JP2006028953A - Manual operating device of working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manual operating device of a working machine, which has good operability, and which enables even a beginner to easily and stably perform long-time work. <P>SOLUTION: An arm part supporting body 15 on one side, which integrally supports a region from the elbow of an operator's arm region one side to the leading end thereof, is provided on a console box 14 on one side of the operator's seat 11 in a such a manner as to be longitudinally movable and rotatable inward and outward. A grip 19, which is grasped by the operator, is rotatably provided ahead of the supporting body 15 via at least one joint part. The manual operating device is provided with a boom operating part for performing the operation of rotating a boom 6 of a front working device 5 in a boom lowering/hoisting direction by moving the supporting body 15 forward/backward, a stick operating part for performing the operation of rotating a stick 7 in a stick-in/out direction by rotating the supporting body 15 inward/outward, and a bucket operating part for performing the operation of rotating a bucket 8 in a bucket-in/out direction by rotating the grip 19 inward/outward. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an operating device installed along a driver's seat of a work machine.

  Conventional hydraulic excavator operation devices are arranged on the left and right sides of the driver's seat and can be rotated and tilted in the front / rear / left / right direction to operate the boom, stick, bucket, and upper revolving body respectively. The left and right crawlers of the lower traveling body are respectively operated by turning and tilting a pair of traveling pedal levers arranged on the left and right.

  Taking the JIS pattern as an example, lowering / raising the boom by tilting the front / rear of the right lever, in / out of the bucket by tilting the left / right, out / in of the stick by tilting the front / rear of the left lever・ When the unit is tilted to the right, the upper revolving unit turns left and right. Therefore, the movement of the front working device is operated by combining the inclination of the right lever in the front-rear and left-right directions and the inclination of the left lever in the front-rear direction, which is difficult for beginners to operate.

  The excavator's cab has a door on the left side, and it enters and exits, but it is necessary to install all the levers within the reach of the driver's seat. There is a problem that it is difficult to enter and exit.

  Thus, various inventions that solve these problems have been proposed (see, for example, Patent Document 1, Patent Document 2, Patent Document 3, Patent Document 4, and Patent Document 5).

  Each invention in Patent Documents 1 to 3 is an operating device that is to be operated by a mechanism that simulates each function of the front working device, but this operating device needs to move the simulated mechanism using the entire arm. In other words, the arm will move repeatedly in the air throughout the work, and it cannot withstand long work.

  In the invention of Patent Document 4, each operation is performed by a switch. However, it is impossible to perform a delicate movement of the front work device with the switch, and further operation is not possible when the switch is operated while operating the operation rod. Become stable.

  In other words, to operate the switch, the wrist or palm must be fixed, but the operation rod of the other party to be fixed has a high degree of freedom to move in the front / back / left / right and its combined direction. Therefore, both switch operation and operation 杆 operation become unstable.

Similarly to the inventions of Patent Documents 1 to 3, the invention of Patent Document 5 cannot fix the arm and cannot withstand long-time work.
JP-A-5-311693 (second page, FIG. 1) Japanese Utility Model Publication No. 6-30254 (first page, FIG. 1) JP 2000-64361 A (page 4-5, FIG. 5) JP 2001-65000 A (page 3-4, FIG. 2) Japanese Patent Laying-Open No. 2003-27527 (page 3-5, FIG. 1)

  Thus, in the conventional left and right lever operations, the movement of the front working device is controlled by the left and right lever operations, which is difficult for beginners to operate. In addition, the distance between the operation lever and the travel lever is narrow, and it is difficult to enter and exit.

  Also, the operating device that simulates the movement of the front cannot fix the arm and cannot withstand long-time work.

  Furthermore, it is difficult to operate the switch while operating the lever when the switch installed on the lever having a large degree of freedom is operated.

  The present invention has been made in view of the above points, and an object thereof is to provide an operating device for a work machine with good operability that allows a beginner to easily and stably perform long-time work. Is.

  According to the first aspect of the present invention, a boom of a working device having a boom, a stick, and a bucket is provided so as to be rotatable in the boom lowering / raising direction with respect to the fuselage, and the stick is stick-in / out with respect to the tip of the boom. An operating device that is arranged along a driver's seat of a work machine that is provided so as to be rotatable in a direction and a bucket is provided so as to be rotatable in a bucket-in / out direction with respect to a tip end of the stick. One side base member disposed on one side, and one arm part of the operator provided on the one side base member so as to be movable in the front-rear direction and rotatable inward and outward as viewed from the operator of the driver's seat One arm support that integrally supports the part from the elbow of the arm, and a grip that is rotatably provided via at least one joint in front of the arm support and is gripped by the operator Along with this arm support, the arm on one side of the operator who grips the grip while being supported by the arm support is moved forward and backward to move the arm support forward and backward. Move and rotate the boom of the work equipment in the direction of lowering and raising the boom, and move the arm on one side of the operator inward and outward with the elbow as a fulcrum to move the arm support in and out The stick operation unit that rotates together with the arm support by rotating in the direction to rotate the stick of the work device in the stick-in / out direction, and the wrist of the arm on one side of the operator that holds the grip And a bucket operation unit that rotates the grip inward and outward by moving the grip inward and outward to rotate the grip of the work device in the bucket in / out direction. A boom operation unit, a stick operation unit, and a boom operation unit provided on one side by moving an arm support or grip on one side on a base member located on one side of a driver's seat; By operating the bucket operation unit, each operation of the work device is operated by only one arm part, so it is easy for beginners to operate, and the arm part supports and supports the arm part of the operator by the arm support body and grip. It can withstand long-term work, and when the arm is moved forward and backward, the boom operation part moves via the arm support and the boom is lowered and raised. When the arm is moved inward and outward with the elbow as a fulcrum, the stick operation part rotates via the arm support, and the stick is rotated in the stick-in / out direction. Move it outwards through the grip Then, since the bucket operation part is rotated and the bucket is rotated in the bucket in / out direction, each operation of the work device can be easily and stably performed by the arm part on one side, and the operability is good.

  According to a second aspect of the present invention, the work machine according to the first aspect is configured such that the upper swing body can swing in the right turn and left turn directions with respect to the lower traveling body that drives the left and right crawler belts in the forward and backward directions, respectively. An operating device that is provided along the driver's seat of the work machine and that has an arm portion on one side by twisting a wrist of an arm on one side of the operator in a right-handed or left-handed direction. With a swing operation part that is twisted together with this grip by twisting the grip in the right / left direction with respect to the support and swinging the upper revolving body in the right / left turning direction with respect to the lower traveling body Then, the wrist support or grip on one side is moved to twist the wrist to the right on the one side arm that operates the boom operation unit, stick operation unit, and bucket operation unit provided on one side.・ When twisted in the left twist direction Since the swing operation part is twisted via the lip and the upper swinging body is swung in the right and left turning directions, the swing operation of the upper swinging body is operated with only one arm part together with each operation of the work device. It is easy to operate even for beginners, and each operation of the working device and the upper swing body can be easily and stably performed with one arm portion, and the operability is good.

  According to a third aspect of the present invention, in the operating device for a work machine according to the second aspect, the base member on the other side disposed on the other side of the driver's seat, and the operator at the driver's seat on the base member on the other side. An arm platform that is installed in the front-rear direction and places the arm on the other side of the operator, and two levers that are arranged side by side on the tip of the arm platform so that they can rotate forward and backward. And a traveling operation unit for operating the left and right crawlers of the lower traveling body in the forward and backward directions by rotating these levers forward and backward by the fingertip of the operator, and An arm platform for placing the arm on the other side of the operator is installed on the base member on the other side located on the other side of the driver's seat, and the left and right crawler belts are operated to travel on the tip of the arm platform. Since a traveling operation unit with two levers was installed, There is no need to install a travel lever in front of the driver's seat, there is no problem that the distance between the operation lever and the travel lever is narrow, and it is difficult to get in and out, and the fingertip is fixed with the wrist fixed on the arm platform. Therefore, even a beginner can easily and stably work for a long time, and the operability is good.

  According to a fourth aspect of the present invention, in the work machine according to the first aspect, the upper swing body can swing in the right turn and left turn directions with respect to the lower traveling body that drives the left and right crawler belts in the forward and backward directions, respectively. An operating device that is provided along the driver's seat of the work machine and has a base member on the other side disposed on the other side of the driver's seat, and a base member on the other side. The other side arm support and the other side arm support that integrally supports the elbow of the arm on the other side of the operator that can be turned inward and outward as seen from the operator at the driver's seat An arm platform that is integrally installed in front of the body and places the arm on the other side of the operator and an arm support on the other side by moving the arm on the other side of the operator inward and outward with the elbow as a fulcrum By rotating inward and outward with the arm support, Swing operation part that swings the part revolving body in the right and left turning directions, and two levers that are arranged side by side on the tip of the arm unit so that they can rotate forward and backward, respectively. And a driving operation section for operating the left and right crawlers of the lower traveling body in the forward and backward directions by rotating these levers forward and backward by the fingertips of the operator, and the driver's seat On the other side base member positioned on the other side, an arm support on the other side that integrally supports the tip from the elbow of the arm on the other side of the operator is provided so as to be rotatable inward and outward. Move the other arm part inward and outward with the elbow as a fulcrum and turn the other arm supporter inward and outward to turn it up with the swing operation part that rotates with this arm supporter Swing the swinging body in the right or left direction In both cases, an arm platform for placing the other arm of the operator on the front side of the other arm support is integrally installed, and the left and right crawler belts of the lower traveling body are mounted on the tip of the arm platform. By installing a traveling operation unit that performs traveling operation in the forward and backward directions, respectively, the operation of the working device by the arm part on one side, the swing operation of the upper swing body and the traveling operation of the lower traveling body by the arm part on the other side, Each of these operations becomes easier, and the two crawler tracks are operated to run on the tip of the arm platform that is integrally installed in front of the arm support on the other side. Since the travel operation unit with lever is installed, there is no need to install a travel lever in front of the driver's seat as in the past, there is no problem that the distance between the operation lever and the travel lever is narrow, and there is no problem with the arm unit. Fingertips with wrists fixed on the platform Therefore, even a beginner can easily and stably work for a long time, and the operability is good.

  According to the first aspect of the present invention, a boom operation unit and a stick operation unit provided on one side by moving an arm support or grip on one side on a base member located on one side of the driver's seat. Since each operation of the working device is operated by only one arm part by operating the bucket operation part, even a beginner can easily operate, and the arm part support body and grip support the arm part of the operator and the arm. Because it supports the load of the part, it can withstand long-time work, and when the arm part is moved forward and backward, the boom operation part moves via the arm support body to lower and raise the boom. When the arm is moved inward and outward with the elbow as a fulcrum, the stick operation part is rotated via the arm support, and the stick is rotated in the stick-in / out direction. Move inward or outward to Since the bucket operation part is rotated via the top and the bucket is rotated in the bucket in / out direction, each operation of the work device can be easily and stably performed with the arm on one side. Can be improved.

  According to the invention described in claim 2, in the one side arm portion that operates the boom operation portion, the stick operation portion, and the bucket operation portion provided on one side by moving the one side arm support or grip, When the wrist is twisted in the right or left direction, the swing operation part is twisted via the grip, and the upper revolving unit is swung in the right or left direction. Since the swinging operation is operated with only one arm part, even a beginner can operate it easily, and each operation of the work device and the upper swing body can be easily and stably performed with one arm part. Can be improved.

  According to the third aspect of the present invention, the arm platform for mounting the arm on the other side of the operator is installed on the base member on the other side located on the other side of the driver's seat, and the tip of the arm platform is mounted. Since the traveling control unit with two levers that operate the left and right crawler belts is installed on the top, there is no need to install a traveling lever in front of the driver's seat as in the past, and the distance between the operating lever and the traveling lever is narrow. The problem that it is difficult to go in and out can be solved, and the lever of the traveling operation part is rotated by the fingertip while the wrist is fixed on the arm platform, so that even a beginner can easily work for a long time and It can be performed stably and the operability can be improved.

  According to the fourth aspect of the present invention, the arm support on the other side that integrally supports the part from the elbow of the arm on the other side of the operator on the base member on the other side located on the other side of the driver's seat. The body is provided so that it can rotate inward and outward, and the arm on the other side of the operator is moved inward and outward with the elbow as a fulcrum to rotate the arm support on the other side inward and outward. The upper revolving unit is swung in the right and left turn directions by the swing operation unit that rotates together with the support unit, and the arm unit is placed on the other arm unit in front of the other arm support unit. By installing a base unit and installing a traveling operation unit that operates the left and right crawlers of the lower traveling body in the forward and backward directions on the tip of this arm platform, respectively, by the arm part on one side Operation of the working device, swing operation of the upper revolving structure with the arm on the other side, and the lower part It can be divided into a row running operation, so that each of these operations can be made easier, and the left and right crawler belts are placed on the tip of the arm platform that is integrally installed in front of the arm support on the other side. Since the traveling control unit with two levers for traveling is installed, there is no need to install a traveling lever in front of the driver's seat as in the past, and the distance between the operating lever and the traveling lever is narrow and difficult to enter and exit. Since the lever of the travel operation unit is rotated by the fingertip while a wrist is fixed on the arm platform, even a beginner can easily and stably perform long-term work. And operability can be improved.

  Hereinafter, the present invention will be described with reference to the first embodiment shown in FIGS. 1 to 3 and the second embodiment shown in FIGS. 4 to 6.

  First, the first embodiment shown in FIGS. 1 to 3 will be described.

  As shown in FIG. 1, a hydraulic excavator as a work machine is such that an upper swing body 2 swings in a right turn / left turn direction with respect to a lower traveling body 1 that drives the left and right crawler belts 1a in forward and reverse directions, respectively. A machine body 9 is provided, and a front work device 5 as a work device is mounted on the machine body 9 together with the cab 3 and the power unit 4.

  The front working device 5 is provided such that a boom 6 can be pivoted in a boom lowering / raising direction by a boom cylinder 6c with respect to the upper swing body 2, and a stick 7 is sticked to the tip of the boom 6 by a stick cylinder 7c. The bucket 8 is provided so as to be rotatable in the in / out direction, and the bucket 8 is provided so as to be rotatable in the bucket in / out direction by a bucket cylinder 8 c with respect to the tip end portion of the stick 7.

  Inside the cab 3, along the one side and the other side of the driver's seat 11 where the operator sits, a four-way control lever device 12 and a travel control lever device 13 which are operated by the operator are installed.

  FIG. 2 shows the four-way control lever device 12 on the right side. A console box 14 as a base member on one side is installed on the right side of the driver's seat 11 when viewed from the operator of the driver's seat 11. On the upper side, there is an arm support 15 on one side that integrally supports the tip of the elbow of the arm on the right side of the operator so that the operator can move forward and backward and rotate inward and outward as viewed from the operator of the driver's seat 11. Is provided.

  The arm support 15 has a fitting groove 16 for fitting a portion ahead of the elbow of the right arm of the operator, and the front end of the fitting groove 16 projects the arm of the operator. Therefore, it is opened in a concave shape.

  A grip 19 that can be gripped by an operator via two joint portions 17 and 18 is rotatably provided in front of the arm support 15.

  More specifically, an elongated hole 21 that is elongated in the front-rear direction is provided in the upper surface portion of the console box 14, and a vertical shaft shape that is supported in the console box 14 so as to be movable in the front-rear direction through the elongated hole 21. The boom operation unit 22 is projected upward. The boom operation unit 22 moves the arm support 15 in the front / rear direction by moving the arm on the right side of the operator holding the grip 19 while being supported by the arm support 15 in the front / rear direction. As a result, the boom 6 of the front working device 5 is moved together with the arm support 15 to rotate in the boom lowering / raising direction.

  Further, a vertical axis stick operation unit 23 integrated with the lower surface of the rear portion of the arm support 15 is fitted to the boom operation unit 22 so as to be rotatable. The stick operation unit 23 is rotated together with the arm support 15 by moving the arm on the right side of the operator inward and outward with the elbow as a fulcrum and rotating the arm support 15 inward and outward. The stick 7 of the front working device 5 is moved to rotate in the stick-in / out direction.

  Furthermore, a swing operation unit 25 for swinging the upper swing body 2 in the right and left turn directions with respect to the lower traveling body 1 is provided on the support bracket 24 integrally projected on the front end surface of the arm support body 15. It is fitted so as to be rotatable by a rotating shaft 26 in the direction. This swing operation part 25 is obtained by twisting the wrist of the right arm part of the operator in the right twisting / left twisting direction and twisting the grip 19 in the right twisting / left twisting direction with respect to the one side arm support 15. It is twisted together with the grip 19 to rotate.

  Further, a bucket operation unit 28 for rotating the bucket 8 of the front working device 5 in the bucket in / out direction is provided rotatably with respect to the swing operation unit 25 by a vertical rotation shaft 27. The bucket operation unit 28 rotates the grip 19 inward and outward by moving the wrist of the right arm of the operator holding the grip 19 inwardly and outwardly. The moving shaft 27 is turned around a fulcrum.

  A wrist rest pad 29 on which the wrist of the operator's right hand is placed is provided on the bucket operation portion 28, and a grip 19 is erected vertically on the tip portion.

  On the other hand, FIG. 3 shows the left side travel control lever device 13, and a console box 31 as a base member on the other side is disposed on the left side of the driver's seat 11 when viewed from the operator of the driver's seat 11. On the console box 31, by means of a mounting bracket 32, an arm platform 33 for placing the wrist of the left arm of the operator is placed in the front-rear direction as viewed from the operator of the driver's seat 11, and this arm platform 33 Above, a wristrest pad 34 on which the wrist of the operator's left hand is placed is provided.

  A traveling control device is provided in the arm platform 33, and a traveling operation unit that operates the left and right crawler belts 1a of the lower traveling body 1 in the forward and backward directions on the tip of the arm platform 33, respectively. 35 is provided. In this traveling operation unit 35, two levers 36 are arranged side by side so that they can rotate in the forward and backward directions, respectively, and by rotating these levers 36 in the forward and backward directions by the fingertips of the operator, The left and right crawler belts 1a are operated to move forward and backward, respectively.

  The travel control device in the arm platform 33 is provided with, for example, pressure-reducing valves (so-called remote control valves, not shown) that output pilot pressures corresponding to respective lever operation amounts, or these pressure-reducing valves in space. If an angle sensor cannot be installed, an angle sensor such as a rotary potentiometer that electrically detects the amount of lever operation is installed, and the electrical signal detected by these angle sensors is piloted by a proportional pressure reducing valve. Is converted to

  Thus, the driver's seat 11 is installed inside the cab 3, and console boxes 14 and 31 are arranged on the left and right sides of the driver's seat 11, respectively. A four-way control lever device 12 having 22, 23, 25, and 28 is provided, and a traveling operation unit 35 having a traveling system traveling control lever 36 is provided on the console box 31 on the other side.

  A pressure reducing valve (so-called remote control valve, not shown) that outputs a pilot pressure corresponding to the operation amount (movement amount or rotation amount) is installed in the movable portion of each operation portion 22, 23, 25, 28, 35. Alternatively, in a space where these pressure reducing valves cannot be installed, a stroke sensor or an angle sensor (both not shown) such as a direct acting type or a rotary type potentiometer may be installed.

  Each electrical signal corresponding to the amount of movement detected by these stroke sensors or the amount of rotation detected by the angle sensor is converted to pilot pressure by an electromagnetic proportional valve, proportional pressure reducing valve, etc., and these pilot pressures are controlled by a hydraulic actuator. A control valve (not shown) of the circuit inputs the boom cylinder 6c, the stick cylinder 7c, the bucket cylinder 8c, the travel motor, and the swing motor by a plurality of spools that respectively stroke according to the pilot pressure. Control direction and flow rate respectively.

  Next, the function and effect of the first embodiment shown in FIGS. 1 to 3 will be described.

  When the operator moves the right arm holding the grip 19 in the state of being fitted and supported in the fitting groove 16 of the arm support 15 in the forward / rear direction, the arm support 15 is moved forward / backward. The shaft-like boom operation unit 22 slides forward and rearward along the long hole 21 on the upper surface of the console box 14, so that the movement direction of the boom operation unit 22 from the center of the long hole 21 and The boom cylinder 6c of the front work device 5 is operated and controlled by the boom spool of the control valve that is pilot-controlled according to the moving amount, with the moving direction and the operating speed according to the moving direction and the moving amount of the boom operating unit 22. 6 rotates in the boom lowering / raising direction.

  When the operator moves the right arm holding the grip 19 in the fitting groove 16 of the arm support 15 and moving it inward / outward with the elbow as a fulcrum, that is, in the left / right direction. When swinging horizontally, the arm support 15 and the support bracket 24 are rotated inward and outward, and the shaft-shaped stick operation unit 23 is rotated with respect to the shaft-shaped boom operation unit 22. The stick of the front working device 5 is operated with the operation direction and operation speed corresponding to the rotation direction and the rotation amount of the stick operation unit 23 by the spool spool of the control valve pilot controlled according to the rotation direction and the rotation amount of the unit 23. The cylinder 7c is controlled and the stick 7 rotates in the stick-in / out direction.

  When the operator moves the wrist of the right arm holding the grip 19 in a state of being fitted and supported in the fitting groove 16 of the arm support 15, the left and right directions, that is, inward and outward, together with the grip 19 Since the bucket operation unit 28 horizontally rotates inward and outward with a pivot shaft 27 in the vertical direction as a fulcrum, the bucket operation unit 28 is used for a control valve bucket that is pilot-controlled according to the rotation direction and the rotation amount of the bucket operation unit 28 By the spool, the bucket cylinder 8c of the front work device 5 is controlled by the operation direction and the operation speed according to the rotation direction and the rotation amount of the bucket operation unit 28, and the bucket 8 rotates in the bucket in / out direction.

  When the operator grips the grip 19 in the state of being fitted and supported in the fitting groove 16 of the arm support 15, the wrist of the right arm is twisted in the right or left twist direction as viewed from the operator, the arm The grip 19 is twisted in the right and left twist directions with respect to the support 15, and the swing operation unit 25 that is rotatably installed concentrically with the support bracket 24 is twisted together with the grip 19 around the rotation shaft 26. Therefore, the pivoting spool of the control valve that is pilot-controlled according to the rotation direction and the rotation amount of the swing operation unit 25 causes the operation direction according to the rotation direction and the rotation amount of the swing operation unit 25 and The turning motor of the upper swing body 2 operates at the operating speed, and the upper swing body 2 swings in the right turn / left turn direction.

  On the other hand, when the operator operates the traveling system, the wrist on the left arm is placed on the wrist rest pad 34 of the arm platform 33 placed on the console box 31 on the left to fix the left arm. The left and right levers 36 of the traveling operation unit 35 are rotated forward and backward by the fingertips of the left hand, respectively, so that the left and right crawler belts 1a of the lower traveling body 1 are traveled in the forward and backward directions, respectively.

  As described above, the four-way control lever device 12 shown in FIG. 2 is provided on one side by moving the arm support 15 or the grip 19 on one side on the console box 14 located on one side of the driver's seat 11. By operating the boom operation unit 22, the stick operation unit 23, and the bucket operation unit 28, each operation of the front work device 5 is operated by only one arm, so that even a beginner can easily operate the arm. Supports the arm part of the operator by supporting the arm 15 by the support 15 and the grip 19, so that it can withstand long-time work, and when the arm is moved forward and backward, the arm support 15, the boom operation unit 22 moves to rotate the boom 6 in the boom lowering / upward direction, and when the arm is moved inward / outward with the elbow as a fulcrum, the stick is operated via the arm support 15. Part 23 rotates to stick 7 When the wrist is moved inward / outward and the wrist is moved inward / outward, the bucket operation unit 28 is rotated via the grip 19 to rotate the bucket 8 in the bucket in / out direction. Each operation of the device 5 can be easily and stably performed by the arm portion on one side, and the operability can be improved.

  Further, the four-direction control lever device 12 shown in FIG. 2 is configured to move the arm support 15 or the grip 19 on one side to provide a boom operation unit 22, a stick operation unit 23, and a bucket operation unit 28 provided on one side. When the wrist is twisted in the right or left direction, the swing operation unit 25 is twisted via the grip 19, and the upper revolving unit 2 is swung in the right or left direction. As a result, the swing operation of the upper swing body 2 is operated with only one arm portion together with the respective operations of the front work device 5, so that even a beginner can easily operate, and each of the front work device 5 and the upper swing body 2 can be operated. The operation can be easily and stably performed with the arm on one side, and the operability can be improved.

  In addition, the travel control lever device 13 shown in FIG. 3 has an arm support platform 33 on which a wrist of the left arm of the operator is placed on a console box 31 located on the other side of the driver's seat 11. Since the traveling operation unit 35 having the two levers 36 for traveling the left and right crawler belts 1a is installed on the tip of the arm platform 33, it is necessary to install the traveling lever in front of the driver's seat 11 as in the past. In addition to solving the problem that the distance between the operation lever and the travel lever is narrow, it is difficult to enter and exit, and the lever 36 of the travel operation unit 35 is rotated by the fingertip while the wrist is fixed on the arm platform 33. Therefore, even a beginner can perform a long-time operation easily and stably, and the operability can be improved.

  As described above, the four-direction control lever device 12 on the console box 14 on one side shown in FIG. 2 enables the entire operation of the front work device 5 and the swing operation of the upper swing body 2 to be operated. Only the traveling control lever device 13 needs to be installed on the console box 31 on the other side shown in FIG. 3, and there is no need to provide a traveling lever in front of the driver's seat 11.

  In other words, by installing the lever 36 of the traveling operation unit 35 on the arm support 33 installed on the console box 31 on the other side, the traveling lever is installed at the hand, and the traveling lever is installed in front of the driver's seat 11. Because it is not necessary to go to and from the driver's cab, it becomes easier.

  In addition, it is possible to attach an attachment pedal for attachment operation in front of the driver's seat 11 instead of the traveling lever, and it is possible to attach the attachment pedal without removing the footrest that was previously removed to attach the attachment pedal. It becomes possible. Alternatively, the number of attachment pedals can be increased from the conventional two to four.

  Also, with the four-way control lever device 12 shown in FIG. 2, if the traveling pedal is installed in front of the driver's seat 11 as before, the hydraulic excavator can be operated with one arm, and a working machine that can be operated by a disabled person is also provided. can do.

  Further, the operator can operate the arm with the arm support 15 and the wrist with the wrist rest pads 29, 34, so there is no problem in long-time work and good operability.

  Next, a second embodiment shown in FIGS. 4 to 6 will be described.

  As shown in FIG. 4, the hydraulic excavator as a work machine is such that the upper swing body 2 swings in the right and left turning directions with respect to the lower traveling body 1 that drives the left and right crawler belts 1 a in the forward and backward directions, respectively. A machine body 9 is provided, and a front work device 5 as a work device is mounted on the machine body 9 together with the cab 3 and the power unit 4.

  The front working device 5 is provided such that a boom 6 can be pivoted in a boom lowering / raising direction by a boom cylinder 6c with respect to the upper swing body 2, and a stick 7 is sticked to the tip of the boom 6 by a stick cylinder 7c. The bucket 8 is provided so as to be rotatable in the in / out direction, and the bucket 8 is provided so as to be rotatable in the bucket in / out direction by a bucket cylinder 8 c with respect to the tip end portion of the stick 7.

  Inside the cab 3, along the one side and the other side of the driver's seat 11 where the operator sits, a three-way control lever device 12a operated by the operator and a traveling / turning control lever device 13a are installed.

  FIG. 5 shows the three-way control lever device 12a on the right side. A console box 14 as a base member on one side is installed on the right side of the driver's seat 11 when viewed from the operator of the driver's seat 11, and the console box 14 on the one side is installed. On the upper side, there is an arm support 15 on one side that integrally supports the tip of the elbow of the arm on the right side of the operator so that the operator can move forward and backward and rotate inward and outward as viewed from the operator of the driver's seat 11. Is provided.

  The arm support 15 has a fitting groove 16 for fitting a portion ahead of the elbow of the right arm of the operator, and the front end of the fitting groove 16 projects the arm of the operator. Therefore, it is opened in a concave shape.

  In front of the arm support 15, a grip 19 that can be gripped by an operator via a joint 18 is rotatably provided.

  More specifically, an elongated hole 21 that is elongated in the front-rear direction is provided in the upper surface portion of the console box 14, and a vertical shaft shape that is supported in the console box 14 so as to be movable in the front-rear direction through the elongated hole 21. The boom operation unit 22 is projected upward. The boom operation unit 22 moves the arm support 15 in the front / rear direction by moving the arm on the right side of the operator holding the grip 19 while being supported by the arm support 15 in the front / rear direction. As a result, the boom 6 of the front working device 5 is moved together with the arm support 15 to rotate in the boom lowering / raising direction.

  Further, a vertical axis stick operation unit 23 integrated with the lower surface of the rear portion of the arm support 15 is fitted to the boom operation unit 22 so as to be rotatable. The stick operation unit 23 is rotated together with the arm support 15 by moving the arm on the right side of the operator inward and outward with the elbow as a fulcrum and rotating the arm support 15 inward and outward. The stick 7 of the front working device 5 is moved to rotate in the stick-in / out direction.

  Further, the bucket 8 of the front working device 5 is rotated in the bucket in / out direction by the vertical rotation shaft 27 with respect to the support bracket 24 integrally projected forward from the lower surface of the arm support 15. A bucket operation unit 28 is rotatably provided. The bucket operation unit 28 rotates the grip 19 inward and outward by moving the wrist of the right arm of the operator holding the grip 19 inwardly and outwardly. The moving shaft 27 is rotated horizontally around the fulcrum.

  A wrist rest pad 29 on which the wrist of the operator's right hand is placed is provided on the bucket operation portion 28, and a grip 19 is erected vertically on the tip portion.

  On the other hand, FIG. 6 shows the left traveling / turning control lever device 13a, and a console box 31 as a base member on the other side is disposed on the left side of the driver's seat 11 when viewed from the operator of the driver's seat 11, On the console box 31 on the side, the arm support body 41 on the other side that integrally supports the tip of the arm on the left side of the operator is pivotable inward and outward as viewed from the operator of the driver's seat 11 Is provided.

  This arm portion support body 41 has a fitting groove 42 for fitting a portion ahead of the elbow of the left arm portion of the operator, and the front end of this fitting groove 42 projects the arm portion of the operator. Therefore, it is opened in a concave shape.

  Further, a fixed boss portion 43 is provided on the upper surface of the console box 31 so as to project upward, and a vertical shaft-like swing operation portion 44 integrated with the rear lower surface of the arm support body 41 is provided on the fixed boss portion 43. It is pivotably fitted. The swing operation part 44 moves the left arm part 41 of the operator inward / outward with the elbow as a fulcrum to rotate the left arm support part 41 inward / outward direction. The upper revolving unit 2 is swung in the right and left turning directions with respect to the lower traveling unit 1.

  Further, an arm platform 33 for mounting the wrist of the left arm of the operator is integrally installed on a support bracket 45 that is integrated with the lower surface of the arm support 41 and protrudes from the front end surface. On the platform 33, there is provided a wrist rest pad 34 on which the wrist of the operator's left hand is placed.

  A traveling control device is provided in the arm platform 33, and a traveling operation unit that operates the left and right crawler belts 1a of the lower traveling body 1 in the forward and backward directions on the tip of the arm platform 33, respectively. 35 is provided. In this traveling operation unit 35, two levers 36 are arranged side by side so that they can rotate in the forward and backward directions, respectively, and by rotating these levers 36 in the forward and backward directions by the fingertips of the operator, The left and right crawler belts 1a are operated to move forward and backward, respectively.

  The travel control device in the arm platform 33 is provided with, for example, pressure-reducing valves (so-called remote control valves, not shown) that output pilot pressures corresponding to respective lever operation amounts, or these pressure-reducing valves in space. If an angle sensor cannot be installed, an angle sensor such as a rotary potentiometer that electrically detects the amount of lever operation is installed, and the electrical signal detected by these angle sensors is piloted by a proportional pressure reducing valve. Is converted to

  Thus, in the second embodiment, the three-way control lever device 12a shown in FIG. 5 and the traveling / turning control lever device 13a shown in FIG. 6 are operated as shown in FIG. It is installed on the right and left sides of the seat. In short, in the first embodiment shown in FIGS. 1 to 3, the rotation of the rotation shaft 26 of the swing operation unit 25 is abolished. An alternative mechanism is installed on the traveling control lever device side.

  That is, three operation units 22, 23, and 28 are provided on the console box 14 on one side, and the traveling operation unit 35 for the traveling system and the swing operation unit 44 for the turning system are provided on the console box 31 on the other side. Is provided.

  A pressure reducing valve (so-called remote control valve, not shown) that outputs a pilot pressure corresponding to the operation amount (movement amount or rotation amount) is installed in the movable portion of each operation portion 22, 23, 28, 35, 44. Alternatively, in a space where these pressure reducing valves cannot be installed, a stroke sensor or an angle sensor (both not shown) such as a direct acting type or a rotary type potentiometer may be installed.

  Each electrical signal corresponding to the amount of movement detected by these stroke sensors or the amount of rotation detected by the angle sensor is converted to pilot pressure by an electromagnetic proportional valve, proportional pressure reducing valve, etc., and these pilot pressures are controlled by a hydraulic actuator. A control valve (not shown) of the circuit inputs the boom cylinder 6c, the stick cylinder 7c, the bucket cylinder 8c, the travel motor, and the swing motor by a plurality of spools that respectively stroke according to the pilot pressure. Control direction and flow rate respectively.

  Next, the function and effect of the second embodiment shown in FIGS. 4 to 6 will be described.

  When the operator moves the right arm holding the grip 19 in the state of being fitted and supported in the fitting groove 16 of the arm support 15 in the forward / rear direction, the arm support 15 is moved forward / backward. The shaft-like boom operation unit 22 slides forward and rearward along the long hole 21 on the upper surface of the console box 14, so that the movement direction of the boom operation unit 22 from the center of the long hole 21 and The boom cylinder 6c of the front work device 5 is operated and controlled by the boom spool of the control valve that is pilot-controlled according to the moving amount, with the moving direction and the operating speed according to the moving direction and the moving amount of the boom operating unit 22. 6 rotates in the boom lowering / raising direction.

  When the operator moves the right arm holding the grip 19 in the fitting groove 16 of the arm support 15 and moving it inward / outward with the elbow as a fulcrum, that is, in the left / right direction. When swinging horizontally, the arm support 15 and the support bracket 24 are rotated inward and outward, and the shaft-shaped stick operation unit 23 is rotated with respect to the shaft-shaped boom operation unit 22. The stick of the front working device 5 is operated with the operation direction and operation speed corresponding to the rotation direction and the rotation amount of the stick operation unit 23 by the spool spool of the control valve pilot controlled according to the rotation direction and the rotation amount of the unit 23. The cylinder 7c is controlled and the stick 7 rotates in the stick-in / out direction.

  When the operator moves the wrist of the right arm holding the grip 19 in a state of being fitted and supported in the fitting groove 16 of the arm support 15, the left and right directions, that is, inward and outward, together with the grip 19 Since the bucket operation unit 28 horizontally rotates inward and outward with a pivot shaft 27 in the vertical direction as a fulcrum, the bucket operation unit 28 is used for a control valve bucket that is pilot-controlled according to the rotation direction and the rotation amount of the bucket operation unit 28 By the spool, the bucket cylinder 8c of the front work device 5 is controlled by the operation direction and the operation speed according to the rotation direction and the rotation amount of the bucket operation unit 28, and the bucket 8 rotates in the bucket in / out direction.

  On the other hand, when the operator operates the turning system, the wrist rest 33 of the arm support 33 is fitted and supported in the fitting groove 42 of the arm support 41 installed on the left console box 31. When the left arm with the wrist fixed to the pad 34 is moved inward and outward with the elbow as a fulcrum, that is, when it is shaken horizontally in the left and right directions, the arm support 41 and the arm support 33 are moved in and out. Since the shaft-like swing operation unit 44 is rotated outward, the swing operation of the control valve is controlled by the control valve swing spool according to the rotation direction and the rotation amount of the swing operation unit 44. The turning motor of the upper swing body 2 is controlled by the operation direction and the operation speed according to the rotation direction and the rotation amount of the part 44, and the upper swing body 2 swings in the right turn / left turn direction.

  Further, when the operator operates the traveling system, the wrist is placed on the wrist rest pad 34 of the arm support 33 with the left arm elbow inserted in the fitting groove 42 of the left arm support 41. The left arm is fixed on the left and the left and right levers 36 of the traveling operation unit 35 are rotated forward and backward by the fingertips of the left hand to advance the left and right crawler belts 1a of the lower traveling body 1 respectively.・ Run the vehicle in the reverse direction.

  As described above, the three-way control lever device 12a shown in FIG. 5 is provided on one side by moving the arm support 15 or the grip 19 on one side on the console box 14 located on one side of the driver's seat 11. By operating the boom operation unit 22, the stick operation unit 23, and the bucket operation unit 28, each operation of the front work device 5 is operated by only one arm, so that even a beginner can easily operate the arm. Supports the arm part of the operator by supporting the arm 15 by the support 15 and the grip 19, so that it can withstand long-time work, and when the arm is moved forward and backward, the arm support 15, the boom operation unit 22 moves to rotate the boom 6 in the boom lowering / upward direction, and when the arm is moved inward / outward with the elbow as a fulcrum, the stick is operated via the arm support 15. Part 23 rotates to stick 7 When the wrist is moved inward / outward and the wrist is moved inward / outward, the bucket operation unit 28 is rotated via the grip 19 to rotate the bucket 8 in the bucket in / out direction. Each operation of the device 5 can be easily and stably performed by the arm portion on one side, and the operability can be improved.

  In addition, the travel / turning control lever device 13a shown in FIG. 6 integrally supports the front part of the left arm of the operator on the console box 31 located on the other side of the driver's seat 11. The arm support 41 on the side is provided so that it can rotate inward and outward, and the left arm of the operator is moved inward and outward with the elbow as a fulcrum to rotate the arm support 41 on the other side inward and outward. The upper swing body 2 is swung in the right and left swing directions by the swing operation section 44 that rotates together with the arm support body 41 by the movement, and the operator's arm is positioned in front of the arm support body 41 on the other side. The arm support platform 33 on which the wrist of the left arm is placed is integrally installed, and the left and right crawler belts 1a of the lower traveling body 1 are traveled in the forward and backward directions on the tip of the arm support platform 33, respectively. Front working device with right arm by installing traveling operation unit 35 5 can be operated separately from the swing operation of the upper revolving structure 2 and the traveling operation of the lower traveling body 1 by the left arm, so that each of these operations can be made easier, and the other arm Since the traveling operation unit 35 having the two levers 36 for operating the left and right crawler belts 1a is installed on the front end of the arm platform 33 integrally installed in front of the support body 41, it is operated as in the past. It is not necessary to install a travel lever in front of the seat 11, and the problem that the distance between the control lever and the travel lever is narrow and difficult to enter and exit is solved, and the wrist is fixed on the wrist rest pad 34 of the arm platform 33. In this state, the levers 36 of the travel operation unit 35 are rotated by the fingertips, so that even a beginner can easily and stably perform long-time work and improve operability.

  As described above, the three-way control lever device 12a shown in FIG. 5 and the traveling / turning control lever device 13a shown in FIG. 6 are divided into one side and the other side of the driver's seat 11, Since one side is divided into the operation of the front working device 5 and the other side is divided into the swing operation of the upper swing body 2 and the travel operation of the lower traveling body 1, the operation becomes easier.

  Furthermore, with these operating devices, since the simulated operation can be performed in a state where the movements in the three directions of the front work device 5 are deployed horizontally, an operating device that can be easily operated even by a beginner can be provided.

  In addition, the operator can operate with his / her arms on the arm supports 15 and 41 and wrists on the wrist rest pads 29 and 34, so there is no problem with long-time work and good operability. .

  Further, since the travel lever can be installed at hand by the lever 36 of the travel operation unit 35 and does not need to be installed in front of the driver's seat 11, entry into and exit from the driver's cab is facilitated.

  Further, it is possible to attach an attachment pedal in front of the driver's seat 11 instead of the travel lever, and it is possible to attach the attachment pedal without removing the footrest that has been removed for attaching the attachment pedal. Alternatively, the number of attachment pedals can be increased from the conventional two to four.

  The present invention can be applied not only to a swing type hydraulic excavator but also to a non-turn type backhoe.

1 is a perspective view showing a first embodiment of a work machine operating device according to the present invention. It is a perspective view which shows the four-way control lever apparatus of the right side of an operating device same as the above. It is a perspective view which shows the left travel control lever apparatus of an operating device same as the above. It is a perspective view which shows 2nd Embodiment of the operating device of the working machine which concerns on this invention. It is a perspective view which shows the three-way control lever apparatus of the right side of an operating device same as the above. It is a perspective view which shows the driving | running | working / turning control lever apparatus of the left side of an operating device same as the above.

Explanation of symbols

1 Lower traveling body
1a crawler belt 2 upper revolving body 5 front work device as work device 6 boom 7 stick 8 bucket 9 machine body
11 Driver's seat
14 Console box as base member on one side
15 Arm support on one side
17, 18 joints
19 grip
22 Boom control section
23 Stick control
25 Swing operation section
28 Bucket control
31 Console box as base member on the other side
33 Arm rest
35 Travel control section
36 lever
41 Arm support on the other side
44 Swing control section

Claims (4)

The boom of a working device equipped with a boom, stick and bucket is provided to be able to rotate in the boom lowering and raising direction, and the stick is provided to be able to rotate in the stick-in / out direction with respect to the tip of the boom. The operation device is arranged along the driver's seat of the work machine provided such that the bucket is rotatable in the bucket in / out direction with respect to the tip of the stick,
A base member on one side disposed on one side of the driver seat;
On one base member, the one side of the arm that is provided so as to be movable in the front-rear direction and to be able to rotate inward and outward as viewed from the operator at the driver's seat, and integrally supports the part from the elbow of the arm part on one side of the operator. An arm support;
A grip that is pivotably provided in front of the arm support via at least one joint and is gripped by an operator;
Move with the arm support by moving the arm support on the one side of the operator holding the grip while being supported by the arm support in the forward / backward direction and moving the arm support in the forward / backward direction. A boom operation unit for rotating the boom of the work device in the boom lowering / raising direction;
The arm on one side of the operator is moved inward and outward with the elbow as a fulcrum, and the arm support is rotated inward and outward to rotate with the arm support to stick the stick of the work device. A stick operation unit that rotates in and out, and
Move the wrist of the arm on one side of the operator holding the grip inward / outward and rotate the grip inward / outward to rotate the grip and rotate the bucket of the working device in the bucket in / out direction. An operating device for a working machine, comprising: a bucket operating unit that rotates. The upper revolving structure is arranged along the driver's seat of the work machine having the airframe provided so as to be able to swing in the right and left turning directions with respect to the lower traveling body that drives the left and right crawler belts in the forward and backward directions. An operating device,
Twist the wrist of the arm on one side of the operator in the right / left twist direction and twist the grip to the right / left twist direction against the arm support on the one side. The operating device for a work machine according to claim 1, further comprising a swing operation unit that swings the upper swing body in a right turn / left turn direction. A base member on the other side disposed on the other side of the driver seat;
An arm platform that is installed in the front-rear direction as viewed from the operator of the driver's seat on the base member on the other side, and on which the arm on the other side of the operator is placed;
There are two levers arranged side by side on the front end of the arm platform so that the front and rear can be pivoted in the left and right directions. The operating device for a working machine according to claim 2, further comprising: a traveling operation unit configured to travel the left and right crawler tracks of the traveling body in the forward and backward directions. The upper turning body is arranged along the driver's seat of a work machine having a body that is swingable in the right and left turning directions with respect to the lower traveling body that drives the left and right crawler belts in the forward and backward directions, respectively. An operating device,
A base member on the other side disposed on the other side of the driver seat;
An arm support on the other side, which is provided on the base member on the other side so as to be pivotable inward and outward as viewed from the operator of the driver's seat, and integrally supports the tip of the arm on the other side of the operator. ,
An arm mounting base that is integrally installed in front of the arm support on the other side and places the arm on the other side of the operator;
The operator's arm on the other side is moved inward and outward with the elbow as a fulcrum, and the arm support on the other side is rotated inward and outward to rotate with the arm support so that the lower traveling body. A swing operation unit that swings the upper swing body in the right and left turn directions;
It has two levers arranged side by side on the tip of the arm platform so that it can be rotated in the front and rear directions. The operating device for a work machine according to claim 1, further comprising: a traveling operation unit configured to travel the left and right crawler belts in the forward and backward directions.

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