JP6061565B2 - Gate lever device for construction equipment - Google Patents

Description

  The present invention relates to a gate lever device which is provided in construction equipment such as a hydraulic excavator and prevents getting on and off during operation.

  2. Description of the Related Art Conventionally, in construction equipment such as a hydraulic excavator, a driver's seat is provided in a cabin, and entrances for getting on and off the driver's seat are provided on the left and right sides. In the cabin, console boxes are arranged on both the left and right sides of the driver's seat, and a steering control lever is projected from the console box.

  In this type of construction equipment, a gate lever is generally provided in a console box facing the entrance / exit of the left and right console boxes. The gate lever is for preventing boarding / exiting at the time of operation, and is configured to close the entrance / exit during operation and to open at the time of boarding / exiting.

  With regard to such a gate lever, for example, Patent Document 1 discloses a mechanism in which the gate lever pops up in conjunction with the console box being flipped up.

JP-A-10-280484

  However, since the above-described conventional mechanism has a structure in which the console box is lifted upward, there is a risk that the operation lever or the like hits the operator's body when the console box is lifted upward.

  In addition, in the above-described conventional mechanism, since the gate lever is lifted upward, the gate lever protrudes upward from the console box, and when getting on and off, an operator's arm hits the gate lever and hinders getting on and off. There was a problem.

  SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a gate lever device for construction equipment that does not require the console box to be lifted up when the gate lever is opened, and that does not interfere with getting on and off when the gate lever is opened. To do.

  The present invention has been made to solve the above-described problems, and is characterized by the following.

(Claim 1)
The invention described in claim 1 is characterized by the following points.

That is, the gate lever device for construction equipment according to claim 1 is a gate lever device for construction equipment for preventing getting on and off at the time of maneuvering, and a console box disposed beside the driver's seat and the driver's seat. A gate lever that is removably attached to the console box in order to block the entrance / exit passage, and an urging means that urges the gate lever in a direction to open the entrance / exit passage. It has a horizontal bar portion that can protrude into the getting-on / off passage, and a vertical bar portion that protrudes above the console box, and the console box can slide and rotate the horizontal bar portion of the gate lever. a support for supporting a guide groove for guiding movement of said gate lever, is formed, the guide groove linearly along the sliding direction of the gate lever Comprising a guide portion provided, and a locking portion to form a hook shape by bending the front end of the guide portion on the guide portion and the same plane, the locking unit, by engagement with the gate lever and wherein a call to lock the return of the gate lever against the biasing force of the biasing means.

(Claim 2)
The invention described in claim 2 has the following features in addition to the features of the invention described in claim 1 described above.

  That is, a switch that operates when the lock portion and the gate lever are engaged is provided inside the console box, and the construction equipment can be operated by operating the switch. And

  The invention according to claim 1 is as described above, and the gate lever is attached to the console box so as to be able to appear and retract in order to block the entrance / exit passage to the driver's seat. Operation can be simplified. Further, since the gate lever is retracted in the direction in which it is accommodated in the console box, the gate lever can be retracted to a position that does not interfere with getting on and off.

  Moreover, since the gate lever has a horizontal bar portion that can protrude into the getting-on / off passage and a vertical bar portion that protrudes above the console box, the gate bar can be operated by operating the vertical bar portion. The getting-on / off passage can be blocked. For this reason, it is possible to easily operate the gate lever while sitting in the driver's seat.

  Also, provided with a biasing means for biasing the gate lever in a direction to open the entrance / exit passage, the console box includes a support portion that supports the horizontal bar portion of the gate lever so as to be slidable and rotatable. A guide groove for guiding the movement of the gate lever is formed, and an end portion of the guide groove is engaged with the gate lever to resist the biasing force of the biasing means. A lock portion is provided for locking the return. For this reason, by engaging the lock portion and the gate lever, it is possible to maintain the state where the entrance / exit passage is closed by the gate lever, and if the engagement between the lock portion and the gate lever is released, the biasing means is attached. Since the gate lever is automatically moved to the retracted position by the force, the entrance / exit passage can be instantly secured even in an emergency.

  The invention according to claim 2 is as described above, and a switch that operates when the lock portion and the gate lever are engaged is provided in the console box, and the switch operates. Thus, since the construction equipment can be operated, the construction equipment is not operated in a state where the gate lever does not close the entrance / exit passage, and safety can be ensured.

It is the figure which looked at the cabin of construction equipment from the top. It is a figure explaining the internal structure of a gate lever apparatus, Comprising: (a) The figure which looked at a part of gate lever apparatus from the top in the state which opened the entrance / exit passage, (b) The gate lever apparatus from the side FIG. It is a figure explaining the internal structure of a gate lever apparatus, Comprising: (a) The figure which looked at a part of the gate lever apparatus from the top in the state which operated the gate lever in the direction which interrupts a boarding / alighting path, (b) Gate It is the figure which looked at the lever apparatus from the side. It is a figure explaining the internal structure of a gate lever apparatus, Comprising: (a) The figure which looked at a part of gate lever apparatus from the top in the state which interrupted the entrance / exit passage, (b) Gate lever apparatus from the side FIG.

  Embodiments of the present invention will be described with reference to the drawings.

  In the present embodiment, a hydraulic excavator will be described as an example of construction equipment. As shown in FIG. 1, the hydraulic excavator according to the present embodiment is provided with a driver seat 40 in a cabin 42, and an entrance 43 for getting on and off the driver seat 40 is provided on the left hand side. Yes. In the cabin 42, the console box 11 is disposed on both the left and right sides of the driver's seat 40, and a steering control lever 17 is provided on the console box 11 so as to protrude.

  Further, the left console box 11 facing the entrance 43 is provided with a gate lever device 10 for preventing boarding / exiting during maneuvering. The gate lever 20 constituting a part of the gate lever device 10 is attached to the console box 11 so as to be able to appear and retract. During the operation, the gate lever 41 is shut off and the entrance 43 is closed. It is formed so as to open the entrance 43.

  As shown in FIGS. 2 to 4, the gate lever 20 is a bar-shaped member having a substantially L shape in side view, and a vertical bar whose upper end protrudes above the console box 11 and a horizontal bar 21 that can protrude into the passenger passage 41. And a bar portion 23. A grip 24 is provided at the upper end of the vertical bar portion 23 so that an operator seated in the driver's seat 40 can operate the gate lever 20 by opening and closing the grip 24 by operating the grip 24. Is formed.

  As shown in FIGS. 2 to 4, the gate lever 20 is constantly urged by the urging means 30 in a direction in which the entrance / exit passage 41 is opened (a direction in which it is accommodated in the console box 11). Specifically, an urging means 30 comprising a compression spring is provided between the support portion 12 formed on the console box 11 and the spring receiving portion 22 formed on the horizontal bar portion 21 of the gate lever 20. The gate lever 20 is urged in the retracting direction by the urging force of the urging means 30.

  The support portion 12 of the console box 11 described above is provided with a support hole 12a through which the horizontal bar portion 21 of the gate lever 20 passes. By passing through the support hole 12a, the horizontal bar portion 21 of the gate lever 20 is supported so as to be slidable and rotatable in the horizontal direction with respect to the console box 11.

  Further, a guide plate 13 is formed in the vicinity of the upper portion of the console box 11 so as to protrude sideways, and a guide groove 14 for penetrating the vertical bar portion 23 of the gate lever 20 is formed through the guide plate 13. Has been. The guide groove 14 is for guiding the movement of the gate lever 20 and is bent at the guide portion 15 provided linearly along the sliding direction of the gate lever 20 and at the front end of the guide portion 15. And a lock portion 16 forming a hook shape. The lock portion 16 is for locking the return of the gate lever 20 against the urging force of the urging means 30 by engaging with the gate lever 20.

  In addition, as shown in FIGS. 2 to 4, a switch 31 is provided inside the console box 11 to enable the construction equipment to be operated. The switch 31 is electrically connected to a construction equipment control device (not shown), and the control device is configured to operate the construction equipment engine only when the switch 31 is in operation. Yes. Specifically, the switch 31 is configured to operate when the lock portion 16 and the gate lever 20 described above are engaged, and when the switch 31 is operated, an operation signal is output to the control device. The control device operates the engine when an engine start operation is executed while receiving an operation signal from the switch 31, but the engine start operation is not performed when the operation signal from the switch 31 is not received. Even if it is executed, the engine is not operated.

  FIG. 2 is a view showing a state in which the gate lever 20 of the gate lever device 10 is in the retracted position. As shown in FIG. 2, the gate lever 20 is urged by the urging means 30 so as not to unintentionally jump out of the retracted position, and the horizontal bar portion 21 remains in the console box 11 even when vibration or the like is applied. It is designed not to protrude forward. At this time, the switch 31 and the gate lever 20 are not in contact with each other, and the switch 31 is not activated.

  In order to block the entrance / exit passage 41 with the gate lever 20 from this state, as shown in FIG. 3, the grip 24 of the gate lever 20 is gripped and pushed forward to resist the biasing force of the biasing means 30. Slide forward. By this operation, the horizontal bar portion 21 protrudes in front of the console box 11 and blocks the passenger passage 41.

  And after sliding the gate lever 20 to the front end of the guide part 15 of the guide groove 14, the gate lever 20 is tilted and rotated. Then, as shown in FIG. 4, the vertical bar portion 23 of the gate lever 20 enters the lock portion 16 of the guide groove 14. When the gate lever 20 enters the lock portion 16, the gate lever 20 is attracted by the urging force of the urging means 30, so that the state in which the gate lever 20 and the lock portion 16 are engaged is maintained and the gate lever 20 is returned. Locked. At this time, since the switch 31 and the gate lever 20 are in contact with each other, the contact of the switch 31 is turned on, and the switch 31 is activated (the construction equipment can be operated).

  By the operation as described above, the entrance / exit passage 41 is blocked by the gate lever 20.

  On the contrary, when the gate lever 20 is retracted and the entrance / exit passage 41 is opened, the gate lever 20 is slightly pushed forward from the state shown in FIG. Move to. Then, when the engagement between the gate lever 20 and the lock portion 16 is released, the gate lever 20 automatically moves in the retracting direction by the urging force of the urging means 30.

  As described above, according to the present embodiment, since the gate lever 20 is attached to the console box 11 so as to be able to go in and out in order to block the entrance / exit passage 41 to the driver's seat 40, the console box 11 is lifted up. There is no need and the operation can be simplified. Further, since the gate lever 20 is retracted in the direction in which it is accommodated in the console box 11, the gate lever 20 can be retracted to a position that does not interfere with getting on and off.

  Further, since the gate lever 20 has a horizontal bar portion 21 that can protrude into the getting-on / off passage 41 and a vertical bar portion 23 that protrudes above the console box 11, the vertical lever portion 23 is operated. Thus, the entrance / exit passage 41 can be blocked by the horizontal bar portion 21. For this reason, it is possible to easily operate the gate lever 20 while sitting in the driver's seat 40.

  Further, a biasing means 30 for biasing the gate lever 20 in a direction to open the entrance / exit passage 41 is provided, and the console box 11 is slidable and pivotable on the horizontal bar portion 21 of the gate lever 20. A supporting portion 12 for supporting and a guide groove 14 for guiding the movement of the gate lever 20 are formed, and the end of the guide groove 14 is engaged with the gate lever 20 to engage the biasing force. A lock portion 16 is provided for locking the return of the gate lever 20 against the urging force of the means 30. Therefore, by engaging the lock portion 16 and the gate lever 20, the state where the entrance / exit passage 41 is closed by the gate lever 20 can be maintained, and the engagement between the lock portion 16 and the gate lever 20 can be released. Since the gate lever 20 is automatically moved to the retracted position by the urging force of the urging means 30, the boarding / alighting passage 41 can be instantly secured even in an emergency.

  In addition, a switch 31 that operates when the lock portion 16 and the gate lever 20 are engaged is provided inside the console box 11, and the construction equipment can be operated by operating the switch 31. Therefore, the construction equipment is not operated without the gate lever 20 closing the entrance / exit passage 41, and safety can be ensured.

DESCRIPTION OF SYMBOLS 10 Gate lever apparatus 11 Console box 12 Support part 12a Support hole 13 Guide plate 14 Guide groove 15 Guide part 16 Lock part 17 Control lever 20 Gate lever 21 Horizontal bar part 22 Spring receiving part 23 Vertical bar part 24 Grip 30 Energizing means 31 Switch 40 Driver's seat 41 Boarding passage 42 Cabin 43 Boarding gate

Claims (2)

A gate lever device for construction equipment for preventing getting on and off during operation,
A console box arranged beside the driver's seat;
A gate lever that is removably attached to the console box to block the boarding passage to the driver's seat;
Urging means for urging the gate lever in a direction to open the getting-on / off passage;
With
The gate lever has a horizontal bar portion that can protrude into the getting-on / off passage, and a vertical bar portion that protrudes above the console box,
The console box is formed with a support portion for supporting the horizontal bar portion of the gate lever so as to be slidable and rotatable, and a guide groove for guiding the movement of the gate lever,
The guide groove includes a guide portion that is linearly provided along the sliding direction of the gate lever, and a lock portion that is bent at the front end of the guide portion on the same plane as the guide portion to form a hook shape. , wherein the locking unit is characterized that you locking the return of the gate lever against the biasing force of the biasing means by engagement with the gate lever and the gate lever system for construction equipment .   A switch that is activated when the lock portion and the gate lever are engaged is provided inside the console box, and the construction equipment can be operated by operating the switch. A gate lever device for construction equipment according to claim 1.

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