JP2012036672A - Construction machinery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To be able to place a console device at a position where the console device does not block an operator from getting in or out when a gate lock lever is lifted up and placed at a opening position.SOLUTION: In a left console device 15, a console frame 17 is rotatably mounted to a mount 16. Between the console frame 17 and a gate lock lever 20, a swing change mechanism 21 is provided which rotates the console frame 17 in the opposite direction to the operational direction of the gate lock lever 20. Therefore, the swing change mechanism 21 rotates downward the left console device 15 and place it at a retracted position when rotates upward the gate lock lever 20 and place it at an opening position. In the retracted position of the left console device 15, because an operational lever 19 can be retracted in a lever retraction part 10C of a driver's seat base 10, the operator can easily pass through between an entrance 13 and a driver's seat 14.

Description

  The present invention relates to a construction machine such as a hydraulic excavator, and more particularly to a construction machine provided with a console device having work levers on both the left and right sides of a driver's seat.

  Generally, a hydraulic excavator as a construction machine includes a self-propelled lower traveling body, an upper revolving body that is turnably mounted on the lower traveling body, and a work device that is provided on the upper revolving body so as to be able to move up and down. And is composed of.

  In addition, the upper swing body is located in the cab, a swing frame that forms a support structure, a cab that is provided on the left front side of the swing frame and that has a boarding entrance for an operator to get on and off the left side surface. A driver's seat provided on the turning frame and seated by an operator who has entered through the entrance / exit and a console device provided on both the left and right sides of the driver's seat and having a work lever for operating the work device and the like. It is configured.

  Here, a gate lock lever is provided between the entrance / exit of the cab and the driver's seat to prevent the operation device from erroneously contacting the operation lever and various switches when the operator gets on and off. ing. The gate lock lever is provided, for example, so as to extend forward from a front portion of the console device, and is configured to be able to rotate forward, backward, upward, and downward together with the console device. The gate lock lever is tilted to the front side and prohibits the passage between the entrance and exit and the driver's seat at the blocking position where the operation lever is placed at the operator's hand. The passage between the entrance / exit and the driver's seat is permitted at the opened opening position (see, for example, Patent Document 1 and Patent Document 2).

JP 2004-124387 A JP 2009-24395 A

  By the way, in each of the above-mentioned patent documents, a passage through which an operator passes is secured by starting up the console device together with the gate lock lever when getting on and off through the entrance. However, when the console device is up and running, the work lever etc. is in a state of closing the side of the driver's seat, so this console device becomes an obstacle when going back and forth between the entrance and the driver's seat. End up.

  The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to allow the console device to be disposed at a position that does not interfere with the getting on / off operation when the gate lock lever is disposed at the opening position. To provide construction machinery.

  A construction machine according to the present invention includes a self-propelled lower traveling body, an upper revolving body that is turnably mounted on the lower traveling body and has a doorway on one side in the left and right directions, and the upper revolving body. The upper revolving structure includes a revolving frame that forms a support structure, a driver seat on which an operator who has entered through the entrance and exit sits, a left side of the driver seat, A console device provided on the right side and having a working lever for operating the working device, and between the boarding gate and the driver's seat at a shut-off position provided between the boarding gate and the driver's seat and tilted forward. A gate lock lever that prohibits passage and permits passage between the entrance and exit and the driver's seat at an open position that is turned upward from the blocking position.

  In order to solve the above-described problem, the feature of the configuration adopted by the invention of claim 1 is that among the left and right console devices, the console device located on the entrance side is on the driver's seat side. Mounting base having a support shaft extending in the left and right directions, a console frame rotatably supported on the support shaft of the mounting base, and the working lever provided on the console frame and operated by an operator A rotation conversion mechanism for rotating the console frame in a direction opposite to the operation direction of the gate lock lever is provided between the gate lock lever and the console frame, and the rotation conversion mechanism When the gate lock lever is disposed at the shut-off position, the console device is moved to the operation position where the work lever is located at the operator's hand. And when the gate lock lever is pivoted upward and disposed at the open position, the console device is pivoted downward to dispose the working lever in a retracted position. .

  According to a second aspect of the present invention, the rotation conversion mechanism is provided by connecting a lever side arm connected to the gate lock lever, a frame side arm connected to the console frame, and the arms. The link mechanism is composed of an operation direction switching section that switches the direction in which the lever side arm operates and the direction in which the frame side arm operates in the opposite direction.

  According to a third aspect of the present invention, the gate lock lever and the console frame of the console device are configured to be rotatably attached to the support shaft of the mounting base.

  According to the first aspect of the present invention, the console frame is rotated between the console frame of the console device located on the entrance / exit side and the gate lock lever in a direction opposite to the operation direction of the gate lock lever. A dynamic conversion mechanism is provided.

  Therefore, the rotation conversion mechanism can arrange | position a console apparatus in the operation position in which an operation lever is located in the operator's hand, when a gate lock lever is arrange | positioned in the interruption | blocking position. On the other hand, when the gate lock lever is rotated upward and disposed at the open position, the rotation conversion mechanism can be disposed at the retracted position where the console device is rotated downward and the work lever is stored.

  As a result, when the gate lock lever is disposed at the open position, the work lever can be stored downward at the storage position by rotating the console device downward by the rotation conversion mechanism. Thereby, since the operation lever can be excluded from the passage space between the entrance and exit and the driver's seat, the operator can get on and off smoothly.

  According to the invention of claim 2, when the gate lock lever is turned upward from the blocking position toward the opening position, the lever side arm of the turning conversion mechanism connected to the gate lock lever is operated, and this operation is performed. Tell the operation direction switching unit. At this time, the operation direction switching unit switches the operation direction of the lever side arm to the opposite direction and transmits it to the frame side arm, thereby rotating the console device downward by the frame side arm. Thereby, the rotation conversion mechanism can store the work lever of the console device on the lower side by the link mechanism including the lever side arm, the frame side arm, and the operation direction switching unit.

  According to the invention of claim 3, since the gate lock lever and the console frame of the console device are configured to be pivotably attached to the support shaft of the mounting base, the structure can be simplified and the number of parts can be reduced. Can be reduced.

It is a front view which shows the hydraulic excavator applied to embodiment of this invention. It is a top view which expands and shows a hydraulic shovel. It is an external appearance perspective view which expands and shows a floor member, a cab, a driver's seat, a console device, a gate lock lever, and the like. It is a front view of the principal part expansion which shows the state which has arrange | positioned the gate lock lever in the interruption | blocking position, and has arrange | positioned the console apparatus in the operation position with a floor member, a driver's seat, a rotation conversion mechanism, etc. FIG. 5 is a front view showing a state in which the gate lock lever is arranged at the open position and the left console device is arranged at the retracted position together with the floor member, the driver's seat, the rotation conversion mechanism and the like from the same position as in FIG. It is the left view which looked at the state which has arrange | positioned the gate lock lever in the open position, and has arrange | positioned the left console apparatus in the retracted position from the arrow VI-VI direction in FIG. It is the perspective view seen from the left front side in the state which assembled the mounting stand of the left console apparatus, the console frame, the gate lock lever, and the rotation conversion mechanism. It is the perspective view seen from the left rear side in the state which assembled the mounting stand of the left console apparatus, a part of console frame, the gate lock lever, and the rotation conversion mechanism. It is operation | movement explanatory drawing which shows operation | movement of a left console apparatus and a rotation conversion mechanism when a gate lock lever is operated from the interruption | blocking position to an open position. It is operation | movement explanatory drawing which shows operation | movement of the rotation conversion mechanism when a gate lock lever is operated from the interruption | blocking position to an open position.

  Hereinafter, as a construction machine applied to an embodiment of the present invention, a cab specification hydraulic excavator will be described as an example and described in detail with reference to FIGS.

  In FIG. 1, reference numeral 1 denotes a cab specification hydraulic excavator as a construction machine applied to the present embodiment. The hydraulic excavator 1 includes a self-propelled crawler type lower traveling body 2 and a lower traveling body 2. The upper revolving unit 3 is mounted so as to be capable of swiveling. In addition, a swing type work device 4 for performing excavation work of earth and sand is provided on the front side of the upper swing body 3 so as to be able to swing and lift.

  Here, as shown in FIG. 2, the upper turning body 3 has a left and right width dimension substantially equal to the vehicle width of the lower traveling body 2 and has a virtual turning radius R around the turning center O. It is formed in a substantially circular shape as seen from above so as to fit within the circle C. As a result, the excavator 1 is rearward so that the rear surface of the counterweight 8 described later is substantially within the vehicle width of the lower traveling body 2 when the upper revolving body 3 turns on the lower traveling body 2 about the turning center O. It is configured as a small swivel excavator. The turning radius R is defined by the distance from the turning center O to the rear surface of the counterweight 8, and the virtual circle C is a locus of the rear surface of the counterweight 8 when the upper swing body 3 is turned. Yes.

  The upper swing body 3 includes a swing frame 5, an engine 6, a counterweight 8, a floor member 9, a cab 12, an entrance 13, a driver's seat 14, left and right console devices 15 and 25, and a gate lock lever 20. The rotation conversion mechanism 21 and the like are included.

  Reference numeral 5 denotes a swing frame of the upper swing body 3. The revolving frame 5 is formed as a support structure attached on the lower traveling body 2. In addition, the working device 4 is attached to the front side of the revolving frame 5 so as to be swingable and capable of moving up and down.

  Reference numeral 6 denotes an engine (illustrated by a dotted line in FIG. 1) mounted on the rear side of the turning frame 5, and the engine 6 is disposed in a horizontally placed state extending in the left and right directions, for example. Further, a radiator, an oil cooler (not shown) and the like are arranged on the right side of the engine 6, and a hydraulic pump 7 is arranged on the left side.

  Reference numeral 8 is a counterweight provided at the rear of the revolving frame 5, and the counterweight 8 balances the weight with the work device 4. Further, the counterweight 8 is formed in an arc shape so as to cover the engine 6 from the rear side.

  A floor member 9 is provided on the revolving frame 5 and is located on the front side of the engine 6. As shown in FIG. 3, the floor member 9 has a driver seat base 10 on the rear side and a substantially flat footrest plate 11 on the front side of the driver seat base 10 on which an operator can put his / her foot. Here, the driver's seat base 10 is formed in a step shape by the front plate 10A and the upper plate 10B, and a driver's seat 14 to be described later is attached to the left and right center positions of the upper plate 10B. Console devices 15 and 25 are attached. Further, on the left side of the driver's seat base 10 (on the entrance 13 side), a lever storage portion 10C is formed by recessing from the front plate 10A to the rear side, and the lever storage portion 10C is shown in FIGS. As shown, when the upper and lower positions of the left console device 15 are reversed and arranged at the storage position, the work lever 19 is stored.

  A cab 12 is provided on the floor member 9 and is located on the left front side of the revolving frame 5. The cab 12 is formed as a box-shaped body by a front surface portion 12A, a rear surface portion 12B, a left surface portion 12C, a right surface portion 12D, and a top surface portion 12E. Moreover, the entrance / exit 13 is formed in the left surface part 12C at a position closer to the front side. Furthermore, a door 12F (shown in FIG. 1) for opening and closing the entrance 13 is attached to the left surface portion 12C so as to be rotatable in the horizontal direction. Thus, the operator can sit on the driver's seat 14 through the entrance 13 by opening the door 12F of the cab 12.

  Reference numeral 14 denotes a driver seat provided in the upper swing body 3, and the driver seat 14 is mounted on the driver seat base 10 of the floor member 9. The driver seat 14 is seated by an operator who operates the excavator 1. Console devices 15 and 25 each having a work lever 19 for operating the work device 4 and the like are disposed on both the left and right sides of the driver's seat 14.

  Reference numeral 15 denotes a left console device which is located on the left side of the driver seat 14 and provided on the driver seat base 10. The left console device 15 is rotated by a gate lock lever 20 via a rotation conversion mechanism 21 described later. Further, the left console device 15 is roughly constituted by a mounting base 16, a console frame 17, a console cover 18, a work lever 19, a hydraulic pilot valve (not shown) and the like which will be described later.

  Reference numeral 16 denotes a mounting base that is located on the left side of the driver seat 14 and is provided on the driver seat base 10 of the floor member 9. The mount 16 supports the left console device 15 and is disposed between the driver's seat 14 and the lever storage portion 10C. As shown in FIGS. 7 and 8, the mount 16 is formed by bending a strong metal plate into an L-shape, and horizontally extending toward the left side at the upper part of the vertical plate extending upward and downward. A support shaft 16A extending in the direction is attached in a cantilever state. A gate lock lever 20 and a console frame 17 are rotatably attached to the support shaft 16A.

  Reference numeral 17 denotes a console frame attached to the left side of the mounting base 16, and the console frame 17 is rotatably supported by the mounting base 16. The console frame 17 has a left end plate 17A and a right end plate 17B extending substantially in parallel in the front and rear directions at intervals in the left and right directions, and a hydraulic pilot valve (not shown) extending from the end plates 17A and 17B to the front side. In order to integrally connect the left end plate 17A and the right end plate 17B, the left and right end portions are fixed to the left end plate 17A and the right end plate 17B. The cylindrical connecting cylinder 17D is generally configured. Further, the right end plate 17B located on the mounting base 16 side has a front lower portion extending forward, and a tip portion thereof serves as a link mounting portion 17E for mounting a frame side arm 23 of the rotation conversion mechanism 21 described later. ing.

  The console frame 17 is inserted into the connecting cylinder 17D through the support shaft 16A of the mounting base 16 so that the right end plate 17B faces the mounting base 16, thereby extending the left and right axes (supporting shaft 16A). ) As a center line. The console frame 17 is covered with a box-shaped console cover 18.

  Reference numeral 19 denotes a work lever (see FIG. 4) provided at the front side position of the console frame 17, and the work lever 19 is tilted when operating the work device 4 and the like. The work lever 19 extends upward from a hydraulic pilot valve attached to the valve attachment portion 17C of the console frame 17, and can be tilted forward, backward, left, and right.

  As described above, the left console device 15 can be rotated forward, backward, upward, and downward about the support shaft 16A of the mounting base 16, and the work lever 19 is positioned forward and obliquely upward. By passing the extended operation position (the state shown in FIG. 4 or the state (a) in FIG. 9) and the operation position downward (b) and (c) in FIG. Then, the work lever 19 is placed in the storage position (the state shown in FIGS. 5 and 6 or the state (d) in FIG. 9) in which the work lever 19 is stored in the lever storage part 10C of the driver seat base 10 by turning up and down. can do. In this case, when the left console device 15 is disposed at the retracted position, the left console device 15 is excluded from the left side of the driver's seat 14 including the work lever 19. The passage can be widened.

  Reference numeral 20 denotes a gate lock lever disposed on the left side of the left console device 15. The gate lock lever 20 includes a mounting cylinder portion 20A that is rotatably fitted on the distal end side of the support shaft 16A of the mounting base 16, and the mounting cylinder portion 20A. The lever portion 20B extends in the radial direction from the cylindrical portion 20A, and the arm portion 20C is disposed on the substantially opposite side of the mounting cylinder portion 20A and extends in the radial direction. Here, the gate lock lever 20 is attached to the support shaft 16A of the mounting base 16 to which the console frame 17 of the left console device 15 is attached so as to be separately rotated. Thereby, since the gate lock lever 20 is also used as the support shaft 16A as a support structure, the structure can be simplified, the number of parts can be reduced, and the like.

  As shown in FIG. 4, the gate lock lever 20 can be pushed down from the front side to the lower side and arranged almost horizontally, thereby blocking the entrance 13 and restricting the entry / exit of the operator. On the other hand, as shown in FIGS. 5 and 6, the gate lock lever 20 opens up the entrance 13 by being raised upward or rearward, and invalidates the operation of various levers and switches including the left console device 15. I have to. Thus, even when the operator gets in and out of contact with various levers and switches, the working device 4 and the like are prevented from malfunctioning.

  Reference numeral 21 denotes a rotation conversion mechanism provided by operatively connecting the left console device 15 and the gate lock lever 20. The rotation conversion mechanism 21 performs a downward rotation (operation in the direction of arrow C) of the console device 15 by performing a lifting operation (operation in the direction of arrow A) and a push-down operation (operation in the direction of arrow B) of the gate lock lever 20. (Rotation) and upward rotation (rotation in the direction indicated by arrow D).

  That is, the rotation conversion mechanism 21 includes a lever-side arm 22 whose front end extending in the front and rear directions is connected to the tip of the arm portion 20C of the gate lock lever 20, and a front end extending in the front and rear directions. The frame side arm 23 is connected to the link mounting portion 17E, and the operation direction switching portion 24 is provided on the upper surface plate 10B of the driver seat base 10 and is located on the rear side of the arms 22 and 23. .

  Further, the operation direction switching unit 24 is located at the center of the left and right directions between the arms 22 and 23, and is provided with a rotation shaft 24A provided on the upper surface plate 10B so as to be horizontally rotatable. Two swing plates 24B and 24C extending radially opposite from the shaft 24A, and a rear end of the lever side arm 22 are connected to the tip of one swing plate 24B so as to be rotatable. A connecting member 24D and a connecting member 24E rotatably attached to the tip of the other swing plate 24C and connected to the rear end of the frame side arm 23 at the upper part extending upward.

  Here, the operation of the rotation conversion mechanism 21 will be described. In the rotation conversion mechanism 21, the direction in which the lever side arm 22 operates and the direction in which the frame side arm 23 operates are reversed by the operation direction switching unit 24. To switch. In this case, as shown in FIG. 8, when the gate lock lever 20 is lifted in the arrow A direction, the lever side arm 22 is pulled in the arrow E direction, and the operation direction switching unit 24 rotates in the arrow J direction. As a result, the frame side arm 23 is pulled in the direction indicated by the arrow G, which is opposite to the lever side arm 22, by the operation direction switching unit 24. As a result, the console frame 17 rotates in the direction indicated by the arrow C about the support shaft 16A of the mounting base 16, so that the left console device 15 reverses up and down as shown in FIGS. Thus, the work lever 19 can be disposed at the storage position stored in the lever storage portion 10 </ b> C of the driver seat base 10. This series of operations is as shown in FIGS. 9 and 10 (a) to (d).

  On the other hand, when the gate lock lever 20 is pushed down in the direction indicated by the arrow B, the lever side arm 22 is pushed in the direction indicated by the arrow F, and the operation direction switching unit 24 rotates in the direction indicated by the arrow K. As a result, the frame side arm 23 is pushed in the direction indicated by the arrow H, which is the direction opposite to the lever side arm 22, by the operation direction switching unit 24. As a result, the console frame 17 rotates in the direction indicated by the arrow D about the support shaft 16A of the mounting base 16, so that the left console device 15 has the work lever 19 positioned on the front side as shown in FIG. And can be disposed at an operation position extending obliquely upward. This series of operations can be shown by operations in the reverse directions of FIGS. 9 and 10 (a) to (d).

  In FIG. 3, reference numeral 25 denotes a right console device that is located on the right side of the driver seat 14 and provided on the driver seat base 10. Reference numeral 26 denotes left and right traveling levers (pedals) provided on the front side of the footrest plate 11 on the front side of the driver's seat 14, and each traveling lever 26 travels in the lower part by operating in the front and rear directions. The body 2 is made to travel.

  The hydraulic excavator 1 according to the present embodiment has the above-described configuration, and the operation thereof will be described next.

  First, when the operator sits on the driver's seat 14 and steers the excavator 1, the left console device 15 has the gate lock lever 20 positioned on the front side where the operation lever 19 is at the operator's hand and extends obliquely upward. It is arranged at the operation position (position (a) in FIGS. 4 and 9).

  Then, the operator seated on the driver's seat 14 operates the traveling lever 26 to cause the lower traveling body 2 to travel. Further, by tilting the work levers 19 of the left and right console devices 15 and 25, the work device 4 and the like can be operated to perform excavation work of earth and sand.

  Next, when getting off the driver's seat 14, it is necessary to move the gate lock lever 20 and the left console device 15 that extend forward and block the passage. Therefore, the operator turns up the gate lock lever 20 in the direction indicated by the arrow A in FIG. The operation of the gate lock lever 20 is reversed in the operation direction by the rotation conversion mechanism 21, and the left console device 15 is rotated in the direction indicated by the arrow C in the opposite direction. , And placed in the storage position shown in FIG. In the storage position of the left console device 15, the upper and lower positions of the left console device 15 are reversed, and the operation lever 19 is stored in the lever storage portion 10 </ b> C of the driver seat base 10.

  Thus, by storing the work lever 19 in the lower position that does not get in the way, the passage between the entrance 13 and the driver's seat 14 can be widened. Therefore, the operator can easily get off from the entrance 13 through a wide passage. It is also possible to get into the driver's seat 14 easily.

  Thus, according to the present embodiment, the left console device 15 positioned on the entrance 13 side is provided on the side of the driver's seat 14 and has the mounting base 16 having the support shaft 16A extending in the left and right directions, and the mounting. The console frame 17 is rotatably supported on the support shaft 16A of the base 16 and a work lever 19 provided on the front side of the console frame 17 and operated by an operator. A rotation conversion mechanism 21 that rotates the console frame 17 in a direction opposite to the operation direction of the gate lock lever 20 is provided between the lever 20 and the lever 20.

  Therefore, as shown in FIG. 4, the rotation conversion mechanism 21 places the left console device 15 in the operation position where the work lever 19 is located at the operator's hand when the gate lock lever 20 is pushed down and placed in the blocking position. be able to. On the other hand, as shown in FIG. 5, the rotation conversion mechanism 21 rotates the left console device 15 downward and places it in the retracted position when the gate lock lever 20 is rotated upward and placed in the open position. can do.

  As a result, when the gate lock lever 20 is disposed at the opening position, the left console device 15 can be rotated downward by the conversion structure of the rotation conversion mechanism 21, and the work lever 19 is moved to the driver seat base 10 at the retracted position. Can be stored in the lever storage portion 10C. Thereby, since the operation lever 19 can be excluded from the traffic space where the operator passes between the entrance 13 and the driver's seat 14, the operator can get on and off the driver's seat 14 smoothly.

  The rotation converting mechanism 21 is provided by connecting the lever side arm 22 connected to the gate lock lever 20, the frame side arm 23 connected to the console frame 17, and the arms 22 and 23. It is configured as a link mechanism including an operation direction switching unit 24 that switches the direction in which the lever side arm 22 operates and the direction in which the frame side arm 23 operates to the opposite direction. Therefore, the rotation conversion mechanism 21 can be configured with a simple link structure including the lever side arm 22, the frame side arm 23, and the operation direction switching unit 24.

  Furthermore, since the gate lock lever 20 is configured to be pivotably attached to the support shaft 16A of the mounting base 16 together with the console frame 17 of the left console device 15, it can also be used as a part, simplifying the structure, It is possible to reduce the number of parts.

  In the embodiment, the rotation conversion mechanism 21 is connected between the lever side arm 22 connected to the gate lock lever 20, the frame side arm 23 connected to the console frame 17, and the arms 22 and 23. As an example, a case is described in which a link mechanism is provided that includes an operating direction switching unit 24 that switches the direction in which the lever side arm 22 operates and the direction in which the frame side arm 23 operates to the opposite direction. . However, the present invention is not limited to this, and the rotation conversion mechanism may be formed with a mechanism other than the link mechanism. Specifically, the operation direction may be switched to the opposite side by using a gear or the like as the operation direction switching unit.

  Further, in the embodiment, the cab specification hydraulic excavator 1 is exemplified, and the cab 12 is provided with the entrance 13 on the left side in the left and right directions, and the left console device 15 is rotated in accordance with the entrance 13. The case where the gate lock lever 20 is provided only on the left side is described as an example. However, the present invention is not limited to this. For example, in the case of a hydraulic excavator equipped with a canopy, when it is possible to get on and off from both sides in the left and right directions, that is, when entrances are provided on both the left and right sides. The left and right console devices may be rotatable, and each may be provided with a gate lock lever and a rotation conversion mechanism.

  Further, in the embodiment, the hydraulic excavator 1 including the crawler type lower traveling body 2 is described as an example of the construction machine. However, the present invention is not limited to this, and may be applied to, for example, a hydraulic excavator provided with a wheel-type lower traveling body. It can also be applied to other construction machines equipped with console devices on the left and right sides of the driver's seat.

1 Excavator (construction machine)
DESCRIPTION OF SYMBOLS 2 Lower traveling body 3 Upper revolving body 4 Working device 5 Turning frame 9 Floor member 12 Cab 13 Entrance / exit 14 Driver's seat 15 Left console device 16 Mounting base 16A Support shaft 17 Console frame 18 Console cover 19 Working lever 20 Gate lock lever 21 times Dynamic conversion mechanism 22 Lever side arm 23 Frame side arm 24 Operation direction switching unit 25 Right console device

Claims (3)

A self-propelled lower traveling body, an upper revolving body that is mounted on the lower traveling body so as to be turnable, and has a doorway on one side in the left and right directions, and the upper revolving body is provided so as to be able to move up and down. Consisting of working equipment,
The upper swing body includes a swing frame forming a support structure, a driver's seat on which an operator who gets in through the entrance / exit is seated, and a work lever that is provided on both the left and right sides of the driver's seat and operates the work device A console device that is provided between the entrance and exit and the driver's seat, and prohibits passage between the entrance and exit and the driver's seat at a shut-off position that is tilted forward. In a construction machine comprising a gate lock lever that permits passage between the boarding gate and the driver's seat at the opened opening position,
Of the left and right console devices, the console device located on the entrance side has a mounting base that is disposed on the side of the driver's seat and extends in the left and right directions, and a supporting shaft for the mounting base. A console frame rotatably supported on the console frame, and the operation lever provided on the console frame and operated by an operator.
Between the gate lock lever and the console frame, a rotation conversion mechanism for rotating the console frame in a direction opposite to the operation direction of the gate lock lever is provided,
The rotation converting mechanism arranges the console device at an operation position where the work lever is positioned at an operator's hand when the gate lock lever is arranged at the blocking position, and rotates the gate lock lever upward. The construction machine is configured such that when it is arranged at the opening position, the console device is rotated downward to be arranged at the storage position in which the work lever is stored.   The rotation conversion mechanism includes a lever side arm connected to the gate lock lever, a frame side arm connected to the console frame, and a direction in which the lever side arm operates by connecting the arms. The construction machine according to claim 1, wherein the construction machine is configured as a link mechanism including an operation direction switching unit that switches a direction in which the frame side arm operates to an opposite direction.   The construction machine according to claim 1, wherein the gate lock lever and the console frame of the console device are configured to be rotatably attached to a support shaft of the mounting base.

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