JP2009215702A - Revolving working vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a revolving working vehicle capable of turning a door up to a desired turning position easily and smoothly while an operator is seated on a driver's seat inside a cabin. <P>SOLUTION: This revolving working vehicle is provided with a revolving frame provided on a running device to revolve and the cabin provided on the revolving frame and has the door 60 being backward turnable around a shaft axis in the vertical direction in a side face part of the cabin on a front side of the driver's seat 41 arranged on the inner side of the cabin. A handle 70 is provided on an inner side face of the cabin of the door 60. The handle 70 is composed of a first grip part 70a arranged on a driver's seat 41 side and extended in the vertical direction and a second grip part 70b arranged on an opening side of the door 60 and extended in the forward and backward directions. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a turning work vehicle including a cabin. In detail, it is related with the technique of the door which the said cabin has.

2. Description of the Related Art Conventionally, a swivel base provided on a traveling device so as to be turnable, and a cabin provided on the swivel base, a front side of a driver's seat disposed inside the cabin, on a side portion of the cabin. 2. Description of the Related Art A turning work vehicle having a door that can be rotated rearward around a vertical axis is known. In such a turning work vehicle, a handle (handrail) for assisting the turning operation of the door is provided on the inner side surface of the cabin of the door, and the operator pushes and pulls the handle to turn the door. Thus, the cabin entrance / exit can be opened and closed (see, for example, Patent Document 1).
JP 2001-152487 A

  However, in a conventional turning work vehicle, since the front and rear width of the handle of the door is short, when the door is rotated to the rear of the cabin and the cabin entrance is opened, the driver can move the inside of the cabin. When sitting in the driver's seat at, it was difficult to grasp the handle, and the door could not be closed smoothly. In addition, when the cabin entrance is closed by the door, the operator can only open the door to a certain position even if he / she is seated in the driver's seat inside the cabin even if he / she grasps and pushes the handle. The door could not be smoothly opened to the desired rotational position.

  Accordingly, an object of the present invention is to provide a turning work vehicle that can easily and smoothly turn a door to a desired turning position in a state where a driver is seated in a driver's seat inside a cabin. .

  The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

  That is, according to the first aspect of the present invention, the vehicle includes a swivel that is turnable on the traveling device, and a cabin that is provided on the swivel, and at a front side of a driver seat that is disposed inside the cabin. A revolving work vehicle having a door that is pivotable rearwardly about a vertical axis on a side surface of the cabin, and a handle is provided on an inner side of the cabin of the door, the handle on the driver's seat side It has a 1st holding part arranged and extended in the up-and-down direction, and a 2nd holding part arranged at the opening side of the door and extended in the front-and-rear direction.

  According to a second aspect of the present invention, the handle is arranged at the same height as the driver seat.

  According to a third aspect of the present invention, the second gripping portion is disposed below the first gripping portion.

  According to a fourth aspect of the present invention, the second gripping portion is disposed so as to be inclined in a front-rear and a rear-high state.

  According to a fifth aspect of the present invention, the second gripping portion is provided continuously to the first gripping portion, and the first gripping portion and the second gripping portion are integrally configured.

  As effects of the present invention, the following effects can be obtained.

  According to the first aspect of the present invention, it is possible for the operator to hold the first gripping portion or the second gripping portion of the handle appropriately according to the rotation position of the door and perform the rotation operation of the door. Therefore, the door can be easily and smoothly rotated to a desired rotation position in a state where the operator is inside the cabin, particularly in a state where the driver is seated in the driver's seat.

  According to the second aspect of the present invention, the first gripping part or the second gripping part can be easily gripped while the operator is seated on the driver's seat.

  According to the third aspect of the present invention, the operator can grip an appropriate gripping portion of the first gripping portion and the second gripping portion according to the rotational position of the door when the door is turned.

  According to the fourth aspect of the present invention, it is possible to easily grasp the second grip portion while the operator is seated in the driver's seat.

  According to the fifth aspect of the present invention, the operator can easily change the first grip portion and the second grip portion. Further, the handle can be configured easily.

  Next, embodiments of the invention will be described.

  FIG. 1 is a left side view showing the overall configuration of a turning work vehicle according to an embodiment of the present invention, and FIG. 2 is a plan view showing the configuration of a cabin in a state where the door is rotated backward with respect to the entrance / exit. 3 is a right side view showing the structure of the door, FIG. 4 is a front view showing the structure of the door, and FIG. 5 is a plan view showing the structure of the door.

  As shown in FIG. 1, a turning work vehicle 1 according to an embodiment of the present invention includes a traveling device 10 that travels a vehicle, a working device 20 that performs various operations such as excavation work, and the orientation of the working device 20. A revolving body 30 that revolves to change is provided. The swivel body 30 is provided on the traveling device 10 so as to be turnable in the horizontal direction, and the work device 20 is mounted on the front portion of the swivel body 30.

  The traveling device 10 includes a pair of left and right crawlers 11. These crawlers 11 are disposed below the left and right sides of the revolving structure 30 and can be driven by an engine included in the revolving structure 30.

  The working device 20 includes a bracket 21, a boom 22, an arm 23, a bucket 24, and the like. The bracket 21 is attached to the front left and right center of the revolving body 30 so as to be rotatable left and right, and the boom 22 is connected to the bracket 21 so as to be rotatable up and down. The arm 23 is rotatably connected to the distal end portion of the boom 22, and the bucket 24 is rotatably connected to the distal end portion of the arm 23. These members can be rotated by swing cylinders and hydraulic cylinders 26, 27, and 28 (not shown).

  The swivel body 30 is provided with a swivel base 31. The swivel base 31 is formed in a substantially semicircular shape with the outer periphery from the left and right ends to the rear end being arcuate in a plan view. The swivel base 31 is disposed on the traveling device 10 and is supported by the traveling device 10 via a swivel bearing in the vicinity of the front, rear, left, and right centers so as to be turnable in a horizontal direction by a motor.

  The swivel body 30 is also provided with an engine, a hydraulic pump, a radiator, a hydraulic oil tank, a fuel tank, and the like. These members are respectively disposed on the rear part or the front right side of the swivel base 31 and covered with a bonnet 32. The bonnet 32 is provided on the rear part of the swivel base 31 over the left and right sides, and is provided on the right side part of the swivel base 31 over the front and rear.

  In addition to the revolving structure 30, a driver's seat 41, a step, a control lever, a control pedal, and the like are provided. These members are arranged on the left side of the front part of the turntable 31 as a part of the driving unit 40 of the turning work vehicle 1 and are covered with the cabin 50. The cabin 50 is provided on the front left side of the swivel base 31 so as to extend upward.

  As shown in FIG. 2, the cabin 50 includes a cabin frame 51, a roof 52, a front glass 53, a right glass, a right panel, a rear glass, a left glass 57, a left panel 58, and a door. 60. The cabin frame 51 has the same width as the left side of the swivel base 31, is formed in a pentagonal shape in plan view, and is formed in a frame shape around the operating unit 40.

  The roof 52 is provided on the upper side of the cabin frame 51. The front glass is provided on the front side of the cabin frame 51, and the rear glass is provided on the rear side of the cabin frame 51. The right glass and the right panel are provided on the right side of the cabin frame 51, and the left glass 57, the left panel 58, and the door 60 are provided on the left side of the cabin frame 51.

  Thus, the roof 52 forms the upper surface portion of the cabin 50. A front surface portion of the cabin 50 is formed by the front glass, and a rear surface portion of the cabin 50 is formed by the rear glass. The upper side of the right side surface portion of the cabin 50 is formed by the right glass, and the lower side of the right side surface portion of the cabin 50 is formed by the right panel.

  The left glass 57 forms the rear side and the upper side of the left side surface portion of the cabin 50, and the left panel 58 forms the rear side and the lower side of the left side surface portion of the cabin 50. The front side of the left side surface portion of the cabin 50 is formed by the door 60.

  In the left side surface portion of the cabin 50, a left frame 51a that forms a part of the cabin frame 51 is provided in the middle of the front and rear of the cabin frame 51 so as to extend in the vertical direction, and the left glass 57, the left panel 58, and the door 60. That is, the door 60 is disposed in front of the left frame 51a, and the left glass 57 and the left panel 58 are disposed behind the left frame 51a.

  In the left side surface portion of the cabin 50, an opening 51b is formed on the left front portion of the cabin frame 51 including the left frame 51a so as to open to the left side. The opening 51b serves as an entrance / exit of the cabin 50 when the operator gets on / off the driver 40, and the door 60 can be opened / closed to / from the entrance / exit.

  The door 60 is supported by a hinge 59 on the left frame 51a, and is rotatable about the vertical axis of the hinge 59 with respect to the entrance / exit of the cabin 50. Thus, when the door 60 is in a closed state in which the entrance / exit is closed, the entrance / exit is opened by being rotated outwardly of the cabin and then backward. On the other hand, when the door 60 is in the open state in which the entrance / exit is opened, the entrance / exit is closed by rotating forward and then inward of the cabin.

  At the inner front portion of the cabin 50, among the members constituting the operation unit 40, the step is provided so as to extend rightward from the lower end of the entrance / exit, and the control pedal is disposed on the step. In addition, at the inner rear portion of the cabin 50, the driver's seat 41 is arranged at the substantially right and left center, and the control lever is arranged at the left and right sides of the driver's seat 41. Thus, the door 60 is positioned in front of the driver's seat 41.

  As shown in FIGS. 3, 4, and 5, the door 60 includes a door frame 61, an upper glass 62, and a lower glass 63. The door frame 61 is a frame-like frame having an outer peripheral shape that matches the entrance / exit of the cabin 50, and can be brought into contact with an opening 51b of the cabin frame 51 that forms the entrance / exit at the outer periphery via a seal member. Yes.

  The door frame 61 includes a front frame 61a, a rear frame 61b, an upper frame 61c, a lower frame 61d, and an intermediate frame 61e. When the door 60 is in the closed state, among these frames of the door frame 61, the front frame 61a and the rear frame 61b are provided so as to extend in the vertical direction, and are respectively provided at the front end side and the rear end side of the entrance / exit. Has been placed. The upper frame 61c and the lower frame are provided so as to extend in the front-rear direction, and are respectively disposed on the upper end side and the lower end side of the entrance / exit.

  The upper end of the front frame 61a and the upper end of the rear frame 61b are connected via the upper frame 61c, and the lower end of the front frame 61a and the lower end of the rear frame 61b are connected via the lower frame 61d. Yes. In the frame space surrounded by these frames, the intermediate frame 61e is provided so as to extend in the front-rear direction, and is disposed so as to be inclined in the front-rear and rear-height so as to be located near the center of the entrance / exit. . The front end portion of the intermediate frame 61e is connected to the upper and lower middle portions of the front frame 61a, and the rear end portion is connected to the upper and lower middle ends of the rear frame 61b.

  The upper glass 62 is provided in an upper space of the inner space partitioned vertically by the intermediate frame 61e, and includes an upper portion of the front frame 61a, an upper portion of the rear frame 61b, an upper frame 61c, and an intermediate frame 61e. It is fixed via a seal member. The lower glass 63 is provided in a lower space of the inner space of the frame, and is fixed to the lower part of the front frame 61a, the lower part of the rear frame 61b, the lower frame 61d, and the intermediate frame 61e via a seal member. The

  Rear holding means is provided in the front and rear halfway portion of the cabin outer surface of the intermediate frame 61e and the left panel 58. The rear holding means has a holding mechanism and an operation lever, and is configured so that the door 60 is locked to the left panel 58 by the holding mechanism and held in the open state, and the holding state can be released by the operation lever. ing.

  A front holding means 67 is provided on the inner side surface of the cabin of the intermediate frame 61 e on the opening side of the door 60. The front holding means 67 has a holding mechanism and an operation lever 67a. The holding mechanism locks the door 60 to the cabin frame 51 by the holding mechanism and holds the door 60 in the closed state. It is configured.

  The front holding means 67 also has an operation lever 67b facing the cabin outer surface of the intermediate frame, and is configured so that the holding state can be released by the operation lever 67b. The operation lever 67 b is used as a handle to assist the opening / closing operation of the door 60. The operation lever 67 b is grasped by the operator when the door 60 is rotated and pushed and pulled from the outside of the cabin 50. By this pushing and pulling, the door 60 is rotated.

  A handle is installed near the driver's seat 41 between the upper part of the intermediate frame 61e and the upper and lower middle parts of the rear frame 61b, with the longitudinal direction being the front-rear direction and a width about half the front-rear width of the door 60. The handle 70 is used to assist the rotation operation of the door 60, and is gripped by the operator when the door 60 is rotated, and pushed and pulled from the inside of the cabin 50. By this pushing and pulling, the door 60 is rotated.

  The handle 70 is provided on the rear side of the intermediate frame 61e above the intermediate frame 61e, and is disposed at the same height as the driver seat 41. The handle 70 is provided with a first gripping portion 70a and a second gripping portion 70b, as well as a first fixing portion 70c and a second fixing portion 70d. Among the parts of the handle 70, the first gripping portion 70a and the first fixing portion 70c are arranged on the rear side, that is, the driver's seat 41 side, and the second gripping portion 70b and the second fixing portion 70d are on the front side, that is, the door 60. It is arranged on the open side.

  In the present embodiment, the handle 70 is formed in a stepped shape by bending a round bar-like member at several points in the longitudinal direction thereof, and the respective parts are configured integrally. However, the constituent member of the handle 70 is not particularly limited to a round bar member as long as it is easy to grip. Specifically, each part of the handle is arranged so as to be a first fixing part 70c, a first gripping part 70a, a second gripping part 70b, and a second fixing part 70d in order from the back in succession. Is provided.

  The first fixing portion 70c is provided so as to extend in the front-rear direction, and is arranged so that the front end portion is inclined to the right side of the rear end portion, that is, in a state located inside the cabin. The rear end portion of the first fixing portion 70c is fixed to the middle portion of the rear frame 61b between the upper frame 61c and the intermediate frame 61e of the door frame 61. The front end portion of the first fixing portion 70c is arranged at a set interval that is set to such an extent that a palm enters between the upper glass 62 while maintaining the same height as the rear end portion.

  The first gripping portion 70a is provided so as to extend in the vertical direction in front of and below the first fixing portion 70c, and is arranged in parallel with the upper glass 62 with the set interval. The upper end portion of the first gripping portion 70a is connected to the front end portion of the first fixing portion 70c. The lower end portion of the first gripping portion 70a is disposed at a predetermined interval with respect to the intermediate frame 61e so as to be positioned below the vertical center position of the entire handle.

  The second gripping portion 70b is provided so as to extend in the front-rear direction in front of and below the first gripping portion 70a, and is arranged in parallel with the upper glass 62 with the set interval. The rear end portion of the second gripping portion 70b is connected to the lower end portion of the first gripping portion 70a. The front end portion of the second gripping portion 70b is disposed at a predetermined interval with respect to the intermediate frame 61e and the front frame 61a. Here, the front end portion is disposed so as to be located in front of the front-rear center position of the intermediate frame 61e.

  Further, the second gripping portion 70b is disposed so as to be inclined in the front-rear and rear-high state. Note that the inclination angle of the second gripping portion can be arbitrarily set, and in the present embodiment, the second gripping portion and the intermediate frame are set to be parallel. And the front end part vicinity of the 2nd holding | grip part 70b is arrange | positioned so that it may be located above the operation lever 67a of the said front holding means 67. FIG.

  The second fixed portion 70d is provided so as to extend in the vertical direction in front and below the second gripping portion 70b, and the lower end portion is inclined to the left side of the upper end portion, that is, in a state of being located outside the door. Has been placed. The upper end portion of the second fixing portion 70b is connected to the front end portion of the second gripping portion 70b. The lower end portion of the second fixing portion 70b is fixed to the front and rear halfway portion of the intermediate frame 61e at the same front and rear position as the front end portion of the second gripping portion 70b.

  Thus, in the state where the first gripping portion 70a and the second gripping portion 70b are separated from the upper glass 62 by a set interval such that a palm can enter between the grips 70 in the left front of the driver's seat 41. The left and right positions are matched, the front and rear positions are rear and front, and the vertical positions are up and down.

  In addition, it is also possible to provide each of the first gripping portion and the second gripping portion separately on the cabin inner side surface of the door. Further, the vertical width of the first gripping portion and the front-rear width of the second gripping portion (the front-rear width of the handle) may be set appropriately according to the specifications of the cabin, the physique of the operator, and the like. Not what you want.

  Thus, by configuring the door 60 having the handle 70 on the inner surface of the cabin, the operator can grasp the handle 70 and open the door 60 as follows while the operator is seated inside the cabin 50. The turning operation from the closed state to the closed state and from the closed state to the open state can be performed.

  That is, when the door 60 is opened with respect to the entrance / exit of the cabin 50 and is closed, the operator first operates the operation lever of the rear holding means, and the door 60 is moved by the rear holding means. Release the hold state. Then, among the parts of the handle 70, the first gripping part 70a on the driver's seat 41 side is gripped, and the position gripped by the first gripping part 70a is moved to the second gripping part 70b side, and this is pulled inside the cabin 50. .

  Subsequently, when the operator rotates the door 60 to a predetermined rotation position, the operator grips the second grip 70b and pulls the second grip 70b further. Alternatively, the operator pulls the first gripping portion 70a while holding the first gripping portion 70a without holding the second gripping portion 70b. Thereby, the entrance / exit of the cabin 50 can be closed by the door 60, and the posture of the door 60 can be held in the closed state by the front holding means 67. Thus, the operator can perform a turning operation of the door 60 from the open state to the closed state.

  On the other hand, when the door 60 is closed with respect to the entrance / exit of the cabin 50 and is opened, the operator first operates the operation lever 67a of the front holding means 67 to operate the front holding means 67. The holding state of the door 60 is released, and the door 60 is pushed slightly to open. The operator grips the second gripping portion 70b on the open side of the door 60 and moves the position gripped by the second gripping portion 70b to the first gripping portion side of each part of the handle 70, while moving the door 60 to the cabin. Push outside 50.

  Subsequently, when the operator rotates the door 60 to a predetermined rotation position, the operator grips the first gripping portion 70a and further pushes the first gripping portion 70a. In addition, when the operator tries to get out of the entrance at the same time as the turning operation of the door 60, the force of the first gripping portion 70a and the second gripping portion 70b is not performed without performing the above-described operation. You can hold it in a position where it can be easily inserted and press it firmly. As a result, by opening the entrance / exit of the cabin 50 and rotating it to the rear side of the left side surface portion of the cabin 50, the posture can be held in the open state by the rear holding means. Thus, the operator can perform a turning operation of the door 60 from the closed state to the open state.

  As described above, the turning work vehicle 1 according to an embodiment of the present invention includes the turntable 31 that is turnably provided on the traveling device 10, and the cabin 50 provided on the turntable 31. A front side of a driver's seat 41 disposed inside the cabin 50 has a door 60 that is pivotable rearward about a vertical axis on the side surface of the cabin 50, A handle 70 is provided on the inner surface, and the handle 70 is disposed on the driver's seat 41 side and extends in the vertical direction. The handle 70a is disposed on the open side of the door 60 and extends in the front-rear direction. And a second gripping portion 70b.

  Thus, the operator can appropriately hold the first gripping portion 70a or the second gripping portion 70b of the handle 70 according to the rotation position of the door 60 to perform the rotation operation of the door 60. Therefore, the door 60 can be easily and smoothly rotated to the desired rotation position in a state where the operator is inside the cabin 50, particularly in a state where the driver is seated on the driver's seat 41.

  Further, in the present embodiment, the handle 70 is installed between the upper part of the intermediate frame 61e and the upper and lower middle parts of the rear frame 61b in the door frame 61 of the door 60, so that reinforcement between these frames is achieved. Therefore, the rigidity is improved. In addition, by arranging the handle 70 at a position that does not block the driver's field of view, the upper part of the front frame 61a and the upper part of the rear frame 61b among the in-frame spaces surrounded by the frames of the door 60, The upper space surrounded by the upper frame 61c and the intermediate frame 61e is made large to ensure the driver's field of view.

  The turning work vehicle 1 is also configured to arrange the handle 70 at the same height as the driver seat 41.

  Accordingly, the first gripping portion 70a or the second gripping portion 70b can be easily gripped while the operator is seated on the driver's seat 41.

  The turning work vehicle 1 is also configured to dispose the second gripping portion 70b below the first gripping portion 70a.

  Accordingly, when the door 60 is rotated, the operator can grip an appropriate gripping portion of the first gripping portion 70a and the second gripping portion 70b according to the rotation position of the door 60.

  The turning work vehicle 1 is also configured so that the second gripping portion 70b is inclined in a front-rear and rear-high state.

  Therefore, the second grip 70b can be easily gripped without bending the wrist while the operator is seated on the driver's seat 41.

  The turning work vehicle 1 is also configured so that the second gripping portion 70b is provided continuously to the first gripping portion 70a, and the first gripping portion 70a and the second gripping portion 70b are integrated. .

  Therefore, the operator can easily change the first grip 70a and the second grip 70b. Further, the handle 70 can be configured easily.

The left view which showed the whole structure of the turning working vehicle which concerns on one Embodiment of this invention. The top view which showed the structure of the cabin of the state which rotated the door back with respect to the entrance / exit. The right view which showed the structure of the door. The front view which showed the structure of the door. The top view which showed the structure of the door.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Traveling device 31 Swivel base 41 Driver's seat 50 Cabin 60 Door 70 Handle 70a 1st holding part 70b 2nd holding part

Claims (5)

A swivel provided on the traveling device so as to be able to swivel;
A cabin provided on the swivel,
A turning work vehicle having a door that is pivotable rearward around a vertical axis in a side surface portion of the cabin at a front side of a driver seat disposed inside the cabin,
A handle is provided on the inner side of the cabin of the door,
In the handle,
A first grip portion disposed on the driver's seat side and extending in the vertical direction;
A turning work vehicle having a second grip portion disposed on the open side of the door and extending in the front-rear direction.   The turning work vehicle according to claim 1, wherein the handle is arranged at the same height as the driver seat.   The turning work vehicle according to claim 1 or 2, wherein the second grip portion is disposed below the first grip portion.   The turning work vehicle according to any one of claims 1 to 3, wherein the second gripping portion is disposed so as to be inclined in a front-rear and rear-rear shape.   The said 2nd holding | grip part is continuously provided in a said 1st holding | grip part, The said 1st holding | grip part and a said 2nd holding | grip part are comprised integrally, The structure as described in any one of Claims 1-4. Swivel work vehicle.

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