JPS591001Y2 - Tractor work equipment mounting structure - Google Patents

Description

[Detailed description of the invention] The present invention relates to a work equipment mounting structure for a tractor, which facilitates handling when installing a work equipment such as a front loader approximately in the center of the tractor body, and increases the strength of the front part of the tractor body. The purpose is to

The front loader can be attached and detached from both sides of the tractor body, but the conventional mounting structure is to form mounting seats on both sides of the clutch housing, which is integrated with the transmission case.
Since the mounting frame on the front loader side is brought into contact with the clutch housing from the side, and the mounting frame is attached to the clutch housing using a mounting bolt that screws into the mounting seat, there is a problem with ease of handling when installing and removing it. was there.

In other words, the bonnet, steps, etc. protrude laterally more than the clutch housing, and the mounting seat is recessed relative to them, so it is difficult to attach the mounting frame directly to the clutch housing. This was an obstacle and made workability extremely difficult.

The tractor body has an engine mounted at the front as part of its structure, and the front wheel bearing stand and clutch housing are bolted to the front and rear of the engine crankcase, so it is easy to install a front loader, etc. In this case, a large shearing force is applied to each bolt, and therefore, from the viewpoint of the strength of the tractor body, there is a natural restriction on the size of the work equipment to be attached.

The present invention was provided with the aim of solving the problems of the conventional tractors as described above, and its characteristics are that the engine and the bonnet covering the engine are provided at the front of the tractor body. In the tractor, a pair of left and right mounting bases are provided on both sides of the tractor body approximately in the center, and each of these mounting bases has a fixed plate fixed to the side of the tractor body and a position that protrudes laterally outward from the hood. A mounting plate having a work equipment mounting portion and a horizontal receiving plate are fixed to each other so as to be substantially orthogonal to each other, and a step is attached to the receiving plate of each mounting base, and a step is attached to each mounting base and a horizontal receiving plate. The front end of the tractor body is connected to the front end of the tractor body by a reinforcing frame that runs along the side of the engine.

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.
In the figure, reference numeral 1 denotes a tractor body, which is composed of an engine 2, a clutch housing 3, a transmission case 4, etc. as a structural body, and has a bumper weight 5 attached to its front end via a front vehicle bearing stand.

6 is a front wheel, 7 is a rear wheel, and -8 is a rear wheel fender.

Reference numeral 9 indicates a bonnet, and reference numeral 10 indicates a safety cover, which are provided so as to substantially completely cover the upper and side parts of the engine 2 and the like.

A cabin 11 is provided with a steering wheel 12, a driver's seat, and the like.

Reference numeral 13 denotes steps attached to both sides of the central portion of the tractor body 1, and the rear side is supported by a floor cover, a rear wheel fender 8, etc.

Reference numeral 14 denotes mounting bases provided on both sides of the lid vehicle body 1 that stops at the forward position of the step 13, and as shown in FIG. It has an L-shaped mounting plate 16 and a horizontal receiving plate 17 that is integrally fixed to the fixing plate 15 and the mounting plate 16, and the fixing plate 15 is shown in FIGS. As shown in Figure 6, a mounting seat 18 is formed on the side wall of the clutch housing 3.
It is removably attached to via a mounting bolt 19.

The mounting plate 16 is for mounting a work machine such as a front loader 20, and has a pair of upper and lower mounting holes 21 formed at a horizontally intermediate position so as to sandwich a pedestal 17. The mounting frame 22 of the loader 20 is connected to the mounting hole 2
It is removably attached by a bolt/nut 23 that is inserted into 1.

Also, a mounting bracket 24 is provided on the inner end side of this mounting plate 16.
is provided to project forward, and a reinforcing frame 25 is attached to the mounting bracket 24, which passes through the lower side of the engine 2 and is connected to the bumper weight 5.

The reinforcing frame 25 is intended to reinforce the front part of the tractor body 1 and reduce shearing force acting on bolts etc. that connect the engine 2 and the clutch housing 3. (For example, oil filter, etc.) It also has a function as a guard, and this reinforcing frame 2
A lower end portion of a safety cover 10 is detachably attached to the lower end portion of the safety cover 5 by wing bolts 26.

The upper end of the safety cover 10 is supported by a retaining pin 27 that can be inserted into and removed from a pin hole in the bonnet 9.

The front end of the step 13 is supported on the receiving plate 17 of the mounting base 14 via a vibration-proof structure.

That is, an L-shaped mounting bracket 28 is attached to the front end of the step 13.
An inverted U-shaped support member 30 is provided laterally with bolts and nuts 29 through the
A letter-shaped bracket 31 is provided.

Each bracket 31 has a vibration isolating material 3 fitted inside a collar 32.
3 is provided, and on the other hand, a vibration isolator 35 fitted inside the collar 34 is provided on the receiving plate 17 side corresponding to each vibration isolator 33, and these vibration isolators 33. Each bracket 31 of the support member 30 is removably supported on the receiving plate 17 by bolts and nuts 36 while in contact with the support member 30 .

Of course, it goes without saying that there is some gap between the upper and lower collars 32 and 34.

Note that a vibration isolating material 37 is interposed between the lower side of the receiving plate 17 and the nut.

The support member 30 is attached to the step 13 via the mounting bracket 28 at the center in the lateral direction, and is also fastened to the step 13 by a bolt/nut 3B at the outer end in the lateral direction.
This bolt/nut 38 also has the function of aligning the mounting plate 40 provided at the lower end of the front column 39 of the cabin 11 with the step 13, so that this front column 39 is also attached via the vibration isolation structure. It is supported by the receiving plate 17 of the mounting base 14.

According to the embodiment of the present invention having the above configuration, the mounting base 14 is integrated (welded) with the fixing plate 15, the mounting plate 16, and the receiving plate 17 so as to mutually reinforce each other. The strength of the mounting base 1 is large, and therefore it is possible to increase the amount of lateral protrusion of the mounting base 14.
Even if the mounting frame 22 of the front loader 20 is attached to the front loader 4, it can sufficiently withstand the load during the work.

When installing the front loader 20, its mounting frame 22
It is sufficient to contact the front surface of the mounting plate 16 and fasten with the bolts and nuts 23, and since the mounting position protrudes laterally from the bonnet 9, etc., it is of course easy to fasten the bolts and nuts 23. This means that while the front loader 20 is placed on the ground with a stand or the like and the tractor is driven from behind, the mounting frame 22 can be brought into contact with the front surface of the mounting plate 16. work efficiency is significantly improved.

In addition to mounting the mounting frame 22 on the mounting base 14, the mounting frame 22 may be connected to other parts for reinforcement.

When the mounting base 14 is provided in the center of the tractor body 1 and a working machine is mounted thereon, the strength against the bending moment of the front part of the tractor body 1 becomes a problem.

Therefore, since this mounting base 14 and the bumper weight 5 are connected by a reinforcing frame 25, the load of the front part of the tractor body 1 can be shared by this reinforcing frame 25, and the shearing force applied to the joint bolts etc. is reduced. , the strength is significantly improved.

Further, this reinforcing frame 25 passes through the lower side of the engine 2, and has the function of protecting auxiliary equipment attached to the engine 2, as well as making the appearance of the vicinity of the engine 2 neat and neat.

Furthermore, since the reinforcing frame 25 is also used for attaching the safety cover 10, the structure of this part is simple, and the safety cover 10 can also be firmly fixed to prevent its vibration.

Note that the mounting frame 22 may be reinforced by connecting the upper end of the mounting frame 22 of the front loader 20 and the front end of the reinforcing frame 25.

The mounting base 14 is used not only for mounting the work equipment but also for mounting the front support 39 of the step 13 and the front support 39 of the cabin 11, and there is no need for any mounting members for each of these, simplifying the structure. can.

Furthermore, the mounting base 14 is a rigid body, and naturally the vibrations of the tractor body 1 are transmitted to the steps 13 and the front support 39.
is attached to the receiving plate 17 of the mounting base 14 via a vibration-proof structure, so that vibrations can be completely blocked by this vibration-proof structure, making it possible to improve the comfort of the driver.

Furthermore, since the front support column 39 is connected to the step 13 and the anti-vibration structure is used for both, the structure itself of that part becomes simpler.

As described in detail in the embodiments above, in the present invention, a pair of left and right mounting bases are provided on both sides of the approximately central portion of the tractor body, and a mounting plate of the mounting base is provided at a position that protrudes laterally outward from the bonnet. Since a work implement attachment part is provided and the work implement is attached to this attachment part, it is extremely easy to handle when attaching and removing the work implement, compared to a conventional one that is directly attached to the tractor body.

In addition, the mounting base has a fixed plate fixed to the side of the tractor body, a mounting plate, and a horizontal receiving plate that are fixed to each other so that they are substantially orthogonal to each other, so each member reinforces each other. , the strength of the mounting base is significantly improved.

Furthermore, the mounting base is not only used to mount the work equipment, but also uses a support plate that functions to reinforce the step to attach the steps, so the structure is simpler than when each work equipment step is provided with a mounting base. is easy.

In addition, since this mounting base and the front end of the tractor body are connected by a reinforcing frame, the front part of the tractor body can be reinforced with this reinforcing frame, and sufficient strength can be ensured even when the work equipment is attached. .

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a schematic side view;
Figure 2 is a perspective view of the mounting base, Figure 3 is a side view of the main parts, Figure 4
The figure is a partially broken rear view of the same, FIG. 5 is a partially broken front view of the same, and FIG. 6 is a plan view of the same. 1...Tractor body, 2...Engine, 3...Clutch housing, 4...Mission case, 5...
・Bumper weight, 9... Bonnet, 11...
Cabin, 13...Step, 14...Mounting stand, 1
5... Fixed plate, 16... Mounting plate, 17... Receiving plate,
20...Front loader, 22...Mounting frame, 25.
... Reinforcement frame, 39... Front support.

Claims (1)

[Scope of utility model registration request] In a tractor that is equipped with an engine and a bonnet that covers it at the front of the tractor body, a pair of left and right mounting bases are provided on both sides of the approximately central part of the tractor body. A plate, a mounting plate having a work equipment mounting portion at a position protruding laterally outward from the bonnet, and a horizontal receiving plate are fixed to each other so as to be substantially perpendicular to each other, A work equipment mounting structure for a tractor, characterized in that a step is mounted on the receiving plate of each mounting base, and each mounting base and the front end of the tractor body are connected by a reinforcing frame that passes along the side of the engine.