JP3532790B2 - Construction machine and console device used therefor - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction machine suitable for use as, for example, a hydraulic excavator having an operating lever provided near a driver's seat or the like, and a console device used therefor.

[0002]

2. Description of the Related Art Generally, in construction machines such as hydraulic excavators, console devices are arranged on both left and right sides of a driver's seat.
These console devices are provided with operation levers for operating the hydraulic excavator.

A hydraulic excavator of this type according to the prior art is
The vehicle includes a driver's seat on which an operator is seated, a vehicle body provided with an entrance / exit for getting on and off the driver's seat, and a console device operated by an operator seated in a driver's cab, the console device being a side of the driver's seat. A console having an operation lever which is located on the vehicle body and is rotatable upward and downward in the vehicle body and which is operated by an operator; and a position at a side of the console for blocking the entrance / exit and a position for opening. And a gas spring for biasing the console from the operating position toward the jumping position, and the like (for example,
JP-A-9-13425).

Here, for example, the rear side of the console turns upward and downward between the operating position and the jumping position with the rear side serving as a pivot. When the console is in the operating position, the operating lever is located on the side of the driver's seat, near the front side, and the operator of the hydraulic excavator sits in the driver's seat to operate the front and operates in a natural posture. The lever can be operated.

Also, for example, when the operator stands out from the driver's seat to the outside, the operator operates the boarding / leaving lever to rotate the console upward from the operating position to the jumping position.
As a result, the console is in a state of being slanted backward together with the operation lever, so that the operator can stand out from the driver's seat outside by utilizing the space formed in front of the console.

Further, the boarding / alighting lever is interlocked with a switching valve which opens and closes between the hydraulic pump and the hydraulic circuit,
When the boarding / alighting lever is in the shut-off position, this switching valve shuts off the supply of pressure oil to the traveling motor, swing motor, front hydraulic actuator, etc. provided on the hydraulic excavator, so that the It is configured to prevent malfunction of the actuator and the like (for example, Japanese Patent Laid-Open No. 4-30032).

Here, the prior art getting on / off lever described in Japanese Patent Laid-Open No. 9-13425 is formed in a substantially L shape, and the base end side is rotatably attached to the console and the tip end side is rotatably mounted. It protrudes forward from the console.
Further, a guide rail having a substantially arc shape is provided on the base end side of the boarding / alighting lever corresponding to the pivotal movement of the console, and the guide rail extends rearward so as to be branched from the boarding / alighting lever. Further, the guide rail is provided with a substantially arc-shaped long groove, and an engagement pin provided on the vehicle body side is slidably engaged with the long groove. In addition, two guide portions are provided at both ends of the long groove in a bent manner to lock the console at the operating position and the jumping position, respectively, via the engaging pins.

Then, for example, when the console is rotated from the operating position to the jumping position, the operator pulls the boarding / unloading lever together with the console upward while rotating the lever backward. At this time, the engagement pin on the vehicle body side relatively slides in the long groove of the guide rail, and when the console reaches the jumping position, the engagement pin fits into the guide portion on one end side of the long groove. As a result, the console is locked in the jumping position via the guide rail. Further, the console is configured to be locked in the operating position by fitting the engaging pin to the guide portion on the other end side of the long groove.

[0009]

By the way, in the above-described prior art, the boarding / alighting lever is attached to the console, and the console is pivoted between the operating position and the jumping position using the boarding / alighting lever. . Then, at this time, by engaging the guide portion of the long groove provided on the guide rail with the engagement pin on the vehicle body side, the console is locked at the operation position or the jumping position.

For this reason, it is necessary to provide a guide rail extending in an arc shape corresponding to the turning operation of the console or the like on the boarding lever so as to branch from the boarding lever, which complicates the shape and structure. It takes time to process. In addition, the guide rail has to be formed with arcuate long grooves formed by bending the guide portions on both end sides, and there is a problem that it takes time to process the long grooves.

Further, when the console is rotated to the jumping position, the guide rail extending from the boarding / leaving lever, which is jumped up together with the console, toward the engagement pin on the vehicle body side is exposed to the lower side of the console. . As a result, when the console is jumped up, not only is its aesthetic appearance impaired, but the operator may also hook clothes or the like on the guide rails when getting on or off, which reduces the commercialability of the console device. .

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 simplify the shape and structure of a boarding / alighting lever and the like. It is an object of the present invention to provide a construction machine and a console device used for the construction machine, which can be smoothly rotated to and from a jumping-up position and can be improved in commercial characteristics.

[0013]

In order to solve the above problems, the invention of claim 1 has a driver's seat on which an operator is seated, and a vehicle body provided with an entrance / exit for getting on and off the driver's seat,
And a console device operated by an operator seated in the driver 's seat , the console device being located laterally of the driver's seat and rotatably provided in an upward and downward direction on the vehicle body and operated by the operator. A console having an operation lever, and a boarding / alighting lever provided on the side of the console so as to be pivotable upward and downward between a position where the boarding port is blocked and a position where the boarding port is opened. In the construction machine, the console device has a long groove provided along the length direction of the boarding / alighting lever, and the console is provided in a state of being engaged with the long groove, and the boarding / alighting lever is provided at an open position. An engagement protrusion is provided between the vehicle body and the console, and an engagement protrusion that guides the console to rotate between the operation position and the jumping position when the console is rotated between the vehicle body and the console. Said ingress-egress lever and a spring member for urging the either side of the operating position or drive-up position the console to be rotated by the engaging projection as the boundary when a rotational direction intermediate portion, And the conso
Is attached to the vehicle body with the rear side as a fulcrum of rotation,
The boarding lever is located in front of the pivot of the console.
Mounted with the lower position as the fulcrum, the spring member is
Rotation of the boarding / alighting lever on the front side of the rotation fulcrum of the sole
The position above the fulcrum is the spring mounting part on the vehicle body side
Set the midway position in the length direction of the boarding / alighting lever to the console side.
It adopts the configuration you bullet set as the spring mounting portion.

With this structure, when the boarding / alighting lever is rotated, the engagement projection can be guided by the long groove, and the boarding / alighting lever moves the console between the operating position and the jumping position. It can be rotated between. In addition, the biasing spring can bias the console toward either the operating position or the jumping position when the boarding / alighting lever reaches the intermediate portion in the turning direction, and the console moves to the operating position or the jumping position. When you reach the position,
The spring force of the biasing spring can hold the console in these positions. In this case, for example, the lever for getting on and off
Upward with the lower position in front of the console as the fulcrum
To rotate the console upward to the jump position.
Can be made. And, for example, one spring mounting portion
Is placed on the front side of the rotation fulcrum of the console.
When the boarding / leaving lever reaches the middle part in the turning direction,
The knee member can be bent most, and with this position as a boundary
Set the biasing direction of the spring member to the console to the operating position side.
Or, it can be switched to the jumping position side.

Further, according to the invention of claim 2, the long groove of the boarding / alighting lever is provided with a guide portion formed substantially linearly along the boarding / alighting lever, and the engagement is provided at one end side of the guide portion. By one lock part that locks the console at the operating position via the protrusion and the other lock part that is provided on the other end side of the guide part and locks the console at the jumping position via the engaging protrusion. Is forming.

Thus, when the console is rotated toward the operating position, the engaging projection can be guided by the guide portion of the long groove. Then, by using the spring force of the biasing spring, the engagement protrusion on the console side can be abutted against the lock portion on the one end side of the long groove, and the console can be locked at the operation position. Further, when the console is rotated toward the jumping position, the engaging protrusion can be abutted against the lock portion on the other end side of the long groove by using the spring force of the biasing spring to lock the console in the jumping position. be able to.

[0017]

[0018]

According to the third aspect of the invention, a cab having the entrance / exit is provided in the vehicle body, and the driver's seat, the console, and the lever for getting on / off are arranged in the cab.

With this, the entry / exit opening can be blocked by rotating the loading / unloading lever to the blocking position in the cab. Further, by rotating the boarding / alighting lever from the blocking position to the open position, the console can be rotated to the jumping position and the boarding / alighting opening can be opened.

On the other hand, according to the invention of claim 4 , a console is provided which is located on the side of a driver's seat on which an operator is seated so as to be rotatable upward and downward, and has a control lever which is operated by the operator. In a console device used for a construction machine, which is provided with a boarding / alighting lever provided on the side of the console so as to be rotatable upward and downward between a position where an entrance / exit of the construction machine is blocked and a position where it is opened, A long groove formed along the length direction of the boarding / alighting lever, and provided in the console in a state of being engaged with the groove, when the boarding / alighting lever is rotated between an open position and a blocking position. An engaging projection that guides the console to rotate between an operating position and a jumping position, and a vehicle provided on the construction machine and the console, and the boarding / leaving lever includes an intermediate portion in a turning direction. Tona And a spring member for urging the either side of the operating position or drive-up position the console to be rotated by the engaging projection as a boundary when the, or
The console is attached to the vehicle body with the rear side as a pivot.
Mounted, the boarding / alighting lever is a pivot of the console
Installed using the lower position in front of
The material is for boarding / alighting in front of the pivot of the console.
The spring mounting part on the vehicle body side is located above the pivot of the lever.
And the midway position in the length direction of the boarding / alighting lever.
It adopts a structure in which it is installed elastically as a spring attachment part on the console side .

Thus, when the boarding / alighting lever is rotated, the engaging projection can be guided by the long groove, and the console is rotated by the boarding / alighting lever via the engaging projection between the operating position and the jumping position. be able to. Also, when the console reaches the operating position or the jumping position,
The spring force of the biasing spring can hold the console in these positions.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a construction machine according to an embodiment of the present invention and a console device used for the construction machine will be described in detail with reference to FIGS.

Reference numeral 1 is a lower traveling body of the hydraulic excavator, 2 is an upper revolving body mounted on the lower traveling body 1 so as to be revolvable, and a revolving frame 3 of the upper revolving body 2 has an operator cab formed therein. Cab 4 and a building cover 5 in which a machine room (not shown) for housing a prime mover, a hydraulic pump, etc. is formed.
And a counterweight 6 and the like.

Here, a driver's seat 7 is provided in the center of the cab 4 as shown in FIG. 2, and is located on the left side of the driver's seat 7 between an entrance 8 (see FIG. 1) and which will be described later. A console device 21 is provided. Further, inside the cab 4, a boarding / alighting passage 9 for an operator is provided between the front surface of the cab and the console device 21.

A front 10 is provided on the front side of the upper revolving structure 2 so as to be able to move up and down. As shown in FIG. 1, the front end 10 is attached to the revolving frame 3 at the base end side and is lowered by the boom cylinder 11A. The boom 11 to be moved and the arm cylinder 12 attached to the tip end side of the boom 11.
It is composed of an arm 12 rotated by A, a bucket 13 attached to the tip end side of the arm 12, and rotated by a bucket cylinder 13A.

In the hydraulic excavator, pressure oil discharged from the hydraulic pump is supplied to a hydraulic circuit (not shown) with respect to a hydraulic actuator including cylinders 11A, 12A, 13A of the front 10, a traveling motor, a swing motor and the like. )
Boom 1 is supplied and discharged via the
The excavation work of earth and sand etc. is performed using 1, the arm 12, the bucket 13, etc., and the upper-part turning body 2 is turned and a vehicle is run.

Reference numeral 21 denotes a console device provided on the left side of the driver's seat 7 in the cab 4 via a pedestal portion 22. The console device 21 has a console mounting portion 23, which will be described later, as shown in FIGS. The console 24 and the boarding / alighting lever 28 are included.

Reference numeral 23 is a console mounting portion fixed to the left side of the driver's seat 7 on the vehicle body side.
3 is formed by integrally fixing a plurality of metal plates or the like, as shown in FIGS. Further, the console mounting portion 23 is integrally provided with a mounting bracket 23A for a console 24 and a biasing spring 32, which will be described later, and a mounting bracket 23B for a boarding / alighting lever 28.

A console 24 is provided on the console mounting portion 23 so as to be rotatable upward and downward.
As shown in FIGS. 3 to 5, reference numeral 4 denotes a frame body 25 whose main body portion is formed in a substantially box shape using, for example, a metal plate, a resin plate or the like, and the metal plate is provided on the outer surface side of the frame body 25. ,
Top panel 24A and front panel 24 made of resin plate or the like
B, rear panel 24C, left and right side panels 24D, 2
By attaching 4E or the like, it is formed into a substantially box shape having an opening on the lower side.

Here, the left and right side plates 25A of the frame 25,
25A is provided with a pair of mounting brackets 25B, 25B (only one is shown) located on the rear side.
Further, as shown in FIG. 4, a substantially U-shaped mounting metal fitting 25D located on the front side thereof and extending in the left and right directions is fixed to the bottom plate 25C of the frame body 25, and the mounting metal fitting 25D is A mounting plate 25E for the engagement pin 31 which is located on the left end side and which will be described later,
The mounting metal fitting 25F for the biasing spring 32 is integrally provided at the rear end side.

In the console 24, each mounting bracket 25B of the frame 25 is rotatably connected to the mounting bracket 23A of the console mounting portion 23 by using the connecting pin 26,
As will be described later, it is rotated upward and downward between the operating position shown in FIG. 3 and the jumping position shown in FIG.

Reference numeral 27 denotes a left operation lever provided on the upper front side of the console 24 for tilting operation. As shown in FIG. 3, the operation lever 27 is, for example, pressure oil for a hydraulic actuator other than a traveling motor. It is connected to a pilot operated valve (not shown) for controlling the supply amount. This allows
The operation lever 27 is used to raise and lower the front 10 and to swing the upper swing body 2.

Reference numeral 28 denotes a boarding / alighting lever whose base end side is rotatably mounted on the mounting bracket 23B of the console mounting portion 23 so as to be able to pivot upward and downward.
As shown in FIGS. 3 to 6, reference numeral 8 denotes a long plate-shaped mounting plate portion 28A, a substantially "dogleg" -shaped shaft portion 28B provided on the tip side of the mounting plate portion 28A, and the shaft. It is formed by a grip portion 28C provided on the tip side of the portion 28B.

Further, the boarding / alighting lever 28 has its mounting plate portion 28A connected to the console 24 via a long groove 30 and an engagement pin 31 which will be described later, and is pushed to, for example, a switching valve provided in a hydraulic circuit. -Connected via a pull cable or signal line (neither is shown). Further, a connecting pin 29 that serves as a rotation fulcrum of the boarding / alighting lever 28 is attached to the base end side of the mounting plate portion 28A, and the connecting pin 29 is located in front of the connecting pin 26 that serves as a rotation fulcrum of the console 24. , And is located on the lower side.

The boarding / alighting lever 28 is rotated between a shutoff position (A) shown in FIG. 3 and an open position (B) shown in FIG. In this case, when the boarding / alighting lever 28 is in the shut-off position (A), the console 24 is rotated to the operating position, and the pressure oil from the hydraulic pump is supplied to and discharged from the hydraulic actuator through the switching valve of the hydraulic circuit. It is possible.

On the other hand, when the boarding / alighting lever 28 is rotated to the open position (B), the console 24 is rotated by the boarding / alighting lever 28 via the long groove 30 and the engaging pin 31 to the jumping position. To be done. In this case, the boarding lever 28
Is rotated to a hydraulic lock position (C) located between the shut-off position (A) and the open position (B), the hydraulic circuit is shut off by a switch valve or the like by the boarding / alighting lever 28, and the hydraulic pressure is The pressure oil supply to the actuator is stopped.

Further, as shown in FIG. 2, the boarding / alighting lever 28 projects into the boarding / alighting passage 9 to block it when it is in the cutoff position (A), and the boarding / alighting lever 28 is opened to the open position (B) or hydraulically locked. When in the position (C), the boarding / alighting passage 9 is opened.

Reference numeral 30 denotes a mounting plate portion 28A of the lever 28 for getting on and off.
Is a long groove located on the tip side of the mounting plate 2 along the length direction.
8A is formed in a substantially linear shape along the lengthwise direction, and an engagement pin 31 on the console attachment portion 23 side is slidably engaged therein.

Here, the long groove 30 operates the console 24 via a guide portion 30A formed in a substantially straight line along the mounting plate portion 28A and an engaging pin 31 provided at one end of the guide portion 30A. It is composed of one lock portion 30B that locks in the position and the other lock portion 30C that is provided on the other end side of the guide portion 30A and locks the console 24 in the jumping position via the engagement pin 31.

When the boarding / alighting lever 28 rotates, the engaging pin 31 is relatively slidably displaced while being guided in the guide portion 30A of the long groove 30, and at this time, the console 2
4 is rotated by the boarding / alighting lever 28 via the long groove 30 and the engaging pin 31. In this case, when the boarding / alighting lever 28 is rotated to the blocking position (A) as shown in FIG. 4, the console 24 is rotated downward. Then, the console 24 reaches the operation position when the engagement pin 31 hits the lock portion 30B of the long groove 30, and the biasing spring 32 is reached.
It is locked in the operating position by the spring force of.

On the other hand, the boarding / alighting lever 28 is in the open position (B).
When it is rotated to the console 2, as shown in FIG.
4 is rotated upward. And the console 24
When the engaging pin 31 hits the lock portion 30C of the long groove 30, it reaches the jumping position and is locked in the jumping position by the spring force of the biasing spring 32.

Reference numeral 31 is an engaging pin as an engaging projection provided on the console 24, and the engaging pin 31 is shown in FIGS.
As shown in FIG. 2, from the mounting plate 25E of the frame 25 to the console 2
4 through the side panel 24D on the left side,
It projects to the left toward. Then, the engagement pin 31
Guides the console 24 to rotate between an operating position and a jumping position when the boarding / alighting lever 28 is rotated between a shutoff position (A) and an open position (B). Is.

Reference numeral 32 denotes an urging spring as a spring member elastically provided in a compressed state between the console mounting portion 23 and the console 24. The urging spring 32 has a pair of spring mounting portions 32A, 32A as shown in FIG. The spring mounting portions 32A and 32B are mounted between 32B and are connected to each other via a rod 32C so as to be able to approach and separate from each other.

In this case, one of the spring mounting portions 32A located on the vehicle body side is located on the front side of the connecting pin 26 serving as the pivot fulcrum of the console 24 and above the connecting pin 29 serving as the pivot fulcrum of the boarding / alighting lever 28. And is rotatably attached to the attachment fitting 23A of the console attachment portion 23 using the connecting pin 33. The other spring attachment portion 32B located on the console side is rotatably attached to the attachment fitting 25F of the console 24 (frame 25) using the connecting pin 34. The biasing spring 32 is connected to the connecting pin 3
3, 34 and the engagement pin 31 are arranged so as to be substantially linear.

Here, as shown in FIG. 7, the console 2
When 4 rotates about the connecting pin 26, the center of the connecting pin 34 rotates along an imaginary circle C1 having a radius R1 and the biasing spring 32 rotates about the connecting pin 33. In this case, for example, as clearly shown by drawing an imaginary circle C2 centered on the connecting pin 33, passing through the intermediate position M on the imaginary circle C1, the imaginary circle C1 from the center of the connecting pin 33.
The distance to is the shortest radius R2 at the intermediate position M.

That is, since the urging spring 32 is in the most contracted state at the intermediate position M in the rotating direction, when the urging spring 32 is rotated below the intermediate position M, the spring in the extending direction thereof. The force urges the console 24 toward the operating position in the direction of arrow a. Further, when the biasing spring 32 is rotated above the intermediate position M, the spring force is exerted on the console 2.
4 is urged in the direction of arrow b toward the jumping position.

Reference numeral 35 denotes a console arranged on the right side of the driver's seat 7. The console 35 is provided with a right operation lever 36 which can be tilted as shown in FIG.

The hydraulic excavator according to the present embodiment has the above-mentioned structure, and its operation will be described below.

Before the operator gets on the cab 4, the boarding / alighting lever 28 is turned to the open position (B) at the end of the previous operation, and the console 24, the operating lever 27, etc. are also set to the jumping position. Is held.

When the operation of the hydraulic excavator is started in this state, the operator gets into the cab 4 from the entrance / exit 8 and sits on the driver's seat 7 through the entrance / exit passage 9.

Then, when the operator turns the boarding / alighting lever 28 from the open position (B) to the blocking position (A), the console 24 is turned downward by the engaging pin 31 and the like to reach the operating position. As a result, the operation lever 27 is disposed on the front left side of the driver's seat 7 at a position with good operability.
Further, when the boarding / alighting lever 28 is at the cut-off position (A), the switching valve of the hydraulic circuit is operated via the push-pull cable, the signal line, etc., and the hydraulic actuator becomes drivable.

In this state, the boarding / alighting lever 28 blocks the boarding / alighting passage 9 so as to prevent the operator's boarding / alighting operation at the blocking position (A). As a result, when the hydraulic actuator is in a drivable state, it is possible to restrict the operator from getting out of the cab 4 from the driver's seat 7 through the getting on / off passage 9 by the getting on / off lever 28.

On the other hand, for example, the operation of the hydraulic excavator is interrupted,
When the operator stops, when the operator turns the boarding / unloading lever 28 to the opening position (B), the console 24 is turned upward by the engagement pin 31 and the like to reach the jumping position, and the console 24 is sufficiently forward. Wide passage 9
Is secured.

Further, the boarding / alighting lever 28 is switched to the hydraulic lock position (C) while being turned from the cut-off position (A) toward the open position (B), so that the pressure oil supply to the hydraulic actuator is cut off. However, the hydraulic excavator is prevented from operating accidentally while the operator is away from the driver's seat 7. Further, since the boarding / alighting lever 28 is in a state where the boarding / alighting passage 9 is opened at the opening position (B), the operator can easily get out of the cab 4 from the driver's seat 7.

Thus, in the present embodiment, the long groove 30 is extended in the boarding / alighting lever 28 attached to the console attaching portion 23, and the console 24 is provided with the engaging pin 31 that engages in the long groove 30. Since the urging spring 32 is provided between the console mounting portion 23 and the console 24, when the boarding / alighting lever 28 is rotated from the shut-off position (A) to the open position (B), it is within the long groove 30 thereof. While slidingly displacing the engagement pin 31 from the lock portion 30B toward the lock portion 30C, the console 24 is rotated upward from the operation position to the jumping position by the boarding / alighting lever 28 via the engagement pin 31 and the like. be able to.

The boarding / alighting lever 28 is opened to the open position (B).
When rotating from the cut-off position (A) to the long groove 30
Inside the engaging pin 31 from the lock portion 30C to the lock portion 3
It is possible to rotate the console 24 downward from the jumping position to the operating position via the engagement pin 31 by the boarding / alighting lever 28 while slidingly displacing it toward 0B.

In this case, the lock portion 30B of the long groove 30 is set as the lock portion corresponding to the operation position, and the lock portion 30C is formed.
Is set as the lock portion corresponding to the jumping position, and the biasing spring 32 is reduced most at the intermediate position M between the operating position and the jumping position. It can be urged from M in either one of the operating position and the jumping position.

When the console 24 reaches the operating position, the engaging pin 31 can be abutted against the lock portion 30B of the long groove 30 by the spring force of the biasing spring 32,
This allows the console 24 to be locked in the operating position. Further, when the console 24 reaches the jumping position, the engagement pin 31 can abut against the lock portion 30C of the long groove 30 by the spring force of the biasing spring 32,
The console 24 can be locked in the flipped position.

In this case, the boarding / alighting lever 28 is rotatably provided with a lower position in front of the turning fulcrum of the console 24 as a fulcrum, and the urging spring 32 is used for getting on and off in front of the turning fulcrum of the console 24. Since the position above the pivot of the lever 28 is one spring mounting portion 32A and the middle position in the longitudinal direction of the boarding / alighting lever 28 is elastically installed as the other spring mounting portion 32B, the boarding / alighting lever is provided. 28 can be rotated upward and downward with the lower position in front of the console 24 as a fulcrum, and the console 24 can be smoothly rotated between the operating position and the jumping position.

Then, for example, by arranging the one spring mounting portion 32A on the front side of the pivot fulcrum of the console 24, the biasing spring 32 is activated when the boarding / alighting lever 28 reaches the intermediate position M in the pivoting direction. It can be most reduced, and the biasing direction of the biasing spring 32 to the console 24 can be stably switched to the operation position side or the jumping position side with the intermediate position M as a boundary.

Therefore, according to the present embodiment, by simply providing the straight long groove 30 for slidably engaging the engaging pin 31 with the boarding lever 28, the boarding lever 28 and the biasing spring 32 are provided. It is possible to smoothly rotate the console 24 between the operating position and the jumping position by using, for example, an arc guide rail or guide portions on both end sides are formed on the boarding / leaving lever as in the prior art. It is not necessary to provide an arc-shaped long groove or the like, and the structure of the console 24, the boarding / alighting lever 28, etc. can be simplified.

Further, the boarding / alighting lever 28 blocks the boarding / alighting passage 9 when it is in the blocking position (A), and is pivoted upward from this state to the opening position (B) or the hydraulic lock position (C). At this time, since the boarding / alighting passage 9 is opened, it is possible to prevent the operator from inadvertently getting out of the cab 4 from the boarding / alighting passage 9 by the boarding / alighting lever 28, even though the hydraulic actuator can be driven. The safety can be improved, and the operator can smoothly get out of the cab 4 only when the operation of the hydraulic actuator is locked.

In the above-described embodiment, the hydraulic excavator having the cab 4 in which the driver's seat 7 is provided is described as an example, but the present invention is not limited to this, and for example, the cab 4 is used.
Alternatively, the present invention may be applied to a small hydraulic excavator or the like having a canopy or the like above the driver's seat.

Further, in the above-mentioned embodiment, the long groove is formed as a through hole penetrating the mounting plate portion 28A of the boarding / alighting lever 28 in the left and right directions, but the present invention is not limited to this, and the long groove is formed in the console. The hole may be formed as a bottomed hole that faces the opening 24, and the engaging protrusion may be engaged in the hole.

Furthermore, in the above-mentioned embodiment, the hydraulic excavator was described as an example of the construction machine, but the present invention is not limited to this, and may be applied to various construction machines such as a hydraulic crane and a wheel loader. Good.

[0067]

As described in detail above, according to the invention of claim 1, the console device has a long groove provided along the length direction of the boarding / alighting lever and a console in a state of being engaged with the long groove. Since the engaging protrusion that rotates between the operating position and the jumping position and the spring member that biases the console to either one of the operating position and the jumping position are provided,
By rotating the boarding / alighting lever, it is possible to smoothly rotate the console between the operating position and the jumping position by the boarding / alighting lever via the engaging projection while guiding the engaging projection by the long groove. it can. In addition, the console can be urged toward either the operating position or the jumping position by the spring member, and the console can be locked at these positions, so that the structure of the console, the boarding / alighting lever, etc. can be simplified. it can. Moreover, the lever for getting on and off is
Pivoting around a lower position in front of the pivot pivot
Provided so that the spring member is located in front of the pivotal fulcrum of the console.
On one side, move the position above the pivot of the boarding lever
Since it is configured as a mounting part, the boarding lever is
Up and down with the lower position in front of the console as the fulcrum
The console between the operating position and the jumping position.
It can be smoothly rotated. And, for example, one side
The spring mounting part of is arranged in front of the pivot of the console.
The lever to reach the middle part in the turning direction.
The spring member can be bent most when
Direction of biasing the console by the spring member with the inter-part as the boundary
Switch to the operating position side or the jumping position side stably.
You can

Further, according to the invention of claim 2, the long groove of the boarding / alighting lever is constituted by a substantially linear guide portion for guiding the engaging projection and lock portions provided on both end sides of the guide portion. Therefore, by using the spring force of the spring member to abut the engaging protrusion with the lock portion of the long groove, the console can be reliably locked at the operating position or the jumping position, and the locking structure and the like can be made better than in the prior art. It can be simplified.

[0069]

According to the third aspect of the invention, since the driver's seat, the console and the boarding / alighting lever are provided in the cab provided in the vehicle body, the boarding / alighting lever is rotated to the shut-off position in the cab. As a result, the entrance / exit can be blocked, and the operator can be prevented from getting off the vehicle in a state in which the construction machine can be operated.

On the other hand, according to the invention of claim 4, in the console device used for the construction machine, the long groove provided along the length direction of the boarding / alighting lever, and the console in the operating position in the state of being engaged with the long groove. Since it is composed of an engagement protrusion that rotates between the operating position and the jumping position, and a spring member that biases the console to either the operating position or the jumping position, the boarding / leaving lever allows the engagement protrusion to intervene. The console can be smoothly rotated between the operating position and the jumping position. Further, the console can be locked at either the operating position or the jumping position by the spring member, and the structure of the console, the boarding / alighting lever, etc. can be simplified.

[Brief description of drawings]

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

FIG. 2 is an enlarged perspective 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.

FIG. 4 is an enlarged front view showing a main part of FIG. 3 in a broken state.

FIG. 5 is a left side view showing the console device.

FIG. 6 is a front view showing a state in which the console is turned from the operating position to the jumping position by the boarding / alighting lever.

7 is an enlarged front view showing an enlarged main part in FIG.

[Explanation of symbols]

2 Upper revolving structure (car body) 4 cabs 7 driver's seat 8 entrance / exit 21 console device 23 Console mounting part (car body) 24 consoles 25 frame (console) 28 Boarding lever 30 long groove 30A guide part 30B, 30C Lock part 31 Engagement pin (engagement protrusion) 32 Biasing spring (spring member) 32A, 32B Spring mounting part

Claims (4)

(57) [Claims] 1. A vehicle body having a driver's seat on which an operator is seated and having an entrance / exit for getting on and off the driver's seat, and a console device operated by an operator seated on the driver 's seat . The console device is located on a side of the driver's seat and is rotatably provided on the vehicle body in an upward and downward direction. The console has an operation lever operated by an operator, and the boarding / alighting device is provided on a side of the console. A construction machine comprising a boarding / alighting lever rotatably provided in an upward and downward direction between a position where the mouth is blocked and a position where the door is opened. A long groove provided along the depth direction, and provided in the console in a state of being engaged with the long groove, the console is operated when the boarding / alighting lever is rotated between an opening position and a blocking position. An engaging projection that guides to rotate between a stationary position and a jumping position, and is provided between the vehicle body and the console,
A spring member for urging the console rotated by the engaging projection toward either one of the operation position or the jumping position when the boarding / alighting lever becomes a middle portion in the rotating direction . Also, the console has the rear side as a fulcrum of rotation for the vehicle body.
Attached to the console, the lever for getting on and off is a pivotal support for the console.
Installed using the lower position in front of the point as the fulcrum
The member is said to get on and off at the front side of the pivot of the console.
A spring is attached to the vehicle body at a position above the pivot of the lever
And the middle position in the length direction of the boarding / alighting lever
A construction machine characterized in that the spring is attached to the console as a spring attachment part . 2. The long groove of the boarding / alighting lever guides the console through a guide portion formed in a substantially straight line along the boarding / alighting lever, and the engaging protrusion provided on one end side of the guide portion. The lock member is formed by one lock portion that locks in the operation position and the other lock portion that is provided on the other end side of the guide portion and locks the console in the jumping position through the engagement protrusion. Construction machine described in. The method according to claim 3, wherein the vehicle body provided with a cab having the entrance, construction machine is within the cab according to claim 1 or 2 formed by disposing the driver's seat, the console and passenger lever. 4. A console, which is located on the side of a driver's seat on which an operator is seated, is rotatably provided in an upward and downward direction, and has an operation lever operated by the operator, and a construction machine on the side of the console. In a console device for a construction machine, comprising a boarding / leaving lever rotatably provided in an upward and downward direction between a position at which an entrance / exit opening of the vehicle is blocked and a position at which the boarding / unloading opening is opened. A long groove provided along the direction, and provided in the console in a state of being engaged with the long groove, and when the console is rotated between the open position and the closed position, the console jumps to the operating position. An engaging protrusion that guides to rotate between a raised position and a vehicle body of the construction machine and the console are provided, and when the boarding / alighting lever becomes an intermediate portion in a turning direction, a boundary is provided. The above And a spring member for urging the either side of the operating position or drive-up position the console to be pivoted by the engagement projections, and the console the vehicle body rear side as a rotation fulcrum
Attached to the console, the lever for getting on and off is a pivotal support for the console.
Installed using the lower position in front of the point as the fulcrum
The member is said to get on and off at the front side of the pivot of the console.
A spring is attached to the vehicle body at a position above the pivot of the lever
And the middle position in the length direction of the boarding / alighting lever
A console device used in a construction machine, which is configured to be installed elastically as a spring attachment portion on the console side .