JPH077334U - Mowing equipment used by attaching to the arm tip of a hydraulic excavator excavator - Google Patents

Abstract

(57) [Summary] [Purpose] In a mowing device that is attached to the arm tip of a hydraulic excavator excavator and used, enables a wide range of mowing work centered on the excavator and adjusts the position of the cutting blade device. Easy to operate. [Structure] The mowing device A has an attachment base 1 which is attached to the arm tip of the excavator so that the angle can be adjusted in the vertical direction.
The attachment base 1 includes a base cylinder 10 and a slider boom 15, and the slider boom 15 can slide in and out by a hydraulic cylinder S1. The cutting blade device 2 is attached to the tip of the slider boom 15. The cutting blade device 2 has a base frame 20, and the base frame 20 is attached by a hydraulic cylinder S2 so as to be swingable in the axial direction of the slider boom 15. The base frame 20 is provided with a rotary blade 29 whose angle can be adjusted in the vertical direction by a hydraulic cylinder S3. The rotary blade 29 is driven by the hydraulic motor M, and has a blade plate 295 axially attached to the peripheral edge thereof.
2, 293.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a mowing device that is used by being attached to the arm tip of a hydraulic excavator excavator such as a backhoe.

[0002]

[Prior art]

 For example, the mowing of dense weeds such as slopes of banks and riverbeds is generally done by hand-held mowers that have an engine-driven rotary blade at the end of the arm, or by self-propelled rotary blades. Is done using the grass mower.

[0003]

[Problems to be solved by the device]

 However, the above-described conventional mowing device has the following problems. (A) When using a hand-held mower, the mower is heavy and the amount of work required for mowing is often seasonal under the scorching sun. Work efficiency is also poor. (B) When using a self-propelled mower, work can be done efficiently on flat ground, but work on slopes with a large inclination angle, such as slopes of dikes, can cause falls, so Be restricted.

[0004]

[Means for Solving the Problems]

 Means of the present invention taken to solve the above problems are as follows. The first means is a mowing device that is used by being attached to the arm tip of a hydraulic excavator excavator. This mowing device is attached to the arm tip of a hydraulic excavator excavator so that the angle can be adjusted in the vertical direction. Which is capable of adjusting the expansion and contraction, and is attached to the distal end of the mounting base on the telescopic side so that the swinging can be adjusted in the longitudinal direction and in the axial circumferential direction of the mounting base, driven by a prime mover. This is a mowing device that is used by being attached to the arm tip of a hydraulic excavator excavator equipped with a mowing blade device.

A second means is a grass mower attached to the tip of the arm of the hydraulic excavator excavator according to the first means, in which a hydraulic motor is used as a prime mover for driving the cutting blade device. .

[0006]

[Action]

 Since the attachment base can be adjusted for expansion and contraction, move the cutting blade device attached to the distal end of the expansion and contraction side along the ground without moving the boom or arm of the hydraulic excavator excavator or the excavator body. The operation is relatively easy. In addition, by extending the attachment base and setting the length to the tip of the cutting blade device long, it is possible to mow grass far from the excavator, and operate the boom and arm in a wide range without moving the excavator body. You can mow.

The attachment base and the cutting blade device can be adjusted to swing vertically with the attachment portion as an axis. Therefore, when working on an inclined surface such as a slope of a dike, the cutting blade device can be easily placed along the inclined surface regardless of whether the excavator body is looking up at the slope or looking down.

When a hydraulic motor is used as a prime mover for driving the cutting blade device, noise is smaller than when an engine is used. When the cutting blade is a rotary blade, the rotation of the motor shaft can be reversed to reverse the rotation of the rotary blade, and unlike the engine, no gear device is required and the structure can be simplified. Further, the performance of the hydraulic motor does not deteriorate regardless of the posture of the cutting blade device, and the cutting blade device can be driven stably.

[0009]

【Example】

 The present invention will be described in more detail based on the embodiments shown in the drawings. FIG. 1 is a side view showing an embodiment of the mowing device according to the present invention attached to the arm tip of a backhoe, FIG. 2 is a perspective view of the mowing blade device, and FIG. 3 is a perspective view of the mowing device from below. FIG. Reference numeral A is a mowing device, which is an attachment base 1 attached to the tip of an arm 30 of a backhoe which is a hydraulic excavator excavator, and a cutting blade device 2 attached to the extension-side end of the attachment base 1. Is equipped with.

The attachment base 1 includes a base cylinder 10 having a rectangular tube shape. Attachment pieces 11 and 12 are provided at two intermediate portions of the base cylinder 10 at intervals. The tip of the arm 30 is pivotally attached to the rear attachment piece 11 by a pin P1. A little above the pin P1, one end of the link 13 is pivotally attached by the pin P2, and one end of the link 14 is pivotally attached by the pin P4 to the front attachment piece 12. The other ends of the links 13 and 14 are pivotally attached by a pin P3, and the rod head of the hydraulic cylinder S4 of the arm 30 is attached to the pin P3.

A slider boom 15 having substantially the same length as that of the base cylinder 10 is mounted on the base cylinder 10 so that it can slide in and out. A bracket 16 is attached to the tip of the slider boom 15 for attaching the cutting blade device 2 described later. Further, a hydraulic cylinder S1 having substantially the same length as the base cylinder 10 is attached to the upper surface of the base cylinder 10. The rod head of the hydraulic cylinder S1 is attached to the bracket 16.

Bearings 17 are provided at two positions below the bracket 16, and a base frame 20 of the cutting blade device 2 is swingably attached to the bearings 17 via a shaft pin 18. An angle 21 is provided in the upper middle portion of the base frame 20. An angle 160 is provided on a side portion of the bearing 17, and a hydraulic cylinder S2 is attached between the angle 21 and the angle 160 by pivotally supporting a cylinder base and a rod head with a pin. Accordingly, by operating the hydraulic cylinder S2, the base frame 20 can be swung about the shaft pin 18 as a shaft.

A hydraulic motor M is attached to the lower middle portion of the base frame 20. Further, a support angle 22 is provided in the middle part of the base frame 20. A base portion of a base rod 23 is attached to the support angle 22 via a connecting member 230 so as to be vertically and horizontally swingable. A tip portion of the rotary shaft 24 of the hydraulic motor M is pivotally supported at an intermediate portion of the base rod 23 via a bearing 231, and a sprocket 240 is attached to a tip portion thereof. In front of the sprocket 240, a sprocket 241 as a drive shaft of a gear device 27 for driving a rotary blade described later is provided. A drive chain C is hung on the sprockets 240 and 241. In addition, 25 is a chain case.

A support post 201 is provided on one end side of the lower portion of the base frame 20, and a shock absorber 26 is provided on the support post 201. The shock absorber 26 has a spring and a link mechanism, and has a structure that allows the lateral movement of the base rod 23 transmitted by the rod 260 to escape. In this embodiment, a universal joint (not shown) is provided on the rotary shaft 24 of the hydraulic motor M so that the base rod 23 can be swung in the vertical and horizontal directions. The hydraulic motor M can be directly fixed to the base rod 23 so that a universal joint or the like need not be provided on the rotary shaft 24.

A gear device 27 is attached to the tip of the base rod 23 via a shaft pin 270 so as to be vertically swingable. A hydraulic cylinder S3 is provided above the table rod 23. A support rod 232 is provided at the base of the hydraulic cylinder S3, and the support rod 232 is loosely attached to an angle 233 provided upright on the base rod 23 so as to be slidable back and forth. As a result, the escape of the hydraulic cylinder S3 is ensured so as to be able to cope with a case where a rotary blade 29 described later receives a vertical impact. 234 is a stopper rod that prevents the hydraulic cylinder S3 from rotating in the axial direction.

An angle 271 is provided on the top of the gear device 27, and a rod head of a hydraulic cylinder S3 is axially attached to the tip of the angle 271. Further, one end of a tension spring 272 for supporting the weight of a rotary blade 29 described later is attached to a side portion of the gear device 27, and the other end is attached to an upper portion of the base frame 20. At the lower part of the gear device 27, there is provided a protective curved plate 28 which is curved upward to protect the shaft supporting portion of the gear device 27 from stones and unevenness on the work surface. Reference numeral 280 is a reinforcing rib.

A rotary blade unit 29 is connected to the gear device 27. The rotary blade unit 29 has a drive transmission plate 290 in which a transmission mechanism section including a chain and a gear is incorporated. The drive transmission plate 290 has rotary shafts 291 (the rotary shaft of the tip portion is not visible in the figure) at two locations, and the rotary shafts 291 rotate in opposite directions. Rotating disks 292 and 293 are fixed to the rotating shaft 291. A cylindrical rotation stabilizer 294 for stabilizing the rotation is provided on the upper surface of the rotating disk 293 at the front portion. Further, on the lower surface of the peripheral edge of the rotating discs 292, 293, blade plates 295 are pivotally mounted by pins 296 at two positions facing each other on the diameter line so that the rotating discs 292, 293 rotate. Then, the blade plate 295 is projected from the peripheral edge by centrifugal force. A protective disc 297 having the same diameter as that of the rotating discs 292, 293 is fixed below the rotating discs 292, 293 on the upper surface of the drive transmission plate 290.

The method of use and the operation of this embodiment will be described with reference to FIGS. 1 to 3. In this embodiment, in order to obtain the driving force of each part of the mowing device A, one of the two hydraulic motors for running the backhoe is used, and the mowing device A is controlled independently of the backhoe. I am able to do it. The backhoe is designed to run with the remaining hydraulic motor. When mowing flat ground, as shown in FIG. 1, the cutting blade device 2 of the mowing device A is actuated to run the backhoe body (not shown) while keeping the rotary blade unit 29 horizontally slightly above the ground. .

When the backhoe main body is placed on a level ground and mowing the down slope or the up slope, the hydraulic cylinders S3 and S4 are operated together with the boom 31 and the arm 30 to attach the rotary blade unit 29 to the attachment part. The work is performed by adjusting the rotation of the shaft so that the rotary blade unit 29 is arranged along the slope with a space. The slider base 15 can be expanded and contracted by the hydraulic cylinder S1 of the attachment base 1, so that the cutting blade device 2 attached to the tip of the slider boom 15 moves the boom 31, arm 30 or backhoe body of the backhoe. It can be moved along the ground, without any effort, and is relatively easy to operate. In addition, if the slider boom 15 of the attachment base 1 is extended and the length to the tip of the cutting blade device 2 is set to be long, it is possible to mow grass far away from the backhoe, and the boom 31 and arms can be moved without moving the backhoe body. A wide range of mowing operations can be performed by operating 30.

Further, since the hydraulic motor M is used as a prime mover for driving the cutting blade device 2, noise is reduced as compared with the case where an engine is used. In FIG. 2, when the cutting direction of the cutting blade device 2 is the direction shown in the figure, the direction of rotation of the blade plate 295 is as shown by the arrow, which allows the grass to be held between the rotating disks 292, 293. Is cut off. If the direction of grass cutting is reversed, the rotation axis of the hydraulic motor can be reversed to cut grass while hugging the grass. Further, unlike the engine, the hydraulic motor M does not deteriorate in performance regardless of the posture of the cutting blade device 2 and can stably drive the cutting blade device 2. The present invention is not limited to the illustrated embodiment, and various modifications can be made within the scope of the claims for utility model registration, for example, the cutting blade device 2 is of a hair clipper type.

[0021]

[Effect of device]

 The present invention has the above configuration and has the following effects. (A) Since the attachment base can be adjusted for expansion and contraction, the cutting blade device attached to the end of the expansion and contraction side can be moved along the ground without moving the boom or arm of the hydraulic excavator excavator or the excavator body. It can be moved and the operation is relatively easy. (B) By extending the attachment base and setting the length to the tip of the cutting blade device to be long, it is possible to mow grass far away from the excavator, and operate a boom or arm without moving the excavator body to cover a wide range. Weeding work can be done.

(C) The attachment base and the cutting blade device can be adjusted to swing vertically with the attachment portion as an axis. Therefore, when working on an inclined surface such as a dike slope, the cutting blade device can be easily placed along the inclined surface regardless of whether the excavator body is looking up to the slope or looking down. . (D) When a hydraulic motor is used as a prime mover for driving the cutting blade device, noise is smaller than when an engine is used. Further, when the cutting blade device is a rotary blade, the rotation of the motor shaft may be reversed to reverse the rotation of the rotary blade, and a gear device is not required like an engine, and the structure can be simplified. Furthermore, the performance of the hydraulic motor does not deteriorate in any posture of the cutting blade device, and the cutting blade device can be stably driven.

[Brief description of drawings]

FIG. 1 is a side view showing a state in which an embodiment of a mowing apparatus according to the present invention is attached to an arm tip of a backhoe.

FIG. 2 is a perspective view of a cutting blade device.

FIG. 3 is a perspective view of a main part of the cutting blade device as viewed obliquely from below.

[Explanation of symbols]

 A Mowing device 1 Attachment base 10 Base cylinder 15 Slider boom 2 Cutting blade device 23 Rods 29 Rotating blade unit 292, 293 Rotating disc 295 Blade plate M Hydraulic motor

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[Procedure amendment]

[Submission date] August 18, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 3]

Claims (2)

[Scope of utility model registration request] 1. A mowing device for use by being attached to an arm tip of a hydraulic excavator excavator, which can be attached to an arm tip of a hydraulic excavator excavator so that an angle can be adjusted in a vertical direction. And an attachment base that is adjustable in expansion and contraction, and a cutting machine driven by a prime mover, which is attached to the extension-side end of the attachment base so as to be adjustable in swing in the longitudinal direction and in the axial circumferential direction of the attachment base. A mowing device that is attached to the tip of the arm of a hydraulic excavator excavator and has a blade device. 2. The mowing device to be used by being attached to the arm tip of the hydraulic excavator excavator according to claim 1, wherein a hydraulic motor is used as a prime mover for driving the cutting blade device.