JPS5836312A - Reamer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] This shield is based on the detection results of a ground-type cutting height detection sensor attached to the cutting machine that can be driven up and down by the driving machine.
In order to automatically maintain the reaping part within a set height range,
A mechanism is provided for mechanically linking the sensor and a switching valve of a hydraulic cylinder for driving up and down the reaping section, and a mechanism is provided for mechanically linking the switching valve with the switching valve and the manual operating tool, and the operating tool is connected to the operating tool. A first position at one end of the path (when located, it contacts and prevents the operation from the reaping part raised position to the reaping part raised stop position side linked to the sensor of the switching valve, and the operation movement path is lower than the first position) When it is located at the other end side @2 position, it comes into contact with and prevents the operation from the reaping part lifting stop and position linked to the sensor of the +714I valve to the reaping part lowering position side, and is more operable than the 112 position. The present invention relates to a reaper that is provided with a linkage device m'' that allows operation in conjunction with a sensor of the switching valve when the reaper is positioned at the @3 position on the other end of the moving path.

In conventional reapers of this type, the reaping section could only be lowered by itself by placing the manual operating tool in the t-Sa position and operating the switching valve in conjunction with the sensor. When the sensor runs over a weed during work in the field and the cutting height becomes higher than the set range based on the weed, the cutting height cannot be returned to the set range. The drawback was that it lacked applicability to various conditions.

The present invention has an object to rationally eliminate such drawbacks.

In the reaping machine according to the present invention, the hand wJ
The value 4 when the operating tool is on the other end of the operation movement path than the above @3 position
When the switching valve is operated at the position, the member t-koku operating tool is interlocked with the sensor of the switching valve and prevents the operation sound from coming into contact with the cutting part Jf# from the lowering position to the lowering stop position.
4111s2. It is characterized in that it is provided with a fjK that releases the contact when it is located at the 111 position. In other words, by moving the manual operation J4 to the 114 position, the above contact is released through the contact prevention member. Since the switching valve can be operated to the lowered position with priority over the sensor, a relatively simple structural improvement of just providing an abutment prevention member t that operates in conjunction with the manual operating tool allows the manual operating tool to be activated during energized work. By setting the operating position to 113, the cutting height can be automatically maintained within the entire setting range, and it can be used for cropping in fields with weeds.
If the cutting height increases due to the sensor running over weeds, set manual operation A to the @4 position to move the cutting unit to that cutting height regardless of the sensor running over the weeds. It is necessary to lower the temperature so that it is within the set range.

Hereinafter, an embodiment of the present invention will be described based on FAIII.
, a pulling device +6), a clipper-type floor planning device 171, and a device for conveying and supplying the harvested soft culm to the grain exterminating device (1). In a certain combine harvester (an example of a reaping machine), the above-mentioned reaping height IK'!ii! ground-type cutting height sensor +1Ql'li is provided, and the above-mentioned reaping section 191 is set within a set height range based on the detection result of the sensor output. The sensor +B and the switching valve Iz of the reaping part (11 @movement i!# descending oil cylinder +111 (an example of a fluid pressure cylinder) are mechanically linked to automatically maintain At the same time, a manual imitation lever 1i41 (an example of both manual operation) that can be freely swung and operated is provided on the passenger car transport 1, and this manual operation lever shaft is linked to the switching valve 1121 @2 machines 1iQ ( 5).

As the sensor sounds and the height of the reaping section 191 above the ground changes, the front section thereof is used as a fulcrum (2).

A pair of left and right that each swings down separately! ! Earth body (10a).

(IQa) and this grounding body (10a).

(10m) pairs are provided in springs (10b) and (10t+) 1 for swinging and biasing in the direction of contact with the ground.

-1 in the figure shows that due to the swinging around the vertical axis IJiJll,
The working posture of placing and supporting the grounding body (10m), (10m) pair in the storage position and the first grounding body (10a), (10m)
The pair of sensors (10a1.
K is a sensor lifting rod that lifts and swings, and the mechanism that restricts it to both the above-mentioned postures is installed along the four oscillating axes of the lifting rod.
A concave mallet (1B') is formed to engage the lifting rod 0- in each of the above-mentioned postures, and the lifting rod a
A spring α- is provided to move and bias @ in the locking direction.
It is configured.

Sl is a wire and spring that automatically and reversibly swings the lifting rod 11- into the operating position in conjunction with the backward movement of the aircraft.

The hydraulic cylinder till is arranged in a floor plan area (
This is a single acting cylinder that raises sl:.

The aforementioned switching valve has a rising spool (11 Todoroki) and a descending spool (12B) that are biased toward one end of the movement path.
In addition to providing a swinging member (120) which can be operated by swinging (12B) and (12B) by swinging, the structure is i have been

When the rising spool (12mm 1 is located at one end of the moving route, the tank port m) is communicated only with the tank port m, and when the rising spool is located at one end of the moving route, the pump port (
Connect only cylinder port C to Pi in a half-open state,
When located at the other end of the moving path, pump port IPI K
The cylinder port 0 is communicated with the cylinder port 0 in a fully open state.

When the ifl&i lowering spool (12B) is located at one end of the moving route, it cuts off the communication between the tank port 10 and the cylinder port 10, and when the lowering spool (12B) is located at the middle of the moving route, it opens the communication path (12 m) between both ports ■ and to. Valve body (12D) that closes the
Open the throttle passage (12D) formed in the valve body (12D).
Senki port (1) via m+1yk.

By connecting 4a and being located at the other end of the movement route,
Fully open the valve body (1!D) to open both poles m,
It communicates 0.

The switching valve a has both spools (12 mm 1° (12 mm)
B) are both located at one end of the movement path, cutting off the pressure oil supply to the cylinder (111) and oil return, and reaping M.
h Stop raising and lowering III, and remove the raising spool (12 Todoroki 1)
By positioning it in the middle of the movement path, one set of reaping parts is slowly raised, and the lifting spool (12) is moved. l
By placing the spool at the other end of the l path, the floor plan section m is raised rapidly, and by placing the descending spool (1 piece) in the middle of the moving path, the floor plan section m is slowly lowered. By positioning the spool (12Ii) at the other end of the moving path, the reaping section program is rapidly lowered.

In the figure, - is a hydraulic pump.

The first linkage mechanism as H, the swing #I of the switching valve aZ
Spring c that swings and biases the h member (120) in the above example
2υ and switching valve q! In addition, a release wire (
2) Connect the other end of the inner wire to both of the grounding bodies (10m).
, (10a) are both swung upward beyond the position corresponding to the cutting height setting range, the inner wire of the release wire (■) is loosened and activated, and the grounding body (10m), (IQa
) when at least one of them swings downward below a position corresponding to the cutting height setting range, both the grounding bodies (IQa) v
c Long hole C! They are configured to be linked via j and a.

In the figure (2), the position of the outer wire end of the release wire υ is changed in the wire longitudinal direction to reach the set cutting height t-
This is a setting cutting height change operation lever that is fixed to the other part of the spring for biasing the swinging member (12B), and as the swinging operation is performed in the high cutting direction. This reduces the biasing force of the spring.

The above-mentioned 1112 linkage mechanism - consists of the member (2) which freely holds only the axis caK of the swinging member (C1) and the hand wJ.
It is constructed by providing a rod (2) for interlocking with the operating lever a4, and a contact interlocking member fixed for contact interlocking i4- of the attached bin I211K attached to the shaft 115 of the rotary member (to) 10.

When the lever is placed at the 1st position (Pl) K at one end of its operating swing path, the 1st generation butt connection ma material is inscribed on the 1st bottle 121 and the switching valve ■, that is, swings. Parts (120
) When the lever 4 is prevented from swinging from the rising position (goods) to the lifting stop position (N) linked to the sensor of the When it is located at the second position (PI) on the end side, it comes into contact with the bin and moves to the lowering position (2), which is linked to the sensor of the swinging member (120). 1llll of waves
t is blocked, and the marked bar a4 is at the II2 position (P
s) is located at II3 position (Pa) on the other end side of the operation rocking assistance path, and when it is 9, the contact with the busy is released and the rocking member (120) is rocked in conjunction with the sensor 1 field. It is permissible. - in the figure indicates an auxiliary manual operation lever Q4
1' to the second position (Pa), c3JJFi, resisting the urging by this spring ω! (Place the manual operation lever α41 in the 3rd position g (1
It is a spring ball held at m1.

When the lever I is operated at the fourth position (Pi) which is closer to the other end of the operating swing path than the third position (r@1), the lever I comes into contact with the bottle ■ and the swinging member (120) From the descending position (2) linked to the sensor scream J?# Descending stop ± position @
The lever I is the member that prevents the swinging toward the N side.
, @2, attached to the rotation wJ member in a state of releasing the contact when located at the third position (rl), (Ps), (Ps), and both the contact prevention members; cQ,
When the lever row is in the third position (Ps) K operating position, the swinging member is configured and the rotating member is placed in the position 1/(-1141 is 183rd position CP-). Then, insert the insertion/removal pin c13 which can be connected and released from the @h-.

[Brief explanation of the drawing]

The drawings illustrate one embodiment of the reaper according to the invention, and show a first
The figure is a side view of the main parts, Fig. 2 is a schematic diagram of the hydraulic system for lifting and lowering the main parts, Fig. 3 is an operation system diagram, Fig. 4 is an enlarged sectional view of the main parts, and Fig. 5 is a diagram of @4. V-vmtrr Zozu, @6 figure (a),
(b), (c), ni) M theory vA diagram by tq. 14T...Travelling machine, +1...Reaping section, I
-...Me U height detection sensor, 1111...
・・Fluid cylinder for elevating and lowering IJ, 11 To・・・Kirito valve, ・・Linkage mechanism, a・・・Manual operation tool, α・・・・1 Interlocking mechanism, (support)...Abutment prevention member. Agent Patent Attorney Kitamura Kai No. 6 Voluntary Procedure Amendment 1972++ 28E1 [1 1~+1llj' 1*Government
Hall 1 ・IG l'l's front bodice 1988 f1
No. l Name of the invention (ro, reaper) Relationship with the right-handed f'l with 4 supplements Patent Applicant's address No. 2, Chitsu Higashi, Naniwa-ku, Osaka-shi, Osaka Prefecture? 1 car (105)
Kubota Iron Works Co., Ltd. 1 Agent name +8+1971 Patent attorney 1: Osamu Kitamura
Correct t (Pg) J to "2nd position (P2) J.

Claims (1)

[Claims] The reaping section 1 is connected to the driving unit 141 with the drive lifting/lowering t2r function.
In order to automatically maintain the cutting height within the set height range based on the detection result of the ground-type cutting height detection sensor mounted on the cutting height sensor 111,
Switching valve a' for the + drive lifting fluid pressure cylinder till!
In addition to providing a mechanism α3 for mechanically linking the
When the operating concentric chrysanthemum is located at the first position (Fi) at one end of its operation movement path, the sensor tul VC4 of the first switching valve I is placed between the first switching valve Qz and the manual operating tool shaft.
The reaping section from the recommended reaping section raised position (6)! ! #Preventing the operation t-contact to the lowering stop position mNl side, and the above @1
The second position (P) is closer to the other end of the operation movement path than the position (Pl).
When the switch valve +I21 is located at 9, the switching valve +I21 is connected to the sensor I&111 to contact and prevent the operation from the 9-bed floor lifting stop position l1lI) to the reaping unit lowering position 0@, and Pfi) on the other end of the operation path! In the reaper, the manual operation tool shaft 4 is provided with a linkage mechanism that allows operation in conjunction with the sensor exposure of the switching valve ms when the manual operating tool shaft 4 is positioned at the II3 position (Ps). When the operating position is moved to the I14 position (P4) on the other end side of the operation movement path, the reaping S is linked to the sensor signal of the switching valve 1 from the lowering position ■.
The operating tool 1.41! I2, II3 position (Pl
), (Pl), and (I'l), the reaping machine is arranged to release the contact.