JP2007107296A - Mounting member of working device and operation machine equipped therewith - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide mounting members of a working device capable of contemplating the reduction of a cost and the miniaturization of a runner while using a common motor for a plurality of kinds of detachable working devices and an operation machine equipped with them. <P>SOLUTION: The working device is equipped with an arm 15 having the front end section detachable to a snow removing machine 3 while the rear end section is connected to a main frame 8, a holding section 16 mounted to the front end section of the arm 15 and a motor 18 having an output shaft J12 detachable to an input shaft J8 of the snow removing machine 3 while it is held by the holding section 16, and the holding section 16 is so constituted that the front end section of the arm 15 is put on the snow removing machine 3 to make it possible to connect the output shaft J12 of the motor 18 to the input shaft J8 of the snow removing machine 3 and that the motor 18 can be positioned to hold. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a technique for mounting a working device such as a snowplow and a mower on a self-propelled traveling body.

  2. Description of the Related Art Conventionally, as the work device, one that is configured to be detachable from a self-propelled traveling body such as a tractor is known. In general, this type of work device is attached to the traveling body at a predetermined interval via an attachment member such as an arm in order to prevent interference with the traveling body.

  The working device is configured to rotationally drive a driving object such as a snow removing auger or a mowing blade by transmitting the rotational driving force of the motor to the input shaft.

  Specifically, a working device is known in which a motor output shaft is directly connected to the input shaft. However, in this work device, a motor is required for each of a plurality of types of work devices that are attached to and detached from the attachment member, and the work device itself is expensive. Here, it is conceivable that the output shaft and the input shaft can be freely attached and detached, and the motor can be used in common in a plurality of work devices. Each time the work device is replaced, the motor connected to the traveling body via wiring or the like must be attached to another work device, which takes time and labor for the motor installation work and wiring. Workability is poor.

  On the other hand, for example, as shown in Patent Document 1, in a suction type snowplow in which a driving vehicle (running body) and a suction type snow removal device (working device) are connected at a predetermined interval via a link (attachment member). The work output propeller shaft connected to the drive source (motor) provided in the drive vehicle extends to the suction snow removal device and is detachably attached to the rotation shaft (input shaft) of the suction snow removal device via the coupling. What is connected is also known.

According to the suction-type snow removal device of Patent Document 1, the operation output propeller shaft extending from the drive vehicle is attached to the input shaft so as to be spanned between the suction-type snow removal device, and the link is attached to the link. A common drive source can be used for a plurality of types of work devices to be attached and detached.
JP 58-160417 A

  However, in the technique of Patent Document 1, although a common motor can be used for a plurality of types of work devices attached to and detached from the mounting member, a work output shaft is required between the traveling body and the work device. Therefore, there is a problem that the cost increases.

  Furthermore, in the technique of Patent Document 1, since it is necessary to secure a large space in the traveling body for providing the motor, it is difficult to downsize the traveling body.

  The present invention has been made in view of the above problems, and mounting a work device that can reduce costs and reduce the size of a traveling body while using a common motor for a plurality of types of work devices to be attached and detached. It aims at providing a member and a working machine provided with this.

  In order to solve the above-described problems, the present invention provides a work device that drives a driven object by transmitting a rotational driving force of a motor to an input shaft with a predetermined interval from a self-propelled traveling body. A member for attachment, wherein one end is connected to the traveling body and the other end is detachably attached to the working device, and the other end of the arm is provided. A holding unit, and a motor having an output shaft that is held by the holding unit and is detachable from the input shaft, and the other end of the arm is attached to the working device. Thus, the work device mounting member is characterized in that the motor is positioned and held so that the output shaft of the motor can be connected to the input shaft of the work device.

  According to the present invention, since the output shaft of the motor mounted on the holding portion and the input shaft of the work device mounted on the arm can be connected, it is common to a plurality of types of work devices attached to and detached from the arm. A motor can be used.

  Furthermore, in the present invention, since the work device can be driven by the motor held at the end (holding portion) of the arm, it is not necessary to arrange the motor on the traveling body itself, and the traveling body can be downsized. Can be planned.

  In the present invention, by attaching the working device to the end of the arm that holds the motor, the input shaft of the working device and the output shaft of the motor can be directly connected. Compared to the case where a special configuration such as a shaft for driving force transmission is required, the cost can be reduced, and the space between the work device and the traveling body can be effectively utilized as much as the shaft can be omitted. can do.

  Therefore, according to the present invention, it is possible to reduce the cost and reduce the size of the traveling body while using a common motor for a plurality of types of work devices to be attached and detached.

  The arm may be detachably attached to the traveling body, but the arm is preferably configured to be detachable from the traveling body.

  According to this structure, when not using a working device, a traveling body can be made into a compact form by removing an arm.

  In the attachment member of the working device, the arm is supported to be swingable about a horizontal axis with respect to the traveling body, and is provided between the traveling body and the arm, and the arm is supported with respect to the traveling body. It is preferable to further include a drive unit that swings.

  According to this configuration, the working device can be moved up and down by the drive unit.

  Furthermore, it is preferable that a link member provided between the traveling body and the working device is provided so that the posture of the working device is maintained during the swinging motion of the arm.

  According to this structure, the said working device can be raised / lowered, maintaining the attitude | position of a working device with a link member.

  In addition, the present invention provides a work machine comprising the mounting member, a working device and a traveling body connected to each other with a predetermined interval by the mounting member, and a revolving body that is rotatably mounted on the traveling body. provide.

  According to this configuration, a plurality of types of work devices can be attached to the work machine by the attachment member, and these work devices can be driven by a common motor.

  In the work machine, it is preferable that the arm is swingably supported around a horizontal axis with respect to an attachment portion to which the earth discharging blade of the traveling body is attached.

  According to this configuration, the mounting portion for the earthing blade can also be used for mounting the arm, so that it is not necessary to make a special design change or the like on the traveling body in order to mount the arm.

  ADVANTAGE OF THE INVENTION According to this invention, cost reduction and size reduction of a traveling body can be achieved, using a common motor for several types of working devices with which it can be attached or detached.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a side view showing the overall configuration of a hydraulic excavator equipped with a snowplow according to the present invention. FIG. 2 is a partial cross-sectional plan view illustrating a configuration of a lower traveling body, an attachment member, and a snowplow of the hydraulic excavator in FIG. 1.

  Referring to the drawings, a hydraulic excavator 1 as an example of a work machine connects an excavator body 2, a snow remover (working device) 3, and the excavator body 2 and the snow remover 3 with a predetermined interval. The mounting member 4 is provided.

  The excavator body 2 is provided with a lower traveling body 5, an upper revolving body 6 that is pivotably mounted on the lower traveling body 5, and an upper swing body 6 that can be raised and lowered. And the attached attachment 7.

  The lower traveling body 5 includes a main frame 8 on which the upper swing body 6 is mounted, and crawlers 9 disposed on both sides of the main frame 8, and rotates a crawler belt 9a wound around these crawlers 9. It is possible to travel by. In the following description, the longitudinal direction of the crawler 9 is the front-rear direction, and the direction in which the crawlers 9 face each other is the left-right direction.

  The main frame 8 is formed with a mounting portion 10 for attaching a soil removal blade (not shown) extending forward.

  Specifically, the mounting portion 10 includes a pair of left and right arm brackets 11a and 11b, and a cylinder bracket 12 disposed between the arm brackets 11a and 11b. A rod 14a of a hydraulic cylinder (drive unit) 14 is supported on the cylinder bracket 12 so as to be swingable about an axis J1 extending in the left-right direction.

  On the other hand, the mounting member 4 is supported by the arm brackets 11a and 11b.

  3 is a cross-sectional view taken along line III-III in FIG.

  2 and 3, the mounting member 4 includes an arm 15 supported by the arm brackets 11a and 11b, a holding portion 16 provided at a distal end portion (front end portion) of the arm 15, and a holding portion. A link 17 supported between the portion 16 and the cylinder bracket 12 and a motor 18 attached to the holding portion 16 are provided.

  The arm 15 includes a pair of left and right arm plates 19a and 19b, and a stay 20 that connects the arm plates 19a and 19b in the middle in the longitudinal direction.

  The arm plates 19a and 19b are pivotally supported around the horizontal axis J2 and the horizontal axis J3 extending to the left and right with respect to the arm brackets 11a and 11b, respectively, and the arm plates 19a and 19b are armed by inserting and removing these horizontal axes J2 and J3. The brackets 11a and 11b are detachable.

  The stay 20 includes a cylinder bracket 20a extending left and right and extending rearward from a substantially central position of the left and right. The cylinder bracket 20a is swingable about an axis J4 in which the cylinder body 14b of the hydraulic cylinder 14 extends left and right. It is supported. Therefore, as the rod 14a of the hydraulic cylinder 14 expands and contracts, the arm 15 swings around the horizontal axes J2 and J3.

  FIG. 4 is a rear view showing the holding portion 16 of FIG.

  2 to 4, the holding portion 16 is supported so as to be swingable about a pair of left and right axes J10 and J11 with respect to the distal ends of the arm plates 19a and 19b. These axes J10 and J11 are arranged on the same axis extending in the left and right directions.

  Specifically, the holding portion 16 includes a frame-shaped frame 21 supported by the axes J10 and J11 between the arm plates 19a and 19b, and a mounting plate 22 fixed to the frame-shaped frame 21. .

  The frame-shaped frame 21 includes a U-shaped bottom plate portion 21a that opens downward, a side wall portion 21b that is folded back at a right angle along the outer edge of the bottom plate portion 21a, and the side wall portion 21b to the bottom plate portion 21a. A pair of left and right leg portions 21c extending downward is provided, and these leg portions 21c are pivotally supported by the arm plates 19a and 19b by the axes J10 and J11, respectively.

  A pair of left and right link brackets 23 are formed to extend rearward at the right position of the bottom plate portion 21a. The link 17 is supported such that its rear end is swingable about the axis J1 with respect to the cylinder bracket 12 and its front end is swingable about the axis J6 with respect to the link bracket 23. A parallel link mechanism is formed by the arm plates 19a and 19b. Therefore, the holding portion 16 moves up and down while maintaining the posture according to the swinging motion of the arm plates 19a and 19b (while preventing the tilting back and forth).

  A connecting column 24 is erected on the upper portion of the side wall portion 21b. The connecting column 24 is swingably and detachably attached to a snow remover 3 described later by a connecting shaft J7 extending in the left-right direction.

  On the other hand, the mounting plate 22 is fixed to the bottom plate portion 21a by a plurality of bolts B1 so as to straddle three pieces of the U-shaped bottom plate portion 21a.

  The mounting plate 22 is formed with a through-hole 22a penetrating in the front-rear direction, and the motor 18 is attached to the edge of the through-hole 22a with a bolt B2. In this attached state, the output shaft J12 of the motor 18 is led forward through the through hole 22a (see FIG. 2).

  On the other hand, with reference to FIGS. 1 to 3, the snow remover 3 includes a main body cover 25 and a snow removal mechanism 26 accommodated in the main body cover 25.

  The main body cover 25 includes an introduction part 27 that opens forward, a collection part 28 that communicates rearward from the introduction part 27 and whose rear opening is closed by a back plate 28a, and a chute part that extends upward from the collection part 28. 29, and constitutes a route for discharging the snow introduced from the introducing portion 27 upward through the collecting portion 28 and the chute portion 29.

  The snow removal mechanism 26 includes an auger 30 provided in the introduction portion 27, an input shaft J8 extending rearward from the introduction portion 27 through the back plate 28a, and a rotational driving force of the input shaft J8 to the auger 30. A gear 31 for transmission and a blower fan 32 fixed to the rear portion of the input shaft J8 are provided.

  The auger 30 includes a shaft J9 extending in the left-right direction and an auger blade 33 fixed to the shaft J9. The auger blade 33 sweeps forward snow backward (collection unit 28 side) by the auger blade 33 according to the rotational drive of the shaft J9. It is like that.

  The gear 31 converts a rotational driving force around the input shaft J8 into a rotational driving force around the axis J9 and transmits it to the shaft J9.

  The blower fan 32 is disposed in the collecting unit 28, and the snow blown up by the auger blade 33 in accordance with the rotational drive of the axis J9 is jumped upward and jetted upward through the chute 29. It is like that.

  The main body cover 25 includes a pair of left and right mounting brackets 34a and 34b extending rearward from the collecting portion 28, and an upper bracket 35 (see FIG. 5) extending rearwardly from the introduction portion 27 above the mounting brackets 34a and 34b. 1).

  The mounting brackets 34a and 34b are spaced apart from each other by a distance that allows the arm plates 19a and 19b to be sandwiched from the left and right outer sides. The mounting brackets 34a and 34b can be swingably and detachably attached to the arm plates 19a and 19b by the shaft J10 and the shaft J11, respectively.

  That is, as shown in FIG. 4, the shaft J10 passes through the mounting bracket 34a, the arm plate 19a, and the right leg 21c, and nuts N1 are fastened to both the left and right sides to hold these three members together. . In this state, the mounting bracket 34a, the arm plate 19a, and the frame-like frame 21 are swingable about the axis J10. On the other hand, the mounting bracket 34a can be removed from the arm plate 19a by removing the nut N1 and pulling out the shaft J10.

  Similarly, the shaft J11 passes through the mounting bracket 34b, the arm plate 19b, and the left leg 21c, and nuts N2 are fastened to the left and right ends to hold these three members together. In this state, the mounting bracket 34b, the arm plate 19b, and the frame-like frame 21 are swingable about the axis J11. On the other hand, the mounting bracket 34b can be removed from the arm plate 19b by removing the nut N2 and pulling out the shaft J11.

  On the other hand, the upper bracket 35 can be attached to the connecting column 24 so as to be swingable about the connecting axis J7 and detachable.

  That is, the upper bracket 35 is formed in a bifurcated shape so as to straddle the connecting column 24 to the left and right, while the connecting shaft J7 penetrates the upper bracket 35 and the connecting column 24 to the left and right, and nuts N3 are provided at both left and right ends. Fastened to hold both of these together. In this state, the upper bracket 35 and the connection column 24 are swingable about the connection axis J7. On the other hand, the upper bracket 35 can be removed from the connecting column 24 by removing the nut N3 and pulling out the connecting shaft J7.

  Thus, since the holding part 16 and the snow remover 3 are connected by the upper bracket 35, the holding part 16 and the snow removal machine 3 are rotated around the axes J10 and J11 while maintaining the positional relationship between them. It swings with respect to the mounting brackets 34a and 34b.

  The output bracket J12 and the input shaft J8 of the motor 18 are arranged so as to be connectable by the mounting brackets 34a and 34b and the upper bracket 35 when the snow removal machine 3 is mounted on the holding portion 16.

  That is, the holding unit 16 can be attached with the motor 18 so that the input shaft J8 and the output shaft J12 of the snow remover 3 to be mounted are arranged on the same axis.

  The input shaft J8 and the output shaft J12 are connectable via a coupling 36 as shown in FIG.

  FIG. 5 is a perspective view showing a coupling that connects the output shaft of the motor and the input shaft of the snowplow.

  Referring to FIG. 5, the coupling 36 includes a meshing member 37 provided on each of the output shaft J12 and the input shaft J8, and an element 38 disposed between the meshing members 37.

  In this coupling 36, the claw portions 37a of the respective engaging members 37 are engaged with the recesses 37b on the other side, whereby the rotational driving force of the output shaft J12 is transmitted to the input shaft J8, and the claw portions 37a The element 38 interposed between the side surfaces of the recesses 37b functions as a cushioning material, thereby preventing breakage of each claw portion 37a.

  As described above, the input shaft J8 and the output shaft J12 are positioned on the same axis in the connected state of the holding unit 16 and the snow remover 3 by the axes J7, J10, and J11. By mounting the snow removal machine 3, both shafts J8 and J12 can be connected via the coupling 36.

  Further, in a state where the snow removal machine 3 is mounted on the holding unit 16, the snow removal machine 3 mounted on the front end portion of the arm 15 is swung by expanding and contracting the rod 14 a of the hydraulic cylinder 14. Can be moved up and down.

  At this time, a link 17 is provided between the holding portion 16 and the main frame 8 and a parallel link mechanism is formed between the arm 15 and the axes J7 and J10 of the snowplow 3 during the lifting operation. And tilting around J11 can be suppressed.

  In the embodiment, the snow remover 3 is exemplified as the work device, but other types of work devices such as a mower can be attached to the arm 15 (the arm plates 19a and 19b). In other words, regardless of the type of work device, the attachment position with each arm plate 19a, 19b and the positional relationship between this attachment position and the input shaft (input shaft J8 in the above embodiment) are preset. The output shaft J12 of the motor 18 can be attached to and detached from the input shaft even when another type of work device is mounted on the arm 15 without being limited to the snow remover 3 described above.

  As described above, according to the hydraulic excavator 1, the output shaft J12 of the motor 18 mounted on the holding unit 16 and the input shaft J8 of the snowplow 3 mounted on the arm 15 can be connected. A common motor 18 can be used for a plurality of types of work devices attached to and detached from the arm 15.

  Furthermore, in the hydraulic excavator 1, the snowplow 3 can be driven by the motor 18 held at the end (holding portion 16) of the arm 15, so that it is not necessary to arrange the motor 18 on the excavator body 2 itself. The excavator body 2 can be reduced in size.

  In the hydraulic excavator 1, the snow removal machine 3 is attached to the end of the arm 15 that holds the motor 18, whereby the input shaft J8 of the snow removal machine 3 and the output shaft J12 of the motor 18 can be directly connected. Therefore, not only can the cost be reduced compared to the case where a special configuration such as a driving force transmission shaft is required between the two shafts J8 and J12, but the snow remover 3 can be omitted to the extent that the shaft can be omitted. The space between the excavator body 2 can be used effectively.

  Therefore, according to the hydraulic excavator 1 described above, the cost can be reduced and the excavator main body 2 can be reduced in size while using a common motor 18 for a plurality of types of work devices to be attached and detached.

  In particular, the hydraulic excavator 1 to which the snow removal machine 3 is attached by the attachment member 4 as in the above embodiment, when removing snow on a narrow road, removes the attachment 7 from a position before entering the road. Since the snow on the road is drawn to the hydraulic excavator 1 side by the bucket and the snow can be removed by the snow remover 3 on the road without being invaded into the narrow road. Snow can be removed.

  Therefore, it is possible not only to avoid the unstable work of running the hydraulic excavator 1 in a narrow road, but also to at least lay down the attachment 7 even if the road width of the road is such that the hydraulic excavator 1 cannot enter. If the road width is possible, the snow on the road can be removed by the hydraulic excavator 1.

  Moreover, in the said embodiment, since the arm 15 is detachable with respect to the main frame 8, when not using the snow remover 3, the shovel main body 2 can be made into a compact form by removing the arm 15. FIG. .

  In the above embodiment, the arm 15 can be swung around the horizontal axes J2 and J3 by the expansion and contraction of the rod 14a of the hydraulic cylinder 14, so that the snow removal machine 3 can be lifted and lowered by the hydraulic cylinder 14.

  Furthermore, in the above embodiment, since the parallel link mechanism is formed by the arm 15 and the link 17, the snow remover 3 can be raised and lowered while maintaining the posture of the snow remover 3.

  Further, according to the embodiment in which the arm 15 is supported so as to be swingable around the horizontal axes J2 and J3 with respect to the mounting portion 10 to which the earthing blade (not shown) is attached, the earthing blade mounting portion 10 is provided. Since the arm 15 can also be used as an attachment, it is not necessary to make a special design change or the like on the excavator body 2 in order to attach the arm 15.

  In addition, although the said embodiment demonstrated each arm plate 19a, 19b and the structure which made the holding | maintenance part 16 separate, you may comprise these both integrally. That is, the motor 18 may be directly mounted on each arm plate 19a, 19b.

1 is a side view showing an overall configuration of a hydraulic excavator equipped with a snowplow according to the present invention. It is a plane partial sectional view which shows the structure of the lower traveling body, attachment member, and snowplow of the hydraulic excavator of FIG. It is the III-III sectional view taken on the line of FIG. It is a rear view which shows the holding | maintenance part of FIG. It is a perspective view which shows the structure of the coupling of FIG.

Explanation of symbols

1 Excavator (work machine)
2 Excavator body (running body)
3 Snowplow (working equipment)
4 Mounting member 10 Mounting portion 14 Hydraulic cylinder (drive portion)
15 Arm 16 Holding part 17 Link 18 Motor 36 Coupling J2 Horizontal axis J3 Horizontal axis J8 Input axis J12 Output axis

Claims (6)

A member for attaching a work device that drives a driving object by transmitting a rotational driving force of a motor to an input shaft, with a predetermined interval to a self-propelled traveling body,
An arm having one end connected to the traveling body and the other end detachable from the working device;
A holding portion provided at the other end of the arm;
A motor having an output shaft that is held by the holding portion and is detachable from the input shaft;
The holding portion positions and holds the motor so that the output shaft of the motor can be connected to the input shaft of the working device by attaching the other end of the arm to the working device. A mounting member for a working device.   The work device mounting member according to claim 1, wherein the arm is configured to be detachable from the traveling body.   The arm is supported so as to be swingable about a horizontal axis with respect to the traveling body, and further includes a drive unit that is provided between the traveling body and the arm and swings the arm with respect to the traveling body. The work device mounting member according to claim 1, wherein the work device mounting member is provided.   The link member provided between the said traveling body and the said working device is further provided so that the attitude | position of the said working device may be maintained at the time of the rocking | fluctuation operation | movement of the said arm. The attachment member of the working device as described in 2.   The mounting member according to any one of claims 1 to 4, a work device and a traveling body connected to each other at a predetermined interval by the mounting member, and a revolving body that is rotatably mounted on the traveling body. Working machine with.   The work machine according to claim 5, wherein the arm is supported so as to be swingable about a horizontal axis with respect to a mounting portion to which the earthing blade of the traveling body is attached.

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