JPS5815691Y2 - power transmission device - Google Patents

Description

[Detailed description of the invention] The present invention is based on a power transmission device that drives, for example, the shell culm conveying part and cutting blade of a combine harvester, and incorporates an idling plate and a fitting plate provided on the same axis in the middle of power transmission, and springs. Regarding the improvement of a device that interlocks and rotates an idling plate and a Δ plate by interposing a clutch element such as a energized ball clutch, the idling plate is rotatably supported, and the mating plate is engaged and supported. The ball clutch is always supported on the same shaft at a constant interval, and a hole for inserting the ball clutch is provided in either the fitting plate or the free rotation plate, and the spring and slider for pushing out the ball clutch are inserted into the hole. and an engagement notch for engaging the ball clutch is opened in the other of the free rotation plate or the fitting plate, and a loose fitting notch into which the entire ball clutch can be inserted is formed in the engagement notch. The holes are opened on the same circumference and are closed by a slider when the ball clutch is moved to the loose fitting notch, and by keeping the relative distance between the loose fitting plate and the fitting plate substantially constant, the ball clutch is It is possible to prevent the clutch from escaping to the outside, etc., and it is possible to easily incorporate one or more arbitrary ball clutches by inserting a spring into the hole to force the ball clutch into the engagement notch. Compared to the conventional structure in which the rotation and fitting plates are crimped with a single spring, it is easier to handle for assembly and disassembly, and the ball clutch is inserted and supported in the hole between the engagement notch and the loose fitting notch. can be moved, the power disconnection operation of a plurality of ball clutches can be stably obtained, damage to the ball clutches and noise when the power is disconnected can be drastically reduced, and the said operation can be achieved by closing the hole with the slider. It is an object of the present invention to provide a power transmission device that further promotes the following and can be used safely.

An embodiment of the present invention will be described in detail below with reference to the drawings.

Figure 1 is a side view of the combine, Figure 2 is a plan view,
In the figure, 1 is a truck frame, 2 is a running roller, 3 is a machine base, 4 is a rotation fulcrum for rotatably attaching the machine base 3 to the truck frame 1, and 5 is a hydraulic pressure for raising and lowering the machine base 3. It is a cylinder.

Reference numeral 6 denotes a threshing section mounted in the center of the machine 3, which houses a handling barrel 7 and has a swing sorting section 8 below it.

A paddy receiver 9 is installed on the right side of the threshing section 6, and a lifting conveyor 11, which is connected to the first conveyor 10, is faced above the paddy receiver 9.

Reference numeral 12 denotes a reaping section provided in the folding section of the machine stand 3, which includes a reaping frame 13, a weed dividing board 14, culm lifting tines 15,
The threshing section 6 includes a cutting blade 16 and a culm conveyor 17.
The culm is formed so as to feed the culm to a feed chain 18 horizontally suspended on the left side of the culm.

19 is a straw cutting section provided at the rear of the machine 3;
It includes a pair of disc cutters 20.21, a straw removal chain 22 connected to the rear end of the feed chain 18 faces above the cutters 20.21, and an engine 23 is installed between the iron part 19 and the paddy holder 9. Equipped.

Reference numeral 24 denotes a boarding platform fixedly attached to the L/rack frame 1, which includes a driver's seat 25 and a driving operation section 26, side clutch levers 27, 27, and a working speed switching lever 28.
In addition, a traveling speed change lever 29, a lift lever 30, a length adjustment lever 31, etc. are provided nearby.

Furthermore, FIG. 3 is a drive system diagram of the above-mentioned combine harvester, in which numeral 32 is the counter shaft, and the output pulley 33
, the engine 2 via the belt 34 and the counter pulley 35.
The shaft 32 is connected to the output shaft 36 of No. 3.

Further, the counter shaft 3 is connected to the input main shaft 45 of the travel transmission 44 via a bevel gear 37° 38, a telescopic shaft 39, universal joints 40, 41, and bevel gears 42, 43.
The axle 46°4 that connects the two and protrudes from the transmission 44
Sprockets 47, 47 are pivotally supported on the rollers 6, and the sprockets 47, 47 are engaged with the running rollers 2, 2 to drive the crawlers 2, 2.

Furthermore, a hydraulic device 48 for operating the cylinder 5 is provided, and an output shaft 36 is connected to a drive shaft 52 of a hydraulic pump built in the device 48 via a pulley 49, 50 and a belt 51, and the elevating lever 30 is operated. By operating it, the reaping section 12 is removed together with the machine base 3 via the cylinder 5.
It is formed so that it can be moved up and down.

Reference numeral 53 denotes a manual threshing shaft, which connects the output shaft 36 to the shaft 53 via a pulley 54, a belt 55, 55, and pulleys 56,56.

Further, the shaft 53 is connected to the handling cylinder shaft 62 via bevel gears 57, 58, pulleys 59, 59, belts 60, 60, and pulleys 61, 61, so as to drive the handling cylinder 7.

The feed chain drive shaft 65 is connected to the handling barrel shaft 62 via a pair of worm gears 63, 64, and the feed chain 18 is stretched via each sprocket 66, 67, 68, 69, and each sprocket (70, 71) A straw removal chain 22 is stretched between the sprocket) 68.7
Straw removal chain 22 via 0 and bevel gears 72 and 73
is connected to the feed chain 18.

74 is a suction fan shaft to which a suction fan 74a for discharging dust generated by threshing to the rear of the machine is attached; 75 is a swinging shaft that drives the swinging sorting section 8; 76° and 77 are the cutters 2
0.21 is attached to the cutter shaft, and the pulley 78.7
9.80.81 and each of the aforementioned shafts 74 via the belt 82.
, 75, 77 are connected to the human-powered threshing shaft 53.

The cutter shafts 76, 77 are connected via gears 83, 84, and are also connected to gears 85, 86 and the crankshaft 8.
The pulley 80 is connected to the swing shaft 75 via the shaft 7.

88 is the first conveyor shaft to which the first conveyor 10 is attached to take out the fine grains, 89 is the second conveyor shaft to which the second conveyor 90 is attached to take out the grains mixed with straw, etc., and 91 is the shaft to which the oscillating sorting section 8 is connected to the sorting wind. The shafts 88, 89, 91 are connected to the manual threshing shaft 53 via pulleys 92, 93, 94, 95 and a belt 96.

In addition, the first conveyor shaft 88 is connected to the lifting conveyor shaft 102 to which the lifting conveyor 11 is attached via sprockets 97, 98, chain 99, and bevel gears 100, 101, and each conveyor 10, 11 is interlocked and connected. At the same time, a No. 2 thrower fan 103 is connected to the feed end of the No. 2 conveyor 90, and the grains mixed with straw taken out from the conveyor 90 are transported above the handling drum 7 by the fan 103. Form to reduce.

104 is a reaping input shaft, and a low speed pulley 10
5, 106 and belt 107 or high speed pulley 1
08. The shaft 104 is connected to the fan shaft 91 via either the L or L of the belt 110.

In addition, a first shaft 111 and a second shaft 112 are provided to drive the grain culm conveyor 17, and each gear 113,
The first shaft 111 is connected to the input shaft 104 through 114, 115° 116, and the bell gear 1
17° Each shaft 1 through 118 and 119, 120
11. Concatenate 112.

121 is a vertical conveyance chain, which includes sprockets 122,
Bevel gears 123, 124, universal joint 12 for adjusting length and shortness
5. Reduction bevel gears 126, 127 and 128, 129
The chain 121 is connected to the first shaft 111 via.

Also, gears 116, 130, 131, crank rod 1
32, the cutting blade 16 is connected to the first shaft 111 via a swing arm 133.

134 is the upper conveyance left chain and sprocket) 13
5 and the chain 134 thereof is connected to the second shaft 112 via the bevel gears 136, 137, and the lower conveying left chain 138 is connected to the second shaft 112 via the sprocket 139 and the bevel gears 136, 137, and A scraping star wheel 141 is coaxially supported with a sprocket 140 on which the chain 138 is stretched,
Additionally, the auxiliary scraping belt 142 is connected.

143 is the upper conveyance right chain, and the sprocket 14
4. Speed-up bevel gears 145.146 and 147.148
, the chain 14 via bevel gears 149, 150.
3 to the second shaft 112, and connect the lower conveying layer chain 151 to the second shaft 112 with the sprocket 1.
52 and the sprocket 1 connected via the bevel gears 149, 150 and tensioning the chain 151.
A raking star wheel 154 is coaxially supported with the raking star wheel 53, and an auxiliary raking belt 155 is connected thereto once a month.

As described above, the grain culm conveyor 17 has each chain 121
．． 134, 138, 143, 151, and includes a star foil 141, 154 and a scraping belt 142, 155.

156 is a zero-raising drive shaft that operates the grain culm lifting tine 15, and reduction bevel gears 157, 158 and 1
The shaft 156 is connected to the second shaft 112 via 59 and 160.

Then, bevel gear 1 is attached to each sprocket 161, 162, 163 that tensions the three-row mowing hoist tine 15...
The shaft 156 is connected through 64, 165, 166, 167 and 168° 169.

Next, the straw removal chain 22 is moved between the straw rocket 70 that drives it and the bevel gear 73, as well as the cutting blade 16.
Safety clutches 170, 170 are installed between the driving gear 131 and the crank rod 132, and when the cutting blade 16 and the straw removal chain 22 are clogged with culms, clods, etc. and an overload occurs, the respective safety clutches 170 are installed between the driving gear 131 and the crank rod 132. , 170 operates appropriately to cut off the power transmission, and the straw removal chain 22 and the cutting blade 16
It is formed in such a way as to stop and prevent these damage.

4 to 8 show the safety clutch 170, which includes an input shaft 17'1 that pivotally supports the bevel gear γ3 or gear 131, and an output shaft 172 that pivotally supports the sprocket 10 or crank rod 132. An idling plate 173 and a fitting plate 174 are provided on the input shaft 171, and each plate 1
A ball clutch 116, which is a clutch element loaded with a spring 175, is interposed between 73 and 174, and
A gear 178 that is always in mesh with the gear 177 formed on the idler plate 173 is pivotally supported on the output shaft 172, and the idler plate 173 is rotated within the set torque range by engagement of the ball clutch 176.
and input shaft 171 and output shaft 172 via fitting plate 174.
and are formed to rotate in conjunction with each other.

The free rotation plate 173 is connected to the human power shaft 171 via the collar 119.
The idler plate 1 is rotatably supported on the input shaft 171 via a slide bearing 181 to a receiving plate 180 fixed to the input shaft 171.
73 is in contact with one side, and the other side is opposed to the fitting plate 174 with a slight clearance 182 formed therebetween.

The fitting plate 174 is engaged with the input shaft 171 via a key 183, and a hole 185 is formed in the fitting plate 174 to accommodate the ball clutch 176, the spring 175, and a slider 184 interposed between them. The hole 185 is closed with a bolt 186 so that the ball clutch 176 is pressed against the side surface of the opposing free rotation plate 173.

In addition, an idler plate 173 that presses the ball clutch 176
A conical hole is opened in the side surface of the notch 187 to form an engaging notch 187, a part of the ball clutch 176 is fitted into the notch 187, and the desired power transmission torque is generated by the engagement of the ball clutch 176 and the engaging notch 187. Input axis 1 within range
71 and the output shaft 172 are configured to rotate in conjunction with each other.

Furthermore, a cylindrical hole is formed on the same circumference as the engaging notch 187 on the side surface of the free-wheeling plate 173 to form a free-fitting notch 188 as a free-moving element, so that, for example, the load on the output shaft 172 is suddenly increased. , when the load exceeds the torque transmitted by the engagement between the ball clutch 176 and the engagement notch 187, the ball clutch 176 separates from the engagement notch 187, and the engagement plate 1
74 idles, the ball clutch 176 enters the loose fitting notch 188, the ball clutch exit side of the hole 1850 is closed by the slider 184, and the ball clutch 176 enters the fitting plate 17.
output shaft 172.
Formed to stop.

Also, a bushing rod 18 is attached to the bottom of the loose fitting notch 188.
A bushing rod 189 is extended in the opposite direction to the notch 188, with the tip of the bushing rod 189 facing, and the base end of the rod 189 is fixed to a ring plate 190, so that the bushing rod 189 is always
Spring 1 so that the tip is located at the bottom of the notch 188
91 is energized, and when the ball clutch 176 enters the loose fitting notch 188 as described above, the overload of the output shaft 172 is eliminated and the hole 185 is opposed to the loose fitting notch 188,
After pushing the bushing rod 189 into the loose fitting notch 188 through the ring plate 190 and inserting the ball clutch 176 in the notch 188 into the hole 185, the freeing plate 173
Alternatively, by rotating one of the fitting plates 174 and fitting the corresponding Pol clutch 1γ6 into the engagement notch 187 again, the input shaft 171 and the output shaft 172 are again rotated in conjunction with each other due to their engagement. It is.

When the ball clutch 176 is fitted into the engagement notch 187 as shown in FIG. Drive the blade 16 or the straw removal chain 22.

During these operations, when the cutting blade 16 or the straw removal chain 22 is clogged with culms and clods, and the load on the output shaft 172 suddenly increases, the ball clutch 176 disengages from the engagement notch 187 as shown in FIG. , the ball clutch 176 slides on the idler plate 173 surface.

Then, as shown in FIG. 8, the ball clutch 176 enters the loose fitting notch 188, causing only the input shaft 1γ1 and the fitting plate 174 to idle, and the cutting blade 16 or the straw removal chain 22 to stop together with the output shaft 172, resulting in damage to them. prevent.

At this time, the open end of the hole 185 is sealed by the slider 184, making the surface of the fitting plate 174 flat, so that the ball clutch 176 is not worn out due to idle rotation of the fitting plate 114.

Furthermore, the input shaft 171 is stopped, the culms and clods clogged with the cutting blade 16 or the straw removal chain 22 are removed, and either the idler plate 173 or the fitting plate 174 is manually rotated to remove the idler as shown in FIG. The hole 185 is opposed to the fitting notch 188, and the bushing rod 189 is inserted into the notch 1 through the ring plate 190.
88 and ball clutch 11 in notch 188
6 into the hole 185, manually rotate either of the plates 173, 174, and engage the ball clutch 176 with the engagement notch 18.
7, the input shaft 171 and the output shaft 172 are rotated in conjunction with each other, and the work is resumed.

Note that the hole 185 may be provided in the free rotation plate 173, and the notches 187 and 188 may be provided in the fitting plate 174, and each plate 173 and 174 may be pivotally supported on the output shaft 172, which is not applicable to the above implementation. It has the same effect as the example.

Furthermore, although the clutch element is formed by the ball clutch 176, a ratchet mechanism such as a wedge-shaped rod may also be used.In this case, a key for releasing the ratchet engagement may be used as a floating element, and a safety clutch may be used as in the above embodiment. 1γ0
can be configured.

As is clear from the following embodiments, the present invention has an idling plate 173 that is rotatably supported and a fitting plate 114 that is engaged and supported on the same shaft 171 at a constant interval. A hole 185 into which the ball clutch 176 is inserted is formed in either the fitting plate 1γ4 or the idler plate 173, and the spring 175 for pushing out the ball clutch 116 and the slider 184 are inserted into the hole 185. An engagement notch 187 for engaging the ball clutch 176 is provided on the other side of the free rotation plate 173 or the fitting plate 1γ4, and a loose fitting notch 188 into which the entire ball clutch 176 can be inserted is provided between the engagement notch 187 and the engagement notch 187. The hole 185 is opened on the same circumference and is configured to close the hole 185 with a slider 184 when the ball clutch 176 is moved to the loose fitting notch 188. By keeping the spacing substantially constant, it is possible to prevent the ball clutch 176 from escaping to the outside, and by inserting the spring 115 into the hole 185, which presses the ball clutch 176 into the engagement notch 187, one or more Any ball clutch 176 can be easily inserted into the ball clutch 176, and the ball clutch 176 can be easily handled during assembly and disassembly, etc., compared to the conventional structure in which a movable free rotation and fitting plate are crimped with a single spring. The clutch 1γ6 can be moved between the engagement notch 187 and the loose fitting notch 188 while being inserted and supported in the hole 185, and the power disconnection operation of the plurality of ball clutches 187 can be stably obtained. Damage to the slider 187 and noise when the power is cut off can be drastically reduced.
By closing the hole 185 with the hole 84, the above-mentioned effect is further promoted, and remarkable effects such as safe use and great practicality are achieved.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a schematic side view of the combine harvester, Fig. 2 is a plan view thereof, Fig. 3 is an explanatory diagram showing its drive system, and Fig. 4 shows the main parts. FIG. 5 is an enlarged sectional view, FIG. 5 is a partially exploded view, and FIGS. 6 to 8 are operation explanatory views. 113... Idle plate, 174... Fitting plate, 176...
- Ball clutch (clutch element), 188... Loose fitting notch (loose element).

Claims (1)

[Scope of utility model registration request] An idle plate 173 that is rotatably supported and a fitting plate 174 that is engaged and supported are always supported on the same axis 171'' with a constant interval, and either the fitting plate 174 or the idle plate 113 is The ball clutch 176 is inserted into the hole 185, and the spring 1γ pushes out the ball clutch 176.
5 and a slider 184 into the hole 185, and an engagement notch 187 that engages the ball clutch 176 with the other of the idler plate 173 or the fitting plate 174.
A loose fit notch 188 into which the entire ball clutch 176 can be inserted is opened on the same circumference as the engagement notch 187, and the hole 185 is opened when the ball clutch 176 is moved into the loose fit notch 188. A power transmission device characterized in that it is configured to be sealed by a slider 184.