JP2000303498A - Construction machinery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the construction machinery capable of efficiency controlling a tilt type handle device and a spring-up console device when an operator gets on and off an operator's seat by interlocking both of them with each other. SOLUTION: A handle-console interlocking device 31 is provided between a handle device 14 and a console device 15. When the console device 15 is provided to a spring-up position D from a control position C by means of a lever 22 for getting on and off, the handle device 14 is pivoted to an upward position B from an inclined position A by means of limit switches 32, 34, 36 and 38, a directional selector valve 40, a hydraulic cylinder 35 or the like. When the console device 15 is also pivoted to the control position C from the spring-up position D, the handle device 14 is pivoted to the inclined position A from the upward position B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction machine suitably used, for example, as a wheel-type hydraulic excavator, a wheel-type crane, a wheel loader, and the like, and more particularly to a construction including a tilt-type handle device and a flip-up console device. And construction machinery.

[0002]

2. Description of the Related Art In general, as construction machines such as hydraulic shovels, there are known crawler-type hydraulic shovels that run using crawler tracks provided on vehicles and wheel-type hydraulic shovels that run using wheels. .

A conventional construction machine of this type includes an inclined position which is located in front of a driver's seat to steer a vehicle body and is inclined toward a driver's seat when an operator operates a steering wheel. There is a known type that includes a tilt-type handle device that is rotated forward and backward between an upward position and an upward position (for example, Japanese Utility Model Laid-Open No. 5-75).
No. 055).

On the other hand, as another prior art, a console having an operation lever beside a driver's seat has an operation position operated by an operator sitting on the driver's seat, and a jumping position which is jumped upward from the operation position. There is also known a device provided with a console device that is turned upward and downward between the above (for example, Japanese Utility Model Laid-Open No. 6-85456).

[0005] Here, the handle device is disposed, for example, in a cab of a hydraulic shovel, is located in front of a driver's seat, protrudes from a floor plate of the cab, and is attached to a tip end side of the leg. The handle support portion is pivoted forward and backward between an upward position and an inclined position, as will be described later, and a handle provided on the distal end side of the handle support portion. Further, a lock mechanism is provided between the leg and the handle support for locking the handle support to the inclined position or the upward position.

When the steering wheel is held at the inclined position, the operator can sit on the driver's seat and operate the steering wheel in a natural posture. Further, when the steering wheel is in the upward position, a sufficient space is formed between the driver's seat and the steering wheel, so that the operator of the excavator can smoothly perform the operation of getting on and off the driver's seat.

On the other hand, the console device has a console provided with an operation lever for operating the front of a hydraulic shovel or the like. The console pivots upward and downward between the operating position and the jumping position, for example, with the rear side serving as a pivot point. In this case, when the console is in the operation position, the operation lever is arranged on the front side of the driver's seat that is easy for the operator to operate.

When the operator gets out of the driver's seat to the outside, for example, the operator turns the console upward from the operation position to the jumping position by operating a boarding / leaving lever provided near the console. . As a result, the console is jumped obliquely rearward with the operation lever, so that the operator can get out of the driver's seat using the space formed in front of the console device in the cab.

[0009]

In the above-mentioned prior art, a tilt-type steering device is provided in front of the driver's seat, and a flip-up type console device is provided beside the driver's seat. When the driver gets off the driver's seat, the steering wheel is turned forward from the inclined position to the upward position, and the console is turned upward from the operating position to the jumping position using the getting on / off lever, thereby driving the vehicle. A sufficiently large space from the seat to the entrance is formed in the cab.

For this reason, every time the operator gets out of the driver's seat to the outside, the operator turns the steering wheel upward,
It is necessary to perform the operation of raising the console separately from each other, and when sitting in the driver's seat from the outside, the operation of tilting the handle and the operation of pressing down the console must be performed. For example, there is a problem that even when the driver leaves the driver's seat only for a short time, such as when checking the front of the vehicle during civil engineering work, the getting on / off operation takes time.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to make it possible to easily operate a steering wheel device and a console device when getting on and off a driver's seat. Another object of the present invention is to provide a construction machine capable of improving the vehicle height and efficiently getting on and off the driver's seat.

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a vehicle body provided with a driver's seat on which an operator sits and an entrance port for getting on and off the driver's seat, and steering the vehicle body. Therefore, it is provided on the vehicle body in front of the driver's seat, and is provided between an inclined position inclined toward the driver's seat side when steering a steering wheel and an upward position arranged more upward than the inclined position. A handle device pivoted rearward, and an operation position provided on the vehicle body at a side of the driver's seat and having a control lever and operated by an operator seated in the driver's seat; The present invention is applied to a construction machine having a console device that is turned upward and downward between a jump position that is jumped upward from an operation position.

A feature of the structure adopted by the first aspect of the present invention is that, between the handle device and the console device, when the console device is in the operation position, the handle device is turned to the inclined position, There is provided a handle-console interlocking device for rotating the handle device to the upward position when the device is in the jumping position.

With this configuration, for example, when the operator is seated in the driver's seat, the console device is rotated from the jumping position to the operating position,
Using the handle-console interlocking device, the handle device can also be rotated from the upward position in conjunction with the inclined position. Also, when the operator gets off the driver's seat, by turning the console device from the operation position to the jumping position, the handle device can be turned in conjunction with the upward position from the inclined position.

According to a second aspect of the present invention, there is provided a steering wheel-console interlocking device, comprising: console position detecting means for detecting that the console device is at an operating position or a jumping position; An actuator that pivots to an upward position, a handle position detection unit that detects that the handle device rotated by the actuator has become an inclined position or an upward position, and a console position detection unit and a handle position detection unit. Actuator driving means for driving the actuator so as to rotate the handle device in conjunction with the movement of the console device using the output detection signal.

Thus, for example, when the console device is turned from the operating position to the jumping position, this turning operation can be detected by the console position detecting means, and the actuator outputs a detection signal output from the console position detecting means. Can be used to rotate the handle device from the inclined position to the upward position. Then, the handle position detecting means can detect that the handle device has reached the upward position, and the actuator driving means uses the detection signals output from the handle position detecting means and the console position detecting means to turn the handle device upward. When the position is reached, the actuator can be stopped.

On the other hand, a feature of the structure adopted by the invention of claim 3 is that, between the console device and the handle device, when the handle device is in the inclined position, the console device is rotated to the operation position, Handle for pivoting the console device to the up position when the device is in the up position;
It has a console interlocking device.

Thus, when the operator takes off and sits on the driver's seat, the handle device is rotated between the inclined position and the upward position, and the console device is operated by the handle-console interlocking device in conjunction with the rotation. It can be rotated between the operation position and the jumping position.

According to a fourth aspect of the present invention, there is provided a steering wheel-console interlocking device, wherein: a steering wheel position detecting means for detecting that the steering wheel device has reached an operating position or a jumping position; An actuator rotating to a jumping position, console position detecting means for detecting that the console device rotated by the actuator has reached an operating position or a jumping position, the handle position detecting means and the console position detecting means And actuator driving means for driving the actuator so as to rotate the console device in conjunction with the movement of the handle device using the detection signal output from the control device.

Thus, for example, when the handle device is turned from the inclined position to the upward position, this turning operation can be detected by the handle position detecting means, and the actuator outputs a detection signal output from the handle position detecting means. The console device can be used to rotate the console device from the operation position to the jumping position. Then, the console position detecting means can detect that the console device has reached the jumping position, and the actuator driving means uses the detection signals output from the console position detecting means and the handle position detecting means to detect the console device. The actuator can be stopped when it reaches the jump position.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, as a construction machine according to an embodiment of the present invention, a wheel type hydraulic excavator will be described as an example.
This will be described in detail with reference to FIGS. Here, FIGS. 1 to 7 show a first embodiment according to the present invention.

Reference numeral 1 denotes a lower traveling body of the excavator, and the lower traveling body 1 is provided with a plurality of wheels 2, 2,. Reference numeral 3 denotes an upper revolving structure that is rotatably mounted on the lower traveling structure 1. A revolving frame 4 of the upper revolving structure 3 includes a cab 5 having an operator's cab formed therein, and a motor and the like therein. A building cover 6 in which a machine room (both not shown) for housing is formed, a counterweight 7 and the like are provided.

A driver's seat 8 is provided at the center of the cab 5 as shown in FIG.
A handle device 14 described below is provided. On the left side of the driver's seat 8, a console device 15 described below is disposed between the driver's seat 8 and the entrance 9 (see FIG. 1).

A front 10 is provided on the front side of the upper revolving unit 3 so as to be able to move upward and downward. As shown in FIG. 1, the front end of the front 10 is attached to the revolving frame 4 and is raised by a boom cylinder 11A. A boom 11 to be moved, and an arm cylinder 12 attached to a distal end side of the boom 11.
An arm 12 is turned by A, and a bucket 13 and the like are attached to the distal end of the arm 12 and turned by a bucket cylinder 13A.

In the hydraulic shovel, hydraulic oil discharged from a hydraulic pump 41, which will be described later, is supplied to a hydraulic circuit including hydraulic cylinders 11A, 12A, 13A of a front 10, a traveling motor, a swing motor, and the like. (Not shown)
Excavation of earth and sand and the like is performed using the boom 11, the arm 12, the bucket 13, and the like, and at the same time, the upper swing body 3 is turned to make the vehicle travel.

Reference numeral 14 denotes a tilt-type handle device provided at the front center of the driver's seat 8 in the cab 5, and the handle device 14 is a leg 14A protruding from a floor plate in the cab 5.
And a handle support portion 14B attached to the distal end side of the leg portion 14A and rotated forward and backward by a hydraulic cylinder 35 described later. The handle support portion 14B is rotatably provided to steer the wheel 2. The handle 14C is operated by an operator when the user performs the operation.

The handle device 14 is operated in conjunction with the console 18 by a handle-console interlocking device 31 to be described later.
B, handle 14C, etc., as shown in FIG.
Inclination position (A) where C inclines backward toward driver's seat 8
Between an upward position (B) where the handle 14C is disposed upward from the inclined position (A) as shown in FIG.
It is rotated backward.

Reference numeral 15 denotes a console device provided in the cab 5 on the left side of the driver's seat 8 via a pedestal portion 16. As shown in FIGS. 2 to 5, the console device 15 has a console mounting portion 17, which will be described later. It is composed of a console 18, a gas spring 21, a getting on / off lever 22, a lock mechanism 25, and the like.

Reference numeral 17 denotes a console mounting portion fixed on the pedestal portion 16. The console mounting portion 17 has a structure shown in FIGS.
As shown in the figure, a mounting bracket 17A for the console 18 and a mounting bracket 17B for the gas spring 21 are integrally provided.

A console 18 is provided on the console mounting portion 17 so as to be rotatable upward and downward.
As shown in FIGS. 3 to 5, the body 8 is constituted by a frame 19 whose main body is formed in a substantially box shape using, for example, a metal plate, a resin plate or the like. By attaching a panel member made of a metal plate, a resin plate, or the like to the left and right side surfaces, it is formed in a substantially box shape having an open lower side.

On the rear side of the frame 19, a pair of mounting brackets 19A, 19A (only one is shown) rotatably pin-connected to the mounting bracket 17A of the console mounting portion 17 are provided. Thereby, the console 18
Is turned up and down between an operation position (C) shown in FIG. 3 and a jumping position (D) shown in FIG. On the lower front side of the frame 19, a substantially U-shaped mounting bracket 19B is fixed.

Reference numeral 20 denotes a left operating lever provided on the front upper portion of the console 18 so as to be capable of tilting operation. As shown in FIG. It is connected to a pilot operation valve (not shown) for controlling the supply amount. This allows
The operation lever 20 is for raising and lowering the front 10 and for turning the upper swing body 3.

Reference numeral 21 denotes a mounting bracket 1 of the console mounting portion 17.
The gas spring 21 is provided between the mounting bracket 7B and the mounting bracket 19B of the console 18, and the gas spring 21 constantly biases the console 18 from the operation position (C) to the jumping position (D).

Reference numeral 22 denotes a boarding / leaving lever mounted on a side plate or the like of the pedestal portion 16 by means of a connecting pin 23 so as to be rotatable upward and downward. An arm 22A is provided integrally, and a tip end of the rotating arm 22A is connected to a slide plate 28 described later using a push-pull cable 24. Also, the getting on / off lever 22
Is connected to, for example, a switching valve provided in a hydraulic circuit via another push-pull cable, a signal line (neither is shown), or the like. The entry / exit lever 22 is provided with a blocking position for disconnecting between the driver's seat 8 and the entrance 9 as shown in FIG. 2 and an opening position for opening between the driver's seat 8 and the entrance 9 as shown in FIG. Are rotated integrally with the rotating arm 22A.

In this case, when the getting on / off lever 22 is at the shut-off position, the console 18 is held at the operating position (C). On the other hand, when the getting on / off lever 22 is turned to the open position, the console 18 is turned to the jumping position (D).

Reference numeral 25 denotes a lock mechanism provided between the driver's seat 8 and the console 18. The lock mechanism 25 includes a support pin 2 provided on the driver's seat 8 side as shown in FIGS.
The slide plate 28 has a slide plate 28 supported so as to be slidable forward and backward, and an engagement groove 28A is provided at the front end side of the slide plate 28.

The slide plate 28 is supported by the support pins 27.
When the lever 22 is urged forward by a tension spring 29 provided between the slide plate 28 and the boarding / leaving lever 22 at the shut-off position, the lock pin 30 fixed to the mounting bracket 19B of the console 18 has By engaging in the engagement groove 28A, the console 18 is moved to the operation position (C).
To lock. When the getting-on / off lever 22 is turned to the open position, the slide plate 28 is pulled backward by the push-pull cable 24 or the like against the tension spring 29, and the lock pin 30 is disengaged from the engagement groove 28A. As a result, the console 18 is turned to the jumping position (D) by the gas spring 21.

Reference numeral 31 denotes a handle-console interlocking device (hereinafter referred to as an interlocking device 31) attached to the handle device 14, and the interlocking device 31 includes limit switches 32 and 34 on the console device 15 side as shown in FIG. , A hydraulic cylinder 35, limit switches 36 and 38 on the handle device 14 side, relays 37 and 39, a direction switching valve 40, and the like. Then, the interlocking device 31 rotates the handle 14C of the handle device 14 and the like to the inclined position (A) when the console 18 is at the operation position (C),
When the console 18 reaches the jumping position (D),
The handle 14C and the like are turned to the upward position (B).

Reference numeral 32 denotes a limit switch as console position detecting means for detecting that the console 18 has reached the operating position (C). The limit switch 32 has one terminal side which is controlled in direction via a contact 37 B of a relay 37. The valve 40 is connected to the electromagnetic pilot portion 40 </ b> B, and the other terminal side is connected to the battery 33. Then, the limit switch 32 is closed when the console 18 is at the operation position (C), and remains open at other positions.

Reference numeral 34 denotes another limit switch which constitutes console position detecting means together with the limit switch 32.
The limit switch 34 has a relay 39 on one terminal side.
Is connected to the electromagnetic pilot section 40A of the direction control valve 40 via the contact 39B, and the other terminal side is connected to the battery 33. Then, the limit switch 34 is closed when the console 18 reaches the jumping position (D),
At other positions, the open state is maintained and the console 18 detects that the console 18 has reached the jumping position (D).

Numeral 35 is a hydraulic cylinder as an actuator provided between the leg 14A of the handle device 14 and the handle support 14B so as to be extendable and contractible.
5, two oil chambers 35A and 35B are defined by the piston. The hydraulic cylinder 35 is extended, for example, by supplying pressure oil to the oil chamber 35A, and at this time, rotates the handle 14C and the like from the inclined position (A) to the upward position (B). The hydraulic cylinder 35 is contracted by supplying pressure oil to the oil chamber 35B, and at this time, the handle 14C and the like are turned from the upward position (B) to the inclined position (A).

Reference numeral 36 indicates that the handle device 14 is
5 is a limit switch as a handle position detecting means for detecting that the handle has been turned to the tilt position (A). The limit switch 36 has one terminal connected to the exciting coil 37A of the relay 37 and the other terminal connected to the other terminal. Battery 3
3 is connected. And the limit switch 36
Is closed when the handle device 14 is in the inclined position (A), and is kept open at other positions.

A relay 37 is switched by a limit switch 36. The relay 37 includes an exciting coil 37A connected to the limit switch 36 and a console 18.
Between the limit switch 32 and the electromagnetic pilot portion 40B of the direction control valve 40.
And a normally closed contact 37B which is opened by the contact.

The relay 37 normally connects the limit switch 32 and the electromagnetic pilot section 40B, and the handle device 14 is tilted (A) by the hydraulic cylinder 35.
Is closed, the limit switch 36 is closed, the contact 37B is opened to cut off the connection between the limit switch 32 and the electromagnetic pilot unit 40B, and the hydraulic cylinder 35 is stopped in a reduced state. Has become.

Reference numeral 38 denotes another limit switch which constitutes a handle position detecting means together with the limit switch 36. One end of the limit switch 38 is connected to the exciting coil 39A of the relay 39, and the other terminal is connected to the battery 33. Have been. And the limit switch 36
Is closed when the handle device 14 is in the upward position (B), and is kept open at other positions, whereby the handle device 14 is in the upward position (B).
Is detected.

A relay 39 is switched by a limit switch 38. The relay 39 includes an exciting coil 39A connected to the limit switch 38 and a console 18
Between the limit switch 34 and the electromagnetic pilot portion 40A of the direction control valve 40.
And a normally closed contact 39B that is opened by the contact.

The relay 39 normally connects the limit switch 34 and the electromagnetic pilot section 40A. When the handle device 14 is turned to the upward position (B) by the hydraulic cylinder 35, the limit switch 38 is closed. By doing so, the contact 39B is opened to shut off the connection between the limit switch 34 and the electromagnetic pilot section 40A, and the hydraulic cylinder 35 is stopped in the extended state.

Reference numeral 40 denotes an electromagnetic pilot type directional switching valve as actuator driving means provided connected to the hydraulic cylinder 35. The directional switching valve 40 is provided with electromagnetic pilot portions 40A and 40B. When the power supply to the sections 40A and 40B is stopped, the direction switching valve 40 is held at the neutral position (A).

When the directional control valve 40 is switched to the switching position (b) by energizing the electromagnetic pilot section 40A, the directional switching valve 40 supplies the pressure oil from the hydraulic pump 41 to the oil chamber 35A and the pressure in the oil chamber 35B. The hydraulic cylinder 35 is extended by returning the oil to the tank 42. When the direction switching valve 40 is switched to the switching position (C) by energizing the electromagnetic pilot portion 40B, the pressure oil in the oil chamber 35A is returned to the tank 42, and the pressure oil is supplied to the oil chamber 35B. The hydraulic cylinder 35 is reduced.

The hydraulic shovel according to the present embodiment has the above-described configuration, and its operation will be described next.

First, before the operator gets on the cab 5, the getting on / off lever 22 has been turned to the open position at the end of the previous operation, and the console 18, the operating lever 20 and the like are also in the jumping position (D). Hold and handle device 1
4 is also held at the upward position (B).

As a result, since the limit switch 32 is opened at the jumping position (D), the electromagnetic pilot portion 40B of the directional control valve 40 is not energized. Further, since the limit switch 38 is closed at the upward position (B), the contact 39B of the relay 39 is open, and the electromagnetic pilot unit 40A is also not energized. Thus, the direction switching valve 40 is held at the neutral position (a).

When the operation of the hydraulic excavator is started in this state, the operator gets into the cab 5 from the entrance 9 and sits on the driver's seat 8.

Then, when the operator turns the lever 22 from the open position to the closed position, the switching valve of the hydraulic circuit is actuated by the lever 22 via a push-pull cable, a signal line, etc. Becomes a drivable state.

In the interlocking device 31 shown in FIG. 7, the limit switch 36 is opened when the handle device 14 is in the upward position (B), and the contact 3 of the relay 37 is turned on.
7B is in a closed state.

When the operator pushes the console 18 downward against the gas spring 21 in this state, the console 18 is locked to the operation position (C) by the lock mechanism 25 and the limit switch 32 is closed. I do. As a result, the directional control valve 40 allows the electromagnetic pilot unit 40B to switch from the battery 33 to the limit switch 32,
When the power is supplied through the contact 37B of the relay 37, the switching position (C) is set. Thereby, the hydraulic cylinder 35
Is reduced, and the handle 14C and the like of the handle device 14 are turned from the upward position (B) toward the inclined position (A).

When the handle 14C reaches the inclined position (A), the limit switch 36 is closed. Thereby, the contact 37B of the relay 37 is opened, and the energization to the electromagnetic pilot unit 40B is stopped. As a result, the direction switching valve 40 returns to the neutral position (A), and the handle device 14 is tilted (A) by the hydraulic cylinder 35 as shown in FIG.
Is held.

On the other hand, during the operation of the hydraulic excavator, the console 18 is locked at the operating position (C), and the handle device 14 is held at the inclined position (A). This allows
Since the limit switch 38 is opened at the inclined position (A), the contact 39B of the relay 39 is closed.

When the operation of the hydraulic excavator is interrupted or stopped in this state, for example, when the operator turns the getting on / off lever 22 to the open position, the console 18 is turned on.
Is released from the state where it is locked to the operation position (C) by the lock mechanism 25, and is turned to the jumping position (D) by the gas spring 21.

As a result, when the limit switch 34 is closed at the jumping position (D), the directional control valve 40 is energized by the electromagnetic pilot portion 40A, and is brought to the switching position (B). As a result, the hydraulic cylinder 35 extends, and the handle device 14
Of the handle 14C is rotated from the inclined position (A) to the upward position (B).

When the handle 14C reaches the upward position (B), the limit switch 38 is closed.
Thereby, the contact 39B of the relay 39 is opened, and the power supply to the electromagnetic pilot unit 40A is stopped. As a result, the direction switching valve 40 returns to the neutral position (A), and the handle 14C
Is held at the upward position (B) by the hydraulic cylinder 35 as shown in FIG.

Thus, in the present embodiment, since the handle-console interlocking device 31 is attached to the handle device 14, for example, when the operator sits on the driver's seat 8, the operator raises the console 18 to the jumping position (D ) To the operating position (C), the handle-console interlocking device 31 can easily rotate the handle device 14 from the upward position (B) to the inclined position (A) in conjunction with this. it can. Also, when the operator gets out of the driver's seat 8, the handle device 14 is simply rotated from the operation position (C) to the jumping position (D) by using the getting on / off lever 22 to move the handle device 14 to the inclined position (A). ) To the upward position (B).

Therefore, the operator can operate the console 18 only when the user gets on and off the driver's seat 8 to rotate the console 18 and the steering wheel device 14 together with one touch, thereby ensuring the operability of these operations. And the driver can get on and off the driver's seat 8 efficiently.

The handle-console interlocking device 31
A limit switch 32 for detecting that the console 18 has reached the operating position (C) or the jumping position (D),
34, a hydraulic cylinder 35 for turning the handle device 14 to the inclined position (A) or the upward position (B) using the detection results of the limit switches 32, 34, and the handle device 14 for the tilt position (A) or the upward position. It is composed of limit switches 36 and 38 for detecting that the position (B) has been reached, and a directional control valve 40 for driving the hydraulic cylinder 35 using the detection results of the limit switches 32, 34, 36 and 38, and the like. For example, when the console 18 is turned from the operation position (C) to the jumping position (D),
The turning operation can be detected by the limit switch 34, and the hydraulic cylinder 35 can be used to smoothly turn the handle device 14 from the inclined position (A) to the upward position (B) using the detection result.

Further, it can be detected by the limit switch 38 that the handle device 14 has reached the upward position (B), and by using the detection result, the hydraulic cylinder 35 can be reliably moved to the upward position (B) by the direction switching valve 40. In addition to stopping, the handle device 14, the hydraulic cylinder 35 and the like can be protected.

Next, FIG. 8 shows a second embodiment according to the present invention. In this embodiment, the same reference numerals are given to the same components as those in the first embodiment, and the description will be given. It shall be omitted. However, the feature of the hydraulic excavator according to the present embodiment is that when the handle is turned, the handle-
The configuration is such that the console is linked using a console linking device.

Reference numeral 51 denotes a handle device provided in front of the driver's seat 8. The handle device 51 is substantially the same as the handle device 14 according to the first embodiment, and has legs 51A, a handle support 51B, and a handle 51C. And so on. However, a damper 52 for urging the handle support portion 51B from the inclined position (A) toward the upward position (B) is provided between the leg portion 51A and the handle support portion 51B so as to be extendable and contractable. Is provided with a lock mechanism 52A that locks the handle support 51B at the inclined position (A) by, for example, an operator's manual operation.

Reference numeral 53 denotes a console device provided on the side of the driver's seat 8. The console device 53 includes a console mounting portion (not shown), similar to the console device 15 according to the first embodiment. A console 54 is attached to the console attachment portion so as to be pivotable upward and downward, and pivots between an operation position (C) and a jumping position (D). However, a hydraulic cylinder 58 described later is provided between the console mounting portion and the console 54 instead of the gas spring 21 of the first embodiment.

Reference numeral 55 denotes a handle-console interlocking device attached to the console 54. The interlocking device 55 includes limit switches 56 and 57, a hydraulic cylinder 58,
Limit switches 59 and 62, relays 60 and 63,
It comprises a direction switching valve 64 and the like. Then, the interlocking device 55 rotates the console 54 to the operation position (C) when the handle device 51 is in the inclined position (A), and when the handle device 51 is in the upward position (B),
The console 54 is rotated to the jumping position (D).

Reference numeral 56 denotes the tilted position (A) of the handle device 51.
The limit switch 56 is closed when the handle 51C of the handle device 51 is in the inclined position (A), and is opened otherwise. Keep state.

Reference numeral 57 denotes a limit switch as another handle position detecting means for detecting that the handle device 51 has reached the upward position (B).
7 closes when the handle device 51 is at the upward position (B), and keeps the open state otherwise.

Reference numeral 58 denotes a hydraulic cylinder as an actuator provided on the console 54 so as to be extendable and contractable. The hydraulic cylinder 58 is substantially the same as the hydraulic cylinder 35 of the first embodiment in that the direction switching valve 64 has a neutral position ( When the switching position (b) is changed from (a) to the switching position (b), the console 54 is contracted and rotated to the operating position (C). It rotates to the jumping position (D).

Reference numeral 59 denotes a console 54 in which a hydraulic cylinder 58
Is a limit switch as console position detecting means for detecting that the console 54 has been turned to the operation position (C). The limit switch 59 is closed when the console 54 is at the operation position (C). In the position, the open state is maintained.

A relay 60 is selectively driven by a limit switch 59. The relay 60 includes an exciting coil 60A connected to the limit switch 59 and a limit switch 56 on the handle device 51 side connected to the battery 61.
And a normally closed contact 60B that is provided between the electromagnetic coil portion 60A and the electromagnetic pilot portion 64A of the direction control valve 64, and is opened by energizing the exciting coil 60A.

The relay 60 always connects the limit switch 56 to the electromagnetic pilot portion 64A, and when the console 54 is turned to the operating position (C) by the hydraulic cylinder 58, the limit switch 59 is closed. As a result, the contact 60B is opened and the limit switch 5
The configuration is such that the hydraulic cylinder 58 is stopped in a contracted state by shutting off the connection between the sixth side and the electromagnetic pilot portion 64A.

Reference numeral 62 denotes a position at which the console 54 is moved up (D).
And a limit switch as another console position detecting means for detecting that the switch has been turned.
2 is closed when the console 54 is at the jumping position (D), and is kept open at other positions.

Reference numeral 63 denotes a relay which is switched by a limit switch 62. The relay 63 includes an exciting coil 63A connected to the limit switch 62 provided on the battery 61 side and a limit switch 5 provided on the handle device 51 side.
And a normally closed contact 63B which is provided between the electromagnetic coil 7A and the electromagnetic pilot portion 64B of the direction control valve 64 and is opened by energizing the exciting coil 63A.

The relay 63 always connects the limit switch 62 and the electromagnetic pilot section 64B, and the console 54 is moved up by the hydraulic cylinder 58 to the jumping position (D).
When the limit switch 62 is closed, the contact 63B is opened to shut off the connection between the limit switch 57 and the electromagnetic pilot portion 64B, and the hydraulic cylinder 58 is stopped in the extended state. Has become.

Reference numeral 64 denotes an electromagnetic pilot type directional switching valve as actuator driving means provided between the hydraulic pump 65, the tank 66 and the hydraulic cylinder 58.
The directional control valve 64 includes electromagnetic pilot portions 64A and 64B.
Is provided. Then, the direction switching valve 64 is turned to the neutral position (A) by energizing the electromagnetic pilot portion 64A.
To the switching position (b), and the electromagnetic pilot unit 6
By switching on the switch 4B, the switch position is switched to the switching position (C).

When the handle device 51 is turned from the upward position (B) to the inclined position (A) by the operator, the interlocking device 55 detects this turning operation by the limit switch 56, By supplying electricity to the electromagnetic pilot portion 64A of the directional control valve 64 from the limit switch 56 and the contact 60B of the relay 60, the console 54 using the hydraulic cylinder 58 is used.
From the jumping position (D) to the operating position (C). When the console 54 reaches the operating position (C), the contact 60B of the relay 60 is opened by closing the limit switch 59, and the hydraulic cylinder 58 stops.

On the other hand, when the handle device 51 is in the inclined position (A)
From the battery 61 to the upward position (B), the turning operation is detected by the limit switch 57, and at this time, the electromagnetic pilot portion of the direction switching valve 64 is transmitted from the battery 61 via the limit switch 57 and the contact 63B of the relay 63. By energizing 64B, the console 54 is rotated from the operation position (C) to the jumping position (D) using the hydraulic cylinder 58. When the console 54 reaches the jumping position (D), the contact 63B of the relay 63 is opened by closing the limit switch 62, and the hydraulic cylinder 58 stops.

Thus, in the present embodiment configured as described above, substantially the same operation and effect as those of the first embodiment can be obtained. And especially in this embodiment,
By simply operating the handle device 51 when the operator gets in and out of the driver's seat 8, the handle-console interlocking device 55 can be used to rotate the handle device 51 and the console 54 together with one touch. Performance can be reliably improved, and the driver can get on and off the driver's seat 8 efficiently.

In this case, the steering wheel-console interlocking device 55 is controlled by the limit switches 56, 57 for detecting that the steering wheel device 51 has reached the inclined position (A) or the upward position (B), and the limit switches 56, 57. Using the detection result, it is detected that the hydraulic cylinder 58 that rotates the console 54 to the operation position (C) or the jumping position (D) and that the console 54 has reached the operating position (C) or the jumping position (D). Limit switches 59, 62
The directional control valve 64 for driving the hydraulic cylinder 58 using the detection results of these limit switches 56, 57, 59, 62, etc.
1 is turned from the inclined position (A) to the upward position (B), this turning operation can be detected by the limit switch 57, and the hydraulic cylinder 58
Thereby, the console 54 can be smoothly rotated from the operation position (C) to the jumping position (D).

Further, the fact that the console 54 has reached the jumping position (D) can be detected by the limit switch 62, and using the detection result, the hydraulic cylinder 58 can be reliably moved to the jumping position (D) by the direction switching valve 64. And the console 54, the hydraulic cylinder 58 and the like can be protected.

In the first embodiment, the console 18 is moved by the gas spring 21 to the operating position (C).
Is biased toward the jumping position (D) from
The present invention is not limited to this. For example, a configuration in which a coil spring or the like is used instead of the gas spring 21 may be used.

In each of the above embodiments, the hydraulic cylinder 35 (58) having the hydraulic pump 41 (65) as a drive source is used as an actuator. However, the present invention is not limited to this. May be used, or a reciprocating actuator such as a pneumatic cylinder may be used. Further, as the interlocking device, a connecting device such as a push-pull cable or a link mechanism is used to connect the handle device 14 (51) to the console 18.
(54) may be linked.

Further, in each of the above embodiments, a wheel type hydraulic excavator has been described as an example of a construction machine.
The present invention is not limited to this, and may be applied to various construction machines including, for example, a wheel type hydraulic crane, a wheel loader, and the like.

[0088]

As described in detail above, according to the first aspect of the present invention, a handle-console interlocking device for interlocking the handle device when the console device is turned is provided between the handle device and the console device. For example, when the operator is seated in the driver's seat, the operator simply rotates the console device from the jumping position to the operating position, and in conjunction with this, the handle device is operated by the handle-console interlocking device. It can be easily rotated from the upward position to the inclined position. Also, when the operator gets off the driver's seat, the handle device can be automatically turned from the inclined position to the upward position only by turning the console device from the operation position to the jumping position. Therefore, the operator can perform the turning operation of the console device and the steering wheel device together with one touch by operating only the console device at the time of getting on and off the driver's seat. It is possible to get on and off the driver's seat efficiently.

According to the second aspect of the present invention, the steering wheel-console interlocking device is operated by the console position detecting means for detecting the position of the console device, and the steering device is rotated by using the detection result of the console position detecting means. Actuator, a handle position detecting means for detecting the position of the handle device, and an actuator drive means for driving the actuator using the detection results of the console position detecting means and the handle position detecting means. When the console device is turned from the position to the jumping position, the turning operation can be detected by the console position detecting means, and the steering device is smoothly turned from the inclined position to the upward position by the actuator using the detection result. Can be. Further, the reaching of the handle device to the upward position can be detected by the handle position detecting means, and the detection result can be used to reliably stop the actuator at the upward position by the actuator driving means. Can be protected.

According to the third aspect of the present invention, a handle-console interlocking device for interlocking the console device when the handle device is turned is provided between the console device and the handle device. , The operator only needs to operate the steering wheel device when getting on and off the driver's seat,
Using the handle-console interlocking device, the turning operation of the handle device and the console device can be performed together with one touch, and these operability can be reliably improved,
It is possible to get on and off the driver's seat efficiently.

According to the fourth aspect of the present invention, the steering wheel-console interlocking device is turned by the steering wheel position detecting means for detecting the position of the steering wheel device, and the console device is rotated by using the detection result of the steering wheel position detecting means. The actuator device, the console position detecting means for detecting the position of the console device, and the actuator driving means for driving the actuator using the detection results of the handle position detecting device and the console position detecting device. When the console device is turned from the position to the upward position, this turning operation can be detected by the handle position detecting means, and the console device is smoothly turned from the operation position to the jumping position by the actuator using the detection result. Can be. Further, it is possible to detect that the console device has reached the jumping position by the console position detecting means, and to use the detection result to reliably stop the actuator at the jumping position by the actuator driving means. Etc. can be protected.

[Brief description of the drawings]

FIG. 1 is a front view showing a hydraulic excavator applied to a first embodiment of the present invention.

FIG. 2 is an enlarged front view showing a cab of the hydraulic excavator in a cutaway manner.

FIG. 3 is an enlarged front view showing the console device in FIG. 2;

FIG. 4 is a plan view showing the console device with a part cut away.

FIG. 5 is a front view showing a state in which the console device is rotated from an operation position to a jumping position by an getting on / off lever.

FIG. 6 is an enlarged front view of the cab showing a state in which the handle device is turned to the upward position in conjunction with the turning of the console device to the jumping position.

FIG. 7 is an overall configuration diagram showing a handle-console interlocking device.

FIG. 8 is an overall configuration diagram showing a handle-console interlocking device of a hydraulic shovel applied to a second embodiment of the present invention.

[Explanation of symbols]

3 Upper revolving superstructure (body) 8 Driver's seat 9 Getting on and off 14, 51 Handle device 14C, 51C Handle 15, 53 Console device 18, 54 Console 20 Operating lever 31, 55 Handle-console interlock device 32, 34, 59, 62 Limit Switch (console position detecting means) 35,58 Hydraulic cylinder (actuator) 36,38,56,57 Limit switch (handle position detecting means) 40,64 Direction switching valve (actuator driving means)

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2D003 AA01 AA06 AB07 AC01 BA01 CA03 DA03 DA04 DB05 EA04 EA05 2D015 EB00

Claims (4)

[Claims] 1. A vehicle body having a driver's seat on which an operator sits and provided with a doorway for getting on and off the driver's seat, and provided on the vehicle body in front of the driver's seat for steering the vehicle, A handle device which is turned forward and backward between an inclined position inclined toward the driver's seat side and an upward position arranged upward from the inclined position when steering a steering wheel; A console, which is provided on the vehicle body and located laterally, has an operating lever between an operating position operated by an operator seated in the driver's seat and a jumping position which is jumped upward from the operating position. In a construction machine comprising a console device which is turned up and down, between the handle device and the console device, the handle device is tilted when the console device is in an operation position. Construction machine characterized in that a console interlock - rotated, the console device of the handle device handle which rotates upward position when a drive-up located. 2. The steering wheel-console interlocking device,
Console position detecting means for detecting that the console device has reached an operation position or a jump position, an actuator for rotating the handle device to an inclined position or an upward position, and the handle device rotated by the actuator. A handle position detecting means for detecting that the console device has become an inclined position or an upward position, and the handle device in association with the movement of the console device using detection signals output from the console position detection means and the handle position detection means. The construction machine according to claim 1, further comprising: an actuator driving unit that drives the actuator so that the actuator rotates. 3. A vehicle body having a driver's seat on which an operator sits and provided with a doorway for getting on and off the driver's seat, and provided on the vehicle body in front of the driver's seat for steering the vehicle body; A handle device which is turned forward and backward between an inclined position inclined toward the driver's seat side and an upward position arranged upward from the inclined position when steering a steering wheel; A console, which is provided on the vehicle body and located laterally, has an operating lever between an operating position operated by an operator seated in the driver's seat and a jumping position which is jumped upward from the operating position. In a construction machine comprising a console device that is pivoted upward and downward, between the console device and the handle device, the console device is operated when the handle device is in an inclined position. Pivots, rotates the console device to drive-up position when the handle device is turned upward position the handle - a construction machine, characterized in that a console linkage. 4. The steering wheel-console interlocking device,
A handle position detecting means for detecting that the handle device is at the operating position or the jumping position, an actuator for rotating the console device to the operating position or the jumping position, and the console device rotated by the actuator A console position detecting means for detecting that the operating position or the jumping position has been reached, and interlocking with the movement of the handle device using detection signals output from the handle position detecting means and the console position detecting means. The construction machine according to claim 3, further comprising: an actuator driving unit that drives the actuator to rotate the console device.