JP2990222B2 - Construction machine console box flip-up system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a system for flipping up a console box having a control device of a construction machine and returning the console box to its original state when a driver gets on and off the vehicle.

[0002]

2. Description of the Related Art Conventionally, a console box provided with a control device including a control rod of a construction machine is located near a cockpit,
For example, they are arranged on both sides of the cockpit. Therefore, when the operator gets on and off the cockpit, the console box hinders getting on and off. Therefore, a system has conventionally been adopted in which a console box is flipped up and tilted when a driver gets on the vehicle, and the console box can be returned to an original position and steered after getting on the vehicle. In addition, a device that locks a control device is used in the above-described system so that a trouble such as a work implement unexpectedly starting to touch by accidentally touching a control stick or the like during getting on or off may not occur.

[0003] As such a conventional system, for example,
A console box is provided in the vicinity of the cockpit, and the front side of the console box is rotatably mounted on a horizontal shaft provided on the underframe of the cockpit, and the rear end is flipped up (slid or rotated). There are things that you can lean on. Further, in such a system, a get-off shut-off lever (hereinafter, referred to as a “gate bar”) is provided on a side of the console box, and a gate bar flip-up device is provided independently of the console box flip-up device. There is a device in which a limit switch is provided at a rear end position or a gate bar and when a console box or a gate bar is flipped up, a control system of an operation rod is turned off by an operation of the limit switch and locked in an inoperable state.

In the above system, when the operator gets off the vehicle, both the operation of raising the console box and the operation of raising the gate bar must be performed separately, which is cumbersome and inconvenient. A conventional system in which this one-time operation is eliminated and a single flip-up operation is required is disclosed in Japanese Utility Model Publication No. 6-24047. Less than,
This conventional system will be briefly described.

In this system, a console box is provided near a driver's seat. The console box is
It is provided rotatably on a horizontal axis provided on the underframe under the driver's seat, and the operation rod is locked in an inoperable state by the action of the limit switch when the console box is tilted backward. So that the limit switch is arranged.

A gate bar for preventing the driver from getting off is provided on the front side surface of the console box so as to be rotatable in the front-rear direction. The gate bar is provided substantially horizontally when the work machine is operated, and is configured to rotate to a substantially vertical position when getting off the vehicle, thereby opening a getting-off space and facilitating getting off. The gate bar is connected to the console box by a mechanical mechanism, and is configured such that when the gate bar is flipped up substantially vertically, the console box is tilted rearward.

Therefore, when the driver gets off the vehicle, the driver grasps the handle of the gate bar, turns the gate bar forward, and flips up the gate bar to a substantially vertical position. At this time, the console box is also flipped up by the mechanism and tilted rearward to open a space where the driver gets off the vehicle. When returning to the original position, the user grips the handle of the gate bar, rotates the gate bar forward, and returns it to a substantially horizontal state. This also returns the console box to its original position.

[0008]

In the conventional system described above, in order to flip up the gate bar and thus the console box, the handle of the gate bar must be grasped and turned forward. However, since the handle portion is provided at the tip of the gate bar, the handle portion of the gate bar is located in front of the control stick, and when the handle portion of the gate bar is grasped, it comes into contact with the control stick or other switches to operate the working machine. There is a risk of causing malfunctions and inconveniences such as accidents.

SUMMARY OF THE INVENTION The present invention has been made in view of the above background, and has as its object to provide a console box flip-up system which does not cause malfunction due to contact with a control stick or the like at the time of flip-up.

[0010]

In order to solve the above-mentioned problems, a console box flip-up system according to claim 1 supports a console box equipped with a control device of a construction machine, and rotatably supports the console box. First
A support shaft, a second support shaft provided at an appropriate location below the console box, and one end rotatably supported by the second support shaft and the other end sliding with a guide provided on the console box. A connection link that freely engages and controls the rotation of the console box, and is fixedly mounted at an appropriate position on the connection link, and a handle portion is disposed closer to a driver than an operation rod of the control device; An operation member for performing a flip-up and return operation, a gate bar provided at an appropriate position in the vicinity of a cockpit for preventing and allowing a driver to get on and off, and means for locking the console box and the gate bar. When the console box is flipped up, the gate bar is set to an open state allowing entry and exit, and when a return operation is performed, the gate bar is set to a closed state to prevent entry and exit. And locking means, and when the gate bar is open is characterized by comprising a switching means for locking by turning off the operation system of the steering device.

When getting off with the apparatus using the present system, the gate bar is opened by grasping the handle of the operating member. Since the gate bar is neglected by the console box and the locking means, when the gate bar is opened, the console box is also flipped up. In this case, the switch of the operation system is simultaneously turned off. When boarding the vehicle, the driver gets on the vehicle and returns to the closed state by grasping the handle of the gate bar which is in the open state after getting on the vehicle. When the gate bar is closed, the console box is returned to the original state by the locking means. At the same time, the switch of the operation system is turned on. Since the handle is provided on the front side of the device such as the operation rod, there is little danger that a part of the body may unknowingly come into contact with the control device in these operations.

According to a second aspect of the present invention, there is provided a console box flip-up system according to the first aspect, wherein the engagement between the guide and the connecting link is performed by a rotating roller provided at the other end of the connecting link. The console box is in a return state when the rotating roller is at the lower left end of the J-shaped groove, and the rotating roller is at the upper end. , The console box is in a flip-up state. The console box is stabilized by this device, and the console box is not maintained in a stopped state in an intermediate state.

Further, in the console box flip-up system according to the third aspect, in the apparatus according to the first or second aspect, the engagement between the guide and the connecting link is further provided, and the console box is in a return state. In some cases, a spring means is provided for exerting an operating force for maintaining the state, and for exerting an operating force for maintaining the state when the apparatus is in the flip-up state. With this device, the gate bar is stabilized in both the open state and the closed state, and the gate bar is not kept stopped in the intermediate state.

Further, in the console box flip-up system according to a fourth aspect of the present invention, in the apparatus according to the first to third aspects, a rod-shaped member is fixed to a rotatably supported end of the gate bar. A spring means is connected to the rod-shaped member so that the gate bar is stable in both the open state and the closed state.

According to a fifth aspect of the present invention, there is provided the console box flip-up system according to the first to fourth aspects, wherein the locking means for locking the gate bar and the console box is rotatably supported by the gate bar. Along with fixing the rod-shaped member at the end, a projection having an inclined surface is provided at the lower part of the console box, and the end of the rod-shaped member is pushed down by the projection to switch the gate bar from the closed state to the open state, and A hook is provided at an appropriate position on the console box, and the end of the rod-shaped member is hooked by the hook and turned upward to switch the gate bar from the open state to the closed state.

A console box flip-up system according to a sixth aspect of the present invention is the apparatus according to the first to fifth aspects, wherein the switching means for turning on / off the operation system of the control device includes a switch connected to the gate bar supporting portion. It is characterized by having been provided.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a schematic configuration of an embodiment of the present invention. FIG. 2 shows the positional relationship between the driver's seat and the console box in this embodiment. Figure (A) is a front view, and Figure (B) is a side view. FIG. 3 shows a state in which the console box is flipped up.

FIG. 4 shows the engagement relationship between the guide and the connecting link in this embodiment. FIG. 5 is an explanatory diagram of the operation of the portion A in FIG. FIG. 6 shows an example in which the state of the gate bar at two positions is stabilized by a spring. FIG. 7 shows a mechanism in which the gate bar is simultaneously flipped when the console box is flipped. FIG. 8 shows a mechanism for simultaneously returning the gate bar when returning the console box.

In FIG. 2, a console box 13 equipped with an operation rod 12 is arranged on both sides of a cockpit 11. The operation rod 12 is, for example, an operation rod for controlling a work machine drive circuit (not shown) for the left operation rod, and an operation rod for controlling a turning and forward / reverse drive circuit (not shown) for the right operation rod. The operation of the working machine is operated by operating the rod.

As shown in FIG. 1, the console box 13 is rotatably supported in the front-rear direction by a front support shaft 16 fixed horizontally on a table or floor 15 installed in the cabin. Further, a winding spring 14 for generating a rotational moment M is connected between the front support shaft 16 and the console box 13.
A clockwise moment is constantly acting on 3. Also,
A rear support shaft 17 is installed horizontally behind the table 15. One end of a connecting link 18 is rotatably supported by the rear support shaft 17, and a roller 19 is rotatably provided at the other end of the connecting link 18. Roller 1
9 is a guide groove 20 provided in the console box 13
The console box is rotated by the movement of the roller 19. .

The connecting link 18 has a flip-up lever 21 of the console box 13 fixed at an appropriate position, and a handle portion 21a of the flip-up lever 21 is in front of the operating rod 12 in a driving operation state (see FIG. 1). It is provided to be located on the side. As shown in FIG. 3, the console box can be flipped by tilting the flip-up lever 21 toward the front side to flip up. In this case the roller 19
Is located at the upper end of the guide groove 20.

FIG. 4 shows an engagement relationship between the guide groove 20 and the connecting link 18. The guide groove 20 has a J-shape. The lower portion 20a is a portion for holding the console box 13 in a return state or a driving operation state, and the upper portion 20b is a portion for holding the console box 13 in a flip-up state. Stabilizing means are provided to maintain the return state and the flip-up state. Hereinafter, the stabilizing means will be described.

FIG. 5 is an enlarged view of a portion indicated by a circle A in FIG. 4 and shows the relationship of the acting force in the return state. Front support shaft 16
A rotational moment M acts clockwise around the front support shaft 16 on the console box 13 by a winding spring 14 connected between the console box 13 and the console box 13. The resultant force F acts on the connecting link 18 by the rotation moment M. The resultant force F can be decomposed into a component force Fy parallel to the axis of the connecting link 18 and a component force Fx perpendicular to the axis of the connecting link 18 as shown in the figure. The component force Fx acts as a force for pressing the roller 19 in the Fx direction in the figure. Therefore, the return state in which the roller 19 is at the lower left end is a stabilized state.

Further, when the console box 13 is flipped up, that is, when the roller 19 is at the upper end of the guide groove 20 as shown in FIG. 3, a component force perpendicular to the connecting link 18 acts substantially horizontally rightward. It can be understood that the flip-up state becomes a stabilized state. The roller 19
Is between the upper end and the lower end, a component force perpendicular to the connecting link acts to move to the upper end or the lower end, and the state is unstable.

As shown in FIG. 6, a support shaft 32 is provided on the table or floor 15 below the front end of the console box 13, and the gate bar 31 is rotatably supported by the support shaft 32. . At the supporting end of the gate bar 31, a rod-shaped member 33 is fixed at an angle. A spring member 35 made of a spring or the like is connected between the other end of the rod-shaped member 33 and an appropriate support point 34 on the table 15 or the floor. Due to the action of the spring member 35, the gate bar 31 is divided into a closed state (a state shown by a solid line in the figure, ie, a “closed” state) and an open state (a state shown by a dotted line in the figure, ie, an “open” state).
The state is stabilized. The gate bar 31 moves between the open state and the closed state as shown by arrows in the figure.

A contact piece 37 is provided below the gate bar 31 at an appropriate position. The contact piece 37 contacts the contact 39 of the limit switch 38 when the gate bar 31 is in the closed state. A switch 38 is provided. The output terminal of the limit switch 38 is connected to the operation circuit of the working machine. When the limit switch 38 is in the “ON” state, that is, when the gate bar 31 is in the “closed” state, the operation circuit operates normally. Are connected so that the operation circuit is locked to the disabled state when the gate is in the "off" state, that is, when the gate bar 31 is in the "open" state.

FIGS. 7 and 8 show the locking relationship between the console box 13 and the gate bar 31 according to the present embodiment. As shown in FIG.
Is provided with a projection 41 at the lower part of. The projection 41 has an inclined surface so that the moment for rotating the gate bar 31 is increased.

The projection 41 is not in contact with the rod-shaped member 33 at the time of driving operation, but when the console box 13 is flipped up, a force for rotating in the direction of the arrow is generated. The rod-shaped member 33 is pressed in contact with the tip end portion 42 of the rod-shaped member 33 in the direction of arrow S. When the pressing force in the S direction overcomes the reaction moment generated by the weight of the spring 35 and the gate bar 31, etc., the rod 33 and the gate bar 31 rotate clockwise, and the gate bar 31 is changed from the closed state to the open state (FIG. 6).
(A state indicated by a dotted line). Once opened, the console box 13 and gate bar 31
Are both in a stabilized state and maintain that state.

A hook 44 is provided at a lower portion of the console box 13, and the hook 44 is
A hook 44a, which can be locked to the tip 42 of the third, is provided at the lower end. When the gate bar 31 is in the closed state, even if the console box 13 is flipped up, the hook 44 is not locked with the rod-shaped member 33 (solid line in the figure). However, when the gate bar 31 is opened by the flip-up operation of the console box 13 or the like, the hook 44a and the tip 33 are locked (dotted line in the figure). Therefore, when the console box 13 is returned from this state, the gate bar 31 is also changed from the open state to the closed state together with the return of the console box 13.

This embodiment is configured as described above, and functions as follows. When the operator gets off the vehicle, the operator grips the handle 21a of the flip-up lever 21 and pulls it toward the user. By this operation, the connecting link 18 rotates clockwise, and the roller 19 moves to the upper end while sliding from the lower end along the guide groove 20. As a result, the console box 13 is brought into the state shown in FIG. At this time, the projection 41 provided at the lower part of the console box 13 presses the tip end portion 42 of the rod-shaped member 33 and rotates it clockwise. Therefore, the gate bar 31 also rotates clockwise and switches to the open state. At the same time, the limit switch 38 is turned off, and the operation circuit is locked in an inoperable state.

Next, when the operator gets on the vehicle, the gate bar 31 is in the open state, and the console box 13 is also in the state of being flipped up. Therefore, the operator sits down, grasps the handle 21a of the flip-up lever 21, and pushes forward. With this operation, the roller 19 moves from the upper end to the lower end along the guide groove, and at the same time, the console box 13 returns to the original position. At this time, the hook 44 provided at the lower part of the console box 13 flips the tip of the bar-shaped member 33 counterclockwise, and the gate bar 31 returns to the original closed state by the action of the spring 35. When the gate bar 31 completely returns to the original position, the limit switch 38
Is turned on, and the operation circuit is unlocked to be operable.

In this embodiment, as is apparent from the above-described configuration and function, the flip-up operation and the return operation of the console box 13 and the opening / closing operation of the gate bar 31 can be performed only by operating the flip-up lever 21. Locking and unlocking of the circuit are performed simultaneously. For this reason,
There is an effect that the operation at the time of getting on and off can be performed easily and reliably. Further, since the handle portion 21a of the flip-up lever 21 is arranged on the front side of the operation rod 12, there is no effect of accidentally touching the operation rod and causing a malfunction in the above operation, and there is an effect that the operation can be performed safely. . Further, the console box 13 is stabilized in both the flipped up state and the return state, and the gate box 3
1 is also stabilized in two states of opening and closing, so that there is an effect that a stable operation becomes possible.

Although the embodiments and examples of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to the examples, and the design can be changed without departing from the scope of the present invention. The present invention is included in the present invention. For example, the limit switch 38 may be disposed near the console box, and the winding spring 14 may use another shape of a spring or an elastic body.

[0034]

As described above, according to the configuration of the first aspect of the present invention, in addition to the effect that the operation at the time of getting on and off can be performed easily and reliably, the handle of the flip-up lever is operated. Since it is arranged on the front side of the rod, there is no effect of accidentally touching the operation rod in the above operation to cause a malfunction, and there is an effect that the operation can be performed safely.

[Brief description of the drawings]

FIG. 1 shows a schematic configuration of an embodiment of the present invention.

FIG. 2 shows a positional relationship between a driver's seat and a console box in this embodiment. FIG. 2A is a front view, and FIG.
(B) is a side view.

FIG. 3 shows a state in which a console box is flipped up.

FIG. 4 shows an engagement relationship between a guide and a connecting link in the present embodiment.

FIG. 5 is an enlarged view of a portion S in FIG. 4;

FIG. 6 shows an example in which the state of the gate bar at two positions is stabilized by a spring.

FIG. 7 shows a mechanism in which a gate bar is simultaneously flipped when the console box is flipped.

FIG. 8 shows a mechanism for simultaneously returning the gate bar when returning the console box.

[Explanation of symbols]

 REFERENCE SIGNS LIST 11 cockpit 12 control stick 13 console box 14 winding spring 16 front support shaft (first support shaft) 17 rear support shaft (second support shaft) 18 connecting link 19 roller 20 guide groove (guide) 21 flip-up lever 31 gate bar 38 Limit switch 41 Projection (locking means) 44 Hook (locking means)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) E02F 9/20 E02F 9/16

Claims (6)

(57) [Claims] 1. A console box equipped with a control device for a construction machine, a first support shaft rotatably supporting the console box, and a second support shaft provided at an appropriate position below the console box. A connection link having one end rotatably supported by the second support shaft and the other end slidably engaged with a guide provided on the console box to control rotation of the console box; An operation member for operating the flip-up and return operations of the console box, and a handle portion disposed on the driver side from the operation rod of the control device, and an appropriate position near the cockpit. A gate bar provided at a position for preventing and allowing the operator to get on and off, and means for locking the console box and the gate bar, when the console box is flipped up Locking means for bringing the gate bar into an open state permitting entry / exit, and closing the gate bar to prevent entry / exit when a return operation is performed; and operating the control device when the gate bar is open. And a switching means for turning off the system. 2. The engagement between the guide and the connecting link includes a rotating roller provided at the other end of the connecting link and a rail groove in which the rotating roller is fitted. The rail groove is formed in a J-shape, The console box is in a return state when the rotary roller is at the lower left end of the J-shaped groove, and the console box is in a flipped up state when the rotary roller is at the upper end. The console box flip-up system of the construction machine described. 3. The engagement between the guide and the connecting link further exerts an operation force for maintaining the console box when the console box is in a return state, and an operation force for maintaining the state when the console box is in a flip-up state. The console box flip-up system for a construction machine according to any one of claims 1 and 2, further comprising a spring means for operating the console box. 4. The construction according to claim 1, wherein spring means is connected so that the gate bar is in a stable state in both the open state and the closed state. Machine console box flip-up system. 5. A locking means for locking the gate bar and the console box, wherein a rod-shaped member is fixed to a rotatably supported end of the gate bar, and a projection having an inclined surface is provided at a lower portion of the console box. The gate bar is switched from the closed state to the open state by pushing down the end of the bar-shaped member by the projection, and a hook is provided at an appropriate position of the console box, and the end of the bar-shaped member is hooked by the hook. 5. The console box flip-up system for a construction machine according to claim 1, wherein the gate bar is switched from an open state to a closed state by rotating the gate bar upward. 6. 6. The construction machine according to claim 1, wherein the switching means for turning on / off the operation system of the control device includes a switch provided on the gate bar supporting portion. Console box jumping system.