JP5216451B2 - Weight mounting device for work vehicle - Google Patents

Description

  The present invention relates to a weight mounting device for a working traveling vehicle in which a front loader and a front weight can be mounted on a traveling vehicle such as a tractor.

In this type of prior art, for example, as disclosed in Patent Literature 1, a boom is connected to the mast via a pivot shaft, and a boom cylinder for raising and lowering the boom is provided between the mast and the boom. A work tool is provided at the end of the boom, and a stand member whose posture can be freely changed from the acting posture to the stowing posture is provided on the boom to constitute a front loader, and the front loader mast is detachably attached to the front and rear middle parts of the traveling vehicle body. And a weight mounting member for detachably mounting a weight on the front portion.
JP 2008-82128 A

In the prior art, when the front loader is mounted, the front weight is not mounted, but when the front loader is removed and the rear working machine is mounted, the front weight is mounted.
The mounting of the front weight to the weight mounting member is performed artificially, and although it is divided into many pieces, one piece is several kilograms to several tens kilograms, so the attachment and detachment work becomes heavy labor. ing.
It is an object of the present invention to provide a weight mounting device for a working traveling vehicle that can solve such problems of the prior art.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a weight mounting device for a working traveling vehicle that can mount a front weight using a front loader.

Specific means for solving the problems in the present invention are as follows.
First, a boom 5 is connected to the mast 3 via a pivot shaft 4, and a boom cylinder 6 for raising and lowering the boom 5 is provided between the mast 3 and the boom 5, and a work tool 7 is provided at the tip of the boom 5. The boom 5 is provided with a stand member 8 whose posture is freely changeable from the action posture A to the storage posture B to constitute the front loader 1,
A mounting frame 20 for detachably mounting the mast 3 of the front loader 1 is provided in the middle part of the front and rear of the traveling vehicle body 2, and a weight mounting member 9 for detachably mounting a weight W is provided at the front part.
A suspension part Wa is formed in the weight W, and a suspension tool 10 that suspends the weight W via the suspension part Wa is provided in the stand member 8.

Second, the weight mounting member 9 is provided at the front portion of the traveling vehicle body 2 so as to be able to move forward and backward.
Third, a stand cylinder 19 is provided between the boom 5 and the stand member 8 to change the posture of the stand member 8 from the action posture A to the storage posture B.
Fourthly, a boom 5 is connected to the mast 3 via a pivot shaft 4, a boom cylinder 6 for raising and lowering the boom 5 is provided between the mast 3 and the boom 5, and a work tool 7 is provided at the tip of the boom 5. The boom 5 is provided with a stand member 8 that can be changed in posture from a working posture A to a storage posture B by a stand cylinder 19 to constitute the front loader 1.
A mounting frame 20 for detachably mounting the mast 3 of the front loader 1 is provided in the front and rear halfway portion of the traveling vehicle body 2, and a weight mounting member 9 for detachably mounting a weight W is provided at the front portion so as to be able to move forward and backward. And
The weight W is formed in a cylindrical shape, the suspension portions Wa are formed at both ends of the shaft core, and the weight mounting member 9 is formed with a receiving portion 9a for receiving the both ends suspension portions Wa of the weight W,
A suspending tool 10 is provided on the upper side of the grounding body 8a of the stand member 8 to suspend the weight W by engaging with the suspending portion Wa of the weight W.
[Action]
The working traveling vehicle having the above-described features has the following effects.

There are cases where the work traveling vehicle is equipped with the front loader 1 to perform loader work, and where the front loader 1 is detached and a front weight is attached to work with the rear working machine.
The front loader 1 can be separated from the traveling vehicle body 2 by setting the stand member 8 to the action posture A, and can be erected on the ground. When the loader operation is performed, the stand member 8 is set to the storage posture B and the front weight is set. When mounting, the stand member 8 is suspended from the boom 5. The posture change from the action posture A to the storage posture B can be performed by the stand cylinder 19.

The stand member 8 is provided with a hanging tool 10, and the boom 5 can be lifted and lowered by the boom cylinder 6, and the weight W can be hung through the hanging part Wa. If the stand cylinder 19 is provided, it can be operated and the weight W can be moved back and forth with respect to the traveling vehicle body 2.
A weight mounting member 9 is provided at the front portion of the traveling vehicle body 2. When the weight W is lifted by the stand member 8, the weight mounting member 9 can be mounted easily and easily. At this time, if the weight mounting member 9 protrudes forward, the operation is further simplified.

  Since the weight W is lifted by the boom 5, it can be formed into a large weight, and can be formed into a cylindrical shape so that it can roll.

  According to the present invention, the weight can be lifted by lifting and lowering the lifting tool provided on the stand member, and can be easily and easily attached to and detached from the weight mounting member at the front portion of the traveling vehicle body.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1-3, 1 is the front loader with which the tractor 11 illustrated as a traveling vehicle was mounted | worn.
The tractor 11 has a front transmission case 12 and a rear transmission case 13 connected to the rear part of the engine E, and a front axle frame 14 projects forward from the engine E to form a traveling vehicle body 2. The engine E and the front axle frame The radiator mounted on the vehicle 14 is covered with a bonnet 15, a control unit 16 is formed at the rear of the bonnet 15, and a working device lifting / lowering hydraulic device 17 and a driver's seat 18 are mounted on the rear upper part of the traveling vehicle body 2.

The tractor 11 has front and rear wheels 24, 25, and is configured to be mounted with a rear working machine via a three-point link mechanism or the like (not shown) and lifted by the hydraulic device 17.
The front loader 1 is detachably attached to a left and right mounting frame 20 fixed in the middle of the front and rear of the traveling vehicle body 2, and a pair of left and right masts 3 attached to the mounting frame 20, and the left and right masts 3. A pair of left and right booms 5 connected via a pivot shaft 4, a boom cylinder 6 provided between each mast 3 and a longitudinally intermediate position of the boom 5 to raise and lower the boom 5, and the left and right booms A work tool 7 connected to the tip of 5 for free scooping and dumping; a work tool cylinder 21 provided between the work tool 7 and the boom 5 for scooping and dumping the work tool 7; The stand member 8 pivotally supported on the distal end side of the head member and a stand cylinder 19 for operating the stand member 8 are provided.

Each of the left and right mounting frames 20 includes a plate-shaped mounting body 20a that is mounted across the front mission case 12 and the front axle frame 14, a support body 20b that protrudes left and right outward from the mounting body 20a, and the support body. The left and right mounting bodies 20a are connected by a connecting rod that passes under the engine E. The support body 20c is erected upward from the outer end of 20b.
The support body 20b and the support body 20c are formed of an angle material having a U-shaped cross section, and the support body 20c is formed in a square tube shape by welding a reinforcing material to the lower half, and the upper half is formed by a mast 3. It can be inserted. An engaging part 22 is provided through the pin in the middle part of the column body 20c, and a pin hole is formed in the upper part.

The mast 3 is formed of a flat plate, and an engagement recess 24 that can be engaged with the engagement portion 22 of the support column 20c is formed at a lower portion thereof, and the engagement recess 24 is engaged with the engagement portion 22 in the middle of the upper and lower sides. In this state, a pin hole opposite to the pin hole is formed, and the mast 3 is detachably attached to the mounting frame 20 by inserting the pin 23 into both pin holes.
The left and right stand members 8 are connected to each other, and are pivotally supported via a pivot pin 27 on a mounting bracket 26 fixed to the distal end side of each of the left and right booms 5, and a storage posture B indicated by a solid line in FIG. It can arrange | position to the action attitude | position A shown with a dashed-two dotted line, and can hold | maintain in each attitude | position by penetrating the setting pin 28 in the boom 5. FIG.

By removing the setting pin 28, the stand member 8 can be changed in posture from the action posture A to the storage posture B, and can be suspended from the boom 5 between the action posture A and the storage posture B.
A grounding body 8a is provided at the tip of the left and right stand members 8, and the grounding body 8a can be grounded in the action posture A so that the front loader 1 can be detached from the tractor 11 and can be erected on the ground. The rear upper part of the grounding body 8a is formed in a hook shape that can be engaged with the suspension part Wa of the weight W, and the grounding body 8a also serves as a suspension holder 10 for suspending the weight W.

A base portion of a stand cylinder 19 is pivotally supported by a connecting member 30 that connects the distal end sides of the left and right booms 5, and a cylinder rod of the stand cylinder 19 is connected to the distal end side of the stand member 8, and the stand cylinder 19 is operated. By doing so, the posture of the stand member 8 can be changed from the action posture A to the storage posture B, and can be held at an intermediate position between the action posture A and the storage posture B.
In other words, when the stand member 8 is swung from the action posture A by the stand cylinder 19 with the boom 5 raised to the midway height, the suspension holder 10 moves in an arc and the suspension portion Wa of the weight W is lifted. Can be scooped from the lower front and lifted rearward and upward.

The front axle frame 14 of the traveling vehicle body 2 includes a side plate 14A that is bolted to the left and right side surfaces of the engine E, and a front plate 14B that connects the front ends of the left and right side plates 14A. A weight mounting member 9A for detachably mounting the weight W is provided so as to be able to move forward and backward.
The weight mounting member 9A penetrates the front plate 14B and is slidably inserted into the front axle frame 14 and is fixed to the front ends of the left and right slide members 33. A holding member 34 that can receive the holding portion Wa and a connecting member 35 that connects the left and right slide members 33 in the front axle frame 14 are provided.

Rails 36 are provided on the inner surfaces of the left and right side plates 14A of the front axle frame 14 to guide the left and right slide members 33 so as to be slidable back and forth, and between the front plate 14B and the left and right support members 34. An exit / retreat cylinder 37 is provided so that the weight mounting member 9A can be retracted / retracted by hydraulic pressure.
The weight mounting member 9A, the front axle frame 14, the retracting cylinder 37 and the like constitute weight mounting means for mounting the weight W in a detachable manner.
The weight mounting member 9A has a concave receiving portion 9a formed on the upper surface of each of the left and right receiving members 34, and a screw hole 9b formed on the lower portion.

One weight W is about 100 kilograms or several hundred kilograms, and is formed in a cylindrical shape so that it can roll. Projecting shaft-shaped suspensions Wa are formed at both ends of the weight W shaft, and bolt insertion holes Wb are formed at positions away from the suspensions Wa on both end surfaces.
In this weight W, the suspension portion Wa is received by the receiving portion 9a of the weight mounting member 9A. In this state, a bolt is screwed into the screw hole 9b, and the tip of the bolt is inserted into the bolt insertion hole Wb. . Even if the traveling vehicle body 2 vibrates, the weight W prevents the weight W from being unintentionally detached from the holding portion 9a.

The weight mounting member 9A is projected from the front axle frame 14 by the retracting cylinder 37 when the weight W is mounted, and when the weight W is not mounted, that is, when working with the front loader 1, the retracting cylinder 37 is moved. The receiving member 34 is moved back and arranged close to the front plate 14B.
As shown by the solid line in FIG. 2, the front loader work by the tractor 11 is performed by attaching the mast 3 of the front loader 1 to the mounting frame 20, raising and lowering the boom cylinder 6, and scooping the work tool 7 with the work tool cylinder 21. -Perform dump operation.

When the rear work machine is mounted from the front loader work and the rear work is performed, the setting pin 28 is pulled out with the front loader 1 attached to the tractor 11 to free the stand member 8 from the storage posture B, and the stand cylinder 19 is moved. In operation, as shown in FIG. 1, the suspension portion Wa of the weight W placed on the ground is engaged with the suspension holder 10, and the boom cylinder 6 and / or the stand cylinder 19 are operated to lift the weight W. .
The weight mounting member 9A is protruded forward from the front axle frame 14 via the retracting cylinder 37, the boom cylinder 6 and / or the stand cylinder 19 are operated, and the suspended holding portion Wa of the weight W is attached to the protruding receiving portion 9a. Place. Then, a bolt is screwed into the screw hole 9b of the weight mounting member 9A, and the tip thereof is inserted into the bolt insertion hole Wb of the weight W.

After the weight W is placed and fixed on the weight mounting member 9A, the boom cylinder 6 and / or the stand cylinder 19 are operated to bring the stand member 8 into the acting posture A as shown by a two-dot chain line in FIG. Is then removed from the ground, after which the pin 23 is removed and the work tool cylinder 21 is operated to detach the mast 3 from the mounting frame 20.
FIG. 4 shows a modification of the weight mounting device of the working traveling vehicle, and the weight mounting member 9B also serves as a protector.
The weight mounting member 9B has a pair of left and right plates that are L-shaped when viewed from the side. The corner of the base of the plate is pivotally supported on the left and right side plates 14A of the front axle frame 14 via the support shaft 41, and It can be fixed by passing the bolt 43 through the formed bolt hole 42 and screwing it into the screw holes 44 and 45 of the side plate 14A.

The side plate 14A has two screw holes. When the bolt 43 is screwed into the screw hole 44, the weight mounting member 9B is held in the protector posture shown by the two-dot chain line in FIG. The weight mounting member 9B can be held and fixed in the forward projecting posture shown by the solid line in FIG. A stopper 46 may be provided on the side plate 14A to receive the weight mounting member 9B in a forward projecting posture.
The weight mounting member 9B is formed with one or more recesses on the upper surface when in the forward projecting posture, and this recess serves as a receiving portion 9a, and a plurality of the receiving portions 9a are provided in the front-rear direction. By forming the weight W, the mounting position of the weight W can be changed back and forth, or the weight W can be changed to one having a different diameter, one having a different weight, or a shape other than circular in a side view.

The weight W is formed with a suspension portion Wa, but is not formed with a bolt insertion hole, but instead is formed with a screw hole Wc into which a bolt is screwed, and the receiving portion 9a of the weight mounting member 9B. When the bolt is screwed into the screw hole Wc in a state where the weight W is held on the weight W, the weight W comes into contact with the lower edge of the weight mounting member 9B, and the weight W is held by the holding portion even if the traveling vehicle body 2 vibrates. I try not to unintentionally leave 9a.
The weight mounting member 9B is held in a protector posture when performing a front loader operation, and protects the bonnet 15 from collision when the tractor 11 is close to the truck bed.

In the present invention, the shape of each member and the positional relationship between the front, rear, left, and right in the embodiment are best configured as shown in FIGS. However, it is not limited to the said embodiment, A member, a structure can be variously deformed, and a combination can also be changed.
For example, the stand cylinder 19 is omitted, the stand member 8 is suspended from the boom 5, the suspension fixture 10 is formed of a wire and is hung on the grounding body 8 a, and the weight W is suspended by the wire. May be. At this time, the stand member 8 or the wire is artificially moved back and forth to adjust the front and back position of the suspended weight W, and the boom 5 is lowered by the boom cylinder 6 to place the weight W on the receiving portion 9a. do it.

Further, the weight mounting member 9 </ b> A according to the embodiment may be configured so as to be artificially retracted and retracted with respect to the front axle frame 14 by omitting the retracting cylinder 37.
Further, the supporting column 20c of the mounting frame 20 may be formed of a single plate, and the mast 3 may be formed in a U-shaped cross section that fits into the supporting column 20c.

It is a principal part side view at the time of weight mounting | wearing which shows embodiment of this invention. It is a whole side view of a front loader wearing state. It is a principal part top view at the time of weight mounting | wearing. It is a principal part side view at the time of weight mounting which shows the modification of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front loader 2 Traveling vehicle body 3 Mast 4 Pivot shaft 5 Boom 6 Boom cylinder 7 Working tool 8 Stand member 9 Weight mounting member 9a Receiving part 10 Suspension tool 11 Tractor (traveling vehicle)
19 Stand cylinder 20 Mounting frame A Working posture B Storage posture W Weight Wa Hanging part

Claims (3)

A boom cylinder (6) for connecting the boom (5) to the mast (3) via a pivot shaft (4) and raising and lowering the boom (5) is provided between the mast (3) and the boom (5). The boom (5) is provided with a work tool (7), and the boom (5) is provided with a stand member (8) whose posture can be changed from the acting posture (A) to the stowed posture (B). 1)
A weight mounting for attaching a mast (3) of the front loader (1) in a removable manner to the middle part of the traveling vehicle body (2) is provided, and a weight (W) is detachably attached to the front part. A member (9) is provided;
A suspension part (Wa) is formed on the weight (W), and a suspension tool (10) for suspending the weight (W) via the suspension part (Wa) is provided on the stand member (8) ,
A weight mounting device for a working traveling vehicle, characterized in that the weight mounting member (9) is provided at the front portion of the traveling vehicle body (2) so as to be able to move forward and backward . A stand cylinder (19) is provided between the boom (5) and the stand member (8) to change the position of the stand member (8) from the action posture (A) to the storage posture (B). The weight mounting apparatus of the working traveling vehicle of Claim 1 . A boom cylinder (6) for connecting the boom (5) to the mast (3) via a pivot shaft (4) and raising and lowering the boom (5) is provided between the mast (3) and the boom (5). A working tool (7) is provided at the tip of the boom (5), and a stand member (8) whose posture is freely changeable from the acting posture (A) to the stowed posture (B) by a stand cylinder (19) on the boom (5). To construct the front loader (1),
A weight mounting for attaching a mast (3) of the front loader (1) in a removable manner to the middle part of the traveling vehicle body (2) is provided, and a weight (W) is detachably attached to the front part. The member (9) is provided so that it can be moved forward and backward.
The weight (W) is formed in a cylindrical shape, and suspension portions (Wa) are formed at both ends of the shaft. The weight mounting member (9) receives the suspension portions (Wa) at both ends of the weight (W). Forming a holding part (9a) to hold,
A suspension device (10) for engaging the suspension portion (Wa) of the weight (W) to suspend the weight (W) is provided above the grounding body (8a) of the stand member (8). A weight mounting device for a working traveling vehicle characterized by the above.

Images