JPH0714138Y2 - Airframe frame structure for traveling body slide mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a traveling body moving device capable of adjusting the left and right crawler intervals in a moving vehicle having a crawler traveling device such as a combine.

<Prior Art> Conventionally, generally, in a traveling vehicle of this type, when it is a combine, for example, in the case of dividing work or ridge work, the uncut stem culm is cut by a traveling body that is on the already-cut site in normal work. In order to avoid stepping on the pedestal or riding on a ridge, the one in which the traveling body on the cut land side can be moved in parallel to the other traveling body side is disclosed, for example, in Japanese Utility Model Laid-Open No. 57-120183 and Japanese Patent Laid-Open No. 61-183183. No. 9213, etc.

<Problems to be solved by the invention> In a work machine such as a combine having a conventional crawler traveling mechanism, a mission having a drive shaft projects downward from the machine body, so that the crawler may sink when traveling in wetlands. There were problems such as the mission contacting the ground.

Especially for those with a mechanism that the traveling body slides in the left and right directions,
The drive shaft of the sliding traveling body is configured to be expandable and contractable.When mud or the like is covered by the sinking of the crawler as described above, the expansion and contraction connection part is clogged with mud and the expansion and contraction of the drive shaft is hindered. There were drawbacks such as unreasonable force acting on.

<Means for Solving the Problems> The present invention for solving the above problems is provided in the horizontal frames 12a, 1 at the front and rear positions between the vertical frames 11, 11 provided at both ends.
A fixed traveling frame in which 2b is installed laterally to form a machine frame 13 and a traveling body 6 is provided below one side of the machine frame 13.
In a mechanism in which the slide frames 14a and 14b of the movable traveling frame 31 equipped with the traveling body 7) are attached to the other side lateral frames 12a and 12b so that the lateral frames 12a and 12b can be slid left and right. The front horizontal frame 12a is provided in the vertical frame 11 as a U-shaped cross section of the lower open type,
Further, an engine 34 and a pretreatment lift frame 35 are mounted on the front side horizontal frame 12a, and the slide frame 14
A plurality of rollers 15 are rotatably supported on the lateral frames 12a, 12b to support the machine load, and the slide frames 14a are covered so that the front and rear sides of the rollers 15 are covered by the lateral frames 12a, 12b. , 14b are housed in the horizontal frames 12a, 12b.

<Operation> The traveling frame 31 of the movable traveling body 7 is attached to the machine body frame 13 so as to be slidable in the left-right direction. The slide frame 14 provided on the traveling frame 31 transmits the body weight to the movable traveling body 7 while sliding in the horizontal frames 12a and 12b.

Front side horizontal frame 12a that houses the slide frame 14a
Is erected at a high position with respect to the rear horizontal frame 12b, so that it is possible to increase the ground height of a mission or the like attached to the lower side of the body frame 13.

<Embodiment> Next, an embodiment of the present invention will be described with reference to the drawings. In FIG. 2, reference numeral 1 denotes a combine traveling machine body, which comprises a pre-processing unit 2 for pre-processing such as cutting stem culms, a threshing unit 3 for threshing cut stalks, The post-processing section 4 for performing post-processing such as shredding the culm, the grain storage section 5 for storing the selected grain in the grain bag, and the like are the same as conventional ones.

Reference numerals 6 and 7 shown in FIG. 3 denote a pair of left and right crawler type traveling bodies, the traveling body 6 being on the uncut land side and the traveling body 7 being on the cut land side, but not on the uncut land side. The traveling body 6 is integrally assembled to the machine body frame 13 described later via the support frame 6a, and the outer edge of the crawler 6b substantially coincides with the weeding position of the uncut land side divider 2a of the pretreatment unit 2. It is like this.
On the other hand, as shown in FIGS. 4 and 5, the already-cut land side (movable side) traveling body 7 is composed of the drive wheels 7a, the rolling wheels 7b, and the idler 7c. Is
A mounting frame 8 on which the wheel 7b is pivotally mounted, support frames 9a, 9b bent or curved in a V shape extending upward from the front and rear portions of the mounting frame 8, and between the front and rear support frames 9a, 9b. It has an integral frame structure with an auxiliary frame 10 for connecting the. In this configuration, the front and rear support frames 9a and 9b have substantially equal distances l ₁ and l ₂ from the center point of the frontmost wheel 7b _{1 and} the center point of the rear end idler 7c, as shown in FIG. Is provided.
As a result, the friction resistance with the ground when the movable-side traveling body 7 slides is reduced by the front and rear slide frames 14 to be described later.
The a and 14b can be received evenly, and the sliding motion of the traveling body 7 can be smoothly performed.

On the other hand, as shown in FIG. 4, the body frame 13 includes a pair of left and right vertical frames 11 facing the front-rear direction, and a pair of front and rear horizontal frames 12 horizontally fixed between the vertical frames 11.
Framed by a and 12b, vertical frame 1
1 further extends rearward to form a frame, which forms a rear frame portion.

Further, the horizontal frames 12a, 12b have a U-shaped cross section with an open lower side, and a slide frame 14 described later is accommodated therein,
The vehicle travels in the horizontal frames 12a and 12b. Further, as shown in FIG. 4 and FIG. 1, the front lateral frame 12a is installed at a position higher than the rear lateral frame 12b, whereby the mission 19 and the crawler drive shaft at the front of the traveling machine body 1 are constructed. The ground clearance is increased, and wetland property and mud sweeping property are improved. The horizontal frame 12b on the rear side is erected at the same height as the vertical frame 11, and by disposing between the transmission bands of the transmission for rotating the spiral, the height of the threshing portion can be lowered, and the Glen tank The capacity and hopper capacity can be reduced. Further, a packing hook 13a is provided on the inner side of the front end of the vertical frame 11, and by providing the packing hook 13a at the inner position, the problem that the grain culm is caught and scratched during the splitting work is solved.

The horizontal frames 12a and 12b are installed at the front and rear horizontal frames 12
If it is provided so that the center of gravity of the machine is at the center position of a and 12b, the sliding resistance applied to the slide portions 12c of the front and rear lateral frames 12a and 12b, which will be described later, becomes equal and the traveling body 7 can be moved smoothly.

FIG. 6 shows an engine 34 and a pretreatment lift frame 35 provided on the body frame 13. As shown in FIG. 6, the front side horizontal frame 12a is provided straight in the left-right direction, so that the front end of the engine 34 and the pretreatment lift frame 35 are arranged on the same horizontal frame 12a on the same horizontal line. Because of this, the rigidity of the airframe is increased.

On the other hand, slide frames 14a and 14b oriented in the left-right direction are integrally attached to the upper ends of the substantially upright sides of the support frames 9a and 9b, respectively, as shown in FIGS. 4, 5, and 7. (The support frame 6a of the uncut land side traveling body 6 is integrally fixed to the horizontal frames 12a and 12b.)
A pair of left and right rollers 15 are attached to the slide frames 14a and 14b.
Are supported at predetermined intervals. And slide frame
14a, 14b, the front and rear sides of the roller 15 is a horizontal frame 12a, 1
The rollers 15 are housed in the horizontal frames 12a, 12b so as to be covered by the side walls of the horizontal frame 2b, and the rollers 15 are in contact with the inner ceiling portions of the horizontal frames 12a, 12b to receive the weight of the machine body. It is configured to be able to move to. Further, the slide frames 14a and 14b project over the crawler 16 and support the weight of the combine just above the crawler 16. In addition, the slide frames 14a, 14
b The whole structure is capable of receiving weight.
In this way, the slide frames 14a, 14b and the support frame 9a,
Since the assembly structure with 9b is a structure capable of receiving a load just above the crawler 16, the slide frames 14a, 14b and the support frames 9a, 9b are not subjected to an excessive bending load. Therefore, friction resistance due to bending load does not occur between the slide frames 14a, 14b and the slide portion 12C of the horizontal frame 12, the slide frames 14a, 14b slide smoothly, and it is easy to maintain the strength of the support frames 9a, 9b. Become. Plate-shaped stoppers 17a and 17b are provided on the uncut side of the slide portion 12c in the horizontal frames 12a and 12b. By providing the stoppers 17a and 17b, the slide frames 14a and 14b can be pressed against the stoppers 17a and 17b to ensure the parallelism of the left and right traveling bodies 6 and 7.

As shown in FIG. 5, FIG. 7 and FIG. 8 already described, in the horizontal frames 12a, 12b, the slide frames 14a, 1
A lower cover 18 is attached to the lower side of the 4b housing portion.

A notch 18a is formed at one end of the lower cover 18 so that the support frames 9a and 9b can be inserted therethrough.
The left and right sides are provided in the longitudinal direction so that the support frames 9a, 9b can move as the a and 14b move left and right. Further, a pair of rails 18b for restricting the forward / backward movement of the rollers 15 attached to the slide frames 14a, 14b are provided on the upper surface of the lower cover 18, and the rollers 15 are sandwiched and restricted from both sides. The slide frame 14 is firmly regulated in the front-rear direction by the rails 18b, so that the parallelism when the traveling body 7 slides can be reliably maintained. Further, even if the rail 18b is worn due to the regulation of the roller 15, it can be easily replaced and repaired.

By attaching such a lower cover 18, mud or the like does not enter the running portions of the slide frames 14a, 14b, and the maintenance frequency is reduced.

Further, as shown in FIG. 7, a discharge port 29 is formed between the left and right ends of the lower cover 18 and the horizontal frames 12a, 12b.
The discharge port 29 is for discharging mud, dust, and the like accumulated in the slide frame 12a, 12b accommodating portion by the lateral movement of the slide frames 12a, 12b.
By forming 29, maintenance can be performed easily and the frequency can be reduced.

Further, as shown in FIG. 9, the mounting position of the roller 15 mounted on the slide frames 14a and 14b is set to the roller
If the two positions, that is, the position where 15 touches the upper horizontal frames 12a and 12b and the position where the lower lower cover 18 contacts, it is possible to regulate the contact on both the upper and lower sides of the roller 15, and the slide frame. It is possible to prevent rattling while running 14a, 14b. In addition, this also makes it possible to keep the drive shaft 19a that expands and contracts always on a straight line, and ensures a smooth expansion and contraction operation of the drive shaft 19a.

Next, the moving mechanism 30 including the panto link of the traveling body 7 will be described with reference to FIGS. 4 and 10. The panto link includes the auxiliary frame 10 and the fixed-side traveling body 6
Are provided between support frames 6a that support the. A link rod 24,2 whose central portion is pivotally supported by a pin 26
The front end portion of 5 is pivotally supported by fixed fulcrums 21 and 20 provided on the front end portion of the auxiliary frame 10 and the front side support frame 6a, respectively. On the other hand, rollers 24b, 25b are rotatably supported at the rear ends of the link rods 24, 25. The link rods 24, 25 of the moving mechanism 30 are formed wide so as to increase rigidity, and the link rods 24, 25 are assembled with a narrow vertical distance in order to increase the ground height of the link rod 24.

Each of the rollers 24b and 25b includes a guide 22 attached to the inner side of the rear end of the auxiliary frame 10 and a support frame 6a of the fixed-side traveling body.
It is housed in a guide 23 attached to the. Fourth
As shown in FIG. 5, FIG. 5 and FIG. 11, the guides 22 and 23 are provided in the front-rear direction in the form of a channel whose lower part is open, and guide the rollers 24b and 25b in the front-rear direction, respectively. .

The guides 22 and 23 will be described in detail below.The guides 22b and 2 are provided below the mounting plates 22a and 23a attached to the machine body.
3b is installed. The guide portions 22b and 23b are rollers 24b and 2
5b is housed and guided in the front-rear direction, but the lower end side is bent inward to support the rollers 24b, 25b from below. The pins 24a, 25a of the rollers 24b, 25b are inserted between the inner ends of the bent portions and move in the front-rear direction.

When the movable traveling body 7 moves left and right, the pantoscopic movement mechanism described above is used.
The link rods 24 and 25 of 30 swing around the pin 26 and each roller 2
4b and 25b slide in the guides 22 and 23 in the front-back direction.

Here, the front-rear lengths of the guide portions 22b and 23b are substantially equal to the above-mentioned sliding range of the rollers 24b and 25b, and therefore the rollers 24b and 25b.
At the maximum slide position of b, a part of the rollers 24b, 25b protrudes from the end of the guide portions 22b, 23b. As a result, the mud and the like accumulated in the guides 22 and 23 are almost completely discharged by the rollers 24b and 25b which project with the sliding movement. On the other hand, the pins 24a and 25a are, as shown in FIG.
The shaft center is formed in a displaced form, and the pair of rollers attached to the pins 24a, 25a individually contact the inner surfaces on the left and right sides of the guide portions 22b, 23b and roll. By mounting the rollers 24b and 25b in the guides 22 and 23 at the offset positions in this way, there is no play between the rollers 24b and 25b and the guides 22 and 23, the response performance of the moving mechanism 30 is improved, and the traveling body is The parallelism of 7 can be reliably maintained.

The slide resistance of the traveling body 7 with respect to the slide drive is larger in the front slide portion 12c due to the weight of the extendable drive shaft attached to the front side, the pretreatment unit 2, etc., but the rear side having the smaller slide resistance. Since the sliding ends (24b, 25b) of the link rods 24, 25 are
The front and rear slide resistance of the traveling body 7 is reduced, and the parallel sliding of the traveling body 7 can be smoothly performed. Furthermore, since the rear side with few mechanisms such as missions is the slide end, the guides 22, 2
Maintenance of 3 and rollers 24b and 25b is easy.

Although the guide 22 is located above the crawler 16, it is attached to the inside of the auxiliary frame 10.Therefore, mud and the like carried around the rolled crawler 16 is blocked by the auxiliary frame 10 inside the guide 22. It doesn't get in.

Further, even if mud or the like enters the guides 22 and 23, the lower side is opened, so that the rollers 24b and 25b can be reciprocally moved and the mud can be easily discharged, and maintenance and inspection are easy.

The lateral movement of the movable traveling body 7 is performed by a telescopic drive mechanism 27 including a two-way hydraulic cylinder interposed between the machine body frame 13 and the traveling frame 31 of the movable traveling body 7. In the mechanism of the present embodiment, the extension / contraction drive mechanism 27 is mounted between the body frame 13 and the auxiliary frame 10 at a position displaced forward of the central portion of the pantograph-shaped movement mechanism 30, and inside the engine frame 33. It is housed.

When the moving mechanism 30 is driven by the extension / contraction drive mechanism 27, the driving force is generated by the panto-shaped link rods 24, 25 from the link rods 24, 25 connecting portion at both ends of the auxiliary frame 10 to the link rod 24 of the fixed-side traveling body 6. The force is evenly transmitted to the 25, 25 connecting portion, and the movable traveling body 7 can be moved while always maintaining the parallel state.

The expansion / contraction drive mechanism 27 is directly connected to the traveling frame 31 of the traveling body 7, and the driving force of the mechanism 27 is directly transmitted as the driving force of the traveling body 7, so that the power transmission efficiency is improved. Generally, in the two-way cylinder, the driving force in the extension direction is larger than the driving force in the contraction direction. However, in the mechanism of this embodiment, expansion and contraction between the vertical frame 11 and the auxiliary frame 10 on the side of the cut land is performed. By providing the drive mechanism 27, it becomes possible to apply a driving force in the extending direction of the cylinder to the contracting direction in which the slide resistance of the traveling body 7 is large. Further, since the extension / contraction drive mechanism 27 composed of a cylinder is housed in the engine frame 33 in the plane of the body frame 13, the top surface of the body frame 13 becomes flat, and the device can be easily attached. It can prevent the mud from being covered.

In particular, in the present invention, as described above, since the telescopic drive mechanism 27 is attached to the front side where the slide resistance of the traveling body 7 is large, the front and rear slide portions 12c are attached to the front and rear slide portions 12c according to the respective slide resistances. A large driving force acts on 12c. Therefore, the front and rear slide frames 14
It is possible to make the slide amounts of a and 14b the same, and the slide frames 14a and 14b slide smoothly in the slide portion 12c.

In addition, since the expansion and contraction drive mechanism 27 and the moving mechanism 30 are separately configured and attached, the moving mechanism 30 can be independently assembled and disassembled, which has advantages such as reduction in manufacturing cost and easy maintenance due to disassembly. .

The extension drive mechanism 27 is an operation lever provided on the operation panel.
Operated by 28. In the device of the present embodiment, since the extension / contraction drive mechanism 27 is a hydraulic cylinder, the operating lever 28
The hydraulic valve is operated to drive the telescopic drive mechanism 27. The hydraulic oil supply pipe is naturally connected to the two-way cylinder via a joint 32 attached to the machine body frame 13.

<Effect of the Invention> According to the mechanism of the present invention configured as described above, since the horizontal frame on the front side is raised, it is possible to increase the ground height of the mission under the body frame and the drive shaft of the crawler, and thus the crawler in the wetland. In addition to the effect that the mission case and drive shaft do not come in contact with the ground even if it sinks, both the engine and the pretreatment lift frame were mounted on a single front lift frame, so that both supports could be used in common and shared. The structure of the frame is simple, the rigidity is high, and the cost is low.

In particular, with respect to the drive shaft on the movable traveling body side that can be expanded and contracted, it is possible to reduce troubles such that mud or the like is caught and expansion and contraction becomes difficult.

Further, since the horizontal frame in the machine frame is used as the slide guide of the movable traveling frame, it is not necessary to provide a special slide guide in addition to the machine frame, and the frame structure is simple, robust and low in cost.

Further, since the slide frame of the movable traveling frame and the roller for supporting the machine body are inserted and housed from below so as to cover the front and rear sides in the lateral frame having a U-shaped cross section, the ground height under the machine frame is lowered or the machine body is lowered. It is not necessary to raise the frame unnecessarily, and since the upper and lateral sides of the roller are surrounded by the horizontal frame, it is possible to prevent damage to the slide portion or functional failure due to external impact or adhesion of mud.

[Brief description of drawings]

FIG. 1 is a side view of a traveling body and an airframe of the present invention, and FIG.
Fig. 3 is an overall plan view of a combine equipped with the present invention, Fig. 3 is a front view of the combine, Fig. 4 is an overall perspective view showing a mounting state of a fuselage frame and a panto link, and Fig. 5 is a track frame and a panto link. 6 is an exploded perspective view of FIG.
FIG. 7 is a partial perspective view showing a state in which an engine and a pretreatment lift frame at a front part of a machine body frame are attached, FIG. 7 is a rear view of a traveling frame, and FIG. 8 is a side surface of a horizontal frame showing a slide frame sliding in the horizontal frame. Sectional view, No. 9
FIG. 10 is a front view of a slide frame showing another example of mounting at a mounting position of a roller mounted on a slide frame, FIG. 10 is a plan view of a moving mechanism, and FIG. 11 is a front view showing a roller guide portion of a guide. . 1: Airframe, 6, 7: Traveling body, 9: Support frame 10: Auxiliary frame, 11: Vertical frame, 12: Horizontal frame 13: Airframe frame, 14: Slide frame, 15: Roller 17: Stopper, 18: Lower side Cover, 20, 21: Fixed fulcrum 22, 23: Guide, 24, 25: Link rod, 27: Telescopic drive mechanism 29: Discharge port, 31: Travel frame

Claims (1)

[Scope of utility model registration request] 1. Vertical frames (11), (11) provided at both ends.
The horizontal frames (12a) and (12b) are laterally provided at the front and rear positions between them to form a machine frame (13).
A fixed traveling frame (31) equipped with a traveling body (6) is attached to one side lower side of (3), and a horizontal frame (12) on the other side is attached.
In a mechanism in which slide frames (14a) and (14b) of a movable traveling frame (31) equipped with a traveling body (7) inside a) and (12b) are attached so as to be slidable left and right, the horizontal frame (12a), The front side horizontal frame (12a) is provided on the vertical frame (11) with the lower open type U-shaped cross section (12b), and the engine (3
4) and the pretreatment lift frame (35) are attached, and the horizontal frame (12) is attached to the slide frames (14a) and (14b).
a) and (12b) are rotatably supported to support a plurality of rollers (15) supporting the load of the machine body, and the front and rear sides of the rollers (15) are covered by the lateral frames (12a) and (12b). Replace the slide frames (14a) and (14b) with the horizontal frame (12
Airframe frame structure for the traveling body slide mechanism housed in a) and (12b).