JP2002070079A - Console box for construction equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a console for construction equipment, enabling the facilitation of a change from an operating mode to a non-operating mode in a console box and the holding and release of each of the modes. SOLUTION: The console box 6 is provided with a gate lock lever 13, a rotating frame 8, a fixed frame 7, an engaging member 11 installed in the rotating frame 8 whose rotational motion is regulated by a locking projection 12 formed in the fixed frame 7, and a locking damper 16 installed between the engaging member 11 and the fixed frame 7. In the console box 6, the locking damper 16 is disposed in such a manner that rotating force to the side of an operating position is imparted to the engaging member 11 by the locking damper 16 when the console box 6 is located in the operating position and reverse rotating force is imparted thereto when the console box 6 is located in the non-operating position. The disposition of the locking damper 16 enables the facilitation of the change from the operating mode to the non-operating mode in the console box 6 and the holding and release of each of the modes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a hydraulic excavator,
It is provided on construction equipment such as bulldozers and has a gate lock lever for opening and closing the passage when getting on and off the driver's cab. The present invention relates to a console box of a construction machine provided with a locking mechanism for securely holding the position at each position.

[0002]

2. Description of the Related Art Generally, in a construction machine such as a hydraulic excavator, a console box is provided beside a driver's seat. The console box is vertically rotatable between a working position and a non-working position, and is held at the working position during operation of the construction machine. Further, when the construction machine is stopped, it is held at the non-working position, and in this state, the work by the construction machine cannot be performed. For example,
When the construction machine is stopped and the driver gets on and off from the driver's seat, the gate lock lever integrally provided on the console box rotates the working position upward from the working position to the non-working position, so that the driver gets on and off. The working passage is secured and the gate lock valve is closed so that the working actuator does not operate. However, if the console box rotates regardless of the driver's intention due to, for example, vibration of the vehicle body when the console box is in the working position, the gate lock valve may be closed and the operation of the construction machine may be disabled. In addition, if the driver accidentally touches the console box while in the non-working position, the console box may rotate to the working position.

In order to solve such a problem, Japanese Patent Application Laid-Open No. Hei 9-13425 discloses a constitution in which a guide arm rotatably provided on a console box is detachably engaged with a pin roller on a skeleton side. When the console box is in the working state, the first sub-guide provided on the guide arm is locked with a pin roller, and when the console box is in the non-working state, the first sub-guide is provided on the guide arm. A locking mechanism that locks and holds the console box between a working position and a non-working position by locking the two sub-guides with the pin roller is disclosed.

[0004]

However, in the above-mentioned console box of the conventional construction machine, a locking damper is provided on the skeleton side, a spring serving as a locking ammunition is provided on the console box side, and the console box is turned. Gas springs for applying power are required. For this reason, there are problems that the number of parts is large, the structure is complicated, the assembly takes a long time, and the cost increases.

The present invention reduces the number of parts, facilitates assembly, reduces costs, and reduces the size of the mechanism by providing a single locking damper, for example, a gas spring, with both functions of a locking function and a rotating power imparting function. The purpose is to do.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a fixed frame which is arranged on the side of a driver's seat of a construction machine and is provided integrally with a vehicle body. A pivot frame rotatably supported in a vertical direction between a position and a non-operation position above the operation position by a predetermined angle, and an engaging member provided in the rotation frame to be rotatable in the vertical direction And a locking member provided on the fixed frame, wherein the engaging member engages with the locking member when the rotating frame is at the working position, and A first engaging portion for preventing rotation of the frame to the non-working position side, and engaging the locking member when the rotating frame is located at the non-working position; A second engaging portion for preventing rotation to the working position side is formed; While the first engagement portion and the locking member are engaged between the fixed frame and the engagement member, the engagement member is urged in one direction while the second engagement portion is In a console box for a construction machine provided with a locking damper for urging the engaging member in the other direction in a state where the locking damper is engaged with the locking member, the locking damper is connected to the fixed frame and the locking frame. The line connecting the connecting point with the damper and the connecting point between the engaging member and the locking damper is when the first engaging portion is engaged with the locking member, When the engaging portion is engaged with the locking member, the engaging portion is disposed on the opposite side with the center of rotation of the engaging member therebetween, and the fixing frame and the locking The connecting point with the damper is provided below the connecting point between the engaging member and the locking damper. Accordingly, characterized by imparting a rotational force to the non-working position the pivotal frame from the working position.

In the present invention constructed as described above, when the rotating frame is located at the working position, the first engaging portion provided on the engaging member is engaged with the engaging member. Then, in this state, the locking damper presses the engaging member in one direction. On the other hand, when rotated to the non-working position, the second engaging portion is in a state of being engaged with the locking member, and the locking damper is in the opposite side to the case where the locking damper is in the working position. Press the engagement member. Thereby, the console box is securely locked in the working state and the non-working state. Also,
At the time of rotation, the connecting point between the fixed frame and the locking damper is provided below the connecting point between the engaging member and the locking damper, so that the driving force of the locking damper is increased. And the turning frame can be easily turned from the working position to the non-working position without giving a large operating force.

Accordingly, one locking damper can be provided with a locking function and a rotating power imparting function, so that the number of parts can be reduced, the cost can be reduced, and the mechanism can be downsized.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 7 show a first embodiment according to the present invention.
FIG. 1 is a side view of a hydraulic excavator as a construction machine, FIG. 2 is a state diagram of a console box in a working position, FIGS. FIG. 6 is a state diagram of the console box in the non-working position, and FIG. 7 is a diagram showing a positional relationship between the engaging member and the locking damper in the working position and the non-working position.

As shown in FIG. 1, a hydraulic excavator 1 includes a crawler type lower traveling body 2, an upper revolving body 3 rotatably supported above the lower traveling body 2, and a front end of the upper revolving body 3. The work unit 4 includes a bucket, an arm, a boom, and the like to be connected. These are hydraulically operated by the power of an engine (not shown) mounted on the rear part of the upper revolving unit 3, and all of these basic configurations are conventional.

Reference numeral 5 denotes an operator's cab arranged on the upper revolving unit 3, and console boxes 6 are arranged on both left and right sides of the operator's cab 5. A work operation lever 20 is provided for operating various work hydraulic actuators (not shown) that drive the upper swing body 3 and the work unit 4. Further, the console box 6 is provided with a gate lock lever 13 for opening and closing the passage for getting on and off the operator's cab 5.

The console box 6 has a fixed frame 7 and a rotating frame 8 as shown in FIG. 2, and the fixed frame 7 is fixed to a driver's seat. Fixed frame 7
, The pivot frame 8 is attached via a support pin 9,
The rotating frame 8 is provided so as to be rotatable with respect to the fixed frame 7 about a center axis O1 of the support pin 9.

A support pin 10 is provided on the rotation frame 8 in parallel with the support pin 9, and an engagement member 11 is attached to the rotation frame 8 by the support pin 10. The engaging member 11 has an arc-shaped guide groove 11 whose radius is the distance between the center axis O1 of the support pin 9 and the locking projection 12.
a is formed. On one side surface of the upper end portion of the guide groove 11a, an arc-shaped upper horizontal groove (first engaging portion) 11b centered on the central axis O2 of the support pin 10 in a direction away from the central axis O1 is provided. On one side surface of the lower end portion of the guide groove 11a, an arc-shaped lower lateral groove (second engagement portion) 11c centering on the central axis O2 is formed in a direction approaching the central axis O1.

On the other hand, a locking projection (locking member) 12 is fixedly provided on the fixed frame 7.
In the working state shown in FIG. 2, it is in the upper transverse groove 11b, in the non-working state shown in FIG.
a.

The engaging member 11 has a support pin 14
And a support pin 15 is provided on the fixed frame 7 side, and a locking damper 16 is provided by the two support pins 14 and 15.
Is provided between the engaging member 11 and the fixed frame 7. In the working state shown in FIG. 2, the line connecting the center axis O3 of the support pin 14 and the center axis O4 of the support pin 15 is smaller than the line connecting the center axis O2 of the support pin 10 and the center axis O4. In a non-working state shown in FIG. 6, the center shaft 03 of the support pin 14 and the support pin 1
The line connecting the center axis O4 of the support pin 10 is provided below the line connecting the center axis O2 of the support pin 10 and the center axis O4.

The first embodiment according to the present invention is configured as described above, and in the working state shown in FIG. 2, the fixing position of the locking damper 16 on the engaging member 11 side (by the support pin 14). (Fixed) is above the connecting position of the engaging member 11 to the rotating frame 8 (connecting by the support pin 10), and the locking damper 16 always exerts a force in the direction of extension of the cylinder. A rotational force is applied to the member 11 from the locking damper 16 in the direction of arrow A (counterclockwise) shown in FIG. On the other hand, the locking projection 12 is located in the upper lateral groove 11b in this state, and thus, in this working state,
The locking damper 16 presses the locking projection 12 against the lower side of the upper horizontal groove 11b, thereby forming the upper horizontal groove 1 of the locking projection 12.
1b is prevented. For this reason, unless the engaging member 11 is turned in the direction of the arrow B artificially against the damper 16 for locking, the locking projection 12 does not come out of the upper horizontal groove 11b, whereby the rotating frame 8 is moved. It is maintained in a working position.

Further, even if the turning frame 8 is turned to the non-working position side due to, for example, vibration of the vehicle body, the turning of the engaging member 11 is restricted by the upper lateral groove 11b. Unless the gate lock lever 13 is operated to rotate the engaging member 12 in the direction of arrow B, the rotating frame 8 does not rotate from the working position to the non-working position.

When the gate lock lever 13 is operated to the non-working position side from this state, at the beginning of the operation, the engaging member 11 is turned in the direction B (clockwise) from the gate lock lever 13 as shown in FIG. Power is applied to the engaging member 1
1 rotates around the center axis O2 of the support pin 10. As described above, the upper lateral groove 11b is formed between the central axis O2 and the locking projection 12
Are formed in an arc shape whose radius is the distance between the upper lateral groove 11b and the guide groove 11a.
Gradually (actually, the locking projection 12 is fixed to the fixed frame 7 and the upper lateral groove 11b of the engaging member 11 rotates while sandwiching the locking projection 12).

When the gate lock lever 13 is further operated from the state shown in FIG. 3 to the non-working position side, as shown in FIGS. 4 and 5, the rotating frame 8 is turned around the center axis O1 of the support pin 9 in the direction of arrow B. (Clockwise). As described above, the guide groove 11a of the engagement member 11 is provided in an arc shape having a radius equal to the distance between the center axis O1 of the support pin 9 and the locking projection 12, and is engaged with the rotation of the rotation frame 8. The joining member 11 rotates with respect to the fixed frame 7. When the turning frame 8 is turning, the engaging member 11 does not turn relatively to the turning frame 8. Further, as described above, the locking damper 16 always exerts a force in the cylinder extending direction, so that the gate lock lever 13
The turning frame 8 can be turned even if the operation force is extremely small.

When the gate lock lever 13 is further operated toward the non-working position, the locking projection 12 comes into contact with the lower end of the guide groove 11a, as shown in FIG. You. On the other hand, as described above, the lower lateral groove 1
1c is provided in an arc shape having a radius equal to the distance between the central axis O2 of the support pin 10 and the locking projection 12, and the locking projection 12 is engaged by operating the gate lock lever 13 as shown in FIG. The joint member 11 is located in the lower lateral groove 11c. That is, apparently, the locking projection 12 is formed by the lower lateral groove 11c.
And only the engaging member 11 is moved to the center axis O2.
About the turning frame 8 in the direction of arrow B (counterclockwise).

In the non-working position shown in FIG. 6, the fixing position of the locking damper 16 on the engaging member 11 side (fixed by the support pin 14) is set with respect to the rotating frame 8 of the engaging member 11. Connection position (connection by support pin 10)
Because it is located below, the engaging member 11 is
6, a turning force is applied in the direction of arrow B (clockwise) shown in FIG. On the other hand, since the locking projection 12 is located in the lower horizontal groove 11c in this state, in this non-working state, the locking damper 16 presses the locking projection 12 below the lower horizontal groove 11c. Lower lateral groove 11c of locking projection 12
Prevent from leaving. For this reason, unless the engaging member 11 is turned in the direction of arrow A artificially against the damper 16 for locking, the locking projection 12 does not come out of the lower lateral groove 11c. It is maintained in a non-working position.

In this non-working state, even if the operator accidentally touches the turning frame 8 and the turning frame 8 tries to turn to the working position, for example, the locking projections 12 remain above the lower lateral groove 11c. Hit the side. Therefore, unless the locking member 13 is operated to rotate the engaging member 11 in the direction of arrow A to disengage the locking projection 12 from the lower lateral groove 11c to the guide groove 11a, the rotating frame 8 is moved from the non-working position. It does not rotate to the working position.

The working force of the locking damper 16 on the engaging member 11 in the working state and the non-working state will be described in detail with reference to FIG. As shown by the solid line in FIG. 7, in the working state, the angle formed by the line connecting the center axis O2 and the center axis O4 and the line connecting the center axis O2 and the center axis O3 is θ1. On the other hand, in the non-working state, as shown by the two-dot chain line, the engaging member 11 is rotated in the direction of arrow B, so that the line connecting the central axes O3 and O4 is positioned below the central axis O2. . That is, the pressing force of the locking damper 16 against the engaging member 11 acts in the direction of arrow A in the working state and in the direction of arrow B in the non-working state. The biasing direction switches. When the line connecting the central axes O3 and O4 coincides with the central axis O2, the locking damper 16
Is zero.

In this embodiment, if the rotation angle when the engaging member 11 is rotated until the locking projection 12 abutting on the end of the upper horizontal groove 11b comes out of the guide groove 11a is θ2, then θ1 <Θ2. That is, when the engaging member 11 is rotated in the direction of arrow B from the working state shown in FIG. 2, the locking damper 16 acts on the engaging member 11 in the direction of arrow A at the beginning of the rotation. However, when the locking projection 12 reaches a position slightly before the position where it comes out of the upper lateral groove 11b, the urging force of the locking damper 16 changes in the direction of arrow B. As a result, the engaging member 11 is rotated in the direction of arrow B by the engaging damper 16, and
Escapes from the upper lateral groove 11b and enters the guide groove 11a.

As described above, in the console box 6 according to the present embodiment, the urging means for bringing the rotating frame 8 into the locked state between the working position and the non-working position with one locking damper 16. , And the function of the rotation urging means from the working position to the non-working position, the cost can be reduced and the size of the mechanism can be reduced.

Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 8 is a diagram showing a relationship between the engaging member 11 and the locking projection 12, and FIG. 9 is a cross-sectional view taken along line MM shown in FIG.

As shown in FIG. 8, this second embodiment is
A gear is provided for each of the guide groove 11a, the upper horizontal groove 11b, the lower horizontal groove 11c, and the locking projection 12 of the engaging member 11, and a washer 19 is provided on the head of the locking projection 12. However, the washer 19 may be a bolt or the like as long as it has a retaining function. Other configurations are the same as those of the first embodiment described above, and description thereof will be omitted.

In the second embodiment configured as described above, as shown in FIG. 9, the guide groove 11a and the upper and lower
The gears provided on the b and 11c and the gear provided on the locking projection 12 mesh with each other, and the state can be more reliably maintained particularly at the working position and the non-working position. Further, by providing the washer 19 on the head of the locking projection 12, it is possible to prevent the engaging member 11 from coming out of the locking projection 12 due to, for example, vibration of the vehicle body during operation of the hydraulic shovel 1.

Next, a third embodiment of the present invention will be described with reference to FIG. In the third embodiment, one end of a push-pull cable is fixed to an engaging member, and the other end is fixed to a gate lock valve, and the gate lock valve is mechanically switched.

As shown in the figure, a push-pull cable 17 according to the third embodiment has a gate lock valve 18.
To open and close the valves to switch the drive system of the excavator 1 between the start state and the stop state. The distal end portion 17a of the push-pull cable 17 is fixed to the engagement member 11,
The intermediate portion 17b is fixed to the fixing frame 7. Other configurations are the same as those of the first embodiment described above, and description thereof will be omitted.

When the lever 13 is used to rotate the engaging member 11 in the direction of arrow B until the locking projection 12 enters the guide groove 11a from the upper lateral groove 11b, the length L of the push-pull cable 17 becomes ΔL = L1 -Change by L2. The gate lock valve 18 is pushed and pulled by this change ΔL, and the valve position is switched. Thereby, the engagement member 11
The gate lock valve 18 can be opened and closed by the rotation of.

[0032]

As described above, according to the present invention,
A line connecting a connecting point between the fixing frame and the locking damper, and a connecting point between the engaging member and the locking damper is formed by engaging the first engaging portion with the locking member. And when the second engaging portion is engaged with the locking member, the engaging member is disposed so as to be located on the opposite side with the rotation center therebetween, and further, the fixed frame Since the connecting point with the locking damper is provided below the connecting point between the engaging member and the locking damper, the rotation frame 8 can be moved by the single locking damper 16 between the working position and the non-working position. The provision of both functions of the urging means for setting the stop state and the rotating urging means from the working position to the non-working position can reduce costs and reduce the size of the mechanism.

[Brief description of the drawings]

FIG. 1 is a side view of a hydraulic shovel as a construction machine to which the present invention is applied.

FIG. 2 is a diagram showing a state of a console box at a working position according to the first embodiment of the present invention.

FIG. 3 is a diagram illustrating a state of a console box at the start of rotation from a work position according to the first embodiment.

FIG. 4 is a diagram illustrating a state of the console box during rotation in the first embodiment.

FIG. 5 is a diagram illustrating a state of a console box immediately before a non-working position according to the first embodiment.

FIG. 6 is a diagram illustrating a state of the console box at a non-working position according to the first embodiment.

FIG. 7 is an explanatory diagram for explaining a relationship between a locking damper and an engaging member at a working position and a non-working position in the first embodiment.

FIG. 8 is an explanatory diagram of a second embodiment according to the present invention.

FIG. 9 is a sectional view taken along line MM in FIG. 8;

FIG. 10 is an explanatory diagram of a third embodiment according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hydraulic excavator 2 Undercarriage 3 Upper revolving superstructure 4 Working part 5 Operator's cab 6 Console box 7 Fixed frame 8 Rotating frame 9 Support pin 10 Support pin 11 Engaging member 11a Guide groove 11b Upper horizontal groove (first engaging part) 11c Lower horizontal groove (second engaging portion) 12 Locking projection (locking member) 13 Gate lock lever 14 Support pin 15 Support pin 16 Lock damper 17 Push-pull cable 18 Gate lock valve

Claims (6)

[Claims] 1. A fixed frame which is arranged on a side of a driver's seat of a construction machine and is provided integrally with a vehicle body, and a fixed position of a fixed position between a working position and a non-working position above a predetermined angle from the working position. A rotating frame supported so as to be rotatable up and down in the vertical direction, an engaging member provided rotatably in the up and down direction on the rotating frame, and a locking member provided on the fixed frame. A first member for engaging the engaging member with the locking member when the rotating frame is at the working position to prevent the rotating frame from rotating toward the non-working position; An engagement portion, and a second engagement portion that engages with the locking member when the rotation frame is located at the non-working position and prevents the rotation frame from rotating toward the work position. Are formed, and the first engagement portion is provided between the fixed frame and the engagement member. And the engaging member is engaged with the engaging member in one direction, and the engaging member is engaged with the engaging member in the other direction while the second engaging portion is engaged with the engaging member. In a console box of a construction machine provided with a locking damper to be urged, the locking damper includes a connecting portion between the fixed frame and the locking damper, and the engaging member and the locking damper. When the line connecting the connecting points of the first engagement portion is engaged with the locking member, and when the second engagement portion is engaged with the locking member, It is arranged so that it is located on the opposite side with the rotation center of the engagement member therebetween, and
A console box for a construction machine, wherein a connecting point between the fixing frame and the locking damper is provided below a connecting point between the engaging member and the locking damper. 2. When the rotating frame is in the working position, a position above a line connecting the center of rotation of the engaging member and a connecting point between the fixed frame and the locking damper, 2. The console box for a construction machine according to claim 1, wherein a connection point between the engaging member and the locking damper is provided. 3. A guide groove is formed in the engaging member,
When the rotating frame is rotated, the engaging member is rotated while sandwiching the locking member between the guide grooves, and when the rotating frame is positioned at one of the working position and the non-working position. The locking member is located at one of the first engaging portion and the second engaging portion, and the locking member is provided with a retaining means for the engaging member. 3. A console box for a construction machine according to claim 1. 4. The console box for a construction machine according to claim 1, further comprising a locking means for locking said engaging member when said rotating frame is at least in said working position. . 5. An end of the push-pull cable is fixed to a predetermined portion of the engaging member, and the other end is fixed to a gate lock valve, and the gate lock valve is opened and closed according to rotation of the engaging member. The console box for a construction machine according to any one of claims 1 to 4, wherein: 6. The console box for a construction machine according to claim 1, wherein said locking damper is a gas spring.