WO1996023935A1

WO1996023935A1 - Device for mounting work tool

Info

Publication number: WO1996023935A1
Application number: PCT/JP1996/000158
Authority: WO
Inventors: Takaharu Kozaki
Original assignee: Takaharu Kozaki
Priority date: 1995-01-30
Filing date: 1996-01-29
Publication date: 1996-08-08

Abstract

A work tool mounting device comprising a stationary disk (1) and a rotary disk (2), the stationary disk (1) being provided with a pair of brackets (3), the rotary disk (2) being provided with a pair of fixed brackets (4) for mounting thereto a mount member for a work tool. One of the brackets (4) is linked to a bracket (8) by means of a pin (9). The stationary disk (1) and the rotary disk (2) are secured to a turntable bearing which has an outer wheel (11) and an inner wheel (12). The outer wheel (11) is provided at its outer periphery with an external gear which engages with a pinion (23) which is mounted to a drive shaft (28) to rotate the rotary disk (2). An electic motor (31) and a gear box (30) are provided, and the pinion (23) is mounted to the drive shaft (28) through a torque transmission limiter (22). Accordingly, it is possible to rotate the work tool a required angle in a desired direction. The provision of the torque transmission limiter makes it possible to prevent damages to a drive device and a transmission device even when a heavier load than prescribed is applied by the work tool and to perform work safely.

Description

Itoda «Installation equipment for work equipment

The present invention relates to a device for attaching a working tool such as a bucket, a clamshell, a crusher, a small cutter, a cutter, a gripper, a dismantling machine, a breaker, a vibrator, etc. to an arm of a self-propelled bogie such as a hydraulic excavator. Things.

In addition, the present invention relates to a device for mounting a breaker at the tip of an arm of a self-propelled trolley or the like. Background art

Self-propelled trolleys such as hydraulic shovels are equipped with working equipment such as buckets, clamshells, crushers, splitters, cutting machines, grippers, breakers, vibrators, etc. on the arm. There is a need for a device that can be easily installed with equipment.

A conventional work implement mounting device has been proposed which has a fixed plate and a rotating plate on which work implements such as a bucket, a clamshell, and a crusher are mounted, and which is turned in an appropriate direction.

The conventional work implement mounting device is capable of turning a work implement attached to a turntable, but the work is manually performed and the turn is troublesome. In order to solve this problem, there has been proposed a device in which a driving device is provided to rotate the working equipment, but this has a problem that the driving device may be damaged when a load exceeding the specified load is applied to the working equipment. Was.

In order to solve such a problem that the drive device is damaged, it is considered that a torque transmission limiter is provided. However, there is a problem that the work cannot be performed safely without damaging the force.

Conventionally, self-propelled trolleys such as hydraulic shovels are equipped with working equipment according to the purpose at the end of the arm according to the work purpose. A breaker is attached to the tip of the arm of a self-propelled bogie such as a vehicle.

Fig. 19 shows the installation of a breaker for performing conventional crushing work. A breaker unit (8) having a crushing tool (8 1) is provided at the link (5 7) connected to the tip of the excavator boom arm (55) and the piston of the bucket cylinder of the excavator boom. 2) is attached by a link attachment part (5) and an arm attachment part (6).

To perform crushing work, first move a self-propelled bogie such as a hydraulic shovel to its working position, stop it, and move the breaker unit (82) having the crushing tool (81) in a direction suitable for the work. It was set, and the crushing tool (81) was operated by the hydraulic pressure of the breaker unit (82) to perform the crushing work.

In this prior art, a self-propelled bogie such as a hydraulic shovel is moved to its working position and stopped to perform crushing work. A breaker unit (8 2) having a crushing tool (8 1) In order to position the machine in the direction suitable for the work, the play car unit (82), the boom arm (55) of the hydraulic excavator that is mounted and the piston and link (56) (57) of the bucket cylinder are used. However, in these operations, it is difficult to adjust the position of the breaker and the object to be crushed, and there is a problem that the angle of the operation direction of the crushing tool cannot be adjusted. Disclosure of the invention

The present invention relates to a device for attaching a working tool to the tip of an arm of a self-propelled trolley, wherein the mounting device for the working tool has a fixed plate having a mounting bracket to the tip of the arm, a rotating plate having a bracket for mounting the working tool, Two rings, each of which comprises a turntable bearing for rotatably supporting the rotating disk on the fixed disk, and a driving device for rotating the rotating disk, and a rotary shaft of the driving device provided with a taper surface. A torque transmission limiting device is provided, and the torque transmission of the rotating shaft of the driving device is limited by the mechanical contact between the tapered surfaces of the two rings.

The present invention also relates to a device for attaching a working tool to the tip of an arm of a self-propelled trolley, wherein: A rotating plate having a bracket for mounting a work implement, and an evening table bearing for rotatably supporting the rotating plate on the fixed plate; and a drive shield for rotating the rotating plate is provided. The rotating shaft has an inner ring having a tapered surface on the outer diameter and an outer ring having a tapered surface on the inner diameter, and a torque transmission limiter provided by mechanical contact between the inner ring and the tapered surface of the outer ring. A mounting device for a working tool, characterized in that:

Further, according to the present invention, a turntable bearing includes an outer ring provided with an inner ring and an external gear, and a steel ball or a cylindrical roller sandwiched between the inner ring and the outer ring, wherein the inner ring is fixed to a fixed plate, and the outer ring is a rotary plate. And an external gear of the outer ring is engaged with a pinion provided in the drive device.

According to the present invention, in the above-mentioned attachment device for a working implement, the driving device includes an electric motor and a gear box for transmitting the driving force thereof.

Still further, according to the present invention, there is provided the work equipment mounting device as described above, wherein the work implement is a breaker provided with a crushing tool, and the breaker is mounted on a bracket for mounting the work implement provided on a rotary plate. The operating direction of the crushing tool provided on the rotary table is set substantially parallel to the turning surface of the turntable. In the present invention, the work implement can be turned in the required direction in the required direction by the required angle, and the drive unit and the transmission are kept free, and the work implement attached to the turntable is turned by turning. You can also turn 60 degrees free.

In addition, the inner ring has an inner ring provided with a tapered surface on the outer diameter and an inner ring provided with a tapered surface on the inner diameter, and a torque transmission limiter is provided by mechanical contact between the inner ring and the tapered surface of the outer ring. This allows the torque transmission limiter to operate properly even if the load on the turntable exceeds the specified load during the work of the work equipment, and prevents the work equipment from being damaged by mounting the work equipment. In particular, it prevents damage to the components of the drive device.

In addition, a breaker mounting device equipped with a crushing tool is shown.

The breaker mounting device is a device that attaches a breaker to the tip of the arm of a self-propelled bogie. A mounting device in which a turntable provided with a bracket for mounting is pivotably connected, and a breaker provided with a crushing tool, wherein the mounting of the breaker on the bracket of the turntable of the mounting device is performed by the breaker. The operating direction of the provided crushing tool and the turning surface of the turntable are mounted almost in parallel.

In the mounting and concealment of the breaker described above, a mounting device that pivotally connects a fixed plate provided with a bracket to be attached to the end of the arm and a turntable provided with a bracket for mounting the breaker is a power drive that turns the turntable. It has a part.

In the present invention, a breaker mounting device provided with a crushing tool is provided with a mounting device in which a fixed plate and a rotating plate are pivotably connected to the tip of a self-propelled bogie such as a hydraulic excavator, and the breaker is attached to the crushing tool. The operating direction and the turning surface of the turntable are mounted almost in parallel. The angle of the operating direction of the crushing tool can be adjusted, and the position of the breaker and the object to be crushed can be easily adjusted.

In other words, the angle of operation of the crushing tool can be adjusted by 360 degrees, and the operation direction of the crushing tool can be adjusted by the operation of the arm and bucket cylinder piston and link in the same way as before and after. In addition, it can be set in all directions, up, down, left and right. It is easy to adjust the position of the crushed object even if it is on the ceiling or on the wall, for example, in a tunnel.

In addition, by providing a power drive unit for turning the turntable, the operation can be performed on a console of a self-propelled bogie such as a hydraulic shovel, and the position can be easily adjusted. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a side view (cross-sectional view) showing an entire work implement mounting device according to a first embodiment of the present invention.

FIG. 2 is a plan view of FIG. 1 showing the entire work implement mounting device according to the first embodiment of the present invention.

FIG. 3 is a block diagram of the drive device and torque transmission limiter of FIG. 1 according to the first embodiment of the present invention. It is a figure which expands and shows a minute.

FIG. 4 is an enlarged view of the components of the torque transmission limiter of FIG. 3 of the first embodiment of the present invention.

FIG. 5 is a diagram for explaining the operation of the torque transmission limiter shown in FIG. 4 of the first embodiment of the present invention.

FIG. 6 is an enlarged view showing a drive device and a torque transmission limiter according to a second embodiment of the present invention.

FIG. 7 is an enlarged view of a drive device and a torque transmission limiter according to a third embodiment of the present invention.

FIG. 8 is an enlarged view of a drive device and a torque transmission limiter according to a fourth embodiment of the present invention.

FIG. 9 is an enlarged view of a drive device and a torque transmission limiter according to a fifth embodiment of the present invention.

FIG. 10 is an enlarged view of the components of the torque transmission limiter of FIG. 9 of the fifth embodiment of the present invention.

FIG. 11 is a diagram for explaining the operation of the torque transmission limiter shown in FIG. 10 of the fifth embodiment of the present invention.

FIG. 12 is a diagram showing a sixth embodiment of the present invention.

FIG. 13 is a plan view of FIG. 12 of the sixth embodiment of the present invention.

FIG. 14 is a diagram showing a breaker according to an embodiment of the present invention.

FIG. 15 is a diagram showing a breaker according to an embodiment of the present invention.

FIG. 16 is a diagram showing a seventh embodiment of the present invention.

FIG. 17 is a diagram showing an eighth embodiment of the present invention.

FIG. 18 is a diagram showing a ninth embodiment of the present invention.

FIG. 19 is a diagram showing a conventional technique. BEST MODE FOR CARRYING OUT THE INVENTION

In order to explain the present invention in more detail, embodiments will be described with reference to the accompanying drawings. Example 1

The first embodiment will be described with reference to FIGS. 1 to 5.

First, a work implement mounting device according to a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG.

As shown in Fig. 1 and Fig. 2, the work equipment mounting and concealment has a fixed plate (1) and a rotating plate (2), and the fixed plate (1) is provided with a pair of brackets (3), This bracket (3) has an arm mounting pin hole (6) and a link mounting pin hole (5). Further, it is preferable to provide a reinforcing plate (15) on the pair of brackets (3).

—By self-propelled trolley arm (55), link (56) (57) connected to arm mounting pin hole (6) and link mounting pin hole (5) of twin bracket (3) A work implement (not shown) such as a bucket mounted on the work implement mounting device is operated and operated.

The turntable (2) is provided with a pair of fixed brackets (4) protruding for mounting the attachments of the work equipment, and one bracket has a link mechanism on the bracket (4) with pins (9). (8) is provided.

The fixed plate (1) and the rotating plate (2) are each fixed to the turntable bearing. The turntable bearing has an outer ring (11) and an inner ring (12). A plurality of steel balls (14) are sandwiched between the outer ring (11) and the inner ring (12) so that they can turn smoothly. . Further, an external gear is provided on the outer periphery of the outer ring (11), and this turns the rotary disk (2) in accordance with a pinion (23) attached to the drive shaft (28).

The fixed plate (1) is fixed to the inner ring (12) of the turntable bearing with bolts (16). The rotation (2) is fixed to the outer ring (11) with bolts (16 '). Here, a force indicating a bolt as a fixing means is not particularly limited to this, but may be any as long as it can be fixed, for example, may be fixed by welding. A hydraulic passage is provided in the center of the fixed platen (1) and the rotating plate (2). The hydraulic passage consists of an outer cylinder shaft (18), a rotatable shaft (17), and a hydraulic pipe (20). ) And a connection portion (19) (21). Providing such a hydraulic passage (2) Even if the force <turning, the pipe (not shown) that supplies the hydraulic pressure to the working equipment is not twisted or cut, and the hydraulic pressure can be supplied to the working equipment. It is.

An electric motor (31) as a driving device and a gear box (30) as a transmission device are provided on a support plate (10) of the fixed board (1). The gearbox (30) has a drive shaft (25), a gear (36), and a worm wheel (38). A torque transmission limiter is mounted on the portion (28) of the drive shaft (25) protruding from the gearbox. (2

2) Pinion (23) is installed via.

The driving force of the electric motor (31) is applied to the outer ring (11) fixed to the turntable (2) via the gearbox (30), and drives the pinion (23) provided on the drive shaft (25). This is transmitted to the external gear of the outer ring (11) which is babbling, and rotates the turntable (2). In addition, the cover (13) is provided and the pinion (2

It is preferable to cover the external gear portion of 3) and the outer ring (11).

It is preferable to provide bolt mounting holes (26) and (27) at required positions around the fixed platen (1) and the rotating plate (2). This is to fix both the fixed plate (1) and the rotating plate (2) with bolts when the work does not require turning. Fig. 3 is a diagram showing the drive unit and the torque transmission limiter. Fig. 3 (a) is a plan view of the drive unit, (b) is a side view, and (c) and (d) are diagrams showing the torque transmission limiter. It is. As shown in Fig. 3 (a) and (b), the electric motor (31) as the driving device and the gear box (30) as the transmission device are mounted on the support plate (10) of the driving unit on the fixed platen (1). The gear box (30) has a drive shaft (25), a gear (36), a worm gear (37), and a worm wheel (38). The gear box (30) projects from the gear box of the drive shaft (25). The pinion (23) is attached to the part (28) via the torque transmission limiter (22).

The driving force from the electric motor (31) is reduced by the gear (36) of the gear box (30), the worm gear (37), and the worm wheel (38). 23) The driving force is transmitted to. The rotation of the pinion (23) is transmitted to the external gear of the outer ring (11) fixed to the turntable (2), and turns the turntable (2). The torque is transmitted to the pinion (23) via the drive shaft (25) (28) of the gearbox (30), and the torque transmission limiter (22) is connected between the shaft (25) and the pinion (23). Is provided.

The torque transmission limiter (22) of the device to which the work implement is attached is used as a work implement, for example, in a bucket, a clam seal, a crusher, a splitter, or a cutting machine, during various operations.

When a load greater than that specified in (2) is applied, the torque transmission limiter (22) operates properly to prevent damage to the equipment by mounting the work equipment, especially to prevent damage to the components of the drive unit. It is to prevent.

As shown in Fig. 3 (c) and (d), the torque transmission limiter (22) has an inner ring (43) with a tapered surface on the outer diameter and a tapered outer ring with a tapered surface on the inner diameter. It has a ring (41), a tapered ring (42) and a clamping bolt (40).

Further, the torque transmission limiter (22) will be described with reference to FIGS.

Fig. 4 is an enlarged view of the components of the torque transmission limiter shown in Fig. 3, where a spacer (45) is provided on an inner ring (43) having a tapered surface on the outer diameter, and a spacer is provided on the inner diameter. An outer ring (44) with a tapered surface is provided. Inner ring

Insert taper ring (41) and taper ring (42) between (43) and outer ring (44) and tighten with bolts.

FIG. 5 is a diagram for explaining the operation of the torque transmission limiter shown in FIG.

A taper ring (41) and a taper ring (42) are inserted between the inner ring (43) and the outer ring (44), and are tightened with bolts (40). The inner diameter of the taper ring (41) and the taper ring (42) correspond to the tapered surface of the outer diameter of the inner ring (43). The outer diameter of the taper ring (41) and the taper ring (42) correspond to the tapered surface of the inner diameter of the outer ring (44). By tightening the bolt (40), the force of the taper ring (41) and the taper ring (42) comes close to each other, and a force is generated that increases the distance between the inner ring (43) and the outer ring (44).

That is, a pressing force is generated on the drive shaft (28) as shown by the arrow (P) on the inner ring (43), and the pinion (2) is formed on the outer ring (44) as shown by the arrow (P '). 3) Pressing force on The pressing force (P) (P ') generates a frictional force for fastening the drive shaft (28) and the pinion (23). This frictional force can be adjusted by the tightening force of the bolt (40). (24) is a pinion

This is a recess for mounting the torque transmission limiter (22) of (23).

By adjusting the frictional force with the tightening force of the bolts (40), the relationship between the load applied to the torque transmission limiter (22) of the work equipment and the torque limit amount is determined, and the load exceeding the specified The torque transmission limiter

(22) operates properly to prevent damage to the components of the drive unit. Example 2

FIG. 6 shows a work implement mounting device according to a second embodiment of the present invention.

Fig. 6 (a) and (b) are enlarged views of the drive unit and the torque transmission limiter. The support plate (10) has an electric motor (31) and a gear box (30). The gearbox (30) has a drive shaft (25), a gear (36), a worm gear (37), and a worm wheel (38). The drive shaft (25) has a torque transmission limiter (22). ), The worm wheel (38) is attached. A pinion (23) is fixed to the drive shaft (28).

The driving force from the electric motor (31) is transmitted to the pinion (23) via the drive shaft. The rotation of the pinion (23) is transmitted to the external gear of the outer ring fixed to the turntable to turn the turntable.

The provision of the torque transmission limiter (22) allows the torque transmission limiter (22) to be used even when a load exceeding the specified amount is applied to the turntable (2) while the work implement is being mounted on the equipment. ) Operates properly and prevents damage to the equipment by attaching the work equipment, especially to the components of the drive unit.

The structure of the torque transmission limiter (22) can be that shown in FIG. 4 shown in the first embodiment. Example 3

FIG. 7 shows a work implement mounting device according to a third embodiment of the present invention. 9 / FIGS. 7 (a) to 7 (c) are enlarged views of a drive device and a torque transmission limiter of the third embodiment.

As shown in Fig. 7 (a), the electric motor (31) and the gearbox (30), which are the driving devices, are strongly mounted on the support plate (10) of the drive section, and the gearbox (30) is , A drive shaft (25), a gear (36), a worm gear (37) and a worm wheel (38), and a portion (28) of the drive shaft (25) protruding from the gear box is provided with a torque transmission restrictor (28). The pinion (23) is mounted via 22).

Fig. 7 (b) shows the torque transmission limiter, which has an inner ring (43) with a tapered surface on the outer diameter and an outer ring (44) with a tapered surface on the inner diameter. 40).

Fig. 7 (c) explains the operation of the torque transmission limiter. The outer ring (44) has a tapered surface on the inner diameter and the inner ring (43) has a tapered surface on the outer diameter, and tighten the bolt (40). As a result, the outer ring (44) slides on the tapered surface and the contact surface with the pinion (23), and the inner ring (43) is attached to the drive shaft (28) as shown by the arrow (P) by wedge action. Pressing force is generated, outer ring

At (44), a pressing force is generated against the pinion (23) as shown by the arrow (Ρ '). This pressing force (Ρ) (Ρ ') generates a frictional force for fastening the drive shaft (28) and the pinion (23). This frictional force can be adjusted by tightening the bolt (40). Example 4

FIG. 8 shows a work implement mounting device according to a fourth embodiment of the present invention.

FIGS. 8 (a) to 8 (c) are diagrams showing, in an enlarged manner, a portion of the drive concealment and torque transmission limiter of the fourth embodiment.

As shown in FIG. 8 (a), the support plate (10) is provided with an electric motor (31) as a driving device and a gear box (30), and the gear box (30) has a drive shaft (25), It has a gear (36), a worm gear (37), and a worm wheel (38), and a torque transmission limiter (22) is attached to a protruding cylindrical portion of the worm wheel (38). A pinion (23) is fixed to the drive shaft (28).

0 Fig. 8 (b) shows the torque transmission limiter, which uses an inner ring with a tapered outer surface and an outer ring with a tapered inner surface tightened with bolts.

Fig. 8 (c) explains the operation of the torque transmission limiter.

A taper ring (41) and a taper ring (42), which function as an outer ring, are tightened with bolts (40) to an inner ring (43) having a tapered outer surface.

In the fourth embodiment, the outer diameter of the inner ring (43) is tapered at the center thereof, and the inner diameter of the taper ring (41) and the taper surface of the taper ring (42) are increased. Corresponds to the tapered surface of the inner diameter.

Tighten the taper ring (41) and taper ring (42) with bolts (40), and press the projecting cylindrical part of the worm wheel (38) against the inner ring (43) as shown by the arrow (P) by wedge action. A frictional force is generated to fasten to the drive shaft (25). This frictional force can be adjusted by the tightening force of the bolt (40). Example 5

FIGS. 9 to 11 show a work implement mounting device according to a fifth embodiment of the present invention. FIG. 9 is an enlarged view of the drive device and the torque transmission limiter of the fifth embodiment, and FIG. 10 is an enlarged view of the components of the torque transmission limiter of FIG. Fig. 11 is a diagram for explaining the operation of the torque transmission limiter shown in Fig. 10. As shown in Fig. 9 (a), the drive plate is provided on the support plate (10) of the drive unit. Mo The gear (31) and a gear box (30) are provided. The gear box (30) has a drive shaft (25), a gear (36), a worm gear (37), and a worm wheel (38). The pinion (23) is attached to the part (28) of the shaft (25) protruding from the gear box via the torque transmission limiter (22).

Fig. 9 (b) and (c) show the torque transmission limiter (22). The inner ring (48) has a tapered surface on the outer diameter and the outer ring (48) has a tapered surface on the inner diameter. 47) and tighten with nuts (46).

FIG. 10 (a) is an enlarged view of the components of the torque transmission limiter of FIG. 9, and FIG. 10 (b) is a view in which the outer ring (47) and the nut (46) are combined. is there. The inner ring (48) with a tapered outer surface is threaded and provided with a vertical slit force. The outer ring (47) with a tapered inner surface also has a vertical slit. The nut (46) is screwed with the screw of the inner ring (48).

Referring to FIG. 11, the operation of the torque transmission limiter (22) shown in FIG. 10 will be described. The outer ring (47) moves by the nut (46), and the outer ring (48) acts as a wedge on the tapered surface of the outer diameter of the inner ring (48). As a result, the inner ring (48) generates a pressing force on the drive shaft (28) as shown by the arrow (P), and the outer ring (47) applies a pressing force on the pinion (23) as shown by the arrow (P '). Occurs. The pressing force (P) (P ') generates a frictional force for fastening the drive shaft (28) and the pinion (23). Further, by providing a wheel panel (49) on the outer ring (47), the operation can be performed smoothly.

The frictional force can be adjusted by the tightening force of the nut (46). By adjusting the frictional force by the tightening force of the nut (46), the relationship between the load applied to the torque transmission limiter (22) of the work equipment and the torque limit amount is determined, and When the load is applied, the torque transmission limiter (22) is working properly to prevent damage to the drive components. Example 6

A sixth embodiment of the present invention will be described with reference to FIGS. Fig. 12 is a side view of the breaker mounting device of the sixth embodiment, Fig. 13 is a plan view of the breaker mounting device of the sixth embodiment, and Figs.

It is a figure showing a breaker of a 6th example.

The breaker mounting device will be described with reference to FIGS.

The fixed platen (1) and the link (56) connected to the tip of the excavator boom arm (55) and the piston of the bucket cylinder of the excavator boom

Two A mounting device with the turntable (2) pivotally connected is installed.

The fixed platen (1) is provided with a pair of brackets (3) to be attached to the tip of the arm (55). The bracket (3) has a mounting part (6) attached to the tip of the arm (55). Attachment (5) force, which is attached to the link (56). The turntable (2), which is pivotally connected to the mounting device, is provided with a pair of brackets (4) for mounting a breaker.

The turntable (2) of the mounting device can be turned, and turns the turntable (2) when the crushing tool (78) for crushing work is positioned. The turning of the turntable (2) can be performed by hitting (pressing the crushing tool of the play car against something and turning), or by turning the turntable by lever.

The fixed plate (1) has a bolt mounting hole (27), and the rotating plate (2) has a bolt mounting hole (26), so that the rotating plate (2) does not turn during crushing work. Both the fixed plate (1) and the rotating plate (2) can be fixed with bolts. Bolt mounting holes (26) and (27) are provided at appropriate positions on the fixed platen (1) and the rotating plate (2), for example, eight in the plan view of Fig. 13 are shown. I have. The fixed plate (1) and the rotating plate (2) may be fixed by inserting a fixing tool between the fixed plate (1) and the rotating plate (2).

Next, details of the breaker will be described with reference to FIGS. 12 and 13, and further to FIGS. 14 and 15. FIG.

Fig. 15 (a) is a front view of the breaker, (b) is a side view of (a), and (c) is a side view from the tip of the crushing tool.

As shown in Fig. 15 (a), (b) and (c), the breaker consists of a crushing tool (78), a front head and cover (60), a cylinder part (79), and a back cover part (77). ), Which has an accumulator (63) and a hydraulic pipe connection (64).

The crushing tool (78) is used for the purpose of the framing work, for example, for penetrating the object to be crushed or for crushing with impact, depending on the corresponding tool, for example, chisel or chisel. It can be mounted interchangeably.

The front head and cover (60) hold and maintain the crushing tool (78).

Three Is to protect. The cylinder part (79) incorporates a hydraulic circuit and a stroke adjustment circuit for operating the piston, and operates the crushing tool (78) by biston. The back cover (77) is bolted to the rear of the cylinder (79) for protection. The accumulator section (63) and the hydraulic pipe connection port (64) are used to compensate the pressure in the hydraulic circuit of the cylinder part (79) and to supply and discharge the hydraulic pressure. The accumulator section (63) and the hydraulic pipe connection port (64) may be provided in the back cover section (77).

FIG. 14 (a) shows a state in which the breaker is held by a pair of holding plates, and FIG. 14 (b) is a front view thereof. As shown in FIGS. 14 (a) and 14 (b), the breaker is fixed to a pair of holding plates (75) by bolts (61) and (62). Use an appropriate number of bolts. The pair of holding plates (75) have a bracket (74), and are attached to the pair of brackets (4) of the rotating disk (2) of the mounting device by pins (66).

The breaker must be mounted on the bracket (4) of the turntable (2) of the mounting device. The working direction of the crushing tool (78) provided at the same time as the turning surface of the turntable (2) should be almost parallel. Is what is being done.

Next, FIG. 12 and FIG. 13 will be described.

The breaker is one that performs the crushing operation by hydraulic pressure, and is operated by hydraulic pressure from the operation unit of a hydraulic excavator.

The mounting device (fixed plate (1) and rotating plate) attached to the link (56) connected to the tip of the excavator arm (55) and the piston of the bucket cylinder

(2)) can be moved by the operation of the piston in the direction of arrow Z ^ or arrow Z ₂ in Figure 12. Also, although not shown, the arm (55) can be moved back and forth or swung by operating a base such as a hydraulic excavator.

Further, by fitting is constituted by the fixed platen (1) and rotating disk (2), the rotating disk (2) a 13 view of arrow丫E or turntable can be pivoted in the direction of arrow Y ₂ the first 13 to pivot in the arrow丫E or arrow Upsilon ₂ shown in the figure (2), remove the solid m (1) and rotating disc (2) fixed to and bolts, in a direction to perform the crushing work

Four The breaker crushing tool (78) can also be swiveled by hitting so that it is positioned. In the turning, the force of the arm (55) is applied, and the crushing tool (78) of the breaker is pressed against something to rotate the turntable (2). In addition, when moving the mounting device consisting of the rotating plate (2) with the breaker and the fixed plate (1) in the direction of arrow X, it can be moved by operating the arm (55) such as a hydraulic excavator. .

In this way, the breaker is mounted on the fixture that pivotally connects the fixed plate (1) and the turntable (2) so that the operating direction of the crushing tool (78) and the turning surface of the turntable (2) are almost parallel. to those which, prior arm and bucket preparative cylinder of the piston, as compared with those carried out by only link, the arrow or arrows Y ₂ angular adjustment of the working direction of the breaker (78) by rotating disc (2) It can turn and can easily adjust the position of the breaker and the object to be crushed. Example 7

A seventh embodiment of the present invention will be described with reference to FIG.

FIG. 16 shows a mechanism in which the turntable is pivotably connected to the breaker mounting device of the sixth embodiment shown in FIG.

As shown in FIG. 16, the fixed plate (1) and the rotating plate (2) are provided with a center pin therein. The center pin consists of an inner pin (17) and an outer pin (89), and the inner pin (17) can rotate within the outer pin (89). A collar (91) is provided below the center pin (17) and engages with the lower part of the turntable (2). The fixed platen (1) side is pressed with a double nut (92) and nut (93). The rotating plate (2), which is pivotally connected to the fixed plate (1) that is in close contact, slides and pivots at the joint surface. In addition, an engaging step (92) force is provided in an annular shape on the joint surface between the fixed platen (1) and the rotating plate (2). As a result, the vehicle can turn smoothly when turning.

In addition, the fixed plate (1) and the rotating plate (2) press and contact the center pin (17) with a double nut (92), but are further provided with an annular engaging step (92). As a result, even crushing work in which a large force is applied to the breaker can withstand such work.

Five The pin (17) inside the center pin is provided with a hydraulic passage (20) for the hydraulic intake and hydraulic outlet. The hydraulic passage (20) supplies hydraulic pressure from the hydraulic excavator console to the hydraulic connection port (64) of the breaker. The hose (shown in the figure) is rotated by the rotation of the breaker mounted on the turntable (2). The center pin (17) is provided with a rotatable hydraulic passage (20) to prevent it from being twisted or entangled.

The other structure is the same as that described in the sixth embodiment. A pair of fixed members (1) are attached to the link (56) connected to the tip of the arm (55 :) and the piston of the bucket cylinder. It is mounted by the mounting parts (5) and (6) of the bracket (3). The breaker bracket (74) is attached to the pair of brackets (4) of the turntable (2), which is pivotally connected to the fixed board (1), with pins (65) and (66). The operating direction of the crushing tool (78) and the turning surface of the turntable (2) are installed almost parallel.

In the seventh embodiment, a mechanism of a link (67) is provided on a pin (68) on one of a pair of brackets (4) of a turntable (2). It can correspond to the interval. Example 8

An eighth embodiment of the present invention will be described with reference to FIG.

FIG. 17 shows another embodiment of the mechanism pivotally connected to the turntable in the apparatus for mounting a play car according to the sixth embodiment shown in FIG. .

As shown in Fig. 17, the fixed board (1) and the turntable (2) can be pivotally connected by fixing an annular inner ring (88) to the fixed boat (1) and rotating the turntable (2). The outer ring (86) is fixed to the outer ring (88), and a plurality of steel balls (14) are arranged between the inner ring (88) and the outer ring (86). Then, the turntable (2) turns.

The fixed plate (1) and the rotating plate (2) are provided with a center pin at the center. The center pin consists of an inner pin (17) and an outer pin (89).

6 The pin (17) can rotate within the outer pin (89). The center is provided with a hydraulic connection port (19) and a hydraulic passage (20) for taking in and taking out hydraulic pressure at the top. The hydraulic passage (20) supplies the hydraulic pressure from the operation table of the excavator to the hydraulic connection port (64) of the play car, and the rotation of the turntable (2) causes the hose (not shown) to twist. There is a hydraulic passage (20) that can rotate so that it does not get entangled or entangled.

In the eighth embodiment, the fixed plate (1) and the rotating plate (2) are pivotally connected by an inner ring (8 8), an outer ring (86), and a steel ball (14). Even if the center pin is not pressed and contacted with a double nut, it can withstand enough. Other configurations are the same as those described in the seventh embodiment. Example 9

A ninth embodiment of the present invention will be described with reference to FIG.

FIG. 18 is a view showing a power-driven turning of a turntable that is turnably connected to a fixed board in the breaker mounting device of the sixth embodiment shown in FIG. 12. As shown in Fig. 18, in order to connect the fixed plate (1) and the rotating plate (2) to be able to turn, an annular inner ring (8 8) is fixed to the fixed plate (1), while the rotating plate (2) is fixed. ), An annular outer ring (8 6) is fixed, and a plurality of steel balls (14) are arranged between the inner ring (8 8) and the outer ring (66) to form a ball bearing. .

The outer ring (86) fixed to the turntable (2) of the ninth embodiment has teeth (35) on its outer side. The teeth of the pinion (23) attached to the drive shaft of the power drive (42) and the outer teeth of the outer ring (86) are mated with each other, driven by the drive (31), and fixed The turntable (2) is turned with respect to 1). It is desirable to use an electric motor or a hydraulic motor as the power for the drive unit. Other configurations are the same as those described in the seventh embodiment.

As a torque transmission limiter by mechanical contact with the drive unit, the drive unit has an inner ring provided with a tapered surface on the outer diameter and an outer ring provided with a tapered surface on the inner diameter on the rotating shaft of the drive device. For mechanical contact of the tapered surface of the outer ring

7 It is preferable to provide a torque transmission limiter force according to the present invention, and it is preferable to use the torque transmission limiter according to the embodiment of the present invention shown in FIGS. 3 to 11 described above. Industrial use tt

As described above, according to the present invention, since the fixed platen, the turntable and the turntable bearing are provided, the work implement can be turned by a necessary angle in a necessary direction. In addition, the drive device and the transmission device can be made free, and the work implement mounted on the turntable can be turned 360 degrees freely by turning. In addition, by providing the torque transmission limiter, it is possible to work safely without damaging the driving device and the transmission device even when a load exceeding the amount specified by the work implement is applied. In addition, the drive unit is inexpensive by using an electric motor, and is equipped with a gear box having a worm gear that transmits the driving force, so that the rotational speed of the electric motor is greatly reduced to increase the torque. It does not reverse even if a load is applied to the work equipment.

In addition, a fixture that pivotally connects the fixed plate and the rotating plate is mounted, and the rotating plate is mounted so that the operating direction of the crushing tool and the rotating surface of the rotating plate are almost parallel. The angle of the operating direction can be adjusted. The direction of operation of the crushing tool can be set in all directions, up and down, left and right, in addition to the conventional forward and backward movement, making it easy to crush the ceiling, which was not possible in the past. In addition, by providing a power drive for rotating the turntable, the operation can be performed on the operation table of a self-propelled bogie such as a hydraulic shovel, and the position can be easily adjusted, and the operation can be performed safely. You can do the work.

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Claims

The scope of the claims

1. A device for mounting a working tool to the tip of an arm of a self-propelled trolley, wherein the mounting device for the working tool has a fixed plate having a mounting bracket to the tip of the arm, a turntable having a bracket for mounting the working tool, and The fixed plate comprises a turntable bearing for rotatably supporting the turntable, and a drive device for turning the turntable is provided. The drive device has a rotating shaft provided with two rings having tapered surfaces. A mounting device for a working tool, wherein a torque transmission limiter is provided, and torque transmission of a rotary shaft of a driving device is limited by mechanical contact between tapered surfaces of two rings.

2. The mounting device for a working implement according to claim 1, wherein the driving device includes an electric motor and a gear box for transmitting the driving force.

3. The work equipment is a breaker provided with a crushing tool, and the mounting of the player on the bracket for mounting the work equipment provided on the turntable depends on the operation direction of the breaker tool provided on the breaker and the rotation of the turntable. 3. The mounting device for a working implement according to claim 1, wherein the turning surface is mounted substantially in parallel.

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