JP3745814B2 - Elevator for catcher box - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a configuration of an elevating mechanism that enables a catcher box that collects grass cut by a mower mounted on an abdomen of a traveling machine body to move up and down.
[0002]
[Prior art]
Conventionally, a mower is attached to the abdomen of the traveling aircraft, and the cut grass cut by the mower is sent to the catcher box at the rear by a slot placed on the side, and when the catcher box is filled with cut grass, A part is opened and released. Moreover, although the cut grass can be easily discharged to a low position, it cannot be placed on the truck bed or discharged to the inlet of the incinerator, so a lifting device for the catcher box is required. Generally, the lifting device has a rail body standing upright at the rear of the machine body, a hoisting machine is disposed on the upper part of the rail body, the wire end of the hoisting machine is fixed to the catcher box, and the wire is wound up. The catcher box can be raised along the rail body. Moreover, the technique of rotating a parallel link using a hydraulic cylinder and raising a catcher box, or arrange | positioning a hydraulic cylinder along a rail and raising a catcher box has been proposed.
[0003]
[Problems to be solved by the invention]
However, in a lawnmower that winds up the wire and raises the catcher box, the hoisting machine is placed at the top of the rail body, so the weight of the hoisting machine's drive motor is heavy, and the center of gravity becomes higher. It becomes the structure which worsens stability. Also, in the configuration in which the catcher box is lifted by the hydraulic cylinder, hydraulic piping is required, and if a parallel link is used, it will be longer in the front-rear direction. The higher the cylinder is, the larger the hydraulic cylinder becomes, and the center of gravity moves backward.
[0004]
[Means for Solving the Problems]
The problem to be solved by the present invention is as described above. Next, in order to solve the problem, a catcher box for storing cut grass cut by a mower is disposed at the rear part of the aircraft, and the catcher box is disposed at the rear part of the aircraft. In a configuration in which the catcher box can be lifted by winding the wire, a drive motor that drives the winding is disposed below the rear end of the body frame, The drive motor was disposed between the left and right rear wheels and in front of the rear wheel rear end in a side view.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Next, examples will be described. FIG. 1 is a side view of a lawn mower with a mower attached to the abdomen and a catcher box at the rear, FIG. 2 is a side sectional view showing a lifting mechanism of the catcher box of the present invention, and FIG. 4 is a partial sectional view of the rear view showing the mechanism, FIG. 4 is a partial sectional view of the same raising / lowering mechanism, FIG. 5 is a partial bottom view showing the raising / lowering drive unit, and FIG. 6 is a side view of the catcher box raised. It is.
[0006]
In FIG. 1, an overall configuration of a lawn mower equipped with a mower M and a catcher box B will be described. A mower M is suspended from an abdomen between the front wheels 30 and 30 and the rear wheels 31 and 31 of the tractor, which is a traveling machine body, via an elevating mechanism so that the elevating operation can be performed at the driver's seat. Further, the front part of the mower M is supported by the front support wheel 19, the rear part is supported by the rear guide wheel 22, and the cutting height is adjusted. I can do it.
[0007]
An engine is placed in a bonnet on the front part of the body frame F, and the front wheels 30 and 30 and the rear wheels 31 and 31 are driven via a transmission (not shown) from the engine. Further, power is transmitted from the front axle case to the gear box 20 of the mower M through the universal joint 32, and the gear box 20 is shifted to drive the rotary blade and the lower A. The lower A is disposed on the right side of the seat, the grass cut by the mower M is discharged to the lower A, and the cut grass is conveyed to the catcher box B via the connecting hose 21 by the rotation of the blades of the lower A. The
[0008]
And the said catcher box B is formed in box shape, and is comprised by the substantially diagonal part by the side view, and the front part is made into the front box 23, and the rear part is made into the rear box 24. FIG. A reinforcing frame 26 and a reinforcing frame 27 are reinforced and fixed around the mating portion of the front box 23 and the rear box 24, respectively. The upper portions of the reinforcing frames 26 and 27 are pivotally supported by the pivot shaft 13, and a rotating arm 25 is fixed to the upper end of the reinforcing frame 27. The rotating arm 25 protrudes forward, and the link 11, The arm 12 is connected to the opening / closing lever 10 via the interlocking wire 71. The opening / closing lever 10 is disposed on the right side of the operator, and the opening / closing lever 10 is fixed to a pivot shaft pivotally supported on a rail body 1 described later.
[0009]
The arm 12 is connected to a lock fitting 16 via a link 15, and when the opening / closing lever 10 is rotated upward, the lock fitting 16 is interlocked and rotated downward to release the lock. The lower arm of the rear box 24 is rotated rearward by rotating the rotary arm 25 through the door, and the cut grass stored in the catcher box B is discharged. A lifting mechanism S, which will be described later, is disposed at the rear end portion of the body frame F at the rear of the seat 33, and the catcher box B is fixed via the support stay 18 and the reinforcement stay 17. The lower end portion of the reinforcing frame 26 of the box 23 is fixed, the upper and lower central portions of the front box 23 are fixed to the rear end of the reinforcing stay 17, and the reinforcing stay 17 and the support stay 18 are connected by the vertical stay 70 to be reinforced. The catcher box B is moved up and down using the lifting mechanism S.
[0010]
The lifting mechanism S is configured as shown in FIGS. 2 and 3 and is fitted to the rail body 1. 1 standing on the rear part of the body frame F and inside the rail body 1. The elevator rails 2 and 2, a drive motor 65 that drives the first wire 7 to wind up, and a gantry 3 that is guided by the elevator rails 2 and 2 to move up and down. The catcher box B is raised and lowered by fixing the catcher box B to the rear part of the gantry 3.
[0011]
That is, the lower parts of the rail bodies 1 and 1 are fixed to the rear end portion of the body frame F via the cradle 35 and are reinforced by the stay 36. The pair of left and right rail bodies 1 and 1 are formed in a U shape in cross section and are erected with the open sides facing each other. The height of the upper ends of the rail bodies 1 and 1 is the upper end height when the catcher box B is lowered. The height is approximately the same. On the front surface between the rail bodies 1 and 1, a middle connecting frame 41 is horizontally provided at an upper and lower intermediate position, and an upper connecting frame 40 is horizontally provided at an upper position to integrally connect the left and right rail bodies 1 and 1. is doing. A fixed pulley 42 having an axial center in the front-rear direction is pivotally supported on the rear surface of the upper center of the upper connecting frame 40 at the upper end, and a fastening portion 44 for fixing one end of the first wire 7 to be described later is provided on the right side. Yes. A fastening portion 43 for fastening one end of a second wire 8 to be described later is disposed at the front portion of the upper connection frame 40. Further, guide rollers 45 and 46 that hold the lifting and lowering of the lifting frames 2 and 2 are pivotally supported in the open surface at the upper ends of the rail bodies 1 and 1.
[0012]
A pair of left and right elevating rails 2 and 2 are disposed inside the rail bodies 1 and 1, and the elevating rails 2 are formed to have substantially the same length as the rail body 1 and are at the upper ends of the elevating rails 2 and 2. Are connected by an upper connection frame 47 and the lower ends thereof are integrally connected by using a lower connection frame 48. A pulley 49 having an axial center in the left-right direction is pivotally supported on the right side of the upper connecting frame 47, and a pulley 50 is pivotally supported on the front surface of the lower connecting frame 48 in a substantially central position. Further, guide plates 51 and 51 are fixed on the front surfaces of the elevating rails 2 and 2, and the guide plates 51 and 51 protrude outward and are inserted into the inside from the open surface of the rail bodies 1 and 1. Further, as shown in FIG. 4, support wheels 52 and 52 are pivotally supported at the lower side portions of the elevating rails 2 and 2, and the support wheels 53 and 53 are supported by the guide plates 51 and 51, respectively. 1. The guide roller 45 is in sliding contact with the inner surface, the guide roller 45 is in sliding contact with the outer surface of the lifting rail 2, and the guide roller 46 is in sliding contact with the guide plate 51 so as to serve as a guide during lifting.
[0013]
Further, a frame 3 for fixing the catcher box B is disposed inside the elevating rails 2 and 2 so as to be slidable up and down. The gantry 3 includes a pair of left and right plate bodies 55, 55 and connecting shafts 56, 57, 58 that fix the front vertical position and the rear lower position of the plate bodies 55, 55. The left and right plate bodies 55 and 55 are arranged in parallel using 58. The connecting shafts 56 and 57 connect the front portions of the plate bodies 55 and 55, project sideward from the plate bodies 55 and 55, and pivotally support the support wheels 60 and 61 at the ends. The support wheel 60 is in sliding contact with the rear inner surface of the lifting rail 2, the support wheel 61 is in sliding contact with the front inner surface of the lifting rail 2, and the support wheels 62 and 63 pivotally supported on the front surfaces of the plate bodies 55 and 55 are connected to the lifting rail. 2 is slidably contacted with the inner side surface to serve as a guide when moving up and down. In addition, a fastening portion 64 is disposed at a substantially central position of a horizontal shaft 58 that extends horizontally below the plate body 55, and a second wire 8 is fastened. Is suspended. The support stay 18 that supports the lower portion of the catcher box B and the vertical stay 70 are fixed to the rear part of the plate body 55 so that the catcher box B can be moved up and down together with the gantry 3.
[0014]
Then, the motor case 5 is fixed to the rear lower part of the machine body frame F, and a winding drum 66 having an axial center in the left-right direction is disposed inside the motor case 5, and the winding drum 66 is driven by the drive motor 65. The winder is configured to be driven. The first wire 7 is wound around the winding drum 66, and after the first wire 7 is hung around the fixed pulley 42 on the upper connection frame 40 of the rail body 1, Is hung around the pulley 50 of the lower connection frame 48 of the elevating frame 2, and the end of the first wire 7 is fastened to the fastening portion 44 to suspend the elevating frame 2. On the other hand, the second wire 8 is fastened to the fastening portion 43 on the middle connecting frame 41, the second wire 8 is hung around the pulley 49 on the upper connecting frame 47 of the elevating rail 2, and the lower base 3 is suspended. The fastening portion 64 is fastened.
[0015]
Therefore, when the drive motor 67 is driven and the first wire 7 is wound up, the other end of the first wire 7 is fixed to the upper portion of the rail body 1 so that the pulley 50 rises like a moving pulley. Thus, the elevating rail 2 that supports the pulley 50 is lifted together. As the elevating rail 2 is raised and slid, the pulley 49 winding the middle portion of the second wire 8 is lifted upward, and the second wire 8 has one end on the top of the rail body 1 and the other end. Since it is fixed to the gantry 3, the gantry 3 is raised, and the catcher box B fixed to the gantry 3 is also raised at the same time as shown in FIG. And if it raises to predetermined | prescribed height, the rear box 24 will be opened and the internal cut grass will be discharged | emitted. In this way, the lifting rail 2 is lifted from the rail body 1 erected at the rear of the machine body, and the catcher box B can be lifted up to the upper portion of the lifting rail 2 so that it can be lifted to a high position. However, it can also be set as the structure which excluded the raising / lowering rail 2. FIG.
[0016]
Next, the mounting structure of the drive motor 65 that drives the catcher box B of the present invention to move up and down will be described. A motor case 5 is disposed below the rail bodies 1 and 1 as shown in the bottom view of FIG. The motor case 5 is composed of a side plate 5a and a rear plate 5b, and on the front surface of the rear plate 5b, the drum support 67 and the center support 68 are projected forward from the left side toward the front, and the rear portions of the rail bodies 1 and 1. The lower part is covered. As shown in FIGS. 2 and 3, both side portions of the left and right side plates 5a and 5a are bent forward and fixed to the side surface of the rail body 1, and fitting holes 5c and 5d are formed in front and lower portions of the side plates 5a and 5a. The drive motor 65 is fitted and fixed to the fitting hole 5c and the central support 68, and the winding drum 66 is pivotally supported by using the fitting hole 5d and the drum support 67. is doing. Accordingly, the take-up drum 66 and the drive motor 65 are disposed between the rear wheels 31 and 31 in a side view below the rear portion of the body frame F, in front of the rear end surface of the rail body 1 and on the rear wheels. It is arranged in front of the rear end of 31.
[0017]
Further, as shown in FIG. 5, the fixing portions 72, 72 protrude laterally from the upper portions of the side plates 5 a, 5 a of the motor case 5, and the outer periphery of the lower portion of the motor case 5 is projected to the fixing portions 72, 72. The cover 69 to be mounted is screwed. The cover 69 is used to cover the tail of the drive motor 65 and the pivotal support of the winding drum 66. In this way, the rear of the drive motor 65 is double protected by the rear plate 5b of the motor case 5 and the case 69. Then, when the cut grass in the catcher box B is discharged, the catcher box B is raised above the loading platform such as a truck and the body is moved backward. The wheel 31 or the rail body 1 hits, and the motor motor 5 prevents the drive motor 65 from coming into direct contact.
[0018]
Further, as shown in FIG. 2, a partition body 9 made of rubber or cloth, a synthetic resin plate, a metal plate, or the like is suspended below the front portion of the upper connection frame 40 of the rail bodies 1 and 1. The lower end of the partition 9 is fixed to the front surface of the middle connecting frame 41. In this way, the partition body 9 is disposed between the left and right rail bodies 1 and 1 so as to partition between the lifting mechanism S and the driver's seat 33, and the catcher box is lifted to collect the interior. When discharging grass and cutting grass, it prevents wind lawn from splashing to the driver's seat and getting down to the operator to keep the environment during discharging work good. . In addition, the operator is prevented from accidentally approaching the lifting device. In addition, it is preferable that the partition 9 is made of a transparent plate, a net, or the like so that the rear side can be visually recognized. Moreover, the rail bodies 1 and 1 can be reinforced by giving the partition body 9 rigidity.
[0019]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained. In other words, the drive motor is disposed between the left and right rear wheels in a side view, and is disposed in front of the rear end of the rear wheel. Since the rear wheel abuts before the drive motor, the drive motor can be protected without being damaged. Also, unlike the configuration where the drive motor is arranged above the rail that guides the raising and lowering of the catcher box, it is arranged below the fuselage frame, so the center of gravity is lowered and the weight balance of the fuselage can be kept stable. This will increase the driving stability and increase the space above the driver's seat.
[Brief description of the drawings]
FIG. 1 is a side view of a lawn mower with a mower attached to the abdomen and a catcher box attached to the rear.
FIG. 2 is a side sectional view partially showing a lifting mechanism of a catcher box according to the present invention.
FIG. 3 is a rear sectional view partially showing the lifting mechanism of the present invention.
FIG. 4 is a side sectional view partially showing the lifting mechanism.
FIG. 5 is a partial bottom view showing an elevating drive unit.
FIG. 6 is a side view of the catcher box in a raised state.
[Explanation of symbols]
B Catcher box F Airframe frame M Mower S Lifting mechanism 1 Rail body 2 Lifting rail 31 Rear wheel 65 Drive motor

Claims (1)

A catcher box that stores the cut grass cut by the mower is placed at the rear of the aircraft, and the catcher box is supported up and down along a rail that stands on the rear of the aircraft, and the catcher box can be raised by winding the wire. In this configuration, a drive motor that drives winding is disposed below the rear end of the fuselage frame, and the drive motor is disposed between the left and right rear wheels and in front of the rear wheel rear end in a side view. A lifting device for a catcher box, characterized in that it is provided.

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