KR102589698B1 - work tool support device - Google Patents

Abstract

The object is to provide a work tool support device having a high strength of the connection between the first arm and the second arm. The work tool support devices 1, 1A, 1B are provided with an arm portion 4 and a grip portion 3 that is disposed on the front end side of the arm portion and holds the work tool. The arm portion 4 is disposed between the first arm 41, the second arm 42, and the first arm and the second arm, and changes the angle between the first arm and the second arm. It is provided with a member (45). The angle change member 45 includes a first part 451 that is freely connected to the first arm and a second part 452 that is freely connected to the second arm and is free to slide with respect to the first part. and first sliding lock members 455, 455a, 455b that lock the second portion with respect to the first portion, and a first lock release member 456 that releases the locked state.

Description

work tool support device

The present invention relates to a work tool support device.

BACKGROUND ART A work tool support device that supports work tools such as sticks and tongs used for cutting, stripping, etc. of live wires is known. The work tool support device has a mounting portion that is fixed to a bucket of an aerial work vehicle and a grip portion that holds the work tool.

As a related technology, Patent Document 1 describes a self-helper for a work tool. The material helper for the work tool described in Patent Document 1 includes a clamp that detachably fixes the work tool, a first arm, a second arm, and rotatably connecting the other end of the first arm and one end of the second arm. It is provided with a first joint portion and a lock state control mechanism that controls the rotation state and lock state of the first joint portion.

Japanese Patent Publication No. 2017-112812

In the material helper for a work tool described in Patent Document 1, the first joint portion is locked by engagement between the gear and the locking member. For this reason, when the bucket moves unintentionally while the first joint is locked, a force in the out-of-plane direction (a direction intersecting the surface defined by the first arm and the second arm) acts on the first joint. , there is a possibility that the engagement between the gear and the locking member may become loose, or the gear or the locking member may fall out. In that case, since the locking function of the joint is lost, the arm falls due to gravity and the material helper becomes unusable.

Therefore, the object of the present invention is to provide a work tool support device with a high strength of the connection between the first arm and the second arm.

The present invention relates to a work tool support device shown below.

(1) Aambuwa;

A grip portion disposed at a front end of the arm portion and removably supporting a work tool,

The arm part,

a first arm;

a second arm that is connected to the first arm so as to be free to swing and to be angle-fixable with respect to the first arm;

An angle changing member is disposed between the first arm and the second arm and changes the angle between the first arm and the second arm,

The angle change member is,

A first part that is freely connected to the first arm,

a second part that is freely connected to the second arm and is free to slide with respect to the first part;

a first sliding lock member that locks the second portion with respect to the first portion;

A work tool support device comprising a first lock release member that releases the lock state by the first sliding lock member.

(2) The work tool support device according to (1) above, further comprising an elastic urging member that elastically urges the first sliding lock member in the locking direction.

(3) The work tool support device according to (1) or (2) above, further comprising a rotary damper disposed between the first arm and the second arm.

(4) a foot pedal for operating the first lock release member;

The work tool support device according to any one of (1) to (3) above, further comprising a wire member whose first end is connected to the first lock release member and whose second end is connected to the foot pedal.

(5) The arm part,

a third arm that is free to swing and is connected to the second arm so as to be angle-fixable with respect to the second arm;

A second angle change member is disposed between the second arm and the third arm and changes the angle between the second arm and the third arm,

The second angle change member is,

a first portion of a second angle changing member that is swingably connected to the second arm;

a second part of the second angle change member that is freely connected to the third arm and is free to slide with respect to the first part of the second angle change member;

a second sliding lock member that locks the second portion of the second angle changing member with respect to the first portion of the second angle changing member;

and a second lock release member that releases the lock state caused by the second sliding lock member,

A third end of the wire member is connected to the second lock release member,

The work tool support device according to (4), wherein the foot pedal is capable of simultaneously unlocking the first sliding lock member and unlocking the second sliding lock member.

(6) a mounting portion disposed on the proximal side of the arm portion and being freely attachable to and detachable from the bucket of the aerial work vehicle;

a sliding part that is mounted directly or indirectly on the arm part and moves horizontally integrally with the arm part;

a horizontally movable locking member that locks the sliding portion with respect to the mounting portion;

Further comprising a horizontal movement operation unit mounted on the sliding unit,

When the horizontal movement operation unit is pressed toward the horizontal first direction, the lock state by the horizontal movement lock member is released, and the sliding portion and the arm portion move in the horizontal first direction,

When the horizontally movable operation unit is pressed in a horizontal second direction opposite to the horizontal first direction, the lock state by the horizontally movable lock member is released, and the sliding portion and the arm portion are moved in the horizontally second direction. The work tool support device according to any one of (1) to (5) above, which moves in one direction.

(7) The work tool support device according to (6), wherein the horizontal movement operating portion protrudes toward the inside of the bucket so as to be operable by the knee.

By the present invention, it is possible to provide a work tool support device with a high strength of the connection between the first arm and the second arm.

Fig. 1 is a schematic side view of a work tool support device in a first embodiment.
Figure 2 is a schematic diagram showing an example of a mechanism for locking the second part with respect to the first part.
Figure 3 is a schematic diagram showing another example of a mechanism for locking the second part with respect to the first part.
Fig. 4 is a schematic side view of the work tool support device in the second embodiment.
Fig. 5 is a schematic diagram showing an example of a mechanism for locking the second part of the second angle changing member with respect to the first part of the second angle changing member.
Fig. 6 is a schematic side view of the work tool support device in the second embodiment.
Fig. 7 is a schematic side view of the work tool support device in the second embodiment.
Fig. 8 is a schematic front view of the work tool support device in the second embodiment.
Figure 9 is a schematic diagram showing an example of a mechanism for locking the sliding portion with respect to the second guide portion.

Hereinafter, the work tool support device 1 in the embodiment will be described in detail with reference to the drawings. In addition, in this specification, members having the same function are given the same or similar symbols. Additionally, for members with the same or similar symbols, repeated explanations may be omitted.

(First Embodiment)

With reference to FIGS. 1 to 3, the work tool support device 1A in the first embodiment will be described. Fig. 1 is a schematic side view of a work tool holding device 1A in the first embodiment. FIG. 2 is a schematic diagram showing an example of a mechanism for locking the second part 452 with respect to the first part 451. FIG. 3 is a schematic diagram showing another example of a mechanism for locking the second part 452 with respect to the first part 451.

The work tool support device 1A in the first embodiment includes a mounting portion 2 that can be attached and detached to a bucket of an aerial work vehicle, a grip portion 3 that can freely attach and detachably support a work tool T, and a mounting portion. It has an arm portion (4) disposed between (2) and the grip portion (3). A gripping portion 3 is disposed on the distal end side of the arm portion 4, and a mounting portion 2 is disposed on the proximal end side of the arm portion 4.

The mounting portion 2 includes, for example, a base portion 21 and a moving portion 22 that can approach and move away from the base portion 21. The mounting portion 2 is fixed to the bucket by sandwiching the wall portion of the bucket with the base portion 21 and the moving portion 22. Additionally, the arm portion 4 and the mounting portion 2 may be freely attached and detached. In this case, when using an existing mounting part as the mounting part 2, there is no need for the mounting part 2 to be installed in the work tool support device 1A itself. In other words, the arm portion 4 of the work tool support device 1A may be mounted on the existing mounting portion 2.

The holding portion 3 includes, for example, a first holding member 31 and a second holding member 33. By holding the work tool T between the first holding member 31 and the second holding member 33, the working tool T is fixed to the holding portion 3.

The arm portion 4 is provided with a first arm 41, a second arm 42, and an angle changing member 45 that changes the angle between the first arm 41 and the second arm 42. do. In the example shown in FIG. 1 , the first arm 41 is an arm on the mounting portion 2 side, and the second arm 42 is an arm on the gripping portion 3 side. Additionally, the first arm 41 and the second arm 42 are, for example, made of FRP.

The second arm 42 is connected to the first arm 41 so that it can swing freely (more specifically, it can swing freely around the swing axis AT1). In addition, the second arm 42 is connected to the first arm 41 so as to be angle-fixable. More specifically, by locking the second part 452, which will be described later, with respect to the first part 451, the angle of the second arm 42 with respect to the first arm 41 is fixed.

The angle change member 45 is disposed between the first arm 41 and the second arm 42 . The angle change member 45 changes the distance between the first rocking axis AX1, which will be described later, and the second rocking axis AX2, which will be described later, to change the angle between the first arm 41 and the second arm 42. Change . The angle change member 45 includes a first part 451, a second part 452, a first sliding lock member 455 (see FIG. 2, etc.), and a first lock release member 456. Equipped with

The first portion 451 is freely connected to the first arm 41 on the first swing axis AX1. In the example shown in FIG. 1, the first arm 41 is provided with a protrusion 411 that protrudes to the side of the first arm 41, and the first swing axis AX1 is disposed on the protrusion 411. there is. In addition, the first swing axis AX1 is, for example, the central axis of the pin inserted into the hole of the protrusion 411 and the hole of the first portion 451.

The second portion 452 is freely connected to the second arm 42 on the second swing axis AX2. In the example shown in FIG. 1, the second arm 42 is provided with a protrusion 421 that protrudes to the side of the second arm 42, and the second swing axis AX2 is disposed on the protrusion 421. there is. In addition, the second swing axis AX2 is, for example, the central axis of the pin inserted into the hole of the protrusion 421 and the hole of the second portion 452.

The second part 452 is free to slide with respect to the first part 451. As the second part 452 slides with respect to the first part 451, the distance between the first rocking axis AX1 and the second rocking axis AX2 changes. As a result, the angle between the first arm 41 and the second arm 42 changes.

With reference to FIG. 2 , an example of a mechanism for locking the second part 452 with respect to the first part 451 will be described.

In the example shown in FIG. 2, the angle change member 45 includes a first part 451, a second part 452, a first sliding lock member 455, a first lock release member 456, and a load transmission member. It is provided with a member 457 and an elastic pressing member 459.

In the example shown in FIG. 2, when the first sliding lock member 455 is pressed against both the inner surface of the first part 451 and the outer surface of the second part 452, the second part 452 is Locked for part 1 (451). More specifically, in a state where no force is acting on the first lock release member 456, the first sliding lock member 455a is pushed by the elastic urging force of the first elastic urging member 459a, such as a spring, It is pushed into the first part 451 and the second part 452. Additionally, the first sliding lock member 455b is pressed against the first part 451 and the second part 452 by the elastic urging force of the second elastic urging member 459b, such as a spring. In this way, the second part 452 is locked to the first part 451.

On the other hand, when the first lock release member 456 receives force in the direction indicated by arrow AR1, the load transmission member 457 moves (rotates). Then, when the load transmission member 457 moves (rotates), the first sliding lock member 455a moves in a direction away from the inner surface (more specifically, the tapered surface) of the first portion 451, The first sliding lock member 455b moves in a direction away from the inner surface (more specifically, the tapered surface) of the first portion 451 (state shown in FIG. 2). In this way, the lock by the first sliding lock member 455 (that is, the locked state of the second part 452 with respect to the first part 451) is released.

In addition, FIG. 2 illustrates an example in which the first sliding lock members 455 have a plurality of spheres, but the number and shape of the first sliding lock members 455 are not limited to the example shown in FIG. 2. .

As a mechanism for connecting the first part 451 and the second part 452 in a sliding and lockable manner, a known mechanism different from the mechanism shown in FIG. 2 may be employed. For example, Quick Clamper (registered trademark) manufactured by TALK SYSTEM CO., LTD. More specifically, a lever unit (model number: TUWL08 or TUWL16) manufactured by TALK SYSTEM CO., LTD. may be adopted. . Alternatively, the mechanism described in each example or each reference example of Japanese Patent Application Laid-Open No. 2014-66365 may be employed.

In the example shown in FIGS. 1 and 2 , by manipulating the first lock release member 456, the load transmission member 457 moves (rotates), and the second portion 452 relative to the first portion 451 The lock state is released. And, in the unlocked state, it is possible to adjust the position of the gripping portion 3 by changing the angle between the first arm 41 and the second arm 42.

Additionally, in a state in which no operating force is applied to the first lock release member 456 (normal state), the second part 452 is locked with respect to the first part 451. In this way, it is possible to fix the angle between the first arm 41 and the second arm 42 and fix the position of the grip portion 3.

In the material helper described in Patent Document 1, since the first joint is locked by engagement between the gear and the locking member, the fixing angle between the first arm and the second arm depends on the spacing between the teeth of the gear. In other words, the fixation angle between the first arm and the second arm changed in steps, and the fixation angle could not be changed continuously. On the other hand, the work tool support device 1A in the first embodiment includes an angle changing member 45 that changes the angle between the first arm 41 and the second arm 42, and changes the angle. The member 45 includes a first part 451, a second part 452 that is free to slide with respect to the first part 451, and the second part 452 is locked with respect to the first part 451. It is provided with a first sliding lock member 455 that releases the first sliding lock member 455 and a first lock release member 456 that releases the locked state by the first sliding lock member 455. For this reason, the fixing angle between the first arm 41 and the second arm 42 can be continuously changed.

Moreover, in the work tool support device 1A in the first embodiment, the first arm 41 and the second arm 42 are connected so as to swing freely, and the angle change member 45 (more specifically, The first part 451) and the first arm 41 are connected so as to be able to swing, and the angle changing member 45 (more specifically, the second part 452) and the second arm 42 are swingably connected. It is freely connected. In other words, the first arm 41, the second arm 42, and the angle change member 45 form a triangular structure (a unit unit of a truss structure). Therefore, even if an unintended force acts in a direction intersecting the surface defined by the first arm 41 and the second arm 42, the force is applied to the first arm 41 and the second arm 42. ), as well as the connection portion of the angle change member 45 (first portion 451) and the first arm 41 (projection 411) and the angle change member 45 (second portion 452 )) and the connection portion of the second arm 42 (projection 421). Accordingly, the strength of the connection between the first arm 41 and the second arm 42 increases. Therefore, the strength can be maintained even if the thickness of the first arm 41 and the second arm 42 is thin, and the work tool support device 1A can be lightweight.

In addition, in the material helper for the work tool described in Patent Document 1, when the engagement between the gear and the locking member is loosened or the gear or the locking member is dislodged, the locking function is lost, the arm is lowered by gravity, and the material helper becomes unusable. On the other hand, in the work tool support device 1A in the first embodiment, the bucket unintentionally moves while the first arm 41 and the second arm 42 are locked, and the first arm 41 and the second arm 42 are locked. Even if an overload is applied to the surface defined by the second arm 42, the first portion 451 and the second portion 452 of the angle change member 45 may slip and release the load. And, after releasing the load, the first part 451 and the second part 452 are caught again, so the range in which the first arm 41 and the second arm 42 descend by gravity is limited. . Therefore, after the load disappears, the work can be resumed from the position where the first part 451 and the second part 452 are again placed, thereby improving the convenience of work. Additionally, since slippage occurs in the first portion 451 and the second portion 452, it becomes difficult for the work tool support device 1A to be damaged.

As described above, in the work tool support device 1A in the first embodiment, the angle change member 45 continuously adjusts the angle between the first arm 41 and the second arm 42. An adjustment function, an angle fixing function for fixing the angle between the first arm 41 and the second arm 42, and a strengthening function for increasing the strength of the connection between the first arm 41 and the second arm 42. And it has a plurality of different functions (effects) such as weight reduction, improvement of work convenience when overload is applied, and damage prevention. Additionally, the angle fixation between the first arm 41 and the second arm 42 can be released by simply manipulating the first lock release member 456, and the work burden is small.

Moreover, in the example shown in FIG. 2, the angle change member 45 is provided with the elastic urging member 459 which elastically urges the 1st sliding lock member 455 in the locking direction. In the case where an elastic pressing member 459 is provided to elastically press the first sliding lock member 455 in the locking direction, in a state where no operating force is applied to the first unlocking member 456 (i.e., normal state) In this way, the angle between the first arm 41 and the second arm 42 is maintained. For this reason, even if any failure occurs in the work tool support device 1A, the gripping portion 3 does not fall suddenly. Therefore, the safety of the worker is ensured.

(one-way lock)

In the example shown in FIG. 2, the lock of the second part 452 to the first part 451 is a two-way lock. Alternatively, the lock of the second part 452 with respect to the first part 451 may be a one-way lock. In other words, in the locked state by the first sliding lock member 455, the second part 452 cannot move in the first direction with respect to the first part 451, but moves in the first direction opposite to the first direction. It may be allowed to move in the second direction, which is the direction of . For example, in the example shown in FIG. 3 , when the second portion 452 is pulled in the first direction, the narrowness of the first portion 451 and the second portion 452 relative to the first sliding lock member 455 Because the force increases, the second portion 452 cannot move in the first direction. In contrast, when the second part 452 is pulled in the second direction, the clamping force of the first part 451 and the second part 452 with respect to the first sliding lock member 455 is reduced, so that the second part 452 is pulled in the second direction. Portion 452 is movable in the second direction.

Referring to FIG. 1, moving the second portion 452 in the second direction relative to the first portion 451 corresponds to moving the grip portion 3 upward. That is, when a one-way lock is adopted as the lock of the second part 452 with respect to the first part 451, it is possible to move the holding portion 3 upward even in the locked state. Accordingly, the upward movement of the gripping portion 3 becomes easy. Moreover, even in the case of employing a one-way lock, the gripping part 3 does not fall in the locked state, so there is no problem in fixing the position of the gripping part 3.

(Mechanism for operating the first lock release member 456)

With reference to FIG. 1, a mechanism for operating the first lock release member 456 will be described. The work tool support device 1A includes a foot pedal 7 that operates the first unlocking member 456, a first end 81 connected to the first unlocking member 456, and a second end ( 82) has a wire member (8) connected to the foot pedal (7).

In the example shown in FIG. 1 , when the foot pedal 7 is stepped on, the wire member 8 is pulled and the first lock release member 456 is operated. And, when the first lock release member 456 is operated, the lock state (lock state of the second part 452 with respect to the first part 451) by the first sliding lock member 455 is released. In addition, it is preferable that the wire member 8 is disposed within the tube 85 and that the wire member 8 is supported by the tube 85 so as to be slidably movable.

When the work tool support device 1A is provided with a foot pedal 7, the first lock release member 456 can be operated with the foot. Therefore, it is possible to release the lock state by the first sliding lock member 455 while the worker supports the work tool T with both hands or one hand. For this reason, the burden on the operator is reduced. In contrast, when the first lock release member 456 is operated by hand, the worker supports the work tool T (or the grip portion 3 or the arm portion 4) with one hand. Needs to be. Alternatively, another worker is required to unlock the first lock release member 456.

Additionally, when the force acting on the foot pedal 7 is transmitted to the first lock release member 456 using the wire member 8, the structure of the transmission mechanism is simple and highly reliable. In contrast, when a transmission mechanism using hydraulic pressure is used, the weight of the work tool support device 1A increases and the structure of the work tool support device 1A becomes complicated. Additionally, there is a risk of oil leakage.

The foot pedal 7 is, for example, a toggle-type foot pedal. In this case, when the foot pedal 7 is depressed once, the lock state by the first sliding lock member 455 is released, and when the foot pedal is depressed once more, the first sliding lock member 455 locks the second part ( 452) is locked to the first part 451. In addition, after pressing the foot pedal 7 once, it is desirable that the lock release state is maintained even if the foot is removed from the foot pedal 7. In this case, the operator can adjust the position of the gripping portion 3 with both feet placed on the floor.

Alternatively, the foot pedal 7 may be a foot pedal other than a toggle type. For example, when the foot pedal 7 is pressed, the lock state by the first sliding lock member 455 is released, and when the foot pedal 7 is released, the first sliding lock member 455 The lock state may be maintained by .

Additionally, when the foot pedal 7 is pressed halfway, the first sliding lock member 455 may be in an intermediate state between the locked state and the unlocked state. In this case, the position of the work tool T can be finely adjusted by applying force to the work tool T (or the grip part 3 or the arm part 4).

(Rotary damper (49))

The work tool support device 1A in the first embodiment may be provided with a rotary damper 49 disposed between the first arm 41 and the second arm 42. The rotary damper 49 provides resistance when the second arm 42 swings relative to the first arm 41. For this reason, when the lock state by the first sliding lock member 455 is released, the holding portion 3 and the second arm 42 do not fall suddenly. Therefore, when the lock state is released, the gravitational force of the work tool T, the grip portion 3, and the second arm 42 does not suddenly apply to the operator holding the work tool T. Therefore, operator convenience improves.

In addition, when the work tool support device 1A is provided with the rotary damper 49, for example, the angle change member 45 is damaged and the normal state (no operating force is applied to the first lock release member 456) Even if the function of maintaining the angle between the first arm 41 and the second arm 42 is lost, the gripping portion 3 and the second arm 42 do not fall suddenly. . In this case, the work tool support device 1A has a function of maintaining the angle in the normal state by the angle change member 45 and a function of applying a resistance force by the rotary damper 49, and both functions allow the operator to Safety is doubled.

(Mounting part (2))

In the example shown in FIG. 1, the mounting part 2 includes a base part 21, a moving part 22 that can approach and separate from the base part 21, and a moving part operating part 23. In the example shown in FIG. 1, the base portion 21, when viewed from the side, includes a first leg portion 211, a second leg portion 212, a first leg portion 211, and a second leg portion ( It has a connection part 213 connecting 212). The first leg portion 211 is disposed opposite to the first surface (e.g., inner surface) of the side wall of the bucket, and the second leg portion 212 is disposed opposite to the second surface (e.g., outer surface) of the side wall of the bucket. ) is placed opposite.

The moving unit operating unit 23 is mounted on the second leg unit 212, and by operating the moving unit operating unit 23, the moving unit 22 moves closer to the first leg unit 211. In this way, the wall portion of the bucket is sandwiched between the moving portion 22 and the first leg portion 211, and the mounting portion 2 is fixed to the wall portion of the bucket.

Additionally, in the example shown in FIG. 1, the base portion 21 has an inverted U shape when viewed from the side. For this reason, even if the fixation of the mounting portion 2 to the bucket wall is insufficient and the mounting portion 2 flows downward, the upper portion of the inverted U shape (i.e., the connecting portion 213) is attached to the upper edge of the bucket wall. caught in Therefore, the mounting portion 2 does not fall off from the bucket wall portion.

(Second Embodiment)

With reference to FIGS. 4 to 9, the work tool support device 1B in the second embodiment will be described. 4, 6, and 7 are schematic side views of the work tool support device 1B in the second embodiment. In addition, FIG. 4 shows a state in which the arm portion 4 of the work tool support device 1B is extended by a predetermined amount, and FIG. 6 shows the arm portion 4 of the work tool support device 1B in FIG. It shows a state in which the arm portion 4 of the work tool support device 1B is folded, showing a state in which it is further extended than the displayed state. FIG. 5 is a schematic diagram showing an example of a mechanism for locking the second part 552 of the second angle change member with respect to the first part 551 of the second angle change member. Fig. 8 is a schematic front view of the work tool support device 1B in the second embodiment. FIG. 9 is a schematic diagram showing an example of a mechanism for locking the sliding portion 92 with respect to the second guide portion 29.

In the work tool support device 1B in the second embodiment, the arm portion 4 is provided with a third arm 53 in addition to the first arm 41 and the second arm 42. Additionally, the arm portion 4 includes, in addition to the angle changing member 45, a second angle changing member 55 that changes the angle between the second arm 42 and the third arm 53. The third arm 53 is, for example, made of FRP.

In the second embodiment, description will be made focusing on points that are different from the first embodiment, and repeated descriptions of matters already explained in the first embodiment will be omitted.

In the example shown in Fig. 4, the base end of the first arm 41 is connected to the mounting portion 2 (more specifically, the upper surface of the base portion 21). The connection between the proximal end of the first arm 41 and the mounting portion 2 may be a horizontally movable connection that allows the first arm 41 to move horizontally relative to the mounting portion 2, and the first arm 41 This may be a pivotable connection that allows rotation about the longitudinal axis of the first arm 41, or it may be a connection that is not horizontally movable and may also be non-pivotable.

In the example shown in FIG. 4, the proximal end of the second arm 42 is connected to the distal end of the first arm 41, and an angle changing member 45 is provided between the second arm 42 and the first arm 41. It is placed. Since the description of the first arm 41, the second arm 42, and the angle changing member 45 has been completed in the first embodiment, repeated descriptions will be omitted.

In the example shown in FIG. 4, the proximal end of the third arm 53 is connected to the distal end of the second arm 42, and a second angle change member 55 is provided between the third arm 53 and the second arm 42. ) is placed.

The third arm 53 is connected to the second arm 42 so that it can swing freely (more specifically, it can swing freely around the swing axis AT2). Additionally, the third arm 53 is connected to the second arm 42 so that the angle can be fixed. More specifically, by locking the second part 552 of the second angle change member, which will be described later, with respect to the first part 551 of the second angle change member, the third arm 53 relative to the second arm 42 ) is fixed.

The second angle change member 55 is disposed between the second arm 42 and the third arm 53. The second angle change member 55 changes the distance between the third rocking axis AX3, which will be described later, and the fourth rocking axis AX4, which will be described later, between the second arm 42 and the third arm 53. Change the angle. The second angle changing member 55 includes a second angle changing member first part 551, a second angle changing member second part 552, and a second sliding lock member 555 (see FIG. 5). and a second lock release member 556.

The second angle changing member first portion 551 is freely connected to the second arm 42 on the third swing axis AX3. The third swing axis AX3 is, for example, the central axis of a pin inserted into the hole of the second arm 42 and the hole of the second angle change member first portion 551.

The second angle changing member second portion 552 is freely connected to the third arm 53 on the fourth swing axis AX4. The fourth swing axis AX4 is, for example, the central axis of a pin inserted into the hole of the third arm 53 and the hole of the second angle change member second portion 552.

The second part 552 of the second angle change member is free to slide with respect to the first part 551 of the second angle change member. As the second angle changing member second part 552 slides with respect to the second angle changing member first part 551, the distance between the third rocking axis AX3 and the fourth rocking axis AX4 changes. As a result, the angle between the second arm 42 and the third arm 53 changes.

Regarding the mechanism for locking the second angle changing member second part 552 with respect to the second angle changing member first part 551, the mechanism for locking the second part 452 with respect to the first part 451 includes: Since they are the same, repeated explanations are omitted. In addition, in the description of the above-mentioned “mechanism for locking the second part 452 with respect to the first part 451”, “angle change member 45”, “first part 451”, and “second part 451” “Part 452”, “First sliding lock member (455, 455a, 455b)”, “First lock release member (456)”, “Load transmission member (457)”, “Elastic pressing member (459)”, “First elastic pressing member 459a”, “Second elastic pressing member 459b”, “Figure 1”, “Figure 2”, “First arm 41”, and “Second arm 42” ", respectively, "second angle change member 55", "second angle change member first part 551", "second angle change member second part 552", and "second sliding lock member ( 555, 555a, 555b)”, “second lock release member 556”, “load transmission member 557”, “elastic pressing member 559”, “first elastic pressing member 559a”, “first 2 Elastic pressing member 559b", "FIG. 4", "FIG. 5", "second arm 42", and "third arm 53", the second angle change member second part This explains the mechanism for locking (552) with respect to the first part (551) of the second angle changing member. In addition, the lock of the second angle changing member second part 552 with respect to the second angle changing member first part 551 may be a two-way lock or a one-way lock.

The work tool holding device 1B in the second embodiment has the same effect as the work tool holding device 1A in the first embodiment. In addition, the arm portion 4 of the work tool support device 1B in the second embodiment includes three arms (the first arm 41, the second arm 42, and the third arm 53). Equipped with For this reason, the degree of freedom in determining the position of the work tool T and the degree of freedom in the approach path when moving the work tool T to the desired position are high. In addition, the number of arms included in the arm portion 4 of the work tool support device 1B in the second embodiment may be four or more.

Additionally, the work tool support device 1B in the second embodiment is provided with a second angle changing member 55 that changes the angle between the second arm 42 and the third arm 53. The second angle changing member 55 includes a second angle changing member first part 551 and a second angle changing member second part 552 that is free to slide with respect to the second angle changing member first part 551. and a second sliding lock member 555 that locks the second part 552 of the second angle change member with respect to the first part 551 of the second angle change member, and a second sliding lock member 555. and a second lock release member 556 that releases the lock state. For this reason, the fixing angle between the second arm 42 and the third arm 53 can be continuously changed.

Moreover, in the work tool support device 1B in the second embodiment, the second arm 42, the third arm 53, and the second angle change member 55 are similar to the first embodiment. It forms a triangular structure (unit of truss structure). Therefore, the strength of the connection between the second arm 42 and the third arm 53 is high.

In the second embodiment, the work tool support device 1B includes a foot pedal 7 for operating the first unlocking member 456 and the second unlocking member 556, and a first end 81. A wire member (8) connected to the first unlocking member (456), the second end (82) connected to the foot pedal (7), and the third end (83) connected to the second unlocking member (556). ) is desirable to have.

In the example shown in FIG. 4 , when the foot pedal 7 is stepped on, the wire member 8 is pulled and the first unlocking member 456 and the second unlocking member 556 are operated. And, when the first lock release member 456 and the second lock release member 556 are operated, a locked state by the first sliding lock member 455 and a locked state by the second sliding lock member 555 is released at the same time. In addition, in the wire member 8, the wire connecting the first lock release member 456 and the foot pedal 7 and the wire connecting the second lock release member 556 and the foot pedal 7 are: Each wire may be different. Alternatively, the wire connecting the first lock release member 456 and the foot pedal 7 and the wire connecting the second lock release member 556 and the foot pedal 7 may be partially shared. .

When the work tool support device 1B is provided with a foot pedal 7, a first lock release member 456, and a wire member 8 connected to the second lock release member 556, the first lock release member 556 is connected to the first lock release member 556. The lock release operation by the member 456 and the second lock release member 556 can be performed simultaneously with the foot. Therefore, there is no need to individually perform lock release operations, so work efficiency is high. Additionally, as the foot pedal 7 in the second embodiment, it is possible to adopt the same foot pedal as the foot pedal 7 in the first embodiment.

(rotary damper (59))

The work tool support device 1B in the second embodiment may be provided with a rotary damper 59 disposed between the second arm 42 and the third arm 53. The rotary damper 59 provides resistance when the third arm 53 swings relative to the second arm 42. For this reason, when the lock state by the second sliding lock member 555 is released, the gripping portion 3 and the third arm 53 do not fall suddenly. Therefore, like the first embodiment, operator convenience is improved.

(Vibrating part (6))

In the example shown in FIG. 4 , the work tool support device 1B includes a vibrating portion 6 that is freely connected to the arm portion 4 (more specifically, the third arm 53).

The vibration unit 6 is connected to the tip of the third arm 53. Additionally, a third angle change member 65 is disposed between the vibration unit 6 and the third arm 53.

The vibration unit 6 is connected to the third arm 53 so that it can swing freely (more specifically, it can swing freely around the swing axis AT3). In addition, the vibration unit 6 is connected to the third arm 53 so as to be angle-fixable. More specifically, by locking the third angle change member second part 652 with respect to the third angle change member first part 651, the angle of the vibration unit 6 with respect to the third arm 53 is fixed.

The third angle change member 65 is disposed between the third arm 53 and the vibration unit 6. The third angle change member 65 changes the distance between the fifth rocking axis AX5, which will be described later, and the sixth rocking axis AX6, which will be described later, so as to adjust the distance between the third arm 53 and the vibration unit 6. Change the angle. The third angle change member 65 includes a third angle change member first part 651, a third angle change member second part 652, a third sliding lock member (not shown), and a third lock. It has a release member 656.

The third angle change member first portion 651 is swingably connected to the third arm 53 on the fifth swing axis AX5. In addition, the third angle change member second portion 652 is freely connected to the vibration section 6 on the sixth swing axis AX6.

The third angle changing member second part 652 is free to slide with respect to the third angle changing member first part 651. As the third angle changing member second part 652 slides with respect to the third angle changing member first part 651, the distance between the fifth rocking axis AX5 and the sixth rocking axis AX6 changes. As a result, the angle between the third arm 53 and the vibration unit 6 changes.

Regarding the mechanism for locking the third angle changing member second part 652 with respect to the third angle changing member first part 651, the mechanism for locking the second part 452 with respect to the first part 451 includes: Since they are the same, repeated explanations are omitted.

When the work tool support device 1B is provided with the vibration portion 6, the wire member 8 connected to the foot pedal 7 has a fourth end connected to the third lock release member 656 ( 84), it is desirable to have it.

In the example shown in FIG. 4, when the foot pedal 7 is stepped on, the wire member 8 is pulled, and the first lock release member 456, the second lock release member 556, and the third lock release member ( 656) is manipulated. And, when the first lock release member 456, the second lock release member 556, and the third lock release member 656 are operated, the locked state by the first sliding lock member 455 and the second sliding The locked state by the lock member 555 and the locked state by the third sliding lock member are released simultaneously.

Additionally, when the number of arms provided in the arm portion 4 is N (N is a natural number of 2 or more), the vibrating portion 6 is connected to the distal arm, that is, the Nth arm so as to be able to swing freely.

In the example shown in FIG. 4, the oscillation axis AT1 between the first arm 41 and the second arm 42 and the oscillation axis AT2 between the second arm 42 and the third arm 53 are parallel. The coaxial AT1 and the oscillating axis AT2 do not have to be parallel. In addition, in the example shown in FIG. 4, the rocking axis AT2 between the second arm 42 and the third arm 53 and the rocking axis AT3 between the third arm 53 and the vibration unit 6 are parallel, The oscillation axis AT2 and the oscillation axis AT3 do not have to be parallel.

In the second embodiment, when the arm portion 4 is extended, the angle formed between the first arm 41 and the second arm 42 is greater than 90 degrees, and the angle between the second arm 42 and the third arm 42 is greater than 90 degrees. It is preferable that the angle formed between the arms 53 is greater than 90 degrees (see Figure 6). In this case, the gripping portion 3 can be brought to a position that is greatly spaced from the bucket. Moreover, in the second embodiment, when the arm portion 4 is folded, the angle formed between the first arm 41 and the second arm 42 is 90 degrees or less, and the angle between the second arm 42 and the second arm 42 is 90 degrees or less. It is preferable that the angle between the three arms 53 is 90 degrees or less (see Figure 7). In this case, the arm portion 4 can be folded compactly. Moreover, in the example shown in FIG. 7, when the arm portion 4 is folded, the second arm 42 and the third arm 53 are parallel.

(Grip part (3))

The gripping portion 3 is connected to the vibrating portion 6 or the distal arm (for example, the third arm 53). The connection between the gripping portion 3 and the vibrating portion 6 or the distal arm may be a rotatable connection or a non-rotatable connection.

The gripping part 3 is not particularly limited as long as it can grip the work tool T. In the example shown in FIG. 4, the gripping part 3 includes the first gripping member 31 (fixing member) and the left and right It has a second holding member 33 (movable member) capable of moving in parallel with respect to the first holding member 31 via two guide rods 32 . The guide rod 32 fixed vertically upward in the longitudinal direction of the first holding member 31 is inserted into a guide hole (not shown) of the second holding member 33 that can move in parallel. Additionally, a coil spring 34 is fitted into the guide rod 32 to maintain the second holding member 33 at an appropriate distance from the first holding member 31 to facilitate insertion of the work tool. And, on the opposing surfaces of the first holding member 31 and the second holding member 33, a holding portion (not shown) having a substantially V-shaped cross section for holding the work tool is formed. In addition, a fastening member 36 is connected to the second holding member 33, and an operation unit 37 that operates the fastening and unfastening operations by the fastening member 36 is mounted on the fastening member 36. It is done.

When gripping the work tool T by the gripper 3, the work tool T is inserted between the first gripper 31 and the second gripper 33, and the operation portion 37 is operated. , By operating the fastening member 36, the second holding member 33 is brought closer to the first holding member 31. In this way, the work tool T is held between the first holding member 31 and the second holding member 33.

(Horizontal movement mechanism of arm portion 4)

Referring to FIG. 8, the arm portion 4 may be connected to the mounting portion 2 so as to be movable in a horizontal first direction and a horizontal second direction opposite to the horizontal first direction. In this case, the arm portion 4 can be positioned horizontally with respect to the mounting portion 2.

In the example shown in FIG. 8, the work tool support device 1B includes a sliding portion 92 that is mounted directly or indirectly on the arm portion 4 and moves horizontally integrally with the arm portion 4, and a sliding portion It is provided with a horizontally movable locking member 95 (see FIG. 9) that locks the 92 with respect to the mounting portion 2 and a horizontal movement operating portion 90 mounted on the sliding portion 92.

Additionally, the work tool support device 1B may be provided with a guide portion that guides the horizontal movement of the arm portion 4 or the arm accommodating portion of the mounting portion 2. The guide portion 28 is, for example, a guide rail 281 installed on the mounting portion 2. The guide rail 281 extends in the width direction of the mounting portion 2 (in other words, a horizontal direction and a direction parallel to the wall surface of the bucket). In the example shown in FIG. 8 , the guide rail 281 is disposed on the upper surface of the base portion 21 of the mounting portion 2. For this reason, the movement of the arm portion 4 does not interfere with the operator within the bucket.

The sliding portion 92 is mounted directly or indirectly on the arm portion 4 (more specifically, the first arm 41) and moves horizontally integrally with the arm portion 4. The horizontally movable locking member 95 (see FIG. 9 ) locks the sliding portion 92 with respect to the second guide portion 29 . In the example shown in FIG. 8 , the second guide portion 29 is installed on the mounting portion 2. For this reason, the horizontally movable locking member 95 may be said to be a locking member capable of prohibiting horizontal movement of the arm portion 4 (more specifically, the first arm 41) with respect to the mounting portion 2. In addition, the second guide portion 29 is, for example, a second guide rail 291 extending in a direction parallel to the guide portion 28 (guide rail 281).

In the example shown in FIG. 9, the work tool support device 1B includes a second guide portion 29, a sliding portion 92 capable of sliding relative to the second guide portion 29, and a horizontally movable lock member 95. ), an elastic pressing member 99, and a horizontal movement operation unit 90. Additionally, the elastic pressing member 99 is a member that elastically presses the horizontally movable locking member 95 in the locking direction.

In the example shown in FIG. 9 , when the horizontally movable locking member 95 is pressed against both the inner surface of the sliding portion 92 and the outer surface of the second guide portion 29, the sliding portion 92 moves toward the second guide portion. Locked for part 29. More specifically, in a state in which no force is acting on the horizontal movement operation unit 90 (i.e., a neutral state of the horizontal movement operation unit 90), the first horizontal movement lock member 95a is connected to the first horizontal movement lock member 95a, such as a spring. It is pushed against the sliding portion 92 and the second guide portion 29 by the elastic pressing force of the elastic pressing member 99a. Additionally, the second horizontally movable lock member 95b is pushed against the sliding portion 92 and the second guide portion 29 by the elastic urging force of the second elastic urging member 99b, such as a spring. In this way, the sliding part 92 is locked with respect to the second guide part 29.

In the example shown in FIG. 9 , when the horizontal movement operation unit 90 is pressed in the horizontal first direction, the lock by the horizontal movement lock member 95 is released, and at the same time, the pressing force against the horizontal movement operation unit 90 changes to a sliding state. Because it acts on the portion 92, the arm portion 4 moves together with the sliding portion 92 in the first horizontal direction. More specifically, when the horizontal movement operation unit 90 receives force in the direction indicated by arrow AR2, the load transmission member 97 moves (rotates). Then, when the load transmission member 97 moves (rotates), the first horizontally movable lock member 95a moves in a direction away from the inner surface (more specifically, the tapered surface) of the sliding portion 92, The second horizontally movable lock member 95b moves in a direction away from the inner surface (more specifically, the tapered surface) of the sliding portion 92 (state shown in FIG. 9). In this way, the lock by the horizontally movable locking member 95 (that is, the locked state of the sliding portion 92 with respect to the second guide portion 29) is released. Since a force acts on the sliding part 92 in the direction indicated by arrow AR2 through the horizontal movement operation part 90, the sliding part 92 and the arm part 4 move in the direction indicated by arrow AR2. move

Moreover, in the example shown in FIG. 9 , when the horizontal movement operation unit 90 is pressed in the horizontal second direction, the lock by the horizontal movement lock member 95 is released, and at the same time, the pressing force against the horizontal movement operation unit 90 is released. Because this acts on the sliding portion 92, the arm portion 4 moves together with the sliding portion 92 in the horizontal second direction. More specifically, when the horizontal movement operation unit 90 receives force in the direction indicated by arrow AR3, the load transmission member 97 moves (rotates). Then, when the load transmission member 97 moves (rotates), the first horizontally movable lock member 95a moves in a direction away from the inner surface (more specifically, the tapered surface) of the sliding portion 92, The second horizontally movable lock member 95b moves in a direction away from the inner surface (more specifically, the tapered surface) of the sliding portion 92. In this way, the lock by the horizontally movable locking member 95 (that is, the locked state of the sliding portion 92 with respect to the second guide portion 29) is released. Since a force acts on the sliding part 92 in the direction indicated by arrow AR3 through the horizontal movement operation part 90, the sliding part 92 and the arm part 4 move in the direction indicated by arrow AR3. move

In the example shown in FIG. 9 , when the horizontal movement operation unit 90 is pressed toward the horizontal first direction (or the horizontal second direction), the locking state by the horizontal movement lock member 95 is released, and the arm portion 4 ) moves in the horizontal first direction (horizontal second direction). For this reason, unlocking and horizontal movement of the arm portion 4 can be realized through a single operation. For this reason, the burden on the operator when adjusting the position of the arm portion 4 in the horizontal direction is reduced, and the operator's work efficiency is improved.

Additionally, the horizontal movement operation unit 90 is preferably arranged to protrude from the base portion 21 toward the inside of the bucket so that it can be operated by the operator's knee. By arranging the horizontal movement operation portion 90 in a position where it can be operated with the knees, the work tool support device 1B can be moved left and right with respect to the bucket even when both hands are busy. In addition, the horizontal movement operation unit 90 is positioned at a height close to the upper surface of the base unit 21 so that it can be operated by the operator's knee, for example, from a position 60 cm lower than the upper surface of the base unit 21. It is desirable to place it within a range of 10cm higher than the upper surface.

FIG. 9 illustrates an example in which the horizontally movable lock members 95 are plural, but the number and shape of the horizontally movable lock members 95 are not limited to the example shown in FIG. 9 .

Additionally, as a mechanism for connecting the sliding portion 92 and the second guide portion 29 in a sliding and lockable manner, a known mechanism different from the mechanism shown in FIG. 9 may be employed. For example, Quick Clamper (registered trademark) manufactured by TALK SYSTEM CO., LTD. More specifically, a lever unit (model number: TUWL08 or TUWL16) manufactured by TALK SYSTEM CO., LTD. may be adopted. As an alternative to this, the mechanism described in each example or each reference example of Japanese Patent Application Laid-Open No. 2014-66365 may be employed.

It is clear that the present invention is not limited to the above-described embodiments, and that each embodiment can be appropriately modified or changed within the scope of the technical idea of the present invention. Moreover, it is possible to combine arbitrary components used in each embodiment with other embodiments, and it is also possible to omit arbitrary components in each embodiment.

For example, the configuration of the guide parts 28 and 29, the horizontal movement lock member 95, and the horizontal movement operation unit 90 described in the second embodiment may be adopted in the first embodiment.

Moreover, in the second embodiment, the arm portion 4 or the arm receiving portion 24 of the mounting portion 2 is guided by the guide portion 28, and the sliding portion 92 is guided by the second guide portion 29. ) An example guided by ) has been explained. Alternatively, the guide portion through which the arm receiving portion 24 of the arm portion 4 or the mounting portion 2 is guided and the guide portion through which the sliding portion 92 is guided may be provided with the same guide.

In addition, in the above-described embodiment, an example has been described where the first part 451 is an external member and the second part 452 is an inner shaft inserted into the first part 451. Alternatively, the second part 452 may be an external member, and the first part 451 may be an inner shaft inserted into the second part 452.

In addition, in the above-described embodiment, an example in which the first arm 41, the second arm 42, and the third arm 53 are each made of FRP (fiber reinforced plastic) has been described. Alternatively, the first arm 41, the second arm 42, and the third arm 53 may each be made of a lightweight metal such as aluminum alloy.

Furthermore, in the first or second embodiment, the work tool support device 1 is provided with a winch hook 11 for suspending the work tool support device 1 with a crane or the like (see FIGS. 1 and 5). ) may be installed. In the examples shown in FIGS. 1 and 5, the winch hook 11 is installed on the arm portion 4.

[Industrial applicability]

Using the work tool support device of the present invention, the strength of the connection between the first arm and the second arm is improved. Therefore, it is useful for manufacturers of work tool support devices and tradespeople who perform work by supporting work tools on the work tool support device.

1, 1A, 1B… Work tool support device, 2… Mounting part, 3… Breaking part, 4… Aambu, 6… Vibrating part, 7… Foot pedal, 8… Wire member, 11… Winch hook, 21… Base section, 22… Lee Dong-bu, 23… Moving part control part, 24... Arm receiving portion, 28... Guide Department, 29… 2nd guide department, 31… First grip member, 32… Guide Road, 33… Absence of second grip, 34... Coil spring, 36… Fastening member, 37… Control panel, 41… First arm, 42... Second arm, 45... No angle change, 49… Rotary damper, 53… Third arm, 55... Second angle change member, 59... Rotary damper, 65… Third angle change member, 81... First end, 82... Second end, 83... Third end, 84... Fourth end, 85... Tube, 90… Horizontal movement control unit, 92... Sliding part, 95... Horizontal movement lock member, 95a... First horizontally moving lock member, 95b... Second horizontally moving lock member, 97... Load carrying member, 99… Elastic pressing member, 99a... First elastic pressing member, 99b... Second elastic pressing member, 211... First leg, 212... Second leg part, 213... Connection, 281… Guide rail, 291… Second guide rail, 411... Protrusion, 421… Protrusion, 451… Part 1, 452… Part 2, 455, 455a, 455b... First sliding lock member, 456... First lock release member, 457... Load carrying member, 459… Elastic pressing member, 459a... First elastic pressing member, 459b... Second elastic pressing member, 551... Second angle changing member first portion, 552... Second angle changing member second portion, 555, 555a, 555b... Second sliding lock member, 556... Absence of second lock release, 557... Load carrying member, 559… Elastic pressing member, 559a... First elastic pressing member, 559b... Second elastic pressing member, 651... Third angle changing member first portion, 652... Third angle changing member second portion, 656... Third lock release member, T... work tools

Claims (12)

Aambuwa,
A grip portion disposed at a front end of the arm portion and removably supporting a work tool,
The arm part,
a first arm;
a second arm that is connected to the first arm so as to be free to swing and to be angle-fixable with respect to the first arm;
An angle changing member is disposed between the first arm and the second arm and changes the angle between the first arm and the second arm,
The angle change member is,
A first part that is freely connected to the first arm,
a second part that is freely connected to the second arm and is free to slide with respect to the first part;
a first sliding lock member that locks the second portion with respect to the first portion;
and a first lock release member that releases the lock state caused by the first sliding lock member,
A work tool support device in which the first arm, the second arm, and the angle change member constitute a triangular structure. In claim 1,
A work tool support device further comprising an elastic urging member that elastically urges the first sliding lock member in a locking direction. In claim 1,
A work tool support device further comprising a rotary damper disposed between the first arm and the second arm. In claim 2,
A work tool support device further comprising a rotary damper disposed between the first arm and the second arm. The method according to any one of claims 1 to 4,
a foot pedal that operates the first lock release member;
A work tool support device further comprising a wire member whose first end is connected to the first lock release member and whose second end is connected to the foot pedal. In claim 5,
The arm part,
a third arm that is free to swing and is connected to the second arm so as to be angle-fixable with respect to the second arm;
A second angle change member is disposed between the second arm and the third arm and changes the angle between the second arm and the third arm,
The second angle change member is,
a first portion of a second angle changing member that is swingably connected to the second arm;
a second part of the second angle change member that is freely connected to the third arm and is free to slide with respect to the first part of the second angle change member;
a second sliding lock member that locks the second portion of the second angle changing member with respect to the first portion of the second angle changing member;
and a second lock release member that releases the lock state caused by the second sliding lock member,
A third end of the wire member is connected to the second lock release member,
The foot pedal is capable of simultaneously unlocking the first sliding lock member and unlocking the second sliding lock member. The method according to any one of claims 1 to 4,
A mounting portion disposed on a proximal side of the arm portion and removable from the bucket of an aerial work vehicle,
a sliding part that is mounted directly or indirectly on the arm part and moves horizontally integrally with the arm part;
a horizontally movable locking member that locks the sliding portion with respect to the mounting portion;
Further comprising a horizontal movement operation unit mounted on the sliding unit,
When the horizontal movement operation unit is pressed toward the horizontal first direction, the lock state by the horizontal movement lock member is released, and the sliding portion and the arm portion move in the horizontal first direction,
When the horizontally movable operation unit is pressed in a horizontal second direction opposite to the horizontal first direction, the lock state by the horizontally movable lock member is released, and the sliding portion and the arm portion are moved in the horizontally second direction. A work tool support device that moves in one direction. In claim 5,
A mounting portion disposed on a proximal side of the arm portion and removable from the bucket of an aerial work vehicle,
a sliding part that is mounted directly or indirectly on the arm part and moves horizontally integrally with the arm part;
a horizontally movable locking member that locks the sliding portion with respect to the mounting portion;
Further comprising a horizontal movement operation unit mounted on the sliding unit,
When the horizontal movement operation unit is pressed in the horizontal first direction, the lock state by the horizontal movement lock member is released, and the sliding part and the arm part move in the horizontal first direction,
When the horizontally movable operation unit is pressed in a horizontal second direction opposite to the horizontal first direction, the lock state by the horizontally movable lock member is released, and the sliding portion and the arm portion are moved in the horizontally second direction. A work tool support device that moves in one direction. In claim 6,
A mounting portion disposed on a proximal side of the arm portion and removable from the bucket of an aerial work vehicle,
a sliding part that is mounted directly or indirectly on the arm part and moves horizontally integrally with the arm part;
a horizontally movable locking member that locks the sliding portion with respect to the mounting portion;
Further comprising a horizontal movement operation unit mounted on the sliding unit,
When the horizontal movement operation unit is pressed in the horizontal first direction, the lock state by the horizontal movement lock member is released, and the sliding part and the arm part move in the horizontal first direction,
When the horizontally movable operation unit is pressed in a horizontal second direction opposite to the horizontal first direction, the lock state by the horizontally movable lock member is released, and the sliding portion and the arm portion are moved in the horizontally second direction. A work tool support device that moves in one direction. In claim 7,
A work tool support device wherein the horizontal movement operating portion protrudes toward the inside of the bucket so as to be operable by a knee. In claim 8,
A work tool support device wherein the horizontal movement operating portion protrudes toward the inside of the bucket so as to be operable by a knee. In claim 9,
A work tool support device wherein the horizontal movement operating portion protrudes toward the inside of the bucket so as to be operable by a knee.