JP2000144809A - Operation lever stand for construction machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operation lever stand capable of improving fine operation performance of an operation lever, restraining fatigue of an operator, and enabling the operator to take a pleasant meal or rest in a narrow cabin. SOLUTION: An operation assisting means 20 having a flat surface part 23 on a lower side surface, a wrist rest part 21 on the side of an operation lever 13 on the upper side, and an elbow rest part 22 on the back of it is installed on an upper side corner part on the side of the operation lever 13 in a flat surface part 11 of a lever stand main body 10 through a hinge 24, and on a front surface of the lever stand main body 10, a support means 30 having a stay 31 which can be freely stored to support the operation assisting means 20 rotated for 180 deg./degrees, to be overturned is provided. A cargo suspension operation can thus be performed with a wrist and an elbow supported by the operation assisting means 20, so fine operation performance of the operation lever 13 is enabled to be improved, while fatigue of an operator is restrained, and as a lunch box or a drink can be placed on a table formed by rotation for 180 deg./degrees, a pleasant meal or rest can be taken in a narrow cabin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the technical field of an operation lever stand of a construction machine provided with an operation lever for operating a construction machine, which is disposed near a driving seat of a construction machine such as a wheel crane or a hydraulic shovel. Belong.

[0002]

2. Description of the Related Art Techniques relating to an operating lever stand of a construction machine are disclosed in, for example, Japanese Utility Model Laid-Open No. 7-25052 (operating lever device of a construction machine) and Japanese Utility Model Application Laid-Open No. 6-24046 (a table device for a driver's seat). What is done is known. First, Japanese Utility Model Laid-Open No. 7-25052 according to Conventional Example 1
No. 2, the operating lever device of a construction machine disclosed in
Referring to FIG. 8 of the side view with the same name described in the same specification, a fulcrum 56 supporting a lever stand 53 rising from the cab floor 55 on the side of the driver seat 54 on the floor or the like. The driver seat 54 is mounted so as to be rotatable in the front-rear direction, and a wrist rest 51 which is a wrist holder that is also used as a handle for moving the operation lever 52 and the lever stand 53 is attached to the upper end of the lever stand 53. Of course, although not shown, an armrest which is a rotatable armrest which is an elbow rest during a break is provided in the middle of the backrest of the driver's seat 54. Therefore, the wrist rest 51 improves the fine operability of the operation lever when operating the construction machine, and reduces the fatigue of the operator.

Next, Japanese Utility Model Laid-Open Publication No. 6-2404 according to Conventional Example 2 will be described.
No. 6 discloses a driver seat table apparatus,
Referring to FIG. 9 which is a perspective view of a main part showing a driver seat provided with a table device and its periphery, the same name described in the specification will be used. The table with a detachable fitting member formed as described above is configured to be attached by fitting the fitting member 69 to the front portion of the armrest 63 '. When not in use, the driver's seat 67
The table with the fitting member is stored in a table metal fitting 70 provided on the rear surface of the backrest 64 '. By providing such a table 68 with a fitting member, the operator can write the work status in the work daily report and prepare other documents in the cab. In addition, since a lunch box or a cup or bottle containing drinks can be placed, it is possible to easily eat. Reference numeral 65 denotes an operation lever, and reference numeral 66 denotes an operation lever stand.

[0004]

First, Japanese Utility Model Laid-Open No. 7-25
In Conventional Example 1 disclosed in Japanese Patent Publication No. 052, there is a possibility that the operation lever may interfere with the armrest within the operation range of the operation lever when the lever stand is retracted. There is a problem to be solved in that both cannot perform their respective functions sufficiently because the wrists and elbows are locally compressed.

Further, in the conventional example 2 disclosed in Japanese Utility Model Laid-Open Publication No. 6-24046, the driver's cab is narrow, so that there is a problem to be solved that the table storage fitting for storing the table with the fitting member is in the way. there were. In addition, there is also a configuration that is provided so that it can be stored in the cab, but as described above, since the cab is narrow, only a table with an extremely small area can be provided due to the limitation of storage work space and storage space. Had to be functionally inadequate.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an operation lever stand for a construction machine which suppresses operator fatigue when operating the construction machine and improves the fine operability of the operation lever. In addition, another object of the present invention is to provide an operation lever stand for a construction machine that enables a user to comfortably eat and take a break even in a narrow cab.

[0007]

In order to solve the above-mentioned problem, the means adopted by the operating lever stand of the construction machine according to the first aspect of the present invention is a side position of a driving seat of the construction machine, In an operation lever stand of a construction machine provided with an operation lever for operating the construction machine, the operation assisting means having an arm rest portion, wherein It is provided detachably behind the operation lever.

According to the operating lever stand according to the first aspect of the present invention, when the operation assisting means is mounted on the operating lever stand, an arm rest portion is formed behind the operating lever, and the arm rest portion has an arm from the elbow to the wrist. , So that it can be used even for long-time work. Further, if removed as necessary, the space behind the operation lever becomes wider.

According to a second aspect of the present invention, there is provided an operating lever stand for a construction machine according to the first aspect, wherein one end of the operating lever stand and one of the operation assisting means are provided. A holding means for holding one end in an adjacent state is provided.

According to the operating lever stand of the second aspect of the present invention, the holding means holds one end of the operation assisting means adjacent to one end of the operating lever stand.

According to a third aspect of the present invention, there is provided an operation lever stand for a construction machine according to any one of the first and second aspects, wherein the lever is provided. A flat portion is formed on at least one of the upper portion of the operating lever and the side of the operation assisting means facing the upper portion of the operating lever stand, and the flat portion is held in a state of being exposed upward.

According to the operation lever stand of the third aspect of the present invention, when the operation auxiliary means is removed, at least one of the upper part of the lever stand and the side of the operation auxiliary means opposed to the upper part of the operation lever stand. The formed flat portion is held upward.

According to a fourth aspect of the present invention, there is provided an operation lever stand for a construction machine according to any one of the first to third aspects, wherein the operation lever stand for a construction machine is provided. A support means is provided for holding the operation means adjacent to the operation lever stand, and supporting the operation assist means in a state where the upper end of the operation assist means is substantially flush with the upper end of the operation lever stand.

According to the operation lever stand of the fourth aspect of the present invention, the operation assisting means is supported by the support means so as to be flush with the upper end of the lever stand.

The means employed by the operating lever stand of the construction machine according to the fifth aspect of the present invention is such that it is possible to retreat to a position lateral to the driver's seat of the construction machine and does not hinder the ascent and descent to the cab. An operation lever stand of a construction machine provided with an operation lever for operating the construction machine, comprising: an operation assisting unit having an arm rest formed behind the operation lever; A flat member is provided at one end of the stand so as to be extended and supported, and the flat member can be stored below the arm rest.

According to the operating lever stand of the fifth aspect of the present invention, when used, the flat member is extended from one end of the lever stand, and when not used, the flat member is stored below the arm rest. .

The means employed by the operating lever stand of the construction machine according to claim 6 of the present invention is as set forth in claims 1, 2, 3, and 4.
Or the operating lever stand of the construction machine according to any one of the items 5, wherein at least one of an upper portion of the operating lever stand and a side of the operation assisting means facing the upper portion of the operating lever stand has a cylindrical shape. It is provided with a holder capable of holding a body.

According to the operating lever stand according to the sixth aspect of the present invention, the cylindrical body is mounted on the holder portion provided on at least one of the upper portion of the operating lever stand and the side of the operation auxiliary means facing the upper portion of the operating lever stand. Can be retained.

[0019]

FIG. 1 is a side view of an operation lever stand of a construction machine according to a first embodiment of the present invention. FIG. 2 of a front view seen from the direction of arrow A in FIG. 1 and FIG. 3 of a plan view seen from the direction of arrow B of FIG.
FIG. 4 (a) as viewed in the direction of arrows CC in FIG. 1, and D- in FIG.
This will be described with reference to FIG. The operation lever stands are usually arranged on both sides of the driver's seat. However, only the number of operation levers and the operation target are different, and the main configuration is almost the same. The description of the operation lever stand on the other side is omitted.

Reference numeral 1 shown in FIG. 1 denotes an operation lever stand that can be retreated, and this operation lever stand 1
Is in the cab of a wheel crane (not shown),
The operator's cab is disposed on the floor 2 of the upper revolving superstructure, and is provided on the left side of an operator's seat where an operator who operates a wheel crane and operates a suspended load sits. The operation lever stand 1 is provided on a lever stand body 10 described later, an operation assisting means 20 described later disposed on the upper surface of the lever stand body 10, and provided on a front surface of the lever stand body 10, and includes Means 20
And support means 30 for supporting the above.
In addition, in addition to the driver's seat and the control lever stand, an instrument panel, a driving handle, a speed switch lever, and the like are arranged in the driver's cab. limited.

The lever stand body 10 is shown in FIGS.
As shown in FIG. 2, the support bracket 16 is supported by a support bracket 16 projecting from the floor 2 via a horizontal rotation support shaft 17. The lever stand body 10 has one end pivotally attached thereto and the other end retreatable by the expansion and contraction operation of the rod of the tilting cylinder 15 pivotally attached to the support bracket 16, that is, an upright position shown by a solid line in FIG. It is configured to be tilted rearward from the state shown by the two-dot chain line, and to be able to maintain the standing and tilting state. A control valve 14 is provided on the inside of the front surface of the lever stand body 10 so that the spool is pushed and pulled by the forward and backward operations of an operation lever (two in the first embodiment) 13 movably mounted vertically. Have been. As shown in FIG. 4 (a), the upper surface of the lever stand body 10 has a circular hole for holding the outer peripheral surface of a drink-containing cup which is a cylindrical body and a receiving plate provided on the lever stand body 10. The flat part 11 is provided with a holder part 12 composed of the following. The operation assisting means 20 is disposed on the flat part 11.

An arm rest 20a is formed above the operation assisting means 20. The arm rest 20a is formed on the operation lever 13 side, and the wrist rest 21 has a lower inclination on the operation lever 13 side and becomes higher as the distance from the operation lever 13 increases, and a rear side of the wrist rest 21. An elbow rest 22 is formed continuously with the wrist rest 21. Then, the operation assisting means 20
The lower corner of the wrist holder 21 is connected via a hinge 24 which is a holding means provided on the upper corner of the lever stand body 10 on the side of the operation lever 13 so that it can rotate. Is configured.

More specifically, as shown in FIG. 1, a flat portion 11 of the lever stand body 10 of the operation assisting means 20 is provided.
When it is rotated 180 degrees forward from the position shown by the solid line where the flat portion 23 on the opposite side is fitted to the front side shown by the two-dot chain line and is supported by the support means 30 described later, the lever stand body 10 The upper flat portion 11 and the flat portion 23 of the operation assisting means 20 are configured to be flush. Although the holder 12 in the first embodiment includes a hole and a receiving plate provided on the lever stand body 10, a circular recess having a flat bottom surface that supports the bottom of the cup (in this case, a bottle) The holder 12 may be provided only on the flat portion 11 of the lever stand body 10, but may be provided on the flat portion 23 of the operation assisting means 20. May be.

Engagement holes 26b, 26b are provided near the inside of the outer edge of the flat portion 11 on the upper part of the lever stand body 10. In addition, the engaging claw 26a engaging with the engaging hole 26b, 26b,
26a is provided. The positioning means 26 including the engagement holes 26b and the engagement claws 26a prevents the operation assisting means 20 mounted on the lever stand body 10 from shifting in the lateral direction and rattling. By the way, in the first embodiment, the space above the control valve 14 of the lever stand body 10 is closed by the flat portion 11 so that it can be used as a console box that can accommodate small items. Of course, it is also possible to remove the flat portion 11 and use it as a device disposing portion for disposing a radio or a crane operating device in this space.

The support means 30 is, as shown in FIG.
A stay 31 is provided for supporting the elbow rest 22 of the operation assisting means 20 which has been turned over by 180 degrees. This stay 3
Reference numeral 1 denotes a front surface of the lever stand body 10 on the side of the operation lever 13 and, as shown in FIG. 2, is disposed between the operation levers 13 and has an elongated hole 31a provided thereunder. In addition, a stay supporting shaft 34 supported by a stay supporting bracket 33 protruding from the front surface of the lever stand body 10 and at the center in the width direction is supported therethrough. This stay 31 is shown in FIG.
As shown by a two-dot chain line in FIG. 4, when the upper part is pulled up and inclined so that the top is forward, a square rod-shaped member is provided on the front surface of the lever stand body 10 and below the stay support bracket 33. Stopper 35
The lower end is locked to maintain the inclined state, and the operation assisting means 20 is supported.

The stay 31 of the supporting means 30
Is set to a length that supports the operation assisting means 20 which is inverted so that the plane portion 23 is horizontal. However, it is not always necessary to support the operation assisting means 20 so that the plane portion 23 is horizontal. For example, the length is set to support the operation assisting device 20 in a state where the tip of the plane portion 23 is inclined so as to be slightly higher. May be. Stopper 3
By arranging a plurality of 5 in the vertical direction, it is possible to hold the operation holding means 20 horizontally even when the lever stand body 10 is inclined by changing the locking position of the stay 31.

On the top of the stay 31, a pad 32 made of an elastic resin for receiving the inverted elbow rest 22 of the operation assisting means 20 is fitted. When not in use (in the case of running operation or hanging load operation), as shown by a solid line in FIG.
0 is stored vertically along the front. That is, when the stay 31 is slightly lifted and brought down to a vertical state and then lowered, the pad 32 is pressed against the front surface of the lever stand main body 10 and the lower end side end surface contacts the stopper 35. The reason for storing the stay 31 in this state is to prevent the surface of the operation assisting means 20 from being damaged during use, and at the same time, to prevent the stay 31 from rattling due to vibration generated during operation of a wheel crane or the like. It is a matter of consideration.

On the other hand, as shown by a solid line in FIG.
When it is in the crane operating position in which the operating lever 13 can be operated by being fitted to the flat portion 11, the lever stand body 10 is fixed by a lock device 25 which is a holding means provided near the upper rear inside of the rear portion. It is configured. The lock device 25 is lockable and unlockable, and is fixed to the lock plate fixed to the flat portion 23 of the operation assisting means 20 and to the upper part of the rear inner surface of the lever stand body 10, and the lock plate is inserted. Then, the lock plate has a structure including a suction fitting provided with a magnet for attracting the lock plate. Alternatively, a latch having a known structure may be used.

The mode of operation of the operating lever stand 1 according to the first embodiment will be described below. In the case where the wheel crane is operated for traveling or stopped at a predetermined position, and the outrigger is extended to perform a suspended load operation. As shown by a solid line in FIGS. 1, 2 and 3, the position of the operation assisting means 20 is such that the flat part 23 of the operation assisting means 20 is aligned with the flat part 11 of the lever stand body 10, and the rear side is the locking device 25. By lever stand body 1
9 is fixed. Unlike the conventional example 1, the operation assisting means 20 has no risk of the operation lever 13 interfering when the lever stand is retracted, and has an area sufficient for placing the arm of the operator. By placing the wrist on the wrist rest part 21 and the elbow on the elbow rest part 22, the entire arm can be supported without any pressure on the wrist and the elbow, so that it can be operated even for long hours without damaging the wrist or elbow The fine operability of the lever 13 can be improved, and the operator's fatigue when operating the construction machine can be suppressed.

When the operator takes a break, eats, or the like, he releases the lock and pushes down the lever grip to operate the operation lever 13 from the normal operation position even if the operation assisting means 20 is rotated by 180 degrees. The lever grip provided on the top of the lever 13 is lowered to a position where it does not come into contact with the operation assisting means 20, and the operation assisting means 20
Is rotated forward. Then, the operation assisting means 20
When the elbow rest portion 22 abuts on the upper end of the pad 32 fitted to the top of the stay 31, the flat portion 23 of the operation assisting means 20 becomes horizontal, and supports the outer peripheral surface of a drink-containing cup or bottle. A table having a holder portion 12 for holding the table is formed. The formed table has an area twice as large as the area where the upper arm of the operator can be placed, and has an area enough to place lunches and tableware. Therefore, unlike the conventional example 2, when the table is extended, Even in a narrow cab, you can have a meal or a break by protruding without moving your body.

As described above, according to the operation lever stand 1 of the wheel crane according to the first embodiment,
For example, when carrying out a suspended load operation, as described above, the operation assisting means 20 is fixed on the flat portion 11 of the lever stand body 10 by the lock mechanism 25, and the hinge 2
When the operation lever 13 is pressed down to a height that does not obstruct the operation lever 13 when the operation lever 13 is rotated forward with the rotation fulcrum, the operation assisting means 20 does not interfere with the operation lever 13. Then, the operation assisting means 20
The arm rest 20a has an area enough to allow the operator's upper arm to be placed thereon,
If the plane portion 11 of 0 is made horizontal, the area becomes twice as large.
The function of suppressing the fatigue at the time of operating the load of the wheel crane and improving the fine operability of the operation lever 13 and the function of improving the comfort at the time of eating or resting can be sufficiently performed.

Further, the position where the operation assisting means 20 is stored is on the flat portion 11 of the lever stand main body 10, as is well understood from the above description. Therefore,
"Table device for driving seat of construction machine" according to Conventional Example 2
As described above, there is no need to provide a table storage bracket for storing a table, and a narrow cab can be effectively used. Also, the flat portion 1 of the lever stand body 10
Utilizing a table formed by 1 and the flat portion 23 of the operation assisting means 20, the operator can write the work status in the work daily report and prepare other documents while sitting in the driver's seat. is there.

By the way, in the operation lever stand 1 according to the first embodiment, as described above, the configuration in which the operation assisting means 20 is rotated via the hinge 24 has been described as an example. However, for example, the operation assisting means 20 is made detachable, and an engaging member is attached to the end on the side of the flat portion 23, and the engaging member of the operation assisting means 20, which is inverted on the lever stand body 10, is attached. A locking portion for locking is provided. Then, when the operation assisting means 20 is removed and inverted, and the engaging member is engaged with the engaging portion and locked,
Even if a contact surface that abuts on the front surface of the lever stand body 10 and horizontally holds the flat portion 23 of the operation assisting means 20 is formed at the end of the operation assisting means 20 on the engaging member side, the same function is provided. Can be demonstrated. In this case, it is preferable in terms of convenience that the flat portion 11 of the lever stand body 10 and the flat portion 23 of the operation assisting means 20 be flush with each other, but there are some steps between the flat portions 11 and 23. Even so, the same effect can be expected.

Further, in the operating lever stand 1 according to the first embodiment, the holder is provided on one of the flat part of the operating assisting means 20 or the flat part of the operating assisting means 20 and the flat part of the lever stand body 10. Although the case where a part is provided has been described, even if a holder part is not provided, a cup or a lunch box can be placed at the time of a break or a meal, and a writing operation can be performed. Since the fatigue can be suppressed and the fine operability of the operation lever 13 can be improved, a certain effect can be expected.

In the first embodiment, the lever stand body 10 is a tilt type in which the lever stand body 10 is attached to the floor 2 via a rotation support shaft 17, but a schematic plan view of an operation lever stand including a driver's seat. 5 (a), and FIG. 5 (b), which is a schematic side view of an operation lever stand including a driver's seat, like the operation lever stand according to the second embodiment. Can be slid forward and backward through the slide rails attached to the
In addition, the configuration may be such that it can be locked at an arbitrary stop position, or may be a configuration that is attached to the driver's seat.
Then, the flat member 40 which can be used as a table is placed on the vertical rotation shaft 41 on the front side and the upper side of the lever stand body 10.
, And can be rotated forward when used, and rotated backward when stored to be stored in the lower storage section 10 a of the operation assisting means 20 provided on the lever stand body 10. .

FIG. 6 (a) is a schematic side view of an operation lever stand including a driver seat, FIG. 6 (b) is a schematic plan view of an operation lever stand including a driver seat, and FIG.
As in the operation lever stand according to the third embodiment shown in FIG. 6C in the cross-sectional view taken along the line EE of FIG. 6B, the operation assisting means 20 is rotated forward to protrude, and It is also possible to adopt a configuration in which the flat member 40 stored in the storage section 20b is pushed out like a drawer into the means 20 so as to be drawn out and extended, thereby securing a wider flat area for a large table.

Embodiment 4 shown in FIG. 7A in a schematic plan view of an operation lever stand including a driver's seat and FIG. 7B in a schematic side view of the operation lever stand including a driver's seat. And the operation assisting means 2 above the lever stand body 10 like the operation lever stand according to
0, the flat member 40 may be extended like a drawer so as to be retractable.
It is also possible to adopt a configuration in which a small flat member 40a having a smaller dimension than this is extended like a drawer and can be stored.

That is, these flat members are configured so as to be housed and extended between the lever stand main body, the operation assisting means, or between the lever stand main body and the operation assisting means by the guide groove, the rotating shaft and the like. That is good.

In the operation lever stand 1 according to the first embodiment, the case where the operation assisting means 20 is rotated forward and provided with the operation lever 13 has been described as an example. However, the present invention is not limited to this. A hinge or engagement means may be provided on the side of the lever stand body 10 to hold the operation assisting means 20 on the side of the lever stand body 10. Further, it is also possible to provide a holding means on the side of only the operation assisting means 20 and to attach and hold it at another place in the cab during use. Further, in the operation lever stand 1 according to the first embodiment, the extended operation assisting means 20 is configured to be supported by the stay 31 of the support means 30. However, any structure can be used as long as it can be supported. The structure which is stored in the main body 10 and supported by a foldable bracket which is extended when used may be used.

Further, the case where the technical idea of the present invention is applied to the operation lever stand of the wheel crane has been described above as an example. However, the technical idea of the present invention is not particularly limited to wheel cranes, and can be applied to various types of construction machines such as mechanical cranes. It is not limited.

[0041]

As described above, according to the operating lever stand of the construction machine according to the first aspect of the present invention, when the operation assisting means is mounted on the operating lever stand, an arm rest is formed behind the operating lever. By supporting the arm from the elbow to the wrist, the arm holder can be used even for long-time work. Further, if removed as necessary, the space behind the operation lever becomes wider. Therefore, as compared with Conventional Example 1, fine operability of the operation lever is improved, and operator fatigue is suppressed. Then, when removed, a cup, a lunch box, or the like can be placed on the upper surface of the lever stand body, so that it is possible to eat comfortably and take a break even in a narrow cab. In addition, since the storage position is on the lever stand body and there is no need to provide a table storage bracket, a narrow cab can be effectively used.

According to the operation lever stand of the construction machine according to the second aspect of the present invention, one end of the operation assisting means is held by the holding means adjacent to one end of the operation lever stand, thereby forming a wider table. Therefore, it is possible to contribute to improvement of comfort at the time of eating in a narrow cab or at the time of a break.

According to the operation lever stand of the construction machine according to the third aspect of the present invention, when the operation auxiliary means is removed, the upper part of the lever stand or the side of the operation auxiliary means opposed to the upper part of the operation lever stand is removed. Since the flat portion formed on at least one of the flat portions is held in an upward state, it is possible to place a cup, a lunch box, and the like on this flat portion to eat and take a break.

According to the operation lever stand of the construction machine according to the fourth aspect of the present invention, the operation assisting means is supported by the support means flush with the upper end portion of the lever stand and becomes wider, so that it can be used in a narrow cab. It can contribute to improvement of comfort at the time of a meal or a break.

According to the operation lever stand of the construction machine according to the fifth aspect of the present invention, a cup, a lunch box, and the like can be placed on a flat member protruding from below the arm rest portion in use. Since it is possible to eat comfortably even in a narrow driver's cab and to have the arm rest support the arms, it is possible to take a comfortable break.

According to the operation lever stand of the construction machine according to the sixth aspect of the present invention, if the holder portion holds a cup or a bottle, various beverages can be drunk without fear of contamination in the cab due to dropping of the cup. Therefore, it is possible to further contribute to the improvement of comfort at the time of eating in a narrow cab or at the time of a break.

[Brief description of the drawings]

FIG. 1 is a side view of an operation lever stand of a wheel crane according to Embodiment 1 of the present invention.

FIG. 2 is a front view as viewed from the direction of arrow A in FIG. 1;

FIG. 3 is a plan view seen from the direction of arrow B in FIG. 1;

FIG. 4A is a view taken along line CC of FIG. 1, and FIG. 4B is a view taken along line DD of FIG.

5 (a) is a schematic plan view of an operation lever stand including a driver's seat, and FIG.
(B) is a schematic side view of the operation lever stand including the driver's seat.

6 (a) is a schematic side view of an operation lever stand including a driver's seat, according to Embodiment 3 of the present invention. FIG.
6B is a schematic plan view of the operation lever stand including the driver's seat, and FIG. 6C is a cross-sectional view taken along line EE of FIG. 6B.

7 (a) is a schematic plan view of an operation lever stand including a driver's seat, according to Embodiment 4 of the present invention; FIG.
(B) is a schematic side view of the operation lever stand including the driver's seat.

FIG. 8 is a side view of an operation lever device of a construction machine according to Conventional Example 1.

FIG. 9 is a main part perspective view showing a driver's seat including a table device and its periphery according to Conventional Example 2.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Operation lever stand, 2 ... Floor surface 10 ... Lever stand main body, 10a ... Storage part, 11 ... Flat part, 12 ... Holder part, 13 ... Operation lever, 14 ... Control valve, 15 ... Tilting cylinder, 16 ... Support bracket,
Reference numeral 17: rotation support shaft 20: operation assisting means, 20a: arm holder, 20b: storage unit, 21: wrist holder, 22: elbow holder, 23: flat part, 24: hinge, 25: locking device, 26 ... Positioning means, 26a ... engaging claw, 26b ... engaging hole 30 ... supporting means, 31 ... stay, 31a ... long hole, 32 ...
Pad, 33: stay support bracket, 34: stay support shaft, 35: stopper 40: flat member, 40a: small flat member, 41: vertical rotation shaft

Claims (6)

[Claims] 1. A construction machine comprising: an operation lever for operating the construction machine, which is disposed at a position lateral to a driver's seat of the construction machine and does not obstruct ascending and descending into a cab. An operation lever stand for a construction machine, wherein an operation assisting means having an arm rest is provided detachably behind the operation lever. 2. The operating lever stand for a construction machine according to claim 1, further comprising: holding means for holding one end of the operating lever stand and one end of the operation assisting means adjacent to each other. . 3. A flat portion is formed on at least one of the upper portion of the lever stand and the side of the operation assisting means facing the upper portion of the operating lever stand, and the flat portion is held in a state of being exposed upward. The operating lever stand for a construction machine according to any one of claims 1 and 2, wherein 4. A supporting means for supporting the operation assisting means adjacent to the operation lever stand, and supporting the operation assisting means so that an upper end thereof is substantially flush with an upper end of the operation lever stand. The operating lever stand for a construction machine according to any one of claims 1 and 3, wherein 5. The construction machine according to claim 1, wherein said construction machine is provided with an operation lever for operating said construction machine, wherein said construction machine is provided at a position lateral to a driving seat of said construction machine so as not to obstruct ascending and descending into a cab. The operation lever stand, further comprising: an operation assisting means having an arm rest formed behind the operation lever; and a flat member having a flat portion and extending and supported at one end of the operation lever stand when used. An operation lever stand for a construction machine, wherein the flat member is configured to be retractable below the lower part. 6. A holder portion capable of holding a cylindrical body is provided on at least one of the upper portion of the operation lever stand and the side of the operation assisting means facing the upper portion of the operation lever stand. Terms 1, 2, 3, 4
Or an operation lever stand for a construction machine according to any one of the above items 5.