JP2504531Y2 - Chassis structure of self-propelled agricultural machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The disclosed technology belongs to the technical field of the chassis structure of a self-propelled agricultural machine such as a combine.

<Prior art> As is well known, simplification of structure and energy saving technology have become important in the production technology of agricultural machines used for harvesting agricultural products such as rice and wheat due to the expansion of industry. In the self-propelled agricultural machine, while improving the maintainability and usability, it is becoming possible to improve the habitability and the running performance by equipping the cabin.

Therefore, in order to stabilize the traveling of self-propelled agricultural machines such as combine harvesters in wet fields and in fields with ridges, a wide grounding surface is provided and a crawler is installed to guide the driving wheels, driven wheels, and rolling wheels. A plurality of rolling wheels support the load.

As shown in FIG. 6, the combine 1 has a truck frame 2 on which drive wheels 3, driven wheels 4, rolling wheels 5, 5, ... Are pivotally mounted, and a chassis frame 6 on which a traveling device 7 such as a prime mover or a mission is provided. Is generally installed to form a chassis 8, and a work equipment 9 such as a mowing device, a thresher, and a straw device is installed.

<Issues to be solved by the device> However, since the rollers 5, 5 are arranged in front of and behind the machine body and the crawler 10 rolls, the ground load is small, and traveling in wetlands is stabilized accordingly. However, since the work equipment 9 such as a threshing machine having a large size and a large weight and the traveling device 7 are placed on the chassis frame 6, the chassis frame 6 is placed in a considerably overhanged posture and is in a state of top heavy, However, there is a problem that rocking easily occurs when traveling or turning in a field such as a ridge crossing or a ridge.

In order to deal with this, as shown in FIG. 5 of Japanese Patent Laid-Open No. 1-301477, a chassis balance adjusting device 11 according to the invention and invention of the applicant has been developed and put into practical use. The chassis balance adjusting device 11 will be briefly described below. As shown in FIG. 5, swing arms 12, 12 are swingably supported on the chassis frame 6, and the sliding end 13 of the swing arm 12 is supported. Rolling wheels 5, 5 are connected to the track frame 2 which is pivotally mounted, and a cylinder 15 pivotally supported by the chassis frame 6 and connected to each swing arm 12 and an integral swing lever 14 is moved forward and backward, whereby the rolling wheels 5, 5 on both sides are moved. 5 ... is above and below the aircraft,
The center of gravity is adjusted by moving the center of gravity to the side and back and forth so that the center of the center can be adjusted. The aim is to level the airframe by increasing the weight of the grains.

In addition, when crops are harvested seasonally throughout the year and the recent low-cost agriculture is promoted, agricultural machinery becomes multifunctional and common to each type such as 3-row cutting and 4-row cutting on the manufacturing side. There are many parts to be used, the work equipment 9 to be mounted is an attachment type, and there are variations of the driver's seat 16 with an open type or a cabin type, but in such a case, the chassis 8 is in the same state. If so, the center of gravity cannot be obtained as designed because the front and rear loads of the aircraft are different, and different frames are used for each model,
There was a disadvantage that the cost could not be reduced.

Then, when the combine 1 is used in each farm, for example, when the binding machine 9 is installed as work equipment in the combine 1 due to reduction of personnel, the center of gravity moves to the rear part, and the driver's seat
When the 16 is a cabin type and equipped with equipment such as a cooler, the center of gravity moves forward and the aircraft can not be balanced well, and it corresponds to stable running by changing the specifications of each farm after factory shipment There was a problem that it could not be done.

Furthermore, also in the chassis balance adjusting device 11 described above,
If the center of gravity is not corrected, there is a problem in that wetland performance cannot be maintained due to large swinging during running, or the rear part sinking when the vehicle starts with a large rear part weight.

<Purpose of Invention> The purpose of the invention of this application is to provide a technical problem to solve the problem of running stability due to the installation of working equipment for a self-propelled agricultural machine such as a combine based on the above-mentioned conventional technology, and to be prepared as an attachment type. In line with the multifunctional use of binding machines and cabins, the movement of the changing center of gravity is corrected to ensure stable driving, and at the same time, it can be manufactured at low cost, which is beneficial to the field of mechanization technology application in the agricultural industry. It is intended to provide an excellent chassis structure for a self-propelled agricultural machine.

<Means / Action for Solving the Problem> In order to solve the above-mentioned problems, the construction of the invention of this application, which has the above-mentioned utility model registration claim as its gist, is connected to the chassis frame and the track frame in order to solve the above-mentioned problems. A fulcrum boss as a rocking link is interposed in the section, and the fulcrum boss of the above-mentioned rocking link is connected at the rocking end of a swing arm that is pivotally supported on both sides of the chassis frame to pivot the rolling wheels. The track frame to be installed is linked, and the airframe can be moved up and down by advancing and retracting the cylinder that is pivotally supported by the chassis frame and connected to the swing lever, which is integrated with the swing arm. The chassis frame is supported in a predetermined position on the track frame, and when the cabin is attached or detached or when the variation of each type of mowing device is changed, the swing ring is moved through the cylinder. The front weight is corrected by tilting backwards, and the rear weight is corrected by tilting forward through the cylinder when a binding machine or rear attachment is installed, and the center of gravity of the machine is changed toward the center of gravity of the machine. He also took technical steps to correct and balance it.

<Embodiment> Next, one embodiment of the invention of this application will be described below with reference to FIGS. 1 to 4.

The same parts as those in FIGS. 5 and 6 will be described using the same reference numerals, and for convenience of illustration, the chassis will be described on one side of the machine body.

8'is a chassis, which forms the center of the gist of the invention of this application, is equipped in a combine 1'as a self-propelled agricultural machine, and thus in this embodiment, the truck frame 2 of the chassis 8'is a truck. As shown in FIG. 3, the main frame 2 ′ and the track main frame 2 ′ have two block track lower members 17, 17 abutting on the lower side thereof in a mating structure in the same direction. , And four roller wheels 5, 5 ... Are pivotally mounted on the track lower member 17 so as to be appropriately rotatable.

Further, the track main frame 2'is provided with mounting shaft holes 18, 18 for the tip portions of the swing arms 12 at two positions separated by a predetermined distance in the longitudinal direction of the machine body.

Then, as shown in FIG. 3, the track lower member
The bearing bosses 19 are provided in the 17, 17 adjacent to each other at a substantially central portion.

Thus, as shown in FIGS. 1 and 2, fulcrum bosses 20 as swing links are provided at both ends of upper and lower boss holes 21 and 2, respectively.
A pin 22 is appropriately attached to the bearing boss 19 through the boss hole 21 on the lower end side of 1 '
The boss hole 21 'at the upper end of the fulcrum boss 20 is pivotally connected to the screw union 13 of the swing end acting portion of the swing arm 12 by inserting an appropriate pin 22 as a stopper. The track main frame 2'is supported and is also connected by inserting the pin 22 through the mounting shaft hole 18.

Thus, the swing arms 12, 12 'are stopped at the shoulder portion of the fulcrum boss 20 at two positions on the chassis frame 6 to regulate the swing angle, and the base end portion is swingable at a set angle as shown in the figure. The ends of swing levers 14 and 14 'which are integrally provided on the swing arms 12 and 12' by pin coupling or the like are connected via a link 23 so that the ends of one of the swing levers 14 are pivotally supported. The rod 24 of the cylinder 15 is connected by
15 is pivotally supported on the chassis frame 6 at an appropriate position.

Therefore, the swing lever 14 and the swing arm 12
(12 ') and the fulcrum boss 20 are oscillated in a coordinated manner so that the track main frame 2'can be moved back and forth with respect to the chassis frame 6.

Further, the main track frame 2'connected via the fulcrum boss 20 by the union 13 at the swinging end of each swing arm 12 that swings as the cylinder 15 moves back and forth is displaced forward and backward by a predetermined amount with respect to the chassis frame 6. And a pin as a stopper
21 'is engaged with the shoulder portion of the fulcrum boss 20 so as to maintain the forward and backward tilting posture, and by the operation of the independent cylinders 15 on both sides (not shown), the rolling wheels 5, 5 ... It is made to ascend and descend, and the body can be freely tilted in the lateral direction.

In the above configuration, the combine 1'has various attachments selected at the time of shipment. For example, the mowing device is a 3-row cutting type or a 4-row cutting type, and the driver's seat 16 is an open type or a cabin type. Each model using the same chassis 8'is prepared, and there is also one in which a binding machine 9 is mounted on the rear part in an attachment type.

Thus, the combine 1'using the same chassis 8'is a three-cut type combine 1 ', as shown in FIG. 4, the fulcrum bosses 20, 20 are connected to the cylinder 15, the swing lever 14,
Swing arm 12 and fulcrum boss 20
At this time, the manual work is assisted, and as for the four-row cutting type combine 1 ', as shown in FIG. 1, the fulcrum bosses 20 and 20 are tilted backward and different depending on the cutting device of the work equipment 9. Chassis frame 6 is track frame 2
With respect to the weight that is supported by moving back and forth relative to the center of the track frame 2, the center of gravity is taken to balance the machine body.

Further, according to the ordering mode, the center of gravity is displaced by assisting the manual work by setting the fulcrum bosses 20 similar to the above even for the type in which the cabin 16 is provided in the driver's seat 16 of the machine of the combine 1 '.

Then, the combine 1'is shipped so that the weight of the machine body is evenly applied to all the ground contact surfaces of the crawler 10 so as to be balanced.

Further, when the user of the combine 1'replaces the attachment depending on the condition of the rice harvesting work, for example, when the binding machine 9 is mounted on the rear part due to the reduction of personnel, the center of gravity of the combine 1'moves backward. Also, when the cabin is removed by appropriately dissociating the bolt, the center of gravity moves backward.

Thus, in this case, the operator operates the cylinder 15 to move the swing lever 14, the swing arm 12, and the fulcrum boss.
By pushing the chassis frame 6 forward with respect to the track frame 2 via 20 by manual operation, the center of gravity moves forward, and the fulcrum boss 20 is in a forward tilted posture as shown in FIG. As a result, the weight of the chassis frame 6 is supported on the front side of the track frame 2 so that the center of gravity of the machine body is corrected and balanced.

This forward tilted posture is the union 1 of the swing arms 12 ', 12'.
The shoulder engagement is maintained through the swing link 20 and the pin 21 'of 3.

When the postures of the fulcrum bosses 20 and 20 are changed, by advancing the cylinders 15 and 15 on both sides, the track frame 2 and the chassis frame 6 separate from each other in the height direction, and the chassis frame 6 is pushed. Made easy.

Further, the posture of the fulcrum boss 20 can be changed on the road before and after entering the field.

When the cylinders 15 and 15 of the chassis 8 ′ are in the retracted position, the combine 1 ′ is in the lowered position, and when traveling in wetlands, the cylinders 15 and 15 are advanced and the combine 1 ′ is in the raised position, and in this case as well The center of gravity of is corrected, so
Wet field performance is improved, and stable traveling is carried out when cutting crops such as rice and wheat that are put into the field.

Needless to say, the embodiment of the invention of this application is not limited to the above-mentioned embodiment. For example, the bearing boss 19 provided on the track lower member 17 is vertically oscillated and also serves as the fulcrum boss 20. It is possible to adopt various modes such as being free to do so.

In addition, the self-propelled agricultural machines such as combine harvesters are widely used in the cabin of the driver's seat, but even with light equipment, a hood and door are provided to prevent wind and rain and dust from entering during harvesting. Along with the installation, there is a mode in which a cooler is installed to provide air conditioning, but since the prime mover is directly below the seat frame, engine sound enters and becomes noise, and heat is transmitted through the seat frame and air conditioning is performed. There was a difficulty of blocking.

Thus, as shown in FIGS. 7 and 8, the front portion of the seat frame 26 inside the cabin 25 has a double structure, and the inside is a water tank.
Provided as 27, the pipe 29 is joined to the drain 28 of the cooler and connected to the lower inside of the water tank 27, etc., and the water generated from the cooler is stored in the water tank 27 as a mode in which the faucet 30 is attached to the lower part, When the pipe 31 is connected to the upper part and a predetermined amount of water is stored, cold water is circulated so as to naturally flow out, vibration and heat are absorbed in the water tank 27, and the driver's seat 16 is soundproofed and cooler. The cost can be reduced by suppressing the operation of
The drain water of the cooler can be used as hand-washing water after the work is finished by the faucet 30 and can be used to replenish the cooling water of the radiator.

<Effects of the Invention> As described above, according to the invention of the present application, basically, work equipment such as a large size and heavy thresher and a traveling device are mounted on the chassis frame, and further work equipment such as a binding machine. Is mounted in an attachment type, or the driver's seat is changed to an open type or a cabin type etc.Self-propelled agricultural machines such as combine are common with the same chassis without using different frames for each model The excellent effects of being able to use a large number of parts, cost reduction, and low cost can be provided.

Thus, by installing the swing link in the connecting portion of the chassis frame and the track frame in the chassis of the self-propelled agricultural machine such as a combine, the center of gravity position is corrected by the forward tilt and the backward tilt of the swing link, The chassis frame is supported by the track frame to absorb different loads before and after the machine body, and an excellent effect is achieved in that traveling and turning of a combine ridge and ridges in a field are stabilized.

And when using the combine in each farm, for example,
When the combiner is equipped with a binding machine as work equipment to reduce the number of personnel, the center of gravity moves to the rear, but the operator pushes the chassis frame forward with respect to the track frame, so the center of gravity moves forward and shakes. The dynamic link is tilted forward, the weight of the chassis frame is supported by the track frame in the front direction, the body is balanced, and stable running is achieved.

If there is direct sunlight or rain during work, the cabin is mounted on the driver's seat through bolts as appropriate. Even if the center of gravity moves forward due to the cabin mounting and the balance of the aircraft changes, Similarly, by changing the posture of the swing link, an excellent effect that comfortable work can be performed by changing specifications of each farmer is achieved.

[Brief description of drawings]

FIG. 1 is a schematic partial side view of an embodiment of the invention of this application,
2 is a rear view of the relevant part, FIG. 3 is a partial side view of the same, FIG. 4 is a schematic partial side view of the same use state, and FIG. 5 is a schematic partial side view of a chassis based on the prior art, FIG. Fig. 7 is a schematic side view of the combine, Fig. 7 is a schematic side view of the cabin of the self-propelled agricultural machine, and Fig. 8 is a sectional view of the seat frame. 2 ... Truck frame, 6 ... Chassis frame, 8,
8 '... chassis of self-propelled agricultural machine, 20 ... swing link

Claims (2)

(57) [Scope of utility model registration request] 1. A chassis structure of a self-propelled agricultural machine in which a chassis frame is supported by a track frame via a pair of swing arms connected to a cylinder, and swings between the track frame and each swing arm acting portion. Chassis structure of a self-propelled agricultural machine, characterized by interlinking links. 2. A chassis structure for a self-propelled agricultural machine according to claim 1, wherein the swing link is interposed in a track frame so as to be movable back and forth.