JP2005036590A - Cabin door locking device for harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an unlocking device capable of performing both unlocking and closing operation of a door by operation of drawing a lever in a seated posture as a means for solving problems of lowering work efficiency and taking time to open/close the door because of interrupting work to perform release operation by changing the seated position and then shifting to the operation of drawing the door in order to release the lock of the fully opened door. <P>SOLUTION: A door locking device has a lever structure wherein a release lever 2 of the door 5 moved to the rear side part of a driver's seat 16 is drawn by one hand operation in the seated posture to release a locking device 1 first and then to continuously perform rotating operation of closing the door 5. A handle part 6 to be gripped is raised from the inner surface, and the tip of a plate 33 is connected to the locking device to form the release lever 2 of integrated structure. Since the locking device 1 is opposedly provided through a hinge 8, the vicinity of the center of a door frame 43 is held to catch the door 5 in a well-balanced manner. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a door lock device that enables a harvesting operation in a fully opened state in which a door equipped in a cabin of a harvesting machine is half-rotated, and a release device thereof.

  Conventionally, the side view from the window is limited in harvesting work on high ridges and retaining walls, and the position of the traveling device cannot be confirmed. Therefore, the door can be rotated halfway to open the side, and the cabin room can be easily serviced. In order to achieve this, there is a lock device that holds the position of the fully open door on the Glen tank side and the door side, respectively, and the door lock is released by operating the latched engagement lever in the pushing direction (for example, (See Patent Document 1.) In addition, in order to allow more ventilation in the harvesting operation and to secure a side view, a window provided on the door is rotated half a turn, and a gripping and locking device is provided that can fix both the opened and closed positions. Some cabin doors are configured (see, for example, Patent Document 2). However, since the former is different from the operation of pushing the unlocking lever by reaching behind the seat and the operation of closing the door, the seating posture is changed backward to perform the continuous door operation, so that it becomes unstable. The latter is a holding device provided on a window that opens and closes a grip-holding latch on the side of the driver's seat, but the present invention is for releasing a door locking device displaced backward while in a seated posture. The lever structure facilitates the pulling operation, and the door unlocking and closing operations are continuously performed without interrupting the operation.

JP 2000-43568 (Page 3, FIG. 4) JP 10-108527 A (page 1-2, FIG. 6)

  In the conventional operation to release the door holding device, the operation is interrupted because the door is closed after the lock device is released, or the seating posture is changed, resulting in a reduction in work efficiency. It takes time to open and close the door. As a means for solving such a problem, there is provided a door lock device having a release lever configuration that can be opened and closed by extending one hand backward while keeping a sitting posture.

  It is a configuration of a release lever that can be operated with one hand in the direction of pulling in the seated posture to release the door locking device held in the fully open position and continuously close the door.

  The locking device that holds the door behind the driver's seat is arranged, the operation of pulling the handle of the release lever is changed to the pushing direction to release the locking device, and the operation to close the door after that is the same operation direction The handle has a shape that can be used with

  The handle of the release lever is raised on the inner surface of the door, and the tip of the release lever is connected to the release rod of the lock device so that the operation of pulling the release lever can be easily performed.

  A lock device in which a door support member is formed by a plurality of hinges, a hook pin and a catcher are opposed to the cabin frame and the door around the hinge provided in the middle of the door, and both engage with each other in the fully open position. It is provided near the middle of the door height to prevent deformation such as twisting of the upper and lower ends of the door.

The door lock device of the present invention is a lock device that fully opens the door in order to expand the field of view of the cabin side with a harvesting machine or the like, and holds the door position. Grasp the handle while in the seated position and unlock it by pulling it in, and the door can be turned continuously to stop the operation, such as changing the seated position or temporarily stopping the cutting operation. Even if it is not, the above-described pulling operation can be easily performed with a release lever having a simple structure.

  When the harvesting machine in which the driver's seat 16 is composed of the cabin 12 is used to perform cutting work on a retaining wall or a high shore, the position of the traveling crawler 15 becomes difficult to visually recognize from the see-through window 17 provided on the door 5, and it becomes an obstacle. Abnormalities such as contact and crops remain. As a means for solving this problem, the door 5 is equipped with a locking device 1 that holds the door 5 in a fully opened state, and the crawler traveling device 15 at the foot is visually recognized by enlarging the side view of the body. However, the work method can be freely selected. The fully open state of the door 5 is also used for energy saving work that improves ventilation and does not require a cooling device even during long-time work in summer. This is a door lock device that holds the vicinity of the center of the door 5 in the fully open position and maintains the strength balance of the door frame 43 to prevent twisting or unlocking caused by turning of the machine body or turning.

  The locking device 1 of the door 5 with the rear side of the driver's seat 16 as the rotation center P is displaced to the rear end of the cabin frame 30 in the fully opened position, and the driver extends the hand backward while operating the release lever 2 while seated. However, because of the sitting posture, the operation of holding with one hand is restricted in the direction of pulling the lever, and in order to release the lock by rotating the handle or pushing the engagement lever as in the prior art, There is an inconvenience such as twisting the body backward from the posture, which causes a temporary interruption of work. The present invention enables unlocking by an operation of pulling the release lever 2 of the lock device 1 in the seated position, changing the operation direction to the pushing direction to release the lock, and opening and closing the door 5 Since it is utilized for the handle portion 6 to be used, it is in the form of a lock release mechanism that can continuously release the lock device 1 and close the door 5 with a simple lever structure without providing a separate release device, The details will be described in the following examples.

  The present invention will be described with reference to a cabin equipped with a combine. FIG. 7 is a right side view of the combine and will be described with reference to a plan view showing the main part of FIG. An engine room 20 is provided on the right side of the machine base 18 equipped with a pair of crawler traveling devices 15, and the cabin 12 in which the seat sheet 13 of the driver's seat 16 is superposed is placed on the engine room 20, and the grain after sorting is placed. The grain tank 21 that temporarily stores is connected to the rear, the vertical conveyor 22 for carrying out is erected at the rear end, and the grain discharging structure is configured such that the discharging auger 23 that moves up and down and swivels is fitted to the upper part. Is. On the other hand, a threshing part B is mounted on the left side of the machine base 18 and a reaping part C that can be moved up and down is mounted on the front side thereof. The cereals cut and cut by the cutting blade 26 while being raised at 25 are transferred to the feed chain 34 installed in the threshing section B by the transfer chain 27 and the lifting transfer device 19, and shed by the rotating barrel 39. It is the structure of the combine which temporarily stores the selected good grain in the said Glen tank 21.

  On the driver's seat 16 provided on the right front side of the machine base 18 is mounted a cabin 12 equipped with an operation lever 28 for controlling the reaping part C and the threshing part B, a traveling lever 29 for steering the combine, and the like. The door 5 that opens the right side of the cabin 12 facing the outside of the machine body is mounted, and a plurality of hinges 8 that form the support member 3 are provided at the rear of the cabin frame 30 and connected to the rear edge of the door frame 43. A freely supporting structure is provided to enable the half-rotating door 5 to be fully opened, and the catcher 11 of the locking device 1 provided in the front-rear direction with respect to the lower hinge 8 on which the supporting member 3 is formed. The door lock device is configured to hold the door 5 in the fully open position by setting the hook pin 10 to be engaged to the side to the cabin frame 30 side.

  FIG. 1 is a plan view showing the arrangement of the door lock device. The structure for holding the door in the fully open position will be described with reference to the sectional view of the release lever shown in FIG. The upper and lower sides of the door 5 are supported by a hinge 8, which is an opening / closing range of 180 degrees that makes a half rotation in the direction of the arrow B with this as a rotation center P. The door frame 43 is spaced forward from the rotation center P. A catcher 11 is provided, and when the door 5 is in a fully opened state illustrated by a chain line, a hook pin 10 to be engaged with the catcher 11 protrudes from the rear end of the cabin frame 30 and is locked to the door 5 side facing the position. The apparatus 1 is arranged.

  The movement of the lock device 1 that holds the door 5 in the fully open position by rotating the catcher 11 in the rearward direction with the rotation center P interposed therebetween is performed along with the release lever 2 and the cabin frame. 30, which is displaced near the rear end of the door 30, is operated by pulling the handle 6, which is erected outward from the fully opened door 5, in the direction of the arrow B while being seated, together with the release rod 7 fixed to the header 31. The locking device 1 is released by pushing the plate 33 into the catcher 11 in the direction of the arrow D.

  The lever structure that unlocks the handle 6 by pulling the handle 6 is provided with a support holder 32 having the rear side as a rotation fulcrum with respect to the catcher 11 that is fully opened as shown by the chain line, and swings the release lever 2. By attaching the plate 33 to the header 31 with a connecting pin 35 having a gap and making the lever structure in which the catcher 11 and the release lever 2 are integrated, the handle portion 6 having a link shape is mounted. The link structure is configured such that the operating direction of the handle is changed to a push-in direction that can be unlocked.

  The handle 6 at the position of the chain line shown in FIG. 1 always stands on the outside of the door 5 and has a shape of a release lever 2 that makes it easy for a seated driver to reach back and pull in the direction of arrow B. In the initial stage of drawing, the catcher 11 is unlocked, and the handle portion 6 is configured so that the door 5 can be moved to a closing rotation by a pulling force that acts subsequently.

  Further, the hook pin 10 where the catcher 11 engages at the fully open position of the door 5 is located on the inner side of the rear end of the cabin frame 30 and the outer surface 36 of the glen tank 21 connected to the rear of the cabin 12 is connected to the door. The hook pin 10 that holds 5 is in a position where it does not interfere, and the door 5 is opened by 90 degrees so that the Glen tank 21 can be rotated or moved alone. The lock device 1 is arranged so as not to hinder the conventional maintenance inspection to be performed.

  FIG. 3 is a plan view of the release lever, and the structure of the locking device will be described using the sectional view of FIG. 2 together. The position shown in the figure is a state in which the locking device 1 is actuated by half-rotating the door 5. The catch case 45 is fitted between the inner plate 37 and the outer plate 38 of the door frame 43, and the header 31 connected to the internal catcher 11 is installed so as to protrude outward when the door 5 is opened, and compressed. The catch structure is biased outward by the spring 40.

  The release lever 2 connected to such a catch structure is attached by causing the support holder 32 fixed to the inner plate 37 of the door frame 43 to rotatably support the plate 33 portion connected to the handle portion 6 so that the tip of the plate 33 can be rotated. Is connected to the header 31 and the handle 6 of the integrated release lever 2 has a mounting structure for the release lever 2 that holds the door 5 in a fully upright position.

  Further, as shown in FIG. 1, an L-shaped mounting seat 42 is welded to a corner portion at the rear of the cabin frame 30, and the hook pin 10 is fixed so as to protrude, and the catcher 11 on the door 5 side rotates. The locking device 1 is in a locked state that engages with each other, and is held in a fully open position so that the outer plate 38 of the door 5 and the outside of the cabin frame 30 are parallel to each other, and does not project the door portion toward the outside of the machine body. It is a thing. Reference numeral 44 denotes a protective member for covering the periphery of the hook pin 10, which is formed of a compressible rubber material and acts as a buffer for the door 5 that opens and closes.

  In addition, the arrangement of the hinge portion that rotatably supports the door with the lock device will be described with the right side view of FIG. 7. The lock device 1 is provided on the door frame 43 side and the cabin frame 30 side with the hinge 8 interposed therebetween. In addition, the catcher 11 and the hook pin 10 are arranged at the same height as the hinge 8 so that the holding force of the door 5 directly acts on the hinge 8 portion having high rigidity. The middle position is maintained and the upper and lower strength balance is maintained, and the lock position 1 is arranged to prevent the door frame 43 from being twisted or deformed due to turning of the fuselage accompanying the direction change during the work. .

  FIG. 4 is a perspective view showing an example of the structure of the catcher. The outline of the internal structure will be explained using the sectional view of the main part of FIG. 5 and the sectional view of the release lever of FIG. Catch arms 47 a and 47 b that are symmetrical on the left and right are rotatably mounted on the rotation pin 46, and a semicircular groove is provided by the pressing force of the compression spring 48 provided between the catch arm 45 and the rotation. The catch arm 47 is configured to be biased in a direction in which the tip end portion of the catch claw 50 meets and to secure a gap where the open claw 51 approaches above the rotation pin 46.

  In the locked state where the catch arm 47 is engaged with the hook pin 10, the conical hook pin 10 is fitted into the catch portion 41 opened in the outer plate 38 of the door 5, and the catch arms 47 a and 47 b held by the hook are held. The locking device 1 is configured such that a catch claw 50 having a semicircular groove formed by pushing and spreading in the direction of arrow C is hooked on a step portion of the hook pin 10 and the door 5 side is held by the cabin frame 30.

  The unlocking procedure of the locking device 1 is as follows. As described above, by pulling the release lever 2, the header 31 of the catcher 11 is first pushed in and the release rod 7 moves in the direction of the arrow D, and the catch arms 47a, 47b. When the wedge-shaped release rod 7 enters the gap formed by the opening claws 51 facing each other, the tip catch portion 41 is expanded in the direction of the arrow C and detached from the hook pin 10 to release the door lock. is there.

  FIG. 6 is a perspective view of the cabin with the door fully opened. The sliding door type see-through window 17 is provided above the door 5 and the fitting window 53 is opened below the door 5 so that the space between the two windows is wide. The door frame 43 has a structure in which the door handle 56 and the lock release lever 2 shown in FIG. 1 and the hinge 8 that is rotatably supported are arranged substantially in parallel. Also, the locking device 1 is configured such that the rear door part is held close to the outer surface 36 of the Glen tank 21 in a fully opened state. Reference numeral 57 denotes a steering round handle provided on the seat 13.

  In this way, the door lock device that is fully open can be unlocked with the seated posture, and the door closing operation can be performed by a series of operations to pull the release lever, so that the door can be opened and closed freely during work. It is now possible to easily select a field of view that matches the working conditions.

  The catcher is unlocked at the initial stage of pulling the release lever, and the subsequent pulling force acts on the link-shaped handle to rotate the door in the closing direction. The door can be rotated without changing the direction, and a series of door operations to unlock the door can be performed easily.

  Since the door is opened in a half-opened state and the Glen tank is rotated or moved in a single unit, the lock device can be moved. There is an effect that can be implemented as before.

  Fully open position is maintained so that the outer panel of the door and the outside of the cabin frame are parallel, and the door part does not protrude toward the outside of the fuselage. It was easier to avoid collisions with side obstacles.

  The lock device that holds the fully opened door is placed at the same height as the hinge that supports the door so that it can rotate freely. This is a door lock device that prevents twisting of the door frame and deformation of the upper and lower ends.

  It is a lever structure that allows you to release the lock device that holds the half-open fully open door and to perform a series of operations to close the door in a maneuvered posture while seated, without requiring a separate electric motor or link mechanism. Unlocking and turning the door can be performed simultaneously by pulling the lever. Such a simplified lever structure can be applied to a construction work vehicle equipped with a cabin because the side view of a driver who works close to an irregular obstacle is enlarged.

It is the top view which cut the principal part of the door lock apparatus. It is sectional drawing of the release lever made into the locked state. It is a top view of a release lever. It is a perspective view which shows the structure example of a catcher. It is the top view which carried out the cross section of the principal part of a catcher. It is the perspective view which made the door the full open state. It is a right view of the combine equipped with the cabin. It is a principal part top view of the combine equipped with the cabin.

Explanation of symbols

B ... Threshing part C ... Cutting part P ... Turning center 1 ... Locking device 2 ... Release lever 3 ... Supporting member 5 ... Door 6 ... Handle part 7 ... Release rod 8 ... Hinge 10 · · Hook pin 11 · · Catcher 12 · · Cabin 16 · · Driver's seat 17 · · Perspective window 18 · · Machine base 20 · · Engine room 21 · · Glen tank 28 · · Operation lever 38 · · Travel lever 30 · · Cabin Frame 31 ·· Header 32 · · Support holder 33 · · Plate 35 · · Connection pin 36 · · Outer surface 37 · · Inner plate 38 · · Outer plate 40 · · Spring 41 · · Catch portion 42 · · Mounting seat 43 ·・ Door frame 45 ・ ・ Catch case 46 ・ ・ Rotating pin 47 ・ ・ Catch arm 48 ・ ・ Compression spring 50 ・ ・ Catch claw 51 ・ ・ Open claw 53 ・ ・ Fitting window 55 ・ ・ Door frame 56 ・ ・ Door handle Le 57 ... round handle
Rotating direction in which the arrow a is half-turned
Arrow b. Direction to pull the handle
The direction in which the arrow c catch part opens
Arrow D ... Direction in which release rod is pushed

Claims (3)

A cabin door opening / closing device equipped with a lock device that holds the fully open position with a door that rotates halfway around the rear of the driver's seat, and holds the door (5) behind the driver's seat (16) The locking device (1) is disposed, and by releasing the locking device (1) by pulling the release lever (2) with the door (5) fully opened, the door (
5) A cabin door lock device for a harvesting machine, characterized in that the release lever (2) is configured to continuously perform the closing operation.   The handle (6) of the release lever (2) is erected on the inner surface of the door (5), and the tip of the release lever (2) is connected to the locking device (1). Harvester cabin door lock device.   The locking device (1) for holding the door (5) that is fully opened and the hinge (8) that is rotatably supported are arranged at an equal height. Harvester cabin door lock device.

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