JP6826549B2 - Construction machinery - Google Patents

Description

The present invention relates to, for example, a construction machine such as a hydraulic excavator having a console device and a gate lock device in a cab.

In general, a hydraulic excavator as a construction machine has a lower traveling body capable of self-propelling, an upper rotating body mounted on the lower traveling body so as to be swivel via a swivel device, and an upper swivel body. It is composed of a front device provided so as to be capable of.

On the front side of the upper swivel body, a cab on which the operator boarded is provided from the entrance on the left side. A driver's seat device having a seat is provided in the driver's cab in the cab, and a console device having an operation lever for operating the front device is provided at the left and right lateral positions of the driver's seat device. ing. Further, the console device on the left side, which is on the entrance / exit side, is provided with a gate lock device that is operated at an opening position that allows the operator to get on and off and a blocking position that prohibits the operator from getting on and off.

Here, the console device on the entrance / exit side is composed of a console frame attached to the driver's seat device, an operation lever provided at the front portion of the console frame, and a console cover covering the console frame.

Further, the gate lock device is provided at the outer position of the console frame in the left and right directions so as to be rotatable upward and downward, and the opening position extending from the rotary connecting portion to the front side. It is configured to include a gate lock lever that is rotated upward and downward between the and the shutoff position (see Patent Document 1). The rotary connecting portion of the gate lock device is covered with a console cover to prevent foreign matter from being caught in the gate lock device and to protect the gate lock switch that invalidates the operation of the operation lever (pilot pressure).

Japanese Unexamined Patent Publication No. 2009-24395

By the way, in Patent Document 1, the rotary connecting portion of the gate lock device is covered with a console cover. On the other hand, a plurality of types of gate lock devices are prepared, for example, having different shapes (length, shape, rotation angle range, etc.) of the gate lock lever according to the size of the cab and the layout of the driver's seat device. In this case, it is difficult to design a common console cover to accommodate multiple types of gate lock devices. For this reason, it is necessary to prepare and install a dedicated console cover according to the selected gate lock device, it is necessary to prepare many console covers with different shapes, and a large space is required to stock a large console cover. There is a problem that is required.

Further, the console cover is formed so as to cover the entire console frame including the rotary connecting portion of the gate lock device. Therefore, when maintaining the rotary connecting portion, it is necessary to remove and attach the large console cover, which causes a problem that the maintenance workability is poor.

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 share most of the console cover to reduce the space for inventory, and to easily rotate the gate lock device. The purpose is to provide construction machinery that enables maintenance of dynamic connections.

The present invention includes a self-propelled vehicle body, a front device provided on the front side of the vehicle body, a cab provided in the vehicle body and having a driver's cab, and an operation provided in the driver's cab in the cab and having a seat. The seat device, the console device provided at the left and right side positions of the driver's seat device to operate the front device, and the left and right console devices on the entrance / exit side for getting on and off the seat. The console device is provided with a gate lock device that is provided at an opening position that allows an operator to get on and off and a shutoff position that prohibits getting on and off, and the console device on the entrance / exit side is attached to the driver's seat device. In a construction machine composed of a console frame, an operation lever provided at the front portion of the console frame, and a console cover covering the console frame, the gate lock device is used in the left and right directions of the console frame. A rotary connecting portion that is attached to the outer position so as to be rotatable upward and downward, and a rotary connecting portion that extends forward from the rotary connecting portion and is provided in the upward and downward directions between the opening position and the blocking position. The console cover is configured to include a rotating gate bar, and the console cover covers the console frame and exposes the rotating connecting portion of the gate lock device toward the outside in the left and right directions. A cover body having an opening opened at a position facing the portion and a rotating connecting portion of the gate lock device are arranged at positions covering the opening from the outside in the left and right directions and attached to the opening of the cover body. It is composed of a removably attached gate lock cover, and a frame member is provided on the cover body of the console cover so as to face the opening at positions separated from the opening to the left and right. The gate lock cover is arranged in the gap provided between the opening and the frame member .
Further, the present invention provides a self-propelled vehicle body, a front device provided on the front side of the vehicle body, a cab provided on the vehicle body and having a driver's cab, and a seat provided on the driver's cab in the cab. A driver's seat device, a console device provided at the left and right lateral positions of the driver's seat device to operate the front device, and an entrance / exit for getting on and off the seat among the left and right console devices. The console device on the side is provided with a gate lock device that is provided at an opening position that allows the operator to get on and off and a shutoff position that prohibits getting on and off, and the console device on the entrance / exit side is attached to the driver's seat device. In a construction machine composed of a console frame, an operation lever provided at the front portion of the console frame, and a console cover covering the console frame, the gate lock device is left and right of the console frame. A rotary connecting portion that is mounted so as to be rotatable upward and downward at an outer position in the direction, and an upper and lower portion that extends forward from the rotary connecting portion and is provided between the opening position and the blocking position. The console cover is configured to include a gate bar that is rotated in a direction, and the console cover covers the console frame and exposes the rotation connecting portion of the gate lock device toward the outside in the left and right directions. With respect to the cover main body having an opening opened at a position facing the dynamic connecting portion and the opening of the cover main body arranged at a position covering the rotary connecting portion of the gate lock device from the outside in the left and right directions. It is composed of a gate lock cover that can be attached and detached, and the cover body includes a front cover member that covers the front side portion of the console frame, a rear cover member that covers the rear side portion of the console frame, and the front cover member. A state in which the opening located between the cover member and the rear cover member and opening to the outside in the left and right directions of the operating lever and the opening and the outside in the left and right directions are spaced apart from each other. It is composed of a frame member extending from the front portion of the rear cover member to the front side.

According to the present invention, most of the console cover can be shared to reduce the space for inventory, and the rotary connecting portion of the gate lock device can be maintained with a simple operation.

It is a front view which shows the hydraulic excavator applied to embodiment of this invention. It is a perspective view which shows the floor member, the driver's seat device, the left console device, the gate lock device, and the right console device. It is a front view of the left console device, the gate lock device, and the left armrest in FIG. 1 as viewed from the left side. It is a perspective view of the left console device and the gate lock device seen from the diagonally upper left side. It is an exploded perspective view which shows the state which the outer cover main body of the console cover and the gate lock cover are separated from the left console device. It is a front view which shows the left console device with the console cover omitted, and the gate lock device in which the gate bar is arranged at a cutoff position. FIG. 6 is a front view of the left console device as viewed from the same position as in FIG. 6 in a state where the gate bar of the gate lock device is rotated to the opening position. It is a front view which shows the state which the gate lock cover of the console cover was removed from the left console device, and the rotary connection part of a gate lock device was exposed. It is a front view which shows the upper cover main body of a console cover by itself. It is a front view which shows the outer cover main body of a console cover by itself. It is a front view which shows the gate lock cover of a console cover by itself.

Hereinafter, a hydraulic excavator will be taken as an example as a typical example of the construction machine according to the embodiment of the present invention, and will be described in detail with reference to FIGS. 1 to 11.

In FIG. 1, the hydraulic excavator 1 as a construction machine is supported on a self-propelled lower traveling body 2 and a lower traveling body 2 so as to be swiveled via a swivel device 3, and is supported by a vehicle body together with the lower traveling body 2. The upper swivel body 4 is provided on the front side of the upper swivel body 4 so as to be able to move up and down, and is configured to include a front device 5 for excavating earth and sand.

The upper swivel body 4 includes a swivel frame 6 as a base, an exterior cover 7 that covers an engine, a hydraulic pump, a heat exchanger, a control valve, etc. (none of which are shown) mounted on the swivel frame 6, and a swivel frame. It is configured to include a cab 8 arranged at the left front portion of the 6.

The cab 8 is formed in a box shape, for example, by covering the lower side of the cab box 9 with a floor member 10 (see FIG. 2) so that the inside becomes an cab. The floor member 10 of the cab 8 is formed as a rectangular plate body that is long in the front and rear directions. The driver's cab in the cab 8 is provided with a driver's seat device 11, a left console device 12, a gate lock device 18, a right console device 26, and the like, which will be described later.

On the left side surface of the cab box 9, an entrance / exit 9A (see FIG. 1) for getting on / off the seat 11B of the driver's seat device 11 is provided. Further, a door 9B for opening and closing the entrance 9A is attached to the left side surface of the cab box 9.

The driver's seat device 11 is provided in the driver's cab of the cab 8. The driver's seat device 11 includes, for example, a driver's seat pedestal 11A having a position adjusting function in the upward, downward, front, and rear directions, and a seat 11B which is mounted on the driver's seat pedestal 11A so as to be able to adjust the position and in which an operator sits. It has.

The left console device 12 is provided on the side of the entrance 9A through which the operator passes when getting on and off the seat 11B, that is, on the left side of the driver's seat device 11. As shown in FIGS. 3 and 4, the left console device 12 includes a left console frame 13, a left operating lever 16, a left lock mechanism 17, a gate lock device 18, and a left console cover 19.

The left console frame 13 is attached to the left side of the driver's seat device 11. As shown in FIGS. 5 to 7, the left console frame 13 has a fixed frame 14 attached to the driver's seat pedestal 11A of the driver's seat device 11, and a rear portion extending in the front and rear directions above the rear portion of the fixed frame 14. It is composed of a main frame 15 attached so as to be rotatable downward.

The main frame 15 is an armrest mounting portion 15A located at the rear portion in the front and rear directions and mounted on the fixed frame 14 so as to be rotatable upward and downward, and an intermediate frame portion extending forward from the armrest mounting portion 15A. It is composed of 15B and a box-shaped lever mounting portion 15C provided at the front portion of the intermediate frame portion 15B. As shown in FIG. 3, a left armrest 25, which will be described later, is attached to the upper part of the armrest attachment portion 15A.

As shown in FIGS. 6 and 7, the left operating lever 16 is attached to the upper surface portion 15C1 of the box-shaped lever mounting portion 15C. Further, a left lock mechanism 17 for fixing the upward and downward rotation of the main frame 15 at an arbitrary angle position is attached to the front surface portion 15C2 of the lever mounting portion 15C. Further, a gate lock device 18 described later is provided on the left surface portion 15C3 which is outside in the left and right directions of the lever mounting portion 15C.

The left operating lever 16 constitutes an operating lever. The left operating lever 16 is provided on the upper surface portion 15C1 of the lever mounting portion 15C constituting the main frame 15 of the left console frame 13. The left operating lever 16 operates the swivel device 3 and the front device 5 together with the right operating lever 27. The left operating lever 16 includes a pressure reducing valve type pilot valve 16A attached to the upper surface portion 15C1 and a lever portion 16B extending upward from the pilot valve 16A and tilted forward, backward, left, and right by the operator. Is configured to include. The pilot valve 16A is connected to a control valve (not shown) via a pilot hose (not shown) and a gate lock switch 18E of a gate lock device 18 described later.

The left lock mechanism 17 is provided on the front surface portion 15C2 of the lever mounting portion 15C. The left lock mechanism 17 permits or restricts the upward and downward rotation of the main frame 15 with respect to the fixed frame 14. That is, the left lock mechanism 17 can adjust the height position of the left operating lever 16 according to the operator's preference.

The gate lock device 18 is provided on the entrance 9A side of the cab box 9 for getting on and off the seat 11B of the driver's seat device 11, that is, on the left console device 12. The gate lock device 18 is operated at a later-described opening position that allows the operator to get on and off and a later-described shut-off position that prohibits the operator from getting on and off. The gate lock device 18 includes a rotary connecting portion 18A, a gate bar 18B, an operating portion 18C, a spring member 18D, and a gate lock switch 18E, which will be described later.

The rotary connecting portion 18A is mounted on the left and right outside of the main frame 15 of the left console frame 13, that is, on the left surface portion 15C3 of the lever mounting portion 15C of the main frame 15 so as to be rotatable upward and downward. ing. The rotary connecting portion 18A is composed of a plate-like body having a boss portion in the center, and can rotate in the arrow A direction or the arrow B direction around an axis extending in the left and right directions with respect to the left surface portion 15C3. ing.

The gate bar 18B is provided so as to extend forward from the rotary connecting portion 18A. The gate bar 18B is rotated upward and downward between the opening position shown in FIG. 7 and the blocking position shown in FIG. The gate bar 18B is formed at the blocking position shown in FIG. 6 so as to extend diagonally downward from the rotary connecting portion 18A toward the front side, bend at the intermediate portion, and extend to the front side.

The operation unit 18C extends to the side opposite to the gate bar 18B, and is provided on the rotary connecting unit 18A so as to be exposed (protruded) from the gate lock cover 24 constituting the left console cover 19. The operation unit 18C can rotate in the direction of arrow A in FIG. 6 or in the direction B of arrow B in FIG. When the operation unit 18C is grasped from the cutoff position of the gate bar 18B shown in FIG. 6 and rotated in the direction of arrow A, the gate bar 18B can be rotated downward to move to the opening position shown in FIG. Further, when the operation unit 18C is grasped from the opening position of the gate bar 18B shown in FIG. 7 and rotated in the direction of arrow B, the gate bar 18B can be rotated upward to move to the blocking position shown in FIG. ..

The spring member 18D is provided between the lever mounting portion 15C of the main frame 15 and the rotary connecting portion 18A. The spring member 18D is provided so as to generate the largest tensile force when the gate bar 18B is located at an intermediate position between the blocking position and the opening position. As a result, the spring member 18D can arrange the gate bar 18B at either the blocking position or the opening position by the tensile force (spring force).

The gate lock switch 18E switches the pilot pressure for driving the control valve that operates each hydraulic actuator, that is, the operation of the left and right operating levers 16 and 27 to be valid or invalid, and is to the left of the lever mounting portion 15C. It is attached to the surface portion 15C3. The gate lock switch 18E has, for example, a detection unit 18E1 that outputs a detection signal by being pressed by the rotation connection unit 18A when the gate bar 18B is arranged at the open position.

That is, at the cutoff position of the gate bar 18B, the gate lock switch 18E detects the cutoff position by separating the detection unit 18E1 from the rotary connecting part 18A, and outputs this detection signal to the pilot pump (not shown). ) Supply pilot pressure to the operating levers 16, 27, etc. so that the swivel device 3 and the front device 5 can be operated.

On the other hand, at the opening position of the gate bar 18B, the gate lock switch 18E detects the opening position by abutting and pressing the detection unit 18E1 against the rotary connecting portion 18A, and outputs this detection signal to the pilot pump. The operation of the operating levers 16 and 27 is invalidated by shutting off the pilot pressure from the pump.

Next, the configuration of the left console cover 19, which is a characteristic portion of the present embodiment, will be described in detail.

The left console cover 19 constitutes a console cover and covers the left console frame 13. The left console cover 19 is formed by using an elastic resin material. As shown in FIGS. 3 to 5, the left console cover 19 is composed of an upper cover main body 20 as a cover main body, an inner cover main body 21, an outer cover main body 22, and a gate lock cover 24.

The upper cover main body 20 covers the left console frame 13 from above. Specifically, as shown in FIGS. 5, 8 and 9, the upper cover main body 20 is formed from the front cover member 20A covering the upper part of the lever mounting portion 15C of the main frame 15 of the left console frame 13 and the front cover member 20A. It is composed of a rear cover member 20B extending to the rear side. The upper cover main body 20 is attached to the main frame 15 by using, for example, a screw member (not shown).

The front cover member 20A is formed by a rectangular upper surface plate 20A1 that covers the lever mounting portion 15C from above while inserting the lever portion 16B of the left operating lever 16, and a peripheral edge plate 20A2 that extends downward from the peripheral edge of the upper surface plate 20A1. Has been done. Further, notches 20A3 for avoiding the rotation connecting portion 18A of the gate lock device 18 are formed on the outer surfaces of the peripheral plate 20A2 in the left and right directions.

As shown in FIG. 5, the inner cover main body 21 is located below the upper cover main body 20 and covers the left console frame 13 from the inside (seat 11B side) in the left and right directions. Specifically, the inner cover main body 21 has a front cover member 21A that covers the front side portion of the main frame 15, that is, the lever mounting portion 15C. The rear side from the front cover member 21A is a rear cover member (not shown) that covers the intermediate frame portion 15B of the main frame 15. The inner cover main body 21 is attached to the main frame 15 by using, for example, a screw member (not shown) while avoiding the fixed frame 14 of the left console frame 13.

The front cover member 21A covers the outer cover main body 22 with the lever mounting portion 15C of the main frame 15 sandwiched between the front cover member 22A, and is formed symmetrically with the front cover member 22A in the left and right directions. There is. The front cover member 21A includes an inner surface plate 21A1 that covers the lever mounting portion 15C from the inside in the left and right directions, and a front plate 21A2 that extends from the edge of the inner surface plate 21A1 so as to cover the lower side from the front side of the lever mounting portion 15C. It is composed of a bottom plate 21A3. Further, the lower surface plate 21A3 is formed with screw holes 21A4 for attaching the front cover member 22A of the outer cover main body 22.

As shown in FIGS. 4, 5, and 10, the outer cover main body 22 is located below the upper cover main body 20 and has the main frame 15 of the left console frame 13 outside in the left and right directions (opposite to the seat 11B). It covers from the side). Specifically, the outer cover main body 22 includes a front cover member 22A that covers the lever mounting portion 15C that is the front side portion of the main frame 15, and a rear cover member 22B that covers the intermediate frame portion 15B that is the rear side portion of the main frame 15. An opening 22C located between the front cover member 22A and the rear cover member 22B and located on the left and right outside of the left operating lever 16, and an opening 22C and the left and right outside. It is composed of a frame member 22D extending from the front portion 22B1 of the rear cover member 22B to the front side in a state of being spaced apart from each other.

The front cover member 22A covers the inner cover body 21 with the lever mounting portion 15C of the main frame 15 sandwiched between the front cover member 21A, and is formed symmetrically with the front cover member 21A in the left and right directions. There is. The front cover member 22A includes an outer surface plate 22A1 that covers the lever mounting portion 15C from the outside in the left and right directions, and a front plate 22A2 that extends from the edge of the outer surface plate 22A1 so as to cover the lower side from the front side of the lever mounting portion 15C. It is composed of a bottom plate 22A3. Further, the lower surface plate 22A3 is formed with a screw insertion hole 22A4 at a position corresponding to the screw hole 21A4 of the inner cover main body 21.

Here, as shown in FIG. 8, the outer surface plate 22A1 of the front cover member 22A covers, for example, a portion on the front side of the rotary connecting portion 18A of the gate lock device 18 and a portion on the lower side of the gate lock switch 18E. It is formed in an L shape. Further, the front portion 22B1 of the rear cover member 22B is arranged on the rear side of the rotary connecting portion 18A. As a result, the opening 22C is opened at a position facing the rotary connecting portion 18A of the gate lock device 18, and when the gate lock cover 24 described later is removed, the rotary connecting portion 18A is moved in the left and right directions. It can be exposed to the outside.

The opening 22C is surrounded by the outer surface plate 22A1 of the front cover member 22A and the front portion 22B1 of the rear cover member 22B. A gate lock cover 24 is arranged in the opening 22C as a closing member. Further, the opening 22C forms a space for performing maintenance (inspection, repair, etc.) of the rotary connecting portion 18A of the gate lock device 18, the gate lock switch 18E, and the like. Therefore, the opening 22C has a size sufficient for maintaining the rotary connecting portion 18A, the gate lock switch 18E, and the like.

The frame member 22D is provided on the outer cover main body 22 of the left console cover 19. The frame member 22D is arranged so as to face the opening 22C at a position separated from the opening 22C to the outside (left side) in the left and right directions. As a result, a gap 22E in the left and right directions is provided between the opening 22C and the frame member 22D, and the gate lock cover 24 is arranged in the gap 22E.

The frame member 22D includes an upper frame portion 22D1 extending forward from the upper position of the front portion 22B1 of the rear cover member 22B, and a lower frame portion 22D2 extending forward from the lower position of the front portion 22B1 of the rear cover member 22B. It is formed in a C shape by the front frame portion 22D3 provided over the front end of the frame portion 22D1 and the front end of the lower frame portion 22D2. As a result, the inside of the frame member 22D is open, and the gate lock device 18 can be maintained through this opening. The front frame portion 22D3 of the frame member 22D is inclined rearward from the upper side to the lower side so as to be along the front side edge portion of the opening 22C.

Here, since the outer cover main body 22 (left console cover 19) is formed of an elastic resin material, the frame member 22D elastically deforms the tip side (front frame portion 22D3 side) in the left and right directions. be able to.

Thereby, for example, in a state where the frame member 22D is elastically deformed to the outside to widen the gap 22E, the gate lock cover 24 described later can be attached / detached while the outer cover main body 22 is attached to the left console frame 13. Further, the frame member 22D can suppress the gate lock cover 24 by elastically pressing the gate lock cover 24 from the outside. Therefore, when the gate lock cover 24 is attached, it can be temporarily fixed by the frame member 22D, and workability can be improved.

The outer cover main body 22 is attached to the main frame 15 by using a plurality of screw members (not shown), and the screw member 23 (see FIG. 5) inserted into the screw insertion holes 22A4 of the front cover member 22A. By screwing into the screw hole 21A4 of the front cover member 21A of the inner cover main body 21, the inner cover main body 21 is also attached.

The gate lock cover 24 is arranged at a position that covers the rotary connecting portion 18A of the gate lock device 18 from the left side, which is the outside in the left and right directions. On this, the gate lock cover 24 is attached to the opening 22C of the outer cover main body 22 and is detachably attached. Since the gate lock cover 24 is formed to be significantly smaller than the outer cover main body 22, it does not take up space even when a plurality of types are prepared (inventory) so as to correspond to the change of the gate lock device 18. Further, the small gate lock cover 24 can be attached / detached with a simple operation.

As shown in FIGS. 5 and 11, the gate lock cover 24 faces the opening 22C of the outer cover main body 22 and covers the opening 22C, and is formed in a covered cylinder shape with the left side serving as the lid portion 24A. There is. Further, the gate lock cover 24 has a tubular portion 24B extending from the periphery of the lid portion 24A toward the main frame 15, and the gate bar 18B of the gate lock device 18 is located on the front side of the tubular portion 24B. A front notch 24C is formed that allows it to rotate downward. On the other hand, an upper notch 24D is formed on the upper side of the tubular portion 24B to allow the operation portion 18C of the gate lock device 18 to rotate in the forward and backward directions.

A plurality of mounting brackets 24E are provided at the tip of the tubular portion 24B, and each mounting bracket 24E can be attached to and detached from the outer cover main body 22 by using fasteners (not shown) such as clips and screw members. It is installed. A C-shaped groove portion 24F into which the frame member 22D of the outer cover main body 22 can be fitted is provided on the outer surface of the lid portion 24A.

The left armrest 25 is a device on which the operator seated on the seat 11B rests his left elbow, and is arranged on the left side of the driver's seat device 11. The left armrest 25 is mounted on the rear side in a state where the height can be adjusted with respect to the armrest mounting portion 15A of the main frame 15 of the left console frame 13.

The right console device 26 is configured in the same manner as the left console device 12 except that the gate lock device is not provided. That is, the right console device 26 includes a right console frame (not shown), a right operating lever 27, a right lock mechanism 28, and a console cover 29. Since these detailed configurations are the same as those of the left console device 12 except that they have symmetrical shapes in the left and right directions, description thereof will be omitted.

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

The operator who opens the door 9B of the cab box 9 and gets into the cab 8 from the entrance 9A is seated in the seat 11B of the driver's seat device 11. The operator seated on the seat 11B grabs the operation unit 18C of the gate lock device 18 and rotates it in the direction of arrow B in FIG. 7, rotates the gate bar 18B in the direction of arrow B, and turns the gate bar 18B in the direction of arrow B. Place in. At this time, since the gate lock switch 18E detects the cutoff position of the gate bar 18B, the operation by the operating lever pedal (not shown) for traveling is enabled, and the operation by the left and right operating levers 16 and 27 is performed. Can be enabled.

As a result, the operator can travel the lower traveling body 2 by operating the operating lever / pedal for traveling. Further, by tilting the operating levers 16 and 27 provided on the left and right console devices 12 and 26, the swivel device 3 and the front device 5 can be operated to excavate earth and sand.

On the other hand, when the operator gets off the cab 8, the operation unit 18C of the gate lock device 18 is grasped and rotated in the direction of arrow A in FIG. 6, and the gate bar 18B is rotated in the direction of arrow A in FIG. Place it at the opening position shown in. At this time, since the gate lock switch 18E detects the opening position of the gate bar 18B, the operation by the operating lever pedal (not shown) for traveling and the operation by the left and right operating levers 16 and 27 are invalidated. Can be done. As a result, it is possible to prevent erroneous operation due to the operator erroneously touching each of the operation levers 16, 27 and the like.

Next, a case where maintenance (inspection, repair, etc.) of the rotary connecting portion 18A and the gate lock switch 18E of the gate lock device 18 is performed will be described. In this case, the gate lock cover 24 is removed from the outer cover main body 22 of the left console cover 19. As a result, maintenance of the rotary connecting portion 18A, the gate lock switch 18E, and the like can be performed through the opening 22C of the outer cover main body 22.

Thus, according to the present embodiment, the gate lock device 18 is rotatably attached to the outer positions of the main frame 15 constituting the left console frame 13 in the left and right directions so as to be rotatably upward and downward. It includes a connecting portion 18A and a gate bar 18B extending forward from the rotating connecting portion 18A and rotating upward and downward between the opening position and the blocking position. On this, the left console cover 19 covers the main frame 15 of the left console frame 13 and exposes the rotary connecting portion 18A of the gate lock device 18 toward the outside in the left and right directions. The outer cover main body 22 having an opening 22C opened at a position facing the outer cover main body 22 and the rotary connecting portion 18A of the gate lock device 18 are arranged at positions covering the outer cover main body 22 from the outside in the left and right directions. It is composed of a gate lock cover 24 that is detachably attached to the gate lock cover 24.

Here, for example, a plurality of types of gate lock devices 18 having different shapes (length, shape, rotation angle range, etc. of the gate bar 18B) are prepared according to the size of the cab 8 and the layout of the driver's seat device 11. There is. In this case, a dedicated left console cover 19 must be prepared and attached so as to correspond to the selected gate lock device 18.

On the other hand, in the present embodiment, since the left console cover 19 is composed of the outer cover main body 22 and the gate lock cover 24, a plurality of types of gate lock covers 24 covering the rotary connecting portion 18A are prepared. Only by doing so, it is possible to appropriately cope with different gate lock devices 18. As a result, the upper cover main body 20, the inner cover main body 21, and the outer cover main body 22, which are the majority of the left console cover 19, can be shared. On top of this, since a plurality of types of gate lock covers 24, which are significantly smaller than the left console cover 19, may be prepared, the space for inventory can be reduced.

Moreover, maintenance of the rotary connecting portion 18A, the gate lock switch 18E, and the like can be performed through the opening 22C of the outer cover main body 22 simply by removing the small gate lock cover 24. As a result, maintenance can be performed by simply attaching and detaching the small gate lock cover 24.

The outer cover main body 22 of the left console cover 19 is provided with a frame member 22D so as to face the opening 22C at a position separated from the opening 22C to the outside in the left and right directions. On this, the gate lock cover 24 is arranged in the gap 22E formed between the opening 22C and the frame member 22D. As a result, the gate lock cover 24 can be arranged using the gap 22E, and the gap 22E can be used as a maintenance space. Further, by pressing the frame member 22D against the gate lock cover 24 from the outside, the gate lock cover 24 can be suppressed and temporarily fixed, and the workability of the mounting work at this time can be improved.

The outer cover main body 22 includes a front cover member 22A that covers the front side portion of the main frame 15 of the left console frame 13, a rear cover member 22B that covers the rear side portion of the main frame 15, a front cover member 22A, and a rear cover member 22B. In front of the rear cover member 22B with an opening 22C located between the left operating lever 16 and opening to the outside in the left and right directions and a space between the opening 22C and the outside in the left and right directions. It is composed of a frame member 22D extending from the portion 22B1 to the front side.

Therefore, the gate lock cover 24 can be arranged over the opening 22C and the frame member 22D. Further, by pressing the frame member 22D against the gate lock cover 24 from the outside, the gate lock cover 24 can be suppressed and temporarily fixed, and the workability when attaching the gate lock cover 24 can be improved.

Further, since the gate lock device 18 is provided with an operation unit 18C extending to the opposite side of the gate bar 18B and exposed from the gate lock cover 24 constituting the left console cover 19, the gate bar can be operated by operating the operation unit 18C. 18B can be rotated upward and downward.

In the embodiment, a case where the cover main body is composed of three members, the upper cover main body 20, the inner cover main body 21, and the outer cover main body 22, has been described as an example. However, the present invention is not limited to this, and the cover body may be formed of one, two, or four or more members.

In the embodiment, a case where the outer cover main body 22 is provided with a frame member 22D extending forward from the front portion 22B1 of the rear cover member 22B in a state of being spaced from the opening 22C in the left and right directions is illustrated. ing. However, the present invention is not limited to this, and the frame member 22D may be abolished and the gate lock cover 24 may be attached to the opening 22C.

Further, in the embodiment, the hydraulic excavator 1 has been described as an example of the construction machine. However, the present invention is not limited to this, and can be widely applied to other construction machines such as hydraulic cranes and wheel loaders.

1 Hydraulic excavator (construction machinery)
2 Lower running body (body)
4 Upper swivel body (body)
5 Front device 8 Cab 11 Driver's seat device 11B Seat 12 Left console device (console device on the entrance / exit side)
13 Left console frame 16 Left operation lever 18 Gate lock device 18A Rotating connection part 18B Gate bar 18C Operation part 19 Left console cover (console cover)
20 Top cover body (cover body)
21 Inner cover body (cover body)
22 Outer cover body (cover body)
22A Front cover member 22B Rear cover member 22B1 Front 22C Opening 22D Frame member 22E Gap 24 Gate lock cover 26 Right console device

Claims (3)

A self-propelled vehicle body, a front device provided on the front side of the vehicle body, a cab provided in the vehicle body having a driver's cab, and a driver's seat device provided in the driver's cab in the cab and having a seat. Provided on the left and right side positions of the driver's seat device, respectively, on the console device for operating the front device, and on the left and right console devices, the console device on the entrance / exit side for getting on and off the seat. It is equipped with a gate lock device that is operated at an opening position that allows operators to get on and off and a blocking position that prohibits getting on and off.
The console device on the entrance / exit side is a construction machine composed of a console frame attached to the driver's seat device, an operation lever provided at the front portion of the console frame, and a console cover covering the console frame. In
The gate lock device is provided with a rotary connecting portion attached to an outer position in the left and right directions of the console frame so as to be rotatable upward and downward, and a rotary connecting portion extending forward from the rotary connecting portion. It is configured to include a gate bar that is rotated upward and downward between the opening position and the blocking position.
The console cover
A cover body having an opening that covers the console frame and opens at a position facing the rotary connecting portion in order to expose the rotating connecting portion of the gate lock device toward the outside in the left and right directions.
It is composed of a gate lock cover that is arranged at a position that covers the rotary connecting portion of the gate lock device from the outside in the left and right directions, is attached to the opening of the cover body, and is detachably attached .
The cover body of the console cover is provided with a frame member so as to face the opening at positions separated from the opening to the outside in the left and right directions.
A construction machine characterized in that the gate lock cover is arranged in a gap formed between the opening and the frame member . A self-propelled vehicle body, a front device provided on the front side of the vehicle body, a cab provided in the vehicle body having a driver's cab, and a driver's seat device provided in the driver's cab in the cab and having a seat. Provided on the left and right side positions of the driver's seat device, respectively, on the console device for operating the front device, and on the left and right console devices, the console device on the entrance / exit side for getting on and off the seat. It is equipped with a gate lock device that is operated at an opening position that allows operators to get on and off and a blocking position that prohibits getting on and off.
The console device on the entrance / exit side is a construction machine composed of a console frame attached to the driver's seat device, an operation lever provided at the front portion of the console frame, and a console cover covering the console frame. In
The gate lock device is provided with a rotary connecting portion attached to an outer position in the left and right directions of the console frame so as to be rotatable upward and downward, and a rotary connecting portion extending forward from the rotary connecting portion. It is configured to include a gate bar that is rotated upward and downward between the opening position and the blocking position.
The console cover
A cover body having an opening at a position facing the rotary connecting portion for covering the console frame and exposing the rotating connecting portion of the gate lock device toward the outside in the left and right directions.
It is composed of a gate lock cover that is arranged at a position that covers the rotary connecting portion of the gate lock device from the outside in the left and right directions, is attached to the opening of the cover body, and is detachably attached.
The cover body is located between the front cover member that covers the front side portion of the console frame, the rear cover member that covers the rear side portion of the console frame, and the front cover member and the rear cover member. The opening that opens to the outside in the left and right directions of the lever, and the frame member that extends from the front to the front of the rear cover member with a space between the opening and the outside in the left and right directions. construction machinery characterized in that it is composed of. The gate lock device is provided with an operation unit extending to the opposite side of the gate bar and exposed from the console cover, and the gate bar can be rotated upward and downward by operating the operation unit. The construction machine according to claim 1 or 2 , characterized in that.

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