JP4423154B2 - Thresher - Google Patents

Description

  In the present invention, the upper structure provided with the handling cylinder of the threshing machine body is oriented in the front-rear direction of the threshing machine body located on the opposite side of the handling mouth side with respect to the lower structure provided with the receiving net. The present invention relates to a threshing machine that is connected to the upper structure so as to be swingable up and down around an axis, and is provided with a handling chamber upper lid that can swing up and down up and down.

  Conventionally, as the threshing machine, for example, as disclosed in Patent Document 1, the upper case 10 (corresponding to the upper structure) can swing open and close around the axis X1, and the lower case 9 (corresponding to the lower structure). And a handling cylinder cover 11 (corresponding to an upper lid of the handling chamber) that can be pivoted up and down with respect to the upper case 10 around the axis X1 has been developed.

  This type of threshing machine is used to handle the upper part of the handling chamber such as replacing the cutting blade by raising and opening the upper part of the handling chamber so that the upper structure can be raised and opened to perform maintenance on the handling cylinder and the receiving net. The upper structure and the upper lid of the handling chamber can be raised and opened so that maintenance between the cylinders can be performed.

  In addition, the threshing machine is provided with a gas spring 19 supported by the lower case 9 and the barrel cover 11, and the gas spring 19 provides a lifting assist force for the upper case 10.

JP 11-275934 A (paragraphs [0012]-[0015], FIGS. 4 and 5)

  In the above-described Patent Document 1, the gas spring 19 as a spring is supported by the lower case 9 and the barrel cover 11, but when the upper case 10 is opened, the engagement bar of the upper case 10 is opened. Since the upper case 10 and the barrel cover 11 are connected together by the connecting action of the hook 21 engaged with the member 22 and swing together, the gas spring 19 provides a lifting assist force for the upper case 10.

  Therefore, when this conventional technique is adopted, when the upper cover is opened, the spring energizing force is set so that the spring exerts a lifting assist force with no excess or deficiency when the handling chamber upper lid is opened. In addition to the load of the upper lid of the chamber, the load of the upper structure is also applied, so that the lifting assistance by the spring is likely to be insufficient.

  An object of the present invention is to provide a threshing machine capable of obtaining appropriate force lifting assistance when either the upper structure or the upper lid of the handling chamber is opened.

In this 1st invention, the upper structure provided with the handling cylinder of the threshing machine body is located on the opposite side to the handling mouth side with respect to the lower structure provided with the receiving net. It is connected to the threshing machine body so that it can swing up and down around the axis of the front and rear,
In the threshing machine in which the upper lid of the upper structure is provided with a top and bottom swingably opening and closing,
The spring for the upper structure to impart increased swinging operation force to the upper structure, fitted with the lower structure in a state that imparts acts on the upper structure in the reaction force member,
Said threshing chamber threshing chamber spring for the upper lid which imparts increased swinging operation force to the top cover, and mounting the lower structure in a state that imparts act on the threshing chamber lid in the reaction force member,
A check unit that is switchable between a check state that disables unlocking of the lock body that fixes the upper structure in the lowered closed state and a check release state that permits unlocking of the lock body; When the upper cover is opened, the check means is switched to the check state, and when the upper cover is closed, the check means is linked to the handling chamber upper cover so that the check means is switched to the check release state. I'm allowed .

  That is, when the upper structure is opened, the upper structure spring applies an upward swing operation force to the upper structure. At this time, the upper spring for the upper chamber is applied to the upper lid of the upper chamber and the upper lid of the upper chamber with respect to the upper chamber, thereby applying an upward swing operation force to the upper chamber. The upper structure can be lifted and released while the lifting and swinging operation force by both the spring and the spring for the handling chamber upper lid is lifted and used as an auxiliary force.

  When opening the upper cover of the chamber, the spring for the upper chamber applies an upward swing operation force to the upper lid of the chamber. At this time, the upper structure spring does not rise and the upper structure spring does not move against the upper chamber lid. Thus, the handling chamber upper lid can be lifted and opened while the raising / lowering operation force of only the handling chamber upper lid spring out of the handling chamber upper lid spring and the upper structure spring is used as a lifting assist force.

  As a result, if the urging force of the upper structure spring and the handling chamber upper cover spring is appropriately set, when the upper structure is opened, a lifting assist force that is not excessive or deficient by the upward swing operation force of both springs is provided. When opening the handling chamber upper lid while being applied, the lifting operation can be performed while applying a lifting assist force that is not excessive or insufficient by the spring for the handling chamber upper lid.

  Therefore, according to the first aspect of the present invention, there is no excess or deficiency in the upper structure or the handling chamber upper lid when the maintenance work is performed with the upper structure opened or when the maintenance operation is performed with the handling chamber upper lid opened. Lifting assisting force is applied and it can be opened easily and at an appropriate speed.

In other words, when the upper lid of the chamber is opened, if the body touches the unlocking tool, the upper structure will be lifted from the closed state due to the upper structure spring if the upper structure is unlocked. There is. In the first aspect of the invention, when the upper cover of the chamber is opened, the restraining means switches to the restrained state for linking with the upper lid of the chamber, thereby disabling the unlocking of the lock body. Even if the tool is touched, the upper structure is not released from the closing lock by the lock body, and the upper structure is not lifted.

Therefore, according to the first aspect of the present invention, even when the upper structure spring is provided, the lock structure is not released and the upper structure is not lifted when performing maintenance work by opening the upper lid of the chamber. You can work while.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, there is a handling chamber 1 provided in the upper part of the front end side in the threshing machine body, a handling cylinder 2 provided in the handling chamber 1 so as to be able to be driven and rotated around an axis center facing the threshing machine body. The threshing part D, the sorting chamber 10 provided in the lower part of the threshing machine body, the swing sorting device 11 provided to be driven at the upper part of the sorting chamber 10, and the lower end of the starting end portion of the swing sorting device 11. The sorting section S having the tang 12 and the like, the No. 1 screw conveyor 20, the No. 2 screw conveyor 21 provided in the bottom direction of the sorting chamber 10 in the longitudinal direction of the threshing machine, and the rear of the handling chamber 1 in the threshing machine body The waste straw conveying device 22 is provided to constitute a combine threshing machine.

  This threshing machine is for harvesting rice, wheat, and the like, and the threshing section D is configured such that the threshing feed chain 3 provided on the laterally outer side of the threshing machine body K is provided with the threshing feed chain 3 so that the stock side of the harvested cereal rice cake The threshing machine body K is sandwiched and conveyed on the rear side of the threshing machine body along the handling port 4 (see FIG. 3), and the tip side of the harvested cereal rice cake is inserted into the handling chamber 1 from the handling port 4 and the handling cylinder 2 The threshing process is performed by the receiving net 5 located below the handling cylinder 2, and the threshing waste straw is carried out of the handling chamber 1 from the dust feed port 6 located at the rear of the handling chamber 1 by the threshing feed chain 3. In the handling chamber 1, the threshing process is performed while cutting the cut straw by the straw cutting blade 7 (see FIG. 3) located in the upper part of the handling chamber. The threshing waste straw from the threshing feed chain 3 is further transported to the rear side of the threshing machine body by the waste straw transporting apparatus 22 and is discharged out of the threshing machine body from the draining outlet 23 located at the rear part of the threshing machine body.

  The sorting unit S receives the threshing processed material dropped from the handling chamber 1 through the receiving net 5 at the start end side of the swing sorting device 11 and conveys the threshing processing product 11 to the rear side of the threshing machine body by the swing sorting device 11. By the sorting action by the device 11 and the sorting wind supplied by the Kara 12 in the rear direction of the threshing machine, the first and second processed materials such as fine grains and the dust such as straw scraps are sorted. The second processed material is dropped from the rocking sorter 11 and the dust is sucked together with the sorting wind by the dust exhaust fan 13 located above the rear part of the rocking sorter 11 and discharged out of the threshing machine.

  The first processed product from the sorting unit S is received by the first screw conveyor 20, transported in the lateral direction of the threshing machine body, and carried out to the lateral outside of the threshing machine body. The second processed product from the sorting unit S is received by the second screw conveyor 21, transported in the lateral direction of the threshing machine body, and carried out to the lateral outside of the threshing machine body. The processed material from the No. 2 screw conveyor 21 is pumped by a lifting device 24 connected to the No. 2 screw conveyor 21 to an inlet (not shown) on the side wall of the threshing machine body. It is returned to the starting end side of the swing sorting device 11 so as to be put in and sorted again.

  As shown in FIGS. 2, 3, 6, etc., the threshing machine body K includes a front machine wall 31 having the cereal supply port 8 of the handling chamber 1, a rear machine wall 32 having the waste outlet outlet 23, and the handling machine. A lower structure 30 including a left lateral machine wall 33 having a mouth 4, a right lateral machine wall 34 having the inlet, and the like, a handling room front wall 41 that forms the handling room 1, a handling room rear wall 42, The upper structure 40 provided with the handling chamber lateral wall 43 and the like, and the handling chamber upper cover 50 provided in the upper structure 40 are provided. On the rear side of the threshing machine body of the member constituting the handling chamber upper lid 50, there is provided a portion that protrudes to the rear side of the threshing machine body from the handling chamber 1 and covers the upper side of the waste straw conveying device 22.

  The handling cylinder 2 is rotatably supported by the handling chamber front wall 41 and the handling chamber rear wall 42 of the upper structure 40 via a handling cylinder support shaft 2a attached to the handling cylinder 2 so as to be rotatable together. . The receiving net 5 is supported by support portions (not shown) provided inside the front machine wall 31 and the left side machine wall 33 of the lower structure 30.

  As shown in FIG. 3 and the like, the lower structure 30 and the upper structure 40 of the threshing machine body K are configured as separate structures, and connecting arm portions 44 provided on the front and rear sides of the upper structure 40 are provided. The support cylinder part 35 located at the upper end of the lower structure 30 can be freely rotated via a support shaft 45 arranged in parallel to the handle rotation axis on the opposite side to the handle 4 side with respect to the handle 2. It is connected to.

  As a result, the upper structure 40 swings up and down with respect to the lower structure 30 around the shaft core 45a that is the shaft core of the support shaft 45 and is parallel to the barrel rotation shaft core. It can be operated dynamically. Then, by swinging the upper structure 40 up and down with respect to the lower structure 30, the upper structure 40 has an end 41a of the front wall 41 of the chamber as shown in FIG. In a state in which the end 42a of the rear chamber wall 42 is in contact with and supported by the support wall 34a provided in the right side machine wall 34 as shown in FIG. In addition, the handling cylinder 2 approaches the receiving net 5 and the threshing operation by the handling cylinder 2 and the receiving net 5 is possible, and the threshing work is closed in a closed state, as shown in FIG. The chamber rear wall 42 is in a state of being lifted and separated from the support wall portions 31a and 34a, and is switched to a lifted open state for maintenance work in which the space between the handling cylinder 2 and the receiving net 5 is open. Yes.

  As shown in FIG. 3, a pair of front and rear connecting portions 51 provided on the lateral end side of the handling chamber upper lid 50 are rotatably connected to the support shaft 45, and the handling chamber upper lid 50 is composed of an upper structure. The upper structure 40 and the lower structure 30 can be swung up and down around the same shaft core 45a as the shaft 45a swinging up and down. Then, by swinging the handling chamber upper lid 50 up and down with respect to the upper structure 40, the handling chamber upper lid 50 is formed between the handling chamber front wall 41 and the handling chamber rear wall 42 of the handling chamber 1 as shown in FIG. 4. In the meantime, it is switched between an upwardly opened state for maintenance work in which the opening 9 upwardly facing the threshing machine is opened and a lowered closed state for threshing work in which the opening 9 is closed as shown in FIG. When the handling chamber upper lid 50 and the upper structure 40 are connected by a lid locking mechanism 60 provided between the handling chamber upper lid 50 and the upper structure 40, the upper structure 40 swings up and down with respect to the lower structure 30. Then, the handling chamber upper lid 50 swings up and down with respect to the lower structure 30 together with the upper structure 40.

As shown in FIGS. 2 and 3, the lid lock mechanism 60 includes a lock rod 62 fixed to the handling chamber lateral wall 43 of the upper structure 40 via an attachment member 61, and a fulcrum pin 63 inside the handling chamber upper lid 50. And a hook 64 that is swingably connected via the hook 64.
That is, the lid lock lever 66 extending from the hook 64 and projecting from the penetrating lever hole 65 of the handling chamber upper lid 50 to the outside of the handling chamber upper lid 50 is swung around the axis of the fulcrum pin 63. By operating, the hook 64 swings around the axis of the fulcrum pin 63 and engages / disengages with the lock rod 62. When the hook 64 engages with the lock rod 62, the lid lock The mechanism 60 is in a locked state so that the upper cover 50 is connected to the upper structure 40 via the hook 64 and fixed in the lowered closed state. When the hook 64 is disengaged from the lock rod 62, the lid lock mechanism 60 is unlocked so as to allow the handling chamber upper lid 50 to be lifted and released.

As shown in FIG. 2, a structure locking mechanism 70 equipped with a lock body 71 is provided on the front outer side and the rear outer side of the handling chamber 1.
As shown in FIG. 3, the front structure lock mechanism 70 includes a hook-shaped lock body 71 that is swingably supported on the outer surface side of the front chamber wall 41 via a fulcrum pin 72, and the lock body 71. And a lock pin 75 fixed to the support wall portion 31a of the front machine wall 31 via a pin support 74.

  That is, when the lock body 71 is swung around the axis of the fulcrum pin 72 by the lock spring 73 and the hook portion 71a of the lock body 71 is engaged with the lock pin 75, the structure lock mechanism 70 is moved to the front chamber wall 41. Is connected to the front machine wall 31 via the lock body 71, so that the upper structure 40 is locked so as to be fixed in the lowered closed state. A lock release lever 77 extending from the end of the lock body 71 and protruding from the through lever hole 76 of the handling chamber lateral wall 43 of the upper structure 40 to the lateral outer side of the upper structure 40 is provided around the axis of the fulcrum pin 72. When the lock body 71 is swung against the lock spring 73 and the lock body 71 is swung around the axis of the fulcrum pin 72, and the hook portion 71 a of the lock body 71 is detached from the lock pin 75, the structure lock mechanism 70 is Then, the unlocked state is set to allow the upper structure 40 to be lifted and released.

  As shown in FIG. 6, the rear structure lock mechanism 70 has a lock body 71 supported by the rear chamber wall 42 and a lock pin 75 supported by the support wall 34 a of the left horizontal machine wall 34. However, except for this point, the structure is similar to the structure lock mechanism 70 on the front side, and is locked by the rocking operation of the lock body 71 by the lock spring 73. Thus, the lock release state is brought about by the swinging operation of the lock body 71 by the lock release lever 77.

As shown in FIG. 2, a restraining mechanism 80 equipped with pin-shaped restraining means 81 is provided on the front outer side and the rear outer side of the handling chamber 1.
As shown in FIG. 3, the front side check mechanism 80 includes the check unit 81 slidably supported in a guide slot 82 provided on the outer surface side of the front chamber wall 41, and one end side connected to the check unit 81. The other end side includes a linking means 84 formed of a wire cable connected to the cable support portion 83 of the handling chamber upper lid 50.

The linkage means 84 links the check means 81 and the handling chamber upper lid 50 as follows.
That is, as shown in FIG. 4, as the handling chamber upper lid 50 is lifted and swung with respect to the upper structure 40, the restraining means 81 is used as a guide slot for the pulling operation of the linking means 84 by the handling chamber upper lid 50. 82, the handling chamber upper lid 50 is in the upwardly open state, and the subsequent pulling operation by the linking means 84 and the elastic restoring force exerted by the stretching operation of the spring 85 provided in the linking means 84 In order to prevent the lock body 71 from coming off the lock pin 75, the check means 81 abuts between the hook portion 71 a of the lock body 71 and the fulcrum pin 75 from the lower side of the threshing machine body. On the other hand, the check means 81 and the handling chamber upper lid 50 are linked so as to be in the check state in which the stop action is performed. As shown in FIG. 3, as the handling chamber upper lid 50 is lowered and swung with respect to the upper structure 40, the restraining means 81 is moved along the guide long hole 82 for the loosening operation of the associated means 84. When the upper cover 50 is moved downward and closed, the restraining means 81 is separated from the lock body 71, and the restraining means 81 and the restraining means 81 are released so as to allow the lock body 71 to come off the lock pin 75. The room top lid 50 is linked.

  As a result, when the handling chamber upper lid 50 is raised and opened, the front check mechanism 80 stops the check means 81 against the lock body 71 so that the front lock body 71 cannot be unlocked. When the operation chamber upper lid 50 is lowered and closed, the front side check mechanism 80 releases the stop action of the check means 81 on the lock body 71 and allows the front side lock body 71 to be unlocked. It becomes a check release state.

  The rear side check mechanism 80 is different from the front side check mechanism 80 in that the check means 81 is slidably supported by the guide slot in the rear wall 42 of the handling chamber. It is configured in the same manner as the check mechanism 80, and when the handling chamber upper lid 50 is in an ascending open state, the check means 81 is stopped against the lock body 71, and the rear lock body 71 cannot be unlocked. When the handling chamber upper lid 50 is lowered and closed, the stop action of the restraining means 81 on the lock body 71 is released and the rear side lock body 71 is allowed to be unlocked. It becomes a release state.

As shown in FIG. 3, an upper structure spring 90 is provided on the front outer side of the handling chamber 1, and a handling chamber upper cover spring 91 is provided on the rear outer side of the handling chamber 1 as shown in FIG. 6.
As shown in FIG. 3, the upper structure spring 90 has one end side supported by the upper structure 40 and the other end side supported by a spring support 92 fixed to the support wall portion 31 a of the front machine wall 31. It is comprised by the gas spring with which it attached to.

  As shown in FIG. 6, the handling chamber upper lid spring 91 has one end side supported by the handling chamber upper lid 50 and the other end side supported by a spring support 92 fixed to the support wall portion 34 a of the right lateral wall 34. It is composed of an attached gas spring. The gas spring that constitutes the upper structure spring 90 and the gas spring that constitutes the handling chamber upper cover spring 91 are arranged such that the cylinder 93 and the rod 94, which are connected to each other in a telescopic manner, are on the side where the rod 94 exits the cylinder 93. In other words, the gas is filled in the cylinder so as to be biased toward the extension side.

  As a result, the upper structure spring 90 uses the front machine wall 31 of the lower structure 30 as a reaction force member to provide the upper structure 40 with an assisting force for upwardly swinging the upper structure 40. The handling chamber upper cover spring 91 uses the support wall 34a of the lower structure 30 as a reaction force member, and the handling chamber upper lid 50 has an auxiliary force for operating the handling chamber upper cover 50 to swing upward. Is to be granted.

  That is, when performing maintenance on the handling cylinder 2 and the receiving net 5, the lower structure of the upper structure 40 by the lock body 71 of the front and rear structure lock mechanism 70 by swinging the front and rear lock release levers 77 upward. The closing lock for 30 is released, and thereafter, the front and rear lock release levers 77 are further raised. Then, each lock release lever 77 abuts against the handling chamber lateral wall 43 in the through lever hole 76 of the handling chamber lateral wall 43 and lifts the upper structure 40, and the upper structure 40 is lifted and opened as shown in FIG. In this state, the space between the receiving net 5 and the handling cylinder 2 is opened, and maintenance work can be performed from the handling port 4 and the cereal supply port 8. At this time, the upper structure spring 90 applies an upward swing operation force to the upper structure 40, and the handling chamber upper cover spring 91 lifts and swings with respect to the handling chamber upper cover 50 that rises together with the upper structure 40. The upper structure 40 and the handling chamber upper lid 50 can be easily lifted while applying an operating force and raising the lifting swing operating force by the two springs 90 and 91 as an auxiliary force.

When maintenance is performed between the handling chamber upper lid 50 and the handling cylinder 2 such as replacement of the cutting blade 7, the lid locking lever 66 is swung upward and the handling chamber upper lid 50 is locked by the hook 64 of the lid locking mechanism 60. The closing lock on the upper structure 40 is released, and thereafter, the lid lock lever 66 is further raised. Then, the lid lock lever 66 comes into contact with the handling chamber upper lid 50 in the penetrating lever hole 65 of the handling chamber upper lid 50 and lifts the handling chamber upper lid 50, and the handling chamber upper lid 50 is lifted and opened as shown in FIG. Thus, the opening 9 of the handling chamber 1 is opened, and maintenance work can be performed from the opening 9. At this time, the handling chamber upper lid spring 91 imparts an upward swinging operating force to the handling chamber upper lid 50, and the handling chamber upper lid 50 can be easily raised while using the operating force as a lifting assist force.
At this time, when the handling chamber upper lid 50 is in the ascending open state, the linkage means 81 of the front and rear check mechanisms 80 acts so that both the front check means 81 and the rear check means 81 are in the check state. Disables unlocking. As a result, even if the body touches either the front or rear lock release lever 77, the closing lock of the upper structure 40 by the lock body 71 is not released, and the upper structure 40 is operated by the upper structure spring 90. Therefore, maintenance can be performed while avoiding floating from the lowered closed state.

Cross section of combine threshing machine Side view of combine thresher Front view with the upper structure and the upper lid of the handling chamber closed Front view with the upper lid of the chamber open Front view with the upper structure open Rear view with the upper structure and the upper lid of the handling chamber closed

Explanation of symbols

2 Handling cylinder 5 Receiving net 30 Lower structure 40 Upper structure 45a Shaft core 50 Handling chamber upper cover 71 Locking body 81 Checking means 90 Upper structure spring 91 Handling chamber upper cover spring

Claims (1)

The upper structure provided with the handling cylinder of the threshing machine body is positioned around the axis of the threshing machine body facing the front and rear of the lower structure provided with the receiving net, which is located on the opposite side of the handling mouth side with respect to the handling cylinder. It is connected to swing up and down freely,
In the upper structure, a threshing machine provided with a handling chamber upper lid that can swing up and down up and down,
The spring for the upper structure to impart increased swinging operation force to the upper structure, fitted with the lower structure in a state that imparts acts on the upper structure in the reaction force member,
Said threshing chamber threshing chamber spring for the upper lid which imparts increased swinging operation force to the top cover, and mounting the lower structure in a state of imparting effect to the threshing chamber lid in the reaction force member,
A check unit that is switchable between a check state that disables unlocking of the lock body that fixes the upper structure in the lowered closed state and a check release state that permits unlocking of the lock body; When the upper cover is opened, the check means is switched to the check state, and when the upper cover is closed, the check means is linked to the handling chamber upper cover so that the check means is switched to the check release state. threshing machine which had been.

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