JP2006077544A - Cabin device of construction machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify a structure for fitting an armlest, an operation lever device, operation lewer device while maintaining the position of the armrest in a constant position against the operation lever device, and electric parts. <P>SOLUTION: A main bracket 17 is fixed to a cab station support base 12, an arm rest 22 is fitted to the rear part and an operational lever device 24 is mounted at the front part through a subbracket 19. Further, the electric parts 27 are attached to the longitudinal intermediate part through the brackets 20, 21 for the electric decoration parts. Hence, the position of the armrest 22 relative to the operational lever device 24 can be kept constant. And, the armrest 22, the operation lever device 24, and electric parts 27 can be attached to the one main bracket 17 and the constitution can be simplified. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a driver's seat device for a construction machine that is provided in a construction machine such as a hydraulic excavator and includes an operation lever, an armrest, and the like on a side of the driver's seat.

  Generally, a construction machine such as a hydraulic excavator includes a self-propelled lower traveling body and an upper revolving body that is turnably mounted on the lower traveling body. A work device for performing excavation work or the like is provided so as to be able to move up and down. A cab on which an operator rides is provided on the turning frame of the upper turning body.

  Here, the cab has a cab box having an outer shape, and a floor board is provided below the cab box. In the cab box, a driver seat on which an operator sits on a floor board via a driver seat support seat is provided, and consoles are provided on the left and right sides of the driver seat. Furthermore, the console is provided with an operation lever for operating the work device or the like at a front portion thereof so as to be tiltable. On the rear side of the operation lever, an operation switch for the air conditioner, a travel mode selection switch for switching the travel mode, Electrical components such as a work mode selection switch for switching the work mode, a radio operation switch, an engine start switch, a liquid crystal panel, and a lamp are arranged.

  In addition, the driver's seat support base includes a seating position adjusting mechanism that adjusts the seating position forward, backward, upward, and downward according to the operator's physique and preference, and a suspension mechanism that makes the driver's seat comfortable. Is provided.

  On the other hand, on the side of the driver's seat, an armrest on which the arm is placed is provided for the purpose of stabilizing the arm when operating the operation lever and reducing the fatigue of the operator. The armrest is attached to the back of the driver's seat so as to extend forward, for example.

  Other hydraulic excavators include those provided with an armrest on a console provided with an operation lever or the like. In this case, a bracket for attaching the armrest to the console is provided separately, and the armrest is attached to the console via the bracket (see, for example, Patent Document 1 and Patent Document 2).

Japanese Patent Laid-Open No. 10-331199 Japanese Utility Model Publication No. 6-35356

  By the way, in the above-described prior art, in which the armrest is provided on the backrest of the driver's seat, when the driver's seat is displaced by the seating position adjusting mechanism and the suspension mechanism, the armrest is moved forward and backward together with the driver's seat. Displaces upward and downward. For this reason, since the position of the armrest is not fixed with respect to the operation lever, there is a problem that the arm cannot be stabilized at an appropriate place and the operability is lowered.

  On the other hand, as in Patent Document 1 and Patent Document 2, when an armrest is provided on the console, a bracket for attaching the armrest to the console must be added separately, so the number of parts increases and the structure is complicated. In addition, there is a problem that the space around the driver's seat becomes narrow.

  The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to provide a space around the driver's seat by simplifying the mounting structure of the armrest while keeping the position of the armrest with respect to the operation lever device constant. It is an object to provide a driver's seat device for a construction machine that can secure the above.

  Another object of the present invention is to provide a driver's seat device for a construction machine that can support an armrest, an operating lever device, and an electrical component with a single bracket.

  Furthermore, another object of the present invention is to provide a driver's seat device for a construction machine that can adjust the position of the armrest and the operating lever device relative to the driver's seat in a state where the positional relationship between the armrest and the operation lever device is kept constant. It is in.

  According to a first aspect of the present invention, there is provided a driver's seat device for a construction machine, a driver's seat support provided on a frame constituting the vehicle body, and a driver seated on the driver's seat support so as to be movable forward and backward. A driver's seat, a main bracket located on the side of the driver's seat and extending forward and rearward to the driver's seat support base, and a sub-bracket for an operation lever provided at the front of the main bracket An electrical component sub-bracket provided at an intermediate portion in the length direction of the main bracket, an armrest attached to a rear portion of the main bracket, and an operation lever device attached to the operation lever sub-bracket; The electric component parts are attached to the electric component sub bracket and include various switches.

  According to a second aspect of the present invention, the armrest is configured to be attached to the main bracket so as to be rotatable upward and downward.

  According to a third aspect of the present invention, the operation lever sub bracket and the electrical component sub bracket are fixed to the main bracket using welding means.

  According to a fourth aspect of the invention, the main bracket is configured to be provided such that a height position thereof is adjustable with respect to the driver seat support base.

  According to the first aspect of the present invention, the main bracket is attached to the driver's seat support base, the armrest is attached to the rear portion of the main bracket, the operation lever device is attached to the front portion via the operation lever sub bracket, The electric component is attached to the middle portion in the length direction via the electric component sub bracket.

  Therefore, since the armrest can hold the position with respect to the operation lever device constant, the arm can be stabilized at an appropriate position with respect to the operation lever, and the operability can be improved. Moreover, the load when the arm is placed on the armrest and the operation force when the operation lever device is operated can be efficiently released to the driver seat support base side only through the main bracket. In addition, the armrest and the operation lever device can be adjusted together with respect to the driver's seat in a state where the positional relationship with the operation lever device is kept constant.

  On the other hand, since the control bracket sub bracket and electrical component sub bracket are attached to the main bracket, the armrest, control lever device, and electrical components can be attached to one main bracket, simplifying the configuration and improving productivity. Thus, it is possible to reduce the manufacturing cost. In addition, by simplifying the configuration of each bracket, a space can be secured around the driver's seat, so that this space can be effectively used as an installation space for other parts.

  Furthermore, among the main bracket, operation lever sub bracket, and electrical component sub bracket, only the main bracket needs to be formed as a strength member. Therefore, the operation lever sub bracket and electrical component sub bracket should be provided easily and inexpensively. Can do.

  According to the invention of claim 2, since the armrest can be rotated upward and downward, the angle of the armrest can be adjusted according to the physique and preference of the operator, and the operability of the operation lever device is improved. can do.

  According to the invention of claim 3, the operation bracket sub bracket and the electrical component sub bracket can be easily attached to the main bracket using the welding means. In addition, since a large load does not act on each sub bracket, the welding strength can be set low, and the assembly workability can be improved.

  According to the invention of claim 4, even when the position of the driver's seat is adjusted upward or downward by adjusting the height position of the main bracket with respect to the driver's seat support base, it is in accordance with the physique and preference of the operator. Thus, the position of the armrest with respect to the operation lever device can be adjusted, and the operability of the operation lever device can be improved.

  Hereinafter, a case where the driver's seat device for a construction machine according to an embodiment of the present invention is applied to a hydraulic excavator provided with a cab will be described as an example, and will be described in detail with reference to FIGS.

  In FIG. 1, reference numeral 1 denotes a cab specification hydraulic excavator as a specific example of a construction machine applied to the present embodiment. The hydraulic excavator 1 includes a self-propelled lower traveling body 2, an upper revolving body 3 that is pivotably mounted on the lower traveling body 2, and forms a vehicle body together with the lower traveling body 2, and the upper revolving body 3. And the working device 4 provided so as to be able to move up and down on the front side.

  The upper revolving unit 3 includes a revolving frame 5 as a base, a building cover 6 that covers an engine, a control valve, a tank (none of which are shown) mounted on the revolving frame 5, and the revolving frame 5. It is roughly constituted by a cab 7 disposed in the left front part. As shown in FIG. 2, the cab 7 is formed in a box shape by covering the lower side of the cab box 8 with a floor plate 9, and a driver seat device 11 described later is provided on the floor plate 9. .

  Next, reference numeral 11 denotes a driver's seat device of the excavator 1 provided in the cab 7, and the driver's seat device 11 is configured by collecting an operation system for operating the hydraulic excavator 1 around the operator. The driver's seat device 11 is roughly constituted by a driver's seat support base 12, a driver's seat 13, a support base side bracket 14, a travel lever / pedal 15, a console 16, and the like which will be described later.

  Reference numeral 12 denotes a driver seat support provided at substantially the center of the floor plate 9 constituting the cab 7, and the driver seat support 12 constitutes a pedestal that supports a driver seat 13 to be described later. That is, as shown in FIG. 3, the driver's seat support base 12 has two bases having a C-shaped cross section or a rectangular tube shape, extending in the left and right directions, and being fixed on the floor plate 9 spaced apart from the front and rear. Frames 12A and 12B, and a first position adjustment mechanism 12C provided on each of the base frames 12A and 12B, for adjusting the position of a driver's seat 13, an armrest 22, an operation lever device 24 and the like, which will be described later, in the front and rear directions; A moving pedestal 12D provided on the position adjusting mechanism 12C, and a second position adjusting mechanism 12E provided on the moving pedestal 12D for adjusting the position of only the driver's seat 13 in the forward, backward, upward and downward directions. It is roughly constituted by. Further, the second position adjusting mechanism 12E is provided with a suspension mechanism (not shown) for improving the comfort of the driver's seat 13, for example.

  Then, as shown in FIG. 4, for example, the first position adjustment mechanism 12C moves the driver seat 13, the armrest 22, and the operation lever device 24 together to the front side by moving the movable base 12D to the front side. The distance to the traveling lever / pedal 15 can be reduced. On the other hand, the first position adjusting mechanism 12C can move the driver seat 13, the armrest 22, and the operation lever device 24 to the rear side together with the moving base 12D, and can increase the distance to the traveling lever / pedal 15.

  Further, the second position adjustment mechanism 12E moves, for example, as shown in FIG. 5 by moving only the driver's seat 13 to the rear side, so that the distance of the driver's seat 13 (backrest 13B) to the lever portion 24B of the operation lever device 24 is increased. Can be widened. On the other hand, the second position adjusting mechanism 12E can move the driver's seat 13 to the front side to narrow the distance of the driver's seat 13 (backrest 13B) with respect to the lever portion 24B of the operation lever device 24. Note that the driver's seat 13 and the console 16 (the armrest 22 and the operating lever device 24) indicated by a two-dot chain line in FIGS. 4 and 5 indicate positions before the position adjustment.

  A driver's seat 13 is provided on the driver's seat support base 12, and the driver's seat 13 is seated by an operator, and includes a seat 13A and a backrest 13B provided at the rear of the seat 13A. The driver's seat 13 can be adjusted in the forward, rearward, upward, and downward directions by the first position adjusting mechanism 12C and the second position adjusting mechanism 12E of the driver seat support base 12, and the seating comfort can be achieved by the suspension mechanism. Is also getting better.

  Reference numeral 14 denotes support base side brackets provided on both the left and right sides, which are located closer to the front side of the moving base 12D constituting the driver seat support base 12. These support base side brackets 14 support a console 16 which will be described later on both the left and right sides of the driver's seat 13, and are integrated with the moving base 12D of the driver's seat support base 12 using, for example, welding means. It is fixed to.

  As shown in FIGS. 7 and 8, the support base side bracket 14 is provided with a side plate 14A extending upward and downward, and a left side and a right side at the front end portion and the rear end portion of the side plate 14A, respectively. The front and rear support plates 14B (only the front side are shown) are provided to be bent inward in the direction. Further, the side plate 14A has a bolt insertion groove 14C extending upward and downward, and a plurality of bolt insertion holes 14D and 14E arranged at substantially equal intervals in the upper and lower directions so as to sandwich the bolt insertion groove 14C. And are provided.

  Reference numeral 15 denotes a traveling lever / pedal (see FIG. 2) provided in front of the driver's seat 13 and provided on the floor plate 9 of the cab 7. The traveling lever / pedal 15 is operated by an operator to travel under the vehicle. The body 2 is made to travel.

  Reference numeral 16 denotes consoles disposed on both the left and right sides of the driver's seat 13, and each console 16 includes an operation lever device 24 described later for operating the work device 4. Specifically, each console 16 is roughly configured by a main bracket 17, an operation lever sub bracket 19, an electrical component sub bracket 20, 21, an armrest 22, an operation lever device 24, an electrical component 27, and the like, which will be described later.

  Reference numeral 17 denotes a main bracket (see FIG. 6) which is located on the left and right sides of the driver's seat 13 and is attached to the support base side bracket 14 on the driver's seat support base 12 side. The main bracket 17 supports an armrest 22, an operation lever device 24, and an electrical component 27 which will be described later. Further, since the main bracket 17 supports the armrest 22 on which the arm is placed, the main bracket 17 is formed as a strength member that can withstand a load acting on the armrest 22.

  Further, the main bracket 17 is formed as a single plate that extends forward and rearward from the side of the driver's seat 13. Further, as shown in FIGS. 9 and 10, the main bracket 17 is bent in a crank shape on the driver's seat 13 side in the middle of the front and rear directions, and the front side faces downward from the bent portion 17A. The lever bracket mounting portion 17B is bent in an L shape. The rear portion of the main bracket 17 is an armrest mounting portion 17C that is bent upward in an L shape.

  In addition, for example, three welding nuts 17D are fixed to the lever bracket mounting portion 17B at positions where they can communicate with the bolt insertion grooves 14C and the bolt insertion holes 14D, 14E of the support base side bracket 14. On the other hand, the rear armrest mounting portion 17C is provided with two mounting holes 17E for mounting the armrest 22 (the rotation connecting member 23).

  The main bracket 17 abuts the lever bracket mounting portion 17B to the side plate 14A of the support base side bracket 14, and the corresponding nuts for the three bolts 18 inserted into the bolt insertion grooves 14C and the bolt insertion holes 14D and 14E. By screwing to 17D, it can be attached to the support base side bracket 14 integrally. At this time, by appropriately selecting the bolt insertion holes 14D and 14E through which the bolt 18 is inserted, the mounting height position of the main bracket 17 relative to the driver seat support base 12 can be adjusted in a plurality of stages. Thereby, the height of the armrest 22 and the lever portion 24B of the operation lever device 24, which will be described later, can be adjusted to an optimum position according to the physique and preference of the operator sitting on the driver's seat 13.

  Reference numeral 19 denotes an operating lever sub-bracket attached to the lever bracket mounting portion 17B of the main bracket 17. The operating lever sub-bracket 19 is formed by bending a strip-shaped plate material into a substantially inverted J shape. . Further, the upper surface portion 19A of the sub bracket 19 is provided with a deformed opening 19B from which a lever portion 24B of an operation lever device 24, which will be described later, protrudes, and a pilot valve 24A of the operation lever device 24 is fixed around the deformed opening 19B. For example, bolt insertion holes 19C are formed at four locations. The operation lever sub-bracket 19 only needs to be able to withstand the operation force when operating the lever portion 24B of the operation lever device 24. Therefore, the operation lever sub bracket 19 can be formed from a thin plate that is inexpensive and easy to process. It can be easily fixed by simply applying welding means.

  Reference numerals 20 and 21 denote two sub-brackets for electrical parts which are provided in the middle portion of the main bracket 17 in the longitudinal direction so as to be separated from each other, and each of the sub brackets 20 and 21 is made of, for example, a rectangular plate material. It is formed by bending it into an L shape. Further, for example, two screw holes 20B and 21B for fixing electrical components to be described later are formed in the upper surface portions 20A and 21A of the sub brackets 20 and 21, respectively. Since the electrical component sub-brackets 20 and 21 only have the electrical component 27 attached, the electrical component sub-brackets 20 and 21 can be formed from a thin plate that is inexpensive and easy to process. 17 can be easily fixed.

  Reference numeral 22 denotes an armrest that is attached to the rear portion of the main bracket 17 so as to extend forward and rearward. The armrest 22 is used to place an arm of an operator who operates the lever portion 24B of the operation lever device 24, and stabilizes the arm. This makes it possible to perform accurate lever operation with an easy posture. Further, as shown in FIGS. 9 and 10, at the rear part of the armrest 22, there is provided a rotation connecting member 23 that supports the armrest 22 so that the armrest 22 can be rotated upward and downward (arrow A and B directions). The armrest 22 is attached to the attachment hole 17E of the armrest attachment portion 17C of the main bracket 17 by the rotation connecting member 23.

  Here, since the armrest 22 is attached to the rear portion of the main bracket 17 via the rotation connecting member 23, the front side is directed upward and downward (arrows A and B directions) with the rotation connecting member 23 as a fulcrum. The armrest 22 can be rotated, and the angle of the armrest 22 can be adjusted according to the physique and preference of the operator. The armrest 22 can be moved to the back 13B side (in the direction of arrow A) of the driver's seat 13 when it is not necessary. It can be saved by pivoting greatly.

  Reference numeral 24 denotes an operation lever device attached to the operation lever sub bracket 19, and the operation lever device 24 operates the work device 4 and the like. The operation lever device 24 is roughly composed of a pressure reducing valve type pilot valve 24A attached to the upper surface portion 19A of the operation lever sub bracket 19 and a lever portion 24B extending upward from the pilot valve 24A through the deformed opening 19B. It is configured. The pilot valve 24A is connected to a control valve (not shown) through a pilot hose group 25.

  Then, the operating lever device 24 passes a bolt 26 through a bolt insertion hole 19C provided in the upper surface portion 19A of the sub bracket 19, and the bolt 26 is screwed to the pressure reducing valve type pilot valve 24A. Attached to the bracket 19.

  Reference numeral 27 denotes an electrical component attached to the electrical component sub brackets 20 and 21. The electrical component 27 includes an air conditioner operation switch, a travel mode selection switch for switching the travel mode, a work mode selection switch for switching the work mode, a radio operation switch, an engine start switch, and the operation status of each switch. There are display devices such as liquid crystal panels and lamps, and the electrical component 27 is unitized by combining some of these switches. The electrical component 27 is attached to the electrical component sub brackets 20 and 21 by screwing bolts 28 into the screw holes 20B and 21B provided in the upper surface portions 20A and 21A of the electrical component sub brackets 20 and 21, respectively. It has been.

  Reference numeral 29 denotes a console cover provided so as to cover the main bracket 17, the operating bracket sub bracket 19, the electrical component sub brackets 20 and 21, the pressure reducing valve type pilot valve 24A of the operating lever device 24, the electrical component 27, and the like. (See FIG. 3).

  The hydraulic excavator 1 according to the present embodiment has the above-described configuration. Next, the operation thereof will be described.

  An operator who gets into the cab 7 and sits on the driver's seat 13 can drive the lower traveling body 2 by operating the traveling lever / pedal 15. Further, by tilting the lever portion 24B of the operation lever device 24 provided on the left and right consoles 16, the work device 4 can be moved up and down to perform soil excavation work or the like.

  Here, when the lever portion 24B of the operating lever device 24 is tilted, the arm can be placed on the armrest 22 to stabilize the arm and perform an accurate lever operation in an easy posture. Further, the load when the arm is placed on the armrest 22 and the operation force when the lever portion 24B of the operation lever device 24 is tilted are operated via the main bracket 17 formed as a strength member on the driver seat support base 12 side. Can be missed.

  Next, an operation for adjusting the positions of the driver's seat 13, the armrest 22, and the operation lever device 24 in accordance with the operator's physique, preference, work content, and the like will be described.

  First, in order to adjust the position of the driver's seat 13 with respect to the travel lever / pedal 15, for example, the operator moves the driver's seat 13, the armrest 22 and the operation lever device 24 forward by the first position adjusting mechanism 12C of the driver's seat support base 12. , The position is adjusted in the rear direction (FIG. 4 shows the case where it moves to the front side). Next, in order to adjust the position of the armrest 22 and the lever portion 24B of the operating lever device 24 for the operator seated on the driver's seat 13, only the driver's seat 13 is moved forward by the second position adjusting mechanism 12E of the driver's seat support base 12. , The position is adjusted in the rear direction (FIG. 5 shows the case of moving to the rear side). Further, when the angle of the armrest 22 with respect to the lever portion 24B of the operation lever device 24 does not match, the angle of the armrest 22 can be adjusted in the directions indicated by arrows A and B with the rotation connecting member 23 as a fulcrum.

  Further, when adjusting the height position of the lever portion 24B of the operation lever device 24 and the armrest 22, the mounting position of the main bracket 17 with respect to the support base side bracket 14 on the driver seat support base 12 side is adjusted upward and downward. By doing so, the lever portion 24B of the operation lever device 24 and the armrest 22 can be moved together to a desired height position.

  Thus, according to the present embodiment, the main bracket 17 is attached to the driver seat support base 12, the armrest 22 is attached to the rear portion of the main bracket 17, and the operation lever is operated via the operation lever sub bracket 19. The lever device 24 is attached, and the electric component 27 is attached to the middle portion in the length direction via the electric component sub brackets 20 and 21. Therefore, since the armrest 22 and the operation lever device 24 are provided in one main bracket 17, the position of the armrest 22 with respect to the operation lever device 24 can be kept constant.

  As a result, the operator can stabilize the arm in an appropriate position with respect to the lever portion 24B of the operation lever device 24, so that the operability of the lever portion 24B can be improved and the work can be performed in an easy posture. Workability can be improved. Moreover, the load when the arm is placed on the armrest 22 and the operation force when the lever portion 24B of the operation lever device 24 is operated can be efficiently released to the driver seat support 12 side only through the main bracket 17. . Moreover, since the armrest 22 can hold | maintain the positional relationship with the operation lever apparatus 24 uniformly, the armrest 22 and the operation lever apparatus 24 can be position-adjusted with respect to the driver's seat 13 together.

  Further, since the operation bracket sub bracket 19 and the electrical component sub brackets 20 and 21 are attached to the main bracket 17, the armrest 22, the operation lever device 24, and the electrical component 27 can be attached to one main bracket 17. As a result, the number of parts can be reduced, and the configuration can be simplified to improve productivity, reduce manufacturing costs, and the like. Moreover, since the space around the driver's seat 13 can be secured by simplifying the configuration of the brackets 19, 20, and 21, this space can be effectively used as an installation space for other components.

  On the other hand, of the main bracket 17, the operation lever sub bracket 19, and the electrical component sub brackets 20 and 21, only the main bracket 17 to which a load from the armrest 22 acts is formed as a strength member. As a result, the operating lever sub bracket 19 and the electrical component sub brackets 20 and 21 can be formed from thin plates that are inexpensive and easy to process, and are easily fixed by simply applying welding means at several locations. be able to.

  Further, since the armrest 22 can be rotated upward and downward (in the directions indicated by arrows A and B) by the rotation connecting member 23, the angle of the armrest 22 can be determined according to the physique and preference of the operator sitting on the driver's seat 13. And the operability when operating the lever portion 24B of the operating lever device 24 can be improved.

  The operation lever sub bracket 19 and the electrical component sub brackets 20 and 21 can be easily attached to the main bracket 17 using welding means. In addition, since a large load does not act on each of the sub brackets 19, 20, and 21, the welding strength can be set low, and the assembling workability can be improved.

  Further, the main bracket 17 is attached to the support base side bracket 14 on the driver seat support base 12 side so that the height can be adjusted. Therefore, the main bracket 17 can adjust the position of the armrest 22 relative to the lever portion 24B of the operation lever device 24 according to the physique and preference of the operator even when the position of the driver's seat 13 is adjusted upward or downward. The operability of the lever portion 24B can be improved.

  In the embodiment, the case where the operation lever sub bracket 19 and the electrical component sub brackets 20 and 21 are fixed to the main bracket 17 using welding means has been described as an example. However, the present invention is not limited to this. For example, the sub brackets 19, 20, and 21 may be fixed to the main bracket 17 using screw members, rivets, or the like.

  Further, in the embodiment, the case where the driver's seat device 11 of the construction machine is provided in the cab specification hydraulic excavator 1 has been described as an example. However, the present invention is not limited to this, and may be applied to, for example, a canopy-type hydraulic excavator. Moreover, it can apply widely also to other construction machines, such as a hydraulic crane, a wheel loader, and a tractor.

1 is a front view showing a cab specification hydraulic excavator to which a driver's seat device according to an embodiment of the present invention is applied. It is sectional drawing which expands and shows a cab from the arrow II-II direction in FIG. It is an external appearance perspective view which expands and shows the driver's seat apparatus in FIG. It is a front view which shows a driver's seat apparatus in the state which adjusted the position of the driver's seat and the console to the front side. It is a front view which shows the driver's seat apparatus of the state which adjusted the position of only the driver's seat in FIG. 4 to the rear side. It is an external appearance perspective view which expands and shows a driver's seat apparatus in the state which removed the console cover. It is an external appearance perspective view expanded and shown in the state which assembled the support stand side bracket and the console. It is a disassembled perspective view which expands and shows the support stand side bracket, the main bracket which comprises a console, an operation lever apparatus, and an electrical equipment part in the disassembled state. It is a disassembled perspective view which expands and shows a main bracket, an armrest, a sub bracket for an operating lever, and a sub bracket for electrical component parts in an exploded state. It is the external appearance perspective view which looked at the main bracket with which the armrest was attached from the driver's seat side.

Explanation of symbols

1 Excavator (construction machine)
2 Lower traveling body (car body)
3 Upper swing body (car body)
DESCRIPTION OF SYMBOLS 5 Turning frame 7 Cab 9 Floor board 11 Driver's seat apparatus 12 Driver's seat support base 12A, 12B Base frame 12C 1st position adjustment mechanism 12D Moving base 12E 2nd position adjustment mechanism 13 Driver's seat 14 Support stand side bracket 15 Traveling lever Pedal 16 Console 17 Main bracket 19 Sub-bracket for operation lever 20, 21 Sub-bracket for electric parts 22 Armrest 23 Rotating connecting member 24 Operation lever device 27 Electric parts

Claims (4)

  A driver's seat support provided on a frame constituting the vehicle body, a driver's seat movably provided in the front and rear directions on the driver's seat support, a seat on which an operator sits, and a side of the driver's seat. A main bracket attached to the driver's seat support base so as to extend in the front and rear directions, a sub bracket for an operating lever provided at a front portion of the main bracket, and an intermediate portion in the length direction of the main bracket. An electrical component sub-bracket, an armrest attached to a rear portion of the main bracket, an operation lever device attached to the operation lever sub-bracket, and an electrical component including various switches attached to the electrical component sub-bracket A construction machine driver's seat device comprising parts.   2. The driver's seat device for a construction machine according to claim 1, wherein the armrest is configured to be pivotable upward and downward with respect to the main bracket.   The construction machine driver's seat device according to claim 1 or 2, wherein the operation lever sub bracket and the electrical component sub bracket are fixed to the main bracket using welding means.   4. The driver's seat device for a construction machine according to claim 1, wherein the main bracket is configured to be adjustable with respect to the driver's seat support base.

Images