JP4809285B2 - ROPS device for traveling vehicle - Google Patents

Description

  The present invention relates to a lops device equipped in a traveling vehicle such as a tractor.

In this type of prior art, for example, as disclosed in Patent Document 1, a pair of left and right cylindrical lops lower bodies standing on the rear of a traveling vehicle, and left and right left and right inserted into the lops lower body so as to freely move up and down. It has a portal-type lops upper body having a pair of upper struts and holding means for holding the lops upper body at least at a raised position, and the lops upper body is arranged at an upper position when working with a tractor. When storing, the lower body of the lops can be placed at a lower position.
The holding means is formed of a pin. The pin penetrates the lower body of the lops and the upper body of the lops so that the upper body of the lops can be held at the raised position and the lowered position.
JP 2004-182131 A

In the prior art, since the Lope upper body has to be raised and lowered artificially, there is a large gap between the Lope lower body, and even if the Lope upper body is held by the Lope lower body through the pin, It may be loose.
Therefore, it is conceivable to use a bolt as the holding means and fasten the Lopp upper body while pressing it against the inner surface of one side of the cylindrical Lope lower body to eliminate back and forth play. However, pressing the upper body of the lops against one inner surface of the lower body of the cylindrical lops raises another problem that the gap on the opposite surface side becomes larger and dust and rainwater easily enter there.

An object of the present invention is to provide a lops device for a traveling vehicle that can solve such problems of the prior art.
In the present invention, the Lope upper body is pressed against one inner surface of the cylindrical Lope lower body so as not to be loose, and the upper opening of the Lope lower body on the opposite side to the one inner surface can be closed. An object of the present invention is to provide a lops device for a traveling vehicle.

Specific means for solving the problems in the present invention are as follows.
First, a pair of left and right cylindrical lops lower bodies 3 erected on the traveling vehicle body 2, a portal-type lops upper body 4 in which left and right struts 4 a are inserted in the left and right lops lower bodies 3 so as to be movable up and down, In a lops device for a traveling vehicle having holding means for holding the lops body 4 at least at a raised position,
The holding means has a fastening bolt 5 that fastens the lower body 4 while pressing the upper body 4 against the inner surface of the lower body 3, and an upper portion of the lower body 3 opposite to the inner surface near the upper end of the lower body 3. A cover member 6 for closing the opening 3a is provided.

Second, a support member 7 is provided in the vicinity of the upper end of the lops lower body 3, and the support member 7 supports the cover member 6 so as to be movable in the distance direction of the lops upper body. A biasing means 8 for biasing is provided.
Thirdly, the fastening bolt 5 penetrates the lower body 3 and the lower body 4 and has a large diameter portion 5a on the base end side, a small diameter portion 5b in the middle, and a male screw portion 5c at the distal end. A step portion 5d is provided between the portion 5a and the small-diameter portion 5b, the large-diameter portion 5a penetrates one side of the lops lower body 3 and the step portion 5d abuts one side outer surface of the lops upper body 4; It is characterized by.

Fourthly, the fastening bolt 5 and the lops lower body 3 are connected by a cable body 9, and the length of the rope body 9 is left at the side of the lops lower body 3 when the fastening bolt 5 is pulled out. It is characterized by being.
Fifth, the nut receiving member 11 is provided on the outer surface of the lops lower body 3 to prevent the nut 10 screwed with the fastening bolt 5 from dropping off.
Sixth, a damper 12 is provided between the lops lower body 3 and the lops upper body 4 to assist the rise of the lops upper body 4.
"Action"
According to the characteristic configuration, the LOSS device has the following effects.

The portal-type lops upper body 4 is held via the holding means at a position where it is raised with respect to the cylindrical lops lower body 3. This holding means is formed by a fastening bolt 5 and regulates the loose body 4 from rattling with respect to the lower body 3 by fastening the lower body 4 while pressing the upper body 4 against the inner surface of the lower body 3.
Then, by pressing the lower body 4 against the inner surface of the lower body 3, a large gap is formed in the upper opening 3 a of the lower body 3 on the opposite side, but the gap is closed by the cover member 6.

The cover member 6 is supported by a support member 7 and can move in the direction of the Lopse body, and is urged by the urging means 8 toward the Lopse body 4 so that the size of the gap changes. Can keep track of the situation.
The fastening bolt 5 of the holding means has a large diameter portion 5a that penetrates one side of the lops lower body 3 and a step portion 5d that contacts the outer surface of one side of the lops upper body 4, whereby the lops upper body 4 Press to the inner surface of one side to make it a fastened state without backlash.
Even if the fastening bolt 5 is released from the fastened lower body 3 by releasing the fastened state, the end of the rope 9 remains on the lower side of the lower body 3 due to the rope 9 connected to the lower body 3 and is not completely removed. Is prevented.

Further, the nut 10 to be screwed with the fastening bolt 5 is also prevented from being lost by the nut receiving member 11 provided on the outer surface of the lower body 3, and the screwing with the fastening bolt 5 is simple.
The damper 12 provided between the lops lower body 3 and the lops upper body 4 assists when raising the lops upper body 4 artificially.

  According to the present invention, it is possible to fasten the Lopp upper body to one side inner surface of the cylindrical Lops lower body with a bolt and fasten it in a state free from backlash, and to cover the upper opening of the Lopp lower body on the side opposite to the one side inner surface. It can be closed with.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1-7, the code | symbol 1 has shown the lops apparatus with which the traveling vehicle body 2 of the tractor illustrated as a traveling vehicle was mounted | subjected, and it divides roughly and a pair of right-and-left cylindrical lops lower bodies 3 and a portal-type lops upper body 4 Have
4 to 7, the tractor connects the engine 15, the clutch housing 16, the transmission case 17, and the like to the front and rear, and the left and right rear axle cases 18 project from the transmission case 17 to form the traveling vehicle body 2. The driver's seat 19 is disposed above, the rear wheels 20 are mounted on the rear axle protruding from the left and right rear axle cases 18, and the left and right rear wheel fenders 21 are fixed to the left and right rear axle cases 18. Reference numeral 22 indicates left and right steps.

1 to 4, the left and right Lobs lower body 3 is formed in a rectangular tube shape having a top opening 3a by welding a channel material 3c to a flat plate 3b, and a substrate 3d is welded to the lower ends thereof via bolts. The rear axle case 18 is detachably fixed in an upright manner.
In particular, the flat plate 3 b of the left and right lops lower body 3 is used for mounting the left and right rear wheel fenders 21, mounting the back wall behind the driver's seat 19, and the like.
The lops upper body 4 is formed by bending a rectangular tube material into a U-shape in a front view, and left and right support columns 4a are inserted into the left and right lops lower bodies 3 so as to be movable up and down. Reinforcing plates 4b are welded to the front and rear surfaces of the lower end of each column 4a, and a cylinder 23 for inserting a bolt is provided so as to pass through these. A fastening bolt is provided in the cylinder 23 and above the column 4a. 5 Insertion holes 24D and 24U are formed. In addition, the cylindrical body 23 may be provided also on the upper part of the support | pillar part 4a, and you may make it form the hole 24U.

Between the upper part of the left and right lops lower body 3 and the lops upper body 4, holding means and a cover member 6 constituted by fastening bolts 5 are provided, and between the left and right lops lower body 3 and the lops upper body 4. A damper 12 is provided.
Cylindrical members 32F and 32R are concentrically fixed on the front and rear surfaces of the upper portions of the left and right Lobs lower bodies 3, and front and rear through holes 33F and 33R are formed by the holes formed concentrically with the inside of the Lops lower body 3. The front through-hole 33F has a larger diameter than the rear through-hole 33R, and the rear through-hole 33R has the same diameter or a slightly larger diameter than the holes 24D and 24U.

1 and 2, the fastening bolt 5 of the holding means passes through the front through hole 33F, the hole 24D and the rear through hole 33R concentric. This fastening bolt 5 has a large-diameter portion 5a on the base end side, an intermediate small-diameter portion 5b, and a male screw portion 5c at the tip, and has a step portion 5d between the large-diameter portion 5a and the small-diameter portion 5b. A knob portion 5e is formed at the outer end of the large diameter portion 5a, and a pin insertion portion 5f is formed at the outer end of the male screw portion 5c.
When the fastening bolt 5 is inserted from the front through-hole 33F side and the nut 10 is screwed into the male screw portion 5c protruding from the rear through-hole 33R, the large-diameter portion 5a is connected to one side of the LOSS lower body 3 (front The step portion 5d is in contact with and pressed against the outer surface of one side (front side wall) of the lops upper body 4, and the lower body 4 is pressed against the inner surface of the opposite side of the lower body 3 (rear side wall). Then, the lower body 4 is fastened to the lower body 3 with no looseness.

1, 2, and 4, the nut receiving member 11 is provided on the back surface of the rear side cylinder member 32 </ b> R or the lower body 3. The nut receiving member 11 has a bottom plate 11b fixed to a substantially U-shaped member 11a in plan view. The member 11a abuts against two surfaces of the nut 10 to prevent rotation, and the bottom plate 11b prevents the nut 10 from falling off. is doing.
A rear lower portion of the nut receiving member 11 is a drain hole 11c, and an insertion hole 11d is formed on the back surface, and a pin insertion portion 5f of the fastening bolt 5 protrudes. This protruding pin insertion portion A retaining pin 35 is inserted into 5f to prevent the fastening bolt 5 from coming off.

A cable body 36 such as a wire is connected to the retaining pin 35, and this cable body 36 is coupled to a mounting member 37 fixed to the side surface of the lops lower body 3 so as to prevent the retaining pin 35 from being lost. It has become. The mounting member 37 also serves as a reinforcement for bolt-connecting the lops lower body 3 and the rear wheel fender 21.
Further, a cable body 9 such as a wire is also connected to the knob 5 e of the fastening bolt 5. The cable body 9 is connected to a plate member 38 fixed to the front of each of the left and right lops lower bodies 3 so as to prevent the retaining pins 35 from being lost.

The plate member 38 is screwed to a stay 39 fixed to a position below the cylindrical member 32F of the lower body 3F, and the right side plate 38 is provided between the right lower body 3 and the front part of the right step 22. It is fastened together with the rear end of the handrail member 40.
Even if the fastening bolt 5 is pulled out from the hole 24D of the lower body 4 of the rope body 9, the tip remains in the front through hole 33F of the lower body 3 (indicated by a two-dot chain line in FIG. 1). The length is set so that the fastening bolt 5 can be easily re-penetrated as well as prevented from being lost.
Further, since the cable body 9 is connected to the fastening bolt 5 from the lower side, the fastening bolt 5 inclines so that the knob portion 5e is downward with the tip remaining, and enters the front through-hole 33F unintentionally. It is prevented from going.

A cover member 6 is provided above the cylindrical member 32F in the vicinity of the upper end of the lops lower body 3. When the Lopse upper body 4 is pressed against the inner surface of one side (back wall) of the Lopse lower body 3, the gap between the upper opening 3 a of the Lopse lower body 3 and the periphery of the Lopse upper body 4 on the opposite side (front wall) Are gathered to form a large gap, and a cover member 6 for closing the gap is provided on the front side.
The cover member 6 is formed by bending a plate material into a substantially L shape in a side view to form an attachment portion 6a and a contact portion 6b. The attachment portion 6a has an insertion hole 6c, and the tip of the contact portion 6b. Is a curved surface 6d projecting toward the lops body 4 side.

A seat plate 26 or a nut is fixed to the front wall of the lower body 3, and a support bolt (support member) 7 is screwed to the seat plate 26, and the insertion hole 6 c of the cover member 6 is fitted into the support bolt 7. A coil spring as the biasing means 8 is interposed between the head of the support bolt 7 and the mounting portion 6 a and is fitted to the support bolt 7.
The cover member 6 is supported by a support bolt 7 so as to be movable in the near direction of the lops upper body, and is biased toward the lops upper body 4 by the biasing means 8. It always abuts on the support column 4a so as to be slidable.

Instead of the support bolt 7, a stud bolt or a pin may be planted on the seat plate 26, and it is preferable to interpose the collar 27 between the support bolt 7, the cover member 6 and the biasing means 8. .
When the fastening bolt 5 is inserted into the lower hole 24D in order to raise the lower body 4 relative to the lower body 3 and place it at a higher position, the reinforcing plate 4b at the lower end of the support column 4a is in contact with the curved surface 6d. The cover member 6 is retracted against the urging means 8, and when the fastening bolt 5 is inserted into the upper hole 24U in order to lower the lops upper body 4 and dispose it at the low position, the support 4a is reinforced. Since there is no plate 4 b, the cover member 6 is advanced by the urging means 8 and comes into contact with the lower body 4.

Even when the lops upper body 4 is arranged at a high position (position shown in FIG. 5) for tractor operation, or when it is arranged at a low position (position shown by a solid line in FIG. 6) for storing the tractor, etc. 6 closes the gap on the side of the upper opening 3a that is pressed by the fastening bolt 5, prevents rainwater and dust from entering, and can follow the backlash even when the top body 4 is raised or lowered.
The lops upper body 4 is heavy and requires a large force to raise it, and therefore a damper 12 is provided on the left and right sides (right side) of the lops device 1. The damper 12 is formed by connecting two dampers having a short extension / contraction length, but may be a single one having a long extension / contraction length.

The lower end of the damper 12 is connected to a stay 43 fixed to the lower body 3 via a pivot member, the upper end is connected to the upper portion of the upper body 4 via a pivot member 44, and the middle part is connected to the lower body 3. It is guided by a fixed support member 45.
The damper 12 can substantially support the weight of the lops upper body 4, and is assisted by the damper 12 when raising the lower body 4, and requires a force against the damper 12 when lowering.
In the present invention, the shape of each member and the positional relationship between the front, rear, left, and right in the above 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 left and right lops lower body 3 is formed in a round tube shape, and the lops upper body 4 is formed of a round pipe, and the insertion direction of the fastening bolt 5 and the arrangement of the cover member 6 are performed from the back side or the side surface side. In place of the fastening bolt 5, a through pin that penetrates the lower body 3 and the lower body 4 and a bolt that presses the lower body 4 against the lower body 3 may be used.

It is a cross-sectional side view of the principal part which shows embodiment of this invention. It is a whole sectional side view. It is a front view of the principal part. It is a disassembled perspective view. It is the side view with which the tractor was mounted | worn. It is the same rear view. It is the same top view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lopse apparatus 2 Traveling vehicle body 3 Lopse lower body 4 Lops upper body 5 Fastening bolt (holding means)
6 Cover member 7 Support member (support bolt)
8 Biasing means 9 Cable body 10 Nut 11 Nut receiving member 12 Damper

Claims (6)

A pair of left and right cylindrical lops lower bodies (3) erected on the traveling vehicle body (2), and a portal-type lops upper body in which left and right struts (4a) are inserted in the left and right lops lower bodies (3) so as to be movable up and down. In the lops device for a traveling vehicle having (4) and holding means for holding the lops upper body (4) at least at the raised position,
The holding means has a fastening bolt (5) that fastens the Lopp upper body (4) while pressing it against one inner surface of the lower lop body (3), and the one side inner surface near the upper end of the lower lop body (3). A lops device for a traveling vehicle, characterized in that a cover member (6) for closing the upper opening (3a) of the opposite lops lower body (3) is provided.   A support member (7) is provided in the vicinity of the upper end of the lops lower body (3). The support member (7) supports the cover member (6) so as to be movable in the direction of the lops upper body, and the cover member (6). 2. A lops device for a traveling vehicle according to claim 1, further comprising an urging means (8) for urging the boss toward the lops body (4).   The fastening bolt (5) passes through the lower body (3) and the upper body (4), and has a large-diameter portion (5a) on the base end side, a small-diameter portion (5b) in the middle, and a male screw portion (5c) at the tip. ) And a step portion (5d) between the large-diameter portion (5a) and the small-diameter portion (5b), and the large-diameter portion (5a) penetrates one side of the lops lower body (3). And the said step part (5d) is contact | abutted with the one side outer surface of a lops upper body (4), The lops apparatus of the traveling vehicle of Claim 1 or 2 characterized by the above-mentioned.   The fastening bolt (5) and the lower body (3) are connected by a cable body (9). When the fastening bolt (5) is pulled out, the tip of the rope body (9) is connected to the lower body (3). 4. The lops device for a traveling vehicle according to claim 3, wherein the length is left on the side.   The nut receiving member (11) for preventing the nut (10) screwed with the fastening bolt (5) from being provided on the outer surface of the lower body (3). A lops device for traveling vehicles.   The damper (12) which assists the raising of the lops upper body (4) is provided between the lops lower body (3) and the lops upper body (4). The lops device for a traveling vehicle according to claim 1.

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