected to the control device 66. The control device 66 is capable of acquiring the detection signals from the first detection sensor 65L and the second detection sensor 65R. The control device 66 is configured, for example, using a microcomputer equipped with a CPU (Central Processing Unit) and EEPROM (Electrically Erasable Programmable Read-Only Memory).

[0052] Figure 3 The control system S1 controls the swing motor 12, boom cylinder 32, stick cylinder 42, and bucket cylinder 52. The control system S1 includes a swing control valve V1 for hydraulic control of the swing motor 12, a boom control valve V2 for hydraulic control of the boom cylinder 32, a stick control valve V3 for hydraulic control of the stick cylinder 42, and a bucket control valve V4 for hydraulic control of the bucket cylinder 52. The swing control valve V1, boom control valve V2, stick control valve V3, and bucket control valve V4 are all electrically controlled solenoid valves by the controlled device 66. Detection signals from a first detection sensor 65L and a second detection sensor 65R are sent to the control device 66. Based on the detection signals from the first detection sensor 65L and the second detection sensor 65R, the control device 66 controls the control valves that control the operated objects.

[0053] Here, an example of the operation mode of the first control stick 62L and the second control stick 62R will be described. The first control stick 62L and the second control stick 62R can be tilted in the forward / backward direction K1 (forward and backward) and also in the width direction (left and right). By tilting the first control stick 62L forward and backward, the boom 41 swings; by tilting the first control stick 62L left and right, the machine body 2 rotates. Furthermore, by tilting the second control stick 62R forward and backward, the boom 31 swings; by tilting the second control stick 62R left and right, the bucket 51 swings.

[0054] The control device 66 includes a mode switching unit 66A that switches the operation modes of the operating members 62 for multiple hydraulic actuators to multiple operation modes. In this embodiment, the operation modes can include the aforementioned operation modes and be switched to four operation modes.

[0055] The first operating mode is the operating mode described above.

[0056] In the second operation mode, the body 2 performs a turning action by forward and backward tilting operation of the first operating lever 62L, and the boom 41 performs a swinging action by left and right tilting operation of the first operating lever 62L. In addition, the arm 31 performs a swinging action by forward and backward tilting operation of the second operating lever 62R, and the bucket 51 performs a swinging action by left and right tilting operation of the second operating lever 62R.

[0057] In the third operation mode, the arm 31 performs a swinging action by forward and backward tilting operation of the first operating lever 62L, and the bucket 51 performs a swinging action by left and right tilting operation of the first operating lever 62L. In addition, the boom 41 performs a swinging action by forward and backward tilting operation of the second operating lever 62R, and the body 2 performs a turning action by left and right tilting operation of the second operating lever 62R.

[0058] In the fourth operation mode, the arm 31 performs a swinging action by forward and backward tilting operation of the first operating lever 62L, and the bucket 51 performs a swinging action by left and right tilting operation of the first operating lever 62L. In addition, the boom 41 performs a swinging action by forward and backward tilting operation of the second operating lever 62R, and the body 2 performs a turning action by left and right tilting operation of the second operating lever 62R.

[0059] As shown in FIG. 1, the driver's seat 6 is mounted on a seat stand 67 provided on a floor portion 5C of the cab 5 (the body 2). Figure 2

[0060] As shown in FIG. 1, the seat stand 67 has a first leg portion 67A erected on the floor portion 5C, a second leg portion 67B disposed apart to the right of the first leg portion 67A and erected on the floor portion 5C, and an upper wall portion 67C provided across upper ends of the first leg portion 67A and the second leg portion 67B. The driver's seat 6 is provided on the seat stand 67 via a support stand 68. The support stand 68 has a width in the body width direction formed narrower than a width of the seat stand 67, and the upper wall portion 67C of the seat stand 67 protrudes to the left and right from the support stand 68. The driver's seat 6 is mounted on the support stand 68 in a manner capable of being positionally adjusted in the front-rear direction via a slide rail. Figure 4

[0061] As shown in FIG. 1, the first operating stand 61L is disposed on the left of the driver's seat 6 and above the left portion of the upper wall portion 67C of the seat stand 67, and is mounted and supported to the seat stand 67. Figure 4 Figure 5 Figure 6 As shown in FIG. 1, the first operating stand 61L is disposed on the left of the driver's seat 6 and above the left portion of the upper wall portion 67C of the seat stand 67, and is mounted and supported to the seat stand 67.

[0062] As shown in FIG. 1, the first operating stand 61L is disposed on the left of the driver's seat 6 and above the left portion of the upper wall portion 67C of the seat stand 67, and is mounted and supported to the seat stand 67. Figure 4 Figure 7 Figure 8 ​​​​​​As shown, the control panel 61 has a support structure 69 and a control panel cover 70 that covers the lower part of the support structure 69. The support structure 69 has a frame member 69A on which a first control lever 62L or the like is mounted, a rotation shaft 69B that supports the frame member 69A or the like and is rotatable about an axis extending in the width direction of the body, a support bracket 69C on which the rotation shaft 69B is mounted and is provided on the upper wall portion 67C of the seat 67, and a rotation mechanism 69D that rotates the frame member 69A, etc.

[0063] like Figure 9 As shown, the rotation shaft 69B is disposed on the lower rear end side of the first control panel 61L. Therefore, the first control panel 61L can swing vertically about the pivot support portion (rotation shaft 69B) on the lower rear end side. The first control panel 61L can be switched to... Figure 9 The solid line shows the first posture Y1 and the posture swinging upwards from the first posture Y1. Figure 9 The second pose, Y2, is represented by a double-dotted line. Figure 9 In the side view shown, the lower end of the first control panel 61L, which is located in front of the rotation axis 69B, is positioned close to and approximately parallel to the upper wall portion 67C of the seat platform 67 in the first posture Y1, and is tilted upward as it moves forward in the second posture Y2.

[0064] like Figure 9 As shown by the solid line, in the first posture Y1, the front part of the first control panel 61L protrudes further forward than the seat 6A of the driver's seat 6, and the control lever 63 protrudes forward from the first control panel 61L. Therefore, the first posture Y1 is a posture that hinders the driver from getting on and off the vehicle relative to the driver's seat 6. In detail, the first posture Y1 is a posture that hinders the driver from getting on and off the vehicle via the passageway 71 between the driver's seat 6 and the boarding / alighting opening 5B.

[0065] like Figure 9 As shown by the double-dotted line, in the second posture Y2, the first control panel 61L is tilted upwards as it moves forward, and the operating lever 63 swings upwards together with the first control panel 61L about the rotation axis 69B, retracting from the passenger access passage 71. Therefore, the second posture Y2 is a posture that allows the driver to board and alight relative to the driver's seat 6. More specifically, the second posture Y2 is a posture that allows the driver to board and alight via the passenger access passage 71 between the driver's seat 6 and the passenger access opening 5B.

[0066] In this embodiment, an operating body 72 is configured near the driver's seat 6 by a first control panel 61L and an operating lever 63, and can be switched to a first posture Y1 and a second posture Y2.

[0067] In addition, the operating body 72 can be any component that is located near the driver's seat 6. For example, the operating body 72 can also be a component located in front of the driver's seat 6, and can be a component that can switch between the first posture Y1 and the second posture Y2.

[0068] like Figure 9 As shown, the first control panel 61L has a detection switch 73, an abutment member 74, a pivot 75, a limiting abutment part 76, and a stop member 77. The detection switch 73, the abutment member 74, the pivot 75, and the limiting abutment part 76 are disposed on the rotation mechanism 69D, and the stop member 77 is mounted on a support member 78 fixed on a support bracket 69C.

[0069] like Figure 9 As shown, when the first control panel 61L and the operating lever 63 (operating body 72) are in the first posture Y1, the abutment member 74 abuts against the contact of the detection switch 73, detecting that the first control panel 61L and the operating lever 63 (operating body 72) are in the first posture Y1. Figure 3 As shown, the detection switch 73 is connected to the control device 66. The control device 66 can acquire the detection signal from the detection switch 73. When the control device 66 acquires the detection signal from the detection switch 73, it allows the operation of the swing motor 12, boom cylinder 32, stick cylinder 42, and bucket cylinder 52. That is, when the first control panel 61L and the control lever 63 (operating body 72) are in the first posture Y1, the control device 66 controls the swing control valve V1, boom control valve V2, stick control valve V3, and bucket control valve V4 based on the command signals from the first detection sensor 65L and the second detection sensor 65R.

[0070] Next, as Figure 9As shown, when the first control panel 61L and the control lever 63 (operating body 72) are switched from the first posture Y1 to the second posture Y2 by lifting the control lever 63 upward, firstly, the control lever 63 swings upward about the pivot 75 as shown by the double-dotted line 79, and the abutment member 74 moves away from the contact of the detection switch 73 in conjunction with this. Then, with the abutment member 74 away from the contact of the detection switch 73, the first control panel 61L and the control lever 63 (operating body 72) rotate as a whole about the rotation axis 69B and swing to the second posture Y2. When the abutment member 74 is away from the contact of the detection switch 73 and the control device 66 does not receive a detection signal from the detection switch 73, the control device 66 prevents the operation of the swing motor 12, the boom cylinder 32, the stick cylinder 42, and the bucket cylinder 52. That is, when the first control panel 61L and the control lever 63 (operating body 72) are in the second posture Y2, even if the control device 66 obtains the detection signals from the first detection sensor 65L and the second detection sensor 65R, it will not send control signals to the swing control valve V1, the boom control valve V2, the stick control valve V3 and the bucket control valve V4, and will not control these control valves.

[0071] On the other hand, when the first control panel 61L and the control lever 63 (operating body 72) are in the second posture Y2, the limiting abutment part 76 abuts against the stop member 77, limiting the movement of the first control panel 61L in the direction of rotation from the first posture Y1 to the second posture Y2. In addition, the first control panel 61L is held in the first posture Y1 and the second posture Y2 by the holding mechanism provided in the rotation mechanism 69D.

[0072] like Figure 10 As shown, the control panel cover 70 has an upper cover 81 and a lower cover 82. The upper cover 81 and the lower cover 82 are connected to each other and mounted on the frame member 69A. The upper cover 81 has an outer side wall 81a that is the side wall opposite to the driver's seat 6, an inner side wall 81b that is the side wall on the driver's seat 6 side, a front wall 81c, a rear wall 81d, and an upper wall 81e. The lower cover 82 has an outer side wall 82a that is the side wall opposite to the driver's seat 6, an inner side wall 82b that is the side wall on the driver's seat 6 side, a front wall 82c, and a rear wall 82d. The inner side wall 82b extends rearward from the right edge of the front wall 82c and is formed to the middle of the front-rear direction of the control panel cover 70.

[0073] The outer side wall 70a of the console cover 70 is formed by the outer side wall 81a of the upper cover 81 and the outer side wall 82a of the lower cover 82. The inner side wall 70b of the console cover 70 is formed by the inner side wall 81b of the upper cover 81 and the inner side wall 82b of the lower cover 82. The front wall 70c of the console cover 70 is formed by the front wall 81c of the upper cover 81 and the front wall 82c of the lower cover 82. The rear wall 70d of the console cover 70 is formed by the rear wall 81d of the upper cover 81 and the rear wall 82d of the lower cover 82. The upper wall 81e of the upper cover 81 forms the upper wall of the console cover 70. The lower surface side of the lower cover 82 is open downward. That is, the console cover 70 is open downward.

[0074] As shown in Figure 8 , the console cover 70 has a side opening portion 83 open to the side of the driver's seat 6 at the rear portion side of the inner side wall 70b (the wall portion on the side of the driver's seat 6). The side opening portion 83 is formed by the lower edge 81g of the inner side wall 81b of the upper cover 81 and the rear edge 82g of the inner side wall 82b of the lower cover 82.

[0075] As shown in Figure 4 to Figure 7 , a mode switching member 84 that switches the operation mode of the operating member 62 to a plurality of operation modes is disposed on the side (left side) of the driver's seat 6 and below the first console 61L. The mode switching member 84 is disposed on the upper wall portion 67C on the left side of the support table 68 and on the front portion of the upper wall portion 67C.

[0076] The mode switching member 84 is formed of a rotary switch (switch) and is installed on a base plate 85 installed on the upper wall portion 67C of the seat table 67 so as to be rotatable about a longitudinal axis. As shown in Figure 3 , the mode switching member 84 is connected to the control device 66. The control device 66 can acquire a switching operation signal from the mode switching member 84. When the control device 66 acquires the switching operation signal from the mode switching member 84, the mode switching portion 66A sets the operation mode of the operating member 62 to the operation mode corresponding to the switching operation position of the mode switching member 84. That is, the operation mode is set to any one of the first operation mode to the fourth operation mode.

[0077] As shown in Figure 12As shown, in the front portion of the base plate 85 (around the front portion of the mode switching member 84), an I mark 86A, an H mark 86B, an M mark 86C, and a K mark 86D are provided in this order from the left. The mode switching member 84 is provided with an index portion 84A. By rotating the mode switching member 84 to align the index portion 84A with any one of the I mark 86A, the H mark 86B, the M mark 86C, and the K mark 86D, the switching of the operation mode of the manipulation member 62 can be performed. For example, if the index portion 84A is aligned with the I mark 86A, the mode switching portion 66A switches the operation mode of the manipulation member 62 to the first operation mode, if the index portion 84A is aligned with the H mark 86B, the mode switching portion 66A switches the operation mode of the manipulation member 62 to the second operation mode, if the index portion 84A is aligned with the M mark 86C, the mode switching portion 66A switches the operation mode of the manipulation member 62 to the third operation mode, and if the index portion 84A is aligned with the K mark 86D, the mode switching portion 66A switches the operation mode of the manipulation member 62 to the fourth operation mode.

[0078] As shown in FIG. 6, the mode switching member 84 is provided with an index portion 84A. By rotating the mode switching member 84 to align the index portion 84A with any one of the I mark 86A, the H mark 86B, the M mark 86C, and the K mark 86D, the switching of the operation mode of the manipulation member 62 can be performed. For example, if the index portion 84A is aligned with the I mark 86A, the mode switching portion 66A switches the operation mode of the manipulation member 62 to the first operation mode, if the index portion 84A is aligned with the H mark 86B, the mode switching portion 66A switches the operation mode of the manipulation member 62 to the second operation mode, if the index portion 84A is aligned with the M mark 86C, the mode switching portion 66A switches the operation mode of the manipulation member 62 to the third operation mode, and if the index portion 84A is aligned with the K mark 86D, the mode switching portion 66A switches the operation mode of the manipulation member 62 to the fourth operation mode. Figure 6 , Figure 9 , Figure 11 As shown, the mode switching member 84 is located below the front portion of the first manipulation table 61L and at the lower end of the inner side of the manipulation table cover 70 when the first manipulation table 61L and the lever 63 (the operation body 72) are in the first attitude Y1. Therefore, the mode switching member 84 is covered from above by the first manipulation table 61L (the operation body 72) when the first manipulation table 61L and the lever 63 (the operation body 72) are in the first attitude Y1, and the mode switching member 84 cannot be operated from above. In addition, as shown in FIG. 6, the upper portion of the mode switching member 84 is located above the lower end 82cl of the front wall 82c, which is a wall portion covering the front of the mode switching member 84, and the lower end 82al of the outer side wall 82a, which is a wall portion covering the outer side, when the first manipulation table 61L and the lever 63 (the operation body 72) are in the first attitude Y1. That is, the front wall 82c and the outer side wall 82a become an obstacle when the first manipulation table 61L and the lever 63 (the operation body 72) are in the first attitude Y1, and it is difficult to operate the mode switching member 84 from the front and the outer side (the left side). Figure 5 , Figure 11

[0079] Note that the mode switching member 84 need only have at least the upper portion located above the lower end 82cl of the front wall 82c and the lower end 82al of the outer side wall 82a when the first manipulation table 61L and the lever 63 (the operation body 72) are in the first attitude Y1, and the entire mode switching member 84 can be located above the lower end 82cl of the front wall 82c and the lower end 82al of the outer side wall 82a. ​

[0080] In addition, such as Figure 8 As shown, the mode switching member 84 is located rearward of the leading edge (rear edge 82g of the inner sidewall 82b) of the side opening 83, and is exposed on the right side of the first control panel 61L. However, since the driver's seat 6 is located inside (on the right side) of the first control panel 61L and the gap 87 between the first control panel 61L and the driver's seat 6 is narrow, it is difficult to approach the mode switching member 84 from the driver's seat 6 side. That is, it is difficult to operate the mode switching member 84 from the driver's seat 6 side.

[0081] Furthermore, when the operating body 72 is in the first posture Y1, it is not necessary for the entire mode switching member 84 to be covered from above by the first control panel 61L (operating body 72). It is sufficient that at least a portion of the mode switching member 84 is covered to the extent that operation from the driver's seat 6 becomes difficult or impossible. For example, when the operating body 72 is in the first posture Y1, a portion of the mode switching member 84 may be positioned below the operating body 72, and another portion may be positioned below the space between the driver's seat 6 and the operating body 72. Alternatively, when the operating body 72 is in the first posture Y1, the mode switching member 84 may be positioned extending from below the operating body 72 to below the driver's seat 6. Additionally, it is possible to position the mode switching member 84 below the driver's seat 6, or extending from below the driver's seat 6 to below the space between the driver's seat 6 and the operating body 72, with the sides of the mode switching member 84 covered by the first control panel 61L when the operating body 72 is in the first posture Y1.

[0082] As described above, when the first control panel 61L and the control lever 63 (operating body 72) are in the first posture Y1, the mode switching member 84 cannot be operated or is difficult to operate. Therefore, when the first control panel 61L and the control lever 63 (operating body 72) are in the first posture Y1, it is possible to prevent the mode switching member 84 from being operated when the operation of the hydraulic actuator is permitted.

[0083] On the other hand, such as Figure 9 , Figure 11 As shown, when the first control panel 61L and the operating lever 63 (operating body 72) change from the first posture Y1 to the second posture Y2, the first control panel 61L swings upward about the rotation axis 69B, exposing the mode switching member 84. In this state, the mode switching member 84 can be operated. That is, the mode switching member 84 is operably exposed when the first control panel 61L and the operating lever 63 (operating body 72) are in the second posture Y2. Therefore, when the first control panel 61L and the operating lever 63 (operating body 72) are in the second posture Y2, the mode switching member 84 can be operated even when the operation of the hydraulic actuator is blocked.

[0084] As Figure 11 shown, the first console 61L is inclined so that the lower end shifts upward as it shifts toward the front when in the second attitude Y2, and thus the mode switching member 84 can be easily approached from the front and operated from the front of the first console 61L.

[0085] As Figure 13 shown, in the state where the operation body 72 is in the first attitude Yl, the switching operation position of the mode switching member 84 can be visually confirmed from the gap 87 between the driver's seat 6 and the first console 61L. That is, the mode switching member 84 is disposed at a position from which the switching operation positions of the plurality of operation modes can be visually confirmed from the gap 87 between the driver's seat 6 and the console 61 when the operation body 72 is in the first attitude Yl. Visual confirmation of the switching operation position of the mode switching member 84 can also be performed in a state where the driver is seated on the driver's seat 6. In Figure 13 , a state where a portion of the H mark 86B and the M mark 86C can be seen is shown, but as Figure 14 , Figure 15 shown, by the driver changing the position at which the mode switching member 84 is observed, other marks can also be observed.

[0086] In addition, as Figure 8 shown, the mode switching member 84 is positioned rearward of the front edge of the side opening 83 (the rear edge 82g of the inner side wall 82b). Thus, the switching operation positions of the plurality of operation modes can be easily visually confirmed via the side opening 83.

[0087] In addition, an observation window can also be provided in the console cover 70, and visual confirmation of the mode switching member 84 in the first attitude Yl can be performed via the observation window.

[0088] However, in the working machine 1 in which the control valve that controls the hydraulic actuator is electrically controlled, there is also a method in which the operation mode is switched using an instrument disposed in front of the driver's seat 6, but the change operation of the instrument is troublesome, and the operation mode needs to be displayed on the screen at all times. In addition, in the case where the operation mode is displayed on the instrument, there is a problem in that it is small and difficult to observe, but in the present embodiment, the mode switching member 84 is provided in a switch configuration, and thus such a problem can be eliminated.

[0089] In addition, in the above working machine 1, the change of the operation mode of the operating member 62 can be easily performed before the working machine 1 is delivered by the leasing company, and in addition, the position at which the operation mode of the operating member 62 can be immediately confirmed is present. In addition, confirmation can also be easily performed before the driver gets on the working machine 1.

[0090] In addition, in the present embodiment, the case where the operation mode of the manipulation member 62 is switched by switching of the mode switching member 84 composed of a switch in the system in which the control valve that controls the hydraulic pressure of the hydraulic actuator is electrically controlled has been described, but the present application is not limited thereto, and the case where the operation mode of the manipulation member 62 is switched by switching of the path of the working oil using the mode switching member 84 composed of a rotary valve in the system in which the control valve that controls the hydraulic pressure of the hydraulic actuator is hydraulically controlled can also be adopted.

[0091] The above-described working machine 1 is provided with: a machine body 2; a driver's seat 6 mounted on the machine body 2; an operation body 72 provided in the vicinity of the driver's seat 6 and capable of being switched to a first attitude Yl that hinders the driver from getting on and off the driver's seat 6 and a second attitude Y2 that allows the driver to get on and off the driver's seat 6; a plurality of hydraulic actuators (swing motor 12, boom cylinder 32, arm cylinder 42, bucket cylinder 52) that are allowed to operate when the operation body 72 is in the first attitude Yl and are prevented from operating when the operation body 72 is in the second attitude Y2; a manipulation member 62 that operates the plurality of hydraulic actuators; and a mode switching member 84 that switches the operation mode of the manipulation member 62 with respect to the plurality of hydraulic actuators to a plurality of operation modes, the mode switching member 84 being at least partially covered by the operation body 72 and being difficult or impossible to operate when the operation body 72 is in the first attitude Yl and being operable to be exposed when the operation body 72 is in the second attitude Y2.

[0092] According to this structure, the operation of the mode switching member 84 is possible in a state where the operation body 72 is in the second attitude Y2, but the operation of the mode switching member 84 is prevented in a state where the operation body 72 is in the first attitude Yl.

[0093] In addition, the mode switching member 84 is composed of a switch that transmits a switching operation signal corresponding to the switching operation position of the plurality of operation modes to the control device 66, and the control device 66 has a mode switching section 66A that switches the operation mode based on the switching operation signal from the mode switching member 84, in a configuration in which a plurality of control valves (swing control valve Vl, boom control valve V2, arm control valve V3, bucket control valve V4) that are provided corresponding to the respective hydraulic actuators and that control the hydraulic pressure of the hydraulic actuator, a detection sensor 65 that detects the operation direction and the operation amount of the manipulation member 62, and a control device 66 that acquires the detection signal from the detection sensor 65 and electrically controls the control valves are provided.

[0094] According to this structure, the mode switching member 84 can be configured compactly, and can be arranged compactly.

[0095] Further, the operation body 72 includes a console 61 disposed laterally of the driver's seat 6 and having the manipulation member 62 mounted thereto, the console 61 having a console cover 70 that is open downward of a support structure 69 of the console 61, and the mode switching member 84 is disposed at a lower end side of an inner side of the console cover 70 when the operation body 72 is in the first posture Yl, and at least an upper portion thereof is disposed at a position higher than lower ends 82al, 82cl of wall portions (front wall 82c, outer side wall 82a) of the console cover 70 that cover a front side and a lateral side of the mode switching member 84.

[0096] According to this structure, when the operation body 72 is in the first posture Yl, it is possible to prevent the mode switching member 84 from being operated.

[0097] Further, the seat table 67 that supports the driver's seat 6 is provided, a rear portion of the console 61 is pivotally supported to the seat table 67 side, a front portion side thereof is swingable in the up-down direction, and is switchable to the second posture Y2 by swing operation upward from the first posture Yl in which the seat table 67 is approached, and the mode switching member 84 is disposed on the seat table 67 and disposed below the front portion of the console 61.

[0098] According to this structure, in a state in which the operation body 72 is in the second posture Y2, it is possible to easily operate the mode switching member 84 from the front of the seat table 67.

[0099] Further, the mode switching member 84 is visually confirmable from a gap 87 between the driver's seat 6 and the console 61 of a plurality of operation mode switching operation positions when the operation body 72 is in the first posture Yl.

[0100] According to this structure, even when the operation body 72 is in the first posture Yl, it is possible to confirm the switching operation position of the mode switching member 84.

[0101] Further, the console cover 70 has a lateral opening portion 83 that is open to the driver's seat 6 side at a rear portion side of a wall portion thereof, the mode switching member 84 is disposed at a position further rearward than a front edge (rear edge 82g of the inner side wall 82b) of the lateral opening portion 83, and it is possible to visually confirm the switching operation position of a plurality of operation modes via the lateral opening portion 83.

[0102] According to this structure, it is possible to more easily confirm the operation mode when the operation body 72 is in the first posture Yl.

[0103] The above describes one embodiment of the present application, but it should be considered that the embodiment disclosed this time is illustrative in all respects and is not restrictive. The scope of the present application is not represented by the above description, but is shown by the scope of claims, and is intended to include the meaning and the scope equivalent to the scope of claims and all modifications within the scope.

[0104] Explanation of reference numerals

[0105] 2 body

[0106] 6 driver's seat

[0107] 12 hydraulic actuator (swing motor)

[0108] 32 hydraulic actuator (boom cylinder)

[0109] 42 hydraulic actuator (arm cylinder)

[0110] 52 hydraulic actuator (bucket cylinder)

[0111] 61 console

[0112] 62 operating member

[0113] 65 detection sensor

[0114] 66 control device

[0115] 66A mode switching section

[0116] 67 seat table

[0117] 70 console cover

[0118] 72 operation body

[0119] 82a wall portion (outer wall of lower cover)

[0120] 82a1 lower end

[0121] 82c wall portion (front wall of lower cover)

[0122] 82c1 lower end

[0123] 82g front edge (rear edge of inner wall of lower cover)

[0124] 83 side opening

[0125] 84 mode switching member

[0126] 87 gap

[0127] V1 control valve (control valve for swing)

[0128] V2 control valve (control valve for boom)

[0129] V3 control valve (control valve for arm)

[0130] V4 control valve (control valve for bucket)

[0131] Y1 first posture

[0132] Y2 Second posture.

Claims

1. A work machine, comprising: a machine body; a driver's seat mounted to the machine body; an operation body disposed in the vicinity of the driver's seat and capable of being switched between a first posture that interferes with the driver's getting on and off the driver's seat and a second posture that allows the driver's getting on and off the driver's seat; a plurality of hydraulic actuators that are allowed to operate when the operation body is in the first posture and are prevented from operating when the operation body is in the second posture; an operation member that operates the plurality of hydraulic actuators; and a mode switching member that switches an operation mode of the operation member with respect to the plurality of hydraulic actuators to a plurality of operation modes, the mode switching member being covered by the operation body and being difficult or impossible to operate when the operation body is in the first posture, and being operable to be exposed when the operation body is in the second posture, the operation body including an operation table disposed laterally of the driver's seat, the operation table having the operation member mounted thereto, the mode switching member being capable of being visually confirmed by the driver seated on the driver's seat from a gap between the driver's seat and the operation table when the operation body is in the first posture.

2. The work machine according to claim 1, wherein the work machine comprises: a plurality of control valves disposed corresponding to the respective hydraulic actuators and performing hydraulic control of the hydraulic actuators; a detection sensor that detects an operation direction and an operation amount of the operation member; and a control device that acquires a detection signal from the detection sensor and electrically controls the control valves, the mode switching member being constituted by a switch that sends a switching operation signal corresponding to a switching operation position of the plurality of operation modes to the control device, the control device having a mode switching section that switches the operation mode based on the switching operation signal from the mode switching member.

3. A work machine, comprising: a machine body; a driver's seat mounted to the machine body; an operation body disposed in the vicinity of the driver's seat and capable of being switched between a first posture that interferes with the driver's getting on and off the driver's seat and a second posture that allows the driver's getting on and off the driver's seat; a plurality of hydraulic actuators that are allowed to operate when the operation body is in the first posture and are prevented from operating when the operation body is in the second posture; an operation member that operates the plurality of hydraulic actuators; and a mode switching member that switches an operation mode of the operation member with respect to the plurality of hydraulic actuators to a plurality of operation modes, the mode switching member being covered by the operation body and being difficult or impossible to operate when the operation body is in the first posture, and being operable to be exposed when the operation body is in the second posture, the operation body including an operation table disposed laterally of the driver's seat, the operation table having the operation member mounted thereto, the operation table having an operation table cover that covers a support structure of the operation table in a lower open shape. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The mode switching member is positioned at a lower end side of an inner side of the console cover and at least an upper portion thereof is positioned at a position higher than a lower end of a wall portion of the console cover covering a front side and a side side of the mode switching member when the operator is in the first posture.

4. The work machine according to any one of claims 1 to 3, wherein the work machine is provided with a seat table that supports the driver's seat, a rear portion of the console is pivotally supported at the seat table side, a front portion side is swingable in an up-down direction, and is switchable to the second posture by swing operation upward from the first posture in which the console is close to the seat table, the mode switching member is disposed on the seat table and below a front portion of the console.

5. The work machine according to any one of claims 1 to 3, wherein the mode switching member is visually confirmable from the gap between the driver's seat and the console from the driver seated on the driver's seat when the operator is in the first posture.

6. The work machine according to claim 1, wherein the console has a console cover that is open downward and covers a support structure of the console, the console cover has a side opening portion that is open to the driver's seat side at a rear portion side of a wall portion of the console cover at the driver's seat side, the mode switching member is disposed at a position behind a front edge of the side opening portion and the switching operation positions of the plurality of operation modes are visually confirmable through the side opening portion.

Images