JP2021179109A - Attachable/detachable mechanism and work machine provided therewith - Google Patents

Abstract

To provide an attachable/detachable mechanism that simplifies and lightens a structure related to attachable/detachment, and a work machine having the attachable/detachable mechanism.SOLUTION: The present invention comprises a main body (a) equipped with a mounting portion 60 at the tip, and an attachable/detachment mechanism 6 for attaching and detaching a working portion 51, which has an engagement portion 65 connecting to the mounting portion 60, to/from the main body a. In the attachable/detachment mechanism 6, the mounting portion 60 comprises a recessed groove open in a semicircular shape on the side of the mounting portion 60, a boss portion 603 arranged parallel to the central axis line of the recessed groove and into which a connecting shaft 62 connecting to the working portion 51 is inserted, and a peak-shaped portion 604 arranged in the vicinity of the recessed groove and the boss portion 603, having a ridge 605 in the direction intersecting the central axis of the recessed groove and the central axis of the boss portion 603, and arranged between the recessed groove and the boss portion 603. The engagement portion 65 has an engagement pin 651, a hole portion that can fix the engagement portion 65 and the mounting portion 60, and a contacting surface 653 that the ridge 605 of the peak-shaped portion 604 can come into contact with.SELECTED DRAWING: Figure 1

Description

The present invention relates to a work machine provided with a detachable mechanism and a detachable mechanism.

In a work machine, etc., if a work part is attached to the tip of the telescopic arm member so that the worker and the worker can work at a place away from the boarding machine, multiple work parts are prepared according to the work form. Then, work efficiency is good if only each work part is replaced for work.
As the attachment / detachment mechanism of the working portion, those described in Patent Document 1 and Patent Document 2 are known. In these conventional examples, the main body including the arm member remains the same, and only the working portion needs to be replaced, so that the work can be performed efficiently.

The attachment / detachment mechanism described in Patent Document 1 grips the second coupling pin between the gripping claw that is rotationally driven by the hydraulic cylinder and the second recess, and holds the first coupling pin in the first recess. It is a mechanism to attach / detach by engaging with.
In the detachable structure described in Patent Document 2, the mounting member held at the tip of the arm member includes a flat plate portion, and the bracket on the back surface of the bucket, which is a working portion, includes a substrate along the flat surface of the flat plate portion.

Japanese Unexamined Patent Publication No. 2005-171696 Japanese Unexamined Patent Publication No. 2000-104276

It is usually difficult to identify and attach an agricultural tractor to an agricultural work machine to be attached to an agricultural tractor. The specifications of weight and body dimensions of agricultural tractors vary widely depending on the manufacturer and specifications. Therefore, an agricultural work machine equipped with an agricultural tractor needs to be able to work safely even if the ground contact load of the tractor, which is the weight distribution with the tractor to be installed, is poorly combined. Therefore, it is required to reduce the total weight of the agricultural work machine.

In the case of an agricultural work machine that works in a place far away from the agricultural tractor, if the work part located at the tip of the telescopic arm is lighter, the tip of the telescopic arm should be located far away. However, the grounding load of the tractor equipped with this agricultural work machine is properly maintained, and work can be performed safely.
When the mechanism of Patent Document 1 is adopted for this type of agricultural work machine, a hydraulic cylinder and a member driven by the hydraulic cylinder are required at the tip of the arm portion, and the weight of the tip of the arm member as well as the total weight of the agricultural work machine increases. As a result, there is a problem that the ground contact load of the tractor deteriorates.

The attachment / detachment structure described in Patent Document 2 has a simple structure, but has a problem that the attachment / detachment cannot be smoothly performed if a foreign substance is caught in the flat surface portion which is the contact surface. Therefore, it is necessary to keep the flat surface clean, which is a burden on the operator. Further, although the mounting stability is improved when the area of the flat surface portion is wide, it may be difficult to provide the flat surface portion widely depending on the shape of the work portion to be attached and detached.

The present invention has been made with the above-mentioned problems in mind, and an object of the present invention is to provide a work machine having a detachable mechanism and a detachable mechanism capable of simplifying the structure related to attachment / detachment and reducing the weight.

This invention
A attachment / detachment mechanism for attaching / detaching a main body portion having a mounting portion at the tip portion and a working portion having an engaging portion connected to the mounting portion to / from the main body portion.
The mounting portion includes a recessed groove opened in a semicircular shape on the side of the mounting portion.
A boss portion that is arranged parallel to the central axis of the depressed groove and inserts a connecting shaft that connects to the working portion.
A ridge-shaped portion arranged in the vicinity of the depressed groove and the boss portion, having a ridgeline in a direction intersecting the central axis of the depressed groove and the central axis of the boss portion, and arranged over the depressed groove and the boss portion. , Equipped with
The engaging portion includes an engaging pin that can be engaged with the recessed groove.
A hole portion in which the connecting shaft can be inserted together with the boss portion to fix the engaging portion and the mounting portion.
With the contact surface on which the ridgeline of the peak-shaped portion can come into contact,
Detachable mechanism, which is characterized by being equipped with
Related to.

The present invention further
The engaging portion includes a connection plate for attaching the engaging pin and the boss portion, and the engaging portion.
The connection plate has an opening having an inclined portion for inserting the engaging portion, and the connection plate.
A detachable mechanism, which is characterized by being further equipped with
Related to.

The present invention further
The mounting portion includes a rotating portion that can rotate with respect to the main body portion and a rotating portion.
A detachable mechanism, which is characterized by being further equipped with
Related to.

The present invention further
The attachment / detachment mechanism, characterized in that the mounting portion has a sharp ridgeline in the direction of the engaging portion, and the end face is provided with a peak-shaped portion having a triangular mountain shape connected to the ridgeline.
Related to.

This invention
A attachment / detachment mechanism for attaching / detaching a main body portion having a mounting portion at the tip portion and a working portion having an engaging portion connected to the mounting portion to / from the main body portion.
The mounting portion includes a recessed groove opened in a semicircular shape on the side of the mounting portion.
A boss portion that is arranged parallel to the central axis of the depressed groove and inserts a connecting shaft that connects to the working portion.
A ridge-shaped portion arranged in the vicinity of the depressed groove and the boss portion, having a ridgeline in a direction intersecting the central axis of the depressed groove and the central axis of the boss portion, and arranged over the depressed groove and the boss portion. , Equipped with
The engaging portion includes an engaging pin that can be engaged with the recessed groove.
A hole portion in which the connecting shaft can be inserted together with the boss portion to fix the engaging portion and the mounting portion.
A detachable mechanism having a contact surface on which the ridgeline of the peak-shaped portion can come into contact is provided.
The main body has a mounting part that can be mounted on the traveling machine and a mounting part.
The work part is a work part that can work on the ground and
A work machine characterized by being equipped with
Related to.

The present invention further
The engaging portion includes a connection plate for attaching the engaging pin and the boss portion, and the engaging portion.
The connection plate has an opening having an inclined portion for inserting the engaging portion, and the connection plate.
A work machine, which is characterized by being further equipped with
Related to.

The present invention further
The mounting portion includes a rotating portion that can rotate with respect to the main body portion and a rotating portion.
A work machine, which is characterized by being further equipped with
Related to.

The present invention further
The main frame to which the mounting portion is fixed and
An expansion / contraction means for connecting the main frame and the attachment / detachment mechanism,
A work machine, which is characterized by being further equipped with
Related to.

The present invention further
The attachment / detachment mechanism, characterized in that the mounting portion has a sharp ridgeline in the direction of the engaging portion, and the end face is provided with a peak-shaped portion having a triangular mountain shape connected to the ridgeline.
Related to.

The present invention provides a attachment / detachment mechanism and a working machine having the attachment / detachment mechanism that can simplify the structure related to attachment / detachment and reduce the weight.

It is a top view of the working part of the attachment / detachment mechanism which concerns on embodiment of this invention. It is an enlarged view of a part of the left side surface of the working part of the attachment / detachment mechanism which concerns on embodiment of this invention. It is a front partial enlarged view of the working part of the attachment / detachment mechanism which concerns on embodiment of this invention. It is an enlarged end view of a part of the left side surface of the working part of the attachment / detachment mechanism which concerns on embodiment of this invention. It is an enlarged end view of a part of the right side surface of the working part of the attachment / detachment mechanism which concerns on embodiment of this invention. It is a partially enlarged front view of the attachment part of the attachment / detachment mechanism which concerns on embodiment of this invention, and is the figure which shows the attachment / detachment procedure of the attachment part. It is a partially enlarged front view of the attachment part of the attachment / detachment mechanism which concerns on embodiment of this invention, and is the figure which shows the attachment / detachment procedure of the attachment part. It is a partially enlarged front view of the attachment part of the attachment / detachment mechanism which concerns on embodiment of this invention, and is the figure which shows the attachment / detachment procedure of the attachment part. It is a partially enlarged front view of the attachment part of the attachment / detachment mechanism which concerns on embodiment of this invention, and is the figure which shows the attachment / detachment procedure of the attachment part. It is a working part unfolding state diagram seen from the rear in the traveling direction at the time of the working part unfolding state of the working machine which concerns on the attachment / detachment mechanism of the embodiment of this invention. It is a plan view of the working part deployed state and the working part normal state of the working machine according to the attachment / detachment mechanism of the embodiment of the present invention, and the upper part in the drawing is the traveling direction.

In FIGS. 10 and 11, A is a working machine. In the embodiment of the present invention, the working machine A relates to a working machine that performs work such as mowing. The work machine A is mounted and driven on the mounting mounting portions 111 and 112 of the traveling machine body B made of a tractor or the like.
In the embodiment, the traveling machine B made of a tractor or the like is located behind the working machine A illustrated in FIG.

11 shown in FIGS. 10 and 11 is a main frame. The main frame 11 is attached to the working machine A. As shown in the figure, the main frame 11 is provided with mounting portions 111 and 112 for mounting on the traveling machine body B. The two 111s are the mounting portions (lowers) provided at the lower part, and the 112s are the mounting portions (top) provided at the upper part, and the working machine A is mounted on the traveling machine body B at three points.

The operation unit (not shown) is provided on the traveling machine body B and operates the directional control valve 25 described later.
22 shown in FIGS. 10 and 11 is an input axis. The input shaft 22 takes in the driving force from the traveling machine B to be attached to the working machine A.
23 shown in FIGS. 10 and 11 is a transmission unit. The speed change unit 23 shifts the driving force input from the traveling machine body B by the input shaft 22.

24 shown in FIGS. 10 and 11 is a hydraulic pump that is a fluid pressure generation source. The hydraulic pump 24 is input from the traveling machine body B by the input shaft 22, and is driven by the driving force changed by the transmission 23. The hydraulic pump 24 delivers the flood pressure to the hydraulic equipment related to the hydraulic equipment of the work machine A.
25 shown in FIGS. 10 and 11 is a valve unit which is a directional control valve. The valve unit 25 switches and controls the flow of hydraulic pressure.

21 shown in FIGS. 10 and 11 is a mast frame. Reference numeral 211 is a mast frame rotation shaft. The mast frame 21 is rotatably attached to the main frame 11 by the mast frame rotation shaft 211.
The mast frame 21 is provided at one end or the center of the working machine A with respect to the left and right in the traveling direction of the main frame 11. The mast frame 21 can rotate the telescopic means 41 in the horizontal direction. The mast frame 21 can rotate the expansion / contraction means 41 around the mast frame rotation shaft 211, which is around the vertical axis. In this embodiment, the mast frame 21 that rotates with one end side as a fulcrum is located in the normal position and the normal state, and rearward from the normal position when the other end side of the mast frame 21 is positioned in the direction orthogonal to the traveling direction. When the other end side of the mast frame 21 is rotated, it is in the retracted position and the retracted state.

Reference numeral 212 is a horizontal rotation cylinder (cylinder for mast frame rotation shaft). The mast frame rotation shaft cylinder 212, which is a horizontal rotation cylinder, is composed of a hydraulic cylinder and expands and contracts by flood control.
One end of the horizontal rotating cylinder 212 is attached to the main frame 11, and the other end is attached to the mast frame 21. Therefore, the horizontal rotation cylinder 212 expands and contracts the horizontal rotation cylinder 212 by the movement of the stroke, and rotationally drives the mast frame 21 with respect to the main frame 11.

31 is a tank. The tank 31 is an oil tank in the embodiment. In this embodiment, the tank 31 is provided at the other end of the main frame 11 with respect to the left and right in the traveling direction of the working machine A. Since each cylinder used in the work machine A is a hydraulic cylinder, the tank 31 stores oil for driving each oil cylinder.
The front end portion of the tank 31 is located substantially the same as the front end portion of the main frame 11 or slightly rearward of the front end portion of the main frame 11.

41 is a telescopic means. The telescopic means 41 connects one end side to a mast frame 21 that can rotate near the main frame 11. The telescopic means 41 is in a stored state in which the telescopic means 41 is folded into the working portion 51 and the working portion 51 is positioned on the main frame 11, and the telescopic means 41 is extended as shown in FIGS. 10 to 11. The working state of the working unit 51 located on the side of the main frame 11 with respect to the traveling direction is taken. That is, the telescopic means 41 can be changed between a stored state folded in the vicinity of the main frame 11 and an extended state extended laterally of the main frame 11. Further, in the description, the expanded state may be referred to as an expanded state.
The expansion / contraction means 41 has a first boom 411, a first connecting body 412, a second boom 413, a second connecting body 414, a first cylinder 415, a second cylinder 416, a third cylinder 417, and a fourth cylinder 418.

One end of the first boom 411 is connected to the mast frame 21 and is provided so as to be rotatable in the vertical direction.
The first connecting body 412 is provided so that one end thereof is connected to the tip end portion on the other end side of the first boom 411 so as to be rotatable in the vertical direction.
The second boom 413 has one end connected to the tip end portion on the other end side of the first connecting body 412, and the mast frame 21 is provided so as to be rotatable in the front-rear direction with respect to the traveling direction at a normal position.
The second connecting body 414 is provided with one end at the tip end portion on the other end side of the second boom 413, and the mast frame 21 can move in parallel to the first connecting body 412 in the normal position in the front-rear direction.

The first cylinder 415 is composed of a hydraulic cylinder, and connects the mast frame 21 and the first boom 411 via a link mechanism 42 connecting the mast frame 21 and the first boom 411. The first cylinder 415 is for rotating the first boom 411, and is provided on the first boom 411 to expand and contract and at the same time rotate together with the first boom 411 to rotate the first boom 411 up and down.
The first cylinder 415 rotates and drives the expansion / contraction means 41 around the first boom rotation shaft 411A, which is a horizontal axis provided on the mast frame 21.
The first boom 411 is rotatably connected to the mast frame 21 in the vertical direction with the first boom rotation shaft 411A as the center of rotation.

The second cylinder 416 is composed of a hydraulic cylinder, and connects the first boom 411 and the other end side of the first connecting body 412. The second cylinder 416 is for vertical rotation of the first connecting body 412.
The third cylinder 417 is a front-rear rotating cylinder, which is a hydraulic cylinder, and connects the first connecting body 412 and the second boom 413. The third cylinder 417 is for rotating the second boom 413 back and forth with respect to the first boom 411. In the third cylinder (front-rear rotation cylinder) 417, the mast frame 21 rotates and drives the expansion / contraction means 41 in the front-rear direction at the normal position due to the expansion / contraction of the stroke.

The fourth cylinder 418 is composed of a hydraulic cylinder and connects the second connecting body 414 and the working portion 51. The fourth cylinder 418 is for vertical rotation of the working portion 51.

51 is a working unit. The working unit 51 can work on the ground. The working portion 51 is provided at the tip end portion on the other end side of the second connecting body 414 and on the front side with respect to the traveling direction of the second connecting body 414. The working portion 51 is further provided so as to be rotatable in the vertical direction with respect to the second connecting body 414.
In this embodiment, the working unit 51 arranges a plurality of blades on the rotation axis 512 oriented in the direction orthogonal to the traveling direction in the normal position of the mast frame 21, and drives the plurality of blades to rotate to mow the grass. And so on. However, the work purpose and the structure of the work unit 51 are not limited to the disclosed examples.

The working unit 51 is folded with the unfolded postures shown in FIGS. 10 and 11 and the first boom 411 and the second boom 413 in a substantially horizontal state, respectively, and the first boom 411, the first connecting body 412, and the first boom 413 are folded. The 2 boom 413 and the second connecting body 414 can take a retracted posture located above the tank 31.

The attachment / detachment mechanism 6 and the attachment portion 60 will be described.
Reference numeral a illustrated in FIGS. 10 and 11 is a main body portion. The main body portion a includes a detachable mechanism 6 and a working portion 51. A detachable mechanism 6 is provided at the tip of the main body a. The attachment / detachment mechanism 6 is provided with a mounting portion 60. The mounting portion 60 can be mounted on the traveling machine body B via the main body portion a. The attachment / detachment mechanism 6 attaches / detaches the working portion 51 from the main body portion a by the attachment portion 60.

41 shown in FIGS. 10 and 11 is an expansion / contraction means. The expansion / contraction means 41 connects the main frame 11 and the attachment / detachment mechanism 6. The mounting portion 60 is fixed to the main frame 11.
The mounting portion 60 has a depressed groove 601, a boss portion 603, a ridge line 605, and a peak-shaped portion 604.

As shown in FIGS. 2 to 10, the mounting portion 60 has two plate-shaped bodies having a trapezoidal shape as a whole in front view, which are laminated at intervals. As shown in FIGS. 2, 4, and 5, the end surface of the mounting portion 60 has both plate-like bodies joined to each other on the contact surface 653 side of the engaging portion 65, which is the lower end portion in the drawing, and the tip is lowered in the drawing. It is formed of a pentagon having a ridge line 605 projecting from the lower end of the mounting portion 60 in a V shape.

The distance between the two plate-shaped bodies of the mounting portion 60 is narrowed, and the inclined surface reaches the ridge line 605 as shown in FIGS. Is provided to form a peak-shaped portion 604. As shown in FIGS. 4 and 5, the peak-shaped portion 604 has a triangular mountain shape connected to a ridge line 605 at which the tip of the lower end protrudes, in the shape of the end faces of the front and back surfaces. The peak-shaped portion 604 end face has an end face shape similar to that of an ax, so to speak.
The triangular angle consists of 60 to 120 degrees. It preferably consists of 90 degrees. Since the mounting portion 60 is composed of these corners, the mounting portion 60 is excellent in strength, and even if there is a foreign substance on the contact surface 653 of the engaging portion 65 when the main body portion a and the working portion 51 are connected, it can be avoided by separating them.
The peak-shaped portion 604 is arranged so as to extend over the depressed groove 601 and the boss portion 603.

Reference numeral 606 is a rotating portion. The rotating portion 606 has a shaft shape and is provided on the mounting portion 60 toward the second connecting body 414 at the tip of the telescopic means 41 as shown in FIGS. 1 to 11. The rotating portion 606 is rotatably provided with respect to the main body portion a.
As shown in FIGS. 6 to 9, the recessed groove 601 is opened in a semicircular shape on the front and back surfaces of the mounting portion 60 on the side of the lower mounting portion 60 of the rotating portion 606 provided in the mounting portion 60. do.
The boss portion 603 is provided over the front and back surfaces of the mounting portion 60 in the shape of a through hole in parallel with the central axis of the recessed groove 601.

62 is a connecting shaft.
The connecting shaft 62 is inserted into the boss portion 603. By inserting the connecting shaft 62 into the boss portion 603, the connecting shaft 62 is connected to the boss portion 603 and the working portion 51.
The ridge line 605 is arranged in the vicinity of the depressed groove 601 and the boss portion 603, and has a direction intersecting the central axis of the depressed groove 601 and the central axis of the boss portion 603.

Reference numeral 65 is an engaging portion. The engaging portion 65 includes an engaging pin 651 that can be engaged with the recessed groove 601 and a hole portion 652 that can fix the engaging portion 65 and the mounting portion 60 by inserting the connecting shaft 62 together with the boss portion 603. The ridge line 605 of the peak-shaped portion 604 is provided with a contact surface 653 to which the ridge line 605 can abut.

The engaging portion 65 includes a connecting plate 654 to which the engaging pin 651 and the boss portion 603 are attached, and the connecting plate 654 has an opening 655 having an inclined portion 656 for inserting the engaging portion 65.
The attachment / detachment mechanism 6 attaches / detaches the working portion 51 from the main body portion a having the engaging portion 65 connected to the mounting portion 60.

The attachment / detachment procedure (attachment procedure) of the attachment portion 60 according to the embodiment of the present invention will be described.
(1) As shown in FIG. 6, the mounting portion 60 is lowered toward the engaging portion 65 with the opening of the recessed groove 601 facing downward.
(2) As shown in FIG. 7, the engaging pin 651 of the engaging portion 65 is fitted into the recessed groove 601.
(3) As shown in FIG. 8, the mounting portion 60 is swiveled (rotated) with the recessed groove 601 and the engaging pin 651 as fulcrums.
(4) As shown in FIG. 9, the peak-shaped portion 604 swivels, and the peak-shaped portion 604 comes into contact with the contact surface.
(5) As shown in FIG. 9, since the hole portion 652 and the boss portion 603 coincide with each other, the connecting shaft 62 is passed through the hole portion 652 and the boss portion 603. The connecting shaft 62 is prevented from coming off, and the fixing work between the mounting portion 60 and the engaging portion 65 is completed.
The removal procedure is the reverse of the mounting procedure.

The operation and effect of the examples of the present invention will be described.
The fixing of the main body portion a and the working portion 51 is completed by penetrating the connecting shaft 62 through the recessed groove 601 and the engaging pin 651, the boss portion 603 and the hole portion 652.

Since the peak-shaped portion 604 comes into contact with the contact surface 653, the boss portion 603 and the hole portion 652 inevitably coincide with each other, and the connecting shaft 62 can be easily inserted into the hole portion 652.

As shown in FIG. 9, the peak-shaped portion 604 is in contact with the main body portion a and the working portion at a distance from the hole portion 652 to the engaging pin 651 even when the main body portion a and the working portion 51 are connected and fixed. The contact area of the 51 is increased, and the sense of stability and unity between the main body portion a and the working portion 51 at the time of fixing is improved.

Further, when the main body portion a and the working portion 51 are connected and fixed, the side portion of the mounting portion 60 comes into contact with the connection plate 654 provided in the engaging portion 65 in as wide an area as possible. The sense of stability (sense of unity) is further improved.

In the case of fixing, the operator only needs to insert the connecting shaft 62 into the boss portion 603 and the hole portion 652 that inevitably match, so that there is no need to perform adjustment work such as aligning the holes during the connecting work. Therefore, efficient attachment / detachment work is possible.

Since the end face shape of the front and back surfaces of the peak-shaped portion 604 shown in FIGS. 2, 4 and 5 has a triangular mountain shape in which the tip of the lower end protrudes, the main body portion a and the working portion 51 are connected by the peak-shaped portion 604. Occasionally, even if there is a foreign substance on the contact surface 653 of the engaging portion 65, it can be avoided by squeezing it. Therefore, the contact portion between the peak-shaped portion 604 and the contact surface 653 can be kept clean. The peak tip of the peak-shaped portion 604 may have a small contact surface that can be ignored with respect to the contact surface 653, or a flat surface or an arc portion formed by processing.

The inclined surface of the peak-shaped portion 604 can serve as a guide when the mounting portion 60 is inserted downward from the upper portion of the engaging portion 65. Therefore, even if the position or orientation of the mounting portion 60 and the engaging portion 65 or each other is deviated, the mounting portion 60 and the engaging portion 65 can be engaged while correcting the misalignment so as to follow along the inclined surface.

By providing the inclined portion 656 in the opening of the connecting plate 654, the same effect as the inclined surface of the peak-shaped portion 604 can be obtained. In the embodiment, the inclined portion 656 is provided on the connecting plate 654 on the front side in the traveling direction, but the inclined portion 656 may also be provided on the connecting plate 654 on the rear side.

Since the end face shape of the peak-shaped portion 604 is a triangular mountain shape in which the tip of the lower end in FIGS. 4 and 5 on the contact surface 653 side protrudes, the engaging portion 65 is connected when the main body portion a and the working portion 51 are connected. Even if there is a foreign substance on the contact surface 653, it can be avoided by squeezing it. Therefore, the contact portion between the peak-shaped portion 604 and the contact surface 653 can be kept clean.
With the rotating portion, the recessed groove 601 and the boss portion 603 can be easily aligned with the engaging pin 651 and the hole portion 652, and the attachment / detachment work becomes efficient.

Appendix 1
A attachment / detachment mechanism for attaching / detaching a main body portion having a mounting portion at the tip portion and a working portion having an engaging portion connected to the mounting portion to / from the main body portion.
The mounting portion has a sharp ridgeline in the direction of the engaging portion, and the end face has a peak-shaped portion having a triangular mountain shape connected to the ridgeline.
The engaging portion is a contact surface on which the ridgeline of the peak-shaped portion can come into contact.
A detachable mechanism characterized by being equipped with.

Appendix 2
The mounting portion includes a recessed groove opened in a semicircular shape on the side of the mounting portion.
A boss portion that is arranged parallel to the central axis of the depressed groove and inserts a connecting shaft that connects to the working portion.
A ridge-shaped portion arranged in the vicinity of the depressed groove and the boss portion, having a ridgeline in a direction intersecting the central axis of the depressed groove and the central axis of the boss portion, and arranged over the depressed groove and the boss portion. , Equipped with
The engaging portion includes an engaging pin that can be engaged with the recessed groove.
A hole portion in which the connecting shaft can be inserted together with the boss portion to fix the engaging portion and the mounting portion.
The attachment / detachment mechanism according to claim 1, wherein the attachment / detachment mechanism is provided.

Appendix 3
The engaging portion includes a connection plate for attaching the engaging pin and the boss portion, and the engaging portion.
The connection plate has an opening having an inclined portion for inserting the engaging portion, and the connection plate.
The attachment / detachment mechanism according to claim 1 or 2, further comprising.

Appendix 4
The mounting portion includes a rotating portion that can rotate with respect to the main body portion and a rotating portion.
The attachment / detachment mechanism according to any one of claims 1 or 2 or 3, further comprising.

Appendix 5
A attachment / detachment mechanism for attaching / detaching a main body portion having a mounting portion at the tip portion and a working portion having an engaging portion connected to the mounting portion to / from the main body portion.
The mounting portion has a sharp ridgeline in the direction of the engaging portion, and the end face has a peak-shaped portion having a triangular mountain shape connected to the ridgeline.
The engaging portion is a contact surface on which the ridgeline of the peak-shaped portion can come into contact.
Equipped with a detachable mechanism
The main body has a mounting part that can be mounted on the traveling machine and a mounting part.
The working part is a working part capable of working on the ground.
A work machine characterized by being equipped with.

Appendix 6
The mounting portion includes a recessed groove opened in a semicircular shape on the side of the mounting portion.
A boss portion that is arranged parallel to the central axis of the depressed groove and inserts a connecting shaft that connects to the working portion.
A ridge-shaped portion arranged in the vicinity of the depressed groove and the boss portion, having a ridgeline in a direction intersecting the central axis of the depressed groove and the central axis of the boss portion, and arranged over the depressed groove and the boss portion. , Equipped with
The engaging portion includes an engaging pin that can be engaged with the recessed groove.
A hole portion in which the connecting shaft can be inserted together with the boss portion to fix the engaging portion and the mounting portion.
The working machine according to claim 5, further comprising a detachable mechanism.

Appendix 7
The engaging portion includes a connection plate for attaching the engaging pin and the boss portion, and the engaging portion.
The connection plate has an opening having an inclined portion for inserting the engaging portion, and the connection plate.
The working machine according to any one of claims 5 or 6, further comprising.

Appendix 8
The mounting portion includes a rotating portion that can rotate with respect to the main body portion and a rotating portion.
The working machine according to any one of claims 5 or 6 or 7, further comprising.

Appendix 9
The main frame to which the mounting portion is fixed and
An expansion / contraction means for connecting the main frame and the attachment / detachment mechanism,
The working machine according to any one of claims 5 or 6 or 7 or 8, further comprising.

11 Main frame 111 Mounting part (lower)
112 Mounting part (top) for mounting
21 Mast frame 211 Mast frame rotation shaft 22 Input shaft 23 Irregular part 24 Hydraulic pump 25 Directional control valve (valve unit)
212 Horizontal rotation cylinder 24 Fluid pressure generation source 25 Directional control valve 31 Oil tank 41 Expansion and contraction means 411 1st boom 411A 1st boom rotation shaft 412 1st connecting body 413 2nd boom 414 2nd connecting body 415 1st cylinder 416 2nd cylinder 417 3rd cylinder 418 4th cylinder 42 Link mechanism 51 Working part 512 Rotating shaft 6 Detachable mechanism 60 Mounting part 601 Depression groove 603 Boss part 604 Peak-shaped part 605 Ridge line 606 Rotating part 62 Connecting shaft 65 Engaging part 651 Engagement pin 652 Hole 653 Contact surface 654 Connection plate 655 Opening 656 Inclined part a Main body A Working machine B Traveling machine

Claims (9)

A attachment / detachment mechanism for attaching / detaching a main body portion having a mounting portion at the tip portion and a working portion having an engaging portion connected to the mounting portion to / from the main body portion.
The mounting portion includes a recessed groove opened in a semicircular shape on the side of the mounting portion.
A boss portion that is arranged parallel to the central axis of the depressed groove and inserts a connecting shaft that connects to the working portion.
A ridge-shaped portion arranged in the vicinity of the depressed groove and the boss portion, having a ridgeline in a direction intersecting the central axis of the depressed groove and the central axis of the boss portion, and arranged over the depressed groove and the boss portion. , Equipped with
The engaging portion includes an engaging pin that can be engaged with the recessed groove.
A hole portion in which the connecting shaft can be inserted together with the boss portion to fix the engaging portion and the mounting portion.
With the contact surface on which the ridgeline of the peak-shaped portion can come into contact,
A detachable mechanism characterized by being equipped with. The engaging portion includes a connection plate for attaching the engaging pin and the boss portion, and the engaging portion.
The connection plate has an opening having an inclined portion for inserting the engaging portion, and the connection plate.
The attachment / detachment mechanism according to claim 1, further comprising. The mounting portion includes a rotating portion that can rotate with respect to the main body portion and a rotating portion.
The attachment / detachment mechanism according to claim 1 or 2, further comprising. 7. Detachment mechanism. A attachment / detachment mechanism for attaching / detaching a main body portion having a mounting portion at the tip portion and a working portion having an engaging portion connected to the mounting portion to / from the main body portion.
The mounting portion includes a recessed groove opened in a semicircular shape on the side of the mounting portion.
A boss portion that is arranged parallel to the central axis of the depressed groove and inserts a connecting shaft that connects to the working portion.
A ridge-shaped portion arranged in the vicinity of the depressed groove and the boss portion, having a ridgeline in a direction intersecting the central axis of the depressed groove and the central axis of the boss portion, and arranged over the depressed groove and the boss portion. , Equipped with
The engaging portion includes an engaging pin that can be engaged with the recessed groove.
A hole portion in which the connecting shaft can be inserted together with the boss portion to fix the engaging portion and the mounting portion.
A detachable mechanism having a contact surface on which the ridgeline of the peak-shaped portion can come into contact is provided.
The main body has a mounting part that can be mounted on the traveling machine and a mounting part.
The work part is a work part that can work on the ground and
A work machine characterized by being equipped with. The engaging portion includes a connection plate for attaching the engaging pin and the boss portion, and the engaging portion.
The connection plate has an opening having an inclined portion for inserting the engaging portion, and the connection plate.
The working machine according to claim 5, further comprising. The mounting portion includes a rotating portion that can rotate with respect to the main body portion and a rotating portion.
The working machine according to any one of claims 5 or 6, further comprising. The main frame to which the mounting portion is fixed and
An expansion / contraction means for connecting the main frame and the attachment / detachment mechanism,
The working machine according to any one of claims 5 or 6 or 7, further comprising. Any one of claims 5 or 6 or 7 or 8, wherein the mounting portion has a ridge line sharpened in the direction of the engaging portion, and the end face is provided with a peak-shaped portion having a triangular mountain shape connected to the ridge line. Detachable mechanism described in.

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